/* ========================================
   中本聪品牌 - 主样式表
   ======================================== */

/* CSS 变量 */
:root {
    --primary: #F7931A;
    --primary-dark: #E67E00;
    --primary-light: #FFB347;
    --secondary: #1A1A2E;
    --secondary-light: #16213E;
    --secondary-dark: #0F3460;
    --accent: #E94560;
    
    --text-primary: #1A1A2E;
    --text-secondary: #333333;
    --text-muted: #666666;
    --text-light: #999999;
    --text-white: #ffffff;
    
    --bg-primary: #ffffff;
    --bg-secondary: #F8F9FA;
    --bg-dark: #1A1A2E;
    --bg-gradient: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
    
    --border-color: #e5e5e5;
    --border-light: #f0f0f0;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-orange: 0 4px 20px rgba(247,147,26,0.3);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   导航栏
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(247,147,26,0.08);
}

.nav-links a.active {
    color: var(--primary);
    background: rgba(247,147,26,0.1);
    font-weight: 600;
}

/* 汉堡菜单 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--secondary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Hero 区域
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--bg-gradient);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(247,147,26,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(233,69,96,0.05) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(15,52,96,0.2) 0%, transparent 50%);
}

.hero-content {
    text-align: center;
    padding: 60px 0;
}

.hero-logo-container {
    margin-bottom: 32px;
    display: flex;
    justify-content: center;
}

.hero-logo {
    width: 240px;
    height: auto;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.75);
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    font-weight: 400;
}

/* ========================================
   按钮
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-main);
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-white);
    box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(247,147,26,0.4);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: var(--text-white);
    border: 1.5px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ========================================
   通用区块
   ======================================== */

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(247,147,26,0.1);
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ========================================
   核心理念
   ======================================== */

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

.principle-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

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

.principle-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.principle-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.principle-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========================================
   时间线
   ======================================== */

.timeline-section {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2.5px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -32px;
    top: 4px;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
    box-shadow: 0 0 0 3px var(--primary);
}

.timeline-content {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.timeline-date {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(247,147,26,0.1);
    border-radius: 20px;
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========================================
   名言区块
   ======================================== */

.quote-section {
    background: var(--bg-gradient);
    padding: 80px 0;
}

.quote-card {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: 48px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255,255,255,0.1);
}

.quote-icon {
    margin-bottom: 24px;
    opacity: 0.8;
}

.quote-card blockquote {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-white);
    line-height: 1.6;
    font-style: italic;
    margin-bottom: 20px;
}

.quote-card cite {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    font-style: normal;
}

/* ========================================
   关于页 - 品牌故事
   ======================================== */

.page-header {
    padding: 120px 0 60px;
    background: var(--bg-gradient);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 12px;
}

.page-header p {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
}

.story-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.story-text h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.story-text p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.story-image {
    text-align: center;
}

.story-image svg {
    max-width: 100%;
    height: auto;
}

/* 统计 */
.stats-section {
    background: var(--bg-secondary);
}

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

.stat-card {
    text-align: center;
    padding: 32px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.stat-card .stat-number {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary);
    display: block;
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ========================================
   愿景页
   ======================================== */

.vision-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.vision-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
}

.vision-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.vision-icon {
    margin-bottom: 20px;
}

.vision-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.vision-card > p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.vision-list {
    padding: 0;
}

.vision-list li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.vision-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.vision-list li:last-child {
    border-bottom: none;
}

/* 白皮书摘要 */
.whitepaper-section {
    background: var(--bg-secondary);
}

.whitepaper-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: 48px;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.whitepaper-card h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.whitepaper-subtitle {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 36px;
}

.whitepaper-points {
    text-align: left;
    margin-bottom: 36px;
}

.point {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.point:last-child {
    margin-bottom: 0;
}

.point-number {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
    width: 28px;
}

.point p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   联系页
   ======================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.contact-method:hover {
    background: rgba(247,147,26,0.05);
}

.method-icon {
    flex-shrink: 0;
}

.contact-method h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 2px;
}

.contact-method p {
    font-size: 13px;
    color: var(--text-muted);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: var(--transition);
}

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

/* 联系表单 */
.contact-form-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}

.contact-form-container h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--font-main);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(247,147,26,0.15);
    background: var(--bg-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    text-align: center;
    padding: 40px 20px;
}

.form-success h3 {
    font-size: 22px;
    font-weight: 700;
    margin: 16px 0 8px;
    color: #10B981;
}

.form-success p {
    color: var(--text-muted);
}

/* ========================================
   页脚
   ======================================== */

.footer {
    background: var(--secondary);
    color: var(--text-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-logo {
    width: 180px;
    height: auto;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-white);
}

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

.footer-links ul li a {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1024px) {
    .principles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .vision-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        border-bottom: 1px solid var(--border-light);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-links a {
        width: 100%;
        padding: 12px 16px;
        font-size: 16px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .principles-grid {
        grid-template-columns: 1fr;
    }
    
    .vision-grid {
        grid-template-columns: 1fr;
    }
    
    .story-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .hero-logo {
        width: 180px;
    }
    
    .whitepaper-card {
        padding: 32px 20px;
    }
    
    .quote-card {
        padding: 32px 20px;
    }
    
    .quote-card blockquote {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 16px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
    
    .contact-form-container {
        padding: 24px 16px;
    }
}
```

---

由于篇幅限制，我将继续输出剩余的文件。以下是完整的文件清单和部分剩余文件的关键内容：