/* Base */
:root {
  --bg: #0b0f14;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #e6edf3;
  --muted: #9aa9b8;
  --accent-start: #7c3aed;
  --accent-end: #06b6d4;
  --accent: linear-gradient(135deg, var(--accent-start), var(--accent-end));
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: linear-gradient(180deg, #0b0f14 0%, #0e1320 55%, #0b0f14 100%);
}

/* Containers */
.container { width: min(1120px, 100% - 48px); margin-inline: auto; }
.section { padding: 72px 0; }
.section-banner { padding: 16px 0; }
.section-alt { background: rgba(255,255,255,0.02); backdrop-filter: blur(6px); }
.section-title { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 28px; }
@media (max-width: 640px) {
  .section-banner { padding: 8px 0; }
}

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(140%) blur(10px); background: rgba(11,15,20,0.65); border-bottom: 1px solid rgba(255,255,255,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.logo-mark { width: 36px; height: 36px; border-radius: 10px; background: var(--accent); display: grid; place-items: center; font-weight: 800; }
.logo-text { font-weight: 700; letter-spacing: -0.02em; }
.nav { display: flex; align-items: center; gap: 16px; }
.nav-link { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav-link:hover { color: var(--text); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--card-border); border-radius: 12px; padding: 10px 16px; text-decoration: none; color: var(--text); transition: transform .12s ease, box-shadow .12s ease, background .12s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(6,182,212,0.18); }
.btn-primary { background: var(--accent); border: none; font-weight: 700; }
.btn-ghost { background: rgba(255,255,255,0.04); }
.btn-lg { padding: 14px 20px; border-radius: 14px; }

/* Hero */
.hero { position: relative; overflow: hidden; }
.hero-inner { padding: 72px 0 64px; text-align: center; }
.hero-title { font-size: clamp(36px, 6vw, 64px); margin: 0 0 12px; font-weight: 800; letter-spacing: -0.03em; }
.accent { background: var(--accent); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { color: var(--muted); font-size: 18px; max-width: 760px; margin: 0 auto 24px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; }
.hero-bg { position: absolute; inset: -20% -10% auto -10%; height: 380px; background: radial-gradient(600px 220px at 40% 50%, rgba(124,58,237,0.2), transparent 60%), radial-gradient(520px 220px at 60% 50%, rgba(6,182,212,0.2), transparent 60%); filter: blur(30px); z-index: -1; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { border: 1px solid var(--card-border); background: var(--card); border-radius: 16px; padding: 24px; box-shadow: inset 0 1px 0 rgba(255,255,255,0.08); }
.card-icon { font-size: 28px; }
.card-title { margin: 12px 0 8px; font-size: 20px; font-weight: 700; }
.card-text { color: var(--muted); line-height: 1.6; }
.cards-cta { margin-top: 20px; display: flex; justify-content: center; }

/* Rules */
.rules { display: grid; gap: 10px; padding: 0; margin: 0 0 16px; list-style: none; }
.rules li { border: 1px dashed rgba(255,255,255,0.16); background: rgba(255,255,255,0.03); padding: 14px 16px; border-radius: 12px; }
.note { color: var(--muted); }

/* CTA */
.cta { display: grid; place-items: center; text-align: center; gap: 12px; background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; padding: 28px; }
.cta-title { margin: 0; font-size: 24px; font-weight: 800; }

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; }
.footer-right a { color: var(--muted); text-decoration: none; }
.footer-right a:hover { color: var(--text); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity .3s ease, transform .3s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) {
  .nav { display: none; }
  .cards { grid-template-columns: 1fr; }
  .hero-inner { padding: 56px 0 48px; }
  .hero-bg { height: 240px; inset: -6% -12% auto -12%; filter: blur(24px); }
}

/* Link copy styles */
.link-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--card-border);
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  transition: background .15s ease, color .15s ease, transform .12s ease, box-shadow .12s ease;
}
.link-copy::before { content: "📋"; font-size: 16px; }
.link-copy:hover { background: var(--accent); color: #fff; border: none; box-shadow: 0 8px 24px rgba(6,182,212,0.18); }
.link-copy:active { transform: translateY(1px); }
.link-copy.copied { background: #16a34a; border: none; color: #fff; }
.link-copy.copied::before { content: "✔"; }

/* SEO section */
.section-seo { background: rgba(255,255,255,0.02); }
.seo-lead { color: var(--muted); font-size: 17px; line-height: 1.75; margin: 0 0 18px; }
.seo-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; margin: 18px 0 22px; }
/* Placement rules for SEO cards */
.seo-grid .seo-block { grid-column: span 4; }
.seo-grid .seo-block:nth-last-child(-n+2) { grid-column: span 6; }
/* Styling for SEO cards */
.seo-block {
  position: relative;
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 16px;
  padding: 20px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 12px 28px rgba(6,182,212,0.10);
  backdrop-filter: blur(4px);
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
  background-image: radial-gradient(220px 100px at 85% 0%, rgba(124,58,237,0.14), transparent 70%), radial-gradient(220px 100px at 15% 100%, rgba(6,182,212,0.12), transparent 70%);
  background-blend-mode: lighten;
}
.seo-block::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
}
.seo-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(6,182,212,0.16), inset 0 1px 0 rgba(255,255,255,0.08);
}
.seo-block:focus-within {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.20), 0 16px 36px rgba(6,182,212,0.16), inset 0 1px 0 rgba(255,255,255,0.08);
}
.seo-block h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.seo-block h3::after {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 8px;
}
.seo-block p { color: var(--muted); line-height: 1.75; }

/* Spoiler component */
.spoiler {
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 16px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
  margin-top: 18px;
}
.spoiler summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.spoiler summary::-webkit-details-marker { display: none; }
.spoiler summary::before {
  content: "";
  width: 10px;
  height: 10px;
  border-right: 2px solid rgba(255,255,255,0.6);
  border-bottom: 2px solid rgba(255,255,255,0.6);
  transform: rotate(45deg);
  transition: transform .2s ease;
}
.spoiler[open] summary::before { transform: rotate(225deg); }
.spoiler summary:focus-visible {
  outline: 2px solid rgba(255,255,255,0.35);
  outline-offset: 2px;
  border-radius: 12px;
}
.spoiler .show { display: inline; }
.spoiler .hide { display: none; }
.spoiler[open] .show { display: none; }
.spoiler[open] .hide { display: inline; }
.spoiler .seo-longform { padding: 0 16px 16px; }

@media (max-width: 640px) {
  .spoiler { border-radius: 14px; }
  .spoiler summary { padding: 12px 14px; font-size: 16px; }
}

@media (max-width: 1024px) { .seo-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) {
  .seo-grid { grid-template-columns: 1fr; }
  .seo-block { padding: 14px; border-radius: 14px; }
  .seo-block h3::after { width: 36px; height: 2px; }
}

/* Countdown styles */
.countdown {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--card-border);
  box-shadow: 0 12px 32px rgba(124,58,237,0.15), inset 0 1px 0 rgba(255,255,255,0.08);
  position: relative;
}
.countdown::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
}
.count-box {
  display: grid;
  place-items: center;
  min-width: 72px;
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--card-border);
}
.count-value {
  font-size: clamp(24px, 6vw, 36px);
  font-weight: 800;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  text-shadow: 0 0 16px rgba(124,58,237,0.35);
}
.count-label {
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.count-sep {
  font-size: clamp(24px, 6vw, 32px);
  opacity: 0.7;
  animation: sepPulse 1s infinite alternate ease-in-out;
}
@keyframes sepPulse {
  from { transform: translateY(0); opacity: .6; }
  to   { transform: translateY(-2px); opacity: 1; }
}
.countdown.finished {
  background: rgba(22,163,74,0.12);
  border-color: rgba(22,163,74,0.35);
}

/* Promo banner */
.banner {
  position: relative;
  overflow: hidden;
  margin: 0;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--card-border);
  box-shadow: 0 16px 40px rgba(6,182,212,0.12), inset 0 1px 0 rgba(255,255,255,0.08);
}
.banner::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
}
.banner-img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  object-position: right center;
  border-radius: inherit;
  filter: saturate(105%) contrast(102%);
}
/* Banner caption overlay */
.banner-caption {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  max-width: clamp(220px, 32%, 360px);
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(11,15,20,0.55);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(6px);
  box-shadow: 0 12px 28px rgba(6,182,212,0.12), inset 0 1px 0 rgba(255,255,255,0.08);
}
.banner-caption::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
}
.banner-caption-title { margin: 0; font-size: clamp(18px, 3.2vw, 24px); font-weight: 800; letter-spacing: -0.02em; }
@media (max-width: 640px) {
  .banner { border-radius: 14px; }
  .banner-img { aspect-ratio: 16/9; object-position: 85% center; }
  .banner-caption { left: 12px; right: 12px; top: auto; bottom: 12px; transform: none; padding: 10px 12px; max-width: none; }
  .banner-caption-title { font-size: 16px; }
}

/* Responsive tweaks for countdown */
@media (max-width: 640px) {
  .countdown { gap: 8px; padding: 8px 10px; }
  .count-box { min-width: 56px; padding: 6px 8px; }
  .count-value { font-size: clamp(18px, 7vw, 26px); }
  .count-label { font-size: 10px; letter-spacing: 0.06em; }
}
@media (max-width: 400px) {
  .countdown { flex-wrap: wrap; justify-content: center; gap: 8px; }
  .count-sep { display: none; }
  .count-label { display: none; }
  .count-box { min-width: 58px; }
}
@media (max-width: 340px) {
  .count-box { min-width: 52px; }
}