/* Root Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #0f172a;
    --accent-color: #f59e0b;
    --accent-light: #fbbf24;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --bg-card: rgba(255, 255, 255, 0.95);
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 16px;
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 0.75rem;
}

p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-primary.large {
    padding: 20px 40px;
    font-size: 1.25rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.nav-brand i {
    color: var(--primary-color);
    font-size: 1.75rem;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: url(../images/bgc.png) no-repeat center center;
    background-size: cover;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect fill="url(%23grid)" width="100%" height="100%"/></svg>');
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.2);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: center;
    padding: 120px 0 60px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 12px 20px;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    color: white;
    margin-bottom: 24px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 40px;
}

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

.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

.hero-cta {
    text-align: left;
}

.cta-note {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-top: 12px;
    margin-bottom: 0;
}

/* Profile Card */
.profile-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-align: center;
}

.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 3rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.profile-info h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.profile-info p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1rem;
}

.profile-badges {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.badge {
    background: var(--gradient-accent);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-section {
    background: var(--bg-secondary);
}

.content-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.content-row:last-child {
    margin-bottom: 0;
}

.content-row.reverse {
    direction: rtl;
}

.content-row.reverse > * {
    direction: ltr;
}

.content-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 300px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.image-placeholder i {
    font-size: 3rem;
    margin-bottom: 16px;
}

.image-placeholder p {
    color: white;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.content-text h3 {
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    margin-top: 24px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.feature-list i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    margin-bottom: 16px;
    font-size: 1.375rem;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials-section {
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.testimonial-content {
    margin-bottom: 24px;
}

.testimonial-content p {
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-primary);
    position: relative;
}

.testimonial-content p::before {
    content: '"';
    font-size: 4rem;
    color: var(--primary-color);
    position: absolute;
    top: -20px;
    left: -20px;
    font-family: serif;
    opacity: 0.3;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.author-info h4 {
    margin-bottom: 4px;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.author-info p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* Community Section */
.community-section {
    background: var(--bg-dark);
    color: white;
}

.community-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.community-content h2 {
    color: white;
    margin-bottom: 24px;
}

.community-content > p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.25rem;
    margin-bottom: 60px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.benefit-item {
    text-align: center;
}

.benefit-item i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.benefit-item h3 {
    color: white;
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.benefit-item p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

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

.cta-subtitle {
    color: rgba(255, 255, 255, 0.8);
    margin-top: 16px;
    font-size: 1rem;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 20px;
}

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

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

/* Fixed CTA Button */
.fixed-cta {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
}

.btn-fixed {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
    white-space: nowrap;
}

.btn-fixed:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.btn-fixed i {
    font-size: 1.25rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
    }

    /* 移动端Hero优化 - 去掉导航栏后可以更紧凑 */
    .hero {
        min-height: 80vh; /* 减少高度 */
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 30px; /* 减少间距 */
        text-align: center;
        padding: 40px 0 30px; /* 大幅减少padding */
    }

    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        margin-bottom: 30px; /* 减少底部间距 */
    }

    .stat-number {
        font-size: 2rem;
    }

    /* Profile card 移动端优化 */
    .profile-card {

        max-width: 280px;
        margin: 0 auto;
    }

    .content-row {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .content-row.reverse {
        direction: ltr;
    }

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

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    /* Fixed按钮移动端优化 - 完整显示文字 */
    .fixed-cta {
        opacity: 1 !important; /* 移动端始终可见 */
        pointer-events: auto !important;
    }

    .btn-fixed {
        padding: 14px 20px;
        font-size: 0.9rem;
        border-radius: 25px;
        bottom: 20px;
        max-width: calc(100vw - 32px);
        white-space: nowrap;
    }

    .btn-fixed .btn-text {
        display: inline; /* 显示文字 */
    }

    .btn-fixed i {
        font-size: 1.1rem;
    }

    section {
        padding: 50px 0; /* 减少section间距 */
    }

    .section-header {
        margin-bottom: 40px;
    }

    /* 移动端特定的hero样式调整 */
    .hero-badge {
        font-size: 0.85rem;
        padding: 10px 16px;
        margin-bottom: 20px;
    }

    .hero-description {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }

    .hero-cta {
        margin-top: 20px;
    }

    .cta-note {
        font-size: 0.85rem;
        margin-top: 10px;
    }
}

@media (max-width: 480px) {
    /* 超小屏幕进一步优化 */
    .hero {
        min-height: 70vh; /* 进一步减少高度 */
    }

    .hero-content {
        padding: 30px 0 20px; /* 更紧凑的padding */
        gap: 20px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 25px;
    }

    .stat-number {
        font-size: 1.8rem; /* 稍微减小字体 */
    }

    .stat-label {
        font-size: 0.85rem;
    }

    .profile-card {

        max-width: 260px;
    }

    .hero-title {
        font-size: 2rem; /* 减小标题字体 */
        margin-bottom: 16px;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .btn-primary {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .service-card,
    .testimonial-card {
        padding: 24px;
    }

    .image-placeholder {
        width: 250px;
        height: 160px;
    }

    /* 进一步减少section间距 */
    section {
        padding: 40px 0;
    }

    .section-header {
        margin-bottom: 30px;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    /* Fixed按钮小屏幕优化 */
    .btn-fixed {
        padding: 12px 18px;
        font-size: 0.85rem;
        bottom: 15px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling for internal links */
html {
    scroll-padding-top: 80px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}