/* Fidelio Pro Landing V2 dark corporate design system.
   Usage: link css/landing-v2.css from static/website/index.html; use .section, .card, .btn and header classes for the RU landing; pair with js/landing-v2.js only for mobile navigation state. */
:root {
  --bg: #07111f;
  --bg-2: #0b1628;
  --bg-3: #101b2e;
  --surface: rgba(16, 27, 46, 0.76);
  --surface-strong: rgba(21, 35, 58, 0.92);
  --line: rgba(125, 211, 252, 0.18);
  --line-strong: rgba(56, 189, 248, 0.42);
  --text: #eef7ff;
  --muted: #a9bad1;
  --muted-2: #7f93ad;
  --cyan: #38bdf8;
  --teal: #22d3ee;
  --blue: #2563eb;
  --violet: #7c3aed;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --glow: 0 0 42px rgba(34, 211, 238, 0.22);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 0%, rgba(37, 99, 235, 0.22), transparent 34rem),
    radial-gradient(circle at 80% 10%, rgba(34, 211, 238, 0.18), transparent 30rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 44%, #08101d 100%);
  line-height: 1.65;
}
body.nav-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
.container { width: min(100% - 32px, var(--container)); margin-inline: auto; }
.skip-link { position: absolute; left: 16px; top: -80px; z-index: 100; padding: 10px 14px; border-radius: 10px; background: var(--cyan); color: #06111f; font-weight: 800; transition: top .2s ease; }
.skip-link:focus { top: 14px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid rgba(125, 211, 252, 0.14);
  background: rgba(7, 17, 31, 0.76);
  backdrop-filter: blur(18px);
}
.header-inner { min-height: 74px; display: flex; align-items: center; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; min-width: max-content; }
.brand-logo { border-radius: 12px; object-fit: cover; box-shadow: 0 0 0 1px var(--line), var(--glow); }
.brand-text { font-weight: 900; letter-spacing: -0.03em; font-size: 1.1rem; }
.brand-text span { color: var(--cyan); }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 6px; flex: 1; }
.main-nav a { padding: 9px 11px; border-radius: 999px; color: var(--muted); text-decoration: none; font-size: .93rem; font-weight: 650; transition: color .2s ease, background .2s ease; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--text); background: rgba(56, 189, 248, .11); outline: none; }
.header-cta { padding: 10px 15px; border: 1px solid var(--line-strong); border-radius: 999px; text-decoration: none; color: var(--text); font-weight: 800; box-shadow: var(--glow); }

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16, 27, 46, .58);
}
.language-switcher a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  min-height: 30px;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .05em;
}
.language-switcher a:hover,
.language-switcher a:focus-visible {
  color: var(--text);
  background: rgba(56, 189, 248, .12);
  outline: none;
}
.language-switcher a[aria-current="page"] {
  color: #03101e;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
}

.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 14px; background: rgba(16, 27, 46, .84); color: var(--text); padding: 10px; }
.nav-toggle span { display: block; height: 2px; margin: 5px 0; background: currentColor; border-radius: 2px; transition: transform .2s ease, opacity .2s 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); }

.section { position: relative; padding: clamp(72px, 9vw, 128px) 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 27, 46, .32), rgba(7, 17, 31, .08)); }
.hero { min-height: calc(100vh - 74px); display: grid; align-items: center; padding-top: clamp(76px, 8vw, 132px); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(34px, 6vw, 72px); align-items: center; }
.hero-orb { position: absolute; width: 360px; height: 360px; border-radius: 50%; filter: blur(28px); opacity: .42; pointer-events: none; }
.hero-orb-a { top: 90px; left: -120px; background: rgba(37, 99, 235, .35); }
.hero-orb-b { right: -160px; bottom: 30px; background: rgba(34, 211, 238, .25); }
.eyebrow { margin: 0 0 14px; color: var(--teal); text-transform: uppercase; letter-spacing: .13em; font-size: .78rem; font-weight: 900; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(2.35rem, 6vw, 5.7rem); line-height: .96; letter-spacing: -0.065em; max-width: 850px; }
h2 { margin: 0; font-size: clamp(2rem, 4.2vw, 3.65rem); line-height: 1.04; letter-spacing: -0.045em; }
h3 { margin: 0; font-size: 1.15rem; line-height: 1.25; }
p { color: var(--muted); margin: 0; }
.hero-subtitle { margin-top: 24px; font-size: clamp(1.08rem, 2.1vw, 1.45rem); max-width: 760px; color: #d9e8f7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 13px 20px; border-radius: 999px; border: 1px solid transparent; text-decoration: none; font-weight: 900; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.btn:hover, .btn:focus-visible { transform: translateY(-2px); outline: none; }
.btn-primary { color: #03101e; background: linear-gradient(135deg, var(--teal), var(--cyan) 48%, #60a5fa); box-shadow: var(--glow); }
.btn-secondary { color: var(--text); background: rgba(16, 27, 46, .66); border-color: var(--line-strong); }
.hero-stack { margin-top: 24px; color: var(--muted-2); font-weight: 700; }
.hero-panel, .card, .mini-card, .partners-card, .contact-card, .architecture-flow {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(16, 27, 46, .84), rgba(8, 19, 35, .62));
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}
.hero-panel { position: relative; border-radius: var(--radius-lg); padding: clamp(20px, 3vw, 30px); min-height: 520px; display: grid; align-content: center; gap: 18px; overflow: hidden; }
.hero-panel::before { content: ""; position: absolute; inset: -1px; background: radial-gradient(circle at 50% 25%, rgba(56, 189, 248, .24), transparent 45%); pointer-events: none; }
.system-card, .system-grid { position: relative; z-index: 1; }
.system-card { padding: 22px; border-radius: 22px; border: 1px solid rgba(125, 211, 252, .2); background: rgba(7, 17, 31, .66); }
.system-card strong { display: block; font-size: 1.35rem; }
.system-card small { color: var(--muted); }
.system-label { display: block; margin-bottom: 6px; color: var(--teal); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 900; }
.connector-line { width: 2px; height: 36px; margin: -6px auto; background: linear-gradient(var(--cyan), transparent); }
.system-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.system-grid div { padding: 15px; border-radius: 16px; background: rgba(56, 189, 248, .1); border: 1px solid rgba(56, 189, 248, .22); color: #dff7ff; font-weight: 800; }

.visual-panel { overflow: hidden; }
.hero-illustration, .architecture-illustration, .card-visual, .mini-card-visual, .step-visual, .partners-visual {
  display: block;
  width: 100%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
}
.hero-illustration { position: relative; z-index: 1; max-height: 560px; filter: drop-shadow(0 0 32px rgba(34, 211, 238, .16)); }
.card-visual { height: 126px; margin: -8px 0 18px; border-radius: 18px; background: rgba(7, 17, 31, .28); }
.mini-card-visual { height: 92px; margin: -6px 0 16px; border-radius: 16px; background: rgba(7, 17, 31, .24); }
.step-visual { height: 94px; margin: -8px 0 16px; border-radius: 16px; background: rgba(7, 17, 31, .22); }
.architecture-illustration { min-height: 260px; filter: drop-shadow(0 0 28px rgba(37, 99, 235, .14)); }
.partners-card { grid-template-columns: minmax(180px, 300px) 1fr auto; }
.partners-visual { max-width: 300px; border-radius: 20px; background: rgba(7, 17, 31, .25); }
.card-icon, .pill { position: relative; z-index: 1; }

.section-heading { max-width: 780px; margin-bottom: 36px; }
.section-heading p:not(.eyebrow) { margin-top: 16px; font-size: 1.08rem; }
.section-heading.compact { max-width: 860px; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card { border-radius: var(--radius-md); padding: 24px; min-height: 248px; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow), var(--glow); }
.card p { margin-top: 13px; }
.card-icon, .pill { display: inline-flex; align-items: center; justify-content: center; margin-bottom: 18px; border: 1px solid var(--line-strong); color: var(--teal); background: rgba(34, 211, 238, .08); font-weight: 900; }
.card-icon { width: 42px; height: 42px; border-radius: 14px; }
.pill { min-height: 30px; padding: 5px 10px; border-radius: 999px; font-size: .78rem; }
.solution.featured { border-color: rgba(34, 211, 238, .5); background: linear-gradient(145deg, rgba(14, 116, 144, .26), rgba(16, 27, 46, .82)); }
.card-link { display: inline-flex; margin-top: 18px; color: var(--teal); font-weight: 900; text-decoration: none; }
.card-link:hover, .card-link:focus-visible { text-decoration: underline; outline: none; }
.architecture-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 36px; align-items: center; }
.architecture-grid p { margin-top: 16px; }
.architecture-flow { border-radius: var(--radius-lg); padding: 26px; display: grid; grid-template-columns: 1fr auto 1fr auto 1.25fr; gap: 12px; align-items: center; }
.architecture-flow.visual-panel { display: block; }
.flow-node, .flow-targets span { padding: 18px; border-radius: 18px; border: 1px solid rgba(125, 211, 252, .2); background: rgba(7, 17, 31, .66); font-weight: 900; text-align: center; }
.flow-node.accent { background: linear-gradient(135deg, rgba(34, 211, 238, .18), rgba(37, 99, 235, .2)); color: #e9fbff; }
.flow-arrow { color: var(--teal); font-size: 1.8rem; font-weight: 900; }
.flow-targets { display: grid; gap: 10px; }
.flow-targets span { padding: 12px; color: var(--muted); }
.quad-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.mini-card { border-radius: var(--radius-md); padding: 22px; }
.mini-card p { margin-top: 10px; }
.steps-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; counter-reset: step; }
.steps-list li { position: relative; padding: 24px; border-radius: var(--radius-md); background: rgba(16, 27, 46, .62); border: 1px solid var(--line); }
.steps-list span { display: inline-flex; margin-bottom: 26px; color: var(--cyan); font-weight: 950; letter-spacing: .08em; }
.steps-list li::before { content: ""; position: absolute; top: 37px; left: 66px; right: 22px; height: 1px; background: linear-gradient(90deg, rgba(56,189,248,.5), transparent); }
.steps-list p { margin-top: 10px; }
.partners-card, .contact-grid { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.partners-card { border-radius: var(--radius-lg); padding: clamp(24px, 4vw, 42px); grid-template-columns: minmax(180px, 300px) 1fr auto; }
.partners-card p { margin-top: 14px; max-width: 760px; }
.final-cta { padding-top: 86px; }
.contact-grid { align-items: stretch; }
.contact-grid > div:first-child p { margin-top: 16px; max-width: 760px; }
.support-note { color: var(--muted-2); font-size: .96rem; }
.contact-card { min-width: min(430px, 100%); border-radius: var(--radius-lg); padding: 22px; display: grid; gap: 12px; align-content: center; }
.contact-link { display: flex; align-items: center; justify-content: center; min-height: 50px; padding: 13px 16px; border-radius: 16px; border: 1px solid var(--line); background: rgba(7, 17, 31, .55); color: var(--text); text-decoration: none; font-weight: 900; text-align: center; }
.contact-link.primary { color: #03101e; background: linear-gradient(135deg, var(--teal), var(--cyan)); }
.contact-link.muted { color: var(--teal); }
.contact-link:hover, .contact-link:focus-visible { border-color: var(--line-strong); outline: none; }
.site-footer { border-top: 1px solid var(--line); padding: 42px 0 28px; background: rgba(4, 10, 20, .66); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: start; }
.footer-brand { margin-bottom: 12px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 18px; max-width: 520px; }
.footer-links a { color: var(--muted); text-decoration: none; font-weight: 700; }
.footer-links a:hover, .footer-links a:focus-visible { color: var(--teal); outline: none; }
.legal { margin-top: 28px; padding-top: 22px; border-top: 1px solid rgba(125, 211, 252, .12); }
.legal p { font-size: .9rem; color: var(--muted-2); }

@media (max-width: 1060px) {
  .header-cta { display: none; }
  .main-nav a { padding-inline: 8px; font-size: .88rem; }
  .hero-grid, .architecture-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-panel { min-height: auto; }
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quad-grid, .steps-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .architecture-flow { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); justify-self: center; }
  .partners-card { grid-template-columns: 1fr; }
  .partners-visual { max-width: 360px; }
}
@media (max-width: 820px) {
  .header-inner { justify-content: space-between; flex-wrap: wrap; gap: 10px; }
  .language-switcher { order: 3; width: 100%; justify-content: center; }
  .nav-toggle { display: inline-block; }
  .main-nav { position: fixed; top: 74px; left: 16px; right: 16px; display: grid; gap: 8px; padding: 16px; border: 1px solid var(--line); border-radius: 22px; background: rgba(7, 17, 31, .96); box-shadow: var(--shadow); transform: translateY(-12px); opacity: 0; pointer-events: none; transition: transform .2s ease, opacity .2s ease; }
  body.nav-open .main-nav { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a { padding: 13px 14px; border-radius: 14px; background: rgba(16, 27, 46, .62); }
  .hero { min-height: auto; }
}
@media (max-width: 620px) {
  .container { width: min(100% - 24px, var(--container)); }
  .section { padding: 62px 0; }
  .card-grid, .quad-grid, .steps-list, .system-grid { grid-template-columns: 1fr; }
  .card-visual { height: 112px; }
  .mini-card-visual, .step-visual { height: 88px; }
  .architecture-illustration { min-height: 0; }
  .partners-visual { max-width: 100%; }
  .card { min-height: auto; padding: 20px; }
  .hero-actions .btn { width: 100%; }
  .hero-panel, .partners-card, .contact-card, .architecture-flow { border-radius: 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}
@media (max-width: 380px) {
  .brand-text { font-size: 1rem; }
  .brand-logo { width: 38px; height: 35px; }
  .nav-toggle { width: 42px; height: 42px; }
  h1 { font-size: 2.18rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}