:root {
    --primary-color: #9A7BD8;
    --secondary-color: #FF8C41;
    --accent-color: #FF5A89;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-white: #ffffff;
    --bg-light: #fafafa;
}

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

body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
}

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

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(154, 123, 216, 0.3);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
    font-weight: 500;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero .tagline {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    opacity: 0.95;
    font-weight: 500;
}

.hero .subtitle {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-white);
    color: var(--primary-color);
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.3);
    background: #f8f9fa;
}

/* Brand Philosophy Section */
.philosophy {
    padding: 5rem 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 4rem;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.philosophy-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(154, 123, 216, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.philosophy-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(154, 123, 216, 0.2);
    border-color: var(--primary-color);
}

.philosophy-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.philosophy-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.philosophy-card p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1rem;
}

/* Mission Section */
.mission {
    padding: 5rem 0;
    background: var(--bg-white);
}

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

.mission-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.mission-item {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(154, 123, 216, 0.05) 100%);
    padding: 2rem;
    border-radius: 15px;
    border-left: 4px solid var(--secondary-color);
    text-align: left;
}

.mission-item h4 {
    color: var(--text-dark);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.mission-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Core Values Section */
.values {
    padding: 5rem 0;
    background: linear-gradient(135deg, rgba(154, 123, 216, 0.05) 0%, rgba(255, 90, 137, 0.05) 100%);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.value-item h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.value-item .english {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.value-item p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* App Screenshots */
.screenshots {
    padding: 5rem 0;
    background: var(--bg-light);
    text-align: center;
}

.screenshots-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
    overflow-x: auto;
    padding: 1rem 0;
}

.screenshot {
    flex-shrink: 0;
    width: 250px;
    height: 100%;
    border-radius: 25px;
    box-shadow: 0 15px 40px rgba(154, 123, 216, 0.3);
    transition: transform 0.3s ease;
    object-fit: cover;
}

.screenshot:hover {
    transform: scale(1.05);
}

/* Download Section */
.download {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    text-align: center;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.download p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-white);
    color: var(--text-dark);
    padding: 1rem 2rem;
    border-radius: 15px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 600;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.footer-section p, .footer-section a {
    color: #ccc;
    text-decoration: none;
    line-height: 1.8;
    margin-bottom: 0.5rem;
    display: block;
}

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

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 2rem;
    text-align: center;
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .tagline {
        font-size: 1.1rem;
    }
    
    .hero .subtitle {
        font-size: 0.95rem;
        margin-bottom: 2rem;
    }
    
    .cta-button {
        padding: 0.9rem 1.8rem;
        font-size: 1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2.5rem;
    }
    
    .philosophy-grid,
    .mission-list,
    .values-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .philosophy-card {
        padding: 1.8rem;
    }
    
    .philosophy-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .philosophy-card h3 {
        font-size: 1.3rem;
    }
    
    .mission-item {
        padding: 1.5rem;
    }
    
    .value-item {
        padding: 1.5rem;
    }
    
    .value-icon {
        font-size: 2rem;
    }
    
    .screenshots-container {
        justify-content: flex-start;
        padding: 0.5rem 0;
        gap: 1rem;
    }
    
    .screenshot {
        width: 180px;
        height: 360px;
    }
    
    .download h2 {
        font-size: 1.8rem;
    }
    
    .download p {
        font-size: 1rem;
    }
    
    .download-btn {
        padding: 0.8rem 1.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .philosophy, .mission, .values, .screenshots, .download {
        padding: 3rem 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* 添加更小屏幕的媒体查询 */
@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero .tagline {
        font-size: 1rem;
    }
    
    .hero .subtitle {
        font-size: 0.9rem;
    }
    
    .cta-button {
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
        margin-bottom: 2rem;
    }
    
    .philosophy-grid,
    .mission-list,
    .values-grid {
        gap: 1.2rem;
    }
    
    .philosophy-card {
        padding: 1.5rem;
    }
    
    .philosophy-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .screenshot {
        width: 150px;
        height: 300px;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* Floating elements */
.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.features {
    background-color: var(--bg-white);
    padding: 5rem 0;
}

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

.feature-item {
    background-color: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.social-share {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.social-share p {
    margin: 0;
}

.social-share a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
}

.social-share a:hover {
    transform: translateY(-3px);
    background-color: var(--secondary-color);
}

.social-share svg {
    fill: white;
    width: 18px;
    height: 18px;
}