/* Kelsenger — marketing site and shared UI. Light, airy, blue; glass orbs are pure CSS (no images). */
:root {
  --bg: #f7f9ff;
  --surface: #ffffff;
  --ink: #0b1324;
  --text: #475569;
  --muted: #5b6a82;
  --line: #e4eaf5;
  --line-soft: #eef2f9;
  --blue: #2563eb;
  --blue-600: #1d4ed8;
  --blue-50: #eef4ff;
  --blue-100: #dbe6ff;
  --green: #15803d; --green-50: #e7f7ee;
  --violet: #7c3aed; --violet-50: #f1ebff;
  --orange: #c2410c; --orange-50: #fff1e7;
  --pink: #be185d; --pink-50: #ffe9f1;
  --cyan: #0e7490; --cyan-50: #e2f6fb;
  --warn-bg: #fff8e8; --warn-line: #f3e1b3; --warn-ink: #6b4e12;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(15, 30, 70, 0.04), 0 12px 32px rgba(37, 99, 235, 0.07);
  --shadow-lg: 0 2px 6px rgba(15, 30, 70, 0.05), 0 30px 70px rgba(37, 99, 235, 0.14);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI Variable Display", "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; }
a { color: var(--blue); }
a:hover { color: var(--blue-600); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 8px; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); line-height: 1.1; letter-spacing: -0.025em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.accent { color: var(--blue); }

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px; text-decoration: none;
}
.skip:focus { top: 12px; color: #fff; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; position: relative; }

/* ---------- Orbs (decorative) ---------- */
.orb {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: 0;
  background: radial-gradient(circle at 32% 28%, #ffffff 0%, #dbe6ff 16%, #7aa2ff 46%, #2f62f0 72%, #1e40af 100%);
  box-shadow: inset -14px -20px 40px rgba(20, 45, 150, 0.35), 0 30px 60px rgba(37, 99, 235, 0.2);
}
.orb-glass {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: 0;
  background: radial-gradient(circle at 34% 30%, rgba(255, 255, 255, 0.98) 0%, rgba(226, 235, 255, 0.75) 30%, rgba(140, 175, 255, 0.45) 64%, rgba(80, 120, 245, 0.42) 100%);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: inset -18px -26px 50px rgba(60, 100, 230, 0.22), 0 40px 80px rgba(37, 99, 235, 0.14);
}
.glow {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: 0; filter: blur(10px);
  background: radial-gradient(circle, rgba(120, 160, 255, 0.32), rgba(120, 160, 255, 0) 65%);
}
@media (prefers-reduced-motion: no-preference) {
  .float { animation: float 9s ease-in-out infinite; }
  .float-slow { animation: float 13s ease-in-out infinite; }
  @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
}

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 249, 255, 0.82);
  backdrop-filter: saturate(1.5) blur(14px);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid rgba(228, 234, 245, 0.8);
}
.header .wrap { display: flex; align-items: center; gap: 28px; height: 70px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 750; font-size: 20px; letter-spacing: -0.03em; }
.logo:hover { color: var(--ink); }
.logo-mark {
  width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(145deg, #4f86ff, #1d4ed8); color: #fff; font-weight: 800; font-size: 16px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.35);
}
.nav { display: none; gap: 30px; margin: 0 auto; }
.nav a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; opacity: 0.85; }
.nav a:hover { opacity: 1; color: var(--blue); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
@media (min-width: 900px) {
  .nav { display: flex; }
  .header-actions { margin-left: 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 48px; padding: 0 24px; border-radius: 12px; border: 1px solid transparent;
  font: inherit; font-size: 16px; font-weight: 650; line-height: 1; text-decoration: none; cursor: pointer;
  transition: background-color 0.15s, box-shadow 0.15s, border-color 0.15s, color 0.15s;
}
.btn-sm { min-height: 42px; padding: 0 18px; font-size: 15px; }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28); }
.btn-primary:hover { background: var(--blue-600); color: #fff; }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn-text { background: transparent; color: var(--blue); padding: 0 8px; }
.btn-text:hover { color: var(--blue-600); }
.btn-white { background: #fff; color: var(--blue); }
.btn-white:hover { background: var(--blue-50); color: var(--blue-600); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; box-shadow: none; }
.play { width: 26px; height: 26px; border-radius: 50%; background: var(--blue-50); display: grid; place-items: center; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 64px 0 40px; overflow: hidden; }
.hero .wrap { display: grid; gap: 56px; align-items: center; z-index: 1; }
@media (min-width: 1000px) {
  .hero { padding: 88px 0 56px; }
  .hero .wrap { grid-template-columns: 0.95fr 1.05fr; gap: 48px; }
}
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.85); border: 1px solid var(--line); box-shadow: var(--shadow);
  font-size: 14px; font-weight: 600; color: var(--ink);
}
.pill-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px var(--blue-100); }
.hero h1 { margin-top: 22px; font-size: clamp(42px, 6.4vw, 72px); font-weight: 800; letter-spacing: -0.04em; line-height: 1.02; }
.hero .lead { margin-top: 22px; font-size: clamp(17px, 1.6vw, 19px); max-width: 520px; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.hero-note { margin-top: 18px; font-size: 14.5px; color: var(--muted); }

/* Dashboard mock */
.mock-stage { position: relative; }
.mock {
  position: relative; z-index: 1; background: rgba(255, 255, 255, 0.92); border: 1px solid var(--line);
  border-radius: 22px; box-shadow: var(--shadow-lg); display: flex; overflow: hidden;
}
.mock-side { width: 58px; flex-shrink: 0; border-right: 1px solid var(--line-soft); padding: 18px 0; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.mock-side span { width: 30px; height: 30px; border-radius: 9px; background: var(--line-soft); }
.mock-side span.on { background: var(--blue); box-shadow: 0 6px 14px rgba(37, 99, 235, 0.3); }
.mock-main { flex-grow: 1; min-width: 0; padding: 20px 22px 22px; }
.mock-top { display: flex; align-items: center; gap: 10px; }
.mock-title { font-weight: 700; color: var(--ink); font-size: 17px; }
.mock-chip { margin-left: auto; font-size: 12px; padding: 4px 10px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); }
.mock-avatar { width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(145deg, #c7d7ff, #8fb0ff); }
.mock-hello { margin-top: 14px; font-weight: 650; color: var(--ink); font-size: 16px; }
.mock-sub { font-size: 12.5px; color: var(--muted); }
.kpis { margin-top: 14px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (min-width: 560px) { .kpis { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.kpi { border: 1px solid var(--line-soft); border-radius: 13px; padding: 10px 12px; background: #fff; }
.kpi-label { font-size: 11.5px; color: var(--muted); }
.kpi-value { font-size: 21px; font-weight: 750; color: var(--ink); letter-spacing: -0.02em; margin-top: 2px; }
.kpi-delta { font-size: 11.5px; font-weight: 650; color: var(--green); }
.mock-row { margin-top: 12px; display: grid; gap: 10px; }
@media (min-width: 560px) { .mock-row { grid-template-columns: 1.55fr 1fr; } }
.mock-card { border: 1px solid var(--line-soft); border-radius: 14px; padding: 12px 14px; background: #fff; }
.mock-card h4 { font-size: 13px; font-weight: 650; }
.donut-wrap { display: flex; align-items: center; gap: 14px; margin-top: 8px; }
.legend { display: grid; gap: 6px; font-size: 12px; color: var(--text); }
.legend span { display: flex; align-items: center; gap: 7px; }
.legend i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.mock-caption { position: relative; z-index: 1; margin-top: 12px; text-align: right; font-size: 12.5px; color: var(--muted); }

.bubble-card {
  position: absolute; z-index: 2; left: -18px; bottom: -34px; width: 276px;
  background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-lg); padding: 12px;
}
.bubble-head { display: flex; align-items: center; gap: 9px; font-size: 12.5px; font-weight: 650; color: var(--ink); }
.wa { width: 24px; height: 24px; border-radius: 50%; background: #1f9d55; display: grid; place-items: center; }
.bubble { margin-top: 8px; padding: 8px 11px; border-radius: 12px; font-size: 13px; line-height: 1.4; color: var(--ink); }
.bubble-in { background: var(--line-soft); border-bottom-left-radius: 4px; margin-right: 26px; }
.bubble-out { background: var(--blue-50); border-bottom-right-radius: 4px; margin-left: 26px; }
.bubble time { display: block; font-size: 10.5px; color: var(--muted); text-align: right; margin-top: 2px; }
@media (max-width: 999px) { .bubble-card { position: relative; left: auto; bottom: auto; margin: -28px auto 0; } }

/* ---------- Facts strip ---------- */
.facts { position: relative; z-index: 1; padding: 44px 0 20px; }
.facts-title { text-align: center; font-size: 14px; color: var(--muted); }
.facts-list { margin-top: 18px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 34px; }
.facts-list li { display: flex; align-items: center; gap: 9px; font-weight: 650; color: var(--ink); font-size: 15.5px; }
.facts-list svg { color: var(--blue); }

/* ---------- Sections ---------- */
.section { position: relative; padding: 96px 0; }
.section-head { display: grid; gap: 18px; align-items: end; }
@media (min-width: 900px) { .section-head { grid-template-columns: 1.1fr 0.9fr; gap: 48px; } }
.section-head.center { text-align: center; grid-template-columns: 1fr; justify-items: center; }
.h2 { font-size: clamp(32px, 4.2vw, 46px); font-weight: 800; letter-spacing: -0.035em; line-height: 1.08; }
.section-lead { font-size: 17.5px; max-width: 520px; }
.center .section-lead { margin: 0 auto; }

/* Feature cards */
.features { margin-top: 48px; display: grid; gap: 20px; position: relative; z-index: 1; }
@media (min-width: 700px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1000px) { .features { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px 30px; box-shadow: var(--shadow); }
.tile { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; }
.tile-blue { background: var(--blue-50); color: var(--blue); }
.tile-green { background: var(--green-50); color: var(--green); }
.tile-violet { background: var(--violet-50); color: var(--violet); }
.tile-orange { background: var(--orange-50); color: var(--orange); }
.tile-pink { background: var(--pink-50); color: var(--pink); }
.tile-cyan { background: var(--cyan-50); color: var(--cyan); }
.feature h3 { margin-top: 20px; font-size: 19px; font-weight: 720; letter-spacing: -0.02em; }
.feature p { margin-top: 9px; font-size: 15.5px; }

/* In action */
.action { margin-top: 44px; position: relative; z-index: 1; background: rgba(255, 255, 255, 0.9); border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow-lg); padding: 22px; display: grid; gap: 20px; }
@media (min-width: 960px) { .action { grid-template-columns: 1fr 1fr; padding: 28px; } }
.chat { background: #efeae2; border-radius: 18px; overflow: hidden; border: 1px solid #e3ddd3; }
.chat-head { display: flex; align-items: center; gap: 11px; padding: 11px 15px; background: #fff; border-bottom: 1px solid #ece7de; }
.chat-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--blue-50); color: var(--blue); display: grid; place-items: center; font-weight: 750; font-size: 14px; }
.chat-name { font-weight: 650; color: var(--ink); font-size: 14.5px; }
.chat-status { font-size: 12px; color: #2f7a4b; }
.chat-body { padding: 14px 12px 16px; display: flex; flex-direction: column; gap: 7px; }
.msg { max-width: 86%; padding: 8px 11px 5px; border-radius: 12px; font-size: 14px; line-height: 1.45; color: #111b21; }
.msg-in { align-self: flex-start; background: #fff; border-top-left-radius: 4px; }
.msg-out { align-self: flex-end; background: #d9fdd3; border-top-right-radius: 4px; }
.msg time { display: block; text-align: right; font-size: 11px; color: #54656f; margin-top: 2px; }
.flow { display: flex; flex-direction: column; gap: 10px; }
.flow-head { display: flex; align-items: center; gap: 10px; }
.flow-head h3 { font-size: 17px; font-weight: 720; }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 650; padding: 4px 10px; border-radius: 999px; }
.badge-green { background: var(--green-50); color: var(--green); }
.badge-green::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.flow-step { display: flex; gap: 13px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 13px 14px; }
.flow-step .tile { width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0; }
.flow-step strong { display: block; color: var(--ink); font-size: 14.5px; font-weight: 650; }
.flow-step span { font-size: 13.5px; }
.flow-line { width: 2px; height: 10px; background: var(--line); margin-left: 31px; border-radius: 2px; }

/* Steps */
.steps { margin-top: 48px; display: grid; gap: 20px; position: relative; z-index: 1; counter-reset: step; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1080px) { .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px 28px; box-shadow: var(--shadow); }
.step::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(145deg, #4f86ff, #1d4ed8); color: #fff; font-weight: 800; font-size: 17px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.3);
}
.step h3 { margin-top: 18px; font-size: 18.5px; font-weight: 720; }
.step p { margin-top: 8px; font-size: 15.5px; }
.step-time { display: inline-block; margin-top: 14px; font-size: 13px; font-weight: 650; color: var(--blue); background: var(--blue-50); padding: 4px 10px; border-radius: 999px; }
.steps-note { position: relative; z-index: 1; margin-top: 26px; text-align: center; font-size: 15.5px; }

/* Honest */
.honest { margin-top: 44px; display: grid; gap: 20px; position: relative; z-index: 1; }
@media (min-width: 900px) { .honest { grid-template-columns: 1fr 1fr; } }
.honest-card { border-radius: var(--radius); padding: 28px; }
.honest-card h3 { font-size: 20px; font-weight: 720; }
.honest-card ul { margin-top: 16px; display: grid; gap: 11px; }
.honest-card li { display: flex; gap: 11px; font-size: 15.5px; }
.honest-card li svg { flex-shrink: 0; margin-top: 4px; }
.honest-no { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.honest-no li svg { color: var(--muted); }
.honest-wa { background: var(--warn-bg); border: 1px solid var(--warn-line); color: var(--warn-ink); }
.honest-wa h3 { color: #4a360c; }
.honest-wa li svg { color: #9a6b0f; }

/* FAQ */
.faq { margin: 44px auto 0; display: grid; gap: 12px; max-width: 860px; position: relative; z-index: 1; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 56px 20px 22px; font-weight: 650; font-size: 16.5px; color: var(--ink); position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 24px; top: 50%; width: 10px; height: 10px;
  border-right: 2px solid var(--blue); border-bottom: 2px solid var(--blue);
  transform: translateY(-70%) rotate(45deg); transition: transform 0.15s;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq details p { padding: 0 22px 22px; font-size: 15.5px; }

/* CTA band */
.cta-band {
  position: relative; overflow: hidden; border-radius: 30px; padding: 64px 32px; text-align: center; color: #fff;
  background: radial-gradient(120% 140% at 10% 0%, #2f6df0 0%, #2563eb 40%, #1e3fae 100%);
  box-shadow: 0 30px 70px rgba(37, 99, 235, 0.3);
}
.cta-band h2 { color: #fff; font-size: clamp(30px, 4vw, 44px); font-weight: 800; letter-spacing: -0.035em; position: relative; z-index: 1; }
.cta-band p { margin: 16px auto 0; max-width: 560px; color: #ffffff; font-size: 17.5px; position: relative; z-index: 1; }
.cta-band .hero-actions { justify-content: center; position: relative; z-index: 1; }
.cta-band .orb-glass { opacity: 0.55; }

/* Footer */
.footer { padding: 64px 0 48px; }
.footer .wrap { display: grid; gap: 32px; }
@media (min-width: 800px) { .footer .wrap { grid-template-columns: 1.3fr 1fr 1fr; } }
.footer h4 { margin: 0 0 14px; font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.footer ul { display: grid; gap: 9px; }
.footer a { color: var(--text); text-decoration: none; font-size: 15px; }
.footer a:hover { color: var(--blue); text-decoration: underline; }
.footer-about { margin-top: 14px; font-size: 15px; max-width: 360px; }
.footer-legal { grid-column: 1 / -1; padding-top: 22px; border-top: 1px solid var(--line); font-size: 13.5px; color: var(--muted); display: grid; gap: 6px; }
.footer-legal a { font-size: 13.5px; }

/* ---------- Legal documents ---------- */
.doc-page { position: relative; overflow: hidden; }
.doc { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; padding: 56px 24px 32px; }
.doc-card { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); padding: 40px 36px; }
@media (max-width: 600px) { .doc-card { padding: 28px 20px; border-radius: 18px; } }
.doc h1 { font-size: clamp(30px, 5vw, 42px); font-weight: 800; }
.doc-date { margin-top: 12px; color: var(--muted); font-size: 15px; }
.doc h2 { margin-top: 36px; font-size: 21px; font-weight: 720; }
.doc h3 { margin-top: 22px; font-size: 17px; font-weight: 700; }
.doc p, .doc li { margin-top: 12px; }
.doc ul { list-style: disc; padding-left: 22px; }
.doc ol { list-style: decimal; padding-left: 22px; }
.doc table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 15px; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.doc-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.doc-nav a { font-size: 14px; padding: 7px 13px; border-radius: 999px; border: 1px solid var(--line); background: #fff; text-decoration: none; color: var(--ink); }
.doc-nav a[aria-current="page"] { background: var(--blue); border-color: var(--blue); color: #fff; }
.table-scroll { overflow-x: auto; }

@media (max-width: 760px) {
  .section { padding: 72px 0; }
  .orb-hide-sm { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}