/* Hallmark · genre: editorial · macrostructure: Manifesto (home) · theme: brand-blue
 * nav: N6 masthead · footer: Ft1 · enrichment: none (typography only)
 * colors matched to existing Base line brand (blue #3B82F6 · navy #213F7D); no gradients
 * pre-emit critique: P5 H5 E4 S5 R5 V5
 */

@import url("tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: 0.01em;
  margin: 0;
  overflow-wrap: anywhere;
  min-width: 0;
}
/* First-view / hero titles carry B's heavier "映え" register */
h1 { font-weight: 900; letter-spacing: 0; }

a { color: inherit; }
img, svg { max-width: 100%; display: block; }

.wrap { width: min(100% - 2 * var(--space-lg), var(--wrap)); margin-inline: auto; }
@media (max-width: 560px){ .wrap { width: min(100% - 2 * var(--space-md), var(--wrap)); } }

.measure { max-width: var(--measure); }

/* ------------------------------------------------------------------ *
 * N6 · Masthead nav (broadsheet)
 * ------------------------------------------------------------------ */
.masthead {
  border-bottom: var(--rule-hair) solid var(--color-ink);
  background: var(--color-paper);
}
.masthead__inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-sm);
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4em;
  text-decoration: none;
  font-family: var(--font-emph);
  font-weight: 700;
  font-size: var(--text-xl);
  letter-spacing: 0.005em;
  color: var(--color-ink);
}
.brand .plus { color: var(--color-accent); }
.brand small {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.28em;
  color: var(--color-ink-3);
  text-transform: uppercase;
}
.masthead__nav {
  display: flex;
  gap: clamp(var(--space-sm), 3vw, var(--space-lg));
  align-items: baseline;
  flex-wrap: wrap;
}
.masthead__nav a {
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink-2);
  padding-block: 0.3em;
  position: relative;
  transition: color var(--dur-short) var(--ease-out);
  white-space: nowrap;
}
.masthead__nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0.05em;
  height: 1px; background: var(--color-accent);
  transition: right var(--dur-short) var(--ease-out);
}
.masthead__nav a:hover, .masthead__nav a[aria-current="page"] { color: var(--color-ink); }
.masthead__nav a:hover::after, .masthead__nav a[aria-current="page"]::after { right: 0; }
.masthead__nav a:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
@media (max-width: 640px){
  .masthead__inner { flex-direction: column; align-items: flex-start; gap: var(--space-2xs); }
  .masthead__nav { gap: var(--space-md); }
}

/* Kicker / label — stacked above heading only (gate 54: never tag-left) */
.kicker {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent-strong);
  margin: 0 0 var(--space-sm);
}
.kicker--ink { color: var(--color-ink-3); }

/* ------------------------------------------------------------------ *
 * Buttons — squared, no gradient, no pill+gradient
 * ------------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--font-body); font-weight: 500;
  font-size: var(--text-sm); letter-spacing: 0.06em;
  padding: 0.95em 1.6em;
  border: var(--rule-hair) solid var(--color-ink);
  background: var(--color-ink); color: var(--color-ink-inv);
  text-decoration: none; cursor: pointer;
  border-radius: var(--radius-input);
  transition: background var(--dur-short) var(--ease-out),
              color var(--dur-short) var(--ease-out),
              transform var(--dur-short) var(--ease-out);
}
.btn .arrow { transition: transform var(--dur-short) var(--ease-out); }
.btn:hover { background: var(--color-accent-strong); border-color: var(--color-accent-strong); color: var(--color-accent-ink); }
.btn:hover .arrow { transform: translateX(4px); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }

.btn--ghost { background: transparent; color: var(--color-ink); }
.btn--ghost:hover { background: var(--color-ink); color: var(--color-ink-inv); border-color: var(--color-ink); }

/* Typographic link (editorial CTA) */
.tlink {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-family: var(--font-body); font-weight: 500; font-size: var(--text-sm);
  letter-spacing: 0.06em; color: var(--color-ink);
  text-decoration: none; padding-block: 0.3em;
  border-bottom: 1px solid var(--color-ink);
  transition: color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.tlink .arrow { transition: transform var(--dur-short) var(--ease-out); }
.tlink:hover { color: var(--color-accent-strong); border-color: var(--color-accent-strong); }
.tlink:hover .arrow { transform: translateX(4px); }
.tlink:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }

/* ------------------------------------------------------------------ *
 * Sections & rhythm
 * ------------------------------------------------------------------ */
.section { padding-block: var(--space-3xl); }
.section--tight { padding-block: var(--space-2xl); }
.section + .section { border-top: var(--rule-hair) solid var(--color-rule); }

.eyebrow-row {
  display: flex; align-items: baseline; gap: var(--space-md);
  border-bottom: var(--rule-hair) solid var(--color-ink);
  padding-bottom: var(--space-sm); margin-bottom: var(--space-2xl);
}
.eyebrow-row h2 { font-size: var(--text-2xl); }
.eyebrow-row .idx {
  font-family: var(--font-emph); font-size: var(--text-md);
  color: var(--color-accent-strong); font-weight: 700; margin-left: auto;
}
@media (max-width: 560px){
  .eyebrow-row { flex-wrap: wrap; gap: var(--space-2xs); }
  .eyebrow-row .idx { margin-left: 0; }
}

/* ------------------------------------------------------------------ *
 * Manifesto hero
 * ------------------------------------------------------------------ */
.manifesto {
  padding-block: clamp(var(--space-2xl), 12vh, var(--space-4xl));
}
/* Home hero with generated key visual (right-weighted; text stays on paper) */
.manifesto--kv {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  min-height: clamp(460px, 72vh, 680px);
}
/* flex child must be allowed to shrink, else it forces page wider than viewport */
.manifesto--kv > .wrap { min-width: 0; }
.manifesto--kv::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background: image-set(
      url("img/key_visual.webp") type("image/webp"),
      url("img/key_visual.png")  type("image/png")
    ) no-repeat right center / cover;
}
.manifesto--kv::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg,
      var(--color-paper) 24%,
      oklch(98.5% 0.006 250 / 0) 62%);
}
@media (max-width: 820px) {
  .manifesto--kv { min-height: auto; display: block; }
  .manifesto--kv::before { background-size: cover; background-position: right center; }
  .manifesto--kv::after {
    background: linear-gradient(180deg,
        oklch(98.5% 0.006 250 / 0.5) 0%,
        var(--color-paper) 68%);
  }
}
.manifesto__lead {
  font-size: var(--text-sm); letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--color-ink-3); margin-bottom: var(--space-lg);
}
.manifesto__lead .plus { color: var(--color-accent); font-family: var(--font-emph); font-weight: 700; letter-spacing: normal; }
.manifesto h1 {
  font-size: var(--text-display);
  line-height: 1.12;
  max-width: 15ch;
  letter-spacing: 0;
}
.manifesto h1 .nobr { white-space: nowrap; }
.manifesto h1 em { font-style: normal; color: var(--color-accent); }
.manifesto__sub {
  margin-top: var(--space-xl);
  max-width: 46ch;
  font-size: var(--text-lg);
  color: var(--color-ink-2);
  line-height: 1.9;
}
.manifesto__cta { margin-top: var(--space-2xl); display: flex; gap: var(--space-md); flex-wrap: wrap; }

/* ------------------------------------------------------------------ *
 * Editorial index (services list — NOT a 3-col icon-tile grid)
 * ------------------------------------------------------------------ */
.index-list { display: flex; flex-direction: column; }
.index-row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1.1fr) minmax(0, 1.4fr) auto;
  gap: var(--space-lg);
  align-items: start;
  padding-block: var(--space-xl);
  border-top: var(--rule-hair) solid var(--color-rule);
  transition: background var(--dur-short) var(--ease-out);
}
.index-list .index-row:last-child { border-bottom: var(--rule-hair) solid var(--color-rule); }
.index-row:hover { background: var(--color-paper-2); }
.index-row .num {
  font-family: var(--font-emph); font-size: var(--text-xl);
  color: var(--color-accent); font-weight: 700; line-height: 1;
}
.index-row h3 { font-size: var(--text-xl); }
.index-row .desc { color: var(--color-ink-2); font-size: var(--text-md); }
.index-row .go { align-self: center; color: var(--color-ink-3); }
.index-row:hover .go { color: var(--color-accent); }
@media (max-width: 820px){
  .index-row { grid-template-columns: 3rem 1fr; grid-template-areas: "num title" "num desc" "num go"; gap: var(--space-2xs) var(--space-md); }
  .index-row .num { grid-area: num; }
  .index-row h3 { grid-area: title; }
  .index-row .desc { grid-area: desc; margin-top: var(--space-2xs); }
  .index-row .go { grid-area: go; justify-self: start; margin-top: var(--space-sm); align-self: start; }
}

/* ------------------------------------------------------------------ *
 * Prose (Long Document / philosophy)
 * ------------------------------------------------------------------ */
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 var(--space-lg); color: var(--color-ink-2); }
.prose p.lead { font-size: var(--text-lg); color: var(--color-ink); line-height: 1.9; }
.prose .dropcap::first-letter {
  font-family: var(--font-display); font-size: 3.4em; line-height: 0.8;
  float: left; margin: 0.08em 0.12em 0 0; color: var(--color-accent);
}

.two-col {
  display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 5fr);
  gap: var(--space-2xl);
}
@media (max-width: 820px){ .two-col { grid-template-columns: 1fr; gap: var(--space-lg); } }

.stat-line { display: grid; gap: var(--space-lg); }
.pair { border-top: var(--rule-hair) solid var(--color-rule); padding-top: var(--space-md); }
.pair h4 { font-size: var(--text-lg); margin-bottom: var(--space-2xs); }
.pair p { margin: 0; color: var(--color-ink-2); }

/* ------------------------------------------------------------------ *
 * Split Studio (services detail — alternating diptych)
 * ------------------------------------------------------------------ */
.diptych {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0; align-items: stretch;
  border-top: var(--rule-hair) solid var(--color-rule);
}
.diptych:last-of-type { border-bottom: var(--rule-hair) solid var(--color-rule); }
.diptych__text { padding: var(--space-2xl) var(--space-xl) var(--space-2xl) 0; }
.diptych__panel {
  padding: var(--space-2xl);
  background: var(--color-paper-2);
  border-left: var(--rule-hair) solid var(--color-rule);
  display: flex; flex-direction: column; justify-content: center; gap: var(--space-md);
}
.diptych--flip .diptych__text { order: 2; padding: var(--space-2xl) 0 var(--space-2xl) var(--space-xl); }
.diptych--flip .diptych__panel { order: 1; border-left: none; border-right: var(--rule-hair) solid var(--color-rule); }
.diptych .num {
  font-family: var(--font-emph); font-size: var(--text-2xl);
  color: var(--color-accent); font-weight: 800; display: block; margin-bottom: var(--space-sm);
}
.diptych h3 { font-size: var(--text-2xl); margin-bottom: var(--space-md); }
.diptych p { color: var(--color-ink-2); margin: 0 0 var(--space-md); }
.panel-quote { font-family: var(--font-display); font-size: var(--text-xl); line-height: 1.6; color: var(--color-ink); }
.panel-tags { display: flex; flex-wrap: wrap; gap: var(--space-2xs); }
.tag {
  font-size: var(--text-xs); letter-spacing: 0.08em; color: var(--color-ink-2);
  border: var(--rule-hair) solid var(--color-rule-strong); padding: 0.4em 0.9em; border-radius: 100px;
}
@media (max-width: 820px){
  .diptych, .diptych--flip { grid-template-columns: 1fr; }
  .diptych__text, .diptych--flip .diptych__text { order: 1; padding: var(--space-xl) 0 var(--space-md); }
  .diptych__panel, .diptych--flip .diptych__panel {
    order: 2; padding: var(--space-xl); margin-bottom: var(--space-md);
    border-left: none; border-right: none; border-top: var(--rule-hair) solid var(--color-rule);
  }
}

/* ------------------------------------------------------------------ *
 * Dark editorial band (mission / vision / CTA)
 * ------------------------------------------------------------------ */
.band-dark {
  background: var(--color-band-dark); color: var(--color-ink-inv);
}
.band-dark .kicker { color: var(--color-accent-2); }
.band-dark h2, .band-dark h3 { color: var(--color-ink-inv); }
.band-dark p { color: oklch(86% 0.024 250); }
.band-dark .btn--ghost { color: var(--color-ink-inv); border-color: oklch(62% 0.05 255); }
.band-dark .btn--ghost:hover { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }

.cta-strip { text-align: left; }
.cta-strip h2 { font-size: var(--text-3xl); max-width: 18ch; margin-bottom: var(--space-lg); }

/* ------------------------------------------------------------------ *
 * Company table
 * ------------------------------------------------------------------ */
.spec { border-top: var(--rule-hair) solid var(--color-ink); }
.spec__row {
  display: grid; grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
  gap: var(--space-lg); padding-block: var(--space-md);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}
.spec__row dt { color: var(--color-ink-3); font-size: var(--text-sm); letter-spacing: 0.08em; margin: 0; }
.spec__row dd { margin: 0; color: var(--color-ink); }
.spec__row dd a { color: var(--color-accent-strong); text-underline-offset: 3px; }
@media (max-width: 560px){
  .spec__row { grid-template-columns: 1fr; gap: var(--space-3xs); }
}

/* ------------------------------------------------------------------ *
 * Footer · Ft1 mast-headed
 * ------------------------------------------------------------------ */
.foot {
  background: var(--color-band-dark); color: var(--color-ink-inv);
  padding-block: var(--space-2xl);
}
.foot__top {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--space-lg); flex-wrap: wrap;
  padding-bottom: var(--space-lg); border-bottom: var(--rule-hair) solid oklch(50% 0.06 260);
}
.foot__mark { font-family: var(--font-emph); font-size: clamp(2.4rem, 7vw, 4rem); font-weight: 800; }
.foot__mark .plus { color: var(--color-accent-2); }
.foot__tag { color: oklch(83% 0.03 250); font-size: var(--text-md); }
.foot__links { display: flex; gap: var(--space-lg); flex-wrap: wrap; }
.foot__links a { color: oklch(84% 0.03 250); text-decoration: none; font-size: var(--text-sm); letter-spacing: 0.08em; }
.foot__links a:hover { color: var(--color-ink-inv); }
.foot__links a:focus-visible { outline: 2px solid var(--color-accent-2); outline-offset: 3px; }
.foot__base {
  display: flex; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap;
  margin-top: var(--space-lg); color: oklch(72% 0.03 255); font-size: var(--text-xs); letter-spacing: 0.06em;
}

/* ------------------------------------------------------------------ *
 * Entrance motion (one quiet orchestrated reveal)
 * ------------------------------------------------------------------ */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.is-in { opacity: 1; transform: none; transition: opacity var(--dur-mid) var(--ease-out), transform var(--dur-mid) var(--ease-out); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: opacity 150ms linear; }
  .btn, .tlink, .masthead__nav a, .index-row { transition: none; }
}