/* 每日大赛 品牌官网 样式表 */
:root {
    --primary-color: #8d775f; /* 柔和大地色 */
    --secondary-color: #f5f1ed; /* 浅米色背景 */
    --text-color: #4a4a4a;
    --accent-color: #c9b09a;
    --white: #ffffff;
    --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--secondary-color);
    color: var(--text-color);
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* Header */
header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 50px;
}

nav ul {
    display: flex;
    gap: 30px;
}

nav ul li a {
    font-weight: 500;
    color: var(--primary-color);
}

nav ul li a:hover {
    color: var(--accent-color);
}

/* Search Box */
.search-container {
    padding: 10px 0;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 10px 20px;
    border: 1px solid #ddd;
    border-radius: 25px;
    outline: none;
}

.search-box button {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-color);
}

/* Banner */
.banner {
    position: relative;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;
}

.banner-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.2);
    z-index: -1;
}

.banner-text h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.banner-text p {
    font-size: 1.5rem;
    opacity: 0.9;
}

/* Sections */
section {
    padding: 100px 0;
}

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

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--accent-color);
    font-style: italic;
}

.update-time {
    text-align: center;
    font-size: 0.8rem;
    color: #999;
    margin-top: -40px;
    margin-bottom: 40px;
}

/* Philosophy */
.philosophy-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.2rem;
}

/* Video Cards */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.video-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    position: relative;
}

.video-card:hover {
    transform: translateY(-10px);
}

.video-thumb {
    position: relative;
    cursor: pointer;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-card:hover .play-btn {
    opacity: 1;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: #888;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 15px;
    border-radius: 10px;
    padding: 20px;
}

.faq-item h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* Reviews */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.review-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    border-left: 5px solid var(--accent-color);
}

.review-user {
    font-weight: bold;
    margin-bottom: 10px;
    display: block;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-logo img {
    height: 40px;
    filter: brightness(0) invert(1);
    margin-bottom: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .banner-text h1 {
        font-size: 2.5rem;
    }
    nav ul {
        display: none; /* 简化移动端 */
    }
}