/* ==========================================================================
   nvm株式会社 コーポレートサイト
   docs/nvm-design-system.md のトークン・仕様に基づく実装
   ========================================================================== */

/* ---- デザイントークン(docs/nvm-design-system.md 2.1) ---- */
:root {
  /* ブランド(ロゴ由来) */
  --color-blue: #209cd1;
  --color-teal: #20a9bb;
  --color-green: #52b66c;
  --color-yellow: #dccb36;
  --color-logo-gray: #616363;

  /* 文字色として使うための濃い版 */
  --color-blue-dark: #137aa3;   /* リンク・タグライン・青の見出し */
  --color-blue-darker: #0e5c80; /* リンクのhover */
  --color-teal-dark: #0e7c8a;
  --color-green-dark: #2e7d4b;

  /* 領域カードの背景(淡色) */
  --color-blue-tint: #e6f3fa;
  --color-teal-tint: #e3f5f7;
  --color-green-tint: #e7f5eb;

  /* 文字 */
  --color-text: #1e2e35;
  --color-text-sub: #4b5a61;
  --color-text-card: #3d4c53;

  /* 背景・罫線 */
  --color-bg: #ffffff;
  --color-bg-alt: #f6f9fa;
  --color-bg-inquiry: #fbf8e1;
  --color-bg-footer: #1e2e35;
  --color-text-footer: #d5e0e5;
  --color-border: #e1e8ec;
  --color-rule: #d5dfe4;
  --color-chip-border: #c9d6dc;
  --color-input-border: #a9b7be;
  --color-hero-fill: #f2f8fb;

  /* 警告色(課題提起の連鎖図専用。他では使わない) */
  --color-warn-1: #d9482b;
  --color-warn-2: #ee8a76;
  --color-warn-3: #f0b3a6;
  --color-warn-4: #f7d6ce;
  --color-warn-gray: #8a9aa1;

  /* レイアウト(4.1) */
  --container-max: 1200px;
  --container-pad: 48px;

  /* 書体(3.1) */
  --font-base: 'Zen Maru Gothic', 'Hiragino Maru Gothic ProN',
    'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo',
    sans-serif;
}

/* ---- フォント(自サイト配信のサブセット woff2。3.3) ---- */
@font-face {
  font-family: 'Zen Maru Gothic';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/zenmarugothic-400.woff2') format('woff2');
}

@font-face {
  font-family: 'Zen Maru Gothic';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/zenmarugothic-700.woff2') format('woff2');
}

/* ---- リセット・ベース ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-base);
  font-weight: 400;
  line-height: 1.9;
  color: var(--color-text);
  background: var(--color-bg);
}

h1,
h2,
h3,
p,
dl,
dd,
dt,
figure {
  margin: 0;
}

h1,
h2,
h3 {
  font-weight: 700;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-blue-dark);
  text-decoration: none;
}
a:hover {
  color: var(--color-blue-darker);
}

button {
  font-family: inherit;
}

/* フォーカスリング(design-system.md 8.2 の提案を実装) */
:focus-visible {
  outline: 3px solid var(--color-blue-dark);
  outline-offset: 3px;
}

/* ---- レイアウトの土台(4.1) ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
  box-sizing: border-box;
}

/* ---- CTAボタン(5.1) ---- */
.btn-cta {
  display: inline-block;
  background: var(--color-yellow);
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
}
.btn-cta:hover {
  /* design-system.md 5.1: hoverは未定義のため、濃色での提案を実装 */
  background: #cdbc2e;
  color: var(--color-text);
}

.btn-cta--header {
  padding: 12px 28px;
  font-size: 15px;
}

.btn-cta--submit {
  padding: 16px 36px;
  font-size: 16px;
}

/* ---- ヘッダー(4.2, 5.9) ---- */
.site-header {
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  padding-top: 20px;
  padding-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.site-header__logo {
  height: 30px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 15px;
}

.site-nav a:not(.btn-cta) {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-text);
}
.site-nav a:not(.btn-cta):hover {
  color: var(--color-blue-dark);
}

/* ---- フッター(4.2, 5.9) ---- */
.site-footer {
  background: var(--color-bg-footer);
  color: var(--color-text-footer);
}

.site-footer__inner {
  padding-top: 40px;
  padding-bottom: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.site-footer__logo {
  height: 26px;
  width: auto;
}

.site-footer__links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 14px;
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-text-footer);
}
.site-footer a:hover {
  color: #ffffff;
}

/* ==========================================================================
   セクション共通
   ========================================================================== */
.section-alt {
  background: var(--color-bg-alt);
}
.section-inquiry {
  background: var(--color-bg-inquiry);
}
.section-heading {
  font-size: 32px;
}
.lead {
  font-size: 17px;
  color: var(--color-text-sub);
  max-width: 36em;
}
.nowrap {
  white-space: nowrap;
}
.mb-16 {
  margin-bottom: 16px;
}
.mb-24 {
  margin-bottom: 24px;
}
.mb-40 {
  margin-bottom: 40px;
}
.mb-48 {
  margin-bottom: 48px;
}

/* ==========================================================================
   ヒーロー
   ========================================================================== */
.hero {
  padding-top: 96px;
  padding-bottom: 112px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}
.hero__copy {
  min-width: 0;
}
.hero__tagline {
  margin-bottom: 24px;
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--color-blue-dark);
}
.hero__heading {
  margin-bottom: 32px;
  font-size: 64px;
  line-height: 1.4;
}
.hero__lead {
  font-size: 18px;
  max-width: 34em;
  color: var(--color-text-sub);
}
.hero__figure {
  min-width: 0;
  display: flex;
  justify-content: center;
}
.hero__svg {
  display: block;
  width: 100%;
  max-width: 480px;
  height: auto;
}

@media (max-width: 1000px) {
  .hero__heading {
    font-size: 48px;
  }
}
@media (max-width: 640px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero__heading {
    font-size: 40px;
  }
}

/* ==========================================================================
   課題提起(#problem)
   ========================================================================== */
.problem {
  padding-top: 88px;
  padding-bottom: 88px;
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.problem__heading {
  flex: 1 1 400px;
  font-size: 38px;
  line-height: 1.6;
}
.problem__body {
  flex: 1 1 440px;
  font-size: 18px;
  line-height: 2.1;
  color: var(--color-text-sub);
}
.problem__diagram {
  flex: 1 1 100%;
  min-width: 0;
  margin-top: 16px;
}
.problem__diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ==========================================================================
   事業領域(#capability)
   ========================================================================== */
.capability {
  padding-top: 104px;
  padding-bottom: 104px;
}
.capability .lead {
  margin: 12px 0 52px;
}
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
@media (max-width: 1100px) {
  .capability-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.capability-card {
  min-width: 0;
  box-sizing: border-box;
  padding: 36px 32px 40px;
  border-radius: 12px;
  border-top: 6px solid transparent;
}
.capability-card__icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.capability-card__icon svg {
  width: 32px;
  height: 32px;
}
.capability-card h3 {
  margin-bottom: 14px;
  font-size: 22px;
  line-height: 1.4;
}
.capability-card p {
  font-size: 16px;
  color: var(--color-text-card);
}

.capability-card--blue {
  border-top-color: var(--color-blue);
  background: var(--color-blue-tint);
}
.capability-card--blue h3 {
  color: var(--color-blue-dark);
}
.capability-card--teal {
  border-top-color: var(--color-teal);
  background: var(--color-teal-tint);
}
.capability-card--teal h3 {
  color: var(--color-teal-dark);
}
.capability-card--green {
  border-top-color: var(--color-green);
  background: var(--color-green-tint);
}
.capability-card--green h3 {
  color: var(--color-green-dark);
}

/* ==========================================================================
   実績(#works)
   ========================================================================== */
.works {
  padding-top: 96px;
  padding-bottom: 96px;
}
.works h2 {
  margin-bottom: 24px;
}
.works-legend {
  display: flex;
  gap: 8px 28px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  font-size: 14px;
  color: var(--color-text-sub);
}
.works-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.works-legend__dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.works-legend__dot--blue {
  background: var(--color-blue);
}
.works-legend__dot--teal {
  background: var(--color-teal);
}
.works-legend__dot--green {
  background: var(--color-green);
}

.works-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.work-card {
  flex: 1 1 460px;
  min-width: 0;
  box-sizing: border-box;
  padding: 28px 32px 32px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  border-top: 6px solid transparent;
  background: var(--color-bg);
}
.work-card--blue {
  border-top-color: var(--color-blue);
}
.work-card--teal {
  border-top-color: var(--color-teal);
}
.work-card--green {
  border-top-color: var(--color-green);
}
.work-card h3 {
  margin-bottom: 14px;
  font-size: 18px;
  line-height: 1.6;
}
.work-card p {
  font-size: 15.5px;
  color: var(--color-text-sub);
}

.supporters {
  margin-top: 64px;
  box-sizing: border-box;
  padding: 36px 40px;
  border-radius: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}
.supporters h3 {
  margin-bottom: 24px;
  font-size: 20px;
  line-height: 1.5;
}
.supporters__row {
  display: flex;
  gap: 12px 24px;
  flex-wrap: wrap;
  align-items: baseline;
}
.supporters__label {
  flex: 0 0 56px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-sub);
}
.supporters__chips {
  flex: 1 1 400px;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-chip-border);
  background: var(--color-bg-alt);
  font-size: 15px;
}

/* ==========================================================================
   代表者紹介(#profile)
   ========================================================================== */
.profile {
  padding-top: 104px;
  padding-bottom: 104px;
}
.profile h2 {
  margin-bottom: 48px;
}
.profile-intro {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: 56px;
}
.profile-intro__who {
  flex: 0 1 280px;
  min-width: 0;
}
.profile-intro__name {
  font-size: 28px;
  line-height: 1.4;
}
.profile-intro__role {
  margin-top: 4px;
  font-size: 15px;
  color: var(--color-text-sub);
}
.profile-intro__body {
  flex: 1 1 480px;
  font-size: 18px;
  color: var(--color-text-card);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
@media (max-width: 1100px) {
  .strength-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}
.strength-card {
  min-width: 0;
  box-sizing: border-box;
  padding: 32px;
  border-radius: 12px;
  background: var(--color-bg-alt);
}
.strength-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.strength-card__icon svg {
  width: 30px;
  height: 30px;
}
.strength-card h3 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.5;
}
.strength-card p {
  font-size: 15.5px;
  color: var(--color-text-sub);
}

/* ==========================================================================
   会社概要(#information)
   ========================================================================== */
.info-section {
  padding-top: 96px;
  padding-bottom: 96px;
}
.info-section h2 {
  margin-bottom: 40px;
}
.info-table {
  max-width: 880px;
  border-top: 1px solid var(--color-rule);
}
.info-table__row {
  display: flex;
  gap: 8px 32px;
  flex-wrap: wrap;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-rule);
}
.info-table__term {
  flex: 0 0 160px;
  font-weight: 700;
  color: var(--color-text-sub);
}
.info-table__desc {
  flex: 1 1 320px;
}

/* ==========================================================================
   お問い合わせ(#inquiry)
   ========================================================================== */
.inquiry {
  padding-top: 104px;
  padding-bottom: 104px;
}
.inquiry h2 {
  margin-bottom: 40px;
}
.inquiry-form {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-field label {
  font-weight: 700;
  font-size: 15px;
}
.form-field input,
.form-field textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  font-family: inherit;
  border: 1px solid var(--color-input-border);
  border-radius: 6px;
  background: var(--color-bg);
}
.form-actions {
  display: flex;
  align-items: center;
  gap: 20px 28px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* スパム対策のhoneypot欄を、視覚的にのみ隠す(読み上げは抑止し、ボットには残す) */
.form-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   プライバシーポリシー(/privacy/)
   ========================================================================== */
.legal {
  padding-top: 96px;
  padding-bottom: 96px;
}
.legal__content {
  max-width: 760px;
}
.legal h1 {
  font-size: 32px;
  margin-bottom: 40px;
}
.legal h2 {
  font-size: 20px;
  margin-top: 48px;
  margin-bottom: 16px;
}
.legal p + p {
  margin-top: 16px;
}
.legal ul {
  margin: 16px 0;
  padding-left: 1.4em;
}
.legal li + li {
  margin-top: 8px;
}