:root {
    color-scheme: light;
    --sst-ink: #182126;
    --sst-muted: #5a686c;
    --sst-paper: #ffffff;
    --sst-page: #edf2ef;
    --sst-soft: #f5f8f6;
    --sst-line: #c9d4ce;
    --sst-line-strong: #9eaea6;
    --sst-teal: #0b766d;
    --sst-teal-dark: #075a53;
    --sst-amber: #d9941f;
    --sst-amber-soft: #fff3d7;
    --sst-coral: #bb4b3a;
    --sst-blue: #315f7a;
    --sst-shadow: 0 12px 30px rgba(24, 33, 38, 0.09);
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    min-width: 320px;
    background: var(--sst-page);
}

body {
    margin: 0;
    color: var(--sst-ink);
    background: var(--sst-page);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
    line-height: 1.65;
    letter-spacing: 0;
}

button,
input,
select {
    font: inherit;
    letter-spacing: 0;
}

button,
.sst-drop-zone,
.sst-mobile-tabs button,
.sst-segmented label {
    -webkit-tap-highlight-color: transparent;
}

button {
    min-height: 42px;
    border: 1px solid var(--sst-teal);
    border-radius: 6px;
    padding: 8px 14px;
    color: #ffffff;
    background: var(--sst-teal);
    font-weight: 700;
    cursor: pointer;
}

button:hover:not(:disabled) {
    background: var(--sst-teal-dark);
    border-color: var(--sst-teal-dark);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.sst-drop-zone:focus-visible,
.sst-segmented label:has(input:focus-visible) {
    outline: 3px solid rgba(217, 148, 31, 0.42);
    outline-offset: 2px;
}

button:disabled {
    color: #89938f;
    border-color: #cbd3cf;
    background: #e4e9e6;
    cursor: not-allowed;
}

button.secondary {
    color: var(--sst-ink);
    border-color: var(--sst-line-strong);
    background: #ffffff;
}

button.secondary:hover:not(:disabled) {
    color: var(--sst-teal-dark);
    border-color: var(--sst-teal);
    background: #f3fbf8;
}

button.compact {
    min-height: 34px;
    padding: 5px 9px;
    font-size: 13px;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    overflow: hidden !important;
    clip: rect(0 0 0 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.sst-shell {
    width: min(1240px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 40px;
}

.sst-header {
    padding: 0 2px 22px;
}

.sst-breadcrumb {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    color: var(--sst-teal-dark);
    font-weight: 700;
    text-decoration: none;
}

.sst-breadcrumb:hover {
    text-decoration: underline;
}

.sst-kicker {
    margin: 0;
    color: var(--sst-teal-dark);
    font-size: 12px;
    font-weight: 800;
    line-height: 1.3;
}

.sst-header .sst-kicker {
    margin-top: 12px;
}

.sst-header h1 {
    margin: 5px 0 6px;
    font-size: 40px;
    line-height: 1.22;
    letter-spacing: 0;
}

.sst-lead {
    max-width: 760px;
    margin: 0;
    color: var(--sst-muted);
    font-size: 17px;
}

.sst-tool {
    overflow: hidden;
    border: 1px solid var(--sst-line-strong);
    border-radius: 8px;
    background: var(--sst-paper);
    box-shadow: var(--sst-shadow);
}

.sst-load-band {
    display: grid;
    grid-template-columns: minmax(360px, 1fr) auto 160px;
    gap: 16px;
    align-items: stretch;
    padding: 16px;
    border-bottom: 1px solid var(--sst-line);
    background: var(--sst-soft);
}

.sst-drop-zone {
    display: flex;
    min-height: 92px;
    flex-direction: column;
    justify-content: center;
    border: 2px dashed var(--sst-line-strong);
    border-radius: 7px;
    padding: 12px 16px;
    background: #ffffff;
    cursor: pointer;
}

.sst-drop-zone:hover,
.sst-drop-zone.is-dragging {
    border-color: var(--sst-teal);
    background: #f0faf7;
}

.sst-drop-zone strong {
    color: var(--sst-teal-dark);
    font-size: 16px;
}

.sst-drop-zone span,
.sst-drop-zone small {
    color: var(--sst-muted);
}

.sst-drop-zone small {
    margin-top: 2px;
    font-size: 12px;
}

.sst-load-actions {
    display: grid;
    min-width: 154px;
    grid-template-columns: 1fr;
    gap: 7px;
}

.sst-load-actions button {
    min-height: 0;
}

.sst-upload-state {
    display: flex;
    min-width: 0;
    flex-direction: column;
    justify-content: center;
    border-left: 1px solid var(--sst-line);
    padding-left: 16px;
}

.sst-upload-state span,
.sst-upload-state small {
    color: var(--sst-muted);
    font-size: 12px;
}

.sst-upload-state strong {
    font-size: 22px;
    line-height: 1.25;
}

.sst-mobile-tabs {
    display: none;
}

.sst-workspace {
    display: grid;
    height: clamp(650px, calc(100vh - 160px), 760px);
    min-height: 650px;
    max-height: 760px;
    grid-template-columns: minmax(220px, 0.78fr) minmax(390px, 1.55fr) minmax(258px, 0.86fr);
}

.sst-panel {
    display: flex;
    min-width: 0;
    min-height: 0;
    flex-direction: column;
    background: #ffffff;
}

.sst-panel + .sst-panel {
    border-left: 1px solid var(--sst-line);
}

.sst-panel-heading {
    display: flex;
    min-height: 68px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--sst-line);
    background: #ffffff;
}

.sst-panel-heading h2 {
    margin: 2px 0 0;
    font-size: 18px;
    line-height: 1.35;
}

.sst-preview-toolbar {
    display: flex;
    min-width: 0;
    min-height: 52px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--sst-line);
    background: var(--sst-soft);
}

.sst-preview-mode-control {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 7px;
}

.sst-preview-mode-label {
    flex: 0 0 auto;
    color: var(--sst-muted);
    font-size: 12px;
    font-weight: 700;
}

.sst-preview-modes {
    display: grid;
    min-width: 174px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sst-preview-modes button {
    min-width: 0;
    min-height: 34px;
    border-color: var(--sst-line-strong);
    border-radius: 0;
    padding: 5px 10px;
    color: var(--sst-ink);
    background: #ffffff;
    font-size: 12px;
    white-space: nowrap;
}

.sst-preview-modes button:first-child {
    border-radius: 5px 0 0 5px;
}

.sst-preview-modes button:last-child {
    border-radius: 0 5px 5px 0;
}

.sst-preview-modes button + button {
    border-left: 0;
}

.sst-preview-modes button:hover:not(:disabled) {
    color: var(--sst-teal-dark);
    border-color: var(--sst-teal);
    background: #f3fbf8;
}

.sst-preview-modes button[aria-pressed="true"] {
    color: #ffffff;
    border-color: var(--sst-teal);
    background: var(--sst-teal);
}

.sst-preview-modes button[aria-pressed="true"]:hover {
    color: #ffffff;
    background: var(--sst-teal-dark);
}

#imageCountBadge {
    flex: 0 0 auto;
    border: 1px solid var(--sst-line);
    border-radius: 999px;
    padding: 2px 8px;
    color: var(--sst-muted);
    background: var(--sst-soft);
    font-size: 12px;
    font-weight: 700;
}

.sst-panel-help,
.sst-control-help {
    margin: 0;
    color: var(--sst-muted);
    font-size: 12px;
}

.sst-panel-help {
    padding: 9px 12px;
    border-bottom: 1px solid var(--sst-line);
    background: var(--sst-soft);
}

.sst-image-list {
    display: flex;
    min-height: 0;
    margin: 0;
    padding: 8px;
    flex: 1 1 auto;
    flex-direction: column;
    gap: 7px;
    overflow: auto;
    list-style: none;
}

.sst-image-item {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 9px;
    align-items: center;
    border: 1px solid var(--sst-line);
    border-radius: 6px;
    padding: 7px;
    background: #ffffff;
}

.sst-image-item.is-processing {
    opacity: 0.62;
}

.sst-image-thumb {
    display: block;
    width: 52px;
    height: 70px;
    border: 1px solid var(--sst-line);
    border-radius: 3px;
    object-fit: cover;
    background: #eef2f0;
}

.sst-image-info {
    min-width: 0;
}

.sst-image-order {
    display: flex;
    align-items: center;
    gap: 6px;
}

.sst-image-order strong {
    color: var(--sst-teal-dark);
    font-size: 12px;
}

.sst-image-name {
    display: block;
    overflow: hidden;
    font-size: 13px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sst-image-meta {
    display: block;
    color: var(--sst-muted);
    font-size: 11px;
}

.sst-image-actions {
    display: grid;
    margin-top: 6px;
    grid-template-columns: repeat(3, 34px);
    gap: 5px;
}

.sst-image-actions button {
    display: inline-grid;
    width: 34px;
    min-height: 32px;
    place-items: center;
    padding: 0;
    color: var(--sst-ink);
    border-color: var(--sst-line);
    background: var(--sst-soft);
    font-size: 16px;
}

.sst-image-actions button:hover:not(:disabled) {
    color: var(--sst-teal-dark);
    border-color: var(--sst-teal);
    background: #f0faf7;
}

.sst-image-actions .remove-image:hover:not(:disabled) {
    color: var(--sst-coral);
    border-color: var(--sst-coral);
    background: #fff6f4;
}

.sst-empty {
    margin: auto 14px;
    color: var(--sst-muted);
    font-size: 13px;
    text-align: center;
}

.sst-switch {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 6px;
    color: var(--sst-muted);
    font-size: 12px;
    font-weight: 700;
}

.sst-switch input {
    width: 18px;
    height: 18px;
    accent-color: var(--sst-teal);
}

.sst-preview-stage {
    position: relative;
    min-height: 0;
    flex: 1 1 0;
    overflow: auto;
    background: #dde5e1;
    scrollbar-gutter: stable;
}

#previewCanvas {
    display: none;
    border: 1px solid rgba(24, 33, 38, 0.28);
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(24, 33, 38, 0.14);
}

#previewCanvas.is-visible {
    display: block;
}

.sst-preview-stage[data-preview-mode="fit"] {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    overflow: auto;
}

.sst-preview-stage[data-preview-mode="fit"] #previewCanvas.is-visible {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 100%;
    margin: 0;
}

.sst-preview-stage[data-preview-mode="width"] #previewCanvas.is-visible {
    width: calc(100% - 28px);
    max-width: none;
    height: auto;
    max-height: none;
    margin: 14px auto;
}

.sst-preview-stage[data-preview-mode="actual"] #previewCanvas.is-visible {
    width: var(--sst-preview-output-width, auto);
    max-width: none;
    height: var(--sst-preview-output-height, auto);
    max-height: none;
    margin: 14px;
}

.sst-preview-empty {
    position: absolute;
    inset: 0;
    display: grid;
    margin: 0;
    place-items: center;
    padding: 30px;
    color: var(--sst-muted);
    text-align: center;
}

.sst-output-metrics {
    display: grid;
    min-height: 64px;
    margin: 0;
    flex: 0 0 auto;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--sst-line);
    background: #ffffff;
}

.sst-output-metrics div {
    min-width: 0;
    padding: 9px 10px;
}

.sst-output-metrics div + div {
    border-left: 1px solid var(--sst-line);
}

.sst-output-metrics dt {
    color: var(--sst-muted);
    font-size: 10px;
}

.sst-output-metrics dd {
    margin: 1px 0 0;
    overflow-wrap: anywhere;
    font-size: 13px;
    font-weight: 800;
}

.sst-controls-panel {
    overflow: hidden;
}

.sst-controls-panel > .sst-control-block:first-of-type {
    min-height: 0;
    flex: 1 1 auto;
    overflow: auto;
}

.sst-controls-panel > .sst-control-block:nth-of-type(2) {
    flex: 0 0 auto;
}

.sst-control-block {
    padding: 14px;
    border-bottom: 1px solid var(--sst-line);
}

.sst-control-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.sst-control-help {
    margin-top: 7px;
}

.sst-seam-list {
    display: flex;
    margin-top: 11px;
    flex-direction: column;
    gap: 10px;
}

.sst-seam-item {
    border-left: 3px solid var(--sst-amber);
    padding: 8px 0 8px 10px;
}

.sst-seam-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.sst-seam-heading strong {
    font-size: 13px;
}

.sst-confidence {
    flex: 0 0 auto;
    border-radius: 999px;
    padding: 2px 7px;
    font-size: 10px;
    font-weight: 800;
}

.sst-confidence.high {
    color: #075a38;
    background: #dcf4e7;
}

.sst-confidence.medium {
    color: #71500e;
    background: var(--sst-amber-soft);
}

.sst-confidence.low {
    color: #8a3427;
    background: #fde4df;
}

.sst-seam-value {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 5px;
    color: var(--sst-muted);
    font-size: 11px;
}

.sst-seam-value input {
    width: 82px;
    min-height: 34px;
    border: 1px solid var(--sst-line-strong);
    border-radius: 5px;
    padding: 4px 7px;
    color: var(--sst-ink);
    background: #ffffff;
    text-align: right;
}

.sst-seam-item input[type="range"],
.sst-range-row input[type="range"] {
    display: block;
    width: 100%;
    margin: 4px 0 0;
    accent-color: var(--sst-teal);
}

.sst-seam-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 4px;
}

.sst-control-label {
    display: block;
    margin-bottom: 8px;
}

.sst-segmented {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border: 1px solid var(--sst-line-strong);
    border-radius: 6px;
    overflow: hidden;
}

.sst-segmented label {
    position: relative;
    min-width: 0;
    cursor: pointer;
}

.sst-segmented label + label {
    border-left: 1px solid var(--sst-line-strong);
}

.sst-segmented input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.sst-segmented span {
    display: grid;
    min-height: 40px;
    place-items: center;
    color: var(--sst-ink);
    background: #ffffff;
    font-size: 13px;
    font-weight: 800;
}

.sst-segmented input:checked + span {
    color: #ffffff;
    background: var(--sst-teal);
}

.sst-range-row {
    display: block;
    margin-top: 12px;
    color: var(--sst-muted);
    font-size: 12px;
}

.sst-range-row span {
    display: flex;
    justify-content: space-between;
}

.sst-save-block {
    flex: 0 0 auto;
    padding: 14px;
    border-top: 1px solid var(--sst-line);
    background: var(--sst-soft);
}

.sst-save-block button {
    width: 100%;
}

.sst-save-block p {
    margin: 7px 0 0;
    color: var(--sst-muted);
    font-size: 11px;
}

.sst-status {
    min-height: 52px;
    padding: 13px 16px;
    border-top: 1px solid var(--sst-line);
    color: var(--sst-ink);
    background: #f8faf9;
    font-weight: 700;
    text-wrap: pretty;
}

.sst-status.is-busy {
    color: var(--sst-blue);
}

.sst-status.is-warning {
    color: #8a4d0a;
    background: #fff8e9;
}

.sst-status.is-error {
    color: #8f2e22;
    background: #fff2f0;
}

.sst-ad-reserve {
    display: grid;
    min-height: 112px;
    margin: 26px 0;
    place-items: center;
    border-block: 1px solid var(--sst-line);
    color: #84908b;
    background: rgba(255, 255, 255, 0.55);
    font-size: 11px;
    font-weight: 800;
}

.sst-info-band {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-block: 1px solid var(--sst-line-strong);
    background: #ffffff;
}

.sst-info-band > div {
    min-width: 0;
    padding: 22px;
}

.sst-info-band > div + div {
    border-left: 1px solid var(--sst-line);
}

.sst-info-band h2,
.sst-privacy-note h2,
.sst-comments-placeholder h2 {
    margin: 3px 0 8px;
    font-size: 19px;
    line-height: 1.4;
}

.sst-info-band p,
.sst-info-band ol,
.sst-privacy-note p,
.sst-comments-placeholder p {
    margin: 0;
    color: var(--sst-muted);
    font-size: 14px;
}

.sst-info-band ol {
    padding-left: 1.4em;
}

.sst-info-band li + li {
    margin-top: 4px;
}

.sst-privacy-note,
.sst-comments-placeholder {
    padding: 22px;
    border-bottom: 1px solid var(--sst-line);
    background: #ffffff;
}

.sst-comments-placeholder {
    background: #f7f9f8;
}

.sst-return-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    padding: 20px 2px;
}

.sst-return-links a,
.sst-footer a {
    color: var(--sst-teal-dark);
    font-weight: 700;
}

.sst-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 2px 4px;
    border-top: 1px solid var(--sst-line-strong);
    color: var(--sst-muted);
    font-size: 13px;
}

@media (max-width: 1100px) and (min-width: 901px) {
    .sst-load-band {
        grid-template-columns: minmax(300px, 1fr) 146px 140px;
        gap: 12px;
    }

    .sst-workspace {
        grid-template-columns: 210px minmax(350px, 1fr) 250px;
    }

    .sst-panel-heading {
        padding-inline: 11px;
    }

    .sst-control-block,
    .sst-save-block {
        padding-inline: 11px;
    }
}

@media (max-width: 900px) {
    .sst-shell {
        width: min(100% - 24px, 760px);
        padding-top: 18px;
    }

    .sst-header {
        padding-bottom: 16px;
    }

    .sst-header h1 {
        font-size: 34px;
    }

    .sst-load-band {
        grid-template-columns: 1fr 178px;
    }

    .sst-upload-state {
        grid-column: 1 / -1;
        min-height: 58px;
        border-top: 1px solid var(--sst-line);
        border-left: 0;
        padding: 10px 0 0;
    }

    .sst-mobile-tabs {
        display: grid;
        position: sticky;
        z-index: 4;
        top: 0;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        border-bottom: 1px solid var(--sst-line-strong);
        background: #ffffff;
    }

    .sst-mobile-tabs button {
        min-width: 0;
        min-height: 46px;
        border: 0;
        border-radius: 0;
        padding: 8px 5px;
        color: var(--sst-muted);
        background: #ffffff;
        font-size: 13px;
    }

    .sst-mobile-tabs button + button {
        border-left: 1px solid var(--sst-line);
    }

    .sst-mobile-tabs button[aria-selected="true"] {
        color: var(--sst-teal-dark);
        box-shadow: inset 0 -3px var(--sst-teal);
    }

    .sst-workspace {
        display: block;
        height: auto;
        min-height: 560px;
        max-height: none;
    }

    .sst-panel {
        min-height: 560px;
        border-left: 0 !important;
    }

    .sst-preview-panel {
        height: 650px;
    }

    body[data-mobile-panel="images"] .sst-panel:not(.sst-images-panel),
    body[data-mobile-panel="preview"] .sst-panel:not(.sst-preview-panel),
    body[data-mobile-panel="controls"] .sst-panel:not(.sst-controls-panel) {
        display: none;
    }

    .sst-image-list,
    .sst-controls-panel {
        max-height: 650px;
    }

    .sst-preview-stage {
        min-height: 470px;
    }

    .sst-info-band {
        grid-template-columns: 1fr;
    }

    .sst-info-band > div + div {
        border-top: 1px solid var(--sst-line);
        border-left: 0;
    }
}

@media (max-width: 640px) {
    .sst-shell {
        width: calc(100% - 16px);
        padding-top: 10px;
    }

    .sst-breadcrumb {
        min-height: 36px;
        font-size: 13px;
    }

    .sst-header .sst-kicker {
        margin-top: 8px;
    }

    .sst-header h1 {
        margin-top: 4px;
        font-size: 28px;
        line-height: 1.3;
    }

    .sst-lead {
        font-size: 14px;
    }

    .sst-load-band {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 10px;
    }

    .sst-drop-zone {
        min-height: 112px;
        padding: 12px;
    }

    .sst-drop-zone strong {
        font-size: 15px;
    }

    .sst-load-actions {
        min-width: 0;
        grid-template-columns: 1fr 1fr;
    }

    .sst-load-actions #chooseButton {
        grid-column: 1 / -1;
    }

    .sst-upload-state {
        grid-column: auto;
    }

    .sst-mobile-tabs button {
        font-size: 12px;
    }

    .sst-preview-toolbar {
        align-items: stretch;
        flex-direction: column;
        gap: 7px;
    }

    .sst-preview-mode-control {
        width: 100%;
    }

    .sst-preview-modes {
        min-width: 0;
        flex: 1 1 auto;
    }

    .sst-preview-toolbar .sst-switch {
        align-self: flex-end;
    }

    .sst-panel,
    .sst-workspace {
        min-height: 520px;
    }

    .sst-preview-stage {
        min-height: 430px;
    }

    .sst-preview-panel {
        height: 720px;
    }

    .sst-output-metrics {
        grid-template-columns: 1fr;
    }

    .sst-output-metrics div {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        gap: 10px;
        padding: 7px 10px;
    }

    .sst-output-metrics div + div {
        border-top: 1px solid var(--sst-line);
        border-left: 0;
    }

    .sst-output-metrics dd {
        text-align: right;
    }

    .sst-info-band > div,
    .sst-privacy-note,
    .sst-comments-placeholder {
        padding: 18px 16px;
    }

    .sst-return-links {
        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
        padding-inline: 4px;
    }

    .sst-footer {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
        padding-inline: 4px;
    }
}

@media (max-width: 375px) {
    .sst-header h1 {
        font-size: 26px;
    }
}

@media (max-width: 340px) {
    .sst-title-part {
        display: block;
    }

    .sst-load-actions {
        grid-template-columns: 1fr;
    }

    .sst-load-actions #chooseButton {
        grid-column: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}