:root {
    --default-font-size: 16px;
    --container-width: 1000px;
    --body-bg-color: #dedede;
    --header-height: 80px;
    --header-bg-color: #fff;
    --primary-color: #2563eb;
    --footer-bg-color: #1f2937;
    --footer-text-color: #f3f4f6;
    --section-bg: #f8fafc;
    --background: #fff;
    --text-color: #1f2937;
}

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

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

ul,
ol {
    list-style: none;
}

html,
body {
    scroll-behavior: smooth;
    font-size: var(--default-font-size);
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    background-color: var(--body-bg-color);
    font-weight: 400;
}

.container {
    max-width: var(--container-width);
    height: 100%;
    margin: auto;
    position: relative;
    padding: 0 15px;
}

.block-header {
    font-size: 2rem;
    text-align: center;
    position: relative;
    margin-bottom: 3rem;
}

.block-header::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #60a5fa);
    border-radius: 2px;
}