/* ============================================================
   keld. — landing site
   ============================================================ */

:root {
  --navy:        #0C2430;   /* deep background */
  --surface:     #123243;   /* raised surface */
  --surface-2:   #0F2B39;   /* alt section background */
  --teal:        #39C2CE;   /* accent */
  --teal-bright: #5FD6E0;   /* brighter accent */
  --blue:        #2E7D9A;   /* mid blue */
  --text:        #EAF2F4;   /* warm off-white */
  --cream:       #F2ECE2;   /* cream */
  --danger:      #E4513C;   /* danger red */
  --muted:       #9DB4C0;   /* secondary text (blue-grey) */
  --line:        rgba(157, 180, 192, 0.16);
  --line-strong: rgba(157, 180, 192, 0.28);

  --radius:   16px;
  --radius-lg: 22px;
  --maxw: 1140px;
  --gutter: clamp(16px, 5vw, 48px);

  --shadow: 0 18px 50px -24px rgba(0, 0, 0, 0.75);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { line-height: 1.1; letter-spacing: -0.025em; margin: 0; font-weight: 700; }
p { margin: 0; }
a { color: var(--teal-bright); text-decoration: none; }

img, svg { display: block; max-width: 100%; }

/* ---------- Focus & skip link ---------- */
:focus-visible {
  outline: 3px solid var(--teal-bright);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 16px; top: -60px;
  background: var(--teal);
  color: #04141c;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  z-index: 200;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 16px; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(64px, 9vw, 120px); }
.section--alt { background: var(--surface-2); }
.section--network {
  background:
    radial-gradient(900px 420px at 80% 0%, rgba(57, 194, 206, 0.10), transparent 60%),
    var(--navy);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--teal);
  margin-bottom: 14px;
}

h2 { font-size: clamp(1.8rem, 4.2vw, 2.9rem); }
h3 { font-size: 1.22rem; }

.lede {
  color: var(--muted);
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  max-width: 62ch;
  margin-top: 18px;
}

/* ---------- Wordmark ---------- */
.wordmark {
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
}
.wordmark .dot { color: var(--teal-bright); }
.wordmark--xl { font-size: clamp(2.6rem, 7vw, 3.8rem); }
.wordmark--lg { font-size: 2rem; }

.tagline {
  display: block;
  color: var(--teal);
  font-weight: 500;
  letter-spacing: 0.01em;
  font-size: 1rem;
  margin-top: 6px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 1rem;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
  white-space: nowrap;
}
.btn--sm { padding: 9px 18px; font-size: 0.94rem; }

.btn--primary {
  background: var(--teal);
  color: #04141c;
  box-shadow: 0 10px 28px -12px rgba(57, 194, 206, 0.8);
}
.btn--primary:hover { background: var(--teal-bright); transform: translateY(-2px); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--teal); background: rgba(57, 194, 206, 0.08); transform: translateY(-2px); }
.btn--ghost .play { color: var(--teal); font-size: 0.78em; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 36, 48, 0.72);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.nav.is-scrolled {
  background: rgba(12, 36, 48, 0.9);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 12px var(--gutter);
  display: flex;
  align-items: center;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.brand .wordmark { font-size: 1.5rem; }
.mark-sm { width: 30px; height: 30px; flex: none; }

.nav__links {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.nav__links a {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.97rem;
  padding: 8px 14px;
  border-radius: 10px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav__links a:hover { color: var(--text); background: rgba(157, 180, 192, 0.08); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 8px;
}

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: 12px;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav__toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; overflow: hidden; }
.hero__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 520px at 68% 34%, rgba(57, 194, 206, 0.18), transparent 60%),
    radial-gradient(620px 460px at 10% 10%, rgba(46, 125, 154, 0.16), transparent 62%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(40px, 7vw, 92px) var(--gutter) clamp(56px, 8vw, 104px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
.hero__brand { margin-bottom: 26px; }
.hero__copy h1 {
  font-size: clamp(2.3rem, 6vw, 4rem);
  margin-bottom: 20px;
  background: linear-gradient(180deg, var(--cream), var(--text));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  color: var(--muted);
  font-size: clamp(1.04rem, 1.7vw, 1.26rem);
  max-width: 54ch;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}
.hero__note {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}
.hero__art { display: flex; justify-content: center; }
.mark-lg { width: 100%; max-width: 460px; height: auto; filter: drop-shadow(0 20px 50px rgba(0,0,0,0.4)); }

/* glint + motion */
.glint { transform-box: fill-box; transform-origin: center; animation: pulse 3.4s var(--ease) infinite; }
.spark { transform-box: fill-box; transform-origin: center; animation: spark 3.4s var(--ease) infinite; }
.ring  { transform-box: fill-box; transform-origin: center; animation: breathe 6s var(--ease) infinite; }

@keyframes pulse { 0%,100% { opacity: 0.85; transform: scale(1); } 50% { opacity: 1; transform: scale(1.08); } }
@keyframes spark { 0%,100% { opacity: 0.75; transform: scale(1) rotate(0deg); } 50% { opacity: 1; transform: scale(1.18) rotate(45deg); } }
@keyframes breathe { 0%,100% { opacity: 0.6; transform: scale(1); } 50% { opacity: 1; transform: scale(1.03); } }

/* travelling request dots */
.travel { opacity: 0; }
.travel--block { animation: block 4.2s var(--ease) infinite; }
.travel--pass  { animation: pass 4.2s var(--ease) infinite; }
.travel.t2 { animation-delay: 2.1s; }

@keyframes block {
  0%   { transform: translate(14px, 210px);  opacity: 0; }
  12%  { opacity: 1; }
  40%  { transform: translate(158px, 210px); opacity: 1; }
  52%  { transform: translate(150px, 198px); opacity: 1; }
  100% { transform: translate(70px, 112px);  opacity: 0; }
}
@keyframes pass {
  0%   { transform: translate(14px, 210px);  opacity: 0; }
  12%  { opacity: 1; }
  44%  { transform: translate(176px, 210px); opacity: 1; }
  100% { transform: translate(470px, 210px); opacity: 0; }
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(16px, 3vw, 32px);
  margin-top: 48px;
}
.flow__lane {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.flow__lane--block { border-color: rgba(228, 81, 60, 0.4); }
.flow__lane--pass  { border-color: rgba(57, 194, 206, 0.4); }
.flow__badge {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  font-weight: 700;
}
.flow__badge--block { background: rgba(228, 81, 60, 0.16); color: var(--danger); }
.flow__badge--pass  { background: rgba(57, 194, 206, 0.16); color: var(--teal-bright); }
.flow__text { display: flex; flex-direction: column; gap: 4px; }
.flow__text strong { font-size: 1.08rem; }
.flow__text span { color: var(--muted); font-size: 0.95rem; line-height: 1.45; }
.flow__collision { width: 180px; height: auto; }
.flow__caption {
  margin-top: 36px;
  text-align: center;
  color: var(--text);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 500;
  max-width: 46ch;
  margin-inline: auto;
}

/* ============================================================
   CARDS (four questions)
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 44px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.card__num {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--teal);
  margin-bottom: 14px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.97rem; }

/* ============================================================
   THREE HONEST ANSWERS
   ============================================================ */
.answers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 44px;
}
.answer {
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  border: 1px solid var(--line);
  background: var(--surface);
  position: relative;
  overflow: hidden;
}
.answer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
}
.answer__glyph {
  display: grid;
  place-items: center;
  width: 54px; height: 54px;
  border-radius: 16px;
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.answer h3 { margin-bottom: 8px; }
.answer p { color: var(--muted); font-size: 0.98rem; }

.answer--ok { border-color: rgba(57, 194, 206, 0.45); }
.answer--ok::before { background: var(--teal); }
.answer--ok .answer__glyph { background: rgba(57, 194, 206, 0.16); color: var(--teal-bright); }

.answer--block { border-color: rgba(228, 81, 60, 0.45); }
.answer--block::before { background: var(--danger); }
.answer--block .answer__glyph { background: rgba(228, 81, 60, 0.16); color: var(--danger); }

.answer--unknown { border-color: rgba(242, 236, 226, 0.3); }
.answer--unknown::before { background: var(--cream); }
.answer--unknown .answer__glyph { background: rgba(242, 236, 226, 0.12); color: var(--cream); }

/* ============================================================
   NETWORK
   ============================================================ */
.network {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}
.ticks {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: grid;
  gap: 12px;
}
.ticks li {
  position: relative;
  padding-left: 32px;
  color: var(--text);
}
.ticks li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  width: 22px; height: 22px;
  border-radius: 7px;
  background: rgba(57, 194, 206, 0.16);
  color: var(--teal-bright);
  display: grid;
  place-items: center;
  font-size: 0.82rem;
  font-weight: 700;
}
.network__art { display: flex; justify-content: center; }
.network__art svg { width: 100%; max-width: 320px; }

/* ============================================================
   DOWNLOADS
   ============================================================ */
.downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}
.dl {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  border-radius: var(--radius);
  border: 1px dashed var(--line-strong);
  background: var(--surface);
  color: var(--muted);
  cursor: not-allowed;
  min-width: 268px;
}
.dl__icon { width: 26px; height: 26px; flex: none; color: var(--teal); opacity: 0.75; }
.dl__label { font-weight: 600; color: var(--text); margin-right: auto; }
.badge {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(57, 194, 206, 0.14);
  color: var(--teal-bright);
  white-space: nowrap;
}

/* ============================================================
   FOR BUSINESS
   ============================================================ */
.section--business {
  background:
    radial-gradient(700px 360px at 90% 100%, rgba(46, 125, 154, 0.16), transparent 60%),
    var(--surface-2);
}
.biz {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.biz .lede { margin-bottom: 0; }
.biz__cta { flex: none; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #081a24;
  border-top: 1px solid var(--line);
  padding-block: clamp(44px, 6vw, 68px) 28px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.footer__brand { max-width: 46ch; }
.footer__disclaimer {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 16px;
}
.footer__nav {
  display: grid;
  grid-auto-rows: min-content;
  gap: 10px;
  align-content: start;
}
.footer__nav a {
  color: var(--muted);
  font-weight: 500;
}
.footer__nav a:hover { color: var(--text); }
.footer__legal {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
  .hero__inner { grid-template-columns: 1fr; text-align: left; }
  .hero__art { order: -1; }
  .mark-lg { max-width: 360px; }
  .network { grid-template-columns: 1fr; }
  .network__art { order: -1; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    gap: 2px;
    background: rgba(9, 28, 38, 0.98);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 12px var(--gutter) 18px;
    margin: 0;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
  }
  .nav__links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav__links a { padding: 12px 10px; font-size: 1.02rem; }
}

@media (max-width: 620px) {
  .flow { grid-template-columns: 1fr; }
  .flow__collision { order: -1; margin-inline: auto; width: 150px; }
  .answers { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .biz { flex-direction: column; align-items: flex-start; }
  .dl { min-width: 0; width: 100%; }
  .footer__inner { flex-direction: column; gap: 28px; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .travel { display: none; }
  .glint, .spark, .ring { opacity: 1; transform: none; }
}