/* ==========================================================================
   新春倒计时网页样式
   设计理念：现代优雅 + 传统元素
   ========================================================================== */

/* 基础重置和变量 */
:root {
    /* 配色方案 - 暖色调现代风格 */
    --primary-color: #d4af37; /* 金色 */
    --secondary-color: #e74c3c; /* 中国红 */
    --accent-color: #f39c12; /* 暖橙色 */
    --text-primary: #2c3e50; /* 深灰蓝 */
    --text-secondary: #7f8c8d; /* 中灰 */
    --text-light: #ecf0f1; /* 浅色文字 */
    --background-primary: #fdfcfc; /* 米白色 */
    --background-secondary: #f8f9fa; /* 浅灰白 */
    --border-color: #e9ecef; /* 边框色 */

    /* 渐变色 */
    --gradient-warm: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    --gradient-red: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-gold: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);

    /* 阴影 */
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);

    /* 字体 */
    --font-primary: 'Noto Serif SC', serif;
    --font-secondary: 'Inter', sans-serif;

    /* 动画时间 */
    --animation-fast: 0.3s;
    --animation-normal: 0.5s;
    --animation-slow: 1s;
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: var(--background-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* 背景容器 */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 50%, #ffd1dc 100%);
    transition: background 2s ease;
}

/* 倒计时阶段背景 */
.background-container.countdown-100 {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
}

.background-container.countdown-30 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 50%, #fa709a 100%);
}

.background-container.countdown-10 {
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 50%, #ff9ff3 100%);
}

.background-container.countdown-1 {
    background: linear-gradient(135deg, #ee0979 0%, #ff6a00 50%, #ee0979 100%);
    animation: celebration-bg 3s ease-in-out infinite;
}

@keyframes celebration-bg {
    0%,
    100% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.2);
    }
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0.1) 100%
    );
    z-index: -1;
}

/* 浮动元素动画背景 */
.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.floating-elements::before,
.floating-elements::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite linear;
}

.floating-elements::before {
    width: 200px;
    height: 200px;
    background: var(--primary-color);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-elements::after {
    width: 150px;
    height: 150px;
    background: var(--secondary-color);
    top: 60%;
    right: 10%;
    animation-delay: -10s;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-30px) rotate(120deg);
    }
    66% {
        transform: translateY(30px) rotate(240deg);
    }
}

/* 音乐控制 */
.music-control {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.music-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
    color: var(--primary-color);
    box-shadow: var(--shadow-light);
    transition: all var(--animation-fast) ease;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.music-btn:hover {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.music-btn.playing .music-icon {
    animation: musicPulse 1s infinite;
}

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

/* 主容器调整，移除导航栏后的正常padding */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px 40px; /* 恢复正常顶部padding */
    position: relative;
    z-index: 1;
}

/* 头部标题 */
.header {
    text-align: center;
    margin-bottom: 60px;
    animation: fadeInUp 1s ease-out;
}

.main-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
}

.title-text {
    display: block;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--accent-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.title-year {
    display: block;
    font-size: 0.6em;
    color: var(--secondary-color);
    font-weight: 400;
    margin-top: 10px;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
    font-weight: 300;
}

/* 倒计时区域 */
.countdown-section {
    text-align: center;
    margin-bottom: 80px;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.countdown-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    padding: 25px 20px;
    box-shadow: var(--shadow-light);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 100px;
    transition: transform var(--animation-fast) ease;
}

.countdown-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.countdown-number {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--accent-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.countdown-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 1px;
}

.countdown-separator {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    animation: pulse 2s infinite;
}

.countdown-message {
    font-size: 1.3rem;
    color: var(--text-primary);
    font-weight: 500;
    background: rgba(255, 255, 255, 0.8);
    padding: 15px 30px;
    border-radius: 30px;
    display: inline-block;
    box-shadow: var(--shadow-light);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

/* 祝福语区域 */
.blessing-section {
    margin-bottom: 80px;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.blessing-container {
    position: relative;
    height: 120px;
    overflow: hidden;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-light);
    margin-bottom: 30px;
}

.blessing-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    transform: translateX(100%);
    transition: all var(--animation-normal) ease;
    padding: 20px;
}

.blessing-item.active {
    opacity: 1;
    transform: translateX(0);
}

.blessing-text {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.blessing-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
    font-style: italic;
    font-weight: 300;
}

.blessing-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.3);
    cursor: pointer;
    transition: all var(--animation-fast) ease;
}

.dot.active,
.dot:hover {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* 装饰元素 */
.decoration-section {
    position: relative;
    height: 200px;
    margin-bottom: 60px;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.lantern-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.lantern {
    position: absolute;
    width: 60px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), #c0392b);
    border-radius: 30px 30px 40px 40px;
    box-shadow: var(--shadow-medium);
    animation: swing 3s ease-in-out infinite;
}

.lantern::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
}

.lantern::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 20px;
    background: linear-gradient(135deg, var(--accent-color), #e67e22);
    border-radius: 50%;
}

.lantern-left {
    top: 20px;
    left: 10%;
    animation-delay: 0s;
}

.lantern-right {
    top: 20px;
    right: 10%;
    animation-delay: 1.5s;
}

@keyframes swing {
    0%,
    100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(3deg);
    }
    75% {
        transform: rotate(-3deg);
    }
}

/* 樱花花瓣 */
.cherry-blossom {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.petal {
    position: absolute;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #ffb6c1, #ffc0cb);
    border-radius: 50% 0;
    opacity: 0.7;
    animation: fall 10s infinite linear;
}

.petal-1 {
    left: 10%;
    animation-delay: 0s;
}
.petal-2 {
    left: 30%;
    animation-delay: 2s;
}
.petal-3 {
    left: 50%;
    animation-delay: 4s;
}
.petal-4 {
    left: 70%;
    animation-delay: 6s;
}
.petal-5 {
    left: 90%;
    animation-delay: 8s;
}

@keyframes fall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    90% {
        opacity: 0.7;
    }
    100% {
        transform: translateY(300px) rotate(360deg);
        opacity: 0;
    }
}

/* 春节介绍区域 */
.festival-intro-section {
    margin-bottom: 80px;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.intro-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.intro-header {
    text-align: center;
    margin-bottom: 50px;
}

.intro-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--secondary-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.intro-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
}

.intro-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.intro-card {
    background: rgba(255, 255, 255, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: 30px 25px;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: all var(--animation-fast) ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.intro-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
    background: rgba(255, 255, 255, 0.95);
}

.intro-card .card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.intro-card h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 600;
}

.intro-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

.learn-more {
    text-align: center;
    margin-top: 40px;
}

.learn-more-btn {
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--accent-color)
    );
    color: white;
    border: none;
    padding: 15px 35px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-light);
    transition: all var(--animation-fast) ease;
    font-family: var(--font-primary);
}

.learn-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(
        135deg,
        var(--accent-color),
        var(--primary-color)
    );
}

.learn-more-btn .btn-arrow {
    font-size: 1.2rem;
    transition: transform var(--animation-fast) ease;
}

.learn-more-btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* 春节记录区域 */
.memories-section {
    margin-bottom: 80px;
    animation: fadeInUp 1s ease-out 0.8s both;
}

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

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
}

.memories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.memory-card {
    background: rgba(255, 255, 255, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px;
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--animation-fast) ease;
}

.memory-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.memory-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(212, 175, 55, 0.2);
}

.memory-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--accent-color)
    );
    border-radius: 12px;
    color: white;
}

.memory-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.memory-content {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-content {
    text-align: center;
    width: 100%;
}

.placeholder-text {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 25px;
    line-height: 1.6;
}

.photo-placeholder,
.video-placeholder {
    text-align: center;
    width: 100%;
}

.placeholder-image,
.placeholder-video {
    width: 100%;
    height: 150px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border: 2px dashed rgba(212, 175, 55, 0.3);
    transition: all var(--animation-fast) ease;
}

.placeholder-image:hover,
.placeholder-video:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #ffecd2, #fcb69f);
}

.placeholder-icon {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.placeholder-image p,
.placeholder-video p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.add-memory-btn {
    background: rgba(212, 175, 55, 0.1);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 12px 25px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--animation-fast) ease;
    font-family: var(--font-primary);
}

.add-memory-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.add-memory-btn span:first-child {
    font-size: 1.2rem;
    font-weight: bold;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.5);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin-top: 40px;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.footer-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-family: var(--font-secondary);
}

.separator {
    margin: 0 15px;
    color: var(--primary-color);
}

.footer-links {
    margin-top: 15px;
}

.footer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-family: var(--font-secondary);
    transition: all var(--animation-fast) ease;
}

.footer-link:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* 动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-container {
        padding: 20px 15px;
    }

    .countdown-container {
        gap: 10px;
    }

    .countdown-item {
        padding: 20px 15px;
        min-width: 80px;
    }

    .countdown-number {
        font-size: 2.5rem;
    }

    .countdown-separator {
        font-size: 1.5rem;
    }

    .blessing-text {
        font-size: 1.4rem;
    }

    .lantern {
        width: 40px;
        height: 60px;
    }

    .music-control {
        top: 15px;
        right: 15px;
    }

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

    /* 响应式介绍区域 */
    .intro-title {
        font-size: 2rem;
    }

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

    .intro-card {
        padding: 25px 20px;
    }

    /* 响应式记录区域 */
    .section-title {
        font-size: 1.8rem;
    }

    .memories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .memory-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .countdown-container {
        flex-direction: column;
        gap: 15px;
    }

    .countdown-separator {
        display: none;
    }

    .countdown-item {
        width: 100%;
        max-width: 200px;
    }

    .blessing-text {
        font-size: 1.2rem;
    }

    .decoration-section {
        height: 150px;
    }
}

/* 新年到来后的样式 */
.new-year-celebration {
    animation: celebration 2s ease-in-out;
}

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

.fireworks {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 999;
}

.firework {
    position: absolute;
    border-radius: 50%;
    animation: explode 1s ease-out;
}

@keyframes explode {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* 导航栏样式 */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    z-index: 200;
    padding: 15px 0;
    transform: translateY(0);
    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
    opacity: 1;
}

.main-nav.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

.main-nav.nav-compact {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.98);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: font-size 0.3s ease;
}

.nav-compact .nav-brand {
    font-size: 1.1rem;
}

.nav-icon {
    font-size: 1.5rem;
    transition: font-size 0.3s ease;
}

.nav-compact .nav-icon {
    font-size: 1.3rem;
}

.nav-links {
    display: flex;
    gap: 20px;
    transition: gap 0.3s ease;
}

.nav-compact .nav-links {
    gap: 15px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-weight: 500;
    transition: all var(--animation-fast) ease;
    border: 2px solid transparent;
}

.nav-compact .nav-link {
    padding: 8px 12px;
    font-size: 0.9rem;
}

.nav-link:hover {
    background: rgba(212, 175, 55, 0.1);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.link-icon {
    font-size: 1.1rem;
    transition: font-size 0.3s ease;
}

.nav-compact .link-icon {
    font-size: 1rem;
}

/* 主容器调整，为导航栏留出空间 */
.main-container {
    padding-top: 80px;
    transition: padding-top 0.3s ease;
}

/* 响应式导航栏 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-link {
        font-size: 0.9rem;
        padding: 8px 12px;
    }

    .main-container {
        padding-top: 120px;
    }
}

/* 视频展示区域 */
.video-section {
    margin: 80px 0;
    position: relative;
    z-index: 2;
}

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

.video-header {
    text-align: center;
    margin-bottom: 50px;
}

.video-title {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 15px;
    background: linear-gradient(45deg, #ff6b6b, #ee5a52);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.video-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.video-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    align-items: start;
}

.video-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: all var(--animation-normal) ease;
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.video-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9; /* 使用16:9比例 */
    overflow: hidden;
    border-radius: 15px;
    background: #000; /* 视频未加载时的背景 */
}

.video-item video {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 改为contain以显示完整视频 */
    display: block;
    background: #000;
}

/* 确保视频加载前有正确的尺寸 */
.video-item video:not([src]) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 25px 20px 20px;
    transform: translateY(100%);
    transition: transform var(--animation-normal) ease;
}

.video-item:hover .video-overlay {
    transform: translateY(0);
}

.video-overlay h3 {
    margin: 0 0 8px 0;
    font-size: 1.3rem;
    font-weight: 600;
}

.video-overlay p {
    margin: 0;
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .video-wrapper {
        aspect-ratio: 16/9; /* 移动端也保持16:9比例 */
    }

    .video-title {
        font-size: 2rem;
    }

    .video-overlay {
        position: static;
        transform: none;
        background: rgba(0, 0, 0, 0.8);
    }
}

/* 统一页脚样式 */
.footer {
    margin-top: 60px;
    padding: 30px 20px;
    background: rgba(0, 0, 0, 0.05);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

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

.footer p {
    margin: 0 0 15px 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.footer .footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.footer .footer-link {
    color: var(--accent-primary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    font-size: 14px;
}

.footer .footer-link:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

.footer .footer-separator {
    color: var(--text-secondary);
    font-size: 12px;
}