/* ── Reset & Base ─────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --red:    #E63946;
  --red-d:  #B71C1C;
  --red-l:  #FF6B6B;
  --black:  #0A0A0A;
  --black2: #111111;
  --black3: #1A1A1A;
  --grey:   #2A2A2A;
  --grey-l: #3A3A3A;
  --white:  #F5F5F5;
  --muted:  #9E9E9E;
  --gold:   #FFD700;
}
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--black);
  color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: 'Playfair Display', serif; line-height: 1.2; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Utility ──────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section   { padding: 120px 0; position: relative; }
.accent    { color: var(--red); }
.muted     { color: var(--muted); font-size: 0.875rem; }
.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--red);
  border: 1px solid var(--red);
  padding: 6px 16px;
  border-radius: 40px;
  margin-bottom: 20px;
}

/* ── CTA Button ───────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 18px 44px;
  border: none;
  border-radius: 60px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--red), var(--red-d));
  color: #fff;
  box-shadow: 0 4px 30px rgba(230, 57, 70, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(230, 57, 70, 0.55);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--grey-l);
}
.btn-outline:hover {
  border-color: var(--red);
  color: var(--red);
}

/* ── Floating Suit Symbols ────────────────────────── */
.suits-bg {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0;
}
.suits-bg span {
  position: absolute;
  font-size: 120px;
  opacity: 0.025;
  animation: floatSuit 20s infinite linear;
}
@keyframes floatSuit {
  0%   { transform: translateY(0) rotate(0deg); }
  50%  { transform: translateY(-40px) rotate(10deg); }
  100% { transform: translateY(0) rotate(0deg); }
}

/* ── NAV ──────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 20px 0;
  background: rgba(10,10,10,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: padding 0.3s;
}
nav.scrolled { padding: 12px 0; }
nav .container { display: flex; align-items: center; justify-content: space-between; }
.logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.logo .logo-diamond {
  color: var(--red);
  font-size: 1.7rem;
  margin-right: 5px;
  filter: drop-shadow(0 0 6px rgba(230,57,70,0.4));
}
.logo .logo-hot {
  color: var(--white);
}
.logo .logo-deck {
  color: var(--red);
}
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: var(--muted);
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  font-size: 0.8rem !important;
  font-weight: 700 !important;
  color: var(--red) !important;
  border: 1px solid var(--red);
  padding: 8px 22px;
  border-radius: 40px;
  transition: all 0.3s !important;
}
.nav-cta:hover { background: var(--red); color: #fff !important; }
.nav-lang-group { display: inline-flex; gap: 6px; }
.nav-lang {
  font-size: 0.75rem !important;
  font-weight: 700 !important;
  letter-spacing: 1px;
  border: 1px solid var(--grey);
  border-radius: 4px;
  padding: 4px 8px;
}
.nav-lang:hover { border-color: var(--red); color: var(--white) !important; }

/* ── HERO ─────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 100px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(230,57,70,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(230,57,70,0.05) 0%, transparent 50%);
}
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 900;
  margin-bottom: 28px;
  letter-spacing: -2px;
}
.hero h1 .line2 { display: block; }
.hero p.sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 620px;
  margin-bottom: 44px;
  line-height: 1.8;
}
.hero-cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.hero-micro { margin-top: 16px; }
.hero-differentiator {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  padding: 12px 20px;
  background: rgba(230,57,70,0.06);
  border: 1px solid rgba(230,57,70,0.2);
  border-left: 3px solid var(--red);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.5;
}
.hero-differentiator strong { color: var(--white); }

.hero-visual {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  opacity: 0.12;
  z-index: 0;
}
.hero-visual .big-suit {
  font-size: 400px;
  color: var(--red);
  line-height: 1;
  animation: pulseSuit 4s ease-in-out infinite;
}
@keyframes pulseSuit {
  0%, 100% { opacity: 0.12; transform: scale(1); }
  50%      { opacity: 0.18; transform: scale(1.03); }
}

/* ── WHAT IT DOES ─────────────────────────────────── */
.what { background: var(--black2); }
.what-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.what h2 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  margin-bottom: 28px;
  letter-spacing: -1px;
}
.what p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.9;
}
.what p strong { color: var(--white); }
.what-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.card-fan {
  position: relative;
  width: 280px;
  height: 360px;
}
.playing-card {
  position: absolute;
  width: 180px;
  height: 260px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 900;
  font-family: 'Playfair Display', serif;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  transition: transform 0.5s ease;
}
.playing-card:nth-child(1) {
  background: var(--black3);
  border: 1px solid var(--grey);
  color: var(--white);
  transform: rotate(-12deg) translateX(-30px);
  z-index: 1;
}
.playing-card:nth-child(2) {
  background: linear-gradient(135deg, var(--red-d), var(--red));
  color: #fff;
  transform: rotate(4deg) translateX(30px) translateY(-20px);
  z-index: 2;
}
.playing-card .card-corner {
  position: absolute;
  top: 12px;
  left: 14px;
  font-size: 1.1rem;
  line-height: 1.1;
  text-align: center;
}
.playing-card .card-corner-bottom {
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-size: 1.1rem;
  line-height: 1.1;
  text-align: center;
  transform: rotate(180deg);
}
.card-fan:hover .playing-card:nth-child(1) { transform: rotate(-18deg) translateX(-50px); }
.card-fan:hover .playing-card:nth-child(2) { transform: rotate(10deg) translateX(50px) translateY(-30px); }

/* ── DETERMINISTIC CORE ───────────────────────────── */
.engines { background: var(--black); }
.engines-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 80px;
}
.engines-header h2 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.engines-header p {
  color: var(--muted);
  font-size: 1.1rem;
}
.engine-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 60px;
}
.engine-card {
  background: var(--black2);
  border: 1px solid var(--grey);
  border-radius: 20px;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s, transform 0.3s;
}
.engine-card:hover {
  border-color: var(--red);
  transform: translateY(-4px);
}
.engine-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), transparent);
}
.engine-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.engine-icon img,
.fail-icon img {
  width: 56px;
  height: 56px;
  display: block;
}
.engine-card h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.engine-card .engine-subtitle {
  color: var(--red);
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.engine-card p { color: var(--muted); margin-bottom: 24px; line-height: 1.8; }
.engine-card ul { list-style: none; }
.engine-card li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 16px;
  color: var(--muted);
  line-height: 1.7;
}
.engine-card li::before {
  content: '♦';
  position: absolute;
  left: 0;
  color: var(--red);
  font-size: 0.75rem;
  top: 4px;
}
.engine-card li strong { color: var(--white); }

.god-view {
  text-align: center;
  background: linear-gradient(135deg, rgba(230,57,70,0.06), rgba(230,57,70,0.02));
  border: 1px solid rgba(230,57,70,0.15);
  border-radius: 20px;
  padding: 48px 40px;
}
.god-view h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}
.god-view p {
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ── WHY AI CAN'T HELP ────────────────────────────── */
.ai-fail { background: var(--black2); }
.ai-fail-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 80px;
}
.ai-fail-header h2 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.ai-fail-content {
  max-width: 900px;
  margin: 0 auto;
}
.ai-fail-block {
  background: var(--black);
  border: 1px solid var(--grey);
  border-radius: 20px;
  padding: 48px 40px;
  margin-bottom: 32px;
  transition: border-color 0.4s;
}
.ai-fail-block:hover { border-color: var(--red); }
.ai-fail-block h3 {
  font-size: 1.5rem;
  margin-bottom: 24px;
  color: var(--white);
}
.ai-fail-block p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 20px;
}
.ai-fail-block ul { list-style: none; }
.ai-fail-block li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.ai-fail-block li::before {
  content: '✕';
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 700;
  font-size: 0.8rem;
  top: 4px;
}
.ai-fail-block li strong { color: var(--white); }
.ai-fail-block.positive li::before {
  content: '✓';
  color: var(--red);
}
.ai-fail-conclusion {
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, rgba(230,57,70,0.06), rgba(230,57,70,0.02));
  border: 1px solid rgba(230,57,70,0.15);
  border-radius: 20px;
}
.ai-fail-conclusion p {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}
.ai-fail-conclusion p:last-child {
  color: var(--white);
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0;
}

/* ── WHY STRATEGIES FAIL ──────────────────────────── */
.fail { background: var(--black); }
.fail-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 80px;
}
.fail-header h2 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  letter-spacing: -1px;
}
.fail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.fail-card {
  background: var(--black2);
  border: 1px solid var(--grey);
  border-radius: 20px;
  padding: 48px 40px;
  transition: border-color 0.4s;
}
.fail-card:hover { border-color: var(--red); }
.fail-card .fail-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.fail-card h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}
.fail-card .fail-subtitle {
  color: var(--red);
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.fail-card ul { list-style: none; }
.fail-card li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.fail-card li::before {
  content: '✕';
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 700;
  font-size: 0.8rem;
  top: 4px;
}
.fail-card li strong { color: var(--white); }

/* ── COMPARISON TABLE ────────────────────────────── */
.compare { background: var(--black2); }
.compare-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}
.compare-header h2 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.compare-header p {
  color: var(--muted);
  font-size: 1.1rem;
}
.compare-table-wrap {
  max-width: 860px;
  margin: 0 auto;
  overflow-x: auto;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Inter', sans-serif;
}
.compare-table th {
  padding: 20px 24px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-align: center;
  border-bottom: 2px solid var(--grey);
}
.compare-table th:first-child { text-align: left; }
.compare-table th.col-hotdeck {
  color: var(--red);
  background: rgba(230,57,70,0.06);
  border-bottom-color: var(--red);
  border-radius: 12px 12px 0 0;
}
.compare-table td {
  padding: 18px 24px;
  text-align: center;
  border-bottom: 1px solid var(--grey);
  font-size: 0.95rem;
  color: var(--muted);
}
.compare-table td:first-child {
  text-align: left;
  color: var(--white);
  font-weight: 500;
}
.compare-table td.col-hotdeck {
  background: rgba(230,57,70,0.04);
  font-weight: 700;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: rgba(255,255,255,0.02); }
.compare-table tr:hover td.col-hotdeck { background: rgba(230,57,70,0.07); }
.chk { color: var(--red); font-size: 1.1rem; }
.crs { color: var(--grey-l); font-size: 1rem; }

/* ── VISUALIZATION ────────────────────────────────── */
.viz { background: var(--black2); }
.viz-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 80px;
}
.viz-header h2 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin-bottom: 16px;
  letter-spacing: -1px;
}
.viz-header p {
  color: var(--muted);
  font-size: 1.1rem;
}
.viz-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.viz-block {
  background: var(--black);
  border: 1px solid var(--grey);
  border-radius: 20px;
  padding: 48px 40px;
  transition: border-color 0.4s;
}
.viz-block:hover { border-color: var(--red); }
.viz-block h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}
.viz-block .viz-subtitle {
  color: var(--red);
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.viz-block ul { list-style: none; }
.viz-block li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 20px;
  color: var(--muted);
  line-height: 1.8;
}
.viz-block li::before {
  content: '♠';
  position: absolute;
  left: 0;
  color: var(--white);
  font-size: 0.85rem;
  top: 3px;
}
.viz-block li strong { color: var(--white); }

/* ── FINAL CTA ────────────────────────────────────── */
.final-cta {
  background: var(--black);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(230,57,70,0.1) 0%, transparent 60%);
}
.final-cta .container { position: relative; z-index: 1; }
.final-cta h2 {
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  margin-bottom: 24px;
  letter-spacing: -2px;
}
.final-cta > .container > p {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.9;
}
.final-features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  max-width: 1120px;
  margin: 0 auto 56px;
}
.final-feature {
  text-align: center;
  padding: 32px 20px;
}
.final-feature .ff-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.final-feature h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}
.final-feature p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.final-cta .btn { margin-bottom: 16px; }

/* ── FOOTER ───────────────────────────────────────── */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--grey);
  text-align: center;
}
footer p { color: var(--muted); font-size: 0.8rem; }

/* ── Scroll Animations ────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 1100px) {
  .final-features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .what-grid, .engine-cards, .fail-grid, .viz-split {
    grid-template-columns: 1fr;
  }
  .final-features { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .nav-links a:not(.nav-cta), .nav-lang-group { display: none; }
}
@media (max-width: 600px) {
  .section { padding: 80px 0; }
  .hero h1 { font-size: 2.5rem; }
  .engine-card, .fail-card, .viz-block, .ai-fail-block { padding: 32px 24px; }
}