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

body {
    font-family: 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', Helvetica Neue, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
    color: #000;
    background: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid #000;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

/* === 新增 LOGO 区域样式 === */
.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-texts {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 2px;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 10px;
    color: #666;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: #000;
    font-weight: 400;
    font-size: 14px;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.nav-link:hover {
    opacity: 0.5;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
    background: #000;
    color: #fff;
}

.hero-carousel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.carousel-btn.prev {
    left: 30px;
}

.carousel-btn.next {
    right: 30px;
}

.carousel-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    transform: scale(1.2);
}

.hero-content {
    position: relative;
    z-index: 5;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 40px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-title {
    font-size: 72px;
    font-weight: 600;
    margin-bottom: 30px;
    letter-spacing: -2px;
}

.hero-slogan {
    font-size: 72px;
    font-weight: 600;
    margin-bottom: 30px;
    letter-spacing: -2px;
    opacity: 1;
    white-space: nowrap;
}

.hero-description {
    font-size: 24px;
    line-height: 1.8;
    opacity: 0.8;
}

/* Sections */
section {
    padding: 120px 0;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 16px;
    text-align: center;
    color: #666;
    margin-bottom: 80px;
    margin-top: -40px;
}

/* About Section */
.about-section {
    background: #fff;
}

.about-content {
    max-width: 800px;
    margin: 0 auto 80px;
}

.about-text p {
    font-size: 16px;
    line-height: 2;
    color: #333;
    margin-bottom: 20px;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.philosophy-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
}

.philosophy-item p {
    font-size: 14px;
    line-height: 1.8;
    color: #666;
    text-align: center;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.value-item {
    text-align: center;
    padding: 40px 20px;
    border: 1px solid #000;
}

.value-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

.value-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Services Section */
.services-section {
    background: #f5f5f5;
}

.services-list {
    max-width: 800px;
    margin: 0 auto;
}

.service-item {
    display: flex;
    align-items: baseline;
    gap: 30px;
    padding: 30px 0;
    border-bottom: 1px solid #000;
}

.service-number {
    font-size: 14px;
    font-weight: 600;
    color: #666;
    min-width: 30px;
}

.service-item h3 {
    font-size: 24px;
    font-weight: 500;
}

/* Target Section */
.target-section {
    background: #fff;
}

.targets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.target-item h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #000;
}

.needs-list {
    list-style: none;
}

.needs-list li {
    font-size: 15px;
    color: #333;
    padding: 10px 0;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #000;
    color: #fff;
    padding: 60px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left {
    display: flex;
    gap: 60px;
}

.footer-brand h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.6;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-contact p {
    font-size: 14px;
    opacity: 0.6;
}

.footer-right {
    text-align: right;
}

.footer-copyright {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-copyright p {
    font-size: 14px;
    opacity: 0.6;
}

.footer-copyright a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-copyright a:hover {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
    }

    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .nav-list {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        min-height: 600px;
    }

    .hero-slogan {
        font-size: 48px;
    }

    .hero-description {
        font-size: 18px;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .carousel-btn.prev {
        left: 15px;
    }

    .carousel-btn.next {
        right: 15px;
    }

    .philosophy-grid,
    .values-grid,
    .targets-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-left {
        flex-direction: column;
        gap: 30px;
    }

    .footer-right {
        text-align: left;
    }

    section {
        padding: 80px 0;
    }

    .section-title {
        font-size: 24px;
    }
}