@charset "UTF-8";

/* ============================================================
   Kamekura Solutions — shared stylesheet
   アクセントカラーを変えたい場合は :root の --accent / --accent-2 のみ変更
   ============================================================ */

:root {
  --bg: #0b0d12;
  --bg-elev: #12161f;
  --bg-elev-2: #171d29;
  --border: #232a38;
  --border-soft: #1b212c;

  --text: #c9cdd6;
  --text-strong: #f0f2f6;
  --muted: #8b93a3;

  --accent: #2fe0b0;
  --accent-2: #35c8f0;
  --accent-ink: #06231c; /* アクセント面の上に置く文字色 */

  --container: 1100px;
  --radius: 14px;

  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 40px;
  --s-5: 64px;
  --s-6: 96px;

  --font: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP",
    "Yu Gothic", Meiryo, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-color: var(--accent);
}

h1,
h2,
h3 {
  color: var(--text-strong);
  letter-spacing: 0.02em;
  line-height: 1.45;
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- layout ---------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--s-3);
}

.section {
  padding-block: var(--s-6);
  border-top: 1px solid var(--border-soft);
}

.section-head {
  margin-bottom: var(--s-4);
}

.eyebrow {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s-1);
}

.section-head h2 {
  font-size: clamp(24px, 3.4vw, 32px);
}

.section-head p {
  margin: var(--s-2) 0 0;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- skip link ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 16px;
  z-index: 100;
}

.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text-strong);
  text-decoration: none;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand svg {
  flex: none;
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--s-3);
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.nav a:hover {
  color: var(--text-strong);
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.15s ease, background-color 0.15s ease,
    border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--accent) 85%, #fff);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text-strong);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.nav .btn {
  padding: 9px 18px;
  font-size: 14px;
}

/* ---------- language switch ---------- */

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-strong) !important;
  background: transparent;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none !important;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.lang-switch:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
  transform: translateY(-1px);
}

.lang-switch svg {
  flex: none;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(72px, 12vw, 140px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto;
  height: 620px;
  background: radial-gradient(
      48% 55% at 22% 32%,
      color-mix(in srgb, var(--accent) 22%, transparent) 0%,
      transparent 70%
    ),
    radial-gradient(
      40% 50% at 78% 18%,
      color-mix(in srgb, var(--accent-2) 18%, transparent) 0%,
      transparent 70%
    );
  filter: blur(10px);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 100%);
  opacity: 0.55;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
  font-size: 13px;
  color: var(--muted);
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent);
}

.hero h1 {
  margin: var(--s-3) 0 0;
  font-size: clamp(34px, 6.2vw, 62px);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: var(--s-3) 0 0;
  font-size: clamp(15px, 1.9vw, 18px);
  color: var(--muted);
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-4);
}

/* ---------- cards ---------- */

.grid {
  display: grid;
  gap: var(--s-3);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-3);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  transform: translateY(-2px);
}

.card h3 {
  font-size: 18px;
  margin-bottom: var(--s-1);
}

.card p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  margin-bottom: var(--s-2);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}

/* ---------- products ---------- */

.product {
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.product:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  transform: translateY(-2px);
}

.product-thumb {
  aspect-ratio: 16 / 10;
  display: grid;
  place-items: center;
  background: linear-gradient(
      135deg,
      color-mix(in srgb, var(--accent) 16%, transparent),
      color-mix(in srgb, var(--accent-2) 12%, transparent)
    ),
    var(--bg-elev-2);
  border-bottom: 1px solid var(--border);
  color: color-mix(in srgb, var(--accent) 70%, var(--text));
}

.product-body {
  padding: var(--s-3);
}

.product-body h3 {
  font-size: 17px;
}

.product-body p {
  margin: var(--s-1) 0 0;
  font-size: 14px;
  color: var(--muted);
}

.tag {
  display: inline-block;
  margin-bottom: var(--s-1);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.tag-muted {
  color: var(--muted);
  background: color-mix(in srgb, var(--muted) 12%, transparent);
}

/* ---------- company table ---------- */

.company {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: var(--s-5);
  align-items: start;
}

.spec {
  margin: 0;
  border-top: 1px solid var(--border-soft);
}

.spec > div {
  display: grid;
  grid-template-columns: 8em 1fr;
  gap: var(--s-2);
  padding: 14px 0;
  border-bottom: 1px solid var(--border-soft);
}

.spec dt {
  color: var(--muted);
  font-size: 14px;
}

.spec dd {
  margin: 0;
  color: var(--text-strong);
  font-size: 15px;
}

/* ---------- contact ---------- */

.contact-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-elev);
  padding: clamp(28px, 5vw, 56px);
  text-align: center;
}

.contact-panel::before {
  content: "";
  position: absolute;
  inset: -60% -20% auto;
  height: 320px;
  background: radial-gradient(
    50% 60% at 50% 40%,
    color-mix(in srgb, var(--accent) 16%, transparent),
    transparent 70%
  );
  pointer-events: none;
}

.contact-panel > * {
  position: relative;
}

.contact-panel h2 {
  font-size: clamp(22px, 3vw, 30px);
}

.contact-panel p {
  color: var(--muted);
  margin: var(--s-2) auto 0;
  max-width: 52ch;
}

.contact-panel .btn {
  margin-top: var(--s-3);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding-block: var(--s-4);
  color: var(--muted);
  font-size: 14px;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-2) var(--s-3);
}

.site-footer nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

/* ---------- legal (privacy) ---------- */

.legal {
  max-width: 760px;
  padding-block: var(--s-5) var(--s-6);
}

.legal h1 {
  font-size: clamp(26px, 4vw, 36px);
}

.legal .updated {
  margin-top: var(--s-2);
  color: var(--muted);
  font-size: 14px;
}

.legal h2 {
  font-size: 19px;
  margin-top: var(--s-4);
  padding-top: var(--s-3);
  border-top: 1px solid var(--border-soft);
}

.legal h3 {
  font-size: 16px;
  margin-top: var(--s-3);
}

.legal p,
.legal li {
  font-size: 15px;
}

.legal ul {
  padding-left: 1.3em;
}

.legal li {
  margin-block: 6px;
}

.legal .contact-box {
  margin-top: var(--s-3);
  padding: var(--s-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
}

.legal .contact-box p {
  margin: 0;
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .company {
    grid-template-columns: 1fr;
    gap: var(--s-3);
  }
}

@media (max-width: 720px) {
  :root {
    --s-6: 64px;
    --s-5: 44px;
  }

  .nav a:not(.btn):not(.lang-switch) {
    display: none;
  }

  .lang-switch span {
    display: none;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .spec > div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .site-footer nav {
    margin-left: 0;
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}