/* ─── 記事・FAQ ─── */
            .animation-page .article-content {
                background: #fff;
                padding: 30px;
                border-radius: var(--radius);
                border: 1px solid var(--border-soft);
            }
            .animation-page .article-content h3 {
                font-size: 1.25rem;
                border-bottom: 2px solid var(--primary);
                padding-bottom: 8px;
                margin-bottom: 20px;
                margin-top: 35px;
                color: var(--dark);
            }
            .animation-page .article-content h3:first-child {
                margin-top: 0;
            }
            .animation-page .article-content p {
                line-height: 1.7;
                margin-bottom: 15px;
                font-size: 0.95rem;
                color: #444;
            }
            .animation-page .article-content ul {
                padding-left: 20px;
                margin-bottom: 20px;
                font-size: 0.95rem;
                color: #444;
            }
            .animation-page .article-content li {
                margin-bottom: 8px;
                line-height: 1.6;
            }
            .animation-page .panel-label {
                font-size: 1rem;
                font-weight: bold;
                color: var(--dark);
                display: block;
                margin-bottom: 8px;
            }

            /* FAQ Styles */
            .animation-page .faq-item {
                margin-bottom: 20px;
                background: #f8f9fa;
                border-radius: var(--radius-sm);
                padding: 16px 20px;
                border-left: 3px solid var(--primary);
            }
            .animation-page .faq-q {
                font-weight: bold;
                color: var(--dark);
                font-size: 1rem;
                margin-bottom: 8px;
                display: flex;
                gap: 8px;
            }
            .animation-page .faq-q::before {
                content: "Q.";
                color: var(--primary);
            }
            .animation-page .faq-a {
                font-size: 0.9rem;
                color: #555;
                line-height: 1.6;
                display: flex;
                gap: 8px;
            }
            .animation-page .faq-a::before {
                content: "A.";
                color: var(--muted);
                font-weight: bold;
            }

            /* Related Tools */
            .animation-page .related-tools-grid {
                display: grid;
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 12px;
                margin-top: 15px;
            }
            .animation-page .related-tool-card {
                display: block;
                padding: 12px 15px;
                background: #fff;
                border: 1px solid var(--border-soft);
                border-radius: var(--radius-sm);
                text-decoration: none;
                transition: all 0.2s;
            }
            .animation-page .related-tool-card:hover {
                border-color: var(--primary);
                background: #f1f8ff;
                box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
            }
            .animation-page .rt-title {
                display: block;
                font-weight: bold;
                color: var(--primary);
                font-size: 0.95rem;
                margin-bottom: 4px;
            }
            .animation-page .rt-desc {
                display: block;
                font-size: 0.8rem;
                color: var(--muted);
                line-height: 1.4;
            }
        
/* Tool-local layout and controls; shared styles remain unchanged. */
.animation-page { min-width: 0; padding: 22px 24px 48px; }
.animation-page [hidden] { display: none !important; }
.animation-shell { max-width: 1180px; margin: 0 auto; }
.animation-page .breadcrumb-wrapper { margin-bottom: 12px; }
.animation-page .tool-title { font-size: clamp(1.25rem, 2vw, 1.7rem); margin: 0 0 10px; }
.animation-page .tool-lead { font-size: .9rem; line-height: 1.65; margin: 0 0 18px; text-align: left; }
.animation-workspace { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr); border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.animation-preview-panel { padding: 18px; display: flex; flex-direction: column; min-width: 0; }
.animation-panel-heading { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 5px; align-items: center; }
.animation-panel-heading h2 { font-size: .85rem; letter-spacing: .07em; margin: 0; color: var(--dark); }
.animation-panel-heading span { font-size: .7rem; color: var(--muted); }
.animation-page button { cursor: pointer; }
.animation-page button:focus-visible, .animation-page summary:focus-visible, .animation-page input:focus-visible, .animation-page select:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.animation-target-options { display: flex; gap: 6px; margin: 14px 0; }
.animation-target-options button, .animation-family-buttons button, .animation-templates button { border: 1px solid var(--border); border-radius: var(--radius-xs); background: #fff; color: var(--dark); padding: 7px 12px; font-size: .85rem; }
.animation-page button[aria-pressed="true"] { border-color: var(--primary); color: var(--primary); background: #eef9fc; box-shadow: inset 0 0 0 1px var(--primary); font-weight: 700; }
.animation-stage { min-height: 260px; flex: 1; position: relative; overflow: hidden; border: 1px solid var(--border-soft); border-radius: var(--radius-sm); background: #f7fafc; background-image: radial-gradient(#d8e3ea 1px, transparent 1px); background-size: 18px 18px; }
.animation-anchor { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); }
#animationPreview { width: max-content; transform-origin: center; }
.animation-heading { color: var(--dark); font-size: clamp(22px, 2.5vw, 34px); font-weight: 800; white-space: nowrap; text-align: center; }
.animation-heading span { display: block; margin-top: 6px; font-size: 12px; font-weight: 400; letter-spacing: .12em; color: var(--muted); }
#animationPreview img { display: block; border-radius: 16px; }
.animation-box { width: 110px; height: 110px; display: grid; place-items: center; border-radius: 12px; background: var(--primary); color: #fff; font-weight: 700; }
.animation-play-row { display: flex; align-items: center; gap: 18px; margin-top: 14px; }
.animation-play-row label { display: flex; align-items: center; gap: 6px; font-size: .9rem; }
.animation-primary { border: 0; border-radius: var(--radius-sm); background: var(--primary); color: #fff; padding: 10px 20px; font-size: .9rem; font-weight: 700; }
.animation-primary:hover { background: var(--primary-hover); }
.animation-page button:disabled { cursor: not-allowed; opacity: .5; }
.animation-note { font-size: .78rem; line-height: 1.6; color: var(--muted); margin: 10px 0 0; }
.animation-settings { min-width: 0; padding: 16px 18px 8px; border-left: 1px solid var(--border-soft); }
.animation-step { display: flex; align-items: center; gap: 10px; font-size: 1rem; margin: 0 0 10px; }
.animation-step span { border-radius: 999px; padding: 3px 8px; background: #eff6ff; color: #2563eb; font-size: .7rem; }
.animation-page summary { cursor: pointer; color: var(--dark); font-size: .85rem; font-weight: 700; padding: 9px 0; }
.animation-templates { border-bottom: 1px solid var(--border-soft); margin-bottom: 10px; }
#templateButtons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; padding-bottom: 10px; }
.animation-templates button { text-align: left; font-size: .75rem; padding: 8px; }
.animation-family-buttons { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-bottom: 12px; }
.animation-controls { display: grid; gap: 10px; }
.animation-control { min-width: 0; }
.animation-control-head { display: flex; justify-content: space-between; gap: 8px; align-items: center; font-size: .82rem; }
.animation-control-head label { font-weight: 600; }
.animation-number-wrap { display: flex; align-items: center; gap: 5px; }
.animation-number-wrap input { width: 72px; min-width: 0; padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; font: inherit; }
.animation-number-wrap span { min-width: 22px; font-size: .75rem; color: var(--muted); }
.animation-control input[type="range"] { display: block; width: 100%; min-width: 0; margin: 6px 0 0; accent-color: var(--primary); height: 14px; }
.animation-control select { width: 145px; max-width: 58%; font: inherit; padding: 5px 6px; border: 1px solid var(--border); border-radius: 4px; background: #fff; }
.animation-fade-label { display: flex; align-items: center; gap: 6px; font-size: .82rem; }
.animation-page input[type="checkbox"] { accent-color: var(--primary); }
.animation-timing { border-top: 1px solid var(--border-soft); margin-top: 12px; padding-top: 10px; }
.animation-timing h3 { font-size: .8rem; color: var(--muted); margin: 0 0 8px; }
#timingSettings { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 12px; }
#timingSettings .animation-control-head { flex-wrap: wrap; }
#timingSettings select { width: 100%; max-width: none; }
.animation-copy { width: 100%; margin-top: 14px; }
.animation-copy.copied { background: var(--success); }
.animation-status { font-size: .75rem; min-height: 1.4em; margin: 6px 0 0; color: var(--muted); }
.animation-page .form-hint-error:not([hidden]) { display: block; margin: 8px 0; }
.animation-code { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 2px 16px; margin-top: 12px; }
.animation-code pre { background: var(--code-bg); color: #f8f9fa; padding: 18px; border-radius: var(--radius-sm); overflow: auto; font-size: .85rem; line-height: 1.6; max-height: 450px; }
.animation-page .article-content { margin-top: 32px; }
@media (max-width: 1100px) { .animation-page { padding-left: 16px; padding-right: 16px; } .animation-preview-panel, .animation-settings { padding-left: 12px; padding-right: 12px; } }
@media (max-width: 900px) {
    .animation-workspace { grid-template-columns: minmax(0, 1fr); }
    .animation-settings { border-left: 0; border-top: 1px solid var(--border-soft); padding: 16px; }
    .animation-stage { min-height: 245px; }
}
@media (max-width: 600px) {
    .animation-page { padding: 16px 12px 36px; }
    .animation-page .tool-title { line-height: 1.5; }
    .animation-page .tool-lead { font-size: .84rem; }
    .animation-page .article-content { padding: 18px 14px; }
    .animation-page .related-tools-grid { grid-template-columns: minmax(0, 1fr); }
    .animation-stage { min-height: 220px; }
    .animation-settings { padding: 14px 12px; }
}
/* Keep the main controls within shorter desktop viewports. */
@media (min-width: 901px) and (max-height: 850px) {
    .animation-page { padding-top: 10px; }
    .animation-page .breadcrumb-wrapper { padding-top: 0; margin-bottom: 8px; }
    .animation-page .breadcrumb { padding-top: 5px; padding-bottom: 5px; }
    .animation-page .tool-title { margin-bottom: 6px; }
    .animation-page .tool-lead { margin-bottom: 10px; }
    .animation-step { margin-bottom: 6px; }
    .animation-templates summary { padding-top: 6px; padding-bottom: 6px; }
    .animation-family-buttons { margin-bottom: 8px; }
    .animation-family-buttons button { padding-top: 5px; padding-bottom: 5px; }
    .animation-controls { gap: 8px; }
    .animation-timing { margin-top: 8px; padding-top: 8px; }
    .animation-copy { margin-top: 10px; }
}