:root {
  --ink: #0b1a22;
  --ink-soft: #3f5056;
  --paper: #f5f1e8;
  --paper-deep: #ebe4d7;
  --white: #fffdf8;
  --line: rgba(11, 26, 34, 0.14);
  --coral: #e86f47;
  --coral-light: #ffad81;
  --mint: #69c8b8;
  --yellow: #efc85f;
  --navy: #0b1a22;
  --navy-light: #122b35;
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --shadow: 0 22px 80px rgba(11, 26, 34, 0.09);
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
audio {
  font: inherit;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  transform: translateY(-150%);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
}

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

.site-header {
  position: fixed;
  z-index: 100;
  top: 18px;
  left: 50%;
  display: flex;
  width: min(calc(100% - 32px), var(--max-width));
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px 0 22px;
  transform: translateX(-50%);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 18px;
  background: rgba(11, 26, 34, 0.76);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.12);
  color: #fff;
  backdrop-filter: blur(18px);
  transition:
    top 180ms ease,
    background 180ms ease;
}

.site-header.is-scrolled {
  top: 8px;
  background: rgba(11, 26, 34, 0.93);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 17px;
  font-weight: 740;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-flex;
  width: 31px;
  height: 31px;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border-radius: 50%;
  background: var(--coral);
}

.brand-mark i {
  display: block;
  width: 2px;
  border-radius: 2px;
  background: #fff;
}

.brand-mark i:nth-child(1),
.brand-mark i:nth-child(5) {
  height: 7px;
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(4) {
  height: 13px;
}

.brand-mark i:nth-child(3) {
  height: 19px;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 620;
  transition: color 150ms ease;
}

nav a:hover,
nav a:focus-visible {
  color: #fff;
}

.header-link {
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
}

.hero {
  position: relative;
  display: grid;
  min-height: 900px;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, 0.95fr);
  align-content: center;
  gap: 30px 70px;
  overflow: hidden;
  padding: 170px max(5vw, calc((100vw - var(--max-width)) / 2)) 70px;
  background: var(--navy);
  color: #fff;
}

.hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 54px 54px;
  content: "";
  mask-image: linear-gradient(to bottom, black 20%, transparent 92%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.3;
}

.hero-glow-one {
  top: -300px;
  right: -100px;
  width: 680px;
  height: 680px;
  background: radial-gradient(circle, rgba(105, 200, 184, 0.54), transparent 67%);
}

.hero-glow-two {
  bottom: -350px;
  left: -220px;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(232, 111, 71, 0.5), transparent 68%);
}

.hero-copy,
.cycle-visual,
.hero-metrics {
  position: relative;
  z-index: 2;
}

.eyebrow,
.kicker {
  margin: 0 0 20px;
  color: var(--coral-light);
  font-size: 12px;
  font-weight: 780;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow span {
  width: 32px;
  height: 1px;
  background: var(--coral-light);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 28px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(58px, 6.6vw, 96px);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

h1 em {
  color: var(--coral-light);
  font-weight: 400;
}

.hero-lead {
  max-width: 620px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 750;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--coral);
  color: #fff;
}

.button-primary:hover {
  background: #f0784e;
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
}

.button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.release-note {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.42);
  font-size: 12px;
}

.cycle-visual {
  width: min(100%, 530px);
  aspect-ratio: 1;
  justify-self: end;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.025);
  box-shadow:
    inset 0 0 80px rgba(105, 200, 184, 0.05),
    0 40px 120px rgba(0, 0, 0, 0.25);
}

.cycle-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle, black 10%, transparent 72%);
}

.orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.orbit::after {
  position: absolute;
  top: 7%;
  left: 20%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 18px var(--mint);
  content: "";
}

.orbit-outer {
  width: 78%;
  height: 78%;
  animation: spin 22s linear infinite;
}

.orbit-inner {
  width: 53%;
  height: 53%;
  border-style: dashed;
  animation: spin-reverse 16s linear infinite;
}

.cycle-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  width: 154px;
  height: 154px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(105, 200, 184, 0.2), rgba(232, 111, 71, 0.18));
  box-shadow: 0 0 60px rgba(105, 200, 184, 0.12);
  text-align: center;
}

.cycle-core strong {
  font-family: Georgia, serif;
  font-size: 27px;
  font-weight: 400;
}

.cycle-core small {
  max-width: 95px;
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 9px;
  line-height: 1.3;
  text-transform: uppercase;
}

.core-wave {
  width: 44px;
  height: 16px;
  margin-bottom: 7px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='16' viewBox='0 0 44 16'%3E%3Cpath d='M1 8h5l3-6 5 12 5-9 5 6 4-8 5 10 4-5h6' fill='none' stroke='%23ffad81' stroke-width='2'/%3E%3C/svg%3E") center/contain no-repeat;
}

.cycle-node {
  position: absolute;
  display: flex;
  min-width: 165px;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  background: rgba(12, 31, 39, 0.88);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(12px);
}

.cycle-node strong,
.cycle-node small {
  display: block;
}

.cycle-node strong {
  font-size: 13px;
}

.cycle-node small {
  color: rgba(255, 255, 255, 0.45);
  font-size: 10px;
}

.node-icon {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 9px;
  font-family: ui-monospace, monospace;
  font-size: 16px;
}

.node-generate {
  top: 15%;
  left: 3%;
}

.node-generate .node-icon {
  background: rgba(232, 111, 71, 0.16);
  color: var(--coral-light);
}

.node-understand {
  right: 2%;
  bottom: 15%;
}

.node-understand .node-icon {
  background: rgba(105, 200, 184, 0.14);
  color: var(--mint);
}

.orbit-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.dot-one {
  top: 23%;
  right: 22%;
  background: var(--yellow);
  box-shadow: 0 0 15px var(--yellow);
}

.dot-two {
  bottom: 25%;
  left: 20%;
  background: var(--coral-light);
  box-shadow: 0 0 15px var(--coral-light);
}

.hero-metrics {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-metrics div {
  display: flex;
  align-items: baseline;
  gap: 13px;
  padding: 25px 30px 0 0;
}

.hero-metrics div + div {
  padding-left: 30px;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-metrics strong {
  color: #fff;
  font-family: Georgia, serif;
  font-size: 22px;
  font-weight: 400;
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.42);
  font-size: 12px;
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 130px 0;
}

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

.section-heading .kicker,
.cta .kicker {
  color: var(--coral);
}

.section-heading h2,
.cta h2 {
  margin-bottom: 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(42px, 5vw, 68px);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.section-heading > p:last-child {
  max-width: 670px;
  color: var(--ink-soft);
  font-size: 18px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 60px;
}

.capability-card {
  position: relative;
  overflow: hidden;
  min-height: 445px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.capability-card::after {
  position: absolute;
  right: -80px;
  bottom: -110px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  content: "";
  opacity: 0.13;
}

.capability-generate {
  background: var(--white);
}

.capability-generate::after {
  background: var(--coral);
}

.capability-understand {
  background: var(--navy);
  color: #fff;
}

.capability-understand::after {
  background: var(--mint);
}

.capability-index {
  position: absolute;
  top: 34px;
  right: 38px;
  color: rgba(11, 26, 34, 0.25);
  font-family: Georgia, serif;
  font-size: 18px;
}

.capability-understand .capability-index {
  color: rgba(255, 255, 255, 0.3);
}

.capability-icon {
  display: grid;
  width: 75px;
  height: 75px;
  margin-bottom: 42px;
  place-items: center;
  border-radius: 21px;
  background: var(--paper-deep);
  color: var(--coral);
  font-family: ui-monospace, monospace;
  font-size: 16px;
  font-weight: 700;
}

.capability-understand .capability-icon {
  background: rgba(105, 200, 184, 0.12);
  color: var(--mint);
}

.capability-card h3 {
  margin-bottom: 14px;
  font-family: Georgia, serif;
  font-size: 31px;
  font-weight: 400;
  letter-spacing: -0.025em;
}

.capability-card p {
  max-width: 470px;
  color: var(--ink-soft);
}

.capability-understand p {
  color: rgba(255, 255, 255, 0.58);
}

.capability-card ul {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.capability-card li {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-soft);
  font-size: 11px;
}

.capability-understand li {
  border-color: rgba(255, 255, 255, 0.11);
  color: rgba(255, 255, 255, 0.58);
}

.generation {
  max-width: none;
  padding-right: max(5vw, calc((100vw - var(--max-width)) / 2));
  padding-left: max(5vw, calc((100vw - var(--max-width)) / 2));
  background: var(--paper-deep);
}

.section-heading-row {
  display: flex;
  max-width: var(--max-width);
  align-items: end;
  justify-content: space-between;
  gap: 60px;
}

.section-heading-row > p {
  max-width: 450px;
  margin-bottom: 12px;
}

.filters {
  display: flex;
  gap: 7px;
  margin: 40px 0 25px;
}

.filter {
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  transition: all 140ms ease;
}

.filter:hover,
.filter:focus-visible,
.filter.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.demo-card {
  display: grid;
  min-height: 455px;
  grid-template-rows: auto 1fr auto;
  padding: 28px;
  border: 1px solid rgba(11, 26, 34, 0.12);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.8);
  box-shadow: 0 12px 42px rgba(11, 26, 34, 0.055);
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

.demo-card:hover {
  transform: translateY(-3px);
}

.demo-card.is-hidden {
  display: none;
}

.demo-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.language-tag,
.type-tag {
  display: inline-block;
  padding: 5px 8px;
  border-radius: 7px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.language-tag {
  margin-right: 5px;
  background: var(--ink);
  color: #fff;
}

.type-tag {
  background: rgba(232, 111, 71, 0.13);
  color: #b74625;
}

.sample-number {
  color: rgba(11, 26, 34, 0.25);
  font-family: Georgia, serif;
  font-size: 16px;
}

.demo-copy {
  padding: 30px 0 24px;
}

.label {
  margin-bottom: 8px;
  color: rgba(11, 26, 34, 0.45);
  font-size: 10px;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.demo-copy h3 {
  min-height: 72px;
  margin-bottom: 24px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

details {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

summary {
  position: relative;
  padding: 12px 28px 12px 0;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 12px;
  font-weight: 720;
  list-style: none;
}

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

summary::after {
  position: absolute;
  top: 10px;
  right: 3px;
  content: "+";
  font-size: 17px;
  font-weight: 400;
}

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

details p {
  margin-bottom: 14px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
}

.audio-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.audio-comparison label {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
}

.audio-comparison label > span {
  display: block;
  margin-bottom: 8px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 750;
}

.audio-comparison .baseline-audio {
  border-color: rgba(239, 200, 95, 0.42);
  background: rgba(239, 200, 95, 0.09);
}

.audio-comparison .baseline-audio > span {
  color: #8a6812;
}

.audio-comparison .sft-audio {
  border-color: rgba(105, 200, 184, 0.42);
  background: rgba(105, 200, 184, 0.09);
}

.audio-comparison .sft-audio > span {
  color: #277c70;
}

.audio-comparison .model-audio {
  border-color: rgba(232, 111, 71, 0.3);
  background: rgba(232, 111, 71, 0.065);
}

.audio-comparison .model-audio > span {
  color: #b74625;
}

audio {
  display: block;
  width: 100%;
  height: 32px;
}

.dubbing {
  max-width: none;
  padding-right: max(5vw, calc((100vw - var(--max-width)) / 2));
  padding-left: max(5vw, calc((100vw - var(--max-width)) / 2));
  background: var(--white);
}

.dubbing .section-heading-row {
  margin-bottom: 48px;
}

.dubbing .section-heading-row > p {
  max-width: 490px;
}

.dubbing-grid {
  display: grid;
  max-width: var(--max-width);
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin: 0 auto;
}

.dubbing-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  box-shadow: 0 14px 44px rgba(11, 26, 34, 0.07);
  transition: transform 180ms ease;
}

.dubbing-card:hover {
  transform: translateY(-3px);
}

.dubbing-card-header {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  padding: 15px 22px;
}

.dubbing-video-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 0 10px;
}

.dubbing-video-item {
  min-width: 0;
  margin: 0;
}

.dubbing-video-item figcaption {
  padding: 0 0 7px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 750;
}

.dubbing-video-frame {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 5px;
  background: var(--ink);
}

.dubbing-video-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.dubbing-copy {
  padding: 23px 25px 26px;
}

.dubbing-copy h3 {
  margin: 0 0 20px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 23px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.dubbing-copy details {
  margin-bottom: 18px;
}

.dubbing-reference {
  display: block;
  padding: 13px 14px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
}

.dubbing-reference > span {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 750;
}

.understanding {
  max-width: none;
  padding-right: max(5vw, calc((100vw - var(--max-width)) / 2));
  padding-left: max(5vw, calc((100vw - var(--max-width)) / 2));
  background: var(--navy);
  color: #fff;
}

.understanding-intro {
  display: grid;
  max-width: var(--max-width);
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
  align-items: center;
  gap: 100px;
  margin: 0 auto;
}

.understanding .section-heading h2 {
  color: #fff;
}

.understanding .section-heading > p:last-of-type {
  color: rgba(255, 255, 255, 0.58);
}

.field-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 30px 0;
}

.field-list span {
  padding: 6px 9px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 7px;
  color: rgba(255, 255, 255, 0.6);
  font-family: ui-monospace, monospace;
  font-size: 10px;
}

.text-link {
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255, 173, 129, 0.55);
  color: var(--coral-light);
  font-size: 13px;
  font-weight: 700;
}

.schema-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  background: #071218;
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.28);
}

.schema-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.schema-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.schema-bar span:first-child {
  background: var(--coral);
}

.schema-bar span:nth-child(2) {
  background: var(--yellow);
}

.schema-bar span:nth-child(3) {
  background: var(--mint);
}

.schema-bar small {
  margin-left: auto;
  color: rgba(255, 255, 255, 0.35);
  font-family: ui-monospace, monospace;
  font-size: 9px;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 32px 36px 38px;
  color: rgba(255, 255, 255, 0.6);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  line-height: 1.85;
}

code b {
  color: var(--mint);
  font-weight: 500;
}

code i {
  color: var(--coral-light);
  font-style: normal;
}

.understanding-cases {
  max-width: var(--max-width);
  margin: 100px auto 0;
  padding-top: 72px;
  border-top: 1px solid rgba(255, 255, 255, 0.11);
}

.understanding-cases-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 30px;
}

.understanding-cases-heading .kicker {
  color: var(--coral-light);
}

.understanding-cases-heading h3 {
  max-width: 650px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.understanding-cases-heading > p {
  max-width: 390px;
  margin-bottom: 7px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

.understanding-case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.understanding-case {
  min-width: 0;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.045);
}

.understanding-case-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.understanding-case .language-tag {
  background: var(--mint);
  color: var(--navy);
}

.understanding-case .type-tag {
  background: rgba(255, 173, 129, 0.14);
  color: var(--coral-light);
}

.understanding-case .sample-number {
  color: rgba(255, 255, 255, 0.25);
}

.understanding-case audio {
  height: 38px;
  margin-bottom: 28px;
}

.understanding-transcript {
  min-height: 112px;
  padding: 22px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.understanding-transcript .label {
  color: rgba(255, 255, 255, 0.38);
}

.understanding-transcript h4 {
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-weight: 400;
  line-height: 1.4;
}

.prediction-title {
  margin-bottom: 9px;
  color: var(--mint);
  font-size: 10px;
  font-weight: 780;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.prediction-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.09);
}

.prediction-list div {
  min-width: 0;
  padding: 15px 16px;
  background: #0d222b;
}

.prediction-list span,
.prediction-list strong {
  display: block;
}

.prediction-list span {
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.38);
  font-size: 9px;
  font-weight: 760;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.prediction-list strong {
  color: rgba(255, 255, 255, 0.82);
  font-size: 12px;
  font-weight: 570;
  line-height: 1.45;
}

.method .section-heading {
  margin: 0 auto;
  text-align: center;
}

.method .section-heading > p:last-child {
  margin-right: auto;
  margin-left: auto;
}

.method-flow {
  display: grid;
  grid-template-columns: 1fr 110px 1.25fr 110px 1fr;
  align-items: center;
  gap: 18px;
  margin-top: 65px;
}

.flow-input,
.flow-output {
  display: grid;
  gap: 8px;
}

.flow-input span,
.flow-output span {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
  text-align: center;
}

.flow-model {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 30px 70px rgba(11, 26, 34, 0.2);
  color: #fff;
  text-align: center;
}

.flow-model span,
.flow-model small {
  color: rgba(255, 255, 255, 0.42);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.flow-model strong {
  margin: 5px 0;
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 400;
}

.flow-arrow,
.flow-arrows {
  color: var(--ink-soft);
  font-size: 9px;
  text-align: center;
}

.flow-arrow i,
.flow-arrows i {
  position: relative;
  display: block;
  height: 1px;
  margin: 8px 0;
  background: var(--ink);
}

.flow-arrow i::after,
.flow-arrows div:first-child i::after {
  position: absolute;
  top: -3px;
  right: 0;
  width: 6px;
  height: 6px;
  transform: rotate(45deg);
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  content: "";
}

.flow-arrows div:last-child i::after {
  position: absolute;
  top: -3px;
  left: 0;
  width: 6px;
  height: 6px;
  transform: rotate(-135deg);
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  content: "";
}

.flow-arrows div + div {
  margin-top: 32px;
}

.cta {
  max-width: var(--max-width);
  margin: 0 auto 70px;
  padding: 90px 70px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 90% 15%, rgba(105, 200, 184, 0.2), transparent 27%),
    radial-gradient(circle at 10% 100%, rgba(255, 173, 129, 0.22), transparent 33%),
    var(--coral);
  color: #fff;
  text-align: center;
}

.cta .kicker {
  color: rgba(255, 255, 255, 0.75);
}

.cta h2 {
  margin-bottom: 14px;
}

.cta > p:not(.kicker) {
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.72);
}

.cta .hero-actions {
  justify-content: center;
}

.button-light {
  background: var(--white);
  color: var(--ink);
}

.button-outline {
  border-color: rgba(255, 255, 255, 0.38);
  color: #fff;
}

footer {
  display: grid;
  min-height: 125px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 30px;
  padding: 30px max(5vw, calc((100vw - var(--max-width)) / 2));
  background: var(--navy);
  color: rgba(255, 255, 255, 0.45);
  font-size: 11px;
}

footer p {
  margin: 0;
}

footer p:last-child {
  text-align: right;
}

.footer-brand {
  color: #fff;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 650ms ease,
    transform 650ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes spin-reverse {
  to {
    transform: translate(-50%, -50%) rotate(-360deg);
  }
}

@media (max-width: 1240px) {
  .section,
  .cta {
    width: calc(100% - 48px);
  }

  .generation,
  .dubbing,
  .understanding {
    width: 100%;
  }
}

@media (max-width: 980px) {
  nav {
    display: none;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    padding-top: 150px;
  }

  .hero-copy {
    max-width: 780px;
  }

  .cycle-visual {
    width: min(82vw, 520px);
    justify-self: center;
  }

  .capability-grid,
  .understanding-intro {
    grid-template-columns: 1fr;
  }

  .understanding-intro {
    gap: 55px;
  }

  .understanding-cases-heading {
    display: block;
  }

  .understanding-cases-heading > p {
    margin-top: 16px;
  }

  .schema-card {
    max-width: 680px;
  }

  .method-flow {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin-right: auto;
    margin-left: auto;
  }

  .flow-arrow,
  .flow-arrows {
    display: none;
  }

  .flow-model {
    width: 260px;
    min-height: 260px;
    justify-self: center;
  }
}

@media (max-width: 720px) {
  .site-header {
    top: 8px;
    width: calc(100% - 16px);
    min-height: 56px;
    padding: 0 10px 0 15px;
    border-radius: 14px;
  }

  .header-link {
    padding: 7px 10px;
    font-size: 11px;
  }

  .brand {
    font-size: 15px;
  }

  .brand-mark {
    width: 27px;
    height: 27px;
  }

  .hero {
    gap: 55px;
    padding: 125px 20px 50px;
  }

  h1 {
    font-size: clamp(46px, 15vw, 68px);
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    padding: 15px 0;
  }

  .hero-metrics div + div {
    padding-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 0;
  }

  .cycle-node {
    min-width: 142px;
    padding: 10px;
  }

  .node-generate {
    left: 0;
  }

  .node-understand {
    right: 0;
  }

  .section {
    width: calc(100% - 36px);
    padding: 90px 0;
  }

  .generation,
  .dubbing,
  .understanding {
    width: 100%;
    padding-right: 18px;
    padding-left: 18px;
  }

  .section-heading h2,
  .cta h2 {
    font-size: 42px;
  }

  .section-heading-row {
    display: block;
  }

  .capability-grid,
  .demo-grid,
  .dubbing-grid,
  .understanding-case-grid {
    grid-template-columns: 1fr;
  }

  .capability-card {
    min-height: auto;
    padding: 30px;
  }

  .demo-card {
    min-height: 0;
    padding: 22px;
  }

  .dubbing-grid {
    gap: 16px;
  }

  .dubbing-card-header {
    padding: 13px 17px;
  }

  .dubbing-copy {
    padding: 20px 18px 22px;
  }

  .dubbing-copy h3 {
    font-size: 21px;
  }

  .dubbing-video-pair {
    padding: 0 8px;
    gap: 6px;
  }

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

  .understanding-intro {
    grid-template-columns: minmax(0, 1fr);
  }

  .understanding-cases {
    margin-top: 70px;
    padding-top: 55px;
  }

  .understanding-case {
    padding: 22px;
  }

  .understanding-transcript {
    min-height: 0;
  }

  .prediction-list {
    grid-template-columns: 1fr;
  }

  pre {
    padding: 24px 18px;
    font-size: 11px;
  }

  .cta {
    width: calc(100% - 36px);
    margin-bottom: 36px;
    padding: 65px 24px;
  }

  footer {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 45px 20px;
    text-align: center;
  }

  footer p:last-child {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}