:root {
  --ink: #0b1220;
  --muted: #5b6475;
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --bg-tint: #eef3ff;
  --panel: #ffffff;
  --line: #e4e9f2;
  --blue: #235ff6;
  --blue-deep: #1546c7;
  --blue-soft: #e8effe;
  --amber: #f59e0b;
  --danger: #e11d48;
  --ok: #059669;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  --font-display: "Plus Jakarta Sans", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Plus Jakarta Sans", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 45% at 85% -10%, rgba(35, 95, 246, 0.16), transparent 55%),
    radial-gradient(ellipse 50% 35% at 0% 20%, rgba(35, 95, 246, 0.08), transparent 50%),
    linear-gradient(180deg, #ffffff 0%, #f7f9fc 55%, #ffffff 100%);
}

.radar-glow,
.grid-fade { display: none; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 5vw;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(228, 233, 242, 0.9);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  gap: 1.6rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.3rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 24px rgba(35, 95, 246, 0.28);
}

.btn-primary:hover { background: var(--blue-deep); }

.btn-secondary {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--blue);
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  background: #fff;
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 2.5rem;
  padding: 4rem 5vw 4.5rem;
}

.brand-lockup {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  letter-spacing: -0.02em;
  color: var(--blue);
  margin-bottom: 0.9rem;
  animation: fadeUp 0.65s ease both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  line-height: 1.15;
  font-weight: 750;
  letter-spacing: -0.035em;
  margin-bottom: 1.1rem;
  color: var(--ink);
  animation: fadeUp 0.7s ease 0.06s both;
}

.hero-sub {
  color: var(--muted);
  max-width: 34rem;
  font-size: 1.08rem;
  margin-bottom: 1.7rem;
  animation: fadeUp 0.7s ease 0.12s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  animation: fadeUp 0.7s ease 0.18s both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.radar-screen {
  position: relative;
  width: min(420px, 86vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(35, 95, 246, 0.1), transparent 58%),
    linear-gradient(160deg, #ffffff 0%, #eef3ff 100%);
  border: 1px solid #d7e2ff;
  box-shadow: var(--shadow), 0 0 0 12px rgba(35, 95, 246, 0.04);
  overflow: hidden;
}

.radar-rings,
.radar-rings::before,
.radar-rings::after {
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(35, 95, 246, 0.18);
  border-radius: 50%;
}

.radar-rings::before {
  content: "";
  inset: 22%;
}

.radar-rings::after {
  content: "";
  inset: 42%;
}

.radar-sweep {
  position: absolute;
  inset: 0;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(35, 95, 246, 0.28) 48deg, transparent 70deg);
  animation: sweep 3.8s linear infinite;
}

@keyframes sweep {
  to { transform: rotate(360deg); }
}

.blip {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.18);
  animation: blip 2.4s ease-in-out infinite;
}

.blip-a { top: 28%; left: 62%; }
.blip-b { top: 58%; left: 30%; background: var(--danger); box-shadow: 0 0 0 6px rgba(225, 29, 72, 0.15); animation-delay: 0.4s; }
.blip-c { top: 42%; left: 48%; background: var(--blue); box-shadow: 0 0 0 6px rgba(35, 95, 246, 0.18); animation-delay: 0.9s; }

@keyframes blip {
  0%, 100% { transform: scale(0.85); opacity: 0.65; }
  50% { transform: scale(1.2); opacity: 1; }
}

.radar-label {
  position: absolute;
  left: 50%;
  bottom: 12%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
  font-weight: 500;
}

.section {
  padding: 5rem 5vw;
  max-width: 1120px;
  margin: 0 auto;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.4rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.7rem;
  line-height: 1.2;
}

.section-head p { color: var(--muted); font-size: 1.05rem; }

.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.flow article {
  padding: 1.5rem 1.35rem 1.6rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03);
}

.step {
  display: inline-block;
  font-family: var(--font-display);
  color: var(--blue);
  font-weight: 700;
  margin-bottom: 0.7rem;
}

.flow h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.55rem;
  letter-spacing: -0.02em;
}

.flow p { color: var(--muted); font-size: 0.95rem; }

.section-radar {
  max-width: none;
  margin: 0;
  padding-left: 5vw;
  padding-right: 5vw;
  background: linear-gradient(180deg, transparent, var(--bg-tint), transparent);
}

.section-radar .section-head,
.section-radar .alert-list {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

.alert-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.alert-list li {
  padding: 1.05rem 1.15rem;
  border-left: 3px solid var(--blue);
  background: #fff;
  border-radius: 0 14px 14px 0;
  font-weight: 600;
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.price-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.price-row > div {
  padding: 1.6rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}

.price-row .featured {
  border-color: rgba(35, 95, 246, 0.45);
  background: linear-gradient(180deg, #f4f7ff 0%, #ffffff 70%);
  box-shadow: 0 10px 30px rgba(35, 95, 246, 0.1);
}

.price-row h3 {
  font-family: var(--font-display);
  margin-bottom: 0.6rem;
}

.price {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 750;
  margin-bottom: 0.4rem;
  letter-spacing: -0.03em;
}

.price span {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 500;
}

.price-row p:last-child { color: var(--muted); font-size: 0.92rem; }

.fineprint {
  margin-top: 1.4rem;
  color: var(--muted);
  font-size: 0.85rem;
  max-width: 48rem;
}

.cta-band {
  text-align: center;
  border: 1px solid #d7e2ff;
  border-radius: 28px;
  background:
    radial-gradient(ellipse at top, rgba(35, 95, 246, 0.12), transparent 55%),
    #fff;
  margin-bottom: 3rem;
  box-shadow: var(--shadow);
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  margin-bottom: 0.6rem;
  letter-spacing: -0.03em;
}

.cta-band p {
  color: var(--muted);
  margin-bottom: 1.3rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 1.4rem 5vw 2rem;
  color: var(--muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
}

.site-footer a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 900px) {
  .nav { display: none; }
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 2.2rem;
  }
  .hero-visual { order: -1; }
  .radar-screen { width: min(300px, 78vw); }
  .flow,
  .alert-list,
  .price-row {
    grid-template-columns: 1fr;
  }
}