:root {
  --bg: #edf2f7;
  --bg-strong: #dfeaf2;
  --paper: rgba(248, 250, 252, 0.78);
  --paper-strong: rgba(252, 253, 255, 0.94);
  --ink: #1e293b;
  --muted: #526171;
  --line: rgba(28, 43, 47, 0.14);
  --gold: #f97316;
  --gold-soft: #fdba74;
  --teal: #2563eb;
  --teal-soft: #93c5fd;
  --link: #1d4ed8;
  --link-hover: #1e40af;
  --shadow: 0 20px 50px rgba(48, 40, 20, 0.12);
  --shadow-soft: 0 10px 24px rgba(48, 40, 20, 0.08);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(249, 115, 22, 0.18), transparent 28%),
    radial-gradient(circle at 92% 14%, rgba(37, 99, 235, 0.16), transparent 26%),
    linear-gradient(180deg, #f7fafc 0%, #eff5fb 46%, #ebf1f7 100%);
}

body::before,
body::after {
  position: fixed;
  inset: auto;
  content: "";
  pointer-events: none;
  z-index: 0;
  filter: blur(14px);
}

body::before {
  top: 120px;
  left: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(249, 115, 22, 0.18);
}

body::after {
  right: -40px;
  bottom: 140px;
  width: 280px;
  height: 280px;
  border-radius: 38% 62% 60% 40%;
  background: rgba(37, 99, 235, 0.14);
}

a {
  color: var(--link);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.18em;
  transition:
    color 160ms ease,
    text-decoration-color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    opacity 160ms ease,
    transform 160ms ease;
}

a:hover,
a:focus-visible {
  color: var(--link-hover);
}

a:focus-visible {
  outline: 2px solid rgba(27, 118, 104, 0.24);
  outline-offset: 3px;
  border-radius: 8px;
}

.page-shell {
  position: relative;
  z-index: 1;
}

.hero,
.section,
.footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 24px 0 12px;
  position: sticky;
  top: 0;
  z-index: 5;
  margin-top: 8px;
  padding-left: 16px;
  padding-right: 16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  background: rgba(250, 245, 236, 0.72);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.brand,
.topbar-links a {
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand img {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
}

.topbar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 0.96rem;
}

.topbar-links a {
  min-height: 44px;
  padding: 10px 0;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(290px, 0.8fr);
  gap: 28px;
  align-items: stretch;
  padding: 28px 0 48px;
}

.hero-copy,
.hero-panel,
.workflow-frame,
.feature-card,
.thesis-card,
.repo-panel,
.manuscript-strip {
  background: var(--paper);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 40px;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.hero-copy::before {
  position: absolute;
  inset: 0 auto auto 0;
  width: 180px;
  height: 180px;
  content: "";
  border-radius: 0 0 180px 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(249, 115, 22, 0.04));
  pointer-events: none;
}

.lede {
  position: relative;
  z-index: 1;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  position: relative;
  z-index: 1;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--teal) 0%, #1e3a8a 100%);
  color: #f8faf8;
  box-shadow: 0 12px 24px rgba(30, 58, 138, 0.2);
}

.button-secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.48);
}

.button:hover,
.button:focus-visible,
.topbar-links a:hover,
.topbar-links a:focus-visible,
.card-links a:hover,
.card-links a:focus-visible,
.repo-meta a:hover,
.repo-meta a:focus-visible {
  outline: none;
  opacity: 0.92;
}

.topbar-links a:hover,
.topbar-links a:focus-visible {
  color: var(--ink);
  border-color: rgba(37, 99, 235, 0.3);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
  position: relative;
  z-index: 1;
}

.fact-chip {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(28, 43, 47, 0.08);
}

.fact-value {
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
}

.fact-label {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.signal-list,
.feature-card ul {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  position: relative;
  z-index: 1;
}

.signal-list li,
.feature-card li {
  position: relative;
  margin-top: 12px;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.signal-list li::before,
.feature-card li::before {
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  content: "";
  border-radius: 50%;
  background: var(--gold);
  transform: translateY(-50%);
}

.hero-panel {
  border-radius: var(--radius-xl);
  padding: 18px;
}

.panel-stack {
  display: grid;
  gap: 18px;
  height: 100%;
}

.mini-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 24px;
  border-radius: calc(var(--radius-xl) - 10px);
  background: var(--paper-strong);
  border: 1px solid rgba(28, 43, 47, 0.08);
}

.mini-label,
.card-tag {
  margin: 0;
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mini-card h2 {
  font-size: 1.32rem;
  line-height: 1.02;
}

.mini-card p,
.feature-card p,
.thesis-card p,
.manuscript-strip p,
.repo-panel p,
.repo-note,
.workflow-step p {
  margin: 0;
  color: var(--muted);
  line-height: 1.68;
}

.repo-note {
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 4px solid var(--gold);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.48);
}

.mini-card code {
  display: inline-block;
  width: fit-content;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.09);
  color: var(--ink);
  font-size: 0.9rem;
}

.accent-card {
  background:
    linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(255, 255, 255, 0.88)),
    var(--paper-strong);
}

.section {
  padding: 40px 0;
}

.section-heading {
  max-width: none;
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.9rem);
  line-height: 1.02;
}

.thesis-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.thesis-card,
.feature-card {
  padding: 26px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.feature-card::before,
.thesis-card::before {
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 5px;
  content: "";
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.92), rgba(249, 115, 22, 0.92));
}

.thesis-card h3,
.feature-card h3,
.workflow-step h3,
.manuscript-strip h3 {
  margin-bottom: 10px;
  font-size: 1.4rem;
}

.workflow-band {
  padding-top: 12px;
}

.workflow-frame {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 16px;
  border-radius: var(--radius-xl);
}

.workflow-step {
  min-height: 200px;
  padding: 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(28, 43, 47, 0.08);
}

.workflow-step span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.1);
  color: var(--teal);
  font-weight: 800;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

.card-links a:not(.button-primary):not(.button-secondary),
.repo-meta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  color: var(--link);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 99, 235, 0.24);
}

.card-links a:not(.button-primary):not(.button-secondary)::after,
.repo-meta a::after {
  content: "\203A";
  font-size: 1.05em;
  line-height: 1;
}

.card-links a:not(.button-primary):not(.button-secondary):hover,
.card-links a:not(.button-primary):not(.button-secondary):focus-visible,
.repo-meta a:hover,
.repo-meta a:focus-visible {
  color: var(--link-hover);
  border-color: rgba(30, 64, 175, 0.45);
  transform: translateX(1px);
}

.artifact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.artifact-row span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.09);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
}

.workflow-note {
  margin-top: 14px;
  padding: 0 6px;
}

.prompt-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.prompt-card {
  display: grid;
  gap: 14px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(249, 242, 230, 0.9));
  border: 1px solid rgba(28, 43, 47, 0.1);
  box-shadow: var(--shadow-soft);
}

.prompt-card code {
  display: block;
  padding: 16px;
  overflow-wrap: anywhere;
  border-radius: 18px;
  background: rgba(28, 43, 47, 0.92);
  color: #eff6f2;
  font-family: "SFMono-Regular", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.65;
}

.manuscript-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding: 28px;
  border-radius: var(--radius-xl);
}

.repo-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 28px;
  padding: 30px;
  border-radius: var(--radius-xl);
}

.repo-meta {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
}

.repo-meta div {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(28, 43, 47, 0.08);
}

.repo-meta dt {
  margin-bottom: 6px;
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.repo-meta dd {
  margin: 0;
  line-height: 1.55;
  color: var(--ink);
}

.repo-actions {
  margin-top: 20px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 40px;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  animation: rise 700ms ease forwards;
}

.reveal-1 {
  animation-delay: 80ms;
}

.reveal-2 {
  animation-delay: 180ms;
}

.reveal-3 {
  animation-delay: 280ms;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .repo-panel,
  .card-grid,
  .manuscript-strip,
  .thesis-grid,
  .workflow-frame,
  .prompt-grid {
    grid-template-columns: 1fr;
  }

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

  .workflow-step {
    min-height: auto;
  }

  .title-hero {
    max-width: 11ch;
  }
}

@media (max-width: 720px) {
  .hero,
  .section,
  .footer {
    width: min(calc(100% - 20px), var(--max-width));
  }

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

  .topbar {
    align-items: stretch;
    gap: 10px;
    padding: 12px;
    border-radius: 28px;
    top: 8px;
  }

  .brand {
    font-size: 1.02rem;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .topbar-links {
    flex-wrap: nowrap;
    gap: 10px;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .topbar-links::-webkit-scrollbar {
    display: none;
  }

  .topbar-links a {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.62);
    border: 1px solid rgba(28, 43, 47, 0.08);
  }

  .card-links a:not(.button-primary):not(.button-secondary),
  .repo-meta a {
    width: 100%;
    justify-content: space-between;
  }

  .hero-copy,
  .hero-panel,
  .repo-panel,
  .manuscript-strip,
  .workflow-frame,
  .feature-card,
  .thesis-card,
  .prompt-card {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-copy {
    padding-top: 28px;
    padding-bottom: 28px;
  }

  .hero-copy::before {
    width: 132px;
    height: 132px;
    border-radius: 0 0 132px 0;
  }

  .hero-actions,
  .repo-actions {
    width: 100%;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .section {
    padding: 24px 0;
  }

  .section-heading {
    margin-bottom: 18px;
  }

  .lede,
  .mini-card p,
  .feature-card p,
  .thesis-card p,
  .manuscript-strip p,
  .repo-panel p,
  .workflow-step p,
  .signal-list li,
  .feature-card li,
  .repo-meta dd,
  .fact-label {
    font-size: 1rem;
  }

  .prompt-card code {
    font-size: 0.9rem;
  }

  body::before,
  body::after {
    display: none;
  }

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

  .fact-chip:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  .brand span {
    max-width: 12ch;
    line-height: 1.05;
  }

  .mini-card h2,
  .section-heading h2 {
    line-height: 1.06;
  }

  .workflow-frame {
    gap: 12px;
    padding: 12px;
  }

  .workflow-step,
  .repo-meta div,
  .fact-chip {
    padding: 16px;
  }

  .hero-grid {
    gap: 18px;
    padding: 18px 0 32px;
  }

  .hero-copy,
  .hero-panel,
  .repo-panel,
  .manuscript-strip,
  .workflow-frame,
  .feature-card,
  .thesis-card,
  .prompt-card {
    padding-left: 16px;
    padding-right: 16px;
  }

  .mini-card {
    padding: 18px;
  }

  .topbar-links a,
  .button,
  .card-links a:not(.button-primary):not(.button-secondary),
  .repo-meta a {
    min-height: 46px;
  }

  .prompt-card code {
    padding: 14px;
    font-size: 0.86rem;
    line-height: 1.55;
  }
}

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

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