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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    padding: 60px 0 40px;
}

.logo {
    font-size: 48px;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

h1 {
    font-size: 42px;
    font-weight: 700;
    background: linear-gradient(90deg, #00d2ff, #3a7bd5, #9b59b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.subtitle {
    font-size: 18px;
    color: #8892b0;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.header-nav {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.header-nav .nav-link {
    display: inline-block;
    padding: 10px 24px;
    background: linear-gradient(135deg, #00d2ff, #3a7bd5);
    color: #fff;
    text-decoration: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.header-nav .nav-link:nth-child(2) {
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
}

.header-nav .nav-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 210, 255, 0.3);
}

.header-nav .nav-link:nth-child(2):hover {
    box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
}

.quote-section {
    max-width: 700px;
    margin: 30px auto;
    padding: 24px 30px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    text-align: center;
}

.quote-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.quote-header .quote-title {
    margin-bottom: 0;
}

.quote-title {
    font-size: 16px;
    color: #00d2ff;
    margin-bottom: 12px;
    font-weight: 600;
}

.quote-content {
    font-size: 20px;
    color: #fff;
    line-height: 1.8;
    margin-bottom: 10px;
    font-style: italic;
}

.quote-author {
    font-size: 14px;
    color: #8892b0;
}

.quote-category {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 12px;
    background: rgba(155, 89, 182, 0.2);
    color: #c084fc;
    border-radius: 12px;
    font-size: 12px;
}

.quote-refresh {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    color: #8892b0;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.quote-refresh:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.quote-tabs {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.quote-tab {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    color: #8892b0;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.quote-tab:hover {
    background: rgba(0, 210, 255, 0.1);
    border-color: rgba(0, 210, 255, 0.3);
}

.quote-tab.active {
    background: rgba(0, 210, 255, 0.2);
    border-color: rgba(0, 210, 255, 0.4);
    color: #00d2ff;
}

.promo-section {
    margin-top: 20px;
    padding: 16px;
    background: rgba(0, 210, 255, 0.08);
    border: 1px solid rgba(0, 210, 255, 0.2);
    border-radius: 12px;
    text-align: center;
}

.promo-title {
    font-size: 14px;
    color: #00d2ff;
    margin-bottom: 8px;
    font-weight: 600;
}

.promo-content {
    font-size: 13px;
    color: #8892b0;
    margin-bottom: 12px;
    line-height: 1.5;
}

.promo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #00d2ff, #0099cc);
    color: #fff;
    text-decoration: none;
    border-radius: 20px;
    font-size: 13px;
    transition: all 0.3s;
}

.promo-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}

.promo-image {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    object-fit: cover;
}

.promo-section.has-image {
    cursor: pointer;
    transition: all 0.3s;
}

.promo-section.has-image:hover {
    background: rgba(0, 210, 255, 0.12);
    border-color: rgba(0, 210, 255, 0.3);
}

.promo-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 20px;
}

.promo-modal.active {
    display: flex;
}

.promo-modal-img {
    max-width: 90%;
    max-height: 70vh;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.promo-modal-title {
    font-size: 24px;
    color: #fff;
    margin-top: 20px;
    font-weight: 600;
    text-align: center;
}

.promo-modal-content {
    font-size: 18px;
    color: #aaa;
    margin-top: 12px;
    text-align: center;
    max-width: 600px;
    line-height: 1.6;
}

.promo-modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #888;
    cursor: pointer;
    transition: color 0.2s;
}

.promo-modal-close:hover {
    color: #fff;
}

.promo-modal-download {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #00d2ff, #0099cc);
    color: #fff;
    text-decoration: none;
    border-radius: 25px;
    font-size: 14px;
    transition: all 0.3s;
}

.promo-modal-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 210, 255, 0.4);
}

.search-section {
    max-width: 700px;
    margin: 30px auto;
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 16px 24px;
    font-size: 16px;
    border: none;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.search-box {
    display: flex;
    gap: 12px;
}

.search-box input {
    flex: 1;
    padding: 20px 28px;
    font-size: 18px;
    border: none;
    border-radius: 60px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 40px rgba(0, 210, 255, 0.25);
}

.search-box input::placeholder {
    color: #8892b0;
}

.search-btn {
    padding: 20px 36px;
    border: none;
    border-radius: 60px;
    background: linear-gradient(135deg, #00d2ff, #3a7bd5);
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.search-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 210, 255, 0.4);
}

.search-section {
    max-width: 900px;
    margin: 40px auto;
}

.hot-keywords {
    margin-top: 24px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.kw-group {
    margin-bottom: 20px;
}

.kw-group:last-child {
    margin-bottom: 0;
}

.kw-tag-label {
    display: inline-block;
    font-size: 14px;
    color: #8892b0;
    margin-bottom: 12px;
    font-weight: 600;
}

.kw-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.kw-item {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    cursor: pointer;
}

.kw-item:hover {
    background: rgba(0, 210, 255, 0.15);
    border-color: rgba(0, 210, 255, 0.3);
    color: #00d2ff;
}

.kw-tabs {
    display: flex;
    gap: 8px;
    margin-top: 20px;
    padding: 4px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    width: fit-content;
}

.kw-tab {
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: #8892b0;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.kw-tab:hover {
    color: #fff;
}

.kw-tab.active {
    background: linear-gradient(135deg, #00d2ff, #3a7bd5);
    color: #fff;
}

.engine-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.engine-bar .kw-label {
    color: #8892b0;
    font-size: 14px;
    font-weight: 500;
}

.engine-bar .engine-item {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    cursor: pointer;
}

.engine-bar .engine-item:hover, .engine-bar .engine-item.active {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 15px rgba(155, 89, 182, 0.3);
}

.engine-bar .engine-search {
    display: flex;
    flex: 1;
    min-width: 300px;
    gap: 10px;
}

.engine-bar #engineSearchInput {
    flex: 1;
    padding: 14px 24px;
    font-size: 15px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    transition: all 0.3s;
}

.engine-bar #engineSearchInput:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(155, 89, 182, 0.5);
    box-shadow: 0 0 20px rgba(155, 89, 182, 0.2);
}

.engine-bar #engineSearchInput::placeholder {
    color: #666;
}

.engine-bar .engine-search-btn {
    padding: 14px 28px;
    border: none;
    border-radius: 30px;
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.engine-bar .engine-search-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(155, 89, 182, 0.4);
}

.engine-item {
    padding: 10px 22px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    color: #ccc;
    text-decoration: none;
    font-size: 15px;
    transition: all 0.3s;
    cursor: pointer;
}

.engine-item:hover, .engine-item.active {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 15px rgba(155, 89, 182, 0.3);
}

.engine-search-btn {
    box-shadow: 0 5px 20px rgba(155, 89, 182, 0.4);
}
    transition: all 0.3s;
}

#engineSearchInput:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(155, 89, 182, 0.4);
}

#engineSearchInput::placeholder {
    color: #666;
}

.lazy-content {
    transition: opacity 0.5s ease;
}

.featured-section {
    padding: 30px 0 20px;
    margin-bottom: 30px;
}

.featured-title {
    font-size: 22px;
    color: #fff;
    margin-bottom: 20px;
    text-align: center;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.featured-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.featured-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 210, 255, 0.3);
    box-shadow: 0 8px 30px rgba(0, 210, 255, 0.15);
}

.featured-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.featured-name {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
}

.featured-desc {
    font-size: 12px;
    color: #8892b0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.featured-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 210, 255, 0.1);
    color: #00d2ff;
    border-radius: 20px;
    font-size: 11px;
    margin-top: 10px;
}

.hot-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto 40px;
}

.hot-platform {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 20px;
}

.platform-title {
    font-size: 18px;
    color: #fff;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.hot-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s;
}

.hot-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.hot-index {
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 210, 255, 0.1);
    color: #00d2ff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
}

.hot-index.hot {
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
    color: #fff;
}

.hot-index.top3 {
    background: linear-gradient(135deg, #ffd700, #ff9500);
    color: #fff;
}

.hot-content {
    flex: 1;
    min-width: 0;
}

.hot-title {
    font-size: 15px;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hot-meta {
    font-size: 12px;
    color: #8892b0;
}

.tool-detail {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    margin-bottom: 30px;
}

.tool-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    flex-shrink: 0;
}

.tool-info {
    flex: 1;
}

.tool-name {
    font-size: 28px;
    color: #fff;
    margin-bottom: 12px;
    font-weight: 600;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.tool-tag {
    padding: 4px 12px;
    background: rgba(0, 210, 255, 0.1);
    color: #00d2ff;
    border-radius: 20px;
    font-size: 13px;
}

.tool-category {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.05);
    color: #8892b0;
    border-radius: 20px;
    font-size: 13px;
}

.tool-visit-btn {
    padding: 14px 32px;
    background: linear-gradient(135deg, #00d2ff, #0099cc);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    white-space: nowrap;
}

.tool-visit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 210, 255, 0.3);
}

.tool-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
}

.tool-fav-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #8892b0;
    border-radius: 10px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.tool-fav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.tool-fav-btn.favorited {
    background: rgba(255, 215, 0, 0.1);
    border-color: rgba(255, 215, 0, 0.3);
    color: #ffd700;
}

.tool-section {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
}

.tool-section-title {
    font-size: 20px;
    color: #fff;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tool-desc {
    font-size: 16px;
    line-height: 1.8;
    color: #b8c5d9;
}

.tool-features {
    list-style: none;
    padding: 0;
}

.tool-features li {
    padding: 10px 0 10px 30px;
    position: relative;
    color: #b8c5d9;
    font-size: 15px;
    line-height: 1.6;
}

.tool-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00d2ff;
    font-weight: bold;
}

.tool-tutorial ol {
    padding-left: 20px;
    color: #b8c5d9;
    line-height: 1.8;
}

.tool-tutorial li {
    margin-bottom: 12px;
    font-size: 15px;
}

.similar-tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.similar-tool-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    transition: all 0.3s;
    display: block;
}

.similar-tool-card:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 210, 255, 0.3);
}

.similar-tool-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 12px;
}

.similar-tool-name {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
}

.similar-tool-desc {
    font-size: 12px;
    color: #8892b0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.category-btn {
    padding: 14px 28px;
    border: none;
    border-radius: 12px 12px 0 0;
    background: rgba(255, 255, 255, 0.05);
    color: #8892b0;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 15px;
    font-weight: 500;
    border-bottom: 3px solid transparent;
}

.category-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.category-btn.active {
    background: rgba(0, 210, 255, 0.15);
    color: #00d2ff;
    border-bottom-color: #00d2ff;
}

.section-title {
    font-size: 28px;
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 4px solid #00d2ff;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title .icon {
    font-size: 32px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(0, 210, 255, 0.5);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
}

.card-desc {
    font-size: 14px;
    color: #8892b0;
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 4px 12px;
    background: rgba(0, 210, 255, 0.15);
    color: #00d2ff;
    border-radius: 12px;
    font-size: 12px;
}

.tag.secondary {
    background: rgba(155, 89, 182, 0.15);
    color: #9b59b6;
}

footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 40px;
}

footer p {
    color: #8892b0;
    font-size: 14px;
}

.footer-main {
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #8892b0;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.footer-link:hover {
    background: rgba(0, 210, 255, 0.15);
    border-color: rgba(0, 210, 255, 0.3);
    color: #00d2ff;
    transform: translateY(-2px);
}

.footer-link .link-icon {
    font-size: 16px;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding-top: 30px;
}

.footer-bottom .copyright {
    color: #8892b0;
    font-size: 14px;
}

.footer-bottom .icp {
    font-size: 12px;
    color: #666;
}

.footer-sitemap {
    margin-top: 20px;
}

.footer-sitemap h4 {
    font-size: 14px;
    color: #8892b0;
    margin-bottom: 12px;
    font-weight: 500;
}

.sitemap-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.sitemap-tag {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    color: #8892b0;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.sitemap-tag:hover {
    background: rgba(155, 89, 182, 0.15);
    border-color: rgba(155, 89, 182, 0.3);
    color: #9b59b6;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00d2ff, #3a7bd5);
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 210, 255, 0.4);
}

@media (max-width: 768px) {
    h1 {
        font-size: 28px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .categories {
        gap: 8px;
    }
    
    .category-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .featured-card {
        padding: 16px;
    }
    
    .featured-icon {
        font-size: 32px;
    }
    
    .engine-bar {
        flex-direction: column;
        padding: 16px;
        gap: 12px;
    }
    
    .engine-bar .engine-list {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        justify-content: center;
    }
    
    .engine-bar .engine-item {
        padding: 8px 14px;
        font-size: 13px;
    }
    
    .engine-bar .engine-search {
        width: 100%;
        min-width: unset;
        flex-direction: column;
    }
    
    .engine-bar #engineSearchInput {
        width: 100%;
        padding: 12px 20px;
    }
    
    .engine-bar .engine-search-btn {
        width: 100%;
        padding: 12px 20px;
    }
    
    .kw-tabs {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .kw-tab {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .tool-header {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .tool-name {
        font-size: 24px;
    }
    
    .tool-actions {
        flex-direction: row;
        width: 100%;
        justify-content: center;
    }
    
    .tool-visit-btn {
        width: 100%;
    }
    
    .similar-tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .blog-header-top {
        flex-direction: column;
        gap: 15px;
    }
    
    .blog-search-box {
        margin-left: 0;
        max-width: 100%;
    }
    
    .blog-header h1 {
        font-size: 26px;
    }
    
    .blog-tags {
        gap: 8px;
    }
    
    .tag-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .tool-grid {
        grid-template-columns: 1fr;
        padding: 0 16px;
    }
    
    .hot-section {
        grid-template-columns: 1fr;
        padding: 0 16px;
    }
    
    .tool-detail {
        padding: 16px;
    }
    
    .tool-section {
        padding: 16px;
    }
    
    .tool-features li {
        font-size: 14px;
    }
    
    .similar-tool-card {
        padding: 12px;
    }
}