/* =========================================================
   エイスワン合同会社 コーポレートサイト 共通スタイル
   ========================================================= */

:root {
  --navy-900: #0b1b33;
  --navy-800: #12294a;
  --navy-700: #1b3a63;
  --navy-100: #eef2f8;
  --graphite: #16191f;
  --accent: #2f6fd0;
  --accent-dark: #1f4f9b;
  --ink: #1c2430;
  --ink-sub: #5a6577;
  --line: #dfe4ec;
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --radius: 10px;
  --maxw: 1120px;
  --shadow: 0 2px 14px rgba(11, 27, 51, .07);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent-dark); }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--navy-900);
}

.brand-mark {
  height: 40px;
  width: auto;
  flex: 0 0 auto;
}

.brand-name {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .04em;
  line-height: 1.3;
}

.brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-sub);
  letter-spacing: .12em;
}

.gnav ul {
  display: flex;
  align-items: center;
  gap: 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.gnav a {
  text-decoration: none;
  color: var(--ink);
  font-size: 14.5px;
  font-weight: 600;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.gnav a:hover,
.gnav a[aria-current="page"] {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
}

.gnav .btn-nav {
  background: var(--navy-800);
  color: #fff;
  border-radius: 6px;
  padding: 9px 18px;
  border-bottom: none;
}

.gnav .btn-nav:hover,
.gnav .btn-nav[aria-current="page"] {
  background: var(--accent-dark);
  color: #fff;
  border-bottom-color: transparent;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 14px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(900px 440px at 84% -14%, rgba(47, 111, 208, .16), transparent 62%),
    linear-gradient(180deg, #ffffff 0%, #e9eff7 100%);
  color: var(--ink);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 27, 51, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 27, 51, .04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.hero .wrap {
  position: relative;
  z-index: 1;
  padding-top: 96px;
  padding-bottom: 96px;
}

.hero-label {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--accent-dark);
  background: #fff;
  border: 1px solid rgba(47, 111, 208, .35);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 26px;
}

.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.45;
  letter-spacing: .01em;
  font-weight: 700;
  color: var(--navy-900);
}

.hero p {
  max-width: 640px;
  margin: 0 0 34px;
  color: var(--ink-sub);
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ヒーロー内のロゴロックアップ */
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr .85fr;
  gap: 56px;
  align-items: center;
}

.hero-logo {
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

/* フッターのロゴ */
.footer-logo {
  width: 180px;
  margin-bottom: 20px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: transform .15s ease, background .15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #4a86e4; }

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, .55);
  color: #fff;
}

.btn-ghost:hover { background: rgba(255, 255, 255, .1); }

/* 明るい背景用のアウトラインボタン */
.btn-outline {
  background: #fff;
  border: 1px solid var(--navy-800);
  color: var(--navy-800);
}

.btn-outline:hover { background: var(--navy-100); }

.btn-solid { background: var(--navy-800); color: #fff; }
.btn-solid:hover { background: var(--accent-dark); }

/* ---------- Page head (下層ページ) ---------- */
.page-head {
  background: linear-gradient(180deg, #ffffff 0%, #e9eff7 100%);
  color: var(--navy-900);
  border-bottom: 1px solid var(--line);
}

.page-head .wrap {
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-head h1 {
  margin: 0 0 6px;
  font-size: clamp(24px, 3.2vw, 34px);
  letter-spacing: .04em;
}

.page-head .en {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--accent);
  font-weight: 700;
  margin: 0;
}

.breadcrumb {
  background: #fff;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-sub);
}

.breadcrumb .wrap { padding: 12px 24px; }
.breadcrumb a { color: var(--ink-sub); }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title .en {
  display: block;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 700;
}

.section-title h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: .04em;
}

.section-title p {
  margin: 14px auto 0;
  max-width: 720px;
  color: var(--ink-sub);
  font-size: 15px;
}

.lead {
  font-size: 17px;
  line-height: 2.05;
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
}

.card-no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--accent);
  margin-bottom: 12px;
}

.card h3 {
  margin: 0 0 12px;
  font-size: 17.5px;
  line-height: 1.6;
}

.card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-sub);
  line-height: 1.85;
}

.card ul {
  margin: 14px 0 0;
  padding-left: 1.1em;
  font-size: 14px;
  color: var(--ink-sub);
}

/* ---------- Feature rows ---------- */
.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.feature h3 {
  font-size: 17px;
  margin: 0 0 10px;
  padding-top: 16px;
  border-top: 3px solid var(--navy-800);
}

.feature p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-sub);
}

/* ---------- Table ---------- */
.table-outline {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.table-outline th,
.table-outline td {
  border-bottom: 1px solid var(--line);
  padding: 18px 22px;
  text-align: left;
  vertical-align: top;
  font-size: 15px;
}

.table-outline th {
  width: 220px;
  background: var(--navy-100);
  font-weight: 700;
  color: var(--navy-800);
  white-space: nowrap;
}

.table-outline tr:last-child th,
.table-outline tr:last-child td { border-bottom: none; }

.table-scroll { overflow-x: auto; }

/* ---------- 目的一覧 ---------- */
.purpose-list {
  counter-reset: purpose;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 28px;
}

.purpose-list li {
  counter-increment: purpose;
  position: relative;
  padding: 14px 16px 14px 56px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14.5px;
  line-height: 1.8;
}

.purpose-list li::before {
  content: counter(purpose, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .04em;
}

/* ---------- Notice ---------- */
.notice {
  background: #fff8e6;
  border: 1px solid #f0dca8;
  border-left: 4px solid #d9a520;
  border-radius: 6px;
  padding: 16px 20px;
  font-size: 14px;
  color: #7a5a10;
  margin: 0 0 28px;
}

.todo {
  display: inline-block;
  background: #fdecec;
  border: 1px dashed #e08b8b;
  color: #a63232;
  border-radius: 4px;
  padding: 1px 8px;
  font-size: 13px;
  letter-spacing: .04em;
}

/* ---------- Form ---------- */
.form-grid {
  display: grid;
  gap: 22px;
  max-width: 720px;
}

.field label {
  display: block;
  font-weight: 700;
  font-size: 14.5px;
  margin-bottom: 8px;
}

.req {
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  border-radius: 3px;
  padding: 2px 7px;
  margin-left: 8px;
  vertical-align: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid rgba(47, 111, 208, .35);
  border-color: var(--accent);
}

.form-note {
  font-size: 13px;
  color: var(--ink-sub);
}

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 100%);
  color: #fff;
  text-align: center;
}

.cta .btn-primary {
  background: #fff;
  color: var(--accent-dark);
}

.cta .btn-primary:hover { background: var(--navy-100); }

.cta .wrap { padding: 70px 24px; }

.cta h2 {
  margin: 0 0 14px;
  font-size: clamp(21px, 2.8vw, 28px);
}

.cta p {
  margin: 0 0 28px;
  color: rgba(255, 255, 255, .9);
  font-size: 15px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-alt);
  color: var(--ink-sub);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.site-footer .wrap {
  padding: 54px 24px 26px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
}

.site-footer h4 {
  color: var(--navy-900);
  font-size: 14px;
  letter-spacing: .1em;
  margin: 0 0 14px;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li { margin-bottom: 9px; }

.site-footer a {
  color: var(--ink-sub);
  text-decoration: none;
}

.site-footer a:hover { color: var(--accent-dark); text-decoration: underline; }

.footer-brand p {
  margin: 0;
  line-height: 1.9;
  font-size: 13.5px;
}

.copyright {
  border-top: 1px solid var(--line);
  text-align: center;
  padding: 18px 24px 26px;
  font-size: 12.5px;
  color: #8b95a4;
}

/* ---------- 文書ページ（プライバシー等） ---------- */
.doc h2 {
  font-size: 19px;
  margin: 44px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}

.doc h2:first-child { margin-top: 0; }

.doc p, .doc li { font-size: 15px; }
.doc ul, .doc ol { padding-left: 1.4em; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards,
  .feature-list,
  .purpose-list,
  .hero-grid,
  .site-footer .wrap { grid-template-columns: 1fr; }

  .hero-grid { gap: 34px; }
  .hero-logo { max-width: 240px; margin: 0; }

  .section { padding: 60px 0; }

  .nav-toggle { display: block; }

  .gnav {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    display: none;
  }

  .gnav.open { display: block; }

  .gnav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 18px;
  }

  .gnav li { border-bottom: 1px solid var(--line); }

  .gnav a { display: block; padding: 14px 0; border-bottom: none; }

  .gnav .btn-nav { text-align: center; margin-top: 14px; }

  .table-outline th {
    width: 150px;
    padding: 14px;
    font-size: 14px;
  }

  .table-outline td { padding: 14px; font-size: 14px; }

  .hero .wrap { padding-top: 64px; padding-bottom: 64px; }
}

@media (max-width: 520px) {
  .table-outline,
  .table-outline tbody,
  .table-outline tr,
  .table-outline th,
  .table-outline td { display: block; width: 100%; }

  .table-outline th { border-bottom: none; }

  .btn { width: 100%; text-align: center; }
}