:root {
  color-scheme: light;
  --ink: #0b0b0a;
  --paper: #efeee8;
  --paper-deep: #deddd5;
  --acid: #c8ff32;
  --muted: #6c6b64;
  --line: rgba(11, 11, 10, 0.2);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: Arial, 'Helvetica Neue', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button, input { font: inherit; }

a { color: inherit; }

.wordmark {
  display: inline-block;
  color: var(--paper);
  font-size: 1.02rem;
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.07em;
  text-decoration: none;
}

.wordmark-dark { color: var(--ink); }

.eyebrow, .kicker, .chapter-number, .header-meta, .login-index, .case-platform,
.case-difficulty, .field-label, .mechanism-chip, .issue-count, .site-footer {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

/* Member gate */
.login-page {
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--paper);
  background:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px),
    var(--ink);
  background-size: 44px 44px;
}

.login-page::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

.login-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(360px, 0.6fr);
  min-height: 100vh;
}

.login-manifesto {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 42px 48px 52px;
  border-right: 1px solid rgba(239,238,232,0.18);
  overflow: hidden;
}

.login-orbit {
  position: absolute;
  top: 6vh;
  right: -7vw;
  width: min(50vw, 680px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.login-orbit strong {
  position: relative;
  z-index: 2;
  color: var(--acid);
  font-family: var(--serif);
  font-size: clamp(2.7rem, 7vw, 8rem);
  font-style: italic;
  font-weight: 400;
  line-height: 0.78;
  letter-spacing: -0.08em;
  transform: rotate(-8deg);
}

.orbit-ring {
  position: absolute;
  inset: 10%;
  border: 1px solid rgba(200,255,50,0.42);
  border-radius: 48% 52% 46% 54%;
  transform: rotate(17deg) scaleY(0.54);
  animation: orbit 18s linear infinite;
}

.orbit-ring-b {
  inset: 21%;
  border-color: rgba(239,238,232,0.25);
  transform: rotate(-31deg) scaleY(0.68);
  animation-direction: reverse;
  animation-duration: 26s;
}

.orbit-dot {
  position: absolute;
  top: 31%;
  right: 12%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 8px rgba(200,255,50,0.1);
}

@keyframes orbit { to { transform: rotate(377deg) scaleY(0.54); } }

.login-copy { position: relative; z-index: 3; max-width: 820px; }
.login-copy .eyebrow { color: var(--acid); }

.login-copy h1 {
  max-width: 900px;
  margin: 24px 0 32px;
  font-family: var(--serif);
  font-size: clamp(3.5rem, 7.5vw, 9rem);
  font-weight: 400;
  line-height: 0.82;
  letter-spacing: -0.075em;
}

.login-copy h1 em { color: var(--acid); font-weight: 400; }

.login-copy > p:last-child {
  max-width: 550px;
  margin: 0;
  color: #b9b8b0;
  font-size: clamp(0.92rem, 1.15vw, 1.14rem);
  line-height: 1.7;
}

.login-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px clamp(32px, 5vw, 80px);
  background: var(--paper);
  color: var(--ink);
}

.login-index { position: absolute; top: 42px; right: 38px; color: var(--muted); }
.login-form label { display: block; margin-bottom: 13px; font-size: 0.8rem; font-weight: 800; }

.password-field {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  border-bottom: 2px solid var(--ink);
}

.password-field input {
  width: 100%;
  padding: 17px 0;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
}

.password-field button {
  padding: 12px 0 12px 18px;
  border: 0;
  background: transparent;
  font-size: 0.66rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  cursor: pointer;
}

.login-submit {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 28px;
  padding: 17px 19px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

.login-submit:hover, .login-submit:focus-visible { background: var(--acid); color: var(--ink); }
.login-submit:disabled { opacity: 0.5; cursor: wait; }
.login-status { min-height: 1.5em; margin: 13px 0 0; color: #a12626; font-size: 0.78rem; line-height: 1.5; }
.login-footnote { position: absolute; right: 38px; bottom: 32px; left: 38px; margin: 0; color: var(--muted); font-size: 0.69rem; line-height: 1.55; }

/* Issue */
.issue-page { overflow-x: hidden; background: var(--paper); }
.reading-progress { position: fixed; z-index: 20; top: 0; right: 0; left: 0; height: 3px; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--acid); }

.site-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  min-height: 112px;
  padding: 25px 34px;
  border-bottom: 1px solid var(--ink);
}

.header-meta { display: flex; gap: 28px; padding-top: 3px; }
.header-meta span:last-child { color: var(--muted); }

.logout-button {
  justify-self: end;
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  font-size: 0.71rem;
  font-weight: 800;
  cursor: pointer;
}

.loading-state { min-height: 70vh; display: grid; place-content: center; text-align: center; }
.loading-state p { font-family: var(--serif); font-size: 2rem; font-style: italic; }
.loading-state span { width: 90px; height: 2px; margin: 0 auto; background: var(--ink); animation: loading 1.4s ease-in-out infinite; transform-origin: left; }
@keyframes loading { 0%, 100% { transform: scaleX(.12); } 50% { transform: scaleX(1); } }

.issue-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
  min-height: calc(100vh - 112px);
  border-bottom: 1px solid var(--ink);
}

.hero-main { min-width: 0; display: flex; flex-direction: column; justify-content: space-between; padding: 50px 34px 42px; border-right: 1px solid var(--ink); overflow: hidden; }
.hero-topline { display: flex; justify-content: space-between; align-items: baseline; }
.issue-count { color: var(--muted); }
.hero-title { margin: 8vh 0; font-family: var(--serif); font-size: clamp(5.1rem, 14vw, 15rem); font-weight: 400; line-height: .68; letter-spacing: -.095em; }
.hero-title em { display: block; margin-left: 12vw; color: transparent; -webkit-text-stroke: 1.5px var(--ink); font-weight: 400; }
.hero-bottom { display: grid; grid-template-columns: minmax(180px, .6fr) 1.4fr; gap: 34px; align-items: end; }
.hero-bottom strong { color: var(--acid); background: var(--ink); padding: 9px 11px; font-size: .7rem; letter-spacing: .12em; }
.hero-bottom p { margin: 0; max-width: 760px; font-family: var(--serif); font-size: clamp(1.15rem, 2vw, 1.8rem); line-height: 1.35; }
.hero-side { display: flex; flex-direction: column; justify-content: space-between; padding: 44px 30px 34px; background: var(--ink); color: var(--paper); }
.hero-side .featured-no { color: var(--acid); font-family: var(--serif); font-size: clamp(5rem, 9vw, 10rem); font-style: italic; line-height: .8; }
.hero-side h2 { margin: auto 0 18px; font-family: var(--serif); font-size: clamp(2rem, 3.4vw, 4.2rem); font-weight: 400; line-height: .92; letter-spacing: -.05em; }
.hero-side p { margin: 0 0 22px; color: #b9b8b0; font-size: .86rem; line-height: 1.65; }
.source-link { display: flex; justify-content: space-between; padding: 13px 0; border-top: 1px solid currentColor; text-decoration: none; font-size: .72rem; font-weight: 900; letter-spacing: .08em; }

.principle-map { display: grid; grid-template-columns: repeat(5, 1fr); border-bottom: 1px solid var(--ink); }
.principle-map span { min-height: 106px; padding: 18px; border-right: 1px solid var(--ink); font-family: var(--serif); font-size: clamp(1rem, 1.7vw, 1.6rem); line-height: 1.05; }
.principle-map span:last-child { border-right: 0; }
.principle-map span.active { background: var(--acid); }

.cases { counter-reset: case; }
.case-study { display: grid; grid-template-columns: minmax(230px, .42fr) minmax(0, 1.58fr); border-bottom: 1px solid var(--ink); counter-increment: case; }
.case-aside { position: relative; min-width: 0; padding: 38px 30px; border-right: 1px solid var(--ink); }
.case-aside::before { content: '0' counter(case); display: block; margin-bottom: 20vh; font-family: var(--serif); font-size: clamp(4rem, 7vw, 7rem); font-style: italic; line-height: .75; }
.case-aside::before { color: var(--case-accent); }
.case-platform { color: var(--muted); }
.case-aside h2 { margin: 14px 0 12px; font-family: var(--serif); font-size: clamp(2.2rem, 4vw, 4.8rem); font-weight: 400; line-height: .9; letter-spacing: -.055em; }
.case-author { margin: 0 0 26px; font-size: .86rem; line-height: 1.4; }
.case-difficulty { display: inline-block; padding: 8px 10px; border: 1px solid var(--ink); }
.mechanism-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.mechanism-chip { padding: 8px 9px; background: var(--ink); color: var(--paper); }
.case-content { min-width: 0; padding: 42px 34px 54px; }
.case-memory { max-width: 1000px; margin: 0 0 48px; font-family: var(--serif); font-size: clamp(1.8rem, 3.7vw, 4.2rem); line-height: 1.05; letter-spacing: -.035em; }
.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.field { padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.field-label { display: block; margin-bottom: 11px; color: var(--muted); }
.field p { margin: 0; font-size: .88rem; line-height: 1.72; }
.field-evidence { grid-column: 1 / -1; background: #e4e3dc; }
.case-links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.case-links a { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 2px solid var(--ink); font-size: .75rem; font-weight: 900; text-decoration: none; }

.closing-grid { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--ink); }
.closing-block { padding: 44px 34px 52px; }
.closing-block:first-child { border-right: 1px solid var(--ink); }
.closing-block h2 { margin: 18px 0 25px; font-family: var(--serif); font-size: clamp(2.3rem, 4vw, 4.8rem); font-weight: 400; line-height: .95; letter-spacing: -.05em; }
.experiment-data { display: grid; grid-template-columns: 120px 1fr; border-top: 1px solid var(--line); }
.experiment-data dt, .experiment-data dd { margin: 0; padding: 15px 0; border-bottom: 1px solid var(--line); font-size: .82rem; line-height: 1.6; }
.experiment-data dt { font-weight: 900; }
.experiment-data ul { margin: 0; padding-left: 18px; }
.restraint-copy { margin: 8vh 0 0; font-family: var(--serif); font-size: clamp(1.5rem, 2.7vw, 3rem); line-height: 1.18; }
.site-footer { display: flex; justify-content: space-between; gap: 30px; padding: 26px 34px; background: var(--ink); color: var(--paper); }
.site-footer p { margin: 0; }

@media (max-width: 880px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-manifesto { min-height: 62vh; padding: 28px 24px 36px; border-right: 0; border-bottom: 1px solid rgba(239,238,232,.18); }
  .login-orbit { top: 0; right: -24vw; width: 92vw; }
  .login-copy h1 { font-size: clamp(3.1rem, 13vw, 6rem); }
  .login-panel { min-height: 38vh; padding: 70px 24px 95px; }
  .login-index { top: 25px; right: 24px; }
  .login-footnote { right: 24px; bottom: 22px; left: 24px; }
  .site-header { grid-template-columns: 1fr auto; min-height: 86px; padding: 20px; }
  .header-meta { display: none; }
  .issue-hero { grid-template-columns: 1fr; }
  .hero-main { min-height: 70vh; padding: 32px 20px; border-right: 0; border-bottom: 1px solid var(--paper); }
  .hero-topline { gap: 14px; }
  .hero-topline .issue-count { text-align: right; }
  .hero-title { margin: 12vh 0 10vh; font-size: clamp(4rem, 20vw, 7rem); }
  .hero-title em { margin-left: 7vw; font-size: .75em; }
  .hero-bottom { grid-template-columns: 1fr; }
  .hero-side { min-height: 55vh; padding: 34px 20px; }
  .principle-map { grid-template-columns: 1fr; }
  .principle-map span { min-height: auto; border-right: 0; border-bottom: 1px solid var(--ink); }
  .principle-map span:last-child { border-bottom: 0; }
  .case-study { grid-template-columns: 1fr; }
  .case-aside { padding: 30px 20px; border-right: 0; border-bottom: 1px solid var(--ink); }
  .case-aside h2 { overflow-wrap: anywhere; }
  .case-aside::before { margin-bottom: 12vh; }
  .case-content { padding: 34px 20px 44px; }
  .case-grid, .case-links, .closing-grid { grid-template-columns: 1fr; }
  .field-evidence { grid-column: auto; }
  .closing-block:first-child { border-right: 0; border-bottom: 1px solid var(--ink); }
  .site-footer { flex-direction: column; padding: 25px 20px; line-height: 1.5; }
}

@media (max-width: 520px) {
  .login-manifesto { min-height: 58vh; }
  .login-copy > p:last-child { font-size: .83rem; }
  .login-orbit strong { font-size: 3.1rem; }
  .case-grid { border-left: 0; }
  .field { padding: 20px 0; border-right: 0; }
  .field-evidence { margin: 0 -20px; padding: 20px; }
  .experiment-data { grid-template-columns: 1fr; }
  .experiment-data dt { padding-bottom: 0; border-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}