body.image-flip {
    color-scheme: light;
    --paper: #f2f5fb;
    --paper-2: #e6eef8;
    --paper-3: #dbe6f3;
    --ink: #13263f;
    --ink-soft: #2b4566;
    --muted: #61718a;
    --accent: #16a5b8;
    --accent-2: #f4a045;
    --accent-3: #ff6f5c;
    --stroke: rgba(19, 38, 63, 0.15);
    --stroke-strong: rgba(19, 38, 63, 0.32);
    --shadow: 0 26px 60px rgba(19, 38, 63, 0.18);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    min-height: 100vh;
    color: var(--ink);
    background:
        radial-gradient(900px circle at 10% -10%, rgba(22, 165, 184, 0.22), transparent 60%),
        radial-gradient(900px circle at 92% 0%, rgba(244, 160, 69, 0.24), transparent 60%),
        linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 55%, var(--paper-3) 100%);
    position: relative;
    overflow-x: hidden;
}

body.image-flip,
body.image-flip * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.image-flip::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(90deg, rgba(19, 38, 63, 0.04) 1px, transparent 1px),
        linear-gradient(180deg, rgba(19, 38, 63, 0.04) 1px, transparent 1px);
    background-size: 64px 64px;
    pointer-events: none;
    z-index: 0;
}

body.image-flip::after {
    content: "";
    position: fixed;
    top: -180px;
    right: -140px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(255, 111, 92, 0.22), transparent 70%);
    opacity: 0.7;
    pointer-events: none;
    z-index: 0;
}

.image-flip a {
    color: inherit;
    text-decoration: none;
}

.image-flip input,
.image-flip button,
.image-flip select {
    font-family: inherit;
}

.image-flip .page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px 96px;
    position: relative;
    z-index: 1;
}

.image-flip .hero {
    display: grid;
    gap: 32px;
}

.image-flip .hero-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.image-flip .back-link {
    font-weight: 600;
    color: var(--ink-soft);
}

.image-flip .hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.image-flip .badge {
    border-radius: 999px;
    padding: 6px 14px;
    background: rgba(19, 38, 63, 0.08);
    color: var(--ink-soft);
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.image-flip .badge-ink {
    background: var(--ink);
    color: #f8fafc;
}

.image-flip .badge-outline {
    border: 1px solid var(--stroke);
    background: transparent;
}

.image-flip .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 32px;
    align-items: start;
}

.image-flip .hero-main {
    display: grid;
    gap: 18px;
}

.image-flip .hero-eyebrow {
    font-size: 12px;
    letter-spacing: 0.45em;
    text-transform: uppercase;
    color: var(--muted);
}

.image-flip .hero-main h1 {
    font-size: clamp(2.2rem, 2vw + 1.8rem, 3.4rem);
    line-height: 1.12;
}

.image-flip .hero-main p {
    color: var(--ink-soft);
    font-size: 1.05rem;
    line-height: 1.7;
}

.image-flip .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.image-flip .hero-cta {
    padding: 12px 24px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), #1bcad6);
    color: #f8fafc;
    font-weight: 600;
    box-shadow: var(--shadow);
}

.image-flip .hero-cta-hint {
    color: var(--muted);
    font-size: 0.9rem;
}

.image-flip .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.image-flip .tag {
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(22, 165, 184, 0.12);
    color: var(--ink-soft);
    font-size: 0.85rem;
}

.image-flip .hero-side {
    display: grid;
    gap: 16px;
}

.image-flip .hero-card {
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--stroke);
    padding: 20px 22px;
    box-shadow: var(--shadow);
}

.image-flip .hero-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.image-flip .stat-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.image-flip .stat {
    background: rgba(19, 38, 63, 0.06);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}

.image-flip .stat-value {
    display: block;
    font-size: 1.15rem;
    font-weight: 600;
}

.image-flip .stat-label {
    font-size: 0.8rem;
    color: var(--muted);
}

.image-flip .step-list {
    padding-left: 20px;
    display: grid;
    gap: 8px;
    color: var(--ink-soft);
}

.image-flip .hero-note {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 8px;
}

.image-flip .feature-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 32px;
}

.image-flip .feature-card {
    border-radius: var(--radius-lg);
    border: 1px solid var(--stroke);
    padding: 18px 20px;
    background: rgba(255, 255, 255, 0.75);
}

.image-flip .feature-card.accent {
    background: linear-gradient(135deg, rgba(22, 165, 184, 0.16), rgba(255, 255, 255, 0.85));
}

.image-flip .feature-card h3 {
    font-size: 1.05rem;
    margin-bottom: 10px;
}

.image-flip .feature-list {
    display: grid;
    gap: 6px;
    color: var(--ink-soft);
    font-size: 0.92rem;
}

.image-flip .feature-card p {
    color: var(--ink-soft);
    font-size: 0.95rem;
    line-height: 1.6;
}

.image-flip .feature-section {
    margin-top: 28px;
    display: grid;
    gap: 14px;
}

.image-flip .feature-section h2 {
    font-size: clamp(1.5rem, 1.2vw + 1.2rem, 2.1rem);
    color: var(--ink);
}

.image-flip .section-desc {
    color: var(--muted);
    line-height: 1.7;
    max-width: 920px;
}

.image-flip .feature-section .feature-strip {
    margin-top: 0;
}

.image-flip .workspace {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 36px;
}

.image-flip .panel {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-lg);
    border: 1px solid var(--stroke);
    padding: 24px;
    display: grid;
    gap: 18px;
    box-shadow: var(--shadow);
}

.image-flip .panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.image-flip .panel-kicker {
    font-size: 0.75rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--muted);
}

.image-flip .panel-chip {
    border-radius: 999px;
    border: 1px solid var(--stroke);
    padding: 6px 12px;
    font-size: 0.75rem;
    color: var(--muted);
}

.image-flip .dropzone {
    border-radius: var(--radius-lg);
    border: 2px dashed var(--stroke-strong);
    padding: 26px;
    background: rgba(22, 165, 184, 0.08);
    position: relative;
    transition: all 0.2s ease;
}

.image-flip .dropzone input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.image-flip .dropzone.dragover {
    border-color: var(--accent);
    background: rgba(22, 165, 184, 0.16);
    box-shadow: 0 0 0 4px rgba(22, 165, 184, 0.16);
}

.image-flip .dropzone-inner {
    display: grid;
    gap: 10px;
    text-align: center;
    color: var(--ink-soft);
}

.image-flip .dropzone-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--muted);
}

.image-flip .dropzone-tags span {
    border-radius: 999px;
    padding: 4px 10px;
    border: 1px solid var(--stroke);
}

.image-flip .file-meta {
    font-size: 0.9rem;
    color: var(--muted);
}

.image-flip .preview-card {
    display: grid;
    gap: 12px;
}

.image-flip .preview-title {
    font-weight: 600;
    color: var(--ink-soft);
}

.image-flip .preview-frame {
    border-radius: var(--radius-md);
    border: 1px solid var(--stroke);
    background:
        linear-gradient(45deg, rgba(19, 38, 63, 0.04) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(19, 38, 63, 0.04) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(19, 38, 63, 0.04) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(19, 38, 63, 0.04) 75%),
        #f8fafc;
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0px;
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.image-flip .preview-frame img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.image-flip .placeholder {
    color: var(--muted);
    font-size: 0.9rem;
}

.image-flip .control {
    display: grid;
    gap: 10px;
}

.image-flip .control label {
    font-weight: 600;
    color: var(--ink-soft);
}

.image-flip .toggle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.image-flip .toggle-btn {
    border-radius: 14px;
    border: 1px solid var(--stroke);
    padding: 12px 14px;
    background: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--ink-soft);
    cursor: pointer;
    transition: all 0.2s ease;
}

.image-flip .toggle-btn .toggle-icon {
    font-size: 1.1rem;
    color: var(--accent);
}

.image-flip .toggle-btn.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(22, 165, 184, 0.18);
    background: rgba(22, 165, 184, 0.1);
}

.image-flip .format-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.image-flip .format-btn {
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--stroke);
    background: #fff;
    font-size: 0.9rem;
    cursor: pointer;
}

.image-flip .format-btn.active {
    background: var(--ink);
    color: #f8fafc;
    border-color: transparent;
}

.image-flip .range-wrap input {
    width: 100%;
}

.image-flip .color-input {
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--stroke);
    padding: 0 6px;
    background: #fff;
}

.image-flip .hint {
    font-size: 0.85rem;
    color: var(--muted);
}

.image-flip .actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.image-flip .primary-btn,
.image-flip .ghost-btn {
    padding: 12px 20px;
    border-radius: 999px;
    border: none;
    font-weight: 600;
    cursor: pointer;
}

.image-flip .primary-btn {
    background: linear-gradient(135deg, var(--accent-2), var(--accent-3));
    color: #fff;
    box-shadow: var(--shadow);
}

.image-flip .primary-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.image-flip .ghost-btn {
    background: rgba(19, 38, 63, 0.08);
    color: var(--ink-soft);
}

.image-flip .output {
    border-top: 1px solid var(--stroke);
    padding-top: 16px;
    display: grid;
    gap: 8px;
    color: var(--muted);
    font-size: 0.9rem;
}

.image-flip .download-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--ink);
}

.image-flip .tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 36px;
}

.image-flip .tip-card {
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--stroke);
    padding: 18px 20px;
}

.image-flip .tip-card h3 {
    margin-bottom: 8px;
    font-size: 1.05rem;
}

.image-flip .tip-card p {
    color: var(--ink-soft);
    font-size: 0.92rem;
    line-height: 1.6;
}

.image-flip .faq-block {
    margin-top: 36px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--stroke);
    padding: 24px;
    display: grid;
    gap: 16px;
}

.image-flip .faq-block h2 {
    font-size: 1.4rem;
}

.image-flip .faq-list {
    display: grid;
    gap: 16px;
}

.image-flip .faq-item h3 {
    font-size: 1rem;
    margin-bottom: 6px;
}

.image-flip .faq-item p {
    color: var(--ink-soft);
    font-size: 0.92rem;
    line-height: 1.6;
}

.image-flip .reveal {
    opacity: 0;
    transform: translateY(18px);
    animation: rise 0.8s ease forwards;
    animation-delay: var(--delay, 0s);
}

@keyframes rise {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 960px) {
    .image-flip .hero-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1100px) {
    .image-flip .tips {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .image-flip .page {
        padding: 32px 18px 72px;
    }

    .image-flip .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .image-flip .panel {
        padding: 20px;
    }
}