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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #f5f5f5;
    --accent-color: #d4af37;
    --text-color: #333;
    --text-light: #666;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 移动端基础优化 */
html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

* {
    -webkit-tap-highlight-color: transparent;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    min-height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
    white-space: nowrap;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    letter-spacing: 2px;
    padding: 0 20px;
    word-break: break-word;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 40px;
    font-weight: 300;
    padding: 0 20px;
    line-height: 1.5;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: var(--accent-color);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 2px;
    height: 30px;
    background: var(--primary-color);
    margin: 0 auto;
}

.scroll-indicator span::after {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    transform: rotate(45deg);
    margin-top: 10px;
    margin-left: -3px;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about-text {
    padding: 0 10px;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.underline {
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 0 auto;
}

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

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: center;
    word-break: break-word;
}

/* 服务项目 */
.services {
    padding: 100px 0;
    background: var(--secondary-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.info-item p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--secondary-color);
    width: 100%;
    min-height: 44px;
    touch-action: manipulation;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--white);
}

.contact-form textarea {
    resize: vertical;
}

.submit-button {
    padding: 15px 40px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    align-self: flex-start;
    min-height: 44px;
    min-width: 120px;
    touch-action: manipulation;
}

.submit-button:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 页脚 */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 30px 0;
    text-align: center;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.8rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .navbar .container {
        padding: 12px 15px;
        min-height: 60px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
        gap: 0;
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 18px 0;
        width: 100%;
    }

    .nav-menu a {
        font-size: 1.1rem;
        display: block;
        padding: 5px 0;
    }

    .hamburger {
        display: flex;
        z-index: 1001;
        padding: 5px;
    }

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

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        padding-top: 60px;
        min-height: calc(100vh - 60px);
    }

    .hero-title {
        font-size: 1.8rem;
        letter-spacing: 1px;
        margin-bottom: 15px;
        padding: 0 15px;
    }

    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 30px;
        padding: 0 15px;
    }

    .cta-button {
        padding: 12px 30px;
        font-size: 0.95rem;
    }

    .scroll-indicator {
        bottom: 20px;
    }

    .about {
        padding: 60px 0;
    }

    .about-text {
        padding: 0;
    }

    .about-text p {
        font-size: 1rem;
        padding: 0 10px;
    }

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

    .section-header h2 {
        font-size: 1.8rem;
        padding: 0 15px;
    }

    .services {
        padding: 60px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 40px;
    }

    .service-card {
        padding: 30px 20px;
        min-height: auto;
    }

    .service-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .service-card h3 {
        font-size: 1.3rem;
        margin-bottom: 12px;
    }

    .service-card p {
        font-size: 0.95rem;
    }

    .contact {
        padding: 60px 0;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
        margin-top: 40px;
    }

    .contact-info {
        gap: 25px;
    }

    .info-item h4 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }

    .info-item p {
        font-size: 1rem;
    }

    .contact-form {
        gap: 15px;
    }

    .contact-form input,
    .contact-form textarea {
        padding: 12px;
        font-size: 0.95rem;
    }

    .submit-button {
        padding: 12px 30px;
        font-size: 0.95rem;
        width: 100%;
        align-self: stretch;
    }

    .footer {
        padding: 25px 0;
    }

    .footer p {
        font-size: 0.9rem;
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
        letter-spacing: 0.5px;
    }

    .hero-subtitle {
        font-size: 0.85rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .about-text p {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .service-card {
        padding: 25px 15px;
    }

    .service-card h3 {
        font-size: 1.2rem;
    }

    .service-card p {
        font-size: 0.9rem;
    }

    .info-item h4 {
        font-size: 1rem;
    }

    .info-item p {
        font-size: 0.95rem;
    }
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 1.3rem;
    }

    .logo {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.3rem;
    }
}

/* 横屏优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        height: auto;
        padding: 80px 0 40px;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 20px;
    }

    .scroll-indicator {
        display: none;
    }
}