/* OZ. v3 ホームページ — モバイル優先のブランド設計 */
:root {
  color-scheme: light;
  --ink: #08224a;
  --ink-soft: #27415f;
  --muted: #5b6e85;
  --blue: #1267d6;
  --blue-deep: #0a4fa8;
  --sky: #eaf4ff;
  --sky-soft: #f5faff;
  --red: #df2d32;
  --red-hover: #bd2228;
  --paper: #fff;
  --line: #dbe6f2;
  --line-strong: #c6d6e8;
  --serif: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --sans: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --container: 1240px;
  --gutter: 48px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.is-menu-open { overflow: hidden; }
img, picture, svg { display: block; }
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
::selection { color: var(--ink); background: #c9e1ff; }

.v3-container { width: min(calc(100% - var(--gutter)), var(--container)); margin-inline: auto; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.v3-eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font: 700 11px/1.4 var(--sans);
  letter-spacing: .19em;
}
.v3-eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  margin: 0 11px 4px 0;
  background: currentColor;
}

.v3-button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.v3-button:hover { transform: translateY(-2px); }
.v3-button--primary { color: #fff; background: var(--red); }
.v3-button--primary:hover { color: #fff; background: var(--red-hover); }
.v3-button--outline { color: var(--ink); background: rgba(255,255,255,.88); border-color: var(--line-strong); }
.v3-button--outline:hover { color: var(--blue-deep); background: #fff; border-color: var(--blue); }
.v3-button--header { min-height: 46px; padding-inline: 21px; color: #fff; background: var(--red); font-size: 13px; }
.v3-button--header:hover { color: #fff; background: var(--red-hover); }
.v3-text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 11px;
  border-bottom: 1px solid var(--line-strong);
  font-size: 13px;
  font-weight: 700;
  transition: color .2s ease, gap .2s ease, border-color .2s ease;
}
.v3-text-link:hover { gap: 16px; color: var(--blue); border-color: var(--blue); }

.v3-header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid rgba(219,230,242,.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: box-shadow .2s ease;
}
.v3-header.is-scrolled { box-shadow: 0 8px 26px rgba(8,34,74,.08); }
.v3-header__inner { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.v3-brand { display: inline-flex; min-width: 0; align-items: center; gap: 10px; }
.v3-brand img { width: 68px; height: auto; flex: 0 0 auto; }
.v3-brand__meta { display: flex; flex-direction: column; gap: 3px; color: var(--muted); font: 700 8px/1.1 var(--sans); letter-spacing: .14em; }
.v3-header__actions { display: flex; align-items: center; gap: 10px; }
.v3-nav { display: none; }
.v3-menu {
  display: flex;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
}
.v3-menu span { display: block; width: 18px; height: 1px; background: var(--ink); transition: transform .2s ease; }
.v3-menu[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.v3-menu[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
.v3-mobile-nav {
  /* The sticky header's backdrop-filter creates a containing block for fixed
     descendants. Keep the panel anchored just below the header and size it to
     the remaining viewport so the full menu is visible and scrollable. */
  position: absolute;
  z-index: 49;
  inset: 100% 0 auto;
  height: calc(100vh - 72px);
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 24px 24px max(36px, env(safe-area-inset-bottom));
  background: #fff;
  clip-path: inset(0 0 100% 0);
  opacity: 0;
  transform: translateY(-14px);
  transform-origin: top center;
  visibility: hidden;
  pointer-events: none;
  transition: clip-path .52s cubic-bezier(.22,1,.36,1), opacity .34s ease,
    transform .52s cubic-bezier(.22,1,.36,1), visibility 0s linear .52s;
}
@supports (height: 100dvh) {
  .v3-mobile-nav {
    height: calc(100dvh - 72px);
    max-height: calc(100dvh - 72px);
  }
}
.v3-mobile-nav.is-open {
  clip-path: inset(0);
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}
.v3-mobile-nav__eyebrow { margin: 0 0 12px; color: var(--blue); font: 700 10px/1.3 var(--sans); letter-spacing: .18em; }
.v3-mobile-nav a {
  display: flex;
  min-height: 54px;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-weight: 700;
}
.v3-mobile-nav a > span:first-child { width: 22px; color: var(--blue); font: 600 10px/1 var(--sans); }
.v3-mobile-nav a.v3-mobile-nav__cta {
  min-height: 52px;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
  padding-inline: 20px;
  color: #fff;
  border: 0;
  border-radius: 999px;
  background: var(--red);
}
.v3-mobile-nav a.v3-mobile-nav__cta > span:first-child { width: auto; color: inherit; font: inherit; }

.v3-ticker { overflow: hidden; padding-block: 9px; color: #fff; background: var(--ink); }
.v3-ticker__viewport { overflow: hidden; }
.v3-ticker__track { display: flex; width: max-content; align-items: center; gap: 38px; animation: v3-ticker-loop 38s linear infinite; white-space: nowrap; }
.v3-ticker__item { display: inline-flex; align-items: center; gap: 10px; color: #fff; font: 600 10px/1.4 var(--sans); letter-spacing: .08em; }
.v3-ticker__item b { color: #9ccaff; font-size: 8px; letter-spacing: .15em; }
.v3-ticker:hover .v3-ticker__track { animation-play-state: paused; }
@keyframes v3-ticker-loop { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.v3-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; clip-path: inset(50%); }

.home-hero {
  position: relative;
  min-height: clamp(690px, calc(100svh - 72px), 900px);
  overflow: hidden;
  background: #fff;
  isolation: isolate;
}
.home-hero__visual { position: absolute; z-index: -2; inset: 0 0 0 17%; overflow: hidden; margin: 0; }
.home-hero__visual picture { width: 100%; height: 100%; }
.home-hero__visual img { width: 100%; height: 100%; object-fit: cover; object-position: 63% 52%; filter: saturate(.82); }
.home-hero__visual::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, #fff 0%, rgba(255,255,255,.97) 22%, rgba(255,255,255,.83) 39%, rgba(255,255,255,.24) 67%, rgba(255,255,255,0) 100%),
    linear-gradient(0deg, #fff 0%, rgba(255,255,255,0) 29%);
}
.home-hero__rings {
  position: absolute;
  z-index: -1;
  top: -220px;
  right: 5%;
  width: clamp(340px, 48vw, 650px);
  aspect-ratio: 1;
  border: 1px solid rgba(18,103,214,.17);
  border-radius: 50%;
  pointer-events: none;
}
.home-hero__rings::before, .home-hero__rings::after {
  position: absolute;
  inset: 12%;
  content: "";
  border: 1px solid rgba(18,103,214,.15);
  border-radius: 50%;
}
.home-hero__rings::after { inset: 27%; }
.home-hero__network { position: absolute; z-index: -1; right: -8%; bottom: 5%; width: min(62vw, 760px); color: rgba(18,103,214,.56); opacity: .4; pointer-events: none; }
.home-hero__inner { position: relative; display: flex; min-height: inherit; flex-direction: column; justify-content: center; padding-block: 72px 76px; }
.home-hero__copy { max-width: 670px; }
.home-hero__pre { margin: 0 0 20px; color: var(--ink-soft); font-size: clamp(14px,1.1vw,17px); font-weight: 600; line-height: 1.7; }
.home-hero h1 { margin: 0; font-size: clamp(58px,6vw,88px); font-weight: 800; line-height: 1.18; letter-spacing: -.055em; }
.home-hero h1 span { display: block; color: var(--blue); }
.home-hero__lead { max-width: 590px; margin: 24px 0 0; color: var(--ink-soft); font-size: clamp(16px,1.3vw,19px); line-height: 1.85; }
.home-hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 30px; }
.home-hero__actions .v3-button { min-width: 222px; }
.home-hero__scroll { position: absolute; bottom: 22px; left: 0; display: flex; align-items: center; gap: 10px; color: var(--muted); font: 600 9px/1 var(--sans); letter-spacing: .18em; }
.home-hero__scroll i { width: 42px; height: 1px; background: var(--line-strong); }
.desktop-only { display: none; }

.brand-statement { position: relative; overflow: hidden; padding-block: 104px 112px; }
.brand-statement__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "heading" "body";
  gap: 28px;
}
.brand-statement__heading { position: relative; z-index: 1; grid-area: heading; max-width: 80%; }
.brand-statement h2 { margin: 0; font-size: clamp(37px,9.7vw,58px); font-weight: 800; line-height: 1.35; letter-spacing: -.05em; }
.brand-statement h2 span { white-space: nowrap; }
.brand-statement__body { position: relative; z-index: 1; grid-area: body; max-width: 78%; }
.brand-statement__body p { margin: 0 0 16px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.brand-statement__body .brand-statement__lead { margin-bottom: 12px; color: var(--ink); font-size: 20px; font-weight: 700; line-height: 1.65; }
.brand-statement__body .v3-text-link { margin-top: 3px; }
.brand-statement__visual { position: absolute; z-index: 0; top: 12%; right: -31%; bottom: 8%; width: 78%; overflow: hidden; margin: 0; clip-path: ellipse(48% 49% at 66% 50%); pointer-events: none; }
.brand-statement__visual::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg,#fff 0%,rgba(255,255,255,.88) 25%,rgba(255,255,255,.26) 59%,rgba(255,255,255,0) 100%); }
.brand-statement__visual picture { display: block; width: 100%; height: 100%; }
.brand-statement__visual img { width: 100%; height: 100%; object-fit: cover; object-position: 48% center; }
.brand-statement__visual figcaption { position: absolute; z-index: 1; right: 2%; bottom: 13%; display: flex; flex-direction: column; gap: 5px; padding: 8px 10px; color: var(--blue-deep); background: rgba(255,255,255,.82); font: 600 8px/1 var(--sans); letter-spacing: .1em; }

.business-section { --business-pad-bottom: 104px; overflow: hidden; padding-block: 96px var(--business-pad-bottom); background: var(--sky-soft); }
.v3-section-head { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 36px; }
.v3-section-head .v3-eyebrow { margin-bottom: 12px; }
.v3-section-head h2 { margin: 0; font-size: clamp(36px,8.8vw,56px); font-weight: 800; line-height: 1.25; letter-spacing: -.045em; }
.v3-section-head > p { max-width: 460px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.85; }
.business-grid { display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); gap: 27px 13px; }
.business-card { position: relative; display: flex; min-width: 0; flex-direction: column; grid-column: span 2; }
.business-card:nth-child(-n+2) { grid-column: span 3; }
.business-card__visual { position: relative; display: block; width: 100%; aspect-ratio: 1.14; overflow: hidden; margin: 0; border-radius: 12px 12px 2px 2px; background: var(--sky); }
.business-card__visual picture { display: block; width: 100%; height: 100%; }
.business-card__visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.business-card:hover .business-card__visual img { transform: scale(1.035); }
.business-card[data-service="mobile"] .business-card__visual::after,
.business-card[data-service="ai"] .business-card__visual::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg,rgba(255,255,255,.9) 0%,rgba(255,255,255,.65) 34%,rgba(255,255,255,.06) 78%); }
.business-card__title { position: absolute; z-index: 1; right: 12px; bottom: 15px; left: 19px; margin: 0; color: var(--ink); font-size: clamp(20px,2.6vw,34px); font-weight: 800; line-height: 1.2; letter-spacing: -.045em; }
.business-card[data-service="mobile"] img { object-position: 68% center; }
.business-card[data-service="ai"] img { object-position: 61% center; }
.business-card[data-service="support"] img { object-position: 68% center; }
.business-card[data-service="development"] img { object-position: 50% center; }
.business-card[data-service="web"] img { object-position: 62% center; }
.business-card__body { position: relative; display: grid; grid-template-columns: 24px minmax(0,1fr) 24px; align-items: start; column-gap: 7px; padding-top: 14px; }
.business-card__index { grid-column: 1; grid-row: 1 / span 2; padding-top: 2px; color: var(--blue); font: 600 10px/1.3 var(--sans); }
.business-card__label { grid-column: 2 / 4; grid-row: 1; margin: 0 0 7px; overflow-wrap: anywhere; color: var(--muted); font: 600 8px/1.35 var(--sans); letter-spacing: .08em; }
.business-card__body h3 { grid-column: 2 / 4; grid-row: 2; margin: 0; padding-right: 4px; font-size: clamp(14px,3.5vw,21px); font-weight: 700; line-height: 1.5; letter-spacing: -.03em; }
.business-card__description { grid-column: 2 / 4; grid-row: 3; margin: 6px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.business-card[data-service="mobile"] .business-card__index,
.business-card[data-service="ai"] .business-card__index { grid-row: 1; }
.business-card[data-service="mobile"] .business-card__description,
.business-card[data-service="ai"] .business-card__description { grid-row: 2; }
.business-card__arrow { position: absolute; right: 0; top: 11px; display: grid; width: 25px; height: 25px; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--blue-deep); background: #fff; font-size: 13px; transition: color .2s ease, background .2s ease, border-color .2s ease; }
.business-card:hover .business-card__arrow { color: var(--blue); border-color: var(--line-strong); background: #fff; }

.brands-strip { position: relative; left: 50%; width: 100vw; margin: 82px 0 calc(0px - var(--business-pad-bottom)); padding-block: 25px 40px; overflow: hidden; background: #fff; transform: translateX(-50%); }
.brands-strip__container { width: min(calc(100% - var(--gutter)),var(--container)); margin-inline: auto; }
.brands-strip__head { display: flex; align-items: center; gap: 17px; margin: 0 0 25px; }
.brands-strip__head .v3-eyebrow { flex: 0 0 auto; margin: 0; }
.brands-strip__head > span { color: var(--muted); font-size: 11px; }
.brands-strip__viewport { overflow: hidden; -webkit-mask-image: linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent); mask-image: linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent); }
.brands-strip__track { display: flex; width: max-content; align-items: center; gap: 48px; animation: v3-brands-loop 27s linear infinite; }
.brands-strip:hover .brands-strip__track { animation-play-state: paused; }
.brands-strip__item { display: flex; min-width: 44px; min-height: 32px; align-items: center; justify-content: center; }
.brands-strip__item img { width: auto; height: 26px; max-width: 132px; object-fit: contain; }
@keyframes v3-brands-loop { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.products-section { padding-block: 100px 106px; }
.products-section__head { margin-bottom: 28px; }
.product-item { padding-block: 36px; border-top: 1px solid var(--line); }
.product-item__copy { position: absolute; z-index: 2; top: 50%; left: 6%; width: min(48%,620px); min-width: 0; margin: 0; transform: translateY(-50%); }
.product-item__title { display: flex; align-items: center; gap: 14px; }
.product-item__logo { width: 48px; height: 48px; flex: 0 0 auto; border-radius: 12px; object-fit: cover; }
.product-item__type { margin: 0 0 13px; color: var(--blue); font: 600 9px/1.5 var(--sans); letter-spacing: .14em; }
.product-item h3 { margin: 0; font-size: 35px; font-weight: 800; line-height: 1.2; letter-spacing: -.04em; }
.product-item__tagline { margin: 13px 0 0; color: var(--ink); font-size: 21px; font-weight: 700; line-height: 1.55; }
.product-item__description { max-width: 540px; margin: 12px 0 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.product-item__price { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin: 17px 0 8px; }
.product-item__price span { color: var(--muted); font-size: 12px; }
.product-item__price strong { color: var(--ink); font-size: 17px; font-weight: 700; }
.product-item__price small { color: var(--muted); font-size: 11px; font-weight: 500; }
.product-item__copy .v3-text-link { min-height: 34px; margin-top: 5px; }
.product-item__visual { position: relative; min-width: 0; aspect-ratio: 1.78; overflow: hidden; margin: 0; border-radius: 16px 16px 3px 16px; background: var(--sky-soft); }
.product-item__visual::before { position: absolute; z-index: 1; inset: 0; content: ""; pointer-events: none; background: linear-gradient(90deg,rgba(255,255,255,.24) 0%,rgba(255,255,255,.12) 48%,rgba(255,255,255,0) 69%); }
.product-item__visual > picture { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.product-item__visual > picture img { display: block; width: 100%; height: 100%; object-fit: cover; }

.why-section { padding-block: 100px 106px; background: var(--sky-soft); }
.why-section__grid { display: grid; grid-template-columns: 1fr; gap: 36px; }
.why-section__intro h2 { margin: 0; font-size: clamp(42px,10.5vw,62px); font-weight: 800; line-height: 1.2; letter-spacing: -.05em; }
.why-section__intro > p:not(.v3-eyebrow) { max-width: 500px; margin: 20px 0 12px; color: var(--muted); font-size: 15px; line-height: 1.9; }
.why-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.why-item { display: grid; grid-template-columns: 42px minmax(0,1fr); gap: 12px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.why-item__index { padding-top: 5px; color: var(--blue); font: 600 12px/1.2 var(--sans); }
.why-item h3 { margin: 0; font-size: clamp(20px,5.2vw,26px); font-weight: 700; line-height: 1.45; letter-spacing: -.03em; }
.why-item p { max-width: 570px; margin: 8px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.topics-section { padding-block: 92px 104px; }
.topics-section .v3-section-head { margin-bottom: 28px; }
.topics-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.topics-list a { display: grid; min-height: 78px; grid-template-columns: 76px minmax(0,1fr) 22px; align-items: center; gap: 9px; padding-block: 16px; border-bottom: 1px solid var(--line); transition: background-color .2s ease, padding-inline .2s ease; }
.topics-list a:hover { padding-inline: 8px; background: var(--sky-soft); }
.topics-list time { grid-column: 1; grid-row: 1; color: var(--muted); font: 600 10px/1.3 var(--sans); }
.topics-tag { grid-column: 1; grid-row: 2; align-self: start; color: var(--blue); font-size: 10px; font-weight: 700; }
.topics-list strong { grid-column: 2; grid-row: 1 / span 2; font-size: 13px; font-weight: 600; line-height: 1.65; }
.topics-arrow { grid-column: 3; grid-row: 1 / span 2; justify-self: end; color: var(--blue); font-size: 15px; }

.final-cta { position: relative; display: grid; min-height: 540px; align-items: center; overflow: hidden; color: #fff; background: var(--ink); isolation: isolate; }
.final-cta__visual, .final-cta__veil { position: absolute; z-index: -2; inset: 0; margin: 0; }
.final-cta__visual picture, .final-cta__visual img { width: 100%; height: 100%; }
.final-cta__visual img { object-fit: cover; object-position: 66% 62%; filter: saturate(.72) brightness(.46); }
.final-cta__veil { z-index: -1; background: linear-gradient(90deg,rgba(6,23,53,.9) 0%,rgba(6,23,53,.76) 48%,rgba(6,23,53,.35) 100%); }
.final-cta__inner { padding-block: 80px; }
.final-cta .v3-eyebrow { color: #a8d0ff; }
.final-cta__lead { margin: 0 0 8px; color: rgba(255,255,255,.83); font-size: 14px; }
.final-cta h2 { margin: 0; font-size: clamp(43px,8.8vw,78px); font-weight: 800; line-height: 1.2; letter-spacing: -.05em; }
.final-cta__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 29px; }
.final-cta__tel { display: flex; min-height: 48px; flex-direction: column; justify-content: center; gap: 4px; }
.final-cta__tel small { color: rgba(255,255,255,.7); font: 600 9px/1.2 var(--sans); letter-spacing: .1em; }
.final-cta__tel strong { color: #fff; font: 600 20px/1.3 var(--sans); letter-spacing: .02em; }

.v3-footer { padding-block: 54px 22px; background: #fff; }
.v3-footer__top { display: flex; flex-direction: column; align-items: flex-start; gap: 17px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.v3-brand--footer img { width: 76px; }
.v3-footer__top > p { margin: 0; font-size: 14px; font-weight: 600; }
.v3-footer__grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px 20px; padding-block: 32px; }
.v3-footer__grid > div { display: flex; min-width: 0; flex-direction: column; align-items: flex-start; gap: 9px; }
.v3-footer__label { margin: 0 0 4px; color: var(--blue); font: 700 9px/1.4 var(--sans); letter-spacing: .16em; }
.v3-footer__grid a, .v3-footer__grid p:not(.v3-footer__label) { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; overflow-wrap: anywhere; }
.v3-footer__grid a:hover { color: var(--blue-deep); }
.v3-footer__contact .v3-footer__phone { color: var(--ink); font: 600 16px/1.4 var(--sans); letter-spacing: .01em; }
.v3-footer__bottom { display: flex; flex-direction: column; gap: 14px; padding-top: 18px; border-top: 1px solid var(--line); }
.v3-footer__bottom p { margin: 0; color: var(--muted); font: 500 10px/1.5 var(--sans); letter-spacing: .04em; }
.v3-footer__socials { display: flex; flex-wrap: wrap; gap: 19px; }
.v3-footer__socials a { display: inline-flex; min-height: 36px; align-items: center; color: var(--ink-soft); font: 600 10px/1.4 var(--sans); letter-spacing: .04em; }
.v3-footer__socials a:hover { color: var(--blue); }

:focus-visible { outline: 3px solid rgba(18,103,214,.55); outline-offset: 4px; }
main:focus { outline: none; }

@media (min-width: 600px) {
  :root { --gutter: 56px; }
  .home-hero__inner { padding-block: 80px; }
  .home-hero__pre { max-width: 540px; }
  .business-grid { gap: 34px 20px; }
  .business-card__body { grid-template-columns: 32px minmax(0,1fr) 30px; column-gap: 12px; padding-top: 17px; }
  .business-card__index { font-size: 11px; }
  .business-card__label { font-size: 9px; letter-spacing: .1em; }
  .business-card__body h3 { font-size: clamp(18px,2.6vw,25px); }
  .business-card__description { font-size: 12px; }
  .business-card__arrow { width: 30px; height: 30px; top: 12px; }
  .product-item { gap: 32px; }
  .why-section__grid { gap: 42px; }
  .topics-list a { grid-template-columns: 92px 82px minmax(0,1fr) 24px; gap: 15px; min-height: 82px; }
  .topics-list time, .topics-tag, .topics-list strong, .topics-arrow { grid-row: 1; }
  .topics-tag { grid-column: 2; }
  .topics-list strong { grid-column: 3; font-size: 14px; }
  .topics-arrow { grid-column: 4; }
  .v3-footer__top { flex-direction: row; align-items: center; justify-content: space-between; }
}

@media (min-width: 768px) {
  :root { --gutter: 72px; }
  .home-hero { min-height: clamp(760px, calc(100svh - 80px), 930px); }
  .home-hero__visual { inset-inline-start: 10%; }
  .home-hero__copy { max-width: 680px; }
  .home-hero__scroll { bottom: 26px; }
  .brand-statement { padding-block: 132px 142px; }
  .brand-statement__grid { grid-template-columns: minmax(0,58%); grid-template-areas: "heading" "body"; row-gap: 24px; }
  .brand-statement__heading { max-width: 100%; }
  .brand-statement h2 { font-size: clamp(46px,6vw,72px); }
  .brand-statement__body { max-width: 100%; align-self: start; }
  .brand-statement__body .brand-statement__lead { font-size: clamp(20px,2.2vw,26px); }
  .brand-statement__visual { top: 4%; right: -28%; bottom: 5%; width: 61%; clip-path: ellipse(49% 49% at 67% 50%); }
  .brand-statement__visual::after { background: linear-gradient(90deg,#fff 0%,rgba(255,255,255,.78) 17%,rgba(255,255,255,.12) 58%,rgba(255,255,255,0) 100%); }
  .brand-statement__visual figcaption { right: 4%; bottom: 9%; }
  .business-section { --business-pad-bottom: 130px; padding-block: 130px var(--business-pad-bottom); }
  .products-section, .why-section { padding-block: 130px; }
  .v3-section-head { flex-direction: row; align-items: flex-end; justify-content: space-between; gap: 36px; margin-bottom: 49px; }
  .v3-section-head h2 { font-size: clamp(42px,5.2vw,66px); }
  .v3-section-head > p { margin-bottom: 7px; font-size: 15px; }
  .business-grid { grid-template-columns: repeat(12,minmax(0,1fr)); gap: 42px 24px; }
  .business-card { grid-column: span 4; }
  .business-card:nth-child(-n+2) { grid-column: span 6; }
  .business-card:nth-child(n+3) { grid-column: span 4; }
  .business-card__visual { aspect-ratio: 1.72; }
  .business-card__body { grid-template-columns: 38px minmax(0,1fr) 34px; gap: 14px; padding-top: 19px; }
  .business-card__label { margin-bottom: 8px; font-size: 10px; }
  .business-card__body h3 { font-size: clamp(21px,2.1vw,30px); }
  .business-card__description { margin-top: 8px; font-size: 13px; }
  .business-card__arrow { width: 34px; height: 34px; }
  .product-item { padding-block: 56px; }
  .product-item h3 { font-size: 42px; }
  .product-item__tagline { font-size: 24px; }
  .why-section__grid { grid-template-columns: minmax(0,.78fr) minmax(0,1.22fr); gap: clamp(48px,8vw,120px); }
  .why-section__intro { align-self: start; position: sticky; top: 114px; }
  .why-section__intro h2 { font-size: clamp(48px,5.4vw,70px); }
  .why-section__intro > p:not(.v3-eyebrow) { font-size: 15px; }
  .why-item { grid-template-columns: 54px minmax(0,1fr); gap: 18px; padding-block: 31px; }
  .why-item__index { font-size: 13px; }
  .why-item h3 { font-size: clamp(22px,2.3vw,31px); }
  .why-item p { font-size: 14px; }
  .topics-section { padding-block: 124px 134px; }
  .topics-section .v3-section-head { margin-bottom: 40px; }
  .topics-list a { grid-template-columns: 108px 100px minmax(0,1fr) 28px; min-height: 88px; gap: 20px; }
  .topics-list time { font-size: 12px; }
  .topics-tag { font-size: 11px; }
  .topics-list strong { font-size: 15px; }
  .final-cta { min-height: 620px; }
  .final-cta__inner { padding-block: 104px; }
  .final-cta__lead { font-size: 16px; }
  .v3-footer { padding-top: 70px; }
  .v3-footer__grid { grid-template-columns: 1.15fr .75fr 1fr 1.4fr; gap: 30px; padding-block: 46px; }
  .v3-footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}

@media (min-width: 1024px) {
  :root { --gutter: 88px; }
  .business-card:nth-child(-n+2) { grid-column: span 6; }
  .business-card:nth-child(n+3) { grid-column: span 4; }
  .v3-header__inner { height: 82px; }
  .v3-brand img { width: 78px; }
  .v3-nav { display: flex; align-items: center; justify-content: center; gap: clamp(15px,1.6vw,27px); }
  .v3-nav a { position: relative; display: inline-flex; min-height: 44px; align-items: center; color: var(--ink-soft); font-size: 12px; font-weight: 600; white-space: nowrap; }
  .v3-nav a::after { position: absolute; right: 100%; bottom: 5px; left: 0; height: 1px; content: ""; background: var(--blue); transition: right .2s ease; }
  .v3-nav a:hover { color: var(--ink); }
  .v3-nav a:hover::after { right: 0; }
  .v3-menu { display: none; }
  .v3-header__inner { display: grid; grid-template-columns: auto 1fr auto; gap: clamp(18px,3vw,48px); }
  .home-hero__visual { inset-inline-start: 7%; }
  .home-hero__visual img { object-position: 66% 54%; }
  .home-hero__network { right: 0; bottom: 5%; }
  .desktop-only { display: initial; }
}

@media (min-width: 1440px) {
  :root { --gutter: 104px; }
  .home-hero__inner { padding-block: 92px; }
  .home-hero__copy { max-width: 730px; }
  .home-hero h1 { font-size: 88px; }
}

@media (max-width: 899px) {
  .product-item__visual {
    display: flex;
    flex-direction: column;
    aspect-ratio: auto;
  }
  .product-item__visual::before { display: none; }
  .product-item__visual > picture {
    position: relative;
    inset: auto;
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    aspect-ratio: 1.78;
  }
  .product-item__visual > picture img { height: auto; }
  .product-item__copy {
    position: relative;
    top: auto;
    left: auto;
    width: auto;
    max-width: none;
    padding: 19px 20px 21px;
    transform: none;
    background: #fff;
  }
}

@media (max-width: 599px) {
  .v3-brand__meta, .v3-header__actions > .v3-button--header { display: none; }
  .home-hero__visual { inset: 0; }
  .home-hero__visual img { object-position: 66% 53%; }
  .home-hero__visual::after {
    background:
      linear-gradient(180deg, #fff 0%, rgba(255,255,255,.93) 14%, rgba(255,255,255,.3) 48%, rgba(255,255,255,.36) 73%, #fff 100%),
      linear-gradient(90deg, rgba(255,255,255,.28), rgba(255,255,255,0) 70%);
  }
  .home-hero__inner { justify-content: flex-start; padding-top: 54px; padding-bottom: 72px; }
  .home-hero__pre { max-width: 300px; margin-bottom: 14px; font-size: 13px; }
  .home-hero h1 { font-size: clamp(40px,10.9vw,50px); line-height: 1.2; letter-spacing: -.055em; }
  .home-hero__lead { max-width: 330px; margin-top: 17px; font-size: 15px; line-height: 1.8; }
  .home-hero__actions { width: min(100%,360px); flex-direction: column; align-items: stretch; gap: 10px; margin-top: 22px; }
  .home-hero__actions .v3-button { width: 100%; min-height: 50px; }
  .home-hero__network { right: -38%; bottom: 13%; width: 96vw; opacity: .28; }
  .home-hero__rings { top: 23%; right: -52%; width: 96vw; opacity: .58; }
  .home-hero__scroll { bottom: 20px; }
  .brand-statement { padding-block: 86px 92px; }
  .brand-statement h2 { font-size: clamp(37px,10vw,46px); }
  .brand-statement__heading { max-width: 100%; }
  .business-section { --business-pad-bottom: 86px; padding-block: 86px var(--business-pad-bottom); }
  .products-section, .why-section { padding-block: 86px; }
  .v3-section-head { margin-bottom: 30px; }
  .v3-section-head h2 { font-size: 39px; }
  .business-grid { gap: 26px 10px; }
  .business-card__visual { border-radius: 9px 9px 2px 2px; }
  .business-card__body { grid-template-columns: 20px minmax(0,1fr) 21px; column-gap: 5px; padding-top: 11px; }
  .business-card__index { font-size: 9px; }
  .business-card__label { margin-bottom: 5px; font-size: 7px; letter-spacing: .045em; }
  .business-card__body h3 { font-size: clamp(13px,3.4vw,16px); line-height: 1.45; }
  .business-card__visual { aspect-ratio: 1.24; }
  .business-card__title { right: 8px; bottom: 10px; left: 10px; font-size: clamp(12px,4.3vw,18px); }
  .business-card[data-service="mobile"] .business-card__title,
  .business-card[data-service="ai"] .business-card__title { font-size: clamp(15px,4.8vw,19px); }
  .business-card__description { margin-top: 5px; font-size: 10px; line-height: 1.65; }
  .business-card__arrow { top: 8px; width: 22px; height: 22px; font-size: 11px; }
  .product-item { padding-block: 29px; }
  .product-item__visual { border-radius: 12px 12px 2px 12px; }
  .product-item__title { gap: 9px; }
  .product-item__logo { width: 34px; height: 34px; border-radius: 9px; }
  .product-item__type { margin-bottom: 5px; font-size: 8px; letter-spacing: .07em; }
  .product-item h3 { font-size: clamp(20px,6vw,28px); }
  .product-item__tagline { margin-top: 8px; font-size: 15px; line-height: 1.5; }
  .product-item__description { margin-top: 8px; font-size: 12px; line-height: 1.7; }
  .product-item__price { gap: 3px 7px; margin: 8px 0 4px; }
  .product-item__price span { font-size: 9px; }
  .product-item__price strong { font-size: 13px; }
  .product-item__price small { font-size: 9px; }
  .product-item__copy .v3-text-link { min-height: 34px; margin-top: 4px; font-size: 12px; }
  .why-section__grid { gap: 28px; }
  .why-item { padding-block: 21px; }
  .why-item h3 { font-size: 21px; }
  .why-item p { font-size: 12px; }
  .topics-section { padding-block: 86px 92px; }
  .topics-section .v3-section-head { gap: 12px; }
  .topics-section .v3-section-head h2 { font-size: 34px; }
  .topics-list a { grid-template-columns: 70px minmax(0,1fr) 18px; gap: 8px; }
  .topics-list time { font-size: 9px; }
  .topics-tag { font-size: 9px; }
  .topics-list strong { font-size: 12px; line-height: 1.65; }
  .final-cta { min-height: 520px; }
  .final-cta__inner { padding-block: 76px; }
  .final-cta__veil { background: linear-gradient(180deg,rgba(6,23,53,.74),rgba(6,23,53,.92)); }
  .final-cta h2 { font-size: clamp(42px,10vw,54px); }
  .final-cta__actions { align-items: flex-start; flex-direction: column; gap: 15px; margin-top: 23px; }
  .v3-footer { padding-top: 50px; }
  .v3-footer__grid { gap: 25px 15px; }
  .v3-footer__grid a, .v3-footer__grid p:not(.v3-footer__label) { font-size: 11px; }
}

@media (max-width: 375px) {
  :root { --gutter: 36px; }
  .v3-header__inner { gap: 8px; }
  .v3-brand img { width: 61px; }
  .v3-menu { width: 42px; height: 42px; flex-basis: 42px; }
  .home-hero__pre { max-width: 270px; }
  .home-hero h1 { font-size: 40px; }
  .brand-statement h2 { font-size: 37px; }
  .business-card__label { font-size: 6.5px; }
  .business-card__body h3 { font-size: 13px; }
  .business-card__description { font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .v3-ticker__track, .brands-strip__track { animation: none !important; }
}

/* v3.1: SEO/GEOの質問情報を、既存のブランド表現に沿って追加 */
.questions-section { padding-block: 92px 104px; background: var(--sky-soft); }
.questions-section .v3-section-head { margin-bottom: 28px; }
.home-faq { max-width: 960px; margin-inline: auto; border-top: 1px solid var(--line-strong); }
.home-faq__item { border-bottom: 1px solid var(--line); }
.home-faq__item summary { display: grid; min-height: 76px; grid-template-columns: 34px minmax(0,1fr) 32px; align-items: center; gap: 13px; padding: 14px 0; cursor: pointer; list-style: none; }
.home-faq__item summary::-webkit-details-marker { display: none; }
.home-faq__badge { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--blue); background: #fff; font: 700 11px/1 var(--sans); }
.home-faq__item summary strong { font-size: clamp(15px,2vw,17px); font-weight: 600; line-height: 1.65; }
.home-faq__toggle { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--blue-deep); background: #fff; font: 500 17px/1 var(--sans); }
.home-faq__toggle::before { content: "+"; }
.home-faq__item[open] .home-faq__toggle::before { content: "−"; }
.home-faq__answer { display: grid; grid-template-columns: 34px minmax(0,1fr); gap: 13px; padding: 0 45px 22px 0; color: var(--muted); }
.home-faq__answer-label { color: var(--blue); font: 700 12px/1.9 var(--sans); }
.home-faq__answer p { max-width: 760px; margin: 0; font-size: 14px; line-height: 1.9; }
.home-faq__more { margin-top: 26px; }
.consultation-flow { max-width: 960px; margin: 0 auto 38px; }
.consultation-flow__head { margin-bottom: 16px; }
.consultation-flow__head .v3-eyebrow { margin-bottom: 7px; }
.consultation-flow__head h3 { margin: 0; color: var(--ink); font-size: clamp(22px,4.5vw,30px); font-weight: 700; line-height: 1.4; letter-spacing: -.03em; }
.consultation-flow__head > p:last-child { max-width: 700px; margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.consultation-flow__steps { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; margin: 0; padding: 0; list-style: none; }
.consultation-flow__steps li { min-width: 0; padding: 13px 12px; border: 1px solid var(--line); background: #fff; }
.consultation-flow__steps li > span { color: var(--blue); font: 600 9px/1.4 var(--sans); letter-spacing: .1em; }
.consultation-flow__steps h4 { margin: 5px 0 0; color: var(--ink); font-size: 14px; font-weight: 700; line-height: 1.5; }
.consultation-flow__steps li > p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; }

@media (min-width: 768px) {
  .questions-section { padding-block: 124px 134px; }
  .home-faq__item summary { min-height: 82px; grid-template-columns: 40px minmax(0,1fr) 34px; gap: 16px; padding-block: 18px; }
  .home-faq__answer { grid-template-columns: 40px minmax(0,1fr); gap: 16px; padding-bottom: 24px; }
  .home-faq__answer p { font-size: 15px; }
  .consultation-flow { margin-bottom: 46px; }
  .consultation-flow__steps { grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; }
  .consultation-flow__steps li { padding: 17px 14px; }
  .consultation-flow__steps li > span { font-size: 10px; }
  .consultation-flow__steps h4 { font-size: 15px; }
  .consultation-flow__steps li > p { font-size: 12px; }
}

@media (max-width: 599px) {
  .home-faq__item summary { grid-template-columns: 28px minmax(0,1fr) 26px; gap: 8px; }
  .home-faq__badge { width: 25px; height: 25px; }
  .home-faq__toggle { width: 24px; height: 24px; }
  .home-faq__answer { grid-template-columns: 28px minmax(0,1fr); gap: 8px; padding-right: 32px; }
  .home-faq__answer p { font-size: 13px; }
  .consultation-flow__steps { gap: 7px; }
  .consultation-flow__steps li { padding: 11px 9px; }
  .consultation-flow__steps h4 { font-size: 13px; }
  .consultation-flow__steps li > p { font-size: 10px; }
}