/* 导入其他CSS文件 */
@import url('features-courses.css');
@import url('testimonials-footer.css');

/* 基础变量和重置 */
:root {
    --primary-color: #1387C0; /* 蓝色 */
    --secondary-color: #FAEDD1; /* 浅米色 */
    --accent-color: #FD6D2E; /* 橙色 */
    --text-color: #333333;
    --light-text: #ffffff;
    --dark-bg: #222222;
    --light-bg: #f9f9f9;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

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

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

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--light-text);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn:hover {
    background-color: #e05a1c; /* 深一点的橙色 */
    color: var(--light-text);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    width: 50%;
    height: 3px;
    background-color: var(--accent-color);
    bottom: -10px;
    left: 25%;
}

.section-header p {
    color: #777;
    font-size: 1.1rem;
}

/* 导航栏 */
header {
    background-color: var(--primary-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    color: var(--light-text);
    font-size: 1.8rem;
    font-weight: 700;
}

.logo h1 span {
    color: var(--secondary-color);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    color: var(--light-text);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    padding-bottom: 5px;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--secondary-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    left: 0;
    bottom: 0;
    transition: var(--transition);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.cart-link {
    position: relative;
}

#cart-count {
    position: absolute;
    top: -8px;
    right: -10px;
    background-color: var(--accent-color);
    color: var(--light-text);
    font-size: 0.7rem;
    width: 18px;
    height: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--light-text);
    cursor: pointer;
}

/* 英雄区 */
.hero {
    background: linear-gradient(rgba(19, 135, 192, 0.8), rgba(19, 135, 192, 0.9)), url('../images/hero-bg.jpg') no-repeat center center/cover;
    color: var(--light-text);
    padding: 100px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}