:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.75rem);

  --space-1: .25rem; --space-2: .5rem; --space-3: .75rem; --space-4: 1rem; --space-5: 1.25rem;
  --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem; --space-16: 4rem;
  --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --font-display: 'Zodiak', 'Iowan Old Style', Georgia, serif;
  --font-body: 'General Sans', 'Helvetica Neue', sans-serif;

  --radius-sm: 2px; --radius-md: 4px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-wide: 1200px;
}

:root, [data-theme='light'] {
  --color-bg: #FBFAF7;
  --color-surface: #FFFFFF;
  --color-surface-offset: #F3F1EC;
  --color-divider: #E6E2DA;
  --color-border: #D6D2C9;
  --color-text: #1E1D1A;
  --color-text-muted: #625F58;
  --color-text-faint: #A19D94;
  --color-text-inverse: #FBFAF7;
  --color-primary: #2C3E5C;
  --color-primary-hover: #1E2C44;
  --color-primary-highlight: #E3E7EE;
  --color-line: #2C3E5C;
  --color-ink: #1B2130;
  --color-ink-text: #EDEAE3;
  --color-ink-muted: #A7ADBB;
  --color-error: #9B2F2F;
  --shadow-book: 0 30px 60px -20px rgb(10 14 22 / .55), 0 8px 18px -8px rgb(10 14 22 / .35);
}

[data-theme='dark'] {
  --color-bg: #12151B;
  --color-surface: #181C24;
  --color-surface-offset: #161A21;
  --color-divider: #262B35;
  --color-border: #333947;
  --color-text: #E7E4DD;
  --color-text-muted: #A09C94;
  --color-text-faint: #6C6A66;
  --color-text-inverse: #12151B;
  --color-primary: #A9BCDD;
  --color-primary-hover: #C5D3EA;
  --color-primary-highlight: #232B3A;
  --color-line: #A9BCDD;
  --color-ink: #0C0E13;
  --color-ink-text: #EDEAE3;
  --color-ink-muted: #9AA0AD;
  --color-error: #E08A8A;
}

body { font-family: var(--font-body); background: var(--color-bg); color: var(--color-text); line-height: 1.65; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
::selection { background: var(--color-primary-highlight); }

.skip { position: absolute; left: -9999px; top: var(--space-2); background: var(--color-text); color: var(--color-bg); padding: var(--space-2) var(--space-4); z-index: 100; }
.skip:focus { left: var(--space-4); }

.container { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: clamp(var(--space-5), 5vw, var(--space-12)); }

.eyebrow { font-size: var(--text-xs); letter-spacing: .16em; text-transform: uppercase; font-weight: 500; color: var(--color-primary); margin-bottom: var(--space-4); }
.small { font-size: var(--text-xs); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); font: 500 var(--text-sm)/1 var(--font-body); padding: var(--space-4) var(--space-6); background: var(--color-text); color: var(--color-bg); border: 1px solid var(--color-text); border-radius: var(--radius-sm); text-decoration: none; cursor: pointer; transition: background var(--transition-interactive), color var(--transition-interactive), transform var(--transition-interactive); }
.btn:hover { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-text-inverse); }
[data-theme='dark'] .btn:hover { color: var(--color-bg); }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn-ghost:hover { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-small { padding: var(--space-3) var(--space-4); font-size: var(--text-xs); }
.btn-light { background: var(--color-ink-text); color: var(--color-ink); border-color: var(--color-ink-text); }
.btn-light:hover { background: #fff; border-color: #fff; color: var(--color-ink); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }

.icon-btn { width: 40px; height: 40px; display: inline-grid; place-items: center; background: none; border: 1px solid transparent; border-radius: var(--radius-sm); color: var(--color-text); cursor: pointer; }
.icon-btn:hover { border-color: var(--color-border); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--color-bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color var(--transition-interactive); }
.site-header.scrolled { border-bottom-color: var(--color-divider); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); height: 72px; }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; font-family: var(--font-display); font-size: 1.125rem; letter-spacing: -.01em; }
.brand-mark { width: 24px; height: 29px; color: var(--color-text); }
.nav { display: flex; gap: var(--space-8); }
.nav a { font-size: var(--text-sm); text-decoration: none; color: var(--color-text-muted); transition: color var(--transition-interactive); }
.nav a:hover { color: var(--color-text); }
.header-actions { display: flex; align-items: center; gap: var(--space-2); }
.menu-btn { display: none; }

/* Hero */
.hero { padding-block: clamp(var(--space-12), 7vw, var(--space-24)) clamp(var(--space-16), 8vw, var(--space-32)); }
.hero-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(var(--space-8), 5vw, var(--space-20)); align-items: center; }
.hero-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-3xl); line-height: 1.04; letter-spacing: -.02em; margin-bottom: var(--space-6); text-wrap: balance; }
.hero-title em { font-style: italic; color: var(--color-primary); }
.hero-lead { color: var(--color-text-muted); max-width: 46ch; margin-bottom: var(--space-8); }
.hero-lead strong { color: var(--color-text); font-weight: 500; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero-figure img { width: 100%; aspect-ratio: 3/2; object-fit: cover; border-radius: var(--radius-md); }
.hero-figure figcaption { margin-top: var(--space-3); font-size: var(--text-xs); color: var(--color-text-faint); font-style: italic; text-align: right; }
[data-theme='dark'] .hero-figure img, [data-theme='dark'] .circ-figure img { filter: brightness(.88); }

/* Sections */
.section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); position: relative; }
.section-offset { background: var(--color-surface-offset); overflow: hidden; }
.section-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-2xl); line-height: 1.1; letter-spacing: -.015em; }
.section-head { max-width: 680px; margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.section-head .section-title { margin-bottom: var(--space-5); }
.section-lead { color: var(--color-text-muted); }

/* Sello */
.sello-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(var(--space-8), 6vw, var(--space-24)); border-top: 1px solid var(--color-divider); padding-top: var(--space-12); }
.sello-text .big { font-family: var(--font-display); font-size: var(--text-lg); line-height: 1.45; margin-bottom: var(--space-5); }
.sello-text > p:not(.big) { color: var(--color-text-muted); max-width: 60ch; }
.principles { list-style: none; margin-top: var(--space-10); display: grid; gap: var(--space-6); }
.principles li { display: grid; grid-template-columns: 40px 1fr; gap: var(--space-4); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.p-num { font-family: var(--font-display); font-style: italic; color: var(--color-primary); font-size: var(--text-lg); line-height: 1.2; }
.principles h3 { font-size: var(--text-base); font-weight: 500; margin-bottom: var(--space-1); }
.principles p { color: var(--color-text-muted); font-size: var(--text-sm); }

/* Colección */
.contour-bg { position: absolute; top: 0; left: 0; width: 100%; height: 340px; color: var(--color-line); opacity: .18; pointer-events: none; }
.section-offset .container { position: relative; }
.maps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); }
.map-card { background: var(--color-bg); padding: var(--space-6); display: flex; flex-direction: column; min-height: 220px; transition: background var(--transition-interactive); }
.map-card:hover { background: var(--color-surface); }
.map-card-featured { grid-column: span 2; grid-row: span 2; padding: clamp(var(--space-6), 3vw, var(--space-10)); background: var(--color-surface); }
.map-top { display: flex; justify-content: space-between; align-items: center; gap: var(--space-2); margin-bottom: auto; padding-bottom: var(--space-8); }
.map-num { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-primary); }
.map-card-featured .map-num { font-size: var(--text-2xl); }
.badge { font-size: var(--text-xs); color: var(--color-text-faint); letter-spacing: .04em; }
.badge-accent { color: var(--color-primary); border: 1px solid currentColor; padding: var(--space-1) var(--space-3); border-radius: 999px; }
.map-name { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.map-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-lg); line-height: 1.2; margin-bottom: var(--space-3); }
.map-card-featured .map-title { font-size: var(--text-2xl); margin-bottom: var(--space-4); }
.map-desc { color: var(--color-text-muted); max-width: 44ch; margin-bottom: var(--space-4); }
.map-q { font-size: var(--text-sm); color: var(--color-text-muted); font-style: italic; }
.map-card-featured .map-q { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-primary); }
.map-sub { font-size: var(--text-sm); color: var(--color-text); line-height: 1.45; margin-bottom: var(--space-3); max-width: 40ch; }

/* Método */
.moves { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(var(--space-6), 3vw, var(--space-10)); counter-reset: m; }
.move { border-top: 1px solid var(--color-text); padding-top: var(--space-6); }
.move-icon { width: 40px; height: 40px; color: var(--color-primary); margin-bottom: var(--space-5); }
.move-num { font-size: var(--text-xs); color: var(--color-text-faint); letter-spacing: .12em; }
.move h3 { font-family: var(--font-display); font-weight: 400; font-size: var(--text-xl); margin: var(--space-1) 0 var(--space-3); }
.move p { color: var(--color-text-muted); font-size: var(--text-sm); }

.mirror { margin-top: clamp(var(--space-16), 8vw, var(--space-24)); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 6vw, var(--space-20)); align-items: center; }
.mirror-page { background: var(--color-surface); border: 1px solid var(--color-divider); padding: clamp(var(--space-8), 4vw, var(--space-12)); aspect-ratio: 4/3; display: flex; flex-direction: column; box-shadow: 0 20px 40px -24px rgb(20 20 30 / .25); position: relative; }
.mirror-page::after { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 18px; background: linear-gradient(to right, rgb(0 0 0 / .06), transparent); }
.mirror-date { font-size: var(--text-xs); color: var(--color-text-faint); margin-bottom: var(--space-4); }
.mirror-title { font-family: var(--font-display); font-size: var(--text-xl); margin-bottom: auto; }
.mirror-lines { display: grid; gap: var(--space-6); }
.mirror-lines span { display: block; border-bottom: 1px solid var(--color-divider); }
.mirror-h { font-family: var(--font-display); font-weight: 400; font-size: var(--text-xl); margin-bottom: var(--space-4); }
.mirror-text p:not(.eyebrow) { color: var(--color-text-muted); margin-bottom: var(--space-5); }
.mirror-text .signal { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-primary); line-height: 1.4; border-left: 2px solid var(--color-primary); padding-left: var(--space-5); }

/* Ciencia */
.science { margin-top: clamp(var(--space-16), 8vw, var(--space-24)); display: grid; grid-template-columns: 1.1fr 1fr; align-items: end; gap: clamp(var(--space-8), 5vw, var(--space-16)); padding-top: var(--space-12); border-top: 1px solid var(--color-divider); }
.science-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-xl); line-height: 1.2; margin-bottom: var(--space-4); }
.science-head > p:not(.eyebrow) { color: var(--color-text-muted); font-size: var(--text-sm); }
.levels { list-style: none; margin-top: 0; align-self: end; padding-bottom: var(--space-1); display: grid; gap: var(--space-2); font-size: var(--text-xs); color: var(--color-text-muted); }
.dots { color: var(--color-primary); letter-spacing: .15em; font-size: .7rem; }
.levels .dots { display: inline-block; width: 3.4em; }
.notes { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.note { background: var(--color-surface); border: 1px solid var(--color-divider); padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); position: relative; }
.note::before { content: ''; position: absolute; top: 0; left: var(--space-6); right: var(--space-6); height: 2px; background: var(--color-primary); opacity: .6; }
.note-meta { display: flex; justify-content: space-between; align-items: center; font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .12em; color: var(--color-text-faint); }
.note h4 { font-family: var(--font-display); font-weight: 400; font-size: var(--text-lg); line-height: 1.2; }
.note p:not(.note-meta) { font-size: var(--text-sm); color: var(--color-text-muted); }

/* Manual */
.section-ink { background: var(--color-ink); color: var(--color-ink-text); }
.section-ink .eyebrow { color: var(--color-ink-muted); }
.manual-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(var(--space-10), 7vw, var(--space-24)); align-items: center; }
.book-wrap { display: grid; place-items: center; perspective: 1400px; }
.book { width: min(100%, 340px); aspect-ratio: 148/210; background: #FBFAF7; color: #1E1D1A; padding: 9% 9% 8%; display: flex; flex-direction: column; box-shadow: var(--shadow-book); transform: rotateY(-8deg) rotateX(2deg); border-radius: 2px 4px 4px 2px; position: relative; }
.book::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 10px; background: linear-gradient(to right, rgb(0 0 0 / .12), transparent); }
.book-vol { font-size: .6rem; letter-spacing: .16em; text-transform: uppercase; color: #2C3E5C; }
.book-lines { width: 100%; height: 22%; margin: 8% 0 6%; color: #2C3E5C; opacity: .55; }
.book-title { font-family: var(--font-display); font-size: clamp(1.6rem, 1rem + 2vw, 2.2rem); line-height: 1.05; }
.book-sub { font-size: .72rem; line-height: 1.45; color: #625F58; font-style: italic; margin-top: 5%; max-width: 90%; }
.book-brand { margin-top: auto; display: flex; align-items: center; gap: .5rem; font-family: var(--font-display); font-size: .8rem; }
.book-brand svg { width: 14px; height: 17px; }
.manual-copy .section-title { margin-bottom: var(--space-5); }
.manual-copy > p { color: var(--color-ink-muted); max-width: 52ch; }
.checklist { list-style: none; margin: var(--space-6) 0 var(--space-8); display: grid; gap: var(--space-3); }
.checklist li { padding-left: var(--space-8); position: relative; font-size: var(--text-sm); }
.checklist li::before { content: ''; position: absolute; left: 0; top: .55em; width: 18px; height: 1px; background: var(--color-ink-muted); }

/* Forms */
.form { display: grid; gap: var(--space-5); }
.form-inline { grid-template-columns: 1fr 1fr; max-width: 560px; }
.form-inline .check, .form-inline .form-error, .form-inline .btn { grid-column: 1 / -1; justify-self: start; }
.field { display: grid; gap: var(--space-2); border: 0; }
.field label, .field legend { font-size: var(--text-xs); font-weight: 500; letter-spacing: .02em; }
.field legend { margin-bottom: var(--space-2); }
input[type=text], input[type=email], input[type=tel], select, textarea { font: inherit; font-size: var(--text-sm); width: 100%; padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); border-radius: var(--radius-sm); transition: border-color var(--transition-interactive); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-highlight); }
input[aria-invalid=true], select[aria-invalid=true] { border-color: var(--color-error); }
.section-ink input { background: transparent; border-color: #3A4152; color: var(--color-ink-text); }
.section-ink input:focus { border-color: var(--color-ink-text); box-shadow: 0 0 0 3px rgb(237 234 227 / .12); }
.section-ink .form-error { color: #F0A5A5; }
.check { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-xs); color: inherit; opacity: .9; }
.check input { margin-top: .2em; accent-color: var(--color-primary); }
.section-ink .check input { accent-color: #EDEAE3; }
.form-error { color: var(--color-error); font-size: var(--text-xs); }
.form-success { display: grid; gap: var(--space-4); justify-items: start; max-width: 560px; }
.form-success:focus { outline: none; }
.success-title { font-family: var(--font-display); font-size: var(--text-lg); }
.section-ink .form-success .small { color: var(--color-ink-muted); }

/* Círculos */
.circulos-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(var(--space-8), 6vw, var(--space-20)); align-items: start; }
.circ-figure img { width: 100%; aspect-ratio: 4/5; object-fit: cover; border-radius: var(--radius-md); }
.circ-copy .section-title { margin-bottom: var(--space-5); }
.circ-copy > p { color: var(--color-text-muted); max-width: 56ch; }
.facts { margin: var(--space-8) 0; border-top: 1px solid var(--color-divider); }
.facts div { display: grid; grid-template-columns: 150px 1fr; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-divider); font-size: var(--text-sm); }
.facts dt { color: var(--color-text-muted); }
.faq { border-bottom: 1px solid var(--color-divider); padding: var(--space-4) 0; }
.faq summary { cursor: pointer; font-weight: 500; font-size: var(--text-sm); list-style: none; display: flex; justify-content: space-between; gap: var(--space-4); }
.faq summary::after { content: '+'; font-family: var(--font-display); color: var(--color-primary); font-size: var(--text-lg); line-height: 1; }
.faq[open] summary::after { content: '–'; }
.faq p { margin-top: var(--space-3); color: var(--color-text-muted); font-size: var(--text-sm); }

.signup { margin-top: clamp(var(--space-16), 8vw, var(--space-24)); background: var(--color-surface); border: 1px solid var(--color-divider); padding: clamp(var(--space-6), 5vw, var(--space-16)); display: grid; grid-template-columns: .8fr 1.6fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); }
.signup-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-xl); margin-bottom: var(--space-3); }
.signup-head p { color: var(--color-text-muted); font-size: var(--text-sm); }
.form-grid { grid-template-columns: 1fr 1fr; }
.field-full { grid-column: 1 / -1; }
.choices { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.choice { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); border: 1px solid var(--color-border); border-radius: 999px; font-size: var(--text-sm); cursor: pointer; transition: border-color var(--transition-interactive), background var(--transition-interactive); }
.choice:has(input:checked) { border-color: var(--color-primary); background: var(--color-primary-highlight); }
.choice input { accent-color: var(--color-primary); }
.signup .form-success { grid-column: 2; align-self: center; }
.signup .form-success p:not(.success-title) { color: var(--color-text-muted); }
.signup .form-success a { color: var(--color-primary); }

/* Footer */
.site-footer { border-top: 1px solid var(--color-divider); padding-block: var(--space-16) var(--space-8); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-10); padding-bottom: var(--space-12); }
.footer-tag { margin-top: var(--space-3); color: var(--color-text-muted); font-family: var(--font-display); font-style: italic; }
.footer-nav { display: grid; gap: var(--space-2); align-content: start; }
.footer-nav a, .footer-contact a { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; }
.footer-nav a:hover, .footer-contact a:hover { color: var(--color-text); }
.footer-contact p { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-bottom { display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; padding-top: var(--space-6); border-top: 1px solid var(--color-divider); font-size: var(--text-xs); color: var(--color-text-faint); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .8s ease, transform .8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } .book { transform: none; } }

/* Responsive */
@media (max-width: 1024px) {
  .maps { grid-template-columns: repeat(2, 1fr); }
  .moves { grid-template-columns: repeat(2, 1fr); }
  .science { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--color-bg); border-bottom: 1px solid var(--color-divider); padding: var(--space-2) clamp(var(--space-5), 5vw, var(--space-12)) var(--space-4); }
  .nav.open { display: flex; }
  .nav a { padding: var(--space-3) 0; font-size: var(--text-base); color: var(--color-text); border-bottom: 1px solid var(--color-divider); }
  .menu-btn { display: inline-grid; }
  .header-actions .btn-small { display: none; }
  .hero-grid, .sello-grid, .manual-grid, .circulos-grid, .mirror, .signup { grid-template-columns: 1fr; }
  .hero-figure { order: -1; }
  .signup .form-success { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .circ-figure img { aspect-ratio: 16/10; }
  .book-wrap { order: 2; }
}
@media (max-width: 560px) {
  .maps { grid-template-columns: 1fr; }
  .map-card-featured { grid-column: auto; grid-row: auto; }
  .map-card { min-height: 0; }
  .moves { grid-template-columns: 1fr; }
  .notes { grid-template-columns: 1fr; }
  .form-inline, .form-grid { grid-template-columns: 1fr; }
  .facts div { grid-template-columns: 1fr; gap: 0; }
  .hero-ctas .btn { width: 100%; }
}
[hidden] { display: none !important; }

/* Pack de lanzamiento */
.pack { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); padding: clamp(var(--space-6), 4vw, var(--space-12)); margin-bottom: var(--space-12); }
.pack-head { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-6); flex-wrap: wrap; padding-bottom: var(--space-6); border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-8); }
.pack-eyebrow { font-size: var(--text-xs); letter-spacing: .1em; text-transform: uppercase; color: var(--color-primary); margin-bottom: var(--space-3); }
.pack-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-xl); line-height: 1.2; display: flex; align-items: baseline; gap: var(--space-4); flex-wrap: wrap; }
.pack-nums { font-size: var(--text-2xl); color: var(--color-primary); white-space: nowrap; }
.pack-books { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); }
.pack-book + .pack-book { border-left: 1px solid var(--color-border); padding-left: clamp(var(--space-8), 5vw, var(--space-16)); }
.pack-vol { font-size: var(--text-xs); letter-spacing: .08em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-3); }
.pack-book-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-2xl); line-height: 1.1; margin-bottom: var(--space-3); }
.pack-sub { font-size: var(--text-base); color: var(--color-text); max-width: 42ch; margin-bottom: var(--space-4); }
.pack-desc { color: var(--color-text-muted); max-width: 48ch; }
.pack-q { font-family: var(--font-display); font-style: italic; font-size: var(--text-lg); color: var(--color-primary); margin-top: var(--space-4); }
.maps-label { font-size: var(--text-xs); letter-spacing: .1em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-4); }
@media (max-width: 720px) {
  .pack-books { grid-template-columns: 1fr; gap: var(--space-8); }
  .pack-book + .pack-book { border-left: 0; padding-left: 0; border-top: 1px solid var(--color-border); padding-top: var(--space-8); }
  .pack-head { align-items: flex-start; }
}