/* =========================================================
   Corporise — corporate site
   方針：インディゴ単色のトーンでまとめる／角丸・グラデーション・影は使わない
   色を変えるときは :root の --indigo 系だけを触る
   ========================================================= */
:root {
  /* 軽井沢インディゴブルー（基調色）と、その明度違い */
  --indigo-900: #121d36;
  --indigo-800: #182848;
  --indigo-700: #1f335c;   /* 基調色 */
  --indigo-600: #2c4677;
  --indigo-500: #48618f;
  --indigo-300: #9aa9c4;
  --indigo-200: #c9d2e2;
  --indigo-100: #e6eaf1;
  --indigo-50:  #f2f4f8;
  /* 無彩色（わずかに青み） */
  --ink: #161b26;
  --text: #2d3340;
  --sub: #5d6575;
  --line: #d8dce4;
  --paper: #fbfbfa;
  --white: #ffffff;

  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --wide: 1120px;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font-family: var(--sans); font-size: 15px; line-height: 1.9; letter-spacing: .02em;
  font-feature-settings: "palt" 1;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 600; line-height: 1.5; margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { width: min(100% - 48px, var(--wide)); margin-inline: auto; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10; background: rgba(251,251,250,.96);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo {
  font-family: var(--sans); font-weight: 700; font-size: 19px; letter-spacing: .2em;
  color: var(--indigo-700); text-decoration: none;
}
.logo-mark { display: inline-block; width: 12px; height: 12px; background: var(--indigo-700); margin-right: 10px; vertical-align: 1px; }
.gnav { display: flex; align-items: center; gap: 28px; font-size: 13.5px; }
.gnav a { text-decoration: none; color: var(--text); }
.gnav a:hover { color: var(--indigo-700); }
.gnav .btn { color: var(--white); }
.menu-toggle { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px; padding: 13px 24px;
  background: var(--indigo-700); color: var(--white); text-decoration: none;
  font-size: 14px; font-weight: 600; letter-spacing: .06em; border: 1px solid var(--indigo-700);
  transition: background .2s ease;
}
.btn:hover { background: var(--indigo-800); }
.btn.small { padding: 9px 18px; font-size: 13px; }
.btn.ghost { background: transparent; color: var(--indigo-700); }
.btn.ghost:hover { background: var(--indigo-50); }
.btn.on-dark { background: var(--white); color: var(--indigo-800); border-color: var(--white); }
.btn.on-dark:hover { background: var(--indigo-100); }
.arrow { display: inline-block; width: 14px; height: 1px; background: currentColor; position: relative; }
.arrow::after { content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }

/* ---------- section common ---------- */
section { padding: 112px 0; }
.label {
  display: flex; align-items: center; gap: 14px; margin-bottom: 20px;
  font-family: var(--serif); font-size: 13px; letter-spacing: .18em; color: var(--indigo-600);
}
.label::before { content: ""; width: 8px; height: 8px; background: var(--indigo-700); }
.label span { color: var(--sub); font-family: var(--sans); letter-spacing: .1em; font-size: 12px; }
.h-section { font-family: var(--serif); font-size: clamp(24px, 3.2vw, 34px); letter-spacing: .04em; }
.lead { margin-top: 24px; max-width: 760px; color: var(--text); font-size: 15.5px; }
.section-head { margin-bottom: 56px; }

/* ---------- hero ---------- */
.hero { padding: 0; border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; min-height: 620px; align-items: center; gap: 48px; }
.hero-eyebrow { font-family: var(--serif); letter-spacing: .24em; color: var(--indigo-600); font-size: 13px; margin-bottom: 28px; }
.hero h1 { font-family: var(--serif); font-size: clamp(34px, 5.2vw, 58px); letter-spacing: .06em; line-height: 1.35; color: var(--indigo-900); }
.hero .lead { margin-top: 28px; font-size: 16px; }
.hero-actions { margin-top: 44px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-fields { margin-top: 48px; display: flex; gap: 0; border-top: 1px solid var(--line); }
.hero-fields li { flex: 1; padding: 16px 0 0; font-size: 13px; color: var(--sub); }
.hero-fields li b { display: block; color: var(--ink); font-size: 14.5px; font-weight: 600; }
.hero-fields li + li { padding-left: 24px; border-left: 1px solid var(--line); margin-left: 24px; }

/* 四角形だけで組んだキービジュアル */
.tiles { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; aspect-ratio: 1 / 1; width: 100%; max-width: 440px; justify-self: end; }
.tiles i { display: block; background: var(--indigo-100); }
.tiles i.t1 { background: var(--indigo-200); }
.tiles i.t2 { background: var(--indigo-300); }
.tiles i.t3 { background: var(--indigo-500); }
.tiles i.t4 { background: var(--indigo-700); }
.tiles i.t5 { background: var(--indigo-900); }
.tiles i.t0 { background: transparent; }

/* ---------- business overview ---------- */
.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); background: var(--white); }
.biz { padding: 48px 44px 44px; display: flex; flex-direction: column; text-decoration: none; transition: background .2s; }
.biz + .biz { border-left: 1px solid var(--line); }
.biz:hover { background: var(--indigo-50); }
.biz-no { font-family: var(--serif); color: var(--indigo-600); font-size: 14px; letter-spacing: .14em; }
.biz h3 { font-family: var(--serif); font-size: 26px; margin-top: 14px; letter-spacing: .05em; }
.biz .en { font-size: 12px; color: var(--sub); letter-spacing: .14em; margin-top: 2px; }
.biz p { margin-top: 20px; }
.biz .tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.biz .tags li { font-size: 12px; padding: 3px 10px; border: 1px solid var(--indigo-200); color: var(--indigo-700); background: var(--white); }
.biz .more { margin-top: auto; padding-top: 32px; display: flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 600; color: var(--indigo-700); letter-spacing: .08em; }

/* ---------- AI section ---------- */
.ai { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 2px solid var(--indigo-700); }
.svc { padding: 32px 26px 36px; border-bottom: 1px solid var(--line); }
.svc + .svc { border-left: 1px solid var(--line); }
.svc .no { width: 36px; height: 36px; display: grid; place-items: center; background: var(--indigo-700); color: var(--white); font-family: var(--serif); font-size: 14px; }
.svc h3 { font-size: 17px; margin-top: 22px; }
.svc p { margin-top: 12px; font-size: 14px; color: var(--sub); line-height: 1.85; }
.svc ul { margin-top: 18px; font-size: 13px; }
.svc li { padding: 6px 0 6px 16px; border-top: 1px dashed var(--line); position: relative; }
.svc li::before { content: ""; position: absolute; left: 0; top: 15px; width: 6px; height: 6px; background: var(--indigo-300); }

.sub-head { margin: 88px 0 28px; display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.sub-head h3 { font-family: var(--serif); font-size: 22px; letter-spacing: .05em; }
.sub-head p { color: var(--sub); font-size: 13.5px; }

/* plans */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.plan { padding: 32px 30px; background: var(--white); }
.plan + .plan { border-left: 1px solid var(--line); }
.plan.featured { background: var(--indigo-50); }
.plan .pname { font-family: var(--serif); font-size: 13px; letter-spacing: .16em; color: var(--indigo-600); }
.plan .ptitle { font-size: 17px; font-weight: 600; color: var(--ink); margin-top: 6px; }
.plan .price { margin-top: 18px; font-family: var(--serif); color: var(--indigo-900); font-size: 30px; letter-spacing: .02em; }
.plan .price small { font-family: var(--sans); font-size: 13px; color: var(--sub); margin-left: 4px; }
.plan .meta { margin-top: 6px; font-size: 13px; color: var(--sub); }
.plan ul { margin-top: 20px; font-size: 13.5px; border-top: 1px solid var(--line); }
.plan li { padding: 9px 0 9px 18px; border-bottom: 1px solid var(--line); position: relative; }
.plan li::before { content: ""; position: absolute; left: 0; top: 18px; width: 8px; height: 1px; background: var(--indigo-500); }
.plan li.inherit { color: var(--sub); }
.note { margin-top: 14px; font-size: 12px; color: var(--sub); }

.training { display: grid; grid-template-columns: 1.2fr .8fr; border: 1px solid var(--line); margin-top: 24px; background: var(--white); }
.training .body { padding: 32px 34px; }
.training .body h4 { font-size: 17px; }
.training .body p { margin-top: 10px; font-size: 14px; }
.training .steps { margin-top: 18px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.training .steps li { padding: 12px 10px 0 0; font-size: 12.5px; color: var(--sub); }
.training .steps li b { display: block; font-family: var(--serif); color: var(--indigo-700); font-size: 12px; letter-spacing: .1em; }
.training .cost { background: var(--indigo-700); color: var(--white); padding: 32px 34px; display: flex; flex-direction: column; justify-content: center; }
.training .cost .k, .training .cost .v { display: block; }
.training .cost .k { font-size: 12.5px; letter-spacing: .1em; color: var(--indigo-200); }
.training .cost .v { font-family: var(--serif); font-size: 30px; margin-top: 2px; }
.training .cost .v small { font-family: var(--sans); font-size: 13px; color: var(--indigo-200); margin-left: 4px; }
.training .cost .v2 { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--indigo-500); }
.training .cost p { margin-top: 12px; font-size: 11.5px; color: var(--indigo-200); line-height: 1.7; }

/* flow */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); counter-reset: f; }
.flow li { padding: 22px 20px 24px; border: 1px solid var(--line); background: var(--white); position: relative; }
.flow li + li { border-left: none; }
.flow li .step { font-family: var(--serif); color: var(--indigo-600); font-size: 12px; letter-spacing: .16em; }
.flow li b { display: block; font-size: 15px; color: var(--ink); margin-top: 6px; }
.flow li span { display: block; font-size: 12.5px; color: var(--sub); margin-top: 8px; line-height: 1.75; }

/* ---------- Corporate planning (pro firm) ---------- */
.cp { background: var(--indigo-900); color: var(--indigo-100); }
.cp .label { color: var(--indigo-300); }
.cp .label::before { background: var(--indigo-300); }
.cp .label span { color: var(--indigo-300); }
.cp .h-section, .cp h3, .cp h4 { color: var(--white); }
.cp .lead { color: var(--indigo-100); }
.cp-cols { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.cp-cols > div:first-child { position: sticky; top: 108px; }
.statement { font-family: var(--serif); font-size: clamp(22px, 2.6vw, 28px); line-height: 1.75; color: var(--white); letter-spacing: .05em; }
.statement + p { margin-top: 24px; color: var(--indigo-200); font-size: 14.5px; }
.capabilities { border-top: 1px solid var(--indigo-600); }
.capabilities li { display: grid; grid-template-columns: 56px 1fr; gap: 8px 16px; padding: 22px 0; border-bottom: 1px solid var(--indigo-600); }
.capabilities .n { font-family: var(--serif); color: var(--indigo-300); font-size: 14px; letter-spacing: .1em; padding-top: 2px; }
.capabilities h4 { font-size: 16.5px; font-weight: 600; }
.capabilities p { grid-column: 2; font-size: 13.5px; color: var(--indigo-200); line-height: 1.8; }

.approach { margin-top: 96px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--indigo-600); }
.approach div { padding: 30px 28px; }
.approach div + div { border-left: 1px solid var(--indigo-600); }
.approach .k { font-family: var(--serif); font-size: 12px; letter-spacing: .2em; color: var(--indigo-300); }
.approach h4 { margin-top: 10px; font-size: 17px; }
.approach p { margin-top: 10px; font-size: 13.5px; color: var(--indigo-200); }

.cp-plans { margin-top: 64px; }
.cp-plans .sub-head { margin-top: 0; }
.cp-plans .sub-head p { color: var(--indigo-300); }
.cp-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.cp-table th, .cp-table td { border-top: 1px solid var(--indigo-600); border-bottom: 1px solid var(--indigo-600); padding: 18px 20px; text-align: left; vertical-align: top; }
.cp-table thead th { font-family: var(--serif); font-weight: 500; color: var(--indigo-300); font-size: 13px; letter-spacing: .14em; }
.cp-table tbody th { color: var(--indigo-300); font-weight: 500; width: 140px; font-size: 13px; }
.cp-table td { color: var(--white); }
.cp-table td.price { font-family: var(--serif); font-size: 22px; }
.cp-table td.price small { font-family: var(--sans); font-size: 12px; color: var(--indigo-300); margin-left: 4px; }
.cp-table td + td, .cp-table th + td { border-left: 1px solid var(--indigo-600); }

/* ---------- profile ---------- */
.profile-grid { display: grid; grid-template-columns: 300px 1fr; gap: 64px; align-items: start; }
.portrait { aspect-ratio: 4 / 5; background: var(--indigo-100); display: grid; place-items: center; border: 1px solid var(--line); }
.portrait span { font-family: var(--serif); font-size: 13px; letter-spacing: .2em; color: var(--indigo-500); }
.profile .role { font-size: 13px; color: var(--sub); letter-spacing: .1em; }
.profile .name { font-family: var(--serif); font-size: 30px; letter-spacing: .14em; margin-top: 4px; }
.profile .name small { font-family: var(--sans); font-size: 13px; color: var(--sub); letter-spacing: .12em; margin-left: 14px; font-weight: 400; }
.profile .bio { margin-top: 24px; }
.career { margin-top: 28px; border-top: 1px solid var(--line); }
.career li { display: grid; grid-template-columns: 230px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.career li b { font-weight: 600; color: var(--ink); }
.career li span { color: var(--sub); }

/* ---------- company ---------- */
.company { background: var(--white); border-top: 1px solid var(--line); }
.company-table { width: 100%; border-collapse: collapse; font-size: 14.5px; border-top: 2px solid var(--indigo-700); }
.company-table th, .company-table td { padding: 20px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.company-table th { width: 200px; font-weight: 600; color: var(--ink); font-size: 14px; }

/* ---------- contact ---------- */
.contact { background: var(--indigo-700); color: var(--white); padding: 96px 0; }
.contact .wrap { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.contact .label { color: var(--indigo-200); }
.contact .label::before { background: var(--white); }
.contact .label span { color: var(--indigo-200); }
.contact h2 { color: var(--white); font-family: var(--serif); font-size: clamp(24px, 3vw, 32px); letter-spacing: .05em; }
.contact p { margin-top: 18px; color: var(--indigo-100); }
.contact .mail { margin-top: 14px; font-size: 13px; color: var(--indigo-200); }

/* ---------- footer ---------- */
.site-footer { background: var(--indigo-900); color: var(--indigo-200); padding: 56px 0 40px; font-size: 13px; }
.site-footer .wrap { display: grid; grid-template-columns: 1fr auto; gap: 32px; }
.site-footer .logo { color: var(--white); }
.site-footer .logo-mark { background: var(--white); }
.site-footer address { font-style: normal; margin-top: 16px; line-height: 1.9; }
.fnav { display: grid; grid-template-columns: repeat(2, auto); gap: 6px 40px; }
.fnav a { text-decoration: none; color: var(--indigo-200); }
.fnav a:hover { color: var(--white); }
.copy { grid-column: 1 / -1; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--indigo-700); font-size: 12px; color: var(--indigo-300); }

/* ---------- 404 ---------- */
.nf { min-height: calc(100vh - 68px - 220px); display: grid; align-items: center; }
.nf .code { font-family: var(--serif); font-size: 72px; color: var(--indigo-700); letter-spacing: .1em; line-height: 1; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  section { padding: 80px 0; }
  .hero .wrap { grid-template-columns: 1fr; min-height: 0; padding: 64px 0 72px; gap: 56px; }
  .tiles { justify-self: start; max-width: 320px; }
  .svc-grid { grid-template-columns: 1fr 1fr; }
  .svc:nth-child(3) { border-left: none; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow li { border-left: 1px solid var(--line) !important; margin: 0 -1px -1px 0; }
  .cp-cols { grid-template-columns: 1fr; gap: 48px; }
  .cp-cols > div:first-child { position: static; }
  .profile-grid { grid-template-columns: 1fr; gap: 32px; }
  .portrait { max-width: 240px; }
}
@media (max-width: 760px) {
  body { font-size: 14.5px; }
  .gnav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 24px 20px; }
  .gnav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .gnav .btn { margin-top: 16px; justify-content: center; border-bottom: none; }
  .gnav.open { display: flex; }
  .menu-toggle { display: grid; gap: 5px; width: 40px; height: 40px; place-content: center; background: none; border: 1px solid var(--line); cursor: pointer; }
  .menu-toggle i { display: block; width: 18px; height: 1.5px; background: var(--ink); }
  .hero-fields { flex-direction: column; }
  .hero-fields li + li { border-left: none; margin-left: 0; padding-left: 0; border-top: 1px solid var(--line); }
  .biz-grid, .plans, .approach, .training { grid-template-columns: 1fr; }
  .biz + .biz, .plan + .plan, .approach div + div { border-left: none; border-top: 1px solid var(--line); }
  .approach div + div { border-top-color: var(--indigo-600); }
  .biz { padding: 36px 28px; }
  .svc-grid { grid-template-columns: 1fr; }
  .svc + .svc { border-left: none; }
  .flow { grid-template-columns: 1fr; }
  .training .steps { grid-template-columns: 1fr 1fr; }
  .cp-table, .cp-table tbody, .cp-table tr, .cp-table th, .cp-table td { display: block; width: 100%; }
  .cp-table thead { display: none; }
  .cp-table tr { border-top: 1px solid var(--indigo-600); padding: 12px 0; }
  .cp-table th, .cp-table td { border: none !important; padding: 6px 0; }
  .cp-table td::before { content: attr(data-plan); display: block; font-size: 11px; color: var(--indigo-300); letter-spacing: .14em; font-family: var(--serif); }
  .career li { grid-template-columns: 1fr; gap: 2px; }
  .company-table th { width: 110px; }
  .contact .wrap, .site-footer .wrap { grid-template-columns: 1fr; }
}