:root {
  --kt-ink: #151513;
  --kt-muted: #6b6860;
  --kt-line: #d9d6cc;
  --kt-paper: #fff;
  --kt-soft: #f5f3ed;
  --kt-night: #151513;
  --kt-gold: #b57808;
  --kt-gold-bright: #f0a812;
  --kt-green: #1c7d50;
  --kt-coral: #ed725b;
  --kt-blue: #4f70d8;
  --kt-shadow: 0 28px 70px rgba(34, 27, 12, 0.1);
}

[data-theme="dark"] {
  --kt-ink: #f6f3ea;
  --kt-muted: #b7b2a7;
  --kt-line: #413e36;
  --kt-paper: #1b1b18;
  --kt-soft: #26251f;
  --kt-night: #0d0d0c;
  --kt-gold: #e2a228;
  --kt-shadow: 0 30px 75px rgba(0, 0, 0, 0.36);
}

.kt-page {
  color: var(--kt-ink);
  padding-bottom: clamp(4rem, 8vw, 8rem);
}

.kt-page .article-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.45rem;
}

.kt-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  padding: clamp(3rem, 8vw, 7rem) 0 clamp(2.8rem, 6vw, 5.5rem);
}

.kt-kicker {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 -0.5rem;
  color: var(--kt-gold);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.kt-kicker span,
.kt-live-dot {
  width: 0.52rem;
  height: 0.52rem;
  flex: 0 0 auto;
  border-radius: 999px;
  background: currentColor;
}

.kt-hero h1 {
  margin: 0;
  font-size: clamp(4.3rem, 11.5vw, 11rem);
  line-height: 0.77;
  letter-spacing: -0.085em;
}

.kt-hero-copy {
  padding-bottom: 0.75rem;
}

.kt-hero-copy > p {
  margin: 0;
  color: var(--kt-muted);
  font-size: clamp(1.1rem, 2vw, 1.55rem);
  line-height: 1.48;
}

.kt-hero-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  color: var(--kt-green);
  font-size: 0.8rem;
  font-weight: 750;
}

.kt-hero-copy li::before {
  margin-right: 0.42rem;
  content: "●";
  font-size: 0.6rem;
}

.kt-studio {
  overflow: hidden;
  border: 1px solid var(--kt-line);
  border-radius: clamp(24px, 4vw, 44px);
  background: var(--kt-paper);
  box-shadow: var(--kt-shadow);
}

.kt-studio-topline {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 3vw, 1.8rem);
  border-bottom: 1px solid var(--kt-line);
  color: var(--kt-muted);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.04em;
}

.kt-studio-topline p {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.kt-live-dot {
  color: #30b471;
  box-shadow: 0 0 0 4px rgba(48, 180, 113, 0.13);
}

.kt-upload-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(430px, 58vw, 650px);
  padding: clamp(2rem, 6vw, 5rem);
  background:
    radial-gradient(circle at 50% 45%, rgba(240, 168, 18, 0.16), transparent 28%),
    linear-gradient(145deg, var(--kt-paper), var(--kt-soft));
  isolation: isolate;
}

.kt-orbit {
  position: absolute;
  inset: 50% auto auto 50%;
  width: min(66vw, 590px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: -1;
}

.kt-orbit span {
  position: absolute;
  inset: 0;
  border: 1px solid color-mix(in srgb, var(--kt-gold) 32%, transparent);
  border-radius: 50%;
}

.kt-orbit span:nth-child(2) {
  inset: 15%;
  border-style: dashed;
  animation: kt-spin 32s linear infinite;
}

.kt-orbit span:nth-child(3) {
  inset: 32%;
  border-color: color-mix(in srgb, var(--kt-gold) 65%, transparent);
}

@keyframes kt-spin {
  to { transform: rotate(360deg); }
}

.kt-dropzone {
  display: flex;
  width: min(100%, 560px);
  min-height: 280px;
  box-sizing: border-box;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 1px solid var(--kt-line);
  border-radius: 32px;
  background: color-mix(in srgb, var(--kt-paper) 91%, transparent);
  box-shadow: 0 20px 55px rgba(56, 42, 7, 0.08);
  text-align: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: transform 170ms ease, border-color 170ms ease, background 170ms ease;
}

.kt-dropzone:hover,
.kt-dropzone:focus-within,
.kt-dropzone.is-dragging {
  transform: translateY(-4px) scale(1.01);
  border-color: var(--kt-gold);
  background: color-mix(in srgb, var(--kt-paper) 82%, #fff2ce);
}

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

.kt-upload-icon {
  display: grid;
  width: 66px;
  height: 66px;
  place-items: center;
  margin-bottom: 1.25rem;
  border-radius: 50%;
  background: var(--kt-night);
  color: #fff;
  font-size: 2rem;
  line-height: 1;
}

.kt-dropzone strong {
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.kt-dropzone small {
  margin-top: 0.85rem;
  color: var(--kt-muted);
}

.kt-demo-line {
  position: absolute;
  bottom: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  color: var(--kt-muted);
  font-size: 0.85rem;
}

.kt-demo-line button,
.kt-text-button {
  border: 0;
  border-bottom: 1px solid currentColor;
  background: transparent;
  color: var(--kt-gold);
  padding: 0;
  font: inherit;
  font-weight: 780;
  cursor: pointer;
}

.kt-upload-error {
  position: absolute;
  bottom: 4.7rem;
  max-width: 580px;
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid #e1a89f;
  border-radius: 12px;
  background: #fff0ed;
  color: #8c3225;
  font-weight: 700;
}

.kt-workbench {
  padding: clamp(1rem, 3vw, 2rem);
}

.kt-filebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.25rem 0 1.25rem;
}

.kt-filebar > div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.12rem 0.7rem;
  align-items: center;
}

.kt-filebar strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kt-filebar small {
  grid-column: 2;
  color: var(--kt-muted);
}

.kt-file-state {
  grid-row: 1 / 3;
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  background: #e3f5ea;
  color: #216e46;
  font-size: 0.69rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kt-wave-stage {
  position: relative;
  overflow: hidden;
  padding: clamp(1rem, 3vw, 1.6rem);
  border-radius: 26px;
  background: var(--kt-night);
  color: #f7f5ee;
}

.kt-wave-labels {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: #aaa79f;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.kt-wave-stage canvas {
  display: block;
  width: 100%;
  height: clamp(170px, 24vw, 270px);
  margin: 0.55rem 0;
}

.kt-playhead {
  position: absolute;
  top: 2.7rem;
  bottom: 4.9rem;
  left: 1.6rem;
  width: 1px;
  background: rgba(255, 255, 255, 0.62);
  pointer-events: none;
  opacity: 0;
}

.kt-playhead.is-playing { opacity: 1; }

.kt-transport {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
}

.kt-transport button {
  min-height: 44px;
  border: 1px solid #3f3e39;
  border-radius: 999px;
  background: transparent;
  color: #f7f5ee;
  padding: 0 1rem;
  font: inherit;
  font-weight: 780;
  cursor: pointer;
}

.kt-transport .is-accent {
  border-color: var(--kt-gold-bright);
  background: var(--kt-gold-bright);
  color: #17150f;
}

.kt-transport span:last-child {
  margin-left: auto;
  color: #aaa79f;
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
}

.kt-decision-head {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(280px, 1.15fr);
  gap: clamp(1rem, 4vw, 4rem);
  align-items: end;
  margin: clamp(2.5rem, 6vw, 5rem) 0 1.5rem;
}

.kt-decision-head > div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
}

.kt-step {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid var(--kt-line);
  border-radius: 50%;
  color: var(--kt-gold);
  font-size: 0.72rem;
  font-weight: 850;
}

.kt-decision-head h2,
.kt-sculptor h2,
.kt-result-panel h2,
.kt-editorial h2,
.kt-faq h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.7rem);
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.kt-decision-head > p,
.kt-sculptor-copy p {
  margin: 0;
  color: var(--kt-muted);
  line-height: 1.55;
}

.kt-mode-tabs {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.3rem;
  border: 1px solid var(--kt-line);
  border-radius: 999px;
  background: var(--kt-soft);
}

.kt-mode-tabs button {
  min-height: 42px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--kt-muted);
  padding: 0 1rem;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 780;
  cursor: pointer;
}

.kt-mode-tabs button.is-active {
  background: var(--kt-night);
  color: #fff;
}

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

.kt-mode-card {
  position: relative;
  display: flex;
  min-height: 210px;
  overflow: hidden;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--kt-line);
  border-radius: 22px;
  background: var(--kt-paper);
  color: var(--kt-ink);
  padding: 1.2rem;
  text-align: left;
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.kt-mode-card:hover,
.kt-mode-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--kt-gold);
}

.kt-mode-card.is-selected {
  border-color: var(--kt-night);
  background: var(--kt-night);
  color: #fff;
}

.kt-mode-card > span {
  color: var(--kt-gold);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.kt-mode-card strong {
  margin: auto 0 0.55rem;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.kt-mode-card small {
  max-width: 30ch;
  color: var(--kt-muted);
  line-height: 1.42;
}

.kt-mode-card.is-selected small { color: #b8b5ad; }

.kt-mode-card i {
  position: absolute;
  top: -0.2rem;
  right: 0.5rem;
  color: color-mix(in srgb, var(--kt-muted) 13%, transparent);
  font-size: 5rem;
  font-style: normal;
  font-weight: 900;
  letter-spacing: -0.08em;
}

.kt-sculptor {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: center;
  margin: clamp(2.5rem, 6vw, 5rem) 0;
  padding: clamp(1.4rem, 4vw, 3rem);
  border-radius: 28px;
  background: var(--kt-soft);
}

.kt-sculptor-copy {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
}

.kt-sculptor-copy p { grid-column: 2; }

.kt-intensity {
  display: grid;
  gap: 0.9rem;
}

.kt-intensity > span:first-child,
.kt-range-labels {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.kt-intensity output {
  color: var(--kt-gold);
  font-weight: 850;
}

.kt-intensity input {
  width: 100%;
  accent-color: var(--kt-gold);
}

.kt-range-labels {
  color: var(--kt-muted);
  font-size: 0.72rem;
}

.kt-futures { margin-bottom: clamp(2.5rem, 6vw, 5rem); }

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

.kt-future-card {
  display: flex;
  min-height: 240px;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--kt-line);
  border-radius: 22px;
  background: var(--kt-paper);
  color: var(--kt-ink);
  padding: 1.3rem;
  text-align: left;
  cursor: pointer;
}

.kt-future-card > span,
.kt-result-eyebrow,
.kt-export-format {
  color: var(--kt-gold);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.kt-future-card strong {
  margin: 1rem 0 0.5rem;
  font-size: clamp(1.55rem, 3vw, 2.4rem);
  letter-spacing: -0.05em;
}

.kt-future-card small {
  color: var(--kt-muted);
  line-height: 1.45;
}

.kt-future-card em {
  margin-top: auto;
  padding-top: 1.2rem;
  color: var(--kt-green);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 800;
}

.kt-future-card.is-selected {
  outline: 3px solid var(--kt-gold);
  outline-offset: -3px;
  background: var(--kt-soft);
}

.kt-result-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 1rem;
  padding: clamp(1rem, 2vw, 1.3rem);
  border-radius: 30px;
  background: var(--kt-night);
  color: #f8f6ef;
}

.kt-result-copy,
.kt-export-card {
  padding: clamp(1.4rem, 4vw, 2.8rem);
  border-radius: 22px;
}

.kt-result-copy {
  background:
    radial-gradient(circle at 100% 0, rgba(240, 168, 18, 0.22), transparent 34%),
    #20201d;
}

.kt-result-copy h2 { margin-top: 1rem; }

.kt-result-copy > p {
  max-width: 68ch;
  color: #bdb9ae;
  line-height: 1.6;
}

.kt-change-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.kt-change-list span {
  padding: 0.85rem;
  border: 1px solid #3b3a35;
  border-radius: 14px;
  color: #d8d4c9;
  font-size: 0.78rem;
  line-height: 1.35;
}

.kt-change-list strong {
  display: block;
  margin-bottom: 0.3rem;
  color: #fff;
}

.kt-kx-map {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid #3b3a35;
}

.kt-kx-map > span {
  color: var(--kt-gold-bright);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.kt-kx-map p {
  color: #c1bdb3;
  line-height: 1.5;
}

.kt-kx-map a {
  color: #fff;
  font-weight: 800;
}

.kt-export-card {
  display: flex;
  flex-direction: column;
  background: #f5c85f;
  color: #17150f;
}

.kt-export-card strong {
  margin: 1.2rem 0 0.7rem;
  overflow-wrap: anywhere;
  font-size: clamp(1.4rem, 2.7vw, 2.2rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.kt-export-card p {
  margin: 0 0 2rem;
  color: #5e4c24;
  line-height: 1.45;
}

.kt-download {
  display: flex;
  width: 100%;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  border: 0;
  border-radius: 14px;
  background: #17150f;
  color: #fff;
  padding: 0 1.15rem;
  font: inherit;
  font-weight: 820;
  cursor: pointer;
}

.kt-download span { font-size: 1.5rem; }

.kt-export-card > small {
  margin-top: 0.85rem;
  color: #665225;
  line-height: 1.4;
}

.kt-editorial {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 1rem;
  margin-top: clamp(4rem, 9vw, 8rem);
}

.kt-editorial > * {
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--kt-line);
  border-radius: 28px;
  background: var(--kt-paper);
}

.kt-editorial h2 { margin: 1rem 0 1.6rem; }

.kt-editorial p {
  color: var(--kt-muted);
  line-height: 1.65;
}

.kt-editorial aside {
  background: var(--kt-soft);
}

.kt-editorial h3 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.04em;
}

.kt-editorial ul {
  display: grid;
  gap: 0.7rem;
  padding-left: 1.2rem;
  color: var(--kt-muted);
}

.kt-editorial a {
  color: var(--kt-green);
  font-weight: 800;
}

.kt-guide-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.kt-guide-grid a {
  display: flex;
  min-height: 220px;
  flex-direction: column;
  border: 1px solid var(--kt-line);
  border-radius: 22px;
  background: var(--kt-paper);
  color: var(--kt-ink);
  padding: 1.2rem;
  text-decoration: none;
}

.kt-guide-grid span {
  color: var(--kt-gold);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.kt-guide-grid strong {
  margin: auto 0 0.55rem;
  font-size: 1.25rem;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.kt-guide-grid small {
  color: var(--kt-muted);
  line-height: 1.4;
}

.kt-faq {
  max-width: 980px;
  margin: clamp(4rem, 9vw, 8rem) auto 0;
}

.kt-faq h2 { margin: 1rem 0 2rem; }

.kt-faq details {
  border-top: 1px solid var(--kt-line);
  padding: 1.2rem 0;
}

.kt-faq details:last-child { border-bottom: 1px solid var(--kt-line); }

.kt-faq summary {
  font-size: 1.08rem;
  font-weight: 780;
  cursor: pointer;
}

.kt-faq details p {
  max-width: 72ch;
  color: var(--kt-muted);
  line-height: 1.6;
}

[hidden] { display: none !important; }

@media (max-width: 900px) {
  .kt-hero,
  .kt-decision-head,
  .kt-sculptor,
  .kt-result-panel,
  .kt-editorial {
    grid-template-columns: 1fr;
  }

  .kt-hero { gap: 1.8rem; }
  .kt-hero h1 { font-size: clamp(4.2rem, 18vw, 8.5rem); }
  .kt-mode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kt-guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .kt-studio-topline { align-items: flex-start; flex-direction: column; }
  .kt-upload-stage { min-height: 470px; padding: 1.1rem; }
  .kt-dropzone { min-height: 260px; padding: 1.3rem; }
  .kt-demo-line { left: 1rem; right: 1rem; }
  .kt-filebar { align-items: flex-start; flex-direction: column; }
  .kt-filebar > div { max-width: 100%; }
  .kt-mode-grid,
  .kt-future-grid,
  .kt-guide-grid,
  .kt-change-list { grid-template-columns: 1fr; }
  .kt-mode-card { min-height: 175px; }
  .kt-future-card { min-height: 190px; }
  .kt-mode-tabs { display: grid; grid-template-columns: 1fr 1fr; }
  .kt-transport span:last-child { width: 100%; margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .kt-orbit span:nth-child(2) { animation: none; }
  .kt-dropzone,
  .kt-mode-card { transition: none; }
}