:root {
  --brand-primary: #16384B;
  --brand-accent:  #8B6237;
  --brand-bg:      #F8F5ED;
  --brand-ink:     #1C2A31;

  --paper:      var(--brand-bg);
  --paper-warm: #F1EBDD;
  --paper-deep: #E8DEC9;
  --ink:        var(--brand-ink);
  --ink-soft:   #2B3B43;
  --ink-mid:    #41535A;
  --ink-mute:   #607078;
  --rule:       #CCC2AD;
  --ox:         var(--brand-primary);
  --ox-dk:      color-mix(in srgb, var(--brand-primary) 78%, #000);
  --gold:       var(--brand-accent);
  --gold-soft:  #D4B687;
  --sage:       #47746E;
  --sage-dk:    #28544F;

  --serif: 'Fraunces', 'EB Garamond', 'Iowan Old Style', Georgia, serif;
  --sans:  'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --mono:  'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

  --container: 1240px;
  --gutter: 32px;
  --shadow-cover: 0 32px 48px -25px rgba(17,39,50,.48), 0 12px 26px -13px rgba(17,39,50,.35);
  --shadow-page:  0 24px 50px -22px rgba(17,39,50,.26);
}
@media (max-width: 700px) { :root { --gutter: 22px; } }

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); font-family: var(--sans);
       font-size: 17px; line-height: 1.62; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.wrap.narrow { max-width: 900px; }
.center { text-align: center; }
.dim { color: var(--ink-mute); font-size: .85rem; line-height: 1.7; }

h1 { font-family: var(--serif); font-size: clamp(2.35rem, 4.4vw, 3.65rem);
     font-weight: 500; line-height: 1.08; letter-spacing: -.035em;
     margin: .35rem 0 1.15rem; max-width: 14ch; }
h1 .hl { color: var(--ox); font-style: italic; box-shadow: none; font-weight: 500; }
h2 { font-family: var(--serif); font-size: clamp(2rem, 3.25vw, 2.85rem);
     font-weight: 500; line-height: 1.13; letter-spacing: -.025em;
     margin: .3rem 0 1.2rem; max-width: 24ch; }
h3 { font-family: var(--serif); font-size: 1.28rem; font-weight: 600; letter-spacing: -.015em; }
em { font-style: italic; color: var(--ox); }
.eyebrow, .secnum, .stack-h, .tb-note, .tb-cta, .price-note {
  font-family: var(--mono); font-size: .68rem; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; }
.eyebrow { color: var(--ink-mute); }
.secnum  { color: var(--gold); margin-bottom: .7rem; }
.lede { font-size: 1.08rem; color: var(--ink-mid); max-width: 61ch; margin-bottom: 1.8rem; }
.lede.narrow-l { max-width: 70ch; }

.btn { display: inline-flex; align-items: center; gap: .6rem;
       font-family: var(--mono); font-weight: 700; font-size: .7rem;
       letter-spacing: .1em; text-transform: uppercase; text-decoration: none;
       border: 1px solid transparent; border-radius: 3px; padding: 16px 22px;
       transition: transform .12s ease, background .12s ease, box-shadow .12s ease; }
.btn::after { content: '→'; transition: transform .12s ease; }
.btn:hover::after { transform: translateX(4px); }
.btn-primary { background: var(--ox); border-color: var(--ox); color: var(--paper); }
.btn-primary:hover { background: var(--ox-dk); border-color: var(--ox-dk);
                     transform: translateY(-1px);
                     box-shadow: 0 8px 18px -6px rgba(17,39,50,.42); }
.btn-ghost { background: transparent; border-color: var(--rule); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.btn-big { display: flex; width: 100%; justify-content: center;
           padding: 17px 24px; font-size: .72rem; }

.sticky-top { position: sticky; top: 0; z-index: 50; }
.topbar { display: flex; align-items: center; min-width: 0;
          gap: 1.2rem; padding: .65rem var(--gutter);
          background: color-mix(in srgb, var(--paper) 92%, transparent);
          backdrop-filter: blur(6px); border-bottom: 1px solid var(--rule); }
.tb-name { font-family: var(--serif); font-size: 1.04rem; font-weight: 600;
           letter-spacing: -.01em; line-height: 1.2; }
.tb-note { color: var(--ink-mute); flex: 1; overflow: hidden;
           white-space: nowrap; text-overflow: ellipsis; }
.tb-nav { flex: 1; display: flex; gap: 1.4rem; justify-content: center;
          font-family: var(--mono); font-size: .63rem; letter-spacing: .1em;
          text-transform: uppercase; }
.tb-nav a { color: var(--ink-mid); text-decoration: none; }
.tb-nav a:hover { color: var(--ox); }
.topbar button.tb-cta { flex: 0 1 auto; min-width: 0; color: var(--paper);
          background: var(--ox); text-decoration: none; border-radius: 3px;
          font: 700 .69rem/1.2 var(--mono); letter-spacing: .09em;
          text-transform: uppercase; white-space: nowrap; padding: .7rem .95rem; }

.launch { background: var(--ink); color: var(--paper-warm); text-align: center;
          padding: .5rem var(--gutter); font-family: var(--mono);
          font-size: .67rem; letter-spacing: .13em; text-transform: uppercase; }
.launch b { color: var(--gold-soft); font-variant-numeric: tabular-nums; }

.hero { padding: clamp(3.4rem, 6vw, 5rem) 0 4.4rem;
        background: linear-gradient(128deg, var(--paper-warm) 0%, var(--paper) 65%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .84fr);
             gap: clamp(2.5rem, 5vw, 5rem); align-items: center; }
.sub { font-size: 1.12rem; color: var(--ink-mid); max-width: 51ch; margin-bottom: 1.35rem; }
.hero-ctas { display: flex; gap: .8rem; flex-wrap: wrap; margin-bottom: 1.9rem; }
.hero-stats { display: flex; gap: 1.8rem; border-top: 1px solid var(--rule);
              padding-top: 1.15rem; margin-bottom: 1rem; }
.hero-stats b { display: block; font-family: var(--serif); font-size: 1.35rem;
                font-weight: 500; letter-spacing: -.02em; }
.hero-stats span { font-family: var(--mono); font-size: .57rem; letter-spacing: .1em;
                   text-transform: uppercase; color: var(--ink-mute); }
.kicker { font-family: var(--serif); font-size: .92rem; font-style: italic;
          line-height: 1.55; color: var(--ink-mid); max-width: 55ch; }
.hero-book { position: relative; isolation: isolate; min-width: 0; }
.hero-book::before { content: ''; position: absolute; z-index: -1; top: .25rem;
  left: 50%; width: min(310px, 78%); aspect-ratio: 3/4;
  transform: translateX(-50%) rotate(3deg);
  background: #D6E1DF; border: 1px solid #A8B8B7;
  box-shadow: 0 18px 32px -24px rgba(17,39,50,.45); }
.hero-book > img { position: relative; width: min(300px, 75%); margin: 0 auto;
  border-radius: 2px; transform: rotate(-2deg); box-shadow: var(--shadow-cover); }
.hero-book figcaption { text-align: center; font-family: var(--mono); font-size: .68rem;
  letter-spacing: .16em; text-transform: uppercase; color: var(--ink-mute); margin-top: 1.1rem; }

.sec { padding: clamp(4rem, 6vw, 6rem) 0; scroll-margin-top: 6.5rem; }
.sec.alt { background: var(--paper-warm); }

.choice-ledger { max-width: 760px; margin: .25rem auto 2.2rem;
  padding: clamp(1.3rem, 3vw, 2rem); background: #FFFDF8;
  border: 1px solid var(--rule); border-top: 4px solid var(--ox);
  box-shadow: 0 18px 34px -27px rgba(17,39,50,.4); }
.choice-ledger-label { margin-bottom: 1.2rem; font-family: var(--mono);
  font-size: .62rem; font-weight: 700; line-height: 1.5;
  letter-spacing: .13em; text-transform: uppercase; color: var(--gold); }
.choice-ledger-row { display: grid; grid-template-columns: minmax(0,1fr) auto;
  align-items: baseline; gap: 1rem; padding: .56rem 0;
  border-bottom: 1px solid var(--rule); font-size: .94rem; }
.choice-ledger-row strong { font-family: var(--mono); font-size: 1rem;
  font-variant-numeric: tabular-nums; color: var(--ink); }
.choice-ledger-total { color: var(--ox); font-weight: 700; }
.choice-ledger-total strong { color: var(--ox); }
.choice-ledger-result { display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; margin: 1.1rem 0 .75rem; padding: .95rem 1.2rem;
  background: var(--ox); color: var(--paper); font-family: var(--serif);
  font-size: 1.16rem; line-height: 1.25; }
.choice-ledger-result strong { font-family: var(--serif); font-size: 2rem;
  font-weight: 600; line-height: 1; font-variant-numeric: tabular-nums; }
.choice-ledger-note { max-width: 62ch; font-size: .84rem; line-height: 1.5;
  color: var(--ink-mid); }
.math-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-bottom: 2rem; }
.math-col { padding: 1.25rem 1.4rem; border-radius: 2px; }
.math-col h3 { margin-bottom: .5rem; }
.math-col p { font-size: .94rem; line-height: 1.55; }
.math-col.before { background: var(--paper-deep); border: 1px solid var(--rule); }
.math-col.after { background: color-mix(in srgb, var(--sage) 12%, var(--paper));
                  border: 1px solid color-mix(in srgb, var(--sage) 40%, var(--rule)); }
.math-wrap table { width: 100%; border-collapse: collapse; table-layout: fixed; margin: 1.4rem 0; }
.math-wrap th { font-family: var(--mono); font-size: .62rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-mute); text-align: right;
  padding: .7rem .8rem; border-bottom: 2px solid var(--ink); }
.math-wrap th:first-child { text-align: left; }
.math-wrap th:first-child, .math-wrap td:first-child { width: 22%; }
.math-wrap th:nth-child(2), .math-wrap td:nth-child(2) { width: 32%; }
.math-wrap th:last-child, .math-wrap td:last-child { width: 46%; }
.math-wrap td { padding: .75rem .8rem; border-bottom: 1px solid var(--rule);
                text-align: right; font-size: .9rem; line-height: 1.42; color: var(--ink-mid); }
.math-wrap td:first-child { text-align: left; color: var(--ink); font-weight: 600; }

.math-wrap td:nth-child(2) { color: var(--ox); }
.math-wrap td.after { color: var(--sage-dk); font-weight: 600;
                      background: color-mix(in srgb, var(--sage) 8%, transparent); }
.math-wrap th:last-child { color: var(--sage-dk); }
.math-wrap th:nth-child(2) { color: var(--ox); }
.math-col.before { border-left: 3px solid color-mix(in srgb, var(--ox) 55%, var(--rule)); }
.math-col.after  { border-left: 3px solid var(--sage); }

.hl { font-weight: 600; color: var(--ink);
      box-shadow: inset 0 -.45em 0 color-mix(in srgb, var(--gold) 34%, transparent); }
.publisher-line { font-size: .85rem; color: var(--ink-mute); margin-top: .8rem; }
.publisher-line strong { color: var(--ink); }
.publisher-mark { font-family: var(--mono); font-size: .8rem; letter-spacing: .24em;
                  text-transform: uppercase; color: var(--ink); margin-bottom: .9rem; }
.math-net { font-family: var(--serif); font-size: 1.08rem; line-height: 1.5;
  padding: 1rem 1.3rem; border-radius: 0 3px 3px 0;
  background: color-mix(in srgb, var(--gold) 10%, var(--paper));
  border-left: 3px solid var(--gold); }

.sec-cta { margin-top: 2rem; }

.about-grid { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr);
              gap: clamp(2.5rem, 6vw, 5rem); align-items: center; }
.about-photo { padding: .7rem; background: var(--paper-warm);
               border: 1px solid var(--rule); box-shadow: var(--shadow-page); }
.about-photo img { border-radius: 1px; }
.bio { max-width: 58ch; color: var(--ink-mid); white-space: pre-line; }

.offer { background: var(--paper-warm); }
.offer-grid { display: grid; grid-template-columns: minmax(280px, .78fr) minmax(0,1.22fr);
              gap: clamp(2.5rem, 5vw, 4.5rem); align-items: start; margin-top: 2rem; }
.cover-frame { width: 100%; max-width: 480px; margin: 0 auto; padding: 10px;
               background: var(--paper); border: 1px solid var(--rule);
               box-shadow: var(--shadow-page); transform: rotate(-1deg); }
.cover-frame img { width: 100%; }
.offer-card { background: var(--paper); border: 1px solid var(--rule);
              border-radius: 2px; padding: clamp(1.4rem, 3vw, 2.4rem);
              box-shadow: 0 20px 36px -31px rgba(17,39,50,.32); }
.offer-title { font-size: 1.65rem; font-weight: 600; letter-spacing: -.022em;
               line-height: 1.2; margin: .3rem 0 .8rem; }
.price-line { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
              padding: 18px 0; border-top: 1px solid var(--rule);
              border-bottom: 1px solid var(--rule); margin-bottom: 26px; }
.price-now { font-family: var(--serif); font-size: 2.8rem; font-weight: 500;
             font-style: italic; color: var(--ox); line-height: 1; letter-spacing: -.02em; }
.price-was { font-family: var(--mono); font-size: .94rem; color: var(--ink-mute);
             text-decoration: line-through; }
.price-note { color: var(--ox); letter-spacing: .24em; }
.offer-tag { font-family: var(--mono); font-size: .74rem; letter-spacing: .24em;
             text-transform: uppercase; color: var(--ox); font-weight: 500;
             margin-bottom: 18px; display: block; }
.offer-lede { font-size: .98rem; color: var(--ink-soft); line-height: 1.55; margin-bottom: 20px; }
.payback { font-family: var(--serif); font-size: 1.02rem; color: var(--ink);
           font-style: italic; line-height: 1.48;
           background: color-mix(in srgb, var(--sage) 12%, var(--paper));
           border-left: 3px solid var(--sage); padding: .9rem 1.1rem;
           border-radius: 0 6px 6px 0; margin-bottom: 1.6rem; }

.payback:empty, .offer-tag:empty { display: none; }
.stack-h { color: var(--ox); letter-spacing: .24em; margin-bottom: .7rem; }
.addon-row { display: flex; justify-content: space-between; gap: 1.25rem; align-items: baseline;
             padding: .75rem 0; border-bottom: 1px solid var(--rule); }
.addon-row strong { font-family: var(--serif); font-size: 1.02rem;
                    line-height: 1.3; font-weight: 600; display: block; }
.bonus-tag { display: inline-block; font-family: var(--mono); font-size: .6rem;
             font-weight: 700; letter-spacing: .2em; text-transform: uppercase;
             color: var(--paper); background: var(--gold);
             padding: .18rem .5rem; border-radius: 2px; margin-bottom: .4rem; }
.addon-row p { font-size: .86rem; line-height: 1.5; color: var(--ink-mid); margin-top: .2rem; }
.addon-price { font-family: var(--mono); font-size: .84rem; color: var(--ink-mute); white-space: nowrap; }
.stack-total { display: flex; justify-content: space-between; font-weight: 600;
               padding: 1.1rem 0 .4rem; font-size: 1.08rem; }
.pay-today { display: flex; justify-content: space-between; align-items: baseline;
             background: color-mix(in srgb, var(--gold) 15%, var(--paper));
             border: 1px solid color-mix(in srgb, var(--gold) 42%, var(--rule));
             border-radius: 6px; padding: 1rem 1.3rem; margin: 1.1rem 0 1.7rem; }
.pay-today span { font-style: italic; font-size: 1.2rem; color: var(--ink); }

.pay-today b.pay-figure { font-family: var(--mono); font-size: 1.6rem;
                          display: inline-block; white-space: nowrap; }
.pay-today .pay-was { color: color-mix(in srgb, var(--ink-mute) 88%, var(--paper));
                      font-size: 1.06rem; font-weight: 400; margin-right: .62rem;
                      text-decoration: line-through;
                      text-decoration-thickness: .07em;
                      text-decoration-color: color-mix(in srgb, var(--ink-mute) 70%, transparent); }
.pay-today .pay-was:empty { display: none; margin-right: 0; }
.pay-today .pay-now { color: var(--ox); font-weight: 600; letter-spacing: -.01em; }
.delivery, .guarantee { font-size: .95rem; color: var(--ink-mid); margin-top: .9rem; }

#faq details { border-bottom: 1px solid var(--rule); padding: 1.1rem 0; }
#faq summary { font-weight: 600; font-size: 1.15rem; letter-spacing: -.015em;
               cursor: pointer; list-style: none; }
#faq summary::-webkit-details-marker { display: none; }
#faq summary::after { content: '+'; float: right; font-family: var(--mono); color: var(--gold); }
#faq details[open] summary::after { content: '\2013'; }
#faq details p { padding-top: .7rem; color: var(--ink-mid); }

.close { background: var(--ink); color: var(--paper); }
.close h2 { color: var(--paper); font-size: clamp(2.2rem, 4vw, 3.35rem); max-width: 18ch;
            margin: 0 auto 1.2rem; }
.close .lede { color: color-mix(in srgb, var(--paper) 72%, var(--ink));
               margin-left: auto; margin-right: auto; }
.close .btn-big { width: auto; }

.close .hl, .close h2 .hl { color: var(--paper);
      box-shadow: inset 0 -.45em 0 color-mix(in srgb, var(--gold) 55%, transparent); }
.close em { color: color-mix(in srgb, var(--gold) 70%, var(--paper)); }

footer { padding: 3rem 0 4rem; border-top: 1px solid var(--rule);
         background: var(--ink); color: var(--paper); }
footer .dim { color: color-mix(in srgb, var(--paper) 74%, var(--ink)); }
footer .publisher-mark { color: color-mix(in srgb, var(--paper) 90%, var(--ink)); }

.purchase-notice { position: fixed; left: max(16px, env(safe-area-inset-left));
                   bottom: max(16px, env(safe-area-inset-bottom)); z-index: 40;
                   width: min(360px, calc(100vw - 32px)); display: grid;
                   grid-template-columns: 38px 1fr 28px; gap: 11px; align-items: center;
                   padding: 13px 12px 13px 13px; border: 1px solid var(--rule);
                   border-left: 3px solid var(--sage); border-radius: 6px;
                   background: var(--paper-warm); color: var(--ink);
                   box-shadow: 0 13px 34px rgba(21,17,11,.2);
                   opacity: 0; transform: translate3d(0,14px,0);
                   transition: opacity .26s ease, transform .26s ease; }
.purchase-notice[hidden] { display: none; }
.purchase-notice.is-visible { opacity: 1; transform: translate3d(0,0,0); }
.purchase-notice-icon { display: grid; place-items: center; width: 36px; height: 36px;
                        border-radius: 50%; background: var(--sage); color: var(--paper);
                        font-family: var(--mono); font-size: .9rem; font-weight: 700; }
.purchase-notice-body { min-width: 0; }
.purchase-notice-body p { margin: 0; font-size: .94rem; line-height: 1.32; }
.purchase-notice-body strong { font-family: var(--serif); font-style: italic;
                                font-weight: 600; color: var(--ox); }
.purchase-notice-meta { margin-top: 3px !important; font-family: var(--mono);
                        font-size: .65rem !important; letter-spacing: .09em;
                        text-transform: uppercase; color: var(--ink-mute); }
.purchase-notice-close { align-self: start; width: 28px; height: 28px; border: 0;
                         background: transparent; color: var(--ink-mute); cursor: pointer;
                         font-size: 1.2rem; line-height: 1; border-radius: 3px; }
.purchase-notice-close:hover, .purchase-notice-close:focus-visible {
  color: var(--ink); background: color-mix(in srgb, var(--rule) 25%, transparent); }
@media (prefers-reduced-motion: reduce) {
  .purchase-notice { transition: none; transform: none; }
}

dialog#exit-modal { margin: auto; border: 1px solid var(--rule); border-radius: 8px;
                    background: var(--paper); color: var(--ink); width: min(32rem, calc(100vw - 2rem));
                    max-width: none; padding: 2.2rem 2.4rem; text-align: center; }
dialog#exit-modal::backdrop { background: rgba(21,17,11,.6); }
dialog#exit-modal h2 { font-size: 1.9rem; margin-bottom: .9rem; }
dialog#exit-modal p { color: var(--ink-mid); margin: 0 0 1.5rem; }
.modal-cover { width: 120px; aspect-ratio: 3/4; margin: 0 auto 22px;
              box-shadow: var(--shadow-cover); }
.modal-cover img { width: 100%; height: 100%; object-fit: contain; }
.modal-price { display: flex; align-items: baseline; justify-content: center; gap: 14px;
               padding: 14px 0; border-top: 1px solid var(--rule);
               border-bottom: 1px solid var(--rule); margin-bottom: 14px; }
.modal-price .price-now { font-size: 2.6rem; }
.modal-clock { font-family: var(--mono); font-size: .72rem; letter-spacing: .16em;
               text-transform: uppercase; color: var(--ink-mute); margin-bottom: 16px; }
.modal-clock b { color: var(--ox); font-variant-numeric: tabular-nums; }
.modal-clock[hidden], .modal-price:empty { display: none; }
.modal-x { display: block; margin: 16px auto 0; background: none; border: none;
           font-family: var(--mono); font-size: .72rem; letter-spacing: .18em;
           text-transform: uppercase; color: var(--ink-mute); cursor: pointer;
           text-decoration: underline; }

@media (max-width: 900px) {
  .hero { padding: 3rem 0 3.5rem; }
  .hero-grid, .about-grid, .math-cols { grid-template-columns: 1fr; gap: 2.4rem; }
  .hero-stats { gap: 1.6rem; flex-wrap: wrap; }
  .offer-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .tb-note, .tb-nav { display: none; }
}

.reference-value { font-size: .9rem; color: var(--ink-soft); }
.hero-bundle-promise { font-family: var(--serif); font-size: 1.2rem;
                       line-height: 1.42; margin: -.2rem 0 1.5rem; color: var(--ink); }
.hero-bundle-promise strong { color: var(--ox); }
.hero-bundle-promise span { display: block; margin-top: .55rem; font-family: var(--sans);
                            font-size: .91rem; color: var(--ink-mid); }
.hero-book .bundle-caption, .bundle-caption { font-family: var(--serif); font-size: 1.03rem;
  font-weight: 600; line-height: 1.35; letter-spacing: 0; text-transform: none;
  color: var(--ink); text-align: center; margin: 1.45rem 0 .85rem; }
.bundle-caption span { color: var(--ox); }
.bonus-shelf { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: .65rem; align-items: start; }
.shelf-book { min-width: 0; color: var(--ink); text-decoration: none; text-align: center; }
.hero-book .shelf-book img, .shelf-book img { width: 100%; height: auto; aspect-ratio: 3/4;
  object-fit: cover; border-radius: 1px; box-shadow: 0 7px 15px rgba(17,39,50,.19); margin: 0; }
.shelf-book:focus-visible { outline: 3px solid var(--ox); outline-offset: 4px; }
.shelf-value { display: flex; justify-content: center; flex-wrap: wrap; gap: .2rem .35rem;
               font-family: var(--mono); font-size: .7rem; line-height: 1.5; margin-top: .55rem; }
.shelf-value s { color: var(--ink-mid); }.shelf-value b { color: var(--ox); }
.shelf-value small { flex-basis: 100%; font-family: var(--sans); font-size: .7rem;
                     color: var(--ink-mid); line-height: 1.2; }
.launch-value-note { display: block; font-size: .875rem; color: var(--ink-mid); text-align: right; font-weight: 400; }
.bundle-format { text-align: center; color: var(--ink-mid); font-size: .85rem;
                 line-height: 1.45; margin-top: 1rem; }
.bonus-library { background: var(--paper); }
.bonus-library-total { display: flex; flex-wrap: wrap; gap: .4rem 1.5rem; align-items: baseline; padding: 1.1rem 0; margin: 0 0 2rem; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.bonus-library-total s { color: var(--ink-mid); font-size: .88rem; }
.bonus-library-total strong { color: var(--ox); font-family: var(--serif); font-size: 1.12rem; }
.bonus-book-grid { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 1.25rem; }
.bonus-book-card { display: flex; flex-direction: column; min-width: 0; scroll-margin-top: 8rem; }
.bonus-book-card > .bonus-tag { align-self: flex-start; font-size: .62rem;
  letter-spacing: .1em; padding: .32rem .48rem; margin-bottom: .8rem; }
.bonus-book-card > img { width: 100%; height: auto; aspect-ratio: 3/4; object-fit: cover;
  box-shadow: var(--shadow-cover); margin: 0 0 1.2rem; }
.bonus-book-card h3 { font-size: 1.18rem; line-height: 1.24; margin: 0 0 .6rem; }
.bonus-book-card > p { font-size: .87rem; line-height: 1.5;
                       color: var(--ink-mid); margin: 0 0 .75rem; }
.bonus-book-card > .mini-promise { color: var(--ink); font-weight: 600; margin-bottom: .3rem; }
.mini-price { border-top: 1px solid var(--rule); padding-top: .85rem; margin-top: auto; }
.mini-price > span { display: block; font-size: .78rem; color: var(--ink-mid); }
.mini-price > strong { display: block; font-family: var(--serif); font-size: 1.26rem;
                       color: var(--ox); line-height: 1.3; margin-top: .18rem; }
.mini-price small { display: block; font-family: var(--sans); font-size: .76rem;
                    font-weight: 400; color: var(--ink-mid); }
.bonus-extras { margin-top: 2.3rem; padding-top: 1.2rem; border-top: 1px solid var(--rule); }
.offer-bundle-art { min-width: 0; position: sticky; top: 8rem; }
.offer-bundle-art .cover-frame { max-width: 315px; }
.offer-bundle-art .cover-frame figcaption { font-size: .84rem; color: var(--ink-mid);
                                             text-align: center; margin-top: .6rem; }
.offer-bundle-art .bonus-shelf { margin-top: 1rem; }
.offer-bundle-art .shelf-value { display: none; }
.mini-addon { align-items: start; gap: .85rem; }
.mini-addon > img { flex: 0 0 52px; width: 52px; height: 70px; object-fit: cover; margin-top: .2rem; }
.mini-addon-copy { flex: 1; min-width: 0; }
.mini-addon .bonus-tag { font-size: .6rem; letter-spacing: .09em; }
.mini-addon .addon-price { text-align: right; padding-top: .2rem; flex: 0 0 auto; white-space: normal; }
.mini-addon .addon-price s { display: block; font-size: .84rem; }
.price-estimate { display: block; font-size: .7rem; line-height: 1.4; }
.free-label { color: var(--ox); font-size: .92rem; }
.mini-addon .free-label { display: block; }
@media (max-width: 1050px) {
  .bonus-book-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 2rem; }
  .hero-grid { gap: 2rem; }
}
@media (max-width: 900px) {
  .hero-book { order: 0; max-width: 560px; width: 100%; margin: 0 auto; }
  .hero-book > img { width: min(260px,75%); }
  .offer-bundle-art { position: static; max-width: 560px; width: 100%; margin: 0 auto; }
}
.value-note { font-size: .9rem; line-height: 1.5; color: var(--ink-soft); margin: .7rem 0; }
.stack-total { gap: 1rem; }
.stack-total > span:last-child { white-space: nowrap; }
@media (max-width: 650px) {
  :root { --gutter: 20px; }
  .topbar { justify-content: space-between; gap: .55rem; padding: .55rem var(--gutter); }
  .tb-name { flex: 0 0 auto; max-width: 5.6rem; font-size: .94rem; }
  
  .topbar button.tb-cta { flex: 0 1 auto; max-width: calc(100% - 100px);
    font: 700 .62rem/1.2 var(--mono); letter-spacing: .045em;
    white-space: normal; text-align: center; padding: .58rem .68rem; }
  .launch { font-size: .58rem; padding: .42rem var(--gutter); }
  .hero { padding: 2.6rem 0 3rem; }
  .hero-grid { gap: 2rem; }
  h1 { font-size: clamp(2.2rem, 9.3vw, 2.65rem); line-height: 1.07; }
  h2 { font-size: clamp(1.9rem, 7.4vw, 2.25rem); line-height: 1.15; }
  .sub { font-size: 1.02rem; line-height: 1.52; margin-bottom: 1.1rem; }
  .hero-bundle-promise { font-size: 1.04rem; line-height: 1.42; margin: 0 0 1.2rem; }
  .hero-bundle-promise span { font-size: .86rem; }
  .hero-stats, .kicker { display: none; }
  .hero-ctas { display: block; margin-bottom: 0; }
  .hero-ctas .btn-primary { display: flex; width: 100%; justify-content: center; }
  .hero-ctas .btn-ghost { border: 0; display: inline-flex; padding: .7rem .2rem .2rem; }
  .btn { font-size: .64rem; padding: .88rem 1rem; letter-spacing: .06em; }
  .btn-big { padding: 1rem; text-align: center; }
  .hero-book > img { width: min(235px, 72%); }
  .hero-book::before { width: min(245px, 77%); }
  .hero-book .bundle-caption { margin: 1.2rem 0 .8rem; }
  .hero-book .bonus-shelf { grid-template-columns: repeat(5,minmax(0,1fr)); gap: .42rem; }
  .hero-book .shelf-value, .hero-book .bundle-format { display: none; }
  .sec { padding: 3.6rem 0; scroll-margin-top: 5.4rem; }
  .math-cols { gap: .85rem; margin-bottom: 1rem; }
  .choice-ledger { margin-bottom: 1.3rem; padding: 1.05rem; }
  .choice-ledger-label { font-size: .55rem; }
  .choice-ledger-row { font-size: .83rem; }
  .choice-ledger-row strong { font-size: .9rem; }
  .choice-ledger-result { align-items: center; padding: .85rem; font-size: 1rem; }
  .choice-ledger-result strong { font-size: 1.65rem; }
  .choice-ledger-note { font-size: .76rem; }
  .math-col { padding: 1rem 1.1rem; }
  .math-col p { font-size: .87rem; }
  .math-wrap table, .math-wrap tbody { display: block; width: 100%; }
  .math-wrap tr:first-child { display: none; }
  .math-wrap tr { display: grid; grid-template-columns: repeat(2,minmax(0,1fr));
                  gap: .35rem .8rem; padding: .8rem 0;
                  border-bottom: 1px solid var(--rule); }
  .math-wrap td, .math-wrap td:first-child { display: block; width: auto;
    text-align: left; border: 0; padding: 0; font-size: .78rem; line-height: 1.38; }
  .math-wrap td:first-child { grid-column: 1 / -1; font-family: var(--serif);
    font-size: 1rem; font-weight: 600; }
  .math-wrap td:nth-child(2)::before, .math-wrap td:nth-child(3)::before {
    display: block; margin-bottom: .18rem; font-family: var(--mono);
    font-size: .55rem; line-height: 1.3; letter-spacing: .06em;
    text-transform: uppercase; }
  .math-wrap td:nth-child(2)::before { content: 'First impression'; color: var(--ox); }
  .math-wrap td:nth-child(3)::before { content: 'With the book'; color: var(--sage-dk); }
  .math-wrap td.after { background: none; }
  .math-net { font-size: .98rem; }
  .about-grid { gap: 1.6rem; }
  .about-photo { max-width: 360px; }
  .offer-grid { gap: 1.5rem; margin-top: 1.4rem; }
  .offer-bundle-art .cover-frame { max-width: 210px; }
  .offer-bundle-art .bonus-shelf, .offer-bundle-art .bundle-caption,
  .offer-bundle-art .bundle-format { display: none; }
  .offer-card { padding: 1.2rem; }
  .offer-title { font-size: 1.4rem; }
  .offer-lede { font-size: .9rem; }
  .price-line { gap: .5rem 1rem; padding: 1rem 0; }
  .price-now { font-size: 2.45rem; }
  .bonus-book-grid { grid-template-columns: 1fr; gap: 0; }
  .bonus-book-card { display: grid; grid-template-columns: clamp(92px,26vw,145px) minmax(0,1fr);
    column-gap: 1rem; align-content: start; padding: 1rem 0;
    border-top: 1px solid var(--rule); }
  .bonus-book-card > .bonus-tag { grid-column: 2; grid-row: 1;
    margin-bottom: .4rem; font-size: .54rem; }
  .bonus-book-card > img { grid-column: 1; grid-row: 1 / span 5;
    margin: 0; box-shadow: 0 12px 26px -15px rgba(17,39,50,.48); }
  .bonus-book-card h3 { grid-column: 2; grid-row: 2; font-size: 1.15rem; margin-bottom: .25rem; }
  .bonus-book-card > .mini-promise { grid-column: 2; grid-row: 3; margin-bottom: .2rem; }
  .bonus-book-card > p:not(.mini-promise) { grid-column: 2; grid-row: 4;
    font-size: .79rem; margin-bottom: .35rem; }
  .bonus-book-card .mini-price { grid-column: 2; grid-row: 5;
    margin: .3rem 0 0; padding-top: .45rem; }
  .bonus-book-card .mini-price > strong { font-size: 1.04rem; }
  .bonus-book-card .mini-price small { font-size: .68rem; }
  .stack-total > span:last-child { white-space: normal; text-align: right; }
  .pay-today { flex-wrap: wrap; gap: .6rem 1rem; }
}
@media (max-width: 420px) {
  .mini-addon { display: grid; grid-template-columns: 46px minmax(0,1fr); gap: .65rem; }
  .mini-addon > img { width: 46px; height: 62px; }
  .mini-addon .addon-price { grid-column: 2; display: flex; align-items: baseline;
    flex-wrap: wrap; gap: .2rem .5rem; text-align: left; }
  .mini-addon .free-label { display: inline; }
}

.eyebrow, .secnum, .stack-h, .tb-note, .price-note { font-size: .78rem; letter-spacing: .12em; }
.tb-nav { font-size: .72rem; letter-spacing: .07em; }
.topbar button.tb-cta { font-size: .76rem; }
.launch { font-size: .76rem; }
.btn, .btn-big { font-size: .92rem; letter-spacing: .025em; }
.bonus-tag, .bonus-book-card > .bonus-tag, .mini-addon .bonus-tag { font-size: .73rem; }
.addon-row p, .bonus-book-card > p { font-size: .94rem; }
.mini-price > span, .mini-price small { font-size: .86rem; }
.choice-ledger-label { font-size: .72rem; }
.math-next { margin: 2rem 0 .25rem; font-size: 1.35rem; }
.checkout-assurance { margin-top: .8rem; font-size: .98rem; color: var(--ink-mid); }

@media (max-width: 760px) {
  .topbar button.tb-cta { font-size: .72rem; }
  .launch { font-size: .68rem; }
  .btn, .btn-big { font-size: .88rem; letter-spacing: .015em; }
  .bonus-book-card > .bonus-tag { font-size: .68rem; }
  .choice-ledger-label { font-size: .68rem; }
  .choice-ledger-note { font-size: .85rem; }
  .math-wrap td, .math-wrap td:first-child { font-size: .9rem; }
  .math-wrap td:nth-child(2)::before, .math-wrap td:nth-child(3)::before { font-size: .66rem; }
}

@media (max-width: 650px) {
  .bonus-book-card > p:not(.mini-promise) { font-size: .9rem; }
  .bonus-book-card .mini-price small { font-size: .82rem; }
  .addon-row p { font-size: .9rem; }
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

img { height: auto; }

.secnum { display: flex; align-items: center; gap: .85rem; }
.secnum::before { content: ""; flex: 0 0 2.4rem; height: 1px; background: currentColor; opacity: .7; }

.btn, .btn-big { font-family: var(--sans); font-weight: 700; font-size: 1.04rem;
  letter-spacing: .005em; text-transform: none; border-radius: 4px; padding: 15px 24px;
  box-shadow: inset 0 -3px 0 rgba(0,0,0,.22); }
.btn-big { padding: 17px 28px; font-size: 1.1rem; }
.btn-ghost { box-shadow: none; }
.btn-light { background: var(--gold-soft); border-color: var(--gold-soft); color: var(--ink); }
.btn-light:hover { background: #E3C99E; border-color: #E3C99E; color: var(--ink);
  transform: translateY(-1px);
  box-shadow: inset 0 -3px 0 rgba(0,0,0,.16), 0 14px 26px -12px rgba(0,0,0,.55); }
.sec-cta-center { display: flex; justify-content: center; }
.topbar button.tb-cta { font: 700 .92rem/1.2 var(--sans); letter-spacing: .01em;
  text-transform: none; padding: .68rem 1.05rem; border-radius: 4px;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,.25); }
.tb-nav { font: 600 .95rem/1.2 var(--sans); letter-spacing: 0; text-transform: none; gap: 1.7rem; }
.tb-nav a:hover { text-decoration: underline; text-underline-offset: 4px; }

.launch { font-size: .8rem; letter-spacing: .1em; padding: .55rem var(--gutter); }
.launch-short { display: none; }
.launch b { display: inline-block; margin-left: .3rem; padding: .14rem .5rem; border-radius: 3px;
  background: var(--gold-soft); color: var(--ink); letter-spacing: .05em; }

.trust-strip { background: var(--ink); color: var(--paper);
  border-bottom: 1px solid color-mix(in srgb, var(--gold-soft) 28%, transparent); }
.trust-row { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  padding-top: 1.45rem; padding-bottom: 1.45rem; }
.trust-item { display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  gap: .5rem; min-width: 0; padding: 0 .8rem; text-align: center;
  border-left: 1px solid color-mix(in srgb, var(--gold-soft) 22%, transparent); }
.trust-item:first-child { border-left: 0; }
.trust-item > b { display: flex; align-items: center; height: 3.2rem; font-family: var(--serif);
  font-weight: 400; font-size: 2.6rem; line-height: 1; letter-spacing: -.02em; color: var(--gold-soft); }
.trust-item > span:last-child { font: 700 .72rem/1.3 var(--mono); letter-spacing: .1em;
  text-transform: uppercase; color: var(--paper); }
.trust-item small { display: block; margin-top: .3rem; font: 400 .84rem/1.3 var(--sans);
  letter-spacing: .01em; text-transform: none; color: #C5D0CE; }
.trust-icon { flex: 0 0 auto; width: 2.4rem; height: 3.2rem; color: var(--gold-soft); }
.seal { display: inline-grid; place-items: center; align-content: center; flex: 0 0 auto;
  width: 3.2rem; height: 3.2rem; border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, #F2E0BA 0%, #D4B687 46%, #A67E4C 100%);
  color: var(--ink); font: 700 .5rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.38), inset 0 0 0 4px rgba(90,62,28,.22),
              0 6px 14px -6px rgba(0,0,0,.5); }
.seal b { display: block; font: 600 1.15rem/1 var(--serif); letter-spacing: -.02em; margin-bottom: .08rem; }

.contents { color: var(--paper);
  background: radial-gradient(90% 55% at 50% 0%, #22506A 0%, rgba(34,80,106,0) 72%),
              linear-gradient(180deg, var(--brand-primary) 0%, #0F2A38 100%); }
.contents .secnum { color: var(--gold-soft); }
.contents h2 { color: var(--paper); max-width: none; }
.contents .lede { color: #D9E3E1; max-width: 66ch; }
.toc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.6rem;
  margin-top: 2.6rem; }
.toc-card { position: relative; background: #FBF7EE; color: var(--ink);
  border: 1px solid #E2D3B5; border-radius: 3px; padding: 1.55rem 1.75rem 1.35rem;
  box-shadow: 0 26px 44px -30px rgba(0,0,0,.7), 0 2px 0 rgba(0,0,0,.14); }
.toc-card::before { content: ""; position: absolute; inset: 6px; border: 1px solid #E9DDC6;
  border-radius: 2px; pointer-events: none; }
.toc-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: start;
  gap: .9rem; padding-bottom: .95rem; margin-bottom: .3rem; border-bottom: 1px solid #D8C8A8; }
.toc-no { font: 700 1.02rem/1.6 var(--mono); color: var(--ox); }
.toc-head h3 { font-size: 1.28rem; font-weight: 500; line-height: 1.3; letter-spacing: -.012em;
  color: var(--ink); }
.toc-pill { margin-top: .22rem; padding: .38rem .64rem; border-radius: 99px; white-space: nowrap;
  font: 700 .68rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink); background: var(--gold-soft); }
.toc-list { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc-list li { counter-increment: toc; display: grid; grid-template-columns: 2rem minmax(0, 1fr);
  padding: .56rem 0; border-bottom: 1px dotted #CDBB97; font-size: 1.03rem; line-height: 1.45;
  color: var(--ink-soft); }
.toc-list li::before { content: counter(toc) "."; font: 700 .8rem/1.85 var(--mono); color: var(--gold); }
.toc-list li:last-child { border-bottom: 0; }
.toc-visual { display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .65rem;
  margin-top: .4rem; padding-top: .85rem; border-top: 1px solid #D8C8A8;
  font-family: var(--serif); font-style: italic; font-size: 1.06rem; line-height: 1.35; color: var(--ox); }
.toc-visual span { padding: .22rem .5rem; border-radius: 3px; font: 700 .66rem/1.4 var(--mono);
  font-style: normal; letter-spacing: .12em; text-transform: uppercase; color: var(--sage-dk);
  background: color-mix(in srgb, var(--sage) 15%, #FBF7EE); }
.toc-more { max-width: 60ch; margin: 2.5rem auto 0; text-align: center; font-family: var(--serif);
  font-size: 1.14rem; line-height: 1.5; color: #E4ECEA; }
.contents .sec-cta { margin-top: 1.9rem; }

.promise { background: var(--paper-warm); }
.promise h2 { max-width: 22ch; }
.promise-list { margin-top: 1.9rem; border-top: 1px solid var(--rule); }
.promise-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  gap: .4rem 2.6rem; align-items: baseline; padding: 1.3rem 0; border-bottom: 1px solid var(--rule); }
.promise-no { display: flex; align-items: baseline; gap: .85rem; font-family: var(--serif);
  font-style: italic; font-size: 1.18rem; line-height: 1.4; color: #8E3F2F; }
.promise-x { font: 700 1rem/1 var(--sans); font-style: normal; color: #AE4630; }
.promise-no s { text-decoration-thickness: 1.5px; text-decoration-color: rgba(142,63,47,.7); }
.promise-yes { font-family: var(--serif); font-size: 1.18rem; line-height: 1.45; color: var(--ink); }
.promise-sign { display: flex; align-items: center; gap: .95rem; margin-top: 2.1rem; }
.promise-sign img { width: 60px; height: 60px; border-radius: 50%; object-fit: cover;
  border: 3px solid #FFFDF8; box-shadow: 0 0 0 1px var(--gold-soft), 0 10px 20px -10px rgba(17,39,50,.5); }
.promise-sign span { font-family: var(--serif); font-style: italic; font-size: 1.65rem; color: var(--ox); }
.promise-sign span::before { content: "— "; }

.about-photo { padding: .8rem .8rem 0; background: #FFFDF8; border: 1px solid #E4D8C0;
  transform: rotate(-1.3deg);
  box-shadow: 0 30px 50px -32px rgba(17,39,50,.55), 0 4px 10px -6px rgba(17,39,50,.2); }
.about-photo figcaption { padding: .8rem .2rem .9rem; text-align: center; font-family: var(--serif);
  font-style: italic; font-size: 1.02rem; color: var(--ink-mid); }

.guarantee-box { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 1rem;
  align-items: start; margin-top: 1.3rem; padding: 1.05rem 1.15rem; border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--gold) 35%, var(--rule));
  background: color-mix(in srgb, var(--gold-soft) 13%, var(--paper)); }
.guarantee-box .guarantee { margin: 0; }
.guarantee-box .guarantee strong { color: var(--ink); }
.seal-lg { width: 3.9rem; height: 3.9rem; font-size: .56rem; }
.seal-lg b { font-size: 1.42rem; }
.checkout-assurance { display: flex; align-items: flex-start; gap: .5rem; }
.checkout-assurance .lock { flex: 0 0 1.15rem; width: 1.15rem; height: 1.15rem; margin-top: .25rem;
  color: var(--sage-dk); }

#faq summary { font-family: var(--serif); font-weight: 500; font-size: 1.24rem; line-height: 1.35;
  padding-right: 2rem; position: relative; }
#faq summary::after { float: none; position: absolute; right: 0; top: 0; font-size: 1.2rem; }
#faq details p { font-size: 1.02rem; }

.close { background: radial-gradient(80% 70% at 50% 0%, #2B404A 0%, rgba(43,64,74,0) 72%), var(--ink); }
.close .close-cta { display: flex; justify-content: center; margin-top: .3rem; }
.close .btn-big { width: auto; display: inline-flex; }
.close-note { margin-top: 1.05rem; font-size: 1rem; color: color-mix(in srgb, var(--paper) 72%, var(--ink)); }
footer { padding: 3.3rem 0 3.6rem; background: #131E24;
  border-top: 1px solid color-mix(in srgb, var(--paper) 12%, transparent); }
.footer-mark { margin-bottom: 1.1rem; font-family: var(--serif); font-size: 1.55rem;
  letter-spacing: -.01em; color: var(--paper); }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem 1.8rem; margin-bottom: 1.4rem; }
.footer-nav a { color: color-mix(in srgb, var(--paper) 88%, var(--ink)); text-decoration: none;
  font-weight: 600; font-size: 1rem; }
.footer-nav a:hover { color: var(--gold-soft); text-decoration: underline; text-underline-offset: 3px; }
.footer-edition { margin-bottom: 1.25rem; font: 700 .72rem/1 var(--mono); letter-spacing: .2em;
  text-transform: uppercase; color: var(--gold-soft); }
footer .dim { max-width: 72ch; margin: 0 auto; }
footer .footer-copy { margin-top: .9rem; }

@media (max-width: 1100px) {
  .trust-row { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 1.5rem; }
  .trust-item:nth-child(3n+1) { border-left: 0; }
}
@media (max-width: 820px) {
  .toc-grid { grid-template-columns: 1fr; gap: 1.1rem; margin-top: 2rem; }
  .toc-card { padding: 1.25rem 1.2rem 1.1rem; }
  .toc-head { gap: .7rem; }
  .toc-head h3 { font-size: 1.16rem; }
  .toc-list li { font-size: 1rem; grid-template-columns: 1.75rem minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .promise-row { grid-template-columns: 1fr; gap: .45rem; padding: 1.1rem 0; }
  .promise-no, .promise-yes { font-size: 1.08rem; }
  .promise-yes { padding-left: 1.85rem; }
}
@media (max-width: 650px) {
  .btn, .btn-big { font-size: 1rem; padding: 14px 18px; }
  .topbar button.tb-cta { font-size: .86rem; padding: .56rem .75rem; }
  .launch { font-size: .74rem; letter-spacing: .08em; }
  .launch-extra { display: none; }
  .launch-short { display: inline; }
  .trust-row { row-gap: 1.2rem; padding-top: 1.2rem; padding-bottom: 1.25rem; }
  .trust-item { gap: .35rem; padding: 0 .35rem; }
  .trust-item > b { height: 2.6rem; font-size: 2.1rem; }
  .trust-item > span:last-child { font-size: .64rem; letter-spacing: .07em; }
  .trust-item small { display: none; }
  .trust-icon { width: 2rem; height: 2.6rem; }
  .trust-item .seal { width: 2.6rem; height: 2.6rem; }
  .trust-item .seal b { font-size: 1rem; }
  .about-photo { transform: rotate(-1deg); }
  .guarantee-box { gap: .8rem; padding: .95rem; }
  .seal-lg { width: 3.2rem; height: 3.2rem; }
  .seal-lg b { font-size: 1.2rem; }
  .footer-mark { font-size: 1.22rem; }
  #faq summary { font-size: 1.12rem; }
  .footer-nav { gap: .5rem 1.2rem; }
  
  .math-wrap th:first-child, .math-wrap td:first-child,
  .math-wrap th:nth-child(2), .math-wrap td:nth-child(2),
  .math-wrap th:last-child, .math-wrap td:last-child { width: auto; }
}
@media (max-width: 420px) {
  .toc-head { grid-template-columns: auto minmax(0, 1fr); }
  .toc-pill { grid-column: 2; justify-self: start; margin-top: -.15rem; }
}

.anchor-alias { display: block; height: 0; scroll-margin-top: 6.5rem; }
.helps { background: var(--paper); }
.helps h2 { max-width: none; }
.helps .lede { max-width: 64ch; }

.voyage-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 0 2rem;
  margin: 2.2rem 0 0 calc(2rem + 10.5rem + 1.6rem); padding-bottom: .65rem;
  font: 700 .72rem/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-mute); }
.voyage { position: relative; list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--rule); }
.voyage::before { content: ""; position: absolute; left: .42rem; top: 1.9rem; bottom: 1.9rem;
  border-left: 2px dotted var(--gold-soft); }
.voyage-stage { position: relative; display: grid; grid-template-columns: 10.5rem minmax(0, 1fr);
  gap: 0 1.6rem; padding: 1.35rem 0 1.35rem 2rem; border-top: 1px solid var(--rule); }
.voyage-stage::before { content: ""; position: absolute; left: 0; top: 1.72rem; width: .95rem; height: .95rem;
  border-radius: 50%; background: var(--paper); border: 2px solid var(--ox); }
.voyage-when { padding-top: .2rem; font: 700 .76rem/1.35 var(--mono); letter-spacing: .12em;
  text-transform: uppercase; color: var(--gold); }
.voyage-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: .45rem 2rem;
  align-items: baseline; padding: .85rem 0; border-top: 1px dashed var(--rule); }
.voyage-row:first-child { padding-top: 0; border-top: 0; }
.voyage-row:last-child { padding-bottom: 0; }
.voyage-q { font-family: var(--serif); font-style: italic; font-size: 1.16rem; line-height: 1.4; color: var(--ink); }
.voyage-a { font-size: 1.03rem; line-height: 1.55; color: var(--ink-soft); }
.voyage-ref { display: inline-block; margin-left: .3rem; padding: .14rem .45rem; border-radius: 3px;
  font: 700 .66rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap;
  color: var(--sage-dk); background: color-mix(in srgb, var(--sage) 14%, var(--paper)); }

.promise-proof { margin-top: 1.7rem; padding: 1rem 1.2rem; border-left: 3px solid var(--sage);
  border-radius: 0 4px 4px 0; background: color-mix(in srgb, var(--sage) 10%, var(--paper-warm));
  font-size: 1.02rem; line-height: 1.58; color: var(--ink-soft); }
.promise-proof strong { color: var(--ink); }

@media (max-width: 900px) {
  .voyage-head { display: none; }
  .voyage-stage { grid-template-columns: 1fr; gap: .7rem; padding-left: 1.9rem; }
  .voyage-row { grid-template-columns: 1fr; gap: .3rem; }
  .voyage-a::before { content: "→ "; color: var(--sage-dk); font-weight: 700; }
  .voyage::before { top: 1.6rem; }
}
@media (max-width: 650px) {
  .voyage-stage { padding: 1.15rem 0 1.15rem 1.75rem; }
  .voyage-stage::before { top: 1.45rem; width: .85rem; height: .85rem; }
  .voyage::before { left: .37rem; }
  .voyage-q { font-size: 1.1rem; }
  .voyage-a { font-size: 1rem; }
}

:root {
  --brand-primary: #6B0F1C;
  --brand-accent: #916A46;
  --brand-bg: #F3EAEB;
  --brand-ink: #1C0B0D;
  --paper-warm: #EBE0DE;
  --paper-deep: #DFD0CA;
  --ink-soft: #2B1B1D;
  --ink-mid: #473839;
  --ink-mute: #6E6061;
  --rule: #CBBBB4;
  --gold-soft: #C3A283;
  --sage: #5B6B3F;
  --sage-dk: #3E4A29;
  --hero-book-back: #E3D6D1;
  --hero-book-edge: #C8B1A2;
  --trust-small: #D3C9CA;
  --band-top: #2A0C10;
  --band-bottom: #190A0C;
  --band-glow: #470D15;
  --band-lede: #EDE2E1;
  --band-more: #F0E6E6;
  --first-rule: #D0C0B9;
  --close-glow: #320C11;
  --footer-bg: #120708;
  --cover-bg: #2A0C10;
  --promise-no: #8A3524;
  --promise-x: #A63D26;
  --cover-ratio: 17 / 22;
  --shadow-cover: 0 32px 48px -25px rgba(28,11,13,.55), 0 12px 26px -13px rgba(28,11,13,.38);
  --shadow-page:  0 24px 50px -22px rgba(28,11,13,.28);
}

.hero-book::before { background: var(--hero-book-back); border-color: var(--hero-book-edge); }
.hero .kicker { display: block; margin-top: 1.1rem; }
.nowrap { white-space: nowrap; }
.trust-item small { color: var(--trust-small); }
.contents { background: radial-gradient(90% 55% at 50% 0%, var(--band-glow) 0%, transparent 72%),
                        linear-gradient(180deg, var(--band-top) 0%, var(--band-bottom) 100%); }
.contents .lede { color: var(--band-lede); }
.toc-more { color: var(--band-more); }
.toc-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
.toc-list.numbered li::before { content: attr(data-n); }
.toc-first { margin-top: .4rem; padding-top: .85rem; border-top: 1px solid var(--first-rule);
  font-family: var(--serif); font-style: italic; font-size: 1.04rem; line-height: 1.45; color: var(--ox); }
.toc-first span { display: inline-block; margin-right: .55rem; padding: .22rem .5rem; border-radius: 3px;
  font: 700 .66rem/1.4 var(--mono); font-style: normal; letter-spacing: .12em; text-transform: uppercase;
  color: var(--sage-dk); background: color-mix(in srgb, var(--sage) 16%, #FBF7EE); }

.bonus-book-card > img, .shelf-book img, .hero-book .shelf-book img { aspect-ratio: var(--cover-ratio, 17 / 22); object-fit: cover; background: var(--cover-bg); }
.mini-addon > img { height: 67px; object-fit: cover; background: var(--cover-bg); }
.close { background: radial-gradient(80% 70% at 50% 0%, var(--close-glow) 0%, transparent 72%), var(--ink); }
footer { background: var(--footer-bg); }
.promise-no { color: var(--promise-no); }
.promise-x { color: var(--promise-x); }
@media (max-width: 650px) {
  .hero .kicker { font-size: .9rem; }
}

.btn-primary, .btn-light, .tb-cta { border-radius: 10px; }
.btn-primary {
  background: var(--ox);
  background: linear-gradient(180deg, color-mix(in srgb, var(--ox) 80%, #FFFFFF 20%) 0%, var(--ox) 46%, var(--ox-dk) 100%);
  border: 1px solid var(--ox-dk);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.24), 0 2px 5px rgba(0,0,0,.14), 0 14px 26px -16px rgba(0,0,0,.55);
  text-shadow: 0 1px 0 rgba(0,0,0,.2);
}
.btn-primary:hover {
  background: var(--ox-dk);
  background: linear-gradient(180deg, color-mix(in srgb, var(--ox) 88%, #FFFFFF 12%) 0%, var(--ox-dk) 100%);
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 3px 8px rgba(0,0,0,.18), 0 20px 32px -16px rgba(0,0,0,.6);
}
.btn-primary:active, .btn-light:active { transform: translateY(1px); }
.btn-light { box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 2px 5px rgba(0,0,0,.18), 0 14px 26px -16px rgba(0,0,0,.6); }
.btn-primary::before, .btn-light::before {
  content: ""; flex: none; width: 1.02em; height: 1.02em; margin-right: -.1rem; background: currentColor; opacity: .92;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Crect x='5' y='10.5' width='14' height='10' rx='2.2' fill='none' stroke='black' stroke-width='2.1'/%3E%3Cpath d='M8.5 10.5V8a3.5 3.5 0 0 1 7 0v2.5' fill='none' stroke='black' stroke-width='2.1'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Crect x='5' y='10.5' width='14' height='10' rx='2.2' fill='none' stroke='black' stroke-width='2.1'/%3E%3Cpath d='M8.5 10.5V8a3.5 3.5 0 0 1 7 0v2.5' fill='none' stroke='black' stroke-width='2.1'/%3E%3C/svg%3E") center / contain no-repeat;
}
.tb-cta {
  box-shadow: inset 0 1px 0 rgba(255,255,255,.22), 0 6px 14px -8px rgba(0,0,0,.45);
}

.math { background: var(--brand-bg); padding-bottom: clamp(1rem, 2vw, 1.5rem); }
.math-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.math-copy h2 { margin-bottom: 1.2rem; }
.math-copy > p:not(.secnum):not(.math-price):not(.math-note) { color: var(--ink-mid); font-size: 1.1rem; line-height: 1.7; max-width: 34rem; margin: 0 0 1rem; }
.math-price { font-family: var(--serif); font-style: italic; font-size: clamp(1.45rem, 2.3vw, 1.9rem); line-height: 1.25; color: var(--brand-primary); margin: 1.5rem 0 1.25rem; }
.math-note { font: 400 .76rem/1.65 var(--mono); color: var(--ink-mute); letter-spacing: .02em; margin: 1.1rem 0 0; max-width: 30rem; }
.receipt { position: relative; margin: .4rem 0 0; background: #FFFDF6; color: #2A2018; padding: 1.7rem 1.5rem 1.5rem;
  border-top: 3px dashed #D4C7AC; border-bottom: 3px dashed #D4C7AC; transform: rotate(.7deg);
  box-shadow: 0 30px 52px -30px rgba(40,20,10,.5), 0 10px 24px -14px rgba(40,20,10,.28); font-family: var(--mono); }
.receipt header { text-align: center; padding-bottom: .95rem; border-bottom: 1px dashed #CDBFA3; }
.receipt header strong { display: block; font: 700 1rem/1.3 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.receipt header span { display: block; margin-top: .35rem; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: #7A6A55; }
.r-cols, .r-rows li { display: grid; grid-template-columns: minmax(0, 1fr) auto 1.5rem 4.6rem; align-items: center; column-gap: .55rem; }
.r-cols { margin: .8rem 0 .2rem; padding: 0 .35rem; font-size: .64rem; letter-spacing: .14em; text-transform: uppercase; color: #9A8A72; }
.r-cols span:nth-child(2), .r-cols span:nth-child(4) { text-align: right; }
.r-rows { list-style: none; margin: 0; padding: 0; }
.r-rows li { padding: .58rem .35rem; border-bottom: 1px dashed #E3D8C2; }
.r-rows li:nth-child(odd) { background: rgba(236,226,205,.38); }
.r-item { font-size: .9rem; line-height: 1.35; }
.r-item small { display: block; margin-top: .12rem; font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; color: #8A7A63; }
.r-rows s { color: #B23A26; font-size: .95rem; text-align: right; white-space: nowrap; text-decoration-thickness: 2px; }
.r-arrow { color: #2F6B3A; font: 700 1.25rem/1 'Caveat', cursive; text-align: center; }
.r-rows b { font: 700 1.5rem/1 'Caveat', cursive; color: #2F6B3A; text-align: right; white-space: nowrap; }
.receipt-total { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1.1rem; padding-top: .95rem; border-top: 2px solid #2A2018; }
.receipt-total span { font: 700 1.02rem/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.receipt-total em { font: 700 1.65rem/1 'Caveat', cursive; font-style: normal; color: #2F6B3A; border: 2px solid var(--brand-accent); border-radius: 50% / 46%; padding: .4rem 1rem .3rem; transform: rotate(-3deg); }
.receipt-foot { margin: .9rem 0 0; font-size: .74rem; line-height: 1.55; color: #6E604C; }
.math-ink { margin: clamp(1.6rem, 3vw, 2.4rem) auto 0; text-align: center; font: 700 clamp(1.6rem, 2.8vw, 2.2rem)/1.2 'Caveat', cursive; color: #2F6B3A;
  text-decoration: underline wavy rgba(47,107,58,.45); text-decoration-thickness: 2px; text-underline-offset: .35em; }
@media (max-width: 900px) {
  .math-grid { grid-template-columns: 1fr; }
  .receipt { transform: none; }
}
@media (max-width: 480px) {
  .receipt { padding: 1.3rem .9rem 1.2rem; }
  .r-cols, .r-rows li { grid-template-columns: minmax(0, 1fr) auto 1.1rem 3.9rem; column-gap: .4rem; }
  .r-item { font-size: .82rem; }
  .r-rows s { font-size: .86rem; }
  .r-rows b { font-size: 1.32rem; }
  .receipt-total em { font-size: 1.4rem; }
}