/* --- 全局样式重置与变量 --- */
:root {
    --primary-dark: #2b2b2b;
    --accent-brown: #4a3b32;
    --bg-light: #f9f7f5;
    --text-main: #333333;
    --text-gray: #666666;
    --white: #ffffff;
    --container-width: 1200px;
}

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

body {
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* 图片自适应处理 */
img { max-width: 100%; display: block; object-fit: cover; width: 100%; height: 100%; }

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

/* --- 顶部导航 --- */
header {
    background-color: var(--primary-dark);
    height: 60px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.logo {
    color: var(--white);
    font-size: 20px;
    font-weight: bold;
    letter-spacing: 2px;
}

/* --- Hero Banner (轮播图区域 - 高度自适应) --- */
.hero {
    margin-top: 60px;
    position: relative;
    width: 100%;
    overflow: hidden;
    background-color: #000; /* 防止加载时闪烁 */
}

/* 轮播容器 */
.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    width: 100%;
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

/* 轮播图上的文字遮罩 */
.hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.3); /* 稍微压暗背景以便看清文字 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--white);
    text-align: center;
    pointer-events: none; /* 让点击穿透到图片 */
}

.hero-overlay h1 {
    font-size: 56px; /* 放大字体 */
    margin-bottom: 15px;
    font-weight: normal;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero-overlay p {
    font-size: 24px;
    letter-spacing: 4px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

/* 轮播控制按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.carousel-btn:hover { background: rgba(0,0,0,0.6); }
.carousel-btn.prev { left: 30px; }
.carousel-btn.next { right: 30px; }
.carousel-btn svg { width: 24px; height: 24px; fill: white; }

/* 底部指示点 */
.carousel-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    background-color: rgba(255,255,255,0.4);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}
.dot.active { background-color: #fff; transform: scale(1.2); }


/* --- 通用大板块设置 (900px 高度适配) --- */
.large-section {
    min-height: 900px; /* 核心要求：固定高度 */
    padding: 100px 0;  /* 增加上下内边距 */
    display: flex;
    flex-direction: column;
    justify-content: center; /* 内容垂直居中 */
}

.section-header {
    text-align: center;
    margin-bottom: 80px; /* 增大标题下方的间距 */
}

.section-title {
    font-size: 36px; /* 放大标题 */
    font-weight: bold;
    color: #3e2c20;
    position: relative;
    display: inline-block;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-brown);
}

.section-desc {
    margin-top: 30px;
    color: #6b5a4e;
    font-size: 18px; /* 放大描述文字 */
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* --- Section 1: 意式美学 --- */
.section-aesthetics { background-color: var(--white); }

.split-layout {
    display: flex;
    align-items: center;
    gap: 80px; /* 增大间距 */
}

.split-img {
    flex: 1;
    height: 400px; /* 指定图片高度以匹配900px的版块 */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.split-content { flex: 1;height:400px;display: flex;gap: 40px;flex-direction: column;justify-content: center;}

.feature-item { /*margin-bottom: 40px;*/ } /* 增大条目间距 */

.feature-item h3 {
    font-size: 24px; /* 放大子标题 */
    color: #3e2c20;
    /*margin-bottom: 15px;*/
}

.feature-item p {
    font-size: 16px; /* 放大正文 */
    color: #6b5a4e;
    line-height: 2;
}

/* --- Section 2: 探访美学空间 --- */
.section-showroom { background-color: #f4f1ed; }

.showroom-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
    height: 500px; /* 卡片本身的高度也要增加 */
}

.showroom-info {
    flex: 1;
    padding: 50px; /* 大幅增加内边距 */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.showroom-info h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #3e2c20;
}

.showroom-info > p {
    font-size: 16px;
    color: #6b5a4e;
    margin-bottom: 50px;
}

.info-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    font-size: 16px;
    color: #6b5a4e;
}

.info-list svg {
    width: 24px;
    height: 24px;
    margin-right: 20px;
    fill: #3e2c20;
    margin-top: 3px;
}

.showroom-img {
    flex: 1.2;
}

/* --- Section 3: 开启定制之旅 --- */
.section-contact { background-color: var(--white); }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    height: 500px; /* 网格高度 */
}

.contact-card {
    background-color: #3e332c;
    color: var(--white);
    padding: 50px; /* 增加内边距 */
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-card h3 {
    font-size: 30px;
    margin-bottom: 50px;
    font-weight: normal;
}

.contact-row {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.contact-row:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

.contact-icon {
    width: 60px; /* 放大图标圆圈 */
    height: 60px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 30px;
}

.contact-icon svg { width: 24px; height: 24px; fill: var(--white); }

.contact-text small {
    display: block;
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 8px;
}

.contact-text span {
    font-size: 28px; /* 放大电话号码 */
    font-weight: bold;
    letter-spacing: 1px;
}

.contact-img {
    border-radius: 20px;
    overflow: hidden;
    height: 100%;
}

/* --- Footer --- */
footer {
    background-color: #1a1a1a;
    color: #888;
    padding: 60px 0 30px;
    font-size: 14px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid #333;
    margin-bottom: 30px;
}

.footer-logo { color: var(--white); font-size: 24px; font-weight: bold; letter-spacing: 1px; }
.footer-links a { margin-left: 30px; transition: color 0.3s; font-size: 14px;}
.footer-links a:hover { color: var(--white); }
.footer-bottom { text-align: center; }

/* --- 响应式调整 --- */
@media (max-width: 900px) {
    .large-section { min-height: auto; padding: 60px 0; }
    .split-layout, .showroom-card, .contact-grid { flex-direction: column; display: flex; height: auto; }
    .showroom-card { flex-direction: column-reverse; }
    .split-img, .showroom-img, .contact-img { height: 300px; width: 100%; }
    .hero-overlay h1 { font-size: 36px; }
    .section-title { font-size: 32px; }
    .carousel-btn { width: 40px; height: 40px; }
    .carousel-btn.prev { left: 10px; }
    .carousel-btn.next { right: 10px; }
}