* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html, body {
    width: 100vw !important; /* 强制占满视口宽度 */
    height: 100%;
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden !important; /* 禁止横向滚动 */
    overflow-y: auto;
    scroll-behavior: smooth;
}

.main-container {
    width: 100vw !important;
    min-height: 100vh;
    padding: 0 !important;
    margin: 0 !important;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用样式 */
section {
    padding: 30px 0;
    scroll-margin-top: 100px;
}

h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark);
    text-align: center;
}

h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--dark);
    position: relative;
    display: inline-block;
}

h2::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 25px 0 15px;
    color: var(--dark);
}

p {
    font-size: 17px;
    color: var(--gray);
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    background: #0E4BDB;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.3);
}

.btn-outline {
    background: var(--white);
    border: 2px solid var(--primary);
    color: var(--primary);
    margin-left: 15px;
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.text-center {
    text-align: center;
}

.mb-40 {
    margin-bottom: 40px;
}