/* Home page (tool) layout. Moved out of the inline <style> of the pre-Astro index.html. */
    /* Tool page layout. Shared tokens live in /assets/site.css. */
    .hero { background: var(--primary-soft); border-bottom: 1px solid var(--primary-ring); }
    .hero__inner { padding-top: 22px; padding-bottom: 20px; }
    .hero h1 { margin: 12px 0 6px; font-size: clamp(30px, 4vw, 42px); line-height: 1.1; letter-spacing: -.025em; color: var(--ink); }
    .hero__lead { margin: 0; max-width: 720px; font-size: clamp(17px, 2vw, 20px); line-height: 1.5; color: var(--muted); }
    .hero__sub { margin: 4px 0 0; max-width: 720px; font-size: 14px; color: var(--muted); }
    .hero__points { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 22px; }
    .hero__points li { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 500; color: var(--ink-2); }
    .hero__points .icon { width: 16px; height: 16px; color: var(--primary); stroke-width: 2.6; }

    .tool { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 24px; align-items: start; margin-top: -1px; padding-top: 24px; }
    .tool__stage { min-width: 0; position: sticky; top: calc(var(--header-h) + 16px); }
    .stage-card { border: 1px solid var(--rule-strong); border-radius: 12px; box-shadow: var(--shadow-lg); overflow: hidden; background: #E2E8F0; }
    #canvas-frame { position: relative; width: 100%; height: 600px; min-height: 0; background: #E2E8F0; overflow: hidden; }
    #artboard { position: absolute; overflow: hidden; touch-action: none; background-color: #fff; }
    #artboard.is-transparent { background-color: #fff; background-image: conic-gradient(#EEF2F7 25%, #FFF 0 50%, #EEF2F7 0 75%, #FFF 0); background-size: 16px 16px; }
    #grid-canvas { display: block; width: 100%; height: 100%; }
    #horizon-hit-area { position: absolute; left: 0; width: 100%; height: 16px; transform: translateY(-50%); cursor: ns-resize; z-index: 10; }
    #handles-layer { position: absolute; inset: 0; pointer-events: none; }
    .canvas-handle { width: 44px; height: 44px; background: transparent; border: 0; padding: 0; cursor: grab; position: absolute; z-index: 20; transform: translate(-50%, -50%); pointer-events: auto; }
    .canvas-handle.is-dragging { cursor: grabbing; }
    .canvas-handle::after { content: ''; position: absolute; left: 15px; top: 15px; width: 14px; height: 14px; box-sizing: border-box; border: 2.5px solid var(--primary); border-radius: 50%; background: #fff; box-shadow: 0 1px 4px rgba(15, 23, 42, .3); }
    .canvas-handle:focus-visible { outline: none; }
    .canvas-handle:focus-visible::after { box-shadow: 0 0 0 4px var(--primary-ring); }
    #fullscreen-btn { position: absolute; top: 12px; right: 12px; z-index: 40; width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; background: rgba(255, 255, 255, .96); border: 1px solid var(--rule); border-radius: 10px; box-shadow: var(--shadow-sm); color: var(--ink-2); }
    #fullscreen-btn:hover { background: #fff; color: var(--primary); }
    #fullscreen-icon .icon-min, #fullscreen-icon[icon="lucide:minimize"] .icon-max { display: none; }
    #fullscreen-icon[icon="lucide:minimize"] .icon-min { display: block; }
    #canvas-frame:fullscreen, #canvas-frame:-webkit-full-screen { width: 100vw; height: 100vh; max-height: none; border-radius: 0; border: none; background: #0F172A; }
    .stage-badge { position: absolute; bottom: 14px; left: 14px; z-index: 30; display: flex; align-items: center; gap: 6px; padding: 5px 12px; background: rgba(255, 255, 255, .92); border: 1px solid var(--rule); border-radius: 999px; box-shadow: var(--shadow-sm); }
    .stage-badge .icon { width: 15px; height: 15px; color: var(--success); }
    .stage-badge span { font-size: 12px; font-weight: 500; color: #5C5C5C; }
    .stage-hint { margin: 10px 2px 0; max-width: 760px; font-size: 13px; line-height: 1.5; color: var(--muted); }

    .panel { background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 6px 18px; }
    .panel__section { padding: 13px 0; border-bottom: 1px solid var(--rule); display: grid; gap: 14px; }
    .panel__label, .field label, .field > span:first-child { font-size: 13px; font-weight: 600; color: var(--ink-2); }
    .panel__label { display: block; margin-bottom: -4px; }
    .panel__note { margin: 0; font-size: 12px; line-height: 1.5; color: var(--muted); }
    .panel__note:empty { display: none; }
    .segmented { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; padding: 4px; background: var(--surface-2); border-radius: 10px; }
    .mode-btn, .aspect-btn { border: 1px solid transparent; border-radius: 8px; padding: 7px 6px; font-size: 13px; font-weight: 600; line-height: 1.2; }
    .mode-btn[aria-pressed="false"] { background: transparent; color: #5C5C5C; border-color: transparent; }
    .mode-btn[aria-pressed="false"]:hover { color: var(--ink); }
    .mode-btn[aria-pressed="true"] { background: #fff; color: var(--primary-hover); border-color: var(--primary-ring); box-shadow: var(--shadow-sm); }
    .aspect-row { display: flex; flex-wrap: wrap; gap: 6px; }
    .aspect-btn { flex: 1 1 auto; padding: 6px 10px; font-weight: 500; }
    .aspect-btn[aria-pressed="false"] { background: #fff; color: #5C5C5C; border-color: var(--rule-strong); }
    .aspect-btn[aria-pressed="false"]:hover { color: var(--ink); }
    .aspect-btn[aria-pressed="true"] { background: var(--primary-soft); color: var(--primary-hover); border-color: var(--primary); }
    .field { display: grid; gap: 8px; font-size: 13px; color: var(--ink-2); }
    .field__row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
    .field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .mono { font-family: var(--mono); font-size: 12px; color: #5C5C5C; text-transform: uppercase; }
    .num { width: 72px; padding: 4px 8px; font-family: var(--mono); font-size: 12px; text-align: right; border: 1px solid var(--rule-strong); border-radius: 6px; background: #fff; }
    .color-field { display: flex; align-items: center; gap: 8px; height: 36px; }
    #line-color { width: 36px; height: 36px; padding: 2px; border: 1px solid var(--rule-strong); border-radius: 8px; background: #fff; cursor: pointer; }
    #line-weight { height: 36px; padding: 0 8px; border: 1px solid var(--rule-strong); border-radius: 8px; background: #fff; font-size: 13px; }
    input[type="range"] { width: 100%; accent-color: var(--primary); margin: 0; }
    .vp-field { width: 100%; min-width: 0; padding: 5px 7px; border: 1px solid var(--rule-strong); border-radius: 6px; font-size: 12px; background: #fff; }
    .vp-field:disabled { background: var(--surface-2); color: #5C5C5C; }
    .vp-field::placeholder { color: #5C5C5C; opacity: 1; }
    .vp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
    .custom-size { display: grid; gap: 6px; }
    .custom-size .field { grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 8px; font-size: 12px; color: #5C5C5C; }
    #custom-size-error { margin: 0; color: var(--danger); font-size: 12px; }
    #custom-size-error:empty { display: none; }
    .advanced { border-top: 1px solid var(--rule); }
    .advanced summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; padding: 12px 0; font-size: 13px; font-weight: 600; color: var(--ink-2); }
    .advanced summary::-webkit-details-marker { display: none; }
    .advanced summary .icon { width: 16px; height: 16px; color: #5C5C5C; transition: transform .15s; }
    .advanced[open] summary .icon { transform: rotate(180deg); }
    #advanced-content { display: grid; gap: 16px; padding: 2px 2px 16px; max-height: 380px; overflow: auto; overscroll-behavior: contain; }
    .checks { display: grid; gap: 8px; }
    .check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
    .check input { width: 15px; height: 15px; accent-color: var(--primary); margin: 0; }
    .check span { font-size: 13px; color: #5C5C5C; }
    .panel__export { border-bottom: 0; gap: 8px; }
    .panel__export + .advanced { margin-top: 2px; }
    .btn-lg { padding: 11px 16px; font-size: 15px; }
    .export-row { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 6px; }
    .link-btn { background: none; border: 0; padding: 2px; justify-self: center; font-size: 13px; font-weight: 500; color: var(--primary); }
    .link-btn:hover { color: var(--primary-hover); text-decoration: underline; }

    .intent { margin-top: 48px; }
    .intent-target { scroll-margin-top: calc(var(--header-h) + 24px); }
    .intent-target:focus-visible { outline: 2px solid var(--primary); outline-offset: 6px; border-radius: 6px; }
    .intent-links { display: flex; flex-wrap: wrap; gap: 8px; }
    .intent-links a { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--rule-strong); background: #fff; color: var(--ink-2); font-size: 14px; font-weight: 500; text-decoration: none; }
    .intent-links a:hover { border-color: var(--primary); color: var(--primary-hover); background: var(--primary-soft); }
    .block { margin-top: 56px; }
    .block > h2, .uses h2, .cta-band h2 { margin: 0 0 16px; font-size: clamp(22px, 3vw, 28px); line-height: 1.25; letter-spacing: -.015em; color: var(--ink); }
    .block > p, .uses p, .faq p, .card p, .cta-band p { color: #5C5C5C; font-size: 15px; line-height: 1.7; }
    .block > p { max-width: 780px; margin: 0 0 10px; }
    .steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .steps li { background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-lg); padding: 18px; display: grid; gap: 6px; align-content: start; }
    .steps__n { width: 30px; height: 30px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-size: 14px; font-weight: 700; margin-bottom: 6px; }
    .steps strong { font-size: 15px; color: var(--ink); }
    .steps li > span:last-child { font-size: 14px; color: #5C5C5C; line-height: 1.5; }
    .cards { display: grid; gap: 14px; }
    .cards--4 { grid-template-columns: repeat(4, 1fr); }
    .card { background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-lg); padding: 20px; }
    .card h3 { margin: 12px 0 6px; font-size: 16px; color: var(--ink); }
    .card p { margin: 0; font-size: 14px; line-height: 1.6; }
    .card__icon { width: 40px; height: 40px; border-radius: 10px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-size: 13px; font-weight: 700; }
    .uses { margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .card--use { padding: 24px; }
    .card--use h2 { font-size: 19px; margin-bottom: 10px; }
    .card--use p { margin: 0 0 10px; }
    .card--use p:last-child { margin-bottom: 0; }
    .card--use a { white-space: nowrap; }
    .faq { display: grid; gap: 10px; max-width: 860px; }
    .faq details { background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 0 18px; }
    .faq summary { cursor: pointer; padding: 14px 0; font-size: 15px; font-weight: 600; color: var(--ink); }
    .faq details p { margin: 0 0 16px; font-size: 14px; }
    .cta-band { margin-top: 56px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 28px 32px; background: var(--primary); border-radius: var(--radius-lg); }
    .cta-band h2 { color: #fff; margin-bottom: 6px; }
    .cta-band p { margin: 0; color: #fff; }
    .cta-band .btn-primary { background: #fff; color: var(--primary-hover); border-color: #fff; }
    .cta-band .btn-primary:hover { background: var(--primary-soft); }

    @media (max-width: 1023px) {
      .tool { grid-template-columns: 1fr; }
      #canvas-frame { height: min(55vh, 480px); min-height: 280px; }
      .panel, .tool__stage { position: static; }
      #advanced-content { max-height: none; overflow: visible; }
      .cards--4, .steps { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 640px) {
      .hero__inner { padding-top: 28px; padding-bottom: 26px; }
      .uses, .cards--4, .steps { grid-template-columns: 1fr; }
      .cta-band { flex-direction: column; align-items: flex-start; padding: 24px; }
    }
  

    /* Reference photo, scene presets and line matching. */
    #photo-layer { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform-origin: 50% 50%; pointer-events: none; user-select: none; -webkit-user-drag: none; }
    #grid-canvas { position: relative; }
    #calib-layer { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; z-index: 15; }
    #calib-layer .calib-handle { pointer-events: all; cursor: grab; touch-action: none; }
    #calib-layer .calib-handle:active { cursor: grabbing; }
    #drop-overlay { position: absolute; inset: 0; z-index: 50; display: none; align-items: center; justify-content: center; padding: 24px; text-align: center; background: rgba(37, 99, 235, .12); border: 2px dashed var(--primary); border-radius: 12px; color: var(--primary-hover); font-weight: 600; font-size: 16px; pointer-events: none; }
    #canvas-frame.is-dropping #drop-overlay { display: flex; }
    #photo-upload-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
    #photo-upload-btn .icon { width: 16px; height: 16px; }
    #photo-empty, #photo-controls { display: grid; gap: 10px; }
    #photo-controls[hidden], #photo-empty[hidden] { display: none; }
    .photo-meta { display: flex; align-items: center; gap: 10px; min-width: 0; }
    .photo-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; color: var(--ink-2); }
    .photo-meta .link-btn { flex: none; }
    #calibrate-btn[aria-pressed="true"] { background: var(--primary-soft); border-color: var(--primary); color: var(--primary-hover); }
    .photo-privacy { display: flex; align-items: flex-start; gap: 6px; color: var(--success); }
    .photo-privacy .icon { flex: none; width: 15px; height: 15px; margin-top: 1px; }
    .preset-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .preset-btn { display: grid; gap: 1px; padding: 7px 6px; border: 1px solid var(--rule-strong); border-radius: 8px; background: #fff; color: var(--ink-2); font-size: 13px; font-weight: 600; line-height: 1.2; text-align: center; }
    .preset-btn small { font-size: 11px; font-weight: 500; color: #5C5C5C; }
    .preset-btn:hover { border-color: var(--primary); color: var(--primary-hover); }
    .preset-btn[aria-pressed="true"] { background: var(--primary-soft); border-color: var(--primary); color: var(--primary-hover); }

    /* Keyword landing pages. */
    .crumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--muted); }
    .crumbs a { color: var(--muted); }
    .landing .block > h3 { margin: 24px 0 8px; font-size: 18px; color: var(--ink); }
    .landing .block ul, .landing .block ol:not(.steps) { max-width: 780px; color: #5C5C5C; font-size: 15px; line-height: 1.7; padding-left: 22px; }
    .setups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .setup { display: grid; gap: 8px; align-content: start; }
    .setup h3 { margin: 0; }
    .setup .btn { justify-self: start; }
    .setup__params { margin: 0; font-size: 11px; text-transform: none; word-break: break-word; color: #5C5C5C; }
    .cards--3 { grid-template-columns: repeat(3, 1fr); }
    .card--link { text-decoration: none; transition: border-color .15s; }
    .card--link:hover { border-color: var(--primary); }
    .card--link h3 { margin-top: 0; color: var(--primary-hover); }
    .param-table { width: 100%; max-width: 860px; border-collapse: collapse; font-size: 14px; background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-md); overflow: hidden; }
    .param-table th, .param-table td { padding: 10px 12px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; color: #5C5C5C; }
    .param-table th { background: var(--surface-2); color: var(--ink-2); font-weight: 600; }
    .table-wrap { overflow-x: auto; }
    .figure { margin: 18px 0; max-width: 860px; }
    .figure img { display: block; width: 100%; height: auto; border: 1px solid var(--rule); border-radius: var(--radius-md); background: #fff; }
    .figure figcaption { margin-top: 6px; font-size: 13px; color: var(--muted); }
    @media (max-width: 1023px) { .setups, .cards--3 { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 640px) { .setups, .cards--3 { grid-template-columns: 1fr; } }
    .sheet-links { display: flex; flex-wrap: wrap; gap: 6px; }
    .hero__more { margin: 10px 0 0; font-size: 14px; color: var(--muted); }
    .sample-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
    .sample-btn { padding: 4px 10px; border: 1px solid var(--rule-strong); border-radius: 999px; background: #fff; font-size: 12px; font-weight: 500; color: var(--ink-2); }
    .sample-btn:hover { border-color: var(--primary); color: var(--primary-hover); }
    .device-select { height: 36px; padding: 0 8px; border: 1px solid var(--rule-strong); border-radius: 8px; background: #fff; font-size: 13px; width: 100%; }