/* === Claude Design 活用支援サービス LP === */
:root {
  --bg: #0e1116;
  --bg-elev: #151922;
  --bg-card: #161b25;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --fg: #e8ebf2;
  --fg-mute: #9aa3b2;
  --fg-soft: #c4cad6;
  --accent: #8aa4ff;        /* periwinkle */
  --accent-2: #b8c5ff;
  --accent-soft: rgba(138,164,255,0.14);
  --accent-line: rgba(138,164,255,0.30);
  --warn: #ffb38a;
  --radius: 14px;
  --radius-lg: 20px;
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter Tight", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-feature-settings: "palt";
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
:lang(ja), [lang="ja"] {
  font-family: "Noto Sans JP", "Inter Tight", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  letter-spacing: 0.02em;
}

/* Background atmosphere */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(138,164,255,0.10), transparent 60%),
    radial-gradient(700px 400px at -10% 30%, rgba(138,164,255,0.06), transparent 60%);
  z-index: 0;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14,17,22,0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 14px;
  color: var(--fg);
}
.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  display: grid;
  place-items: center;
  color: #0e1116;
  font-weight: 700;
  font-size: 13px;
  font-family: "Inter Tight", sans-serif;
}
.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav a {
  color: var(--fg-mute);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  transition: color .18s ease;
}
.nav a:hover { color: var(--fg); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px;
  font-size: 12px;
  font-family: "Inter Tight", sans-serif;
  letter-spacing: 0.06em;
}
.lang-toggle button {
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--fg-mute);
  transition: background .18s ease, color .18s ease;
}
.lang-toggle button.is-active {
  background: var(--fg);
  color: #0e1116;
  font-weight: 600;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: transform .15s ease, background .18s ease, border-color .18s ease, color .18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--fg);
  color: #0e1116;
  border: 1px solid var(--fg);
}
.btn-primary:hover { background: var(--accent-2); border-color: var(--accent-2); transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--fg);
}
.btn-ghost:hover { border-color: var(--accent-line); color: var(--accent-2); }
.btn .arrow { display: inline-block; transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

@media (max-width: 820px) {
  .nav { display: none; }
}

/* ----- Section primitives ----- */
section {
  position: relative;
  z-index: 1;
  padding: 120px 0;
  border-top: 1px solid var(--line);
}
section:first-of-type { border-top: 0; }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Inter Tight", sans-serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 24px;
}
.kicker::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent-2);
}
.section-title {
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  text-wrap: pretty;
  white-space: pre-line;
}
.section-sub {
  font-size: 16px;
  color: var(--fg-mute);
  max-width: 640px;
  margin: 0;
  text-wrap: pretty;
}
.section-head { margin-bottom: 64px; }

/* ----- Hero ----- */
.hero {
  padding: 96px 0 120px;
  border-top: 0;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent-2);
  border-radius: 999px;
  font-family: "Inter Tight", sans-serif;
  font-size: 12px;
  letter-spacing: 0.06em;
  margin-bottom: 36px;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 4px rgba(184,197,255,0.18);
}
.hero h1 {
  font-size: clamp(40px, 6vw, 84px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 32px;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--accent-2); }
.hero h1 .muted { color: var(--fg-mute); }
.hero h1 .line { display: block; }
.hero-lede {
  max-width: 620px;
  font-size: 17px;
  color: var(--fg-soft);
  margin: 0 0 40px;
  white-space: pre-line;
  text-wrap: pretty;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 56px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  color: var(--fg-mute);
  font-size: 13px;
  letter-spacing: 0.04em;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-meta span::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

/* hero side glyph */
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
}
.hero-card {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(138,164,255,0.06), rgba(138,164,255,0)) ,
    var(--bg-elev);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  gap: 20px;
}
.hero-card .pill {
  font-family: "Inter Tight", sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.hero-prompts {
  display: grid;
  gap: 10px;
}
.hero-prompts .prompt {
  border: 1px solid var(--line);
  background: var(--bg-card);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13.5px;
  color: var(--fg-soft);
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-prompts .prompt::before {
  content: "›";
  font-family: "Inter Tight", sans-serif;
  color: var(--accent-2);
  font-weight: 600;
}
.hero-output {
  border-top: 1px dashed var(--line);
  padding-top: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-family: "Inter Tight", sans-serif;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-mute);
}
.hero-output b {
  color: var(--accent-2);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 11px;
  display: block;
  margin-bottom: 2px;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 72px 0 96px; }
}

/* ----- Capabilities ----- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cap {
  background: var(--bg);
  padding: 32px 28px;
  display: grid;
  gap: 12px;
  transition: background .2s ease;
}
.cap:hover { background: var(--bg-elev); }
.cap .num {
  font-family: "Inter Tight", sans-serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent-2);
}
.cap .t {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0;
  margin: 0;
}
.cap .d {
  font-size: 14px;
  color: var(--fg-mute);
  margin: 0;
  text-wrap: pretty;
}
@media (max-width: 820px) {
  .cap-grid { grid-template-columns: 1fr; }
}

/* ----- Services ----- */
.svc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.svc-card {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: grid;
  gap: 22px;
  position: relative;
  overflow: hidden;
}
.svc-card.is-featured {
  border-color: var(--accent-line);
  background:
    linear-gradient(180deg, rgba(138,164,255,0.10), rgba(138,164,255,0)) ,
    var(--bg-elev);
}
.svc-card .tag {
  display: inline-flex;
  align-items: center;
  font-family: "Inter Tight", sans-serif;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
  border: 1px solid var(--accent-line);
  padding: 4px 10px;
  border-radius: 999px;
  width: fit-content;
}
.svc-card h3 {
  font-size: 24px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.005em;
}
.svc-card .price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: "Inter Tight", sans-serif;
}
.svc-card .price .amount {
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.svc-card .price .unit {
  font-size: 14px;
  color: var(--fg-mute);
}
.svc-card p.desc {
  margin: 0;
  color: var(--fg-soft);
  font-size: 14.5px;
}
.svc-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.svc-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  color: var(--fg-soft);
}
.svc-card ul li::before {
  content: "";
  flex: none;
  margin-top: 9px;
  width: 14px;
  height: 1px;
  background: var(--accent-2);
}
@media (max-width: 820px) {
  .svc-grid { grid-template-columns: 1fr; }
  .svc-card { padding: 28px; }
}

/* ----- Pricing table ----- */
.pricing-table {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-elev);
}
.pricing-table table {
  width: 100%;
  border-collapse: collapse;
}
.pricing-table th, .pricing-table td {
  padding: 22px 28px;
  text-align: left;
  font-size: 15px;
}
.pricing-table thead th {
  font-family: "Inter Tight", sans-serif;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-mute);
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
}
.pricing-table tbody tr + tr td { border-top: 1px solid var(--line); }
.pricing-table tbody tr:hover td { background: rgba(138,164,255,0.04); }
.pricing-table .item { color: var(--fg); }
.pricing-table .type {
  color: var(--fg-mute);
  font-family: "Inter Tight", sans-serif;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.pricing-table .price {
  font-family: "Inter Tight", sans-serif;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--accent-2);
  text-align: right;
  white-space: nowrap;
}
.pricing-table thead th:last-child { text-align: right; }
.pricing-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--fg-mute);
}
@media (max-width: 700px) {
  .pricing-table th, .pricing-table td { padding: 16px 18px; font-size: 14px; }
}

/* ----- Features ----- */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feat {
  background: var(--bg);
  padding: 36px;
  display: grid;
  gap: 10px;
}
.feat .t {
  font-size: 19px;
  font-weight: 600;
  margin: 0;
}
.feat .d {
  margin: 0;
  color: var(--fg-mute);
  font-size: 14.5px;
  text-wrap: pretty;
}
@media (max-width: 700px) {
  .feat-grid { grid-template-columns: 1fr; }
  .feat { padding: 28px; }
}

/* ----- Audience ----- */
.aud-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.aud-list li {
  list-style: none;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  border-radius: 12px;
  padding: 18px 22px;
  font-size: 15px;
  color: var(--fg-soft);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: border-color .2s ease, background .2s ease;
}
.aud-list li:hover { border-color: var(--accent-line); background: rgba(138,164,255,0.05); }
.aud-list li::before {
  content: "→";
  color: var(--accent-2);
  font-family: "Inter Tight", sans-serif;
  font-size: 16px;
  margin-top: 1px;
}
.aud-list { padding: 0; margin: 0; }
@media (max-width: 700px) { .aud-list { grid-template-columns: 1fr; } }

/* ----- Showcase ----- */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  gap: 18px;
}
.case .tag {
  font-family: "Inter Tight", sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
}
.case .ba {
  display: grid;
  gap: 14px;
}
.case .ba .row {
  display: grid;
  gap: 4px;
}
.case .ba .label {
  font-family: "Inter Tight", sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.case .ba .before { color: var(--fg-mute); font-size: 14px; }
.case .ba .after { color: var(--fg); font-size: 14.5px; line-height: 1.55; }
.case .time {
  font-family: "Inter Tight", sans-serif;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent-2);
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}
@media (max-width: 900px) { .cases { grid-template-columns: 1fr; } }

/* ----- Flow ----- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.step {
  background: var(--bg);
  padding: 32px 28px;
  display: grid;
  gap: 12px;
  position: relative;
}
.step .n {
  font-family: "Inter Tight", sans-serif;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent-2);
}
.step .t { font-size: 17px; font-weight: 600; margin: 0; }
.step .d { margin: 0; color: var(--fg-mute); font-size: 14px; text-wrap: pretty; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ----- FAQ ----- */
.faq-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.faq-item {
  background: var(--bg);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-size: 16px;
  font-weight: 500;
  transition: background .15s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: var(--bg-elev); }
.faq-item .icon {
  flex: none;
  width: 22px; height: 22px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--accent-2);
  font-family: "Inter Tight", sans-serif;
  font-size: 14px;
  transition: transform .25s ease, border-color .25s ease;
}
.faq-item[open] .icon { transform: rotate(45deg); border-color: var(--accent-line); }
.faq-item .a {
  padding: 0 28px 26px;
  color: var(--fg-mute);
  font-size: 14.5px;
  max-width: 760px;
  text-wrap: pretty;
}

/* ----- CTA ----- */
.cta-block {
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(600px 300px at 80% 0%, rgba(138,164,255,0.16), transparent 70%),
    linear-gradient(180deg, rgba(138,164,255,0.06), rgba(138,164,255,0)) ,
    var(--bg-elev);
  padding: 72px 56px;
  text-align: center;
}
.cta-block .kicker { justify-content: center; }
.cta-block h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
}
.cta-block p {
  color: var(--fg-soft);
  margin: 0 auto 32px;
  max-width: 540px;
  text-wrap: pretty;
}
.cta-block .micro {
  margin-top: 16px;
  font-size: 12px;
  color: var(--fg-mute);
  letter-spacing: 0.04em;
}
.cta-block .btn {
  padding: 14px 26px;
  font-size: 15px;
}
@media (max-width: 700px) {
  .cta-block { padding: 48px 24px; }
}

/* ----- Footer ----- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 56px;
  color: var(--fg-mute);
  font-size: 13px;
}
.site-footer .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* utility */
.muted { color: var(--fg-mute); }
.divider {
  height: 1px;
  background: var(--line);
  margin: 0;
  border: 0;
}