:root {
  --bg: #050b17;
  --bg-2: #071226;
  --panel: rgba(8, 22, 48, 0.84);
  --panel-soft: rgba(9, 28, 62, 0.72);
  --text: #f7fbff;
  --muted: #a9c7df;
  --cyan: #32d8ff;
  --cyan-2: #7ceaff;
  --gold: #f4bb5a;
  --red: #ff687c;
  --green: #4ce0aa;
  --line: rgba(124, 234, 255, 0.24);
  --shadow: 0 24px 80px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 70% 15%, rgba(44, 157, 255, .09), transparent 34%),
    radial-gradient(circle at 20% 80%, rgba(244, 187, 90, .06), transparent 30%);
  z-index: -1;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(3, 9, 20, .76);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav-wrap { min-height: 72px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .08em; }
.brand-logo { width: 42px; height: 42px; object-fit: contain; flex: 0 0 auto; filter: drop-shadow(0 0 10px rgba(246, 190, 83, .18)); }
.footer-brand .brand-logo { width: 36px; height: 36px; }
.nav-links { display: flex; gap: 24px; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: .95rem; }
.nav-links a:hover { color: var(--cyan); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cyan), #32a9ff);
  color: #00121c;
  font-weight: 800;
  box-shadow: 0 10px 30px rgba(50, 216, 255, .18);
}
.btn:hover { transform: translateY(-1px); }
.btn-small { min-height: 38px; padding: 0 16px; font-size: .9rem; }
.btn-ghost { background: transparent; border: 1px solid rgba(124, 234, 255, .5); color: var(--text); box-shadow: none; }

.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  background: url('assets/kudvo-bg.png') center/cover no-repeat;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2,8,18,.98) 0%, rgba(2,8,18,.88) 38%, rgba(2,8,18,.52) 67%, rgba(2,8,18,.38) 100%),
    linear-gradient(180deg, rgba(2,8,18,.30), rgba(2,8,18,.86));
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.12fr .88fr; gap: 56px; align-items: center; padding: 100px 0 80px; }
.eyebrow { margin: 0 0 14px; color: var(--gold); font-size: .82rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.08; }
h1 { font-size: clamp(3rem, 6vw, 5.3rem); letter-spacing: -.045em; }
h1 span, h2 span { color: var(--cyan); }
.hero-lead { max-width: 690px; margin: 24px 0 0; font-size: 1.16rem; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; color: #dbeaff; font-size: .9rem; }
.dot { width: 8px; height: 8px; display: inline-block; border-radius: 50%; margin-right: 8px; }
.dot.cyan { background: var(--cyan); box-shadow: 0 0 18px var(--cyan); }
.dot.gold { background: var(--gold); box-shadow: 0 0 18px var(--gold); }

.glass-card {
  background: linear-gradient(180deg, rgba(8, 25, 56, .83), rgba(5, 16, 36, .88));
  border: 1px solid rgba(124, 234, 255, .22);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  border-radius: 24px;
}
.hero-card { padding: 28px; }
.mini-title { color: var(--cyan); font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 18px; }
.hero-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: start; gap: 12px; }
.flow-node { text-align: center; }
.flow-node strong { display: block; margin-top: 10px; font-size: .96rem; }
.flow-node small { display: block; color: var(--muted); margin-top: 7px; line-height: 1.45; }
.flow-arrow { color: var(--gold); padding-top: 28px; font-size: 1.4rem; }
.icon-circle { width: 60px; height: 60px; margin: 0 auto; border-radius: 50%; display: grid; place-items: center; }
.icon-circle svg, .large-icon svg, .arch-icon svg { width: 32px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-circle.gold { color: var(--gold); border: 1px solid rgba(244,187,90,.55); background: rgba(244,187,90,.08); }
.icon-circle.cyan { color: var(--cyan); border: 1px solid rgba(50,216,255,.55); background: rgba(50,216,255,.08); }
.hero-note { margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.08); color: #d4e8f7; font-size: .88rem; }

.section { padding: 96px 0; position: relative; }
.section-dark { background: linear-gradient(180deg, #050b17, #061326); border-top: 1px solid rgba(255,255,255,.04); border-bottom: 1px solid rgba(255,255,255,.04); }
.two-col { display: grid; grid-template-columns: .92fr 1.08fr; gap: 70px; align-items: start; }
.section h2 { font-size: clamp(2.2rem, 4.4vw, 4rem); letter-spacing: -.035em; }
.section-lead { color: var(--muted); font-size: 1.05rem; margin: 20px 0 0; max-width: 720px; }
.section-heading { margin-bottom: 48px; }
.section-heading.center { text-align: center; }
.section-heading.center .section-lead { margin-left: auto; margin-right: auto; }
.narrow { max-width: 650px; }

.problem-list { display: grid; gap: 18px; }
.feature-row { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: rgba(8,24,54,.5); }
.feature-row h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-row p { margin: 0; color: var(--muted); }
.feature-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%; font-size: .78rem; font-weight: 900; }
.feature-icon.gold { color: var(--gold); border: 1px solid rgba(244,187,90,.5); }
.feature-icon.cyan { color: var(--cyan); border: 1px solid rgba(50,216,255,.5); }

.card-grid { display: grid; gap: 22px; }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.event-card { min-height: 270px; padding: 28px; background: linear-gradient(180deg, rgba(10,28,60,.85), rgba(5,16,36,.9)); border: 1px solid rgba(124,234,255,.16); border-radius: 22px; box-shadow: var(--shadow); }
.event-card h3 { margin-top: 22px; font-size: 1.25rem; }
.event-card p { color: var(--muted); }
.large-icon { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 16px; }
.large-icon.cyan { color: var(--cyan); background: rgba(50,216,255,.08); border: 1px solid rgba(50,216,255,.36); }
.large-icon.gold { color: var(--gold); background: rgba(244,187,90,.08); border: 1px solid rgba(244,187,90,.36); }
.event-banner { margin-top: 24px; padding: 20px 24px; display: flex; gap: 12px; align-items: baseline; }
.event-banner strong { color: var(--gold); }
.event-banner span { color: var(--muted); }

.architecture-grid { display: grid; grid-template-columns: 1fr 52px 1fr 52px 1fr; gap: 14px; align-items: center; }
.arch-column { min-width: 0; }
.arch-label { font-size: .8rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 800; margin-bottom: 12px; }
.gold-text { color: var(--gold); }
.cyan-text { color: var(--cyan); }
.arch-box { padding: 26px; min-height: 410px; border-radius: 22px; background: linear-gradient(180deg, rgba(8,24,54,.82), rgba(5,16,36,.92)); }
.gold-border { border: 1px solid rgba(244,187,90,.45); }
.cyan-border { border: 1px solid rgba(50,216,255,.45); }
.arch-box h3 { margin: 18px 0 16px; font-size: 1.15rem; }
.arch-box ul { padding-left: 18px; margin: 0; color: var(--muted); }
.arch-box li + li { margin-top: 8px; }
.arch-icon { width: 54px; height: 54px; display: grid; place-items: center; color: var(--cyan); }
.gold-border .arch-icon { color: var(--gold); }
.arch-arrow { font-size: 2rem; color: var(--cyan); text-align: center; }
.architecture-note { margin-top: 28px; padding: 20px 24px; border-left: 3px solid var(--gold); background: rgba(244,187,90,.06); color: #e9f5ff; }

.timeline { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; }
.timeline-item { min-height: 190px; padding: 18px 16px; border-radius: 18px; background: rgba(8,24,54,.72); border: 1px solid rgba(124,234,255,.15); }
.timeline-item span { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: var(--gold); border: 1px solid rgba(244,187,90,.6); font-size: .74rem; font-weight: 800; }
.timeline-item strong { display: block; margin-top: 14px; font-size: .76rem; color: var(--cyan); overflow-wrap: anywhere; }
.timeline-item small { display: block; margin-top: 10px; color: var(--muted); line-height: 1.45; }
.tamper-demo { margin-top: 34px; padding: 24px; display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 16px; align-items: center; }
.tamper-step { border-radius: 18px; padding: 18px; min-height: 122px; }
.tamper-step span { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; font-size: .75rem; font-weight: 900; }
.tamper-step strong { display: block; margin-top: 12px; }
.tamper-step small { display: block; margin-top: 7px; color: var(--muted); }
.tamper-step.ok { border: 1px solid rgba(76,224,170,.35); }
.tamper-step.ok span { color: var(--green); border: 1px solid var(--green); }
.tamper-step.warn { border: 1px solid rgba(244,187,90,.35); }
.tamper-step.warn span { color: var(--gold); border: 1px solid var(--gold); }
.tamper-step.fail { border: 1px solid rgba(255,104,124,.35); }
.tamper-step.fail span { color: var(--red); border: 1px solid var(--red); }
.tamper-arrow { color: var(--cyan); font-size: 1.6rem; }

.privacy-grid { align-items: center; }
.privacy-callout { margin-top: 26px; padding: 22px; border-radius: 18px; border: 1px solid rgba(124,234,255,.2); background: rgba(8,24,54,.55); }
.privacy-callout strong { color: var(--gold); }
.privacy-callout p { margin: 6px 0 16px; color: var(--muted); }
.privacy-flow { display: grid; grid-template-columns: 1fr 54px 1fr; gap: 14px; align-items: stretch; }
.privacy-side { padding: 24px; border-radius: 22px; background: rgba(8,24,54,.68); border: 1px solid rgba(124,234,255,.18); }
.privacy-node { padding: 14px 16px; border-radius: 14px; margin-top: 12px; background: rgba(255,255,255,.035); border: 1px solid rgba(255,255,255,.08); }
.privacy-divider { display: grid; place-items: center; position: relative; color: var(--gold); text-align: center; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.privacy-divider::before { content: ""; position: absolute; top: 0; bottom: 0; width: 1px; background: linear-gradient(transparent, var(--gold), transparent); }
.privacy-divider span { position: relative; z-index: 1; writing-mode: vertical-rl; transform: rotate(180deg); background: var(--bg); padding: 10px 0; }

.section-cta { background: linear-gradient(180deg, #061326, #040b16); }
.cta-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.cta-wrap p { color: var(--muted); }
.cta-card { padding: 30px; }
.cta-card h3 { font-size: 1.6rem; margin-bottom: 14px; }
.cta-card .btn { margin-top: 12px; }

.site-footer { padding: 34px 0; border-top: 1px solid rgba(255,255,255,.06); background: #030912; }
.footer-wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.footer-brand { margin-right: 10px; }
.site-footer p { margin: 0; color: #d9ebf8; }
.site-footer .muted { color: var(--muted); margin-left: auto; }

@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero-grid, .two-col, .cta-wrap { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-card { max-width: 700px; }
  .card-grid.three { grid-template-columns: 1fr; }
  .architecture-grid { grid-template-columns: 1fr; }
  .arch-arrow { transform: rotate(90deg); }
  .arch-box { min-height: 0; }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .tamper-demo { grid-template-columns: 1fr; }
  .tamper-arrow { transform: rotate(90deg); text-align: center; }
  .privacy-flow { grid-template-columns: 1fr; }
  .privacy-divider { min-height: 42px; }
  .privacy-divider::before { left: 0; right: 0; top: 50%; bottom: auto; height: 1px; width: auto; background: linear-gradient(90deg, transparent, var(--gold), transparent); }
  .privacy-divider span { writing-mode: initial; transform: none; padding: 0 10px; }
  .site-footer .muted { margin-left: 0; width: 100%; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 24px, 1180px); }
  .site-header .btn { display: none; }
  .hero-grid { padding: 78px 0 56px; gap: 34px; }
  .hero-flow { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); padding: 0; text-align: center; }
  .section { padding: 72px 0; }
  .timeline { grid-template-columns: 1fr; }
  .event-banner { flex-direction: column; }
}

@media (max-width: 760px) {
  .brand-logo { width: 36px; height: 36px; }
}