/* 本地图标 - 替换 Font Awesome */

.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    stroke-width: 0;
    stroke: currentColor;
    fill: currentColor;
    vertical-align: middle;
}

/* GitHub 图标 */
.fab.fa-github::before,
.icon-github::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* 邮件图标 */
.fas.fa-envelope::before,
.icon-email::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M1.5 8.67v8.58a3 3 0 003 3h15a3 3 0 003-3V8.67l-8.928 5.493a3 3 0 01-3.144 0L1.5 8.67z'/%3E%3Cpath d='M22.5 6.908V6.75a3 3 0 00-3-3h-15a3 3 0 00-3 3v.158l9.714 5.978a1.5 1.5 0 001.572 0L22.5 6.908z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* 搜索图标 */
.fas.fa-search::before,
.icon-search::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M10.5 3.75a6.75 6.75 0 100 13.5 6.75 6.75 0 000-13.5zM2.25 10.5a8.25 8.25 0 1114.59 5.28l4.69 4.69a.75.75 0 11-1.06 1.06l-4.69-4.69A8.25 8.25 0 012.25 10.5z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* 代码图标 */
.fas.fa-code::before,
.icon-code::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M14.447 3.027a.75.75 0 01.527.92l-4.5 16.5a.75.75 0 01-1.448-.394l4.5-16.5a.75.75 0 01.921-.526zM16.72 6.22a.75.75 0 011.06 0l5.25 5.25a.75.75 0 010 1.06l-5.25 5.25a.75.75 0 11-1.06-1.06L21.44 12l-4.72-4.72a.75.75 0 010-1.06zm-9.44 0a.75.75 0 010 1.06L2.56 12l4.72 4.72a.75.75 0 11-1.06 1.06L.97 12.53a.75.75 0 010-1.06l5.25-5.25a.75.75 0 011.06 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* 文章图标 */
.fas.fa-file-alt::before,
.icon-article::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M5.625 1.5c-1.036 0-1.875.84-1.875 1.875v17.25c0 1.035.84 1.875 1.875 1.875h12.75c1.035 0 1.875-.84 1.875-1.875V12.75A3.75 3.75 0 0016.5 9h-1.875a1.875 1.875 0 01-1.875-1.875V5.25A3.75 3.75 0 009 1.5H5.625zM7.5 15a.75.75 0 01.75-.75h7.5a.75.75 0 010 1.5h-7.5A.75.75 0 017.5 15zm.75 2.25a.75.75 0 000 1.5H12a.75.75 0 000-1.5H8.25z' clip-rule='evenodd'/%3E%3Cpath d='M12.971 1.816A5.23 5.23 0 0114.25 5.25v1.875c0 .207.168.375.375.375H16.5a5.23 5.23 0 013.434 1.279 9.768 9.768 0 00-6.963-6.963z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}