:root {
  --ink: #101317;
  --ink-soft: #3a414a;
  --paper: #f1f4f7;
  --panel: #ffffff;
  --mist: #e8edf3;
  --accent: #0f4c5c;
  --accent-2: #1f6f78;
  --accent-3: #8b2f2f;
  --stroke: rgba(16, 19, 23, 0.12);
  --shadow-lg: 0 26px 60px rgba(8, 12, 16, 0.18);
  --shadow-sm: 0 10px 24px rgba(8, 12, 16, 0.08);
  --radius-lg: 22px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans KR", "Noto Serif KR", serif;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
  font-weight: 400;
}

h1,
h2,
h3 {
  font-family: "Noto Serif KR", serif;
  margin: 0;
  letter-spacing: 0.2px;
  font-weight: 600;
}

p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle at 10% 10%, #dce8f2 0, transparent 45%),
    radial-gradient(circle at 90% 0%, #e9f0ef 0, transparent 45%),
    radial-gradient(circle at 30% 90%, #f1e5e2 0, transparent 45%);
}

.grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      to right,
      rgba(16, 19, 23, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(to bottom, rgba(16, 19, 23, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.35;
}

.hero {
  position: relative;
  z-index: 1;
  padding: 70px 5vw 30px;
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.95), rgba(240, 246, 250, 0.85));
  border-radius: 26px;
  padding: 36px 36px 44px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(16, 19, 23, 0.08);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
}

.hero h1 {
  font-size: clamp(2.35rem, 3.8vw, 3.4rem);
}

.hero p {
  margin-top: 16px;
  font-size: 1.02rem;
  max-width: 640px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.hero-stats div {
  background: rgba(255, 255, 255, 0.75);
  border-radius: 14px;
  padding: 14px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(16, 19, 23, 0.06);
}

.hero-stats strong {
  display: block;
  font-size: 1rem;
}

.hero-stats span {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  padding: 12px 5vw 80px;
}

.panel {
  background: var(--panel);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 26px;
  border: 1px solid rgba(16, 19, 23, 0.06);
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 260px;
  animation: floatIn 0.8s ease forwards;
}

.panel-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.panel-title span {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-weight: 600;
  color: var(--ink-soft);
}

input,
select,
textarea {
  font-family: "IBM Plex Sans KR", sans-serif;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(16, 19, 23, 0.18);
  background: #fff;
  font-size: 0.98rem;
}

textarea.code {
  min-height: 320px;
  resize: vertical;
  font-family: "IBM Plex Sans KR", sans-serif;
  background: #fdfbf9;
}

.radio-group {
  display: flex;
  gap: 12px;
  font-weight: 500;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

button {
  font-family: "IBM Plex Sans KR", sans-serif;
  border: none;
  cursor: pointer;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.12);
}

.primary {
  background: linear-gradient(135deg, var(--accent), #2c7a86);
  color: #fff;
}

.ghost {
  background: #fff;
  border: 1px solid rgba(16, 19, 23, 0.18);
  color: var(--ink-soft);
}

.panel-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer {
  text-align: center;
  padding: 40px 0 60px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .hero-inner {
    padding: 28px 22px 34px;
  }
}

@media (max-width: 720px) {
  .hero {
    padding-top: 48px;
  }

}