*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  isolation: isolate;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; }

#cursor-spotlight {
  position: fixed;
  top: 0; left: 0;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}
.reveal.revealed { opacity: 1; transform: translateY(0); }

#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition:
    background var(--transition-slow),
    border-color var(--transition-slow),
    backdrop-filter var(--transition-slow);
}

#main-nav.nav--scrolled {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom-color: var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
  height: 100%;
  gap: var(--space-4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: var(--font-size-base);
  letter-spacing: -.025em;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo svg {
  width: 28px; height: 28px;
  border-radius: 7px;
  box-shadow: 0 2px 8px var(--color-accent-glow);
}

.nav-controls { display: flex; align-items: center; gap: var(--space-3); }

.lang-toggle {
  display: flex;
  gap: 2px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-full);
  padding: 3px;
  border: 1px solid var(--color-border-solid);
}

.lang-toggle button {
  background: none; border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  transition: background var(--transition), color var(--transition);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.lang-toggle button.active { background: var(--gradient-brand); color: #fff; }

#theme-toggle {
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border-solid);
  cursor: pointer;
  font-size: 15px;
  color: var(--color-text-secondary);
  width: 34px; height: 34px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}

#theme-toggle:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-text);
  color: var(--color-bg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  text-decoration: none;
  letter-spacing: -.01em;
  transition: opacity var(--transition), transform var(--transition);
  white-space: nowrap;
}

.nav-cta:hover { opacity: .80; transform: translateY(-1px); text-decoration: none; }

@media (max-width: 540px) { .nav-cta { display: none; } }

.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + var(--space-16)) var(--space-6) var(--space-24);
  background-color: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow-strong) 0%, transparent 65%);
  top: 50%; left: 50%;
  transform: translate(-50%, -55%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

.hero-content { position: relative; z-index: 1; max-width: 760px; }

.hero-icon-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-8);
}

.hero-halo {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow-strong) 0%, transparent 70%);
  animation: halo-pulse 3s ease-in-out infinite;
}

@keyframes halo-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1);    }
  50%       { opacity: 1.0; transform: scale(1.15); }
}

.hero-icon {
  width: 96px; height: 96px;
  border-radius: 22px;
  position: relative;
  z-index: 1;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.10),
    var(--shadow-lg);
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.hero h1 {
  font-size: var(--font-size-hero);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1.0;
  margin-bottom: var(--space-5);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@supports not (-webkit-background-clip: text) {
  .hero h1 { color: var(--color-accent); -webkit-text-fill-color: unset; }
}

.hero-sub {
  font-size: clamp(var(--font-size-lg), 2.5vw, var(--font-size-xl));
  font-weight: 300;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  letter-spacing: -.01em;
  max-width: 420px;
  margin-inline: auto;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.btn-appstore {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--font-size-base);
  padding: 18px 36px;
  border-radius: var(--radius-xl);
  text-decoration: none;
  letter-spacing: -.015em;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s var(--ease-out), opacity var(--transition);
}

.btn-appstore:hover {
  transform: scale(1.03) translateY(-2px);
  box-shadow: 0 24px 60px rgba(0,0,0,.18);
  opacity: .92;
  text-decoration: none;
}

.btn-appstore svg { width: 22px; height: 22px; fill: currentColor; flex-shrink: 0; }

.hero-note {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: -.005em;
}

.scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  letter-spacing: .08em;
  text-transform: uppercase;
  animation: bounce 2.5s ease-in-out infinite;
}

.scroll-hint svg { width: 16px; height: 16px; stroke: currentColor; fill: none; }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: .5; }
  50%       { transform: translateX(-50%) translateY(6px); opacity: 1; }
}

.features {
  padding: var(--space-24) var(--space-6);
  background: var(--color-bg-alt);
  position: relative;
  z-index: 1;
}

.section-eyebrow {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-accent);
  text-align: center;
  margin-bottom: var(--space-4);
}

.section-heading {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.1;
  text-align: center;
  color: var(--color-text);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.bento-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  max-width: var(--max-width);
  margin-inline: auto;
}

@media (max-width: 680px) {
  .bento-grid { grid-template-columns: 1fr; }
}

.spotlight-card {
  position: relative;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border-solid);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  overflow: hidden;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s var(--ease-out), border-color var(--transition);
  --mouse-x: 50%;
  --mouse-y: 50%;
}

.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    400px circle at var(--mouse-x) var(--mouse-y),
    var(--color-accent-glow) 0%,
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
  pointer-events: none;
  z-index: 0;
  border-radius: inherit;
}

.spotlight-card--active::before { opacity: 1; }

.spotlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.spotlight-card > * { position: relative; z-index: 1; }

.bento-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 720;
  letter-spacing: -.025em;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.bento-card p {
  font-size: var(--font-size-base);
  font-weight: 400;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.statement {
  padding: var(--space-32) var(--space-6);
  background: var(--color-bg);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.statement::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.statement-inner { position: relative; z-index: 1; }

.statement-line {
  display: block;
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1.05;
  color: var(--color-text);
}

.statement-line--accent {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@supports not (-webkit-background-clip: text) {
  .statement-line--accent { color: var(--color-accent); -webkit-text-fill-color: unset; }
}

.how {
  padding: var(--space-24) var(--space-6);
  background: var(--color-bg-alt);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-8);
  max-width: var(--max-width);
  margin-inline: auto;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 3rem;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--color-accent) 20%,
    var(--color-accent) 80%,
    transparent 100%);
  opacity: .25;
  pointer-events: none;
}

@media (max-width: 600px) { .steps-grid::before { display: none; } }

.step { display: flex; flex-direction: column; gap: var(--space-5); }

.step-num-wrap {
  position: relative;
  width: fit-content;
}

.step-num-bg {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 8rem;
  font-weight: 900;
  letter-spacing: -.05em;
  color: var(--color-accent);
  opacity: .07;
  line-height: 1;
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
}

.step-number {
  position: relative;
  z-index: 1;
  width: 44px; height: 44px;
  border-radius: var(--radius-full);
  background: var(--gradient-brand);
  color: #fff;
  font-weight: 800;
  font-size: var(--font-size-base);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px var(--color-accent-glow);
  outline: 3px solid var(--color-bg-alt);
}

.step-body h3 {
  font-size: var(--font-size-xl);
  font-weight: 720;
  letter-spacing: -.025em;
  margin-bottom: var(--space-2);
}

.step-body p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.75;
}

footer {
  border-top: 1px solid var(--color-border-solid);
  padding-block: var(--space-6);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  letter-spacing: -.005em;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.footer-links li + li::before {
  content: "|";
  color: var(--color-border-solid);
  margin-right: var(--space-4);
}

.footer-links a {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-accent); text-decoration: none; }