/* Jeremiah Kirby — "River Outfitter" catalogue system
   Libre Caslon Condensed (display) + Schibsted Grotesk (text). Paper, river green, tobacco, ink. */

:root {
  --paper: #eee7da;
  --paper-2: #e6ddcd;
  --paper-3: #dcd1bd;
  --sheet: #f6f1e7;
  --river: #2e4a3e;
  --river-2: #22382f;
  --tobacco: #8b5a3c;
  --ink: #1d1a16;
  --ink-soft: #4f4a42;
  --rule: rgba(29, 26, 22, 0.22);
  --serif: 'Libre Caslon Condensed', 'Iowan Old Style', 'Baskerville', Georgia, serif;
  --sans: 'Schibsted Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --page: cubic-bezier(0.45, 0.05, 0.15, 1);
  --soft: cubic-bezier(0.25, 0.8, 0.25, 1);
  --margin: clamp(18px, 5vw, 88px);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: 380ms var(--page) both turn-out; }
::view-transition-new(root) { animation: 560ms var(--page) both turn-in; }
@keyframes turn-out { to { opacity: 0; transform: translateX(-3%); } }
@keyframes turn-in { from { opacity: 0; transform: translateX(5%); } }

body {
  margin: 0;
  background-color: var(--paper);
  background-image: radial-gradient(rgba(29, 26, 22, 0.035) 1px, transparent 1.2px);
  background-size: 4px 4px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(16px, 0.3vw + 15px, 18px);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
button, input, select, textarea { font: inherit; color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; font-weight: 400; }
main { display: block; outline: none; padding-top: 86px; }
:focus-visible { outline: 2px solid var(--tobacco); outline-offset: 3px; }
::selection { background: var(--river); color: var(--paper); }
.icon { width: 1em; height: 1em; flex: none; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 14px; top: -60px; z-index: 100; background: var(--river); color: var(--paper); padding: 10px 16px; text-decoration: none; font-size: 14px; }
.skip-link:focus { top: 14px; }

.kicker { font-family: var(--sans); font-size: 12px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--tobacco); margin: 0 0 18px; }
em { font-style: italic; }

/* ——— Quill links ——— */
.quill {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-style: italic; font-size: 21px; line-height: 1.2; color: var(--ink); text-decoration: none;
  padding-bottom: 3px;
  background-image: linear-gradient(var(--tobacco), var(--tobacco));
  background-size: 100% 1px; background-repeat: no-repeat; background-position: 0 100%;
  transition: background-size 0.7s var(--soft), color 0.3s;
}
.quill .icon { transition: transform 0.5s var(--soft); }
.quill:hover { color: var(--river); background-size: 30% 1px; }
.quill:hover .icon { transform: translateX(4px); }
.quill--large { font-size: clamp(24px, 2vw, 30px); }
.quill--button { background-color: transparent; border: 0; cursor: pointer; }
.quill--quiet { font-size: 18px; color: var(--ink-soft); background-image: none; }
.quill--quiet:hover { text-decoration: underline; }

/* ——— Running header ——— */
.runner {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: clamp(16px, 3vw, 48px);
  padding: 16px var(--margin);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid var(--rule);
  transition: transform 0.55s var(--page);
}
.runner.is-hidden { transform: translateY(-101%); }
.runner__mark { display: grid; text-decoration: none; line-height: 1; }
.runner__name { font-family: var(--serif); font-size: 29px; letter-spacing: 0.005em; }
.runner__sub { font-size: 10.5px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--tobacco); margin-top: 6px; }
.runner__folio { margin: 0; justify-self: center; font-family: var(--serif); font-style: italic; color: var(--ink-soft); font-size: 17px; }
.runner__nav { display: flex; gap: clamp(16px, 2vw, 32px); }
.runner__nav a { font-size: 14.5px; font-weight: 500; text-decoration: none; position: relative; padding: 4px 0; }
.runner__nav a::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform 0.5s var(--soft); }
.runner__nav a:hover::after, .runner__nav a[aria-current='page']::after { transform: scaleX(1); transform-origin: left; }
.runner__index { display: inline-flex; align-items: center; gap: 12px; background: none; border: 0; cursor: pointer; padding: 6px 0; font-family: var(--serif); font-style: italic; font-size: 21px; }
.runner__index-rule { width: 34px; height: 1px; background: var(--ink); transition: width 0.5s var(--soft); }
.runner__index:hover .runner__index-rule { width: 56px; }
.no-js .runner__index { display: none; }

/* ——— Contents overlay ——— */
.contents {
  position: fixed; inset: 0; z-index: 80; background: var(--river); color: var(--paper);
  display: grid; grid-template-rows: auto 1fr auto; padding: 18px var(--margin) 28px;
  clip-path: inset(0 0 100% 0); transition: clip-path 0.75s var(--page);
  overflow-y: auto;
}
.contents.is-open { clip-path: inset(0); }
.contents__top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid rgba(238, 231, 218, 0.3); }
.contents__title { font-family: var(--serif); font-size: 29px; margin: 0; }
.contents__close { display: inline-flex; align-items: center; gap: 8px; background: none; border: 1px solid rgba(238, 231, 218, 0.4); color: var(--paper); padding: 8px 14px; cursor: pointer; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; }
.contents__list { align-self: center; display: grid; grid-template-columns: 1fr 1fr; column-gap: 6vw; padding: 28px 0; }
.contents__list a {
  display: grid; grid-template-columns: 56px 1fr; align-items: baseline; text-decoration: none; padding: 10px 0;
  border-bottom: 1px solid rgba(238, 231, 218, 0.18);
  opacity: 0; transform: translateY(18px); transition: opacity 0.6s var(--soft), transform 0.6s var(--soft), color 0.3s;
}
.contents.is-open .contents__list a { opacity: 1; transform: none; }
.contents.is-open .contents__list a:nth-child(2) { transition-delay: 0.05s; }
.contents.is-open .contents__list a:nth-child(3) { transition-delay: 0.1s; }
.contents.is-open .contents__list a:nth-child(4) { transition-delay: 0.15s; }
.contents.is-open .contents__list a:nth-child(5) { transition-delay: 0.2s; }
.contents.is-open .contents__list a:nth-child(6) { transition-delay: 0.25s; }
.contents.is-open .contents__list a:nth-child(7) { transition-delay: 0.3s; }
.contents.is-open .contents__list a:nth-child(8) { transition-delay: 0.35s; }
.contents__n { font-family: var(--serif); font-style: italic; font-size: 20px; color: #c9b48f; }
.contents__t { font-family: var(--serif); font-style: italic; font-size: clamp(38px, 5.4vw, 84px); line-height: 1.05; }
.contents__list a:hover .contents__t, .contents__list a[aria-current='page'] .contents__t { color: #e8cfa3; }
.contents__foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; margin: 0; font-size: 14px; }
.contents__foot a { color: var(--paper); }

/* ——— Plates ——— */
.plate { margin: 9px; }
.plate__frame { position: relative; overflow: hidden; background: var(--paper-3); box-shadow: 0 0 0 8px var(--paper-2), 0 0 0 9px var(--rule); }
.plate__frame img { width: 100%; height: 100%; object-fit: cover; transform: translateY(var(--drift, 0px)) scale(1.06); }
.plate figcaption { display: flex; gap: 12px; align-items: baseline; padding-top: 10px; font-size: 13.5px; color: var(--ink-soft); line-height: 1.45; }
.plate__no { font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--tobacco); white-space: nowrap; }
.js [data-develop] img { filter: grayscale(1) sepia(0.25) blur(6px); opacity: 0.5; transition: filter 1.8s var(--soft), opacity 1.4s var(--soft); }
.js [data-develop].is-in img { filter: none; opacity: 1; }
.js [data-fade] { opacity: 0; transform: translateY(14px); transition: opacity 1.1s var(--soft), transform 1.1s var(--soft); }
.js [data-fade].is-in { opacity: 1; transform: none; }

/* ——— Cover ——— */
.cover { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 clamp(16px, 2.4vw, 40px); padding: clamp(24px, 4vw, 64px) var(--margin) clamp(80px, 9vw, 140px); align-items: end; }
.cover__plate { grid-column: 1 / span 7; }
.cover__plate .plate__frame { aspect-ratio: 4 / 3.15; }
.cover__text { grid-column: 9 / span 4; padding-bottom: 40px; }
.cover__title { font-family: var(--serif); font-size: clamp(48px, 5.6vw, 100px); line-height: 0.96; letter-spacing: -0.01em; margin-bottom: 26px; }
.cover__title em { color: var(--river); }
.cover__lede { color: var(--ink-soft); font-size: 17px; max-width: 36ch; }
.cover__links { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; margin-top: 28px; }

/* ——— Creed ——— */
.creed { padding: 0 var(--margin); }
.creed__text {
  font-family: var(--serif); font-style: italic; text-align: center;
  font-size: clamp(30px, 3.6vw, 60px); line-height: 1.14; max-width: 28ch; margin: 0 auto;
  padding: clamp(40px, 5vw, 70px) 0; border-top: 3px double var(--ink); border-bottom: 3px double var(--ink);
}
.creed__text em { color: var(--tobacco); }

/* ——— Two lines ——— */
.two-lines { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 clamp(16px, 2.4vw, 40px); padding: clamp(100px, 11vw, 170px) var(--margin); }
.line-card { grid-column: 1 / span 6; }
.line-card--low { grid-column: 8 / span 5; margin-top: clamp(80px, 14vw, 220px); }
.line-card .plate__frame { aspect-ratio: 4 / 4.8; }
.line-card--low .plate__frame { aspect-ratio: 4 / 5; }
.line-card__part { font-size: 12px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--tobacco); margin: 32px 0 6px; }
.line-card__title { font-family: var(--serif); font-size: clamp(50px, 5.4vw, 92px); line-height: 1; margin-bottom: 14px; }
.line-card p:not(.line-card__part) { color: var(--ink-soft); max-width: 42ch; }

/* ——— Reel ——— */
.reel { padding: 0 0 clamp(90px, 10vw, 150px); }
.reel__head { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding: 0 var(--margin) 28px; }
.reel__title { font-family: var(--serif); font-size: clamp(42px, 4.6vw, 76px); line-height: 1; }
.reel__title em { color: var(--river); }
.reel__controls { display: flex; gap: 8px; }
.reel__btn { width: 50px; height: 50px; display: grid; place-items: center; background: none; border: 1px solid var(--ink); border-radius: 50%; cursor: pointer; transition: background 0.3s, color 0.3s; }
.reel__btn:hover { background: var(--ink); color: var(--paper); }
.reel__btn:disabled { opacity: 0.3; cursor: default; background: none; color: var(--ink); }
.reel__btn .icon { width: 20px; height: 20px; }
.reel__track, .gallery__track {
  display: flex; gap: clamp(14px, 2vw, 28px); overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: 0 var(--margin);
  padding: 0 var(--margin) 6px; scrollbar-width: none; cursor: grab; outline-offset: -3px;
  overscroll-behavior-x: contain;
}
.reel__track::-webkit-scrollbar, .gallery__track::-webkit-scrollbar { display: none; }
.reel__track.is-dragging, .gallery__track.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.reel__track.is-dragging img, .gallery__track.is-dragging img { pointer-events: none; }
.reel__plate { flex: 0 0 clamp(240px, 27vw, 420px); scroll-snap-align: start; }
.reel__plate .plate__frame { aspect-ratio: 3 / 4; }
.reel__plate:nth-child(even) { margin-top: 48px; }
.reel__more { padding: 24px var(--margin) 0; margin: 0; }

/* ——— River ——— */
.river { position: relative; padding: 0 var(--margin) clamp(90px, 10vw, 150px); }
.river__plate .plate__frame { aspect-ratio: 16 / 7.2; }
.river__plate img { object-position: 50% 78%; }
.river__text {
  position: relative; margin: -90px 0 0 auto; width: min(540px, 92%);
  background: var(--sheet); padding: clamp(28px, 3.4vw, 52px); box-shadow: 0 1px 0 var(--rule), 0 24px 60px -30px rgba(29, 26, 22, 0.35);
}
.river__title { font-family: var(--serif); font-size: clamp(40px, 4vw, 64px); line-height: 1; margin-bottom: 18px; }
.river__title em { color: var(--river); }
.river__text p { color: var(--ink-soft); }

/* ——— Method ——— */
.method { padding: clamp(80px, 9vw, 140px) var(--margin); background: var(--paper-2); }
.method__title { font-family: var(--serif); font-size: clamp(44px, 5vw, 84px); line-height: 1; text-align: center; margin-bottom: 48px; }
.method__title em { color: var(--river); }
.method__list { list-style: none; margin: 0 auto; padding: 0; max-width: 1180px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 3px double var(--ink); }
.method__list li { padding: 32px clamp(16px, 2.4vw, 36px) 12px; border-right: 1px solid var(--rule); }
.method__list li:last-child { border-right: 0; }
.method__list li:nth-child(2) { transition-delay: 0.1s; }
.method__list li:nth-child(3) { transition-delay: 0.2s; }
.method__n { display: block; font-family: var(--serif); font-style: italic; font-size: 46px; line-height: 1; color: var(--tobacco); margin-bottom: 14px; }
.method__list h3 { font-family: var(--serif); font-size: 32px; line-height: 1.05; margin-bottom: 10px; }
.method__list p { color: var(--ink-soft); margin: 0; }
.method__more { text-align: center; margin: 48px 0 0; }

/* ——— Title page (inner) ——— */
.title-page { padding: clamp(50px, 7vw, 120px) var(--margin) clamp(40px, 5vw, 80px); max-width: 1180px; }
.title-page--tight { padding-bottom: 30px; }
.title-page__title { font-family: var(--serif); font-size: clamp(64px, 9vw, 168px); line-height: 0.92; letter-spacing: -0.015em; margin-bottom: 26px; }
.title-page__title em { color: var(--river); }
.title-page__lede { font-size: clamp(18px, 0.5vw + 16px, 22px); color: var(--ink-soft); max-width: 50ch; }
.title-page__lede a { color: var(--ink); }
.toc { display: flex; flex-wrap: wrap; gap: 6px 26px; margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--rule); }
.toc a { font-family: var(--serif); font-size: 22px; text-decoration: none; display: inline-flex; gap: 8px; align-items: baseline; }
.toc a span { font-style: italic; font-size: 15px; color: var(--tobacco); }
.toc a:hover { color: var(--river); text-decoration: underline; }

/* ——— Entries ——— */
.entries { padding: 0 var(--margin); }
.entry { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 clamp(16px, 2.4vw, 40px); align-items: center; padding: clamp(50px, 7vw, 110px) 0; border-top: 1px solid var(--rule); scroll-margin-top: 100px; }
.entry .plate { grid-column: 1 / span 6; }
.entry .plate__frame { aspect-ratio: 4 / 4.6; }
.entry__text { grid-column: 8 / span 5; }
.entry--flip .plate { grid-column: 7 / span 6; grid-row: 1; }
.entry--flip .entry__text { grid-column: 1 / span 5; grid-row: 1; }
.entry__no { font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--tobacco); margin: 0 0 6px; }
.entry__name { font-family: var(--serif); font-size: clamp(44px, 4.6vw, 78px); line-height: 0.98; margin-bottom: 20px; }
.entry__desc { font-size: clamp(17px, 0.4vw + 15px, 20px); color: var(--ink-soft); max-width: 42ch; }
.entry__label { font-size: 12px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--tobacco); margin: 26px 0 8px; }
.entry__items { list-style: none; margin: 0 0 30px; padding: 0; border-top: 1px solid var(--rule); }
.entry__items li { padding: 9px 0; border-bottom: 1px solid var(--rule); font-family: var(--serif); font-size: 21px; }
.turn { padding: clamp(60px, 8vw, 120px) var(--margin); border-top: 3px double var(--ink); }
.turn__link { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 10px 24px; text-decoration: none; }
.turn__link .kicker { width: 100%; margin: 0; }
.turn__title { font-family: var(--serif); font-size: clamp(42px, 6vw, 110px); line-height: 1; }
.turn__title em { color: var(--river); }
.turn__link .icon { width: clamp(40px, 5vw, 80px); height: auto; transition: transform 0.6s var(--soft); }
.turn__link:hover .icon { transform: translateX(14px); }

/* ——— Lookbook gallery ——— */
.gallery { padding-bottom: 60px; }
.gallery__bar { display: flex; justify-content: space-between; align-items: center; padding: 0 var(--margin) 20px; }
.gallery__count { margin: 0; font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--ink-soft); }
.gallery__plate { flex: 0 0 clamp(280px, 44vw, 760px); scroll-snap-align: start; scroll-margin-top: 120px; }
.gallery__plate .plate__frame { height: min(72vh, 760px); }
.plate-index { padding: clamp(60px, 7vw, 110px) var(--margin); border-top: 1px solid var(--rule); }
.plate-index__title { font-family: var(--serif); font-size: clamp(36px, 3.4vw, 54px); margin-bottom: 24px; }
.plate-index__list { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 6vw; }
.plate-index__list li { break-inside: avoid; border-bottom: 1px solid var(--rule); }
.plate-index__list a { display: grid; grid-template-columns: 70px 1fr; padding: 10px 0; text-decoration: none; font-family: var(--serif); font-size: 20px; }
.plate-index__list a span { font-style: italic; color: var(--tobacco); font-size: 16px; }
.plate-index__list a:hover, .plate-index__list a.is-current { color: var(--river); }

/* ——— Stockists ——— */
.chapters { display: grid; grid-template-columns: repeat(3, 1fr); padding: 0 var(--margin); border-top: 3px double var(--ink); margin: 0 var(--margin); padding: 0; }
.chapter { padding: 34px clamp(16px, 2.4vw, 36px) 40px 0; border-right: 1px solid var(--rule); }
.chapter + .chapter { padding-left: clamp(16px, 2.4vw, 36px); }
.chapter:last-child { border-right: 0; }
.chapter:nth-child(2) { transition-delay: 0.1s; }
.chapter:nth-child(3) { transition-delay: 0.2s; }
.chapter__n { font-family: var(--serif); font-style: italic; color: var(--tobacco); font-size: 20px; margin-bottom: 8px; }
.chapter h2 { font-family: var(--serif); font-size: clamp(34px, 3vw, 48px); line-height: 1; margin-bottom: 14px; }
.chapter p:not(.chapter__n) { color: var(--ink-soft); }
.suited { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 clamp(16px, 2.4vw, 40px); padding: clamp(90px, 10vw, 150px) var(--margin); align-items: start; }
.suited__plate { grid-column: 1 / span 6; }
.suited__plate .plate__frame { aspect-ratio: 4 / 3.4; }
.suited__text { grid-column: 8 / span 5; }
.suited__text h2 { font-family: var(--serif); font-size: clamp(44px, 4.6vw, 76px); line-height: 1; margin-bottom: 20px; }
.suited__text h2 em { color: var(--river); }
.suited__list { list-style: none; margin: 0 0 34px; padding: 0; }
.suited__list li { font-family: var(--serif); font-size: clamp(22px, 1.8vw, 28px); padding: 8px 0; border-bottom: 1px solid var(--rule); }
.terms { margin: 0 0 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
.terms div { padding: 14px 0; border-bottom: 1px solid var(--rule); }
.terms dt { font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--tobacco); }
.terms dd { margin: 4px 0 0; font-family: var(--serif); font-size: 21px; line-height: 1.2; }

/* ——— About ——— */
.essay { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 clamp(16px, 2.4vw, 40px); padding: 20px var(--margin) clamp(80px, 9vw, 140px); align-items: start; }
.essay__plate { grid-column: 1 / span 7; }
.essay__plate .plate__frame { aspect-ratio: 3 / 2; }
.essay__text { grid-column: 9 / span 4; padding-top: 10px; }
.essay__text p { color: var(--ink-soft); }
.essay__drop { font-family: var(--serif); font-size: 26px; line-height: 1.32; color: var(--ink) !important; }
.essay__drop::first-letter { float: left; font-size: 4.4em; line-height: 0.8; padding: 6px 10px 0 0; color: var(--river); }
.tenets { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 var(--margin); border-top: 3px double var(--ink); }
.tenet { padding: 30px clamp(16px, 2.4vw, 36px) 40px 0; border-right: 1px solid var(--rule); }
.tenet + .tenet { padding-left: clamp(16px, 2.4vw, 36px); }
.tenet:last-child { border-right: 0; }
.tenet__n { font-family: var(--serif); font-style: italic; color: var(--tobacco); font-size: 26px; margin-bottom: 6px; }
.tenet h3 { font-family: var(--serif); font-size: 34px; margin-bottom: 8px; }
.tenet p:last-child { color: var(--ink-soft); margin: 0; }
.still { padding: clamp(80px, 9vw, 140px) var(--margin) 0; }
.still__plate .plate__frame { aspect-ratio: 16 / 7; }
.particulars { max-width: 760px; margin: 0 auto; padding: clamp(80px, 9vw, 140px) var(--margin); text-align: center; }
.particulars h2 { font-family: var(--serif); font-style: italic; font-size: 34px; margin-bottom: 14px; }
.particulars p { font-size: 18px; color: var(--ink-soft); }
.particulars a { color: var(--ink); }

/* ——— Questions ——— */
.qa-book { display: grid; grid-template-columns: minmax(260px, 0.8fr) 1.2fr; gap: clamp(30px, 6vw, 110px); padding: 20px var(--margin) clamp(90px, 10vw, 150px); align-items: start; }
.qa-book__toc { position: sticky; top: 110px; }
.qa-book__toc ol { list-style: none; margin: 0; padding: 0; border-top: 3px double var(--ink); }
.qa-book__toc a { display: grid; grid-template-columns: 34px 1fr; padding: 9px 0; border-bottom: 1px solid var(--rule); text-decoration: none; font-size: 15.5px; line-height: 1.35; color: var(--ink-soft); transition: color 0.3s, padding 0.4s var(--soft); }
.qa-book__toc a span { font-family: var(--serif); font-style: italic; color: var(--tobacco); }
.qa-book__toc a:hover { color: var(--ink); }
.qa-book__toc a.is-current { color: var(--river); padding-left: 10px; font-weight: 600; }
.qa-book__item { padding: 0 0 40px; margin-bottom: 40px; border-bottom: 1px solid var(--rule); scroll-margin-top: 110px; }
.qa-book__n { font-family: var(--serif); font-style: italic; color: var(--tobacco); font-size: 22px; margin-bottom: 4px; }
.qa-book__item h2 { font-family: var(--serif); font-size: clamp(30px, 2.8vw, 44px); line-height: 1.05; margin-bottom: 14px; }
.qa-book__item p:last-child { font-size: 18px; color: var(--ink-soft); max-width: 58ch; margin: 0; }

/* ——— Correspondence ——— */
.letter { padding: 10px var(--margin) clamp(90px, 10vw, 150px); }
.letter__sheet {
  max-width: 980px; background: var(--sheet); padding: clamp(28px, 5vw, 80px);
  box-shadow: 0 1px 0 var(--rule), 0 40px 80px -50px rgba(29, 26, 22, 0.5);
  font-family: var(--serif); font-size: clamp(21px, 1.7vw, 27px); line-height: 2.05;
  position: relative;
}
.letter__sheet::before { content: ''; position: absolute; left: clamp(14px, 2.6vw, 40px); top: 0; bottom: 0; width: 1px; background: rgba(139, 90, 60, 0.35); }
.letter__date { font-style: italic; color: var(--ink-soft); text-align: right; margin-bottom: 1.2em; }
.letter__salutation { margin-bottom: 0.8em; }
.letter__para { margin: 0 0 0.9em; }
.blank { display: inline-block; position: relative; }
.blank input, .blank select {
  font-family: var(--serif); font-size: inherit; line-height: 1.3; color: var(--river); background: transparent;
  border: 0; border-bottom: 1px dashed var(--ink-soft); padding: 0 4px; max-width: 100%; border-radius: 0;
}
.blank input::placeholder { color: rgba(79, 74, 66, 0.55); font-style: italic; }
.blank select { appearance: none; cursor: pointer; padding-right: 18px; background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%), linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%); background-position: calc(100% - 9px) 60%, calc(100% - 4px) 60%; background-size: 5px 5px; background-repeat: no-repeat; }
.blank input:focus, .blank select:focus { outline: none; border-bottom: 2px solid var(--river); background: rgba(46, 74, 62, 0.06); }
.blank.has-error input, .blank.has-error select { border-bottom: 2px solid #9b2d1f; }
.letter__lines { border: 0; padding: 0; }
.letter__lines legend { padding: 0; float: left; margin-right: 0.35em; }
.lines-choice { display: inline; }
.lines-choice label { display: inline-block; position: relative; margin: 0 0.2em; }
.lines-choice input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.lines-choice span { font-style: italic; color: var(--ink-soft); border-bottom: 1px dotted transparent; cursor: pointer; transition: color 0.25s, background 0.25s; padding: 0 3px; }
.lines-choice label:not(:last-child) span::after { content: ','; color: var(--ink-soft); font-style: normal; }
.lines-choice input:checked + span { color: var(--paper); background: var(--river); font-style: normal; }
.lines-choice input:focus-visible + span { outline: 2px solid var(--tobacco); outline-offset: 2px; }
.lines-choice span:hover { color: var(--river); }
.letter__lines.has-error legend { color: #9b2d1f; }
.letter__para--free label { display: block; }
.letter__para--free textarea {
  width: 100%; font-family: var(--serif); font-size: inherit; line-height: 2.05; color: var(--river); border: 0; padding: 0 4px; resize: vertical;
  background: repeating-linear-gradient(transparent 0 calc(2.05em - 1px), rgba(79, 74, 66, 0.35) calc(2.05em - 1px) 2.05em);
}
.letter__para--free textarea:focus { outline: none; background-color: rgba(46, 74, 62, 0.04); }
.letter__para--free.has-error textarea { background-color: rgba(155, 45, 31, 0.06); }
.letter__signoff { margin: 1.2em 0 0.2em; }
.letter__signature { font-style: italic; font-size: 1.5em; color: var(--river); min-height: 1.4em; margin: 0; }
.letter__errors { font-family: var(--sans); font-size: 15px; line-height: 1.5; color: #9b2d1f; margin: 24px 0 0; padding: 16px 20px 16px 36px; background: rgba(155, 45, 31, 0.06); }
.letter__submit { max-width: 980px; display: flex; justify-content: flex-end; margin: 28px 0 0; }
.proof { max-width: 980px; margin-top: 50px; padding-top: 30px; border-top: 3px double var(--ink); outline: none; }
.proof__meta { margin: 0 0 6px; font-size: 16px; }
.proof__meta > span:first-child { display: inline-block; width: 90px; font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--tobacco); }
.proof__body { white-space: pre-wrap; font-family: var(--serif); font-size: 21px; line-height: 1.7; background: var(--sheet); padding: clamp(22px, 3vw, 44px); margin: 20px 0 24px; box-shadow: inset 0 0 0 1px var(--rule); }
.proof__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 30px; }
.proof__status { color: var(--river); font-size: 15px; min-height: 1.5em; margin-top: 14px; }

/* ——— Prose ——— */
.prose { max-width: 800px; padding: clamp(50px, 7vw, 120px) var(--margin) clamp(90px, 10vw, 150px); }
.prose--wide { max-width: 1100px; }
.prose .title-page__title { font-size: clamp(56px, 7vw, 120px); }
.prose h2 { font-family: var(--serif); font-size: 32px; margin: 44px 0 10px; }
.prose p { color: var(--ink-soft); }
.prose a { color: var(--ink); }
.prose__date { font-style: italic; font-family: var(--serif); font-size: 19px; }
.credit-list { list-style: none; margin: 30px 0; padding: 0; border-top: 3px double var(--ink); }
.credit-list li { display: grid; grid-template-columns: 120px 1fr; gap: 20px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--rule); font-size: 16px; color: var(--ink-soft); }
.credit-list__thumb img { width: 120px; height: 80px; object-fit: cover; }
.credit-list em { font-family: var(--serif); font-size: 19px; color: var(--ink); }
.credit-list a { display: inline-flex; align-items: center; gap: 4px; }

/* ——— Colophon ——— */
.colophon { background: var(--paper-3); border-top: 1px solid var(--rule); padding: clamp(60px, 8vw, 110px) var(--margin) 28px; }
.colophon__inner { max-width: 820px; margin: 0 auto; text-align: center; }
.colophon__heading { font-family: var(--serif); font-variant: small-caps; letter-spacing: 0.14em; font-size: 22px; margin-bottom: 18px; color: #6b432c; }
.colophon__text { font-family: var(--serif); font-size: clamp(19px, 1.5vw, 23px); line-height: 1.6; color: var(--ink); }
.colophon__text a { color: var(--river); }
.colophon__nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 24px; margin: 34px 0; font-size: 14px; font-weight: 500; }
.colophon__nav a { text-decoration: none; }
.colophon__nav a:hover { text-decoration: underline; }
.colophon__end { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 20px; padding-top: 20px; border-top: 1px solid var(--rule); font-size: 13px; color: var(--ink-soft); margin: 0; }
.colophon__end span:last-child { font-family: var(--serif); font-style: italic; font-size: 17px; }
.colophon__river { font-family: var(--serif); font-style: italic; font-size: 17px; }

/* ——— Responsive ——— */
@media (max-width: 1020px) {
  .runner { grid-template-columns: 1fr auto; }
  .runner__folio { display: none; }
  .js .runner__nav { display: none; }
  .no-js .runner { grid-template-columns: 1fr; position: static; }
  .no-js main { padding-top: 0; }
  .cover { grid-template-columns: 1fr; }
  .cover__plate, .cover__text { grid-column: 1; }
  .cover__text { padding: 34px 0 0; }
  .two-lines { grid-template-columns: 1fr; gap: 70px; }
  .line-card, .line-card--low { grid-column: 1; margin-top: 0; }
  .entry, .suited, .essay { grid-template-columns: 1fr; gap: 30px; }
  .entry .plate, .entry--flip .plate, .entry__text, .entry--flip .entry__text, .suited__plate, .suited__text, .essay__plate, .essay__text { grid-column: 1; grid-row: auto; }
  .method__list, .chapters, .tenets { grid-template-columns: 1fr; }
  .method__list li, .chapter, .chapter + .chapter, .tenet, .tenet + .tenet { border-right: 0; padding-left: 0; border-bottom: 1px solid var(--rule); }
  .qa-book { grid-template-columns: 1fr; }
  .qa-book__toc { position: static; }
  .contents__list { grid-template-columns: 1fr; }
  .river__text { margin-top: -40px; }
  .river__plate .plate__frame { aspect-ratio: 4 / 3; }
  .still__plate .plate__frame { aspect-ratio: 4 / 3; }
}
@media (max-width: 640px) {
  main { padding-top: 76px; }
  .runner { padding-top: 12px; padding-bottom: 12px; }
  .runner__name { font-size: 25px; }
  .runner__sub { letter-spacing: 0.12em; white-space: nowrap; }
  .runner__index-label { font-size: 19px; }
  .runner__index-rule { width: 22px; }
  .plate-index__list { columns: 1; }
  .terms { grid-template-columns: 1fr; }
  .reel__plate:nth-child(even) { margin-top: 24px; }
  .gallery__plate .plate__frame { height: 62vh; }
  .letter__sheet { line-height: 1.95; }
  .letter__sheet::before { display: none; }
  .letter__sheet { font-size: 20px; }
  .blank input, .blank select { max-width: calc(100vw - 110px); }
  .credit-list li { grid-template-columns: 84px 1fr; }
  .credit-list__thumb img { width: 84px; height: 60px; }
  .colophon__end { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .runner__sub { display: none; }
  main { padding-top: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .js [data-develop] img { filter: none !important; opacity: 1 !important; }
  .js [data-fade] { opacity: 1 !important; transform: none !important; }
  .plate__frame img { transform: none !important; }
  @view-transition { navigation: none; }
}