/* ==========================================================================
   A Lab website — style.css
   Tokens mirror the Figma variables (A-Lab Primitives / Color / Spacing / Typography)
   Figma: https://www.figma.com/design/ntS0tfLXCFCV5VoclH5F0Z/A-Lab
   ========================================================================== */

:root {
  /* A-Lab Color (Light) */
  --alab-color-brand-primary: #3c8cf0;
  --alab-color-brand-strong: #1769e6;
  --alab-color-brand-soft: #a0c8fa;
  --alab-color-brand-pink: #fd6ffe;
  --alab-color-brand-jclaw: #dc3916;
  --alab-color-brand-teal: #358498;
  --alab-color-artwork-violet: #9747ff;
  --alab-color-ink-primary: #1a1a1a;
  --alab-color-ink-secondary: #355c98;
  --alab-color-ink-muted: #90a1b9;
  --alab-color-ink-black: #000000;
  --alab-color-surface-white: #ffffff;
  --alab-color-surface-tint: #eff6ff;
  --alab-color-border-subtle: #d9d9d9;
  --alab-color-border-muted: #94a3b8;
  /* Hero accent used only on the first view */
  --alab-color-accent-cyan: #16ddff;

  /* A-Lab Spacing */
  --alab-spacing-4: 4px;
  --alab-spacing-8: 8px;
  --alab-spacing-10: 10px;
  --alab-spacing-12: 12px;
  --alab-spacing-16: 16px;
  --alab-spacing-20: 20px;
  --alab-spacing-24: 24px;
  --alab-spacing-32: 32px;
  --alab-spacing-40: 40px;
  --alab-spacing-48: 48px;
  --alab-spacing-64: 64px;
  --alab-spacing-80: 80px;
  --alab-spacing-100: 100px;

  /* Radius */
  --alab-radius-8: 8px;
  --alab-radius-16: 16px;
  --alab-radius-24: 24px;
  --alab-radius-32: 32px;
  --alab-radius-48: 48px;
  --alab-radius-80: 80px;

  /* Typography */
  --alab-font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --alab-font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
  --alab-font-product: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;

  /* Effects */
  --alab-shadow-header: 0 4px 8px rgba(224, 225, 230, 0.5);
  --alab-shadow-card: 0 4px 10px rgba(160, 200, 250, 0.3);

  /* Layout (1440 basis) */
  --page-max: 1440px;
  --content-max: 1240px;
  --gutter: clamp(20px, 6.94vw, 100px);
}

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

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

body {
  margin: 0;
  background: var(--alab-color-surface-white);
  color: var(--alab-color-ink-primary);
  font-family: var(--alab-font-jp);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  font-feature-settings: "palt" 1, "pkna" 1;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3, h4, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; }

:focus-visible {
  outline: 2px solid var(--alab-color-brand-strong);
  outline-offset: 2px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.page {
  position: relative;
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  overflow: hidden;
}
/* On viewports wider than 1440px, js/site.js zooms .page so the 1440 layout fills the width. */
html.is-wide body { background: #fff; }
html.is-wide .page { width: 1440px; max-width: none; }

.container {
  width: min(var(--content-max), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

/* --------------------------------------------------------------------------
   Shared components
   -------------------------------------------------------------------------- */

/* Section eyebrow + English title (Figma "ttl") */
.sec-ttl { display: flex; flex-direction: column; align-items: flex-start; }
.sec-ttl__label {
  display: flex; align-items: center; gap: var(--alab-spacing-8);
  color: var(--alab-color-brand-primary);
  font-weight: 700; font-size: 16px; line-height: 1.3;
}
.sec-ttl__label::before {
  content: ""; width: 6px; height: 6px; border-radius: var(--alab-radius-80);
  background: currentColor; flex: none;
}
.sec-ttl__en {
  font-family: var(--alab-font-en); font-weight: 700;
  font-size: 56px; line-height: 1.5; color: var(--alab-color-ink-primary);
}
.sec-ttl--white .sec-ttl__label,
.sec-ttl--white .sec-ttl__en { color: #fff; }

/* Buttons — btn_l (128×46) / btn_m (96×28) */
.btn {
  display: inline-flex; align-items: center; gap: var(--alab-spacing-4);
  border: 1px solid var(--alab-color-ink-primary);
  border-radius: var(--alab-radius-24);
  background: var(--alab-color-surface-white);
  color: var(--alab-color-ink-primary);
  font-weight: 500; line-height: 1; white-space: nowrap;
  transition: background-color .3s ease, color .3s ease;
}
.btn--l { padding: 16px 20px; font-size: 14px; }
.btn--m { padding: 8px 10px; font-size: 12px; }
.btn:hover,
.btn:focus-visible { background: var(--alab-color-ink-primary); color: #fff; }

/* A Lab logo (inline SVG symbol) */
.alab-logo { display: block; width: 113px; height: 56px; }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  position: absolute; inset: 0 0 auto 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; height: 105px;
}
.site-header__logo {
  display: flex; align-items: center; justify-content: center;
  height: 105px; padding: 20px 32px 21px;
  background: #fff;
  border-radius: 0 0 var(--alab-radius-32) var(--alab-radius-32);
  box-shadow: var(--alab-shadow-header);
}
.site-nav { display: flex; align-items: center; gap: var(--alab-spacing-16); }
.site-nav__panel { display: flex; align-items: center; gap: var(--alab-spacing-16); }
.site-nav__group {
  display: flex; align-items: center; gap: var(--alab-spacing-24);
  padding: 16px 24px;
  background: #fff; border-radius: var(--alab-radius-80);
  box-shadow: var(--alab-shadow-header);
}
.site-nav__top {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 8px 12px 8px 8px; border-radius: var(--alab-radius-80);
  background: var(--alab-color-brand-pink); color: #fff;
  font-family: var(--alab-font-en); font-weight: 700; font-size: 16px; line-height: 1;
}
.site-nav__top::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: #fff;
}
.site-nav__list { display: flex; align-items: center; gap: var(--alab-spacing-24); }
.site-nav__list a {
  display: inline-grid; grid-template-columns: 1fr; justify-items: start;
  font-weight: 500; font-size: 14px; line-height: 1;
  white-space: nowrap; padding: 8px 0;
  transition: color .3s ease;
}
.site-nav__list a > span { grid-area: 1 / 1; }
/* nav hover: Bold, footer nav と同色 (brand-strong #1769E6) */
.site-nav__list a:hover,
.site-nav__list a:focus-visible,
.site-nav__list a[aria-current="page"] { color: var(--alab-color-brand-strong); font-weight: 700; }
/* keep the box size stable when the weight changes: an invisible bold copy sits in the same grid cell */
.site-nav__list a::after { content: attr(data-label); grid-area: 1 / 1; visibility: hidden; font-weight: 700; pointer-events: none; }
.site-nav__cta {
  display: inline-flex; align-items: center; gap: var(--alab-spacing-8);
  padding: 24px; border-radius: var(--alab-radius-48);
  background: var(--alab-color-ink-primary); color: #fff;
  font-weight: 700; font-size: 14px; line-height: 1; white-space: nowrap;
  transition: background-color .2s ease;
}
.site-nav__cta:hover { background: var(--alab-color-brand-strong); }
.site-nav__toggle { display: none; }
/* hamburger (mobile only) */
.site-nav__toggle {
  position: relative; width: 48px; height: 48px; border: 0; border-radius: 50%;
  background: #fff; box-shadow: var(--alab-shadow-header); cursor: pointer; padding: 0;
}
.site-nav__toggle span {
  position: absolute; left: 14px; width: 20px; height: 2px; border-radius: 2px;
  background: var(--alab-color-ink-primary); transition: transform .3s ease, opacity .3s ease, top .3s ease;
}
.site-nav__toggle span:nth-child(1) { top: 16px; }
.site-nav__toggle span:nth-child(2) { top: 23px; }
.site-nav__toggle span:nth-child(3) { top: 30px; }
.site-nav.is-open .site-nav__toggle span:nth-child(1) { top: 23px; transform: rotate(45deg); }
.site-nav.is-open .site-nav__toggle span:nth-child(2) { opacity: 0; }
.site-nav.is-open .site-nav__toggle span:nth-child(3) { top: 23px; transform: rotate(-45deg); }

/* --------------------------------------------------------------------------
   First view
   -------------------------------------------------------------------------- */
.fv {
  position: relative; height: 1090px; overflow: hidden;
  background: #0b2a4a;
}
.fv__img {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 1939px; height: 1090px; max-width: none; object-fit: cover;
}
.fv__noise {
  position: absolute; inset: 0; mix-blend-mode: soft-light;
  background-color: #dcfbff;
  background-image: url("../assets/noise.png");
  background-size: 332px 249px;
}
.fv__inner { position: absolute; inset: 0; }
.fv__copy {
  position: absolute; left: var(--gutter); top: 288px;
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--alab-spacing-4);
}
.fv__copy span {
  display: inline-block; padding: 0 8px; background: #fff;
  font-weight: 700; font-size: 56px; line-height: 1.3; white-space: nowrap;
  color: var(--alab-color-ink-primary);
}
.fv__hero {
  position: absolute; left: 31px; top: 533px; margin: 0;
  font-family: var(--alab-font-en); font-weight: 700;
  font-size: 150px; line-height: 0.8; letter-spacing: 0;
  color: var(--alab-color-accent-cyan); white-space: pre;
}
.fv__scroll {
  position: absolute; right: 32px; top: 594px; width: 24px; height: 128px;
  color: #fff;
}
.fv__scroll::before {
  content: ""; position: absolute; left: 0; top: 0; width: 1px; height: 128px; background: #fff;
}
.fv__scroll span {
  position: absolute; left: 24px; top: 0;
  font-family: var(--alab-font-en); font-weight: 700; font-size: 16px; line-height: 1;
  transform: rotate(90deg); transform-origin: left top; white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Body background (wave + blurred white shapes) — Figma body_bg / boke_bg / fade_bg
   -------------------------------------------------------------------------- */
.body-bg {
  position: relative; z-index: 2;
  margin-top: -290px;
  background: #fff;
  border-radius: var(--alab-spacing-64) var(--alab-spacing-64) 0 0;
  overflow: hidden;
}
.body-bg::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3618px; z-index: 0;
  background-image:
    linear-gradient(180deg, #fff 0%, #fff 30%, rgba(255, 255, 255, 0) 100%),
    linear-gradient(180deg, rgba(255,255,255,.62), rgba(255,255,255,.62)),
    url("../assets/wave.jpg");
  background-size: 100% 1200px, 100% 100%, cover;
  background-repeat: no-repeat;
  background-position: top center, top center, center top;
  pointer-events: none;
}
.body-bg::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3618px; z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(closest-side, rgba(255,255,255,.95), rgba(255,255,255,0)) 772px 200px / 1189px 1188px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,.9), rgba(255,255,255,0)) -118px 538px / 506px 506px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,.9), rgba(255,255,255,0)) 1011px 48px / 429px 429px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,.9), rgba(255,255,255,0)) 1091px 865px / 429px 429px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,.9), rgba(255,255,255,0)) 76px 48px / 429px 429px no-repeat,
    /* boke_bg (behind Product Lineup) */
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) 1021px 2914px / 612px 512px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) -60px 2996px / 736px 615px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) 485px 3045px / 516px 431px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) -204px 2914px / 638px 474px no-repeat;
}
.body-bg > * { position: relative; z-index: 1; }

/* --------------------------------------------------------------------------
   Dream
   -------------------------------------------------------------------------- */
.dream { padding-top: 161px; }
.dream__grid {
  display: grid; grid-template-columns: 316px 1fr; align-items: start;
}
.dream__text {
  font-weight: 700; font-size: 20px; line-height: 2.4; padding-top: 44px;
}
.dream__text p + p { margin-top: 0; }
.dream__text .blank { height: 48px; }

/* --------------------------------------------------------------------------
   About (top)
   -------------------------------------------------------------------------- */
.about { padding-top: 144px; }
.about__grid { display: grid; grid-template-columns: 316px 1fr; align-items: start; }
.about__body { position: relative; padding-top: 44px; }
.about__text { font-weight: 700; font-size: 16px; line-height: 2.4; }
.about__text p + p { margin-top: 32px; width: 712px; max-width: 100%; }
.about__character {
  position: absolute; right: -65px; top: 183px; width: 277px; height: 280px;
  overflow: hidden; pointer-events: none;
}
.about__character img { width: 100%; height: 131.89%; object-fit: cover; object-position: top; }

/* op_sec card */
.op-card {
  display: flex; gap: var(--alab-spacing-40); align-items: flex-start;
  margin-top: 221px; padding: var(--alab-spacing-40);
  border: 1px solid #fff; border-radius: var(--alab-radius-16);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  box-shadow: inset 0 0 0 1px transparent;
  transition: background-color .3s ease, border-color .3s ease, box-shadow .3s ease;
}
/* Figma op_sec: ON_HOVER -> hover variant (white 100%, 2px ink stroke, btn_l hover) */
.op-card:hover {
  background: #fff; border-color: var(--alab-color-ink-primary);
  box-shadow: inset 0 0 0 1px var(--alab-color-ink-primary);
}
.op-card:hover .btn { background: var(--alab-color-ink-primary); color: #fff; }
.op-card__img {
  flex: none; align-self: stretch; width: 290px; aspect-ratio: 949 / 917;
  border-radius: var(--alab-radius-8); overflow: hidden;
}
.op-card__img img { width: 108%; height: 112.3%; max-width: none; margin: -4% 0 0 -3%; object-fit: cover; }
.op-card__body { display: flex; flex-direction: column; gap: var(--alab-spacing-24); min-width: 0; }
.op-card__ttl { display: flex; flex-direction: column; }
.op-card__label {
  display: flex; align-items: center; gap: var(--alab-spacing-8);
  color: var(--alab-color-brand-primary); font-weight: 700; font-size: 16px; line-height: 1.3;
}
.op-card__label::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.op-card__h { font-weight: 700; font-size: 24px; line-height: 1.5; }
.op-card__sub { font-weight: 700; font-size: 16px; line-height: 1.5; }
.op-card__text { font-weight: 500; font-size: 14px; line-height: 1.5; }

/* --------------------------------------------------------------------------
   Product Lineup
   -------------------------------------------------------------------------- */
.product { padding-top: 145px; }
.product__head { display: grid; grid-template-columns: 527px 1fr; align-items: start; }
.product__lead { padding-top: 40px; font-weight: 700; font-size: 20px; line-height: 2.4; }
.product__grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 25px; margin-top: 64px;
}
.service-card {
  display: flex; padding: var(--alab-spacing-40);
  background: #fff; border-radius: var(--alab-radius-16);
  box-shadow: var(--alab-shadow-card), inset 0 0 0 0 var(--alab-color-ink-primary);
  transition: box-shadow .3s ease;
}
/* Figma service_01: ON_HOVER -> hover variant (2px ink stroke, shadow off, btn_m hover) */
.service-card:hover {
  box-shadow: 0 0 0 rgba(160, 200, 250, 0), inset 0 0 0 2px var(--alab-color-ink-primary);
}
.service-card:hover .btn { background: var(--alab-color-ink-primary); color: #fff; }
.service-card__body { display: flex; flex-direction: column; gap: var(--alab-spacing-24); flex: 1 1 0; min-width: 0; }
.service-card__name {
  font-family: var(--alab-font-en); font-weight: 900; font-size: 32px; line-height: 1;
  letter-spacing: -0.02em; color: var(--alab-color-brand-primary); white-space: nowrap;
}
.service-card__name--jp { font-family: var(--alab-font-jp); }
.service-card__sub { font-weight: 700; font-size: 16px; line-height: 1.3; }
.service-card__img {
  position: relative; height: 252px; border-radius: var(--alab-radius-8);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.64), rgba(255, 255, 255, 0.64)),
    linear-gradient(180deg, #f8f8f8 0%, #dedede 100%);
  display: flex; align-items: center; justify-content: center;
}
.service-card__img--plain { background: #fff; }
.service-card__img img { width: auto; height: auto; }
.service-card__actions { display: flex; justify-content: flex-end; }

/* --------------------------------------------------------------------------
   About A Lab (diagram)
   -------------------------------------------------------------------------- */
.alab-about { padding-top: 156px; }
.alab-about__inner { width: 1030px; max-width: 100%; margin: 64px 0 0 104px; }
.alab-about__h { font-weight: 700; font-size: 24px; line-height: 2.4; }

.diagram { position: relative; width: 1030px; height: 725px; margin-top: 48px; color: var(--alab-color-ink-secondary); }
.diagram__card {
  position: absolute; left: 0; top: 0; width: 1030px; height: 257px;
  padding: 25px; display: flex; gap: 63px; align-items: flex-start;
  border: 3.34px solid #2b7fff; border-radius: 4.45px;
  background: #fff; box-shadow: 0 0 8.9px rgba(43, 127, 255, 0.08);
}
.diagram__logo { width: 134px; height: 70px; flex: none; }
.diagram__cols { display: flex; gap: 25px; width: 782px; font-weight: 700; }
.diagram__col { display: flex; flex-direction: column; gap: 19px; flex: 1 1 0; min-width: 0; }
.diagram__col--6a { flex: none; width: 235px; gap: 25px; }
.diagram__en { font-family: var(--alab-font-en); font-size: 25px; line-height: normal; }
.diagram__en b, .diagram__row b { color: #1d6de6; font-weight: inherit; }
.diagram__jp { font-size: 25px; line-height: 1.3; }
.diagram__tag { font-family: var(--alab-font-en); font-size: 12.5px; opacity: .9; line-height: normal; }
.diagram__stack { display: flex; flex-direction: column; gap: 12.5px; }
.diagram__rows { display: flex; flex-direction: column; gap: 3px; }
.diagram__row {
  display: flex; gap: 19px; align-items: flex-start; padding-bottom: 6px;
  border-bottom: .8px solid rgba(0, 0, 0, .2);
}
.diagram__row span:first-child { width: 78px; flex: none; font-family: var(--alab-font-en); font-size: 12.5px; }
.diagram__row span:last-child { font-size: 12.5px; line-height: 1.3; white-space: nowrap; }

.diagram__box {
  position: absolute; background: var(--alab-color-surface-tint); border-radius: 4.45px;
  font-weight: 700;
}
.diagram__box-h { font-size: 22px; line-height: 1.3; }
.diagram__box-list { display: flex; gap: 8px; font-size: 15.7px; letter-spacing: .05em; line-height: 1.6; }
.diagram__box-list ul { list-style: disc; padding-left: 24px; }
.diagram__box--global {
  left: 597px; top: 287px; width: 308px; height: 52px; padding: 12.5px;
  display: flex; align-items: center; gap: 19px;
}
.diagram__box--global .diagram__en { font-size: 22px; }
.diagram__box--global span { font-size: 15.7px; letter-spacing: .05em; line-height: 1.6; }
.diagram__box--tech { left: 0; top: 413px; width: 509px; height: 113px; padding: 12.5px; display: flex; flex-direction: column; gap: 8px; }
.diagram__box--biz { left: 521px; top: 413px; width: 509px; height: 113px; padding: 12.5px; display: flex; flex-direction: column; gap: 8px; }
.diagram__box--studio {
  left: 349px; top: 544px; width: 332px; height: 72px; padding: 12.5px 19px 12.5px 12.5px;
  display: flex; align-items: center; gap: 19px;
}
.diagram__box--studio .diagram__box-h { font-size: 22px; }
.diagram__musubi { display: flex; align-items: center; gap: 7px; }
.diagram__musubi img:first-child { width: 47px; height: 47px; }
.diagram__musubi img:last-child { width: 74px; height: 23px; }
.diagram__box--dev {
  left: 0; top: 635px; width: 1030px; height: 91px; padding: 12.5px;
  display: flex; align-items: center; justify-content: center; gap: 12.5px;
}
.diagram__box--dev .alab-logo { width: 81px; height: 42px; }
.diagram__box--dev span { font-size: 22px; line-height: 3; }
.diagram__review {
  position: absolute; left: 534px; top: 294px; width: 71px; padding-bottom: 6px;
  border-bottom: .8px solid rgba(0, 0, 0, .2);
  font-family: var(--alab-font-en); font-weight: 700; font-size: 12.5px; line-height: normal;
}
/* connector lines */
.diagram__line { position: absolute; background: var(--alab-color-ink-black); }
.diagram__line--v { width: 1px; }
.diagram__line--h { height: 1px; }
.diagram__arrow { position: absolute; width: 0; height: 0; border: 4.5px solid transparent; }
.diagram__arrow--down { border-top: 7px solid var(--alab-color-ink-black); border-bottom: 0; }
.diagram__arrow--right { border-left: 7px solid var(--alab-color-ink-black); border-right: 0; }
.diagram__arrow--left { border-right: 7px solid var(--alab-color-ink-black); border-left: 0; }

/* --------------------------------------------------------------------------
   White Paper
   -------------------------------------------------------------------------- */
.whitepaper {
  position: relative; margin-top: 50px; padding: 160px 0 404px; overflow: hidden;
}
/* Figma: 背景(contents_10)は Recruit ボックス上端から 244px 下まで続き、Recruit は背景と白地にまたがる */
.whitepaper::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,.35), rgba(255,255,255,.35)),
    url("../assets/wave.jpg") center / cover no-repeat;
}
.whitepaper::after {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) -420px -475px / 1174px 1172px no-repeat,
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) 489px -820px / 1174px 1172px no-repeat;
}
.whitepaper > .container { position: relative; z-index: 1; }
.whitepaper__grid {
  display: grid; grid-template-columns: repeat(2, 608px); gap: 24px; margin-top: 85px;
}
.wp-card {
  width: 608px; height: 608px; padding: 64px;
  background: #fff; border-radius: var(--alab-radius-16);
  display: flex; flex-direction: column; gap: var(--alab-spacing-32);
  box-shadow: var(--alab-shadow-card), inset 0 0 0 0 var(--alab-color-ink-primary);
  transition: box-shadow .3s ease;
}
/* 共通ホバー（service_01 と同一）: 2px ink 枠・影オフ・内側ボタン黒ベタ */
.wp-card:hover {
  box-shadow: 0 0 0 rgba(160, 200, 250, 0), inset 0 0 0 2px var(--alab-color-ink-primary);
}
.wp-card:hover .btn { background: var(--alab-color-ink-primary); color: #fff; }
.wp-card__head { display: flex; flex-direction: column; }
.wp-card__h { font-weight: 700; font-size: 24px; line-height: 1.5; }
.wp-card__sub { font-weight: 700; font-size: 16px; line-height: 2.4; }
.wp-card__img { width: 480px; height: 269px; border-radius: var(--alab-radius-8); overflow: hidden; }
.wp-card__img img { width: 100%; height: 100%; object-fit: cover; }
.wp-card__actions { display: flex; justify-content: flex-end; }

/* Composite thumbnail for white paper 01 (Figma frame "01") */
.wp-thumb {
  position: relative; width: 480px; height: 269px; color: #fff; text-align: center;
  background: #020618; container-type: inline-size;
}
.wp-thumb__photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.wp-thumb::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(0deg, #020618 0%, rgba(0,0,0,0) 50%),
    linear-gradient(150.6deg, rgba(2,6,24,.9) 0%, rgba(5,47,74,.8) 50%, rgba(2,6,24,.9) 100%);
}
/* sizes in cqw so the composition scales with the card (480px → 1cqw = 4.8px) */
.wp-thumb__text {
  position: absolute; left: 13.1cqw; top: 10.8%; width: 73.8cqw;
  display: flex; flex-direction: column; align-items: center; gap: 2.5cqw;
  font-weight: 900; font-feature-settings: "pwid" 1, "palt" 1;
}
.wp-thumb__event { font-size: 2.9cqw; letter-spacing: .04em; line-height: normal; }
.wp-thumb__kind { font-size: 2.1cqw; letter-spacing: .04em; line-height: normal; }
.wp-thumb__h { font-size: 3.9cqw; letter-spacing: .04em; line-height: normal; }
.wp-thumb__logos {
  position: absolute; left: 36.9cqw; top: 62%; width: 29cqw;
  display: flex; flex-direction: column; align-items: center; gap: 3.3cqw;
}
.wp-thumb__logos .alab-logo { width: 14.1cqw; height: 7cqw; }
.wp-thumb__logos img { width: 29cqw; height: auto; }

/* --------------------------------------------------------------------------
   Recruit
   -------------------------------------------------------------------------- */
.recruit { position: relative; z-index: 1; margin-top: -244px; padding-top: 0; }
.recruit__box {
  padding: var(--alab-spacing-80);
  background: var(--alab-color-brand-primary); border-radius: var(--alab-radius-16);
  color: #fff;
  box-shadow: inset 0 0 0 0 var(--alab-color-ink-primary);
  transition: box-shadow .3s ease;
}
/* 共通ホバー: 2px ink 枠・内側ボタン黒ベタ */
.recruit__box:hover { box-shadow: inset 0 0 0 2px var(--alab-color-ink-primary); }
.recruit__box:hover .btn { background: var(--alab-color-ink-primary); color: #fff; }
.recruit__grid { display: flex; gap: var(--alab-spacing-48); align-items: stretch; }
.recruit__body { display: flex; flex-direction: column; justify-content: space-between; width: 421px; flex: none; }
.recruit__text { margin-top: 48px; font-weight: 700; font-size: 16px; line-height: 1.5; }
.recruit__img { width: 608px; height: 320px; border-radius: var(--alab-radius-8); overflow: hidden; flex: none; }
.recruit__img img { width: 100%; height: 100%; object-fit: cover; object-position: 40% 0; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  display: flex; align-items: flex-end; gap: 233px;
  margin-top: 112px; padding: 64px var(--gutter);
  border-top: 1px solid var(--alab-color-border-muted); background: #fff;
}
.site-footer__brand { display: flex; flex-direction: column; gap: 24px; }
.site-footer__brand .alab-logo { width: 209px; height: 104px; }
.site-footer__powered { display: flex; align-items: flex-end; gap: 8px; height: 16px; }
.site-footer__powered span {
  font-family: var(--alab-font-en); font-weight: 700; font-size: 10px; line-height: 1.5;
}
.site-footer__powered img { width: 225px; height: 15px; }
.site-footer__nav { display: flex; flex-direction: column; gap: 32px; width: 715px; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 24px 32px; font-size: 12px; font-weight: 500; line-height: 1; }
.site-footer__links a:hover { color: var(--alab-color-brand-strong); }
.site-footer__hr { height: 1px; background: var(--alab-color-border-subtle); }
.site-footer__other { display: flex; align-items: center; justify-content: space-between; }
.site-footer__corp {
  display: inline-flex; align-items: center; gap: 10px; padding-bottom: 8px;
  border-bottom: 1px solid var(--alab-color-ink-black); font-size: 12px; line-height: 1;
}
.site-footer__corp span:last-child { font-size: 16px; }
.site-footer__copy { font-family: var(--alab-font-en); font-weight: 500; font-size: 10px; line-height: 1; }

/* --------------------------------------------------------------------------
   Sub pages (placeholder)
   -------------------------------------------------------------------------- */
.sub-hero {
  position: relative; padding: 200px 0 96px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0) 0%, #fff 100%),
    url("../assets/wave.jpg") center / cover no-repeat;
}
.sub-hero__h { font-weight: 700; font-size: 48px; line-height: 1.5; margin-top: 8px; }
.sub-body { padding: 80px 0; font-weight: 500; font-size: 16px; line-height: 2.4; }
.sub-body .btn { margin-top: 32px; }
.breadcrumb { display: flex; gap: 8px; font-size: 12px; line-height: 1; }
.breadcrumb a { color: var(--alab-color-brand-soft); }
.breadcrumb li + li::before { content: "／"; margin-right: 8px; color: var(--alab-color-border-muted); }
.breadcrumb li:last-child { font-weight: 700; }

/* ==========================================================================
   Open Innovation page (Figma 1:2013 "A-Lab_LP_オープンイノベーション_20260422")
   ========================================================================== */
.site-header--sub { height: 165px; align-items: flex-start; }
.site-header--sub .site-nav { margin-top: 21.5px; }
.site-header__breadcrumb {
  position: absolute; left: var(--gutter); top: 125px;
}
.breadcrumb { display: flex; gap: 8px; font-size: 12px; line-height: 1; font-weight: 500; }
.breadcrumb a { color: var(--alab-color-ink-muted); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb li + li::before { content: "／"; margin-right: 8px; color: var(--alab-color-ink-muted); }
.breadcrumb li[aria-current] { color: var(--alab-color-ink-primary); transition: color .3s ease; }
.breadcrumb:hover li[aria-current] { color: var(--alab-color-brand-primary); }

.sec-ttl__label--en { font-family: var(--alab-font-en); }

.oi-hero { position: relative; height: 640px; overflow: visible; }
.oi-hero__bg {
  position: absolute; inset: 0; overflow: hidden;
  background:
    radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) -485px -697px / 1376px 1374px no-repeat,
    linear-gradient(180deg, rgba(255,255,255,.35), rgba(255,255,255,.35)),
    url("../assets/wave.jpg") center / cover no-repeat;
  box-shadow: inset 0 -8px 16px rgba(148, 163, 184, 0.2);
}
.oi-hero__img {
  /* 1440: left 837 / width 398 → anchored from the right so it never overflows on narrower screens */
  position: absolute; right: calc(var(--gutter) + 105px); top: 159px;
  width: clamp(260px, 27.6vw, 398px); height: auto; aspect-ratio: 398 / 385;
  border-radius: var(--alab-radius-8); overflow: hidden;
  box-shadow: inset 0 -8px 16px rgba(148, 163, 184, 0.2);
}
.oi-hero__img img { width: 108%; height: 112.3%; max-width: none; margin: -4% 0 0 -3%; object-fit: cover; }
.oi-hero__ttl {
  position: absolute; left: var(--gutter); top: 284px; width: min(560px, 42vw);
  display: flex; flex-direction: column; gap: 24px;
}
.oi-hero__h { font-weight: 700; font-size: clamp(34px, 3.9vw, 56px); line-height: 1.3; white-space: nowrap; }
.oi-hero__lead { font-weight: 700; font-size: 16px; line-height: 2.4; }
.oi-hero__big {
  position: absolute; left: 32px; top: 511px; z-index: 2;
  font-family: var(--alab-font-en); font-weight: 700; font-size: clamp(72px, 10.4vw, 150px); line-height: 1;
  color: var(--alab-color-accent-cyan); mix-blend-mode: screen; white-space: nowrap;
  pointer-events: none;
}
.oi-hero__img--mobile { display: none; }
.oi-body { position: relative; background: #fff; }

.oi-h2 { font-weight: 700; font-size: 48px; line-height: 1.5; }

.oi-vision { padding: 112px 0; }
.oi-vision__lead {
  margin: 40px 0 0 527px; width: 713px; max-width: 100%;
  font-weight: 500; font-size: 20px; line-height: 2;
}

.oi-tech {
  padding: 128px 0;
  background: linear-gradient(180deg, var(--alab-color-surface-tint) 0%, #fff 100%);
}
.oi-tech__head { display: flex; flex-direction: column; gap: 40px; }
.oi-tech__h { font-weight: 700; font-size: 48px; line-height: 1.5; }
.oi-tech__brand {
  font-family: var(--alab-font-en); font-weight: 900; font-size: 56px; line-height: 1.4;
  letter-spacing: -0.02em; color: var(--alab-color-brand-jclaw);
}
.oi-tech__lead { font-weight: 500; font-size: 16px; line-height: 40px; }
.oi-tech__cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
.tech-card {
  padding: 32px; background: #fff; border-radius: var(--alab-radius-16);
  box-shadow: 0 10px 7.5px rgba(191, 199, 236, 0.1), 0 4px 3px rgba(191, 199, 236, 0.32);
}
.tech-card__icon {
  width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-family: var(--alab-font-en); font-size: 24px; line-height: 36px; color: #0a0a0a;
}
.tech-card__h { margin-top: 24px; font-weight: 700; font-size: 24px; line-height: 27px; }
.tech-card__p { margin-top: 16px; font-weight: 500; font-size: 14px; line-height: 1.5; }
.oi-note {
  margin-top: 48px; padding: 32px; border-radius: var(--alab-radius-16);
  background: var(--alab-color-surface-tint); font-weight: 500; font-size: 16px; line-height: 2;
}

.oi-6a { padding: 0 0 128px; }
.oi-6a__head { display: flex; gap: 137px; align-items: center; }
.oi-6a__head .sec-ttl { flex: none; }
.oi-6a__sub { display: flex; align-items: flex-start; font-weight: 700; font-size: 48px; line-height: 1.5; }
.oi-6a__num { font-family: var(--alab-font-en); font-size: 56px; line-height: 81px; color: #1d6de6; }
.oi-6a__lead { flex: 1 1 0; min-width: 0; font-weight: 500; font-size: 16px; line-height: 40px; }
.sixa { display: flex; flex-direction: column; gap: 16px; margin: 48px 105px 0; }
.sixa__row {
  display: flex; gap: 40px; align-items: stretch; padding-bottom: 16px;
  border-bottom: .8px solid rgba(0, 0, 0, .2);
}
.sixa__term {
  display: flex; align-items: center; width: 400px; flex: none;
  border-right: 1px solid var(--alab-color-border-subtle); color: var(--alab-color-ink-secondary); font-weight: 700; white-space: nowrap;
}
.sixa__en { font-family: var(--alab-font-en); font-size: 32px; line-height: 1.6; color: #1d6de6; }
.sixa__jp { font-size: 20px; line-height: 1.6; }
.sixa__desc { display: flex; align-items: center; gap: 24px; flex: 1 1 0; min-width: 0; margin: 0; }
.sixa__label { width: 200px; flex: none; font-weight: 700; font-size: 18px; line-height: 1.6; color: var(--alab-color-ink-secondary); }
.sixa__text { flex: 1 1 0; font-weight: 500; font-size: 14px; line-height: 1.6; }

.oi-hr { height: 0; margin: 0; border: 0; border-top: 1px solid var(--alab-color-border-subtle); }

.oi-partner { padding: 128px 0; background: linear-gradient(180deg, var(--alab-color-surface-tint) 0%, #fff 100%); }
.oi-partner__lead { margin-top: 40px; font-weight: 700; font-size: 24px; line-height: 27px; }
.partner-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 48px; }
.partner-card {
  min-height: 241px; padding: 40px; border: 1px solid var(--alab-color-border-subtle); border-radius: var(--alab-radius-16);
  background: linear-gradient(156deg, #fff 0%, var(--alab-color-surface-tint) 100%);
}
.partner-card__head { display: flex; align-items: center; gap: 16px; height: 60px; }
.partner-card__icon { font-family: var(--alab-font-en); font-size: 40px; line-height: 60px; }
.partner-card__h { font-weight: 700; font-size: 20px; line-height: 30px; }
.partner-card__p { margin-top: 24px; font-weight: 500; font-size: 14px; line-height: 25.2px; }
.partner-card__tag {
  display: inline-block; margin-top: 16px; padding: 8px 16px; border-radius: 4px;
  background: var(--alab-color-surface-tint); mix-blend-mode: multiply;
  color: var(--alab-color-brand-primary); font-weight: 700; font-size: 12px; line-height: 18px;
}
.oi-cta {
  width: 812px; max-width: 100%; margin: 80px auto 0; padding: 48px;
  background: var(--alab-color-brand-primary); border-radius: var(--alab-radius-16);
  color: #fff; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.oi-cta__h { font-weight: 700; font-size: 32px; line-height: 36px; }
.oi-cta__p { font-weight: 500; font-size: 16px; line-height: 25.2px; }
.oi-cta__btn {
  display: inline-flex; align-items: center; justify-content: center; margin-top: 16px;
  width: 256px; height: 64px; border-radius: var(--alab-radius-48); background: #fff;
  color: #1c398e; font-weight: 700; font-size: 16px; line-height: 24px;
  transition: background-color .2s ease;
}
.oi-cta__btn:hover { background: var(--alab-color-surface-tint); }
.site-footer--flush { margin-top: 0; }

/* ==========================================================================
   Responsive — tablet / smartphone
   Desktop is 1440-first; below 960px the layout collapses to one column and
   every fixed width from the desktop composition is released.
   ========================================================================== */
/* ---- 961px–1439px: laptop / tablet landscape. Release every fixed desktop width. ---- */
@media (max-width: 1439px) {
  .dream__grid, .about__grid { grid-template-columns: minmax(200px, 25.5%) 1fr; }
  .about__text p + p { width: auto; max-width: 712px; }
  .about__character { right: 0; width: clamp(180px, 19vw, 277px); height: auto; aspect-ratio: 277 / 280; top: auto; bottom: calc(100% - 183px - 280px); }
  .op-card__img { width: clamp(220px, 20vw, 290px); }
  .product__head { grid-template-columns: minmax(300px, 42.5%) 1fr; }
  .alab-about__inner { width: auto; max-width: 1030px; margin-left: clamp(0px, 8.4vw, 104px); }
  .diagram-scale { transform-origin: left top; }
  .whitepaper__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wp-card { width: auto; height: auto; }
  .wp-card__img { width: 100%; height: auto; aspect-ratio: 480 / 269; }
  .wp-thumb { width: 100%; height: 100%; }
  .recruit__body { width: clamp(300px, 34vw, 421px); }
  .recruit__img { width: auto; flex: 1 1 0; height: auto; aspect-ratio: 608 / 320; }
  .site-footer { gap: clamp(40px, 8vw, 233px); }
  .site-footer__nav { width: auto; flex: 1 1 0; }
  /* Open Innovation */
  .oi-vision__lead { margin-left: clamp(0px, 42.5%, 527px); width: auto; max-width: 713px; }
  .oi-6a__head { gap: clamp(40px, 9.5vw, 137px); }
  .oi-6a__head .sec-ttl { flex: 0 1 auto; }
  .sixa { margin-left: clamp(0px, 8.4vw, 105px); margin-right: clamp(0px, 8.4vw, 105px); }
  .sixa__term { width: clamp(280px, 38%, 400px); }
}
@media (max-width: 1200px) {
  .sec-ttl__en { font-size: clamp(40px, 4.6vw, 56px); }
  .oi-h2, .oi-tech__h { font-size: clamp(34px, 4vw, 48px); }
  .dream__text, .product__lead { font-size: clamp(16px, 1.7vw, 20px); }
  .sixa__term { flex-wrap: wrap; white-space: normal; }
  .sixa__en { font-size: clamp(24px, 2.7vw, 32px); }
  .sixa__label { width: 160px; }
}

@media (max-width: 960px) {
  :root { --gutter: 20px; }
  .page { overflow-x: hidden; }

  /* ---- header + drawer menu ---- */
  .site-header { height: 88px; padding: 0 12px; }
  .site-header__logo { height: 88px; padding: 16px 20px; border-radius: 0 0 24px 24px; }
  .alab-logo { width: 90px; height: 45px; }
  .site-nav { position: static; }
  .site-nav__toggle { display: block; margin-top: 20px; z-index: 3; }
  .site-header__logo { position: relative; z-index: 3; }
  .site-nav__panel {
    position: fixed; inset: 0; z-index: 2;
    display: flex; flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0;
    padding: 112px 24px 32px; background: #fff;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .3s ease, transform .3s ease, visibility 0s linear .3s;
    overflow-y: auto;
  }
  .site-nav.is-open .site-nav__panel {
    opacity: 1; visibility: visible; transform: none;
    transition: opacity .3s ease, transform .3s ease, visibility 0s;
  }
  .site-nav__group { display: block; padding: 0; background: none; border-radius: 0; box-shadow: none; }
  .site-nav__list { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__list li { border-bottom: 1px solid var(--alab-color-border-subtle); }
  .site-nav__list a {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 4px; font-size: 18px; font-weight: 700; line-height: 1;
  }
  .site-nav__list a > span { grid-area: auto; }
  .site-nav__list a::after { content: "→"; grid-area: auto; visibility: visible; font-family: var(--alab-font-en); color: var(--alab-color-ink-muted); pointer-events: auto; }
  .site-nav__list a:hover::after, .site-nav__list a:focus-visible::after { color: var(--alab-color-brand-strong); }
  .site-nav__cta { display: flex; justify-content: center; margin-top: 32px; padding: 22px 24px; font-size: 16px; }
  .site-nav__panel .breadcrumb { display: none; }
  body.menu-open { overflow: hidden; }
  .site-header--sub { height: 88px; }
  .site-header--sub .site-nav { margin-top: 0; }
  .site-header__breadcrumb { top: 104px; left: var(--gutter); }

  /* ---- first view: keep the shadow figure in frame ---- */
  .fv { height: 640px; }
  .fv__img { left: 0; transform: none; width: 100%; height: 100%; object-fit: cover; object-position: 46% 40%; }
  .fv__copy { top: 132px; left: var(--gutter); }
  .fv__copy span { font-size: clamp(24px, 6.6vw, 40px); padding: 0 6px; }
  .fv__hero { left: var(--gutter); top: auto; bottom: 128px; font-size: clamp(40px, 11.5vw, 80px); }
  .fv__scroll { display: none; }
  .body-bg { margin-top: -80px; border-radius: 32px 32px 0 0; }
  .body-bg::before, .body-bg::after { height: 100%; background-size: 100% 600px, 100% 100%, cover; }
  .body-bg::after {
    background:
      radial-gradient(closest-side, rgba(255,255,255,.95), rgba(255,255,255,0)) 40% 260px / 620px 620px no-repeat,
      radial-gradient(closest-side, rgba(255,255,255,1), rgba(255,255,255,0)) 60% 1900px / 560px 480px no-repeat;
  }

  /* ---- sections ---- */
  .sec-ttl__en { font-size: 40px; }
  .dream { padding-top: 80px; }
  .dream__grid, .about__grid, .product__head { grid-template-columns: 1fr; gap: 24px; }
  .dream__text, .about__body, .product__lead { padding-top: 0; }
  .dream__text { font-size: 16px; line-height: 2; }
  .dream__text .blank { height: 24px; }
  .about { padding-top: 96px; }
  .about__text { font-size: 15px; line-height: 2; }
  .about__text p + p { width: auto; margin-top: 24px; }
  .about__character { position: static; width: 160px; height: 160px; margin: 24px 0 0 auto; }
  .op-card { flex-direction: column; gap: 24px; margin-top: 48px; padding: 24px; }
  .op-card__img { width: 100%; align-self: auto; aspect-ratio: 4 / 3; }
  .op-card__img img { width: 108%; height: 112.3%; margin: -4% 0 0 -3%; }
  .op-card__h { font-size: 22px; }
  .product { padding-top: 96px; }
  .product__lead { font-size: 16px; line-height: 2; }
  .product__grid { grid-template-columns: 1fr; gap: 20px; margin-top: 40px; }
  .service-card { padding: 24px; }
  .service-card__name { font-size: 26px; white-space: normal; }
  .service-card__img { height: auto; aspect-ratio: 528 / 252; }
  .service-card__img img { max-width: 78%; height: auto; }

  /* About A Lab diagram: vertical stack instead of the connector layout */
  .alab-about { padding-top: 96px; }
  .alab-about__inner { width: auto; margin: 32px 0 0; }
  .alab-about__h { font-size: 20px; }
  .diagram { position: static; width: auto; height: auto; margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
  .diagram__card { position: static; width: auto; height: auto; flex-direction: column; gap: 24px; padding: 24px; }
  .diagram__logo { width: 96px; height: 50px; }
  .diagram__cols { flex-direction: column; width: auto; gap: 24px; }
  .diagram__col--6a { width: auto; }
  .diagram__jp { font-size: 20px; }
  .diagram__line, .diagram__arrow, .diagram__review { display: none; }
  .diagram__box { position: static; width: auto; height: auto; }
  .diagram__box--global, .diagram__box--tech, .diagram__box--biz, .diagram__box--studio, .diagram__box--dev { left: auto; top: auto; width: auto; height: auto; padding: 16px; }
  .diagram__box--dev { justify-content: flex-start; }
  .diagram__box--dev span { line-height: 1.6; }
  .diagram__box-list { flex-direction: column; gap: 0; }
  .diagram__row span:last-child { white-space: normal; }

  /* White paper */
  .whitepaper { margin-top: 64px; padding: 96px 0 184px; }
  .whitepaper__grid { grid-template-columns: 1fr; gap: 20px; margin-top: 40px; }
  .wp-card { padding: 24px; gap: 24px; }
  .wp-card__h { font-size: 20px; }
  .wp-card__sub { line-height: 1.8; }
  .wp-card__img { width: 100%; height: auto; aspect-ratio: 480 / 269; }
  .wp-thumb { width: 100%; height: 100%; }

  /* Recruit */
  .recruit { margin-top: -120px; }
  .recruit__box { padding: 32px 24px; }
  .recruit__grid { flex-direction: column; gap: 32px; }
  .recruit__body { width: auto; gap: 32px; }
  .recruit__text { margin-top: 24px; }
  .recruit__img { width: 100%; height: auto; aspect-ratio: 608 / 320; }

  /* Footer */
  .site-footer { flex-direction: column; align-items: flex-start; gap: 40px; margin-top: 64px; padding: 48px var(--gutter); }
  .site-footer__brand .alab-logo { width: 150px; height: 75px; }
  .site-footer__powered img { width: 180px; height: auto; }
  .site-footer__nav { width: 100%; }
  .site-footer__links { gap: 16px 24px; }
  .site-footer__other { flex-direction: column; align-items: flex-start; gap: 24px; }

  /* ---- Open Innovation page ---- */
  .oi-hero { height: auto; padding: 150px 0 40px; }
  .oi-hero__bg { position: absolute; }
  .oi-hero__img { position: relative; z-index: 1; left: auto; right: auto; top: auto; width: min(100% - var(--gutter) * 2, 400px); height: auto; aspect-ratio: 398 / 385; margin: 0 auto 32px; }
  .oi-hero__ttl { position: relative; z-index: 1; top: auto; left: auto; width: auto; padding: 0 var(--gutter); gap: 16px; }
  .oi-hero__h { font-size: clamp(28px, 8vw, 40px); white-space: normal; }
  .oi-hero__lead { line-height: 1.8; }
  .oi-hero__big { position: relative; z-index: 1; top: auto; left: auto; display: block; margin: 24px 0 0; padding: 0 var(--gutter); font-size: clamp(32px, 11.5vw, 72px); mix-blend-mode: normal; color: var(--alab-color-accent-cyan); opacity: .55; overflow: hidden; }
  .oi-hero__bg .oi-hero__img { display: none; }
  .oi-hero__img--mobile { display: block; }
  .oi-h2, .oi-tech__h { font-size: 30px; }
  .oi-tech__brand { font-size: 40px; }
  .oi-vision { padding: 64px 0; }
  .oi-vision__lead { margin: 24px 0 0; width: auto; font-size: 16px; line-height: 2; }
  .oi-tech, .oi-partner { padding: 80px 0; }
  .oi-tech__lead, .oi-6a__lead { line-height: 2; }
  .oi-tech__cards, .partner-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 32px; }
  .tech-card { padding: 24px; }
  .oi-note { margin-top: 32px; padding: 24px; line-height: 1.9; }
  .oi-6a { padding-bottom: 80px; }
  .oi-6a__head { flex-direction: column; align-items: flex-start; gap: 24px; }
  .oi-6a__sub { font-size: 30px; }
  .oi-6a__num { font-size: 40px; line-height: 1.2; }
  .sixa { margin: 32px 0 0; gap: 12px; }
  .sixa__row { flex-direction: column; gap: 8px; }
  .sixa__term { width: auto; border-right: 0; white-space: normal; flex-wrap: wrap; }
  .sixa__en { font-size: 28px; }
  .sixa__jp { font-size: 16px; }
  .sixa__desc { flex-direction: column; align-items: flex-start; gap: 4px; }
  .sixa__label { width: auto; }
  .oi-partner__lead { font-size: 20px; line-height: 1.5; }
  .partner-card { min-height: 0; padding: 24px; }
  .oi-cta { margin-top: 48px; padding: 32px 24px; }
  .oi-cta__h { font-size: 24px; line-height: 1.4; }
  .oi-cta__btn { width: 100%; max-width: 320px; }
}

@media (max-width: 600px) {
  .service-card__sub, .op-card__sub { font-size: 15px; }
  .fv { height: 600px; }
}