/* ==========================================================================
   デザイントークン
   色・フォント・余白はここを変更すればサイト全体に反映されます
   ========================================================================== */
:root {
  /* 色 */
  --color-primary: #12355B;
  --color-primary-dark: #0C2542;
  --color-accent: #0B7A7C;
  --color-accent-dark: #086163;
  --color-text: #1B2733;
  --color-text-muted: #566472;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F3F6F8;
  --color-line: #DDE4EA;
  --color-on-dark: #FFFFFF;
  --color-on-dark-muted: #C9D6E2;
  --color-line-on-dark: rgba(255, 255, 255, 0.24);

  /* フォント */
  --font-base: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium", YuGothic, Meiryo, sans-serif;
  --fs-xs: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.375rem;
  --fs-title: 1.625rem;
  --fs-statement: 1.75rem;
  --fs-hero: 2.125rem;
  --lh-base: 1.85;
  --lh-tight: 1.45;

  /* 余白 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --gutter: 1.25rem;
  --section-y: 4rem;

  /* レイアウト */
  --container: 70rem;
  --container-narrow: 50rem;
  --header-h: 60px;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow: 0 2px 12px rgba(18, 53, 91, 0.08);
  --form-height: 940px;
  --logo-h: 60px;

  /* スクロールエフェクト */
  --reveal-duration: 0.8s;
  --reveal-distance: 24px;
  --reveal-stagger: 0.1s;
  --reveal-easing: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (min-width: 700px) {
  :root {
    --fs-title: 1.875rem;
    --fs-statement: 2.25rem;
    --fs-hero: 2.75rem;
    --gutter: 2rem;
    --section-y: 5.5rem;
    --form-height: 820px;
  }
}

@media (min-width: 1100px) {
  :root {
    --fs-hero: 3.25rem;
    --section-y: 7rem;
  }
}

/* ==========================================================================
   ベース
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-base);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  overflow-wrap: break-word;
}

body.is-nav-open {
  overflow: hidden;
}

h1,
h2,
h3,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

h1,
h2,
h3 {
  color: var(--color-primary);
  font-feature-settings: "palt";
  font-weight: 700;
  line-height: var(--lh-tight);
  text-wrap: balance;
  word-break: auto-phrase;
}

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

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

address {
  font-style: normal;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

[tabindex="-1"]:focus {
  outline: none;
}

section[id] {
  scroll-margin-top: calc(var(--header-h) + 1px);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-3);
  z-index: 200;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-on-dark);
}

.skip-link:focus {
  top: var(--space-3);
}

/* ==========================================================================
   共通パーツ
   ========================================================================== */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: calc(var(--container-narrow) + var(--gutter) * 2);
}

.section {
  padding-block: var(--section-y);
}

.section--soft {
  background: var(--color-bg-soft);
}

.section--dark {
  background: var(--color-primary);
  color: var(--color-on-dark);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-on-dark);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  font-size: var(--fs-title);
}

.section-title::before {
  flex: none;
  width: 2rem;
  height: 3px;
  background: var(--color-accent);
  content: "";
}

.section--dark .section-title::before {
  background: var(--color-on-dark-muted);
}

.section-title:has(+ .section-lead) {
  margin-bottom: var(--space-4);
}

.section-lead {
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: var(--space-2) var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.button--small {
  min-height: 2.5rem;
  padding: var(--space-1) var(--space-4);
  font-size: var(--fs-sm);
}

.button--accent {
  background: var(--color-accent);
  color: var(--color-on-dark);
}

.button--accent:hover {
  background: var(--color-accent-dark);
}

.button--ghost {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.button--ghost:hover {
  background: var(--color-primary);
  color: var(--color-on-dark);
}

/* ==========================================================================
   ヘッダー
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg);
  transition: box-shadow 0.2s;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--header-h);
  max-width: 90rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.3;
  text-decoration: none;
}

.brand__mark {
  flex: none;
  width: 1.375rem;
  height: 1.375rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary) 50%, var(--color-accent) 50%);
}

.nav-toggle {
  display: flex;
  flex: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.nav-toggle__bar {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.global-nav {
  position: fixed;
  inset: calc(var(--header-h) + 1px) 0 0;
  padding: var(--space-3) var(--gutter) var(--space-7);
  overflow-y: auto;
  background: var(--color-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.global-nav.is-open {
  opacity: 1;
  visibility: visible;
}

.global-nav__list a:not(.button) {
  display: block;
  padding: var(--space-4) var(--space-1);
  border-bottom: 1px solid var(--color-line);
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
}

.global-nav__cta {
  margin-top: var(--space-5);
}

.global-nav__cta .button {
  width: 100%;
  min-height: 3rem;
}

@media (min-width: 1200px) {
  .nav-toggle {
    display: none;
  }

  .global-nav {
    position: static;
    flex: none;
    padding: 0;
    overflow: visible;
    background: none;
    opacity: 1;
    visibility: visible;
    transition: none;
  }

  .global-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-5);
  }

  .global-nav__list a:not(.button) {
    padding: var(--space-2) 0;
    border-bottom: 0;
    font-size: var(--fs-sm);
    font-weight: 400;
    white-space: nowrap;
  }

  .global-nav__list a:not(.button):hover {
    color: var(--color-accent);
  }

  .global-nav__cta {
    margin-top: 0;
  }

  .global-nav__cta .button {
    width: auto;
    min-height: 2.5rem;
    white-space: nowrap;
  }
}

/* ==========================================================================
   メインビジュアル
   ========================================================================== */
.hero__body {
  padding: var(--space-7) var(--gutter) var(--space-6);
}

.hero__eyebrow {
  margin-bottom: var(--space-3);
  color: var(--color-accent);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.hero__title {
  margin-bottom: var(--space-4);
  font-size: var(--fs-hero);
}

.hero__lead {
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
}

.hero__actions {
  display: grid;
  gap: var(--space-3);
}

.hero__media {
  margin-left: var(--gutter);
}

.hero__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius) 0 0 var(--radius);
  object-fit: cover;
}

@media (min-width: 700px) {
  .hero__actions {
    display: flex;
    flex-wrap: wrap;
  }
}

@media (min-width: 1000px) {
  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-7);
    padding-block: var(--space-7);
  }

  .hero__body {
    padding-block: 0;
    padding-right: 0;
    padding-left: max(var(--gutter), calc((100vw - var(--container)) / 2));
  }

  .hero__media {
    margin-left: 0;
  }

  .hero__media img {
    min-height: 32rem;
  }
}

/* ==========================================================================
   私たちについて
   ========================================================================== */
.split {
  display: grid;
  gap: var(--space-6);
}

.split__media img {
  width: 100%;
  border-radius: var(--radius);
}

.split__body p + p,
.message__body p + p {
  margin-top: var(--space-4);
}

@media (min-width: 900px) {
  .split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-8);
  }
}

/* ==========================================================================
   理念
   ========================================================================== */
.philosophy__statement {
  margin-bottom: var(--space-4);
  font-feature-settings: "palt";
  font-size: var(--fs-statement);
  font-weight: 700;
  line-height: var(--lh-tight);
  text-wrap: balance;
  word-break: auto-phrase;
}

.philosophy__lead {
  max-width: 44rem;
  color: var(--color-on-dark-muted);
}

.philosophy__values {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-7);
}

.philosophy__values li {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line-on-dark);
}

.philosophy__values h3 {
  margin-bottom: var(--space-2);
  font-size: var(--fs-lg);
}

.philosophy__values p {
  color: var(--color-on-dark-muted);
  font-size: var(--fs-sm);
}

@media (min-width: 700px) {
  .philosophy__values {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }
}

/* ==========================================================================
   選ばれる理由
   ========================================================================== */
.reason-list {
  display: grid;
  counter-reset: reason;
}

.reason-list__item {
  position: relative;
  padding-block: var(--space-5);
  padding-left: 4rem;
  border-top: 1px solid var(--color-line);
  counter-increment: reason;
}

.reason-list__item:last-child {
  border-bottom: 1px solid var(--color-line);
}

.reason-list__item::before {
  position: absolute;
  top: var(--space-5);
  left: 0;
  color: var(--color-accent);
  content: counter(reason, decimal-leading-zero);
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: var(--lh-tight);
}

.reason-list h3 {
  margin-bottom: var(--space-2);
  font-size: var(--fs-lg);
}

.reason-list p {
  color: var(--color-text-muted);
}

@media (min-width: 900px) {
  .reason-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .reason-list__item,
  .reason-list__item:last-child {
    padding-block: var(--space-5) 0;
    padding-left: 0;
    border-top: 2px solid var(--color-primary);
    border-bottom: 0;
  }

  .reason-list__item::before {
    position: static;
    display: block;
    margin-bottom: var(--space-3);
  }
}

/* ==========================================================================
   サービス内容
   ========================================================================== */
.card-grid {
  display: grid;
  gap: var(--space-5);
}

.card {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--color-bg);
  box-shadow: var(--shadow);
}

.card img {
  width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

.card__body {
  padding: var(--space-5);
}

.card h3 {
  margin-bottom: var(--space-2);
  font-size: var(--fs-lg);
}

.card p {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ==========================================================================
   お客様の声
   ========================================================================== */
.voice-grid {
  display: grid;
  gap: var(--space-5);
}

.voice {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.voice figcaption {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.voice figcaption img {
  flex: none;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
}

@media (min-width: 900px) {
  .voice-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ==========================================================================
   協賛企業
   ========================================================================== */
.sponsor__viewport {
  overflow-x: auto;
}

.sponsor__viewport.is-running {
  overflow-x: hidden;
  cursor: grab;
  -webkit-touch-callout: none;
  touch-action: pan-y;
  user-select: none;
}

.sponsor__viewport.is-dragging {
  cursor: grabbing;
}

.sponsor__viewport:focus-visible {
  outline-offset: -3px;
}

/* 画像のドラッグや長押しメニューがスライダーの操作を邪魔しないようにする */
.sponsor__viewport.is-running img {
  pointer-events: none;
}

.sponsor__track {
  display: flex;
  gap: var(--space-5);
  width: max-content;
  padding-inline: var(--gutter);
}

.sponsor__viewport.is-running .sponsor__track {
  padding-inline: 0;
  will-change: transform;
}

.sponsor__track li {
  flex: none;
  padding: var(--space-3);
  border-radius: var(--radius);
  background: var(--color-bg);
}

.sponsor__track img {
  width: auto;
  height: var(--logo-h);
}

/* ==========================================================================
   会社概要
   ========================================================================== */
.company-table {
  display: block;
  width: 100%;
  border-collapse: collapse;
}

.company-table tbody,
.company-table tr,
.company-table th,
.company-table td {
  display: block;
}

.company-table tr {
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}

.company-table tr:first-child {
  border-top: 2px solid var(--color-primary);
}

.company-table th {
  margin-bottom: var(--space-1);
  color: var(--color-primary);
  font-size: var(--fs-sm);
  font-weight: 700;
  text-align: left;
}

@media (min-width: 700px) {
  .company-table {
    display: table;
  }

  .company-table tbody {
    display: table-row-group;
  }

  .company-table tr {
    display: table-row;
    padding: 0;
  }

  .company-table th,
  .company-table td {
    display: table-cell;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-line);
    vertical-align: top;
  }

  .company-table tr:first-child th,
  .company-table tr:first-child td {
    border-top: 2px solid var(--color-primary);
  }

  .company-table th {
    width: 11rem;
    margin: 0;
    background: var(--color-bg-soft);
    font-size: var(--fs-base);
  }
}

/* ==========================================================================
   代表メッセージ
   ========================================================================== */
.message {
  display: grid;
  gap: var(--space-6);
}

.message__media img {
  width: 100%;
  max-width: 20rem;
  border-radius: var(--radius);
}

.message__sign {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.message__sign strong {
  color: var(--color-primary);
  font-size: var(--fs-xl);
}

@media (min-width: 900px) {
  .message {
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    align-items: center;
    gap: var(--space-8);
  }

  .message__media img {
    max-width: none;
  }
}

/* ==========================================================================
   お問い合わせ
   ========================================================================== */
.contact-actions {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-7);
}

.contact-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-4);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  color: var(--color-primary);
  line-height: 1.5;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}

.contact-action:hover {
  background: var(--color-primary);
  color: var(--color-on-dark);
}

.contact-action__label {
  font-size: var(--fs-xs);
}

.contact-action__value {
  font-size: var(--fs-lg);
  font-weight: 700;
  overflow-wrap: anywhere;
  text-align: center;
}

.contact-form__note {
  margin-bottom: var(--space-2);
}

.contact-form__fallback {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.contact-form__frame {
  display: block;
  width: 100%;
  height: var(--form-height);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-bg-soft);
}

@media (min-width: 700px) {
  .contact-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ==========================================================================
   フッター
   ========================================================================== */
.site-footer {
  padding-top: var(--space-7);
  background: var(--color-primary-dark);
  color: var(--color-on-dark-muted);
  font-size: var(--fs-sm);
}

.site-footer a {
  color: var(--color-on-dark);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-5);
}

.site-footer__name {
  margin-bottom: var(--space-2);
  color: var(--color-on-dark);
  font-size: var(--fs-lg);
  font-weight: 700;
}

.site-footer__links {
  display: grid;
  gap: var(--space-2);
}

.site-footer__copyright {
  margin-top: var(--space-6);
  padding: var(--space-4) var(--gutter);
  border-top: 1px solid var(--color-line-on-dark);
  text-align: center;
}

@media (min-width: 700px) {
  .site-footer__inner {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

/* ==========================================================================
   プライバシーポリシー・404
   ========================================================================== */
.simple-page {
  padding-block: var(--space-7) var(--section-y);
}

.simple-page__title {
  margin-bottom: var(--space-5);
  font-size: var(--fs-title);
}

.policy h2 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-size: var(--fs-lg);
}

.policy ul {
  margin-top: var(--space-2);
  padding-left: 1.25em;
  list-style: disc;
}

.policy p + p {
  margin-top: var(--space-3);
}

.policy__contact {
  margin-top: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius);
  background: var(--color-bg-soft);
}

.policy__date {
  margin-top: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  text-align: right;
}

.site-header__inner > .button {
  flex: none;
}

.not-found {
  padding-block: var(--space-8);
  text-align: center;
}

.not-found__code {
  color: var(--color-accent);
  font-size: var(--fs-hero);
  font-weight: 700;
  line-height: 1.2;
}

.not-found p {
  margin-bottom: var(--space-5);
}

/* ==========================================================================
   スクロールエフェクト
   .reveal / .reveal-wipe は js/main.js が付けます
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(var(--reveal-distance));
  transition: opacity var(--reveal-duration) var(--reveal-easing), transform var(--reveal-duration) var(--reveal-easing);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* 見出しの線が左から伸びる */
.section-title.reveal::before {
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--reveal-duration) var(--reveal-easing) 0.15s;
}

.section-title.reveal.is-visible::before {
  transform: none;
}

/* 写真が左から現れる */
.reveal-wipe img {
  clip-path: inset(0 100% 0 0);
  transform: scale(1.04);
  transition: clip-path 1.1s var(--reveal-easing), transform 1.4s var(--reveal-easing);
}

.reveal-wipe.is-visible img {
  clip-path: inset(0);
  transform: none;
}

/* 横に並ぶカードは少しずつずらして表示する */
@media (min-width: 700px) {
  .philosophy__values > :nth-child(3n + 2),
  .reason-list > :nth-child(3n + 2),
  .card-grid > :nth-child(3n + 2),
  .voice-grid > :nth-child(3n + 2) {
    transition-delay: var(--reveal-stagger);
  }

  .philosophy__values > :nth-child(3n),
  .reason-list > :nth-child(3n),
  .card-grid > :nth-child(3n),
  .voice-grid > :nth-child(3n) {
    transition-delay: calc(var(--reveal-stagger) * 2);
  }
}

/* メインビジュアルはページを開いたときに表示する（JSなしでも最後は必ず表示される） */
@keyframes hero-rise {
  from {
    opacity: 0;
    transform: translateY(var(--reveal-distance));
  }
}

@keyframes hero-wipe {
  from {
    clip-path: inset(0 0 0 100%);
  }
  to {
    clip-path: inset(0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero__body > * {
    animation: hero-rise var(--reveal-duration) var(--reveal-easing) backwards;
  }

  .hero__title {
    animation-delay: 0.08s;
  }

  .hero__lead {
    animation-delay: 0.16s;
  }

  .hero__actions {
    animation-delay: 0.24s;
  }

  .hero__media img {
    animation: hero-wipe 1.2s var(--reveal-easing) backwards;
  }
}

@media print {
  .reveal,
  .reveal-wipe img {
    clip-path: none;
    opacity: 1;
    transform: none;
  }
}

/* ==========================================================================
   「動きを減らす」設定への対応
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}