/* 全局样式 */
:root {
    --primary-color: #45BCC5;
    --primary-dark: #38a6b0;
    --primary-light: #e6f4f5;
    --secondary-color: #A9CADC;
    --dark-color: #2A3B47;
    --light-color: #FFFFFF;
    --accent-color: #FF6B35;
    --gray-color: #F8F9FA;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 8px;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 14px 28px;
    background-color: var(--primary-color);
    color: var(--light-color);
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(69, 188, 197, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
    z-index: -1;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(69, 188, 197, 0.4);
}

.btn:hover::before {
    left: 100%;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    box-shadow: none;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--light-color);
    box-shadow: 0 8px 25px rgba(69, 188, 197, 0.4);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.3;
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    background: linear-gradient(90deg, var(--dark-color), #4a5568);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 30px;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    position: relative;
    display: inline-block;
    color: var(--light-color);
    background-color: var(--primary-color);
    padding: 8px 20px;
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(69, 188, 197, 0.2);
}

h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 10%;
    width: 80%;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

h3 {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    color: var(--primary-dark);
    position: relative;
    padding-bottom: 10px;
}

h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 1.5px;
}

h4 {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--dark-color);
}

/* 导航栏样式 */
.navbar {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

/* 移动端菜单样式 - 简化并确保优先级 */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        right: 0 !important;
        background-color: white !important;
        max-height: 0 !important;
        overflow: hidden !important;
        transition: max-height 0.5s ease !important;
        z-index: 999 !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .nav-links.active {
        max-height: 500px !important;
    }

    .nav-links ul {
        flex-direction: column !important;
        padding: 20px !important;
        gap: 15px !important;
        margin: 0 !important;
        list-style: none !important;
    }

    .nav-links li {
        width: 100% !important;
    }

    .nav-links a {
        display: block !important;
        padding: 10px 0 !important;
    }

    .hamburger {
        display: block !important;
        z-index: 1000 !important;
        cursor: pointer !important;
        background: none !important;
        border: none !important;
        font-size: 1.8rem !important;
    }
}

/* 桌面端菜单样式 */
@media screen and (min-width: 769px) {
    .nav-links {
        max-height: none !important;
    }
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    background-color: rgba(255, 255, 255, 0.99);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 55px;
    margin-right: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.logo:hover img {
    transform: scale(1.05);
}

.logo span {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.navbar.scrolled .logo span {
    font-size: 1.7rem;
}

.navbar.scrolled .logo img {
    height: 50px;
}

.nav-links ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 40px;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    padding: 8px 0;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

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

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

.navbar.scrolled .nav-links a {
    padding: 6px 0;
}

.hamburger {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--dark-color);
    transition: all 0.3s ease;
    background: none;
    border: none;
}

.hamburger:hover {
    color: var(--primary-color);
    transform: rotate(90deg);
}

/* 英雄区域样式 */
.hero {
    margin-top: 80px;
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--dark-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 40%);
    z-index: 1;
    animation: pulse 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    border-radius: 50%;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 2;
    max-width: 1300px;
    margin: 0 auto;
}

.hero-text {
    flex: 1;
    min-width: 300px;
    margin-bottom: 30px;
    animation: fadeInLeft 1s ease-out;
    padding-right: 30px;
}

.hero-text h1 {
    color: var(--light-color);
    margin-bottom: 30px;
    font-weight: 800;
    text-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    max-width: 500px;
    line-height: 1.7;
}

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

.features {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
    justify-content: center;
}

.hexagon {
    position: relative;
    width: 150px;
    height: 170px;
    background-color: rgba(255, 255, 255, 0.15);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
    backdrop-filter: blur(5px);
    animation: float 6s ease-in-out infinite;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.hexagon:nth-child(1) {
    animation-delay: 0s;
}

.hexagon:nth-child(2) {
    animation-delay: 2s;
}

.hexagon:nth-child(3) {
    animation-delay: 4s;
}

.hexagon:hover {
    transform: translateY(-12px) scale(1.07);
    background-color: rgba(255, 255, 255, 0.25);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.hexagon-inner {
    text-align: center;
    color: var(--light-color);
    padding: 15px;
}

.hexagon-inner h3 {
    color: var(--light-color);
    margin-bottom: 10px;
    font-size: 1.4rem;
    position: relative;
    display: inline-block;
}

.hexagon-inner h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 10%;
    width: 80%;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 1px;
}

.hexagon-inner p {
    font-size: 1.2rem;
    font-weight: 700;
    margin-top: 15px;
    color: rgba(255, 255, 255, 0.95);
}

.hero-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
    animation: fadeInRight 1s ease-out 0.2s both;
    position: relative;
}

.hero-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110%;
    height: 110%;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    z-index: -1;
    animation: pulse 5s ease-in-out infinite;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.18);
    transition: var(--transition);
    border: 10px solid rgba(255, 255, 255, 0.05);
    transform: perspective(1000px) rotateY(5deg);
}

.hero-image img:hover {
    transform: perspective(1000px) rotateY(5deg) scale(1.03);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* 通用部分标题样式 */
.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 22px;
    position: relative;
    justify-content: center;
}

.section-line {
    flex: 1;
    height: 4px;
    background-color: var(--primary-color);
    margin-right: 20px;
    position: relative;
    overflow: hidden;
}

.section-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background-color: var(--accent-color);
    animation: slideLine 3s infinite;
}

.header-logo {
    width: 50px;
    height: 50px;
    background-color: var(--light-color);
    margin-left: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.section-title {
    text-align: center;
    margin-bottom: 22px;
    color: var(--dark-color);
    font-size: 1.8rem;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

/* .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 1.5px;
} */

@keyframes slideLine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(300%);
    }
}

/* 公司概况样式 */
.overview {
    padding: 53px 0;
    background-color: var(--light-color);
    position: relative;
    overflow: hidden;
}

.overview::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: radial-gradient(circle at 70% 30%, rgba(69, 188, 197, 0.05) 0%, transparent 60%);
    z-index: 1;
}

.overview-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.overview-description {
    flex: 1;
    min-width: 300px;
    background-color: var(--primary-light);
    padding: 40px;
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.overview-description:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.overview-description::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background-color: var(--primary-color);
}

.overview-description p {
    color: var(--dark-color);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 15px;
}

.english-text {
    margin-top: 25px;
    font-style: italic;
    color: #666;
    padding-top: 20px;
    border-top: 1px dashed rgba(0, 0, 0, 0.1);
    font-size: 0.95rem;
}

.manual-features {
    flex: 1;
    min-width: 300px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 22px;
}

.feature-item {
    background-color: var(--light-color);
    padding: 0px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 3px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-top: 4px solid var(--primary-color);
}

.feature-item:hover::after {
    width: 100%;
}

.feature-item h4 {
    color: var(--primary-color);
    margin-bottom: 18px;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.feature-item h4::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-right: 12px;
}

.feature-item p {
    color: #555;
    line-height: 1.7;
    font-size: 1rem;
}

/* 核心业务与优势样式 */
.advantages {
    padding: 10px 0;
    background-color: var(--gray-color);
    position: relative;
    overflow: hidden;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 80%, rgba(69, 188, 197, 0.08) 0%, transparent 60%);
    z-index: 1;
    animation: pulseBackground 15s ease-in-out infinite;
}

.advantage-section {
    margin-bottom: 53px;
    position: relative;
    z-index: 2;
}

.advantage-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    align-items: flex-start;
    justify-content: space-between;
}

.advantage-items {
    flex: 1;
    min-width: 300px;
    padding-right: 10px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.advantage-item {
    margin-bottom: 10px;
    background-color: var(--light-color);
    padding: 6px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--primary-color);
}

.advantage-item::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 100%;
    background-color: rgba(69, 188, 197, 0.05);
    transition: var(--transition);
    z-index: 0;
}

.advantage-item:hover {
    transform: translateY(-8px) translateX(5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.advantage-item:hover::after {
    width: 100%;
}

.item-header {
    display: flex;
    align-items: center;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}

.item-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--primary-color);
    margin-right: 18px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(69, 188, 197, 0.3);
}

.item-dot::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--light-color);
    z-index: 1;
}

.item-dot::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: rgba(69, 188, 197, 0.5);
    animation: pulseDot 2s infinite;
    z-index: 0;
}

.item-header h4 {
    margin-bottom: 0;
    white-space: nowrap;
    font-size: 1.3rem;
    color: var(--primary-dark);
    font-weight: 700;
}

.item-line {
    flex: 1;
    height: 2px;
    background-color: #e0e0e0;
    margin-left: 18px;
    position: relative;
    overflow: hidden;
}

.item-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
}

.advantage-item p {
    position: relative;
    z-index: 1;
    color: #555;
    line-height: 1.7;
    font-size: 1.05rem;
}

.advantage-images {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: center;
    position: relative;
    padding: 30px;
}

.advantage-images::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(69, 188, 197, 0.05) 0%, rgba(69, 188, 197, 0.1) 100%);
    border-radius: var(--radius);
    z-index: -1;
}

.advantage-images img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
    border: 5px solid white;
    transform: perspective(1000px) rotateY(1deg);
    object-fit: cover;
    max-height: 350px;
}

.advantage-images img:nth-child(2) {
    transform: perspective(1000px) rotateY(-1deg);
}

.advantage-images img:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

@keyframes pulseBackground {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}

@keyframes pulseDot {
    0%, 100% {
        transform: scale(0.5);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* 几何图形基础样式 */
.square {
    position: relative;
    overflow: hidden;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    transition: var(--transition);
}

.octagon {
    position: relative;
    overflow: hidden;
    clip-path: polygon(25% 0%, 75% 0%, 100% 25%, 100% 75%, 75% 100%, 25% 100%, 0% 75%, 0% 25%);
    transition: var(--transition);
}

.octagon:hover,
.square:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* 三角形排列容器 */
.triangle-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    position: relative;
}

.triangle-top {
    align-self: center;
}

.triangle-bottom {
    display: flex;
    gap: 50px;
}

/* 气体介质解决方案样式 */
.solutions {
    padding: 20px 0;
    background-color: var(--light-color);
    position: relative;
    overflow: hidden;
}

.solutions::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 70%, rgba(69, 188, 197, 0.05) 0%, transparent 60%);
    z-index: 1;
    animation: floatBackground 15s ease-in-out infinite;
}

.solution-row {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 100px;
    align-items: center;
}

/* 气体类型标签样式 */
.gas-type-tag {
    display: inline-block;
    padding: 8px 16px;
    margin: 0 8px 8px 0;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    background-color: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.gas-type-tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(69, 188, 197, 0.3);
}

/* 增强八边形3D效果 */
.octagon-enhanced {
    position: relative;
    background-color: white;
    clip-path: polygon(25% 0%, 75% 0%, 100% 25%, 100% 75%, 75% 100%, 25% 100%, 0% 75%, 0% 25%);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: all 0.5s ease;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.octagon-enhanced::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    background-color: rgba(255, 255, 255, 0.1);
    clip-path: polygon(25% 0%, 75% 0%, 100% 25%, 100% 75%, 75% 100%, 25% 100%, 0% 75%, 0% 25%);
    z-index: 1;
}

.octagon-enhanced:hover {
    transform: translateY(-10px) rotateX(10deg) rotateY(10deg);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.octagon-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: white;
    text-align: center;
    z-index: 2;
}

/* 气体网格容器 */
.gas-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 25px;
    justify-items: center;
}

.gas-grid-item {
    width: 100%;
    max-width: 200px;
}

/* 解决方案网格 */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.solution-card {
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
    transform: translateY(0);
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

/* 应用场景区域 */
.application-scenarios {
    margin-top: 60px;
    padding: 40px;
    background-color: rgba(245, 247, 250, 0.7);
    border-radius: var(--radius);
}

/* 气体特性卡片样式 */
.gas-property-card {
    background-color: white;
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.gas-property-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.gas-property-card h4 {
    margin-top: 0;
    color: var(--primary-dark);
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.gas-property-card p {
    color: #555;
    margin-bottom: 15px;
}

.gas-property-card ul {
    padding-left: 20px;
    margin-bottom: 0;
}

.gas-property-card ul li {
    margin-bottom: 8px;
    position: relative;
}

.gas-property-card ul li::before {
    content: '•';
    color: var(--primary-color);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

/* 边框样式 */
.border-primary {
    border-top: 4px solid var(--primary-color);
}

.border-secondary {
    border-top: 4px solid var(--secondary-color);
}

.border-accent {
    border-top: 4px solid var(--accent-color);
}

/* 浮动动画 */
.floatBackground {
    animation: float 6s ease-in-out infinite;
}
    position: relative;
    z-index: 2;
}

.solution-col {
    flex: 1;
    min-width: 320px;
    background-color: var(--light-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.solution-col::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}

.solution-col:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.solution-images {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
    padding: 25px;
}

.solution-images img {
    max-width: calc(50% - 10px);
    height: 190px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    transform: perspective(1000px) rotateX(3deg);
}

.solution-images img:nth-child(2) {
    transform: perspective(1000px) rotateX(-3deg);
}

.solution-images img:hover {
    transform: perspective(1000px) rotateX(0deg) scale(1.07);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.solution-desc {
    background-color: var(--primary-color);
    padding: 25px;
    margin-bottom: 30px;
    position: relative;
}

.solution-desc::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 25px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--primary-color);
}

.solution-desc p {
    color: var(--light-color);
    margin: 0;
    font-size: 1.15rem;
    line-height: 1.6;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    /* padding: 0 25px 25px; */
}

/* 八边形和四边形图片容器样式 */
.octagon-container {
    position: relative;
    width: 100%;
    padding-bottom: 100%; /* 正方形宽高比 */
    overflow: hidden;
}

.octagon-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.square-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.square-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.square-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.solution-grid img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: none;
    transform: perspective(1000px) rotateY(3deg);
}

.solution-grid img:nth-child(2n) {
    transform: perspective(1000px) rotateY(-3deg);
}

.solution-grid img:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.07);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.solution-large-img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    margin-bottom: 30px;
    border-radius: var(--radius) var(--radius) 0 0;
    border: none;
    transition: var(--transition);
}

/* 特殊几何图形布局 */
.geometric-featured {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin: 40px 0;
    justify-content: center;
}

.geometric-item {
    flex: 1;
    min-width: 280px;
    position: relative;
}

.solution-col:hover .solution-large-img {
    transform: scale(1.03);
}

/* 八边形动画效果 */
@keyframes rotateOctagon {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(5deg) scale(1.05);
    }
}

.octagon-animate {
    animation: rotateOctagon 8s ease-in-out infinite;
}

.solution-params {
    margin-bottom: 30px;
    padding: 0 25px;
}

.param-item {
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    padding-bottom: 6px;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.05);
}

.param-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.param-title {
    font-weight: bold;
    width: 120px;
    flex-shrink: 0;
    color: var(--primary-dark);
    position: relative;
    padding-left: 20px;
}

.param-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--primary-color);
}

.param-desc {
    flex: 1;
    color: #555;
    font-size: 0.94rem;
}

.solution-col h3 {
    padding: 0 25px 25px;
    margin-bottom: 0;
}

.solution-col h3::after {
    left: 25px;
}

/* 典型行业应用案例样式 */
.cases {
    padding: 100px 0;
    background-color: var(--gray-color);
    position: relative;
    overflow: hidden;
}

.cases::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 70% 30%, rgba(69, 188, 197, 0.08) 0%, transparent 60%);
    z-index: 1;
    animation: floatBackground 15s ease-in-out infinite;
}

.case-row {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 100px;
    position: relative;
    z-index: 2;
}

.case-col {
    flex: 1;
    min-width: 320px;
}

.case-item {
    margin-bottom: 40px;
    background-color: var(--light-color);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.case-item::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, rgba(69, 188, 197, 0.1) 0%, transparent 70%);
    border-radius: 0 0 0 100px;
    z-index: 1;
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.case-item h3 {
    background-color: var(--primary-color);
    color: var(--light-color);
    padding: 10px 20px;
    margin-bottom: 25px;
    display: inline-block;
    border-radius: var(--radius);
    font-size: 1.3rem;
    position: relative;
    z-index: 2;
    transition: var(--transition);
}

.case-item:hover h3 {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

.case-item p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 25px;
    position: relative;
    z-index: 2;
    font-size: 1.05rem;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 25px;
    position: relative;
    z-index: 2;
}

.case-grid img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
    transition: var(--transition);
    border: none;
    transform: perspective(1000px) rotateY(5deg);
}

.case-grid img:nth-child(2n) {
    transform: perspective(1000px) rotateY(-5deg);
}

.case-grid img:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.07);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.18);
}

.case-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 25px;
    margin-top: 40px;
    position: relative;
    z-index: 2;
}

.logo-container {
    background-color: var(--light-color);
    padding: 15px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    position: relative;
    overflow: hidden;
}

.logo-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(69, 188, 197, 0.05), transparent);
    transform: rotate(45deg);
    transition: var(--transition);
    z-index: 1;
}

.logo-container:hover::before {
    left: 100%;
}

.case-logos img {
    width: 100%;
    height: 70px;
    object-fit: contain;
    transition: var(--transition);
    border: none;
    position: relative;
    z-index: 2;
}

.logo-container:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

@keyframes floatBackground {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    25% {
        transform: translateY(-10px) translateX(10px);
    }
    50% {
        transform: translateY(0) translateX(20px);
    }
    75% {
        transform: translateY(10px) translateX(10px);
    }
}

/* 应用领域样式 */
.applications {
    padding: 80px 0;
    background-color: var(--light-color);
    position: relative;
}

.applications::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--gray-color));
    z-index: 1;
}

.application-circles {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 50px;
    margin-top: 40px;
    position: relative;
    z-index: 2;
}

.application-circle {
    text-align: center;
    width: 180px;
    transition: var(--transition);
}

.application-circle:hover {
    transform: translateY(-15px);
}

.circle-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 15px;
    border: 3px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    position: relative;
}

.application-circle:hover .circle-img {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.circle-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.application-circle:hover .circle-img img {
    transform: scale(1.15);
}

.circle-title {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 5px;
}

.circle-title-en {
    font-size: 0.9rem;
    color: #666;
    font-style: italic;
}

/* 合作与支持样式 */
.support {
    padding: 60px 0 40px;
    background-color: var(--gray-color);
    position: relative;
    overflow: hidden;
}

.support::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 30% 70%, rgba(69, 188, 197, 0.05) 0%, transparent 60%);
    z-index: 1;
}

.support-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 0;
    position: relative;
    z-index: 2;
}

.support-item {
    background-color: white;
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.support-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.support-item h3 {
    background-color: var(--primary-color);
    color: var(--light-color);
    padding: 6px 12px;
    margin-bottom: 15px;
    display: inline-block;
    border-radius: var(--radius);
    font-size: 1.1rem;
}

.support-item p {
    margin-bottom: 15px;
    flex-grow: 1;
}

.support-grid {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.support-grid img {
    width: 50%;
    height: 120px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: none;
}

.support-grid img:hover {
    transform: scale(1.03);
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 60px 0 20px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
    justify-content: space-between;
}

.footer-col {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    margin-bottom: 20px;
}

.footer-logo img {
    max-width: 180px;
    border-radius: var(--radius);
}

.footer h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 10px;
}

.footer h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: #aaa;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--light-color);
    transition: var(--transition);
}

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

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

.footer-logo {
    flex: 1;
    min-width: 250px;
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 60px;
    margin-right: 15px;
}

.footer-logo span {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

.footer-links {
    flex: 1;
    min-width: 200px;
}

.footer-links h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

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

.footer-links a {
    text-decoration: none;
    color: var(--light-color);
    transition: var(--transition);
}

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

.footer-contact {
    flex: 1;
    min-width: 250px;
}

.footer-contact h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.footer-contact i {
    color: var(--primary-color);
    margin-right: 10px;
    width: 20px;
}

.footer-form {
    flex: 1;
    min-width: 300px;
}

.footer-form h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--light-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.footer-form button {
    background-color: var(--primary-color);
    color: var(--light-color);
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.footer-form button:hover {
    background-color: #38a6b0;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
}

/* 响应式设计 */
@media (max-width: 992px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    h3 {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background-color: var(--light-color);
        box-shadow: var(--shadow);
        transition: var(--transition);
        z-index: 999;
    }
    .nav-links.active {
        left: 0;
    }
    .nav-links ul {
        flex-direction: column;
        padding: 20px;
    }
    .nav-links li {
        margin: 10px 0;
    }
    .hamburger {
        display: block;
    }
    .advantage-images img {
        max-width: 100%;
    }
    .case-grid img {
        transform: rotate(0);
        margin: 10px 0;
    }
}`}}}