/* Layout concept: a quiet, dark reading room. Deep ink-teal walls, warm paper-white type,
   one gold accent taken from the series' "graded by evidence" signal bars.
   The book covers are the color; the site frames them.
   Deliberately a single dark look (the brand's world), so no light-theme override. */
:root {
  --ink-0: #0b161b;        /* page */
  --ink-1: #0f1d23;        /* alternate band */
  --ink-2: #14262d;        /* raised surface */
  --ink-3: #1b3139;        /* hover / inputs */
  --line: #24393f;
  --line-soft: #1a2d33;
  --paper: #ece7dc;        /* main text, warm */
  --paper-2: #b9bfb8;      /* secondary text */
  --paper-3: #7f8f8e;      /* tertiary / captions */
  --gold: #d9b45a;
  --gold-hi: #ecca78;
  --gold-ink: #17140b;     /* text on gold */
  --gold-wash: rgb(217 180 90 / .10);
  --shadow: 0 2px 6px rgb(0 0 0 / .35), 0 24px 48px -12px rgb(0 0 0 / .55);
  --scrim: rgb(5 10 13 / .78);

  --font-display: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-body: "Hanken Grotesk", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --step--1: .8125rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: clamp(1.4rem, 1.2rem + .8vw, 1.75rem);
  --step-3: clamp(1.9rem, 1.4rem + 2vw, 2.75rem);
  --step-4: clamp(2.5rem, 1.5rem + 4.4vw, 4.9rem);
  --radius: 12px;
  --maxw: 1200px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; background: var(--ink-0); }
body {
  margin: 0; background: var(--ink-0); color: var(--paper);
  font: 400 var(--step-0)/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--ink-0); }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration-color: color-mix(in srgb, var(--gold) 60%, transparent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--gold); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; line-height: 1.08; letter-spacing: -.012em; text-wrap: balance; margin: 0; color: var(--paper); }
h1 { font-size: var(--step-4); font-weight: 400; letter-spacing: -.02em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); font-family: var(--font-body); font-weight: 600; letter-spacing: 0; }
h1 em, h2 em { font-style: italic; color: var(--gold-hi); }
p { margin: 0; }
code, .mono { font-family: var(--font-mono); font-size: .8125rem; letter-spacing: .01em; }
.muted { color: var(--paper-3); }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 6px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap {
  max-width: var(--maxw); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 760px) { .wrap { padding-left: max(40px, env(safe-area-inset-left, 0px)); padding-right: max(40px, env(safe-area-inset-right, 0px)); } }

.eyebrow { font: 500 .75rem/1.3 var(--font-body); letter-spacing: .16em; text-transform: uppercase; color: var(--gold); }
.lede { font-size: var(--step-1); color: var(--paper-2); max-width: 62ch; line-height: 1.6; }
.note { color: var(--paper-3); font-size: var(--step--1); margin-top: 28px; }

/* ---------- evidence bars (the series' signature) ---------- */
.bars { display: inline-flex; align-items: flex-end; gap: 2px; height: 14px; }
.bars i { display: block; width: 3px; border-radius: 1px; background: var(--line); }
.bars i:nth-child(1) { height: 35%; } .bars i:nth-child(2) { height: 55%; } .bars i:nth-child(3) { height: 78%; } .bars i:nth-child(4) { height: 100%; }
.bars i.on { background: var(--gold); }

/* ---------- buttons, pills, chips ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  min-height: 48px; padding: 0 1.4em; border-radius: 999px; border: 1px solid transparent;
  font: 600 .9375rem/1 var(--font-body); letter-spacing: .01em; text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-gold { background: var(--gold); color: var(--gold-ink); }
.btn-gold:hover { background: var(--gold-hi); }
.btn-line { background: transparent; color: var(--paper); border-color: color-mix(in srgb, var(--paper) 28%, transparent); }
.btn-line:hover { border-color: var(--gold); color: var(--gold-hi); }
.btn-sm { min-height: 40px; padding: 0 1.1em; font-size: .875rem; }
.btn-xs { min-height: 30px; padding: 0 .9em; font-size: .78rem; }
.btn.is-off { color: var(--paper-3); border-color: var(--line); cursor: default; }
.pill { display: inline-flex; align-items: center; padding: .18em .7em; border-radius: 999px; border: 1px solid var(--line); color: var(--paper-3); font: 500 .72rem/1.5 var(--font-body); letter-spacing: .04em; white-space: nowrap; }
.pill-on { color: var(--paper-2); }
.pill-new { color: var(--gold-ink); background: var(--gold); border-color: var(--gold); text-transform: uppercase; letter-spacing: .12em; }

.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 8px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip { flex: none; min-height: 38px; padding: 0 1.05em; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--paper-2); font: 500 .875rem/1 var(--font-body); cursor: pointer; transition: all .2s; }
.chip:hover { border-color: var(--paper-3); color: var(--paper); }
.chip.is-on { background: var(--paper); color: var(--ink-0); border-color: var(--paper); }

/* ---------- header ---------- */
.demo-bar { background: var(--gold-wash); color: var(--gold-hi); font-size: .75rem; letter-spacing: .04em; padding-block: 6px; text-align: center; border-bottom: 1px solid var(--line-soft); }
.top {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 25;
  background: color-mix(in srgb, var(--ink-0) 86%, transparent);
  backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line-soft);
}
.top-in { display: flex; align-items: center; gap: 28px; min-height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; white-space: nowrap; }
.logo-mark .bars { height: 18px; gap: 3px; } .logo-mark .bars i { width: 4px; }
.logo-word { font: 500 1.3rem/1 var(--font-display); letter-spacing: -.01em; }
.logo-word em { font-style: italic; color: var(--gold-hi); }
.nav { display: flex; gap: 2px; margin-left: auto; }
.nav a { padding: .5em .9em; border-radius: 999px; text-decoration: none; font-weight: 500; font-size: .9375rem; color: var(--paper-2); transition: color .2s; }
.nav a:hover { color: var(--paper); }
.nav a[aria-current="page"] { color: var(--gold-hi); }
@media (max-width: 860px) {
  .top-in { flex-wrap: wrap; gap: 0 12px; padding-block: 12px 0; min-height: 0; }
  .logo { margin-right: auto; }
  .nav { order: 3; width: 100%; margin: 8px 0 0 -.9em; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { flex: none; }
}
@media (max-width: 400px) { .top-cta { display: none; } }

/* ---------- covers ---------- */
.cover { position: relative; display: block; width: 100%; max-width: 100%; aspect-ratio: 2 / 3; border-radius: 3px 6px 6px 3px; overflow: hidden; box-shadow: var(--shadow); background: var(--ink-2); }
.cover img { width: 100%; height: 100%; object-fit: cover; }
.cover::after { content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background: linear-gradient(90deg, rgb(0 0 0 / .28) 0, rgb(255 255 255 / .10) 1.2%, transparent 3.5%), linear-gradient(180deg, rgb(255 255 255 / .05), transparent 30%); }
.cover-type { container-type: inline-size; background: linear-gradient(160deg, #13262d, #0a1418 70%); border: 1px solid var(--line); }
.ct-in { position: absolute; inset: 0; display: flex; flex-direction: column; padding: 9cqw 9cqw 8cqw 11cqw; gap: 8cqw; }
.ct-top { display: flex; justify-content: space-between; gap: 4cqw; font: 500 4.6cqw/1.2 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.ct-title { font: 500 11cqw/1.06 var(--font-display); color: var(--paper); letter-spacing: -.01em; text-wrap: balance; }
.ct-foot { margin-top: auto; display: flex; align-items: center; gap: 4cqw; font: 600 4.4cqw/1 var(--font-body); letter-spacing: .16em; text-transform: uppercase; color: var(--paper-2); }
.ct-foot .bars { height: 6cqw; } .ct-foot .bars i { width: 1.4cqw; }
.cover-xs { width: 56px; flex: none; }

/* ---------- hero ---------- */
.hero { position: relative; padding-block: clamp(48px, 8vw, 112px) clamp(48px, 7vw, 96px); overflow: hidden;
  background: radial-gradient(60% 70% at 85% 30%, rgb(217 180 90 / .10), transparent 70%), radial-gradient(50% 60% at 10% 0%, rgb(40 90 100 / .25), transparent 70%); }
.hero-in { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .95fr); gap: 56px; align-items: center; }
.hero-copy { display: flex; flex-direction: column; gap: 26px; min-width: 0; }
.hero h1 { font-size: clamp(2.6rem, 1.4rem + 4.6vw, 5.2rem); line-height: 1.02; }
.hero h1 em { display: block; }
.hero-fan { position: relative; height: 470px; }
.hero-fan .cover { position: absolute; width: 250px; top: 50%; left: 50%; transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.hero-fan .cover:nth-child(1) { transform: translate(-108%, -50%) rotate(-7deg) scale(.9); }
.hero-fan .cover:nth-child(2) { transform: translate(-50%, -52%); z-index: 2; }
.hero-fan .cover:nth-child(3) { transform: translate(8%, -46%) rotate(7deg) scale(.9); z-index: 1; }
.hero-fan:hover .cover:nth-child(1) { transform: translate(-122%, -50%) rotate(-10deg) scale(.9); }
.hero-fan:hover .cover:nth-child(3) { transform: translate(22%, -46%) rotate(10deg) scale(.9); }
@media (max-width: 900px) {
  .hero-in { grid-template-columns: 1fr; gap: 12px; }
  .hero-fan { order: -1; height: 280px; }
  .hero-fan .cover { width: 150px; }
}

.search { position: relative; max-width: 580px; }
.search input, .field input, .sub-form input, #gate-email, .select select {
  width: 100%; min-height: 54px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--ink-2); color: var(--paper); font: 400 1rem/1 var(--font-body); transition: border-color .2s, background .2s;
}
.search input::placeholder, .field input::placeholder, .sub-form input::placeholder, #gate-email::placeholder { color: var(--paper-3); }
.search input:focus, .field input:focus, .sub-form input:focus, #gate-email:focus, .select select:focus { outline: none; border-color: var(--gold); background: var(--ink-3); }
.search input { min-height: 60px; padding-left: 54px; font-size: 1.0625rem;
  background-image: radial-gradient(circle at 27px 27px, transparent 0 6.5px, var(--paper-3) 7px 8.5px, transparent 9px), linear-gradient(45deg, transparent 0 0);
  background-repeat: no-repeat; }
.search-results { position: absolute; left: 0; right: 0; top: calc(100% + 8px); z-index: 20; max-height: 62vh; overflow: auto;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 8px; }
.sr-group { font: 500 .7rem/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); padding: 12px 12px 6px; }
.sr-item { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border-radius: 10px; text-decoration: none; }
.sr-item:hover, .sr-item:focus-visible { background: var(--ink-3); }
.sr-item small { color: var(--paper-3); font-size: .8rem; }
.sr-none { padding: 14px 12px; color: var(--paper-3); }

.stats { display: flex; flex-wrap: wrap; gap: 0; margin: 4px 0 0; border-top: 1px solid var(--line); padding-top: 22px; }
.stats div { padding-right: 28px; margin-right: 28px; border-right: 1px solid var(--line); display: flex; flex-direction: column-reverse; gap: 2px; }
.stats div:last-child { border-right: 0; margin-right: 0; }
.stats dd { margin: 0; font: 400 2.1rem/1 var(--font-display); color: var(--paper); font-variant-numeric: tabular-nums lining-nums; }
.stats dt { font-size: .78rem; color: var(--paper-3); letter-spacing: .02em; }
@media (max-width: 480px) { .stats div { padding-right: 16px; margin-right: 16px; } .stats dd { font-size: 1.7rem; } }

/* ---------- sections ---------- */
.section { padding-block: clamp(48px, 7vw, 96px); }
.section + .section { border-top: 1px solid var(--line-soft); }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 36px; }
.sec-head > div { display: flex; flex-direction: column; gap: 10px; }
.more { font-weight: 600; font-size: .9375rem; text-decoration: none; white-space: nowrap; color: var(--gold-hi); }
.more::after { content: " →"; }
.more:hover { text-decoration: underline; }
.page-head { padding-block: clamp(48px, 8vw, 104px) 12px; background: radial-gradient(60% 100% at 80% 0%, rgb(217 180 90 / .07), transparent 70%); }
.page-head .wrap { display: flex; flex-direction: column; gap: 18px; }
.page-head + .section { border-top: 0; padding-top: 32px; }

.shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: 44px 28px; }
@media (max-width: 440px) { .shelf { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 16px; } }
.book { display: flex; flex-direction: column; gap: 12px; text-decoration: none; min-width: 0; }
.book .cover { transition: transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s; }
a.book:hover .cover { transform: translateY(-6px); box-shadow: 0 2px 6px rgb(0 0 0 / .35), 0 34px 60px -14px rgb(0 0 0 / .7); }
.book.is-quiet .cover { opacity: .78; }
.book-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; color: var(--paper-3); margin-top: 6px; }
.book-title { font: 500 1.0625rem/1.3 var(--font-display); color: var(--paper); }
a.book:hover .book-title { color: var(--gold-hi); }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr)); gap: 24px; }
.feature { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 28px; align-items: center; padding: 28px; border-radius: 18px;
  background: linear-gradient(150deg, var(--ink-2), var(--ink-1)); border: 1px solid var(--line-soft); text-decoration: none; transition: border-color .25s; }
.feature:hover { border-color: color-mix(in srgb, var(--gold) 45%, transparent); }
.feature-body { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.feature-title { font: 500 var(--step-2)/1.15 var(--font-display); }
.feature-sub { color: var(--paper-2); font-size: .9375rem; }
.feature-facts { color: var(--gold); }
@media (max-width: 520px) { .feature { grid-template-columns: 110px minmax(0, 1fr); gap: 18px; padding: 18px; } .feature-sub { display: none; } }

/* ---------- evidence ---------- */
.evidence { background: var(--ink-1); }
.ev-in { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 56px; align-items: start; }
.ev-head { display: flex; flex-direction: column; gap: 18px; }
.ev-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.ev-list li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 2px 18px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.ev-list .bars { grid-row: span 3; height: 22px; gap: 3px; margin-top: 2px; } .ev-list .bars i { width: 5px; }
.ev-label { font: 600 1rem/1.3 var(--font-body); }
.ev-ex { font: italic 400 1.0625rem/1.45 var(--font-display); color: var(--paper-2); }
.ev-src { color: var(--paper-3); font-size: .72rem; }
@media (max-width: 820px) { .ev-in { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- worksheets ---------- */
.ws-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 18px; }
.ws { display: grid; grid-template-columns: 92px minmax(0, 1fr); grid-template-rows: 1fr auto; gap: 14px 20px; padding: 18px; border-radius: 16px; background: var(--ink-2); border: 1px solid var(--line-soft); transition: border-color .25s; }
.ws:hover { border-color: var(--line); }
.ws-thumb { grid-row: span 2; display: block; align-self: start; border-radius: 3px; overflow: hidden; box-shadow: 0 1px 2px rgb(0 0 0 / .4), 0 10px 22px -8px rgb(0 0 0 / .7); }
.ws-thumb img { width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; object-position: top; filter: saturate(.9) brightness(.94); }
.ws-body { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.ws-kind { font: 500 .7rem/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.ws-title { font: 500 1.125rem/1.25 var(--font-display); }
.ws-meta { font-size: .8125rem; color: var(--paper-3); }
.ws-dl { justify-self: start; align-self: end; }
.lock { width: 10px; height: 8px; border-radius: 2px; background: currentColor; position: relative; margin-top: 4px; }
.lock::before { content: ""; position: absolute; left: 2px; bottom: 6px; width: 6px; height: 6px; border: 1.6px solid currentColor; border-bottom: 0; border-radius: 4px 4px 0 0; box-sizing: border-box; }
.is-unlocked .lock { display: none; }

/* ---------- tools ---------- */
.tools { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.field { flex: 1 1 280px; min-width: 0; }
.select { flex: 1 1 240px; min-width: 0; position: relative; }
.select select { appearance: none; -webkit-appearance: none; padding-right: 46px; text-overflow: ellipsis; cursor: pointer; }
.select::after { content: ""; position: absolute; right: 22px; top: 50%; width: 7px; height: 7px; border: solid var(--paper-2); border-width: 0 1.5px 1.5px 0; transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.count { color: var(--paper-3); margin: 10px 0 24px; font-variant-numeric: tabular-nums; }
.empty { padding: 36px 0; color: var(--paper-3); }

/* ---------- library groups ---------- */
.lib-book { padding-top: 28px; }
.lib-book + .lib-book { margin-top: 36px; border-top: 1px solid var(--line-soft); }

/* ---------- sources ---------- */
.src-book { padding-top: 28px; }
.src-book + .src-book { margin-top: 28px; border-top: 1px solid var(--line-soft); }
.src-book-head { display: flex; gap: 18px; align-items: center; margin-bottom: 18px; }
.src-book-head h2 { font-size: var(--step-2); margin: 4px 0; }
.src-book-head h2 a { text-decoration: none; }
.src-book-head h2 a:hover { color: var(--gold-hi); }
.ch { border-top: 1px solid var(--line-soft); }
.ch:last-of-type { border-bottom: 1px solid var(--line-soft); }
.ch summary { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 12px; align-items: baseline; padding: 16px 0; cursor: pointer; list-style: none; }
.ch summary::-webkit-details-marker { display: none; }
.ch-n { color: var(--gold); }
.ch-t { font: 500 1.0625rem/1.35 var(--font-display); }
.ch-c { color: var(--paper-3); padding-right: 22px; position: relative; }
.ch-c::after { content: ""; position: absolute; right: 4px; top: 4px; width: 7px; height: 7px; border: solid var(--paper-3); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); transition: transform .2s; }
.ch[open] .ch-c::after { transform: translateY(3px) rotate(-135deg); }
.ch summary:hover .ch-t { color: var(--gold-hi); }
.src-list { list-style: none; margin: 0 0 18px; padding: 0 0 0 76px; display: flex; flex-direction: column; gap: 14px; }
.src { display: flex; flex-direction: column; gap: 2px; max-width: 82ch; }
.src-topic { font-weight: 600; font-size: .9375rem; }
.src-cite { color: var(--paper-2); font-size: .9375rem; line-height: 1.6; overflow-wrap: anywhere; }
.src-cite em { color: var(--paper); }
.src-cite a { color: var(--gold-hi); font-family: var(--font-mono); font-size: .8rem; }
@media (max-width: 600px) { .ch summary { grid-template-columns: 52px minmax(0, 1fr) auto; } .src-list { padding-left: 0; } }

/* ---------- book page ---------- */
.book-hero { padding-block: clamp(40px, 6vw, 88px); background: radial-gradient(55% 80% at 20% 30%, rgb(217 180 90 / .09), transparent 70%); }
.book-hero-in { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); align-items: center; }
.book-info { display: flex; flex-direction: column; gap: 20px; align-items: flex-start; min-width: 0; }
.book-info h1 { font-size: clamp(2.2rem, 1.3rem + 3.6vw, 4.2rem); }
.subtitle { font: italic 400 var(--step-1)/1.5 var(--font-display); color: var(--paper-2); max-width: 54ch; font-size: 1.25rem; }
.by { color: var(--paper-3); font-size: .9375rem; letter-spacing: .02em; }
.crumbs { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; color: var(--paper-3); font-size: .875rem; }
.crumbs a { text-decoration: none; } .crumbs a:hover { color: var(--paper); }
.buy { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 6px; }
.asin { color: var(--paper-3); }
@media (max-width: 720px) {
  .book-hero-in { grid-template-columns: 1fr; }
  .book-hero-in > .cover { width: 58%; max-width: 250px; justify-self: center; }
}
.about-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 56px; align-items: start; }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }
.prose { display: flex; flex-direction: column; gap: 18px; max-width: 68ch; color: var(--paper-2); }
.prose h2 { font-size: var(--step-2); margin-top: 12px; }
.prose h3 { margin-top: 10px; color: var(--paper); }
.parts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.parts li { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--line); font: 500 1.0625rem/1.4 var(--font-display); color: var(--paper); }
.parts .mono { color: var(--gold); padding-top: 3px; }
.about-head { display: flex; flex-direction: column; gap: 18px; margin-bottom: 40px; max-width: 980px; }
.pull { margin: 0; font: italic 400 clamp(1.7rem, 1.1rem + 2.4vw, 3rem)/1.18 var(--font-display); color: var(--paper); text-wrap: balance; }
.pull .q::before { content: "“"; color: var(--gold); margin-right: .05em; }
.pull .q::after { content: "”"; color: var(--gold); }
.pull cite { display: block; margin-top: 14px; font-style: normal; color: var(--paper-3); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; }
.insights { list-style: none; margin: 4px 0 8px; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 14px; }
.insights li { display: flex; flex-direction: column; gap: 6px; padding: 20px 22px; border-radius: 14px; background: var(--ink-2); border: 1px solid var(--line-soft); border-top: 2px solid var(--gold); }
.insights .mono { color: var(--gold); font-size: .72rem; }
.insights strong { font: 500 1.125rem/1.3 var(--font-display); color: var(--paper); }
.insights span:last-child { color: var(--paper-2); font-size: .9375rem; line-height: 1.55; }
.look { background: var(--ink-1); }
.look-hint { font-size: .75rem; }
.pages { list-style: none; margin: 0; padding: 4px 0 18px; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(170px, 210px); gap: 22px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.pages li { display: flex; flex-direction: column; gap: 10px; scroll-snap-align: start; }
.page { display: block; padding: 0; border: 0; background: #fff; border-radius: 2px; overflow: hidden; cursor: zoom-in; box-shadow: 0 2px 4px rgb(0 0 0 / .4), 0 18px 34px -12px rgb(0 0 0 / .75); transition: transform .3s cubic-bezier(.2,.7,.2,1); }
.page:hover { transform: translateY(-4px); }
.page img { width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; object-position: top; }
.page-cap { font-size: .8125rem; color: var(--paper-3); }
.lightbox { position: fixed; inset: 0; z-index: 60; background: rgb(5 10 13 / .92); display: grid; place-items: center;
  padding: max(16px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) max(16px, env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); }
.lb-inner { position: relative; display: flex; flex-direction: column; align-items: center; gap: 12px; max-height: 100%; }
.lb-inner img { max-width: min(92vw, 640px); max-height: calc(100vh - 110px); width: auto; height: auto; background: #fff; box-shadow: var(--shadow); }
.lb-cap { color: var(--paper-2); font-size: .8rem; }
.lb-btn { position: fixed; width: 48px; height: 48px; border-radius: 999px; border: 1px solid var(--line); background: var(--ink-2); color: var(--paper); font-size: 1.8rem; line-height: 1; cursor: pointer; }
.lb-btn:hover { border-color: var(--gold); color: var(--gold-hi); }
.lb-prev { left: max(16px, env(safe-area-inset-left, 0px)); top: 50%; transform: translateY(-50%); }
.lb-next { right: max(16px, env(safe-area-inset-right, 0px)); top: 50%; transform: translateY(-50%); }
.lb-x { right: max(16px, env(safe-area-inset-right, 0px)); top: max(16px, env(safe-area-inset-top, 0px)); }
@media (max-width: 600px) { .lb-prev, .lb-next { top: auto; bottom: max(16px, env(safe-area-inset-bottom, 0px)); transform: none; } .lb-inner img { max-height: calc(100vh - 170px); } }
.cover-view { display: flex; flex-direction: column; gap: 16px; align-items: center; width: 100%; }
.cv-main { display: block; width: 100%; padding: 0; border: 0; background: none; cursor: zoom-in; border-radius: 6px; }
.cv-tabs { display: flex; gap: 12px; }
.cv-tab { display: flex; align-items: center; gap: 10px; padding: 6px 14px 6px 6px; border-radius: 12px; border: 1px solid var(--line); background: var(--ink-2); color: var(--paper-2); font: 500 .8125rem/1 var(--font-body); cursor: pointer; transition: border-color .2s, color .2s; }
.cv-tab img { width: 30px; height: 45px; object-fit: cover; border-radius: 2px; }
.cv-tab:hover { color: var(--paper); border-color: var(--paper-3); }
.cv-tab.is-on { border-color: var(--gold); color: var(--gold-hi); }
@media (max-width: 720px) { .book-hero-in > .cover-view { width: 62%; max-width: 260px; justify-self: center; } }
.book-side { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 96px; }
.numbers, .ev-mix { padding: 24px 26px; border-radius: 16px; background: var(--ink-2); border: 1px solid var(--line-soft); display: flex; flex-direction: column; gap: 16px; }
.num-grid { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 18px 16px; }
.num-grid div { display: flex; flex-direction: column; gap: 4px; padding-top: 12px; border-top: 1px solid var(--line); }
.num-grid dd { margin: 0; font: 400 2.25rem/1 var(--font-display); color: var(--paper); font-variant-numeric: lining-nums tabular-nums; }
.num-grid dt { font-size: .78rem; color: var(--paper-3); line-height: 1.35; }
.big-nums { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: auto 1fr; column-gap: 18px; }
.big-nums li { grid-column: 1 / -1; display: grid; grid-template-columns: subgrid; gap: 16px; align-items: center; padding: 14px 0; border-top: 1px solid var(--line); }
.big-nums li:first-child { border-top: 0; padding-top: 2px; }
.bn { font: 800 clamp(2rem, 1.6rem + 1vw, 2.5rem)/1 var(--font-body); letter-spacing: -.03em; color: var(--gold); font-variant-numeric: lining-nums; white-space: nowrap; }
.bl { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.bl strong { font: 700 .78rem/1.3 var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--paper); }
.bl span { font-size: .8125rem; color: var(--paper-3); line-height: 1.4; }
.mix-bar { display: flex; height: 12px; border-radius: 999px; overflow: hidden; gap: 2px; background: var(--ink-1); }
.mix-bar span { display: block; min-width: 3px; }
.mix-4 { background: var(--gold); } .mix-3 { background: color-mix(in srgb, var(--gold) 62%, var(--ink-2)); }
.mix-2 { background: color-mix(in srgb, var(--paper-3) 70%, var(--ink-2)); } .mix-1 { background: color-mix(in srgb, var(--paper-3) 35%, var(--ink-2)); }
.mix-legend { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.mix-legend li { display: grid; grid-template-columns: 22px 1fr auto; gap: 10px; align-items: center; font-size: .875rem; color: var(--paper-2); }
.mix-legend .mono { color: var(--paper); }
.mix-note { font-size: .78rem; line-height: 1.5; }
@media (max-width: 820px) { .book-side { position: static; } }
.highlights { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.highlights li { position: relative; padding-left: 22px; }
.highlights li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 7px; height: 7px; background: var(--gold); transform: rotate(45deg); }
.highlights strong { color: var(--paper); font-weight: 600; }
.facts { margin: 0; padding: 26px 28px; border-radius: 16px; background: var(--ink-2); border: 1px solid var(--line-soft); display: flex; flex-direction: column; gap: 16px; }
.facts div { display: flex; flex-direction: column; gap: 2px; }
.facts dt { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--paper-3); }
.facts dd { margin: 0; font: 400 1.0625rem/1.4 var(--font-display); color: var(--paper); }
.updates { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 56px; }
.updates > div:first-child { display: flex; flex-direction: column; gap: 16px; }
.updates h2 { font-size: var(--step-2); }
.watch { padding: 24px 26px; border-left: 2px solid var(--gold); background: var(--gold-wash); border-radius: 0 12px 12px 0; }
.watch ul { margin: 12px 0 0; padding-left: 18px; color: var(--paper-2); display: flex; flex-direction: column; gap: 8px; }
@media (max-width: 820px) { .updates { grid-template-columns: 1fr; gap: 28px; } }
.copyable { display: inline-flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.copyable code { user-select: all; color: var(--paper); font-size: .875rem; }

/* ---------- author + newsletter ---------- */
.author-band { background: var(--ink-1); }
.author-in { display: flex; flex-direction: column; gap: 22px; align-items: flex-start; max-width: 900px; }
.author-in blockquote { margin: 0; font: italic 400 clamp(1.6rem, 1.1rem + 2vw, 2.6rem)/1.25 var(--font-display); color: var(--paper); text-wrap: balance; }
.news-in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: center;
  padding: clamp(28px, 4vw, 52px); border-radius: 24px; border: 1px solid color-mix(in srgb, var(--gold) 30%, transparent);
  background: radial-gradient(80% 140% at 100% 0%, rgb(217 180 90 / .14), transparent 60%), var(--ink-2); }
.news-in > div { display: flex; flex-direction: column; gap: 12px; }
.news-in h2 { font-size: var(--step-3); }
@media (max-width: 820px) { .news-in { grid-template-columns: 1fr; gap: 24px; } }
.section.news { border-top: 0; }
.sub-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; width: 100%; }
.sub-form .form-msg { grid-column: 1 / -1; }
@media (max-width: 440px) { .sub-form { grid-template-columns: 1fr; } }
.form-msg { font-size: .875rem; color: var(--gold-hi); min-height: 1.2em; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line-soft); padding-block: 56px 44px; background: var(--ink-1); }
.foot-in { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 28px 48px; }
.foot-brand { display: flex; flex-direction: column; gap: 12px; }
.motto { font: italic 400 1.125rem/1.4 var(--font-display); color: var(--paper-2); }
.foot-nav { display: flex; gap: 10px 26px; flex-wrap: wrap; align-content: flex-start; }
.foot-nav a { text-decoration: none; color: var(--paper-2); font-size: .9375rem; }
.foot-nav a:hover { color: var(--gold-hi); }
.disclaimer, .copy { grid-column: 1 / -1; color: var(--paper-3); font-size: .8125rem; max-width: 86ch; }
.disclaimer { padding-top: 24px; border-top: 1px solid var(--line-soft); }
@media (max-width: 680px) { .foot-in { grid-template-columns: 1fr; } }

/* ---------- email gate ---------- */
.gate { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; background: var(--scrim); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  padding: max(16px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) max(16px, env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); }
.gate-card { position: relative; width: 100%; max-width: 480px; background: var(--ink-2); border: 1px solid var(--line); border-radius: 22px; padding: 36px 30px 28px; box-shadow: var(--shadow); }
.gate-ask, .gate-done { display: flex; flex-direction: column; gap: 14px; }
.gate-done { align-items: flex-start; }
.gate h2 { font-size: var(--step-2); }
.gate-file { font: italic 400 1.0625rem/1.4 var(--font-display); color: var(--gold-hi); }
.gate-file:empty { display: none; }
#gate-form { display: flex; flex-direction: column; gap: 10px; }
.fine { font-size: .8125rem; color: var(--paper-3); }
.gate-x { position: absolute; top: 12px; right: 14px; width: 40px; height: 40px; border: 0; background: none; color: var(--paper-2); font-size: 1.7rem; line-height: 1; cursor: pointer; border-radius: 999px; }
.gate-x:hover { background: var(--ink-3); color: var(--paper); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}