/* 
 * ⚡ 精简图标样式 - 只包含首页使用的图标
 * 替代 Font Awesome 的 151 kB 字体文件
 * 使用 SVG 作为背景图，无需加载字体
 */

.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    /* 默认浅灰色 - 可通过父元素 color 覆盖 */
    color: #9CA3AF;
}

/* 上传图标 */
.icon-upload {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 640 512'%3E%3Cpath fill='currentColor' d='M537.6 226.6c4.1-10.7 6.4-22.4 6.4-34.6 0-53-43-96-96-96-19.7 0-38.1 6-53.3 16.2C367 64.2 315.3 32 256 32c-88.4 0-160 71.6-160 160 0 2.7.1 5.4.2 8.1C40.2 219.8 0 273.2 0 336c0 79.5 64.5 144 144 144h368c70.7 0 128-57.3 128-128 0-61.9-44-113.6-102.4-125.4zM393.4 288H328v112c0 8.8-7.2 16-16 16h-48c-8.8 0-16-7.2-16-16V288h-65.4c-14.3 0-21.4-17.2-11.3-27.3l105.4-105.4c6.2-6.2 16.4-6.2 22.6 0l105.4 105.4c10.1 10.1 2.9 27.3-11.3 27.3z'/%3E%3C/svg%3E");
}

/* 关闭图标 */
.icon-times {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 352 512'%3E%3Cpath fill='currentColor' d='M242.72 256l100.07-100.07c12.28-12.28 12.28-32.19 0-44.48l-22.24-22.24c-12.28-12.28-32.19-12.28-44.48 0L176 189.28 75.93 89.21c-12.28-12.28-32.19-12.28-44.48 0L9.21 111.45c-12.28 12.28-12.28 32.19 0 44.48L109.28 256 9.21 356.07c-12.28 12.28-12.28 32.19 0 44.48l22.24 22.24c12.28 12.28 32.2 12.28 44.48 0L176 322.72l100.07 100.07c12.28 12.28 32.2 12.28 44.48 0l22.24-22.24c12.28-12.28 12.28-32.19 0-44.48L242.72 256z'/%3E%3C/svg%3E");
}

/* 加载中图标（旋转动画） */
.icon-spinner {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M304 48c0 26.51-21.49 48-48 48s-48-21.49-48-48 21.49-48 48-48 48 21.49 48 48zm-48 368c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zm208-208c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zM96 256c0-26.51-21.49-48-48-48S0 229.49 0 256s21.49 48 48 48 48-21.49 48-48zm12.922 99.078c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.491-48-48-48zm294.156 0c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.49-48-48-48zM108.922 60.922c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.491-48-48-48z'/%3E%3C/svg%3E");
    animation: fa-spin 1s infinite linear;
}

@keyframes fa-spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* 魔法图标 */
.icon-magic {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M224 96l16-32 32-16-32-16-16-32-16 32-32 16 32 16 16 32zM80 160l26.66-53.33L160 80l-53.34-26.67L80 0 53.34 53.33 0 80l53.34 26.67L80 160zm352 128l-26.66 53.33L352 368l53.34 26.67L432 448l26.66-53.33L512 368l-53.34-26.67L432 288zm70.62-193.77L417.77 9.38C411.53 3.12 403.34 0 395.15 0c-8.19 0-16.38 3.12-22.63 9.38L9.38 372.52c-12.5 12.5-12.5 32.76 0 45.25l84.85 84.85c6.25 6.25 14.44 9.38 22.62 9.38 8.19 0 16.38-3.12 22.63-9.38l363.15-363.15c12.5-12.48 12.5-32.75 0-45.24zM359.45 203.46l-50.91-50.91 86.6-86.6 50.91 50.91-86.6 86.6z'/%3E%3C/svg%3E");
}

/* 图片图标 */
.icon-image {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M464 448H48c-26.51 0-48-21.49-48-48V112c0-26.51 21.49-48 48-48h416c26.51 0 48 21.49 48 48v288c0 26.51-21.49 48-48 48zM112 120c-30.928 0-56 25.072-56 56s25.072 56 56 56 56-25.072 56-56-25.072-56-56-56zM64 384h384V272l-87.515-87.515c-4.686-4.686-12.284-4.686-16.971 0L208 320l-55.515-55.515c-4.686-4.686-12.284-4.686-16.971 0L64 336v48z'/%3E%3C/svg%3E");
}

/* 多图片图标 */
.icon-images {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 576 512'%3E%3Cpath fill='currentColor' d='M480 416v16c0 26.51-21.49 48-48 48H48c-26.51 0-48-21.49-48-48V176c0-26.51 21.49-48 48-48h16v208c0 44.112 35.888 80 80 80h336zm96-80V80c0-26.51-21.49-48-48-48H144c-26.51 0-48 21.49-48 48v256c0 26.51 21.49 48 48 48h384c26.51 0 48-21.49 48-48zM256 128c0 26.51-21.49 48-48 48s-48-21.49-48-48 21.49-48 48-48 48 21.49 48 48zm-96 144l55.515-55.515c4.686-4.686 12.284-4.686 16.971 0L272 256l135.515-135.515c4.686-4.686 12.284-4.686 16.971 0L512 208v144H160v-80z'/%3E%3C/svg%3E");
}

/* 下载图标 */
.icon-download {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M216 0h80c13.3 0 24 10.7 24 24v168h87.7c17.8 0 26.7 21.5 14.1 34.1L269.7 378.3c-7.5 7.5-19.8 7.5-27.3 0L90.1 226.1c-12.6-12.6-3.7-34.1 14.1-34.1H192V24c0-13.3 10.7-24 24-24zm296 376v112c0 13.3-10.7 24-24 24H24c-13.3 0-24-10.7-24-24V376c0-13.3 10.7-24 24-24h146.7l49 49c20.1 20.1 52.5 20.1 72.6 0l49-49H488c13.3 0 24 10.7 24 24zm-124 88c0-11-9-20-20-20s-20 9-20 20 9 20 20 20 20-9 20-20zm64 0c0-11-9-20-20-20s-20 9-20 20 9 20 20 20 20-9 20-20z'/%3E%3C/svg%3E");
}

/* 分享图标 */
.icon-share {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M352 320c-22.608 0-43.387 7.819-59.79 20.895l-102.486-64.054a96.551 96.551 0 0 0 0-41.683l102.486-64.054C308.613 184.181 329.392 192 352 192c53.019 0 96-42.981 96-96S405.019 0 352 0s-96 42.981-96 96c0 7.158.79 14.13 2.276 20.841L155.79 180.895C139.387 167.819 118.608 160 96 160c-53.019 0-96 42.981-96 96s42.981 96 96 96c22.608 0 43.387-7.819 59.79-20.895l102.486 64.054A96.301 96.301 0 0 0 256 416c0 53.019 42.981 96 96 96s96-42.981 96-96-42.981-96-96-96z'/%3E%3C/svg%3E");
}

/* 分享图标（另一个版本）*/
.icon-share-alt {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 576 512'%3E%3Cpath fill='currentColor' d='M568.482 177.448L424.479 313.433C409.3 327.768 384 317.14 384 295.985v-71.963c-144.575.97-205.566 35.113-164.775 171.353 4.483 14.973-12.846 26.567-25.006 17.33C155.252 383.105 120 326.488 120 269.339c0-143.937 117.599-172.5 264-173.312V24.015c0-21.174 25.317-31.768 40.479-17.448l144.003 135.988c10.02 9.463 10.028 25.425 0 34.893zM384 379.128V448H64V128h50.916a11.99 11.99 0 0 0 8.648-3.693c14.953-15.568 32.237-27.89 51.014-37.676C185.708 80.83 181.584 64 169.033 64H48C21.49 64 0 85.49 0 112v352c0 26.51 21.49 48 48 48h352c26.51 0 48-21.49 48-48v-88.806c0-8.288-8.197-14.066-16.011-11.302a71.83 71.83 0 0 1-34.189 3.377c-7.27-1.046-13.8 4.514-13.8 11.859z'/%3E%3C/svg%3E");
}

/* 更多选项（竖直三点）图标 */
.icon-ellipsis-v {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 192 512'%3E%3Cpath fill='currentColor' d='M96 184c39.8 0 72 32.2 72 72s-32.2 72-72 72-72-32.2-72-72 32.2-72 72-72zM24 80c0 39.8 32.2 72 72 72s72-32.2 72-72S135.8 8 96 8 24 40.2 24 80zm0 352c0 39.8 32.2 72 72 72s72-32.2 72-72-32.2-72-72-72-72 32.2-72 72z'/%3E%3C/svg%3E");
}

/* 下拉箭头图标 */
.icon-chevron-down {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z'/%3E%3C/svg%3E");
}

/* 用户图标 */
.icon-user {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M224 256c70.7 0 128-57.3 128-128S294.7 0 224 0 96 57.3 96 128s57.3 128 128 128zm89.6 32h-16.7c-22.2 10.2-46.9 16-72.9 16s-50.6-5.8-72.9-16h-16.7C60.2 288 0 348.2 0 422.4V464c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48v-41.6c0-74.2-60.2-134.4-134.4-134.4z'/%3E%3C/svg%3E");
}

/* 登出图标 */
.icon-sign-out {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M497 273L329 441c-15 15-41 4.5-41-17v-96H152c-13.3 0-24-10.7-24-24v-96c0-13.3 10.7-24 24-24h136V88c0-21.4 25.9-32 41-17l168 168c9.3 9.4 9.3 24.6 0 34zM192 436v-40c0-6.6-5.4-12-12-12H96c-17.7 0-32-14.3-32-32V160c0-17.7 14.3-32 32-32h84c6.6 0 12-5.4 12-12V76c0-6.6-5.4-12-12-12H96c-53 0-96 43-96 96v192c0 53 43 96 96 96h84c6.6 0 12-5.4 12-12z'/%3E%3C/svg%3E");
}

/* 菜单栏图标（汉堡菜单） */
.icon-bars {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M16 132h416c8.837 0 16-7.163 16-16V76c0-8.837-7.163-16-16-16H16C7.163 60 0 67.163 0 76v40c0 8.837 7.163 16 16 16zm0 160h416c8.837 0 16-7.163 16-16v-40c0-8.837-7.163-16-16-16H16c-8.837 0-16 7.163-16 16v40c0 8.837 7.163 16 16 16zm0 160h416c8.837 0 16-7.163 16-16v-40c0-8.837-7.163-16-16-16H16c-8.837 0-16 7.163-16 16v40c0 8.837 7.163 16 16 16z'/%3E%3C/svg%3E");
}

/* ============ 新增图标（用于其他页面）============ */

/* 左箭头 */
.icon-arrow-left {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M257.5 445.1l-22.2 22.2c-9.4 9.4-24.6 9.4-33.9 0L7 273c-9.4-9.4-9.4-24.6 0-33.9L201.4 44.7c9.4-9.4 24.6-9.4 33.9 0l22.2 22.2c9.5 9.5 9.3 25-.4 34.3L136.6 216H424c13.3 0 24 10.7 24 24v32c0 13.3-10.7 24-24 24H136.6l120.5 114.8c9.8 9.3 10 24.8.4 34.3z'/%3E%3C/svg%3E");
}

/* 右箭头 */
.icon-chevron-right {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 512'%3E%3Cpath fill='currentColor' d='M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z'/%3E%3C/svg%3E");
}

/* 左箭头（分页） */
.icon-chevron-left {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 512'%3E%3Cpath fill='currentColor' d='M34.52 239.03L228.87 44.69c9.37-9.37 24.57-9.37 33.94 0l22.67 22.67c9.36 9.36 9.37 24.52.04 33.9L131.49 256l154.02 154.75c9.34 9.38 9.32 24.54-.04 33.9l-22.67 22.67c-9.37 9.37-24.57 9.37-33.94 0L34.52 272.97c-9.37-9.37-9.37-24.57 0-33.94z'/%3E%3C/svg%3E");
}

/* 错误圆圈 */
.icon-exclamation-circle {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z'/%3E%3C/svg%3E");
}

/* 刷新/同步 */
.icon-sync {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M440.65 12.57l4 82.77A247.16 247.16 0 0 0 255.83 8C134.73 8 33.91 94.92 12.29 209.82A12 12 0 0 0 24.09 224h49.05a12 12 0 0 0 11.67-9.26 175.91 175.91 0 0 1 317-56.94l-101.46-4.86a12 12 0 0 0-12.57 12v47.41a12 12 0 0 0 12 12H500a12 12 0 0 0 12-12V12a12 12 0 0 0-12-12h-47.37a12 12 0 0 0-11.98 12.57zM255.83 432a175.61 175.61 0 0 1-146-77.8l101.8 4.87a12 12 0 0 0 12.57-12v-47.4a12 12 0 0 0-12-12H12a12 12 0 0 0-12 12V500a12 12 0 0 0 12 12h47.35a12 12 0 0 0 12-12.6l-4.15-82.57A247.17 247.17 0 0 0 255.83 504c121.11 0 221.93-86.92 243.55-201.82a12 12 0 0 0-11.8-14.18h-49.05a12 12 0 0 0-11.67 9.26A175.86 175.86 0 0 1 255.83 432z'/%3E%3C/svg%3E");
}

/* 链接 */
.icon-link {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M326.612 185.391c59.747 59.809 58.927 155.698.36 214.59-.11.12-.24.25-.36.37l-67.2 67.2c-59.27 59.27-155.699 59.262-214.96 0-59.27-59.26-59.27-155.7 0-214.96l37.106-37.106c9.84-9.84 26.786-3.3 27.294 10.606.648 17.722 3.826 35.527 9.69 52.721 1.986 5.822.567 12.262-3.783 16.612l-13.087 13.087c-28.026 28.026-28.905 73.66-1.155 101.96 28.024 28.579 74.086 28.749 102.325.51l67.2-67.19c28.191-28.191 28.073-73.757 0-101.83-3.701-3.694-7.429-6.564-10.341-8.569a16.037 16.037 0 0 1-6.947-12.606c-.396-10.567 3.348-21.456 11.698-29.806l21.054-21.055c5.521-5.521 14.182-6.199 20.584-1.731a152.482 152.482 0 0 1 20.522 17.197zM467.547 44.449c-59.261-59.262-155.69-59.27-214.96 0l-67.2 67.2c-.12.12-.25.25-.36.37-58.566 58.892-59.387 154.781.36 214.59a152.454 152.454 0 0 0 20.521 17.196c6.402 4.468 15.064 3.789 20.584-1.731l21.054-21.055c8.35-8.35 12.094-19.239 11.698-29.806a16.037 16.037 0 0 0-6.947-12.606c-2.912-2.005-6.64-4.875-10.341-8.569-28.073-28.073-28.191-73.639 0-101.83l67.2-67.19c28.239-28.239 74.3-28.069 102.325.51 27.75 28.3 26.872 73.934-1.155 101.96l-13.087 13.087c-4.35 4.35-5.769 10.79-3.783 16.612 5.864 17.194 9.042 34.999 9.69 52.721.509 13.906 17.454 20.446 27.294 10.606l37.106-37.106c59.271-59.259 59.271-155.699.001-214.959z'/%3E%3C/svg%3E");
}

/* 加号 */
.icon-plus {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z'/%3E%3C/svg%3E");
}

/* 警告三角 */
.icon-exclamation-triangle {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 576 512'%3E%3Cpath fill='currentColor' d='M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z'/%3E%3C/svg%3E");
}

/* 删除 */
.icon-trash {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M432 32H312l-9.4-18.7A24 24 0 0 0 281.1 0H166.8a23.72 23.72 0 0 0-21.4 13.3L136 32H16A16 16 0 0 0 0 48v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16V48a16 16 0 0 0-16-16zM53.2 467a48 48 0 0 0 47.9 45h245.8a48 48 0 0 0 47.9-45L416 128H32z'/%3E%3C/svg%3E");
}

/* 重试 */
.icon-redo {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M500.33 0h-47.41a12 12 0 0 0-12 12.57l4 82.76A247.42 247.42 0 0 0 256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248a12 12 0 0 0-12-12h-80a12 12 0 0 0-12 12c0 91.74-74.25 166-166 166S68 347.77 68 256 142.25 90 234 90a165.14 165.14 0 0 1 146 88.8l-101.3-4.87a12 12 0 0 0-12.57 12v47.41a12 12 0 0 0 12 12H488a12 12 0 0 0 12-12V12a12 12 0 0 0-12-12z'/%3E%3C/svg%3E");
}

/* 猫 */
.icon-cat {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M290.59 192c-20.18 0-106.82 1.98-162.59 85.95V192c0-52.94-43.06-96-96-96-17.67 0-32 14.33-32 32s14.33 32 32 32c17.64 0 32 14.36 32 32v256c0 35.3 28.7 64 64 64h176c8.84 0 16-7.16 16-16v-16c0-17.67-14.33-32-32-32h-32l128-96v144c0 8.84 7.16 16 16 16h32c8.84 0 16-7.16 16-16V289.86c-10.29 2.67-20.89 4.54-32 4.54-61.81 0-113.52-44.05-125.41-102.4zM448 96h-64l-64-64v134.4c0 53.02 42.98 96 96 96s96-42.98 96-96V32l-64 64zm-72 80c-8.84 0-16-7.16-16-16s7.16-16 16-16 16 7.16 16 16-7.16 16-16 16zm80 0c-8.84 0-16-7.16-16-16s7.16-16 16-16 16 7.16 16 16-7.16 16-16 16z'/%3E%3C/svg%3E");
}

/* 邮件 */
.icon-envelope {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z'/%3E%3C/svg%3E");
}

/* 对勾 */
.icon-check {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z'/%3E%3C/svg%3E");
}

/* 复制 */
.icon-copy {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='currentColor' d='M320 448v40c0 13.255-10.745 24-24 24H24c-13.255 0-24-10.745-24-24V120c0-13.255 10.745-24 24-24h72v296c0 30.879 25.121 56 56 56h168zm0-344V0H152c-13.255 0-24 10.745-24 24v368c0 13.255 10.745 24 24 24h272c13.255 0 24-10.745 24-24V128H344c-13.2 0-24-10.8-24-24zm120.971-31.029L375.029 7.029A24 24 0 0 0 358.059 0H352v96h96v-6.059a24 24 0 0 0-7.029-16.97z'/%3E%3C/svg%3E");
}

/* 成功圆圈 */
.icon-check-circle {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z'/%3E%3C/svg%3E");
}

/* 信息圆圈 */
.icon-info-circle {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='currentColor' d='M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z'/%3E%3C/svg%3E");
}

/* ============ 社交媒体品牌图标 ============ */

/* Google 图标 */
.fab.fa-google {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 488 512'%3E%3Cpath fill='%23EA4335' d='M488 261.8C488 403.3 391.1 504 248 504 110.8 504 0 393.2 0 256S110.8 8 248 8c66.8 0 123 24.5 166.3 64.9l-67.5 64.9C258.5 52.6 94.3 116.6 94.3 256c0 86.5 69.1 156.6 153.7 156.6 98.2 0 135-70.4 140.8-106.9H248v-85.3h236.1c2.3 12.7 3.9 24.9 3.9 41.4z'/%3E%3C/svg%3E");
}

/* Twitter/X 图标 */
.fab.fa-twitter {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='white' d='M389.2 48h70.6L305.6 224.2 487 464H345L233.7 318.6 106.5 464H35.8L200.7 275.5 26.8 48H172.4L272.9 180.9 389.2 48zM364.4 421.8h39.1L151.1 88h-42L364.4 421.8z'/%3E%3C/svg%3E");
}

/* Facebook 图标 */
.fab.fa-facebook-f {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 512'%3E%3Cpath fill='%231877F2' d='M279.14 288l14.22-92.66h-88.91v-60.13c0-25.35 12.42-50.06 52.24-50.06h40.42V6.26S260.43 0 225.36 0c-73.22 0-121.08 44.38-121.08 124.72v70.62H22.89V288h81.39v224h100.17V288z'/%3E%3C/svg%3E");
}

/* Pinterest 图标 */
.fab.fa-pinterest {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 496 512'%3E%3Cpath fill='%23E60023' d='M496 256c0 137-111 248-248 248-25.6 0-50.2-3.9-73.4-11.1 10.1-16.5 25.2-43.5 30.8-65 3-11.6 15.4-59 15.4-59 8.1 15.4 31.7 28.5 56.8 28.5 74.8 0 128.7-68.8 128.7-154.3 0-81.9-66.9-143.2-152.9-143.2-107 0-163.9 71.8-163.9 150.1 0 36.4 19.4 81.7 50.3 96.1 4.7 2.2 7.2 1.2 8.3-3.3.8-3.4 5-20.3 6.9-28.1.6-2.5.3-4.7-1.7-7.1-10.1-12.5-18.3-35.3-18.3-56.6 0-54.7 41.4-107.6 112-107.6 60.9 0 103.6 41.5 103.6 100.9 0 67.1-33.9 113.6-78 113.6-24.3 0-42.6-20.1-36.7-44.8 7-29.5 20.5-61.3 20.5-82.6 0-19-10.2-34.9-31.4-34.9-24.9 0-44.9 25.7-44.9 60.2 0 22 7.4 36.8 7.4 36.8s-24.5 103.8-29 123.2c-5 21.4-3 51.6-.9 71.2C65.4 450.9 0 361.1 0 256 0 119 111 8 248 8s248 111 248 248z'/%3E%3C/svg%3E");
}

/* Instagram 图标 */
.fab.fa-instagram {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='url(%23instagram-gradient)' d='M224.1 141c-63.6 0-114.9 51.3-114.9 114.9s51.3 114.9 114.9 114.9S339 319.5 339 255.9 287.7 141 224.1 141zm0 189.6c-41.1 0-74.7-33.5-74.7-74.7s33.5-74.7 74.7-74.7 74.7 33.5 74.7 74.7-33.6 74.7-74.7 74.7zm146.4-194.3c0 14.9-12 26.8-26.8 26.8-14.9 0-26.8-12-26.8-26.8s12-26.8 26.8-26.8 26.8 12 26.8 26.8zm76.1 27.2c-1.7-35.9-9.9-67.7-36.2-93.9-26.2-26.2-58-34.4-93.9-36.2-37-2.1-147.9-2.1-184.9 0-35.8 1.7-67.6 9.9-93.9 36.1s-34.4 58-36.2 93.9c-2.1 37-2.1 147.9 0 184.9 1.7 35.9 9.9 67.7 36.2 93.9s58 34.4 93.9 36.2c37 2.1 147.9 2.1 184.9 0 35.9-1.7 67.7-9.9 93.9-36.2 26.2-26.2 34.4-58 36.2-93.9 2.1-37 2.1-147.8 0-184.8zM398.8 388c-7.8 19.6-22.9 34.7-42.6 42.6-29.5 11.7-99.5 9-132.1 9s-102.7 2.6-132.1-9c-19.6-7.8-34.7-22.9-42.6-42.6-11.7-29.5-9-99.5-9-132.1s-2.6-102.7 9-132.1c7.8-19.6 22.9-34.7 42.6-42.6 29.5-11.7 99.5-9 132.1-9s102.7-2.6 132.1 9c19.6 7.8 34.7 22.9 42.6 42.6 11.7 29.5 9 99.5 9 132.1s2.7 102.7-9 132.1z'/%3E%3Cdefs%3E%3ClinearGradient id='instagram-gradient' x1='0%25' y1='100%25' x2='100%25' y2='0%25'%3E%3Cstop offset='0%25' style='stop-color:%23FBE18A'/%3E%3Cstop offset='21%25' style='stop-color:%23FCBB45'/%3E%3Cstop offset='50%25' style='stop-color:%23F75274'/%3E%3Cstop offset='78%25' style='stop-color:%23D53692'/%3E%3Cstop offset='100%25' style='stop-color:%238F39CE'/%3E%3C/linearGradient%3E%3C/defs%3E%3C/svg%3E");
}

/* LinkedIn 图标 */
.fab.fa-linkedin,
.fab.fa-linkedin-in {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='%230A66C2' d='M416 32H31.9C14.3 32 0 46.5 0 64.3v383.4C0 465.5 14.3 480 31.9 480H416c17.6 0 32-14.5 32-32.3V64.3c0-17.8-14.4-32.3-32-32.3zM135.4 416H69V202.2h66.5V416zm-33.2-243c-21.3 0-38.5-17.3-38.5-38.5S80.9 96 102.2 96c21.2 0 38.5 17.3 38.5 38.5 0 21.3-17.2 38.5-38.5 38.5zm282.1 243h-66.4V312c0-24.8-.5-56.7-34.5-56.7-34.6 0-39.9 27-39.9 54.9V416h-66.4V202.2h63.7v29.2h.9c8.9-16.8 30.6-34.5 62.9-34.5 67.2 0 79.7 44.3 79.7 101.9V416z'/%3E%3C/svg%3E");
}