:root {
  --background: #f6f4ef;
  --foreground: #18211e;
  --muted: #5b665f;
  --line: #d8d1c5;
  --paper: #fffdf8;
  --ink: #203029;
  --teal: #126b66;
  --coral: #c75a45;
  --gold: #b8892f;
  --blue: #325f8f;
  --green: #4f7d4d;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(18, 107, 102, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(18, 107, 102, 0.04) 1px, transparent 1px),
    var(--background);
  background-size: 42px 42px;
  color: var(--foreground);
  font-family: Arial, Helvetica, sans-serif;
}

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

.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 12px;
  border-bottom: 1px solid rgba(24, 33, 30, 0.12);
  background: rgba(246, 244, 239, 0.88);
  backdrop-filter: blur(18px);
}

.top-nav a,
.hero-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(24, 33, 30, 0.14);
  border-radius: 6px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.top-nav a:hover,
.hero-actions a:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.hero {
  min-height: calc(100vh - 63px);
  display: grid;
  align-items: center;
  padding: 64px 24px 46px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 80% 22%, rgba(199, 90, 69, 0.16), transparent 32%),
    linear-gradient(135deg, rgba(255, 253, 248, 0.78), rgba(246, 244, 239, 0.3));
}

.hero-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.kicker,
.section-heading span {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(56px, 10vw, 122px);
  line-height: 0.92;
  letter-spacing: 0;
}

.subtitle {
  max-width: 860px;
  margin: 26px 0 0;
  color: #31423b;
  font-size: clamp(22px, 3vw, 38px);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-actions a:first-child {
  border-color: var(--teal);
  background: var(--teal);
  color: #ffffff;
}

.hero-actions a:first-child:hover {
  color: #ffffff;
  filter: brightness(0.94);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 860px;
  margin-top: 58px;
}

.hero-stats div,
.abstract-card,
.benchmark-grid article,
.schema-grid article,
.highlight-grid article,
.ablation,
.sample-player {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.82);
}

.hero-stats div {
  padding: 20px;
}

.hero-stats strong {
  display: block;
  color: var(--teal);
  font-size: 32px;
  line-height: 1;
}

.hero-stats span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 82px 0;
}

.section + .section {
  border-top: 1px solid rgba(24, 33, 30, 0.1);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(160px, 0.28fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-bottom: 30px;
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1;
  letter-spacing: 0;
}

.abstract-card {
  padding: 30px;
  column-count: 2;
  column-gap: 34px;
}

.abstract-card p {
  break-inside: avoid;
  margin: 0 0 18px;
  color: #33443d;
  font-size: 17px;
  line-height: 1.72;
}

.pipeline-section {
  width: min(1260px, calc(100% - 32px));
}

.figure-card {
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.86);
  box-shadow: 0 18px 36px rgba(34, 39, 34, 0.06);
}

.figure-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.wide-figure {
  overflow-x: auto;
}

.wide-figure img {
  min-width: 980px;
}

.bench-figure {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}

.figure-card figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.pipeline-card {
  position: relative;
  min-height: 238px;
  padding: 22px;
  border: 1px solid rgba(24, 33, 30, 0.14);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 18px 36px rgba(34, 39, 34, 0.06);
}

.pipeline-card:nth-child(4n + 1) {
  border-top: 5px solid var(--teal);
}

.pipeline-card:nth-child(4n + 2) {
  border-top: 5px solid var(--gold);
}

.pipeline-card:nth-child(4n + 3) {
  border-top: 5px solid var(--blue);
}

.pipeline-card:nth-child(4n + 4) {
  border-top: 5px solid var(--coral);
}

.stage-number {
  color: var(--muted);
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 800;
}

.pipeline-card h3,
.benchmark-grid h3,
.schema-grid h3,
.audio-group h3,
.ablation h3 {
  margin: 14px 0 10px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.15;
  letter-spacing: 0;
}

.pipeline-card p,
.benchmark-grid p,
.ablation p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.connector {
  position: absolute;
  right: 14px;
  bottom: 12px;
  color: rgba(18, 107, 102, 0.55);
  font-size: 30px;
  font-weight: 800;
}

.review-loop {
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
  gap: 22px;
  margin-top: 20px;
  padding: 22px;
  border: 1px dashed rgba(18, 107, 102, 0.5);
  border-radius: 8px;
  background: rgba(18, 107, 102, 0.07);
}

.review-loop span {
  display: block;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.review-loop strong {
  display: block;
  margin-top: 8px;
  color: var(--teal);
  font-size: 23px;
  line-height: 1.18;
}

.review-loop p {
  margin: 0;
  color: #33443d;
  font-size: 16px;
  line-height: 1.62;
}

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

.benchmark-grid article {
  padding: 24px;
}

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

.schema-grid article {
  min-height: 136px;
  padding: 20px;
}

.schema-grid article:nth-child(1) {
  border-left: 5px solid var(--teal);
}

.schema-grid article:nth-child(2) {
  border-left: 5px solid var(--gold);
}

.schema-grid article:nth-child(3) {
  border-left: 5px solid var(--blue);
}

.schema-grid article:nth-child(4) {
  border-left: 5px solid var(--green);
}

.schema-grid article:nth-child(5) {
  border-left: 5px solid var(--coral);
}

.schema-grid article:nth-child(6) {
  border-left: 5px solid #7c6aa6;
}

.schema-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.highlight-grid article {
  padding: 20px;
}

.highlight-grid span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.highlight-grid strong {
  display: block;
  margin: 12px 0 8px;
  color: var(--teal);
  font-size: 32px;
  line-height: 1;
}

.highlight-grid p {
  margin: 0;
  color: #415049;
  font-size: 14px;
  line-height: 1.48;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

caption {
  caption-side: top;
  padding: 16px 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-align: left;
}

th,
td {
  padding: 15px 18px;
  border-top: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

thead th {
  background: rgba(18, 107, 102, 0.09);
  color: var(--ink);
  font-size: 13px;
  text-transform: uppercase;
}

tbody th {
  color: var(--ink);
  font-weight: 800;
}

tbody tr:first-child {
  background: rgba(18, 107, 102, 0.08);
}

td {
  color: #35443e;
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
}

.ablation {
  margin-top: 18px;
  padding: 22px;
}

.audio-note {
  max-width: 860px;
  margin: -10px 0 28px 188px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.58;
}

code {
  padding: 2px 5px;
  border: 1px solid rgba(24, 33, 30, 0.12);
  border-radius: 4px;
  background: rgba(255, 253, 248, 0.78);
  color: var(--coral);
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
}

.audio-demo-root {
  display: grid;
  gap: 22px;
}

.sample-player {
  padding: 22px;
  box-shadow: 0 18px 36px rgba(34, 39, 34, 0.05);
}

.sample-player-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  margin-bottom: 18px;
}

.sample-player-head span {
  display: block;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.sample-player-head h3 {
  margin: 8px 0 8px;
  color: var(--ink);
  font-size: 26px;
  line-height: 1.1;
}

.sample-player audio {
  display: none;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.play-button {
  min-width: 86px;
  min-height: 40px;
  border: 1px solid var(--teal);
  border-radius: 6px;
  background: var(--teal);
  color: #ffffff;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.play-button:hover {
  filter: brightness(0.94);
}

.time-readout {
  color: var(--muted);
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  font-weight: 800;
}

.segment-progress {
  width: 100%;
  accent-color: var(--teal);
}

.metadata-screen {
  min-height: 190px;
  margin-top: 14px;
  padding: 18px;
  border-radius: 8px;
  background: #18211e;
  color: #ffffff;
}

.metadata-screen-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: baseline;
  margin-bottom: 14px;
}

.metadata-screen-head span {
  color: #ffcf87;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.metadata-screen-head strong {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  font-weight: 800;
  text-align: right;
}

.live-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  max-height: 340px;
  overflow-y: auto;
}

.live-meta-grid div {
  padding: 9px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.07);
}

.live-meta-grid span {
  display: block;
  color: #ffcf87;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.live-meta-grid p {
  margin: 5px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 12px;
  line-height: 1.35;
}

.current-segment-root {
  margin-top: 16px;
}

.current-segment-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  overflow: hidden;
}

.current-segment-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 107, 102, 0.08);
}

.current-segment-head span {
  color: var(--ink);
  font-size: 15px;
  font-weight: 800;
}

.current-segment-head strong {
  color: var(--blue);
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}

.current-text-card {
  padding: 18px;
}

.current-text-card span {
  display: block;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.current-text-card p {
  margin: 0;
  padding-top: 8px;
  color: #31423b;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.35;
}

@media (max-width: 980px) {
  .section-heading,
  .review-loop {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .abstract-card {
    column-count: 1;
  }

  .pipeline,
  .schema-grid,
  .highlight-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .audio-note {
    margin-left: 0;
  }

  .sample-player-head {
    grid-template-columns: 1fr;
  }

  .live-meta-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .metadata-screen-head {
    display: block;
  }

  .metadata-screen-head strong {
    display: block;
    margin-top: 6px;
    text-align: left;
  }

  .wide-figure img {
    min-width: 760px;
  }
}

@media (max-width: 680px) {
  .top-nav {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-stats,
  .benchmark-grid,
  .pipeline,
  .schema-grid,
  .highlight-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(48px, 17vw, 72px);
  }

  .section {
    padding: 58px 0;
  }

  .abstract-card,
  .sample-player {
    padding: 18px;
  }

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

  .current-segment-head {
    grid-template-columns: 1fr;
  }
}