/* ==========================================
   NovaSight - 智能导盲杖官网样式
   颜色方案：#FF9C00 (橙色) + #05152E (深蓝) + #FFFFFF (白色)
   ========================================== */

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

:root {
    --primary-color: #FF9C00;
    --dark-bg: #05152E;
    --light-bg: #0a1e3f;
    --white: #FFFFFF;
    --text-gray: #b0b8c9;
    --border-color: rgba(255, 156, 0, 0.2);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --glow: 0 0 20px rgba(255, 156, 0, 0.4);
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--dark-bg);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection {
    background: var(--primary-color);
    color: var(--dark-bg);
}

/* ==========================================
   加载屏幕
   ========================================== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.loader-circle {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border: 4px solid rgba(255, 156, 0, 0.1);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ==========================================
   导航栏
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 16px 0;
    background: rgba(5, 21, 46, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(5, 21, 46, 0.95);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    width: 200px;
    height: auto;
    transition: transform 0.3s;
    display: flex;
    align-items: center;
}

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

.nav-logo-image {
    width: 200px;
    height: auto;
    display: block;
    transition: transform 0.3s;
}

.nav-logo:hover .nav-logo-image {
    transform: scale(1.05);
}

.logo-nova {
    color: var(--primary-color);
}

.logo-sight {
    color: var(--white);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 28px;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    position: relative;
    transition: color 0.3s;
}

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

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

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

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

.hamburger span {
    width: 22px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* 语言切换按钮 */
.lang-switcher {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255, 156, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--white);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.lang-switcher:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-2px);
}

.lang-switcher i {
    font-size: 16px;
}

/* ==========================================
   页面头部
   ========================================== */
.page-header {
    position: relative;
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 140px 36px 110px;
    overflow: hidden;
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--light-bg) 100%);
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.page-header::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 160px;
    background: linear-gradient(180deg, rgba(5, 21, 46, 0) 0%, rgba(10, 30, 63, 0.75) 55%, var(--light-bg) 100%);
    pointer-events: none;
}

.page-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--white), var(--text-gray));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    color: var(--text-gray);
    line-height: 1.6;
}

.page-header+.section {
    position: relative;
    margin-top: -70px;
    padding-top: calc(88px + 70px);
}

.page-header+.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 160px;
    background: linear-gradient(180deg, rgba(10, 30, 63, 0.85) 0%, rgba(10, 30, 63, 0) 100%);
    pointer-events: none;
    z-index: 0;
}

.page-header+.section>* {
    position: relative;
    z-index: 1;
}

/* ==========================================
   英雄区域
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 108px 36px 56px;
    overflow: hidden;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0;
    transition: opacity 1s ease-in;
}

.particles.active {
    opacity: 1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: float 20s infinite;
    opacity: 0.6;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    10% {
        opacity: 0.6;
    }

    90% {
        opacity: 0.6;
    }

    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 1000px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: rgba(255, 156, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 30px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards, glow 3s ease-in-out infinite;
    animation-delay: 2.8s, 3.6s;
}

/* Hero 区域延迟显示的元素 */
.hero-delay-1 {
    opacity: 0;
    animation: fadeInDown 0.8s ease-out forwards;
    animation-delay: 2.8s;
}

.hero-delay-2 {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
    animation-delay: 3.0s;
}

.hero-delay-3 {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
    animation-delay: 3.2s;
}

.hero-delay-4 {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
    animation-delay: 3.4s;
}

.hero-delay-5 {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
    animation-delay: 3.6s;
}

@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);
    }
}

.hero-badge i {
    color: var(--primary-color);
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 10px rgba(255, 156, 0, 0.2);
    }

    50% {
        box-shadow: 0 0 25px rgba(255, 156, 0, 0.5);
    }
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(54px, 9vw, 108px);
    font-weight: 900;
    margin-bottom: 18px;
    line-height: 1.08;
    position: relative;
}

/* LOGO 开屏动画容器 */
.logo-splash-container {
    position: relative;
    display: inline-block;
    min-height: 1em;
    min-width: 1em;
}

/* LOGO 文字 */
.logo-text {
    position: relative;
    z-index: 3;
    display: inline-block;
    color: var(--primary-color);
    filter: brightness(0);
    transform: scale(0.8);
    opacity: 0;
    animation: logoReveal 2.5s ease-out forwards;
    animation-delay: 0.3s;
    font-weight: 900;
    font-family: 'Orbitron', sans-serif;
    font-size: inherit;
}

/* LOGO 图片 */
.logo-image {
    position: relative;
    z-index: 3;
    display: inline-block;
    max-width: 100%;
    height: auto;
    filter: brightness(0);
    transform: scale(0.8);
    opacity: 0;
    animation: logoReveal 2.5s ease-out forwards;
    animation-delay: 0.3s;
}

/* LOGO 动画完成后应用渐变效果 */
.logo-text.animation-complete {
    background: linear-gradient(135deg, var(--primary-color) 0%, #ffb347 50%, var(--primary-color) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    /* 确保颜色不覆盖渐变 */
    animation: gradient 3s ease infinite;
    filter: none;
    /* 移除亮度滤镜 */
    opacity: 1;
    transform: scale(1);
}

/* LOGO 图片动画完成后 */
.logo-image.animation-complete {
    filter: none;
    /* 移除亮度滤镜 */
    opacity: 1;
    transform: scale(1);
}

/* 内联 LOGO（用于标题中） */
.inline-logo {
    display: inline-block;
    vertical-align: middle;
    height: 1.2em;
    width: auto;
    margin: 0 0.2em;
}

/* 光晕效果 */
.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle,
            rgba(255, 156, 0, 1) 0%,
            rgba(255, 156, 0, 0.8) 15%,
            rgba(255, 156, 0, 0.5) 30%,
            rgba(255, 156, 0, 0.2) 50%,
            rgba(255, 156, 0, 0.1) 70%,
            transparent 100%);
    z-index: 1;
    pointer-events: none;
    animation: glowExpand 2.2s ease-out forwards;
}

/* LOGO 显现动画 */
@keyframes logoReveal {
    0% {
        opacity: 0;
        transform: scale(0.8);
        filter: brightness(0) blur(10px);
        color: var(--primary-color);
    }

    20% {
        opacity: 0.3;
        filter: brightness(0.2) blur(8px);
        color: rgba(255, 156, 0, 0.2);
    }

    40% {
        opacity: 0.6;
        filter: brightness(0.5) blur(4px);
        color: rgba(255, 156, 0, 0.5);
    }

    60% {
        opacity: 0.85;
        transform: scale(1.05);
        filter: brightness(0.8) blur(2px);
        color: rgba(255, 156, 0, 0.8);
    }

    80% {
        opacity: 0.95;
        transform: scale(1.01);
        filter: brightness(0.95) blur(0px);
        color: rgba(255, 156, 0, 0.95);
    }

    100% {
        opacity: 1;
        transform: scale(1);
        filter: brightness(1) blur(0px);
        color: var(--primary-color);
    }
}

/* 光晕扩散动画 */
@keyframes glowExpand {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
        box-shadow: 0 0 0 rgba(255, 156, 0, 0);
    }

    20% {
        width: 200px;
        height: 200px;
        opacity: 1;
        box-shadow: 0 0 150px rgba(255, 156, 0, 0.8);
    }

    40% {
        width: 400px;
        height: 400px;
        opacity: 0.7;
        box-shadow: 0 0 200px rgba(255, 156, 0, 0.6);
    }

    60% {
        width: 600px;
        height: 600px;
        opacity: 0.4;
        box-shadow: 0 0 250px rgba(255, 156, 0, 0.3);
    }

    80% {
        width: 800px;
        height: 800px;
        opacity: 0.2;
        box-shadow: 0 0 300px rgba(255, 156, 0, 0.1);
    }

    100% {
        width: 1000px;
        height: 1000px;
        opacity: 0;
        box-shadow: 0 0 0 rgba(255, 156, 0, 0);
    }
}

/* LOGO 动画完成后，恢复渐变动画 */
.logo-text.animation-complete {
    animation: gradient 3s ease infinite;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, #ffb347 50%, var(--primary-color) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient 3s ease infinite;
}

@keyframes gradient {

    0%,
    100% {
        background-position: 0% center;
    }

    50% {
        background-position: 100% center;
    }
}

.hero-subtitle {
    font-size: clamp(22px, 3.8vw, 32px);
    font-weight: 300;
    margin-bottom: 18px;
    color: var(--text-gray);
}

.hero-description {
    font-size: clamp(16px, 1.8vw, 19px);
    line-height: 1.7;
    margin-bottom: 36px;
    color: var(--text-gray);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 52px;
}

.stats-section {
    position: relative;
    margin-top: -30px;
    padding: 70px 36px 64px;
    background: linear-gradient(180deg, rgba(5, 21, 46, 0) 0%, rgba(10, 30, 63, 0.92) 45%, var(--dark-bg) 100%);
    border-top: 1px solid rgba(255, 156, 0, 0.08);
    border-bottom: 1px solid rgba(255, 156, 0, 0.08);
    z-index: 1;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 140px;
    background: linear-gradient(180deg, rgba(5, 21, 46, 0.2) 0%, rgba(10, 30, 63, 0) 100%);
    pointer-events: none;
}

.stats-section .container {
    max-width: 960px;
    position: relative;
    z-index: 1;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn span {
    position: relative;
    z-index: 1;
}

.btn i {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    color: var(--dark-bg);
    border: none;
    box-shadow: 0 10px 30px rgba(255, 156, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 156, 0, 0.5);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

.hero-stats,
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
    max-width: 760px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(30px, 4.6vw, 44px);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 6px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-gray);
}

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

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    margin: 0 auto 10px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(15px);
    }
}

/* ==========================================
   快速链接区域
   ========================================== */
.quick-links-section {
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--light-bg) 100%);
}

.product-video-section {
    background: var(--light-bg);
}

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

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 20px;
    background: rgba(5, 21, 46, 0.3);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.quick-link-card {
    position: relative;
    padding: 32px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-decoration: none;
    color: var(--white);
    transition: all 0.3s;
    overflow: hidden;
}

.quick-link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.quick-link-card:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateY(-10px);
    box-shadow: var(--glow);
    border-color: var(--primary-color);
}

.quick-link-card:hover::before {
    opacity: 1;
}

.quick-link-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border-radius: 15px;
    margin-bottom: 16px;
    transition: transform 0.3s;
}

.quick-link-card:hover .quick-link-icon {
    transform: scale(1.1) rotate(5deg);
}

.quick-link-icon i {
    font-size: 32px;
    color: var(--dark-bg);
}

.quick-link-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.quick-link-card p {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.quick-link-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 156, 0, 0.2);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 16px;
    transition: all 0.3s;
    position: relative;
    z-index: 1;
}

.quick-link-card:hover .quick-link-arrow {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateX(5px);
}

/* ==========================================
   通用区域样式
   ========================================== */
.section {
    padding: 88px 36px;
    position: relative;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 7px 18px;
    background: rgba(255, 156, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(34px, 5.5vw, 50px);
    font-weight: 700;
    margin-bottom: 18px;
    background: linear-gradient(135deg, var(--white), var(--text-gray));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: clamp(15px, 1.8vw, 19px);
    color: var(--text-gray);
    max-width: 560px;
    margin: 0 auto;
}

/* ==========================================
   关于我们区域
   ========================================== */
.about-section {
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--light-bg) 100%);
}

.about-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.about-text {
    padding-right: 16px;
}

.about-subtitle {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 18px;
    margin-top: 36px;
}

.about-subtitle:first-child {
    margin-top: 0;
}

.about-paragraph {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.about-values {
    display: grid;
    gap: 20px;
    margin-top: 40px;
}

.value-item {
    display: flex;
    align-items: start;
    gap: 20px;
    padding: 18px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
}

.value-item:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateX(10px);
}

.value-item i {
    font-size: 32px;
    color: var(--primary-color);
    margin-top: 5px;
}

.value-item h4 {
    font-size: 19px;
    margin-bottom: 6px;
}

.value-item p {
    font-size: 13px;
    color: var(--text-gray);
}

.about-visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    width: 100%;
}

.visual-card {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.visual-image {
    width: 100%;
    height: 280px;
    overflow: hidden;
    position: relative;
}

.visual-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(5, 21, 46, 0.3) 0%, rgba(5, 21, 46, 0.5) 100%);
    z-index: 1;
    pointer-events: none;
}

.visual-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.75;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.visual-card:hover .visual-image img {
    transform: scale(1.1);
    opacity: 0.85;
}

.visual-content {
    padding: 32px;
    height: 280px;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 0 0 24px 24px;
    position: relative;
}

.visual-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1) 0%, rgba(255, 182, 71, 0.05) 100%);
    border-radius: 0 0 24px 24px;
    pointer-events: none;
    z-index: -1;
}

.visual-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(255, 156, 0, 0.2);
}

.visual-card:hover .visual-content {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

.visual-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border-radius: 18px;
    margin-bottom: 20px;
    box-shadow: 0 8px 16px rgba(255, 156, 0, 0.3);
    flex-shrink: 0;
}

.visual-icon i {
    font-size: 36px;
    color: var(--dark-bg);
}

.visual-card h4 {
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

.visual-card p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-gray);
    flex: 1;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-visual-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .visual-image {
        height: 240px;
    }

    .visual-content {
        padding: 24px;
        height: 260px;
    }
}

/* ==========================================
   团队区域
   ========================================== */
.team-section {
    background: var(--dark-bg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.team-card-wrapper {
    perspective: 1000px;
    height: 320px;
}

.team-card {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.team-card-wrapper:hover .team-card:not(.expanded) {
    transform: rotateY(180deg);
}

.team-card-wrapper .team-card.expanded {
    transform: rotateY(180deg) scale(1.3);
    z-index: 1000;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-left: -200px;
    margin-top: -160px;
    width: 400px;
    height: 320px;
    pointer-events: auto;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                top 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                left 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                width 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.team-card-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 21, 46, 0.8);
    backdrop-filter: blur(10px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.team-card-overlay.active {
    opacity: 1;
    visibility: visible;
}

.team-card-front,
.team-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 24px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.team-card-front::before,
.team-card-back::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1) 0%, rgba(255, 182, 71, 0.05) 100%);
    border-radius: 24px;
    pointer-events: none;
    z-index: -1;
}

.team-card-back {
    transform: rotateY(180deg);
    background: rgba(255, 255, 255, 0.1);
}

.team-card-wrapper:hover .team-card-back {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

.team-image {
    margin-bottom: 20px;
    width: 190px;
    height: 190px;
    margin: 0 auto;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 8px 16px rgba(255, 156, 0, 0.3);
}

.team-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.team-placeholder {
    width: 100px;
    height: 100px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 42px;
    color: var(--dark-bg);
    box-shadow: 0 8px 16px rgba(255, 156, 0, 0.3);
}

.team-info {
    width: 100%;
}

.team-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-white);
}

.team-role {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
    margin: 0;
}

.team-description {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-gray);
    margin: 0;
    padding: 0 16px;
    overflow-y: auto;
    max-height: 200px;
}

.team-card.expanded .team-description {
    max-height: 220px;
    font-size: 13px;
    padding: 0 20px;
}

.team-highlight {
    padding: 34px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-align: center;
}

.team-highlight h3 {
    font-size: 26px;
    margin-bottom: 26px;
    color: var(--primary-color);
}

.team-highlight h3 i {
    margin-right: 10px;
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.highlight-item {
    text-align: center;
}

.highlight-item i {
    font-size: 44px;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.highlight-item p {
    font-size: 15px;
    color: var(--text-gray);
}

/* ==========================================
   创新产品区域
   ========================================== */
.innovation-section {
    background: linear-gradient(180deg, var(--light-bg) 0%, var(--dark-bg) 100%);
}

.innovation-hero {
    margin-bottom: 60px;
}

.innovation-product {
    display: flex;
    justify-content: center;
}

.product-visual {
    width: 100%;
    max-width: 600px;
}

.product-video {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 20px;
    object-fit: cover;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
    display: block;
}

.product-video:hover {
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}

.product-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1), rgba(255, 156, 0, 0.05));
    border: 2px solid var(--border-color);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transition: all 0.3s;
}

.product-placeholder:hover {
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}

.product-placeholder i {
    font-size: 80px;
    color: var(--primary-color);
}

.product-placeholder p {
    font-size: 20px;
    color: var(--text-gray);
}

.innovation-description {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 60px;
}

.innovation-description h3 {
    font-size: 30px;
    margin-bottom: 18px;
    color: var(--primary-color);
}

.lead-text {
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-gray);
}

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

.feature-card {
    padding: 32px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s;
}

.feature-card:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateY(-10px);
    box-shadow: var(--glow);
}

.feature-icon {
    width: 62px;
    height: 62px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border-radius: 15px;
    margin-bottom: 16px;
}

.feature-icon i {
    font-size: 32px;
    color: var(--dark-bg);
}

.feature-card h4 {
    font-size: 21px;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-gray);
}

/* ==========================================
   创新产品轮播
   ========================================== */
.innovation-carousel-wrapper {
    position: relative;
    max-width: 1200px;
    margin: 0 auto 60px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.innovation-carousel {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.slide-caption {
    position: absolute;
    top: 30px;
    left: 30px;
    background: rgba(5, 21, 46, 0.85);
    backdrop-filter: blur(10px);
    padding: 20px 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 156, 0, 0.3);
    z-index: 2;
    max-width: 400px;
}

.slide-caption h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-family: 'Orbitron', sans-serif;
}

.slide-caption p {
    font-size: 16px;
    color: #b0b8c9;
    margin: 0;
    font-weight: 400;
}

.carousel-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 3;
    pointer-events: none;
}

.carousel-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(5, 21, 46, 0.8);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 156, 0, 0.5);
    color: var(--primary-color);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    pointer-events: all;
}

.carousel-btn:hover {
    background: rgba(255, 156, 0, 0.2);
    border-color: var(--primary-color);
    transform: scale(1.1);
    box-shadow: 0 5px 20px rgba(255, 156, 0, 0.4);
}

.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.indicator.active {
    background: var(--primary-color);
    border-color: rgba(255, 156, 0, 0.8);
    transform: scale(1.3);
    box-shadow: 0 0 15px rgba(255, 156, 0, 0.6);
}

.indicator:hover {
    background: rgba(255, 156, 0, 0.6);
    transform: scale(1.2);
}

.tech-specs {
    padding: 52px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
}

.tech-specs h3 {
    font-size: 30px;
    text-align: center;
    margin-bottom: 36px;
    color: var(--primary-color);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.spec-item {
    text-align: center;
    padding: 26px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
}

.spec-item:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: scale(1.05);
}

.spec-label {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 10px;
}

.spec-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ==========================================
   模型展示区域
   ========================================== */
/* ==========================================
   交互式相册展示区域
   ========================================== */
.gallery-showcase-section {
    background: linear-gradient(180deg, var(--dark-bg) 0%, rgba(5, 21, 46, 0.95) 100%);
    padding: 80px 0 120px;
    position: relative;
    overflow: hidden;
}

.gallery-showcase {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-canvas-container {
    position: relative;
    width: 100%;
    height: 400px;
    margin: 0 auto 60px;
    perspective: 4000px;
    perspective-origin: center center;
    overflow: visible;
}

.gallery-3d-carousel {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: grab;
    transform-origin: center center;
}

.gallery-3d-carousel:active {
    cursor: grabbing;
}

.gallery-3d-item {
    position: absolute;
    width: 220px;
    height: 220px;
    left: 50%;
    top: 50%;
    margin-left: -160px;
    margin-top: -210px;
    transform-style: preserve-3d;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
    backface-visibility: hidden;
    --rotate-angle: 0deg;
    transform: rotateY(var(--rotate-angle)) translateZ(800px) !important;
    z-index: calc(20 - var(--item-index, 0));
}

.gallery-3d-card {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
        filter 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform, opacity, filter;
}

.gallery-3d-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1) 0%, rgba(255, 182, 71, 0.05) 100%);
    border-radius: 24px;
    pointer-events: none;
    z-index: -1;
}

.gallery-3d-image {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.gallery-3d-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 3D旋转木马定位 - 20张图片，每张旋转18度（360/20），围绕中心点排列成环形 */
/* 使用CSS变量动态设置角度，通过JavaScript更新 */
/* 关键：先旋转再平移，这样图片会围绕中心点形成环形 */

/* 中心图片（索引0）最大，两侧逐渐缩小 */
.gallery-3d-item .gallery-3d-card {
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 根据距离中心的远近动态调整大小和透明度 */
/* 为每个索引设置初始角度 - 每张图片18度 */
/* z-index和样式由JavaScript根据当前中心位置动态更新 */
.gallery-3d-item[data-index="0"] {
    --rotate-angle: 0deg;
    transform: rotateY(0deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="1"] {
    --rotate-angle: 18deg;
    transform: rotateY(18deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="2"] {
    --rotate-angle: 36deg;
    transform: rotateY(36deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="3"] {
    --rotate-angle: 54deg;
    transform: rotateY(54deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="4"] {
    --rotate-angle: 72deg;
    transform: rotateY(72deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="5"] {
    --rotate-angle: 90deg;
    transform: rotateY(90deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="6"] {
    --rotate-angle: 108deg;
    transform: rotateY(108deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="7"] {
    --rotate-angle: 126deg;
    transform: rotateY(126deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="8"] {
    --rotate-angle: 144deg;
    transform: rotateY(144deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="9"] {
    --rotate-angle: 162deg;
    transform: rotateY(162deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="10"] {
    --rotate-angle: 180deg;
    transform: rotateY(180deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="11"] {
    --rotate-angle: 198deg;
    transform: rotateY(198deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="12"] {
    --rotate-angle: 216deg;
    transform: rotateY(216deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="13"] {
    --rotate-angle: 234deg;
    transform: rotateY(234deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="14"] {
    --rotate-angle: 252deg;
    transform: rotateY(252deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="15"] {
    --rotate-angle: 270deg;
    transform: rotateY(270deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="16"] {
    --rotate-angle: 288deg;
    transform: rotateY(288deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="17"] {
    --rotate-angle: 306deg;
    transform: rotateY(306deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="18"] {
    --rotate-angle: 324deg;
    transform: rotateY(324deg) translateZ(800px) !important;
}

.gallery-3d-item[data-index="19"] {
    --rotate-angle: 342deg;
    transform: rotateY(342deg) translateZ(800px) !important;
}

/* 根据角度计算距离中心的远近，动态调整大小和透明度 */
/* 样式由JavaScript动态更新，根据当前中心位置实时计算 */

/* 悬停效果 */
.gallery-3d-item:hover .gallery-3d-card {
    box-shadow: 0 30px 80px rgba(255, 156, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.gallery-3d-item:hover .gallery-3d-image img {
    transform: scale(1.05);
}

.gallery-controls {
    position: relative;
    z-index: 10;
    margin-top: -80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.gallery-control-buttons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.gallery-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 18px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.gallery-btn:hover {
    background: rgba(255, 156, 0, 0.2);
    border-color: var(--primary-color);
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(255, 156, 0, 0.3);
}

.gallery-btn:active {
    transform: scale(0.95);
}

.gallery-btn-play {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-color: var(--primary-color);
    font-size: 20px;
}

.gallery-btn-play:hover {
    background: #ffb347;
    box-shadow: 0 8px 25px rgba(255, 156, 0, 0.5);
}

.gallery-btn-play.playing i::before {
    content: "\f04c";
}

.gallery-description {
    max-width: 500px;
    text-align: center;
}

.gallery-current-desc {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-gray);
    transition: all 0.5s ease;
    opacity: 1;
    filter: blur(0);
}

.gallery-current-desc.fade {
    opacity: 0;
    filter: blur(10px);
}

.gallery-showcase-content {
    text-align: center;
    margin-top: 80px;
    padding: 0 20px;
}

.gallery-showcase-title {
    font-size: 48px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    line-height: 1.2;
}

.gallery-showcase-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .gallery-canvas-container {
        height: 600px;
        perspective: 3500px;
    }

    .gallery-3d-item {
        width: 280px;
        height: 380px;
        margin-left: -140px;
        margin-top: -190px;
    }

    .gallery-3d-item {
        transform: rotateY(var(--rotate-angle)) translateZ(600px) !important;
    }

    .gallery-showcase-title {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .gallery-showcase-section {
        padding: 60px 0 80px;
    }

    .gallery-canvas-container {
        height: 500px;
        perspective: 3000px;
        margin-bottom: 40px;
    }

    .gallery-3d-item {
        width: 240px;
        height: 320px;
        margin-left: -120px;
        margin-top: -160px;
    }

    .gallery-3d-item {
        transform: rotateY(var(--rotate-angle)) translateZ(450px) !important;
    }

    .gallery-controls {
        margin-top: -60px;
        gap: 20px;
    }

    .gallery-btn {
        width: 45px;
        height: 45px;
        font-size: 16px;
    }

    .gallery-btn-play {
        width: 55px;
        height: 55px;
        font-size: 18px;
    }

    .gallery-current-desc {
        font-size: 14px;
        padding: 0 20px;
    }

    .gallery-showcase-content {
        margin-top: 60px;
    }

    .gallery-showcase-title {
        font-size: 28px;
    }

    .gallery-showcase-subtitle {
        font-size: 16px;
    }
}

.gallery-section {
    background: var(--dark-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(5, 160px);
    gap: 20px;
    margin-bottom: 32px;
    justify-content: center;
}

.gallery-item {
    position: relative;
    aspect-ratio: 3 / 2.4;
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1), rgba(255, 156, 0, 0.05));
    border: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s;
}

.gallery-item:hover .gallery-placeholder {
    border-color: var(--primary-color);
}

.gallery-placeholder i {
    font-size: 48px;
    color: var(--primary-color);
}

.gallery-placeholder p {
    font-size: 14px;
    color: var(--text-gray);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(5, 21, 46, 0.95) 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    padding: 16px 20px 20px;
    opacity: 0;
    transition: opacity 0.3s;
    box-sizing: border-box;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay h4 {
    font-size: 18px;
    margin-bottom: 8px;
    line-height: 1.4;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.gallery-overlay p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.5;
    word-wrap: break-word;
    overflow-wrap: break-word;
    margin: 0;
}

.gallery-note {
    text-align: center;
    padding: 26px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.gallery-note i {
    font-size: 24px;
    color: var(--primary-color);
}

.gallery-note p {
    font-size: 16px;
    color: var(--text-gray);
}

/* ==========================================
   社会影响区域
   ========================================== */
.impact-section {
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--light-bg) 100%);
}

.impact-stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-bottom: 52px;
}

.impact-stat {
    text-align: center;
    padding: 34px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s;
}

.impact-stat:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateY(-10px);
    box-shadow: var(--glow);
}

.impact-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 52px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 14px;
}

.impact-label {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 14px;
}

.impact-desc {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
}

.impact-areas {
    display: grid;
    gap: 32px;
    margin-bottom: 52px;
}

.impact-area {
    display: flex;
    gap: 30px;
    padding: 32px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s;
}

.impact-area:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateX(20px);
}

.area-icon {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border-radius: 20px;
}

.area-icon i {
    font-size: 36px;
    color: var(--dark-bg);
}

.area-content h3 {
    font-size: 23px;
    margin-bottom: 12px;
}

.area-content p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-gray);
}

.impact-quote {
    text-align: center;
    padding: 52px;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1), rgba(255, 156, 0, 0.05));
    border: 2px solid var(--border-color);
    border-radius: 20px;
    position: relative;
}

.impact-quote i {
    font-size: 48px;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: 20px;
}

.quote-text {
    font-size: 22px;
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.quote-author {
    font-size: 15px;
    color: var(--primary-color);
    font-weight: 600;
}

/* ==========================================
   品牌区域
   ========================================== */
.brand-section {
    background: var(--dark-bg);
}

.brand-identity {
    margin-bottom: 60px;
}

.brand-logo-showcase {
    text-align: center;
    padding: 80px 40px;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1), rgba(255, 156, 0, 0.05));
    border: 2px solid var(--border-color);
    border-radius: 20px;
}

.logo-main {
    display: inline-block;
}

.brand-logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 72px;
    font-weight: 900;
    margin-bottom: 20px;
}

.brand-tagline {
    font-size: 24px;
    color: var(--text-gray);
}

.brand-colors h3,
.brand-elements h3,
.brand-applications h3 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.color-palette {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.color-item {
    text-align: center;
}

.color-swatch {
    width: 100%;
    height: 150px;
    border-radius: 20px;
    margin-bottom: 20px;
    transition: transform 0.3s;
}

.color-item:hover .color-swatch {
    transform: scale(1.05);
}

.color-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.color-hex {
    font-family: 'Courier New', monospace;
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.color-desc {
    font-size: 14px;
    color: var(--text-gray);
}

.elements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.element-card {
    padding: 40px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s;
}

.element-card:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateY(-10px);
}

.element-card>i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: block;
}

.element-card h4 {
    font-size: 24px;
    margin-bottom: 20px;
}

.font-display {
    font-size: 28px;
    font-weight: 600;
    margin: 15px 0 5px;
}

.font-desc {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 15px;
}

.icon-samples {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

.icon-samples i {
    font-size: 32px;
    color: var(--primary-color);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.app-item {
    padding: 30px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}

.app-item:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: scale(1.05);
}

.app-item i {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.app-item p {
    font-size: 16px;
    color: var(--text-gray);
}

/* ==========================================
   时间线区域
   ========================================== */
.timeline-section {
    background: linear-gradient(180deg, var(--light-bg) 0%, var(--dark-bg) 100%);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 36px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 52px;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    padding-right: 60px;
    text-align: right;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 60px;
    text-align: left;
}

.timeline-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 4px solid var(--dark-bg);
    border-radius: 50%;
    top: 0;
    z-index: 1;
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -10px;
}

.timeline-content {
    padding: 26px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s;
}

.timeline-item:hover .timeline-content {
    background: rgba(255, 156, 0, 0.1);
    transform: scale(1.05);
    box-shadow: var(--glow);
}

.timeline-item.active .timeline-content {
    background: rgba(255, 156, 0, 0.15);
    border-color: var(--primary-color);
}

.timeline-item.active .timeline-dot {
    width: 24px;
    height: 24px;
    box-shadow: 0 0 20px var(--primary-color);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        box-shadow: 0 0 20px var(--primary-color);
    }

    50% {
        box-shadow: 0 0 40px var(--primary-color);
    }
}

.timeline-date {
    font-family: 'Orbitron', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-content h4 {
    font-size: 21px;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==========================================
   联系区域
   ========================================== */
.contact-section {
    background: var(--dark-bg);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 52px;
}

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

.contact-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s;
}

.contact-item:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateX(10px);
}

.contact-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border-radius: 12px;
}

.contact-icon i {
    font-size: 24px;
    color: var(--dark-bg);
}

.contact-details h4 {
    font-size: 19px;
    margin-bottom: 8px;
}

.contact-details p {
    font-size: 15px;
    color: var(--text-gray);
    margin-bottom: 5px;
}

.contact-note {
    font-size: 14px !important;
    color: var(--text-gray);
}

.social-links {
    padding: 28px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
}

.social-links h4 {
    font-size: 19px;
    margin-bottom: 18px;
}

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

.social-icon {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 156, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--primary-color);
    font-size: 24px;
    transition: all 0.3s;
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-5px);
}

.contact-form-wrapper {
    padding: 34px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
}

.contact-form {
    display: grid;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-gray);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--white);
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 156, 0, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    margin-top: 10px;
    width: 100%;
    cursor: pointer;
    border: none;
    font-family: 'Inter', sans-serif;
}

.partners {
    text-align: center;
    padding: 52px;
    background: linear-gradient(135deg, rgba(255, 156, 0, 0.1), rgba(255, 156, 0, 0.05));
    border: 2px solid var(--border-color);
    border-radius: 20px;
}

.partners h3 {
    font-size: 30px;
    margin-bottom: 18px;
    color: var(--primary-color);
}

.partners-desc {
    font-size: 15px;
    color: var(--text-gray);
    margin-bottom: 36px;
    max-width: 660px;
    margin-left: auto;
    margin-right: auto;
}

.partner-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 26px;
}

.partner-type {
    padding: 26px;
    background: rgba(255, 156, 0, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
}

.partner-type:hover {
    background: rgba(255, 156, 0, 0.1);
    transform: translateY(-5px);
}

.partner-type i {
    font-size: 44px;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.partner-type p {
    font-size: 16px;
    color: var(--text-gray);
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: var(--light-bg);
    border-top: 1px solid var(--border-color);
    padding: 64px 36px 34px;
}

.footer-content {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    gap: 40px;
    margin-bottom: 44px;
    align-items: start;
}

.footer-brand {
    padding-right: 20px;
}

.footer-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 27px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-tagline {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 15px;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.8;
}

.footer-column h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, minmax(140px, 1fr));
    gap: 28px;
}

.footer-bottom {
    padding-top: 22px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom-text {
    flex: 1;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 5px;
}

.footer-note {
    font-size: 12px !important;
}

.footer-qr {
    flex-shrink: 0;
}

.footer-qr .qr-image {
    width: 80px;
    height: 80px;
    object-fit: contain;
    display: block;
}

/* ==========================================
   返回顶部按钮
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--primary-color), #ffb347);
    border: none;
    border-radius: 50%;
    color: var(--dark-bg);
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
    box-shadow: 0 5px 20px rgba(255, 156, 0, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 156, 0, 0.6);
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1280px) {
    .nav-container {
        padding: 0 28px;
    }

    .nav-menu {
        gap: 24px;
    }

    .gallery-grid {
        grid-template-columns: repeat(4, 160px);
        gap: 18px;
        justify-content: center;
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        flex-direction: column;
        background: rgba(5, 21, 46, 0.98);
        width: 100%;
        padding: 40px;
        gap: 20px;
        transition: left 0.3s;
        border-bottom: 1px solid var(--border-color);
    }

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

    .hamburger {
        display: flex;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: repeat(2, minmax(160px, 1fr));
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 80px !important;
        padding-right: 0 !important;
        text-align: left !important;
        margin-left: 0 !important;
    }

    .timeline-dot {
        left: 21px !important;
    }

    .page-header {
        padding: 130px 28px 100px;
    }

    .page-header::after,
    .page-header+.section::before {
        height: 140px;
    }

    .page-header+.section {
        margin-top: -60px;
        padding-top: calc(88px + 60px);
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 160px);
        gap: 18px;
        justify-content: center;
    }

    .stats-section {
        margin-top: -26px;
        padding: 60px 28px 56px;
    }

    .stats-section::before {
        height: 120px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 20px;
    }

    .video-wrapper {
        border-radius: 16px;
    }

    .nav-container {
        padding: 0 20px;
    }

    .hero {
        padding: 100px 20px 40px;
    }

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

    .features-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .team-card-wrapper {
        height: 300px;
    }

    .team-card-wrapper .team-card.expanded {
        width: 90vw;
        max-width: 400px;
        height: auto;
        min-height: 300px;
        max-height: 80vh;
        margin-left: -45vw;
        margin-top: -40vh;
    }

    .team-card-front,
    .team-card-back {
        padding: 24px;
    }

    .team-image {
        width: 80px;
        height: 80px;
    }

    .team-placeholder {
        width: 80px;
        height: 80px;
        font-size: 36px;
    }

    .team-card.expanded .team-description {
        max-height: 50vh;
        font-size: 12px;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 150px);
        gap: 16px;
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer {
        padding: 60px 24px 30px;
    }

    .footer-bottom-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-bottom-text {
        text-align: center;
    }

    .innovation-carousel {
        height: 400px;
    }

    .slide-caption {
        top: 20px;
        left: 20px;
        padding: 15px 20px;
        max-width: calc(100% - 40px);
    }

    .slide-caption h3 {
        font-size: 20px;
    }

    .slide-caption p {
        font-size: 14px;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .carousel-indicators {
        bottom: 20px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
    }

    .page-header {
        padding: 120px 24px 90px;
    }

    .page-header::after,
    .page-header+.section::before {
        height: 120px;
    }

    .page-header+.section {
        margin-top: -50px;
        padding-top: calc(60px + 50px);
    }

    .stats-section {
        margin-top: -20px;
        padding: 52px 20px 48px;
    }

    .stats-section::before {
        height: 100px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }

    .stat-item {
        padding: 20px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .page-header {
        padding: 110px 20px 80px;
    }

    .page-header::after,
    .page-header+.section::before {
        height: 100px;
    }

    .page-header+.section {
        margin-top: -40px;
        padding-top: calc(60px + 40px);
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        justify-content: center;
    }

    .stats-section {
        margin-top: -16px;
        padding: 46px 18px 40px;
    }

    .stats-section::before {
        height: 80px;
    }

    .video-wrapper {
        border-radius: 12px;
    }

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