/* ============================================================
   NaoBan Sudoku - Download Page Styles v6.0
   Design: Minimal, elegant, eye-friendly
   - No gradients, no glow, no excessive animations
   - Unified 8px border-radius, soft shadows
   - Primary color: low-saturation blue #4a7dff
   - Page background: #f7f9fc
   ============================================================ */

/* Ensure nav is sticky (override if needed) */
.site-nav {
    position: sticky !important;
    top: 0 !important;
    z-index: 100 !important;
}

/* logo 文字版本：移动端显示，桌面端隐藏（与首页一致） */
.site-logo-text {
    display: none;
    text-decoration: none !important;
}
.site-logo-text .logo-text-dark {
    color: #2c3e50;
}
.site-logo-text .logo-text-accent {
    color: #f39c12;
}

/* Page background */
body.download-list-page {
    background: #f7f9fc;
    margin: 0;
    padding: 0;
    display: block;
    align-items: initial;
}

/* ============================================================
   Layout
   ============================================================ */
.download-main {
    max-width: 1140px;
    margin: 0 auto;
    padding: 24px 20px 48px;
}

.download-layout {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.download-content {
    flex: 1;
    min-width: 0;
    background: #fff;
    border-radius: 8px;
    padding: 36px 40px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    border: 1px solid #e0e6ed;
}

.download-sidebar {
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 84px;
}

@media (max-width: 960px) {
    .download-layout {
        flex-direction: column;
        gap: 24px;
    }
    .download-sidebar {
        width: 100%;
        position: static;
    }
    .download-content {
        padding: 24px 20px;
    }
}

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb {
    max-width: 1140px;
    margin: 0 auto;
    padding: 14px 20px;
    font-size: 13px;
    color: #9aa5b8;
}

.breadcrumb a {
    color: #6b7c8d;
    text-decoration: none;
    transition: color 0.15s;
}

.breadcrumb a:hover {
    color: #4a7dff;
}

.breadcrumb span {
    margin: 0 6px;
}

/* ============================================================
   Header / Title Area - Premium Style
   ============================================================ */
.download-header {
    margin-bottom: 32px;
}

.download-tags {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.download-tag {
    display: inline-block;
    padding: 5px 16px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0ff 100%);
    color: #4a7dff;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid #d4e0fa;
    transition: all 0.2s ease;
}

.download-tag:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(74,125,255,0.15);
}

.download-tag-free {
    background: linear-gradient(135deg, #4a7dff 0%, #5a8eff 100%);
    color: #fff;
    border: 1px solid #4a7dff;
    font-weight: 700;
    box-shadow: 0 3px 10px rgba(74,125,255,0.25);
}

.download-tag-free:hover {
    box-shadow: 0 4px 14px rgba(74,125,255,0.35);
}

.download-title {
    font-size: 30px;
    font-weight: 800;
    color: #1a2533;
    line-height: 1.35;
    margin: 0 0 16px 0;
    letter-spacing: -0.3px;
    background: linear-gradient(180deg, #1a2533 0%, #3a4a5e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-meta {
    display: flex;
    gap: 24px;
    color: #8595ab;
    font-size: 14px;
    flex-wrap: wrap;
    padding-top: 16px;
    border-top: 1px solid #eef1f6;
    font-weight: 500;
}

/* ============================================================
   Featured Image - Premium Style
   ============================================================ */
.download-featured-image {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 28px;
    background: #f0f4ff;
    border: 1px solid #eceff5;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-in;
    position: relative;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 4px 20px rgba(0,0,0,0.06),
        0 1px 3px rgba(0,0,0,0.03);
}

.download-featured-image:hover {
    box-shadow: 
        0 20px 48px rgba(74,125,255,0.18),
        0 8px 20px rgba(74,125,255,0.08);
    transform: translateY(-2px);
}

.download-featured-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.08) 100%);
    pointer-events: none;
    z-index: 1;
}

.download-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-featured-image:hover img {
    transform: scale(1.03);
}

.featured-image-hint {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 20px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff;
    font-size: 13px;
    text-align: center;
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 30px;
    z-index: 2;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.download-featured-image:hover .featured-image-hint {
    opacity: 1;
    bottom: 20px;
}

.download-featured-placeholder {
    text-align: center;
    padding: 40px;
    color: #9aa5b8;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0ff 100%);
}

.download-featured-placeholder .f-icon {
    font-size: 72px;
    margin-bottom: 16px;
    line-height: 1;
}

.download-featured-placeholder .f-text {
    font-size: 18px;
    color: #5a6b7d;
    font-weight: 500;
}

/* Featured image zoom overlay */
.featured-zoom-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    cursor: zoom-out;
    padding: 40px;
    box-sizing: border-box;
}

.featured-zoom-overlay.active {
    display: flex;
}

.featured-zoom-content {
    max-width: 90%;
    max-height: 85%;
    border-radius: 8px;
    overflow: hidden;
}

.featured-zoom-content img {
    max-width: 100%;
    max-height: 85vh;
    display: block;
    object-fit: contain;
}

.featured-zoom-content .download-featured-placeholder {
    width: 800px;
    max-width: 90vw;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
}

.featured-zoom-close {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

/* ============================================================
   Download Card - Premium Style
   ============================================================ */
.download-card {
    display: flex;
    gap: 28px;
    background: linear-gradient(145deg, #ffffff 0%, #fafbfe 100%);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 
        0 4px 24px rgba(0,0,0,0.05),
        0 1px 4px rgba(0,0,0,0.03);
    margin-bottom: 32px;
    border: 1.5px solid #e0e8f8;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4a7dff, #5a8eff, #78a8ff, #5a8eff, #4a7dff);
    background-size: 200% 100%;
    animation: shimmerBorder 3s linear infinite;
}

@keyframes shimmerBorder {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.download-card:hover {
    box-shadow: 
        0 12px 40px rgba(74,125,255,0.12),
        0 4px 12px rgba(74,125,255,0.06);
    transform: translateY(-2px);
    border-color: #c5d6f8;
}

.download-card-left {
    flex-shrink: 0;
}

.download-cover {
    width: 150px;
    height: 210px;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(135deg, #4a7dff 0%, #6b9dff 50%, #8bb8ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 8px 24px rgba(74,125,255,0.25),
        0 2px 8px rgba(74,125,255,0.15);
    position: relative;
    transition: transform 0.3s ease;
}

.download-card:hover .download-cover {
    transform: scale(1.03) rotate(-1deg);
}

.download-cover::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 100px;
    height: 100px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
}

.download-cover::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -20%;
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.download-cover-placeholder {
    text-align: center;
    padding: 16px;
    position: relative;
    z-index: 1;
}

.cover-icon {
    font-size: 44px;
    margin-bottom: 10px;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.cover-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.cover-sub {
    font-size: 12px;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
}

.download-card-right {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.download-card-title {
    font-size: 20px;
    font-weight: 800;
    color: #1a2533;
    margin: 0 0 8px 0;
    line-height: 1.4;
    letter-spacing: -0.2px;
}

.download-card-desc {
    color: #6b7c8d;
    font-size: 14px;
    margin: 0 0 18px 0;
    line-height: 1.7;
}

.download-info-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
    margin-bottom: 22px;
    padding: 18px 22px;
    background: linear-gradient(145deg, #f7f9fc 0%, #f0f4ff 100%);
    border-radius: 12px;
    border: 1px solid #e8eef8;
}

.download-info-item {
    display: flex;
    gap: 10px;
    font-size: 14px;
    align-items: center;
}

.info-label {
    color: #8595ab;
    min-width: 36px;
    font-weight: 500;
}

.info-value {
    color: #1a2533;
    font-weight: 700;
}

/* ============================================================
   Download Button - Premium Style
   ============================================================ */
.download-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px;
    padding: 14px 36px !important;
    background: linear-gradient(135deg, #4a7dff 0%, #5a8eff 50%, #6b9dff 100%) !important;
    color: #ffffff !important;
    text-decoration: none !important;
    border-radius: 12px !important;
    font-size: 16px !important;
    font-weight: 700 !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    align-self: flex-start;
    box-shadow: 
        0 6px 20px rgba(74, 125, 255, 0.3) !important;
    border: none !important;
    cursor: pointer !important;
    position: relative;
    line-height: 1.4 !important;
    letter-spacing: 0.3px;
    min-height: 44px;
    -webkit-tap-highlight-color: transparent;
    overflow: hidden;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.download-btn:hover {
    background: linear-gradient(135deg, #3a6bef 0%, #4a7dff 50%, #5a8eff 100%) !important;
    color: #ffffff !important;
    box-shadow: 
        0 10px 28px rgba(74, 125, 255, 0.4) !important;
    transform: translateY(-2px);
}

.download-btn:hover::before {
    left: 100%;
}

.download-btn:active {
    background: linear-gradient(135deg, #2d5fdf 0%, #3a6bef 100%) !important;
    transform: translateY(0);
    box-shadow: 
        0 4px 12px rgba(74, 125, 255, 0.3) !important;
}

.download-btn-icon {
    font-size: 18px;
    font-weight: bold;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.download-btn-icon svg {
    width: 18px;
    height: 18px;
    display: block;
}

.download-btn-text {
    display: inline-block;
}

.download-btn-large {
    padding: 16px 44px !important;
    font-size: 17px !important;
    min-height: 52px;
}

.download-trust {
    display: flex;
    gap: 20px;
    margin-top: 16px;
    flex-wrap: wrap;
    padding: 14px 20px;
    background: linear-gradient(135deg, #f7f9fc 0%, #f0f4ff 100%);
    border-radius: 12px;
    border-left: 4px solid #4a7dff;
    border: 1px solid #e8eef8;
    border-left: 4px solid #4a7dff;
}

.trust-item {
    font-size: 13px;
    color: #5a6b7d;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.download-note {
    margin-top: 14px;
    font-size: 13px;
    color: #8595ab;
    line-height: 1.6;
    padding-left: 4px;
}

/* Disabled state */
.download-btn-disabled {
    background: #c0c8d4 !important;
    border-color: #c0c8d4 !important;
    cursor: not-allowed !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06) !important;
    pointer-events: none;
}

.download-btn-disabled:hover {
    background: #c0c8d4 !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06) !important;
}

@media (max-width: 600px) {
    .download-card {
        flex-direction: column;
        padding: 20px;
        gap: 16px;
    }
    .download-cover {
        width: 100%;
        height: 140px;
    }
    .download-info-list {
        grid-template-columns: 1fr 1fr;
    }
    .download-btn {
        align-self: stretch;
        padding: 12px 24px !important;
    }
}

/* ============================================================
   Table of Contents - Premium Style
   ============================================================ */
.download-toc {
    background: linear-gradient(135deg, #f7f9fc 0%, #f0f4ff 100%);
    border-radius: 14px;
    padding: 24px 28px;
    margin-bottom: 36px;
    border: 1px solid #e8eef8;
    position: relative;
    overflow: hidden;
}

.download-toc::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #4a7dff, #6b9dff, #8bb8ff);
}

.toc-title {
    font-weight: 700;
    color: #1a2533;
    margin-bottom: 16px;
    font-size: 17px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    columns: 2;
    column-gap: 24px;
}

.toc-list li {
    margin-bottom: 10px;
    break-inside: avoid;
}

.toc-list a {
    color: #5a6b7d;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    position: relative;
    padding-left: 14px;
}

.toc-list a::before {
    content: '';
    position: absolute;
    left: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #c5d4f8;
    transition: all 0.2s ease;
}

.toc-list a:hover {
    color: #4a7dff;
    transform: translateX(2px);
}

.toc-list a:hover::before {
    background: #4a7dff;
    transform: scale(1.3);
}

@media (max-width: 600px) {
    .toc-list {
        columns: 1;
    }
}

/* ============================================================
   Body Content - Premium Style
   ============================================================ */
.download-body {
    color: #2c3e50;
    line-height: 1.9;
}

.download-section {
    margin-bottom: 40px;
}

.download-section h2 {
    font-size: 23px;
    font-weight: 800;
    color: #1a2533;
    margin: 0 0 22px 0;
    padding-bottom: 12px;
    border-bottom: 3px solid #4a7dff;
    display: inline-block;
    position: relative;
    letter-spacing: -0.2px;
}

.download-section h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 40%;
    height: 3px;
    background: linear-gradient(90deg, #6b9dff, transparent);
}

.download-section p {
    margin: 0 0 20px 0;
    font-size: 17px;
    color: #3d4f63;
    line-height: 1.95;
}

/* Images within article content */
.download-body img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    display: block;
    margin: 28px auto;
    box-shadow: 
        0 8px 28px rgba(0,0,0,0.08),
        0 2px 8px rgba(0,0,0,0.04);
    border: 1px solid #eef1f6;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-body img:hover {
    box-shadow: 
        0 16px 44px rgba(74,125,255,0.15),
        0 6px 16px rgba(74,125,255,0.08);
    transform: translateY(-3px);
}

/* Image caption / figure */
.download-body figure {
    margin: 28px 0;
    text-align: center;
}

.download-body figcaption {
    margin-top: 12px;
    font-size: 14px;
    color: #8595ab;
    font-weight: 500;
    font-style: italic;
}

/* Blockquote / callout */
.download-body blockquote {
    margin: 24px 0;
    padding: 20px 24px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0ff 100%);
    border-left: 4px solid #4a7dff;
    border-radius: 0 12px 12px 0;
    color: #3a4a5e;
    font-size: 16px;
    line-height: 1.8;
}

.download-body blockquote p {
    margin: 0;
    font-size: 16px;
    color: #3a4a5e;
}

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

.feature-list li {
    padding: 14px 0 14px 36px;
    position: relative;
    color: #3d4f63;
    font-size: 17px;
    line-height: 1.8;
    transition: all 0.2s ease;
}

.feature-list li:hover {
    transform: translateX(4px);
    color: #2c3e50;
}

.feature-list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    top: 14px;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #4a7dff 0%, #6b9dff 100%);
    color: #fff;
    font-weight: 700;
    font-size: 13px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(74,125,255,0.25);
}

/* Benefit cards - Premium Style */
.benefit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 20px;
}

.benefit-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8faff 100%);
    border: 1px solid #e8eef8;
    border-radius: 12px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: 
        0 2px 10px rgba(0, 0, 0, 0.03),
        0 1px 3px rgba(0, 0, 0, 0.02);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4a7dff, #6b9dff, #8bb8ff);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.benefit-card:hover {
    border-color: #c5d6f8;
    box-shadow: 
        0 12px 28px rgba(74, 125, 255, 0.12),
        0 4px 10px rgba(74, 125, 255, 0.06);
    transform: translateY(-4px);
}

.benefit-card:hover::before {
    opacity: 1;
}

.benefit-icon {
    font-size: 40px;
    margin-bottom: 12px;
    line-height: 1;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.06));
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1);
}

.benefit-text {
    font-size: 15px;
    color: #3d4f63;
    font-weight: 600;
}

@media (max-width: 600px) {
    .benefit-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================================
   FAQ - Premium Style
   ============================================================ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: linear-gradient(145deg, #ffffff 0%, #fafbfe 100%);
    border: 1px solid #eceff5;
    border-radius: 12px;
    padding: 22px 26px;
    box-shadow: 
        0 2px 10px rgba(0, 0, 0, 0.03),
        0 1px 3px rgba(0, 0, 0, 0.02);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 
        0 6px 20px rgba(74,125,255,0.08),
        0 2px 6px rgba(74,125,255,0.04);
    border-color: #d4e0fa;
    transform: translateX(4px);
}

.faq-question {
    font-weight: 700;
    color: #1a2533;
    margin-bottom: 12px;
    font-size: 17px;
    position: relative;
    padding-left: 30px;
    line-height: 1.5;
}

.faq-question::before {
    content: "Q";
    position: absolute;
    left: 0;
    top: 0;
    width: 22px;
    height: 22px;
    background: linear-gradient(135deg, #4a7dff 0%, #6b9dff 100%);
    color: #fff;
    font-weight: 800;
    font-size: 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(74,125,255,0.25);
}

.faq-answer {
    color: #4a5a6a;
    font-size: 16px;
    line-height: 1.8;
    padding-left: 30px;
    position: relative;
}

.faq-answer::before {
    content: "A";
    position: absolute;
    left: 0;
    top: 0;
    width: 22px;
    height: 22px;
    background: linear-gradient(135deg, #95a5b8 0%, #b0bac8 100%);
    color: #fff;
    font-weight: 800;
    font-size: 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.faq-answer p {
    margin: 0 0 10px 0;
    font-size: 16px;
    color: #4a5a6a;
    line-height: 1.8;
}

.faq-answer ol, .faq-answer ul {
    margin: 8px 0;
    padding-left: 24px;
}

.faq-answer li {
    margin-bottom: 6px;
    font-size: 16px;
}

.faq-answer .step-title {
    font-weight: 600;
    color: #4a7dff;
    margin: 12px 0 6px 0;
    font-size: 16px;
}

.faq-answer .step-note {
    background: #f7f9fc;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    color: #6b7c8d;
    margin: 8px 0;
    border-left: 2px solid #4a7dff;
}

/* ============================================================
   Bottom CTA - Premium Style
   ============================================================ */
.download-bottom-cta {
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
        linear-gradient(135deg, #3d6af0 0%, #4a7dff 30%, #5a8eff 60%, #78a8ff 100%);
    border-radius: 16px;
    padding: 52px 36px;
    text-align: center;
    color: #fff;
    margin: 48px 0;
    box-shadow: 
        0 16px 48px rgba(74,125,255,0.25),
        0 6px 16px rgba(74,125,255,0.15);
    position: relative;
    overflow: hidden;
}

.download-bottom-cta::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.download-bottom-cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.download-bottom-cta h3 {
    font-size: 26px;
    margin: 0 0 10px 0;
    color: #fff;
    font-weight: 800;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

.download-bottom-cta p {
    margin: 0 0 28px 0;
    color: rgba(255,255,255,0.92);
    font-size: 16px;
    position: relative;
    z-index: 1;
    line-height: 1.7;
}

.download-bottom-cta .download-btn {
    background: #fff !important;
    color: #4a7dff !important;
    border: none !important;
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.12),
        0 2px 6px rgba(0, 0, 0, 0.06) !important;
    position: relative;
    z-index: 1;
    font-weight: 800 !important;
}

.download-bottom-cta .download-btn:hover {
    background: #f5f8ff !important;
    color: #3a6bef !important;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 
        0 12px 32px rgba(0, 0, 0, 0.15),
        0 4px 10px rgba(0, 0, 0, 0.08) !important;
}

/* ============================================================
   Prev / Next Navigation
   ============================================================ */
.download-nav {
    display: flex;
    gap: 16px;
    margin: 32px 0;
}

.download-nav-prev,
.download-nav-next {
    flex: 1;
    padding: 16px 20px;
    background: #fff;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    text-decoration: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.download-nav-prev:hover,
.download-nav-next:hover {
    border-color: #4a7dff;
    box-shadow: 0 2px 6px rgba(74, 125, 255, 0.08);
}

.nav-label {
    display: block;
    font-size: 13px;
    color: #9aa5b8;
    margin-bottom: 4px;
}

.nav-title {
    font-size: 14px;
    color: #2c3e50;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: block;
}

.download-nav-next {
    text-align: right;
}

@media (max-width: 600px) {
    .download-nav {
        flex-direction: column;
    }
    .download-nav-next {
        text-align: left;
    }
}

/* ============================================================
   Tags bottom
   ============================================================ */
.download-tags-bottom {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 20px 0;
    border-top: 1px solid #e0e6ed;
    margin-bottom: 24px;
}

.tags-label {
    color: #9aa5b8;
    font-size: 14px;
}

.tag-link {
    display: inline-block;
    padding: 4px 12px;
    background: #f7f9fc;
    color: #6b7c8d;
    text-decoration: none;
    border-radius: 8px;
    font-size: 13px;
    transition: all 0.15s;
    border: 1px solid #e0e6ed;
}

.tag-link:hover {
    background: #e8eefc;
    color: #4a7dff;
    border-color: #4a7dff;
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar-widget {
    background: #fff;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.widget-title {
    font-size: 16px;
    font-weight: 700;
    color: #2c3e50;
    margin: 0 0 16px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid #e0e6ed;
}

.widget-download-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.widget-download-item {
    display: flex;
    gap: 12px;
    text-decoration: none;
    transition: opacity 0.15s;
}

.widget-download-item:hover {
    opacity: 0.8;
}

.widget-download-thumb {
    width: 50px;
    height: 60px;
    background: #f0f4ff;
    border-radius: 8px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    border: 1px solid #d4dbe5;
}

.widget-download-info {
    flex: 1;
    min-width: 0;
}

.widget-download-title {
    font-size: 14px;
    color: #2c3e50;
    line-height: 1.4;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.widget-download-meta {
    font-size: 12px;
    color: #9aa5b8;
}

.widget-feedback {
    text-align: center;
}

.widget-feedback p {
    font-size: 14px;
    color: #6b7c8d;
    margin: 0 0 16px 0;
}

.feedback-btn {
    display: inline-block;
    padding: 10px 24px;
    border: 1px solid #4a7dff;
    color: #4a7dff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.15s;
    font-weight: 500;
}

.feedback-btn:hover {
    background: #4a7dff;
    color: #fff;
}

/* ============================================================
   Download Center List Page
   ============================================================ */
.download-hero {
    background: #4a7dff;
    color: #fff;
    padding: 60px 20px;
    text-align: center;
}

.download-hero-inner {
    max-width: 800px;
    margin: 0 auto;
}

.download-hero-title {
    font-size: 36px;
    margin: 0 0 12px 0;
    font-weight: 700;
}

.download-hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin: 0 0 32px 0;
}

.download-hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

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

.hero-stat-num {
    display: block;
    font-size: 32px;
    font-weight: 700;
}

.hero-stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.download-center-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
}

.download-filters {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.filter-label {
    color: #6b7c8d;
    font-size: 14px;
}

.filter-tag {
    display: inline-block;
    padding: 6px 16px;
    background: #fff;
    border: 1px solid #d4dbe5;
    border-radius: 8px;
    color: #6b7c8d;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.15s;
}

.filter-tag:hover {
    border-color: #4a7dff;
    color: #4a7dff;
}

.filter-tag-active {
    background: #4a7dff;
    border-color: #4a7dff;
    color: #fff;
}

.filter-tag span {
    opacity: 0.7;
    font-size: 12px;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.download-card-item {
    background: #fff;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.download-card-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: #4a7dff;
    transform: translateY(-2px);
}

.download-card-item-cover {
    height: 140px;
    background: #f0f4ff;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.cover-pdf-icon {
    font-size: 48px;
}

.cover-diff-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.95);
    color: #4a7dff;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
}

.download-card-item-body {
    padding: 16px;
}

.download-card-item-title {
    font-size: 15px;
    font-weight: 600;
    color: #2c3e50;
    margin: 0 0 8px 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 42px;
}

.download-card-item-desc {
    font-size: 13px;
    color: #9aa5b8;
    margin: 0 0 12px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 36px;
}

.download-card-item-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: #9aa5b8;
    margin-bottom: 12px;
}

.download-card-item-btn {
    padding: 8px 0;
    background: #f0f4ff;
    color: #4a7dff;
    text-align: center;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.15s;
}

.download-card-item:hover .download-card-item-btn {
    background: #4a7dff;
    color: #fff;
}

@media (max-width: 1024px) {
    .download-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    /* 手机端导航栏 */
    .site-nav-inner {
        padding: 0 14px;
        height: 56px;
    }

    /* 移动端：logo 图片替换为文字，节省横向空间，支持 i18n */
    .site-logo img {
        display: none !important;
        width: 0 !important;
        height: 0 !important;
        visibility: hidden !important;
    }
    .site-logo {
        font-size: 20px;
        font-weight: 700;
        color: var(--text);
        line-height: 1.2;
        display: inline-block;
        text-decoration: none !important;
    }
    .site-logo-text {
        display: inline !important;
        text-decoration: none !important;
    }
    .site-logo-text .logo-text-dark {
        color: #2c3e50 !important;
    }
    .site-logo-text .logo-text-accent {
        color: #f39c12 !important;
    }

    .site-nav-links {
        display: none !important;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 12px 16px;
        gap: 4px;
        border-bottom: 1px solid var(--btn-border);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        z-index: 99;
    }

    .site-nav-links.open {
        display: flex !important;
    }

    .site-nav-link {
        padding: 12px 14px;
        font-size: 15px;
        border-radius: 8px;
    }

    .site-nav-link-featured {
        padding: 12px 14px;
        background: rgba(74, 125, 255, 0.06);
        border-left: 3px solid var(--primary);
        border-radius: 8px;
        font-weight: 600;
    }

    .site-nav-dropdown {
        display: block;
        width: 100%;
    }

    .site-nav-dropdown-menu {
        position: static;
        transform: none;
        box-shadow: none;
        margin-top: 0;
        padding-left: 20px;
        background: transparent;
        min-width: auto;
        display: none;
    }

    .site-nav-dropdown-menu.open {
        display: block;
    }

    .site-nav-dropdown-item {
        padding: 10px 0;
        font-size: 14px;
    }

    .site-nav-actions {
        gap: 4px;
    }

    .lang-switch-btn,
    .elder-mode-btn {
        display: flex !important;
        width: 36px;
        height: 36px;
    }

    .top-auth-btns {
        display: flex !important;
    }

    .top-btn-register {
        display: none !important;
    }

    .top-user {
        display: none !important;
    }

    .site-nav-toggle {
        display: block !important;
        width: 40px;
        height: 40px;
        font-size: 22px;
    }

    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .download-hero-title {
        font-size: 28px;
    }
    .download-hero-stats {
        gap: 30px;
    }
    .hero-stat-num {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .download-grid {
        grid-template-columns: 1fr;
    }
}

/* Pagination */
.pagination-wrap {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.pagination {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.page-link {
    display: inline-block;
    padding: 8px 14px;
    background: #fff;
    border: 1px solid #d4dbe5;
    color: #6b7c8d;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.15s;
}

.page-link:hover {
    border-color: #4a7dff;
    color: #4a7dff;
}

.page-active {
    background: #4a7dff;
    border-color: #4a7dff;
    color: #fff;
}

.page-dots {
    padding: 0 4px;
    color: #9aa5b8;
}

.page-info {
    margin-left: 16px;
    color: #9aa5b8;
    font-size: 13px;
}

/* ============================================================
   Elder Mode
   ============================================================ */
[data-mode="elder"] .download-title {
    font-size: calc(28px * 1.25);
}

[data-mode="elder"] .download-card-title {
    font-size: calc(19px * 1.25);
}

[data-mode="elder"] .download-btn {
    font-size: calc(15px * 1.25) !important;
    padding: 14px 36px !important;
    min-height: 48px;
}

[data-mode="elder"] .download-btn-large {
    font-size: calc(17px * 1.25) !important;
    padding: 16px 44px !important;
    min-height: 56px;
}

[data-mode="elder"] .download-section h2 {
    font-size: calc(22px * 1.25);
}

[data-mode="elder"] .download-section p {
    font-size: calc(17px * 1.25);
}

[data-mode="elder"] .feature-list li {
    font-size: calc(17px * 1.25);
}

[data-mode="elder"] .faq-question {
    font-size: calc(17px * 1.25);
}

[data-mode="elder"] .faq-answer {
    font-size: calc(16px * 1.25);
}

[data-mode="elder"] .download-bottom-cta h3 {
    font-size: calc(24px * 1.25);
}

/* ============================================================
   Download Center List Page - Deep Optimization
   ============================================================ */

/* Hero section enhanced */
.download-hero {
    background: #4a7dff;
    color: #fff;
    padding: 64px 20px 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download-hero::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 24px;
    background: #f7f9fc;
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
    max-width: 800px;
    margin: 0 auto;
}

.download-hero-inner {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.download-hero-title {
    font-size: 36px;
    margin: 0 0 12px 0;
    font-weight: 700;
    letter-spacing: 1px;
}

.download-hero-subtitle {
    font-size: 17px;
    opacity: 0.85;
    margin: 0 0 36px 0;
    letter-spacing: 0.5px;
}

.download-hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
}

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

.hero-stat-num {
    display: block;
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 14px;
    opacity: 0.75;
    margin-top: 4px;
    display: block;
}

/* Filters enhanced */
.download-filters {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
    flex-wrap: wrap;
    padding: 14px 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e0e6ed;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.filter-label {
    color: #6b7c8d;
    font-size: 14px;
    font-weight: 500;
    margin-right: 4px;
}

.filter-tag {
    display: inline-block;
    padding: 6px 18px;
    background: #f7f9fc;
    border: 1px solid #d4dbe5;
    border-radius: 20px;
    color: #6b7c8d;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.15s;
    cursor: pointer;
}

.filter-tag:hover {
    border-color: #4a7dff;
    color: #4a7dff;
    background: #f0f4ff;
}

.filter-tag-active {
    background: #4a7dff;
    border-color: #4a7dff;
    color: #fff;
}

.filter-tag span {
    opacity: 0.7;
    font-size: 12px;
    margin-left: 2px;
}

/* Grid enhanced */
.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 36px;
}

.download-card-item {
    background: #fff;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    display: flex;
    flex-direction: column;
}

.download-card-item:hover {
    box-shadow: 0 6px 20px rgba(74,125,255,0.1);
    border-color: #4a7dff;
    transform: translateY(-3px);
}

.download-card-item-cover {
    height: 160px;
    background: #f0f4ff;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.cover-pdf-icon {
    font-size: 52px;
    line-height: 1;
}

.cover-diff-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 12px;
    background: rgba(255,255,255,0.95);
    color: #4a7dff;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
}

.download-card-item-body {
    padding: 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.download-card-item-title {
    font-size: 15px;
    font-weight: 600;
    color: #2c3e50;
    margin: 0 0 8px 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 45px;
}

.download-card-item-desc {
    font-size: 13px;
    color: #9aa5b8;
    margin: 0 0 12px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 38px;
    line-height: 1.6;
}

.download-card-item-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: #9aa5b8;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.download-card-item-btn {
    padding: 10px 0;
    background: #f0f4ff;
    color: #4a7dff;
    text-align: center;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.15s;
    margin-top: auto;
}

.download-card-item:hover .download-card-item-btn {
    background: #4a7dff;
    color: #fff;
}

/* Section heading for list page */
.download-section-heading {
    text-align: center;
    margin-bottom: 28px;
}

.download-section-heading h2 {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
    margin: 0 0 8px 0;
}

.download-section-heading p {
    font-size: 15px;
    color: #9aa5b8;
    margin: 0;
}

/* Features banner on list page */
.download-features-banner {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 36px;
    flex-wrap: wrap;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e0e6ed;
}

.feature-banner-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #6b7c8d;
}

.feature-banner-icon {
    font-size: 20px;
    line-height: 1;
}

/* ============================================================
   Responsive - Mobile Adaptation
   ============================================================ */

@media (max-width: 1024px) {
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .download-hero {
        padding: 48px 16px 44px;
    }
    
    .download-hero-title {
        font-size: 26px;
    }
    
    .download-hero-subtitle {
        font-size: 15px;
        margin-bottom: 28px;
    }
    
    .download-hero-stats {
        gap: 24px;
    }
    
    .hero-stat-num {
        font-size: 28px;
    }
    
    .hero-stat-label {
        font-size: 12px;
    }
    
    .download-center-main {
        padding: 20px 16px;
    }
    
    .download-filters {
        padding: 12px 14px;
        gap: 8px;
    }
    
    .filter-tag {
        padding: 5px 14px;
        font-size: 13px;
    }
    
    .download-features-banner {
        gap: 20px;
        padding: 16px;
    }
    
    .feature-banner-item {
        font-size: 13px;
    }
}

@media (max-width: 600px) {
    /* Article page mobile */
    .download-main {
        padding: 16px 12px 32px;
    }
    
    .download-content {
        padding: 20px 16px;
    }
    
    .download-title {
        font-size: 22px;
    }
    
    .download-section h2 {
        font-size: 19px;
    }
    
    .download-section p {
        font-size: 16px;
    }
    
    .feature-list li {
        font-size: 16px;
    }
    
    .download-card {
        padding: 20px;
        gap: 16px;
    }
    
    .download-info-list {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    
    .benefit-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-item {
        padding: 16px 14px;
    }
    
    .faq-question {
        font-size: 16px;
    }
    
    .faq-answer {
        font-size: 15px;
    }
    
    .download-bottom-cta {
        padding: 32px 16px;
    }
    
    .download-bottom-cta h3 {
        font-size: 20px;
    }
    
    .download-nav {
        flex-direction: column;
    }
    
    /* List page mobile */
    .download-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .download-card-item-cover {
        height: 130px;
    }
    
    .download-card-item-body {
        padding: 14px;
    }
    
    .download-card-item-title {
        font-size: 14px;
        min-height: 40px;
    }
    
    .download-card-item-desc {
        font-size: 12px;
        min-height: 32px;
    }
    
    .download-features-banner {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
}

@media (max-width: 380px) {
    .download-hero-title {
        font-size: 22px;
    }
    
    .download-hero-stats {
        gap: 16px;
    }
    
    .hero-stat-num {
        font-size: 24px;
    }
}


/* ============================================================
   Download Center List Page - v2 (New Design)
   ============================================================ */

/* Hero with premium gradient background */
.dl-hero {
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(255,255,255,0.1) 0%, transparent 50%),
        linear-gradient(135deg, #3d6af0 0%, #4a7dff 30%, #5a8eff 60%, #78a8ff 100%);
    color: #fff;
    padding: 80px 20px 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 装饰性光晕 */
.dl-hero::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.04) 40%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: floatGlow 8s ease-in-out infinite;
}

.dl-hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 50%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: floatGlow 10s ease-in-out infinite reverse;
}

/* 细微网格纹理叠加 */
.dl-hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    opacity: 0.5;
}

@keyframes floatGlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -20px) scale(1.05); }
}

.dl-hero-inner {
    max-width: 960px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.dl-hero-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.95);
    margin: 0 0 18px 0;
    letter-spacing: 2px;
    padding: 6px 20px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 30px;
    border: 1px solid rgba(255,255,255,0.25);
}

.dl-hero-title {
    font-size: 46px;
    margin: 0 0 16px 0;
    font-weight: 800;
    letter-spacing: 1px;
    line-height: 1.2;
    text-shadow: 0 2px 20px rgba(0,0,0,0.1);
    background: linear-gradient(180deg, #ffffff 0%, #e8f0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dl-hero-subtitle {
    font-size: 17px;
    color: rgba(255,255,255,0.92);
    margin: 0 0 44px 0;
    line-height: 1.8;
    font-weight: 400;
    text-shadow: 0 1px 8px rgba(0,0,0,0.08);
}

/* Search box - premium glassmorphism */
.dl-search-box {
    max-width: 690px;
    margin: 0 auto;
}

.dl-search-input-wrap {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 50px;
    padding: 8px 8px 8px 24px;
    box-shadow: 
        0 10px 40px rgba(0,0,0,0.12),
        0 2px 8px rgba(0,0,0,0.06),
        inset 0 1px 0 rgba(255,255,255,0.8);
    border: 1px solid rgba(255,255,255,0.6);
    transition: all 0.3s ease;
}

.dl-search-input-wrap:focus-within {
    box-shadow: 
        0 12px 48px rgba(74,125,255,0.25),
        0 4px 12px rgba(74,125,255,0.1),
        inset 0 1px 0 rgba(255,255,255,0.9);
    transform: translateY(-1px);
}

.dl-search-icon {
    color: #8fa4c4;
    flex-shrink: 0;
    margin-right: 4px;
}

.dl-search-input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 12px;
    font-size: 16px;
    color: #2c3e50;
    background: transparent;
    font-family: inherit;
    font-weight: 500;
}

.dl-search-input::placeholder {
    color: #a5b5cc;
    font-weight: 400;
}

.dl-search-btn {
    background: linear-gradient(135deg, #4a7dff 0%, #5a8eff 100%);
    color: #fff;
    border: none;
    padding: 13px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(74,125,255,0.3);
}

.dl-search-btn:hover {
    background: linear-gradient(135deg, #3a6bef 0%, #4a7dff 100%);
    box-shadow: 0 6px 18px rgba(74,125,255,0.4);
    transform: translateY(-1px);
}

.dl-search-btn:active {
    transform: translateY(0);
}

.dl-search-tags {
    margin-top: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.dl-search-tag-label {
    font-size: 13px;
    color: rgba(255,255,255,0.8);
    font-weight: 400;
}

.dl-search-tag {
    color: rgba(255,255,255,0.92);
    text-decoration: none;
    font-size: 13px;
    padding: 5px 14px;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 20px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.dl-search-tag:hover {
    background: rgba(255,255,255,0.22);
    border-color: rgba(255,255,255,0.45);
    transform: translateY(-1px);
}

/* Main content */
.dl-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
    margin-top: -50px;
    position: relative;
    z-index: 2;
}

.dl-section {
    margin-bottom: 56px;
}

.dl-section-header {
    text-align: center;
    margin-bottom: 32px;
}

.dl-section-title {
    font-size: 28px;
    font-weight: 800;
    color: #1a2533;
    margin: 0 0 10px 0;
    letter-spacing: -0.3px;
}

.dl-section-desc {
    font-size: 15px;
    color: #8595ab;
    margin: 0;
    font-weight: 400;
}

/* Category cards - premium glassmorphism */
.dl-categories {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 12px;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 
        0 8px 32px rgba(0,0,0,0.06),
        0 2px 8px rgba(0,0,0,0.03);
    border: 1px solid rgba(255,255,255,0.7);
}

.dl-cat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 18px 8px;
    background: linear-gradient(145deg, #f8fafc 0%, #f1f5fa 100%);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1.5px solid transparent;
    position: relative;
    overflow: hidden;
}

.dl-cat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--cat-color, #4a7dff) 0%, var(--cat-color-light, #6b9dff) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.dl-cat-card > * {
    position: relative;
    z-index: 1;
}

.dl-cat-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 12px 28px rgba(74,125,255,0.18),
        0 4px 10px rgba(74,125,255,0.08);
    border-color: rgba(74,125,255,0.3);
}

.dl-cat-card:hover::before {
    opacity: 0.06;
}

.dl-cat-all { 
    --cat-color: #4a7dff;
    --cat-color-light: #6b9dff;
    border-color: #c5d4f8; 
    background: linear-gradient(145deg, #f0f5ff 0%, #e6efff 100%);
}
.dl-cat-all:hover { 
    border-color: #4a7dff; 
}
.dl-cat-all .dl-cat-icon { color: #4a7dff; }

.dl-cat-elder { 
    --cat-color: #6b8e23;
    --cat-color-light: #8fbc5a;
}
.dl-cat-elder:hover { 
    border-color: #6b8e23; 
    box-shadow: 
        0 12px 28px rgba(107,142,35,0.18),
        0 4px 10px rgba(107,142,35,0.08);
}
.dl-cat-elder .dl-cat-icon { color: #6b8e23; }

.dl-cat-beginner { 
    --cat-color: #4a7dff;
    --cat-color-light: #6b9dff;
}
.dl-cat-beginner:hover { 
    border-color: #4a7dff; 
}
.dl-cat-beginner .dl-cat-icon { color: #4a7dff; }

.dl-cat-kids { 
    --cat-color: #ff9f43;
    --cat-color-light: #ffbe76;
}
.dl-cat-kids:hover { 
    border-color: #ff9f43; 
    box-shadow: 
        0 12px 28px rgba(255,159,67,0.18),
        0 4px 10px rgba(255,159,67,0.08);
}
.dl-cat-kids .dl-cat-icon { color: #ff9f43; }

.dl-cat-easy { 
    --cat-color: #26c281;
    --cat-color-light: #55d6a0;
}
.dl-cat-easy:hover { 
    border-color: #26c281; 
    box-shadow: 
        0 12px 28px rgba(38,194,129,0.18),
        0 4px 10px rgba(38,194,129,0.08);
}
.dl-cat-easy .dl-cat-icon { color: #26c281; }

.dl-cat-medium { 
    --cat-color: #4a7dff;
    --cat-color-light: #6b9dff;
}
.dl-cat-medium:hover { 
    border-color: #4a7dff; 
}
.dl-cat-medium .dl-cat-icon { color: #4a7dff; }

.dl-cat-hard { 
    --cat-color: #e74c3c;
    --cat-color-light: #f1948a;
}
.dl-cat-hard:hover { 
    border-color: #e74c3c; 
    box-shadow: 
        0 12px 28px rgba(231,76,60,0.18),
        0 4px 10px rgba(231,76,60,0.08);
}
.dl-cat-hard .dl-cat-icon { color: #e74c3c; }

.dl-cat-expert { 
    --cat-color: #8e44ad;
    --cat-color-light: #bb8fce;
}
.dl-cat-expert:hover { 
    border-color: #8e44ad; 
    box-shadow: 
        0 12px 28px rgba(142,68,173,0.18),
        0 4px 10px rgba(142,68,173,0.08);
}
.dl-cat-expert .dl-cat-icon { color: #8e44ad; }

.dl-cat-master { 
    --cat-color: #2c3e50;
    --cat-color-light: #5d6d7e;
}
.dl-cat-master:hover { 
    border-color: #2c3e50; 
    box-shadow: 
        0 12px 28px rgba(44,62,80,0.18),
        0 4px 10px rgba(44,62,80,0.08);
}
.dl-cat-master .dl-cat-icon { color: #2c3e50; }

.dl-cat-icon {
    font-size: 30px;
    line-height: 1;
    transition: transform 0.3s ease;
}

.dl-cat-card:hover .dl-cat-icon {
    transform: scale(1.1);
}

.dl-cat-name {
    font-size: 15px;
    font-weight: 700;
    color: #2c3e50;
}

.dl-cat-count {
    font-size: 12px;
    color: #9aa5b8;
    font-weight: 500;
}

/* Download grid with premium cards */
.dl-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.dl-card {
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 2px 12px rgba(0,0,0,0.04),
        0 1px 3px rgba(0,0,0,0.02);
    border: 1px solid #eceff5;
    display: flex;
    flex-direction: column;
    position: relative;
}

.dl-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4a7dff, #6b9dff, #8bb8ff);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}

.dl-card:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 40px rgba(74,125,255,0.15),
        0 8px 20px rgba(74,125,255,0.08),
        0 2px 6px rgba(0,0,0,0.04);
    border-color: #d0dcfa;
}

.dl-card:hover::after {
    opacity: 1;
}

.dl-card-cover {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.dl-card-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.1) 100%);
    z-index: 1;
    pointer-events: none;
}

.dl-cover-kids {
    background: linear-gradient(135deg, #ff9f43 0%, #ffbe76 50%, #ffd9a8 100%);
}
.dl-cover-elder {
    background: linear-gradient(135deg, #6b8e23 0%, #8fbc5a 50%, #b5d88a 100%);
}
.dl-cover-beginner {
    background: linear-gradient(135deg, #4a7dff 0%, #6b9dff 50%, #8bb8ff 100%);
}
.dl-cover-easy {
    background: linear-gradient(135deg, #26c281 0%, #55d6a0 50%, #88e6be 100%);
}
.dl-cover-medium {
    background: linear-gradient(135deg, #4a7dff 0%, #6b9dff 50%, #8bb8ff 100%);
}
.dl-cover-hard {
    background: linear-gradient(135deg, #e74c3c 0%, #f1948a 50%, #f7b7b0 100%);
}
.dl-cover-expert {
    background: linear-gradient(135deg, #8e44ad 0%, #bb8fce 50%, #d7bde2 100%);
}
.dl-cover-master {
    background: linear-gradient(135deg, #2c3e50 0%, #5d6d7e 50%, #85929e 100%);
}

.dl-cover-content {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.dl-card:hover .dl-cover-content {
    transform: scale(1.05);
}

.dl-cover-puzzle {
    opacity: 0.92;
}

.mini-grid {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 0;
    width: 140px;
    height: 140px;
    border: 2px solid rgba(255,255,255,0.85);
    background: rgba(255,255,255,0.92);
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.mini-grid span {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: #2c3e50;
    border-right: 1px solid rgba(0,0,0,0.08);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.mini-grid span.empty {
    background: transparent;
}

.mini-grid span:nth-child(3n):not(:nth-child(9n)) {
    border-right: 2px solid rgba(0,0,0,0.2);
}

.mini-grid span:nth-child(n+19):nth-child(-n+27),
.mini-grid span:nth-child(n+46):nth-child(-n+54) {
    border-bottom: 2px solid rgba(0,0,0,0.2);
}

.dl-cover-diff {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 5px 14px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #2c3e50;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.dl-cover-count {
    position: absolute;
    bottom: 14px;
    right: 14px;
    padding: 5px 14px;
    background: rgba(0,0,0,0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.dl-card-body {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.dl-card-title {
    font-size: 17px;
    font-weight: 700;
    color: #1a2533;
    margin: 0 0 10px 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 51px;
    transition: color 0.2s ease;
}

.dl-card:hover .dl-card-title {
    color: #4a7dff;
}

.dl-card-desc {
    font-size: 14px;
    color: #7a8ba0;
    margin: 0 0 18px 0;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 46px;
}

.dl-card-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.dl-meta-item {
    padding: 4px 12px;
    background: #f0f4ff;
    color: #4a7dff;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.dl-meta-free {
    background: linear-gradient(135deg, #e8f8ef 0%, #d4f2e0 100%);
    color: #26c281;
}

.dl-card-btn {
    padding: 12px 0;
    background: linear-gradient(135deg, #f5f8ff 0%, #eef3ff 100%);
    color: #4a7dff;
    text-align: center;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    transition: all 0.25s ease;
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.dl-card-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s ease;
}

.dl-card:hover .dl-card-btn {
    background: linear-gradient(135deg, #4a7dff 0%, #5a8eff 100%);
    color: #fff;
    box-shadow: 0 4px 12px rgba(74,125,255,0.3);
}

.dl-card:hover .dl-card-btn::before {
    left: 100%;
}

/* Features section - premium card style */
.dl-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.dl-feature-item {
    background: linear-gradient(145deg, #ffffff 0%, #fafbfe 100%);
    padding: 32px 24px;
    border-radius: 14px;
    text-align: center;
    border: 1px solid #eceff5;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.dl-feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4a7dff, #6b9dff, #8bb8ff);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.dl-feature-item:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 16px 36px rgba(74,125,255,0.12),
        0 4px 12px rgba(74,125,255,0.06);
    border-color: #d0dcfa;
}

.dl-feature-item:hover::before {
    opacity: 1;
}

.dl-feature-icon {
    font-size: 42px;
    margin-bottom: 16px;
    line-height: 1;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.08));
}

.dl-feature-item:hover .dl-feature-icon {
    transform: scale(1.08);
}

.dl-feature-title {
    font-size: 17px;
    font-weight: 700;
    color: #1a2533;
    margin: 0 0 10px 0;
}

.dl-feature-desc {
    font-size: 14px;
    color: #7a8ba0;
    margin: 0;
    line-height: 1.65;
}

/* Pagination - premium style */
.pagination-wrap {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.pagination {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    padding: 8px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    border: 1px solid #eceff5;
}

.page-link {
    display: inline-block;
    padding: 9px 16px;
    background: #f7f9fc;
    border: 1.5px solid transparent;
    color: #6b7c8d;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    min-width: 40px;
    text-align: center;
}

.page-link:hover {
    border-color: #4a7dff;
    color: #4a7dff;
    background: #f0f4ff;
    transform: translateY(-1px);
}

.page-active {
    background: linear-gradient(135deg, #4a7dff 0%, #5a8eff 100%);
    border-color: #4a7dff;
    color: #fff;
    box-shadow: 0 4px 12px rgba(74,125,255,0.3);
}

.page-active:hover {
    background: linear-gradient(135deg, #3a6bef 0%, #4a7dff 100%);
    color: #fff;
    border-color: #3a6bef;
}

.page-dots {
    padding: 0 6px;
    color: #9aa5b8;
    font-weight: 600;
}

.page-info {
    margin-left: 20px;
    color: #8595ab;
    font-size: 13px;
    font-weight: 500;
}

/* ============================================================
   Article Page - Enhancements (gradient bg + block style)
   ============================================================ */

.download-article-page {
    background: linear-gradient(180deg, #eef3ff 0%, #f7f9fc 400px);
}

.download-article-page .download-main {
    padding-top: 28px;
}

.download-article-page .download-content {
    background: transparent;
    box-shadow: none;
    border: none;
    padding: 0;
}

.download-article-page .download-section {
    background: linear-gradient(145deg, #ffffff 0%, #fdfdff 100%);
    border-radius: 16px;
    padding: 36px 40px;
    margin-bottom: 28px;
    box-shadow: 
        0 4px 20px rgba(0,0,0,0.04),
        0 1px 4px rgba(0,0,0,0.02);
    border: 1px solid #eceff5;
    transition: box-shadow 0.3s ease;
}

.download-article-page .download-section:hover {
    box-shadow: 
        0 8px 28px rgba(0,0,0,0.05),
        0 2px 8px rgba(0,0,0,0.03);
}

.download-article-page .download-section h2 {
    font-size: 23px;
    font-weight: 800;
    color: #1a2533;
    margin: 0 0 22px 0;
    padding-bottom: 14px;
    border-bottom: 3px solid #4a7dff;
    display: inline-block;
    position: relative;
    letter-spacing: -0.2px;
}

.download-article-page .download-section h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 40%;
    height: 3px;
    background: linear-gradient(90deg, #6b9dff, transparent);
}

.download-article-page .download-section p {
    margin: 0 0 20px 0;
    font-size: 17px;
    color: #3d4f63;
    line-height: 1.95;
}

/* ============================================================
   Responsive - Mobile Adaptation (List Page)
   ============================================================ */

@media (max-width: 1024px) {
    .dl-categories {
        grid-template-columns: repeat(5, 1fr);
    }
    .dl-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dl-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .dl-hero {
        padding: 48px 16px 60px;
    }
    .dl-hero-title {
        font-size: 30px;
    }
    .dl-hero-subtitle {
        font-size: 15px;
        margin-bottom: 28px;
    }
    .dl-search-input-wrap {
        padding: 4px 4px 4px 16px;
    }
    .dl-search-input {
        padding: 12px 10px;
        font-size: 15px;
    }
    .dl-search-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    .dl-main {
        padding: 0 16px 40px;
        margin-top: -30px;
    }
    .dl-section-title {
        font-size: 22px;
    }
    .dl-categories {
        grid-template-columns: repeat(3, 1fr);
        padding: 14px;
        gap: 8px;
    }
    .dl-cat-card {
        padding: 12px 6px;
        gap: 4px;
    }
    .dl-cat-icon {
        font-size: 22px;
    }
    .dl-cat-name {
        font-size: 13px;
    }
    .dl-cat-count {
        font-size: 11px;
    }
    .dl-section {
        margin-bottom: 36px;
    }
    .dl-features {
        gap: 14px;
    }
    .dl-feature-item {
        padding: 20px 14px;
    }
    .dl-feature-icon {
        font-size: 32px;
    }
    .dl-feature-title {
        font-size: 15px;
    }
    .dl-feature-desc {
        font-size: 13px;
    }
    
    /* Article page mobile blocks */
    .download-article-page .download-section {
        padding: 20px 18px;
        margin-bottom: 16px;
        border-radius: 10px;
    }
    .download-article-page .download-section h2 {
        font-size: 19px;
    }
    .download-article-page .download-section p {
        font-size: 16px;
    }
}

@media (max-width: 600px) {
    .dl-hero-title {
        font-size: 26px;
    }
    .dl-hero-tag {
        font-size: 13px;
    }
    .dl-hero-subtitle {
        font-size: 14px;
    }
    .dl-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .dl-card-cover {
        height: 170px;
    }
    .mini-grid {
        width: 120px;
        height: 120px;
    }
    .mini-grid span {
        font-size: 9px;
    }
    .dl-card-title {
        font-size: 16px;
        min-height: 48px;
    }
    .dl-card-desc {
        font-size: 13px;
        min-height: 42px;
    }
}

@media (max-width: 420px) {
    .dl-categories {
        grid-template-columns: repeat(2, 1fr);
    }
    .dl-features {
        grid-template-columns: 1fr;
    }
    .dl-hero-title {
        font-size: 22px;
    }
    .dl-search-tags {
        gap: 6px;
    }
    .dl-search-tag-label {
        width: 100%;
        margin-bottom: 4px;
    }
}