/* ==========================================================================
   VEXS コーポレートサイト スタイル
   - 色・書体・幅は最初の :root にまとめています。色を変えるときはここだけ直してください。
   - セクションごとに見出しコメントで区切っています。
   ========================================================================== */

:root {
  /* 色（ロゴのネイビーを基準） */
  --bg: #FFFFFF;        /* 背景 */
  --tint: #EFF5FC;      /* 淡い青の帯 */
  --ink: #1B2A3D;       /* 本文・見出し */
  --ink-2: #5A6A7D;     /* 補足テキスト */
  --line: #E2E9F2;      /* 罫線 */
  --navy: #0F3F6F;      /* ロゴ・ボタン */
  --accent: #2F6AA3;    /* リンク・小見出し */
  --sky: #BCD4EE;       /* 装飾（濃） */
  --sky-2: #DCE8F6;     /* 装飾（淡） */
  --sun: #F4C64B;       /* 差し色（黄色）※使いすぎない */
  --danger: #B42318;    /* エラー表示 */
  --card: #FFFFFF;
  --on-navy: #FFFFFF;
  --shadow: 0 1px 2px rgba(15, 63, 111, .06), 0 8px 24px rgba(15, 63, 111, .06);

  /* 書体 */
  --f-display: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Yu Gothic", sans-serif;
  --f-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;

  /* レイアウト */
  --wrap: 1120px;
  --gutter: max(20px, env(safe-area-inset-left, 0px));

  color-scheme: light;
}

/* ---------- 基本 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.95;
  letter-spacing: .03em;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; }
/* 日本語の見出しを文節で改行する（対応ブラウザのみ。非対応でも表示は崩れない） */
h1, h2, h3 { word-break: auto-phrase; }
.nowrap { white-space: nowrap; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.skip-link { position: absolute; left: 12px; top: -48px; z-index: 100; background: var(--navy); color: var(--on-navy); padding: 8px 16px; border-radius: 8px; text-decoration: none; }
.skip-link:focus { top: 12px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.band { padding-left: var(--gutter); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.wrap { max-width: var(--wrap); margin-inline: auto; }

.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--f-display); font-weight: 700; font-size: 13px; letter-spacing: .14em; color: var(--accent); }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--sun); }
h2 { font-family: var(--f-display); font-weight: 700; font-size: clamp(26px, 3.2vw, 36px); line-height: 1.5; letter-spacing: .05em; margin: 12px 0 0; text-wrap: balance; }

/* ---------- ヘッダー ---------- */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, .9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); padding-top: env(safe-area-inset-top, 0px); }
.hd { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 72px; }
.logo { display: flex; align-items: center; text-decoration: none; }
.logo-svg { display: block; height: 32px; width: auto; color: var(--navy); }
.gnav ul { display: flex; gap: 30px; list-style: none; margin: 0; padding: 0; align-items: center; }
.gnav a { text-decoration: none; font-size: 14px; font-weight: 500; color: var(--ink-2); }
.gnav a:hover, .gnav a[aria-current="page"] { color: var(--accent); }
.gnav .nav-cta { color: var(--on-navy); background: var(--navy); padding: 9px 20px; border-radius: 999px; }
.gnav .nav-cta:hover, .gnav .nav-cta[aria-current="page"] { color: var(--on-navy); background: var(--accent); }
.menu { display: none; }

/* ---------- ボタン ---------- */
.btn { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: inherit; font-weight: 700; font-size: 15px; padding: 15px 28px; border-radius: 999px; border: 0; cursor: pointer; transition: background .2s, transform .2s, color .2s; }
.btn-primary { background: var(--navy); color: var(--on-navy); }
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); }
.btn-ghost { color: var(--navy); background: var(--sky-2); }
.btn-ghost:hover { background: var(--sky); }
.btn-light { background: var(--on-navy); color: var(--navy); }
.btn-light:hover { background: var(--sun); transform: translateY(-1px); }
.arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }
.text-link { color: var(--accent); text-underline-offset: 4px; }

/* ---------- トップ：ファーストビュー ---------- */
.hero { padding-block: clamp(40px, 7vw, 96px) clamp(56px, 8vw, 104px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(24px, 5vw, 64px); align-items: center; }
.hero h1 { font-family: var(--f-display); font-weight: 700; font-size: clamp(32px, 4.8vw, 56px); line-height: 1.45; letter-spacing: .04em; margin: 18px 0 24px; text-wrap: balance; }
.hero h1 em { font-style: normal; color: var(--accent); background: linear-gradient(transparent 70%, rgba(244, 198, 75, .55) 70%); }
.hero .lead { color: var(--ink-2); max-width: 32em; margin: 0 0 34px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-art { position: relative; max-width: 460px; width: 100%; justify-self: center; }
.hero-art svg { display: block; width: 100%; height: auto; }
.facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.facts span { font-size: 13px; color: var(--ink-2); background: var(--tint); padding: 6px 14px; border-radius: 999px; }
.facts b { color: var(--ink); font-weight: 500; }

@media (prefers-reduced-motion: no-preference) {
  /* 3枚が同じタイミングで動き、上ほど大きく浮く → 2つの間隔は常に同じだけ広がる */
  .layer { animation: 6s ease-in-out infinite; }
  .layer.l1 { animation-name: float1; }
  .layer.l2 { animation-name: float2; }
  .layer.l3 { animation-name: float3; }
  @keyframes float1 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
  @keyframes float2 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
  @keyframes float3 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-2px); } }
  .rise { animation: rise .8s cubic-bezier(.2, .7, .2, 1) both; }
  .rise.d1 { animation-delay: .08s; } .rise.d2 { animation-delay: .16s; } .rise.d3 { animation-delay: .24s; }
  @keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
}

/* ---------- 下層ページの見出し ---------- */
.page-hero { background: var(--tint); padding-block: clamp(48px, 7vw, 88px); position: relative; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; right: -80px; top: -80px; width: 260px; height: 260px; border-radius: 50%; border: 2px dashed var(--sky); }
.page-hero h1 { font-family: var(--f-display); font-weight: 700; font-size: clamp(30px, 4vw, 44px); line-height: 1.4; letter-spacing: .05em; margin: 12px 0 0; }
.page-hero p { color: var(--ink-2); max-width: 40em; margin: 16px 0 0; }
.breadcrumb { font-size: 13px; color: var(--ink-2); margin: 0 0 20px; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--sky); }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- セクション共通 ---------- */
.sec { padding-block: clamp(72px, 9vw, 112px); }
.sec.tint { background: var(--tint); }
.sec:not(.tint) + .cta-sec { padding-top: 0; } /* 白い帯の直後は余白を詰める */
.sec-head { max-width: 40em; margin-bottom: clamp(36px, 5vw, 56px); }
.sec-head p { color: var(--ink-2); margin: 16px 0 0; }
.sec-foot { margin-top: 36px; }

.cards { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 20px; }
.cards.even { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { background: var(--card); border-radius: 20px; padding: clamp(26px, 3.5vw, 40px); box-shadow: var(--shadow); }
.card h3 { font-family: var(--f-display); font-weight: 700; font-size: 22px; margin: 14px 0 4px; letter-spacing: .04em; }
.card .en { font-size: 13px; color: var(--ink-2); letter-spacing: .06em; }
.card p { color: var(--ink-2); margin: 16px 0 0; }
.tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--navy); background: var(--sun); padding: 3px 12px; border-radius: 999px; }
.icon { width: 48px; height: 48px; border-radius: 14px; background: var(--sky-2); display: grid; place-items: center; color: var(--navy); }
.icon svg { width: 24px; height: 24px; }
.more { display: inline-flex; gap: 8px; margin-top: 22px; font-size: 14px; font-weight: 700; color: var(--accent); text-decoration: none; }
.more:hover .arrow { transform: translateX(3px); }

/* ご相談のときにお聞きすること */
.ask { margin-top: 20px; display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 24px 40px; align-items: start; }
.ask h3 { font-family: var(--f-display); font-weight: 700; font-size: 20px; margin: 0; letter-spacing: .04em; }
.ask .note { color: var(--ink-2); font-size: 14px; margin: 10px 0 0; }
.ask ul { list-style: none; margin: 0; padding: 0; }
.ask li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 4px 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.ask li:last-child { border-bottom: 0; }
.ask li svg { width: 22px; height: 22px; color: var(--accent); margin-top: 4px; }
.ask li b { font-weight: 700; }
.ask li span { grid-column: 2; color: var(--ink-2); font-size: 14px; line-height: 1.8; }

/* 流れ（ステップ） */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; position: relative; }
.flow::before { content: ""; position: absolute; left: 10%; right: 10%; top: 27px; height: 2px; background: repeating-linear-gradient(to right, var(--sky) 0 8px, transparent 8px 14px); }
.flow li { position: relative; text-align: center; padding-inline: 4px; }
.flow .n { position: relative; width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 50%; display: grid; place-items: center; font-family: var(--f-display); font-weight: 700; font-size: 18px; color: var(--navy); background: var(--bg); border: 2px solid var(--sky); }
.flow li:first-child .n { background: var(--navy); color: var(--on-navy); border-color: var(--navy); }
.flow h3 { font-family: var(--f-display); font-weight: 700; font-size: 17px; margin: 0 0 6px; }
.flow p { font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.8; }
.tint .flow .n { background: var(--tint); }
.tint .flow li:first-child .n { background: var(--navy); }

/* 大切にしていること */
.points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.points .card h3 { font-size: 19px; line-height: 1.6; margin-top: 18px; text-wrap: balance; }
.points .card p { font-size: 15px; }

/* VEXSにできること */
.strengths { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.strengths .card h3 { font-size: 18px; line-height: 1.6; margin-top: 18px; text-wrap: balance; }
.strengths .card p { font-size: 15px; }
.sec:not(.tint) .strengths .card { background: var(--tint); box-shadow: none; }
.sec:not(.tint) .strengths .icon { background: var(--card); }

/* 社名に込めた思い */
.name-card { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 28px 56px; align-items: center; margin-bottom: 20px; }
.name-mark { font-family: var(--f-display); font-weight: 700; font-size: clamp(56px, 9vw, 104px); line-height: 1; letter-spacing: .04em; color: var(--navy); display: flex; align-items: center; gap: .18em; justify-content: center; isolation: isolate; }
.name-mark i { font-style: normal; font-size: .45em; color: var(--sky); }
.name-mark b { color: var(--accent); position: relative; }
.name-mark b::after { content: ""; position: absolute; left: -.06em; right: -.06em; bottom: .02em; height: .22em; background: rgba(244, 198, 75, .55); z-index: -1; border-radius: 4px; }
.name-body h3 { margin-top: 0; }
.name-body p { margin: 12px 0 0; }
.s-words { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 8px; }
.s-words li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; padding: 10px 16px; background: var(--tint); border-radius: 12px; }
.s-words .w { font-family: var(--f-display); font-weight: 700; color: var(--navy); min-width: 6.5em; letter-spacing: .04em; }
.s-words .w b { color: var(--accent); }
.s-words .d { font-size: 14px; color: var(--ink-2); }
.sec.tint .name-card .s-words li { background: var(--tint); }
.sec:not(.tint) .name-card { background: var(--tint); box-shadow: none; }
.sec:not(.tint) .name-card .s-words li { background: var(--card); }

/* 説明の段組（事業内容ページ） */
.split { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 24px 56px; align-items: start; }
.split .body p { margin: 0 0 1.2em; color: var(--ink-2); }
.split .body p:last-child { margin-bottom: 0; }
.defs { margin: 0; display: grid; gap: 14px; }
.defs div { background: var(--card); border-radius: 16px; padding: 20px 24px; box-shadow: var(--shadow); }
.defs dt { font-family: var(--f-display); font-weight: 700; font-size: 17px; color: var(--navy); }
.defs dd { margin: 6px 0 0; color: var(--ink-2); font-size: 15px; }

/* ---------- 会社概要 ---------- */
.company { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 24px 48px; align-items: start; }
.company dl { margin: 0; display: grid; grid-template-columns: 8em minmax(0, 1fr); }
.company dt, .company dd { margin: 0; padding: 18px 0; border-bottom: 1px solid var(--line); }
.company dt { font-weight: 700; font-size: 14px; color: var(--navy); }
.company dd { color: var(--ink-2); }
.company dl > :nth-last-child(-n+2) { border-bottom: 0; }

/* ---------- お問い合わせ（帯） ---------- */
.contact-card { background: var(--navy); color: var(--on-navy); border-radius: 28px; padding: clamp(36px, 6vw, 72px); display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 28px 48px; align-items: center; position: relative; overflow: hidden; }
.contact-card::after { content: ""; position: absolute; right: -60px; bottom: -60px; width: 220px; height: 220px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .18); pointer-events: none; }
.contact-card .eyebrow, .contact-card h2 { color: var(--on-navy); }
.contact-card p { margin: 16px 0 0; color: rgba(255, 255, 255, .82); }
.contact-card ul { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, .86); }
.contact-card li { display: flex; gap: 10px; align-items: center; }
.contact-card li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--sun); flex: none; }

/* ---------- フォーム ---------- */
.form-wrap { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 32px 56px; align-items: start; }
.form-side p { color: var(--ink-2); margin: 0 0 1em; font-size: 15px; }
.form-side ul { margin: 0; padding-left: 1.2em; color: var(--ink-2); font-size: 15px; }
.form { background: var(--card); border-radius: 24px; padding: clamp(24px, 4vw, 44px); box-shadow: var(--shadow); display: grid; gap: 24px; }
.field { display: grid; gap: 8px; }
.field label, .field legend { font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 8px; padding: 0; }
.req, .opt { font-size: 11px; font-weight: 700; padding: 1px 8px; border-radius: 999px; letter-spacing: .04em; }
.req { background: var(--navy); color: var(--on-navy); }
.opt { background: var(--sky-2); color: var(--navy); }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field select, .field textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--ink); background: var(--bg);
  border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px; line-height: 1.6;
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 200px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--sky-2); }
.field .hint { font-size: 13px; color: var(--ink-2); margin: 0; }
.field .error { font-size: 13px; color: var(--danger); margin: 0; }
.field [aria-invalid="true"] { border-color: var(--danger); }
.agree { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.agree input { width: 20px; height: 20px; margin-top: 5px; accent-color: var(--navy); flex: none; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-alert { border-radius: 12px; padding: 14px 18px; font-size: 15px; background: #FDECEA; color: var(--danger); }
.form-alert ul { margin: 6px 0 0; padding-left: 1.2em; }
.form .btn { justify-self: start; }

/* ---------- 本文（プライバシーポリシーなど） ---------- */
.prose { max-width: 44em; }
.prose h2 { font-size: 21px; margin: 2.4em 0 .6em; padding-top: 1.4em; border-top: 1px solid var(--line); }
.prose h2:first-of-type { margin-top: 0; padding-top: 0; border-top: 0; }
.prose p, .prose li { color: var(--ink-2); }
.prose ol, .prose ul { padding-left: 1.4em; }
.prose li { margin: .3em 0; }
.prose .meta { font-size: 14px; color: var(--ink-2); margin-top: 3em; text-align: right; }
.prose address { font-style: normal; color: var(--ink-2); }

/* ---------- 完了・404 ---------- */
.notice { text-align: center; max-width: 36em; margin-inline: auto; }
.notice .icon { margin: 0 auto 20px; width: 64px; height: 64px; border-radius: 50%; }
.notice .icon svg { width: 30px; height: 30px; }
.notice p { color: var(--ink-2); }
.notice .actions { justify-content: center; margin-top: 28px; }

/* ---------- フッター ---------- */
.site-footer .ft { padding-block: 40px; display: flex; flex-wrap: wrap; gap: 20px 32px; justify-content: space-between; align-items: center; font-size: 13px; color: var(--ink-2); border-top: 1px solid var(--line); }
.site-footer .logo-svg { height: 26px; }
.site-footer ul { display: flex; flex-wrap: wrap; gap: 8px 22px; list-style: none; margin: 0; padding: 0; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

/* ---------- レスポンシブ ---------- */
@media (max-width: 900px) {
  .hero-grid, .cards, .cards.even, .ask, .company, .contact-card, .split, .form-wrap { grid-template-columns: minmax(0, 1fr); }
  .hero-art { max-width: 300px; order: -1; }
  .points { grid-template-columns: minmax(0, 1fr); }
  .strengths { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .name-card { grid-template-columns: minmax(0, 1fr); }
  .flow { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .flow::before { left: 27px; right: auto; top: 28px; bottom: 28px; width: 2px; height: auto; background: repeating-linear-gradient(to bottom, var(--sky) 0 8px, transparent 8px 14px); }
  .flow li { display: grid; grid-template-columns: 56px minmax(0, 1fr); column-gap: 18px; text-align: left; padding: 0 0 22px; }
  .flow .n { grid-row: span 2; margin: 0; }
  .flow h3 { padding-top: 12px; }
}
@media (max-width: 720px) {
  .hero h1 { font-size: min(8vw, 34px); } /* 「頼れるエンジニアを。」が1行に収まる大きさ */
  .gnav { display: none; }
  .menu { display: block; position: relative; }
  .menu summary { list-style: none; cursor: pointer; font-size: 13px; font-weight: 700; color: var(--navy); background: var(--sky-2); padding: 8px 16px; border-radius: 999px; }
  .menu summary::-webkit-details-marker { display: none; }
  .menu ul { position: absolute; right: 0; top: calc(100% + 10px); background: var(--card); box-shadow: var(--shadow); border-radius: 16px; list-style: none; margin: 0; padding: 8px 0; min-width: 220px; }
  .menu li a { display: block; padding: 11px 20px; text-decoration: none; font-size: 15px; }
  .menu li a[aria-current="page"] { color: var(--accent); font-weight: 700; }
  .strengths { grid-template-columns: minmax(0, 1fr); }
  .company dl { grid-template-columns: minmax(0, 1fr); }
  .company dt { padding-bottom: 0; border-bottom: 0; }
  .company dd { padding-top: 4px; }
  .hd { height: 64px; }
  .logo-svg { height: 28px; }
  .page-hero::after { width: 160px; height: 160px; right: -60px; top: -60px; }
}