:root{
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-2: #f1f4fb;

  --text: #0f172a;
  --muted: #475569;
  --border: rgba(15, 23, 42, 0.10);

  --primary: #0a84ff;
  --primary-2: #0f5fd6;

  --shadow: 0 18px 48px rgba(2, 6, 23, 0.10);
  --shadow-soft: 0 10px 26px rgba(2, 6, 23, 0.08);

  --radius: 18px;
  --radius-sm: 14px;

  --max: 1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background:
    radial-gradient(1000px 600px at 20% 10%, rgba(10,132,255,0.12), transparent 55%),
    radial-gradient(900px 520px at 75% 0%, rgba(15,95,214,0.10), transparent 45%),
    var(--bg);
  color: var(--text);
}

img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; text-decoration-thickness:2px; text-underline-offset:3px; }

.container{
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
}

.no-scroll{ overflow:hidden; }

.section{
  padding: 0 0 56px;
}
.section.alt{
  background: rgba(255,255,255,0.55);
  border-top: 1px solid rgba(15,23,42,0.06);
  border-bottom: 1px solid rgba(15,23,42,0.06);
}

.section-head{
  display:grid;
  gap:10px;
  margin-bottom: 18px;
}
.section-head h2{
  margin:0;
  font-size: 30px;
  letter-spacing: -0.02em;
}
.section-head p{
  margin:0;
  color: var(--muted);
  line-height:1.65;
  max-width: 72ch;
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 750;
  font-size: 14px;
  border: 1px solid transparent;
  text-decoration:none !important;
  cursor:pointer;
  user-select:none;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease, border-color .12s ease;
}
.btn:active{ transform: translateY(1px); }
.btn-lg{ padding: 12px 16px; font-size: 15px; }

.btn-primary{
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color:#fff;
  box-shadow: 0 16px 36px rgba(10,132,255,0.22);
}
.btn-primary:hover{
  box-shadow: 0 18px 44px rgba(10,132,255,0.26);
  transform: translateY(-1px);
  text-decoration:none;
}

.btn-ghost{
  background: rgba(255,255,255,0.70);
  border-color: rgba(15,23,42,0.10);
  color: var(--text);
  box-shadow: 0 10px 24px rgba(2,6,23,0.06);
}
.btn-ghost:hover{
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(2,6,23,0.08);
  text-decoration:none;
}

.fine{ color: var(--muted); font-size: 12px; line-height:1.5; margin:0; }

/* Common cards/grids */
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card{
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(15,23,42,0.08);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-soft);
}
.card.subtle{ background: rgba(241,244,251,0.68); }
.card h3{ margin:0 0 8px; font-size: 18px; }
.card p{ margin:0; color: var(--muted); line-height:1.6; }

.checklist{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}


/* Compact spacing update (2026-03-10) */
@media (max-width: 980px){
  .section{ padding: 0 0 30px; }
  .section-head{ margin-bottom: 16px; }
  .card{ padding: 16px; }
}
@media (max-width: 520px){
  .section{ padding: 0 0 24px; }
  .section-head{ gap:8px; margin-bottom: 14px; }
  .card{ padding: 14px; }
}


/* Premium button refinement (2026-03-12) */
.btn{
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.btn::before{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(120deg,
      rgba(255,255,255,0.30) 0%,
      rgba(255,255,255,0.10) 18%,
      rgba(255,255,255,0.00) 42%,
      rgba(255,255,255,0.14) 70%,
      rgba(255,255,255,0.00) 100%);
  opacity: 0;
  transform: translateX(-16%);
  transition: opacity .20s ease, transform .34s ease;
  pointer-events: none;
  z-index: 0;
}
.btn > *{ position: relative; z-index: 1; }

.btn-primary{
  background: linear-gradient(135deg, #2f97f7 0%, #49a7f8 46%, #69b7fa 100%);
  box-shadow:
    0 16px 34px rgba(47,151,247,0.20),
    inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn-primary:hover{
  box-shadow:
    0 20px 42px rgba(47,151,247,0.24),
    inset 0 1px 0 rgba(255,255,255,0.22);
  filter: saturate(1.02);
}
.btn-primary:hover::before{ opacity: 1; transform: translateX(8%); }

.btn-ghost{
  background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(241,244,251,0.84));
  border-color: rgba(15,23,42,0.11);
  box-shadow:
    0 12px 28px rgba(2,6,23,0.07),
    inset 0 1px 0 rgba(255,255,255,0.78);
}
.btn-ghost:hover{
  box-shadow:
    0 16px 34px rgba(2,6,23,0.10),
    inset 0 1px 0 rgba(255,255,255,0.88);
}
.btn-ghost:hover::before{ opacity: .72; transform: translateX(8%); }