/* ========== 基础重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #2563eb;
    --primary-blue-dark: #1d4ed8;
    --primary-blue-light: #3b82f6;
    --primary-blue-lighter: #60a5fa;
    
    --bg-white: #ffffff;
    --bg-gray-50: #f8fafc;
    --bg-gray-100: #f1f5f9;
    --bg-gray-200: #e2e8f0;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-blue: 0 10px 40px -10px rgba(37, 99, 235, 0.3);
    
    --nav-height: 64px;
    --container-max: 1200px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-white);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.text-blue {
    color: var(--primary-blue);
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 22px;
    height: 22px;
    background: var(--primary-blue);
    border-radius: 50%;
    position: absolute;
    left: -3px;
    top: 65%;
    transform: translateY(-50%);
    z-index: 0;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    position: relative;
    z-index: 1;
    margin-left: 6px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px 2px 0 0;
}

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

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-icon {
    width: 16px;
    height: 16px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 1.5px solid var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-2px);
}

/* ========== Hero区域 ========== */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: var(--nav-height);
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--bg-gray-50);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.dragon-lineart {
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 700px;
    height: 700px;
    opacity: 0.03;
    background: 
        radial-gradient(ellipse at 30% 40%, var(--primary-blue) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 60%, var(--primary-blue-dark) 0%, transparent 40%);
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 400'%3E%3Cpath d='M200 50c-30 20-50 50-60 80-10 30-10 60 0 90 10 30 30 50 60 70 30 20 60 20 90 10 30-10 50-30 60-60 10-30 10-60 0-90-10-30-30-60-60-80-30-20-60-30-90-20z' fill='none' stroke='black' stroke-width='1'/%3E%3C/svg%3E");
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 400'%3E%3Cpath d='M200 50c-30 20-50 50-60 80-10 30-10 60 0 90 10 30 30 50 60 70 30 20 60 20 90 10 30-10 50-30 60-60 10-30 10-60 0-90-10-30-30-60-60-80-30-20-60-30-90-20z' fill='none' stroke='black' stroke-width='1'/%3E%3C/svg%3E");
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
}

.hero-glow {
    position: absolute;
    top: 30%;
    left: 60%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 100px;
    font-size: 13px;
    color: var(--primary-blue);
    font-weight: 500;
    margin-bottom: 24px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #10b981;
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-title-main {
    font-size: 60px;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -2px;
}

.hero-title-sub {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 8px;
}

.hero-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
}

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

.stat-value {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-color);
}

/* Hero软件预览 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.software-preview {
    width: 100%;
    max-width: 560px;
}

.window-frame {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl), var(--shadow-blue);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.window-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-gray-50);
    border-bottom: 1px solid var(--border-color);
}

.window-logo {
    display: flex;
    align-items: center;
    position: relative;
    gap: 0;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon-small {
    width: 16px;
    height: 16px;
    background: var(--primary-blue);
    border-radius: 50%;
    position: absolute;
    left: -2px;
    top: 65%;
    transform: translateY(-50%);
    z-index: 0;
}

.logo-text-small {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
    margin-left: 4px;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.win-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ddd;
}

.win-btn.minimize { background: #fbbf24; }
.win-btn.maximize { background: #10b981; }
.win-btn.close { background: #ef4444; }

.window-body {
    display: flex;
    height: 380px;
}

.sidebar {
    width: 180px;
    background: var(--bg-gray-100);
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.sidebar-item svg {
    width: 16px;
    height: 16px;
}

.sidebar-item.active {
    background: white;
    color: var(--text-primary);
    font-weight: 600;
    border-left-color: var(--primary-blue);
}

.main-content {
    flex: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow: hidden;
}

.banner {
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-md);
    padding: 20px;
    color: white;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    right: -20px;
    top: -20px;
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.banner::after {
    content: '';
    position: absolute;
    right: 40px;
    bottom: -30px;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.banner-tag {
    display: inline-block;
    padding: 4px 10px;
    background: #ef4444;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.banner-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.banner-date {
    font-size: 12px;
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

.banner-btn {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.news-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.news-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
}

.news-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.news-card {
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease;
    text-decoration: none;
    display: block;
}

.news-card:hover {
    transform: translateY(-2px);
}

.news-thumb {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.news-thumb.thumb-1 {
    background: linear-gradient(135deg, #1e3a8a 0%, #7c3aed 100%);
}

.news-thumb.thumb-2 {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
}

.news-thumb.thumb-3 {
    background: linear-gradient(135deg, #dc2626 0%, #f97316 100%);
}

.news-text {
    padding: 6px;
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-gray-50);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========== 通用Section样式 ========== */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== 功能特性 ========== */
.features {
    background: var(--bg-white);
}

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

.feature-card {
    padding: 32px 24px;
    background: var(--bg-gray-50);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    background: white;
    border-color: var(--primary-blue-lighter);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.icon-blue {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-blue);
}

.icon-purple {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.icon-green {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.icon-orange {
    background: rgba(249, 115, 22, 0.1);
    color: #f97316;
}

.feature-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== 皮肤库 ========== */
.skin-library {
    background: var(--bg-gray-50);
}

.skin-showcase {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.skin-filter {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.filter-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 8px 16px;
    background: var(--bg-gray-100);
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.filter-tab:hover {
    background: var(--bg-gray-200);
}

.filter-tab.active {
    background: var(--primary-blue);
    color: white;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-gray-100);
    border-radius: 6px;
    width: 200px;
}

.search-box svg {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 13px;
    color: var(--text-primary);
    font-family: inherit;
}

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

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

.champion-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.champion-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue-lighter);
}

.champion-thumb {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
}

.champion-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    display: block;
}

.champion-info {
    padding: 10px 12px;
    background: white;
}

.champion-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.champion-en {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

.view-more {
    text-align: center;
    margin-top: 32px;
}

/* ========== 美化资源 ========== */
.beautify {
    background: var(--bg-white);
}

.beautify-content {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.beautify-text {
    text-align: center;
}

.beautify-text .section-title {
    text-align: center;
}

.beautify-text .section-desc {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.beautify-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.beautify-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.beautify-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.beautify-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
}

.beautify-icon svg {
    width: 28px;
    height: 28px;
}

.beautify-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.beautify-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ========== 价格方案 ========== */
.pricing {
    background: var(--bg-gray-50);
}

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

.pricing-card {
    position: relative;
    padding: 32px 24px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.popular {
    border-color: var(--primary-blue);
    border-width: 2px;
    box-shadow: var(--shadow-blue);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--primary-blue);
    color: white;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.pricing-header {
    margin-bottom: 24px;
    text-align: center;
}

.pricing-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
    margin-bottom: 8px;
}

.price-symbol {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
}

.price-amount {
    font-size: 42px;
    font-weight: 900;
    color: var(--primary-blue);
    line-height: 1;
}

.price-period {
    font-size: 13px;
    color: var(--text-muted);
}

.pricing-desc {
    font-size: 13px;
    color: var(--text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: 28px;
    flex: 1;
}

.pricing-features li {
    padding: 10px 0;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    position: relative;
    padding-left: 24px;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: 700;
    font-size: 14px;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 12px;
    text-align: center;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pricing-btn.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary-blue);
    color: var(--primary-blue);
}

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

.pricing-btn.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.pricing-btn.btn-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* ========== 下载区域 ========== */
.download-section {
    background: var(--bg-white);
    padding: 60px 0;
}

.download-card {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: var(--radius-xl);
    padding: 60px;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    right: -100px;
    top: -100px;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.download-card::after {
    content: '';
    position: absolute;
    right: 50px;
    bottom: -80px;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.download-content {
    position: relative;
    z-index: 1;
}

.download-content h2 {
    font-size: 32px;
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
}

.download-content > p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 28px;
}

.download-info {
    display: flex;
    gap: 32px;
    margin-bottom: 28px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.info-value {
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.download-buttons {
    display: flex;
    gap: 16px;
}

.download-buttons .btn-primary {
    background: white;
    color: var(--primary-blue);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.download-buttons .btn-primary:hover {
    background: #f8fafc;
}

.download-buttons .btn-outline {
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

.download-buttons .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.download-visual {
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.download-icon {
    opacity: 0.8;
}

.download-icon svg {
    width: 180px;
    height: 180px;
}

/* ========== FAQ ========== */
.faq {
    background: var(--bg-gray-50);
}

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

.faq-item {
    margin-bottom: 12px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary-blue-lighter);
}

.faq-item.active {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-gray-50);
}

.faq-num {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary-blue);
    flex-shrink: 0;
    width: 32px;
}

.faq-text {
    flex: 1;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.faq-arrow {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-arrow svg {
    width: 100%;
    height: 100%;
}

.faq-item.active .faq-arrow {
    transform: rotate(180deg);
    color: var(--primary-blue);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 72px 0;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 72px 24px;
}

.faq-answer p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--text-primary);
    padding: 60px 0 30px;
    color: white;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    margin-left: -6px;
}

.footer-logo .logo-icon {
    width: 22px;
    height: 22px;
    background: rgba(255, 255, 255, 0.2);
}

.footer-logo .logo-text {
    color: #fff;
}

.footer-tagline {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-contact {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.group-link {
    color: var(--primary-blue-light);
    text-decoration: none;
    font-weight: 600;
}

.group-link:hover {
    text-decoration: underline;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
    color: white;
}

.footer-col a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom p {
    margin-bottom: 6px;
}

.footer-disclaimer {
    font-size: 12px;
    opacity: 0.8;
}

/* ========== Toast提示 ========== */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.toast {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.85) 0%, rgba(59, 130, 246, 0.85) 100%);
    backdrop-filter: blur(8px);
    color: white;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
    animation: toastSlideDown 0.4s ease forwards;
    white-space: nowrap;
}

.toast svg {
    width: 18px;
    height: 18px;
    color: white;
    flex-shrink: 0;
}

.toast.toast-out {
    animation: toastSlideUp 0.3s ease forwards;
}

@keyframes toastSlideDown {
    from {
        opacity: 0;
        transform: translateY(-60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes toastSlideUp {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-60px);
    }
}

/* ========== 左侧悬浮提示 ========== */
.floating-tip {
    position: fixed;
    left: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    color: white;
    border-radius: 12px;
    z-index: 9999;
    max-width: 300px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.floating-tip:hover {
    transform: translateY(-2px);
}

.floating-tip-warning {
    bottom: 24px;
    background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.35);
    animation: floatPulse 3s ease-in-out infinite;
}

.floating-tip-service {
    bottom: 110px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
    animation: floatPulse 3s ease-in-out infinite;
}

@keyframes floatPulse {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.floating-tip-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-tip-icon svg {
    width: 18px;
    height: 18px;
}

.floating-tip-text {
    line-height: 1.3;
}

.floating-tip-title {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 2px;
}

.floating-tip-desc {
    font-size: 12px;
    opacity: 0.9;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .software-preview {
        max-width: 480px;
        margin: 0 auto;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .beautify-content {
        gap: 40px;
    }
    
    .download-card {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 40px;
    }
    
    .download-info {
        justify-content: center;
    }
    
    .download-buttons {
        justify-content: center;
    }
    
    .download-visual {
        order: -1;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title-main {
        font-size: 44px;
    }
    
    .hero-title-sub {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .champions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 24px 20px;
    }
    
    .faq-answer {
        padding: 0 24px 0;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .window-body {
        height: 300px;
    }
    
    .sidebar {
        width: 120px;
    }
    
    .news-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-actions .btn {
        padding: 8px 14px;
        font-size: 13px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .champions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .download-info {
        flex-direction: column;
        gap: 16px;
    }
}