:root {
  --bg: #0b0f1a;
  --bg-2: #0f1626;
  --text: #e8ecff;
  --muted: #a6b1e1;
  --primary: #7aa2ff;
  --primary-2: #9b8cff;
  --accent: #00e5ff;
  --danger: #ff6b6b;
  --glass: rgba(255,255,255,0.08);
  --glass-2: rgba(255,255,255,0.04);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}
* { box-sizing: border-box; }
html, body { height: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Poppins, "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 80% -10%, rgba(122,162,255,0.25), transparent),
              radial-gradient(800px 400px at 10% 0%, rgba(155,140,255,0.22), transparent),
              var(--bg);
}
img { max-width: 100%; display: block; }
.container { width: min(1200px, 92%); margin: 0 auto; }
.section { padding: 100px 0; position: relative; }
.section--glass { background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0)); backdrop-filter: blur(6px); border-top: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }
.section__title { font-size: 36px; margin: 0 0 16px; letter-spacing: 0.5px; }
.section__title.center { text-align: center; }

.bg-video { position: fixed; inset: 0; z-index: -2; overflow: hidden; }
.bg-video__media { position: absolute; top: 50%; left: 50%; min-width: 100%; min-height: 100%; width: auto; height: auto; transform: translate(-50%, -50%); filter: saturate(1.15) contrast(1.05) brightness(0.65); opacity: 0.7; }
.bg-video__overlay { position: absolute; inset: 0; background: radial-gradient(1200px 600px at 70% -10%, rgba(122,162,255,0.3), transparent), linear-gradient(180deg, rgba(11,15,26,0.6), rgba(11,15,26,0.9)); mix-blend-mode: screen; pointer-events: none; }

.nav { position: sticky; top: 0; z-index: 20; background: rgba(11,15,26,0.6); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255,255,255,0.08); transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease; }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; transition: height 220ms ease; }
.nav.is-scrolled { background: rgba(11,15,26,0.82); border-bottom-color: rgba(255,255,255,0.12); box-shadow: 0 8px 28px rgba(0,0,0,0.35); backdrop-filter: blur(12px); }
.nav.is-scrolled .nav__inner { height: 56px; }
.nav__brand { will-change: transform; transition: transform 220ms ease, opacity 220ms ease; }
.nav.is-scrolled .nav__brand { transform: translateY(-1px) scale(0.98); opacity: 0.95; }
.nav__brand { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: 0.5px; }
.nav__menu { display: flex; gap: 18px; align-items: center; position: relative; }
.nav__link { color: var(--muted); text-decoration: none; font-weight: 500; padding: 8px 10px; border-radius: 8px; transition: 200ms ease; }
.nav__link:hover { color: var(--text); background: var(--glass-2); }
.nav__link { position: relative; }
.nav__link::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 4px; height: 2px; background: linear-gradient(90deg, transparent, var(--accent), transparent); transform: scaleX(0); transform-origin: center; transition: transform 220ms ease; }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--text); background: rgba(255,255,255,0.08); }
.nav__link.is-active::after { transform: scaleX(1); background: linear-gradient(90deg, transparent, var(--primary), transparent); }
.nav__indicator { position: absolute; bottom: 6px; height: 2px; width: 0; background: linear-gradient(90deg, var(--accent), var(--primary)); border-radius: 2px; box-shadow: 0 0 12px rgba(122,162,255,0.6); transition: left 220ms ease, width 220ms ease, opacity 200ms ease; opacity: 0.9; pointer-events: none; }
.nav__toggle { display: none; background: none; border: 0; color: var(--text); font-size: 22px; }

.btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: 14px; text-decoration: none; font-weight: 700; letter-spacing: 0.2px; transition: transform 150ms ease, box-shadow 200ms ease, background 200ms ease; border: 1px solid rgba(255,255,255,0.12); }
.btn--primary { color: #0b0f1a; background: linear-gradient(135deg, var(--accent), var(--primary)); box-shadow: 0 10px 25px rgba(122,162,255,0.35), inset 0 1px 0 rgba(255,255,255,0.35); position: relative; overflow: hidden; }
.btn--primary:hover { transform: translateY(-2px); }
.btn--primary::before { content: ""; position: absolute; inset: 0; background: radial-gradient(200px 80px at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,0.35), transparent 45%); transition: 120ms ease; pointer-events: none; }
.btn--ghost { color: var(--text); background: rgba(255,255,255,0.04); }
.btn--ghost:hover { background: rgba(255,255,255,0.08); }
.btn--download { color: #0b0f1a; background: linear-gradient(135deg, #a6ffea, #60a5fa); box-shadow: 0 8px 18px rgba(96,165,250,0.35); padding: 10px 14px; }
.btn--xl { padding: 14px 22px; font-size: 18px; }
.btn--glow { position: relative; }
.btn--glow::after { content: ""; position: absolute; inset: -2px; border-radius: 16px; background: radial-gradient(120px 50px at 20% 20%, rgba(255,255,255,0.4), transparent 40%), radial-gradient(120px 50px at 80% 80%, rgba(255,255,255,0.35), transparent 40%); filter: blur(12px); z-index: -1; opacity: 0.6; }
.btn--glow { animation: btnPulse 3.2s ease-in-out infinite; }

.hero { display: grid; place-items: center; min-height: 92vh; text-align: center; }
.hero__inner { max-width: 900px; animation: fadeUp 700ms ease both; }
.hero__title { font-size: clamp(34px, 6vw, 72px); line-height: 1.05; margin: 0; text-shadow: 0 6px 30px rgba(0,0,0,0.5); }
.hero__title span { background: linear-gradient(135deg, var(--accent), var(--primary)); -webkit-background-clip: text; background-clip: text; color: transparent; filter: drop-shadow(0 6px 30px rgba(122,162,255,0.35)); text-shadow: none; }
.hero__subtitle { font-size: 18px; color: var(--muted); margin: 14px 0 26px; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.hero__badges { display: flex; gap: 10px; justify-content: center; margin-top: 18px; }
.badge { padding: 6px 10px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 999px; color: var(--muted); font-size: 13px; }

.particles::before, .particles::after { content: ""; position: absolute; inset: -20px; background: radial-gradient(2px 2px at 20% 30%, rgba(255,255,255,0.6), transparent), radial-gradient(2px 2px at 60% 70%, rgba(255,255,255,0.5), transparent), radial-gradient(1.5px 1.5px at 80% 20%, rgba(255,255,255,0.35), transparent), radial-gradient(1.5px 1.5px at 30% 80%, rgba(255,255,255,0.35), transparent); animation: twinkle 6s linear infinite; opacity: 0.6; pointer-events: none; }

/* Parallax deco */
.parallax { position: absolute; inset: 0; pointer-events: none; }
.p-dot, .p-line { position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%) translate3d(var(--tx, 0), var(--ty, 0), 0); transition: transform 120ms ease-out; }
.p-dot { width: 8px; height: 8px; background: radial-gradient(circle at 30% 30%, #fff, rgba(255,255,255,0.2)); border-radius: 50%; box-shadow: 0 0 18px rgba(122,162,255,0.6); opacity: 0.8; }
.p-line { width: 120px; height: 2px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.7), transparent); filter: blur(0.3px); opacity: 0.6; }

.cols { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }

.card { border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); }
.card--glass { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); }
.card--shine { position: relative; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.12); }
.card--shine::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, transparent, rgba(255,255,255,0.12), transparent); transform: translateX(-100%); animation: shine 6s ease-in-out infinite; }

.about__art img { width: 100%; height: auto; object-fit: cover; display: block; }

.features { margin-top: 24px; }
.feature { padding: 24px; text-align: center; transform: translateY(6px); transition: transform 200ms ease; }
.feature:hover { transform: translateY(0); }
.feature__icon { font-size: 34px; color: var(--accent); margin-bottom: 10px; }

.accordion { max-width: 900px; margin: 0 auto; display: grid; gap: 10px; }
.accordion__item { border-radius: 14px; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.04); overflow: hidden; }
.accordion__header { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; background: transparent; border: 0; color: var(--text); font-weight: 600; text-align: left; cursor: pointer; }
.accordion__header i { transition: transform 200ms ease; }
.accordion__header[aria-expanded="true"] i { transform: rotate(45deg); }
.accordion__panel { padding: 0 18px; color: var(--muted); overflow: hidden; height: 0; transition: height 300ms ease; }
.accordion__panel .ticks { padding-bottom: 16px; }

.download { display: grid; grid-template-columns: 1.1fr 1fr; gap: 34px; align-items: center; }
.download__content p { color: var(--muted); }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; }
.download__art img { width: 100%; height: auto; object-fit: cover; }

.form { display: grid; gap: 14px; }
.field { display: grid; gap: 8px; }
.field input, .field textarea { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 12px; padding: 12px 14px; color: var(--text); outline: none; }
.field input::placeholder, .field textarea::placeholder { color: #c8d0ff88; }

.contact__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; color: var(--muted); }
.contact__list a { color: var(--text); }

.footer { border-top: 1px solid rgba(255,255,255,0.08); background: rgba(11,15,26,0.6); backdrop-filter: blur(8px); padding: 20px 0; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--muted); }
.footer__links { display: flex; gap: 12px; }
.footer__links a { color: var(--muted); text-decoration: none; }

.reveal { opacity: 0; transform: translateY(12px); }
.reveal.is-visible { opacity: 1; transform: translateY(0); transition: 600ms ease; }

@keyframes shine { 0% { transform: translateX(-120%); } 60% { transform: translateX(120%); } 100% { transform: translateX(120%); } }
@keyframes twinkle { 0%, 100% { opacity: 0.4; } 50% { opacity: 0.9; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px);} to { opacity: 1; transform: translateY(0);} }
@keyframes btnPulse { 0%, 100% { box-shadow: 0 10px 25px rgba(122,162,255,0.35), inset 0 1px 0 rgba(255,255,255,0.35);} 50% { box-shadow: 0 14px 35px rgba(122,162,255,0.5), inset 0 1px 0 rgba(255,255,255,0.45);} }

@media (max-width: 980px) {
  .cols { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .download { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__menu { position: fixed; right: 16px; top: 72px; background: rgba(11,15,26,0.9); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.08); padding: 14px; border-radius: 14px; flex-direction: column; gap: 8px; display: none; }
  .nav__menu.is-open { display: flex; }
  .nav__indicator { display: none; }
  .grid { grid-template-columns: 1fr; }
}