:root {
  --bg: #070b14;
  --bg-soft: #0d1424;
  --panel: rgba(19, 29, 50, 0.72);
  --line: rgba(255, 255, 255, 0.12);
  --text: #eaf1ff;
  --text-soft: #afbdd8;
  --brand: #67a0ff;
  --brand-2: #73f0d2;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 10%, #15213b 0%, var(--bg) 40%);
  line-height: 1.6;
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 10%, transparent 72%);
  z-index: -1;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
  background: rgba(7, 11, 20, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #071327;
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 0.95rem;
}

.brand-text small {
  color: var(--text-soft);
  font-size: 0.75rem;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  color: var(--text-soft);
  text-decoration: none;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--text);
}

.lang-toggle {
  height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

.lang-toggle:hover {
  background: rgba(255, 255, 255, 0.09);
}

.hero {
  padding: 92px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: stretch;
}

.chip {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(103, 160, 255, 0.4);
  background: rgba(103, 160, 255, 0.12);
  color: #b9cfff;
  font-size: 0.82rem;
  margin: 0 0 16px;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
}

.hero-copy h1 {
  font-size: clamp(2rem, 4.4vw, 3.3rem);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.lead {
  color: var(--text-soft);
  font-size: 1.05rem;
  max-width: 54ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  color: #071327;
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
}

.btn-ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.hero-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  margin-bottom: 14px;
}

.hero-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.hero-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #d4def2;
}

.hero-card li .num {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--brand-2);
  background: rgba(115, 240, 210, 0.14);
}

.hero-card li .txt {
  display: inline-block;
}

.hero-card p {
  margin: 18px 0 0;
  color: var(--text-soft);
}

.section {
  padding: 78px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(13, 20, 36, 0.4), rgba(13, 20, 36, 0.02));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: 26px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.card p {
  color: var(--text-soft);
  margin-bottom: 0;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 14px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.timeline-item span {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #021020;
  font-weight: 800;
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
}

.timeline-item h3 {
  margin-bottom: 6px;
}

.timeline-item p {
  margin: 0;
  color: var(--text-soft);
}

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stack span {
  padding: 8px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: #d2e0ff;
  font-weight: 500;
}

.cta {
  padding-top: 30px;
}

.cta-box {
  border: 1px solid rgba(103, 160, 255, 0.35);
  background: linear-gradient(155deg, rgba(103, 160, 255, 0.2), rgba(115, 240, 210, 0.08));
  border-radius: 18px;
  padding: 28px;
}

.cta-box p {
  color: #d7e3fb;
}

.contact-list {
  margin-top: 10px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.contact-list a {
  color: #d4f9ee;
  text-decoration: none;
}

.site-footer {
  padding: 36px 0 44px;
  color: #91a3c3;
}

.site-footer p {
  margin: 0;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(1120px, calc(100% - 32px));
  }

  .nav-wrap {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 10px 0;
  }

  .nav-links {
    gap: 14px;
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 60px;
  }
}