:root {
  --bg: #0b0c0f;
  --text: #e9ecef;
  --muted: #b5b8c1;
  --line: rgba(255, 255, 255, 0.12);
  --radius: 14px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --brand: #2dd4bf;
  --brand2: #14b8a6;
  --brand3: #0d9488;
  --grid: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08) 0, transparent 32%),
    radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.05) 0, transparent 30%);
  /* Problems I Solve のカードと同じ透過を全カードで共有 */
  --card-bg: rgba(255, 255, 255, 0.04);
}

body[data-theme="amber"] {
  --brand: #f59e0b;
  --brand2: #ef4444;
  --brand3: #f08c00;
}

body[data-theme="tomato"] {
  --brand: #f25f4c;
  --brand2: #ef4444;
  --brand3: #d92d20;
}

body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans JP', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  letter-spacing: 0.01em;
}

* {
  box-sizing: border-box;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

header, section, footer {
  padding-inline: clamp(1rem, 2vw, 2.5rem);
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: rgba(11, 12, 15, 0.8);
  z-index: 20;
  border-bottom: 1px solid var(--line);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand__logo {
  width: 100px;
  height: auto;
}

.brand__name {
  font-size: 2.5rem;
}

/* =========================
   Hero
   ========================= */

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3rem, 7vw, 5.5rem);
  position: relative;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero::before {
  background: var(--grid);
  opacity: 0.55;
}

.hero::after {
  background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(300deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 22px 22px, 40px 40px;
  mix-blend-mode: screen;
  opacity: 0.35;
}

.eyebrow {
  color: var(--brand);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
  text-transform: uppercase;
  margin: 0 0 0.5rem 0;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  -webkit-background-clip: text;
  color: transparent;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95em;
  letter-spacing: 0.02em;
}

.lead {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.hero__actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid var(--line);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
}

.btn.primary {
  background: linear-gradient(120deg, var(--brand3), var(--brand));
  color: #0b0c0f;
  border: none;
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* 旧2カラム用ビジュアルは残しておく（未使用） */
.hero__visual {
  justify-self: end;
  max-width: 520px;
  position: relative;
  z-index: 1;
}

.hero__image {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

/* Hero: 1カラム・フル幅カード */

.hero__grid--single {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
  max-width: 1200px;      /* 横幅の上限 */
  margin-inline: auto;    /* 中央寄せ */
}

.hero__content--single {
  width: 100%;
  padding: 1.6rem 1.7rem;
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

@media (max-width: 768px) {
  .hero__grid--single {
    padding-inline: 0.75rem;
  }

  .hero__content--single {
    width: 100%;
  }
}

/* =========================
   共通カード系
   ========================= */

.section__header {
  margin-bottom: 1.5rem;
}

.section__header h2 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.cards--grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.1rem;
}

/* 整える/繋げる/可視化含む全カードの“ガラス板”背景を統一 */

.card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.card--flat {
  background: var(--card-bg);
  box-shadow: var(--shadow);
}

.card--borderOnly {
  background: var(--card-bg);
  box-shadow: var(--shadow);
  border-style: dashed;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.service-axes .card h3 {
  font-size: 1.4rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.9rem;
}

.tag.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  letter-spacing: 0.04em;
}

/* =========================
   Problems I Solve
   ========================= */

.problems {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.clusters {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)); /* ★ 2カラム指定 */
  gap: 1.2rem;
}

.cluster {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.cluster--outline {
  background: var(--card-bg);
  border-style: dashed;
}

.cluster header h3 {
  margin: 0 0 0.4rem;
}

.cluster .mini {
  margin: 0 0 0.8rem;
  color: var(--muted);
}

.cluster__body {
  display: grid;
  gap: 0.8rem;
}

.cluster h4 {
  margin: 0 0 0.3rem;
  color: var(--brand);
}

.cluster ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  display: grid;
  gap: 0.3rem;
}

/* =========================
   Ops Studio セクション
   ========================= */

.studio {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  position: relative;
}

.studio::before {
  content: "Ops Studio";
  position: absolute;
  top: 1rem;
  right: 3%;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.2);
}

.studio__inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: center;
}

.studio__text h2 {
  margin: 0.2rem 0 0.8rem;
}

.studio__text p {
  margin: 0;
  color: var(--muted);
}

.studio__diagram {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: center;
  gap: 0.4rem;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  position: relative;
}

.studio__diagram .node {
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  text-align: center;
  font-weight: 700;
}

.connector {
  display: grid;
  gap: 0.3rem;
  justify-items: center;
}

.line {
  display: block;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
}

.line--alt {
  background: linear-gradient(90deg, transparent, var(--brand2), transparent);
  height: 1px;
  opacity: 0.8;
}

.diagram__note {
  grid-column: 1 / -1;
  text-align: right;
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0.3rem;
}

/* =========================
   Process / Flow
   ========================= */

.process {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.flow {
  position: relative;
  padding: 2rem 1rem;
  padding-left: 3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  overflow: hidden;
}

.track {
  position: absolute;
  background: var(--brand2);
  opacity: 0.8;
  transform-origin: left center;
  transition: transform 0.9s ease;
}

.track--h {
  height: 2px;
  width: 100%;
  top: 50%;
  left: 0;
  transform: scaleX(0);
  display: none;
}

.track--v {
  width: 2px;
  height: 100%;
  left: 1.1rem;
  top: 0;
  transform: scaleY(0);
}

.flow.is-on .track--h {
  transform: scaleX(1);
}

.flow.is-on .track--v {
  transform: scaleY(1);
}

.steps {
  display: grid;
  gap: 1.8rem;
}

.step {
  position: relative;
  padding-left: 2.6rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.flow.is-on .step {
  opacity: 1;
  transform: translateY(0);
}

.flow.is-on .step:nth-child(1) { transition-delay: 0.1s; }
.flow.is-on .step:nth-child(2) { transition-delay: 0.2s; }
.flow.is-on .step:nth-child(3) { transition-delay: 0.3s; }
.flow.is-on .step:nth-child(4) { transition-delay: 0.4s; }

.dot {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  left: 0.6rem;
  top: 0.2rem;
  background: var(--brand);
  box-shadow: 0 0 0 6px rgba(45, 212, 191, 0.08);
  transition: box-shadow 0.3s ease;
}

.flow.is-on .dot {
  box-shadow: 0 0 0 8px rgba(45, 212, 191, 0.12);
}

.step h3 {
  margin: 0 0 0.3rem;
  font-size: 1.1rem;
}

.step p {
  margin: 0;
  color: var(--muted);
}

/* =========================
   Contact
   ========================= */

.contact {
  padding: clamp(3rem, 7vw, 5rem) 0 clamp(4rem, 8vw, 6rem);
}

.panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  padding: 1.6rem;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.panel__text h2 {
  margin: 0.2rem 0 0.8rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.panel__text p {
  margin: 0;
  color: var(--muted);
}

.panel__form {
  min-height: 220px;
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px dashed var(--line);
  padding: 1rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

/* =========================
   Footer
   ========================= */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2rem;
  background: rgba(255, 255, 255, 0.02);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.footer__links {
  display: inline-flex;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.muted {
  color: var(--muted);
  margin: 0;
}

/* =========================
   Legal page
   ========================= */

.legal-page {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.legal-page .card {
  max-width: 780px;
  margin: 0 auto;
}

.legal-page h1 {
  margin-top: 0;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.legal-page h2 {
  margin: 1.8rem 0 0.6rem;
  font-size: 1.2rem;
}

.legal-page ul {
  padding-left: 1.2rem;
}

.legal-page li + li {
  margin-top: 0.4rem;
}

/* =========================
   レスポンシブ
   ========================= */


/* clusters をモバイルで1カラムに */
@media (max-width: 768px) {
  .clusters {
    grid-template-columns: 1fr;
  }
}

/* =========================
   Services: 追加アコーディオン
   ========================= */

.services-extra {
  margin-top: 3rem;
}

.services-extra__lead {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
  color: rgba(255, 255, 255, 0.72);
}

/* アコーディオン本体も“カード”扱い */
.service-accordion {
  border-radius: 0.875rem;
  border: 1px solid var(--line);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  padding: 0;
}

/* アコーディオンヘッダーをトマトカラーのボタンっぽく */
.service-accordion summary {
  list-style: none;
  cursor: pointer;
  padding: 0.9rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-weight: 600;
  background: linear-gradient(120deg, var(--brand3), var(--brand));
  color: #0b0c0f;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.service-accordion summary::-webkit-details-marker {
  display: none;
}

.service-accordion__summary span:first-child {
  font-size: 0.95rem;
}

.service-accordion__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.4);
  font-size: 1rem;
  line-height: 1;
  transform-origin: center;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
  background: rgba(0, 0, 0, 0.08);
  color: #0b0c0f;
}

.service-accordion[open] .service-accordion__icon {
  transform: rotate(45deg); /* ＋ → × に見える */
  background: rgba(0, 0, 0, 0.18);
}

/* アコーディオンの中身 */
.service-accordion__panel {
  padding: 0 1.2rem 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* 3カラムのサービスメニュー */
.service-menu-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 1.2rem;
}

/* card ベースで微調整だけ */
.card--serviceMenu {
  padding: 1rem 1rem 1.2rem;
  border-radius: 0.75rem;
  min-height: 0;
}

.service-menu__category {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  color: rgba(255, 255, 255, 0.58);
}

.service-menu__title {
  font-size: 0.98rem;
  margin-bottom: 0.4rem;
  color: #ffffff;
}

.service-menu__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 0.5rem;
  color: rgba(255, 255, 255, 0.86);
}

.service-menu__meta {
  font-size: 0.82rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.75);
}

/* レスポンシブ：横幅が狭い時は2カラム → 1カラムに落とす */
@media (max-width: 960px) {
  .service-menu-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .service-accordion__panel {
    padding-inline: 0.9rem;
  }

  .service-menu-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================
   背景：赤い銀河団オービットアニメ
   ========================= */

.bg-orbit {
  position: fixed;
  inset: 0;
  z-index: -1;              /* コンテンツより後ろ */
  overflow: hidden;
  pointer-events: none;     /* 背景なのでクリックを邪魔しない */
  background: radial-gradient(
      circle at top,
      rgba(255, 80, 80, 0.18),
      transparent 60%
    ),
    radial-gradient(
      circle at bottom,
      rgba(255, 80, 80, 0.1),
      transparent 55%
    ),
    #050509;                /* ベースの暗い背景色 */
}

.bg-orbit canvas {
  width: 100%;
  height: 100%;
  display: block;
}


a.link-danger { color: red; }
a.link-danger:visited { color: red; }
a.link-danger:hover { color: red; }