:root {
  --ink: #11171b;
  --ink-2: #26343a;
  --muted: #667378;
  --paper: #f3f1ea;
  --paper-2: #e9e5da;
  --card: #fbfaf6;
  --line: #d1cec4;
  --line-dark: #9da3a1;
  --blue: #0a67a5;
  --blue-dark: #07486f;
  --blue-pale: #dcecf5;
  --orange: #e46a16;
  --orange-pale: #f8e5d4;
  --violet: #8355ad;
  --green: #648d33;
  --green-pale: #e6edda;
  --red-pale: #f5ddd6;
  --shadow: 0 18px 48px rgba(17, 23, 27, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, "Aptos", "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

button,
audio {
  font: inherit;
}

a {
  color: inherit;
}

button,
a,
audio {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible,
audio:focus-visible {
  outline: 3px solid rgba(10, 103, 165, 0.34);
  outline-offset: 4px;
}

main {
  min-height: 100vh;
  overflow: hidden;
}

.top-nav {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: 66px;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(28px, calc((100vw - 1440px) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  background: rgba(17, 23, 27, 0.94);
  backdrop-filter: blur(14px);
}

.wordmark {
  text-decoration: none;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.wordmark span {
  color: #68b7e6;
}

.top-nav > div {
  display: flex;
  gap: 32px;
}

.top-nav > div a {
  color: #c8d0d3;
  text-decoration: none;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.top-nav > div a:hover {
  color: #fff;
}

.hero {
  position: relative;
  display: grid;
  min-height: 790px;
  grid-template-columns: minmax(0, 1.4fr) minmax(330px, 0.6fr);
  gap: clamp(50px, 8vw, 128px);
  align-items: center;
  padding: 138px max(30px, calc((100vw - 1440px) / 2)) 100px;
  color: #f9fbfb;
  background: var(--ink);
}

.hero::before {
  position: absolute;
  top: 66px;
  left: max(30px, calc((100vw - 1440px) / 2));
  width: 76px;
  height: 4px;
  content: "";
  background: var(--orange);
}

.hero-copy,
.hero-contract {
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-index,
.case-kicker,
.table-title span,
.system-heading p,
.reference-heading > span {
  margin: 0;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.eyebrow {
  margin-bottom: 30px;
  color: #92a5ad;
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(48px, 5.7vw, 88px);
  font-weight: 500;
  line-height: 0.99;
  letter-spacing: -0.048em;
}

.hero h1 em {
  color: #68b7e6;
  font-weight: 500;
}

.hero h1 .method-name {
  color: var(--orange);
  font-size: 0.62em;
  font-style: normal;
  letter-spacing: -0.025em;
}

.hero-summary {
  max-width: 720px;
  margin: 34px 0 0;
  color: #b6c2c7;
  font-size: 18px;
  line-height: 1.75;
}

.hero-authors {
  max-width: 860px;
  margin-top: 24px;
}

.hero-authors p {
  margin: 0;
}

.author-list {
  color: #e1e8ea;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 14px;
  line-height: 1.9;
}

.author-list a {
  text-decoration-color: rgba(104, 183, 230, 0.45);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.author-list a:hover {
  color: #8ec9eb;
}

.author-list sup,
.affiliation-list sup {
  color: #78bbe2;
}

.affiliation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin-top: 8px !important;
  color: #83979f;
  font-size: 11px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.hero-actions a {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  text-decoration: none;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-actions a:hover {
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--orange) !important;
  color: #fff;
  background: var(--orange);
}

.button-secondary {
  color: #e2e8ea;
  background: transparent;
}

.hero-contract {
  display: grid;
  align-content: center;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.035);
}

.hero-contract > p {
  margin: 0 0 28px;
  color: #7f9299;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-contract > div {
  position: relative;
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 2px 12px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(255, 255, 255, 0.025);
}

.hero-contract > div > span {
  grid-row: 1 / 3;
  color: #6f858e;
  font-family: Georgia, serif;
  font-size: 17px;
}

.hero-contract strong {
  font-family: Georgia, serif;
  font-size: 19px;
  font-weight: 500;
}

.hero-contract small {
  color: #8fa1a8;
  font-size: 11px;
  line-height: 1.5;
}

.hero-contract > b {
  padding: 7px 0;
  color: var(--orange);
  text-align: center;
  font-size: 16px;
}

.hero-contract .contract-output {
  border-color: #4289b4;
  background: rgba(10, 103, 165, 0.16);
}

.hero-signal {
  position: absolute;
  right: -12px;
  bottom: 0;
  left: -12px;
  z-index: 1;
  display: flex;
  height: 84px;
  align-items: end;
  justify-content: space-between;
  gap: 5px;
  overflow: hidden;
  opacity: 0.42;
}

.hero-signal i {
  width: 100%;
  height: var(--bar);
  background: #1e738e;
  animation: pulse 2.6s ease-in-out var(--delay) infinite alternate;
  transform-origin: bottom;
}

@keyframes pulse {
  from {
    transform: scaleY(0.42);
  }
  to {
    transform: scaleY(1);
  }
}

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

  .hero-signal i {
    animation: none;
  }
}

.metric-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.metric-ribbon > div {
  display: grid;
  min-height: 150px;
  grid-template-columns: auto 1fr;
  gap: 4px 18px;
  align-content: center;
  padding: 28px max(22px, 3vw);
  border-right: 1px solid var(--line);
}

.metric-ribbon > div:last-child {
  border-right: 0;
}

.metric-ribbon strong {
  grid-row: 1 / 3;
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: clamp(34px, 3vw, 50px);
  font-weight: 500;
  letter-spacing: -0.04em;
}

.metric-ribbon span {
  align-self: end;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-ribbon small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.section {
  width: min(1440px, calc(100% - 60px));
  margin: 0 auto;
  padding: 118px 0;
}

.section-heading {
  margin-bottom: 54px;
}

.section-index {
  margin-bottom: 20px;
  color: var(--orange);
}

.section-heading h2,
.pscg-grid h2 {
  max-width: 900px;
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(39px, 4.6vw, 68px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.6fr);
  gap: 80px;
  align-items: end;
}

.split-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.intro-section {
  padding-bottom: 96px;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(500px, 1.2fr);
  gap: 90px;
  align-items: start;
}

.lead {
  margin: 0;
  color: var(--ink-2);
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(24px, 2.5vw, 36px);
  line-height: 1.48;
}

.role-list {
  border-top: 1px solid var(--line-dark);
}

.role-list article {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.role-list article > span {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--line-dark);
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 22px;
}

.role-list h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.role-list p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.method-section {
  width: 100%;
  max-width: none;
  padding-right: max(30px, calc((100vw - 1440px) / 2));
  padding-left: max(30px, calc((100vw - 1440px) / 2));
  background: #ece9df;
}

.paper-figure {
  margin: 0;
}

.figure-button {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--line);
  cursor: zoom-in;
  background: #fff;
}

.figure-button img {
  display: block;
  width: 100%;
  height: auto;
}

.figure-button span {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 9px 12px;
  color: #fff;
  background: rgba(17, 23, 27, 0.88);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.paper-figure figcaption {
  max-width: 1060px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.lightbox {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  cursor: zoom-out;
  place-items: center;
  padding: 70px 24px 24px;
  background: rgba(6, 10, 12, 0.94);
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: 96vw;
  max-height: 88vh;
  object-fit: contain;
  background: #fff;
}

.lightbox button {
  position: absolute;
  top: 20px;
  right: 24px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  cursor: pointer;
  background: transparent;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.method-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 50px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.method-points article {
  min-height: 210px;
  padding: 32px;
  border-right: 1px solid var(--line);
}

.method-points article:last-child {
  border-right: 0;
}

.method-points span {
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: 32px;
}

.method-points h3 {
  margin: 32px 0 10px;
  font-size: 15px;
}

.method-points p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.pscg-grid {
  display: grid;
  grid-template-columns: minmax(340px, 0.68fr) minmax(0, 1.32fr);
  gap: 70px;
  align-items: center;
  margin-top: 116px;
}

.pscg-grid h2 {
  font-size: clamp(35px, 3.7vw, 56px);
}

.pscg-grid ol {
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
}

.pscg-grid li {
  display: grid;
  grid-template-columns: 36px 1fr;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  counter-increment: grounding;
}

.pscg-grid ol {
  counter-reset: grounding;
}

.pscg-grid li::before {
  content: "0" counter(grounding);
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: 13px;
}

.pscg-grid li b {
  font-size: 13px;
}

.pscg-grid li span {
  grid-column: 2;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.results-section {
  width: 100%;
  max-width: none;
  padding-right: max(30px, calc((100vw - 1440px) / 2));
  padding-left: max(30px, calc((100vw - 1440px) / 2));
  color: #edf3f5;
  background: #162126;
}

.results-section .section-index {
  color: #68b7e6;
}

.results-section .split-heading > p {
  color: #a2b0b6;
}

.table-card {
  border: 1px solid #35444a;
  background: #1b292f;
}

.table-title {
  display: flex;
  min-height: 102px;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 24px 28px;
  border-bottom: 1px solid #35444a;
}

.table-title span {
  color: #7f949c;
}

.table-title h3 {
  margin: 6px 0 0;
  font-family: Georgia, serif;
  font-size: 26px;
  font-weight: 500;
}

.table-title small {
  color: #83969e;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
}

th,
td {
  padding: 18px 16px;
  border-right: 1px solid #2f3d43;
  border-bottom: 1px solid #2f3d43;
  text-align: center;
  white-space: nowrap;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

thead th {
  color: #879aa2;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

tbody th {
  min-width: 190px;
  text-align: left;
  font-weight: 700;
}

tr > *:last-child {
  border-right: 0;
}

tbody tr:last-child > * {
  border-bottom: 0;
}

.ours-row {
  background: rgba(10, 103, 165, 0.22);
}

.ours-row th {
  color: #87cff8;
}

.best {
  color: #9cdd9d;
  font-weight: 850;
}

.table-note {
  margin: 0;
  padding: 16px 28px 20px;
  border-top: 1px solid #35444a;
  color: #82959d;
  font-size: 10px;
  line-height: 1.65;
}

.results-pair {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 28px;
  align-items: start;
  margin-top: 28px;
}

.listening-card table {
  min-width: 690px;
}

.results-pair .paper-figure {
  padding: 22px;
  border: 1px solid #35444a;
  background: #1b292f;
}

.results-pair .paper-figure figcaption {
  color: #82959d;
}

.real-world-section {
  width: 100%;
  max-width: none;
  padding-right: max(30px, calc((100vw - 1440px) / 2));
  padding-left: max(30px, calc((100vw - 1440px) / 2));
  background:
    linear-gradient(135deg, rgba(10, 103, 165, 0.09), transparent 42%),
    #e7ebec;
}

.real-world-case {
  overflow: hidden;
  border: 1px solid #aab6ba;
  background: var(--card);
  box-shadow: 0 24px 62px rgba(17, 23, 27, 0.12);
}

.real-world-case + .real-world-case {
  margin-top: 48px;
}

.real-world-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.72fr);
  gap: 52px;
  align-items: end;
  padding: 44px;
  color: #eef5f7;
  background:
    linear-gradient(110deg, rgba(10, 103, 165, 0.3), transparent 58%),
    var(--ink);
}

.real-world-kicker {
  margin: 0 0 12px;
  color: #78c4ed;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.16em;
}

.real-world-header h3 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(38px, 4.5vw, 68px);
  font-weight: 500;
  letter-spacing: -0.04em;
}

.real-world-header > div:first-child > p:last-child {
  max-width: 760px;
  margin: 16px 0 0;
  color: #9eb0b7;
  font-size: 13px;
  line-height: 1.75;
}

.real-world-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid #3c4c52;
  border-bottom: 1px solid #3c4c52;
}

.real-world-stats span {
  display: flex;
  min-height: 104px;
  flex-direction: column;
  justify-content: center;
  padding: 18px;
  border-right: 1px solid #3c4c52;
}

.real-world-stats span:last-child {
  border-right: 0;
}

.real-world-stats strong {
  color: #8ed2f7;
  font-family: Georgia, serif;
  font-size: 27px;
  font-weight: 500;
}

.real-world-stats small {
  margin-top: 6px;
  color: #82969e;
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.real-world-pipeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  padding: 22px 30px;
  border-bottom: 1px solid var(--line);
  background: #edf3f5;
}

.real-world-pipeline span {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--ink-2);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.real-world-pipeline b {
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 14px;
  font-weight: 500;
}

.real-world-pipeline i {
  padding: 0 15px;
  color: var(--orange);
  font-style: normal;
}

.real-world-listen {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.listen-card {
  min-width: 0;
  padding: 30px;
  border-right: 1px solid var(--line);
  background: #f7f6f1;
}

.listen-card:last-child {
  border-right: 0;
}

.listen-card-edited {
  color: #eff7fa;
  background: var(--blue-dark);
}

.listen-card > div {
  min-height: 58px;
}

.listen-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--orange);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.listen-card-edited span {
  color: #9edcff;
}

.listen-card strong {
  font-family: Georgia, serif;
  font-size: 22px;
  font-weight: 500;
}

.listen-card p {
  min-height: 54px;
  margin: 14px 0 22px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.7;
}

.listen-card-edited p {
  color: #abc1cb;
}

.real-world-contract {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-bottom: 1px solid var(--line);
}

.real-world-contract > div {
  display: grid;
  grid-template-columns: 150px minmax(150px, 0.42fr) minmax(260px, 0.58fr);
  gap: 22px;
  align-items: center;
  padding: 25px 30px;
  border-right: 1px solid var(--line);
}

.real-world-contract > div:last-child {
  border-right: 0;
}

.real-world-contract span {
  color: var(--blue);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.real-world-contract strong {
  font-family: Georgia, serif;
  font-size: 18px;
  font-weight: 500;
}

.real-world-contract p {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.65;
}

.real-world-lyrics {
  padding: 34px 30px 40px;
}

.lyrics-table-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--ink);
}

.lyrics-table-heading span {
  color: var(--orange);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.lyrics-table-heading h4 {
  margin: 7px 0 0;
  font-family: Georgia, serif;
  font-size: 26px;
  font-weight: 500;
}

.lyrics-table-heading small {
  color: var(--muted);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.real-world-line {
  display: grid;
  grid-template-columns: 42px 92px minmax(145px, 1fr) 26px minmax(145px, 1fr) 170px;
  gap: 14px;
  align-items: center;
  min-height: 70px;
  border-bottom: 1px solid var(--line);
}

.real-world-line:last-child {
  border-bottom: 0;
}

.line-index {
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 16px;
}

.real-world-line time {
  color: var(--muted);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
}

.real-world-line > p {
  margin: 0;
  padding: 8px 10px;
  font-family: "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: 17px;
  letter-spacing: 0.04em;
}

.source-lyric {
  color: #704c43;
  background: #f4e9e5;
}

.target-lyric {
  color: #275c73;
  background: #e2f0f6;
  font-weight: 700;
}

.real-world-line > i {
  color: var(--orange);
  font-style: normal;
  text-align: center;
}

.real-world-line > div {
  display: grid;
  grid-template-columns: auto auto auto auto;
  gap: 4px 8px;
  justify-content: end;
  align-items: baseline;
  font-variant-numeric: tabular-nums;
}

.real-world-line > div b {
  color: var(--blue-dark);
  font-size: 11px;
}

.real-world-line > div small {
  color: var(--muted);
  font-size: 7px;
  font-weight: 800;
}

.demos-section {
  width: 100%;
  max-width: none;
  padding-right: max(30px, calc((100vw - 1440px) / 2));
  padding-left: max(30px, calc((100vw - 1440px) / 2));
}

.protocol-banner {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 28px;
  margin-bottom: 30px;
  padding: 22px 26px;
  border: 1px solid #e0b88f;
  color: #603614;
  background: #f8ead8;
}

.protocol-banner strong {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.protocol-banner p {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
}

.task-filter {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-bottom: 56px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.task-filter button {
  min-height: 82px;
  padding: 14px 18px;
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  background: transparent;
  text-align: left;
  font-size: 11px;
}

.task-filter button:last-child {
  border-right: 0;
}

.task-filter button:hover,
.task-filter button.active {
  color: #fff;
  background: var(--blue);
}

.task-filter button span {
  display: block;
  margin-bottom: 7px;
  color: var(--orange);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.task-filter button.active span,
.task-filter button:hover span {
  color: #c8e9fa;
}

.loading-state,
.load-error {
  padding: 40px;
  border: 1px solid var(--line);
  text-align: center;
}

.load-error {
  color: #8b2f1c;
  background: var(--red-pale);
}

.task-group {
  margin-bottom: 104px;
}

.task-group > header {
  display: grid;
  grid-template-columns: 74px minmax(260px, 0.45fr) minmax(300px, 0.55fr);
  gap: 26px;
  align-items: center;
  margin-bottom: 26px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--ink);
}

.task-group > header > span {
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 32px;
}

.task-group > header div p {
  margin: 0 0 4px;
  color: var(--orange);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.task-group > header h3 {
  margin: 0;
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 500;
}

.task-group > header > p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.demo-case {
  margin-bottom: 30px;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: 0 12px 34px rgba(17, 23, 27, 0.05);
}

.case-header {
  display: flex;
  min-height: 104px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 28px;
  border-bottom: 1px solid var(--line);
}

.case-header > div:first-child {
  display: flex;
  gap: 20px;
  align-items: center;
}

.case-number {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid var(--line-dark);
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 17px;
}

.case-kicker {
  margin-bottom: 5px;
  color: var(--orange);
}

.case-header h3 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 27px;
  font-weight: 500;
}

.case-tags {
  display: flex;
  gap: 8px;
}

.case-tags span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-context {
  display: grid;
  grid-template-columns: minmax(310px, 0.42fr) minmax(0, 0.58fr);
  border-bottom: 1px solid var(--line);
}

.reference-block {
  padding: 24px 28px;
  border-right: 1px solid var(--line);
  background: var(--blue-pale);
}

.reference-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.reference-heading > span {
  color: var(--blue-dark);
}

.reference-heading small {
  color: #59737f;
  font-size: 9px;
}

audio {
  display: block;
  width: 100%;
  height: 38px;
}

.lyric-pair {
  display: grid;
  align-content: center;
  padding: 20px 28px;
}

.lyric-line {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 10px 0;
}

.lyric-line + .lyric-line {
  border-top: 1px solid var(--line);
}

.lyric-line > span {
  color: var(--muted);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.lyric-line p {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: 20px;
  line-height: 1.75;
  letter-spacing: 0.035em;
}

.lyric-line mark {
  padding: 2px 1px;
  color: inherit;
  background: transparent;
}

.lyric-line mark.removed {
  color: #9c432e;
  background: var(--red-pale);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.lyric-line mark.added {
  color: #3c6720;
  background: var(--green-pale);
  font-weight: 700;
}

.systems-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.system-card {
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--line);
}

.system-card:last-child {
  border-right: 0;
}

.system-card-ours {
  position: relative;
  background: #edf6fa;
}

.system-card-ours::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  content: "";
  background: var(--blue);
}

.system-heading {
  display: flex;
  min-height: 62px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.system-heading p {
  color: var(--muted);
  font-size: 7px;
}

.system-heading h4 {
  margin: 7px 0 0;
  font-family: Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.25;
}

.ours-badge {
  padding: 5px 7px;
  color: #fff;
  background: var(--blue);
  font-size: 7px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.system-card audio {
  margin-top: 8px;
}

.clip-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 16px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.metric-pill {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
  padding: 8px 6px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.metric-pill small {
  color: var(--muted);
  font-size: 7px;
  font-weight: 800;
}

.metric-pill strong {
  overflow: hidden;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  text-overflow: ellipsis;
}

.protocol-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 8px;
  line-height: 1.55;
}

.diagnostics-section {
  padding-top: 0;
}

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

.diagnostics-section summary {
  display: grid;
  min-height: 108px;
  grid-template-columns: 170px 1fr 40px;
  gap: 20px;
  align-items: center;
  cursor: pointer;
  list-style: none;
}

.diagnostics-section summary::-webkit-details-marker {
  display: none;
}

.diagnostics-section summary span {
  color: var(--orange);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.diagnostics-section summary strong {
  font-family: Georgia, serif;
  font-size: 24px;
  font-weight: 500;
}

.diagnostics-section summary i {
  font-size: 26px;
  font-style: normal;
  text-align: center;
}

.diagnostics-section details[open] summary i {
  transform: rotate(45deg);
}

.diagnostics-section details > div {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(250px, 0.7fr);
  gap: 44px;
  align-items: center;
  padding: 0 0 42px;
}

.diagnostics-section details > div > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.release-note {
  display: grid;
  grid-template-columns: minmax(240px, 0.65fr) minmax(320px, 1.35fr);
  gap: 60px;
  align-items: end;
  padding: 54px max(30px, calc((100vw - 1440px) / 2));
  border-top: 1px solid var(--line);
  background: var(--orange-pale);
}

.release-note p {
  margin: 0;
  color: #7b4b2a;
  font-size: 13px;
  line-height: 1.75;
}

.release-note > div > p {
  margin-bottom: 8px;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.release-note h2 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(25px, 3vw, 42px);
  font-weight: 500;
  line-height: 1.08;
}

footer {
  display: flex;
  min-height: 210px;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  padding: 48px max(30px, calc((100vw - 1440px) / 2));
  color: #d8e1e4;
  background: var(--ink);
}

footer > div {
  display: flex;
  gap: 28px;
  align-items: center;
}

footer p {
  max-width: 520px;
  margin: 0;
  color: #81949c;
  font-size: 10px;
  line-height: 1.7;
}

footer > p {
  max-width: 360px;
  text-align: right;
}

@media (max-width: 1180px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .hero-contract {
    max-width: 680px;
  }

  .metric-ribbon {
    grid-template-columns: repeat(2, 1fr);
  }

  .metric-ribbon > div:nth-child(2) {
    border-right: 0;
  }

  .metric-ribbon > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .intro-grid,
  .pscg-grid,
  .results-pair,
  .real-world-header,
  .release-note {
    grid-template-columns: 1fr;
  }

  .intro-grid {
    gap: 55px;
  }

  .systems-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .real-world-listen {
    grid-template-columns: 1fr 1fr;
  }

  .listen-card:nth-child(2) {
    border-right: 0;
  }

  .listen-card-vocal {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
  }

  .real-world-contract {
    grid-template-columns: 1fr;
  }

  .real-world-contract > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .real-world-contract > div:last-child {
    border-bottom: 0;
  }

  .real-world-line {
    grid-template-columns: 42px 92px minmax(130px, 1fr) 24px minmax(130px, 1fr);
  }

  .real-world-line > div {
    grid-column: 3 / -1;
    justify-content: start;
    padding-bottom: 12px;
  }

  .system-card:nth-child(3) {
    border-right: 0;
  }

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

  .system-card:nth-child(5) {
    border-right: 0;
  }
}

@media (max-width: 860px) {
  .top-nav > div {
    gap: 16px;
  }

  .hero {
    padding-top: 116px;
  }

  .split-heading {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .method-points {
    grid-template-columns: 1fr;
  }

  .method-points article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .method-points article:last-child {
    border-bottom: 0;
  }

  .protocol-banner,
  .case-context,
  .real-world-contract > div {
    grid-template-columns: 1fr;
  }

  .real-world-pipeline {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .real-world-pipeline span {
    min-height: 54px;
    border-bottom: 1px solid var(--line);
  }

  .real-world-pipeline i {
    display: none;
  }

  .reference-block {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .task-filter {
    grid-template-columns: repeat(2, 1fr);
  }

  .task-filter button {
    border-bottom: 1px solid var(--line);
  }

  .task-filter button:nth-child(even) {
    border-right: 0;
  }

  .task-filter button:last-child {
    border-bottom: 0;
  }

  .task-group > header {
    grid-template-columns: 60px 1fr;
  }

  .task-group > header > p {
    grid-column: 2;
  }

  .systems-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .system-card:nth-child(2n) {
    border-right: 0;
  }

  .system-card:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .diagnostics-section details > div {
    grid-template-columns: 1fr;
  }

  footer,
  footer > div {
    align-items: flex-start;
    flex-direction: column;
  }

  footer > p {
    text-align: left;
  }
}

@media (max-width: 620px) {
  .top-nav {
    padding-right: 18px;
    padding-left: 18px;
  }

  .top-nav > div a:not(:last-child) {
    display: none;
  }

  .hero {
    padding-right: 20px;
    padding-left: 20px;
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 62px);
  }

  .hero-summary {
    font-size: 15px;
  }

  .author-list {
    font-size: 13px;
  }

  .affiliation-list {
    flex-direction: column;
    gap: 2px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .metric-ribbon {
    grid-template-columns: 1fr;
  }

  .metric-ribbon > div,
  .metric-ribbon > div:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .metric-ribbon > div:last-child {
    border-bottom: 0;
  }

  .section,
  .method-section,
  .results-section,
  .real-world-section,
  .demos-section {
    width: 100%;
    padding: 84px 20px;
  }

  .section-heading h2,
  .pscg-grid h2 {
    font-size: 38px;
  }

  .method-section,
  .results-section {
    padding-right: 20px;
    padding-left: 20px;
  }

  .protocol-banner {
    gap: 10px;
  }

  .real-world-header {
    gap: 34px;
    padding: 30px 22px;
  }

  .real-world-stats {
    grid-template-columns: 1fr;
  }

  .real-world-stats span {
    min-height: 76px;
    border-right: 0;
    border-bottom: 1px solid #3c4c52;
  }

  .real-world-stats span:last-child {
    border-bottom: 0;
  }

  .real-world-pipeline {
    grid-template-columns: 1fr;
    padding: 15px 22px;
  }

  .real-world-listen {
    grid-template-columns: 1fr;
  }

  .listen-card,
  .listen-card:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .listen-card:last-child {
    border-bottom: 0;
  }

  .listen-card-vocal {
    grid-column: auto;
    border-top: 0;
  }

  .real-world-contract > div {
    gap: 8px;
    padding: 24px 22px;
  }

  .real-world-lyrics {
    padding: 28px 20px;
  }

  .real-world-line {
    grid-template-columns: 36px 1fr 24px 1fr;
    gap: 8px;
    padding: 16px 0;
  }

  .real-world-line time {
    grid-column: 2 / -1;
    grid-row: 1;
  }

  .real-world-line > p {
    font-size: 15px;
  }

  .real-world-line > div {
    grid-column: 2 / -1;
  }

  .task-filter {
    grid-template-columns: 1fr;
  }

  .task-filter button,
  .task-filter button:nth-child(even) {
    border-right: 0;
  }

  .case-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .systems-grid {
    grid-template-columns: 1fr;
  }

  .system-card,
  .system-card:nth-child(3),
  .system-card:nth-child(5) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .system-card:last-child {
    border-bottom: 0;
  }

  .reference-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .lyric-line {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .lyric-line p {
    font-size: 18px;
  }

  .diagnostics-section {
    padding: 0 20px 84px;
  }

  .diagnostics-section summary {
    grid-template-columns: 1fr 40px;
  }

  .diagnostics-section summary span {
    grid-column: 1;
  }

  .diagnostics-section summary strong {
    grid-column: 1;
  }

  .diagnostics-section summary i {
    grid-column: 2;
    grid-row: 1 / 3;
  }
}