/* Koelearn Technology — 共通スタイル
   デザインコンセプト「海図（Nautical Chart）」
   - 紙の白地 × 深海のインク、等深線のテクスチャ、ヘアラインの罫線
   - 見出し：明朝 / 本文：ゴシック / 技術データ：等幅
   - 角丸・影・グラデーションのカードは使わない
   - 動き：方向付きスクロール表示（data-anim）、タイプライター、公報ボードの逐行表示、等深線の漂流
   ブレークポイント: 640px / 960px。色は必ず :root のトークンを使うこと */

:root {
  --paper: #f4f2ec;     /* 海図の紙 */
  --paper-2: #e9e6dd;   /* 一段沈んだ紙 */
  --white: #fbfaf7;
  --ink: #0a1f33;       /* 深海のインク */
  --ink-2: #13324d;
  --ocean: #0f4c75;     /* 海 */
  --sea: #17658c;       /* 波 */
  --teal: #128c8c;      /* 浅瀬 */
  --tide: #7fc4c9;      /* 潮 */
  --foam: #dcecee;      /* 泡 */
  --signal: #e8590c;    /* 灯浮標（緊急・CTA のみ。深色背景上で使用） */
  --signal-deep: #b23f00; /* 明るい背景・白文字用（AA 準拠） */
  --muted: #52636f;
  --rule: rgba(10, 31, 51, .16);
  --rule-strong: rgba(10, 31, 51, .55);
  --rule-dark: rgba(127, 196, 201, .22);
  --danger: #b3261e;

  /* 旧トークン互換 */
  --abyss: var(--ink); --deep: var(--ink-2); --wave: var(--sea); --aqua: var(--tide); --sand: var(--signal); --line: var(--rule);

  --mincho: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", "BIZ UDPMincho", serif;
  --gothic: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  --mono: "SF Mono", "Menlo", "Consolas", "Roboto Mono", "Liberation Mono", monospace;

  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --container: 1240px;
  --header-h: 68px;
  --gutter: 16px;
}
@media (min-width: 640px) { :root { --gutter: 32px; } }
@media (min-width: 960px) { :root { --gutter: 48px; } }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  font-family: var(--gothic);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  overflow-wrap: anywhere;
  line-break: strict;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--ocean); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: var(--teal); }
h1, h2, h3, h4 { font-family: var(--mincho); font-weight: 600; line-height: 1.45; margin: 0 0 .6em; color: var(--ink); letter-spacing: .04em; font-feature-settings: "palt" 1; }
h1 { font-size: clamp(2rem, 1.1rem + 4vw, 4.4rem); line-height: 1.3; letter-spacing: .02em; }
h2 { font-size: clamp(1.55rem, 1.1rem + 1.8vw, 2.5rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.3em; }
::selection { background: var(--tide); color: var(--ink); }
:focus-visible { outline: 2px solid var(--signal-deep); outline-offset: 3px; }
.section--dark :focus-visible, .cta-band :focus-visible, .board :focus-visible, .bulletin-bar :focus-visible, .site-footer :focus-visible { outline-color: var(--tide); }

.skip-link { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; z-index: 100; }
.skip-link:focus { left: 8px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.mono { font-family: var(--mono); letter-spacing: .02em; }

/* ---------- レイアウト ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.section { position: relative; padding: 72px 0; border-top: 1px solid var(--rule); }
@media (min-width: 960px) { .section { padding: 112px 0; } }
.section--alt { background: var(--paper-2); }
.section--dark { background: var(--ink); color: #c9dde3; border-top-color: transparent; overflow: clip; }
.section--dark::before { content: ""; position: absolute; inset: -10%; background: url("/img/contours-dark.svg?v=358f916006") right top / 1100px auto no-repeat; animation: drift 60s ease-in-out infinite alternate; pointer-events: none; }
.section--dark > .container { position: relative; }
.section--dark h2, .section--dark h3 { color: var(--white); }
.section--dark a:not(.btn) { color: var(--tide); }
.section--dark .btn { color: var(--paper); border-color: rgba(244, 242, 236, .5); }
.section--dark .btn--signal { color: var(--white); border-color: var(--signal); }
.section__head { max-width: 760px; margin-bottom: 48px; }
.section__head--center { margin-left: auto; margin-right: auto; text-align: center; }

/* 見出しラベル：「SERVICES ──」 */
.eyebrow { display: inline-flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: .76rem; letter-spacing: .18em; text-transform: uppercase; color: var(--sea); margin-bottom: 14px; }
.eyebrow::after { content: ""; width: 40px; height: 1px; background: currentColor; }
.section--dark .eyebrow { color: var(--tide); }
.lead { font-size: 1.06rem; color: var(--muted); }
.section--dark .lead { color: #a9c3cc; }

/* 章立てレイアウト：左に縦書きの章ラベル（デスクトップ）、右に本文
   <div class="sec"><p class="sec__label"><span class="num">02</span><span class="ja">選ばれる理由</span></p><div>…</div></div> */
.sec { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; }
.sec__label { display: flex; align-items: baseline; gap: 14px; margin: 0; font-family: var(--mincho); color: var(--ink); }
.sec__label .num { font-family: var(--mono); font-size: .8rem; color: var(--sea); letter-spacing: .1em; }
.sec__label .ja { font-size: 1rem; letter-spacing: .3em; }
.section--dark .sec__label { color: var(--white); }
.section--dark .sec__label .num { color: var(--tide); }
@media (min-width: 960px) {
  .sec { grid-template-columns: 88px minmax(0, 1fr); gap: 48px; }
  .sec__label { flex-direction: column; align-items: center; gap: 18px; position: sticky; top: calc(var(--header-h) + 32px); align-self: start; padding-top: 14px; border-top: 1px solid var(--rule-strong); }
  .section--dark .sec__label { border-top-color: var(--rule-dark); }
  .sec__label .ja { writing-mode: vertical-rl; font-size: 1.05rem; }
}

.grid { display: grid; gap: 24px; }
@media (min-width: 640px) { .grid--2, .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 960px) { .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .grid { gap: 32px; } }

/* ---------- 告知バー（ヘッダー上部・全ページ共通） ---------- */
.bulletin-bar { background: var(--ink); color: #c9dde3; font-family: var(--mono); font-size: .74rem; letter-spacing: .04em; }
.bulletin-bar .container { display: flex; align-items: center; gap: 12px; min-height: 36px; padding-top: 6px; padding-bottom: 6px; }
.bulletin-bar a { color: var(--white); text-decoration: none; display: flex; flex-wrap: wrap; gap: 2px 12px; align-items: center; }
.bulletin-bar a:hover { color: var(--tide); }
.bulletin-bar .tag { color: var(--signal); font-weight: 700; letter-spacing: .12em; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--signal); flex: none; box-shadow: 0 0 0 0 rgba(232, 89, 12, .6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px rgba(232, 89, 12, 0); } 100% { box-shadow: 0 0 0 0 rgba(232, 89, 12, 0); } }

/* ---------- ヘッダー ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(244, 242, 236, .92); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule-strong); transition: background .3s, box-shadow .3s; }
.site-header.is-scrolled { background: rgba(244, 242, 236, .98); box-shadow: 0 1px 0 var(--rule-strong), 0 12px 24px -20px rgba(10, 31, 51, .5); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); transition: height .3s var(--ease-out); }
.site-header.is-scrolled .container { height: 56px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; }
.brand img { width: 34px; height: 34px; transition: transform .6s var(--ease-out); }
.brand:hover img { transform: rotate(-8deg); }
.brand__name { display: flex; flex-direction: column; line-height: 1.25; font-family: var(--mincho); font-weight: 600; font-size: 1.05rem; letter-spacing: .12em; }
.brand__name small { font-family: var(--mono); font-size: .62rem; color: var(--muted); font-weight: 400; letter-spacing: .24em; }

.nav-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 40px; padding: 0 12px; border: 1px solid var(--rule-strong); background: transparent; cursor: pointer; font-family: var(--mono); font-size: .7rem; letter-spacing: .14em; color: var(--ink); }
.nav-toggle span, .nav-toggle span::before { display: block; width: 18px; height: 1.5px; background: var(--ink); position: relative; transition: transform .3s var(--ease-out); }
.nav-toggle span::before { content: ""; position: absolute; left: 0; top: 6px; }
.nav-toggle span { transform: translateY(-3px); }
.nav-toggle[aria-expanded="true"] span { transform: translateY(0) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(-90deg); }

.site-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--rule-strong); }
.site-nav.is-open { display: block; animation: drop .4s var(--ease-out); }
@keyframes drop { from { opacity: 0; transform: translateY(-8px); } }
.site-nav ul { list-style: none; margin: 0; padding: 8px var(--gutter) 24px; counter-reset: nav; }
.site-nav li { counter-increment: nav; }
.site-nav a { display: flex; align-items: baseline; gap: 14px; padding: 14px 0; color: var(--ink); text-decoration: none; font-weight: 600; border-bottom: 1px solid var(--rule); }
.site-nav li:not(:last-child) a::before { content: counter(nav, decimal-leading-zero); font-family: var(--mono); font-size: .7rem; font-weight: 400; color: var(--sea); }
.site-nav a[aria-current="page"] { color: var(--sea); }
.site-nav .btn { margin-top: 18px; justify-content: center; color: var(--paper); }
.site-nav .btn, .site-nav .btn[aria-current="page"] { align-items: center; color: var(--paper); }

@media (min-width: 960px) {
  .nav-toggle { display: none; }
  .site-nav { display: block; position: static; background: none; border: 0; }
  .site-nav.is-open { animation: none; }
  .site-nav ul { display: flex; align-items: center; gap: 4px; padding: 0; }
  .site-nav a { border: 0; padding: 8px 14px; font-size: .92rem; font-weight: 500; position: relative; }
  .site-nav li:not(:last-child) a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 1px; background: var(--sea); transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease-out); }
  .site-nav li:not(:last-child) a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
  .site-nav a:hover { color: var(--sea); }
  .site-nav .btn { margin: 0 0 0 16px; padding: 10px 20px; }
}

/* ---------- ボタン ---------- */
.btn { position: relative; overflow: hidden; isolation: isolate; display: inline-flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 52px; padding: 14px 24px; border: 1px solid var(--ink); background: transparent; color: var(--ink); font: 600 .98rem/1.3 var(--gothic); letter-spacing: .06em; text-decoration: none; cursor: pointer; transition: color .4s var(--ease-out), border-color .4s; }
.btn::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--ocean); transform: scaleX(0); transform-origin: right; transition: transform .5s var(--ease-out); }
.btn:hover::before { transform: scaleX(1); transform-origin: left; }
.btn::after { content: "→"; font-family: var(--mono); transition: transform .4s var(--ease-out); }
.btn:hover::after { transform: translateX(5px); }
.btn:hover { color: var(--white); border-color: var(--ocean); }
.btn--primary, .btn--ocean { background: var(--ink); color: var(--paper); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--signal { background: var(--signal-deep); border-color: var(--signal-deep); color: var(--white); }
.btn--signal::before { background: var(--ink); }
.section--dark .btn--primary, .cta-band .btn--primary { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.section--dark .btn--primary::before, .cta-band .btn--primary::before { background: var(--tide); }
.section--dark .btn--primary:hover, .cta-band .btn--primary:hover { color: var(--ink); border-color: var(--tide); }
.section--dark .btn--ghost, .cta-band .btn--ghost { color: var(--paper); border-color: rgba(244, 242, 236, .5); }
.section--dark .btn--ghost::before, .cta-band .btn--ghost::before { background: var(--paper); }
.section--dark .btn--ghost:hover, .cta-band .btn--ghost:hover { color: var(--ink); }
.site-nav .btn::after { content: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- ヒーロー ---------- */
.hero { position: relative; overflow: clip; background: var(--paper); border-bottom: 1px solid var(--rule-strong); padding: 56px 0 64px; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(var(--rule) 1px, transparent 1px), linear-gradient(90deg, var(--rule) 1px, transparent 1px); background-size: 120px 120px; opacity: .45; -webkit-mask-image: linear-gradient(90deg, transparent, #000 55%); mask-image: linear-gradient(90deg, transparent, #000 55%); }
.hero::after { content: ""; position: absolute; top: -15%; bottom: -15%; right: -320px; width: 1400px; pointer-events: none; background: url("/img/contours.svg?v=a4bc7b4a57") center / contain no-repeat; animation: drift 50s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translate3d(0, 0, 0) rotate(0deg) scale(1); } to { transform: translate3d(-60px, 24px, 0) rotate(-3deg) scale(1.06); } }
.hero > .container { position: relative; z-index: 1; }
.hero h1 { color: var(--ink); }
.hero .lead { max-width: 640px; color: var(--muted); }
.hero--sub { padding: 40px 0 48px; }
.hero--sub h1 { font-size: clamp(1.8rem, 1.2rem + 2.6vw, 3.2rem); }
@media (min-width: 960px) { .hero { padding: 96px 0 104px; } .hero--sub { padding: 64px 0 72px; } }

/* トップ専用ヒーロー：見出し＋セキュリティ公報ボード */
.hero-grid { display: grid; gap: 40px; align-items: end; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 64px; } }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 24px; font-family: var(--mono); font-size: .72rem; letter-spacing: .16em; color: var(--muted); text-transform: uppercase; margin-bottom: 28px; }
.hero-meta span::before { content: "■ "; color: var(--sea); }
.hero h1 .em { color: var(--sea); }

/* タイプライター：<span class="typed" data-words='["守る。","速くする。"]'>守る。</span> */
.typed { color: var(--sea); white-space: nowrap; }
.typed::after { content: ""; display: inline-block; width: 3px; height: .9em; margin-left: 4px; vertical-align: -.05em; background: var(--signal); animation: caret 1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }

/* 公報ボード：<div class="board" data-typing> … <dl><div><dt/><dd/></div>…</dl> */
.board { background: var(--ink); color: #c9dde3; font-family: var(--mono); font-size: .8rem; border: 1px solid var(--ink); box-shadow: 8px 8px 0 -1px var(--paper-2), 8px 8px 0 0 var(--rule-strong); margin-right: 8px; }
@media (min-width: 960px) { .board { margin-right: 0; box-shadow: 16px 16px 0 -1px var(--paper-2), 16px 16px 0 0 var(--rule-strong); } }
.board__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--rule-dark); letter-spacing: .14em; text-transform: uppercase; font-size: .7rem; }
.board__head > :last-child { white-space: nowrap; }
.board__head .live { display: inline-flex; align-items: center; gap: 8px; color: var(--signal); white-space: nowrap; }
.board dl { margin: 0; padding: 6px 18px; }
.board dl div { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--rule-dark); }
.board dl div:last-child { border-bottom: 0; }
.board dt { color: var(--tide); letter-spacing: .08em; }
.board dd { margin: 0; color: var(--white); }
.board dd a { color: var(--tide); }
.board__foot { display: flex; justify-content: space-between; gap: 12px; padding: 14px 18px; background: var(--signal-deep); color: var(--white); text-decoration: none; font-weight: 700; letter-spacing: .06em; transition: background .3s, color .3s; }
.board__foot:hover { background: var(--white); color: var(--ink); }
.board__src { padding: 10px 18px 14px; font-size: .68rem; color: #8aa6b0; border-top: 1px solid var(--rule-dark); }
.board__src a { color: #a9c3cc; }
.js .board[data-typing] dl div { opacity: 0; transform: translateX(-8px); transition: opacity .5s, transform .5s var(--ease-out); }
.js .board[data-typing] dl div.is-in { opacity: 1; transform: none; }

.badge { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; border: 1px solid currentColor; color: var(--sea); text-transform: uppercase; }
.badge--alert { color: var(--white); background: var(--signal-deep); border-color: var(--signal-deep); }

/* 告知ボックス */
.alert { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding: 14px 18px; border: 1px solid var(--rule-strong); border-left: 4px solid var(--signal-deep); background: var(--white); color: var(--ink); }
.alert a { color: var(--ink); font-weight: 700; }
.alert--light { background: var(--white); }

/* ---------- カード（罫線のみ・影なし） ---------- */
.card { position: relative; background: transparent; border-top: 1px solid var(--rule-strong); padding: 24px 0 8px; height: 100%; }
.card::before { content: ""; position: absolute; left: 0; top: -1px; height: 2px; width: 100%; background: var(--sea); transform: scaleX(0); transform-origin: left; transition: transform .6s var(--ease-out); }
.card:hover::before { transform: scaleX(1); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.card__icon { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--rule-strong); color: var(--sea); margin-bottom: 16px; }
.card__icon svg { width: 22px; height: 22px; }
.card--link { text-decoration: none; color: inherit; display: block; }
.card--link:hover { color: inherit; }
.card--link:hover h3 { color: var(--sea); }
.section--dark .card { border-top-color: var(--rule-dark); color: #c9dde3; }
.section--dark .card::before { background: var(--tide); }
.section--dark .card__icon { border-color: var(--rule-dark); color: var(--tide); }

/* 番号付きインデックス（サービス一覧など）
   <ol class="index-list"><li><a href><h3/><p/><span class="tags"><span>PHP</span></span></a></li></ol> */
.index-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); counter-reset: idx; }
.index-list > li { counter-increment: idx; border-bottom: 1px solid var(--rule); }
.index-list a, .index-list .row { display: grid; grid-template-columns: 44px minmax(0, 1fr) 24px; gap: 4px 16px; padding: 24px 0; color: inherit; text-decoration: none; position: relative; background: linear-gradient(90deg, var(--foam), transparent 85%) no-repeat left / 0 100%; transition: background-size .6s var(--ease-out); }
.index-list a::before, .index-list .row::before { content: counter(idx, decimal-leading-zero); font-family: var(--mono); font-size: .8rem; color: var(--sea); padding-top: .35em; }
.index-list a::after { content: "→"; font-family: var(--mono); grid-column: 3; grid-row: 1; align-self: start; padding-top: .2em; color: var(--muted); transition: transform .4s var(--ease-out), color .3s; }
.index-list h3 { grid-column: 2; margin: 0; font-size: clamp(1.15rem, 1rem + .6vw, 1.5rem); transition: color .3s, transform .5s var(--ease-out); }
.index-list p { grid-column: 2; margin: 0; color: var(--muted); font-size: .95rem; }
.index-list .tags { grid-column: 2; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.index-list .tags span { font-family: var(--mono); font-size: .68rem; letter-spacing: .06em; color: var(--muted); border: 1px solid var(--rule); padding: 1px 8px; }
.index-list a:hover { background-size: 100% 100%; }
.index-list a:hover h3 { color: var(--sea); transform: translateX(6px); }
.index-list a:hover::after { transform: translateX(6px); color: var(--sea); }
.index-list .is-urgent::before { color: var(--signal-deep); }
.index-list .is-urgent h3::after { content: "緊急対応"; margin-left: 12px; font: 700 .65rem/1 var(--mono); letter-spacing: .12em; color: var(--white); background: var(--signal-deep); padding: 4px 8px; vertical-align: middle; }
@media (min-width: 960px) {
  .index-list a, .index-list .row { grid-template-columns: 64px minmax(240px, 1fr) minmax(0, 1.2fr) 32px; align-items: baseline; padding: 30px 8px; }
  .index-list h3, .index-list p { grid-row: 1; }
  .index-list p { grid-column: 3; }
  .index-list a::after { grid-column: 4; }
  .index-list .tags { grid-column: 3; grid-row: 2; }
}

/* 強み：大きな番号の段組  <ol class="pillars"><li><span class="n">01</span><h3/><p/></li></ol> */
.pillars { list-style: none; margin: 0; padding: 0; display: grid; border-top: 1px solid var(--rule-strong); }
.pillars li { padding: 28px 0; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 0 16px; }
.pillars .n { font-family: var(--mincho); font-size: 2.6rem; line-height: 1; color: transparent; -webkit-text-stroke: 1px var(--sea); grid-row: span 2; transition: color .5s; }
.pillars li:hover .n { color: var(--sea); }
.pillars h3 { margin-bottom: .3em; }
.pillars p { margin: 0; color: var(--muted); font-size: .95rem; }
@media (min-width: 960px) {
  .pillars { grid-template-columns: repeat(5, minmax(0, 1fr)); border-bottom: 1px solid var(--rule-strong); }
  .pillars li { display: block; padding: 28px 24px 32px; border-bottom: 0; border-left: 1px solid var(--rule); }
  .pillars li:first-child { border-left: 0; padding-left: 0; }
  .pillars .n { font-size: 3.4rem; margin-bottom: 28px; }
}
.section--dark .pillars, .section--dark .pillars li { border-color: var(--rule-dark); }
.section--dark .pillars .n { -webkit-text-stroke-color: var(--tide); }
.section--dark .pillars li:hover .n { color: var(--tide); }
.section--dark .pillars p { color: #a9c3cc; }

/* 経歴の社名列 */
.lineage { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 32px; padding: 20px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); font-family: var(--mono); font-size: .8rem; letter-spacing: .14em; color: var(--muted); }
.lineage strong { font-family: var(--gothic); font-size: 1.15rem; letter-spacing: .04em; color: var(--ink); font-weight: 700; }
.section--dark .lineage { border-color: var(--rule-dark); color: #8aa6b0; }
.section--dark .lineage strong { color: var(--white); }

/* 技術スタックの流れるティッカー  <div class="ticker"><div class="ticker__track"><span>PHP 8.x</span>…</div></div>
   （JS がトラックを複製して無限ループ。JS 無効時は折り返し表示） */
.ticker { overflow: hidden; border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); padding: 18px 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.ticker__track { display: flex; flex-wrap: wrap; gap: 12px 40px; font-family: var(--mono); font-size: .95rem; letter-spacing: .06em; color: var(--muted); }
.ticker__track span::before { content: "◇ "; color: var(--sea); }
.js .ticker__track { flex-wrap: nowrap; width: max-content; animation: ticker var(--ticker-dur, 40s) linear infinite; }
.ticker:hover .ticker__track { animation-play-state: paused; }
@keyframes ticker { to { transform: translateX(-50%); } }
.section--dark .ticker { border-color: var(--rule-dark); }
.section--dark .ticker__track { color: #a9c3cc; }

.stat { padding: 20px 0; border-top: 1px solid var(--rule-strong); }
.stat__value { font-family: var(--mincho); font-size: clamp(1.8rem, 1.3rem + 2vw, 2.8rem); line-height: 1.2; color: var(--ink); }
.section--dark .stat__value { color: var(--white); }
.stat__label { font-family: var(--mono); font-size: .75rem; letter-spacing: .1em; color: var(--muted); }

.checklist { list-style: none; padding: 0; margin: 0 0 1em; }
.checklist li { position: relative; padding: 10px 0 10px 32px; border-bottom: 1px dashed var(--rule); }
.checklist li::before { content: ""; position: absolute; left: 2px; top: 1.15em; width: 14px; height: 14px; border: 1px solid var(--sea); background: linear-gradient(var(--sea), var(--sea)) center / 6px 6px no-repeat; }

/* ---------- 航路図風ステップ ---------- */
.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; display: grid; position: relative; }
.steps li { counter-increment: step; position: relative; padding: 0 0 32px 48px; }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0; width: 32px; height: 32px; display: grid; place-items: center; font-family: var(--mono); font-size: .72rem; background: var(--paper); border: 1px solid var(--ink); z-index: 1; transition: background .4s, color .4s; }
.steps li:hover::before { background: var(--ink); color: var(--paper); }
.steps li::after { content: ""; position: absolute; left: 16px; top: 32px; bottom: 0; border-left: 1px dashed var(--rule-strong); }
.steps li:last-child::after { display: none; }
.steps h3 { font-size: 1.08rem; margin-bottom: .3em; padding-top: 2px; }
.steps p { color: var(--muted); font-size: .94rem; }
@media (min-width: 960px) {
  .steps:not(.steps--vertical) { grid-template-columns: repeat(var(--steps, 4), minmax(0, 1fr)); gap: 0 28px; }
  .steps:not(.steps--vertical) li { padding: 52px 0 0; }
  .steps:not(.steps--vertical) li::after { left: 32px; right: -28px; top: 16px; bottom: auto; border-left: 0; border-top: 1px dashed var(--rule-strong); }
}
.section--alt .steps li::before { background: var(--paper-2); }
.section--alt .steps li:hover::before { background: var(--ink); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--rule-strong); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; padding: 24px 48px 24px 44px; font-family: var(--mincho); font-weight: 600; font-size: 1.06rem; list-style: none; position: relative; color: var(--ink); transition: color .3s; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; position: absolute; left: 4px; top: 24px; font-family: var(--mono); font-size: .85rem; color: var(--sea); }
.faq summary::after { content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); font-family: var(--mono); font-size: 1.3rem; color: var(--sea); transition: transform .4s var(--ease-out); }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq summary:hover { color: var(--sea); }
.faq details > div { padding: 0 48px 24px 44px; color: var(--muted); position: relative; }
.faq details[open] > div { animation: drop .5s var(--ease-out); }
.faq details > div::before { content: "A"; position: absolute; left: 4px; top: 0; font-family: var(--mono); font-size: .85rem; color: var(--signal); }

/* ---------- お知らせ ---------- */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.news li { border-bottom: 1px solid var(--rule); }
.news a, .news .row { display: grid; grid-template-columns: 1fr; gap: 4px 20px; padding: 18px 0; color: inherit; text-decoration: none; }
.news time { font-family: var(--mono); font-size: .8rem; color: var(--muted); letter-spacing: .06em; }
.news .cat { font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; color: var(--sea); border: 1px solid currentColor; padding: 0 8px; justify-self: start; }
.news .cat--alert { color: var(--signal-deep); }
.news a:hover .ttl { color: var(--sea); text-decoration: underline; }
@media (min-width: 640px) { .news a, .news .row { grid-template-columns: 112px max-content minmax(0, 1fr); align-items: baseline; } }

/* ---------- CTA ---------- */
.cta-band { position: relative; overflow: clip; background: var(--ink); color: #c9dde3; padding: 48px 24px; }
.cta-band::before { content: ""; position: absolute; inset: -20%; background: url("/img/contours-dark.svg?v=358f916006") right center / 900px auto no-repeat; animation: drift 40s ease-in-out infinite alternate; pointer-events: none; }
.cta-band > * { position: relative; }
.cta-band h2 { color: var(--white); font-size: clamp(1.6rem, 1.1rem + 2vw, 2.6rem); }
.cta-band p { color: #a9c3cc; }
@media (min-width: 960px) { .cta-band { padding: 72px 64px; } }

/* メールだけで送れるクイック相談（main.js が送信を処理。JS 無効時は通常 POST） */
.quick { display: grid; gap: 12px; max-width: 640px; margin-top: 28px; }
.quick label { font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; color: var(--tide); text-transform: uppercase; }
.quick__row { display: flex; flex-wrap: wrap; border: 1px solid rgba(244, 242, 236, .5); transition: border-color .3s; }
.quick__row:focus-within { border-color: var(--tide); }
.quick input[type="email"] { flex: 1 1 220px; min-width: 0; min-height: 56px; padding: 12px 16px; border: 0; background: transparent; color: var(--white); font: 16px var(--gothic); }
.quick input[type="email"]::placeholder { color: #7f98a3; }
.quick input[type="email"]:focus { outline: none; }
.quick .btn { min-height: 56px; border: 0; flex: 1 0 auto; }
@media (min-width: 640px) { .quick .btn { flex: 0 0 auto; } }
.quick__note { font-size: .82rem; color: #8aa6b0; margin: 0; }
.quick__msg { font-size: .9rem; margin: 0; min-height: 1.5em; }
.quick__msg.is-ok { color: var(--tide); }
.quick__msg.is-err { color: #ffb4a2; }

/* ---------- パンくず ---------- */
.breadcrumb ol { list-style: none; padding: 0; margin: 0 0 24px; display: flex; flex-wrap: wrap; gap: 4px; font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; color: var(--muted); }
.breadcrumb li + li::before { content: "/"; margin: 0 8px; opacity: .6; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--sea); }

/* ---------- 本文（記事・ポリシー） ---------- */
.prose { max-width: 760px; font-size: 1.02rem; }
.prose h2 { margin-top: 2.2em; padding-top: .8em; border-top: 1px solid var(--rule-strong); font-size: clamp(1.35rem, 1.1rem + 1vw, 1.8rem); }
.prose h3 { margin-top: 1.8em; }
.prose blockquote { margin: 1.6em 0; padding: 4px 0 4px 20px; border-left: 2px solid var(--sea); color: var(--muted); }
.prose code { font-family: var(--mono); background: var(--paper-2); padding: 1px 6px; font-size: .88em; }
.prose ul li, .prose ol li { margin-bottom: .4em; }
.note { font-size: .84rem; color: var(--muted); }

/* 読了プログレス（記事ページ：<div class="progress" aria-hidden="true"></div> を body 直下に） */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 60; background: var(--signal); transform: scaleX(var(--p, 0)); transform-origin: left; }

/* ---------- テーブル ---------- */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; border-top: 1px solid var(--rule-strong); }
.table th, .table td { padding: 16px 12px 16px 0; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.table th { font-family: var(--mono); font-size: .78rem; letter-spacing: .08em; font-weight: 400; color: var(--muted); white-space: nowrap; width: 28%; }

/* ---------- フォーム ---------- */
.form { display: grid; gap: 28px; max-width: 760px; }
.field label, .field legend { display: flex; align-items: center; gap: 10px; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
.field .req, .field .opt { font-family: var(--mono); font-size: .64rem; letter-spacing: .12em; padding: 1px 7px; font-weight: 400; }
.field .req { background: var(--signal-deep); color: var(--white); }
.field .opt { border: 1px solid var(--rule-strong); color: var(--muted); }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field select, .field textarea {
  width: 100%; min-height: 52px; padding: 12px 14px; font: inherit; font-size: 16px; color: var(--ink);
  border: 1px solid var(--rule-strong); border-radius: 0; background: var(--white); -webkit-appearance: none; appearance: none; transition: border-color .3s, box-shadow .3s;
}
.field select { background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%230a1f33' stroke-width='1.5'/%3E%3C/svg%3E") right 14px center / 12px no-repeat; padding-right: 40px; }
.field textarea { min-height: 200px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--sea); box-shadow: inset 0 0 0 1px var(--sea), 6px 6px 0 -1px var(--foam); }
.field fieldset { border: 0; padding: 0; margin: 0; }
.field .choice { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; font-weight: 400; border-bottom: 1px dashed var(--rule); }
.field .choice input { margin-top: .45em; width: 18px; height: 18px; accent-color: var(--ink); }
.field .hint { font-size: .84rem; color: var(--muted); margin-top: 6px; }
.field .error { color: var(--danger); font-size: .9rem; margin-top: 6px; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); box-shadow: inset 0 0 0 1px var(--danger); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { padding: 14px 18px; border-left: 4px solid currentColor; }
.form-status--error { background: #fbeceb; color: var(--danger); }

/* ---------- フッター ---------- */
.site-footer { position: relative; overflow: hidden; background: var(--ink); color: #a9c3cc; padding: 72px 0 28px; font-size: .9rem; }
.site-footer a { color: #dfeaee; text-decoration: none; }
.site-footer a:hover { color: var(--tide); }
.footer-grid { display: grid; gap: 40px; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr; } }
.site-footer h2 { font-family: var(--mono); font-size: .72rem; font-weight: 400; color: var(--tide); letter-spacing: .2em; text-transform: uppercase; margin-bottom: 16px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 10px; }
.site-footer .brand { color: var(--white); margin-bottom: 16px; }
.site-footer .brand__name small { color: #8aa6b0; }
.footer-word { font-family: var(--mincho); font-size: clamp(3rem, 1rem + 9vw, 9rem); line-height: 1; letter-spacing: .08em; color: transparent; -webkit-text-stroke: 1px rgba(127, 196, 201, .28); margin: 56px 0 0; white-space: nowrap; user-select: none; }
.copyright { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; border-top: 1px solid var(--rule-dark); margin-top: 24px; padding-top: 20px; font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; color: #8aa6b0; }

/* トップへ戻る（main.js が挿入） */
.to-top { position: fixed; right: 16px; bottom: 16px; z-index: 40; width: 48px; height: 48px; display: grid; place-items: center; background: var(--ink); color: var(--paper); border: 0; font-family: var(--mono); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity .4s, transform .4s var(--ease-out), background .3s; }
.to-top.is-shown { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--signal); }

/* ---------- 補助 ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-lg { margin-top: 48px; }
.mb-0 { margin-bottom: 0; }

/* ---------- スクロール表示（data-anim） ----------
   data-anim="up|down|left|right|zoom|line|mask" data-delay="200"(ms)
   data-stagger="80" を親に付けると子要素 [data-anim] に順番に遅延を付与
   JS 有効時のみ隠す（JS 無効・クローラーでは常に表示）。旧 .reveal も同じ動き */
.js [data-anim], .js .reveal { opacity: 0; transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out), clip-path 1.2s var(--ease-out); will-change: opacity, transform; }
.js [data-anim="up"], .js .reveal { transform: translate3d(0, 40px, 0); }
.js [data-anim="down"] { transform: translate3d(0, -40px, 0); }
.js [data-anim="left"] { transform: translate3d(48px, 0, 0); }
.js [data-anim="right"] { transform: translate3d(-48px, 0, 0); }
.js [data-anim="zoom"] { transform: scale(.94); }
.js [data-anim="line"] { opacity: 1; transform: scaleX(0); transform-origin: left; }
.js [data-anim="mask"] { opacity: 1; clip-path: inset(0 100% 0 0); }
.js [data-anim].is-in, .js .reveal.is-in, .js .reveal.is-visible { opacity: 1; transform: none; clip-path: inset(0 0 0 0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-anim], .js .reveal, .js .board[data-typing] dl div { opacity: 1 !important; transform: none !important; clip-path: none !important; transition: none !important; }
  .hero::after, .section--dark::before, .cta-band::before, .pulse, .typed::after { animation: none; }
  .js .ticker__track { animation: none; flex-wrap: wrap; width: auto; }
  .btn::before, .btn::after, .index-list a, .index-list a::after, .card::before { transition: none; }
}
.footer-addr { font-size: .78rem; letter-spacing: .04em; color: #8aa6b0; }

/* 狭い画面：長いブランド名とメニューボタンを折り返さない */
.nav-toggle { flex: none; white-space: nowrap; }
.brand { min-width: 0; }
@media (max-width: 639px) { .site-header .brand__name { font-size: .92rem; letter-spacing: .04em; white-space: nowrap; } .site-header .brand__name small { letter-spacing: .1em; } }

/* JS 無効時のフォームエラー（/contact/?error=1#form-status） */
.nojs-error { display: none; }
.nojs-error:target { display: block; }
.js .nojs-error { display: none !important; }