:root {
    --brand-primary: #3a6ea5;
    --brand-primary-rgb: 58, 110, 165;
    --brand-secondary: #e6b422;
    --brand-secondary-rgb: 230, 180, 34;
    --brand-dark: #1a1f2e;
    --brand-light: #f8f9fc;
    --text-main: #222;
    --text-muted: #555;
    --bg-body: #ffffff;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.72);
    --border-color: #e0e4ec;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-full: 999px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-hero: linear-gradient(135deg, #1a1f2e 0%, #2d3a55 50%, #3a6ea5 100%);
    --gradient-brand: linear-gradient(135deg, #3a6ea5 0%, #5b8fd4 100%);
    --gradient-gold: linear-gradient(135deg, #e6b422 0%, #f0c75e 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
}

[data-theme="dark"] {
    --brand-primary: #5b8fd4;
    --brand-primary-rgb: 91, 143, 212;
    --brand-secondary: #f0c75e;
    --brand-secondary-rgb: 240, 199, 94;
    --brand-dark: #0d1117;
    --brand-light: #161b22;
    --text-main: #e6edf3;
    --text-muted: #8b949e;
    --bg-body: #0d1117;
    --bg-card: #161b22;
    --bg-glass: rgba(22, 27, 34, 0.78);
    --border-color: #30363d;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 56px rgba(0, 0, 0, 0.65);
    --gradient-hero: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #1f2a3d 100%);
    --gradient-brand: linear-gradient(135deg, #5b8fd4 0%, #3a6ea5 100%);
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--brand-secondary);
}

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

ul, ol {
    padding-left: 1.5em;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    backdrop-filter: blur(18px) saturate(160%);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--brand-primary);
    white-space: nowrap;
    transition: transform var(--transition-fast);
}

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

.logo svg {
    width: 36px;
    height: 36px;
    transition: transform var(--transition-base);
}

.logo:hover svg {
    transform: rotate(-8deg) scale(1.08);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

.nav-menu li a {
    display: block;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--text-main);
    font-weight: 500;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 0;
    height: 2px;
    background: var(--gradient-gold);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width var(--transition-base);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: var(--brand-light);
    color: var(--brand-primary);
    transform: translateY(-1px);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
    width: 24px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--brand-light);
    border-radius: var(--radius-full);
    padding: 4px 12px;
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(var(--brand-primary-rgb), 0.15);
    background: var(--bg-card);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    padding: 6px 4px;
    font-size: 0.9rem;
    color: var(--text-main);
    width: 120px;
    font-family: inherit;
    transition: width var(--transition-base);
}

.search-box input:focus {
    width: 160px;
}

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

.search-box button {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 50%;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.search-box button:hover {
    background: rgba(var(--brand-primary-rgb), 0.12);
    transform: scale(1.1);
}

.theme-toggle {
    background: var(--brand-light);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-main);
    transition: background var(--transition-fast), transform var(--transition-base), border-color var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--border-color);
    transform: rotate(20deg) scale(1.08);
}

.theme-toggle:active {
    transform: rotate(20deg) scale(0.95);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text-main);
    font-size: 1.2rem;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: var(--brand-light);
    transform: scale(1.05);
}

.hero-banner {
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
    color: #fff;
    padding: 0;
    min-height: 380px;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(var(--brand-secondary-rgb), 0.18) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: floatGlow 8s ease-in-out infinite;
}

.hero-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(var(--brand-primary-rgb), 0.22) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: floatGlow 10s ease-in-out infinite reverse;
}

@keyframes floatGlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

.hero-slide {
    display: none;
    padding: 70px 0 60px;
    animation: fadeIn 0.6s ease;
    position: relative;
    z-index: 2;
}

.hero-slide.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-content {
    max-width: 720px;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-glass);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    padding: 6px 18px;
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 20px;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    transition: transform var(--transition-base), background var(--transition-base);
}

.hero-badge:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.2);
}

.hero-content h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 18px;
    color: #fff;
    letter-spacing: -0.02em;
}

.hero-content h1 span {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--brand-secondary);
}

.hero-content p {
    font-size: 1.08rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
    max-width: 600px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-fast);
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary {
    background: var(--gradient-gold);
    color: #1a1f2e;
    box-shadow: 0 6px 18px rgba(var(--brand-secondary-rgb), 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(var(--brand-secondary-rgb), 0.5);
    color: #1a1f2e;
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.45);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
}

.hero-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
}

.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: background var(--transition-base), transform var(--transition-base), width var(--transition-base);
    border: none;
    padding: 0;
}

.hero-dot:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.2);
}

.hero-dot.active {
    background: var(--gradient-gold);
    width: 28px;
    border-radius: var(--radius-full);
    transform: scale(1);
}

.stats-section {
    background: var(--bg-card);
    padding: 50px 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(var(--brand-primary-rgb), 0.3), transparent);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 10px;
    transition: transform var(--transition-base);
}

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

.stat-item .stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--brand-primary);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}

.stat-item .stat-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.section {
    padding: 70px 0;
    position: relative;
}

.section-alt {
    background: var(--brand-light);
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
}

.section-header h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-main);
    position: relative;
    display: inline-block;
    letter-spacing: -0.01em;
}

.section-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gradient-gold);
    margin: 12px auto 0;
    border-radius: 3px;
    transition: width var(--transition-base);
}

.section-header:hover h2::after {
    width: 100px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--brand-primary-rgb), 0.3);
}

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

.card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-main);
    transition: color var(--transition-fast);
}

.card:hover h3 {
    color: var(--brand-primary);
}

.card h4 {
    font-size: 1.02rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}

.card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.75;
}

.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.article-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

.article-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-base);
}

.article-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: rgba(var(--brand-secondary-rgb), 0.35);
}

.article-item:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.article-meta {
    font-size: 0.82rem;
    color: var(--text-muted);
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.article-meta span:first-child::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand-secondary);
    display: inline-block;
}

.article-item h3 {
    font-size: 1.08rem;
    font-weight: 700;
    line-height: 1.5;
}

.article-item h3 a {
    color: var(--text-main);
    transition: color var(--transition-fast);
}

.article-item h3 a:hover {
    color: var(--brand-primary);
}

.article-summary {
    font-size: 0.92rem;
    color: var(--text-muted);
    flex: 1;
    line-height: 1.75;
}

.read-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--brand-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition-base), color var(--transition-fast);
}

.read-more:hover {
    gap: 10px;
    color: var(--brand-secondary);
}

.faq-list {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow);
    border-color: rgba(var(--brand-primary-rgb), 0.25);
}

.faq-item.open {
    border-color: rgba(var(--brand-primary-rgb), 0.4);
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    padding: 20px 24px;
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-family: inherit;
    line-height: 1.5;
    transition: color var(--transition-fast), background var(--transition-fast);
}

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

.faq-question .faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--brand-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--brand-primary);
    transition: transform var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--gradient-gold);
    color: #1a1f2e;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.85;
}

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

.howto-steps {
    max-width: 860px;
    margin: 0 auto;
    counter-reset: step-counter;
}

.howto-step {
    position: relative;
    padding: 0 0 32px 68px;
    counter-increment: step-counter;
    transition: transform var(--transition-base);
}

.howto-step:hover {
    transform: translateX(4px);
}

.howto-step::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(var(--brand-primary-rgb), 0.35);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.howto-step:hover::before {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(var(--brand-primary-rgb), 0.5);
}

.howto-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 21px;
    top: 50px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--border-color), transparent);
}

.howto-step h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-main);
}

.howto-step p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.75;
}

.table-wrap {
    overflow-x: auto;
    margin: 24px 0;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.94rem;
    min-width: 600px;
}

th, td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-fast);
}

th {
    background: var(--brand-light);
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
}

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: rgba(var(--brand-primary-rgb), 0.04);
}

tr:last-child td {
    border-bottom: none;
}

.breadcrumb {
    font-size: 0.88rem;
    color: var(--text-muted);
    padding: 16px 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

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

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

.breadcrumb span {
    color: var(--text-main);
    font-weight: 500;
}

.site-footer {
    background: var(--brand-dark);
    color: #c9d1d9;
    padding: 60px 0 30px;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(var(--brand-secondary-rgb), 0.4), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 36px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 18px;
    font-weight: 700;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--gradient-gold);
    border-radius: 2px;
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #8b949e;
    font-size: 0.88rem;
    transition: color var(--transition-fast), padding-left var(--transition-fast);
    position: relative;
}

.footer-col ul li a:hover {
    color: var(--brand-secondary);
    padding-left: 6px;
}

.footer-col address {
    font-style: normal;
    color: #8b949e;
    line-height: 2;
    font-size: 0.88rem;
}

.footer-bottom {
    border-top: 1px solid #30363d;
    padding-top: 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-size: 0.82rem;
    color: #8b949e;
}

.footer-bottom a {
    color: #8b949e;
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--brand-secondary);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(var(--brand-primary-rgb), 0.45);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.08);
    box-shadow: 0 12px 32px rgba(var(--brand-primary-rgb), 0.6);
}

.back-to-top:active {
    transform: translateY(-2px) scale(1);
}

.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);
}

.lazy-img {
    background: var(--brand-light);
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    min-height: 180px;
}

.lazy-img svg {
    width: 100%;
    height: auto;
    display: block;
}

.tag {
    display: inline-block;
    background: var(--brand-light);
    color: var(--brand-primary);
    border-radius: var(--radius-full);
    padding: 3px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 6px;
    margin-bottom: 6px;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.tag:hover {
    background: var(--gradient-brand);
    color: #fff;
    transform: translateY(-2px);
}

blockquote {
    border-left: 4px solid var(--brand-secondary);
    padding: 16px 22px;
    margin: 24px 0;
    background: var(--brand-light);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-muted);
    font-style: italic;
    position: relative;
    transition: border-color var(--transition-base), background var(--transition-base);
}

blockquote:hover {
    border-left-color: var(--brand-primary);
}

blockquote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 10px;
    font-size: 3rem;
    color: rgba(var(--brand-secondary-rgb), 0.25);
    font-family: Georgia, serif;
    line-height: 1;
}

.anchor-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 36px;
}

.anchor-nav a {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 8px 20px;
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.anchor-nav a:hover {
    background: var(--gradient-brand);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(var(--brand-primary-rgb), 0.35);
}

.author-box {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 30px 0;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.author-box:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.author-avatar {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(var(--brand-primary-rgb), 0.35);
    transition: transform var(--transition-base);
}

.author-box:hover .author-avatar {
    transform: scale(1.08) rotate(-5deg);
}

.author-info h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.author-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.promise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 22px;
}

.promise-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 22px;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.promise-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: rgba(var(--brand-primary-rgb), 0.3);
}

.promise-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--brand-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--brand-primary);
    transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

.promise-item:hover .promise-icon {
    background: var(--gradient-brand);
    color: #fff;
    transform: scale(1.08);
}

.promise-item h4 {
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.promise-item p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

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

.testimonial::before {
    content: '"';
    position: absolute;
    top: -10px;
    right: 20px;
    font-size: 5rem;
    color: rgba(var(--brand-primary-rgb), 0.06);
    font-family: Georgia, serif;
    line-height: 1;
    pointer-events: none;
}

.testimonial:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--brand-secondary-rgb), 0.35);
}

.testimonial-stars {
    color: var(--brand-secondary);
    font-size: 1rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.testimonial p {
    font-size: 0.94rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.85;
}

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

.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.testimonial:hover .testimonial-avatar {
    transform: scale(1.1);
}

.testimonial-author-info strong {
    display: block;
    font-size: 0.92rem;
}

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

.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 22px;
}

.news-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 22px;
    transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

.news-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-gold);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-base);
}

.news-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: rgba(var(--brand-secondary-rgb), 0.3);
}

.news-item:hover::before {
    transform: scaleY(1);
}

.news-date {
    font-size: 0.8rem;
    color: var(--brand-primary);
    font-weight: 600;
    margin-bottom: 8px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-date::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand-secondary);
}

.news-item h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.5;
    transition: color var(--transition-fast);
}

.news-item:hover h4 {
    color: var(--brand-primary);
}

.news-item p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.friend-links a {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.friend-links a:hover {
    color: var(--brand-primary);
    border-color: var(--brand-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--brand-primary-rgb), 0.2);
}

.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
}

.sitemap-col {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.sitemap-col:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.sitemap-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.sitemap-col ul {
    list-style: none;
    padding: 0;
}

.sitemap-col ul li {
    margin-bottom: 8px;
}

.sitemap-col ul li a {
    font-size: 0.86rem;
    color: var(--text-muted);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.sitemap-col ul li a:hover {
    color: var(--brand-primary);
    padding-left: 4px;
}

.legal-section {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.9;
}

.legal-section h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 18px 0 8px;
    position: relative;
    padding-left: 14px;
}

.legal-section h4::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 16px;
    border-radius: 2px;
    background: var(--gradient-gold);
}

.legal-section p {
    margin-bottom: 8px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 900px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg-glass);
        -webkit-backdrop-filter: blur(20px) saturate(160%);
        backdrop-filter: blur(20px) saturate(160%);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 16px 20px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu li a {
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        width: 100%;
    }

    .nav-menu li a::after {
        display: none;
    }

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

    .search-box input {
        width: 80px;
    }

    .search-box input:focus {
        width: 120px;
    }

    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }

    .article-list {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 600px) {
    .header-inner {
        height: 60px;
    }

    .logo {
        font-size: 1.15rem;
    }

    .logo svg {
        width: 30px;
        height: 30px;
    }

    .search-box {
        display: none;
    }

    .hero-banner {
        min-height: 320px;
    }

    .hero-slide {
        padding: 50px 0 60px;
    }

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

    .hero-content p {
        font-size: 0.98rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

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

    .section {
        padding: 50px 0;
    }

    .section-header {
        margin-bottom: 32px;
    }

    .card-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-item .stat-number {
        font-size: 1.8rem;
    }

    .howto-step {
        padding-left: 56px;
    }

    .howto-step::before {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }

    .howto-step:not(:last-child)::after {
        left: 18px;
        top: 44px;
    }

    .author-box {
        flex-direction: column;
        text-align: center;
    }

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

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

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

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

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

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

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

    .faq-question {
        padding: 16px 18px;
        font-size: 0.96rem;
    }

    .faq-answer {
        padding: 0 18px;
    }

    .faq-item.open .faq-answer {
        padding: 0 18px 18px;
    }

    .table-wrap {
        border-radius: var(--radius-sm);
    }

    th, td {
        padding: 10px 12px;
        font-size: 0.86rem;
    }
}

@media (max-width: 380px) {
    .container {
        padding: 0 14px;
    }

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

    .hero-content h1 {
        font-size: 1.4rem;
    }
}

@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;
    }
}

@media print {
    .site-header,
    .hero-banner,
    .back-to-top,
    .theme-toggle,
    .mobile-menu-btn,
    .search-box {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .card,
    .article-item,
    .faq-item {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}

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

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

::-webkit-scrollbar-track {
    background: var(--brand-light);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
    border: 2px solid var(--brand-light);
}

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

:focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
    border-radius: 4px;
}