:root {
  --black: #080b0a;
  --ink: #f2f5ef;
  --muted: #9ca69f;
  --line: #46504a;
  --paper: #f1f4ed;
  --paper-ink: #111611;
  --acid: #c8ff46;
  --cyan: #59dfe2;
  --coral: #ff7465;
  --yellow: #ffdd59;
  --max: 1360px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--black);
  color: var(--ink);
  font-family: Consolas, "SFMono-Regular", "Liberation Mono", monospace;
  letter-spacing: 0;
}
button, select { font: inherit; letter-spacing: 0; }
a { color: inherit; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 12px;
  transform: translateY(-160%);
  padding: 10px 14px;
  background: var(--yellow);
  color: #111;
  font-size: 11px;
  font-weight: 800;
}
.skip-link:focus { transform: none; }

.topbar {
  position: sticky;
  z-index: 40;
  top: 0;
  min-height: 54px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 11, 10, .96);
  backdrop-filter: blur(10px);
}
.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--ink);
  font-size: 9px;
  font-weight: 800;
  text-decoration: none;
}
.brand strong { color: var(--acid); font-size: 15px; }
.brand span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar nav { display: flex; align-items: center; gap: 6px; }
.topbar nav a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid transparent;
  color: #c5ccc6;
  font-size: 9px;
  font-weight: 800;
  text-decoration: none;
}
.topbar nav a:hover { border-color: var(--acid); color: var(--acid); }

.hero {
  position: relative;
  height: min(720px, calc(100svh - 100px));
  min-height: 590px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: rgba(1, 4, 3, .6);
  pointer-events: none;
}
.hero__media { position: absolute; z-index: -2; inset: 0; }
.hero__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  filter: contrast(1.18) saturate(.84) brightness(.68);
}
.hero__inner {
  width: min(var(--max), calc(100% - 56px));
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  margin: auto;
  padding: 24px 0 22px;
}
.hero__telemetry {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(242, 245, 239, .32);
  color: #b7c0b9;
  font-size: 9px;
  font-weight: 800;
}
.hero__copy { align-self: end; max-width: 1080px; padding: 42px 0; }
.eyebrow { margin: 0; color: var(--cyan); font-size: 10px; font-weight: 800; line-height: 1.5; }
.hero h1 {
  max-width: 1060px;
  margin: 16px 0 0;
  font-size: 70px;
  line-height: .98;
  overflow-wrap: anywhere;
  text-wrap: balance;
}
html[lang="zh-Hans"] .hero h1 { word-break: keep-all; }
.hero__body {
  max-width: 830px;
  margin: 23px 0 0;
  color: #e0e5e0;
  font: 500 16px/1.62 Arial, sans-serif;
}
.hero__actions, .proof-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.hero__actions { margin-top: 28px; }
.command, .icon-command {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid currentColor;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font-size: 9px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.command:hover, .icon-command:hover { background: currentColor; color: var(--black); }
.command--acid { border-color: var(--acid); background: var(--acid); color: #11150f; }
.command--acid:hover { background: transparent; color: var(--acid); }
.command--dark { border-color: #11150f; background: #11150f; color: #f6f8f2; }
.command--dark:hover { background: transparent; color: #11150f; }
.hero__facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid rgba(242, 245, 239, .36);
}
.hero__facts div { min-width: 0; padding: 14px 16px; border-right: 1px solid rgba(242, 245, 239, .28); }
.hero__facts div:last-child { border-right: 0; }
.hero__facts span, .gate-grid span {
  display: block;
  color: #aeb7b0;
  font-size: 8px;
  font-weight: 800;
  line-height: 1.4;
}
.hero__facts strong { display: block; margin-top: 8px; color: var(--acid); font-size: 22px; overflow-wrap: anywhere; }

.section { border-bottom: 1px solid var(--line); background: var(--paper); color: var(--paper-ink); }
.section--ink { background: #0c100e; color: var(--ink); }
.section--yellow { background: var(--yellow); color: #17150d; border-color: #17150d; }
.section__inner { width: min(var(--max), calc(100% - 56px)); margin: auto; padding: 78px 0; }
.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: 54px;
  align-items: end;
  padding-bottom: 30px;
  border-bottom: 1px solid currentColor;
}
.section-heading h2 { max-width: 900px; margin: 10px 0 0; font-size: 38px; line-height: 1.05; overflow-wrap: anywhere; }
.section-heading > p { margin: 0; opacity: .78; font: 500 14px/1.62 Arial, sans-serif; }
.section--yellow .eyebrow { color: #665600; }

.gate-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 34px;
  border: 1px solid #6f776f;
}
.gate-grid div { min-width: 0; min-height: 130px; padding: 20px; border-right: 1px solid #6f776f; }
.gate-grid div:last-child { border-right: 0; }
.gate-grid strong { display: block; color: #152113; font-size: 36px; line-height: 1; overflow-wrap: anywhere; }
.gate-grid span { margin-top: 26px; color: #4e5a50; }
.status-line { min-height: 22px; margin: 18px 0 0; color: #465048; font-size: 10px; font-weight: 800; }
.status-line[data-tone="error"] { color: #a1271c; }

.compare-controls {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 44px minmax(180px, 1fr) auto;
  gap: 10px;
  align-items: end;
  margin-top: 34px;
}
.compare-controls label { min-width: 0; display: grid; gap: 8px; color: var(--muted); font-size: 9px; font-weight: 800; }
.compare-controls select {
  width: 100%;
  min-height: 44px;
  padding: 0 38px 0 12px;
  border: 1px solid #5a665e;
  border-radius: 0;
  background: #111613;
  color: var(--ink);
}
.compare-controls select:disabled, .compare-controls button:disabled { cursor: not-allowed; opacity: .48; }
.icon-command { width: 44px; padding: 0; color: var(--cyan); font-size: 20px; }
.comparison-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
  gap: 24px;
  margin-top: 22px;
}
.comparison-stage canvas {
  width: 100%;
  min-width: 0;
  aspect-ratio: 15 / 7;
  display: block;
  border: 1px solid #4b5650;
  background: #080b0a;
}
.comparison-readout { display: grid; grid-template-rows: repeat(2, minmax(0, 1fr)); border: 1px solid #4b5650; }
.model-readout { min-width: 0; padding: 22px; border-bottom: 1px solid #4b5650; }
.model-readout:last-child { border-bottom: 0; }
.model-readout span { color: var(--muted); font-size: 8px; font-weight: 800; }
.model-readout h3 { margin: 10px 0 0; font-size: 21px; overflow-wrap: anywhere; }
.model-readout strong { display: block; margin-top: 20px; font-size: 44px; line-height: 1; }
.model-readout p { margin: 13px 0 0; color: #bcc5be; font: 500 12px/1.55 Arial, sans-serif; }
.model-readout--a strong { color: var(--cyan); }
.model-readout--b strong { color: var(--coral); }
.comparison-placeholder { grid-row: 1 / -1; display: grid; place-items: center; padding: 28px; color: var(--muted); text-align: center; font: 600 13px/1.6 Arial, sans-serif; }

.registry-head, .model-row {
  display: grid;
  grid-template-columns: minmax(210px, 1.2fr) minmax(230px, 1fr) 120px minmax(170px, .7fr);
  gap: 18px;
  align-items: center;
}
.registry-head { margin-top: 34px; padding: 0 16px 10px; color: #566158; font-size: 8px; font-weight: 800; }
.registry-list { border-top: 1px solid #6d776f; }
.model-row { min-height: 112px; padding: 18px 16px; border-bottom: 1px solid #6d776f; }
.model-row h3 { margin: 0; font-size: 20px; overflow-wrap: anywhere; }
.model-row h3 span { display: block; margin-bottom: 8px; color: #566158; font-size: 8px; }
.model-row__evidence { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.model-row__evidence span { min-width: 0; color: #4d584f; font-size: 8px; font-weight: 800; }
.model-row__evidence strong { display: block; margin-bottom: 6px; color: #111611; font-size: 18px; }
.model-row__score { color: #111611; font-size: 31px; font-weight: 800; }
.model-row__score small { font-size: 10px; }
.status-badge { display: inline-flex; width: fit-content; min-height: 30px; align-items: center; padding: 0 9px; border: 1px solid #465048; font-size: 8px; font-weight: 800; }
.status-badge--ready { border-color: #2d561f; background: var(--acid); color: #15200f; }
.model-row button { justify-self: start; margin-top: 10px; min-height: 30px; padding: 0 9px; border: 0; background: transparent; color: #273b2e; font-size: 8px; font-weight: 800; text-decoration: underline; cursor: pointer; }
.empty-state { padding: 62px 0 6px; text-align: center; }
.empty-state strong { display: block; font-size: 26px; }
.empty-state p { max-width: 620px; margin: 16px auto 24px; color: #566158; font: 500 14px/1.6 Arial, sans-serif; }

.proof-list { margin-top: 34px; border-top: 1px solid #17150d; }
.proof-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 110px 120px minmax(210px, 1fr) auto;
  gap: 18px;
  align-items: center;
  min-height: 84px;
  padding: 14px 0;
  border-bottom: 1px solid #17150d;
}
.proof-row h3 { margin: 0; font-size: 16px; overflow-wrap: anywhere; }
.proof-row span { font-size: 9px; font-weight: 800; }
.proof-row code { min-width: 0; overflow: hidden; color: #5b500c; font-size: 8px; text-overflow: ellipsis; white-space: nowrap; }
.proof-row a { font-size: 9px; font-weight: 800; }
.proof-empty { padding: 40px 0; border-bottom: 1px solid #17150d; font: 600 14px/1.6 Arial, sans-serif; }
.proof-actions { margin-top: 24px; }

.method-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid #5b665f; margin-top: 34px; }
.method-grid article { min-height: 250px; padding: 22px; border-right: 1px solid #5b665f; }
.method-grid article:last-child { border-right: 0; }
.method-grid span { color: var(--coral); font-size: 10px; font-weight: 800; }
.method-grid h3 { margin: 44px 0 0; font-size: 18px; }
.method-grid p { margin: 13px 0 0; color: #b4bdb6; font: 500 13px/1.6 Arial, sans-serif; }
.research-rail { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 22px; border: 1px solid #5b665f; }
.research-rail a { min-width: 0; padding: 16px; border-right: 1px solid #5b665f; text-decoration: none; }
.research-rail a:last-child { border-right: 0; }
.research-rail span, .research-rail b { display: block; overflow-wrap: anywhere; }
.research-rail span { color: var(--cyan); font-size: 11px; }
.research-rail b { margin-top: 9px; color: #abb4ad; font-size: 8px; }
.research-rail a:hover b { color: var(--ink); }

.footer {
  min-height: 82px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  padding: 16px 28px;
  color: #a8b2aa;
  font-size: 9px;
  font-weight: 800;
}
.footer a { text-decoration: none; }
.footer a:last-child { justify-self: end; }

@media (max-width: 920px) {
  .hero h1 { font-size: 54px; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .comparison-stage { grid-template-columns: 1fr; }
  .comparison-readout { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: none; }
  .model-readout { border-right: 1px solid #4b5650; border-bottom: 0; }
  .model-readout:last-child { border-right: 0; }
  .method-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .method-grid article:nth-child(2) { border-right: 0; }
  .method-grid article:nth-child(-n+2) { border-bottom: 1px solid #5b665f; }
  .registry-head, .model-row { grid-template-columns: minmax(180px, 1fr) minmax(220px, 1fr) 100px; }
  .registry-head span:last-child, .model-row__status { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
  .topbar { min-height: 52px; padding: 0 14px; gap: 8px; }
  .brand span { display: none; }
  .brand strong { font-size: 13px; }
  .topbar nav { gap: 0; }
  .topbar nav a { min-height: 32px; padding: 0 7px; font-size: 8px; }
  .hero { height: 690px; min-height: 690px; }
  .hero__inner, .section__inner { width: min(100% - 28px, var(--max)); }
  .hero__inner { padding: 16px 0; }
  .hero__telemetry { display: grid; grid-template-columns: 1fr; gap: 6px; }
  .hero__telemetry span:nth-child(2) { display: none; }
  .hero__copy { padding: 34px 0 24px; }
  .hero h1 { font-size: 43px; line-height: 1; }
  .hero__body { margin-top: 18px; font-size: 14px; }
  .hero__actions { display: grid; grid-template-columns: 1fr; margin-top: 22px; }
  .hero__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__facts div { padding: 11px; }
  .hero__facts div:nth-child(2) { border-right: 0; }
  .hero__facts div:nth-child(-n+2) { border-bottom: 1px solid rgba(242, 245, 239, .28); }
  .hero__facts strong { font-size: 18px; }
  .section__inner { padding: 56px 0; }
  .section-heading { padding-bottom: 22px; }
  .section-heading h2 { font-size: 30px; }
  .gate-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gate-grid div { min-height: 118px; padding: 16px; }
  .gate-grid div:nth-child(2) { border-right: 0; }
  .gate-grid div:nth-child(-n+2) { border-bottom: 1px solid #6f776f; }
  .gate-grid strong { font-size: 30px; }
  .gate-grid span { margin-top: 20px; }
  .compare-controls { grid-template-columns: 1fr 44px; }
  .compare-controls label:first-child { grid-column: 1 / -1; }
  .compare-controls label:nth-of-type(2) { grid-column: 1 / -1; }
  .compare-controls .command { grid-column: 1 / -1; }
  .compare-controls .icon-command { grid-column: 2; grid-row: 2; justify-self: end; transform: translateY(-52px); }
  .comparison-stage canvas { min-height: 350px; aspect-ratio: auto; }
  .comparison-readout { grid-template-columns: 1fr; }
  .model-readout { border-right: 0; border-bottom: 1px solid #4b5650; }
  .model-readout strong { font-size: 38px; }
  .registry-head { display: none; }
  .registry-list { margin-top: 28px; }
  .model-row { grid-template-columns: 1fr auto; gap: 14px; padding: 18px 0; }
  .model-row h3, .model-row__evidence { grid-column: 1 / -1; }
  .model-row__score { font-size: 28px; }
  .model-row__status { grid-column: auto; justify-self: end; }
  .proof-row { grid-template-columns: 1fr auto; gap: 10px; }
  .proof-row h3, .proof-row code { grid-column: 1 / -1; }
  .proof-row a { justify-self: end; }
  .proof-actions { display: grid; grid-template-columns: 1fr; }
  .method-grid, .research-rail { grid-template-columns: 1fr; }
  .method-grid article { min-height: 210px; border-right: 0; border-bottom: 1px solid #5b665f; }
  .method-grid article:last-child { border-bottom: 0; }
  .method-grid h3 { margin-top: 28px; }
  .research-rail a { border-right: 0; border-bottom: 1px solid #5b665f; }
  .research-rail a:last-child { border-bottom: 0; }
  .footer { grid-template-columns: 1fr; justify-items: start; }
  .footer a:last-child { justify-self: start; }
}

@media (max-width: 420px) {
  .hero h1 { font-size: 38px; }
  .topbar nav a:nth-child(3) { display: none; }
  .model-row__evidence { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

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