:root {
    --main-color: #FF5500;
    --main-color-light: #FF7B2A;
    --main-color-dark: #D94300;
    --main-gradient: linear-gradient(135deg, #FF5500 0%, #FF8C42 100%);
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.site-logo {
    height: 44px;
    width: auto;
    display: block;
}

.nav-logo h2 {
    color: var(--main-color-dark);
    font-weight: 700;
    font-size: 24px;
    background: var(--main-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--main-color-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--main-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--main-gradient);
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--main-color-dark);
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页英雄区域 */
.hero {
    min-height: 100vh;
    background: var(--main-gradient);
    display: flex;
    align-items: 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="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: white;
    color: var(--main-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--main-color);
    transform: translateY(-3px);
}

.hero-visual {
    position: relative;
    height: 500px;
    width: 520px;
    margin: 0 auto;
}

.floating-card {
    position: absolute;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 24px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #333;
    animation: float 6s ease-in-out infinite;
    border: 1.5px solid #F2F2F2;
    box-shadow: 0 6px 32px 0 rgba(255,85,0,0.10), 0 1.5px 8px 0 rgba(0,0,0,0.08);
    min-width: 110px;
    min-height: 90px;
    font-size: 1.1rem;
    transition: box-shadow 0.3s, background 0.3s, color 0.3s, border 0.3s;
}

.floating-card i {
    color: var(--main-color);
    font-size: 2.1rem;
    margin-bottom: 6px;
    text-shadow: 0 2px 8px rgba(255,85,0,0.10);
}

.floating-card span {
    font-weight: 700;
    color: #222;
    letter-spacing: 1px;
    font-size: 1.08rem;
}

.floating-card:hover {
    background: #fff;
    border: 1.5px solid var(--main-color);
    box-shadow: 0 12px 40px 0 rgba(255,85,0,0.18), 0 2px 12px 0 rgba(0,0,0,0.10);
    color: var(--main-color);
}

.card-1 {
    top: 8%;
    left: 5%;
    animation-delay: 0s;
}

.card-2 {
    top: 18%;
    right: 5%;
    animation-delay: 1.5s;
}

.card-3 {
    bottom: 22%;
    left: 18%;
    animation-delay: 3s;
}

.card-4 {
    bottom: 8%;
    right: 12%;
    animation-delay: 4.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    text-align: center;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--main-color-dark);
    margin-bottom: 20px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--main-gradient);
}

.section-subtitle {
    font-size: 1.1rem;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-item {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.about-icon {
    width: 60px;
    height: 60px;
    background: var(--main-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.about-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--main-color-dark);
    margin-bottom: 10px;
}

.about-info p {
    color: #7f8c8d;
    line-height: 1.6;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    min-width: 180px;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--main-color);
    margin-bottom: 10px;
    white-space: nowrap;
}

.stat-label {
    color: #7f8c8d;
    font-weight: 500;
}

/* 业务介绍 */
.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.business-card {
    background: white;
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f1f3f4;
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--main-gradient);
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.business-icon {
    width: 90px;
    height: 90px;
    background: var(--main-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2.2rem;
    position: relative;
    z-index: 1;
}

.business-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--main-color-dark);
    margin-bottom: 20px;
    background: var(--main-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.business-card p {
    color: #7f8c8d;
    margin-bottom: 25px;
    line-height: 1.7;
    font-size: 1rem;
}

.business-features {
    list-style: none;
    text-align: left;
}

.business-features li {
    padding: 10px 0;
    color: #7f8c8d;
    position: relative;
    padding-left: 25px;
    font-weight: 500;
}

.business-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--main-color);
    font-weight: bold;
    font-size: 1.1rem;
}

/* 成功案例 */
.cases {
    background: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.case-image {
    height: 200px;
    background: var(--main-gradient);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-overlay {
    color: white;
    font-size: 3rem;
    opacity: 0.8;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.case-content p {
    color: #7f8c8d;
    margin-bottom: 20px;
    line-height: 1.6;
}

.case-stats {
    display: flex;
    gap: 20px;
    color: var(--main-color);
    font-weight: 500;
}

.case-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 团队优势 */
.advantages-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.advantage-item {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.advantage-number {
    width: 60px;
    height: 60px;
    background: var(--main-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.advantage-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--main-color-dark);
    margin-bottom: 10px;
}

.advantage-info p {
    color: #7f8c8d;
    line-height: 1.6;
}

.advantages-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.advantage-circle {
    position: relative;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--main-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
}

.circle-item {
    position: absolute;
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transform: rotate(var(--angle)) translateX(120px) rotate(calc(-1 * var(--angle)));
}

.circle-item i {
    color: var(--main-color);
    font-size: 1.5rem;
}

.circle-item span {
    font-size: 0.8rem;
    color: var(--main-color-dark);
    font-weight: 500;
    text-align: center;
}

/* 联系我们 */
.contact {
    background: #f8f9fa;
}

.contact-content {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 0;
}

.contact-info {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px 60px;
    justify-items: center;
    align-items: center;
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

.contact-item {
    min-width: 260px;
    max-width: 320px;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 24px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--main-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--main-color-dark);
    margin-bottom: 5px;
    white-space: nowrap;
}

.contact-details p {
    color: #7f8c8d;
    word-break: keep-all;
    white-space: nowrap;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

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

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

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

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

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--main-color);
}

.footer-section ul li i {
    margin-right: 10px;
    color: var(--main-color);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #bdc3c7;
}

.footer-bottom a {
    color: inherit;
    text-decoration: none;
    font-weight: normal;
    border: none;
}

.footer-bottom a:hover,
.footer-bottom a:active,
.footer-bottom a:visited {
    color: inherit;
    text-decoration: none;
    font-weight: normal;
    border: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

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

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

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about-content,
    .advantages-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .business-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .business-card {
        padding: 40px 30px;
    }

    .cases-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .advantage-circle {
        width: 250px;
        height: 250px;
    }

    .circle-item {
        transform: rotate(var(--angle)) translateX(100px) rotate(calc(-1 * var(--angle)));
        width: 60px;
        height: 60px;
    }

    .circle-item i {
        font-size: 1.2rem;
    }

    .circle-item span {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .contact-form {
        padding: 30px 20px;
    }
}

@media (max-width: 900px) {
    .hero-visual {
        width: 100%;
        height: 320px;
    }
    .floating-card {
        min-width: 90px;
        min-height: 70px;
        font-size: 1rem;
        padding: 16px 18px;
    }
    .card-1, .card-2, .card-3, .card-4 {
        top: auto;
        bottom: auto;
        left: auto;
        right: auto;
        position: static;
        margin: 10px;
        animation-delay: 0s;
    }
    .hero-visual {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: 10px;
    }
    .contact-content {
        flex-direction: column;
        padding: 20px 0;
    }
    .contact-info {
        max-width: 100%;
        padding: 0 10px;
    }
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        max-width: 100%;
    }
    .contact-item {
        min-width: 0;
        max-width: 100%;
        gap: 16px;
    }
    .contact-details p {
        white-space: normal;
    }
}

@media (max-width: 700px) {
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .site-logo {
        height: 32px;
    }
    .nav-logo {
        gap: 8px;
    }
    .business-card h3 {
        background: var(--main-gradient);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}

/* 其他主色相关 */
::-webkit-scrollbar-thumb {
    background: var(--main-gradient);
}