* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    touch-action: manipulation;
}
html {
    font-family: "Noto Serif TC", "思源宋體", -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    color: #222;
    background-color: #f8f9fa;
    scroll-behavior: smooth;
}
body {
    line-height: 1.6;
    overflow-x: hidden;
}
ul, li {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
}
button {
    border: none;
    cursor: pointer;
    font-family: inherit;
}
img {
    width: 100%;
    display: block;
    image-rendering: -webkit-optimize-contrast;
}
.flex-row { display: flex; flex-direction: row; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.container {
    width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
    overflow-x: hidden;
}
:root {
    --dark-navy: #1a2844;
    --orange-main: #ff782e;
    --text-dark: #212529;
    --text-gray: #6c757d;
    --white: #ffffff;
    --radius-md: 12px;
    --radius-lg: 16px;
    --theme-highlight: #ff782e;
}
.floating-fixed-btn-group {
    position: fixed;
    right: 30px;
    bottom: 80px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    color: var(--white);
    font-size: 12px;
    transition: opacity 0.2s ease;
}
.writer-reg-btn { background: #ffc107; }
.submit-work-btn { background: var(--orange-main); }
.back-top-btn {
    background: var(--white);
    color: var(--text-dark);
    font-size: 20px;
    opacity: 0;
    pointer-events: none;
}
@media screen and (max-width:1280px) {
    .container { width: 100%; }
}
@media screen and (max-width:768px) {
    html { font-size: 13px; }
    .floating-fixed-btn-group { right: 15px; }
    .float-btn { width: 48px; height: 48px; }
}