/* Navbar */
.navbar{
  position: sticky; top:0; z-index: 50;
  background: rgba(10,10,12,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.navbar .container{
  height: 68px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand{ display:flex; align-items:center; gap:8px; font-family: var(--font-display); font-weight:700; font-size:1.15rem; }
.brand .mark{ color: var(--red-glow); }
.nav-links{ display:flex; gap: 32px; }
.nav-links a{ color: var(--text-dim); font-size:.92rem; font-weight:500; transition: color .15s; }
.nav-links a:hover, .nav-links a.active{ color: var(--text); }
.nav-actions{ display:flex; align-items:center; gap: 12px; }
.nav-actions .btn{ padding: 9px 18px; font-size: .88rem; }

/* Hero */
.hero{ padding: 88px 0 56px; position: relative; overflow: hidden; }
.hero::before{
  content:''; position:absolute; inset:0;
  background: radial-gradient(600px 300px at 15% 20%, rgba(225,29,46,.14), transparent 70%);
  pointer-events:none;
}
.hero-grid{ display:grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items:center; position:relative; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:.78rem; font-weight:600; color: var(--red-glow);
  text-transform: uppercase; letter-spacing:.08em;
  margin-bottom: 18px;
}
.hero h1{ font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.08; font-weight:700; }
.hero h1 .accent{ color: var(--red-glow); }
.hero p{ color: var(--text-dim); font-size: 1.02rem; max-width: 460px; margin: 18px 0 28px; }
.hero-cta{ display:flex; gap: 14px; }

/* floating K mark */
.hero-mark-wrap{
  position:relative; width:100%; max-width:380px; margin:0 auto;
  aspect-ratio: 1/1;
  display:flex; align-items:center; justify-content:center;
}
.hero-mark{
  position:relative; z-index:1;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(9rem, 18vw, 13rem);
  line-height: 1;
  filter: drop-shadow(0 18px 40px rgba(225,29,46,.35));
  user-select: none;
}
.hero-mark-cursor{
  position:absolute; z-index:1;
  right: 26%; top: 20%;
  width: 6px; height: clamp(3.2rem, 6vw, 4.6rem);
  background: var(--red-glow);
  box-shadow: 0 0 12px 2px rgba(255,45,58,.7);
  animation: mark-blink 1.1s step-end infinite;
}
@keyframes mark-blink{ 50%{ opacity:0; } }
.hero-mark-glow{
  position:absolute; left:50%; top:50%; translate: -50% -50%;
  width:70%; height:70%; border-radius:50%;
  background: radial-gradient(closest-side, rgba(225,29,46,.35), transparent 72%);
  filter: blur(8px);
}
@media (prefers-reduced-motion: reduce){
  .hero-mark-cursor{ animation: none; }
}

/* Stat bar */
.stat-bar{
  display:grid; grid-template-columns: repeat(4,1fr);
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); margin-top: 40px; overflow:hidden;
}
.stat{ padding: 20px 22px; border-right: 1px solid var(--border); }
.stat:last-child{ border-right:none; }
.stat .label{ font-size:.76rem; color: var(--text-dim); margin-bottom:6px; }
.stat .value{ font-family: var(--font-display); font-weight:700; font-size:1.25rem; }
.stat .value.online{ color:#22c55e; }

/* Section heading */
.section{ padding: 64px 0; }
.section-head{ margin-bottom: 32px; }
.section-head h2{ font-size: clamp(1.4rem,2.6vw,1.9rem); font-weight:700; }
.section-head h2 .accent{ color: var(--red-glow); }

/* Feature / category / testimonial cards share a base */
.grid{ display:grid; gap: 20px; }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }

.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover{ border-color: rgba(225,29,46,.4); transform: translateY(-2px); }

.icon-tile{
  width: 44px; height:44px; border-radius: 10px;
  display:flex; align-items:center; justify-content:center;
  background: var(--red-dim); color: var(--red-glow);
  font-size: 1.2rem; margin-bottom: 16px;
}
.card h3{ font-size: 1rem; font-weight:600; margin-bottom:6px; }
.card p{ font-size: .87rem; color: var(--text-dim); }

.cat-card{
  text-align: left;
  position: relative;
  padding: 22px;
  overflow: hidden;
}
.cat-card::before{
  content:'';
  position:absolute; top:0; left:0; right:0; height: 3px;
  background: linear-gradient(90deg, var(--cat-color, var(--red-glow)), transparent);
  opacity: .8;
}
.cat-card .icon-tile{
  margin: 0 0 18px;
  width: 52px; height:52px; font-size:1.5rem; border-radius: 14px;
  background: linear-gradient(155deg, color-mix(in srgb, var(--cat-color, var(--red)) 30%, var(--surface-2)), var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--cat-color, var(--red)) 35%, var(--border));
}
.cat-card h3{ font-size: 1.02rem; margin-bottom: 4px; }
.cat-card .cat-desc{ font-size: .8rem; color: var(--text-dim); margin-bottom: 16px; }
.cat-card .cat-footer{
  display:flex; align-items:center; justify-content: space-between;
}
.cat-card .count{
  font-size: .72rem; font-weight: 600; color: var(--text-dim);
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 999px;
}
.cat-card .arrow{
  color: var(--cat-color, var(--red-glow));
  font-size: 1.1rem; transform: translateX(0); transition: transform .2s ease;
}
.cat-card:hover .arrow{ transform: translateX(4px); }
.cat-card:hover{ border-color: color-mix(in srgb, var(--cat-color, var(--red)) 45%, var(--border)); }

.testi-card .stars{ color:#f5b301; font-size:.8rem; margin-bottom:10px; }
.testi-user{ display:flex; align-items:center; gap:10px; margin-top:16px; }
.avatar{ width:36px; height:36px; border-radius:50%; background: var(--surface-2); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:.8rem; color: var(--red-glow); }

footer{ border-top: 1px solid var(--border); padding: 32px 0; text-align:center; color: var(--text-dim); font-size:.85rem; }

@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-mark-wrap{ max-width: 280px; }
  .stat-bar{ grid-template-columns: repeat(2,1fr); }
  .stat:nth-child(2){ border-right:none; }
  .grid-4{ grid-template-columns: repeat(2,1fr); }
  .grid-3{ grid-template-columns: 1fr; }
  .nav-links{ display:none; }
}