:root {
  --bg: #08080c;
  --bg-2: #0f0f16;
  --card: #14141d;
  --card-2: #1a1a26;
  --text: #f5f5f7;
  --muted: #a1a1b0;
  --line: rgba(255, 255, 255, 0.08);
  --grad: linear-gradient(90deg, #ff8a3d 0%, #ff5f9e 32%, #a45cff 62%, #4cc9f0 100%);
  --grad-soft: linear-gradient(135deg, rgba(255, 95, 158, 0.16), rgba(164, 92, 255, 0.16), rgba(76, 201, 240, 0.14));
  --radius: 20px;
  --maxw: 1180px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Poppins", var(--font);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--grad);
  color: #0b0b0f;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255, 95, 158, 0.35); }
.btn--sm { padding: 9px 18px; font-size: 14px; }

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 11px 20px;
  border-radius: 14px;
  background: #16161f;
  border: 1px solid var(--line);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.store-btn:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, 0.25); background: #1c1c28; }
.store-btn__text { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.store-btn__text small { font-size: 10px; letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; }
.store-btn__text strong { font-family: var(--display); font-size: 17px; font-weight: 600; }
.store-btn--soon { opacity: 0.55; cursor: default; }
.store-btn--soon:hover { transform: none; border-color: var(--line); background: #16161f; }

/* ===== NAV ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(8, 8, 12, 0.6);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.nav.is-scrolled { background: rgba(8, 8, 12, 0.9); border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 9px; }
.brand__mark { display: inline-flex; }
.brand__name { font-family: var(--display); font-weight: 500; font-size: 20px; letter-spacing: -0.01em; }
.brand__name b { font-weight: 700; }

.nav__links { display: flex; gap: 28px; }
.nav__links a { font-size: 15px; color: var(--muted); transition: color 0.2s ease; }
.nav__links a:hover { color: var(--text); }

.nav__actions { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  background: #16161f;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  cursor: pointer;
}
.lang-toggle__opt {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  padding: 4px 11px;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}
.lang-toggle__opt.is-active { color: #0b0b0f; background: var(--grad); }

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav__burger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero { position: relative; padding: 72px 0 60px; overflow: hidden; }
.hero__glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  background: radial-gradient(closest-side, rgba(164, 92, 255, 0.22), rgba(255, 95, 158, 0.1) 45%, transparent 70%);
  filter: blur(30px);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero__title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.hero__title span { display: block; }
.hero__sub { font-size: 18px; color: var(--muted); max-width: 520px; margin-bottom: 30px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__note { margin-top: 16px; font-size: 13px; color: var(--muted); }
.hero__art { position: relative; }
.hero__art img {
  border-radius: 24px;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.6));
}

/* ===== SECTIONS ===== */
.section { padding: 90px 0; }
.section__head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section__head h2 { font-family: var(--display); font-weight: 700; font-size: clamp(28px, 4vw, 44px); line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 14px; }
.section__head p { color: var(--muted); font-size: 18px; }

/* ===== PILLARS ===== */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.pillar {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.pillar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.pillar > * { position: relative; }
.pillar:hover { transform: translateY(-6px); border-color: rgba(255, 255, 255, 0.18); }
.pillar:hover::before { opacity: 1; }
.pillar__num { font-family: var(--display); font-weight: 800; font-size: 15px; letter-spacing: 0.1em; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.pillar h3 { font-family: var(--display); font-weight: 600; font-size: 22px; margin: 14px 0 10px; }
.pillar p { color: var(--muted); font-size: 15px; }

/* ===== FEATURE ROWS ===== */
.feature__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature--right .feature__art { order: 2; }
.feature__art { display: flex; justify-content: center; }
.feature__art img {
  max-height: 560px;
  width: auto;
  border-radius: 22px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}
.feature__copy h2 { font-family: var(--display); font-weight: 700; font-size: clamp(30px, 4.5vw, 48px); line-height: 1.08; letter-spacing: -0.02em; margin-bottom: 18px; }
.feature__copy h2 span { display: inline; }
.feature__copy p { color: var(--muted); font-size: 18px; max-width: 460px; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.tags li {
  font-size: 14px;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 999px;
  background: var(--card-2);
  border: 1px solid var(--line);
  color: var(--text);
}

/* ===== DUO CARDS ===== */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.duo__card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.duo__card:hover { transform: translateY(-6px); border-color: rgba(255, 255, 255, 0.18); }
.duo__art { display: flex; justify-content: center; padding: 30px 30px 0; background: radial-gradient(120% 80% at 50% 0%, rgba(164, 92, 255, 0.14), transparent 60%); }
.duo__art img { max-height: 440px; width: auto; border-radius: 18px 18px 0 0; }
.duo__body { padding: 26px 30px 32px; }
.duo__body h3 { font-family: var(--display); font-weight: 700; font-size: 26px; margin-bottom: 10px; }
.duo__body p { color: var(--muted); font-size: 16px; }

/* ===== CTA ===== */
.cta { position: relative; text-align: center; overflow: hidden; }
.cta__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 60% at 50% 50%, rgba(255, 95, 158, 0.16), rgba(76, 201, 240, 0.08) 50%, transparent 75%);
  pointer-events: none;
}
.cta__inner { position: relative; }
.cta__title { font-family: var(--display); font-weight: 800; font-size: clamp(34px, 5.5vw, 60px); letter-spacing: -0.02em; margin-bottom: 16px; }
.cta__sub { color: var(--muted); font-size: 19px; margin-bottom: 34px; }
.cta__buttons { justify-content: center; }

/* ===== FOOTER ===== */
.footer { border-top: 1px solid var(--line); padding: 44px 0; background: var(--bg-2); }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.footer__tag { font-family: var(--display); font-weight: 600; font-size: 18px; }
.footer__copy { color: var(--muted); font-size: 14px; }

/* ===== REVEAL ANIMATION (only when JS is active) ===== */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero__copy { display: flex; flex-direction: column; align-items: center; }
  .hero__cta { justify-content: center; }
  .hero__art { max-width: 420px; margin: 0 auto; }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .feature__inner { grid-template-columns: 1fr; gap: 34px; text-align: center; }
  .feature--right .feature__art { order: 0; }
  .feature__copy { display: flex; flex-direction: column; align-items: center; }
  .tags { justify-content: center; }
  .duo { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
}

@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: 66px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 10, 16, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__links a { padding: 14px 24px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .nav__links a:last-child { border-bottom: none; }
  .nav__burger { display: flex; }
  .nav__actions .btn { display: none; }
  .section { padding: 64px 0; }
  .pillars { grid-template-columns: 1fr; }
  .hero__sub, .section__head p, .feature__copy p, .cta__sub { font-size: 16px; }
}