/* ========================================
   科技风格网页设计 - 主样式表
   ======================================== */

/* CSS 变量定义 */
:root {
    /* 主色调 - 更亮更蓝 */
    --primary-dark: #001428;
    --primary-blue: #002952;
    --accent-cyan: #00e5ff;
    --accent-blue: #0088ff;
    --accent-light: #00c8ff;
    --glow-cyan: rgba(0, 229, 255, 0.6);
    --glow-blue: rgba(0, 136, 255, 0.5);
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-muted: rgba(255, 255, 255, 0.45);
    
    /* 渐变 - 更亮的蓝色 */
    --gradient-main: linear-gradient(180deg, #001833 0%, #003366 40%, #004488 100%);
    --gradient-accent: linear-gradient(90deg, #00e5ff, #0088ff);
    --gradient-glow: radial-gradient(circle, rgba(0, 229, 255, 0.35) 0%, transparent 70%);
    
    /* 字体 */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
    
    /* 间距 */
    --header-height: 80px;
}

/* 重置样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: url('QQ20260208-171559.png') no-repeat center center fixed;
    background-size: cover;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ========================================
   背景效果
   ======================================== */

/* 粒子容器 */
.particle-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--accent-cyan);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 8s infinite;
}

@keyframes particleFloat {
    0%, 100% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(1);
    }
}

/* 网格覆盖层 - 更淡 */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 229, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
    z-index: 2;
}

/* 山脉剪影背景 - 已隐藏 */
.mountain-bg {
    display: none;
}

/* 山脉 SVG 容器 */
.mountain-svg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
}

/* 远山 - 最模糊最淡 */
.mountain-layer-1 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: 
        linear-gradient(180deg, rgba(0, 100, 180, 0.25) 0%, rgba(0, 60, 140, 0.4) 100%);
    clip-path: polygon(
        0% 100%,
        0% 75%,
        3% 70%,
        6% 58%,
        10% 65%,
        14% 52%,
        18% 60%,
        22% 48%,
        26% 55%,
        30% 42%,
        34% 50%,
        38% 38%,
        42% 46%,
        46% 35%,
        50% 30%,
        54% 38%,
        58% 32%,
        62% 42%,
        66% 35%,
        70% 45%,
        74% 38%,
        78% 50%,
        82% 42%,
        86% 55%,
        90% 48%,
        94% 60%,
        98% 52%,
        100% 58%,
        100% 100%
    );
    filter: blur(12px);
    opacity: 0.5;
}

/* 中山 */
.mountain-layer-2 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 42%;
    background: linear-gradient(180deg, rgba(0, 80, 160, 0.35) 0%, rgba(0, 50, 120, 0.55) 100%);
    clip-path: polygon(
        0% 100%,
        0% 82%,
        4% 75%,
        8% 62%,
        12% 70%,
        16% 55%,
        20% 65%,
        24% 50%,
        28% 60%,
        32% 45%,
        36% 55%,
        40% 42%,
        44% 52%,
        48% 38%,
        52% 48%,
        56% 35%,
        60% 45%,
        64% 38%,
        68% 50%,
        72% 42%,
        76% 55%,
        80% 48%,
        84% 60%,
        88% 52%,
        92% 65%,
        96% 58%,
        100% 68%,
        100% 100%
    );
    filter: blur(6px);
    opacity: 0.6;
}

/* 近山 - 最清晰 */
.mountain-layer-3 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 35%;
    background: linear-gradient(180deg, rgba(0, 70, 150, 0.45) 0%, rgba(0, 45, 100, 0.7) 100%);
    clip-path: polygon(
        0% 100%,
        0% 88%,
        5% 80%,
        10% 68%,
        15% 75%,
        20% 60%,
        25% 70%,
        30% 55%,
        35% 65%,
        40% 50%,
        45% 60%,
        50% 48%,
        55% 58%,
        60% 45%,
        65% 55%,
        70% 48%,
        75% 60%,
        80% 52%,
        85% 65%,
        90% 58%,
        95% 72%,
        100% 65%,
        100% 100%
    );
    filter: blur(2px);
    opacity: 0.7;
}

/* 山脉光晕效果 */
.mountain-glow {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 140%;
    height: 50%;
    background: radial-gradient(ellipse at center bottom, 
        rgba(0, 200, 255, 0.2) 0%, 
        rgba(0, 150, 220, 0.12) 30%, 
        rgba(0, 100, 180, 0.05) 60%,
        transparent 80%);
    filter: blur(40px);
    pointer-events: none;
}

/* 山顶光线效果 */
.mountain-highlight {
    position: absolute;
    bottom: 25%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 30%;
    background: radial-gradient(ellipse at center, 
        rgba(0, 220, 255, 0.08) 0%, 
        transparent 60%);
    filter: blur(20px);
}

/* 光晕效果 */
.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}

.glow-orb-1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(0, 180, 255, 0.2) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation: orbFloat 15s ease-in-out infinite;
}

.glow-orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 136, 255, 0.18) 0%, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation: orbFloat 18s ease-in-out infinite reverse;
}

.glow-orb-3 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 200, 255, 0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: orbPulse 10s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, 20px);
    }
}

@keyframes orbPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.8;
    }
}

/* ========================================
   头部导航
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(0, 10, 26, 0.95) 0%, rgba(0, 10, 26, 0) 100%);
    backdrop-filter: blur(10px);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    position: relative;
}

.logo-img-left {
    height: 65px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo-svg {
    width: 100%;
    height: 100%;
    animation: logoRotate 20s linear infinite;
}

@keyframes logoRotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.logo-text {
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

/* 导航菜单 */
.nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 22px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
    color: var(--text-primary);
}

.nav-number {
    font-family: var(--font-display);
    font-size: 10px;
    color: var(--accent-cyan);
    opacity: 0;
    transform: translateY(-5px);
    transition: all 0.3s ease;
}

.nav-item:hover .nav-number,
.nav-item.active .nav-number {
    opacity: 1;
    transform: translateY(0);
}

.nav-text {
    font-size: 17px;
    font-weight: 500;
    white-space: nowrap;
}

.nav-line {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transform: translateX(-50%);
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--glow-cyan);
}

.nav-item:hover .nav-line,
.nav-item.active .nav-line {
    width: 80%;
}

/* 头部操作按钮 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-login {
    padding: 8px 24px;
    background: transparent;
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-login:hover {
    color: var(--primary-dark);
    border-color: transparent;
}

.btn-login:hover::before {
    left: 0;
}

.btn-search {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 50%;
}

.btn-search:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px var(--glow-cyan);
}

/* ========================================
   主视觉区域
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--header-height) 40px 40px;
    padding-bottom: 80px;
    z-index: 10;
    overflow: hidden;
}

/* 3D 球体效果 */
.sphere-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    z-index: 5;
}

.sphere {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, 
        rgba(0, 212, 255, 0.1) 0%, 
        rgba(0, 102, 255, 0.05) 50%, 
        transparent 70%);
    box-shadow: 
        inset 0 0 60px rgba(0, 212, 255, 0.1),
        0 0 100px rgba(0, 212, 255, 0.2);
    animation: spherePulse 8s ease-in-out infinite;
}

.sphere-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 15px,
            rgba(0, 212, 255, 0.1) 15px,
            rgba(0, 212, 255, 0.1) 16px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 15px,
            rgba(0, 212, 255, 0.1) 15px,
            rgba(0, 212, 255, 0.1) 16px
        );
    animation: sphereRotate 30s linear infinite;
    opacity: 0.5;
}

.sphere-glow {
    position: absolute;
    top: -20%;
    left: -20%;
    width: 140%;
    height: 140%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 60%);
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes spherePulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
    }
}

@keyframes sphereRotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* 轨道 */
.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.orbit-1 {
    width: 350px;
    height: 350px;
    animation: orbitRotate 20s linear infinite;
}

.orbit-2 {
    width: 420px;
    height: 420px;
    animation: orbitRotate 25s linear infinite reverse;
}

.orbit-3 {
    width: 480px;
    height: 480px;
    animation: orbitRotate 30s linear infinite;
}

@keyframes orbitRotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* 数据点 */
.data-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--glow-cyan);
}

.data-point-1 {
    top: 20%;
    left: 60%;
    animation: dataFloat 3s ease-in-out infinite;
}

.data-point-2 {
    top: 70%;
    left: 25%;
    animation: dataFloat 4s ease-in-out infinite 1s;
}

.data-point-3 {
    top: 40%;
    left: 80%;
    animation: dataFloat 3.5s ease-in-out infinite 0.5s;
}

@keyframes dataFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    50% {
        transform: translateY(-10px) scale(1.2);
        opacity: 0.7;
    }
}

/* 波浪效果 */
.wave-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    overflow: hidden;
    z-index: 6;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
}

.wave-1 {
    animation: waveMove 12s linear infinite;
    opacity: 0.8;
}

.wave-2 {
    animation: waveMove 15s linear infinite reverse;
    opacity: 0.6;
}

.wave-3 {
    animation: waveMove 18s linear infinite;
    opacity: 0.4;
}

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

/* 主内容 */
.hero-content {
    position: relative;
    z-index: 20;
    text-align: center;
    max-width: 1100px;
}

.hero-title {
    margin-bottom: 20px;
}

.title-line {
    display: block;
    font-size: 64px;
    font-weight: 700;
    letter-spacing: 8px;
    text-shadow: 0 0 40px var(--glow-cyan);
    animation: titleGlow 3s ease-in-out infinite;
}

.title-line-1 {
    animation-delay: 0s;
}

.title-line-2 {
    animation-delay: 0.5s;
}

@keyframes titleGlow {
    0%, 100% {
        text-shadow: 0 0 40px var(--glow-cyan);
    }
    50% {
        text-shadow: 0 0 60px var(--glow-cyan), 0 0 80px var(--glow-blue);
    }
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 4px;
    margin-bottom: 40px;
    text-transform: uppercase;
}

/* 统计数据 */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
}

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

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    color: var(--accent-cyan);
    text-shadow: 0 0 30px var(--glow-cyan);
}

.stat-number::after {
    content: '+';
    font-size: 24px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background: linear-gradient(180deg, transparent, var(--accent-cyan), transparent);
}

/* 按钮 */
.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background: var(--gradient-accent);
    color: var(--primary-dark);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary:hover {
    box-shadow: 0 0 30px var(--glow-cyan), 0 0 60px var(--glow-blue);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 16px 40px;
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px var(--glow-cyan);
}

/* 侧边装饰 */
.side-decoration {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    z-index: 15;
}

.side-decoration.left {
    left: 40px;
}

.side-decoration.right {
    right: 40px;
}

.deco-line {
    width: 1px;
    height: 100px;
    background: linear-gradient(180deg, transparent, var(--accent-cyan), transparent);
}

.deco-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--glow-cyan);
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }
}

.deco-text {
    font-family: var(--font-display);
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 3px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: 75px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 20;
    animation: scrollBounce 2s ease-in-out 5, scrollFadeOut 1s ease-out 10s forwards;
}

@keyframes scrollBounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

@keyframes scrollFadeOut {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--accent-cyan);
    border-radius: 12px;
    position: relative;
}

.wheel {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 2px;
    animation: wheelScroll 1.5s ease-in-out infinite;
}

@keyframes wheelScroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

.scroll-indicator span {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 2px;
}

/* 浮动导航 */
.floating-nav {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 100;
}

.floating-nav-item {
    width: 12px;
    height: 12px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.floating-nav-item:hover {
    border-color: var(--accent-cyan);
}

.floating-nav-item.active {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 15px var(--glow-cyan);
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1200px) {
    .nav-item {
        padding: 8px 10px;
    }
    
    .nav-text {
        font-size: 12px;
    }
    
    .title-line {
        font-size: 48px;
        letter-spacing: 4px;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 20px;
    }
    
    .nav {
        display: none;
    }
    
    .sphere-container {
        width: 400px;
        height: 400px;
    }
    
    .sphere {
        width: 250px;
        height: 250px;
    }
    
    .orbit-1 { width: 300px; height: 300px; }
    .orbit-2 { width: 350px; height: 350px; }
    .orbit-3 { width: 400px; height: 400px; }
    
    .title-line {
        font-size: 40px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .hero-stats {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .side-decoration {
        display: none;
    }
    
    .title-line {
        font-size: 32px;
        letter-spacing: 2px;
    }
    
    .hero-subtitle {
        font-size: 12px;
        letter-spacing: 2px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .stat-divider {
        width: 60px;
        height: 1px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .floating-nav {
        display: none;
    }
}

/* ========================================
   动画入场效果
   ======================================== */

.hero-content {
    animation: fadeInUp 1s ease-out;
}

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

.sphere-container {
    animation: fadeIn 1.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.header {
    animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   通用区域样式
   ======================================== */

.section {
    position: relative;
    padding: 100px 0;
    z-index: 10;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
}

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

.section-number {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--accent-cyan);
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 0 30px var(--glow-cyan);
}

.section-subtitle {
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.section-line {
    width: 80px;
    height: 3px;
    background: var(--gradient-accent);
    margin: 20px auto 0;
    border-radius: 2px;
    box-shadow: 0 0 15px var(--glow-cyan);
}

/* ========================================
   视频展示区域
   ======================================== */

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

.video-card {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
}

.video-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.video-card-main {
    grid-column: 1;
    grid-row: 1 / 3;
}

.video-thumbnail {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, rgba(0, 60, 120, 0.6), rgba(0, 30, 60, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.video-card-main .video-thumbnail {
    aspect-ratio: 16 / 10;
}

.video-placeholder {
    width: 80px;
    height: 80px;
    border: 2px solid var(--accent-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.video-placeholder svg {
    width: 30px;
    height: 30px;
    color: var(--accent-cyan);
    margin-left: 5px;
}

.video-card:hover .video-placeholder {
    background: var(--accent-cyan);
    transform: scale(1.1);
}

.video-card:hover .video-placeholder svg {
    color: var(--primary-dark);
}

.video-overlay {
    position: absolute;
    bottom: 10px;
    right: 10px;
}

.video-duration {
    background: rgba(0, 0, 0, 0.7);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-family: var(--font-display);
}

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.video-card-main .video-title {
    font-size: 22px;
}

.video-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.video-meta {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    font-size: 12px;
    color: var(--text-muted);
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========================================
   成果简介区域
   ======================================== */

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.intro-block {
    margin-bottom: 30px;
    padding: 25px;
    background: rgba(0, 40, 80, 0.3);
    border-left: 3px solid var(--accent-cyan);
    border-radius: 0 8px 8px 0;
}

.intro-block h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--accent-cyan);
}

.intro-block p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.intro-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.feature-card {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.15);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    color: var(--accent-cyan);
}

.feature-card h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   成果申报书区域
   ======================================== */

.document-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.document-card {
    display: flex;
    align-items: center;
    gap: 25px;
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 25px 30px;
    transition: all 0.3s ease;
}

.document-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.15);
}

.document-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.document-icon svg {
    width: 30px;
    height: 30px;
    color: var(--accent-cyan);
}

.document-info {
    flex: 1;
}

.document-info h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.document-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.document-meta {
    display: flex;
    gap: 20px;
    font-size: 12px;
    color: var(--text-muted);
}

.btn-download {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan);
    font-size: 14px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-download svg {
    width: 18px;
    height: 18px;
}

.btn-download:hover {
    background: var(--accent-cyan);
    color: var(--primary-dark);
}

/* ========================================
   教学资源区域
   ======================================== */

.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.resource-card {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 35px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.resource-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.resource-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(0, 102, 255, 0.15));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.resource-card:hover .resource-icon {
    background: var(--accent-cyan);
}

.resource-icon svg {
    width: 32px;
    height: 32px;
    color: var(--accent-cyan);
    transition: all 0.3s ease;
}

.resource-card:hover .resource-icon svg {
    color: var(--primary-dark);
}

.resource-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.resource-card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.resource-count {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    font-size: 12px;
    color: var(--accent-cyan);
}

/* ========================================
   荣誉表彰区域
   ======================================== */

.honors-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.honors-timeline {
    position: relative;
}

.honors-timeline::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-cyan), rgba(0, 212, 255, 0.2));
}

.timeline-item {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
}

.timeline-year {
    width: 60px;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-cyan);
    text-align: right;
    flex-shrink: 0;
    position: relative;
}

.timeline-year::after {
    content: '';
    position: absolute;
    right: -36px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--glow-cyan);
}

.timeline-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.honor-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.honor-card:hover {
    border-color: var(--accent-cyan);
    transform: translateX(10px);
}

.honor-badge {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.honor-badge svg {
    width: 28px;
    height: 28px;
}

.honor-badge.gold {
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #8B6914;
}

.honor-badge.silver {
    background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
    color: #505050;
}

.honor-badge.bronze {
    background: linear-gradient(135deg, #cd7f32, #a0522d);
    color: #5c3317;
}

.honor-info h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.honor-info p {
    font-size: 13px;
    color: var(--text-muted);
}

.honors-stats {
    display: flex;
    flex-direction: column;
    gap: 25px;
    padding: 30px;
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    height: fit-content;
}

.honor-stat {
    text-align: center;
    padding: 20px;
    background: rgba(0, 60, 120, 0.3);
    border-radius: 8px;
}

.honor-stat .stat-num {
    display: block;
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    color: var(--accent-cyan);
    text-shadow: 0 0 20px var(--glow-cyan);
}

.honor-stat .stat-text {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========================================
   推广应用区域
   ======================================== */

.promotion-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.map-container {
    position: relative;
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 40px;
    min-height: 400px;
}

.map-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
}

.map-placeholder svg {
    width: 150px;
    height: 150px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.map-dots .map-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--glow-cyan);
    animation: dotPulse 2s ease-in-out infinite;
}

.map-dots .map-dot:nth-child(2) { animation-delay: 0.3s; }
.map-dots .map-dot:nth-child(3) { animation-delay: 0.6s; }
.map-dots .map-dot:nth-child(4) { animation-delay: 0.9s; }
.map-dots .map-dot:nth-child(5) { animation-delay: 1.2s; }
.map-dots .map-dot:nth-child(6) { animation-delay: 1.5s; }

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

.promotion-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.promo-stat {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
}

.promo-stat-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-cyan);
    text-shadow: 0 0 15px var(--glow-cyan);
}

.promo-stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.promotion-list {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 30px;
}

.promotion-list h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--accent-cyan);
}

.partner-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.partner-tag {
    padding: 8px 16px;
    background: rgba(0, 60, 120, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.partner-tag:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* ========================================
   成果评价区域
   ======================================== */

.evaluation-content {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.evaluation-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.evaluation-card {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
}

.evaluation-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.15);
}

.evaluator-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.evaluator-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.evaluator-avatar svg {
    width: 26px;
    height: 26px;
    color: var(--accent-cyan);
}

.evaluator-detail h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.evaluator-detail span {
    font-size: 12px;
    color: var(--text-muted);
}

.evaluation-text {
    margin-bottom: 20px;
}

.evaluation-text p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    font-style: italic;
}

.evaluation-rating {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.rating-stars {
    display: flex;
    gap: 4px;
}

.rating-stars svg {
    width: 18px;
    height: 18px;
    color: #ffd700;
}

.evaluation-rating > span {
    font-size: 13px;
    color: var(--accent-cyan);
    font-weight: 500;
}

.evaluation-summary {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 40px;
    background: rgba(0, 40, 80, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
}

.summary-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.summary-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(0, 102, 255, 0.15));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.summary-icon svg {
    width: 30px;
    height: 30px;
    color: var(--accent-cyan);
}

.summary-text {
    display: flex;
    flex-direction: column;
}

.summary-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-cyan);
    text-shadow: 0 0 15px var(--glow-cyan);
}

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

/* ========================================
   媒体聚焦区域
   ======================================== */

.media-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.media-card {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
}

.media-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.15);
}

.media-card-featured {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
}

.media-source {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.15);
    border-radius: 4px;
    font-size: 12px;
    color: var(--accent-cyan);
    margin-bottom: 15px;
    width: fit-content;
}

.media-card h3 {
    font-size: 16px;
    margin-bottom: 10px;
    line-height: 1.5;
}

.media-card-featured h3 {
    font-size: 22px;
}

.media-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.media-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    font-size: 12px;
    color: var(--text-muted);
}

.media-link {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: all 0.3s ease;
}

.media-link:hover {
    text-shadow: 0 0 10px var(--glow-cyan);
}

/* ========================================
   页脚区域
   ======================================== */

.footer {
    position: relative;
    background: rgba(0, 15, 35, 0.9);
    border-top: 1px solid rgba(0, 212, 255, 0.2);
    z-index: 10;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-logo {
    width: 60px;
    height: 60px;
}

.footer-logo-svg {
    width: 100%;
    height: 100%;
}

.footer-info h3 {
    font-size: 18px;
    margin-bottom: 5px;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-info p {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    font-size: 14px;
    margin-bottom: 20px;
    color: var(--accent-cyan);
}

.footer-column a,
.footer-column p {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

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

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 15px var(--glow-cyan);
}

/* ========================================
   响应式 - 新增区域
   ======================================== */

@media (max-width: 1200px) {
    .section-container {
        padding: 0 40px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .video-card-main {
        grid-column: 1;
        grid-row: auto;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .honors-content {
        grid-template-columns: 1fr;
    }
    
    .promotion-content {
        grid-template-columns: 1fr;
    }
    
    .media-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .media-card-featured {
        grid-column: 1 / -1;
        grid-row: auto;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section-container {
        padding: 0 20px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .resources-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .intro-features {
        grid-template-columns: 1fr;
    }
    
    .promotion-stats {
        grid-template-columns: 1fr;
    }
    
    .media-grid {
        grid-template-columns: 1fr;
    }
    
    .evaluation-cards {
        grid-template-columns: 1fr;
    }
    
    .evaluation-summary {
        flex-direction: column;
        gap: 30px;
        padding: 30px;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .document-card {
        flex-direction: column;
        text-align: center;
    }
    
    .honors-timeline::before {
        left: 20px;
    }
    
    .timeline-year {
        width: 40px;
        font-size: 14px;
    }
    
    .timeline-year::after {
        right: -26px;
        width: 8px;
        height: 8px;
    }
}

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

/* ========================================
   精简版页脚样式
   ======================================== */
.footer-mini {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 10, 26, 0.7);
    border-top: 1px solid rgba(0, 212, 255, 0.15);
    z-index: 100;
}
.footer-mini .footer-content {
    padding: 15px 60px;
}
.footer-mini .footer-bottom {
    padding-top: 0;
    justify-content: center;
}

/* ========================================
   子页面布局 - 左侧边栏导航 + 右侧内容区
   ======================================== */

/* 子页面隐藏扩散圈圈（鼠标跟随光晕） */
body:has(.subpage-wrapper) .glow-orb-3 {
    display: none;
}

/* 子页面整体容器 */
.subpage-wrapper {
    position: relative;
    display: flex;
    min-height: 100vh;
    padding-top: var(--header-height);
    z-index: 10;
}

/* 左侧边栏导航 */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 260px;
    height: calc(100vh - var(--header-height));
    /* 调浅背景色 */
    background: rgba(10, 35, 65, 0.75);
    border-right: 1px solid rgba(0, 212, 255, 0.12);
    backdrop-filter: blur(10px);
    z-index: 100;
    padding: 30px 0;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

/* 侧边栏标题 */
.sidebar-title {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--accent-cyan);
    letter-spacing: 3px;
    padding: 0 25px 20px;
    margin-bottom: 10px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    text-transform: uppercase;
}

/* 侧边栏导航列表 */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0 15px;
}

/* 侧边栏导航项 */
.sidebar-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

/* 侧边栏导航图标圆点 */
.sidebar-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.3);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

/* 侧边栏导航悬停效果 */
.sidebar-item:hover {
    color: var(--text-primary);
    background: rgba(0, 180, 255, 0.1);
    border-left-color: rgba(0, 200, 255, 0.5);
}

.sidebar-item:hover .sidebar-dot {
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--glow-cyan);
}

/* 侧边栏导航激活状态 */
.sidebar-item.active {
    color: var(--accent-cyan);
    background: rgba(0, 180, 255, 0.15);
    border-left-color: var(--accent-cyan);
    font-weight: 500;
}

.sidebar-item.active .sidebar-dot {
    background: var(--accent-cyan);
    box-shadow: 0 0 15px var(--glow-cyan);
    transform: scale(1.3);
}

/* 右侧内容区域 */
.subpage-content {
    flex: 1;
    margin-left: 260px;
    padding: 40px 60px;
    min-height: calc(100vh - var(--header-height));
}

/* 内容区块 */
.content-section {
    margin-bottom: 60px;
    padding: 40px;
    background: rgba(0, 40, 80, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.12);
    border-radius: 12px;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out;
}

/* 内容区块悬停动效 */
.content-section:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.1);
}

/* 内容区块头部 */
.content-section-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.content-section-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 12px;
    flex-shrink: 0;
}

.content-section-icon svg {
    width: 26px;
    height: 26px;
    color: var(--accent-cyan);
}

.content-section-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.content-section-body {
    font-size: 16px;
    line-height: 2;
    color: var(--text-secondary);
}

/* 内容区块中的列表 */
.content-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.content-list-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: rgba(0, 60, 120, 0.25);
    border-radius: 10px;
    border-left: 3px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.content-list-item:hover {
    border-left-color: var(--accent-cyan);
    background: rgba(0, 60, 120, 0.4);
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.1);
}

.content-list-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.3), rgba(0, 102, 255, 0.3));
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.content-list-text h4 {
    font-size: 17px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.content-list-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 视频页面网格 */
.video-page-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

/* 支撑材料卡片网格 */
.material-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.material-card {
    background: rgba(0, 40, 80, 0.4);
    border: 1px solid rgba(0, 212, 255, 0.12);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
}

.material-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.15);
}

.material-card-icon {
    width: 55px;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 12px;
    margin-bottom: 15px;
}

.material-card-icon svg {
    width: 28px;
    height: 28px;
    color: var(--accent-cyan);
}

.material-card h4 {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.material-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 侧边栏回到顶部按钮 */
.sidebar-back-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 20px 20px 0;
    padding: 12px;
    background: rgba(0, 180, 255, 0.1);
    border: 1px solid rgba(0, 200, 255, 0.2);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.sidebar-back-top:hover {
    background: rgba(0, 180, 255, 0.18);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.sidebar-back-top svg {
    width: 16px;
    height: 16px;
}

/* 子页面响应式 */
@media (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }
    .subpage-content {
        margin-left: 220px;
        padding: 30px 30px;
    }
    .video-page-grid,
    .material-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 240px;
        position: fixed;
        z-index: 1000;
        transition: transform 0.3s ease;
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .subpage-content {
        margin-left: 0;
        padding: 20px;
    }
    .content-section {
        padding: 25px;
    }
    .content-section-title {
        font-size: 20px;
    }
    /* 移动端侧边栏切换按钮 */
    .sidebar-toggle {
        display: flex;
        position: fixed;
        left: 10px;
        top: 100px;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        background: rgba(0, 212, 255, 0.15);
        border: 1px solid rgba(0, 212, 255, 0.3);
        border-radius: 8px;
        z-index: 1001;
        cursor: pointer;
        color: var(--accent-cyan);
    }
}

/* 默认隐藏侧边栏切换按钮（桌面端） */
.sidebar-toggle {
    display: none;
}

/* ========================================
   首页 Logo 展示区域（替换原球体）
   ======================================== */

/* 底部建筑底图 */
 .hero-building {
     position: absolute;
     left: 50%;
     transform: translateX(-50%);
     z-index: 3;
     width: 100%;
     max-width: 100%;
     pointer-events: none;
     /* 往上移动，置于页脚上方 */
     bottom: 45px;
 }

 .hero-building img {
     width: 100%;
     height: auto;
     display: block;
     opacity: 0.45;
     /* 底部渐变遮罩，让图片自然融入背景 */
     mask-image: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
     -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
 }

.hero-logo-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-logo-img {
    width: 280px;
    height: 280px;
    object-fit: contain;
    /* 无旋转动画，保持静止 */
    filter: drop-shadow(0 0 30px rgba(0, 229, 255, 0.3));
    animation: logoGlow 4s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% {
        filter: drop-shadow(0 0 30px rgba(0, 229, 255, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 50px rgba(0, 229, 255, 0.6));
    }
}

/* ========================================
   首页新标题样式（单行标题）
   ======================================== */
.hero-title-single {
    margin-bottom: 30px;
}

.title-line-single {
    display: block;
    font-size: 44px;
    font-weight: 700;
    letter-spacing: 4px;
    line-height: 1.5;
    text-shadow: 0 0 40px var(--glow-cyan);
    animation: titleGlow 3s ease-in-out infinite;
}

/* 方案2：双栏布局（视频 + 成果简介） */
.hero-two-column {
    display: flex;
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto 35px;
    align-items: stretch;
}

/* 左侧视频栏 */
.hero-column-video {
    flex: 1;
}

.intro-video-card {
    background: rgba(0, 40, 80, 0.35);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.intro-video-card:hover {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.15);
    transform: translateY(-3px);
}

.intro-video-thumbnail {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, rgba(0, 60, 120, 0.6), rgba(0, 30, 60, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.intro-video-play {
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.intro-video-play svg {
    width: 24px;
    height: 24px;
    color: var(--accent-cyan);
    margin-left: 3px;
}

.intro-video-card:hover .intro-video-play {
    background: var(--accent-cyan);
    transform: scale(1.1);
}

.intro-video-card:hover .intro-video-play svg {
    color: var(--primary-dark);
}

.intro-video-title {
    padding: 14px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    background: rgba(0, 30, 60, 0.5);
}

/* 右侧文字栏 */
.hero-column-intro {
    flex: 1;
    padding: 20px 25px;
    background: rgba(0, 40, 80, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.12);
    border-radius: 12px;
    text-align: left;
    display: flex;
    flex-direction: column;
    max-height: 320px;
    overflow-y: auto;
}

.hero-column-intro::-webkit-scrollbar {
    width: 4px;
}

.hero-column-intro::-webkit-scrollbar-thumb {
    background: rgba(0, 212, 255, 0.3);
    border-radius: 2px;
}

.intro-title {
    font-size: 18px;
    color: var(--accent-cyan);
    margin-bottom: 15px;
    font-weight: 600;
    letter-spacing: 2px;
    flex-shrink: 0;
}

.intro-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.9;
    flex: 1;
}

/* 双栏响应式 */
@media (max-width: 900px) {
    .hero-two-column {
        flex-direction: column;
    }
    .hero-column-video {
        flex: none;
        width: 100%;
    }
    .hero-column-intro {
        max-height: none;
    }
}

@media (max-width: 768px) {
    .hero-two-column {
        gap: 20px;
    }
    .hero-column-intro {
        padding: 15px 18px;
    }
    .intro-text {
        font-size: 13px;
    }
}
.hero-info-cards {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 35px;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 24px;
    background: rgba(0, 40, 80, 0.35);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 8px;
    text-align: left;
    transition: all 0.3s ease;
}

.info-card:hover {
    border-color: rgba(0, 212, 255, 0.4);
    background: rgba(0, 50, 100, 0.45);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.1);
}

.info-card-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 8px;
    flex-shrink: 0;
}

.info-card-icon svg {
    width: 22px;
    height: 22px;
    color: var(--accent-cyan);
}

.info-card-body {
    flex: 1;
}

.info-card-label {
    font-size: 13px;
    color: var(--accent-cyan);
    font-weight: 500;
    margin-bottom: 4px;
    letter-spacing: 2px;
}

.info-card-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 首页信息卡片响应式 */
@media (max-width: 768px) {
    .title-line-single {
        font-size: 26px;
        letter-spacing: 2px;
    }
    .hero-logo-img {
        width: 180px;
        height: 180px;
    }
    .info-card {
        padding: 12px 16px;
    }
    .info-card-text {
        font-size: 12px;
    }
}

/* ========================================
   密码验证遮罩层
   ======================================== */
.password-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 8, 20, 0.95);
    backdrop-filter: blur(15px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-box {
    text-align: center;
    padding: 50px 40px;
    background: rgba(0, 30, 60, 0.5);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 0 60px rgba(0, 212, 255, 0.1);
}

.password-logo {
    margin-bottom: 25px;
}

.password-logo-img {
    height: 80px;
    width: auto;
}

.password-title {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 25px;
    font-weight: 500;
    letter-spacing: 2px;
}

.password-input-group {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 8px;
    overflow: hidden;
    background: rgba(0, 20, 50, 0.6);
    transition: border-color 0.3s ease;
}

.password-input-group:focus-within {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.password-input {
    flex: 1;
    padding: 14px 18px;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 16px;
    font-family: var(--font-body);
    letter-spacing: 2px;
}

.password-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.password-submit {
    padding: 14px 20px;
    background: transparent;
    border: none;
    border-left: 1px solid rgba(0, 212, 255, 0.2);
    color: var(--accent-cyan);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-submit:hover {
    background: rgba(0, 212, 255, 0.15);
}

.password-error {
    color: #ff4d4f;
    font-size: 13px;
    margin-top: 15px;
    min-height: 20px;
}

/* ========================================
   方案选择遮罩层
   ======================================== */
.plan-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 8, 20, 0.95);
    backdrop-filter: blur(15px);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
}

.plan-box {
    text-align: center;
    padding: 50px 40px;
    max-width: 700px;
    width: 90%;
}

.plan-logo {
    margin-bottom: 30px;
}

.plan-title {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 40px;
    font-weight: 500;
    letter-spacing: 3px;
}

.plan-cards {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.plan-card {
    flex: 1;
    min-width: 220px;
    max-width: 280px;
    padding: 40px 30px;
    background: rgba(0, 30, 60, 0.5);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.plan-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-cyan);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
    background: rgba(0, 40, 80, 0.6);
}

.plan-card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 102, 255, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.plan-card:hover .plan-card-icon {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.4), rgba(0, 102, 255, 0.3));
}

.plan-card-icon svg {
    width: 30px;
    height: 30px;
    color: var(--accent-cyan);
}

.plan-card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

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

/* 切换方案按钮 */
.switch-plan-btn {
    padding: 6px 14px;
    border: 1px solid rgba(0, 212, 255, 0.35);
    border-radius: 20px;
    color: var(--accent-cyan);
    font-size: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    letter-spacing: 1px;
}

.switch-plan-btn:hover {
    background: rgba(0, 212, 255, 0.12);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}