:root {
  --bg: #120e0b;
  --bg-wash: #1b1510;
  --steel: #3a3228;
  --panel: #2a2219;
  --panel-raise: #352b20;
  --ink: #f7f1e6;
  --muted: #c4b49a;
  --line: #6d5a3f;
  --amber: #f0a202;
  --amber-soft: #ffc857;
  --ember: #e4570e;
  --result: #ffe08a;
  --err: #ff7a59;
  --focus: #ffd56a;
  --shadow: 0 22px 50px rgba(0, 0, 0, 0.45);
  --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-num: "Cascadia Mono", Consolas, "ui-monospace", monospace;
  --max: 72rem;
  --gutter: 1.15rem;
  --plate:
    repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.035) 0 2px,
      transparent 2px 10px
    ),
    repeating-linear-gradient(
      45deg,
      rgba(0, 0, 0, 0.18) 0 3px,
      transparent 3px 12px
    );
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  background: #120e0b;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background-color: #120e0b;
  background-image:
    radial-gradient(ellipse 70% 45% at 8% -8%, rgba(228, 87, 14, 0.28), transparent 52%),
    radial-gradient(ellipse 50% 36% at 100% 0%, rgba(240, 162, 2, 0.14), transparent 48%),
    var(--plate),
    linear-gradient(180deg, #221910, #120e0b 34rem);
  background-attachment: fixed;
}

.skip,
.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--amber-soft);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--result);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 20;
  padding: 0.45rem 0.75rem;
  background: var(--amber);
  color: #1a1208;
  font-weight: 700;
  text-decoration: none;
}

.skip:focus {
  top: 0.75rem;
}

.wrap {
  width: min(var(--max), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, #3b3126, #241c15);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.site-header::after {
  content: "";
  display: block;
  height: 6px;
  background: linear-gradient(90deg, var(--ember) 0 28%, var(--amber) 28% 46%, #7a4a14 46% 48%, transparent 48%);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 0;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--ink);
}

.mark {
  width: 2.8rem;
  height: 2.8rem;
  flex: none;
  border: 1px solid #8a6a2a;
  border-radius: 8px;
  background: #1a140e;
  box-shadow: inset 0 0 0 2px #2b2118;
}

.wordmark-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.wordmark-kicker {
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--amber);
  text-transform: uppercase;
}

.wordmark-name {
  font-size: 1.32rem;
  letter-spacing: 0.06em;
  font-weight: 800;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #1a140e;
  color: var(--ink);
  padding: 0.45rem 0.7rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.site-nav ul {
  display: flex;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  padding: 0.4rem 0.7rem;
  border-radius: 6px;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: #1a1208;
  background: var(--amber);
}

.hero {
  padding: 2.6rem 0 1.5rem;
}

.hero-bench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(13rem, 20rem);
  gap: 2.2rem;
  align-items: center;
}

.hero-copy .lede {
  margin-bottom: 0;
}

.hero-mark {
  display: grid;
  place-items: center;
  align-self: center;
  position: relative;
  min-height: 20rem;
}

.hero-mark::before,
.hero-mark::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-mark::before {
  inset: 6%;
  border: 1px dashed rgba(240, 162, 2, 0.28);
}

.hero-mark::after {
  inset: 18%;
  border: 1px solid rgba(228, 87, 14, 0.18);
}

.hero-mark img {
  position: relative;
  z-index: 1;
  width: min(100%, 19rem);
  filter: drop-shadow(0 22px 36px rgba(228, 87, 14, 0.38));
}

.home-tool {
  max-width: none;
  margin-top: 1.5rem;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 1rem;
}

.section-head h2 {
  margin: 0;
}

.section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent 88%);
}

.kicker {
  display: inline-block;
  margin: 0 0 0.65rem;
  padding: 0.2rem 0.55rem;
  color: #1a1208;
  background: var(--amber);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 800;
}

h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2.05rem, 5.4vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  max-width: 36ch;
  text-wrap: balance;
}

.lede,
.prose p,
.when-to-use p {
  max-width: 62ch;
  color: var(--muted);
}

.lede {
  font-size: 1.12rem;
  color: var(--ink);
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.25rem;
  align-items: start;
}

.panel {
  background:
    linear-gradient(180deg, rgba(255, 200, 87, 0.05), transparent 30%),
    var(--panel);
  border: 1px solid var(--line);
  border-top: 4px solid var(--ember);
  border-radius: 6px;
  padding: 1.2rem 1.2rem 1.3rem;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.panel h2,
.section h2,
.faq h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
}

.form-grid {
  display: grid;
  gap: 0.85rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.field-row-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

label {
  font-weight: 700;
}

label input[type="checkbox"] {
  width: auto;
  min-height: 0;
  margin-right: 0.4rem;
}

.hint {
  color: var(--muted);
  font-size: 0.92rem;
}

input[type="number"],
input[type="text"],
select,
textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.45rem 0.65rem;
  border: 1px solid #7a6548;
  border-radius: 4px;
  background: #100d0a;
  color: var(--ink);
  font: inherit;
}

input[aria-invalid="true"] {
  border-color: var(--err);
}

.field-error {
  min-height: 1.2em;
  color: var(--err);
  font-size: 0.92rem;
}

.unit-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.unit-bar[hidden] {
  display: none;
}

.seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.seg button {
  border: 0;
  background: #16110c;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
}

.seg button[aria-pressed="true"] {
  background: var(--ember);
  color: #fff8ee;
}

.result-well {
  margin-top: 1rem;
  padding: 1.1rem 1.1rem 1.15rem;
  border-radius: 4px;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(240, 162, 2, 0.22), transparent 55%),
    #1d160f;
  border: 2px solid #c98414;
  box-shadow: inset 0 0 24px rgba(240, 162, 2, 0.08);
}

.result-label {
  margin: 0;
  color: var(--amber-soft);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.result-value {
  margin: 0.2rem 0 0.4rem;
  font-family: var(--font-num);
  font-size: clamp(2.6rem, 8vw, 4.4rem);
  line-height: 1;
  color: var(--result);
  letter-spacing: -0.03em;
  text-shadow: 0 0 18px rgba(240, 162, 2, 0.35);
}

.result-sub {
  margin: 0;
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7rem;
  padding: 0.4rem 0.95rem;
  border-radius: 4px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--ember);
  color: #fff8ee;
}

.btn-primary:hover {
  background: #ff6a1a;
}

.btn-ghost {
  background: #16110c;
  border-color: var(--line);
  color: var(--ink);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #16110c;
}

table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 0.7rem 0.8rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  background: #2a2118;
  color: var(--amber-soft);
  font-weight: 800;
}

td.num,
th.num {
  text-align: right;
  font-family: var(--font-num);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16.5rem, 1fr));
  gap: 0.9rem;
}

.card {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  column-gap: 0.8rem;
  padding: 1.1rem 1.15rem 1.15rem;
  background:
    linear-gradient(180deg, rgba(255, 200, 87, 0.06), transparent 42%),
    var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--amber);
  border-radius: 6px;
  text-decoration: none;
  color: inherit;
  min-height: 8.6rem;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.22);
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.card:hover {
  border-color: var(--amber);
  transform: translateY(-3px);
  box-shadow: 0 16px 28px rgba(0, 0, 0, 0.32);
  color: inherit;
}

.card-ico {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 6px;
  background: #1a140e;
  border: 1px solid #8a6a2a;
}

.card-ico img {
  width: 1.35rem;
  height: 1.35rem;
}

.card h2,
.card h3 {
  grid-column: 2;
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  color: var(--ink);
}

.card p {
  margin: 0;
  grid-column: 2;
  color: var(--muted);
}

.section {
  padding: 0.4rem 0 2rem;
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.faq details p {
  margin: 0.5rem 0 0;
  color: var(--muted);
}

.extras {
  display: grid;
  gap: 0.75rem;
}

.extra {
  padding: 0.9rem 1rem;
  border-left: 5px solid var(--amber);
  background: var(--panel);
}

.extra p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.example-row {
  margin-top: 0.55rem;
}

@media (max-width: 800px) {
  .panel .result-well {
    position: sticky;
    bottom: 0.4rem;
    z-index: 4;
  }
}

.btn[data-copied="true"] {
  border-color: var(--amber);
  color: var(--amber-soft);
}

.site-footer {
  margin-top: 2.5rem;
  border-top: 6px solid var(--ember);
  padding: 1.5rem 0 2.2rem;
  color: var(--muted);
  font-size: 0.95rem;
  background: #0d0a08;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
  margin-bottom: 0.7rem;
}

.site-footer a {
  color: var(--ink);
}

.prose h2 {
  margin-top: 1.8rem;
}

.prose ul {
  color: var(--muted);
}

.note {
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 800px) {
  .hero-bench {
    grid-template-columns: 1fr;
  }

  .hero-mark {
    display: none;
  }

  .grid-2,
  .field-row,
  .field-row-3 {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    right: var(--gutter);
    top: 4.6rem;
    background: #2a2219;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0.7rem 1rem;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0.35rem;
  }
}