/* 新设计风格 - 暖色调商务风格 */
:root {
    --primary: #ff6b35;
    --primary-dark: #e55a2b;
    --primary-light: #ff8c69;
    --secondary: #2d3748;
    --text: #4a5568;
    --text-light: #718096;
    --background: #fff8f5;
    --background-alt: #fef5f0;
    --white: #ffffff;
    --border: #e2e8f0;
    --success: #38a169;
    --warning: #ed8936;
    --error: #e53e3e;
    --accent: #f7931e;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;
}

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

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 顶部公告栏 */
.announcement-bar {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    padding: 0.75rem 0;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.announcement-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.announcement-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    text-align: center;
}

.announcement-content i {
    font-size: 1.1rem;
}

.announcement-cta {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    transition: border-color 0.2s;
}

.announcement-cta:hover {
    border-color: var(--white);
}

/* 头部导航 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transform: rotate(-15deg);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.logo-icon i {
    font-size: 1.5rem;
    color: var(--white);
    transform: rotate(15deg);
}

.logo-content {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-family: 'Oswald', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--secondary);
    line-height: 1;
    margin: 0;
}

.logo-highlight {
    color: var(--primary);
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 400;
    margin-top: 0.125rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color 0.3s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s;
}

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

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

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

.download-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.download-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--accent));
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Hero 区域 */
.hero {
    position: relative;
    padding: 4rem 0 5rem;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--background-alt) 0%, var(--white) 50%, var(--background-alt) 100%);
    z-index: 0;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(247, 147, 30, 0.08) 0%, transparent 50%),
        linear-gradient(45deg, transparent 30%, rgba(255, 107, 53, 0.05) 50%, transparent 70%);
    opacity: 0.7;
}

.hero-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 500px;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    width: fit-content;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.hero-title {
    font-family: 'Oswald', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--secondary);
    margin: 0;
}

.title-highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text);
    max-width: 90%;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 1rem 0;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--white);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.stat-item:hover {
    border-color: var(--primary);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    flex-direction: column;
    min-width: 180px;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--accent));
}

.btn-outline {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-subtitle {
    font-size: 0.75rem;
    opacity: 0.8;
    font-weight: 400;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image-container {
    position: relative;
    max-width: 100%;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
}

.image-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--success);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    box-shadow: 0 4px 12px rgba(56, 161, 105, 0.3);
}

/* 通用区域样式 */
.section {
    padding: 4rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 产品概览区域 */
.overview {
    background: var(--white);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.overview-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s;
    transform-origin: left;
}

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

.overview-card:hover {
    border-color: var(--primary);
}

.card-featured {
    grid-row: span 2;
    background: linear-gradient(135deg, var(--background-alt), var(--white));
    border: 2px solid var(--primary);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.card-icon i {
    font-size: 1.25rem;
    color: var(--white);
}

.card-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0;
}

.card-content p {
    color: var(--text);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--text);
}

.feature-list i {
    color: var(--success);
    font-size: 1rem;
}

/* 工具分类区域 */
.tools {
    background: var(--background-alt);
}

.tools-categories {
    display: grid;
    gap: 2.5rem;
}

.tool-category {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--background-alt);
}

.category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
}

.category-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.category-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 0.25rem 0;
}

.tool-count {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.tool-item {
    background: var(--background-alt);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.tool-item:hover {
    border-color: var(--primary);
    background: var(--white);
}

.tool-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 0.5rem 0;
}

.tool-info p {
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.tool-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 兼容性区域 */
.compatibility {
    background: var(--white);
}

.compatibility-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.compat-card {
    background: var(--background-alt);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.compat-card:hover {
    border-color: var(--primary);
}

.compat-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.compat-header i {
    font-size: 1.5rem;
    color: var(--primary);
}

.compat-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0;
}

.compat-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.compat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--white);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.support-status {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.supported {
    background: var(--success);
    color: var(--white);
}

.limited {
    background: var(--warning);
    color: var(--white);
}

.system-requirements {
    background: var(--background-alt);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.system-requirements h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.req-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

.req-item i {
    font-size: 2rem;
    color: var(--primary);
}

.req-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 0.5rem 0;
}

.req-content p {
    font-size: 0.9rem;
    color: var(--text);
    margin: 0;
}

/* 下载区域 */
.download {
    background: var(--background-alt);
}

.download-options {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.download-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2.5rem;
    border: 1px solid var(--border);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.download-card.featured {
    border: 2px solid var(--primary);
}

.download-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.download-header {
    margin-bottom: 2rem;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--warning);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.download-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 0.5rem 0;
}

.version-info {
    color: var(--text-light);
    font-size: 0.95rem;
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--text);
}

.feature-item i {
    color: var(--success);
    font-size: 1rem;
}

.download-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.download-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.download-stats,
.download-info,
.download-security {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.download-stats h4,
.download-info h4,
.download-security h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 1rem 0;
}

.download-stats i,
.download-info i,
.download-security i {
    color: var(--primary);
}

.stat-grid {
    display: grid;
    gap: 1rem;
}

.stat {
    text-align: center;
    padding: 0.75rem;
    background: var(--background-alt);
    border-radius: 8px;
}

.stat-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.info-label {
    color: var(--text-light);
}

.info-value {
    color: var(--text);
    font-weight: 500;
}

.security-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.security-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text);
}

.security-item i {
    color: var(--success);
}

/* 教程区域 */
.tutorials {
    background: var(--white);
}

.tutorial-navigation {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    background: var(--background-alt);
    padding: 0.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.tutorial-tab {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s;
}

.tutorial-tab.active {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.tutorial-content {
    position: relative;
}

.tutorial-panel {
    display: none;
}

.tutorial-panel.active {
    display: block;
}

.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.tutorial-step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.step-content {
    flex: 1;
    background: var(--background-alt);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 1rem 0;
}

.step-content p {
    color: var(--text);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.step-note,
.step-warning {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.step-note {
    background: rgba(56, 161, 105, 0.1);
    border-left: 4px solid var(--success);
}

.step-warning {
    background: rgba(237, 137, 54, 0.1);
    border-left: 4px solid var(--warning);
}

.step-note i {
    color: var(--success);
    margin-top: 0.125rem;
}

.step-warning i {
    color: var(--warning);
    margin-top: 0.125rem;
}

.step-tips {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.tip-item {
    padding: 0.75rem;
    background: var(--white);
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 0.9rem;
    line-height: 1.5;
}

.tip-item strong {
    color: var(--primary);
}

.advanced-tutorials {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tutorial-card {
    background: var(--background-alt);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.tutorial-card:hover {
    border-color: var(--primary);
}

.tutorial-card h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 1rem 0;
}

.tutorial-card i {
    color: var(--primary);
}

.tutorial-card p {
    color: var(--text);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.tutorial-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tutorial-card li {
    font-size: 0.9rem;
    color: var(--text);
    position: relative;
    padding-left: 1rem;
}

.tutorial-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.troubleshooting-guide {
    max-width: 800px;
    margin: 0 auto;
}

.trouble-items {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.trouble-item {
    background: var(--background-alt);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border);
}

.trouble-question {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.trouble-answer p {
    color: var(--text);
    margin-bottom: 1rem;
}

.trouble-answer ol {
    padding-left: 1.5rem;
}

.trouble-answer li {
    color: var(--text);
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

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

.tip-card {
    background: var(--background-alt);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.tip-card:hover {
    border-color: var(--primary);
}

.tip-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.tip-icon i {
    font-size: 1.25rem;
    color: var(--white);
}

.tip-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 1rem 0;
}

.tip-card p {
    color: var(--text);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.tip-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tip-card li {
    font-size: 0.9rem;
    color: var(--text);
    position: relative;
    padding-left: 1rem;
}

.tip-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* 用户社区区域 */
.community {
    background: var(--background-alt);
}

.community-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.stat-card:hover {
    border-color: var(--primary);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
}

.stat-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.stat-content .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-content .stat-label {
    font-size: 1rem;
    color: var(--text);
    font-weight: 600;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.testimonial-card:hover {
    border-color: var(--primary);
}

.testimonial-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--background-alt), var(--white));
    border: 2px solid var(--primary);
}

.testimonial-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.user-avatar i {
    font-size: 1.25rem;
    color: var(--white);
}

.user-info {
    flex: 1;
}

.user-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 0.25rem 0;
}

.user-role {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.rating {
    display: flex;
    gap: 0.25rem;
}

.rating i {
    font-size: 0.9rem;
    color: var(--warning);
}

.testimonial-content p {
    color: var(--text);
    line-height: 1.6;
    font-style: italic;
    margin: 0;
}

.community-links {
    text-align: center;
}

.community-links h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.community-links p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.community-channels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.community-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 12px;
    border: 1px solid var(--border);
    text-decoration: none;
    transition: all 0.3s;
}

.community-link:hover {
    border-color: var(--primary);
    background: var(--background-alt);
}

.community-link i {
    font-size: 2rem;
    color: var(--primary);
}

.link-content {
    text-align: center;
}

.link-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 0 0 0.25rem 0;
}

.link-content p {
    font-size: 0.8rem;
    color: var(--text-light);
    margin: 0;
}

/* 页脚 */
.footer {
    background: var(--secondary);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo .logo-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.footer-logo .logo-text {
    color: var(--white);
    font-size: 1.5rem;
}

.footer-logo .logo-highlight {
    color: var(--primary-light);
}

.footer-logo .logo-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    max-width: 400px;
}

.footer-stats {
    display: flex;
    gap: 2rem;
}

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

.footer-stat .stat-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-light);
    line-height: 1;
}

.footer-stat .stat-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.25rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin: 0 0 1rem 0;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-column li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-column li a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-copyright p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.footer-copyright a {
    color: var(--primary-light);
    text-decoration: none;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s;
}

.social-link:hover {
    background: var(--primary);
    color: var(--white);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-title {
        font-size: 3rem;
    }

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

    .card-featured {
        grid-column: span 2;
    }

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

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

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

    .download-options {
        grid-template-columns: 1fr;
    }

    .advanced-tutorials {
        grid-template-columns: 1fr;
    }

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

    .testimonial-card.featured {
        grid-column: span 2;
    }

    .footer-main {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        border-top: 1px solid var(--border);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-actions {
        display: none;
    }

    .hero {
        padding: 2rem 0 3rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

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

    .card-featured {
        grid-column: span 1;
        grid-row: span 1;
    }

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

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

    .testimonial-card.featured {
        grid-column: span 1;
    }

    .community-channels {
        grid-template-columns: 1fr;
    }

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

    .tutorial-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-stats {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

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

    .tutorial-navigation {
        flex-direction: column;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .step-content {
        padding: 1.5rem;
    }
}