/*
 * 精简图标集：仅包含插件实际用到的图标，用内联 SVG + mask 实现。
 * 替代 libs/all.min.css + 四个 webfonts（约 1MB），此处仅约 4KB。
 * 保留 <i class="fas fa-xxx"> 的原有写法，颜色随 currentColor，随主题变化。
 */

i[class*="fa-"] {
    display: inline-block;
    line-height: 1;
    font-style: normal;
    flex-shrink: 0;
}

i[class*="fa-"]::before {
    content: '';
    display: block;
    width: 1em;
    height: 1em;
    background-color: currentColor;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

.fa-plus::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
}

.fa-ellipsis-h::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Ccircle cx='5' cy='12' r='1.8'/%3E%3Ccircle cx='12' cy='12' r='1.8'/%3E%3Ccircle cx='19' cy='12' r='1.8'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Ccircle cx='5' cy='12' r='1.8'/%3E%3Ccircle cx='12' cy='12' r='1.8'/%3E%3Ccircle cx='19' cy='12' r='1.8'/%3E%3C/svg%3E");
}

.fa-eye::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2.5 12S6 5.5 12 5.5 21.5 12 21.5 12 18 18.5 12 18.5 2.5 12 2.5 12z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2.5 12S6 5.5 12 5.5 21.5 12 21.5 12 18 18.5 12 18.5 2.5 12 2.5 12z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
}

.fa-eye-slash::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2.5 12S6 5.5 12 5.5 21.5 12 21.5 12 18 18.5 12 18.5 2.5 12 2.5 12z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M4 4l16 16'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2.5 12S6 5.5 12 5.5 21.5 12 21.5 12 18 18.5 12 18.5 2.5 12 2.5 12z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M4 4l16 16'/%3E%3C/svg%3E");
}

.fa-expand::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 4H4v5M15 4h5v5M9 20H4v-5M15 20h5v-5'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 4H4v5M15 4h5v5M9 20H4v-5M15 20h5v-5'/%3E%3C/svg%3E");
}

.fa-compress::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 9h5V4M20 9h-5V4M4 15h5v5M20 15h-5v5'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 9h5V4M20 9h-5V4M4 15h5v5M20 15h-5v5'/%3E%3C/svg%3E");
}

.fa-user-circle::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Ccircle cx='12' cy='10' r='3'/%3E%3Cpath d='M6.5 18.5c1-2.6 3-3.9 5.5-3.9s4.5 1.3 5.5 3.9'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Ccircle cx='12' cy='10' r='3'/%3E%3Cpath d='M6.5 18.5c1-2.6 3-3.9 5.5-3.9s4.5 1.3 5.5 3.9'/%3E%3C/svg%3E");
}

.fa-th-large::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2'%3E%3Crect x='3.5' y='3.5' width='7' height='7' rx='1.5'/%3E%3Crect x='13.5' y='3.5' width='7' height='7' rx='1.5'/%3E%3Crect x='3.5' y='13.5' width='7' height='7' rx='1.5'/%3E%3Crect x='13.5' y='13.5' width='7' height='7' rx='1.5'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2'%3E%3Crect x='3.5' y='3.5' width='7' height='7' rx='1.5'/%3E%3Crect x='13.5' y='3.5' width='7' height='7' rx='1.5'/%3E%3Crect x='3.5' y='13.5' width='7' height='7' rx='1.5'/%3E%3Crect x='13.5' y='13.5' width='7' height='7' rx='1.5'/%3E%3C/svg%3E");
}

.fa-search::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='M16.5 16.5L21 21'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='M16.5 16.5L21 21'/%3E%3C/svg%3E");
}

.fa-arrow-right::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12h15M13 6l6 6-6 6'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12h15M13 6l6 6-6 6'/%3E%3C/svg%3E");
}

.fa-user::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='8' r='4'/%3E%3Cpath d='M4.5 20c0-3.6 3.4-5.5 7.5-5.5s7.5 1.9 7.5 5.5'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='8' r='4'/%3E%3Cpath d='M4.5 20c0-3.6 3.4-5.5 7.5-5.5s7.5 1.9 7.5 5.5'/%3E%3C/svg%3E");
}

.fa-lock::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4.5' y='10.5' width='15' height='10' rx='2'/%3E%3Cpath d='M8 10.5V7.5a4 4 0 018 0v3'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4.5' y='10.5' width='15' height='10' rx='2'/%3E%3Cpath d='M8 10.5V7.5a4 4 0 018 0v3'/%3E%3C/svg%3E");
}

.fa-shield-alt::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linejoin='round'%3E%3Cpath d='M12 3l7 3v5.5c0 4.8-2.9 7.8-7 9.5-4.1-1.7-7-4.7-7-9.5V6l7-3z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linejoin='round'%3E%3Cpath d='M12 3l7 3v5.5c0 4.8-2.9 7.8-7 9.5-4.1-1.7-7-4.7-7-9.5V6l7-3z'/%3E%3C/svg%3E");
}

.fa-envelope::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='5' width='18' height='14' rx='2'/%3E%3Cpath d='M3.5 7l8.5 6 8.5-6'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='5' width='18' height='14' rx='2'/%3E%3Cpath d='M3.5 7l8.5 6 8.5-6'/%3E%3C/svg%3E");
}

.fa-envelope-open-text::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 10l9-6 9 6v9a1 1 0 01-1 1H4a1 1 0 01-1-1v-9z'/%3E%3Cpath d='M3.5 10L12 16l8.5-6'/%3E%3Cpath d='M8 12.5v3M12 14.5v3M16 12.5v3'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 10l9-6 9 6v9a1 1 0 01-1 1H4a1 1 0 01-1-1v-9z'/%3E%3Cpath d='M3.5 10L12 16l8.5-6'/%3E%3Cpath d='M8 12.5v3M12 14.5v3M16 12.5v3'/%3E%3C/svg%3E");
}

.fa-times::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 6l12 12M18 6L6 18'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 6l12 12M18 6L6 18'/%3E%3C/svg%3E");
}

.fa-download::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v12M7 10l5 5 5-5M4 20h16'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v12M7 10l5 5 5-5M4 20h16'/%3E%3C/svg%3E");
}

.fa-upload::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 16V4M7 9l5-5 5 5M4 20h16'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 16V4M7 9l5-5 5 5M4 20h16'/%3E%3C/svg%3E");
}

/* 搜索引擎图标：使用自带彩色 SVG */
.engine-tab img.engine-ico {
    width: 15px;
    height: 15px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}
/* 高亮项的蓝色底会把蓝色系 logo 吞掉，选中时转为白色剪影 */
.engine-tab.active img.engine-ico {
    filter: brightness(0) invert(1);
}