/* O2 Champions — prototype styles */
:root {
  /* OpenObserve logo colours */
  --o2-indigo: #6b76e3;
  --o2-blue: #45a4f3;
  --o2-green: #5aca7a;
  --o2-coral: #f45b49;

  /* Light theme, matching openobserve.ai */
  --bg: #ffffff;
  --bg-2: #f4f6fd;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --line: rgba(23, 24, 28, 0.08);
  --line-strong: rgba(23, 24, 28, 0.14);
  --text: #17181c;
  --muted: #4a5163;
  --faint: #6d7688;
  --brand: var(--o2-indigo);
  --brand-hover: #5560d6;
  --on-brand: #ffffff;
  --brand-2: #4f5ad0;
  --accent: var(--o2-coral);
  --ok: #06865c;
  --warn: #a35a00;
  --err: #d4123c;
  --gold: #c99400;
  --silver: #8a94a6;
  --bronze: #b8693a;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 50px -24px rgba(23, 24, 28, 0.25);
  --font: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  --display: "Poppins", "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
a { color: var(--brand-2); text-decoration: none; }
a:hover { color: var(--text); }
img { max-width: 100%; }
h1, h2, h3, h4 { font-family: var(--display); line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.accent-text { color: var(--brand-2); }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.section { padding: 72px 0; }
.section-sm { padding: 40px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--brand-2);
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--brand); border-radius: 2px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 24px; height: 68px; }
.logo { display: flex; align-items: center; gap: 12px; color: var(--text); font-family: var(--display); font-weight: 600; font-size: 1rem; }
.logo:hover { color: var(--text); }
.logo img { height: 28px; width: auto; display: block; }
.logo-divider { width: 1px; height: 22px; background: var(--line-strong); }
.logo-tag { color: var(--brand-2); }
/* Four-colour stripe from the O2 logo */
.o2-stripe { display: flex; height: 4px; }
.o2-stripe span { flex: 1; }
.o2-stripe span:nth-child(1) { background: var(--o2-indigo); }
.o2-stripe span:nth-child(2) { background: var(--o2-blue); }
.o2-stripe span:nth-child(3) { background: var(--o2-green); }
.o2-stripe span:nth-child(4) { background: var(--o2-coral); }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  color: var(--muted); padding: 8px 14px; border-radius: 999px; font-weight: 500; font-size: 0.93rem;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-links a.active { color: var(--text); background: var(--surface-2); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.points-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line-strong);
  font-weight: 600; font-size: 0.88rem; color: var(--text);
}
.points-chip .coin { width: 18px; height: 18px; }
.menu-btn { display: none; background: none; border: 1px solid var(--line-strong); color: var(--text); border-radius: 10px; width: 40px; height: 40px; cursor: pointer; font-size: 1.1rem; }

@media (max-width: 900px) {
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column;
    background: var(--bg-2); border-bottom: 1px solid var(--line); padding: 12px 16px; display: none;
  }
  .nav-links.open { display: flex; }
  .menu-btn { display: inline-grid; place-items: center; margin-left: auto; }
  .nav-cta .btn { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  font: inherit; font-weight: 600; font-size: 0.95rem; cursor: pointer;
  transition: transform .15s, box-shadow .2s, background .2s, opacity .2s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--brand); color: var(--on-brand); box-shadow: 0 10px 30px -10px rgba(107, 118, 227, 0.45); }
.btn-primary:hover { color: var(--on-brand); background: var(--brand-hover); transform: translateY(-1px); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }

/* ---------- Cards ---------- */
.card {
  box-shadow: 0 1px 2px rgba(23, 24, 28, 0.04);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.card-hover { transition: transform .25s, border-color .25s, box-shadow .25s; }
.card-hover:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1000px) { .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; } }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600;
  background: var(--surface-2); color: var(--muted); border: 1px solid var(--line);
}
.badge-ok { color: var(--ok); background: #eafaf3; border-color: rgba(6, 134, 92, 0.2); }
.badge-warn { color: var(--warn); background: #fff5e8; border-color: rgba(163, 90, 0, 0.2); }
.badge-err { color: var(--err); background: #ffeff2; border-color: rgba(212, 18, 60, 0.2); }
.badge-brand { color: var(--brand-2); background: #eef0fc; border-color: rgba(107, 118, 227, 0.25); }

/* ---------- Hero ---------- */
.hero { padding: 80px 0 60px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 540px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 36px; }
.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.hero-stats strong { display: block; font-family: var(--display); font-size: 1.8rem; }
.hero-stats span { color: var(--muted); font-size: 0.88rem; }
.hero-visual { position: relative; height: 440px; }
.float-card {
  position: absolute; background: #ffffff; border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); backdrop-filter: blur(10px);
  animation: float 6s ease-in-out infinite;
}
.float-card.c1 { top: 10px; left: 0; width: 260px; }
.float-card.c2 { top: 150px; right: 0; width: 240px; animation-delay: -2s; }
.float-card.c3 { bottom: 10px; left: 40px; width: 280px; animation-delay: -4s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { height: 400px; }
}
@media (max-width: 480px) {
  .float-card.c1, .float-card.c3 { width: 230px; left: 0; }
  .float-card.c2 { width: 210px; }
}

/* ---------- Page header ---------- */
.page-head { padding: 56px 0 24px; }
.page-head p { color: var(--muted); max-width: 620px; font-size: 1.05rem; }

/* ---------- Steps ---------- */
.steps { counter-reset: step; }
.step { position: relative; padding-top: 56px; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  position: absolute; top: 20px; left: 24px; font-family: var(--display); font-weight: 700; font-size: 0.9rem;
  color: var(--brand-2);
}
.step .icon { font-size: 1.8rem; margin-bottom: 10px; }

/* ---------- Contribution type cards ---------- */
.type-card {
  position: relative; cursor: pointer; text-align: left; font: inherit; color: inherit;
  display: flex; flex-direction: column; gap: 8px; min-height: 160px;
}
.type-card .emoji { font-size: 2rem; }
.type-card .pts { margin-top: auto; font-family: var(--display); font-weight: 700; font-size: 1.4rem; }
.type-card .pts small { font-size: 0.8rem; color: var(--muted); font-weight: 500; }
.type-card.selected { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand), 0 20px 50px -20px rgba(107, 118, 227, 0.45); }
.type-card.selected::after {
  content: "✓"; position: absolute; top: 14px; right: 14px; width: 24px; height: 24px; border-radius: 50%;
  background: var(--brand); color: var(--on-brand); display: grid; place-items: center; font-size: 0.8rem; font-weight: 700;
}

/* ---------- Forms ---------- */
.form { display: grid; gap: 18px; }
.field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.field label .req { color: var(--accent); }
.field .hint { font-size: 0.8rem; color: var(--faint); margin-top: 6px; }
.input, textarea.input, select.input {
  width: 100%; padding: 13px 16px; border-radius: var(--radius-sm);
  background: var(--bg); border: 1px solid var(--line-strong); color: var(--text);
  font: inherit; font-size: 0.95rem; transition: border-color .2s, box-shadow .2s;
}
.input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(107, 118, 227, 0.2); }
.input[disabled] { opacity: 0.6; }
.input.invalid { border-color: var(--err); }
textarea.input { min-height: 96px; resize: vertical; }
.inline-form { display: flex; gap: 10px; }
.inline-form .input { flex: 1; }
@media (max-width: 560px) { .inline-form { flex-direction: column; } }

.alert {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; border-radius: var(--radius-sm); font-size: 0.92rem; border: 1px solid;
}
.alert-err { background: #ffeff2; border-color: rgba(212, 18, 60, 0.25); color: #9b0f2e; }
.alert-ok { background: #eafaf3; border-color: rgba(6, 134, 92, 0.25); color: #05603f; }
.alert-info { background: #eef0fc; border-color: rgba(107, 118, 227, 0.3); color: #343fae; }
.hidden { display: none !important; }

/* Robot check */
.robot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; border-radius: var(--radius-sm); background: var(--bg); border: 1px solid var(--line-strong);
  max-width: 320px; user-select: none;
}
.robot-left { display: flex; align-items: center; gap: 12px; cursor: pointer; font-size: 0.92rem; }
.robot-box {
  width: 26px; height: 26px; border-radius: 6px; border: 2px solid var(--faint); display: grid; place-items: center;
  transition: all .2s; flex-shrink: 0;
}
.robot.loading .robot-box { border-color: var(--brand); border-top-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
.robot.checked .robot-box { border-color: var(--ok); background: var(--ok); }
.robot.checked .robot-box::after { content: "✓"; color: #fff; font-weight: 800; font-size: 0.9rem; }
.robot-brand { font-size: 0.65rem; color: var(--faint); text-align: right; line-height: 1.2; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Leaderboard ---------- */
.tabs { display: inline-flex; padding: 4px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); }
.tab {
  padding: 9px 20px; border-radius: 999px; border: 0; background: none; color: var(--muted);
  font: inherit; font-weight: 600; font-size: 0.9rem; cursor: pointer;
}
.tab.active { background: var(--brand); color: var(--on-brand); }
.podium { display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: 16px; align-items: end; margin: 40px 0 24px; }
.podium-spot { text-align: center; }
.podium-spot .avatar { margin: 0 auto 12px; }
.podium-spot .name { font-family: var(--display); font-weight: 700; font-size: 1.1rem; }
.podium-block {
  margin-top: 14px; border-radius: var(--radius) var(--radius) 0 0; padding: 18px 10px;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start; gap: 4px;
  border: 1px solid var(--line-strong); border-bottom: 0;
}
.podium-block .rank { font-family: var(--display); font-weight: 800; font-size: 2.4rem; line-height: 1; }
.podium-block .pts { font-weight: 700; }
.p1 .podium-block { height: 200px; background: #fff6dc; }
.p2 .podium-block { height: 150px; background: var(--surface-2); }
.p3 .podium-block { height: 120px; background: #fbeee5; }
.p1 .rank { color: var(--gold); } .p2 .rank { color: var(--silver); } .p3 .rank { color: var(--bronze); }
.crown { font-size: 1.6rem; display: block; margin-bottom: 4px; animation: float 3s ease-in-out infinite; }
@media (max-width: 560px) {
  .podium { gap: 8px; }
  .podium-spot .name { font-size: 0.9rem; }
  .podium-block .rank { font-size: 1.8rem; }
  .podium-spot .avatar.lg { width: 56px; height: 56px; font-size: 1.1rem; }
}

.avatar {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; font-family: var(--display); color: #fff; flex-shrink: 0;
}
.avatar.lg { width: 76px; height: 76px; font-size: 1.5rem; border: 3px solid var(--bg); box-shadow: 0 0 0 2px var(--line-strong); }
.p1 .avatar.lg { box-shadow: 0 0 0 3px var(--gold), 0 0 30px rgba(201, 148, 0, 0.3); }

.rank-list { display: grid; gap: 10px; }
.rank-row {
  display: grid; grid-template-columns: 48px 44px 1fr auto; gap: 14px; align-items: center;
  padding: 14px 18px; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--line);
  transition: border-color .2s, transform .2s;
}
.rank-row:hover { border-color: var(--line-strong); transform: translateX(4px); }
.rank-row .r { font-family: var(--display); font-weight: 700; color: var(--muted); font-size: 1.1rem; }
.rank-row .who strong { display: block; }
.rank-row .score { font-family: var(--display); font-weight: 700; font-size: 1.1rem; text-align: right; }
.rank-row .score small { display: block; font-size: 0.72rem; color: var(--faint); font-weight: 500; }

/* ---------- Shop ---------- */
.shop-toolbar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface);
  color: var(--muted); font: inherit; font-size: 0.86rem; font-weight: 500; cursor: pointer;
}
.chip.active, .chip:hover { color: var(--text); border-color: var(--brand); }
.gift { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.gift-img {
  aspect-ratio: 4 / 3; display: grid; place-items: center; font-size: 4.2rem; position: relative;
  border-bottom: 1px solid var(--line);
}
.gift-img .badge { position: absolute; top: 12px; left: 12px; }
.gift-img span.e { transition: transform .35s; filter: drop-shadow(0 10px 14px rgba(23, 24, 28, 0.18)); }
.gift:hover .gift-img span.e { transform: scale(1.12) rotate(-4deg); }
.gift-body { padding: 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.gift-body h3 { margin: 0; font-size: 1.05rem; }
.gift-price { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 12px; }
.gift-price .pts { display: flex; align-items: center; gap: 6px; font-family: var(--display); font-weight: 700; font-size: 1.2rem; }
.gift-price .usd { color: var(--muted); font-size: 0.85rem; }

/* Modal */
.modal-back {
  position: fixed; inset: 0; background: rgba(23, 24, 28, 0.45); backdrop-filter: blur(6px);
  display: grid; place-items: center; z-index: 100; padding: 16px; opacity: 0; pointer-events: none; transition: opacity .2s;
}
.modal-back.open { opacity: 1; pointer-events: auto; }
.modal {
  width: 100%; max-width: 480px; max-height: calc(100vh - 32px); overflow: auto;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 22px; box-shadow: var(--shadow);
  transform: translateY(16px) scale(0.98); transition: transform .25s;
}
.modal-back.open .modal { transform: none; }
.modal-head { display: flex; gap: 16px; align-items: center; padding: 20px 22px; border-bottom: 1px solid var(--line); }
.modal-head .thumb { width: 64px; height: 64px; border-radius: 14px; display: grid; place-items: center; font-size: 2rem; flex-shrink: 0; }
.modal-body { padding: 22px; }
.modal-close { margin-left: auto; background: var(--surface); border: 1px solid var(--line); color: var(--muted); width: 34px; height: 34px; border-radius: 50%; cursor: pointer; font-size: 1rem; }

/* ---------- Points dashboard ---------- */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat .label { color: var(--muted); font-size: 0.85rem; display: flex; align-items: center; gap: 6px; }
.stat .value { font-family: var(--display); font-weight: 700; font-size: 2rem; }
.stat.big .value { font-size: 3rem; }
.progress { height: 10px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--brand); border-radius: 999px; transition: width 1s cubic-bezier(.2, .8, .2, 1); }
.levels { display: flex; justify-content: space-between; gap: 6px; margin-top: 10px; font-size: 0.75rem; color: var(--faint); }
.levels .on { color: var(--brand-2); font-weight: 600; }

.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th { text-align: left; color: var(--faint); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table .num { text-align: right; font-family: var(--display); font-weight: 600; white-space: nowrap; }
.pos { color: var(--ok); } .neg { color: var(--err); }
.table-wrap { overflow-x: auto; }
.list-item { display: flex; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.list-item:last-child { border-bottom: 0; }
.list-item .grow { flex: 1; min-width: 0; }
.list-item .grow div { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { text-align: center; padding: 30px 10px; color: var(--faint); }

/* Skeleton */
.skeleton { background: var(--surface-2); animation: pulse 1.2s ease-in-out infinite; border-radius: var(--radius-sm); }
@keyframes pulse { 50% { opacity: 0.5; } }

/* Success */
.success { text-align: center; padding: 40px 20px; }
.success .big-emoji { font-size: 4rem; display: block; margin-bottom: 12px; animation: pop .5s cubic-bezier(.2, 1.6, .4, 1); }
@keyframes pop { from { transform: scale(0); } to { transform: scale(1); } }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translate(-50%, 30px); opacity: 0;
  background: var(--text); color: #fff; border: 0; padding: 12px 20px; border-radius: 999px;
  font-size: 0.9rem; z-index: 200; transition: all .3s; box-shadow: var(--shadow); max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Confetti */
.confetti { position: fixed; top: -10px; width: 10px; height: 14px; z-index: 300; pointer-events: none; animation: fall linear forwards; }
@keyframes fall { to { transform: translateY(105vh) rotate(720deg); } }

/* CTA band */
.cta-band {
  position: relative; overflow: hidden; border-radius: 28px; padding: 56px 40px; text-align: center;
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
}
.cta-band h2 { max-width: 640px; margin-left: auto; margin-right: auto; }
@media (max-width: 560px) { .cta-band { padding: 40px 20px; } }

/* Marquee */
.marquee { overflow: hidden; border-block: 1px solid var(--line); padding: 16px 0; background: var(--bg-2); }
.marquee-track { display: flex; gap: 40px; width: max-content; animation: scroll 40s linear infinite; }
.marquee-item { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 0.92rem; white-space: nowrap; }
.marquee-item strong { color: var(--text); }
@keyframes scroll { to { transform: translateX(-50%); } }

/* FAQ */
details.faq { border-bottom: 1px solid var(--line); padding: 18px 0; }
details.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
details.faq summary::after { content: "+"; color: var(--brand-2); font-size: 1.3rem; line-height: 1; transition: transform .2s; }
details.faq[open] summary::after { transform: rotate(45deg); }
details.faq p { color: var(--muted); margin: 12px 0 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 60px; background: var(--bg-2); }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a, .footer-links button { color: var(--muted); font-size: 0.9rem; background: none; border: 0; font: inherit; cursor: pointer; padding: 0; }
.footer-links a:hover, .footer-links button:hover { color: var(--text); }
.proto-banner {
  background: var(--brand); color: var(--on-brand); text-align: center; font-size: 0.8rem; padding: 6px 16px; font-weight: 500;
}

.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 40px; }
.two-col { display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; align-items: start; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.sticky { position: sticky; top: 92px; }
@media (max-width: 900px) { .sticky { position: static; } }
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s, transform .6s; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}