/* Global Styles & Typography */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

html {
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}

body {
    background-color: #0A192F;
    color: #E6F1FF; /* 淡雅的蓝灰色 */
    font-family: 'Noto Sans SC', sans-serif;
    overflow-x: hidden;
    line-height: 1.8;
}

#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    pointer-events: none;
}

/* Navigation Bar */
.navbar {
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
    padding: 0.5rem 0;
    position: fixed;
    width: 100%;
    top: 0 !important;
    z-index: 1000;
}



.navbar-brand img {
    height: 45px;
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.1);
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 12px; width: 100%; }
.row { display: flex; flex-wrap: wrap; margin-left: -12px; margin-right: -12px; }
.row > [class^="col-"] { padding-left: 12px; padding-right: 12px; }
.col-md-6, .col-lg-6, .col-lg-4, .col-lg-8 { width: 100%; }
@media (min-width: 768px) { .col-md-6 { width: 50%; } }
@media (min-width: 992px) { .col-lg-6 { width: 50%; } .col-lg-4 { width: 33.3333%; } .col-lg-8 { width: 66.6667%; } }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }
.text-center { text-align: center !important; }

.navbar-nav {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 显示/隐藏工具类，兼容无 Bootstrap 情况 */
.d-none { display: none !important; }
.d-lg-block { display: block !important; }
.d-lg-none { display: block !important; }
@media (min-width: 992px) {
  .d-lg-none { display: none !important; }
  .d-lg-block { display: block !important; }
}

.nav-link {
    color: #CCD6F6 !important;
    font-weight: 400;
    font-size: 1rem;
    padding: 0.5rem 1rem !important;
    position: relative;
    border-radius: 5px;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: #64FFDA !important;
    background-color: rgba(100, 255, 218, 0.1);
}

/* Mobile Offcanvas Drawer */
.offcanvas.text-bg-dark {
    background-color: rgba(10, 25, 47, 0.95) !important;
    border-left: 1px solid rgba(100, 255, 218, 0.2);
    backdrop-filter: blur(15px);
}
.offcanvas {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 80%;
    max-width: 360px;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0s linear 0.3s;
    z-index: 1045;
}
.offcanvas.show {
    transform: translateX(0);
    visibility: visible;
    transition-delay: 0s;
}
.offcanvas-header .offcanvas-title {
    color: #E6F1FF;
}
.offcanvas .nav-link {
    color: #CCD6F6 !important;
    padding: 0.75rem 0.5rem !important;
    border-radius: 8px;
}
.offcanvas .nav-link:hover {
    color: #64FFDA !important;
    background-color: rgba(100, 255, 218, 0.1);
}

/* Hero Section */

.hero-overlay {
    display: none !important;
}

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

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}



@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animated-text {
    animation: fadeInDown 1s ease-out forwards;
    color: #FFFFFF;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.animated-text-p {
    animation: fadeInUp 1s ease-out 0.5s forwards;
    opacity: 0; /* Start hidden */
}

.btn-cta {
    background-color: #64FFDA;
    color: #0A192F;
    border: none;
    padding: 15px 35px;
    font-weight: 700;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease-out 1s forwards;
    opacity: 0; /* Start hidden */
}

.btn-cta:hover {
    background-color: #fff;
    color: #0A192F;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(100, 255, 218, 0.2);
}

.btn-outline-light {
    border: 2px solid #CCD6F6;
    color: #CCD6F6;
    background: transparent;
    padding: 15px 35px;
    font-weight: 700;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease-out 1.2s forwards;
    opacity: 0;
}

.btn-outline-light:hover {
    background-color: #CCD6F6;
    color: #0A192F;
    border-color: #CCD6F6;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(204, 214, 246, 0.2);
}

/* 基础按钮与间距工具类（无 Bootstrap 时兜底） */
.btn {
    display: inline-block;
    text-decoration: none;
    cursor: pointer;
}
.btn-lg { font-size: 1.1rem; }
.btn-primary { background-color: #64FFDA; color: #0A192F; }
.me-2 { margin-right: 0.5rem !important; }
.me-3 { margin-right: 1rem !important; }
.btn-close { appearance: none; border: 0; background: none; width: 1em; height: 1em; position: relative; }
.btn-close::before, .btn-close::after { content: ""; position: absolute; left: 50%; top: 50%; width: 1em; height: 2px; background: #fff; transform-origin: center; }
.btn-close::before { transform: translate(-50%, -50%) rotate(45deg); }
.btn-close::after { transform: translate(-50%, -50%) rotate(-45deg); }

.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding: 80px 15px 0 15px;
    /* 透明背景以直接展示粒子效果 */
    background: none;
    scroll-snap-align: start;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 1rem;
    text-shadow: 0 2px 15px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 1.25rem;
    font-weight: 300;
    color: #CCD6F6;
    max-width: 800px;
    margin: 0 auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* General Section Styling */
.section {
    min-height: 100vh;
    padding: 90px 0 60px 0;
    position: relative;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    display: flex;
    align-items: center;
    justify-content: center;
    scroll-snap-align: start;
    /* 防止通过锚点或子路径进入时被固定导航遮挡 */
    scroll-margin-top: 80px;
}

.section .container {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Partners Section - 紧凑化处理 */
#partners.section {
    padding: 120px 0 60px 0;
    background: transparent;
}

.section.animate-in {
    opacity: 0;
    transform: translateY(50px);
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes drawerEnter {
    from { opacity: 0.6; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.section.drawer-enter {
    animation: drawerEnter 0.35s ease;
}

.hero-section.drawer-enter {
    animation: drawerEnter 0.35s ease;
}

.section-title {
    text-align: center;
    margin-bottom: 32px;
    font-size: 2.5rem;
    font-weight: 700;
    color: #E6F1FF;
    position: relative;
    padding-bottom: 25px;
    white-space: nowrap;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: #64FFDA;
    border-radius: 2px;
}

/* About Us Section */
#about {
    position: relative;
    background: transparent;
    overflow: hidden;
    padding: 160px 0 60px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

#about .container {
    position: relative;
    z-index: 1;
}





#about h3 {
    color: #64FFDA;
    font-weight: 700;
    margin-bottom: 1rem;
}

#about p {
    color: #CCD6F6;
}

#about .btn-outline-primary {
    color: #64FFDA;
    border-color: #64FFDA;
    transition: all 0.3s ease;
}

#about .btn-outline-primary:hover {
    background-color: #64FFDA;
    color: #0A192F;
}

/* 查看电子书按钮样式 - 全新设计 */
.btn-outline-light {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, 
        rgba(139, 69, 19, 0.15) 0%,
        rgba(160, 82, 45, 0.2) 50%,
        rgba(205, 133, 63, 0.15) 100%);
    border: 2px solid rgba(222, 184, 135, 0.6);
    color: #DEB887;
    padding: 12px 28px;
    font-weight: 600;
    border-radius: 50px;
    backdrop-filter: blur(15px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 
        0 6px 20px rgba(139, 69, 19, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    animation: fadeInUp 1s ease-out 1.2s forwards;
    opacity: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    font-size: 0.95rem;
}

.btn-outline-light::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 215, 0, 0.4) 30%,
        rgba(255, 223, 0, 0.6) 50%,
        rgba(255, 215, 0, 0.4) 70%,
        transparent 100%);
    transition: left 0.8s ease;
    z-index: 1;
}

.btn-outline-light::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.4s ease;
    z-index: 0;
}

.btn-outline-light:hover::before {
    left: 100%;
}

.btn-outline-light:hover::after {
    width: 200px;
    height: 200px;
}

.btn-outline-light:hover {
    background: linear-gradient(135deg, 
        rgba(184, 134, 11, 0.25) 0%,
        rgba(217, 119, 6, 0.3) 50%,
        rgba(245, 158, 11, 0.25) 100%);
    border-color: rgba(251, 191, 36, 0.8);
    color: #FCD34D;
    transform: translateY(-4px) scale(1.03);
    box-shadow: 
        0 20px 40px rgba(139, 69, 19, 0.4),
        0 0 30px rgba(251, 191, 36, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    text-shadow: 0 0 15px rgba(251, 191, 36, 0.8);
}

.btn-outline-light:active {
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s ease;
}

.btn-outline-light i {
    position: relative;
    z-index: 2;
    transition: all 0.4s ease;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.btn-outline-light:hover i {
    color: #FCD34D;
    transform: scale(1.15) rotateY(10deg);
    filter: drop-shadow(0 0 10px rgba(251, 191, 36, 0.8));
}

/* 按钮点击时的脉冲效果 */
@keyframes buttonPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(251, 191, 36, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0);
    }
}

.btn-outline-light:focus {
    animation: buttonPulse 0.8s ease-out;
    outline: none;
}

/* 书本翻页动画效果 */
@keyframes bookFlip {
    0% { transform: rotateY(0deg); }
    50% { transform: rotateY(-15deg); }
    100% { transform: rotateY(0deg); }
}

.btn-outline-light:hover i.fa-book-open {
    animation: bookFlip 0.6s ease-in-out;
}

.section-subtitle {
    font-size: 2rem;
    font-weight: 600;
    color: #E6F1FF;
    margin-bottom: 2rem;
}

.value-item, .service-item {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.8), rgba(22, 45, 85, 0.6));
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 15px;
    padding: 2rem 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.value-item:hover, .service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2), 0 0 20px rgba(100, 255, 218, 0.2);
}

.value-item i, .service-item i {
    color: #64FFDA;
    transition: color 0.3s ease;
}

.value-item h4 {
    color: #CCD6F6;
    font-size: 1.1rem;
    font-weight: 500;
    margin-top: 1rem;
}

.service-item p {
    color: #CCD6F6;
    font-size: 1rem;
    margin-bottom: 0;
}


.about-card {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.9), rgba(22, 45, 85, 0.7));
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 15px;
    padding: 2.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(5px);
    width: 100%;
    display: flex;
    flex-direction: column;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(100, 255, 218, 0.3);
}

.about-card .card-title {
    color: #64FFDA;
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.about-card p {
    color: #CCD6F6;
    font-size: 1rem;
    flex-grow: 1;
}

.about-card-new {
    background-color: rgba(17, 34, 64, 0.75);
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid rgba(100, 255, 218, 0.2);
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.about-card-new:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
    border-color: rgba(100, 255, 218, 0.5);
}

.about-card-new h3 {
    color: #64FFDA;
    font-weight: 700;
}

.about-card-new p {
    color: #A8B2D1;
    font-size: 1.05rem;
}

#about .img-fluid {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(2, 12, 27, 0.7);
    margin-top: 2rem;
}

/* 公司概况与核心理念融合卡片样式 */
.company-overview-container {
    margin-bottom: 4rem;
    width: 100%;
}

.company-overview-card {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.6), rgba(22, 45, 85, 0.4));
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 15px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
    height: 100%;
}

.company-overview-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3), 0 0 25px rgba(100, 255, 218, 0.2);
    border-color: rgba(100, 255, 218, 0.6);
}



.overview-title {
    color: #64FFDA;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
}

.overview-section {
    padding: 1.5rem;
    background: transparent;
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 15px;
    height: 100%;
    transition: all 0.3s ease;
    backdrop-filter: none;
}

.overview-section:hover {
    transform: translateY(-5px);
    border-color: rgba(100, 255, 218, 0.4);
    box-shadow: none;
}

.section-subtitle {
    color: #E6F1FF;
    font-weight: 600;
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.section-subtitle i {
    color: #64FFDA;
    font-size: 1.2rem;
}

.overview-section p {
    color: #CCD6F6;
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.overview-section p:last-child {
    margin-bottom: 0;
}

/* 电子书查看器样式 */
.ebook-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 25, 47, 0.95), rgba(17, 34, 64, 0.9));
    backdrop-filter: blur(20px);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.ebook-viewer.active {
    display: flex;
    opacity: 1;
    transform: scale(1);
}

.ebook-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 90%;
    max-width: 1200px;
    height: 90%;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.ebook-viewer.active .ebook-container {
    transform: translateY(0);
}

.ebook-page-container {
    position: relative;
    width: 80%;
    height: 100%;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.ebook-container {
     display: flex;
     align-items: center;
     justify-content: center;
     gap: 20px;
     perspective: 1200px;
     transform-style: preserve-3d;
}

.ebook-page {
    position: relative;
    width: 48%;
    height: 90%;
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.75), rgba(22, 45, 85, 0.55));
    border: 2px solid rgba(100, 255, 218, 0.3);
    border-radius: 20px;
    backdrop-filter: blur(15px);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.5),
        0 0 50px rgba(100, 255, 218, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transform-style: preserve-3d;
    transition: transform 0.9s cubic-bezier(0.645, 0.045, 0.355, 1),
                opacity 0.9s cubic-bezier(0.645, 0.045, 0.355, 1),
                filter 0.9s cubic-bezier(0.645, 0.045, 0.355, 1),
                box-shadow 0.9s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.ebook-page-left {
    transform-origin: right center;
}

.ebook-page-right {
    transform-origin: left center;
}

.ebook-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        rgba(100, 255, 218, 0.1) 0%, 
        transparent 25%, 
        transparent 75%, 
        rgba(100, 255, 218, 0.1) 100%);
    pointer-events: none;
    z-index: 1;
}

.ebook-page img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 18px;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-style: preserve-3d;
}

.page-number {
    position: absolute;
    bottom: 20px;
    right: 30px;
    background: rgba(100, 255, 218, 0.9);
    color: #0A192F;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(100, 255, 218, 0.3);
    z-index: 2;
}

/* 箭头样式 */
.ebook-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: linear-gradient(145deg, rgba(100, 255, 218, 0.2), rgba(100, 255, 218, 0.1));
    border: 2px solid rgba(100, 255, 218, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    backdrop-filter: blur(10px);
    z-index: 10;
}

.ebook-arrow:hover {
    background: linear-gradient(145deg, rgba(100, 255, 218, 0.4), rgba(100, 255, 218, 0.2));
    border-color: rgba(100, 255, 218, 0.8);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 
        0 10px 30px rgba(100, 255, 218, 0.3),
        0 0 20px rgba(100, 255, 218, 0.4);
}

.ebook-arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.ebook-arrow-left {
    left: 20px;
}

.ebook-arrow-right {
    right: 20px;
}

.ebook-arrow i {
    color: #64FFDA;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.ebook-arrow:hover i {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(100, 255, 218, 0.8);
}

/* 关闭按钮 */
.ebook-close {
    position: absolute;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(145deg, rgba(255, 100, 100, 0.2), rgba(255, 100, 100, 0.1));
    border: 2px solid rgba(255, 100, 100, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    backdrop-filter: blur(10px);
    z-index: 10;
}

.ebook-close:hover {
    background: linear-gradient(145deg, rgba(255, 100, 100, 0.4), rgba(255, 100, 100, 0.2));
    border-color: rgba(255, 100, 100, 0.8);
    transform: scale(1.1);
    box-shadow: 
        0 10px 30px rgba(255, 100, 100, 0.3),
        0 0 20px rgba(255, 100, 100, 0.4);
}

.ebook-close i {
    color: #ff6464;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.ebook-close:hover i {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 100, 100, 0.8);
}

/* 翻页动画效果 - 仿真翻书效果 */
/* 3D翻书效果 - 基于知乎文章的实现原理 */
.ebook-page.flipping {
    transition: transform 0.9s cubic-bezier(0.645, 0.045, 0.355, 1),
                box-shadow 0.9s cubic-bezier(0.645, 0.045, 0.355, 1);
    z-index: 10;
}

/* 下一页时：右页翻书效果 - 真实的3D翻页 */
.ebook-page-right.flipping {
    transform: rotateY(-180deg);
    transform-origin: left center;
    z-index: 10;
    box-shadow: 
        -15px 0 40px rgba(0, 0, 0, 0.6),
        -5px 0 20px rgba(0, 0, 0, 0.4),
        0 0 50px rgba(100, 255, 218, 0.1);
}

/* 下一页时：左页保持静止，轻微后退效果 */
.ebook-page-left.flipping {
    transform: translateZ(-30px) scale(0.96) rotateY(5deg);
    filter: brightness(0.85);
    opacity: 0.7;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(100, 255, 218, 0.1);
}

/* 上一页时：左页翻书效果 - 真实的3D翻页 */
.ebook-page-left.flipping-prev {
    transform: rotateY(180deg);
    transform-origin: right center;
    z-index: 10;
    box-shadow: 
        15px 0 40px rgba(0, 0, 0, 0.6),
        5px 0 20px rgba(0, 0, 0, 0.4),
        0 0 50px rgba(100, 255, 218, 0.1);
}

/* 上一页时：右页保持静止，轻微后退效果 */
.ebook-page-right.flipping-prev {
    transform: translateZ(-30px) scale(0.96) rotateY(-5deg);
    filter: brightness(0.85);
    opacity: 0.7;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(100, 255, 218, 0.1);
}

.ebook-page.entering {
    transform: rotateY(-3deg) scale(1.02);
    filter: brightness(1.1) saturate(1.2);
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.95), rgba(22, 45, 85, 0.9));
    border-color: rgba(100, 255, 218, 0.5);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 60px rgba(100, 255, 218, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    z-index: 2;
    transition: all 1s cubic-bezier(0.23, 1, 0.32, 1);
}

.ebook-page-left.entering {
    transform: rotateY(-3deg) scale(1.02) translateX(-5px);
}

.ebook-page-right.entering {
    transform: rotateY(3deg) scale(1.02) translateX(5px);
}

/* 页面正面和背面结构 */
.ebook-page-front {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform: rotateY(0deg);
}

.ebook-page-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform: rotateY(180deg);
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.9), rgba(22, 45, 85, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(100, 255, 218, 0.8);
    font-size: 1.2rem;
    border-radius: 18px;
}

/* 翻页时的阴影效果 */
.ebook-page-right.flipping::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        rgba(0, 0, 0, 0.4) 0%, 
        rgba(0, 0, 0, 0.2) 30%, 
        transparent 70%);
    z-index: 1;
    pointer-events: none;
    border-radius: 18px;
}

.ebook-page-left.flipping-prev::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(-90deg, 
        rgba(0, 0, 0, 0.4) 0%, 
        rgba(0, 0, 0, 0.2) 30%, 
        transparent 70%);
    z-index: 1;
    pointer-events: none;
    border-radius: 18px;
}

/* 科幻光效动画 */
@keyframes scanLine {
    0% {
        transform: translateX(-100%);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateX(100%);
        opacity: 0;
    }
}

.ebook-page.scanning::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(100, 255, 218, 0.3) 50%, 
        transparent 100%);
    animation: scanLine 1s ease-in-out;
    pointer-events: none;
    z-index: 3;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .company-overview-card {
        padding: 2rem 1.5rem;
    }
    
    .overview-title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    .overview-section {
        padding: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    .ebook-container {
        width: 95%;
        height: 95%;
    }
    
    .ebook-page-container {
        width: 95%;
        flex-direction: row;
        gap: 15px;
    }
    
    .ebook-page {
        width: 40%;
        height: 90%;
    }
    
    .ebook-arrow {
        width: 50px;
        height: 50px;
    }
    
    .ebook-arrow-left {
        left: 20px;
    }
    
    .ebook-arrow-right {
        right: 20px;
    }
    
    .ebook-close {
        top: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}



/* 融合卡片样式 */
.about-integrated-container {
    margin-top: 4rem;
    width: 100%;
}

.about-integrated-card {
    background: transparent;
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 20px;
    padding: 3rem;
    backdrop-filter: none;
    box-shadow: none;
    position: relative;
    overflow: hidden;
}



.integrated-title {
    color: #64FFDA;
    font-weight: 700;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.integrated-title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #64FFDA;
    border-radius: 2px;
}



/* 服务范围部分 */
.services-section {
    margin-bottom: 0;
    margin-top: 1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.service-item-integrated {
    background: linear-gradient(145deg, rgba(29, 45, 68, 0.4), rgba(17, 34, 64, 0.3));
    border: 1px solid rgba(100, 255, 218, 0.1);
    border-radius: 8px;
    padding: 0.8rem 0.5rem;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(3px);
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    min-height: 88px;
}

.service-item-integrated:hover {
    transform: translateY(-3px);
    border-color: rgba(100, 255, 218, 0.3);
    background: linear-gradient(145deg, rgba(29, 45, 68, 0.6), rgba(17, 34, 64, 0.5));
}

.service-item-integrated i {
    font-size: 1.2rem;
    color: #64FFDA;
    margin-bottom: 0;
    display: block;
}

.service-item-integrated span {
    color: #CCD6F6;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.2;
}

/* 响应式设计 - 关于我们部分 */
@media (max-width: 1200px) {
    .company-overview-card {
        padding: 3rem;
    }
    
    .overview-title {
        font-size: 2rem;
    }
}

@media (max-width: 992px) {
    #about {
        padding: 140px 0 60px 0;
        min-height: auto;
    }
    
    .company-overview-card {
        padding: 2.5rem;
        margin: 0 1rem;
    }
    
    .overview-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .overview-section {
        padding: 2rem;
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 768px) {
    .section-title {
        white-space: normal;
        font-size: 2rem;
        padding-bottom: 15px;
    }
    
    #about {
        padding: 120px 0 60px 0;
        background-attachment: scroll;
    }
    
    .company-overview-card {
        padding: 2rem 1.5rem;
        margin: 0 0.5rem;
        border-radius: 20px;
    }
    
    .company-overview-card:hover {
        transform: translateY(-5px) scale(1.01);
    }
    
    .overview-title {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }
    
    .overview-section {
        padding: 1.5rem;
        border-radius: 15px;
    }
    
    .section-subtitle {
        font-size: 1.2rem;
        margin-bottom: 1rem;
        gap: 0.8rem;
    }
    
    .section-subtitle i {
        font-size: 1.2rem;
        padding: 0.4rem;
    }
    
    .overview-section p {
        font-size: 1rem;
        line-height: 1.6;
        padding-left: 0.8rem;
    }
    
    .about-integrated-card {
        padding: 2rem 1.5rem;
    }
    
    .integrated-title {
        font-size: 1.5rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }
    
    .service-item-integrated {
        padding: 0.6rem 0.3rem;
    }
    
    .service-item-integrated i {
        font-size: 1rem;
        margin-bottom: 0.3rem;
    }
    
    .service-item-integrated span {
        font-size: 0.7rem;
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 1.8rem;
        padding-bottom: 12px;
    }
    
    #about {
        padding: 110px 0 40px 0;
    }
    
    .company-overview-card {
        padding: 1.5rem 1rem;
        margin: 0;
    }
    
    .overview-title {
        font-size: 1.4rem;
    }
    
    .overview-section {
        padding: 1.2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .section-subtitle i {
        align-self: flex-start;
    }
    
    .overview-section p {
        font-size: 0.95rem;
        padding-left: 0;
    }
    
    .overview-section p::before {
        display: none;
    }
}

/* Core Business Section */
#services .lead {
    max-width: 800px;
    margin: 0 auto;
    color: #CCD6F6;
}

.service-card {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.9), rgba(22, 45, 85, 0.7));
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 15px;
    padding: 1.8rem;
    text-align: center;
    transition: all 0.3s ease-in-out;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(100, 255, 218, 0.3);
    border-color: rgba(100, 255, 218, 0.5);
}

.service-icon {
    font-size: 2.5rem;
    color: #64FFDA;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.service-card .card-title {
    color: #E6F1FF;
    font-weight: 700;
    margin-bottom: 1rem;
}

.service-card .card-text {
    color: #CCD6F6;
    font-size: 0.95rem;
    line-height: 1.6;
}

.bg-light-navy {
    background-color: #112240;
}

.business-card {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.8), rgba(22, 45, 85, 0.6));
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(5px);
    height: 100%;
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(100, 255, 218, 0.3);
}

.business-card .card-title {
    color: #64FFDA;
    font-weight: 700;
    margin-bottom: 1rem;
}

.business-card .card-text {
    color: #CCD6F6;
    font-size: 0.95rem;
}

/* Qualifications Section - 横向跑马灯 */
.qualification-marquee-container {
    width: 100%;
    overflow: hidden;
    padding: 40px 20px;
    position: relative;
    background: linear-gradient(135deg, rgba(17, 34, 64, 0.8), rgba(22, 45, 85, 0.6));
    margin: 20px 0;
    border-radius: 15px;
}

.qualification-marquee-container::before,
.qualification-marquee-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.qualification-marquee-container::before {
    left: 0;
    background: linear-gradient(to right, #0A192F, rgba(10, 25, 47, 0));
}

.qualification-marquee-container::after {
    right: 0;
    background: linear-gradient(to left, #0A192F, rgba(10, 25, 47, 0));
}

@keyframes qualificationScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.qualification-marquee {
    display: flex;
    width: calc(280px * 20); /* 280px per item, 10 items * 2 for seamless loop */
    animation: qualificationScroll 60s linear infinite;
    gap: 20px;
}

.qualification-marquee:hover {
    animation-play-state: paused;
}

.qualification-item {
    flex: 0 0 260px;
    background: linear-gradient(145deg, rgba(29, 45, 68, 0.9), rgba(17, 34, 64, 0.8));
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.qualification-item:hover {
    transform: translateY(-10px) scale(1.05);
    border-color: rgba(100, 255, 218, 0.5);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(100, 255, 218, 0.3);
}

.qualification-item img {
    width: 100%;
    height: 180px;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px;
}

.qualification-item:hover img {
    transform: scale(1.1);
}

.qualification-item h5 {
    color: #64FFDA;
    font-weight: 600;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.4;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .qualification-marquee {
        animation-duration: 40s;
    }
    
    .qualification-item {
        flex: 0 0 220px;
        padding: 15px;
    }
    
    .qualification-item img {
        height: 150px;
    }
    
    .qualification-item h5 {
        font-size: 0.85rem;
    }
}

/* Partners Section - 3排交叉跑马灯 */
.partners-marquee-wrapper {
    width: 100%;
    margin: 2rem 0 0;
    padding: 0;
    box-sizing: border-box;
}

.partners-marquee-container {
    width: 100%;
    overflow: hidden;
    padding: 40px 20px;
    position: relative;
    background: linear-gradient(135deg, rgba(17, 34, 64, 0.8), rgba(22, 45, 85, 0.6));
    margin: 20px 0;
    border-radius: 15px;
}

.partners-marquee-container::before,
.partners-marquee-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.partners-marquee-container::before {
    left: 0;
    background: linear-gradient(to right, #0A192F, rgba(10, 25, 47, 0));
}

.partners-marquee-container::after {
    right: 0;
    background: linear-gradient(to left, #0A192F, rgba(10, 25, 47, 0));
}

.partners-row {
    margin-bottom: 15px;
    overflow: hidden;
    position: relative;
}

.partners-row:last-child {
    margin-bottom: 0;
}

/* 渐变遮罩效果已移除，让粒子效果可见 */

/* 滚动动画 - 交叉运动优化版 */
@keyframes scrollRight {
    0% {
        transform: translate3d(0%, 0, 0);
    }
    100% {
        transform: translate3d(-25%, 0, 0);
    }
}

@keyframes scrollLeft {
    0% {
        transform: translate3d(-25%, 0, 0);
    }
    100% {
        transform: translate3d(0%, 0, 0);
    }
}

.partners-scroll {
    display: flex;
    width: calc(180px * 20); /* 150px logo + 30px gap = 180px per item, 5 logos * 4 for seamless loop */
    gap: 30px;
    align-items: center;
    will-change: transform; /* 优化GPU加速 */
    backface-visibility: hidden; /* 防止闪烁 */
    perspective: 1000px; /* 3D加速 */
}

.partners-scroll-right {
    animation: scrollRight 50s linear infinite;
    animation-fill-mode: both;
}

.partners-scroll-middle {
    animation: scrollLeft 55s linear infinite;
    animation-fill-mode: both;
}

.partners-scroll-bottom {
    animation: scrollRight 60s linear infinite;
    animation-fill-mode: both;
}

/* 悬停暂停 */
.partners-scroll:hover {
    animation-play-state: paused;
}

/* LOGO样式 - 默认彩色 */
.partners-scroll img {
    width: 150px;
    height: 70px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(100, 255, 218, 0.1);
    flex-shrink: 0;
}

.partners-scroll img:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2), 0 0 20px rgba(100, 255, 218, 0.3);
    border-color: rgba(100, 255, 218, 0.4);
    background: rgba(255, 255, 255, 1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    #partners.section {
        padding: 40px 0;
    }
    
    .partners-marquee-container {
        padding: 15px 0;
    }
    
    .partners-row {
        margin-bottom: 10px;
    }
    
    .partners-scroll {
        width: calc(130px * 20); /* 110px logo + 20px gap = 130px per item, 5 logos * 4 for seamless loop */
        gap: 20px;
    }
    
    .partners-scroll img {
        width: 110px;
        height: 50px;
        padding: 10px;
    }
    
    .partners-scroll-right {
        animation-duration: 40s;
    }
    
    .partners-scroll-middle {
        animation-duration: 45s;
    }
    
    .partners-scroll-bottom {
        animation-duration: 50s;
    }
}

/* Contact Section */
.contact-info-box {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.9), rgba(22, 45, 85, 0.7));
    border: 1px solid rgba(100, 255, 218, 0.3);
    border-radius: 15px;
    padding: 1.6rem;
    backdrop-filter: blur(5px);
    height: auto;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(100, 255, 218, 0.1);
    overflow: visible;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

/* Contact success toast */
.contact-form { position: relative; }
.contact-form .text-center { position: relative; }
.contact-toast {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  background: rgba(12, 180, 160, 0.95);
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  font-size: 13px;
  letter-spacing: 0.3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 3;
}
.contact-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-6px);
}



.address-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.address-content p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.4;
}



/* 电子书模态框样式 */
.ebook-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.ebook-modal-content {
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.95), rgba(22, 45, 85, 0.9));
    border: 1px solid rgba(100, 255, 218, 0.3);
    border-radius: 15px;
    width: 90%;
    max-width: 900px;
    max-height: 90%;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.ebook-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(100, 255, 218, 0.2);
    background: linear-gradient(135deg, rgba(22, 45, 85, 0.8), rgba(17, 34, 64, 0.9));
}

.ebook-modal-header h3 {
    color: #64FFDA;
    margin: 0;
    font-weight: 700;
    font-size: 1.5rem;
}

.ebook-close {
    color: #CCD6F6;
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.ebook-close:hover {
    color: #64FFDA;
}

.ebook-modal-body {
    padding: 2rem;
}

.ebook-viewer {
    text-align: center;
}

.ebook-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(17, 34, 64, 0.5);
    border-radius: 10px;
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.ebook-btn {
    background: linear-gradient(145deg, rgba(100, 255, 218, 0.1), rgba(100, 255, 218, 0.05));
    border: 1px solid rgba(100, 255, 218, 0.3);
    color: #64FFDA;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.ebook-btn:hover:not(:disabled) {
    background: linear-gradient(145deg, rgba(100, 255, 218, 0.2), rgba(100, 255, 218, 0.1));
    border-color: rgba(100, 255, 218, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 255, 218, 0.2);
}

.ebook-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#pageInfo {
    color: #E6F1FF;
    font-weight: 600;
    font-size: 1.1rem;
    min-width: 80px;
}

.ebook-content {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 1rem;
    border: 1px solid rgba(100, 255, 218, 0.1);
    max-height: 60vh;
    overflow: auto;
}

#ebookImage {
    max-width: 100%;
    max-height: 55vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

#ebookImage:hover {
    transform: scale(1.02);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .ebook-modal-content {
        width: 95%;
        max-height: 95%;
    }
    
    .ebook-modal-header {
        padding: 1rem 1.5rem;
    }
    
    .ebook-modal-header h3 {
        font-size: 1.2rem;
    }
    
    .ebook-modal-body {
        padding: 1rem;
    }
    
    .ebook-controls {
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .ebook-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .ebook-content {
        max-height: 50vh;
    }
    
    #ebookImage {
        max-height: 45vh;
    }
}

.contact-info-box {
    border-radius: 15px;
    border: 1px solid rgba(100, 255, 218, 0.2);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    height: 100%;
}

.contact-info-box h4 {
    color: #E6F1FF;
    font-weight: 600;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.6rem;
}

.info-item i {
    font-size: 1.5rem;
    color: #64FFDA;
    margin-right: 1.5rem;
    width: 30px;
    text-align: center;
}

.info-item p {
    margin: 0;
    color: #CCD6F6;
    font-size: 1.05rem;
}

.contact-form .form-group {
    margin-bottom: 0.75rem;
    position: relative;
}

.contact-form .form-control {
    background-color: #112240;
    border: 1px solid #233554;
    color: #E6F1FF;
    border-radius: 8px;
    padding: 0.85rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-form .form-control.error {
    border-color: #e57373;
    box-shadow: 0 0 0 0.2rem rgba(229, 115, 115, 0.25);
}

.field-hint {
    position: absolute;
    right: 10px;
    top: 8px;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    line-height: 1;
    color: #fff;
    background: rgba(200, 60, 60, 0.95);
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    z-index: 2;
}

.field-hint.ok { background: rgba(12, 180, 160, 0.95); }
.field-hint.show { opacity: 1; transform: translateY(0); }

.contact-form .form-control::placeholder {
    color: #A8B2D1;
}

.contact-form .form-control:focus {
    background-color: #112240;
    color: #E6F1FF;
    border-color: #64FFDA;
    box-shadow: 0 0 0 0.2rem rgba(100, 255, 218, 0.25);
}

/* Enhanced Footer */
.bg-dark-navy {
    background-color: #0A192F;
}

/* Tech Services Concept Section */
.tech-services-concept {
    background: transparent;
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    border: none;
    text-align: center;
    margin: 0 auto;
    max-width: 1200px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.concept-title {
    display: none;
}

.concept-container {
    position: relative;
    height: auto;
    min-height: 400px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    width: 100%;
    max-width: 1000px;
}

/* Service Domains Layout */
.service-domains {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    max-width: 700px;
    position: relative;
    z-index: 2;
    gap: 1.5rem;
}

.service-domain {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 1rem;
    background: linear-gradient(145deg, rgba(17, 34, 64, 0.8), rgba(22, 45, 85, 0.6));
    border: 2px solid rgba(100, 255, 218, 0.3);
    border-radius: 15px;
    transition: all 0.3s ease;
    min-width: 180px;
    flex: 1;
    max-width: 200px;
    position: relative;
}

.service-domain:hover {
    transform: translateY(-10px) scale(1.05);
    border-color: rgba(100, 255, 218, 0.8);
    box-shadow: 0 15px 40px rgba(100, 255, 218, 0.3);
}

.domain-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #64FFDA, #4ECDC4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.8rem;
    box-shadow: 0 8px 20px rgba(100, 255, 218, 0.3);
}

.domain-icon i {
    font-size: 2rem;
    color: #0A192F;
}

.domain-title {
    color: #E6F1FF;
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    text-align: center;
}

.domain-services {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.service-tag {
    background: rgba(100, 255, 218, 0.1);
    color: #64FFDA;
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(100, 255, 218, 0.3);
    transition: all 0.3s ease;
}

.service-tag:hover {
    background: rgba(100, 255, 218, 0.2);
    transform: scale(1.05);
}

/* Center Hub */
.center-hub {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hub-circle {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, rgba(17, 34, 64, 0.9), rgba(22, 45, 85, 0.8));
    border: 3px solid rgba(100, 255, 218, 0.5);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(100, 255, 218, 0.4);
    animation: hubPulse 3s ease-in-out infinite;
}

.hub-circle i {
    font-size: 2rem;
    color: #64FFDA;
    margin-bottom: 0.3rem;
}

.hub-circle span {
    color: #E6F1FF;
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
}

/* Connection Lines - Hidden for vertical layout */
.connection-lines {
    display: none;
}

/* Animations */
@keyframes hubPulse {
    0%, 100% { 
        box-shadow: 0 0 30px rgba(100, 255, 218, 0.4);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 0 50px rgba(100, 255, 218, 0.6);
        transform: scale(1.05);
    }
}

@keyframes connectionFlow {
    0% { 
        opacity: 0.2;
        background-size: 200% 100%;
        background-position: -200% 0;
    }
    50% { 
        opacity: 0.8;
        background-position: 0% 0;
    }
    100% { 
        opacity: 0.2;
        background-position: 200% 0;
    }
}

/* Responsive Design for Concept */
@media (max-width: 1024px) {
    .tech-services-concept {
        padding: 1.5rem;
        min-height: 80vh;
    }
    
    .concept-container {
        flex-direction: column;
        gap: 2rem;
        min-height: 300px;
    }
    
    .service-domains {
        max-width: 100%;
        gap: 1rem;
    }
    
    .service-domain {
        min-width: 160px;
        max-width: 180px;
        padding: 1.2rem 0.8rem;
    }
}

@media (max-width: 768px) {
    .tech-services-concept {
        padding: 1rem;
        min-height: auto;
    }
    
    .concept-container {
        flex-direction: column;
        gap: 1.5rem;
        min-height: auto;
    }
    
    .service-domains {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
        max-width: 100%;
    }
    
    .service-domain {
        min-width: 250px;
        max-width: 300px;
        padding: 1.5rem 1rem;
    }
    
    .center-hub {
        order: 2;
        margin: 1rem 0;
    }
    
    .domain-icon {
        width: 70px;
        height: 70px;
    }
    
    .domain-icon i {
        font-size: 2rem;
    }
    
    .hub-circle {
        width: 90px;
        height: 90px;
    }
}

.footer-enhanced {
    position: relative;
    border-top: 1px solid #1D2D44;
    scroll-snap-align: start;
}

/* Main Footer Content */
.footer-main {
    background-color: #0A192F;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px 0;
    position: relative;
}

.footer-main .container {
    padding-left: 15px;
    padding-right: 15px;
    margin-left: auto;
    margin-right: auto;
    max-width: 1140px;
}

/* 新的footer布局样式 */
.footer-content-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    width: 100%;
    padding: 2rem 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 4rem;
}

.footer-item {
    flex: 1;
    text-align: left;
}

.footer-item:first-child {
    flex: 1.5;
    max-width: 400px;
}

.footer-item:nth-child(2) {
    flex: 1;
    max-width: 250px;
}

.footer-item:last-child {
    flex: 1;
    max-width: 250px;
}

.footer-logo {
    max-height: 40px;
}

.footer-description {
    max-width: 280px;
    line-height: 1.6;
}

.footer-heading {
    color: #E6F1FF;
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #CCD6F6;
    text-decoration: none;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer-links a:hover {
    color: #64FFDA;
    padding-left: 5px;
}

.social-links a {
    color: #CCD6F6;
    font-size: 1.5rem;
    margin-right: 1.5rem;
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

.social-links a:hover {
    color: #64FFDA;
    transform: translateY(-3px);
}

.footer-divider {
    border-top: 1px solid #1D2D44;
    margin: 2rem 0;
}

.text-muted {
    color: #A8B2D1 !important;
}

/* Responsive Design for Footer */
@media (max-width: 1200px) {
    .footer-main .container {
        max-width: 960px;
        padding-left: 15px;
        padding-right: 15px;
    }
}

@media (max-width: 992px) {
    .footer-main .container {
        max-width: 720px;
        padding-left: 15px;
        padding-right: 15px;
    }
}

@media (max-width: 768px) {
    .footer-main .container {
        max-width: 540px;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .footer-content-wrapper {
        min-height: auto;
        padding: 1.5rem 0;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
        padding: 0 1rem;
    }
    
    .footer-item {
        max-width: 100% !important;
        text-align: center;
        flex: none !important;
    }
    
    .services-grid-footer {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .concept-layer {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .concept-item {
        flex: 0 0 calc(50% - 0.5rem);
    }
    
    .vision-content {
        gap: 1rem;
    }
    
    .footer-section {
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    .footer-main .container {
        max-width: 100%;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .services-grid-footer {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .concept-layer {
        flex-direction: column;
        gap: 1rem;
    }
    
    .concept-item {
        flex: none;
        width: 100%;
        max-width: 200px;
    }
    
    .drawer-toggle-content {
        padding: 1rem 0;
    }
    
    .footer-drawer.expanded {
        max-height: 1200px;
        padding: 2rem 0;
    }
}
/* ===== Loading Overlay：初始加载蒙版 ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #0a3a4a 0%, #0aa3a3 100%);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.35s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loading-logo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: ht-spin 0.9s linear infinite;
}

@keyframes ht-spin {
  to { transform: rotate(360deg); }
}