/* 全域設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 60px 20px;
}

.bg-light {
    background: #f4f7f6;
}

/* 導覽列 */
nav {
    background: #fff;
    height: 70px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #004a99;
}

.logo span {
    font-size: 0.9rem;
    color: #666;
    margin-left: 5px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    margin-left: 30px;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #004a99;
}

/* 主視覺區 */
.hero {
    background: linear-gradient(rgba(0, 74, 153, 0.7), rgba(0, 74, 153, 0.7)), 
                url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&q=80&w=2070') no-repeat center center/cover;
    height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background: #ff7e5f;
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background 0.3s;
}

.btn:hover {
    background: #feb47b;
}

/* 標題設定 */
.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    background: #004a99;
    height: 4px;
    width: 60px;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

/* 產品卡片 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    color: #004a99;
    margin-bottom: 15px;
}

/* 聯絡資訊 */
.contact-info {
    text-align: center;
    font-size: 1.1rem;
}

.contact-info p {
    margin-bottom: 10px;
}

/* 頁尾 */
footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
}

/* 手機版適應 */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    nav ul { display: none; } /* 簡化版導覽列 */
}

/* ... 保留之前的 CSS 基礎 ... */

.hero {
    background: linear-gradient(rgba(0, 40, 80, 0.8), rgba(0, 40, 80, 0.8)), 
                url('https://images.unsplash.com/photo-1530124566582-aa37dd159a5b?auto=format&fit=crop&w=1500'); /* 塑膠原料相關圖 */
    background-size: cover;
    background-position: center;
    color: white;
    padding: 150px 0;
}

.card .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.2rem;
    color: #555;
}