.beam-planner { --planner-line: #a5ada7; background: var(--gm-paper-clear); color: var(--gm-ink); }
.beam-planner [hidden] { display: none !important; }
.beam-planner ::selection { background: var(--gm-signal); color: var(--gm-ink); }
.beam-planner :is(button,a,input,summary,[tabindex]):focus-visible { outline: 3px solid var(--gm-green); outline-offset: 3px; }
.beam-planner button { cursor: pointer; font: inherit; color: inherit; border: 1px solid var(--planner-line); background: var(--gm-paper-clear); min-height: 44px; padding: 10px 16px; border-radius: 0; transition: background-color .18s ease; }
.beam-planner button:hover { background: var(--gm-paper); }
.beam-planner button:disabled { opacity: .45; cursor: not-allowed; }
.beam-planner :is(button,a,label) > svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; flex: none; }
.beam-planner-heading { padding: 40px 40px 32px; display: flex; gap: 24px; align-items: flex-end; justify-content: space-between; border-bottom: 1px solid var(--planner-line); }
.beam-planner h1 { font-family: var(--gm-hero-display); font-size: 3.5rem; line-height: 1.05; font-weight: 600; margin: 0 0 12px; letter-spacing: -.02em; }
.beam-planner-heading p { margin: 0; font-size: 1.125rem; }
.beam-planner-heading a { display: inline-flex; align-items: center; gap: 14px; text-decoration: underline; text-underline-offset: 5px; min-height: 44px; font-size: .9rem; }
.beam-planner h2 { font-family: var(--gm-display); font-weight: 540; font-size: 1.5rem; letter-spacing: -.025em; line-height: 1.2; margin: 0 0 12px; }
.beam-planner-workspace { display: grid; grid-template-columns: 320px minmax(0,1fr); }
.beam-planner-options { padding: 28px 24px; border-right: 1px solid var(--planner-line); }
.beam-planner-options > p { margin: 0 0 24px; font-size: .9rem; color: var(--gm-ink-soft); }
.beam-planner-features { border: 0; padding: 0; margin: 0; min-width: 0; }
.beam-planner-option { display: flex; align-items: center; gap: 12px; padding: 18px 0; border-top: 1px solid var(--planner-line); cursor: pointer; }
.beam-planner-option:last-child { border-bottom: 1px solid var(--planner-line); }
.beam-planner-option input { width: 20px; height: 20px; min-width: 20px; margin: 0; accent-color: var(--gm-green); cursor: pointer; }
.beam-planner-option strong { font-size: 1rem; font-weight: 650; }
.beam-planner-option small { display: block; margin-top: 5px; font-size: .8rem; line-height: 1.4; color: var(--gm-ink-soft); }
.beam-planner-option > svg { margin-left: auto; }
.beam-planner-option:has(input:checked) > svg { transform: rotate(45deg); }
.beam-planner-option:has(input:checked) strong { color: var(--gm-green); }
.beam-planner-upload p { color: var(--gm-ink-soft); }
.beam-planner-upload input { max-width: 100%; width: 100%; margin: 8px 0 12px; font: inherit; }
.beam-planner-upload input::file-selector-button { padding: 10px; border: 1px solid var(--planner-line); background: var(--gm-paper); color: var(--gm-ink); font: inherit; cursor: pointer; }
.beam-planner .beam-planner-error { color: #943525; font-size: .85rem; margin: 10px 0 0; }
.beam-planner-drawing { min-width: 0; align-self: start; position: sticky; top: 77px; background: var(--gm-paper); }
.beam-planner-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 24px; background: var(--gm-paper-clear); border-bottom: 1px solid var(--planner-line); font-size: .9rem; }
.beam-planner-toolbar strong { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.beam-planner-zoom { display: flex; align-items: center; flex: none; }
.beam-planner-zoom button { border: 0; padding: 8px 10px; }
.beam-planner-zoom output { font-size: .8rem; width: 46px; text-align: center; font-variant-numeric: tabular-nums; }
.beam-planner-viewport { height: min(610px, calc(100svh - 260px)); min-height: 340px; overflow: auto; scrollbar-color: var(--gm-green) var(--gm-paper); }
.beam-planner-svg { width: 100%; height: 100%; display: block; margin: auto; user-select: none; }
.beam-planner-svg [data-placed] { cursor: grab; touch-action: none; }
.beam-planner-svg [data-placed]:active { cursor: grabbing; }
.beam-planner-svg [data-placed] .planner-selection { opacity: 0; }
.beam-planner-svg [data-placed][aria-pressed="true"] .planner-selection,.beam-planner-svg [data-placed]:focus-visible .planner-selection { opacity: 1; }
.beam-planner-position { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 24px; border-top: 1px solid var(--planner-line); background: var(--gm-paper-clear); font-size: .85rem; min-height: 69px; }
.beam-planner-position > div { display: flex; }
.beam-planner-position button { padding: 8px 10px; border: 0; }
.beam-planner-caption { margin: 0; padding: 12px 24px; border-top: 1px solid var(--planner-line); color: var(--gm-ink-soft); font-size: .75rem; line-height: 1.45; }
.beam-planner-summary { display: grid; grid-template-columns: 1fr 300px; gap: 72px; padding: 40px; border-top: 1px solid var(--planner-line); background: var(--gm-green-deep); color: var(--gm-paper-clear); }
.beam-planner-summary h2 { font-size: 1.75rem; }
.beam-planner-summary p { max-width: 65ch; }
.beam-planner-summary [data-summary-count] { margin: 32px 0 0; color: var(--gm-signal); font-family: var(--gm-display); font-size: clamp(1.55rem,2.2vw,2.25rem); font-weight: 600; line-height: 1.1; letter-spacing: -.025em; }
.beam-planner-summary .beam-planner-empty { max-width: 56ch; margin: 28px 0 0; padding-top: 22px; border-top: 1px solid #648675; color: var(--gm-paper); font-size: 1rem; line-height: 1.55; }
.beam-planner-summary ul { list-style: none; margin: 24px 0 0; padding: 0; }
.beam-planner-summary li { padding: 14px 0; border-top: 1px solid #648675; display: grid; grid-template-columns: 180px 1fr; gap: 24px; font-size: .9rem; }
.beam-planner-summary li span { color: var(--gm-paper); }
.beam-planner-next { display: flex; flex-direction: column; align-self: start; gap: 12px; }
.beam-planner .beam-planner-primary { display: flex; justify-content: center; align-items: center; min-height: 52px; padding: 14px 20px; border: 0; background: var(--gm-signal); color: var(--gm-ink); font-size: .9rem; font-weight: 650; text-align: center; }
.beam-planner .beam-planner-primary:hover { background: #b4e450; }
.beam-planner .beam-planner-reset { border-color: #648675; color: var(--gm-paper-clear); background: transparent; }
.beam-planner .beam-planner-reset:hover { background: #204435; }
.beam-planner-next > p { margin: 6px 0 0; font-size: .8rem; color: var(--gm-paper); }
.beam-planner-summary :is(button,a,summary):focus-visible { outline-color: var(--gm-signal); }
.beam-planner-notice { padding: 22px 40px; margin: 0; font-size: .8rem; color: var(--gm-ink-soft); border-top: 1px solid var(--planner-line); }
@media(max-width:1100px) { .beam-planner-workspace { grid-template-columns: 275px minmax(0,1fr); } .beam-planner-heading { align-items: flex-start; flex-direction: column; gap: 8px; } .beam-planner h1 { font-size: 3rem; } .beam-planner-summary { gap: 36px; grid-template-columns: 1fr 260px; } .beam-planner-summary li { grid-template-columns: 1fr; gap: 6px; } }
@media(max-width:980px) { .beam-planner-drawing { top: 71px; } .beam-planner-position,.beam-planner-toolbar { padding-inline: 16px; } .beam-planner-toolbar { flex-wrap: wrap; gap: 4px; } }
@media(max-width:700px) {
 .beam-planner-heading { padding: 28px 24px 20px; } .beam-planner h1 { font-size: 2.5rem; } .beam-planner-heading p { font-size: 1rem; }
 .beam-planner-workspace { display: flex; flex-direction: column; }
 .beam-planner-drawing { order: -1; width: 100%; z-index: 3; position: sticky; top: 71px; border-bottom: 1px solid var(--planner-line); }
 .beam-planner-viewport { height: 270px; min-height: 0; } .beam-planner-toolbar { padding-block: 5px; flex-wrap: nowrap; font-size: .8rem; } .beam-planner-zoom button { padding: 7px; }
 .beam-planner-position { padding: 6px 12px; min-height: 44px; gap: 2px; font-size: .75rem; } .beam-planner-position > span { flex: 1; } .beam-planner-position button { padding: 5px; } .beam-planner-position button[data-position-reset] { display: none; }
 .beam-planner-caption { padding: 7px 12px; font-size: .65rem; } .beam-planner-options { border-right: 0; padding: 28px 24px; }
 .beam-planner-summary { grid-template-columns: 1fr; padding: 32px 24px; gap: 24px; } .beam-planner-notice { padding: 20px 24px; }
}
@media(max-height:700px) and (max-width:700px) { .beam-planner-drawing { position: static; } }
@media(prefers-reduced-motion:reduce) { .beam-planner button { transition: none; } }
/* Source-led benefit notes extend the existing ruled planner rows. */
.beam-planner-options > p a { text-decoration: underline; text-underline-offset: 3px; }
.beam-planner-evidence-intro { font-size: .9rem; color: var(--gm-paper); }
.beam-planner-summary li { padding-block: 22px; }
.beam-planner-summary li > strong { font-weight: 650; }
.beam-planner-benefit p { margin: 0 0 12px; }
.beam-planner-benefit .beam-planner-benefit-title { color: var(--gm-signal); font-size: 1.125rem; font-weight: 650; line-height: 1.35; }
.beam-planner-benefit summary { cursor: pointer; padding: 8px 0; font-weight: 600; }
.beam-planner-benefit details p { margin: 12px 0; color: var(--gm-paper); }
.beam-planner .beam-planner-benefit a { text-decoration: underline; text-underline-offset: 4px; overflow-wrap: anywhere; }
.beam-planner-site-check { margin: 14px 0 0; font-size: .8rem; }
.beam-planner-research { padding: 44px 40px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; border-top: 1px solid var(--planner-line); scroll-margin-top: 95px; }
.beam-planner-research p { max-width: 65ch; font-size: .95rem; color: var(--gm-ink-soft); }
.beam-planner-research .beam-planner-research-date { font-size: .8rem; }
.beam-planner-research details { border-top: 1px solid var(--planner-line); }
.beam-planner-research summary { padding: 24px 0; cursor: pointer; font-weight: 650; font-size: 1rem; }
.beam-planner-research-notes summary { position: relative; min-height: 92px; padding-right: 92px; }
.beam-planner-research-notes summary > span:first-child { font-family: var(--gm-display); font-size: 1.125rem; font-weight: 540; line-height: 1.2; letter-spacing: -.02em; }
.beam-planner-research-icon-frame { position: absolute; top: 50%; right: 0; display: grid; place-items: center; width: 64px; height: 64px; border: 0; background: transparent; translate: 0 -50%; }
.beam-planner-research-icon { display: block; width: 44px; height: 36px; object-fit: contain; }
.beam-planner-research-notes details[open] .beam-planner-research-icon-frame { background: var(--gm-signal); }
.beam-planner-research h3 { font-family: var(--gm-display); font-size: 1.25rem; font-weight: 540; line-height: 1.3; margin: 0 0 16px; }
.beam-planner-research ul { padding: 0 0 8px; list-style: none; font-size: .85rem; }
.beam-planner-research li { margin-bottom: 14px; }
.beam-planner .beam-planner-research a { text-decoration: underline; text-underline-offset: 4px; overflow-wrap: anywhere; }
.beam-planner-source-date { display: block; margin-top: 6px; font-size: .75rem; color: var(--gm-ink-soft); }
#planner-summary-title { scroll-margin-top: 95px; }
@media (min-width: 981px) { .beam-planner-research > div:first-child { position: sticky; top: 96px; align-self: start; } }
@media(max-width:980px) { .beam-planner-research { grid-template-columns: 1fr; gap: 24px; } }
@media(max-width:700px) { .beam-planner-research { padding: 32px 24px; } .beam-planner-benefit .beam-planner-benefit-title { font-size: 1rem; } .beam-planner-research-notes summary { min-height: 80px; padding-right: 72px; } .beam-planner-research-icon-frame { width: 56px; height: 56px; } .beam-planner-research-icon { width: 38px; height: 32px; } }
/* Published comparisons and a visible, illustrated floor-plan preparation guide. */
.beam-planner-heading-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.beam-planner .beam-planner-heading-links a {
  justify-content: center;
  min-height: 52px;
  padding: 13px 22px;
  border: 1px solid var(--gm-ink);
  background: transparent;
  color: var(--gm-ink);
  font-size: .9rem;
  font-weight: 650;
  line-height: 1.35;
  text-decoration: none;
}
.beam-planner .beam-planner-heading-links a:first-child {
  border-color: var(--gm-signal);
  background: var(--gm-signal);
}
.beam-planner .beam-planner-heading-links a:hover {
  background: var(--gm-paper);
}
.beam-planner .beam-planner-heading-links a:first-child:hover {
  border-color: var(--gm-signal-deep);
  background: var(--gm-signal-deep);
}
.beam-planner-figures { padding: clamp(36px,4vw,64px) 40px 40px; border-bottom: 1px solid var(--planner-line); background: var(--gm-green-deep); color: var(--gm-paper-clear); }
.beam-planner-figures-intro { display: grid; grid-template-columns: minmax(240px,.7fr) minmax(0,1.3fr); align-items: end; gap: clamp(32px,5vw,80px); margin-bottom: 0; padding-bottom: 30px; border-bottom: 1px solid #648675; }
.beam-planner-figures-intro h2 { max-width: 12ch; margin: 0; font-family: var(--gm-display); font-size: clamp(1.75rem,2.4vw,2.5rem); font-weight: 600; line-height: 1.02; letter-spacing: -.025em; }
.beam-planner-figures-intro > p { margin: 0; max-width: 65ch; font-size: .95rem; line-height: 1.55; color: var(--gm-paper); }
.beam-planner-figure-row { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 0; }
.beam-planner-figure-row article { padding: 30px clamp(24px,2.5vw,40px) 10px; }
.beam-planner-figure-row article:first-child { padding-left: 0; }
.beam-planner-figure-row article:last-child { padding-right: 0; }
.beam-planner-figure-row article + article { border-left: 1px solid #648675; }
.beam-planner .beam-planner-figure { font: 600 clamp(3.75rem,5vw,5.5rem)/.92 var(--gm-hero-display); letter-spacing: -.025em; color: var(--gm-signal); margin: 0 0 18px; font-variant-numeric: tabular-nums; }
.beam-planner-figure-row h3 { font: 600 1.125rem/1.3 var(--gm-body); margin: 0 0 14px; color: var(--gm-paper-clear); }
.beam-planner-figure-row article > p:not(.beam-planner-figure) { max-width: 40ch; font-size: .85rem; line-height: 1.55; color: var(--gm-paper); margin: 0 0 18px; }
.beam-planner .beam-planner-figure-row a { color: var(--gm-signal); }
.beam-planner-figures :is(a,button):focus-visible { outline-color: var(--gm-signal); }
.beam-planner .beam-planner-figure-row a,.beam-planner .beam-planner-upload a,.beam-planner .beam-planner-upload-link a { text-decoration: underline; text-underline-offset: 4px; font-size: .85rem; }
.beam-planner-options .beam-planner-upload-link { margin-top: 24px; }
.beam-planner-benefit-figure { display: block; font: 600 2.5rem/1.1 var(--gm-hero-display); margin-bottom: 5px; font-variant-numeric: tabular-nums; }
.beam-planner-summary .beam-planner-benefit-title span { color: var(--gm-signal); }
.beam-planner-upload { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); align-items: start; gap: 56px; margin: 0; padding: 44px 40px; border-top: 1px solid var(--planner-line); font-size: .95rem; scroll-margin-top: 95px; }
.beam-planner-upload > *,.beam-planner-upload-example,.beam-planner-upload-image { min-width: 0; max-width: 100%; }
.beam-planner-upload-example { margin: 0; }
.beam-planner-upload-image { display: flex; align-items: center; justify-content: center; height: calc(115svh - 172px); overflow: hidden; background: var(--gm-paper-clear); }
.beam-planner .beam-planner-upload-example img { display: block; flex: none; width: auto; max-width: none; height: 100%; transform: scale(1.1); transform-origin: center; }
.beam-planner-upload-example figcaption { font-size: .8rem; line-height: 1.6; color: var(--gm-ink-soft); margin-top: 12px; }
.beam-planner-upload-steps { margin: 24px 0; padding-left: 22px; }
.beam-planner-upload-steps li { padding-left: 6px; margin-bottom: 14px; }
.beam-planner-upload-steps strong { display: block; }
.beam-planner-upload label { display: block; font-weight: 650; }
.beam-planner-upload #planner-file-help,.beam-planner-upload #planner-file-privacy { font-size: .8rem; margin: 8px 0; }
.beam-planner-upload-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 16px; }
#planner-canvas,.beam-planner-research-notes > details { scroll-margin-top: 95px; }
@media(max-width:980px) {
 .beam-planner-figures-intro { grid-template-columns: 1fr; gap: 16px; }
 .beam-planner-upload { grid-template-columns: 1fr; gap: 28px; }
 .beam-planner-upload-example { justify-self: center; width: 100%; max-width: 720px; }
 .beam-planner-upload-image { height: clamp(380px,58svh,520px); }
 .beam-planner .beam-planner-upload-example img { width:100%;max-width:100%;height:100%;transform:none;object-fit:contain; }
}
@media(max-width:700px) {
 .beam-planner-figures { padding: 32px 24px; } .beam-planner-figure-row { grid-template-columns: 1fr; }
 .beam-planner-figures-intro { padding-bottom: 24px; }
 .beam-planner-figures-intro h2 { max-width: none; }
 .beam-planner-figure-row article { display: grid; grid-template-columns: 120px minmax(0,1fr); column-gap: 18px; padding: 26px 0; }
 .beam-planner-figure-row article + article { border-left: 0; border-top: 1px solid #648675; }
 .beam-planner .beam-planner-figure { font-size: 2.6rem; grid-row: 1 / 4; white-space: nowrap; }
 .beam-planner-figure-row article > :not(.beam-planner-figure) { grid-column: 2; }
 .beam-planner-upload { grid-template-columns: 1fr; padding: 32px 24px; gap: 28px; }
 .beam-planner-upload-example { width: 100%; max-width: 620px; }
 .beam-planner-upload-image { height: clamp(320px,50svh,420px); }
 .beam-planner-heading-links { gap: 10px; }
 .beam-planner .beam-planner-heading-links a { flex: 1 1 210px; }
}

@media(max-width:360px) { .beam-planner-figure-row article { display: block; } }

.beam-planner-upload-example img { aspect-ratio: auto; object-fit: contain; }

@media (min-width: 981px) {
  .beam-planner-upload-example {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .beam-planner-next {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 701px) and (max-width: 980px) {
  .beam-planner-next {
    top: 90px;
  }
}

/* Keep page and top-level section titles on the shared non-home scale. */
.beam-planner .beam-planner-heading h1 {
  font-size: var(--gm-page-hero-size);
}
.beam-planner .beam-planner-upload > div > h2,
.beam-planner .beam-planner-summary > div > h2,
.beam-planner .beam-planner-research > div > h2 {
  font-size: var(--gm-section-title-size);
}