:root {
  --ink: #172421;
  --muted: #5a6b66;
  --line: #dce5e1;
  --paper: #f7faf8;
  --white: #ffffff;
  --teal: #087f73;
  --teal-dark: #055e56;
  --amber: #e7a93b;
  --soft: #e7f3ef;
  --danger: #b52727;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(247, 250, 248, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-size: clamp(21px, 2.2vw, 28px);
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: var(--white);
  background: var(--teal);
  border-radius: 8px;
}

.nav {
  gap: clamp(10px, 2vw, 22px);
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 700;
}

.nav a {
  padding: 10px 4px;
  border-bottom: 3px solid transparent;
}

.nav a:hover,
.nav a:focus-visible {
  border-color: var(--amber);
}

.hero,
.admin-hero {
  display: grid;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(42px, 7vw, 96px) clamp(18px, 5vw, 72px);
  background:
    linear-gradient(110deg, rgba(247, 250, 248, 1) 0%, rgba(247, 250, 248, 0.84) 58%, rgba(231, 243, 239, 0.9) 100%),
    radial-gradient(circle at 88% 18%, rgba(231, 169, 59, 0.22), transparent 28%);
}

.hero {
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.56fr);
}

.hero-copy {
  max-width: 860px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: clamp(18px, 1.9vw, 23px);
  font-weight: 800;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 6.6vw, 80px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 26px;
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 12px;
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.2;
}

.lead,
article p,
.hero-panel p,
.auth-link {
  color: var(--muted);
  font-size: clamp(20px, 2.4vw, 28px);
}

.lead {
  max-width: 720px;
  margin: 24px 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border: 2px solid var(--teal);
  border-radius: 8px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  cursor: pointer;
}

.button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.button.primary {
  color: var(--white);
  background: var(--teal);
}

.button.secondary {
  color: var(--teal-dark);
  background: transparent;
}

.hero-panel,
.auth-card,
.about-grid article,
.service-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.hero-panel {
  padding: clamp(24px, 4vw, 42px);
}

.section {
  padding: clamp(58px, 8vw, 108px) clamp(18px, 5vw, 72px);
}

.about {
  background: var(--white);
}

.business {
  background: var(--soft);
}

.about-grid,
.service-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.about-grid article,
.service-list article {
  padding: clamp(22px, 3vw, 34px);
}

.service-list span {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--amber);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 900;
}

.auth-page {
  display: grid;
  min-height: calc(100vh - 76px);
  place-items: center;
  padding: clamp(34px, 7vw, 88px) 18px;
}

.auth-card {
  width: min(100%, 620px);
  padding: clamp(26px, 5vw, 48px);
}

.auth-card form {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.auth-card [data-step] {
  display: grid;
  gap: 18px;
}

.auth-card [hidden] {
  display: none;
}

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

.step-copy {
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: clamp(19px, 2.1vw, 24px);
  font-weight: 800;
}

input {
  width: 100%;
  min-height: 58px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
}

input:focus {
  border-color: var(--teal);
  outline: 3px solid rgba(8, 127, 115, 0.16);
}

.form-message {
  min-height: 32px;
  margin: 0;
  color: var(--danger);
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
}

.auth-link a {
  color: var(--teal-dark);
  font-weight: 900;
}

.admin-hero {
  min-height: 58vh;
}

@media (max-width: 860px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero,
  .about-grid,
  .service-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .hero-actions,
  .auth-card .button {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }
}