/* 钱包验证联盟 - 极简主义深化风格样式（蓝色系） */

/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 极简主义深化蓝色系配色 */
    --primary-color: #183f98;
    --secondary-color: #153580;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-light: #999999;
    --background-white: #FFFFFF;
    --background-light: #FAFAFA;
    --border-light: #EEEEEE;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 2px 8px rgba(0, 0, 0, 0.08);

    /* 过渡动画 */
    --transition: all 0.2s ease;

    /* 极简字体 */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
}

/* 全局字体和基础样式 */
body {
    font-family: var(--font-primary);
    line-height: 1.8;
    color: var(--text-primary);
    background-color: var(--background-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 增加段落间距 */
p {
    margin-bottom: 1.5em;
}

.minimal-theme {
    font-size: 16px;
}

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

/* 极简主义深化导航栏 */
.minimal-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: var(--transition);
}

.minimal-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 8px;
}

.logo {
    height: auto;
    width: auto;
    max-height: 24px;
    max-width: 200px;
    display: block;
}

.brand-text {
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.01em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

/* 语言切换器 */
/* 语言切换器 - 下拉菜单 */
.language-dropdown {
    position: relative;
    margin-left: 1.5rem;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    /* 保持极简风格 */
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
    font-family: var(--font-primary);
}

.lang-toggle:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.lang-toggle .current-lang {
    font-weight: 500;
}

.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    box-shadow: var(--shadow-medium);
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    padding: 4px 0;
    z-index: 1000;
}

.language-dropdown:hover .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-item {
    display: block;
    padding: 8px 16px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
    text-align: left;
}

.lang-item:hover {
    color: var(--primary-color);
    background-color: var(--background-light);
}

.lang-item.active {
    color: var(--primary-color);
    font-weight: 600;
    background-color: rgba(24, 63, 152, 0.05);
}

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

.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    color: var(--text-primary);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
    border-radius: 1px;
}

/* 极简主义深化Hero区域 - 网格背景 */
.minimal-hero {
    padding: 150px 0 100px;
    background-color: var(--background-white);
    background-image:
        linear-gradient(to right, rgba(24, 63, 152, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(24, 63, 152, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
    font-family: var(--font-primary);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    line-height: 1.9;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 5rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    padding: 0;
    background: transparent;
    border: none;
    min-width: auto;
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    font-family: var(--font-primary);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 极简主义深化按钮 */
.btn-primary,
.btn-secondary {
    padding: 14px 40px;
    border-radius: 0;
    font-size: 0.95rem;
    font-weight: 400;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    min-width: 160px;
    display: inline-block;
    font-family: var(--font-primary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

.btn-primary:focus {
    outline: 1px solid var(--primary-color);
    outline-offset: 2px;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--border-light);
}

.btn-secondary:focus {
    outline: 1px solid var(--primary-color);
    outline-offset: 2px;
}

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

/* 极简section通用样式 */
.minimal-section {
    padding: 140px 0;
    background-color: var(--background-white);
}

.minimal-section:nth-child(even) {
    background-color: var(--background-light);
}

/* 联盟成员部分 - 缩小高度 */
#members.minimal-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.section-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.9;
    font-weight: 300;
}

/* 关于联盟内容 */
.about-content {
    margin-bottom: 5rem;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.about-card {
    background-color: transparent;
    border: none;
    padding: 0;
    text-align: center;
    transition: var(--transition);
}



.about-card .feature-icon {
    width: auto;
    height: 48px;
    margin: 0 auto 1rem auto;
    display: block;
    object-fit: contain;
}

.about-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    letter-spacing: -0.01em;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.75;
    font-size: 1rem;
    font-weight: 400;
}

/* 特色功能 */
.features-section,
.workflow-section {
    margin-top: 6rem;
}

.features-section h3,
.workflow-section h3 {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 4rem;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.feature-card {
    background-color: transparent;
    border: none;
    padding: 0;
    text-align: center;
    transition: var(--transition);
}

.feature-card:focus {
    outline: 1px solid var(--primary-color);
    outline-offset: 2px;
}



.feature-icon {
    width: auto;
    height: 48px;
    margin: 0 auto 1rem auto;
    display: block;
    object-fit: contain;
}

.feature-card h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
    font-weight: 400;
}

/* 工作流程 */
.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.workflow-step {
    display: flex;
    align-items: flex-start;
    gap: 3rem;
    padding: 0;
    background-color: transparent;
    border: none;
    border-left: 1px solid var(--border-light);
    transition: var(--transition);
    padding-left: 3rem;
}

.workflow-step:hover {
    border-left-color: var(--text-primary);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 300;
    font-family: var(--font-primary);
    margin-top: 2px;
}

.step-content {
    flex: 1;
}

.step-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
}

.step-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.75;
    font-weight: 400;
}

/* 滚动行为 */
html {
    scroll-behavior: smooth;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

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

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
    }

    .nav-menu {
        display: none;
    }

    .language-switcher {
        order: 2;
        margin-left: auto;
        margin-right: 1rem;
    }

    .nav-toggle {
        display: flex;
        order: 3;
    }

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

    .features-grid,
    .about-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .minimal-hero {
        padding: 100px 0 60px;
    }

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

    .about-card,
    .feature-card,
    .workflow-step {
        padding: 1.5rem;
    }
}

/* 极简Footer */
.minimal-footer {
    background-color: var(--background-light);
    border-top: 1px solid var(--border-light);
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.brand-description {
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 300px;
}

.footer-links h4,
.footer-social h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    color: var(--primary-color);
}

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

.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    color: var(--primary-color);
}

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

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.5rem;
    color: var(--text-secondary);
}

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

/* 数据来源区域 */
.data-sources-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.data-source-card {
    background: var(--background-light);
    padding: 3rem 2rem;
    text-align: center;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    transition: var(--transition);
}

.data-source-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.data-source-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.data-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.data-source-card:hover .data-icon {
    transform: scale(1.1);
    color: var(--secondary-color);
}

@media (max-width: 600px) {
    .data-sources-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* 工作流程 - 独立区块适配 */
#workflow.minimal-section {
    background: var(--background);
    /* 确保背景色交替，About(Light) -> Data(White-Ish?) -> Workflow(Light?) */
}

/* Data Sources uses default white/light, let's check. 
   minimal-section usually has consistent bg. 
   Let's just ensure alternating. 
   Home: White
   About: White/Light
   Data Sources: White
   Workflow: Should be Light/Alt
*/

#workflow .workflow-steps {
    margin-top: 3rem;
}


.contact-note {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 1rem;
    line-height: 1.5;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
}