/* ======================================================================
 *  image-upscaler.css · 图片无损放大
 *  视觉：冷白实验室 + 靛蓝刻度；像素格与标尺元素，强调「尺寸与精度」
 *  作用域：.tsk.ius（前缀 ius-）
 * ====================================================================== */

.tsk.ius {
    --tsk-bg: #f3f6fa;
    --tsk-bg-2: #e8edf5;
    --tsk-card: #ffffff;
    --tsk-card-2: #f5f8fc;
    --tsk-ink: #141b2b;
    --tsk-sub: #52617a;
    --tsk-faint: #8896ab;
    --tsk-line: #e2e8f2;
    --tsk-line-2: #edf2f8;
    --tsk-brand: #4a5fd6;
    --tsk-brand-2: #3547b0;
    --tsk-brand-soft: #e9ecfc;
    --tsk-brand-ink: #3447bf;
    --tsk-accent: #12a4a4;
    --tsk-ok: #1c8a5e;
    --tsk-ok-soft: #e4f4ec;
    --tsk-warn: #a96c10;
    --tsk-warn-soft: #fbf1de;
    --tsk-bad: #bd4038;
    --tsk-bad-soft: #fae8e6;
    --tsk-shadow-sm: 0 1px 2px rgba(20, 27, 43, .05), 0 7px 18px rgba(20, 27, 43, .05);
    --tsk-shadow: 0 2px 8px rgba(20, 27, 43, .08), 0 22px 46px rgba(20, 27, 43, .1);
    background:
        radial-gradient(620px 300px at 100% -10%, rgba(74, 95, 214, .10), transparent 62%),
        linear-gradient(180deg, #f6f9fd 0%, #eff3f9 100%);
}

:root[data-theme="dark"] .tsk.ius {
    --tsk-bg: #0e1120;
    --tsk-bg-2: #141a2c;
    --tsk-card: #171d30;
    --tsk-card-2: #1d2438;
    --tsk-ink: #e8edfb;
    --tsk-sub: #a3afc7;
    --tsk-faint: #7684a0;
    --tsk-line: #27304a;
    --tsk-line-2: #1f2639;
    --tsk-brand: #7b8cf0;
    --tsk-brand-2: #a3b0ff;
    --tsk-brand-soft: rgba(123, 140, 240, .14);
    --tsk-brand-ink: #a5b2ff;
    --tsk-accent: #4fd1d1;
    --tsk-ok: #55d3a0;
    --tsk-ok-soft: rgba(85, 211, 160, .13);
    --tsk-warn: #ecc26a;
    --tsk-warn-soft: rgba(236, 194, 106, .13);
    --tsk-bad: #f0948b;
    --tsk-bad-soft: rgba(240, 148, 139, .13);
    --tsk-shadow-sm: 0 1px 2px rgba(0, 0, 0, .5), 0 7px 18px rgba(0, 0, 0, .3);
    --tsk-shadow: 0 2px 8px rgba(0, 0, 0, .55), 0 22px 46px rgba(0, 0, 0, .42);
    background: #0e1120;
}

/* ---------- 1. 首屏等高栅格 ---------- */
.ius-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 394px;
    gap: 30px;
    padding: 30px 0 24px;
    align-items: stretch;
}
.ius-hero-l {
    display: flex;
    flex-direction: column;
}
.ius-hero-l > .tsk-hs {
    flex: 1 1 auto;
}
@media (max-width: 900px) {
    .ius-hero {
        grid-template-columns: 1fr;
    }
}
.ius-hero-r {
    min-width: 0;
}

/* ---------- 2. 首屏文字 ---------- */
.ius .tsk-kicker {
    background: var(--tsk-brand-soft);
    color: var(--tsk-brand-ink);
}
.ius .tsk-h1 b {
    color: var(--tsk-brand-ink);
}
.ius .tsk-lead b {
    color: var(--tsk-brand-ink);
}
.ius .tsk-chips span {
    background: #fff;
    border-color: #dfe6f4;
}

/* 预期提示 */
.ius-warn {
    display: flex;
    gap: 10px;
    margin-top: 14px;
    padding: 11px 13px;
    border: 1px solid var(--tsk-line);
    border-left: 3px solid var(--tsk-accent);
    border-radius: 6px;
    background: var(--tsk-card);
    font-size: 12px;
    line-height: 1.7;
}
.ius-warn b {
    flex: 0 0 68px;
    color: var(--tsk-accent);
}
.ius-warn span {
    color: var(--tsk-sub);
}

/* ---------- 3. 放大工作台 ---------- */
.ius-panel {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-radius: 14px;
    box-shadow: var(--tsk-shadow);
    overflow: hidden;
}
.ius-panel-hd {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 17px;
    background: linear-gradient(120deg, #3547b0, #4a5fd6);
    color: #fff;
}
.ius-panel-hd b {
    font-size: 13.5px;
}
.ius-panel-hd i {
    font: 700 9.5px/1 var(--tsk-num);
    letter-spacing: .14em;
    opacity: .85;
}
.ius-panel-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 15px 17px 17px;
    flex: 1 1 auto;
}

/* 拖拽区：像素网格 */
.ius-drop {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 22px 14px 20px;
    border: 1px dashed #b9c3e0;
    border-radius: 8px;
    background:
        linear-gradient(rgba(74, 95, 214, .07) 1px, transparent 1px) 0 0 / 12px 12px,
        linear-gradient(90deg, rgba(74, 95, 214, .07) 1px, transparent 1px) 0 0 / 12px 12px,
        var(--tsk-card-2);
    cursor: pointer;
    text-align: center;
    transition: border-color .16s, background .16s;
}
.ius-drop:hover,
.ius-drop.over {
    border-color: var(--tsk-brand);
    background-color: #eef1fd;
}
.ius-drop-ic {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: linear-gradient(145deg, #4a5fd6, #3547b0);
    color: #fff;
    font-size: 22px;
    box-shadow: 0 10px 20px rgba(53, 71, 176, .28);
}
.ius-drop b {
    font-size: 13.5px;
}
.ius-drop small {
    font-size: 10.5px;
    color: var(--tsk-faint);
    line-height: 1.55;
}

/* 队列信息 */
.ius-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}
.ius-meta div {
    padding: 7px 9px;
    border: 1px solid var(--tsk-line);
    border-radius: 6px;
    background: var(--tsk-card-2);
    text-align: center;
}
.ius-meta span {
    display: block;
    font-size: 10px;
    color: var(--tsk-faint);
}
.ius-meta b {
    display: block;
    margin-top: 2px;
    font: 800 13px/1.4 var(--tsk-num);
    color: var(--tsk-ink);
}

/* 倍数选择 */
.ius-field > label,
.ius-lab {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 11.5px;
    font-weight: 800;
    color: var(--tsk-sub);
}
.ius-field label b {
    font: 800 13px/1 var(--tsk-num);
    color: var(--tsk-brand-ink);
}
.ius-scale {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}
.ius-scale button {
    display: flex;
    flex-direction: column;
    gap: 1px;
    padding: 8px 10px;
    border: 1.5px solid var(--tsk-line);
    border-radius: 8px;
    background: var(--tsk-card-2);
    color: var(--tsk-sub);
    cursor: pointer;
    text-align: left;
    transition: .15s;
}
.ius-scale button b {
    font: 800 16px/1.2 var(--tsk-num);
    color: var(--tsk-ink);
}
.ius-scale button small {
    font-size: 10.5px;
    color: var(--tsk-faint);
}
.ius-scale button:hover {
    border-color: var(--tsk-brand);
}
.ius-scale button.on {
    border-color: var(--tsk-brand);
    background: var(--tsk-brand-soft);
}
.ius-scale button.on b {
    color: var(--tsk-brand-ink);
}
.ius-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 99px;
    background: linear-gradient(90deg, #c3cbf5, var(--tsk-brand));
    outline: none;
}
.ius-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 17px;
    height: 17px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--tsk-brand);
    cursor: pointer;
}
.ius-range::-moz-range-thumb {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--tsk-brand);
    cursor: pointer;
}
.ius-marks {
    display: flex;
    justify-content: space-between;
    margin-top: 3px;
    font-size: 10.5px;
    color: var(--tsk-faint);
}

/* 进度 */
.ius-prog {
    display: grid;
    gap: 4px;
}
.ius-prog-bar {
    height: 6px;
    border-radius: 99px;
    background: var(--tsk-line-2);
    overflow: hidden;
}
.ius-prog-bar i {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #3547b0, #7b8cf0);
    transition: width .2s linear;
}
.ius-prog-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}
.ius-prog-row span {
    font: 600 10.5px/1.5 var(--tsk-num);
    color: var(--tsk-faint);
}
.ius-prog-row b {
    font: 800 11px/1.5 var(--tsk-num);
    color: var(--tsk-brand-ink);
}
.ius-err {
    padding: 8px 11px;
    border: 1px solid rgba(189, 64, 56, .26);
    border-radius: 6px;
    background: var(--tsk-bad-soft);
    color: var(--tsk-bad);
    font-size: 11.5px;
    line-height: 1.65;
}
.ius-acts {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
}
.ius-acts .tsk-btn-main {
    flex: 1 1 100%;
}
.ius-ghost {
    flex: 1 1 0;
    padding: 7px 8px;
    font-size: 11.5px;
}
.ius-foot {
    font-size: 10.5px;
    line-height: 1.6;
    color: var(--tsk-faint);
    text-align: center;
}

/* ---------- 4. 结果区 ---------- */
.ius-result {
    margin: 4px 0 24px;
    padding: 17px 19px 19px;
    border: 1px solid var(--tsk-line);
    border-radius: 14px;
    background: var(--tsk-card);
    box-shadow: var(--tsk-shadow-sm);
}
.ius-result-hd {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--tsk-line);
}
.ius-stat {
    min-width: 82px;
}
.ius-stat b {
    display: block;
    font: 800 18px/1.3 var(--tsk-num);
    color: var(--tsk-ink);
}
.ius-stat span {
    font-size: 10.5px;
    color: var(--tsk-faint);
}
.ius-result-acts {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-left: auto;
}
.ius-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(258px, 1fr));
    gap: 12px;
    margin-top: 14px;
}
.ius-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--tsk-line);
    border-radius: 10px;
    background: var(--tsk-card-2);
    overflow: hidden;
    animation: ius-in .26s ease both;
}
@keyframes ius-in {
    from { opacity: 0; transform: translateY(7px); }
    to { opacity: 1; transform: none; }
}
.ius-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    background:
        linear-gradient(45deg, #e6ebf5 25%, transparent 25%) 0 0 / 14px 14px,
        linear-gradient(-45deg, #e6ebf5 25%, transparent 25%) 0 7px / 14px 14px,
        #eff3f9;
}
.ius-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}
.ius-thumb-badge {
    position: absolute;
    left: 8px;
    top: 8px;
    padding: 2px 7px;
    border-radius: 3px;
    background: rgba(52, 71, 191, .9);
    color: #fff;
    font: 700 10px/1.5 var(--tsk-num);
}
.ius-card-body {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px 12px 12px;
}
.ius-card-name {
    font-size: 12px;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ius-dim {
    font: 600 10.5px/1.4 var(--tsk-num);
    color: var(--tsk-faint);
}
.ius-dim-row {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--tsk-sub);
}
.ius-dim-row b {
    font: 700 11px/1 var(--tsk-num);
    color: var(--tsk-brand-ink);
}
.ius-card-foot {
    display: flex;
    gap: 6px;
    margin-top: 2px;
}
.ius-card-foot .tsk-btn {
    flex: 1 1 auto;
    padding: 6px 0;
    font-size: 11.5px;
}
.ius-fail {
    padding: 10px 12px;
    border: 1px dashed rgba(189, 64, 56, .4);
    border-radius: 8px;
    background: var(--tsk-bad-soft);
    color: var(--tsk-bad);
    font-size: 11px;
    line-height: 1.6;
}

/* ---------- 5. 四步说明 ---------- */
.ius-sec-sub {
    margin-left: auto;
    font-size: 12px;
    color: var(--tsk-faint);
}
.ius-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 10px;
}
.ius-step {
    position: relative;
    padding: 16px 17px;
    border: 1px solid var(--tsk-line);
    border-radius: 10px;
    background: var(--tsk-card);
    box-shadow: var(--tsk-shadow-sm);
}
.ius-step > span {
    display: block;
    font: 800 22px/1 var(--tsk-num);
    color: var(--tsk-brand-ink);
    opacity: .28;
    margin-bottom: 6px;
}
.ius-step b {
    display: block;
    font-size: 13px;
}
.ius-step p {
    margin-top: 4px;
    font-size: 12px;
    line-height: 1.72;
    color: var(--tsk-sub);
}

/* ---------- 6. 参数对照 ---------- */
.ius-compare {
    display: grid;
    gap: 1px;
    border: 1px solid var(--tsk-line);
    border-radius: 9px;
    background: var(--tsk-line);
    overflow: hidden;
}
.ius-compare-row {
    display: grid;
    grid-template-columns: 150px 170px minmax(0, 1fr);
    gap: 12px;
    padding: 11px 15px;
    background: var(--tsk-card);
    font-size: 12px;
    line-height: 1.7;
}
.ius-compare-a {
    font-weight: 800;
    color: var(--tsk-ink);
}
.ius-compare-b {
    color: var(--tsk-brand-ink);
}
.ius-compare-c {
    color: var(--tsk-sub);
}

/* ---------- 7. 建议与场景 ---------- */
.ius-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(276px, 1fr));
    gap: 9px;
}
.ius-tip {
    display: flex;
    gap: 10px;
    padding: 13px 14px;
    border: 1px solid var(--tsk-line);
    border-radius: 8px;
    background: var(--tsk-card);
}
.ius-tip > span {
    font: 800 15px/1 var(--tsk-num);
    color: var(--tsk-brand-ink);
    opacity: .5;
    padding-top: 2px;
}
.ius-tip b {
    display: block;
    font-size: 12.5px;
}
.ius-tip p {
    margin-top: 3px;
    font-size: 12px;
    line-height: 1.7;
    color: var(--tsk-sub);
}
.ius-scenes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 9px;
}
.ius-scene {
    padding: 14px 15px;
    border: 1px solid var(--tsk-line);
    border-left: 3px solid var(--tsk-accent);
    border-radius: 8px;
    background: var(--tsk-card);
}
.ius-scene b {
    font-size: 12.5px;
}
.ius-scene p {
    margin-top: 3px;
    font-size: 12px;
    line-height: 1.7;
    color: var(--tsk-sub);
}

/* ---------- 8. 响应式 ---------- */
@media (max-width: 900px) {
    .ius-hero {
        gap: 20px;
    }
    .ius-panel {
        height: auto;
    }
    .ius-compare-row {
        grid-template-columns: 120px 130px minmax(0, 1fr);
        gap: 9px;
    }
}
@media (max-width: 640px) {
    .ius-compare-row {
        grid-template-columns: 1fr;
        gap: 2px;
    }
    .ius-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
    .ius-steps,
    .ius-tips,
    .ius-scenes {
        grid-template-columns: 1fr;
    }
    .ius-result-acts {
        margin-left: 0;
        width: 100%;
    }
}

/* ---------- 9. 深色微调 ---------- */
:root[data-theme="dark"] .ius-drop {
    background:
        linear-gradient(rgba(123, 140, 240, .07) 1px, transparent 1px) 0 0 / 12px 12px,
        linear-gradient(90deg, rgba(123, 140, 240, .07) 1px, transparent 1px) 0 0 / 12px 12px,
        #1b2235;
    border-color: #39456a;
}
:root[data-theme="dark"] .ius-drop:hover,
:root[data-theme="dark"] .ius-drop.over {
    background-color: #202944;
}
:root[data-theme="dark"] .ius-scale button.on {
    background: var(--tsk-brand-soft);
}
:root[data-theme="dark"] .ius-thumb {
    background:
        linear-gradient(45deg, #1b2337 25%, transparent 25%) 0 0 / 14px 14px,
        linear-gradient(-45deg, #1b2337 25%, transparent 25%) 0 7px / 14px 14px,
        #131a2c;
}

/* ---------- 10. 打印与动效 ---------- */
@media print {
    .ius-panel,
    .ius-result-acts,
    .ius-card-foot {
        display: none;
    }
    .ius-card {
        break-inside: avoid;
    }
}
@media (prefers-reduced-motion: reduce) {
    .ius-card {
        animation: none;
    }
    .ius-prog-bar i {
        transition: none;
    }
}