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

:root {
    --primary: #1a1a2e;
    --primary-light: #16213e;
    --accent: #e94560;
    --accent-hover: #c73a52;
    --accent-rgb: 233, 69, 96;
    --text: #2d2d2d;
    --text-light: #6b6b6b;
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --border: #e8e8e8;
    --card-bg: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.4);
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.14);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s ease;
    --gradient-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 55%, #0f3460 100%);
    --gradient-2: linear-gradient(135deg, #16213e 0%, #0f3460 50%, #533483 100%);
    --gradient-3: linear-gradient(135deg, #0f3460 0%, #1a1a2e 50%, #e94560 130%);
}

body.dark-mode {
    --primary: #e8e8e8;
    --primary-light: #d0d0d0;
    --accent: #ff5c77;
    --accent-hover: #e94560;
    --accent-rgb: 255, 92, 119;
    --text: #e0e0e0;
    --text-light: #a0a0a0;
    --bg: #121212;
    --bg-alt: #1a1a1a;
    --border: #333333;
    --card-bg: #1e1e1e;
    --glass-bg: rgba(30, 30, 30, 0.72);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
    --gradient-1: linear-gradient(135deg, #0a0a16 0%, #12122a 55%, #0a1f3d 100%);
    --gradient-2: linear-gradient(135deg, #12122a 0%, #0a1f3d 50%, #2a1a4a 100%);
    --gradient-3: linear-gradient(135deg, #0a1f3d 0%, #0a0a16 50%, #7a1f33 130%);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.8;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

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

button {
    font-family: inherit;
}

::selection {
    background: rgba(var(--accent-rgb), 0.25);
    color: var(--text);
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition), background var(--transition), backdrop-filter var(--transition);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
}

.navbar.scrolled {
    box-shadow: var(--shadow);
    background: var(--glass-bg);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: transform var(--transition);
}

.logo:hover {
    transform: scale(1.03);
    color: var(--primary);
}

.logo svg {
    width: 32px;
    height: 32px;
    filter: drop-shadow(0 4px 10px rgba(var(--accent-rgb), 0.4));
    transition: transform var(--transition);
}

.logo:hover svg {
    transform: rotate(-6deg) scale(1.06);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), #ff8a9b);
    border-radius: 2px;
    transition: width var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 22px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #ff6b81 100%);
    color: #fff;
    box-shadow: 0 6px 18px rgba(var(--accent-rgb), 0.35);
}

.btn-primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(var(--accent-rgb), 0.45);
    filter: brightness(1.05);
}

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

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    transition: all var(--transition);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(20deg) scale(1.05);
    box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.1);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: all var(--transition);
}

.mobile-menu-btn:hover {
    border-color: var(--accent);
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0 12px;
    height: 40px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.1);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    color: var(--text);
    font-size: 0.9rem;
    width: 160px;
    font-family: inherit;
}

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

.search-box button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    display: flex;
    align-items: center;
    padding: 0;
    transition: color var(--transition), transform var(--transition);
}

.search-box button:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid var(--border);
    z-index: 999;
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu ul a {
    color: var(--text);
    font-size: 1rem;
    font-weight: 500;
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    transition: color var(--transition), padding-left var(--transition);
}

.mobile-menu ul a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.mobile-menu ul li:last-child a {
    border-bottom: none;
}

.breadcrumb {
    padding: 80px 0 0;
    font-size: 0.85rem;
    color: var(--text-light);
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.breadcrumb li + li::before {
    content: '›';
    margin-right: 6px;
    color: var(--text-light);
}

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

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

.banner {
    position: relative;
    overflow: hidden;
    margin-top: 20px;
    border-radius: var(--radius);
    background: var(--primary);
    box-shadow: var(--shadow-lg);
}

.banner-slides {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.banner-slide {
    min-width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 72px 40px;
    color: #fff;
    text-align: center;
    flex-direction: column;
    gap: 16px;
    background-size: 200% 200%;
    animation: gradientShift 12s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.banner-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12), transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(var(--accent-rgb), 0.18), transparent 50%);
    pointer-events: none;
}

.banner-slide h2 {
    font-size: 2.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.7s ease both;
}

.banner-slide p {
    font-size: 1.05rem;
    opacity: 0.92;
    max-width: 620px;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.7s 0.12s ease both;
}

.banner-slide .btn {
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.7s 0.24s ease both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-dots {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}

.banner-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    border: none;
    transition: all var(--transition);
}

.banner-dot:hover {
    background: rgba(255, 255, 255, 0.7);
}

.banner-dot.active {
    background: #fff;
    width: 26px;
    border-radius: 6px;
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
}

.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    z-index: 3;
}

.banner-arrow:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: translateY(-50%) scale(1.08);
}

.banner-arrow.prev {
    left: 16px;
}

.banner-arrow.next {
    right: 16px;
}

.section {
    padding: 72px 0;
}

.section-alt {
    background: var(--bg-alt);
    transition: background var(--transition);
}

.section-header {
    text-align: center;
    margin-bottom: 52px;
}

.section-header h2 {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), #ff8a9b);
}

.section-header p {
    color: var(--text-light);
    font-size: 1rem;
    max-width: 640px;
    margin: 16px auto 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), #ff8a9b);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--accent-rgb), 0.35);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.14), rgba(var(--accent-rgb), 0.06));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--accent);
    transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.08) rotate(-4deg);
    box-shadow: 0 8px 20px rgba(var(--accent-rgb), 0.25);
}

.card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.75;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item {
    padding: 28px 20px;
    border-radius: var(--radius);
    background: var(--card-bg);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.stat-number {
    font-size: 2.35rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--accent), #ff8a9b);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 6px;
    display: block;
}

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

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.article-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent), #ff8a9b);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s ease;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--accent-rgb), 0.3);
}

.article-card:hover::after {
    transform: scaleY(1);
}

.article-meta {
    display: flex;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
}

.article-meta span:first-child::before {
    content: '📅';
    margin-right: 4px;
    font-size: 0.75rem;
}

.article-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1.55;
    transition: color var(--transition);
}

.article-card:hover h3 {
    color: var(--accent);
}

.article-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.75;
    flex: 1;
    margin-bottom: 14px;
}

.article-card .read-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
}

.article-card .read-more:hover {
    gap: 10px;
}

.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
    border-color: rgba(var(--accent-rgb), 0.4);
}

.faq-item.open {
    border-color: var(--accent);
    box-shadow: 0 6px 24px rgba(var(--accent-rgb), 0.12);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    text-align: left;
    font-family: inherit;
    gap: 16px;
    transition: color var(--transition);
}

.faq-question:hover {
    color: var(--accent);
}

.faq-question svg {
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
    color: var(--accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s ease, padding 0.45s ease;
}

.faq-item.open .faq-answer {
    max-height: 600px;
    padding: 0 24px 22px;
}

.faq-answer p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.85;
}

.howto-steps {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.howto-step {
    display: flex;
    gap: 20px;
    position: relative;
    padding-bottom: 32px;
}

.howto-step:last-child {
    padding-bottom: 0;
}

.howto-step::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 44px;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), transparent);
    opacity: 0.4;
}

.howto-step:last-child::before {
    display: none;
}

.howto-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #ff6b81);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    box-shadow: 0 6px 16px rgba(var(--accent-rgb), 0.35);
    transition: transform var(--transition), box-shadow var(--transition);
}

.howto-step:hover .howto-num {
    transform: scale(1.1);
    box-shadow: 0 8px 22px rgba(var(--accent-rgb), 0.5);
}

.howto-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 6px;
}

.howto-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.75;
}

.testimonial-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 12px;
    right: 22px;
    font-size: 4rem;
    line-height: 1;
    color: rgba(var(--accent-rgb), 0.12);
    font-family: Georgia, serif;
    pointer-events: none;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--accent-rgb), 0.3);
}

.testimonial-text {
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.85;
    margin-bottom: 18px;
    font-style: italic;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #ff8a9b);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    flex-shrink: 0;
    box-shadow: 0 6px 16px rgba(var(--accent-rgb), 0.35);
}

.testimonial-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.testimonial-info span {
    font-size: 0.8rem;
    color: var(--text-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: rgba(var(--accent-rgb), 0.35);
}

.contact-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.14), rgba(var(--accent-rgb), 0.06));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
    transition: transform var(--transition);
}

.contact-item:hover .contact-icon {
    transform: scale(1.08) rotate(-4deg);
}

.contact-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.65;
}

.footer {
    background: var(--gradient-1);
    color: #fff;
    padding: 56px 0 28px;
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.15), transparent 70%);
    pointer-events: none;
}

body.dark-mode .footer {
    background: #0a0a0a;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.75;
    margin-top: 14px;
}

.footer h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 18px;
    opacity: 0.95;
}

.footer ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer ul a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.85rem;
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.footer ul a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.8rem;
    opacity: 0.7;
    position: relative;
    z-index: 1;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
    color: #fff;
}

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #ff6b81);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 22px rgba(var(--accent-rgb), 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px) scale(0.9);
    transition: all var(--transition);
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 30px rgba(var(--accent-rgb), 0.6);
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.tag {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    font-weight: 500;
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    transition: all var(--transition);
}

.tag:hover {
    background: rgba(var(--accent-rgb), 0.2);
    transform: translateY(-2px);
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-alt) 25%, var(--border) 50%, var(--bg-alt) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

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

img[loading="lazy"] {
    transition: opacity 0.3s ease;
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .banner-slide h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .search-box {
        display: none;
    }

    .grid-3,
    .grid-2,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .banner-slide {
        padding: 52px 24px;
    }

    .banner-slide h2 {
        font-size: 1.5rem;
    }

    .banner-slide p {
        font-size: 0.95rem;
    }

    .section {
        padding: 52px 0;
    }

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

    .section-header h2 {
        font-size: 1.5rem;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .banner-arrow {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
    }

    .stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .stat-item {
        padding: 20px 12px;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .banner-slide {
        padding: 40px 18px;
    }

    .banner-slide h2 {
        font-size: 1.3rem;
    }

    .banner-arrow {
        width: 32px;
        height: 32px;
    }

    .banner-arrow.prev {
        left: 8px;
    }

    .banner-arrow.next {
        right: 8px;
    }

    .card {
        padding: 24px 20px;
    }

    .article-card {
        padding: 22px 20px;
    }

    .contact-item {
        padding: 16px;
    }

    .howto-step {
        gap: 14px;
    }

    .howto-num {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }

    .howto-step::before {
        left: 17px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}