/* ====================
   导航栏样式
   ==================== */

.main-navigation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.8);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-base);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.logo-icon {
    font-family: var(--font-code);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    padding: 6px 10px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 14px;
    line-height: 1.2;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.logo-image {
    height: 44px;
    width: auto;
    max-height: 44px;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-light);
    padding: 10px 18px;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    text-decoration: none;
    display: inline-block;
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: rgba(16, 185, 129, 0.08);
}

.nav-link.active {
    color: var(--color-primary);
    background-color: rgba(16, 185, 129, 0.1);
    font-weight: 600;
}

.nav-link.active::after {
    display: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--text-2xl);
    cursor: pointer;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        border-bottom: 1px solid var(--color-gray-200);
        box-shadow: var(--shadow-lg);
    }

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

    .nav-toggle {
        display: block;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px var(--spacing-md);
    }
}

/* ====================
   英雄区样式
   ==================== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 70px;
}

.hero-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--spacing-lg);
    text-align: center;
    color: var(--color-white);
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-2xl);
    color: rgba(255, 255, 255, 0.95);
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
    letter-spacing: -0.03em;
}

.hero-title-gradient {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-top: 8px;
}

.hero-subtitle {
    font-size: var(--text-xl);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: var(--spacing-2xl);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

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

.hero-stat-num {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
}

.hero-stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-top: 4px;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.hero-image-wrap {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
}

.hero-image-glow {
    position: absolute;
    top: -10%;
    left: -5%;
    right: -5%;
    bottom: -10%;
    background: radial-gradient(ellipse at center, rgba(16, 185, 129, 0.4) 0%, transparent 70%);
    filter: blur(40px);
    z-index: -1;
}

.hero-img {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* ====================
   Section Tag
   ==================== */

.section-tag {
    display: inline-flex;
    align-items: center;
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-primary);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

/* ====================
   功能卡片网格
   ==================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.card-feature-icon-wrap {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(6, 182, 212, 0.15));
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.card-feature:hover .card-feature-icon-wrap {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    transform: scale(1.05);
}

.card-feature-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.card-feature-description {
    font-size: var(--text-base);
    color: var(--color-gray-dark);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ====================
   版本卡片
   ==================== */

.version-hero-card {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-200);
}

@media (max-width: 900px) {
    .version-hero-card {
        grid-template-columns: 1fr;
        padding: var(--spacing-2xl);
    }
}

.version-badge-wrap {
    margin-bottom: var(--spacing-md);
}

.version-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
}

.version-tag.stable {
    background: #dcfce7;
    color: #166534;
}

.version-tag.beta {
    background: #fef3c7;
    color: #92400e;
}

.version-tag.nightly {
    background: #fee2e2;
    color: #991b1b;
}

.version-hero-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.version-hero-meta {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.version-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-gray-dark);
    font-size: var(--text-sm);
}

.version-meta-item svg {
    color: var(--color-gray);
}

.version-hero-changelog h4 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.changelog-list {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-xl);
}

.changelog-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 6px 0;
    color: var(--color-text-light);
    font-size: var(--text-base);
}

.changelog-dot {
    width: 6px;
    height: 6px;
    background: var(--color-primary-light);
    border-radius: 50%;
    margin-top: 9px;
    flex-shrink: 0;
}

.version-hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.version-feature-badge {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.version-feature-badge:hover {
    background: var(--color-gray-100);
    transform: translateX(4px);
}

.feature-badge-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: var(--radius-md);
    font-size: 22px;
    box-shadow: var(--shadow-sm);
}

.feature-badge-text strong {
    display: block;
    color: var(--color-text);
    font-weight: 600;
    margin-bottom: 2px;
}

.feature-badge-text span {
    font-size: var(--text-sm);
    color: var(--color-gray-dark);
}

/* ====================
   性能数据卡片
   ==================== */

.perf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
}

.perf-card {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

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

.perf-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.03em;
}

.perf-unit {
    font-size: 1.25rem;
    font-weight: 600;
    margin-left: 2px;
}

.perf-label {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.perf-desc {
    font-size: var(--text-sm);
    color: var(--color-gray-dark);
    margin-bottom: 0;
}

/* ====================
   用户评价卡片
   ==================== */

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: transparent;
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

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

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    font-weight: 700;
    font-size: var(--text-lg);
    border-radius: 50%;
}

.author-info strong {
    display: block;
    color: var(--color-text);
    font-weight: 600;
}

.author-info span {
    font-size: var(--text-sm);
    color: var(--color-gray-dark);
}

/* ====================
   步骤样式
   ==================== */

.steps-list {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-lg);
    position: relative;
}

.step-item {
    flex: 1;
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    z-index: 1;
}

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

.step-number-wrap {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.step-number {
    font-size: var(--text-2xl);
    font-weight: 800;
}

.step-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.step-description {
    font-size: var(--text-base);
    color: var(--color-gray-dark);
    line-height: 1.7;
}

.step-line {
    display: none;
}

@media (min-width: 900px) {
    .step-line {
        display: block;
        flex: 0 0 40px;
        height: 2px;
        background: linear-gradient(90deg, var(--color-primary-lighter), var(--color-gray-200));
        margin-top: 60px;
    }
}

@media (max-width: 768px) {
    .steps-list {
        flex-direction: column;
    }
}

/* ====================
   CTA 区域
   ==================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: var(--spacing-4xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(110, 231, 183, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-2xl);
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.cta-title .cta-subtitle {
    display: block;
    font-size: var(--text-xl);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 6px;
}

.cta-desc {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
    font-size: var(--text-base);
}

.cta-right {
    flex-shrink: 0;
    text-align: right;
}

@media (max-width: 768px) {
    .cta-content {
        flex-direction: column;
        text-align: center;
    }

    .cta-right {
        text-align: center;
    }
}

/* ====================
   页脚样式
   ==================== */

.site-footer {
    background-color: #111827;
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-xl);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section {
    min-width: 0;
}

.footer-title {
    color: var(--color-white);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-description {
    color: var(--color-gray);
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    color: var(--color-gray-300);
    transition: all var(--transition-base);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.social-icon {
    width: 20px;
    height: 20px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-primary-lighter);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    color: var(--color-gray);
    font-size: var(--text-sm);
    margin-bottom: 0;
}

.footer-note {
    color: var(--color-gray);
    font-size: var(--text-sm);
    margin-bottom: 0;
}

@media (max-width: 900px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .footer-content {
        grid-template-columns: 1fr;
    }

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

/* ====================
   下载按钮
   ==================== */

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
    color: white;
}

.download-btn-small {
    padding: 8px 16px;
    font-size: var(--text-sm);
}

/* ====================
   版本标签
   ==================== */

.version-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.version-card:hover {
    border-color: var(--color-primary-lighter);
    box-shadow: var(--shadow-md);
}

.version-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.version-card-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
}

.version-card-date {
    color: var(--color-gray);
    font-size: var(--text-sm);
}

/* ====================
   下载卡片样式
   ==================== */

.download-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.download-card-header {
    padding: var(--spacing-xl) var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(5, 150, 105, 0.03));
    border-bottom: 1px solid var(--color-gray-200);
}

.download-card-title {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.download-card-meta {
    font-size: var(--text-sm);
    color: var(--color-gray-dark);
    margin-bottom: 0;
}

.download-links-section {
    padding: var(--spacing-xl) var(--spacing-2xl);
}

.download-links-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.download-buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.download-card-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(5, 150, 105, 0.06));
    border: 2px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-xl);
    text-decoration: none;
    transition: all var(--transition-base);
}

.download-card-btn:hover {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(5, 150, 105, 0.1));
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-btn-icon {
    font-size: 22px;
    flex-shrink: 0;
}

.download-btn-name {
    font-weight: 600;
    color: var(--color-text);
    flex: 1;
}

.download-btn-size {
    font-size: var(--text-sm);
    color: var(--color-gray-dark);
    background: rgba(0, 0, 0, 0.05);
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

.download-btn-arrow {
    font-size: var(--text-xl);
    color: var(--color-primary-light);
    transition: transform var(--transition-base);
}

.download-card-btn:hover .download-btn-arrow {
    transform: translateX(4px);
}

.download-changelog {
    padding: var(--spacing-xl) var(--spacing-2xl);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

.download-changelog-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

/* ====================
   通用辅助类
   ==================== */

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

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-lg { margin-top: var(--spacing-lg) !important; }
.mb-lg { margin-bottom: var(--spacing-lg) !important; }