@charset "UTF-8";

/* =========================================================
   株式会社ネクスト コーポレートサイト
   Design: 知性 × 重厚 / モノトーン（黒・白・グレー） / 明朝見出し
   v2 — エディトリアル演出強化版
   ========================================================= */

:root {
  --ink:        #141414;   /* 主背景・ほぼ黒 */
  --ink-2:      #1f1f1f;   /* 黒の少し明るい階調 */
  --ink-3:      #2b2b2b;
  --gold:       #b8b8b8;   /* アクセント（明背景の大要素／暗背景の文字）グレー */
  --gold-soft:  #d8d8d8;   /* 暗背景の小アクセント・ライトグレー */
  --gold-deep:  #333333;   /* 明背景の小アクセント・ダークグレー */
  --paper:      #f4f4f4;   /* オフホワイト */
  --paper-2:    #ebebeb;
  --white:      #ffffff;
  --text:       #1a1a1a;   /* 本文 */
  --muted:      #6a6a6a;   /* 補助テキスト */
  --muted-2:    #9a9a9a;
  --line:       #e4e4e4;   /* 罫線（明） */
  --line-dark:  rgba(255, 255, 255, .14);

  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans:  "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  --en:    "Cormorant Garamond", "Times New Roman", serif;   /* 英字アクセント */

  --maxw: 1120px;
  --radius: 2px;
  --shadow: 0 24px 50px -24px rgba(0, 0, 0, .35);
  --ease: cubic-bezier(.2, .7, .2, 1);

  /* 紙の質感（SVGノイズ） */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  color: var(--text);
  background: var(--white);
  line-height: 1.9;
  letter-spacing: .02em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 600; line-height: 1.5; }

/* ---------- 日本語の改行品質 ----------
   見出し・リード文は文節単位で折り返し（Chrome: BudouX）、
   行末の不自然な分断（「エンジ/ンへ」等）を防ぐ。
   非対応ブラウザでは通常の折返しに自然にフォールバック。 */
h1, h2, h3, h4,
.section-title, .statement__title, .page-hero h1,
.card h3, .usecase__head h2, .usecase__head h3, .strength h3, .step__body h3, .service__body h2, .service__body h3,
.cta-band h2 {
  word-break: auto-phrase;
  text-wrap: balance;
}
.section-lead, .lede, .lede--quiet, .hero__lead,
.page-hero p, .statement__body p, .cta-band p,
.card p, .strength p, .step__body p, .diagram-caption,
.problem-grid li, .quiet-contact p {
  word-break: auto-phrase;
  text-wrap: pretty;
}
/* ボタン内では改行させない */
.btn { white-space: nowrap; }
/* 分断したくない語をマークするユーティリティ */
.nb { white-space: nowrap; }
/* 句読点チャンク: 段落を 。、単位の塊で折り返し、行替えを句読点直後に揃える */
.s { display: inline-block; }

::selection { background: #b8b8b8; color: #0a0a0a; }
:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }

/* スキップリンク（フォーカス時のみ出現） */
.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 18px;
  border-radius: var(--radius); font-size: .9rem; font-weight: 600;
  transform: translateY(-200%); transition: transform .2s var(--ease);
}
.skip-link:focus { transform: none; }

/* scrollbar */
html { scrollbar-width: thin; scrollbar-color: #c4c4c4 transparent; }
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c9c9c9; border-radius: 100px; border: 2px solid #fff; }
::-webkit-scrollbar-thumb:hover { background: #8a8a8a; }

/* ---------- layout helpers ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }
.section { padding: 110px 0; }
.section--paper { background: var(--paper); }
.section--ink { background: var(--ink); color: #e9e9e9; position: relative; }
.section--ink::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: var(--grain); opacity: .05; mix-blend-mode: overlay;
}
.section--ink .container { position: relative; z-index: 1; }
.section--tight { padding: 80px 0; }
.center { text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .7em;
  font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: 1.05rem; letter-spacing: .3em; color: var(--gold-deep);
  text-transform: uppercase; margin: 0 0 18px;
}
.eyebrow::before { content: ""; width: 40px; height: 1px; background: currentColor; opacity: .6; }
.section--ink .eyebrow { color: var(--gold-soft); }

.section-title {
  font-size: clamp(1.8rem, 1.1rem + 2.3vw, 2.7rem);
  letter-spacing: .04em; margin-bottom: 24px;
}
.section-lead {
  max-width: 760px; color: var(--muted); font-size: 1.02rem; margin: 0 0 8px;
}
.section--ink .section-lead { color: #bdbdbd; }

/* ---------- buttons ---------- */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; gap: .55em;
  font-family: var(--sans); font-weight: 600; font-size: .95rem;
  letter-spacing: .06em; padding: 16px 32px; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer;
  transition: transform .3s var(--ease), background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.btn::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.35) 50%, transparent 60%);
  transform: translateX(-130%); transition: transform .7s var(--ease);
}
.btn:hover::before { transform: translateX(130%); }
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }
.btn--gold { background: #fff; color: var(--ink); }
.btn--gold::before { background: linear-gradient(105deg, transparent 40%, rgba(0,0,0,.08) 50%, transparent 60%); }
.btn--gold:hover { background: #e6e6e6; transform: translateY(-2px); box-shadow: 0 14px 30px -14px rgba(0,0,0,.5); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: #2e2e2e; transform: translateY(-2px); box-shadow: 0 14px 30px -14px rgba(0,0,0,.5); }
.btn--outline { border-color: rgba(255,255,255,.4); color: #fff; }
.btn--outline:hover { border-color: #fff; transform: translateY(-2px); }
.btn--ghost { border-color: var(--line); color: var(--text); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

/* =========================================================
   header / nav
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(16, 16, 16, .9);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-dark);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px; transition: height .35s var(--ease);
}
.site-header.is-scrolled .nav { height: 60px; }
.brand { display: flex; align-items: baseline; gap: .6em; color: #fff; }
.brand__mark {
  font-family: var(--serif); font-weight: 600; font-size: 1.3rem; letter-spacing: .06em;
}
.brand__mark .accent { color: var(--gold); }
.brand__sub { font-family: var(--en); font-style: italic; font-size: .85rem; letter-spacing: .3em; color: var(--muted-2); }

/* 読了プログレス（ヘッダー下端の白い線） */
.progress {
  position: absolute; left: 0; bottom: -1px; height: 2px; width: var(--progress, 0%);
  background: linear-gradient(90deg, #6e6e6e, #ffffff);
  transition: width .1s linear; pointer-events: none;
}

.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__links a {
  position: relative; color: #d2d2d2; font-size: .92rem; font-weight: 500;
  padding: 10px 16px; border-radius: var(--radius); transition: color .2s var(--ease);
}
.nav__links a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 1px;
  background: #fff; transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.nav__links a:hover, .nav__links a[aria-current="page"] { color: #fff; }
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { transform: scaleX(1); }
.nav__cta { margin-left: 10px; }
/* ナビCTA: ヒーローのタグと響き合う細枠ピル型。ホバーで白く満ちて反転 */
.nav__links a.nav__cta {
  background: transparent; color: #fff;
  border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 100px; padding: 10px 26px; font-size: .88rem;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.nav__links a.nav__cta:hover {
  background: #fff; color: var(--ink); border-color: #fff; transform: translateY(-1px); box-shadow: none;
}
.nav__links a.nav__cta[aria-current="page"] { background: #fff; color: var(--ink); border-color: #fff; }
.nav__links a.nav__cta::after { display: none; }

.nav__toggle {
  display: none; width: 44px; height: 44px; border: 0; background: transparent;
  cursor: pointer; position: relative;
}
.nav__toggle span::before, .nav__toggle span::after { content: ""; }
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  position: absolute; width: 22px; height: 2px; background: #fff;
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav__toggle span { left: 11px; top: 21px; }
.nav__toggle span::before { left: 0; top: -7px; }
.nav__toggle span::after { left: 0; top: 7px; }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ink); border-bottom: 1px solid var(--line-dark);
    padding: 12px 16px 22px;
    max-height: 0; overflow: hidden; opacity: 0; visibility: hidden;
    transition: max-height .35s var(--ease), opacity .25s var(--ease), padding .35s var(--ease), visibility 0s linear .35s;
  }
  .nav__links.is-open { transition: max-height .35s var(--ease), opacity .25s var(--ease), padding .35s var(--ease), visibility 0s; }
  .nav__links.is-open { max-height: 520px; opacity: 1; visibility: visible; }
  .nav__links a { padding: 14px 12px; border-bottom: 1px solid var(--line-dark); }
  .nav__links a::after { display: none; }
  .nav__cta { margin: 14px 12px 0; justify-content: center; }
}

/* =========================================================
   hero
   ========================================================= */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 600px at 78% -10%, rgba(255,255,255,.10), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(60,60,60,.9), transparent 55%),
    linear-gradient(160deg, #0a0a0a 0%, #141414 55%, #242424 100%);
  color: #fff;
}
/* 背景写真レイヤー（書庫の光）+ ゆっくり寄るケンバーンズ */
.hero__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero__bg img {
  width: 100%; height: 100%; object-fit: cover; object-position: center 38%;
  opacity: .52; filter: grayscale(1) contrast(1.05);
  animation: heroZoom 16s var(--ease) both;
}
@keyframes heroZoom { from { transform: scale(1.09); } to { transform: scale(1); } }
.hero__scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(100deg, rgba(8,8,8,.92) 0%, rgba(8,8,8,.62) 46%, rgba(10,10,10,.35) 70%, rgba(12,12,12,.78) 100%),
    linear-gradient(to top, rgba(8,8,8,.9) 0%, transparent 30%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 2;
  background-image: var(--grain); opacity: .06; mix-blend-mode: overlay;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 2;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(900px 600px at 70% 30%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(900px 600px at 70% 30%, #000, transparent 75%);
}
.hero__inner { position: relative; z-index: 3; padding-block: 148px 164px; }
.hero__tag {
  display: inline-block; font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: .95rem; letter-spacing: .32em; color: var(--gold-soft);
  border: 1px solid rgba(255,255,255,.28); border-radius: 100px; padding: 8px 22px; margin-bottom: 34px;
}
.hero__title {
  font-size: clamp(2.4rem, 1.4rem + 5vw, 4.8rem);
  line-height: 1.28; letter-spacing: .04em; margin-bottom: 32px;
}
.hero__title .gold { color: var(--gold); }
/* 1字ずつ立ち上がる（JSが .char を生成。JSなしでも通常表示） */
.hero__title .char {
  display: inline-block; opacity: 0;
  transform: translateY(.55em) rotate(1.5deg);
  animation: charIn .85s var(--ease) forwards;
  animation-delay: calc(var(--ci, 0) * .038s);
}
@keyframes charIn { to { opacity: 1; transform: none; } }
.hero__lead {
  max-width: 640px; font-size: 1.06rem; color: #c7c7c7; margin-bottom: 44px;
  animation: riseIn 1s var(--ease) .55s both;
}
.hero__lead strong { color: #fff; font-weight: 600; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; animation: riseIn 1s var(--ease) .75s both; }
@keyframes riseIn { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }

.hero__scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  z-index: 3; font-family: var(--en); font-style: italic;
  font-size: .8rem; letter-spacing: .34em; color: var(--muted-2);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero__scroll::after {
  content: ""; width: 1px; height: 44px;
  background: linear-gradient(#fff, transparent);
  animation: scrollPulse 2.2s var(--ease) infinite;
}
@keyframes scrollPulse {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- marquee（流れる帯 / JSが挿入） ---------- */
.marquee {
  overflow: hidden; background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 20px 0; white-space: nowrap;
}
.marquee__track {
  display: inline-flex; align-items: baseline; gap: 56px; width: max-content;
  animation: marquee 38s linear infinite; will-change: transform;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item { font-family: var(--serif); font-size: 1.05rem; letter-spacing: .14em; color: var(--gold-deep); }
.marquee__item--en { font-family: var(--en); font-style: italic; font-weight: 600; font-size: 1.15rem; letter-spacing: .22em; color: var(--muted-2); }
.marquee__sep { color: var(--muted-2); font-size: .8rem; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- statement（トップ: 思想宣言） ---------- */
.statement { background: var(--white); }
.statement__grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.statement__fig { margin: 0; }
.statement__fig img { width: 100%; height: auto; aspect-ratio: 1376 / 768; object-fit: cover; border: 1px solid var(--line); display: block; }
.statement__fig figcaption {
  font-family: var(--en); font-style: italic; font-size: .9rem;
  letter-spacing: .22em; color: var(--muted-2); text-align: right; padding: 12px 2px 0;
}
@media (max-width: 920px) { .statement__grid { grid-template-columns: 1fr; gap: 40px; } }

/* ---------- timeline（知の時間軸） ---------- */
.tl__track { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 28px; margin-top: 64px; }
.tl__line {
  position: absolute; left: 0; right: 0; top: 79px; height: 2px; z-index: 0;
  background: linear-gradient(90deg, var(--ink) 70%, var(--muted-2));
  transform: scaleX(0); transform-origin: left;
  transition: transform 1.8s var(--ease) .2s;
}
.tl__item.in ~ .tl__line { transform: scaleX(1); }
.tl__item { text-align: center; }
.tl__year {
  height: 56px; display: flex; align-items: flex-end; justify-content: center;
  font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: clamp(1.7rem, 1.2rem + 1.4vw, 2.4rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 1px #8a8a8a; letter-spacing: .04em;
}
@supports not (-webkit-text-stroke: 1px #fff) { .tl__year { color: #c9c9c9; } }
.tl__dotrow { position: relative; z-index: 1; height: 26px; margin: 10px 0 20px; display: flex; align-items: center; justify-content: center; }
.tl__dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--ink);
}
.tl__img { margin: 0 auto 18px; max-width: 200px; overflow: hidden; border: 1px solid var(--line); }
.tl__img img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; filter: grayscale(1) contrast(1.04); transition: transform .8s var(--ease); }
.tl__item:hover .tl__img img { transform: scale(1.05); }
.tl__name { font-size: 1.05rem; letter-spacing: .05em; margin-bottom: 8px; }
.tl__desc { font-size: .85rem; color: var(--muted); margin: 0; line-height: 1.8; }
/* 最終ノード「いま」を強調 */
.tl__item--now .tl__year { color: var(--ink); -webkit-text-stroke: 0; }
.tl__item--now .tl__dot { background: var(--ink); position: relative; }
.tl__item--now .tl__dot::after {
  content: ""; position: absolute; inset: -8px; border-radius: 50%;
  border: 1px solid var(--ink); opacity: 0; animation: dotPulse 2.6s var(--ease) infinite 1.4s;
}
@keyframes dotPulse { 0% { transform: scale(.5); opacity: .7; } 70%, 100% { transform: scale(1.25); opacity: 0; } }
.tl__item--now .tl__img { border-color: #9a9a9a; }
@media (max-width: 880px) {
  .tl__track { grid-template-columns: 1fr; gap: 44px; margin-top: 40px; }
  .tl__line, .tl__dotrow { display: none; }
  .tl__item { max-width: 420px; margin-inline: auto; }
  .tl__year { height: auto; margin-bottom: 12px; }
}
.statement__title {
  font-size: clamp(1.6rem, 1rem + 2.6vw, 2.9rem);
  line-height: 1.62; letter-spacing: .05em; margin-bottom: 38px;
}
.statement__body p {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1rem + .5vw, 1.3rem);
  line-height: 2.2; letter-spacing: .04em;
  color: var(--text); margin: 0 0 1.6em; max-width: 880px;
}
.statement__body p:last-child { margin-bottom: 0; }
.statement__body strong { font-weight: 600; }
/* PCのみ改行 */
@media (max-width: 640px) { .br-pc { display: none; } }

/* ---------- sub-page hero ---------- */
.page-hero {
  background:
    radial-gradient(800px 400px at 85% -20%, rgba(255,255,255,.09), transparent 60%),
    linear-gradient(160deg, #0a0a0a, #242424);
  color: #fff; padding: 104px 0 88px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: var(--grain); opacity: .05; mix-blend-mode: overlay;
}
/* 巨大ゴーストEN（data-en 属性から） */
.page-hero[data-en]::after {
  content: attr(data-en); position: absolute; right: -0.04em; bottom: -0.18em;
  z-index: 0; pointer-events: none; user-select: none;
  font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: clamp(4.2rem, 13vw, 10.5rem); line-height: 1; letter-spacing: .04em;
  color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.12);
  white-space: nowrap;
}
@supports not (-webkit-text-stroke: 1px #fff) { .page-hero[data-en]::after { color: rgba(255,255,255,.05); } }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(2rem, 1.2rem + 2.9vw, 3.2rem); letter-spacing: .05em; margin-bottom: 18px; }
.page-hero p { max-width: 680px; color: #c4c4c4; margin: 0; }

/* 控えめバリアント（会社概要など、静かに見せたいページ） */
.page-hero--quiet { padding: 64px 0 52px; }
.page-hero--quiet h1 { font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.8rem); margin-bottom: 10px; }
.page-hero--quiet p { font-size: .92rem; color: #a8a8a8; }

.info-table--compact { max-width: 760px; }
.info-table--compact th, .info-table--compact td { padding: 16px 8px; font-size: .92rem; }
.info-table--compact th { width: 160px; font-size: .92rem; font-weight: 600; }
.info-table--compact .ticks { gap: 6px; }
.info-table--compact .ticks li { font-size: .88rem; }

.lede--quiet {
  font-size: 1rem; line-height: 2.1; color: var(--muted);
  font-family: var(--serif); letter-spacing: .04em; max-width: 720px;
}

.quiet-contact { text-align: center; padding: 64px 0 88px; }
.quiet-contact p { color: var(--muted); font-size: .95rem; margin: 0 0 22px; }
.breadcrumb { font-size: .8rem; letter-spacing: .08em; color: var(--muted-2); margin-bottom: 22px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: var(--gold-soft); }

/* =========================================================
   generic blocks
   ========================================================= */
.lede {
  font-family: var(--serif); font-size: clamp(1.2rem, 1rem + .8vw, 1.55rem);
  line-height: 1.95; letter-spacing: .04em; color: var(--text); max-width: 880px;
}
.section--ink .lede { color: #efefef; }

.prose p { margin: 0 0 1.3em; color: var(--muted); }
.prose p:last-child { margin-bottom: 0; }
.section--ink .prose p { color: #c6c6c6; }

/* grid */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

/* card */
.card {
  position: relative; overflow: hidden;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 30px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
/* 上辺に伸びるキーライン */
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--ink); transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
/* 編集デザイン風の「+」 */
.card::after {
  content: "+"; position: absolute; top: 14px; right: 18px;
  font-family: var(--en); font-size: 1.1rem; color: var(--muted-2);
  transition: transform .4s var(--ease), color .3s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #cfcfcf; }
.card:hover::before { transform: scaleX(1); }
.card:hover::after { transform: rotate(90deg); color: var(--ink); }
.card__no {
  font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: 1.3rem; color: #767676; letter-spacing: .08em; margin-bottom: 14px;
  display: flex; align-items: center; gap: 12px;
}
.card__no::after { content: ""; flex: 0 0 32px; height: 1px; background: var(--line); }
.card h3 { font-size: 1.22rem; letter-spacing: .03em; margin-bottom: 14px; }
.card p { color: var(--muted); font-size: .96rem; margin: 0; }

/* feature list with check marks */
.ticks { margin-top: 18px; display: grid; gap: 10px; }
.ticks li {
  position: relative; padding-left: 26px; font-size: .92rem; color: var(--text); line-height: 1.7;
}
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: .62em;
  width: 5px; height: 5px; background: var(--gold-deep);
}
.section--ink .ticks li { color: #d6d6d6; }
.section--ink .ticks li::before { background: var(--gold-soft); }

/* problem callout (dark) */
.problem-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line-dark); border: 1px solid var(--line-dark); border-radius: var(--radius); overflow: hidden; }
.problem-grid li {
  background: var(--ink-2); padding: 28px 30px; color: #cccccc; font-size: .96rem; line-height: 1.8;
  transition: background .35s var(--ease);
}
.problem-grid li:hover { background: #262626; }
.problem-grid li strong { display: block; font-family: var(--serif); color: #fff; font-size: 1.06rem; margin-bottom: 8px; letter-spacing: .03em; }
@media (max-width: 720px){ .problem-grid { grid-template-columns: 1fr; } }

/* numbered service blocks */
.service { position: relative; display: grid; grid-template-columns: 120px 1fr 320px; gap: 34px; align-items: start; padding: 56px 0; border-top: 1px solid var(--line); }
.service__photo {
  margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius);
  align-self: center;
}
.service__photo img {
  width: 100%; aspect-ratio: 3 / 2; object-fit: cover;
  filter: grayscale(1) contrast(1.04);
  transition: transform .8s var(--ease);
}
.service:hover .service__photo img { transform: scale(1.04); }
@media (max-width: 1020px) {
  .service { grid-template-columns: 120px 1fr; }
  .service__photo { grid-column: 1 / -1; max-width: 560px; }
}
.service:first-of-type { border-top: 0; }
.service__num {
  font-family: var(--en); font-style: italic; font-weight: 500;
  font-size: 4.6rem; line-height: .9; letter-spacing: .02em;
  color: transparent; -webkit-text-stroke: 1px #767676;
}
@supports not (-webkit-text-stroke: 1px #fff) { .service__num { color: #d8d8d8; } }
.service__body h2, .service__body h3 { font-size: 1.45rem; margin-bottom: 14px; letter-spacing: .03em; }
.service__body > p { color: var(--muted); margin: 0 0 6px; }
.service__detail { margin-top: 24px; border-left: 2px solid var(--line); padding-left: 24px; }
.service__detail h4 { font-family: var(--en); font-style: italic; font-size: 1rem; font-weight: 600; letter-spacing: .26em; color: var(--gold-deep); margin-bottom: 14px; text-transform: uppercase; }
.service__detail .ticks { grid-template-columns: 1fr 1fr; gap: 10px 28px; }
@media (max-width: 760px){
  .service { grid-template-columns: 1fr; gap: 14px; }
  .service__num { font-size: 3rem; }
  .service__detail .ticks { grid-template-columns: 1fr; }
}

/* use-case cards */
.usecase { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .35s var(--ease), transform .35s var(--ease), border-color .35s var(--ease); }
.usecase:hover { box-shadow: var(--shadow); transform: translateY(-5px); border-color: #cfcfcf; }
.usecase__head { position: relative; overflow: hidden; background: linear-gradient(135deg, var(--ink), var(--ink-3)); color: #fff; padding: 30px 32px; }
.usecase__head::before { content: ""; position: absolute; inset: 0; background-image: var(--grain); opacity: .06; mix-blend-mode: overlay; pointer-events: none; }
.usecase__head .tag { font-family: var(--en); font-style: italic; font-weight: 600; font-size: .92rem; letter-spacing: .3em; color: var(--gold-soft); display: block; margin-bottom: 10px; }
.usecase__head h2, .usecase__head h3 { font-size: 1.28rem; letter-spacing: .03em; }
.usecase__body { padding: 30px 32px; }
.usecase__body > p { color: var(--muted); font-size: .96rem; margin: 0 0 16px; }
.usecase__body p a { color: var(--text); font-weight: 600; border-bottom: 1px solid var(--muted-2); transition: border-color .2s var(--ease); }
.usecase__body p a:hover { border-bottom-color: var(--ink); }
.usecase__body h4 { font-family: var(--sans); font-size: .78rem; font-weight: 700; letter-spacing: .14em; color: var(--gold-deep); margin: 18px 0 12px; }

/* 関連する事業内容バッジ（活用事例 → 事業内容への導線） */
.svc-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px; }
.svc-tag {
  display: inline-flex; align-items: center; gap: .55em;
  font-size: .82rem; font-weight: 600; color: var(--text);
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 100px; padding: 5px 16px 5px 5px;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.svc-tag .n {
  display: inline-grid; place-items: center; width: 26px; height: 26px;
  border-radius: 50%; background: var(--ink); color: #fff;
  font-family: var(--en); font-weight: 600; font-size: .85rem; letter-spacing: 0;
}
.svc-tag:hover { border-color: var(--ink); background: #fff; transform: translateY(-2px); box-shadow: 0 10px 20px -12px rgba(0,0,0,.35); }
.svc-tags--mini { margin-top: 16px; }
.svc-tags--mini .svc-tag { padding: 5px; }
.usecase__body .svc-label { font-family: var(--en); font-style: italic; font-size: .95rem; font-weight: 600; letter-spacing: .26em; color: var(--gold-deep); margin: 22px 0 0; text-transform: uppercase; }

/* 横長レイアウト（左に濃色ラベル、右に本文） */
.usecase--wide { display: grid; grid-template-columns: 300px 1fr; }
.usecase--wide .usecase__head { display: flex; flex-direction: column; justify-content: center; padding: 36px 32px; }
.usecase--wide .usecase__head .tag { margin-bottom: 12px; }
.usecase--wide .usecase__body { padding: 36px 38px; }
.usecase-list { display: grid; gap: 24px; }
@media (max-width: 760px){ .usecase--wide { grid-template-columns: 1fr; } }

/* strengths */
.strength {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: 56px 1fr; gap: 22px; padding: 32px 30px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .35s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.strength::before {
  content: ""; position: absolute; top: 0; left: 0; bottom: 0; width: 2px;
  background: var(--ink); transform: scaleY(0); transform-origin: top;
  transition: transform .45s var(--ease);
}
.strength:hover { border-color: #cfcfcf; transform: translateY(-4px); box-shadow: var(--shadow); }
.strength:hover::before { transform: scaleY(1); }
.strength__no {
  font-family: var(--en); font-style: italic; font-weight: 600; font-size: 1.5rem;
  width: 56px; height: 56px; display: grid; place-items: center;
  border: 1px solid var(--gold); border-radius: 50%; color: var(--gold-deep);
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.strength:hover .strength__no { background: var(--ink); color: #fff; border-color: var(--ink); }
.strength h3 { font-size: 1.12rem; margin-bottom: 10px; letter-spacing: .03em; }
.strength p { color: var(--muted); font-size: .94rem; margin: 0; }

/* pipeline diagram（制作フロー図面: inline SVG） */
.diagram {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; overflow-x: auto; margin: 0;
}
.diagram svg { min-width: 1000px; width: 100%; height: auto; display: block; }
.diagram text { font-family: var(--sans); fill: #1a1a1a; }
.dg-box { fill: #fff; stroke: #1a1a1a; stroke-width: 1.2; }
.dg-box--ink { fill: #141414; }
.dg-ic { fill: none; stroke: #1a1a1a; stroke-width: 1.4; stroke-linejoin: round; stroke-linecap: round; }
.dg-ic--w { stroke: #fff; }
.dg-fill { fill: #fff; stroke: #1a1a1a; stroke-width: 1.4; stroke-linejoin: round; }
.dg-label { font-size: 13px; font-weight: 600; letter-spacing: .04em; text-anchor: middle; }
.diagram .dg-label--w { fill: #fff; }
.diagram .dg-cap { font-family: var(--en); font-style: italic; font-size: 11px; letter-spacing: .2em; fill: #767676; text-anchor: middle; }
.diagram .dg-cap2 { font-size: 10px; letter-spacing: .1em; fill: #6a6a6a; text-anchor: middle; }
.diagram .dg-or { font-family: var(--en); font-style: italic; font-size: 15px; fill: #6a6a6a; text-anchor: middle; }
.diagram .dg-bn { font-family: var(--en); font-style: italic; font-weight: 600; font-size: 11px; fill: #fff; text-anchor: middle; }
.diagram .dg-cap--w { fill: #b8b8b8; }
.diagram .dg-note { font-size: 12px; fill: #6a6a6a; letter-spacing: .06em; }
.diagram .dg-loop { font-size: 11.5px; fill: #6a6a6a; letter-spacing: .06em; text-anchor: middle; }
.dg-line { stroke: #1a1a1a; stroke-width: 1.4; fill: none; }
.dg-dash { stroke: #8a8a8a; stroke-width: 1.3; fill: none; stroke-dasharray: 5 5; }
.diagram-caption { font-size: .85rem; color: var(--muted); margin: 14px 4px 0; }

/* process steps — フェーズ見出しと分岐チップ */
.steps-phase { display: grid; grid-template-columns: 64px 1fr; gap: 26px; padding: 30px 0 26px; }
.steps-phase:first-child { padding-top: 0; }
.steps-phase__label { border-top: 1px solid var(--line); padding-top: 20px; }
.steps-phase:first-child .steps-phase__label { border-top: 0; padding-top: 0; }
.steps-phase__label .ph {
  display: block; font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: 1rem; letter-spacing: .28em; color: var(--muted-2); margin-bottom: 4px;
}
.steps-phase__label strong { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; letter-spacing: .04em; color: var(--ink); }
.steps-phase__label small { display: block; font-size: .82rem; color: var(--muted); margin-top: 2px; }
/* フェーズ末尾のステップは縦線をフェードアウトさせて区切る */
.step--end:not(:last-child)::before { bottom: 14px; background: linear-gradient(var(--ink), transparent); }

/* A/B 分岐チップ */
.fork { display: flex; align-items: stretch; gap: 14px; flex-wrap: wrap; margin: 14px 0 4px; }
.fork__opt {
  display: flex; align-items: center; gap: 12px; flex: 1 1 260px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--white);
  padding: 14px 18px; transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.fork__opt:hover { border-color: var(--ink); transform: translateY(-2px); box-shadow: 0 12px 24px -16px rgba(0,0,0,.3); }
.fork__opt .n {
  flex: 0 0 30px; display: grid; place-items: center; width: 30px; height: 30px;
  border-radius: 50%; background: var(--ink); color: #fff;
  font-family: var(--en); font-style: italic; font-weight: 600; font-size: .9rem;
}
.fork__opt strong { display: block; font-size: .92rem; letter-spacing: .03em; color: var(--ink); }
.fork__opt small { display: block; font-size: .8rem; color: var(--muted); }
.fork__or { align-self: center; font-family: var(--en); font-style: italic; font-size: 1rem; color: var(--muted-2); }
@media (max-width: 760px){
  .steps-phase { grid-template-columns: 1fr; gap: 8px; }
  .fork__or { flex: 1 0 100%; text-align: center; align-self: auto; }
}

/* process steps */
.steps { counter-reset: step; display: grid; gap: 0; max-width: 820px; }
.step { position: relative; display: grid; grid-template-columns: 64px 1fr; gap: 26px; padding: 0 0 44px 0; }
.step:not(:last-child)::before { content: ""; position: absolute; left: 31px; top: 12px; bottom: -12px; width: 2px; background: linear-gradient(var(--ink), var(--line)); }
/* 手順ステップは「白丸＋素の数字」: 黒丸斜体の事業内容番号(01〜04)と視覚的に区別 */
.step__num {
  position: relative; z-index: 1; counter-increment: step;
  width: 64px; height: 64px; border-radius: 50%;
  background: #fff; color: var(--ink);
  font-family: var(--en); font-weight: 600; font-size: 1.45rem;
  display: grid; place-items: center;
  border: 1px solid var(--ink);
  transition: background .35s var(--ease), color .35s var(--ease), transform .35s var(--ease);
}
.step__num::before { content: counter(step); }
.step:hover .step__num { background: var(--ink); color: #fff; transform: scale(1.06); }
.step__body { padding-top: 8px; }
.step__body h3 { font-size: 1.18rem; margin-bottom: 8px; letter-spacing: .03em; }
.step__body p { color: var(--muted); font-size: .95rem; margin: 0; }

/* info table */
.info-table { width: 100%; border-collapse: collapse; }
.info-table th, .info-table td { text-align: left; padding: 24px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.info-table th { width: 220px; font-family: var(--serif); font-weight: 600; font-size: 1rem; color: var(--ink); letter-spacing: .04em; }
.info-table td { color: var(--text); }
.info-table .note { display: block; color: var(--muted); font-size: .82rem; margin-top: 6px; }
@media (max-width: 640px){ .info-table th, .info-table td { display: block; width: 100%; } .info-table th { border-bottom: 0; padding-bottom: 4px; } .info-table td { padding-top: 4px; } }

/* =========================================================
   contact
   ========================================================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
@media (max-width: 880px){ .contact-grid { grid-template-columns: 1fr; gap: 32px; } }
.form { display: grid; gap: 20px; }
.form .field { display: grid; gap: 8px; }
.form label { font-size: .88rem; font-weight: 600; letter-spacing: .04em; color: var(--ink); }
.form label .req { color: #555555; font-size: .78rem; margin-left: .4em; }
.form label .opt { color: var(--muted-2); font-size: .78rem; margin-left: .4em; }

.form fieldset.field { border: 0; padding: 0; margin: 0; min-width: 0; }
.form legend { font-size: .88rem; font-weight: 600; letter-spacing: .04em; color: var(--ink); padding: 0; margin-bottom: 2px; }

/* 区分トグル（法人・団体／個人） */
.seg { display: flex; gap: 10px; }
.seg__opt {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 12px 10px; border: 1px solid var(--line); border-radius: var(--radius);
  font-size: .95rem; font-weight: 600; color: var(--muted); cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.seg__opt input { position: absolute; opacity: 0; pointer-events: none; }
.seg__opt:hover { border-color: var(--ink); color: var(--ink); }
.seg__opt:has(input:checked),
.seg__opt.is-checked { background: var(--ink); color: #fff; border-color: var(--ink); }
.seg__opt:focus-within { outline: 2px solid var(--ink); outline-offset: 3px; }
.form input, .form select, .form textarea {
  font-family: var(--sans); font-size: .98rem; color: var(--text);
  padding: 13px 15px; border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; width: 100%; transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: #888; box-shadow: 0 0 0 3px rgba(0,0,0,.10);
}
.form textarea { resize: vertical; min-height: 150px; line-height: 1.8; }
.form ::placeholder { color: #767676; opacity: 1; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 560px){ .form .row2 { grid-template-columns: 1fr; } }
.form__note { font-size: .82rem; color: var(--muted); margin: 0; }

.checklist { display: grid; gap: 10px; }
.checklist li { padding-left: 26px; position: relative; color: var(--text); }
.checklist li::before { content: ""; position: absolute; left: 2px; top: .65em; width: 5px; height: 5px; background: var(--gold-deep); }

/* =========================================================
   CTA band
   ========================================================= */
.cta-band {
  background:
    linear-gradient(rgba(9,9,9,.84), rgba(9,9,9,.84)),
    url("../img/hero_archive.jpg") center 30% / cover no-repeat;
  color: #fff; text-align: center; padding: 104px 0; position: relative; overflow: hidden;
}
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(600px 300px at 50% -30%, rgba(255,255,255,.14), transparent 60%); }
.cta-band::after { content: ""; position: absolute; inset: 0; background-image: var(--grain); opacity: .05; mix-blend-mode: overlay; pointer-events: none; }
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 { font-size: clamp(1.7rem, 1.1rem + 2vw, 2.5rem); letter-spacing: .04em; margin-bottom: 16px; }
.cta-band p { color: #c6c6c6; max-width: 640px; margin: 0 auto 34px; }

/* =========================================================
   footer
   ========================================================= */
.site-footer { background: #0a0a0a; color: #b0b0b0; padding: 72px 0 0; font-size: .9rem; position: relative; overflow: hidden; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid var(--line-dark); }
.footer-brand .brand__mark { font-size: 1.4rem; }
.footer-brand p { color: var(--muted-2); margin: 16px 0 0; max-width: 320px; font-size: .86rem; }
.footer-col .footer-head { display: block; font-family: var(--en); font-style: italic; font-size: .95rem; font-weight: 600; letter-spacing: .3em; color: var(--gold-soft); margin-bottom: 16px; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { position: relative; transition: color .2s var(--ease), padding-left .25s var(--ease); }
.footer-col a:hover { color: #fff; padding-left: 10px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; color: var(--muted-2); font-size: .8rem; flex-wrap: wrap; gap: 10px; }
/* 特大アウトラインワードマーク */
.site-footer::after {
  content: "Next Co., Ltd."; display: block; text-align: center;
  font-family: var(--en); font-style: italic; font-weight: 600;
  font-size: clamp(2.6rem, 9vw, 7.2rem); line-height: .95; letter-spacing: .06em;
  color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.1);
  user-select: none; pointer-events: none;
  margin-top: 34px; transform: translateY(.12em);
}
@supports not (-webkit-text-stroke: 1px #fff) { .site-footer::after { color: rgba(255,255,255,.04); } }
@media (max-width: 760px){ .footer-top { grid-template-columns: 1fr; gap: 28px; } }

/* =========================================================
   scroll reveal
   ========================================================= */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__bg img { animation: none; }
  .tl__item--now .tl__dot::after { animation: none; }
  .tl__line { transition: none; transform: scaleX(1); }
  .hero__title .char { animation: none; opacity: 1; transform: none; }
  .hero__lead, .hero__actions { animation: none; }
  .hero__scroll::after { animation: none; }
  .marquee__track { animation: none; }
  html { scroll-behavior: auto; }
}

/* anchor offset for sticky header */
:target { scroll-margin-top: 90px; }