/* ================= 基础重置 ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

:root {
    --bg-dark: #0a0a0a;         /* 深黑背景 */
    --bg-card: #141414;         /* 卡片背景 */
    --accent-gold: #c8a165;      /* 奢华金 */
    --accent-gold-light: #e0c080;/* 亮金 */
    --text-light: #ffffff;       /* 白色文字 */
    --text-gray: #888888;        /* 灰色文字 */
    --border-color: #222222;     /* 边框色 */
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ================= 顶部信息栏 ================= */
.top-bar {
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
    font-size: 13px;
    color: var(--text-gray);
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.top-left span {
    margin-right: 20px;
}

.top-right a {
    margin-left: 20px;
    transition: color 0.3s;
}

.top-right a:hover {
    color: var(--accent-gold);
}

/* ================= 品牌头部 ================= */
.main-header {
    padding: 30px 0;
}

.header-inner {
    display: flex;
    align-items: center;
}

.logo-area img {
    max-height: 60px;
    width: auto;
}

.logo-text h1 {
    font-size: 28px;
    color: var(--accent-gold);
    letter-spacing: 2px;
}

.logo-text p {
    font-size: 12px;
    color: var(--text-gray);
    letter-spacing: 4px;
}

/* ================= 主视觉横幅 (Hero) ================= */
.hero {
    padding: 100px 0;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('../images/hero-bg.jpg') no-repeat center center/cover;
    /* 如果本地没有 hero-bg.jpg，这里用深色背景兜底 */
    background-color: #111;
    border-bottom: 1px solid var(--border-color);
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 700px;
}

.hero-tag {
    display: inline-block;
    padding: 5px 15px;
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    font-size: 14px;
    margin-bottom: 25px;
    border-radius: 2px;
}

.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 300;
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero-content h1 .highlight {
    color: var(--accent-gold);
    font-weight: 600;
}

.hero-content h2 {
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--text-gray);
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 35px;
    max-width: 600px;
}

.btn-primary {
    display: inline-block;
    padding: 15px 40px;
    background-color: transparent;
    color: var(--accent-gold);
    border: 1px solid var(--accent-gold);
    font-size: 1.1rem;
    letter-spacing: 1px;
    transition: all 0.3s;
}

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

/* ================= 三大核心特色 ================= */
.features {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.feature-card {
    background-color: var(--bg-card);
    padding: 40px 30px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-gold);
}

.feature-icon {
    font-size: 24px;
    color: var(--accent-gold);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--accent-gold);
    margin-bottom: 5px;
}

.feature-sub {
    font-size: 0.9rem;
    color: var(--text-gray);
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.feature-tag {
    font-size: 1rem;
    color: var(--accent-gold-light);
    margin-bottom: 15px;
    border-left: 2px solid var(--accent-gold);
    padding-left: 10px;
}

.feature-card p {
    color: #aaa;
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.feature-hash {
    font-size: 0.8rem;
    color: var(--accent-gold);
    opacity: 0.8;
}

/* ================= 品牌介绍与数据 ================= */
.about {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.about-text h2 {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 10px;
}

.about-text h2 .highlight {
    color: var(--accent-gold);
    font-weight: 600;
}

.about-text h3 {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 25px;
    font-weight: 300;
}

.about-text p {
    color: #aaa;
    margin-bottom: 20px;
    font-size: 1rem;
}

.about-tag {
    display: inline-block;
    margin-top: 10px;
    color: var(--accent-gold);
    font-size: 1.1rem;
    border-top: 1px solid var(--accent-gold);
    padding-top: 10px;
}

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

.stat-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 30px 20px;
    text-align: center;
    transition: border-color 0.3s;
}

.stat-item:hover {
    border-color: var(--accent-gold);
}

.stat-num {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-gold);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-gray);
    letter-spacing: 1px;
}

/* ================= 品质历程 ================= */
.history {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.history h2 {
    font-size: 2rem;
    text-align: center;
    color: var(--accent-gold);
    margin-bottom: 10px;
    font-weight: 300;
}

.history-sub {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 60px;
    font-size: 1.1rem;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 30px;
    border-left: 2px solid var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -37px;
    top: 5px;
    width: 12px;
    height: 12px;
    background-color: var(--accent-gold);
    border-radius: 50%;
    border: 2px solid var(--bg-dark);
}

.timeline-item .year {
    display: block;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--accent-gold);
    margin-bottom: 5px;
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.timeline-content p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* ================= 页脚 ================= */
footer {
    padding: 40px 0;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-gray);
}

.footer-content p {
    margin-bottom: 10px;
}

.copyright {
    margin-top: 20px;
    color: #555;
}

/* ================= 响应式设计 ================= */
@media (max-width: 768px) {
    .top-bar-inner {
        flex-direction: column;
        gap: 10px;
    }
    
    .top-left span {
        margin: 0 10px;
    }
    
    .top-right a {
        margin: 0 10px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content h2 {
        font-size: 1.3rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr 1fr;
    }
}