:root {
  --font-sans: Inter, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Songti SC", STSong, "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --type-display-size: clamp(52px, 7.8vw, 112px);
  --type-h1-size: clamp(44px, 5.8vw, 80px);
  --type-h2-size: clamp(34px, 4vw, 56px);
  --type-h3-size: clamp(28px, 2.8vw, 40px);
  --type-h4-size: clamp(22px, 1.95vw, 28px);
  --type-h5-size: clamp(18px, 1.4vw, 20px);
  --type-subtitle-size: clamp(20px, 1.81vw, 26px);
  --type-lead-size: clamp(19px, 1.7vw, 24px);
  --type-body-lg-size: clamp(17px, 1.25vw, 18px);
  --type-body-size: 16px;
  --type-body-sm-size: 14px;
  --type-caption-size: 12px;
  --type-micro-size: 10px;
  --type-brand-skew: -6deg;
  --type-brand-cut-angle: -35deg;
  --type-brand-outline: 1.4px;

  --type-display-leading: .84;
  --type-h1-leading: .92;
  --type-h2-leading: 1;
  --type-h3-leading: 1.15;
  --type-h4-leading: 1.3;
  --type-h5-leading: 1.4;
  --type-copy-leading: 1.75;
}

.ss-type-display,
.ss-type-h1,
.ss-type-h2,
.ss-type-h3,
.ss-type-h4,
.ss-type-h5,
.ss-type-subtitle,
.ss-type-body-lg,
.ss-type-body,
.ss-type-body-sm,
.ss-type-caption,
.ss-type-micro {
  font-family: var(--font-sans);
}

.ss-type-display {
  font-size: var(--type-display-size);
  font-weight: 900;
  line-height: var(--type-display-leading);
  letter-spacing: -.065em;
}

.ss-type-h1 {
  font-size: var(--type-h1-size);
  font-weight: 900;
  line-height: var(--type-h1-leading);
  letter-spacing: -.05em;
}

.ss-type-h2 {
  font-size: var(--type-h2-size);
  font-weight: 800;
  line-height: var(--type-h2-leading);
  letter-spacing: -.035em;
}

.ss-type-h3 {
  font-size: var(--type-h3-size);
  font-weight: 750;
  line-height: var(--type-h3-leading);
  letter-spacing: -.018em;
}

.ss-type-h4 {
  font-size: var(--type-h4-size);
  font-weight: 700;
  line-height: var(--type-h4-leading);
  letter-spacing: -.005em;
}

.ss-type-h5 {
  font-size: var(--type-h5-size);
  font-weight: 700;
  line-height: var(--type-h5-leading);
  letter-spacing: .01em;
}

.ss-type-subtitle {
  font-size: var(--type-subtitle-size);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: .005em;
}

.ss-type-lead,
.ss-type-quote {
  font-family: var(--font-serif);
  font-size: var(--type-lead-size);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: .02em;
}

.ss-type-quote {
  font-size: clamp(24px, 2.3vw, 36px);
  line-height: 1.55;
}

.ss-type-body-lg {
  font-size: var(--type-body-lg-size);
  font-weight: 400;
  line-height: 1.8;
}

.ss-type-body {
  font-size: var(--type-body-size);
  font-weight: 400;
  line-height: var(--type-copy-leading);
}

.ss-type-body-sm {
  font-size: var(--type-body-sm-size);
  font-weight: 400;
  line-height: 1.7;
}

.ss-type-caption {
  font-size: var(--type-caption-size);
  font-weight: 750;
  line-height: 1.4;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.ss-type-micro {
  font-size: var(--type-micro-size);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.ss-type-data {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .04em;
}

.ss-brand-chapter,
.ss-brand-module {
  position: relative;
}

.ss-brand-chapter {
  padding-left: .42em;
}

.ss-brand-chapter::before {
  content: "";
  position: absolute;
  left: .08em;
  top: .05em;
  width: .075em;
  height: .84em;
  background: var(--accent-a);
  transform: skewX(var(--type-brand-cut-angle));
  transform-origin: center;
  box-shadow: .13em .1em 0 color-mix(in srgb, var(--accent-a) 18%, transparent);
}

.ss-brand-module::before {
  content: "//";
  display: inline-block;
  margin-right: .42em;
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: .46em;
  font-weight: 700;
  letter-spacing: -.18em;
  transform: translateY(-.22em) skewX(var(--type-brand-cut-angle));
}

.type-dna {
  display: grid;
  grid-template-columns: minmax(320px, .9fr) minmax(0, 1.1fr);
  min-height: 420px;
  margin-bottom: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 22% 16%, var(--accent-glow), transparent 36%),
    linear-gradient(135deg, rgba(255, 255, 255, .075), rgba(255, 255, 255, .015));
}

.type-dna-visual {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, .03) 1px, transparent 1px),
    #070a09;
  background-size: 64px 64px;
}

.type-dna-triangle {
  position: absolute;
  left: 50%;
  top: 42%;
  width: min(430px, 88%);
  color: var(--accent-a);
  opacity: .34;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 0 28px var(--accent-glow));
}

.type-dna-triangle.logo-triangle {
  color: var(--accent-a);
}

.type-dna-wordmark {
  position: absolute;
  left: 50%;
  bottom: 42px;
  width: min(420px, 80%);
  color: #f7f8ee;
  transform: translateX(-50%);
}

.type-dna-wordmark.wordmark-horizontal-ai {
  color: #f7f8ee;
}

.type-dna-angle {
  position: absolute;
  left: 28px;
  top: 24px;
  color: rgba(247, 248, 238, .48);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.type-dna-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 5vw, 64px);
}

.type-dna-copy > small {
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: var(--type-micro-size);
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.type-dna-copy h3 {
  max-width: 12em;
  margin: 28px 0 0;
  font-size: clamp(30px, 3vw, 46px);
  font-weight: 850;
  line-height: 1.04;
  letter-spacing: -.04em;
}

.type-dna-copy > p {
  max-width: 42em;
  margin-top: 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.type-dna-rules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 32px;
}

.type-dna-rule {
  min-height: 92px;
  padding: 15px;
  border: 1px solid var(--line);
}

.type-dna-rule b {
  display: block;
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.type-dna-rule span {
  display: block;
  margin-top: 8px;
  color: var(--muted-strong);
  font-size: 12px;
  line-height: 1.5;
}

.type-directions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.type-direction-card {
  position: relative;
  min-height: 330px;
  padding: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, .065), rgba(255, 255, 255, .014));
}

.type-direction-card.selected {
  border-color: color-mix(in srgb, var(--accent-a) 66%, var(--line));
  box-shadow: inset 0 0 60px color-mix(in srgb, var(--accent-a) 6%, transparent);
}

.type-direction-card.selected::after {
  content: "SELECTED";
  position: absolute;
  right: 14px;
  top: 14px;
  padding: 6px 8px;
  color: #070909;
  background: var(--accent-a);
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .14em;
}

.type-direction-card > small {
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.type-direction-sample {
  min-height: 148px;
  margin-top: 36px;
  color: var(--text);
}

.type-direction-sample.precision {
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 800;
  line-height: .86;
  letter-spacing: -.055em;
  text-transform: uppercase;
}

.type-direction-sample.precision span:last-child {
  margin-left: .78em;
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: .26em;
  line-height: 1;
  letter-spacing: .2em;
}

.type-direction-sample.venom {
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: clamp(32px, 3.7vw, 54px);
  font-weight: 900;
  line-height: .8;
  letter-spacing: -.07em;
  transform: skewX(var(--type-brand-skew));
  transform-origin: left center;
}

.type-direction-sample.venom .outline {
  margin-left: .34em;
  color: var(--text);
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1px var(--text);
  text-shadow: .08em 0 0 rgba(var(--accent-a-rgb), .3);
}

.type-direction-sample.serpent {
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: clamp(36px, 4.2vw, 62px);
  font-weight: 750;
  line-height: .72;
  letter-spacing: -.09em;
}

.type-direction-sample.serpent span:nth-child(2) {
  margin-left: .62em;
  color: var(--accent-a);
}

.type-direction-sample.serpent span:nth-child(3) {
  align-self: flex-end;
  margin-top: .7em;
  color: var(--muted);
  font-size: .18em;
  letter-spacing: .12em;
}

.type-direction-card h3 {
  margin: 18px 0 0;
  font-size: 16px;
  letter-spacing: .02em;
}

.type-direction-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.type-direction-decision {
  display: grid;
  grid-template-columns: minmax(180px, .4fr) minmax(0, 1.6fr);
  gap: 26px;
  align-items: center;
  min-height: 96px;
  margin-bottom: 18px;
  padding: 20px 24px;
  border: 1px solid color-mix(in srgb, var(--accent-a) 42%, var(--line));
  background: color-mix(in srgb, var(--accent-a) 7%, transparent);
}

.type-direction-decision strong {
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
}

.type-direction-decision p {
  color: var(--muted-strong);
  font-size: 13px;
  line-height: 1.65;
}

.type-system-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.type-foundation-card {
  position: relative;
  min-height: 300px;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--accent-a) 14%, transparent), transparent 45%),
    linear-gradient(145deg, rgba(255, 255, 255, .075), rgba(255, 255, 255, .018));
}

.type-foundation-card::after {
  content: attr(data-index);
  position: absolute;
  right: 16px;
  bottom: -22px;
  color: color-mix(in srgb, var(--accent-a) 18%, transparent);
  font-family: var(--font-mono);
  font-size: 110px;
  font-weight: 800;
  line-height: 1;
}

.type-foundation-card small,
.type-specimen-kicker,
.type-scale-header small,
.type-composition small {
  display: block;
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: var(--type-micro-size);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.type-foundation-card h3 {
  position: relative;
  z-index: 1;
  margin: 32px 0 0;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.12;
}

.type-foundation-card p {
  position: relative;
  z-index: 1;
  max-width: 31em;
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.type-foundation-card .type-alphabet {
  position: relative;
  z-index: 1;
  margin-top: 28px;
  color: var(--muted-strong);
  font-size: 17px;
  line-height: 1.65;
}

.type-foundation-card.serif h3,
.type-foundation-card.serif .type-alphabet {
  font-family: var(--font-serif);
  font-weight: 600;
}

.type-foundation-card.mono h3,
.type-foundation-card.mono .type-alphabet {
  font-family: var(--font-mono);
}

.type-specimen-hero {
  position: relative;
  min-height: 500px;
  margin-top: 18px;
  padding: clamp(28px, 5vw, 68px);
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, .03) 1px, transparent 1px),
    radial-gradient(circle at 76% 22%, var(--accent-glow), transparent 29%),
    #070a09;
  background-size: 80px 80px, 80px 80px, auto, auto;
  color: #f7f8ee;
}

.type-specimen-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(125deg, transparent 0 64%, color-mix(in srgb, var(--accent-a) 14%, transparent) 64.1% 64.35%, transparent 64.45%),
    linear-gradient(125deg, transparent 0 70%, color-mix(in srgb, var(--accent-a) 8%, transparent) 70.1% 70.3%, transparent 70.4%);
}

.type-specimen-kicker,
.type-specimen-display,
.type-specimen-subtitle,
.type-specimen-meta {
  position: relative;
  z-index: 1;
}

.type-specimen-display {
  width: fit-content;
  max-width: 9em;
  margin-top: clamp(46px, 8vw, 96px);
  transform: skewX(var(--type-brand-skew));
  transform-origin: left center;
}

.type-specimen-display::before {
  content: "";
  position: absolute;
  left: -.24em;
  top: .02em;
  width: .035em;
  height: 1.7em;
  background: var(--accent-a);
  transform: skewX(var(--type-brand-cut-angle));
  box-shadow:
    .095em .08em 0 color-mix(in srgb, var(--accent-b) 66%, transparent),
    .19em .16em 0 color-mix(in srgb, var(--accent-c) 26%, transparent);
}

.type-specimen-line {
  display: block;
  white-space: nowrap;
}

.type-specimen-line.outline {
  margin-left: .42em;
  color: #f7f8ee;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: var(--type-brand-outline) rgba(247, 248, 238, .82);
  text-shadow:
    .075em 0 0 rgba(var(--accent-a-rgb), .28),
    .15em 0 0 rgba(var(--accent-c-rgb), .1);
}

.type-specimen-triangle {
  position: absolute;
  z-index: 0;
  right: -58px;
  bottom: -68px;
  width: min(650px, 54%);
  color: var(--accent-a);
  opacity: .12;
  filter: drop-shadow(0 0 38px var(--accent-glow));
}

.type-specimen-triangle.logo-triangle {
  color: var(--accent-a);
}

.type-specimen-wordmark {
  position: absolute;
  z-index: 1;
  right: clamp(28px, 5vw, 68px);
  top: clamp(28px, 5vw, 54px);
  width: clamp(150px, 20vw, 280px);
  color: rgba(247, 248, 238, .2);
}

.type-specimen-wordmark.wordmark-horizontal-ai {
  color: rgba(247, 248, 238, .2);
}

.type-specimen-subtitle {
  max-width: 34em;
  margin-top: 26px;
  color: rgba(247, 248, 238, .72);
}

.type-specimen-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 48px;
  color: rgba(247, 248, 238, .5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.type-scale-row[data-level="display"],
.type-scale-row[data-level="h1"] {
  background:
    linear-gradient(100deg, color-mix(in srgb, var(--accent-a) 5%, transparent), transparent 44%);
}

.type-scale {
  margin-top: 18px;
  border: 1px solid var(--line);
}

.type-scale-header,
.type-scale-row {
  display: grid;
  grid-template-columns: minmax(150px, .7fr) minmax(260px, 1.7fr) minmax(250px, 1fr);
  gap: 26px;
  align-items: center;
  padding: 22px 24px;
}

.type-scale-header {
  min-height: 78px;
  background: color-mix(in srgb, var(--accent-a) 10%, transparent);
}

.type-scale-header strong {
  font-size: 17px;
}

.type-scale-header p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.type-scale-row {
  min-height: 126px;
  border-top: 1px solid var(--line);
}

.type-token b,
.type-token code {
  display: block;
}

.type-token b {
  font-size: 14px;
}

.type-token code {
  margin-top: 8px;
  color: var(--accent-a);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
}

.type-scale-sample {
  min-width: 0;
  overflow-wrap: anywhere;
}

.type-scale-spec {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 14px;
  margin: 0;
}

.type-scale-spec div {
  min-width: 0;
}

.type-scale-spec dt {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.type-scale-spec dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
}

.type-compositions {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  margin-top: 18px;
}

.type-composition {
  min-height: 430px;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .018));
}

.type-composition.editorial blockquote {
  max-width: 16em;
  margin: 54px 0 0;
}

.type-composition.editorial p {
  max-width: 42em;
  margin-top: 28px;
  color: var(--muted);
}

.type-composition.interface {
  display: flex;
  flex-direction: column;
}

.type-interface-panel {
  margin-top: 40px;
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .16);
}

.type-interface-panel h3 {
  margin: 22px 0 0;
}

.type-interface-panel p {
  margin-top: 12px;
  color: var(--muted);
}

.type-interface-data {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--accent-a);
}

.type-rules {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.type-rule {
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line);
}

.type-rule b {
  display: block;
  font-size: 14px;
}

.type-rule p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.type-download {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  margin-top: 18px;
  padding: 0 16px;
  border: 1px solid var(--accent-a);
  color: var(--accent-a);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .08em;
  text-decoration: none;
}

body[data-mode="light"] .type-foundation-card,
body[data-mode="light"] .type-direction-card,
body[data-mode="light"] .type-composition {
  background:
    radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--accent-a) 12%, transparent), transparent 45%),
    linear-gradient(145deg, rgba(255, 255, 255, .86), rgba(7, 9, 9, .025));
}

body[data-mode="light"] .type-specimen-hero {
  border-color: rgba(7, 9, 9, .2);
}

body[data-mode="light"] .type-interface-panel {
  background: rgba(7, 9, 9, .035);
}

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

  .type-dna-visual {
    min-height: 360px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .type-direction-card:last-child {
    grid-column: 1 / -1;
  }

  .type-system-overview,
  .type-rules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .type-foundation-card:last-child {
    grid-column: 1 / -1;
  }

  .type-scale-header,
  .type-scale-row {
    grid-template-columns: 150px minmax(0, 1fr);
  }

  .type-scale-header p,
  .type-scale-spec {
    grid-column: 1 / -1;
  }

  .type-compositions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .type-dna-visual {
    min-height: 310px;
  }

  .type-dna-copy {
    padding: 28px 22px;
  }

  .type-dna-rules,
  .type-directions,
  .type-direction-decision {
    grid-template-columns: 1fr;
  }

  .type-direction-card:last-child {
    grid-column: auto;
  }

  .type-direction-decision {
    gap: 12px;
  }

  .type-system-overview,
  .type-rules {
    grid-template-columns: 1fr;
  }

  .type-foundation-card:last-child {
    grid-column: auto;
  }

  .type-specimen-hero {
    min-height: 470px;
  }

  .type-specimen-wordmark {
    width: 132px;
  }

  .type-specimen-triangle {
    right: -60px;
    width: 78%;
  }

  .type-specimen-display {
    margin-top: 78px;
  }

  .type-specimen-meta {
    gap: 8px 16px;
    font-size: 9px;
  }

  .type-scale-header,
  .type-scale-row {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px;
  }

  .type-scale-header p,
  .type-scale-spec {
    grid-column: auto;
  }

  .type-scale-row {
    min-height: 0;
  }

  .type-scale-spec {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}