/* ── Cynfi Design System ───────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700;800;900&family=DM+Sans:wght@300;400;500;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@700;800;900&display=swap');

:root {
  --bg:       #020914;
  --bg2:      #061426;
  --panel:    rgba(11,23,38,.92);
  --panel2:   #0d1d30;
  --text:     #f0f5fb;
  --muted:    #8fa3b8;
  --cyan:     #17d7ff;
  --blue:     #0b78ff;
  --line:     rgba(23,215,255,.14);
  --shadow:   0 24px 64px rgba(0,0,0,.5);
  --radius:   16px;
  --max:      1200px;
  --nav-h:    80px;
  --ff-head:  'Sora', sans-serif;
  --ff-body:  'DM Sans', sans-serif;
  --ease:     cubic-bezier(.22,.68,0,1.2);
}

/* ── Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--ff-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% -10%, rgba(23,215,255,.12), transparent),
    radial-gradient(ellipse 60% 80% at -10% 60%, rgba(11,120,255,.1), transparent);
  pointer-events: none;
  z-index: 0;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Layout ────────────────────────────────────────────────────────────── */
.container { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }

/* ── Navigation ────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(2,9,20,.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 4px 40px rgba(0,0,0,.4); }

.nav {
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--ff-head); font-size: 22px; font-weight: 900;
  letter-spacing: .18em; color: var(--text);
  flex-shrink: 0;
}
.brand img { width: 44px; height: 44px; }
.brand:hover { color: var(--cyan); transition: color .2s; }

.nav-links {
  display: flex; gap: 6px; align-items: center;
  font-family: var(--ff-body); font-size: 13.5px; font-weight: 700;
  letter-spacing: .04em; text-transform: uppercase;
}
.nav-links a {
  padding: 8px 14px; border-radius: 8px;
  color: var(--muted); transition: color .2s, background .2s;
  position: relative;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav-links a.active { color: var(--cyan); }
.nav-links a.nav-cta {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #02101b; padding: 9px 18px; border-radius: 8px;
  margin-left: 8px;
}
.nav-links a.nav-cta:hover { opacity: .9; background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #02101b; }

.menu-btn {
  display: none; background: none; border: 1px solid var(--line);
  color: var(--text); padding: 9px 13px; border-radius: 8px;
  cursor: pointer; font-size: 15px; transition: border-color .2s;
}
.menu-btn:hover { border-color: var(--cyan); }

/* ── Hero ──────────────────────────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
  padding: 100px 0 80px;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 75% 50%, rgba(23,215,255,.18), transparent 40%),
    radial-gradient(circle at 25% 80%, rgba(11,120,255,.12), transparent 40%);
}
.hero::after {
  content: '';
  position: absolute; bottom: 0; left: -5%; right: -5%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: .4;
}

.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
  min-height: 480px;
}

.hero-text { max-width: 580px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--cyan); font-size: 12px; text-transform: uppercase;
  letter-spacing: .2em; font-weight: 700; margin-bottom: 20px;
}
.eyebrow::before {
  content: ''; width: 24px; height: 1px;
  background: var(--cyan); display: block;
}

.hero h1 {
  font-family: var(--ff-head);
  font-size: clamp(36px, 5vw, 68px);
  font-weight: 900; line-height: 1.02;
  margin-bottom: 28px; letter-spacing: -.01em;
}
.accent {
  display: block; color: var(--cyan);
  text-shadow: 0 0 40px rgba(23,215,255,.35);
}

.hero p {
  font-size: clamp(16px, 2vw, 19px);
  color: #c8d8e8; max-width: 500px; line-height: 1.65;
}

.actions {
  display: flex; gap: 14px; flex-wrap: wrap; margin-top: 36px;
}

.hero-art {
  position: relative; display: flex;
  align-items: center; justify-content: center;
}
.hero-art::before {
  content: '';
  position: absolute; inset: -20%;
  background: radial-gradient(circle, rgba(23,215,255,.15), transparent 65%);
  animation: pulse 4s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: .6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}
.hero-art img {
  width: min(380px, 90%);
  filter: drop-shadow(0 0 40px rgba(23,215,255,.5));
  position: relative; z-index: 1;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--cyan); border-radius: 8px;
  padding: 12px 24px; font-weight: 700; font-size: 13.5px;
  text-transform: uppercase; letter-spacing: .05em; color: var(--cyan);
  transition: background .2s, color .2s, transform .15s, box-shadow .2s;
  cursor: pointer;
}
.btn:hover {
  background: rgba(23,215,255,.1);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(23,215,255,.2);
}
.btn.primary {
  background: linear-gradient(135deg, var(--cyan), #1288d4);
  color: #02101b; border: 0;
  box-shadow: 0 4px 20px rgba(23,215,255,.3);
}
.btn.primary:hover {
  background: linear-gradient(135deg, #3de2ff, #1a9ae0);
  box-shadow: 0 8px 32px rgba(23,215,255,.45);
}

/* ── Cards ─────────────────────────────────────────────────────────────── */
.cards {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin-top: -60px;
  position: relative; z-index: 3;
}

.card, .panel {
  background: linear-gradient(160deg, rgba(16,33,54,.95), rgba(6,16,29,.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .25s var(--ease), box-shadow .25s, border-color .25s;
}
.card {
  padding: 32px 28px; min-height: 240px;
  position: relative; overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0; transition: opacity .3s;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 32px 80px rgba(0,0,0,.55), 0 0 0 1px rgba(23,215,255,.2);
  border-color: rgba(23,215,255,.3);
}
.card:hover::before { opacity: 1; }

.icon { font-size: 34px; color: var(--cyan); margin-bottom: 16px; }
.card h3 {
  margin: 0 0 12px; font-family: var(--ff-head);
  font-size: 17px; letter-spacing: .04em; text-transform: uppercase;
}
.rule {
  height: 1px; margin: 14px 0 18px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}
.card p, .panel p { color: #b8cad8; font-size: 14.5px; line-height: 1.65; }
.text-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--cyan); font-weight: 700; font-size: 13.5px; margin-top: 14px;
  transition: gap .2s;
}
.text-link:hover { gap: 10px; }

/* ── Sections ──────────────────────────────────────────────────────────── */
.section { padding: 96px 0; }

.section-title {
  font-family: var(--ff-head);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.1; margin: 8px 0 20px;
}

.app-feature {
  display: grid;
  grid-template-columns: 1fr 220px 1fr;
  gap: 64px;
  align-items: center;
}

.app-icon {
  width: 178px;
  height: 178px;
  max-width: 178px;
  min-width: 178px;
  object-fit: contain;
  justify-self: center;
  border-radius: 28px;
  border: 1px solid rgba(23,215,255,.4);
  box-shadow: 0 0 40px rgba(23,215,255,.18), var(--shadow);
  transition: transform .3s var(--ease), box-shadow .3s;
}

.app-feature > div:last-child {
  max-width: 340px;
}

.app-icon:hover {
  transform: scale(1.04) rotate(-1deg);
  box-shadow: 0 0 60px rgba(23,215,255,.3), var(--shadow);
}
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid rgba(255,255,255,.15); border-radius: 8px;
  padding: 8px 14px; font-weight: 700; font-size: 13px;
  background: rgba(255,255,255,.04); margin: 4px 4px 4px 0;
}

/* ── Grid ──────────────────────────────────────────────────────────────── */
.grid-2 {
  display: grid; grid-template-columns: 1fr 1fr; gap: 28px;
}

/* ── Panel ─────────────────────────────────────────────────────────────── */
.panel { padding: 36px; }

/* ── Forms ─────────────────────────────────────────────────────────────── */
.form { display: grid; gap: 18px; }
.form label {
  display: grid; gap: 8px;
  color: #c8d8e8; font-weight: 600; font-size: 14px;
}
.form input, .form textarea, .form select {
  width: 100%;
  background: rgba(6,20,38,.9);
  border: 1.5px solid rgba(36,66,94,.8);
  border-radius: 10px; color: var(--text);
  padding: 13px 16px; font: inherit; font-size: 15px;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form input:focus, .form textarea:focus, .form select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(23,215,255,.12);
}
.form input.readonly, .form input[readonly] {
  opacity: .7; cursor: default;
  background: rgba(6,20,38,.5);
}
.form textarea { min-height: 150px; resize: vertical; }
.hp { position: absolute; left: -9999px; }
.notice { font-size: 13px; color: var(--muted); }

/* ── Page Hero ─────────────────────────────────────────────────────────── */
.page-hero {
  padding: 80px 0 48px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.page-hero::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: .3;
}
.page-hero h1 {
  font-family: var(--ff-head);
  font-size: clamp(36px, 5vw, 58px);
  margin: 12px 0 16px; line-height: 1.05;
}
.page-hero p { color: #b0c4d8; font-size: 17px; max-width: 600px; }

/* ── Legal ─────────────────────────────────────────────────────────────── */
.legal { max-width: 820px; }
.legal h2 {
  font-family: var(--ff-head); color: var(--cyan);
  font-size: 20px; margin: 36px 0 12px;
}
.legal p { color: #c0d0de; margin-bottom: 14px; line-height: 1.7; }

/* ── Footer ────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 32px;
  background: linear-gradient(180deg, #020810, #01050d);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute; top: 0; left: 10%; right: 10%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(23,215,255,.3), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 48px;
}
.footer-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--ff-head); font-size: 20px;
  font-weight: 900; letter-spacing: .18em; margin-bottom: 12px;
}
.footer-brand img { width: 44px; height: 44px; }
.footer-desc { color: var(--muted); font-size: 13.5px; line-height: 1.65; max-width: 240px; }
.footer-col h4 {
  color: var(--text); font-weight: 700; font-size: 12px;
  text-transform: uppercase; letter-spacing: .12em;
  margin-bottom: 16px;
}
.footer-col a, .footer-col span {
  display: block; color: var(--muted);
  margin-bottom: 10px; font-size: 13.5px;
  transition: color .2s;
}
.footer-col a:hover { color: var(--cyan); }
.copyright {
  text-align: center; color: #4a6070;
  font-size: 12.5px; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.04);
}

/* ── Scrolled header shadow ────────────────────────────────────────────── */
.site-header { transition: box-shadow .3s; }

/* ── Desktop enhancements (1024px+) ───────────────────────────────────── */
@media (min-width: 1024px) {
  .hero { padding: 120px 0 100px; }
  .hero-inner { gap: 80px; min-height: 540px; }
  .cards { grid-template-columns: repeat(4, 1fr); margin-top: -72px; }
  .section { padding: 112px 0; }
}

/* ── Tablet (768–1023px) ───────────────────────────────────────────────── */
@media (max-width: 1023px) and (min-width: 768px) {
  .hero-inner { grid-template-columns: 1fr 1fr; gap: 40px; min-height: 400px; }
  .hero h1 { font-size: clamp(32px, 5vw, 52px); }
  .cards { grid-template-columns: repeat(2, 1fr); margin-top: 24px; gap: 16px; }
  .app-feature { grid-template-columns: 1fr 140px 1fr; gap: 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand, .footer-desc { margin-bottom: 0; }
  .section { padding: 72px 0; }
}

/* ── Mobile (below 768px) ──────────────────────────────────────────────── */
@media (max-width: 767px) {
  :root { --nav-h: 68px; }
  .container { width: min(var(--max), calc(100% - 32px)); }

  .menu-btn { display: flex; align-items: center; }
  .nav-links {
    display: none; position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(2,9,20,.97);
    backdrop-filter: blur(20px);
    flex-direction: column; padding: 20px 24px 28px;
    gap: 4px; border-bottom: 1px solid var(--line);
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 13px 16px; border-radius: 8px;
    font-size: 15px; width: 100%;
  }
  .nav-links a.nav-cta { margin-left: 0; margin-top: 8px; text-align: center; justify-content: center; }

  .brand { font-size: 18px; }
  .brand img { width: 38px; height: 38px; }

  .hero { padding: 56px 0 48px; }
  .hero-inner {
    grid-template-columns: 1fr;
    min-height: auto; gap: 32px;
  }
  .hero-art { display: none; }
  .hero h1 { font-size: clamp(32px, 8vw, 44px); }
  .hero p { font-size: 16px; }

  .cards { grid-template-columns: 1fr; margin-top: 24px; gap: 14px; }
  .card { min-height: auto; padding: 24px 22px; }

  .section { padding: 56px 0; }
  .section-title { font-size: clamp(24px, 6vw, 32px); }

  .app-feature {
    grid-template-columns: 1fr;
    gap: 28px; text-align: center;
  }
  .app-icon {
    width: 120px;
    height: 120px;
    min-width: 120px;
    max-width: 120px;
    margin: 0 auto;
  }
  .actions { justify-content: center; }

  .grid-2 { grid-template-columns: 1fr; gap: 20px; }
  .panel { padding: 24px 20px; }

  .page-hero { padding: 48px 0 32px; }
  .page-hero h1 { font-size: clamp(28px, 7vw, 40px); }

  .footer-grid {
    grid-template-columns: 1fr 1fr; gap: 28px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-desc { max-width: 100%; }

  .badge { margin: 4px 4px 4px 0; }
}

@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .actions .btn { justify-content: center; }
}