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

:root {
    --primary-color: #0f3460;
    --secondary-color: #e94560;
    --accent-color: #4CAF50;
    --dark-color: #0a0a15;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --card-bg: rgba(26, 26, 46, 0.8);
    --text-color: #e0e0e0;
    --text-light: #a0c1f7;
    --gradient-primary: linear-gradient(135deg, #0f3460 0%, #1a4d8c 100%);
    --gradient-secondary: linear-gradient(135deg, #e94560 0%, #ff5773 100%);
    --gradient-accent: linear-gradient(135deg, #4CAF50 0%, #5dbf5f 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a15 0%, #1a1a2e 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(15, 52, 96, 0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ====== 动态背景 ====== */
.dynamic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    opacity: 0.95;
}

.bg-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ====== 鼠标点击效果 ====== */
#clickEffects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9998;
}

.click-circle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(233, 69, 96, 0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: clickRipple 0.6s ease-out forwards;
}

@keyframes clickRipple {
    0% {
        width: 0;
        height: 0;
        opacity: 0.7;
    }
    100% {
        width: 200px;
        height: 200px;
        opacity: 0;
    }
}

.click-spark {
    position: absolute;
    width: 6px;
    height: 6px;
    background: linear-gradient(45deg, #e94560, #ff9800);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: sparkFly 0.8s ease-out forwards;
}

@keyframes sparkFly {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(var(--tx), var(--ty)) scale(0);
        opacity: 0;
    }
}

/* ====== 鼠标轨迹效果 ====== */
#mouseTrail {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9997;
}

.trail-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: linear-gradient(45deg, #0f3460, #e94560);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: trailFade 1s ease-out forwards;
}

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

/* ====== 滚动条样式 ====== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(26, 26, 46, 0.5);
    backdrop-filter: blur(10px);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* ====== 导航栏 ====== */
.navbar {
    background: rgba(15, 52, 96, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    animation: slideDown 0.5s ease-out;
}

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

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    animation: logoSpin 20s linear infinite;
}

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

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

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, #fff, var(--text-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textGlow 2s ease-in-out infinite alternate;
}

@keyframes textGlow {
    from {
        filter: drop-shadow(0 0 5px rgba(160, 193, 247, 0.5));
    }
    to {
        filter: drop-shadow(0 0 15px rgba(160, 193, 247, 0.8));
    }
}

.brand-tagline {
    font-size: 0.85rem;
    color: var(--text-light);
    opacity: 0.8;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-hover-effect {
    position: relative;
    overflow: hidden;
}

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

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

.login-btn {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 1px;
}

.admin-btn {
    background: var(--gradient-accent);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 1px;
}

/* ====== 按钮发光效果 ====== */
.btn-glow {
    position: relative;
    z-index: 1;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-glow::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 0.7s ease;
    z-index: -1;
}

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

.btn-glow:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(233, 69, 96, 0.4);
}

.btn-glow .btn-shine {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 70%
    );
    transform: rotate(45deg);
    animation: shine 3s infinite linear;
}

@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

/* ====== 脉冲动画 ====== */
.btn-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(76, 175, 80, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(76, 175, 80, 0);
    }
}

/* ====== 漂浮动画 ====== */
.floating {
    animation: floating 3s ease-in-out infinite;
}

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

.floating-slow {
    animation: floating 6s ease-in-out infinite;
}

.float-delay-1 { animation-delay: 0.2s; }
.float-delay-2 { animation-delay: 0.4s; }
.float-delay-3 { animation-delay: 0.6s; }

/* ====== 3D悬停效果 ====== */
.hover-3d {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.hover-3d:hover {
    transform: translateY(-5px) rotateX(5deg) rotateY(5deg);
    box-shadow: var(--shadow-lg);
}

/* ====== 打字机效果 ====== */
.text-typing {
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--secondary-color);
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--secondary-color) }
}

/* ====== 英雄区域 ====== */
.hero-section {
    padding: 120px 2rem 80px;
    position: relative;
    overflow: hidden;
    animation: fadeIn 1s ease-out;
}

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

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-secondary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #fff, var(--text-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

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

.hero-features {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.feature-badge {
    background: rgba(15, 52, 96, 0.3);
    border: 1px solid rgba(160, 193, 247, 0.2);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: var(--transition);
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
}

.feature-badge:hover {
    background: rgba(15, 52, 96, 0.5);
    transform: translateY(-2px) scale(1.05);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    opacity: 0;
    animation: fadeInUp 0.5s ease-out 0.6s both;
}

.hero-cta:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #1a4d8c 0%, #0f3460 100%);
}

.hero-image {
    display: flex;
    justify-content: center;
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.device-mockup {
    width: 300px;
    height: 400px;
    background: linear-gradient(145deg, rgba(26, 26, 46, 0.8), rgba(15, 15, 26, 0.8));
    border-radius: 30px;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 20px 20px 60px rgba(0, 0, 0, 0.5),
                -20px -20px 60px rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.device-mockup::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-secondary);
    border-radius: 2px;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 10px var(--secondary-color);
    }
    to {
        box-shadow: 0 0 20px var(--secondary-color);
    }
}

.device-mockup i {
    font-size: 8rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: iconFloat 4s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-10px) rotate(5deg);
    }
    75% {
        transform: translateY(10px) rotate(-5deg);
    }
}

/* ====== 动态板块区域 ====== */
.dynamic-sections {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.section-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    animation: cardAppear 0.5s ease-out forwards;
    opacity: 0;
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.section-card:nth-child(1) { animation-delay: 0.1s; }
.section-card:nth-child(2) { animation-delay: 0.2s; }
.section-card:nth-child(3) { animation-delay: 0.3s; }
.section-card:nth-child(4) { animation-delay: 0.4s; }

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--card-color, var(--primary-color));
}

.section-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.section-icon {
    width: 50px;
    height: 50px;
    background: var(--card-color, var(--primary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    animation: iconPulse 2s infinite;
}

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

.section-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--card-color, var(--primary-color));
}

.section-content {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-light);
}

/* ====== 下载区域 ====== */
.download-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    opacity: 0.8;
}

.download-card {
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    padding: 3rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    animation: cardAppear 0.5s ease-out 0.2s both;
}

.download-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1%, transparent 20%);
    opacity: 0.1;
    animation: bgRotate 20s linear infinite;
}

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

.download-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.download-info h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: white;
}

.download-info p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
}

.file-info {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.download-action {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 200px;
}

.download-btn, .checksum-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.download-btn {
    background: white;
    color: var(--primary-color);
}

.download-btn:hover {
    background: #f0f0f0;
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-md);
}

.checksum-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.checksum-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px) scale(1.05);
}

/* ====== 校验码区域 ====== */
.checksum-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.checksum-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.checksum-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    animation: cardAppear 0.5s ease-out 0.3s both;
}

.checksum-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.checksum-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.checksum-header i {
    font-size: 2rem;
    color: var(--primary-color);
    animation: iconSpin 4s linear infinite;
}

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

.checksum-header h3 {
    font-size: 1.5rem;
    color: var(--text-color);
}

.checksum-value {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    word-break: break-all;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.checksum-value:hover {
    background: rgba(0, 0, 0, 0.5);
    border-color: var(--secondary-color);
}

.copy-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.copy-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px) scale(1.05);
}

/* ====== 许可协议区域 ====== */
.license-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.license-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    animation: cardAppear 0.5s ease-out 0.4s both;
}

.license-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--gradient-secondary);
    animation: borderGlow 2s ease-in-out infinite alternate;
}

@keyframes borderGlow {
    from {
        box-shadow: 0 0 10px var(--secondary-color);
    }
    to {
        box-shadow: 0 0 20px var(--secondary-color);
    }
}

.license-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
}

.license-content p {
    margin-bottom: 1.5rem;
    animation: textFadeIn 0.5s ease-out forwards;
    opacity: 0;
}

.license-content p:nth-child(1) { animation-delay: 0.1s; }
.license-content p:nth-child(2) { animation-delay: 0.2s; }
.license-content p:nth-child(3) { animation-delay: 0.3s; }

@keyframes textFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ====== 页脚 ====== */
.footer {
    background: linear-gradient(135deg, rgba(10, 10, 21, 0.9) 0%, rgba(26, 26, 46, 0.9) 100%);
    padding: 4rem 2rem 2rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.footer-brand i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-top: 0.5rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-section a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: var(--transition);
    font-size: 0.9rem;
    opacity: 0;
    animation: fadeInLeft 0.5s ease-out forwards;
}

.footer-section a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-section:nth-child(1) a { animation-delay: 0.1s; }
.footer-section:nth-child(2) a { animation-delay: 0.2s; }
.footer-section:nth-child(3) a { animation-delay: 0.3s; }

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-notice {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--secondary-color);
    font-size: 0.9rem;
    animation: fadeInUp 0.5s ease-out 0.5s both;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-btn {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-light);
    animation: fadeInUp 0.5s ease-out 0.6s both;
}

.social-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px) rotate(10deg);
}

/* ====== 模态框样式 ====== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    background: var(--card-bg);
    margin: 5% auto;
    padding: 0;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 800px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
}

@keyframes slideIn {
    from { transform: translateY(-50px) scale(0.9); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1a4d8c 100%);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: white;
    font-size: 1.5rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.close-btn {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.75rem;
    font-weight: 300;
    cursor: pointer;
    transition: var(--transition);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
    max-height: 60vh;
    overflow-y: auto;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
    animation: formSlideIn 0.5s ease-out forwards;
    opacity: 0;
}

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

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }
.form-group:nth-child(4) { animation-delay: 0.4s; }

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(15, 52, 96, 0.3);
    transform: translateY(-2px);
}

.password-input-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.password-toggle:hover {
    color: var(--text-color);
    transform: translateY(-50%) scale(1.2);
}

/* ====== 账号设置样式 ====== */
.account-settings {
    padding: 1rem 0;
}

.account-settings h4 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: fadeInUp 0.5s ease-out 0.1s both;
}

.current-user-info {
    background: rgba(15, 52, 96, 0.1);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(15, 52, 96, 0.2);
    animation: fadeInUp 0.5s ease-out 0.2s both;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item i {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    animation: iconPulse 2s infinite;
}

.info-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.info-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-hint {
    display: block;
    margin-top: 0.5rem;
    color: var(--gray-color);
    font-size: 0.85rem;
    font-style: italic;
}

.security-settings {
    background: rgba(233, 69, 96, 0.05);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border: 1px solid rgba(233, 69, 96, 0.1);
    animation: fadeInUp 0.5s ease-out 0.3s both;
}

.security-settings h5 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.checkbox-group:last-child {
    margin-bottom: 0;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-group input[type="checkbox"]:checked {
    transform: scale(1.2);
}

.checkbox-group label {
    margin: 0;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.checkbox-group:hover label {
    color: white;
}

.account-actions {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    animation: fadeInUp 0.5s ease-out 0.4s both;
}

.reset-btn {
    flex: 1;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.reset-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px) scale(1.05);
}

.security-tips {
    background: rgba(76, 175, 80, 0.05);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-top: 2rem;
    border: 1px solid rgba(76, 175, 80, 0.1);
    animation: fadeInUp 0.5s ease-out 0.5s both;
}

.security-tips h5 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.security-tips ul {
    list-style: none;
    padding-left: 0.5rem;
}

.security-tips li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
    opacity: 0;
    animation: fadeInLeft 0.5s ease-out forwards;
}

.security-tips li:last-child {
    margin-bottom: 0;
}

.security-tips li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    animation: checkPulse 2s infinite;
}

@keyframes checkPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

.security-tips li:nth-child(1) { animation-delay: 0.6s; }
.security-tips li:nth-child(2) { animation-delay: 0.7s; }
.security-tips li:nth-child(3) { animation-delay: 0.8s; }
.security-tips li:nth-child(4) { animation-delay: 0.9s; }

/* 密码强度指示器 */
.password-strength {
    margin-top: 0.5rem;
    animation: fadeInUp 0.5s ease-out 0.3s both;
}

.strength-meter {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.strength-bar {
    height: 100%;
    width: 0;
    transition: width 0.3s ease;
    border-radius: 2px;
}

.strength-bar.weak {
    background: #e94560;
    width: 33%;
}

.strength-bar.medium {
    background: #FF9800;
    width: 66%;
}

.strength-bar.strong {
    background: #4CAF50;
    width: 100%;
}

.strength-text {
    font-size: 0.85rem;
    color: var(--text-light);
    transition: color 0.3s ease;
}

/* 管理面板标签页 */
.admin-tabs {
    display: flex;
    flex-direction: column;
    height: 500px;
}

.tab-buttons {
    display: flex;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 1.5rem;
    gap: 0.5rem;
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    transition: left 0.3s ease;
}

.tab-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--primary-color);
    background: rgba(15, 52, 96, 0.1);
}

.tab-btn.active::before {
    left: 0;
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding-right: 0.5rem;
    animation: fadeIn 0.3s ease-out;
}

.tab-content.active {
    display: block;
}

/* 保存按钮 */
.save-btn {
    width: 100%;
    padding: 1rem;
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1rem;
    position: relative;
    overflow: hidden;
}

.save-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-md);
}

/* 模态框底部 */
.modal-footer {
    padding: 1.5rem 2rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    display: flex;
    gap: 1rem;
    animation: fadeInUp 0.5s ease-out 0.6s both;
}

.logout-btn,
.close-admin-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.logout-btn {
    background: var(--gradient-secondary);
    color: white;
}

.logout-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-md);
}

.close-admin-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.close-admin-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px) scale(1.05);
}

/* ====== 消息提示 ====== */
.message-box {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 3000;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 500;
    opacity: 0;
    transform: translateX(100px);
    transition: var(--transition);
    max-width: 300px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.message-box.show {
    opacity: 1;
    transform: translateX(0);
    animation: messagePop 0.5s ease-out;
}

@keyframes messagePop {
    0% {
        transform: translateX(100px) scale(0.8);
        opacity: 0;
    }
    70% {
        transform: translateX(-10px) scale(1.1);
    }
    100% {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
}

.message-box.success {
    background: rgba(76, 175, 80, 0.9);
    border-left: 4px solid #2e7d32;
}

.message-box.error {
    background: rgba(233, 69, 96, 0.9);
    border-left: 4px solid #c2185b;
}

.message-box.warning {
    background: rgba(255, 152, 0, 0.9);
    border-left: 4px solid #f57c00;
}

/* ====== 全屏控制按钮 ====== */
.fullscreen-control {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    animation: bounceIn 0.5s ease-out 1s both;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.1);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.fullscreen-btn {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    font-size: 1.25rem;
}

.fullscreen-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-lg);
}

/* ====== 响应式设计 ====== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: 0 1rem;
    }
    
    .brand-name {
        font-size: 1.25rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .download-card {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem;
    }
    
    .download-action {
        min-width: auto;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .tab-buttons {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        min-width: 150px;
    }
    
    .modal-body {
        max-height: 70vh;
    }
    
    .admin-tabs {
        height: 400px;
    }
    
    .account-actions {
        flex-direction: column;
    }
    
    .info-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .info-item i {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 100px 1rem 60px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .feature-badge {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    
    .download-card,
    .checksum-card,
    .section-card,
    .license-card {
        padding: 1.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }
}