/* =========================================================================
   Coyote intro site — dark + cyan, glassmorphism. No build step.
   Palette tokens mirror the YATA corporate site for family consistency.
   ========================================================================= */

:root {
  /* backgrounds */
  --bg-deep: #05070a;
  --bg-panel: #08090b;

  /* accents */
  --cyan: #42d7ff;
  --cyan-bright: #78e6ff;
  --blue-electric: #3a7bff;

  /* ink */
  --ink: #eaf4ff;
  --ink-muted: rgba(234, 244, 255, 0.62);
  --ink-faint: rgba(234, 244, 255, 0.4);

  /* glass */
  --glass-bg: rgba(12, 18, 26, 0.42);
  --glass-border: rgba(120, 230, 255, 0.16);
  --glass-blur: 18px;

  --maxw: 1080px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", "Hiragino Sans", "Noto Sans JP", Meiryo, sans-serif;
}

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

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

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

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 600px at 75% -10%, rgba(58, 123, 255, 0.18), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(66, 215, 255, 0.12), transparent 55%),
    var(--bg-deep);
  color: var(--ink);
  font-family: var(--font-sans);
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------------------------------------------------------------- nav --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand img {
  width: 28px;
  height: 28px;
}

.nav nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--ink-muted);
}

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

.login {
  color: var(--cyan) !important;
}

.lang-toggle {
  font: inherit;
  font-size: 13px;
  color: var(--ink-muted);
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 5px 10px;
  cursor: pointer;
}

.lang-toggle:hover {
  color: var(--ink);
  border-color: rgba(120, 230, 255, 0.4);
}

/* --------------------------------------------------------------- hero --- */
.hero {
  text-align: center;
  padding: 64px 0 32px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 7px 16px;
  font-size: 13.5px;
  color: var(--cyan-bright);
  background: rgba(66, 215, 255, 0.08);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
}

.hero h1 {
  margin: 0 auto 20px;
  max-width: 20ch;
  font-size: clamp(30px, 5.2vw, 52px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  /* Break Japanese headlines at phrase boundaries, not mid-word. */
  word-break: auto-phrase;
  line-break: strict;
}

.hero h1 .accent {
  background: linear-gradient(90deg, var(--cyan-bright), var(--blue-electric));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  margin: 0 auto;
  max-width: 60ch;
  font-size: clamp(15px, 2vw, 18px);
  color: var(--ink-muted);
}

.lead strong {
  color: var(--ink);
  font-weight: 700;
}

.subnote {
  margin: 14px auto 0;
  font-size: 13.5px;
  color: var(--ink-faint);
}

.shot {
  margin: 44px auto 0;
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 40px 120px -30px rgba(58, 123, 255, 0.5),
    0 10px 40px -10px rgba(0, 0, 0, 0.7);
}

/* --------------------------------------------------------- section --- */
section {
  padding: 56px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section-head p {
  margin: 0 auto;
  max-width: 56ch;
  color: var(--ink-muted);
  font-size: 15px;
}

/* glass card grid */
.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
}

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

.card {
  padding: 26px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  backdrop-filter: blur(var(--glass-blur));
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: rgba(120, 230, 255, 0.42);
  transform: translateY(-2px);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.card .tag {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--cyan-bright);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 14.5px;
}

/* ------------------------------------------------------------ footer --- */
footer {
  border-top: 1px solid rgba(120, 230, 255, 0.1);
  padding: 32px 0 48px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 13.5px;
}

footer a {
  color: var(--ink-muted);
}

footer a:hover {
  color: var(--cyan);
}

footer .foot-links {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin-bottom: 12px;
}

/* --------------------------------------------------------- responsive --- */
@media (max-width: 760px) {
  .grid,
  .grid.cols-3 {
    grid-template-columns: 1fr;
  }

  .nav nav {
    gap: 14px;
  }

  .hero {
    padding: 40px 0 16px;
  }
}