.ticks-points-guide {
  --tp-bg: #020617;
  --tp-panel: #071426;
  --tp-panel-2: #0a1a2e;
  --tp-border: rgba(148, 163, 184, 0.2);
  --tp-border-strong: rgba(77, 216, 255, 0.36);
  --tp-text: #f8fafc;
  --tp-muted: #aab7c9;
  --tp-cyan: #4dd8ff;
  --tp-blue: #72a7ff;
  --tp-green: #55e99a;
  --tp-amber: #f6c75a;
  --tp-red: #fb7185;
  max-width: 1120px;
  color: var(--tp-text);
}

.tp-skip {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.8rem 1rem;
  border-radius: 0.55rem;
  background: #fff;
  color: #071426 !important;
  font-weight: 850;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.tp-skip:focus {
  transform: translateY(0);
}

.ticks-points-guide *,
.ticks-points-guide *::before,
.ticks-points-guide *::after {
  box-sizing: border-box;
}

.ticks-points-guide a {
  color: #8cc5ff;
  text-underline-offset: 0.2em;
}

.ticks-points-guide p,
.ticks-points-guide li,
.ticks-points-guide td {
  color: var(--tp-muted);
}

.ticks-points-guide strong,
.ticks-points-guide h1,
.ticks-points-guide h2,
.ticks-points-guide h3,
.ticks-points-guide th {
  color: var(--tp-text);
}

.tp-kicker {
  margin: 0 0 0.85rem;
  color: var(--tp-cyan) !important;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.tp-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(350px, 0.9fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  min-height: 650px;
  padding: clamp(2rem, 5vw, 4.4rem);
  overflow: hidden;
  border: 1px solid rgba(77, 216, 255, 0.25);
  border-radius: 1.65rem;
  background:
    radial-gradient(circle at 9% 16%, rgba(77, 216, 255, 0.15), transparent 34%),
    radial-gradient(circle at 91% 42%, rgba(246, 199, 90, 0.13), transparent 34%),
    linear-gradient(145deg, #071726 0%, #061223 58%, #050d1a 100%);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.tp-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.15) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

.tp-hero-copy,
.tp-hero-figure {
  position: relative;
  z-index: 1;
}

.tp-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.7rem, 5.2vw, 5.3rem);
  letter-spacing: -0.055em;
  line-height: 0.97;
}

.tp-byline {
  margin: 1.45rem 0 0;
  font-size: 0.92rem;
  font-weight: 650;
}

.tp-byline a {
  color: var(--tp-text);
  font-weight: 800;
  text-decoration: none;
}

.tp-hero-lede {
  max-width: 700px;
  margin: 1.55rem 0 0;
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  line-height: 1.75;
}

.tp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 1.8rem;
}

.tp-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.8rem 1.28rem;
  border-radius: 999px;
  color: #031018 !important;
  background: linear-gradient(135deg, #6be2ff, #22c5f3);
  box-shadow: 0 12px 30px rgba(34, 197, 243, 0.23);
  font-weight: 850;
  text-decoration: none;
  transition: transform 160ms ease, filter 160ms ease;
}

.tp-button:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.tp-text-link {
  font-weight: 750;
  text-decoration: none;
}

.tp-text-link::after {
  content: " \2192";
}

.tp-hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}

.tp-hero-facts div {
  padding: 0.95rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 0.95rem;
  background: rgba(2, 6, 23, 0.52);
}

.tp-hero-facts span,
.tp-hero-facts strong {
  display: block;
}

.tp-hero-facts span {
  margin-bottom: 0.36rem;
  color: var(--tp-cyan);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tp-hero-facts strong {
  font-size: 0.88rem;
  line-height: 1.35;
}

.tp-hero-figure {
  margin: 0;
  padding: 0.65rem;
  border: 1px solid rgba(77, 216, 255, 0.25);
  border-radius: 1.35rem;
  background: rgba(2, 6, 23, 0.64);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.33);
}

.tp-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.95rem;
}

.tp-hero-figure figcaption {
  padding: 0.8rem 0.45rem 0.35rem;
  color: #8998ad;
  font-size: 0.78rem;
  line-height: 1.5;
}

.tp-on-page {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin: 1rem 0 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--tp-border);
  border-radius: 1rem;
  background: rgba(7, 20, 38, 0.9);
  backdrop-filter: blur(16px);
}

.tp-on-page span {
  margin-right: 0.15rem;
  color: var(--tp-cyan);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.tp-on-page a {
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  color: #bbc7d8;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.tp-on-page a:hover {
  color: white;
  background: rgba(77, 216, 255, 0.11);
}

.tp-section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  scroll-margin-top: 5.5rem;
}

.tp-section-heading {
  max-width: 820px;
  margin-bottom: 2rem;
}

.ticks-points-guide .tp-section h2,
.tp-sources h2,
.tp-related h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.tp-section-heading > p:last-child,
.tp-sources > p,
.tp-related > p {
  max-width: 780px;
  margin: 1rem 0 0;
  font-size: 1.02rem;
  line-height: 1.78;
}

.tp-definition-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.tp-definition-grid article,
.tp-formula-flow article,
.tp-mistakes-grid article {
  padding: 1.25rem;
  border: 1px solid var(--tp-border);
  border-radius: 1.1rem;
  background:
    linear-gradient(180deg, rgba(13, 31, 53, 0.9), rgba(7, 20, 38, 0.92));
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.16);
}

.tp-definition-grid article {
  border-top: 3px solid rgba(77, 216, 255, 0.72);
}

.tp-definition-grid span,
.tp-formula-flow > article > span,
.tp-mistakes-grid > article > span,
.tp-related-tools span,
.tp-table-block > h3 {
  color: var(--tp-cyan);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.tp-definition-grid h3,
.tp-formula-flow h3,
.tp-mistakes-grid h3 {
  margin: 0.65rem 0 0.55rem;
  font-size: 1.12rem;
  line-height: 1.25;
}

.tp-definition-grid p,
.tp-formula-flow p,
.tp-mistakes-grid p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
}

.tp-source-note,
.tp-spec-warning {
  margin-top: 1.25rem;
  padding: 1.05rem 1.15rem;
  border: 1px solid rgba(77, 216, 255, 0.3);
  border-radius: 1rem;
  color: #b8c7da;
  background: rgba(77, 216, 255, 0.07);
  font-size: 0.92rem;
  line-height: 1.65;
}

.tp-source-note strong,
.tp-spec-warning strong {
  color: var(--tp-text);
}

.tp-principle {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  margin: 1.25rem 0;
  padding: clamp(1.7rem, 5vw, 3rem);
  border: 1px solid rgba(246, 199, 90, 0.42);
  border-radius: 1.35rem;
  background:
    radial-gradient(circle at 92% 8%, rgba(246, 199, 90, 0.11), transparent 33%),
    #091728;
}

.tp-principle p {
  margin: 0 0 1rem;
  font-size: 1.03rem;
  line-height: 1.78;
}

.tp-principle p:last-child {
  margin-bottom: 0;
}

.tp-formula-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.tp-formula-flow article {
  position: relative;
  overflow: hidden;
}

.tp-formula-flow article::after {
  position: absolute;
  right: -25px;
  bottom: -42px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  content: "";
  background: rgba(77, 216, 255, 0.06);
}

.tp-equation {
  margin: 0.85rem 0 !important;
  padding: 0.72rem;
  border: 1px solid rgba(77, 216, 255, 0.2);
  border-radius: 0.75rem;
  color: #e5f8ff !important;
  background: rgba(2, 6, 23, 0.6);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.88rem !important;
}

.tp-worked-example {
  display: grid;
  grid-template-columns: minmax(230px, 0.7fr) minmax(0, 1.3fr);
  gap: 1.5rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1.25rem;
  border: 1px solid rgba(85, 233, 154, 0.28);
  border-radius: 1.1rem;
  background: rgba(85, 233, 154, 0.06);
}

.tp-worked-example h3 {
  margin: 0;
  font-size: 1.25rem;
}

.tp-worked-example ol {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tp-worked-example li {
  padding: 0.8rem;
  border-radius: 0.8rem;
  background: rgba(2, 6, 23, 0.48);
}

.tp-worked-example li span,
.tp-worked-example li strong {
  display: block;
}

.tp-worked-example li span {
  margin-bottom: 0.35rem;
  color: #8998ad;
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tp-worked-example li strong {
  font-size: 0.88rem;
  line-height: 1.35;
}

.tp-calculator-section {
  position: relative;
}

.tp-calculator-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 0.9fr);
  gap: 1rem;
  align-items: stretch;
}

.tp-calculator-form,
.tp-calculator-results {
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border: 1px solid var(--tp-border);
  border-radius: 1.2rem;
  background: linear-gradient(150deg, rgba(11, 28, 48, 0.98), rgba(5, 15, 29, 0.98));
}

.tp-calculator-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.tp-field {
  display: grid;
  gap: 0.4rem;
}

.tp-field-wide,
.tp-form-actions {
  grid-column: 1 / -1;
}

.tp-field label {
  color: #d9e6f3;
  font-size: 0.78rem;
  font-weight: 780;
}

.tp-field input,
.tp-field select {
  width: 100%;
  min-height: 46px;
  padding: 0.72rem 0.78rem;
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 0.7rem;
  color: var(--tp-text);
  background: #030b18;
  font: inherit;
}

.tp-field input:focus,
.tp-field select:focus {
  border-color: var(--tp-cyan);
  outline: 3px solid rgba(77, 216, 255, 0.15);
}

.tp-form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.tp-calculate,
.tp-reset {
  min-height: 45px;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  font: inherit;
  font-weight: 820;
  cursor: pointer;
}

.tp-calculate {
  border: 0;
  color: #031018;
  background: linear-gradient(135deg, #6be2ff, #22c5f3);
}

.tp-reset {
  border: 1px solid rgba(148, 163, 184, 0.32);
  color: #d9e6f3;
  background: transparent;
}

.tp-calculator-results h3 {
  margin: 0;
  font-size: 1.45rem;
}

.tp-results-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
  margin-top: 1rem;
}

.tp-results-grid > div {
  min-height: 100px;
  padding: 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.19);
  border-radius: 0.85rem;
  background: rgba(2, 6, 23, 0.52);
}

.tp-results-grid span,
.tp-results-grid strong {
  display: block;
}

.tp-results-grid span {
  margin-bottom: 0.52rem;
  color: #8f9db1;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tp-results-grid strong {
  overflow-wrap: anywhere;
  font-size: clamp(1rem, 2.1vw, 1.35rem);
  line-height: 1.25;
}

.tp-results-grid .tp-result-total {
  border-color: rgba(85, 233, 154, 0.35);
  background: rgba(85, 233, 154, 0.08);
}

.tp-result-status {
  margin: 0.85rem 0 0;
  padding: 0.78rem 0.9rem;
  border-radius: 0.75rem;
  font-size: 0.86rem;
  line-height: 1.5;
}

.tp-result-status.is-valid {
  color: #b6f8d2;
  background: rgba(85, 233, 154, 0.1);
}

.tp-result-status.is-loss,
.tp-result-status.is-invalid {
  color: #fecdd3;
  background: rgba(251, 113, 133, 0.11);
}

.tp-result-status.is-warning {
  color: #fde9a7;
  background: rgba(246, 199, 90, 0.11);
}

.tp-result-status.is-flat {
  color: #d4deeb;
  background: rgba(148, 163, 184, 0.1);
}

.tp-calculator-boundary {
  margin: 0.8rem 0 0;
  font-size: 0.77rem;
  line-height: 1.55;
}

.tp-table-block + .tp-table-block {
  margin-top: 1.4rem;
}

.tp-table-block > h3 {
  margin: 0 0 0.65rem;
}

.tp-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--tp-border);
  border-radius: 1rem;
  background: rgba(7, 20, 38, 0.86);
}

.tp-table-wrap table {
  width: 100%;
  min-width: 760px;
  margin: 0;
  border-collapse: collapse;
}

.tp-table-wrap th,
.tp-table-wrap td {
  padding: 0.88rem 0.95rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.13);
  text-align: left;
  vertical-align: middle;
}

.tp-table-wrap th {
  color: #dce9f6;
  background: rgba(77, 216, 255, 0.07);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tp-table-wrap td {
  font-size: 0.88rem;
}

.tp-table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.tp-table-wrap tbody tr:hover {
  background: rgba(77, 216, 255, 0.04);
}

.tp-spec-warning {
  border-color: rgba(246, 199, 90, 0.35);
  background: rgba(246, 199, 90, 0.07);
}

.tp-spec-warning p {
  margin: 0.35rem 0 0;
}

.tp-four-numbers {
  border-top: 1px solid var(--tp-border);
  border-bottom: 1px solid var(--tp-border);
}

.tp-number-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.tp-number-grid article {
  position: relative;
  overflow: hidden;
  padding: 1.35rem;
  border: 1px solid var(--tp-border);
  border-radius: 1rem;
  background: linear-gradient(145deg, rgba(10, 26, 46, 0.96), rgba(4, 14, 28, 0.96));
}

.tp-number-grid article::before {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--tp-cyan);
  content: "";
}

.tp-number-grid article:nth-child(2)::before {
  background: var(--tp-blue);
}

.tp-number-grid article:nth-child(3)::before {
  background: var(--tp-amber);
}

.tp-number-grid article:nth-child(4)::before {
  background: var(--tp-green);
}

.tp-number-grid span {
  color: var(--tp-cyan);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tp-number-grid h3 {
  margin: 0.55rem 0 0.8rem;
  font-size: 1.13rem;
  line-height: 1.35;
}

.tp-number-grid p {
  margin: 0;
  padding: 0.72rem 0.8rem;
  border-radius: 0.7rem;
  background: rgba(77, 216, 255, 0.07);
  font-size: 0.86rem;
}

.tp-number-grid em {
  display: block;
  margin-top: 0.85rem;
  color: #aebdce;
  font-size: 0.82rem;
  font-style: normal;
  line-height: 1.58;
}

.tp-comparison-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.72rem;
}

.tp-comparison-grid article {
  padding: 1.05rem 0.8rem;
  border: 1px solid var(--tp-border);
  border-radius: 0.95rem;
  background: linear-gradient(180deg, rgba(12, 31, 52, 0.9), rgba(6, 18, 34, 0.94));
  text-align: center;
}

.tp-comparison-grid span,
.tp-comparison-grid strong {
  display: block;
}

.tp-comparison-grid span {
  color: var(--tp-cyan);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.tp-comparison-grid strong {
  margin: 0.35rem 0;
  font-size: 1.5rem;
}

.tp-comparison-grid p {
  margin: 0;
  font-size: 0.74rem;
}

.tp-execution-section {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: clamp(1.5rem, 5vw, 3.5rem);
  align-items: center;
  margin: 1rem 0;
  padding: clamp(1.6rem, 5vw, 3rem);
  border: 1px solid rgba(114, 167, 255, 0.36);
  border-radius: 1.35rem;
  background:
    radial-gradient(circle at 100% 0%, rgba(114, 167, 255, 0.14), transparent 34%),
    #081729;
}

.tp-execution-copy h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.tp-execution-copy p {
  margin: 1rem 0 0;
  font-size: 1rem;
  line-height: 1.78;
}

.tp-execution-math {
  padding: 1.35rem;
  border: 1px solid rgba(77, 216, 255, 0.25);
  border-radius: 1.05rem;
  background: rgba(2, 6, 23, 0.6);
}

.tp-execution-math span,
.tp-execution-math strong,
.tp-execution-math output {
  display: block;
}

.tp-execution-math span {
  color: var(--tp-cyan);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.tp-execution-math strong {
  margin: 0.65rem 0 0.45rem;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: clamp(1.25rem, 3vw, 2rem);
}

.tp-execution-math p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.55;
}

.tp-execution-math output {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  color: var(--tp-green);
  font-size: 1.28rem;
  font-weight: 900;
}

.tp-workflow {
  display: grid;
  gap: 0.72rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tp-workflow li {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 1rem 1.1rem;
  border: 1px solid var(--tp-border);
  border-radius: 0.95rem;
  background: rgba(7, 20, 38, 0.82);
}

.tp-workflow > li > span {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 50%;
  color: #031018;
  background: var(--tp-cyan);
  font-size: 0.76rem;
  font-weight: 900;
}

.tp-workflow h3 {
  margin: 0;
  font-size: 1.05rem;
}

.tp-workflow p {
  margin: 0.35rem 0 0;
  line-height: 1.62;
}

.tp-related-tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1rem;
}

.tp-related-tools > a {
  display: block;
  padding: 1.15rem;
  border: 1px solid rgba(85, 233, 154, 0.25);
  border-radius: 1rem;
  background: rgba(85, 233, 154, 0.055);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}

.tp-related-tools > a:hover {
  border-color: rgba(85, 233, 154, 0.5);
  transform: translateY(-2px);
}

.tp-related-tools strong {
  display: block;
  margin-top: 0.45rem;
  font-size: 1.05rem;
}

.tp-related-tools p {
  margin: 0.45rem 0 0;
  font-size: 0.88rem;
  line-height: 1.6;
}

.tp-mistakes-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.tp-mistakes-grid article {
  border-top: 3px solid rgba(251, 113, 133, 0.6);
}

.tp-checklist {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  margin: 1rem 0;
  padding: clamp(1.6rem, 5vw, 3rem);
  border: 1px solid rgba(85, 233, 154, 0.34);
  border-radius: 1.35rem;
  background:
    radial-gradient(circle at 0% 100%, rgba(85, 233, 154, 0.11), transparent 35%),
    #081729;
}

.tp-checklist h2 {
  margin: 0;
}

.tp-checklist ul {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tp-checklist li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  padding: 0.72rem 0.85rem;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 0.78rem;
  background: rgba(2, 6, 23, 0.45);
}

.tp-checklist li span {
  color: var(--tp-green);
  font-size: 0.72rem;
  font-weight: 900;
}

.tp-checklist li strong {
  font-size: 0.92rem;
}

.tp-faq details {
  border-top: 1px solid rgba(148, 163, 184, 0.19);
}

.tp-faq details:last-child {
  border-bottom: 1px solid rgba(148, 163, 184, 0.19);
}

.tp-faq summary {
  position: relative;
  padding: 1.05rem 2.5rem 1.05rem 0;
  color: var(--tp-text);
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

.tp-faq summary::-webkit-details-marker {
  display: none;
}

.tp-faq summary::after {
  position: absolute;
  top: 50%;
  right: 0.35rem;
  color: var(--tp-cyan);
  content: "+";
  font-size: 1.35rem;
  transform: translateY(-50%);
}

.tp-faq details[open] summary::after {
  content: "\2212";
}

.tp-faq details p {
  max-width: 820px;
  margin: -0.15rem 0 1.1rem;
  line-height: 1.75;
}

.tp-sources,
.tp-related {
  margin-top: clamp(3rem, 7vw, 5rem);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--tp-border);
  border-radius: 1.25rem;
  background: rgba(7, 20, 38, 0.82);
}

.tp-sources ul {
  display: grid;
  gap: 0.75rem;
  margin: 1.25rem 0 0;
  padding-left: 1.2rem;
}

.tp-sources li {
  line-height: 1.65;
}

.tp-related > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.25rem;
}

.tp-related > div > a {
  display: block;
  padding: 1.05rem;
  border: 1px solid rgba(77, 216, 255, 0.2);
  border-radius: 0.9rem;
  background: rgba(2, 6, 23, 0.48);
  text-decoration: none;
}

.tp-related > div > a:hover {
  border-color: rgba(77, 216, 255, 0.48);
}

.tp-related strong,
.tp-related span {
  display: block;
}

.tp-related span {
  margin-top: 0.45rem;
  color: #91a1b5;
  font-size: 0.84rem;
  line-height: 1.55;
}

.tp-disclaimer {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(246, 199, 90, 0.3);
  border-radius: 0.95rem;
  background: rgba(246, 199, 90, 0.055);
}

.tp-disclaimer strong {
  display: block;
  margin-bottom: 0.3rem;
}

.tp-disclaimer p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.62;
}

.ticks-points-guide :focus-visible {
  outline: 3px solid rgba(77, 216, 255, 0.65);
  outline-offset: 3px;
}

.tp-skip:focus-visible {
  outline: 3px solid #4dd8ff;
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .tp-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .tp-hero-figure {
    max-width: 670px;
  }

  .tp-definition-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tp-related > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tp-calculator-shell,
  .tp-execution-section {
    grid-template-columns: 1fr;
  }

  .tp-comparison-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .tp-mistakes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .tp-hero {
    padding: 1.35rem;
    border-radius: 1.2rem;
  }

  .tp-hero h1 {
    font-size: clamp(2.45rem, 12vw, 4.2rem);
  }

  .tp-hero-facts,
  .tp-formula-flow,
  .tp-number-grid,
  .tp-worked-example,
  .tp-principle,
  .tp-checklist,
  .tp-related > div {
    grid-template-columns: 1fr;
  }

  .tp-worked-example ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tp-on-page {
    position: static;
  }

  .tp-calculator-form {
    grid-template-columns: 1fr;
  }

  .tp-field-wide,
  .tp-form-actions {
    grid-column: auto;
  }

  .tp-related-tools {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .tp-hero-actions,
  .tp-form-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .tp-button,
  .tp-calculate,
  .tp-reset {
    width: 100%;
  }

  .tp-definition-grid,
  .tp-results-grid,
  .tp-comparison-grid,
  .tp-mistakes-grid {
    grid-template-columns: 1fr;
  }

  .tp-worked-example ol {
    grid-template-columns: 1fr;
  }

  .tp-workflow li {
    grid-template-columns: 48px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tp-skip,
  .tp-button,
  .tp-related-tools > a {
    transition: none;
  }
}

@media print {
  .tp-on-page,
  .tp-skip,
  .tp-hero-actions,
  .tp-calculator-form {
    display: none;
  }

  .tp-hero,
  .tp-section,
  .tp-sources,
  .tp-related,
  .tp-disclaimer {
    color: #111827;
    background: white;
    box-shadow: none;
  }

  .ticks-points-guide p,
  .ticks-points-guide li,
  .ticks-points-guide td,
  .ticks-points-guide strong,
  .ticks-points-guide h1,
  .ticks-points-guide h2,
  .ticks-points-guide h3 {
    color: #111827;
  }
}