/* Browser tools, calculators, guides and the Pro page. Uses the colour tokens from site.css. */

:root {
  --chk-a: #e3e7ef;
  --chk-b: #f4f6fa;
  --pass: var(--ok);
  --warn: #c98200;
  --fail: var(--no);
  --pro: #7c4dff;
  --pro-soft: #efe9ff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) { --chk-a: #1b2134; --chk-b: #222a40; --warn: #f0b54a; --pro: #a98bff; --pro-soft: #2a2245; }
}
:root[data-theme='dark'] { --chk-a: #1b2134; --chk-b: #222a40; --warn: #f0b54a; --pro: #a98bff; --pro-soft: #2a2245; }

/* ---------- tool page head ---------- */
.tool-head { padding-bottom: 20px; }
.tool-title-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px 24px; flex-wrap: wrap; }
.tool-title-row > div { display: grid; gap: 12px; min-width: 0; max-width: 760px; }
.tool-title-row h1 { font-size: clamp(28px, 3.6vw, 42px); }

.pro-chip {
  display: inline-flex; align-items: center; gap: 8px; flex: none;
  font: 600 14px/1 var(--font-body); padding: 10px 14px; border-radius: 999px; cursor: pointer;
  border: 1.5px solid var(--pro); color: var(--pro); background: transparent;
}
.pro-chip:hover { background: var(--pro-soft); }
.pro-chip.is-pro { background: var(--pro); color: #fff; }
.pro-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.pro-tag {
  display: inline-flex; align-items: center; gap: 4px; vertical-align: 1px;
  font: 600 10px/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase;
  padding: 3px 5px; border-radius: 4px; background: var(--pro-soft); color: var(--pro);
}
.pro-tag svg { width: 11px; height: 11px; stroke-width: 2.4; }
html.is-pro .pro-tag { display: none; }

/* ---------- workspace ---------- */
.workspace { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 20px; align-items: start; }
.ws-side { display: grid; gap: 12px; position: sticky; top: calc(var(--header-h) + var(--safe-top) + 12px); max-height: calc(100vh - var(--header-h) - 24px); overflow: auto; padding: 2px 4px 12px 2px; scrollbar-width: thin; }
.ws-main { display: grid; gap: 16px; min-width: 0; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.panel > summary, .panel-h {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 13px 16px; font: 600 15px/1.2 var(--font-body); cursor: pointer; list-style: none;
}
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::after { content: '+'; font: 500 18px/1 var(--font-mono); color: var(--ink-3); }
.panel[open] > summary::after { content: '−'; }
.panel-h { cursor: default; }
.panel-body { display: grid; gap: 14px; padding: 2px 16px 16px; }
.panel-n { font: 500 12px/1 var(--font-mono); color: var(--ink-3); margin-left: auto; }

.ctl { display: grid; gap: 7px; }
.ctl > label, .ctl > .ctl-label { font: 500 12px/1.3 var(--font-mono); color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.05em; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.ctl output { font: 500 12px/1 var(--font-mono); color: var(--ink); text-transform: none; letter-spacing: 0; }
.ctl-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.ctl input[type='range'] { width: 100%; accent-color: var(--accent); margin: 0; }
.ctl select, .ctl input[type='text'], .ctl input[type='number'], .field {
  width: 100%; font: inherit; font-size: 14px; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 9px; padding: 9px 10px;
}
.ctl select:focus, .ctl input:focus, .field:focus { outline: none; border-color: var(--ink-3); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent); }
.ctl input[type='color'] { width: 100%; height: 38px; padding: 3px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); cursor: pointer; }
.hint { font-size: 13px; color: var(--ink-3); line-height: 1.45; }

.seg { display: flex; flex-wrap: wrap; gap: 2px; background: var(--surface-2); padding: 3px; border-radius: 10px; }
.seg button {
  flex: 1 1 auto; display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  font: 500 13px/1 var(--font-body); padding: 8px 9px; border: 0; border-radius: 8px; background: transparent; color: var(--ink-2); cursor: pointer; white-space: nowrap;
}
.seg button:hover { color: var(--ink); }
.seg button[aria-pressed='true'] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgb(0 0 0 / 0.12); }
.seg button:disabled { opacity: 0.45; cursor: not-allowed; }

.toggle { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 14px; }
.toggle input { width: 18px; height: 18px; margin: 0; accent-color: var(--accent); flex: none; }

.chips-pick { display: flex; flex-wrap: wrap; gap: 6px; }
.chips-pick button {
  display: inline-flex; align-items: center; gap: 6px; font: 500 13px/1 var(--font-body);
  padding: 7px 10px 7px 8px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--bg); color: var(--ink-2); cursor: pointer;
}
.chips-pick button .sw { width: 14px; height: 14px; border-radius: 50%; background: var(--c); box-shadow: inset 0 0 0 1px rgb(0 0 0 / 0.15); }
.chips-pick button[aria-pressed='true'] { border-color: var(--ink); color: var(--ink); background: var(--surface); }
.chips-pick button .pro-tag { margin-left: 2px; }

/* drop zone */
.dropzone {
  display: grid; justify-items: center; gap: 8px; text-align: center; cursor: pointer;
  padding: 22px 16px; border: 2px dashed var(--line); border-radius: 12px; background: var(--bg); color: var(--ink-2);
  transition: border-color 0.15s, background-color 0.15s;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--ink-3); }
.dropzone.is-over { border-color: var(--accent); background: var(--accent-soft); }
.dropzone svg { width: 30px; height: 30px; color: var(--ink-3); }
.dropzone strong { color: var(--ink); font-size: 15px; }
.dropzone .mono { font-size: 11px; color: var(--ink-3); }
.drop-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.drop-actions .btn { flex: 1 1 auto; }

/* model list */
.model-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; max-height: 320px; overflow: auto; }
.model-list li {
  display: grid; grid-template-columns: 18px minmax(0, 1fr) auto auto; gap: 8px; align-items: center;
  padding: 7px 8px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); font-size: 14px;
}
.model-list li.is-active { border-color: var(--accent); }
.model-list input[type='checkbox'] { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.model-list .m-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: pointer; }
.model-list .m-meta { font: 400 11px/1.2 var(--font-mono); color: var(--ink-3); display: block; }
.model-list select { font: inherit; font-size: 12px; padding: 4px 6px; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); max-width: 108px; }
.model-list .m-x { width: 26px; height: 26px; min-width: 0; padding: 0; border-radius: 6px; }
.model-list .m-x svg { width: 15px; height: 15px; }
.list-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-3); }
.list-tools select { font: inherit; font-size: 13px; padding: 5px 8px; border-radius: 7px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); }

/* viewport */
.tool-vp { background: var(--vp-bg); border: 1px solid var(--vp-line); border-radius: 16px; padding: 8px; color: var(--vp-ink); box-shadow: var(--shadow); }
.tool-vp-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 2px 6px 8px 8px; font: 500 12px/1.3 var(--font-mono); }
.tool-vp-bar b { color: #fff; font-weight: 500; }
.tool-vp-stage { position: relative; border-radius: 10px; overflow: hidden; aspect-ratio: 16 / 10; background: radial-gradient(120% 90% at 50% 15%, #2a3554 0%, var(--vp-bg) 72%); }
.tool-vp-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; }
.tool-vp-stage canvas:active { cursor: grabbing; }
.vp-empty { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; color: var(--vp-ink); font-size: 14px; pointer-events: none; }
.vp-empty strong { display: block; color: #fff; font: 600 18px/1.3 var(--font-display); margin-bottom: 6px; }
.vp-busy { position: absolute; inset: auto 12px 12px auto; font: 500 12px/1 var(--font-mono); background: rgb(0 0 0 / 0.5); color: #fff; padding: 7px 9px; border-radius: 7px; }
.vp-help { position: absolute; left: 12px; bottom: 10px; font: 500 11px/1 var(--font-mono); color: rgb(255 255 255 / 0.6); pointer-events: none; }
.checker { background-color: var(--chk-b); background-image: linear-gradient(45deg, var(--chk-a) 25%, transparent 25%), linear-gradient(-45deg, var(--chk-a) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, var(--chk-a) 75%), linear-gradient(-45deg, transparent 75%, var(--chk-a) 75%); background-size: 16px 16px; background-position: 0 0, 0 8px, 8px -8px, -8px 0; }

/* output bar */
.out-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.out-bar h2 { font-size: 20px; }
.out-bar .row-actions { gap: 8px; }
.progress { height: 6px; border-radius: 3px; background: var(--surface-2); overflow: hidden; }
.progress i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.15s; }

/* icon sheet */
.icon-sheet { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px; }
.icon-cell { position: relative; display: grid; gap: 6px; padding: 6px; border: 1.5px solid var(--line); border-radius: 12px; background: var(--surface); cursor: pointer; text-align: left; font: inherit; color: inherit; }
.icon-cell:hover { border-color: var(--ink-3); }
.icon-cell.is-active { border-color: var(--accent); }
.icon-cell canvas, .icon-cell img { width: 100%; aspect-ratio: 1; border-radius: 8px; display: block; }
.icon-cell .cap { font: 500 11px/1.3 var(--font-mono); color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.icon-cell .lock { position: absolute; top: 10px; right: 10px; }
.sheet-note { font-size: 13px; color: var(--ink-3); }

/* toasts */
.toasts { position: fixed; z-index: 300; left: 50%; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); display: grid; gap: 8px; width: min(520px, calc(100vw - 32px)); pointer-events: none; }
.toast { padding: 12px 16px; border-radius: 12px; background: var(--ink); color: var(--bg); font-size: 14px; box-shadow: var(--shadow); transition: opacity 0.3s, transform 0.3s; pointer-events: auto; }
.toast-ok { background: var(--ok); color: #fff; }
.toast-error { background: var(--no); color: #fff; }
.toast.is-out { opacity: 0; transform: translateY(8px); }

/* pro dialog */
.pro-dialog { width: min(640px, calc(100vw - 32px)); border: 1px solid var(--line); border-radius: 18px; padding: 24px; background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }
.pro-dialog::backdrop { background: var(--scrim); }
.pro-dialog h2 { margin: 6px 0 8px; font-size: 24px; }
.pro-dialog-x { position: absolute; top: 12px; right: 12px; }
.pro-dialog-why { color: var(--ink-2); margin-bottom: 12px; }
.pro-dialog-list { margin: 0 0 16px; }
.pro-ways { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.pro-way { display: grid; gap: 8px; align-content: start; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
.pro-way h3 { font-size: 15px; }
.pro-way p { font-size: 14px; color: var(--ink-2); }
.pro-key { display: flex; gap: 6px; }
.pro-key input { flex: 1; min-width: 0; font: 400 12px/1 var(--font-mono); padding: 9px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); }
.pro-key-msg { color: var(--no); min-height: 1em; }

/* ---------- info sections under a tool ---------- */
.tool-info { display: grid; gap: 0; margin-top: clamp(40px, 5vw, 64px); }
.tool-info > section { padding-block: 32px; border-top: 1px solid var(--line); display: grid; gap: 16px; }
.tool-info h2 { font-size: clamp(20px, 2vw, 26px); }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: st; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 16px; }
.steps li { counter-increment: st; display: grid; gap: 6px; align-content: start; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink-2); font-size: 15px; }
.steps li::before { content: counter(st); font: 600 13px/26px var(--font-mono); width: 26px; height: 26px; text-align: center; border-radius: 7px; background: var(--accent); color: var(--accent-ink); }
.steps strong { color: var(--ink); }
.compare { width: 100%; border-collapse: collapse; font-size: 15px; }
.compare th, .compare td { text-align: left; padding: 11px 14px 11px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare thead th { font: 500 12px/1.3 var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); }
.compare td:first-child { color: var(--ink-2); }
.compare .yes { color: var(--ok); font-weight: 600; }
.related-tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 12px; }

/* ---------- tools hub ---------- */
.hub-hero { display: grid; gap: 14px; padding-block: 8px 28px; max-width: 820px; }
.tool-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: clamp(16px, 2vw, 24px); }
.tool-card {
  position: relative; display: grid; grid-template-rows: auto 1fr; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: inherit;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.tool-card:hover { border-color: var(--ink-3); transform: translateY(-2px); box-shadow: var(--shadow); }
.tool-card-art { aspect-ratio: 16 / 9; background: var(--vp-bg); display: grid; place-items: center; overflow: hidden; }
.tool-card-art img { width: 100%; height: 100%; object-fit: cover; }
.tool-card-art svg { width: 64px; height: 64px; color: var(--accent); stroke-width: 1.4; }
.tool-card-body { display: grid; gap: 8px; padding: 16px 18px 18px; align-content: start; }
.tool-card-body h3 { font: 600 20px/1.2 var(--font-display); }
.tool-card-body p { color: var(--ink-2); font-size: 15px; }
.tool-card-body .mono { font-size: 12px; color: var(--ink-3); }
.mini-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); gap: 12px; }
.mini-card { display: grid; gap: 6px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); text-decoration: none; color: inherit; transition: border-color 0.15s; }
.mini-card:hover { border-color: var(--ink-3); }
.mini-card h3 { font-size: 16px; }
.mini-card p { font-size: 14px; color: var(--ink-2); }
.mini-card .mono { font-size: 11px; color: var(--ink-3); }
.hub-section { padding-top: clamp(40px, 5vw, 64px); }

.support-band { margin-top: clamp(48px, 6vw, 80px); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); align-items: center; padding: clamp(20px, 3vw, 36px); border-radius: 20px; background: var(--vp-bg); color: var(--vp-ink); }
.support-band h2 { color: #fff; }
.support-band p { color: var(--vp-ink); }
.support-band .eyebrow { color: var(--vp-ink); }
.support-band > div { display: grid; gap: 14px; justify-items: start; }
.tier-strip { display: grid; gap: 8px; width: 100%; }
.tier-strip div { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 12px 14px; border-radius: 12px; background: rgb(255 255 255 / 0.06); border: 1px solid rgb(255 255 255 / 0.1); }
.tier-strip b { color: #fff; font: 600 16px/1.2 var(--font-display); }
.tier-strip span { font-size: 13px; }
.tier-strip .price { color: #fff; font-size: 18px; }

/* ---------- pro page ---------- */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 16px; align-items: stretch; }
.tier { display: grid; grid-template-rows: auto auto 1fr auto; gap: 12px; padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; }
.tier.is-featured { border: 2px solid var(--accent); box-shadow: var(--shadow); }
.tier h3 { font: 600 20px/1.2 var(--font-display); }
.tier .price { font-size: 30px; }
.tier .price small { font: 500 14px/1 var(--font-body); color: var(--ink-3); }
.tier .ribbon { justify-self: start; font: 600 11px/1 var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; padding: 5px 8px; border-radius: 6px; background: var(--accent); color: var(--accent-ink); }
.pro-box { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; padding: 20px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.pro-box > div { display: grid; gap: 10px; align-content: start; }
.pro-status { padding: 14px 16px; border-radius: 12px; background: var(--pro-soft); color: var(--ink); font-size: 15px; }

/* ---------- calculators ---------- */
.calc { display: grid; grid-template-columns: minmax(280px, 380px) minmax(0, 1fr); gap: 20px; align-items: start; }
.calc-form { display: grid; gap: 14px; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); position: sticky; top: calc(var(--header-h) + var(--safe-top) + 12px); }
.calc-out { display: grid; gap: 16px; min-width: 0; }
.big-number { display: grid; gap: 4px; padding: 18px 20px; border-radius: var(--radius); background: var(--vp-bg); color: var(--vp-ink); }
.big-number b { font: 600 clamp(30px, 4vw, 44px)/1.05 var(--font-display); color: #fff; font-variant-numeric: tabular-nums; }
.big-number span { font-size: 14px; }
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); gap: 10px; }
.stat-card { display: grid; gap: 4px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.stat-card b { font: 600 22px/1.1 var(--font-display); font-variant-numeric: tabular-nums; }
.stat-card span { font-size: 13px; color: var(--ink-3); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14.5px; font-variant-numeric: tabular-nums; }
.data-table th, .data-table td { padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.data-table thead th { font: 500 11.5px/1.3 var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); position: sticky; top: 0; background: var(--bg); }
.data-table td.num, .data-table th.num { text-align: right; padding-right: 0; padding-left: 12px; }
.data-table tr.is-best td { background: color-mix(in srgb, var(--ok) 10%, transparent); }
.data-table .note { display: block; font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }
.bar { display: block; height: 6px; border-radius: 3px; background: var(--surface-2); margin-top: 6px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: 3px; }
.rows-editor { display: grid; gap: 6px; }
.rows-editor .row { display: grid; grid-template-columns: 22px minmax(0, 1fr) 92px 30px; gap: 6px; align-items: center; }
.rows-editor input { min-width: 0; font: inherit; font-size: 14px; padding: 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); }
.rows-editor input[type='color'] { padding: 2px; height: 34px; width: 22px; border: 0; background: transparent; }
.code-out { position: relative; }
.code-out pre { margin: 0; max-height: 360px; overflow: auto; padding: 14px 16px; border-radius: 12px; background: var(--vp-bg); color: #dfe6ff; font: 400 13px/1.55 var(--font-mono); white-space: pre; }
.code-out .btn { position: absolute; top: 8px; right: 8px; }

/* ---------- model check report ---------- */
.report { display: grid; gap: 14px; }
.report-head { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; }
.score { display: inline-flex; align-items: baseline; gap: 8px; font: 600 28px/1 var(--font-display); }
.score small { font: 500 13px/1 var(--font-mono); color: var(--ink-3); }
.target-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.checks { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.checks li { display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); align-items: start; }
.checks .st { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font: 700 13px/1 var(--font-mono); color: #fff; margin-top: 1px; }
.checks .st.pass { background: var(--pass); }
.checks .st.warn { background: var(--warn); }
.checks .st.fail { background: var(--fail); }
.checks .st.info { background: var(--ink-3); }
.checks strong { display: block; font-size: 15px; }
.checks p { font-size: 14px; color: var(--ink-2); }
.checks .val { font: 500 13px/1.3 var(--font-mono); color: var(--ink-2); text-align: right; white-space: nowrap; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr)); gap: 8px; }
.facts div { display: grid; gap: 2px; padding: 10px 12px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); }
.facts dt { font: 500 11px/1.2 var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-3); }
.facts dd { margin: 0; font: 600 18px/1.2 var(--font-display); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.tex-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr)); gap: 8px; }
.tex-list li { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 10px; align-items: center; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); font-size: 13px; }
.tex-list img, .tex-list canvas { width: 48px; height: 48px; border-radius: 6px; object-fit: cover; image-rendering: pixelated; }
.tex-list .mono { font-size: 11px; color: var(--ink-3); display: block; overflow-wrap: anywhere; }

/* ---------- listing kit ---------- */
.preset-list { display: grid; gap: 6px; max-height: 360px; overflow: auto; }
.preset-list label { display: grid; grid-template-columns: 18px minmax(0, 1fr) auto; gap: 8px; align-items: center; padding: 7px 8px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); cursor: pointer; font-size: 14px; }
.preset-list label.is-active { border-color: var(--accent); }
.preset-list input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.preset-list .mono { font-size: 11px; color: var(--ink-3); }
.preset-group { font: 500 11px/1 var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); padding: 8px 2px 2px; }
.lk-stage { position: relative; display: grid; place-items: center; background: var(--vp-bg); border-radius: 16px; padding: clamp(10px, 2vw, 18px); border: 1px solid var(--vp-line); }
.lk-stage canvas { max-width: 100%; max-height: 70vh; width: auto; height: auto; border-radius: 6px; box-shadow: 0 10px 30px -12px rgb(0 0 0 / 0.6); }
.lk-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font: 500 12px/1.3 var(--font-mono); color: var(--ink-3); }
.thumb-strip { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; }
.thumb-strip button { flex: none; padding: 0; border: 2px solid transparent; border-radius: 8px; background: var(--vp-bg); cursor: pointer; overflow: hidden; height: 74px; }
.thumb-strip button.is-on { border-color: var(--accent); }
.thumb-strip canvas { height: 70px; width: auto; display: block; }

/* ---------- guides ---------- */
.guide-list { display: grid; gap: 12px; max-width: 900px; }
.guide-item { display: grid; gap: 6px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); text-decoration: none; color: inherit; }
.guide-item:hover { border-color: var(--ink-3); }
.guide-item h2 { font-size: 20px; }
.guide-item p { color: var(--ink-2); }
.guide-item .mono { font-size: 12px; color: var(--ink-3); }
.article { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: clamp(24px, 4vw, 56px); align-items: start; }
.article-body { display: grid; gap: 16px; max-width: 72ch; color: var(--ink-2); font-size: 16.5px; }
.article-body > h2 { color: var(--ink); font-size: clamp(21px, 2.2vw, 26px); margin-top: 22px; scroll-margin-top: calc(var(--header-h) + 24px); }
.article-body > h3 { color: var(--ink); margin-top: 6px; }
.article-body a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.article-body ul, .article-body ol { margin: 0; padding-left: 22px; display: grid; gap: 6px; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.article-body th, .article-body td { text-align: left; padding: 9px 12px 9px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.article-body thead th { font: 500 11.5px/1.3 var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); }
.article-body td strong { color: var(--ink); }
.article-body .callout { padding: 14px 16px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 10px 10px 0; color: var(--ink-2); }
.article-body code { font: 400 0.9em/1 var(--font-mono); background: var(--surface-2); padding: 2px 5px; border-radius: 4px; color: var(--ink); }
.toc { position: sticky; top: calc(var(--header-h) + var(--safe-top) + 20px); display: grid; gap: 8px; font-size: 14px; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--ink); text-decoration: underline; }
.toc .tool-cta { margin-top: 12px; padding: 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); display: grid; gap: 8px; }
.sources { font-size: 13px; color: var(--ink-3); }
.sources ol { padding-left: 20px; display: grid; gap: 4px; }
.sources a { color: var(--ink-2); overflow-wrap: anywhere; }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .ws-side { position: static; max-height: none; overflow: visible; padding: 0; }
  .calc { grid-template-columns: minmax(0, 1fr); }
  .calc-form { position: static; }
  .article { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; order: -1; }
  .support-band { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .pro-ways, .pro-box { grid-template-columns: minmax(0, 1fr); }
  .icon-sheet { grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
  .tool-vp-stage { aspect-ratio: 1; }
  .checks li { grid-template-columns: 24px minmax(0, 1fr); }
  .checks .val { grid-column: 2; text-align: left; }
}

/* segmented control on the dark viewport bar */
.tool-vp-bar .seg { background: rgb(255 255 255 / 0.07); }
.tool-vp-bar .seg button { color: var(--vp-ink); font-size: 12px; padding: 6px 8px; }
.tool-vp-bar .seg button:hover { color: #fff; }
.tool-vp-bar .seg button[aria-pressed='true'] { background: var(--vp-line); color: #fff; box-shadow: none; }
.lk-stage.is-busy::after { content: 'Loading…'; position: absolute; right: 14px; bottom: 14px; font: 500 12px/1 var(--font-mono); color: #fff; background: rgb(0 0 0 / 0.5); padding: 7px 9px; border-radius: 7px; }
.lk-stage .vp-empty { border-radius: 16px; }
.report-target + .report-target { margin-top: 4px; }

/* texture memory rows */
.calc-form { min-width: 0; }
.tm-head, .tm-row { display: grid; grid-template-columns: minmax(0, 1.4fr) 64px 64px minmax(0, 1.5fr) 44px 28px; gap: 4px; align-items: center; }
.tm-head { color: var(--ink-3); }
.tm-rows { display: grid; gap: 6px; }
.tm-row .field { padding: 7px 6px; font-size: 13px; min-width: 0; }
.tm-row .icon-btn { min-width: 0; width: 28px; height: 28px; padding: 0; }
.calc .rows-editor .icon-btn { min-width: 0; width: 30px; height: 30px; padding: 0; }
.calc .ctl-label .btn { text-transform: none; letter-spacing: 0; font-family: var(--font-body); }
@media (max-width: 520px) {
  .tm-head { display: none; }
  .tm-row { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .tm-row .field:first-child { grid-column: 1 / -1; }
}
.calc-wide { grid-template-columns: minmax(300px, 500px) minmax(0, 1fr); }
@media (max-width: 1000px) { .calc-wide { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 1000px) {
  /* phones: 3D preview first, then the settings, then the results */
  .workspace .ws-main { display: contents; }
  .workspace .ws-main > :first-child { order: -1; }
  .workspace .ws-main > :not(:first-child) { order: 1; }
  .tool-vp-stage { aspect-ratio: 4 / 3; }
}