@charset "UTF-8";
/* ==========================================================================
   ALPHAZ — main stylesheet
   --------------------------------------------------------------------------
   目次
     01. Custom properties (design tokens)
     02. Base / reset
     03. Layout utilities
     04. Components — button
     05. Components — header / global nav
     06. Sections — common
     07. Sections — hero
     08. Sections — mission
     09. Sections — service
     10. Sections — numbers
     11. Sections — company
     12. Sections — recruit
     13. Footer
     14. Sub pages (index / 404)
     15. Accessibility / print
   --------------------------------------------------------------------------
   カラー: ALPHAZ ロゴガイドライン (MINIMUM BRAND STANDARD / 2026) 準拠。
     ALPHA YELLOW #F2EF00 / REAL BLACK #0A0A0A / HUMAN WHITE #F7F7F3
   命名規則: BEM ライク（block__element--modifier）。
   ブレークポイント: 900px（タブレット以下）／600px（スマホ）。
   ========================================================================== */

/* ==========================================================================
   01. Custom properties
   ========================================================================== */

:root {
  /* Color */
  --c-black: #0a0a0a;          /* REAL BLACK */
  --c-black-deep: #050505;
  --c-black-soft: #1e1e1e;
  --c-yellow: #f2ef00;         /* ALPHA YELLOW */
  --c-yellow-deep: #767400;    /* 明色背景の小さい文字用（白地で4.9:1・WCAG AA） */
  --c-bg: #ffffff;
  --c-bg-gray: #f7f7f3;        /* HUMAN WHITE */
  --c-text: #1a1a1a;
  --c-text-muted: #5a5a58;
  --c-line: #e2e2dc;
  --c-white: #ffffff;

  /* Typography */
  --font-ja: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic",
    "Noto Sans JP", Meiryo, sans-serif;
  --font-en: "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --wrap-max: 1100px;
  --wrap-pad: clamp(1.25rem, 4vw, 2.5rem);
  --header-h: 72px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ==========================================================================
   02. Base / reset
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* 固定ヘッダー分だけアンカー位置をずらす */
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-ja);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
p,
figure,
dl,
dd {
  margin: 0;
}

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

a {
  color: inherit;
}

img,
svg {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

/* ==========================================================================
   03. Layout utilities
   ========================================================================== */

.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--wrap-pad);
}

/* ==========================================================================
   04. Components — button
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85rem 1.9rem;
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  letter-spacing: 0.02em;
  border: 2px solid var(--c-black);
  background: var(--c-black);
  color: var(--c-white);
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn:hover,
.btn:focus-visible {
  background: var(--c-yellow);
  border-color: var(--c-yellow);
  color: var(--c-black);
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--c-yellow);
  border-color: var(--c-yellow);
  color: var(--c-black);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--c-white);
  border-color: var(--c-white);
  color: var(--c-black);
}

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: var(--c-white);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--c-white);
  border-color: var(--c-white);
  color: var(--c-black);
}

.btn--sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.82rem;
}

.btn--lg {
  padding: 1.05rem 2.6rem;
  font-size: 1rem;
}

/* ==========================================================================
   05. Components — header / global nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow 0.25s var(--ease);
}

.site-header.is-scrolled {
  box-shadow: 0 2px 14px rgba(23, 23, 26, 0.08);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  max-width: var(--wrap-max);
  min-height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--wrap-pad);
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  text-decoration: none;
}

.logo__mark {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--c-black);
}

.logo__mark--light {
  color: var(--c-white);
}

.logo__corp {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--c-text-muted);
}

.gnav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.gnav__link {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.4rem 0;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.gnav__link:hover,
.gnav__link:focus-visible {
  border-bottom-color: var(--c-yellow);
}

.gnav__en {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--c-yellow-deep);
}

.gnav__ja {
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
}

/* --- Mobile nav toggle --- */

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  margin-right: -8px;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  margin-inline: auto;
  background: var(--c-black);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.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);
}

@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .gnav {
    position: absolute;
    inset: var(--header-h) 0 auto 0;
    display: none;
    background: var(--c-white);
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 12px 24px rgba(23, 23, 26, 0.08);
  }

  .gnav.is-open {
    display: block;
  }

  .gnav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem var(--wrap-pad) 1.5rem;
  }

  .gnav__item {
    border-bottom: 1px solid var(--c-line);
  }

  .gnav__item--cta {
    border-bottom: 0;
    padding-top: 1.25rem;
  }

  .gnav__link {
    flex-direction: row;
    align-items: baseline;
    gap: 0.75rem;
    padding: 1rem 0;
    border-bottom: 0;
  }
}

/* ==========================================================================
   06. Sections — common
   ========================================================================== */

.section {
  padding-block: clamp(3.5rem, 9vw, 7rem);
}

.section--service,
.section--recruit {
  background: var(--c-bg-gray);
}

.section--numbers {
  background: linear-gradient(
    135deg,
    var(--c-black-deep) 0%,
    var(--c-black) 60%,
    var(--c-black-soft) 100%
  );
  color: var(--c-white);
}

.section__head {
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
}

.section__en {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  line-height: 1;
  color: var(--c-yellow-deep);
}

.section__head--light .section__en {
  color: var(--c-yellow);
}

.section__title {
  position: relative;
  margin-top: 0.9rem;
  padding-bottom: 0.9rem;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.section__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 4px;
  background: var(--c-yellow);
}

/* ==========================================================================
   07. Sections — hero
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--c-black-deep) 0%,
    var(--c-black) 55%,
    var(--c-black-soft) 100%
  );
  color: var(--c-white);
}

/* 右上の斜めストライプ（装飾） */
.hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -30%;
  width: 55%;
  height: 160%;
  pointer-events: none;
  background:
    linear-gradient(
      115deg,
      transparent 0 42%,
      rgba(242, 239, 0, 0.1) 42% 58%,
      transparent 58%
    ),
    linear-gradient(
      115deg,
      transparent 0 62%,
      rgba(242, 239, 0, 0.18) 62% 74%,
      transparent 74%
    );
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding: clamp(4.5rem, 11vw, 8.5rem) var(--wrap-pad);
}

.hero__en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.26em;
  line-height: 1;
  color: var(--c-yellow);
}

.hero__title {
  margin-top: 1.6rem;
  font-size: clamp(1.9rem, 5.6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.45;
}

.hero__lead {
  max-width: 34em;
  margin-top: 1.75rem;
  font-size: clamp(0.94rem, 1.6vw, 1.02rem);
  color: rgba(255, 255, 255, 0.82);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.5rem;
}

/* ==========================================================================
   08. Sections — mission
   ========================================================================== */

.mission__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: start;
}

@media (max-width: 900px) {
  .mission__body {
    grid-template-columns: 1fr;
  }
}

.mission__statement {
  font-size: clamp(1.25rem, 2.8vw, 1.75rem);
  font-weight: 700;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

.mission__text {
  color: var(--c-text-muted);
}

/* ==========================================================================
   09. Sections — service
   ========================================================================== */

.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .service__grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  padding: 2rem 1.75rem 2.25rem;
  background: var(--c-white);
  border-top: 4px solid var(--c-yellow);
  box-shadow: 0 2px 8px rgba(23, 23, 26, 0.07);
}

.service-card__no {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  line-height: 1;
  color: var(--c-yellow-deep);
}

.service-card__title {
  margin: 0.75rem 0 1rem;
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.6;
}

.service-card__text {
  font-size: 0.92rem;
  color: var(--c-text-muted);
}

/* ==========================================================================
   10. Sections — numbers
   ========================================================================== */

.numbers__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}

@media (max-width: 700px) {
  .numbers__grid {
    grid-template-columns: 1fr;
  }
}

.numbers__item {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.numbers__label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.7);
}

.numbers__value {
  margin-top: 0.4rem;
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 2.9rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.15;
  color: var(--c-yellow);
}

.numbers__note {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   11. Sections — company
   ========================================================================== */

.company__list {
  border-top: 1px solid var(--c-line);
}

.company__row {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 0 1.5rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--c-line);
}

@media (max-width: 700px) {
  .company__row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
    padding: 1rem 0;
  }
}

.company__label {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.company__value {
  font-size: 0.94rem;
  color: var(--c-text-muted);
}

.company__value a {
  color: var(--c-text);
  text-decoration-color: var(--c-yellow);
  text-underline-offset: 0.25em;
  text-decoration-thickness: 2px;
}

/* ==========================================================================
   12. Sections — recruit
   ========================================================================== */

.recruit__body {
  max-width: 44em;
}

.recruit__text {
  color: var(--c-text-muted);
}

.recruit__actions {
  margin-top: 2rem;
}

/* ==========================================================================
   13. Footer
   ========================================================================== */

.site-footer {
  padding-block: clamp(2.75rem, 6vw, 4rem) 1.5rem;
  background: var(--c-black-deep);
  color: rgba(255, 255, 255, 0.75);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--wrap-pad);
}

.site-footer__corp {
  margin-top: 0.65rem;
  font-size: 0.85rem;
}

.site-footer__addr {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
}

.site-footer__nav ul {
  display: grid;
  gap: 0.55rem;
}

.site-footer__nav a {
  font-size: 0.86rem;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: var(--c-yellow);
}

.site-footer__copy {
  max-width: var(--wrap-max);
  margin: 2.5rem auto 0;
  padding: 1.25rem var(--wrap-pad) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   14. Sub pages (index / 404)
   ========================================================================== */

.site-main--sub {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.entry__title {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.5;
}

.entry__body {
  margin-top: 1.75rem;
}

.entry__body > * + * {
  margin-top: 1.25rem;
}

.error-404 .btn {
  margin-top: 1.75rem;
}

/* ==========================================================================
   15. Accessibility / print
   ========================================================================== */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 0.75rem 1.25rem;
  background: var(--c-yellow);
  color: var(--c-black);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
}

:where(a, button, [tabindex]):focus-visible {
  outline: 3px solid var(--c-yellow);
  outline-offset: 3px;
}

/* WordPress 標準のスクリーンリーダー用クラス */
.screen-reader-text {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media print {
  .site-header,
  .site-footer__nav,
  .nav-toggle,
  .btn {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }
}