:root {
  --gray-mammoth: #818181;
  --black: #151517;
  --white: #ffffff;
  --gray-light: #f7f7f7;
  --gray-dark: #949494;
  --accent: #1f35a9;
  --contain: max(2vw, 10px);
  --block: 50px;
  --section: 100px;
  --font-serif: "Newsreader", Georgia, serif;
  --font-sans: "Inter", system-ui, sans-serif;
}

@media (min-width: 1080px) {
  :root { --block: 100px; --section: 200px; }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--gray-mammoth);
  color: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: var(--white); }
a { color: inherit; text-decoration: none; }

.contain {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding-inline: var(--contain);
}

.t-h-2 {
  font: 600 clamp(40px, 13vw, 60px) / 1.05 var(--font-serif);
  letter-spacing: -0.02em;
}
@media (min-width: 600px) {
  .t-h-2 { font-size: clamp(70px, 8vw, 150px); }
}

.t-h-3 {
  font: 600 clamp(40px, 13vw, 60px) / 1.05 var(--font-serif);
  letter-spacing: -0.02em;
}
@media (min-width: 600px) {
  .t-h-3 { font-size: clamp(60px, 5vw, 140px); }
}

.t-h-4 {
  font: 500 clamp(26px, 3vw, 50px) / 1 var(--font-serif);
}

.t-h-5 {
  font: 500 clamp(20px, 2.5vw, 30px) / 1.05 var(--font-serif);
  letter-spacing: 0.01em;
}

.t-b-1 {
  font: 400 clamp(22px, 2.5vw, 40px) / 1.1 var(--font-sans);
  letter-spacing: -0.02em;
}
@media (min-width: 600px) {
  .t-b-1 { font: 400 clamp(26px, 2.5vw, 40px) / 1 var(--font-sans); }
}

.t-b-2 {
  font: 500 clamp(18px, 1.25vw, 24px) / 1.15 var(--font-sans);
  letter-spacing: 0.02em;
}

.t-b-3 {
  font: 500 clamp(12px, 1.1vw, 16px) / 1.4 var(--font-sans);
  letter-spacing: 0.02em;
}

.site-header {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.site-header .logo { display: flex; align-items: center; flex-shrink: 0; }
.site-header .logo img { width: 36px; height: 36px; display: block; }

.header-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 12px 20px;
  font: 500 clamp(12px, 1.1vw, 16px) / 1.4 var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.header-links a {
  opacity: 0.8;
  transition: opacity 0.2s;
}
.header-links a:hover,
.header-links a[aria-current="page"] { opacity: 1; }
@media (max-width: 767px) {
  .header-links .nav-extra { display: none; }
}

main { padding-top: 80px; }
.section { padding-block: var(--section); }

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
}
.hero h1 { width: 100%; max-width: 1400px; }
.hero .intro {
  width: 90%;
  max-width: 720px;
  text-wrap: pretty;
}

.hero-cta,
.btn-primary {
  display: inline-block;
  padding: 14px 28px;
  background: var(--accent);
  color: var(--white);
  border-radius: 4px;
  font: 500 16px / 1.4 var(--font-sans);
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}
.hero-cta:hover,
.btn-primary:hover { opacity: 0.9; }

.btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  color: var(--white);
  border-radius: 4px;
  font: 500 16px / 1.4 var(--font-sans);
  transition: border-color 0.2s, background 0.2s;
}
.btn-secondary:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.06);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.concept-section {
  background: var(--black);
  padding-block: var(--section);
}
.concept-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
}
.concept-inner .thesis,
.concept-inner .intro {
  width: 90%;
  max-width: 800px;
  text-wrap: pretty;
}
.concept-inner .intro { color: var(--gray-light); }

.story-prose {
  width: 90%;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 1.35em;
  text-align: center;
}
.story-prose p {
  color: var(--gray-light);
  text-wrap: pretty;
  line-height: 1.6;
}
.story-prose .story-punch {
  color: var(--white);
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.2vw, 32px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.hero .story-prose { max-width: 720px; }
.hero .story-prose .story-punch {
  font-size: clamp(20px, 2vw, 28px);
}

.page-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
  margin-bottom: 40px;
}
.page-header .intro {
  width: 90%;
  max-width: 720px;
  text-wrap: pretty;
  color: var(--gray-light);
}

.values-header,
.coming-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
  margin-bottom: 40px;
}
.values-header .intro,
.coming-header .intro {
  width: 90%;
  max-width: 640px;
  text-wrap: pretty;
}
.coming-header .intro em { font-style: italic; opacity: 0.85; }

.quote-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  max-width: 1000px;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .quote-grid { grid-template-columns: repeat(2, 1fr); }
}
.quote-card {
  background: var(--black);
  border-radius: 8px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.quote-card blockquote {
  font: 400 clamp(18px, 1.5vw, 24px) / 1.35 var(--font-serif);
  color: var(--white);
  text-wrap: pretty;
}
.quote-card cite {
  font: 500 clamp(12px, 1.1vw, 16px) / 1.4 var(--font-sans);
  color: var(--gray-light);
  font-style: normal;
}
.quote-card .quote-source {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font: 500 clamp(11px, 1vw, 14px) / 1.4 var(--font-sans);
}

.model-pipeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 600px) {
  .model-pipeline.four { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .model-pipeline { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1100px) {
  .model-pipeline.four { grid-template-columns: repeat(4, 1fr); }
}
.pipeline-step {
  background: var(--accent);
  border-radius: 8px;
  padding: 32px 24px;
  text-align: center;
}
.pipeline-step .step-num {
  font: 500 clamp(12px, 1.1vw, 16px) / 1.4 var(--font-sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 12px;
}
.pipeline-step .step-desc {
  margin-top: 16px;
  opacity: 0.9;
  text-wrap: pretty;
}

.process-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  max-width: 1000px;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .process-flow { grid-template-columns: repeat(4, 1fr); }
}
.process-step {
  background: var(--black);
  border-radius: 8px;
  padding: 28px 20px;
}
.process-step .step-num {
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.process-step p { color: var(--gray-light); margin-top: 12px; }

.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 900px) {
  .detail-grid { grid-template-columns: repeat(3, 1fr); }
}
.detail-card {
  background: var(--black);
  border-radius: 8px;
  padding: 32px 24px;
}
.detail-card .card-tag {
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.detail-card ul {
  list-style: none;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.detail-card li {
  color: var(--gray-light);
  padding-left: 16px;
  position: relative;
}
.detail-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.value-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding-block: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  max-width: 940px;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .value-row {
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: start;
  }
}
.value-row p { color: var(--gray-light); text-wrap: pretty; }

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  width: 100%;
}
@media (min-width: 600px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}
.card-grid.two { max-width: 940px; margin: 0 auto; }
@media (min-width: 600px) {
  .card-grid.two { grid-template-columns: repeat(2, 1fr); }
}

.flip-card {
  position: relative;
  aspect-ratio: 10 / 7;
  perspective: 2000px;
}
.flip-card-inner {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}
.flip-card.flipped .flip-card-inner { transform: rotateY(180deg); }
.flip-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.flip-face.front { background: var(--accent); color: var(--white); }
.flip-face.back {
  background: var(--white);
  color: var(--gray-mammoth);
  transform: rotateY(180deg);
  overflow-y: auto;
}
.flip-face .learn-more { display: flex; align-items: center; gap: 8px; }
.flip-btn {
  position: absolute;
  inset: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 8px;
}
.flip-face.back ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.flip-face.back li {
  font: 500 clamp(12px, 1.1vw, 16px) / 1.4 var(--font-sans);
  letter-spacing: 0.02em;
}
.arrow-icon { width: 1.25em; height: auto; }

.index-section { padding-block: var(--section); }
.index-header {
  text-align: center;
  margin-bottom: 40px;
}
.index-header .intro {
  margin-top: 16px;
  color: var(--gray-light);
}
.index-panel {
  background: var(--white);
  color: var(--black);
  border-radius: 8px;
  padding: 40px 28px;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
}
.index-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.index-counter {
  font: 500 clamp(12px, 1.1vw, 16px) / 1.4 var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-dark);
}
.index-progress {
  flex: 1;
  height: 6px;
  background: var(--gray-light);
  border-radius: 3px;
  margin-left: 20px;
  overflow: hidden;
}
.index-progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.35s ease;
  width: 0%;
}
.index-question { display: none; }
.index-question.active { display: block; }
.index-question .question-text {
  margin-bottom: 28px;
  text-wrap: pretty;
}
.index-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.index-opt {
  padding: 16px 14px;
  border: 2px solid var(--gray-light);
  border-radius: 4px;
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  text-align: center;
}
.index-opt:hover {
  border-color: var(--accent);
  background: #f0f2ff;
}
.index-result { display: none; text-align: center; }
.index-result.visible { display: block; }
.index-result .result-score {
  color: var(--accent);
  margin: 8px 0 16px;
}
.index-result .result-badge {
  display: inline-block;
  padding: 10px 20px;
  background: var(--accent);
  color: var(--white);
  border-radius: 4px;
  margin-bottom: 20px;
}
.index-result .result-desc {
  color: var(--gray-mammoth);
  margin-bottom: 28px;
  text-wrap: pretty;
}
.index-restart {
  padding: 14px 24px;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: var(--white);
  font: 500 16px / 1.4 var(--font-sans);
  cursor: pointer;
  transition: opacity 0.2s;
}
.index-restart:hover { opacity: 0.9; }

.notify-section {
  background: var(--black);
  padding-block: var(--section);
}
.notify-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
}
.notify-inner .desc {
  width: 90%;
  max-width: 520px;
  color: var(--gray-dark);
  text-wrap: pretty;
}

.contact-form,
.notify-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 560px;
}
.contact-form .form-row,
.notify-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.contact-form input,
.contact-form textarea,
.notify-form input {
  width: 100%;
  padding: 14px 16px;
  border: none;
  border-radius: 4px;
  font: 500 16px / 1.4 var(--font-sans);
  background: var(--white);
  color: var(--black);
}
.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus,
.notify-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.contact-form button,
.notify-form button {
  padding: 14px 24px;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: var(--white);
  font: 500 16px / 1.4 var(--font-sans);
  cursor: pointer;
  transition: opacity 0.2s;
}
.contact-form button:hover,
.notify-form button:hover { opacity: 0.9; }

.form-success {
  display: none;
  color: var(--gray-light);
  font: 500 18px / 1.4 var(--font-sans);
  text-align: center;
}
.index-panel .form-success {
  color: var(--gray-mammoth);
}
.form-section.submitted .contact-form,
.form-section.submitted .notify-form { display: none; }
.form-section.submitted .form-success { display: block; }

.teaser-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 600px) {
  .teaser-links { grid-template-columns: repeat(2, 1fr); }
}
.teaser-link {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
  background: var(--black);
  border-radius: 8px;
  padding: 28px 24px;
  min-height: 160px;
  transition: background 0.2s;
}
.teaser-link:hover { background: #1e1e22; }
.teaser-link .link-arrow {
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0.8;
}

.legal-content {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.legal-content p,
.legal-content li {
  color: var(--gray-light);
  text-wrap: pretty;
}
.legal-content ul {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Mammoth-style footer */
.site-footer {
  padding: 16px 16px var(--block);
}
.footer-panel {
  background: var(--black);
  color: var(--gray-light);
  border-radius: 8px;
  padding: 40px 28px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}
@media (min-width: 900px) {
  .footer-panel { padding: 40px; gap: 56px; }
}
.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
}
@media (min-width: 900px) {
  .footer-top {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    text-align: left;
  }
}
.footer-logo img {
  width: 120px;
  height: auto;
  display: block;
}
@media (min-width: 900px) {
  .footer-logo img { width: 160px; }
}
.footer-cols {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
@media (min-width: 900px) {
  .footer-cols {
    flex-direction: row;
    align-items: flex-start;
    gap: 56px;
  }
}
.footer-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
@media (min-width: 900px) {
  .footer-col { align-items: flex-start; gap: 20px; }
}
.footer-label {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
@media (min-width: 900px) {
  .footer-col ul { align-items: flex-start; gap: 16px; }
}
.footer-col a {
  transition: opacity 0.2s;
}
.footer-col a:hover { opacity: 0.75; }
.footer-email {
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
}
.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
@media (min-width: 900px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 12px;
  list-style: none;
}
.footer-legal .sep { opacity: 0.4; }
.footer-copy { opacity: 0.7; }

.story-arc {
  max-width: 940px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.story-beat {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding-block: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
@media (min-width: 900px) {
  .story-beat {
    grid-template-columns: 80px 1fr;
    gap: 32px;
    align-items: start;
  }
}
.story-beat .beat-num {
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.story-beat.drift .beat-num { color: #c45c5c; }
.story-beat.drift h2 { color: var(--white); }
.story-beat p {
  color: var(--gray-light);
  text-wrap: pretty;
}

.concept-inner .intro a {
  color: var(--gray-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.coming-header .intro a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-end-cta {
  text-align: center;
  padding-block: var(--section);
}
.page-end-cta .intro {
  margin: 16px 0 28px;
  color: var(--gray-light);
}