.header { min-height: 84px; }
.hero { padding-block: 42px 48px; min-height: 0; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 56px; }
.hero-copy { max-width: 560px; }
.hero h1 { font-size: clamp(34px, 3.4vw, 50px); letter-spacing: -.045em; line-height: 1.22; font-weight: 550; }
.hero h1 span { white-space: normal; }
.hero h1 span:last-child { color: var(--ink); }
.hero-description { margin-block: 20px 24px; font-size: 14px; line-height: 1.9; max-width: 510px; }
.hero-visual { max-width: none; width: 100%; justify-self: stretch; }
.hero-footnote { margin-top: 18px; max-width: 490px; font-size: 11px; }
.hero .figure-caption { font-size: 10px; letter-spacing: 0; padding-top: 10px; }
.hero .button { min-width: 154px; }
.workspace { padding-top: 28px; }
.workspace-indicator { display: none; }
.workspace-heading h2 { font-size: 30px; }
#workspace-save-status { margin: 10px 0; }
#workspace-save-status[data-warning="false"] { display: none; }
.flow-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-bottom: 1px solid var(--line); padding-inline: 24px; gap: 8px; }
.flow-steps button { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 19px 8px; min-height: 60px; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); font-size: 13px; }
.flow-steps button > span:first-child { display: grid; place-items: center; height: 25px; width: 25px; border-radius: 50%; background: var(--soft); font-size: 11px; flex-shrink: 0; }
.flow-steps button.is-current { color: var(--ink); border-bottom-color: var(--ink); font-weight: 600; }
.flow-steps button.is-current > span:first-child { background: var(--ink); color: white; }
.flow-steps button:not(.is-current) { border-bottom-color: transparent; color: var(--muted); font-weight: 400; }
.flow-steps button:disabled { opacity: .5; cursor: default; }
.workspace-tools { display: flex; justify-content: end; gap: 22px; padding: 4px 30px; }
.workspace-tools .tab-btn { font-size: 12px; padding: 12px 0; }
#flow-start { padding: 8px 0 24px; max-width: 640px; }
#flow-start h3, #flow-config-title, #flow-review-title { font-size: 24px; letter-spacing: -.025em; font-weight: 550; margin: 0 0 22px; }
#flow-start p { font-size: 14px; line-height: 1.8; color: var(--muted); }
.flow-text-button { border: 0; background: transparent; color: var(--ink); text-decoration: underline; text-underline-offset: 5px; padding: 12px 0; min-height: 44px; font-size: 13px; }
.flow-text-button:hover { color: var(--accent); }
.vault-connection[data-connected="true"] { padding-block: 16px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 8px 18px; }
.vault-connection[data-connected="true"] .vault-connection-top { justify-content: start; gap: 22px; }
.vault-connection[data-connected="true"] h3 { font-size: 14px; margin: 0; }
.vault-connection[data-connected="true"] .vault-summary { text-align: left; min-width: 0; }
.vault-connection[data-connected="true"] #vault-counts { font-size: 11px; margin: 4px 0 0; }
.vault-connection[data-connected="true"]:not(.is-expanded) #vault-help { display: none; }
.vault-connection[data-connected="true"]:not(.is-expanded) .vault-actions { display: none; }
.vault-actions, #vault-notice { grid-column: 1 / -1; }
.flow-size-hint { font-size: 12px; color: var(--muted); line-height: 1.8; margin: 12px 0 20px; }
#flow-roof-hint { color: #79512c; }
#sustainer-options { margin-top: 24px; max-width: 600px; }
.flow-details { background: transparent; margin-top: 16px; padding: 15px 18px; }
.flow-details > summary { min-height: 32px; display: list-item; font-size: 13px; line-height: 2.4; }
.flow-details select { max-width: 540px; }
#configuration-help h4 { margin: 20px 0 8px; font-size: 12px; font-weight: 550; }
#configuration-help p { font-size: 12px; line-height: 1.8; color: var(--muted); }
.flow-next { display: flex; align-items: center; gap: 20px; margin-top: 26px; }
.flow-next p { font-size: 12px; color: var(--muted); }
.flow-review-heading { display: flex; align-items: start; justify-content: space-between; gap: 18px; }
.flow-review-heading .selection-code { display: inline-block; margin: 0; }
.flow-result-summary { font-size: 13px; line-height: 1.9; color: var(--muted); margin: 22px 0 10px; }
.required-parts-group { margin: 20px 0 0; padding: 0; border: 0; border-radius: 0; background: transparent; }
.required-parts-group:first-child { margin-top: 0; }
.required-parts-group > summary { display: grid; grid-template-columns: minmax(0, 1fr) auto 14px; align-items: center; gap: 12px; min-height: 48px; margin: 0; padding: 12px 14px; background: var(--soft); border-block: 1px solid var(--line); list-style: none; }
.required-parts-group > summary::-webkit-details-marker { display: none; }
.required-parts-group > summary::after { content: '+'; color: var(--muted); font-size: 18px; font-weight: 400; text-align: center; }
.required-parts-group[open] > summary { margin-bottom: 0; }
.required-parts-group[open] > summary::after { content: '−'; }
.required-parts-group > summary:hover { color: var(--accent); }
.required-parts-group > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.required-parts-title { font-size: 14px; font-weight: 600; overflow-wrap: anywhere; }
.required-parts-count { color: var(--muted); font-size: 11px; font-weight: 400; white-space: nowrap; }
.required-parts-group .file-card:first-child { border-top: 0; }
#review-panel .plan-form { margin-top: 28px; background: var(--soft); padding: 22px; border: 1px solid var(--line); }
#review-panel .plan-form > p { font-size: 13px; line-height: 1.7; margin: 0 0 10px; }
#plan-customize { padding: 0; margin: 0 0 12px; border: 0; }
#plan-customize .plan-fields { margin-top: 12px; }
#hardware-details .hardware-card { margin-top: 12px; }
#optional-accessories { margin-top: 28px; }
#optional-accessories > summary { font-weight: 600; }
#optional-accessories .accessory-section { margin-top: 20px; }
#optional-accessories .accessory-group { margin-top: 10px; }
.file-info:not(:has(.part-role)) > .file-name { font-size: 12px; color: var(--ink); }
@media (max-width: 760px) {
  .hero { grid-template-columns: minmax(0, 1fr); padding-block: 28px 34px; gap: 22px; }
  .hero h1 { font-size: clamp(30px, 8vw, 40px); }
  .hero-visual { display: none; }
  .hero-description { font-size: 13px; margin-block: 16px; }
  .hero-footnote { font-size: 10px; }
  .workspace-heading h2 { font-size: 25px; }
  .flow-steps { padding-inline: 8px; gap: 2px; }
  .flow-steps button { flex-direction: column; gap: 7px; font-size: 11px; padding: 13px 2px; }
  .workspace-tools { padding-inline: 20px; gap: 20px; }
  #flow-config-title, #flow-review-title { font-size: 22px; }
  .flow-next { flex-direction: column; align-items: stretch; gap: 6px; }
  .flow-next p { margin: 4px 0; }
  .flow-review-heading { flex-wrap: wrap; gap: 8px; }
  .vault-connection[data-connected="true"] { grid-template-columns: minmax(0, 1fr); }
  .vault-connection[data-connected="true"] .vault-connection-top { align-items: start; gap: 6px; }
  #flow-folder-toggle { justify-self: start; }
  #review-panel .plan-form { padding: 16px; }
  .flow-details { padding-inline: 12px; }
}