/* V5 technical workbench; all rules stay within the calculator page. */
.page-calculator .calculator-section { padding: 20px 0 24px; background: #f7f9fb; }
.page-calculator .calculator-container { width: min(1240px, calc(100% - 64px)); }
.page-calculator #calc-weight button { display: inline-flex; width: auto; margin-inline: 0; }
.page-calculator .calc-v5-heading {
  position: relative; display: block; margin: 0 0 24px; text-align: left;
}
.page-calculator .calc-v5-heading-copy { padding: 18px 0 8px; min-width: 0; }
.page-calculator .calc-v5-heading .tag { font-size: 10px; letter-spacing: .16em; }
.page-calculator .calc-v5-heading h1 {
  margin: 16px 0 12px; font-size: clamp(34px, 3.65vw, 52px); line-height: 1.08;
  font-weight: 750; letter-spacing: -.048em; color: #0c171f;
}
.page-calculator .calc-v5-heading .small { margin: 0; max-width: 620px; font-size: 16px; line-height: 1.6; color: #5b6975; }
.page-calculator .calculator-card-top { margin-bottom: 20px; }
.page-calculator .calculator-tabs { gap: 12px; border: 0; border-radius: 0; background: transparent; overflow: visible; }
.page-calculator .calculator-tabs button,
.page-calculator .calculator-tabs button:hover {
  display: flex; align-items: center; justify-content: flex-start; gap: 18px;
  position: relative; min-width: 0; min-height: 86px; padding: 18px 22px;
  border: 1px solid #d8dfe7; border-radius: 6px; background: #fff; color: #111e29; text-align: left;
  box-shadow: none; transform: none; transition: none;
}
.page-calculator .calculator-tabs button + button { border-left: 1px solid #d8dfe7; }
.page-calculator .calculator-tabs button.active,
.page-calculator .calculator-tabs button.active:hover { border-color: #172631; color: #fff; background: #14232e; }
.page-calculator .calculator-tabs button.active::before { position: absolute; content: ""; left: -1px; top: -1px; bottom: -1px; width: 5px; border-radius: 6px 0 0 6px; background: #e60024; }
.page-calculator .calculator-tabs button .calc-tab-icon { width: 36px; height: 36px; flex: 0 0 36px; color: inherit; }
.page-calculator .calc-tab-icon svg { width: 100%; height: 100%; }
.page-calculator .calculator-tabs button .calc-tab-copy { display: block; width: auto; height: auto; min-width: 0; flex: 1; color: inherit; font-size: 14px; line-height: 1.5; }
.page-calculator .calculator-tabs button strong { display: block; margin: 0; font-size: 15px; font-weight: 650; line-height: 1.3; }
.page-calculator .calculator-tabs button small { display: block; margin: 5px 0 0; font-size: 11px; font-weight: 400; line-height: 1.4; color: #647280; }
.page-calculator .calculator-tabs button.active small { color: #d4dee5; }
.page-calculator .calculator-tabs button.active .calc-tab-icon,
.page-calculator .calculator-tabs button.active .calc-tab-copy,
.page-calculator .calculator-tabs button.active .calc-tab-arrow { color: #fff; background: transparent; }
.page-calculator .calculator-tabs button .calc-tab-copy strong,
.page-calculator .calculator-tabs button .calc-tab-copy small { text-align: left; }
.page-calculator .calculator-tabs button .calc-tab-arrow { width: 16px; height: 16px; flex: 0 0 16px; color: inherit; }
.page-calculator .calc-tab-arrow svg { display: block; width: 16px; height: 16px; }
.page-calculator .calc-panel { padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.page-calculator .calc-workspace,
.page-calculator .thread-workspace,
.page-calculator #calc-weight .calc-workspace { grid-template-columns: minmax(0, 1.58fr) minmax(0, 1fr); gap: 16px; }
.page-calculator .calc-input-panel,
.page-calculator .thread-input-panel,
.page-calculator #calc-weight .calc-input-panel { padding: 26px 28px; border: 1px solid #dce3eb; border-radius: 6px; background: #fff; }
.page-calculator .calc-panel-heading { margin-bottom: 26px; }
.page-calculator .calc-panel-heading h2,
.page-calculator .calc-panel-heading h3 { margin: 0 0 8px; font-size: clamp(23px, 2.15vw, 29px); line-height: 1.22; font-weight: 700; letter-spacing: -.035em; color: #111e29; }
.page-calculator .calc-panel-heading .small { margin: 0; font-size: 13px; line-height: 1.6; color: #70808d; }
.page-calculator .thread-input-grid,
.page-calculator #calc-weight .form-grid { gap: 22px 24px; }
.page-calculator .field label,
.page-calculator #calc-weight .field label,
.page-calculator #calc-weight .weight-top-tabs > span { margin-bottom: 9px; font-size: 12px; font-weight: 600; }
.page-calculator .calc-field-symbol { margin-left: 7px; font-size: 11px; color: #6a7987; }
.page-calculator input:not([type="hidden"]),
.page-calculator select,
.page-calculator #calc-weight input:not([type="hidden"]),
.page-calculator #calc-weight select { height: 46px; min-height: 46px; padding: 11px 14px; font-size: 16px; border-color: #d1dae4; }
.page-calculator select:focus-visible { outline: 2px solid #e60024; outline-offset: 0; }
.page-calculator .calc-input-control input:not([type="hidden"]),
.page-calculator .calc-input-control input:not([type="hidden"]):hover,
.page-calculator .calc-input-control input:not([type="hidden"]):focus,
.page-calculator .calc-input-control input:not([type="hidden"]):focus-visible,
.page-calculator #calc-weight .calc-input-control input:not([type="hidden"]),
.page-calculator #calc-weight .calc-input-control input:not([type="hidden"]):hover,
.page-calculator #calc-weight .calc-input-control input:not([type="hidden"]):focus,
.page-calculator #calc-weight .calc-input-control input:not([type="hidden"]):focus-visible {
  border-color: #d1dae4;
  outline: none;
  box-shadow: none;
  background: #fff;
  color: #111e29;
  caret-color: #111e29;
  transition: none;
}
.page-calculator input[type="number"],
.page-calculator #calc-weight input[type="number"] { appearance: textfield; -moz-appearance: textfield; }
.page-calculator input[type="number"]::-webkit-inner-spin-button,
.page-calculator input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.page-calculator .calc-input-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-auto-columns: max-content;
  column-gap: 8px;
  align-items: stretch;
  width: 100%;
  min-width: 0;
}
.page-calculator .calc-input-control input:not([type="hidden"]),
.page-calculator #calc-weight .calc-input-control input:not([type="hidden"]) {
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  margin: 0;
  border-radius: 4px;
}
.page-calculator .calc-input-unit {
  grid-column: 2;
  grid-row: 1;
  min-width: 58px;
  height: 46px;
  font-size: 12px;
  border: 1px solid #d1dae4;
  border-radius: 4px;
  background: #f5f7fa;
}
.page-calculator .calc-action-row { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 26px; }
.page-calculator .calc-button,
.page-calculator #calc-weight .calc-button { width: 46%; min-width: 180px; min-height: 46px; margin: 0; border: 1px solid #e60024; border-radius: 4px; padding: 12px 22px; background: #e60024; color: #fff; box-shadow: none; font-size: 14px; font-weight: 650; }
.page-calculator .calc-button:hover,
.page-calculator #calc-weight .calc-button:hover { background: #c90020; border-color: #c90020; }
.page-calculator .calc-reset,
.page-calculator .calc-copy { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 42px; padding: 8px 12px; border: 1px solid transparent; border-radius: 4px; font: inherit; font-size: 12px; font-weight: 500; cursor: pointer; background: transparent; color: #233543; box-shadow: none; }
.page-calculator .calc-reset svg,
.page-calculator .calc-copy svg { width: 19px; height: 19px; flex: 0 0 19px; }
.page-calculator .calc-reset:hover { background: #f0f3f6; }
.page-calculator button:focus-visible { outline: 2px solid #e60024; outline-offset: 3px; }
.page-calculator .calc-result-panel,
.page-calculator .thread-result-panel { display: flex; flex-direction: column; padding: 28px; border: 1px solid #14232e; border-radius: 6px; background: #14232e; }
.page-calculator .calc-subtitle { display: flex; align-items: center; gap: 14px; margin: 0 0 24px; padding: 0; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .13em; line-height: 1.5; }
.page-calculator .calc-subtitle::before { content: ""; width: 26px; height: 3px; flex: 0 0 26px; background: #e60024; }
.page-calculator .calc-subtitle::after { display: none; }
.page-calculator .calc-results.side-results { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; }
.page-calculator .calc-results.side-results > div { display: block; min-width: 0; padding: 5px 0 18px; }
.page-calculator .calc-results.side-results > div + div { padding: 20px 0 8px; border-top: 1px solid #46545f; border-left: 0; }
.page-calculator .calc-results span { display: block; margin-bottom: 4px; color: #e1e8ed; font-size: 14px; }
.page-calculator .calc-results.side-results strong,
.page-calculator .weight-summary-panel .calc-results div + div strong { display: block; max-width: 100%; margin: 0; color: #fff; font-size: clamp(40px, 4.4vw, 64px); line-height: 1.18; font-weight: 700; letter-spacing: -.025em; font-variant-numeric: tabular-nums; white-space: normal; overflow-wrap: anywhere; }
.page-calculator .calc-results.side-results small { display: block; margin: 4px 0 0; color: #c6d4dd; font-size: 15px; white-space: normal; }
.page-calculator .thread-results { display: grid; grid-template-columns: minmax(0, 1fr); }
.page-calculator .thread-results > div { grid-template-columns: minmax(0, 1fr) auto; align-items: baseline; gap: 4px 10px; padding: 12px 0; }
.page-calculator .thread-results strong { min-width: 0; max-width: 100%; font-size: 25px; font-weight: 650; font-variant-numeric: tabular-nums; white-space: normal; overflow-wrap: anywhere; }
.page-calculator .thread-results span { grid-column: 1 / -1; margin: 0; font-size: 12px; overflow-wrap: anywhere; }
.page-calculator .thread-results small { white-space: nowrap; }
.page-calculator .thread-result-panel .thread-note { color: #c3d0d9; }
.page-calculator .calc-copy { align-self: flex-start; margin-top: 18px; border-color: #a0b0bb; color: #fff; padding: 9px 16px; }
.page-calculator .calc-copy:hover { background: #273b49; border-color: #fff; }
.page-calculator .calc-copy-status { min-height: 0; margin: 0; color: #dce6ec; font-size: 12px; line-height: 1.5; }
.page-calculator .calc-copy-status:not(:empty) { margin-top: 12px; }
.page-calculator .calc-copy-status.is-error { color: #ffd4db; }
.page-calculator .calc-helper { margin-top: 14px; font-size: 11px; color: #788795; }
.page-calculator .calc-result-hint { margin-top: 14px; font-size: 11px; }
.page-calculator .calc-result-hint[hidden] { display: none; }
.page-calculator .calc-formula { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1.05fr) minmax(0, 1fr); align-items: center; gap: 24px; padding: 20px 28px; margin-top: 16px; border: 1px solid #dce3eb; border-radius: 6px; background: #fafbfd; }
.page-calculator .calc-formula-heading h3 { display: flex; align-items: center; gap: 9px; margin: 0 0 7px; font-size: 13px; font-weight: 650; }
.page-calculator .calc-formula-heading h3::before { content: ""; display: block; width: 24px; height: 3px; flex: 0 0 24px; background: #e60024; }
.page-calculator .calc-formula-heading p { margin: 0; font-size: 11px; line-height: 1.6; color: #607080; }
.page-calculator .calc-formula-equation { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; font-family: Georgia, serif; font-size: clamp(18px, 1.65vw, 24px); color: #14232e; white-space: nowrap; }
.page-calculator .calc-formula-equation + .calc-formula-equation { border-left: 1px solid #d1dae4; padding-left: 20px; }
.page-calculator .calc-fraction { display: inline-flex; flex-direction: column; align-items: center; font-size: .85em; text-align: center; }
.page-calculator .calc-fraction > span:first-child { padding: 0 6px 3px; border-bottom: 1px solid currentColor; }
.page-calculator .calc-fraction > span:last-child { padding: 3px 6px 0; }
.page-calculator .calc-symbols { margin: 0; padding-left: 24px; border-left: 1px solid #d1dae4; font-size: 10px; line-height: 1.55; }
.page-calculator .calc-symbols > div { display: flex; gap: 9px; }
.page-calculator .calc-symbols dt { width: 20px; flex: 0 0 20px; font-weight: 650; }
.page-calculator .calc-symbols dd { margin: 0; color: #506171; }
.page-calculator #calc-weight .calc-workspace,
.page-calculator #calc-rpm .calc-workspace,
.page-calculator #calc-thread .thread-workspace { grid-template-columns: minmax(0, 1fr) 252px 264px; align-items: stretch; }
.page-calculator #calc-weight .calc-input-panel { align-self: stretch; padding: 24px; }
.page-calculator #calc-rpm .calc-input-panel { align-self: stretch; padding: 24px; }
.page-calculator #calc-rpm .thread-input-grid { column-gap: 16px; }
.page-calculator #calc-rpm .rpm-result-panel { min-width: 0; align-self: stretch; padding: 24px 22px; }
.page-calculator #calc-rpm .rpm-result-panel .side-results strong { font-size: 36px; }
.page-calculator #calc-thread .thread-input-panel { min-width: 0; align-self: stretch; padding: 24px; }
.page-calculator #calc-thread .thread-result-panel { align-self: stretch; padding: 24px 22px; }
.page-calculator #calc-thread .thread-type-tabs,
.page-calculator #calc-thread .whitworth-series-tabs { gap: 5px; }
.page-calculator #calc-thread .thread-type-tabs button,
.page-calculator #calc-thread .whitworth-series-tabs button { min-width: 0; padding-inline: 8px; overflow-wrap: anywhere; }
.page-calculator #calc-thread .thread-standard-list select { width: 100%; min-width: 0; max-width: 100%; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-panel-heading h2 { font-size: 25px; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-panel-heading .small { font-size: 12px; }
.page-calculator #calc-weight .form-grid { gap: 20px 16px; }
.page-calculator #calc-weight .shape-tabs { gap: 5px; }
.page-calculator #calc-weight .shape-tabs button { padding: 10px 5px; gap: 6px; font-size: 10px; }
.page-calculator .weight-results-column { min-width: 0; min-height: 0; align-self: stretch; display: flex; }
.page-calculator #calc-weight .weight-summary-panel { flex: 1 1 auto; height: 100%; padding: 24px 22px; }
.page-calculator #calc-weight .weight-summary-panel .thread-note { font-size: 10px; line-height: 1.65; }
.page-calculator #calc-weight .weight-summary-panel .material-summary { font-size: 11px; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history {
  display: flex; flex-direction: column; grid-column: auto; align-self: stretch; contain: size;
  width: 100%; min-width: 0; min-height: 0; margin: 0; padding: 20px 16px 16px;
  border: 1px solid #dce3eb; border-radius: 6px; background: #fff;
}
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history .weight-history-head { flex: 0 0 auto; align-items: center; margin: 0; gap: 8px; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history .weight-history-head h4 { min-width: 0; margin: 0; font-size: 13px; line-height: 1.35; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history .weight-history-head button { border: 0; padding: 5px 0 5px 5px; border-radius: 0; color: #a14b54; background: transparent; font-size: 10px; }
.page-calculator .history-count { display: inline-block; margin-left: 5px; color: #73818c; font-size: 10px; font-weight: 500; white-space: nowrap; }
.page-calculator .history-limit-note { flex: 0 0 auto; margin: 10px 0 14px; color: #7a8791; font-size: 10px; line-height: 1.5; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history ul {
  display: grid; grid-template-columns: minmax(0, 1fr); grid-auto-rows: max-content; align-content: start;
  flex: 1 1 0; min-height: 0; height: auto; max-height: none; gap: 8px; margin: 0; padding: 0 5px 0 0;
  overflow-y: auto; overscroll-behavior-y: contain; scrollbar-width: thin;
}
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history ul:empty { display: block; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history ul:focus-visible { outline: 2px solid #e60024; outline-offset: 4px; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history li { min-width: 0; padding: 12px 11px; border: 1px solid #e5eaf0; border-radius: 4px; background: #f8fafb; overflow-wrap: anywhere; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history .history-row-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 8px; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history li strong { min-width: 0; max-width: 100%; margin: 0; color: #263744; font-size: 11px; font-weight: 600; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history li b { min-width: 0; max-width: 100%; color: #111e29; font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; white-space: normal; overflow-wrap: anywhere; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history li span { display: block; margin-top: 7px; color: #78858f; font-size: 10px; line-height: 1.55; overflow-wrap: anywhere; }
.page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history .weight-history-empty { flex: 0 0 auto; margin-top: 24px; font-size: 12px; }
.page-calculator #calc-weight .weight-results-column .side-results { grid-template-columns: minmax(0, 1fr); gap: 0; }
.page-calculator #calc-weight .weight-results-column .side-results > div { padding: 0 0 8px; }
.page-calculator #calc-weight .weight-results-column .side-results > div + div { padding: 18px 0 8px; border-top: 1px solid #46545f; border-left: 0; }
.page-calculator #calc-weight .weight-results-column .side-results strong { font-size: 36px; }
.page-calculator #calc-weight .weight-results-column .side-results small { display: block; margin: 4px 0 0; font-size: 12px; }

@media (max-width: 1199px) {
  .page-calculator #calc-weight .calc-workspace,
  .page-calculator #calc-rpm .calc-workspace,
  .page-calculator #calc-thread .thread-workspace { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
  .page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history { grid-column: 1 / -1; height: 260px; }
  .page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1100px) {
  .page-calculator .calculator-tabs button { gap: 12px; padding: 16px; }
  .page-calculator .calculator-tabs button .calc-tab-icon { width: 28px; height: 28px; flex-basis: 28px; }
  .page-calculator .calculator-tabs button .calc-tab-arrow { display: none; }
  .page-calculator .calc-v5-heading h1 { font-size: 42px; }
  .page-calculator .calc-formula { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
  .page-calculator .calc-symbols { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding: 12px 0 0; border-left: 0; border-top: 1px solid #d1dae4; }
  .page-calculator .calc-symbols dt { width: auto; flex-basis: auto; }
}
@media (min-width: 901px) and (max-width: 1100px) {
  .page-calculator .thread-input-grid,
  .page-calculator #calc-weight .form-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .page-calculator .calculator-container { width: calc(100% - 40px); }
  .page-calculator .calc-v5-heading h1 { font-size: 36px; }
  .page-calculator .calc-v5-heading .small { font-size: 14px; }
  .page-calculator .calculator-tabs button { padding: 16px 12px; gap: 10px; min-height: 78px; }
  .page-calculator .calculator-tabs button strong { font-size: 13px; }
  .page-calculator .calculator-tabs button small { font-size: 10px; }
  .page-calculator .calc-workspace,
  .page-calculator .thread-workspace,
  .page-calculator #calc-weight .calc-workspace,
  .page-calculator #calc-rpm .calc-workspace,
  .page-calculator #calc-thread .thread-workspace { grid-template-columns: minmax(0, 1fr); }
  .page-calculator .calc-results.side-results { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
  .page-calculator .calc-results.side-results > div + div { padding: 5px 0 18px 24px; border-top: 0; border-left: 1px solid #46545f; }
  .page-calculator .calc-results.side-results strong,
  .page-calculator .weight-summary-panel .calc-results div + div strong { font-size: 48px; }
  .page-calculator #calc-weight .weight-results-column .side-results { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
  .page-calculator #calc-weight .weight-results-column .side-results > div + div { padding: 0 0 8px 24px; border-top: 0; border-left: 1px solid #46545f; }
  .page-calculator #calc-weight .weight-summary-panel { height: auto; }
}
@media (max-width: 620px) {
  .page-calculator .calculator-section { padding: 12px 0 20px; }
  .page-calculator .calculator-container { width: calc(100% - 24px); }
  .page-calculator .calc-v5-heading { margin-bottom: 20px; }
  .page-calculator .calc-v5-heading-copy { padding: 20px 8px 0; }
  .page-calculator .calc-v5-heading h1 { font-size: clamp(30px, 7.9vw, 38px); margin: 14px 0 10px; }
  .page-calculator .calc-v5-heading .tag { font-size: 9px; letter-spacing: .1em; }
  .page-calculator .calc-v5-heading .small { font-size: 13px; }
  .page-calculator .calculator-select-wrap { display: none; }
  .page-calculator .calculator-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .page-calculator .calculator-tabs button { flex-direction: column; justify-content: center; gap: 8px; padding: 12px 5px; min-height: 92px; text-align: center; }
  .page-calculator .calculator-tabs button .calc-tab-icon { width: 24px; height: 24px; flex: 0 0 24px; }
  .page-calculator .calculator-tabs button .calc-tab-copy { flex: 0 1 auto; }
  .page-calculator .calculator-tabs button strong { font-size: 11px; line-height: 1.4; }
  .page-calculator .calculator-tabs button .calc-tab-copy strong { text-align: center; }
  .page-calculator .calculator-tabs button small { display: none; }
  .page-calculator .calculator-card-top { margin-bottom: 12px; }
  .page-calculator .calc-input-panel,
  .page-calculator .thread-input-panel,
  .page-calculator #calc-weight .calc-input-panel,
  .page-calculator #calc-rpm .calc-input-panel,
  .page-calculator #calc-thread .thread-input-panel { padding: 22px 18px; }
  .page-calculator :is(#calc-weight, #calc-rpm, #calc-thread) .calc-history ul { grid-template-columns: minmax(0, 1fr); }
  .page-calculator .calc-panel-heading h2,
  .page-calculator .calc-panel-heading h3 { font-size: 24px; }
  .page-calculator .calc-panel-heading .small { font-size: 12px; }
  .page-calculator .calc-panel-heading { margin-bottom: 22px; }
  .page-calculator .thread-input-grid,
  .page-calculator #calc-weight .form-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .page-calculator .calc-action-row { flex-wrap: nowrap; gap: 12px; }
  .page-calculator .calc-button,
  .page-calculator #calc-weight .calc-button { width: auto; flex: 1; min-width: 0; padding: 12px; }
  .page-calculator .calc-reset { padding: 8px; gap: 6px; }
  .page-calculator .calc-result-panel,
  .page-calculator .thread-result-panel,
  .page-calculator #calc-rpm .rpm-result-panel,
  .page-calculator #calc-thread .thread-result-panel { padding: 24px 20px; }
  .page-calculator .calc-results.side-results,
  .page-calculator #calc-weight .weight-results-column .side-results { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .page-calculator .calc-results.side-results > div + div,
  .page-calculator #calc-weight .weight-results-column .side-results > div + div { padding: 18px 0 8px; border-top: 1px solid #46545f; border-left: 0; }
  .page-calculator .calc-results.side-results strong,
  .page-calculator .weight-summary-panel .calc-results div + div strong { font-size: 36px; }
  .page-calculator .calc-results span { font-size: 12px; }
  .page-calculator .calc-results.side-results small { display: block; margin: 4px 0 0; font-size: 12px; }
  .page-calculator .thread-results strong { font-size: 22px; }
  .page-calculator .calc-formula { grid-template-columns: minmax(0, 1fr); gap: 18px; padding: 20px 18px; }
  .page-calculator .calc-formula-heading { grid-column: 1 / -1; }
  .page-calculator .calc-formula-equation { font-size: 19px; gap: 5px; }
  .page-calculator .calc-formula-equation + .calc-formula-equation { padding: 16px 0 0; border-top: 1px solid #d1dae4; border-left: 0; }
  .page-calculator .calc-symbols { justify-content: flex-start; font-size: 10px; }
}
@media (max-width: 440px) {
  .page-calculator .calc-action-row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .page-calculator .calc-button,
  .page-calculator #calc-weight .calc-button { width: 100%; line-height: 1.4; }
  .page-calculator .calc-reset { justify-self: start; }
}

@media (max-width: 360px) {
  .page-calculator .calc-results.side-results { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .page-calculator .calc-results.side-results > div + div { padding: 16px 0 0; border-top: 1px solid #46545f; border-left: 0; }
  .page-calculator .calc-formula { grid-template-columns: minmax(0, 1fr); }
  .page-calculator .calc-formula-equation + .calc-formula-equation { padding: 12px 0 0; border-top: 1px solid #d1dae4; border-left: 0; }
}