/* 色と文字の基準をここにまとめ、サイト全体の印象をそろえています。 */
:root {
  --ink: #243744;
  --ink-soft: #486373;
  --blue: #1d6488;
  --blue-deep: #184c69;
  --paper: #fcfaf6;
  --white: #ffffff;
  --accent: #d19a75;
  --line: #d2dfe3;
  --font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-heading: "Noto Serif JP", "Hiragino Mincho ProN", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--blue-deep); outline-offset: 3px; box-shadow: 0 0 0 6px var(--white); }
section[id] { scroll-margin-top: 100px; }
.container { width: min(100% - 48px, 1120px); margin-inline: auto; }
.section-pad { padding-block: clamp(84px, 9vw, 128px); }

/* キーボードで使う方が本文へすぐ移動できるようにしています。 */
.skip-link {
  position: absolute;
  z-index: 100;
  left: 16px;
  top: -80px;
  padding: 10px 16px;
  border-radius: 10px;
  color: var(--white);
  background: var(--blue-deep);
}
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid rgba(37, 104, 143, .12);
  background: var(--paper);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 82px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; text-decoration: none; }
.brand-mark {
  /* 正方形の元画像を丸く切り抜き、ヘッダーの中で形を保ちます。 */
  display: block;
  flex: 0 0 auto;
  width: 50px;
  height: 50px;
  border: 2px solid var(--white);
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  background: #1da8e4;
  box-shadow: 0 8px 20px rgba(23, 108, 155, .18);
}
.brand-name { font: 700 21px/1.2 var(--font-body); letter-spacing: .02em; }
.site-nav { display: flex; align-items: center; gap: clamp(16px, 2vw, 30px); }
.site-nav a {
  padding-block: 10px;
  color: var(--ink-soft);
  font-size: .875rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease;
}
.site-nav a:hover { color: var(--blue); }
.site-nav a:last-child { color: var(--blue-deep); }

/* 最初に見える画面は、雑誌の扉のように文字と一枚の絵で構成します。 */
.hero {
  position: relative;
  background: #e9f2f5;
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center;
  gap: clamp(36px, 5vw, 72px);
  min-height: 610px;
  padding-block: 74px 86px;
}
.hero-copy { min-width: 0; padding-top: 24px; border-top: 3px solid var(--blue); }
.eyebrow, .section-label {
  margin: 0 0 22px;
  color: var(--blue);
  font-size: .76rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .15em;
}
.eyebrow { display: inline-flex; align-items: center; gap: 12px; letter-spacing: .03em; }
.eyebrow-icon { flex: 0 0 auto; width: 38px; height: 38px; border: 2px solid var(--white); border-radius: 50%; object-fit: cover; }
.hero h1 {
  margin: 0;
  /* 広い画面でも最後の一語だけが次行に落ちない大きさにします。 */
  font: 700 clamp(2.45rem, 3.5vw, 3.45rem)/1.42 var(--font-heading);
  letter-spacing: -.055em;
}
.hero h1 span { color: var(--blue); }
.hero-lead { max-width: 32.5em; margin: 30px 0 0; color: var(--ink-soft); font-size: clamp(1rem, 1.15vw, 1.08rem); line-height: 1.9; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 20px; margin-top: 36px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  min-height: 56px;
  padding: 14px 22px;
  border-radius: 5px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button span { font-size: 1.2em; font-weight: 400; }
.button-primary { color: var(--white); background: var(--blue-deep); }
.button-primary:hover { background: var(--blue); }
.button-text { color: var(--blue-deep); padding-inline: 10px; text-decoration: underline; text-underline-offset: 5px; }
.hero-visual { min-width: 0; }
.hero-image-frame {
  overflow: hidden;
  border: 1px solid rgba(29, 100, 136, .18);
  border-radius: 4px;
  background: #cce9f2;
  box-shadow: 16px 16px 0 rgba(255,255,255,.62);
}
.hero-image-frame img { width: 100%; aspect-ratio: 1.48; object-fit: cover; object-position: center; }

.section-heading h2 { margin: 0; font: 700 clamp(2.15rem, 3.1vw, 3.45rem)/1.42 var(--font-heading); letter-spacing: -.045em; }
.section-heading-centered { max-width: 730px; margin: 0 auto 48px; text-align: center; }
.section-heading-centered .section-label { margin-bottom: 13px; }
.section-intro { margin: 17px auto 0; color: var(--ink-soft); font-size: 1rem; line-height: 1.9; }

.audience { padding-block: 86px; background: var(--paper); }
.audience-layout { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); align-items: center; gap: 70px; }
.audience .section-heading { padding-left: 24px; border-left: 3px solid var(--blue); }
.audience-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.audience-list li { display: flex; align-items: flex-start; gap: 13px; min-height: 92px; padding: 21px 4px; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 1rem; font-weight: 600; line-height: 1.7; }
.check-mark { display: grid; place-items: center; flex: 0 0 auto; width: 24px; height: 24px; border: 1px solid var(--blue); border-radius: 50%; color: var(--blue); font-size: .82rem; line-height: 1; }

.services { background: #f0f5f6; }
.service-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 19px; }
.service-card { position: relative; grid-column: span 2; min-height: 286px; padding: 28px 16px 24px 0; border-top: 2px solid var(--blue); }
.service-card:nth-child(4), .service-card:nth-child(5) { grid-column: span 3; min-height: 250px; }
.service-number { display: block; margin-bottom: 25px; color: var(--blue); font: 700 1rem/1 var(--font-heading); }
.service-card h3 { margin: 0 0 14px; font: 700 clamp(1.14rem, 1.5vw, 1.38rem)/1.55 var(--font-heading); letter-spacing: -.025em; }
.service-card p { margin: 0; color: var(--ink-soft); font-size: 1rem; line-height: 1.8; }
.services-note { max-width: 810px; margin: 30px auto 0; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .9rem; text-align: left; line-height: 1.9; }

.works { background: var(--paper); }
.works-intro { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); gap: 74px; align-items: center; margin-bottom: 52px; }
.works-intro-copy > p { max-width: 34em; margin: 30px 0 0; color: var(--ink-soft); font-size: 1rem; }
.works-illustration { margin: 0; border: 1px solid var(--line); background: var(--white); }
.works-illustration img { width: 100%; aspect-ratio: 1.5; object-fit: cover; }
.work-feature, .tool-feature { margin-bottom: 68px; }
.feature-heading { max-width: 700px; margin-bottom: 28px; }
.feature-heading .section-label { margin-bottom: 11px; }
.feature-heading h3 { margin: 0; font: 700 clamp(1.55rem, 2.3vw, 2.3rem)/1.45 var(--font-heading); }
.feature-heading > p:last-child { margin: 13px 0 0; color: var(--ink-soft); font-size: 1rem; }
.consultation-list { border-top: 1px solid var(--line); }
.consultation-item { display: grid; grid-template-columns: minmax(85px, .24fr) minmax(0, 1fr); gap: 25px; padding: 27px 5px 29px; border-bottom: 1px solid var(--line); }
.consultation-mark { display: flex; align-items: center; align-self: start; gap: 16px; min-height: 74px; }
.consultation-index { color: var(--blue); font: 700 1.12rem/1.7 var(--font-heading); }
.consultation-mark img { display: block; width: 104px; height: 74px; object-fit: contain; }
.consultation-item h4, .tool-item h4 { margin: 0 0 9px; font: 700 clamp(1.1rem, 1.5vw, 1.32rem)/1.5 var(--font-heading); }
.consultation-item p, .tool-item > p:last-child { max-width: 60em; margin: 0; color: var(--ink-soft); font-size: 1rem; }
.tool-feature { padding: clamp(26px, 4vw, 48px); border-top: 1px solid #c6dce5; border-bottom: 1px solid #c6dce5; background: #e9f2f5; }
/* 3つの仕組みは、PCでは同じ幅・同じ装飾で並べます。 */
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; gap: 24px; }
.tool-item { padding: 18px 0 0; border-top: 2px solid var(--blue); }
.tool-flow { display: inline-block; margin: 0 0 20px; padding-bottom: 5px; border-bottom: 1px solid #a9c8d6; color: var(--blue-deep); font-size: .8rem; font-weight: 700; line-height: 1.5; }
.tool-flow span { padding-inline: 4px; }
.tool-note { max-width: 76em; margin: 27px 0 0; padding-top: 19px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .94rem; }
.work-catalog-title { margin: 0 0 21px; font: 700 clamp(1.3rem, 2vw, 1.7rem)/1.5 var(--font-heading); }
.work-catalog-notice { max-width: 70em; margin: -9px 0 22px; color: var(--ink-soft); font-size: .94rem; }
.work-groups { display: grid; gap: 14px; }
.work-group { overflow: hidden; border-top: 1px solid var(--line); background: transparent; }
.work-group:last-child { border-bottom: 1px solid var(--line); }
.work-group summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 60px; padding: 22px 4px; cursor: pointer; list-style: none; }
.work-group summary::-webkit-details-marker { display: none; }
.work-group-title { font: 700 clamp(1.1rem, 1.7vw, 1.4rem)/1.5 var(--font-heading); }
.work-group-toggle { position: relative; flex: 0 0 auto; width: 33px; height: 33px; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); }
.work-group-toggle::before, .work-group-toggle::after { content: ""; position: absolute; top: 50%; left: 50%; width: 12px; height: 2px; border-radius: 2px; background: var(--blue); transform: translate(-50%, -50%); }
.work-group-toggle::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .2s ease; }
.work-group[open] .work-group-toggle::after { transform: translate(-50%, -50%) rotate(0); }
.work-group-body { padding: 0 4px 32px; }
.work-group-body ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; row-gap: 0; margin: 0; padding: 7px 0 0; border-top: 1px solid var(--line); list-style: none; }
.work-group-body li { position: relative; padding: 14px 0 14px 22px; border-bottom: 1px solid #edf3f5; color: var(--ink-soft); font-size: 1rem; line-height: 1.75; }
.work-group-body li::before { content: ""; position: absolute; top: 26px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

.voices { background: #edf4f6; }
.voices .section-heading-centered { max-width: 790px; }
.voice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.voice-card { display: flex; flex-direction: column; min-height: 205px; margin: 0; padding: 26px 16px 24px 0; border-top: 2px solid var(--blue); }
.voice-card::before { content: "“"; display: block; height: 28px; color: #86b8cf; font: 900 3.9rem/.65 Georgia, serif; }
.voice-card blockquote { margin: 19px 0 0; color: var(--ink); font: 700 1rem/1.9 var(--font-heading); }

.values { background: var(--paper); }
.values-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 90px; }
.values-side { position: sticky; top: 125px; align-self: start; }
.values .section-heading { padding-left: 27px; border-left: 3px solid var(--blue); }
.values-illustration { overflow: hidden; margin: 34px 0 0; border: 1px solid var(--line); }
.values-illustration img { width: 100%; aspect-ratio: 1.54; object-fit: cover; }
.values-copy { display: grid; gap: 22px; }
.values-copy p { margin: 0; padding: 10px 0 20px 25px; border-left: 2px solid #b9d2dc; color: var(--ink-soft); }
.values-copy p:first-child { color: var(--ink); font-weight: 700; }

.contact { padding-top: 38px; background: var(--paper); }
.contact-wrap { position: relative; }
.contact-panel { position: relative; overflow: hidden; border-radius: 5px; background: var(--blue-deep); color: var(--white); }
.contact-content { position: relative; z-index: 1; max-width: 850px; margin-inline: auto; padding: clamp(55px, 8vw, 100px) 36px; text-align: center; }
.contact .section-label { color: #b9dfed; }
.contact h2 { margin: 0; font: 700 clamp(2.2rem, 3.3vw, 3.7rem)/1.4 var(--font-heading); }
.contact-content > p:not(.section-label):not(.contact-note) { max-width: 640px; margin: 22px auto 0; color: #e3f2f8; font-size: 1rem; }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 35px; }
.button-light { color: var(--blue-deep); background: var(--white); }
.button-outline { color: var(--white); border: 1px solid rgba(255, 255, 255, .7); background: rgba(255, 255, 255, .07); }
.button-outline:hover { background: rgba(255,255,255,.14); }
.contact-note { margin: 27px 0 0; color: #cce6ef; font-size: .78rem; }
.site-footer { padding-block: 30px 42px; border-top: 1px solid var(--line); background: var(--paper); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-inner p { margin: 0; color: var(--ink-soft); font-size: .75rem; }
.footer-inner a { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; color: var(--blue); text-decoration: none; }

/* タブレットではカードを2列にし、文字が窮屈にならないようにします。 */
@media (max-width: 1040px) {
  .header-inner { gap: 16px; }
  .site-nav { gap: 14px; }
  .site-nav a { font-size: .82rem; }
  .hero-inner { gap: 26px; }
  .hero h1 { font-size: clamp(2.55rem, 4.65vw, 3.8rem); }
  .audience-layout { gap: 40px; }
  .works-intro, .values-layout { gap: 50px; }
}

@media (max-width: 800px) {
  /* 狭い画面では見出しを隠さず、メニューを折り返して全項目を見せます。 */
  .site-header { position: relative; }
  .header-inner { display: block; min-height: 0; padding-top: 14px; }
  .brand { margin-bottom: 7px; }
  .site-nav { flex-wrap: wrap; gap: 1px 16px; }
  .site-nav a { display: inline-flex; flex: 0 0 auto; align-items: center; min-height: 44px; font-size: .875rem; padding-block: 7px; }
  section[id] { scroll-margin-top: 16px; }
  .hero-inner { grid-template-columns: 1fr; min-height: 0; gap: 35px; padding-block: 65px 100px; }
  .hero-copy { max-width: 650px; }
  .hero h1 { font-size: clamp(2.7rem, 7.2vw, 4.3rem); }
  .hero-visual { width: min(100%, 690px); margin-inline: auto; padding: 0 12px 12px 0; }
  .hero-image-frame img { aspect-ratio: 1.9; }
  .audience-layout, .works-intro, .values-layout { grid-template-columns: 1fr; gap: 32px; }
  .tool-grid { grid-template-columns: 1fr; }
  .audience .section-heading, .values .section-heading { padding-left: 20px; }
  .values-side { position: static; }
  .service-card, .service-card:nth-child(4), .service-card:nth-child(5) { grid-column: span 3; min-height: 0; }
  .voice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* スマホでは横はみ出しを避け、本文を1列で読みやすくします。 */
@media (max-width: 600px) {
  .container { width: min(100% - 34px, 1120px); }
  .section-pad { padding-block: 78px; }
  .header-inner { padding-top: 10px; padding-bottom: 10px; }
  .brand { gap: 9px; }
  .brand-mark { width: 44px; height: 44px; }
  .brand-name { font-size: 18px; }
  .hero-inner { gap: 25px; padding-block: 55px 90px; }
  .hero h1 { font-size: clamp(2.2rem, 9.3vw, 3.45rem); white-space: normal; line-height: 1.34; }
  .hero-lead { margin-top: 22px; font-size: 1rem; line-height: 1.9; }
  .hero-actions { gap: 6px 13px; margin-top: 25px; }
  .button { min-height: 52px; padding: 12px 18px; font-size: .94rem; }
  .hero-image-frame img { aspect-ratio: 1.5; }
  .eyebrow { margin-bottom: 18px; font-size: .82rem; }
  .section-heading h2 { font-size: clamp(2rem, 9vw, 2.8rem); }
  .audience { padding-block: 70px; }
  .audience-list { grid-template-columns: 1fr; gap: 11px; }
  .audience-list li { min-height: 0; padding: 17px 0; }
  .section-heading-centered { margin-bottom: 33px; }
  .service-grid { grid-template-columns: 1fr; gap: 14px; }
  .service-card, .service-card:nth-child(4), .service-card:nth-child(5) { grid-column: auto; padding: 27px 8px 24px 0; }
  .service-card h3 { font-size: 1.13rem; }
  .services-note { text-align: left; }
  .works-intro { gap: 19px; margin-bottom: 32px; }
  .work-feature, .tool-feature { margin-bottom: 54px; }
  .consultation-item { grid-template-columns: 1fr; gap: 5px; padding-block: 22px; }
  .tool-feature { padding: 27px 22px; }
  .works-intro-copy > p { margin-top: 18px; }
  .work-group summary { padding: 20px 4px; }
  .work-group-title { font-size: 1.07rem; }
  .work-group-body { padding: 0 4px 22px; }
  .work-group-body ul { grid-template-columns: 1fr; }
  .work-group-body li { padding-block: 11px; }
  .work-group-body li::before { top: 23px; }
  .voice-grid { grid-template-columns: 1fr; gap: 13px; }
  .voice-card { min-height: 0; padding: 22px 8px 22px 0; }
  .values-copy { gap: 13px; }
  .values-illustration { max-width: 420px; margin-top: 28px; }
  .contact { padding-top: 22px; }
  .contact-content { padding: 62px 22px; }
  .contact h2 { font-size: 2.15rem; }
  .contact-actions { display: grid; gap: 11px; }
  .contact-actions .button { width: 100%; gap: 8px; padding-inline: 8px; font-size: clamp(.75rem, 3.5vw, .88rem); white-space: nowrap; }
  .footer-inner { align-items: flex-start; }
  .footer-inner p { max-width: 240px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}