:root {
  color-scheme: dark;
  --bg: #090d17;
  --bg-elevated: #0f1523;
  --panel: #121a2a;
  --panel-strong: #172238;
  --panel-soft: #0d1422;
  --text: #f4f7fb;
  --muted: #9eacc3;
  --subtle: #76869f;
  --line: #26334a;
  --line-strong: #3a4a67;
  --accent: #52e0c4;
  --accent-strong: #80f5df;
  --accent-contrast: #06231e;
  --blue: #6d9dff;
  --violet: #a78bfa;
  --warning: #ffcc66;
  --danger: #ff758b;
  --success: #5be7a5;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.28);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --content: 1180px;
  --result-utilization: 0%;
}

:root[data-theme="warm"] {
  color-scheme: light;
  --bg: #f7f2e8;
  --bg-elevated: #fffaf0;
  --panel: #fffdf8;
  --panel-strong: #f3eadc;
  --panel-soft: #faf4e9;
  --text: #2c2924;
  --muted: #6f675d;
  --subtle: #8d8275;
  --line: #ded3c3;
  --line-strong: #c9baa6;
  --accent: #067a68;
  --accent-strong: #075f53;
  --accent-contrast: #ffffff;
  --blue: #315fb8;
  --violet: #7453a8;
  --warning: #986100;
  --danger: #ba3a50;
  --success: #087c52;
  --shadow: 0 20px 55px rgba(79, 62, 35, 0.13);
}

:root[data-theme="blue"] {
  color-scheme: light;
  --bg: #eaf3ff;
  --bg-elevated: #f7fbff;
  --panel: #ffffff;
  --panel-strong: #e5f0ff;
  --panel-soft: #f1f7ff;
  --text: #102847;
  --muted: #526b89;
  --subtle: #7088a4;
  --line: #c8dbf2;
  --line-strong: #a8c5e8;
  --accent: #006c9c;
  --accent-strong: #004f7f;
  --accent-contrast: #ffffff;
  --blue: #296fe8;
  --violet: #6d55cf;
  --warning: #8a5c00;
  --danger: #b93252;
  --success: #007a55;
  --shadow: 0 22px 58px rgba(33, 85, 145, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 13% -8%, color-mix(in srgb, var(--blue) 16%, transparent) 0, transparent 29rem),
    radial-gradient(circle at 90% 4%, color-mix(in srgb, var(--accent) 12%, transparent) 0, transparent 25rem),
    var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

a {
  color: var(--accent-strong);
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

img,
svg {
  max-width: 100%;
}

.skip-link {
  background: var(--accent);
  border-radius: 0 0 8px 8px;
  color: var(--accent-contrast);
  font-weight: 800;
  left: 1rem;
  padding: 0.7rem 1rem;
  position: fixed;
  top: -5rem;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

.site-header {
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-shell,
.shell {
  margin: 0 auto;
  max-width: var(--content);
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.nav-shell {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  min-height: 72px;
}

.brand {
  align-items: center;
  color: var(--text);
  display: inline-flex;
  font-size: 0.98rem;
  font-weight: 820;
  gap: 0.68rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  height: 34px;
  width: 34px;
}

.nav-actions {
  align-items: center;
  display: flex;
  gap: 1rem;
}

.main-nav {
  display: flex;
  gap: 1.15rem;
}

.main-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--text);
}

.theme-switcher {
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  gap: 0.15rem;
  padding: 0.2rem;
}

.theme-switcher button {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  display: flex;
  height: 29px;
  justify-content: center;
  padding: 0;
  width: 29px;
}

.theme-switcher button[aria-pressed="true"] {
  background: var(--panel-strong);
  box-shadow: inset 0 0 0 1px var(--line-strong);
  color: var(--text);
}

.theme-dot {
  border: 1px solid color-mix(in srgb, currentColor 32%, transparent);
  border-radius: 50%;
  height: 12px;
  width: 12px;
}

.theme-dot.dark {
  background: #111827;
}

.theme-dot.warm {
  background: #f8ecd7;
}

.theme-dot.blue {
  background: #4b9fff;
}

.hero {
  padding-bottom: 2.25rem;
  padding-top: clamp(3.3rem, 8vw, 6.8rem);
  text-align: center;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  margin: 0 0 1rem;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.12;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.45rem, 7vw, 5.35rem);
  letter-spacing: -0.065em;
  margin: 0 auto;
  max-width: 970px;
}

.hero-lede {
  color: var(--muted);
  font-size: clamp(1.02rem, 2vw, 1.24rem);
  margin: 1.45rem auto 0;
  max-width: 760px;
}

.trust-strip {
  align-items: center;
  color: var(--subtle);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.83rem;
  font-weight: 650;
  gap: 0.6rem 1.2rem;
  justify-content: center;
  margin: 1.35rem auto 0;
}

.trust-strip span {
  align-items: center;
  display: inline-flex;
  gap: 0.4rem;
}

.trust-strip svg {
  color: var(--accent);
  height: 16px;
  width: 16px;
}

.calculator-wrap {
  padding-bottom: 5rem;
}

.calculator {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: minmax(0, 0.93fr) minmax(0, 1.07fr);
  overflow: clip;
}

.calculator-inputs,
.calculator-results {
  min-width: 0;
  padding: clamp(1.2rem, 3vw, 2rem);
}

.calculator-inputs {
  border-right: 1px solid var(--line);
}

.calculator-results {
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--blue) 8%, transparent), transparent 48%),
    var(--panel-soft);
}

.panel-heading {
  align-items: flex-start;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1.4rem;
}

.panel-heading h2 {
  font-size: 1.1rem;
  margin: 0;
}

.panel-heading p {
  color: var(--subtle);
  font-size: 0.82rem;
  margin: 0.25rem 0 0;
}

.reset-button {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 760;
  padding: 0.15rem;
}

.reset-button:hover {
  color: var(--text);
}

.form-section + .form-section {
  border-top: 1px solid var(--line);
  margin-top: 1.35rem;
  padding-top: 1.35rem;
}

.section-label {
  color: var(--subtle);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  margin: 0 0 0.85rem;
  text-transform: uppercase;
}

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

.field {
  min-width: 0;
}

.field.full {
  grid-column: 1 / -1;
}

.field label,
.field-label {
  color: var(--muted);
  display: block;
  font-size: 0.8rem;
  font-weight: 760;
  margin-bottom: 0.38rem;
}

.field small,
.field-note {
  color: var(--subtle);
  display: block;
  font-size: 0.72rem;
  line-height: 1.42;
  margin-top: 0.35rem;
}

input,
select {
  background: var(--bg-elevated);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  min-height: 46px;
  outline: none;
  padding: 0.66rem 0.78rem;
  width: 100%;
}

input:focus,
select:focus,
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 28%, transparent);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.input-with-unit {
  position: relative;
}

.input-with-unit input {
  padding-right: 4.2rem;
}

.input-with-unit .unit {
  color: var(--subtle);
  font-size: 0.72rem;
  font-weight: 760;
  pointer-events: none;
  position: absolute;
  right: 0.78rem;
  top: 50%;
  transform: translateY(-50%);
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.preset-row button {
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 720;
  padding: 0.32rem 0.55rem;
}

.preset-row button:hover {
  border-color: var(--accent);
  color: var(--text);
}

.preset-source {
  font-size: 0.7rem;
  margin-top: 0.42rem;
}

.advanced {
  border-top: 1px solid var(--line);
  margin-top: 1.35rem;
  padding-top: 1.1rem;
}

.advanced summary {
  align-items: center;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  font-size: 0.82rem;
  font-weight: 780;
  justify-content: space-between;
  list-style: none;
}

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

.advanced summary::after {
  content: "+";
  font-size: 1.25rem;
  line-height: 1;
}

.advanced[open] summary::after {
  content: "−";
}

.advanced .field-grid {
  margin-top: 1rem;
}

.fit-badge {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 850;
  padding: 0.32rem 0.65rem;
}

.fit-badge[data-state="fits"] {
  background: color-mix(in srgb, var(--success) 12%, transparent);
  border-color: color-mix(in srgb, var(--success) 45%, var(--line));
  color: var(--success);
}

.fit-badge[data-state="over"] {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  border-color: color-mix(in srgb, var(--danger) 45%, var(--line));
  color: var(--danger);
}

.result-hero {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.25rem;
}

.result-kicker {
  color: var(--subtle);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin: 0;
  text-transform: uppercase;
}

.result-total {
  font-size: clamp(2.5rem, 6vw, 4.45rem);
  font-variant-numeric: tabular-nums;
  font-weight: 850;
  letter-spacing: -0.065em;
  line-height: 1;
  margin: 0.55rem 0 0;
}

.result-budget {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.45rem 0 0;
}

.utilization {
  background: var(--panel-strong);
  border-radius: 999px;
  height: 9px;
  margin-top: 1.1rem;
  overflow: hidden;
}

.utilization span {
  background: linear-gradient(90deg, var(--accent), var(--blue));
  border-radius: inherit;
  display: block;
  height: 100%;
  min-width: 0;
  transition: width 220ms ease;
  width: var(--result-utilization);
}

.utilization span[data-state="over"] {
  background: linear-gradient(90deg, var(--warning), var(--danger));
}

.utilization-label {
  color: var(--subtle);
  font-size: 0.74rem;
  margin: 0.38rem 0 0;
}

.result-grid {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1rem;
}

.result-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  min-width: 0;
  padding: 0.9rem;
}

.result-card .label {
  color: var(--subtle);
  display: block;
  font-size: 0.7rem;
  font-weight: 760;
}

.result-card strong {
  display: block;
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.025em;
  margin-top: 0.2rem;
}

.result-card small {
  color: var(--subtle);
  display: block;
  font-size: 0.67rem;
  line-height: 1.35;
  margin-top: 0.18rem;
}

.breakdown {
  margin-top: 1.1rem;
}

.breakdown-bar {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  height: 14px;
  overflow: hidden;
}

.breakdown-bar span {
  display: block;
  height: 100%;
  min-width: 0;
  transition: width 220ms ease;
}

#bar-weights {
  background: var(--blue);
}

#bar-kv {
  background: var(--accent);
}

#bar-reserve {
  background: var(--violet);
}

.breakdown-legend {
  color: var(--subtle);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.68rem;
  gap: 0.55rem 1rem;
  margin-top: 0.45rem;
}

.breakdown-legend span {
  align-items: center;
  display: inline-flex;
  gap: 0.35rem;
}

.legend-dot {
  background: currentColor;
  border-radius: 50%;
  height: 7px;
  width: 7px;
}

.formula-box {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-top: 1rem;
  padding: 0.9rem;
}

.formula-box h3 {
  color: var(--muted);
  font-size: 0.74rem;
  margin: 0 0 0.45rem;
}

.formula-box code {
  color: var(--text);
  display: block;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.result-warnings {
  background: color-mix(in srgb, var(--warning) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--warning) 28%, var(--line));
  border-radius: var(--radius-md);
  color: var(--muted);
  font-size: 0.72rem;
  margin: 0.8rem 0 0;
  padding: 0.75rem 0.75rem 0.75rem 1.8rem;
}

.result-warnings li + li {
  margin-top: 0.35rem;
}

.result-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
}

.button {
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 800;
  gap: 0.45rem;
  justify-content: center;
  min-height: 42px;
  padding: 0.62rem 0.82rem;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.button.secondary {
  background: var(--panel);
  color: var(--text);
}

.button.recommendation {
  background: color-mix(in srgb, var(--warning) 14%, var(--panel));
  border-color: color-mix(in srgb, var(--warning) 45%, var(--line));
  color: var(--warning);
}

.button svg {
  height: 15px;
  width: 15px;
}

.comparison-panels {
  display: grid;
  gap: 1rem;
  grid-column: 1 / -1;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1rem;
}

.mini-table-panel {
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  min-width: 0;
  overflow: hidden;
}

.mini-table-panel h3 {
  font-size: 0.84rem;
  margin: 0;
  padding: 0.85rem 1rem;
}

.table-scroll {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  font-size: 0.72rem;
  width: 100%;
}

th,
td {
  border-top: 1px solid var(--line);
  padding: 0.58rem 0.7rem;
  text-align: right;
  white-space: nowrap;
}

th:first-child,
td:first-child {
  text-align: left;
}

thead th {
  color: var(--subtle);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tbody th {
  color: var(--muted);
  font-weight: 650;
}

tbody tr.is-current {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.table-fit {
  color: var(--success);
  font-weight: 800;
}

.table-over {
  color: var(--danger);
  font-weight: 800;
}

.content-section {
  padding: clamp(4rem, 9vw, 7.5rem) 0;
}

.content-section.alt {
  background: color-mix(in srgb, var(--panel-soft) 67%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.section-intro {
  max-width: 760px;
}

.section-intro h2 {
  font-size: clamp(1.9rem, 4vw, 3.25rem);
  letter-spacing: -0.045em;
  margin: 0;
}

.section-intro p {
  color: var(--muted);
  font-size: 1.03rem;
  margin: 1rem 0 0;
}

.answer-grid,
.feature-grid,
.mistake-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2.25rem;
}

.answer-card,
.feature-card,
.mistake-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.answer-card .number {
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 800;
}

.answer-card h3,
.feature-card h3,
.mistake-card h3 {
  font-size: 1rem;
  margin: 0.7rem 0 0;
}

.answer-card p,
.feature-card p,
.mistake-card p {
  color: var(--muted);
  font-size: 0.84rem;
  margin: 0.55rem 0 0;
}

.example-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  margin-top: 2.25rem;
  padding: clamp(1.3rem, 4vw, 2.4rem);
}

.example-box h3 {
  font-size: 1.35rem;
  margin: 0;
}

.example-box p {
  color: var(--muted);
}

.example-math {
  align-self: center;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: clamp(0.72rem, 1.6vw, 0.9rem);
  line-height: 1.7;
  padding: 1.2rem;
}

.example-math strong {
  color: var(--accent-strong);
}

.reference-block {
  margin-top: 2.25rem;
}

.reference-block > h3 {
  font-size: 1.25rem;
  margin: 0;
}

.reference-block > p {
  color: var(--muted);
  font-size: 0.86rem;
  max-width: 820px;
}

.reference-block .mini-table-panel {
  margin-top: 1rem;
}

.reference-block table {
  font-size: 0.8rem;
}

.reference-block th,
.reference-block td {
  padding: 0.78rem 0.9rem;
}

.runtime-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2.25rem;
}

.command-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.command-card h3 {
  font-size: 1rem;
  margin: 0;
}

.command-card p {
  color: var(--muted);
  font-size: 0.82rem;
}

.command-row {
  align-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-top: 0.8rem;
  padding: 0.8rem;
}

.command-row code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.74rem;
  overflow-wrap: anywhere;
}

.command-row button {
  background: var(--panel-strong);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text);
  flex: 0 0 auto;
  font-size: 0.68rem;
  font-weight: 760;
  padding: 0.35rem 0.52rem;
}

.faq-list {
  border-top: 1px solid var(--line);
  margin-top: 2.25rem;
}

.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 1.15rem 0;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 760;
  list-style: none;
  padding-right: 2rem;
  position: relative;
}

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

.faq-list summary::after {
  color: var(--accent);
  content: "+";
  font-size: 1.25rem;
  position: absolute;
  right: 0;
  top: -0.15rem;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.75rem 3rem 0 0;
  max-width: 860px;
}

.cta-panel {
  align-items: center;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 15%, transparent), color-mix(in srgb, var(--blue) 12%, transparent)),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  padding: clamp(1.4rem, 4vw, 2.5rem);
}

.cta-panel h2 {
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  margin: 0;
}

.cta-panel p {
  color: var(--muted);
  margin: 0.55rem 0 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 5rem;
  padding: 2.4rem 0;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.4fr repeat(2, 0.8fr);
}

.footer-brand p {
  color: var(--subtle);
  font-size: 0.8rem;
  max-width: 380px;
}

.footer-column h2 {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.65rem;
  text-transform: uppercase;
}

.footer-column a {
  color: var(--muted);
  display: block;
  font-size: 0.8rem;
  margin-top: 0.4rem;
  text-decoration: none;
}

.footer-column a:hover {
  color: var(--text);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  color: var(--subtle);
  display: flex;
  font-size: 0.72rem;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.2rem;
}

.toast {
  background: var(--text);
  border-radius: 999px;
  bottom: 1.2rem;
  box-shadow: var(--shadow);
  color: var(--bg);
  font-size: 0.78rem;
  font-weight: 800;
  left: 50%;
  padding: 0.65rem 1rem;
  position: fixed;
  transform: translateX(-50%);
  z-index: 50;
}

.sr-only {
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.legal-hero {
  padding: clamp(3.5rem, 9vw, 7rem) 0 2.5rem;
}

.legal-hero h1 {
  font-size: clamp(2.35rem, 6vw, 4.5rem);
  margin-left: 0;
  max-width: 850px;
}

.legal-hero p {
  color: var(--muted);
  max-width: 740px;
}

.legal-layout {
  display: grid;
  gap: 3rem;
  grid-template-columns: 220px minmax(0, 760px);
  padding-bottom: 5rem;
}

.legal-toc {
  align-self: start;
  position: sticky;
  top: 100px;
}

.legal-toc a {
  color: var(--muted);
  display: block;
  font-size: 0.8rem;
  margin-top: 0.55rem;
  text-decoration: none;
}

.legal-content h2 {
  font-size: 1.55rem;
  margin: 2.4rem 0 0.75rem;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content h3 {
  font-size: 1.05rem;
  margin: 1.6rem 0 0.5rem;
}

.legal-content p,
.legal-content li {
  color: var(--muted);
}

.legal-content code {
  background: var(--panel-strong);
  border-radius: 5px;
  color: var(--text);
  font-size: 0.84em;
  padding: 0.12rem 0.3rem;
}

.legal-content table {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  display: block;
  font-size: 0.82rem;
  margin: 1.25rem 0;
  overflow: auto;
}

.notice {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--muted);
  padding: 1rem 1.1rem;
}

.feedback-options {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.5rem;
}

.feedback-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.feedback-card h2 {
  font-size: 1.05rem;
  margin: 0;
}

.feedback-card p {
  color: var(--muted);
  font-size: 0.84rem;
}

@media (max-width: 980px) {
  .calculator {
    grid-template-columns: 1fr;
  }

  .calculator-inputs {
    border-bottom: 1px solid var(--line);
    border-right: 0;
  }

  .comparison-panels {
    grid-template-columns: 1fr;
  }

  .answer-grid,
  .feature-grid,
  .mistake-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .example-box {
    grid-template-columns: 1fr;
  }

  .legal-layout {
    grid-template-columns: 1fr;
  }

  .legal-toc {
    display: none;
  }
}

@media (max-width: 760px) {
  .main-nav {
    display: none;
  }

  .nav-shell {
    min-height: 64px;
  }

  .brand {
    font-size: 0.88rem;
  }

  .brand-mark {
    height: 31px;
    width: 31px;
  }

  .hero {
    padding-top: 3rem;
  }

  h1 {
    font-size: clamp(2.35rem, 13vw, 3.7rem);
  }

  .calculator-wrap {
    padding-bottom: 3.5rem;
  }

  .calculator-inputs,
  .calculator-results {
    padding: 1.05rem;
  }

  .field-grid,
  .result-grid,
  .runtime-grid,
  .feedback-options {
    grid-template-columns: 1fr;
  }

  .result-actions {
    flex-direction: column;
  }

  .answer-grid,
  .feature-grid,
  .mistake-grid {
    grid-template-columns: 1fr;
  }

  .cta-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.4rem;
  }
}

@media (max-width: 390px) {
  .nav-shell,
  .shell {
    padding-left: 0.9rem;
    padding-right: 0.9rem;
  }

  .brand span {
    max-width: 145px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .trust-strip {
    align-items: flex-start;
    flex-direction: column;
    margin-left: auto;
    margin-right: auto;
    max-width: 230px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}