/* --- Global Styles & Variables --- */
:root {
    --primary-dark-slate-blue: #465A69;
    --primary-white: #FFFFFF;
    --secondary-light-grey: #F0F2F5;
    --secondary-charcoal: #333333;
    --accent-bright-blue: #007BFF;
    --font-primary: 'Roboto', 'Noto Sans TC', sans-serif;
}

body {
    margin: 0;
    font-family: var(--font-primary);
    line-height: 1.6;
    background-color: var(--primary-white);
    color: var(--secondary-charcoal);
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

h1, h2, h3 {
    font-weight: 700;
}

a {
    text-decoration: none;
    color: var(--accent-bright-blue);
}

ul {
    list-style: none;
    padding: 0;
}

/* --- Header & Navigation Bar --- */
.main-header {
    background-color: var(--primary-dark-slate-blue);
    padding: 0.5rem 0; /* 微調 padding 令導覽列更精緻 */
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* --- 這部分已被修改 --- */
.navbar-logo {
    display: flex;
    align-items: center;
}

.navbar-logo img {
    height: 65px; /* 設定 Logo 的高度為 45px，你可以按需要調整 */
    width: auto;
}
/* --- 修改結束 --- */


.navbar-menu {
    display: flex;
    gap: 1.5rem;
}

.navbar-menu li a {
    color: var(--primary-white);
    font-weight: 400;
    transition: color 0.3s ease;
}

.navbar-menu li a:hover {
    color: var(--accent-bright-blue);
}


/* --- Hero Section --- */
.hero-section {
    background-color: var(--primary-dark-slate-blue);
    color: var(--primary-white);
    text-align: center;
    padding: 6rem 0;
}

.hero-title {
    font-size: 2.8rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

.btn {
    padding: 0.8rem 1.6rem;
    border-radius: 5px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--accent-bright-blue);
    color: var(--primary-white);
}

.btn-primary:hover {
    background-color: #0056b3; /* A darker shade of the accent blue */
}


/* --- Services Section --- */
.services-section {
    padding: 4rem 0;
    background-color: var(--secondary-light-grey);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    text-align: center;
}

.service-card {
    background-color: var(--primary-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.07);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-dark-slate-blue);
    margin-bottom: 1rem;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-dark-slate-blue);
}


/* --- Footer --- */
.main-footer {
    background-color: var(--primary-dark-slate-blue);
    color: var(--primary-white);
    padding-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding-bottom: 2rem;
}

.footer-logo p {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
}
.footer-tagline {
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.8;
}

.footer-links h4, .footer-contact h4 {
    margin-bottom: 1rem;
    color: var(--accent-bright-blue);
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links ul li a {
    color: var(--primary-white);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links ul li a:hover {
    opacity: 1;
}

.footer-contact p {
    margin: 0.3rem 0;
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid #5a7285; /* Slightly lighter than the background */
    text-align: center;
    padding: 1rem 0;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* --- About Us Page Styles --- */

.page-header {
    background-color: var(--secondary-light-grey);
    padding: 2.5rem 0;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

.page-title {
    font-size: 2.5rem;
    color: var(--primary-dark-slate-blue);
    margin: 0;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--secondary-charcoal);
    margin-top: 0.5rem;
    opacity: 0.8;
}

.about-section {
    padding: 4rem 0;
}

.about-content-block {
    max-width: 800px;
    margin: 0 auto 3.5rem auto; /* 水平置中，及下方距離 */
}

.about-content-block h2 {
    font-size: 2rem;
    color: var(--primary-dark-slate-blue);
    margin-bottom: 1.5rem;
    text-align: center;
}

.about-content-block p, .about-content-block li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444;
}

.about-content-block ul {
    list-style: disc;
    padding-left: 25px;
}

.about-content-block li {
    margin-bottom: 1rem;
}

/* Feature Grid for "Why Choose Us?" section */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.feature-card {
    background-color: var(--secondary-light-grey);
    padding: 2rem;
    border-radius: 8px;
}

.feature-icon {
    font-size: 3rem;
    color: var(--accent-bright-blue);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--primary-dark-slate-blue);
}

.feature-card p {
    font-size: 1rem;
    line-height: 1.6;
}