/* ===========================================
   老张AI助手 - 落地页样式
   超炫酷深色科技风
   =========================================== */

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

*,
*::before,
*::after {
    -webkit-tap-highlight-color: transparent;
}

:root {
    --primary-color: #4fc3f7;
    --secondary-color: #00d4ff;
    --bg-dark: #0a0f1c;
    --bg-darker: #060a14;
    --text-primary: #ffffff;
    --text-secondary: #b0c4de;
    --accent-glow: rgba(79, 195, 247, 0.3);
}

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border: none;
    outline: none;
}

a {
    -webkit-tap-highlight-color: transparent;
}

/* 粒子背景 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0a0f1c 0%, #1a1a2e 50%, #16213e 100%);
}

.particles::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(79, 195, 247, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 195, 247, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

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

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

/* 导航栏 - 炫酷科技风 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(6, 10, 20, 0.95);
    background: linear-gradient(180deg, 
        rgba(6, 10, 20, 0.95) 0%, 
        rgba(6, 10, 20, 0.85) 100%);
    -webkit-backdrop-filter: blur(30px);
    backdrop-filter: blur(30px);
    border-bottom: 1px solid rgba(79, 195, 247, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5), 0 0 50px rgba(79, 195, 247, 0.1);
}

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

/* Logo样式 - 默认隐藏，仅移动端显示 */
.nav-logo {
    display: none !important;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s;
    padding: 10px 15px;
    border-radius: 10px;
    position: relative;
}

.logo-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79, 195, 247, 0.1);
    border: 1px solid rgba(79, 195, 247, 0.3);
    border-radius: 10px;
    font-size: 1.5rem;
    transition: all 0.4s;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.nav-logo:hover {
    transform: translateY(-2px);
}

.nav-logo:hover .logo-icon {
    background: rgba(79, 195, 247, 0.2);
    border-color: var(--primary-color);
    transform: rotate(-5deg) scale(1.05);
    box-shadow: 0 0 20px rgba(79, 195, 247, 0.5);
}

.nav-logo:hover .logo-text {
    text-shadow: 0 0 15px rgba(79, 195, 247, 0.6);
    letter-spacing: 2px;
}

.nav-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    padding: 20px 0;
}

/* 导航分隔线 */
.nav-divider {
    width: 2px;
    height: 40px;
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(79, 195, 247, 0.3) 20%,
        rgba(79, 195, 247, 0.6) 50%,
        rgba(79, 195, 247, 0.3) 80%,
        transparent 100%
    );
    margin: 0 40px;
    position: relative;
}

.nav-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(79, 195, 247, 0.8);
    animation: dividerPulse 2s ease-in-out infinite;
}

@keyframes dividerPulse {
    0%, 100% { 
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% { 
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.3);
    }
}

/* 导航链接 */
.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 15px 30px;
    border-radius: 10px;
}

/* 导航图标 */
.nav-icon {
    font-size: 1.3rem;
    color: rgba(79, 195, 247, 0.6);
    transition: all 0.4s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(79, 195, 247, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(79, 195, 247, 0.2);
}

/* 导航文字 */
.nav-text {
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.4s;
}

/* 发光背景 */
.nav-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(79, 195, 247, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

/* 悬浮效果 */
.nav-link:hover {
    color: var(--primary-color);
    background: rgba(79, 195, 247, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(79, 195, 247, 0.2);
}

.nav-link:hover .nav-icon {
    color: var(--primary-color);
    background: rgba(79, 195, 247, 0.2);
    border-color: var(--primary-color);
    transform: rotate(5deg) scale(1.1);
    box-shadow: 0 0 20px rgba(79, 195, 247, 0.6);
}

.nav-link:hover .nav-text {
    text-shadow: 0 0 15px rgba(79, 195, 247, 0.6);
    letter-spacing: 1.5px;
}

.nav-link:hover .nav-glow {
    width: 200px;
    height: 200px;
}

/* 导航栏扫描线 */
.nav-scan-line {
    position: absolute;
    bottom: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(79, 195, 247, 0.6) 30%, 
        rgba(79, 195, 247, 1) 50%, 
        rgba(79, 195, 247, 0.6) 70%, 
        transparent 100%);
    box-shadow: 0 0 30px rgba(79, 195, 247, 0.8);
    animation: navScanMove 10s linear infinite;
}

@keyframes navScanMove {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 移动端汉堡菜单按钮 */
.mobile-menu-btn {
    display: none;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 6px;
    background: rgba(79, 195, 247, 0.1);
    border: 1px solid rgba(79, 195, 247, 0.3);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
    position: fixed;
    top: 15px;
    right: 20px;
    z-index: 1002;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.mobile-menu-btn:hover {
    background: rgba(79, 195, 247, 0.2);
    border-color: rgba(79, 195, 247, 0.5);
    box-shadow: 0 0 20px rgba(79, 195, 247, 0.3);
}

.menu-line {
    width: 25px;
    height: 3px;
    background: #4fc3f7;
    background: var(--primary-color);
    border-radius: 3px;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
    box-shadow: 0 0 10px rgba(79, 195, 247, 0.5);
}

/* 汉堡菜单展开动画 */
.mobile-menu-btn.active .menu-line:nth-child(1) {
    -webkit-transform: rotate(45deg) translateY(9px);
    transform: rotate(45deg) translateY(9px);
}

.mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active .menu-line:nth-child(3) {
    -webkit-transform: rotate(-45deg) translateY(-9px);
    transform: rotate(-45deg) translateY(-9px);
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
    }

    .navbar .container {
        padding: 15px 20px;
        position: relative;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
    }

    .nav-logo {
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        padding: 5px 10px;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }

    .logo-text {
        font-size: 1.1rem;
    }

    .nav-content {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        height: 100dvh; /* 动态视口高度 */
        background: rgba(6, 10, 20, 0.98);
        background: linear-gradient(180deg, 
            rgba(6, 10, 20, 0.98) 0%, 
            rgba(10, 15, 28, 0.98) 100%);
        -webkit-backdrop-filter: blur(30px);
        backdrop-filter: blur(30px);
        border-left: 2px solid rgba(79, 195, 247, 0.3);
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 0;
        padding: 0;
        padding-left: 20px;
        padding-right: 20px;
        -webkit-transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1001;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-content.active {
        right: 0;
    }

    .nav-link {
        width: 100% !important;
        padding: 20px !important;
        border-radius: 12px !important;
        margin-bottom: 10px !important;
        margin-top: 0 !important;
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        -webkit-box-align: center !important;
        -ms-flex-align: center !important;
        align-items: center !important;
        gap: 15px !important;
        background-color: rgba(79, 195, 247, 0.05) !important;
        background: rgba(79, 195, 247, 0.05) !important;
        border: 1px solid rgba(79, 195, 247, 0.2) !important;
        color: #aebfd5 !important;
        text-decoration: none !important;
        -webkit-box-flex: 0 !important;
        -ms-flex: 0 0 auto !important;
        flex: 0 0 auto !important;
    }

    .nav-link:first-child {
        margin-top: 0 !important;
    }

    .nav-link:hover {
        background: rgba(79, 195, 247, 0.15);
        border-color: rgba(79, 195, 247, 0.4);
    }

    .nav-icon {
        width: 45px !important;
        height: 45px !important;
        font-size: 1.4rem !important;
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        -webkit-box-align: center !important;
        -ms-flex-align: center !important;
        align-items: center !important;
        -webkit-box-pack: center !important;
        -ms-flex-pack: center !important;
        justify-content: center !important;
        background-color: rgba(79, 195, 247, 0.1) !important;
        background: rgba(79, 195, 247, 0.1) !important;
        border: 1px solid rgba(79, 195, 247, 0.3) !important;
        border-radius: 10px !important;
        color: #4fc3f7 !important;
        -webkit-box-flex: 0 !important;
        -ms-flex: 0 0 auto !important;
        flex: 0 0 auto !important;
    }

    .nav-text {
        font-size: 1.1rem !important;
        -webkit-box-flex: 1 !important;
        -ms-flex: 1 !important;
        flex: 1 !important;
        color: #aebfd5 !important;
    }

    .nav-glow {
        display: none;
    }

    .nav-divider {
        display: none;
    }

    /* 移动端菜单遮罩 */
    .mobile-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.7);
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        -webkit-transition: opacity 0.4s, visibility 0.4s;
        transition: opacity 0.4s, visibility 0.4s;
        cursor: pointer;
    }

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

/* 英雄区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.title-with-version {
    display: flex;
    align-items: flex-end;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 0;
    line-height: 1;
    background: linear-gradient(
        90deg,
        var(--primary-color) 0%,
        var(--primary-color) 40%,
        #ffffff 50%,
        var(--primary-color) 60%,
        var(--primary-color) 100%
    );
    background-size: 200% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 3s ease-in-out infinite;
    text-shadow: 
        0 0 20px rgba(79, 195, 247, 0.6),
        0 0 40px rgba(79, 195, 247, 0.4);
}

/* 故障文字效果 */
.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    animation: glitch-1 2s infinite;
    color: #00d4ff;
    z-index: -1;
}

.glitch::after {
    animation: glitch-2 2s infinite;
    color: #ff00ff;
    z-index: -2;
}

@keyframes glitch-1 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
}

@keyframes glitch-2 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(2px, -2px); }
    40% { transform: translate(2px, 2px); }
    60% { transform: translate(-2px, -2px); }
    80% { transform: translate(-2px, 2px); }
}

/* 扫光动画 */
@keyframes shine {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
    background: linear-gradient(
        90deg,
        rgba(79, 195, 247, 0.8) 0%,
        rgba(0, 212, 255, 1) 50%,
        rgba(79, 195, 247, 0.8) 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textShine 3s linear infinite;
}

@keyframes textShine {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    text-shadow: 0 0 20px rgba(79, 195, 247, 0.3);
    animation: textGlow 2s ease-in-out infinite alternate;
}

@keyframes textGlow {
    0% { 
        text-shadow: 0 0 10px rgba(79, 195, 247, 0.2);
        opacity: 0.9;
    }
    100% { 
        text-shadow: 0 0 20px rgba(79, 195, 247, 0.5);
        opacity: 1;
    }
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    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, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px var(--accent-glow);
}

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

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

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    background: rgba(79, 195, 247, 0.1);
    border: 1px solid rgba(79, 195, 247, 0.3);
    border-radius: 15px;
    color: var(--primary-color);
    font-size: 0.7rem;
    margin-bottom: 5px;
}

/* 应用预览 - 超炫酷特效 */
.app-preview {
    position: relative;
    border-radius: 20px;
    overflow: visible;
    transform-style: preserve-3d;
    animation: float3D 6s ease-in-out infinite;
}

@keyframes float3D {
    0%, 100% { 
        transform: translateY(0) rotateX(0deg) rotateY(0deg); 
    }
    25% { 
        transform: translateY(-20px) rotateX(5deg) rotateY(-5deg); 
    }
    50% { 
        transform: translateY(-10px) rotateX(-5deg) rotateY(5deg); 
    }
    75% { 
        transform: translateY(-15px) rotateX(3deg) rotateY(-3deg); 
    }
}

.app-preview img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    border: 2px solid rgba(79, 195, 247, 0.5);
    box-shadow: 
        0 0 40px rgba(79, 195, 247, 0.6),
        0 0 80px rgba(0, 212, 255, 0.4),
        0 20px 60px rgba(0, 0, 0, 0.8);
    transition: all 0.5s ease;
    position: relative;
    z-index: 2;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.app-preview:hover img {
    transform: scale(1.05);
    border-color: rgba(79, 195, 247, 1);
    box-shadow: 
        0 0 60px rgba(79, 195, 247, 0.9),
        0 0 120px rgba(0, 212, 255, 0.6),
        0 30px 80px rgba(0, 0, 0, 0.9);
}

/* 旋转光晕效果 - 已禁用 */
/* .preview-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 30%, rgba(79, 195, 247, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(0, 212, 255, 0.3) 0%, transparent 50%),
        conic-gradient(from 0deg, transparent 0%, rgba(79, 195, 247, 0.2) 50%, transparent 100%);
    animation: rotateGlow 8s linear infinite;
    z-index: 1;
}

@keyframes rotateGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
} */

/* 图片扫描线效果 - 已禁用 */
/* .app-preview::before {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(79, 195, 247, 0.3) 50%,
        transparent 100%
    );
    animation: scanLine 3s ease-in-out infinite;
    z-index: 3;
    pointer-events: none;
}

@keyframes scanLine {
    0% { top: -100%; }
    100% { top: 200%; }
} */

/* 图片边框光效 */
.app-preview::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: linear-gradient(
        45deg,
        #00d4ff,
        #4fc3f7,
        #00d4ff,
        #4fc3f7
    );
    background-size: 400% 400%;
    border-radius: 22px;
    z-index: 0;
    animation: borderGlow 3s ease infinite;
    opacity: 0.6;
}

@keyframes borderGlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--primary-color);
    border-radius: 15px;
    position: relative;
}

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

@keyframes wheelScroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

.arrow {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.arrow span {
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--primary-color);
    border-right: 2px solid var(--primary-color);
    transform: rotate(45deg);
    animation: arrowBounce 1.5s infinite;
}

.arrow span:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes arrowBounce {
    0%, 100% { opacity: 0; transform: rotate(45deg) translateY(-10px); }
    50% { opacity: 1; transform: rotate(45deg) translateY(0); }
}

/* 章节标题 - 超炫特效 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    display: inline-block;
    background: linear-gradient(
        135deg,
        #4fc3f7 0%,
        #00d4ff 25%,
        #4fc3f7 50%,
        #00d4ff 75%,
        #4fc3f7 100%
    );
    background-size: 300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: titleWave 4s ease infinite;
}

.section-title::before {
    content: '';
    display: block;
    width: 0;
    height: 0;
}

@keyframes titleWave {
    0%, 100% { 
        background-position: 0% 50%;
        filter: brightness(1);
    }
    50% { 
        background-position: 100% 50%;
        filter: brightness(1.3);
    }
}

.title-icon {
    display: inline-block;
    margin-right: 10px;
    color: var(--primary-color);
    animation: iconFloat 2s ease-in-out infinite;
    filter: drop-shadow(0 0 10px rgba(79, 195, 247, 0.8));
    vertical-align: middle;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-10px) scale(1.1); }
}

@keyframes iconRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 功能特性 */
.features {
    padding: 100px 0;
    text-align: center;
}

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

.feature-card {
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid rgba(79, 195, 247, 0.2);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(79, 195, 247, 0.2), transparent);
    transition: left 0.6s;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(79, 195, 247, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.feature-card:hover::after {
    opacity: 1;
    animation: cardGlow 2s ease infinite;
}

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

.feature-card:hover {
    transform: translateY(-15px) scale(1.03);
    border-color: var(--primary-color);
    box-shadow: 
        0 20px 60px rgba(79, 195, 247, 0.4),
        0 0 40px rgba(0, 212, 255, 0.3),
        inset 0 0 20px rgba(79, 195, 247, 0.1);
    background: rgba(26, 26, 46, 0.9);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    font-size: 2rem;
    color: white;
    box-shadow: 
        0 10px 30px var(--accent-glow),
        0 0 40px rgba(79, 195, 247, 0.4);
    transition: all 0.4s ease;
    position: relative;
}

.feature-icon::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00d4ff, #4fc3f7);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.2) rotate(360deg);
    box-shadow: 
        0 15px 50px var(--accent-glow),
        0 0 60px rgba(79, 195, 247, 0.8);
}

.feature-card:hover .feature-icon::before {
    opacity: 0.6;
    animation: iconPulse 1.5s ease infinite;
}

@keyframes iconPulse {
    0%, 100% { 
        transform: scale(1);
        opacity: 0.6;
    }
    50% { 
        transform: scale(1.3);
        opacity: 0.2;
    }
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 技术栈 */
.tech-stack {
    padding: 100px 0;
    background: rgba(6, 10, 20, 0.5);
    text-align: center;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.tech-item {
    text-align: center;
    padding: 30px;
    border-radius: 15px;
    background: rgba(26, 26, 46, 0.4);
    border: 1px solid rgba(79, 195, 247, 0.1);
    transition: all 0.3s;
}

.tech-item:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

.tech-logo {
    font-size: 4rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.tech-item h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.tech-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 下载区域 */
.download-section {
    padding: 100px 0;
    text-align: center;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.download-card {
    background: rgba(26, 26, 46, 0.8);
    border: 2px solid rgba(79, 195, 247, 0.3);
    border-radius: 20px;
    padding: 50px 40px;
    text-align: center;
    transition: all 0.3s;
}

.download-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 60px rgba(79, 195, 247, 0.3);
}

.platform-icon {
    font-size: 5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.download-card h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.platform-desc {
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--accent-glow);
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.download-btn::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #00d4ff, #4fc3f7, #00d4ff, #4fc3f7);
    background-size: 400% 400%;
    border-radius: 50px;
    z-index: -1;
    animation: borderFlow 3s ease infinite;
    opacity: 0;
    transition: opacity 0.3s;
}

.download-btn:hover::after {
    opacity: 1;
}

@keyframes borderFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.download-btn:hover {
    transform: scale(1.1) translateY(-3px);
    box-shadow: 
        0 15px 50px var(--accent-glow),
        0 0 60px rgba(79, 195, 247, 0.6);
}

.download-btn i {
    animation: iconBounce 2s ease infinite;
}

@keyframes iconBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.download-btn.coming-soon {
    background: rgba(79, 195, 247, 0.2);
    cursor: not-allowed;
    opacity: 0.7;
}

.download-btn.coming-soon::after {
    display: none;
}

/* 更新日志 */
.update-notes {
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid rgba(79, 195, 247, 0.2);
    border-radius: 15px;
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.update-notes h4 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.update-notes ul {
    list-style: none;
}

.update-notes li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(79, 195, 247, 0.1);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 15px;
}

.update-notes li:last-child {
    border-bottom: none;
}

.update-notes li i {
    color: var(--primary-color);
}

/* 关于我们 */
.about-section {
    padding: 100px 0;
    background: rgba(6, 10, 20, 0.5);
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 2;
}

.about-content strong {
    color: var(--primary-color);
    font-weight: 700;
    text-shadow: 0 0 20px rgba(79, 195, 247, 0.4);
}

/* 页脚 */
.footer {
    background: rgba(6, 10, 20, 0.9);
    border-top: 1px solid rgba(79, 195, 247, 0.2);
    padding: 40px 0 20px;
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(79, 195, 247, 0.1);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
    
}

@media (max-width: 640px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .download-grid {
        grid-template-columns: 1fr;
    }
}