:root {
  --ink: #172026;
  --muted: #5b6871;
  --line: #dfe5e9;
  --paper: #ffffff;
  --soft: #f5f8f6;
  --mint: #00a884;
  --mint-dark: #087b66;
  --coral: #f26d5b;
  --sun: #f6c85f;
  --blue: #3b6fd8;
  --shadow: 0 18px 50px rgba(23, 32, 38, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 28px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(223, 229, 233, 0.9);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 24px;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--mint), var(--blue));
  font-size: 15px;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 15px;
  color: #24313a;
}

.nav a {
  white-space: nowrap;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover,
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(23, 32, 38, 0.16);
}

.button.primary {
  background: var(--mint-dark);
}

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

.button.coral {
  background: var(--coral);
}

.button.full {
  width: 100%;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  font-size: 26px;
  cursor: pointer;
}

.page {
  min-height: calc(100vh - 72px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  gap: 44px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 72px 28px 54px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--mint-dark);
  font-weight: 800;
  font-size: 14px;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--coral);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  max-width: 740px;
  margin-bottom: 20px;
  font-size: clamp(40px, 5.2vw, 72px);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 630px;
  gap: 12px;
}

.metric {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.metric strong {
  display: block;
  margin-bottom: 4px;
  font-size: 24px;
}

.metric span {
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  position: relative;
}

.hero-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.floating-panel {
  position: absolute;
  right: -18px;
  bottom: 26px;
  width: min(320px, 88%);
  padding: 18px;
  border: 1px solid rgba(223, 229, 233, 0.95);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 34px rgba(23, 32, 38, 0.15);
}

.floating-panel strong {
  display: block;
  margin-bottom: 7px;
}

.floating-panel p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 72px 28px;
}

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

.section-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: end;
  margin-bottom: 30px;
}

.section-head h2,
.page-title h1 {
  margin-bottom: 8px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-head p,
.page-title p {
  max-width: 720px;
  color: var(--muted);
  font-size: 17px;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.22;
}

.card p,
.card li {
  color: var(--muted);
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 16px;
  border-radius: 8px;
  background: #e7f6f2;
  color: var(--mint-dark);
  font-weight: 900;
}

.image-band {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 32px;
  align-items: center;
}

.image-band img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border-radius: var(--radius);
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--mint);
}

.week-list {
  display: grid;
  gap: 14px;
}

.week {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.week-label {
  color: var(--mint-dark);
  font-weight: 800;
}

.week h3 {
  margin-bottom: 8px;
}

.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.curriculum-card {
  display: grid;
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.curriculum-card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
}

.curriculum-card h3 {
  margin-bottom: 0;
  font-size: 22px;
  line-height: 1.24;
}

.curriculum-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.curriculum-meta {
  display: grid;
  gap: 4px;
  padding: 12px;
  border-radius: var(--radius);
  background: #f8faf9;
}

.curriculum-meta span {
  color: var(--muted);
}

.curriculum-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.curriculum-columns ul,
.user-curriculum ul {
  display: grid;
  gap: 6px;
  padding-left: 18px;
  margin: 8px 0 0;
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: #f0f3f5;
  color: #384650;
  font-size: 13px;
}

.pricing-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.price-card.featured {
  border-color: var(--mint);
  box-shadow: 0 12px 30px rgba(0, 168, 132, 0.12);
}

.badge {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  background: #fff3e8;
  color: #9a4a16;
  font-size: 13px;
  font-weight: 800;
}

.price {
  margin: 14px 0 18px;
  font-size: 34px;
  font-weight: 900;
  letter-spacing: 0;
}

.price small {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}

.price-card ul {
  flex: 1;
  padding-left: 18px;
  color: var(--muted);
}

.form-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 26px;
  align-items: start;
}

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

.field {
  display: grid;
  gap: 7px;
}

.field label {
  font-weight: 800;
  font-size: 14px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  border: 1px solid #cfd8dd;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

.field textarea {
  min-height: 116px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.notice {
  padding: 18px;
  border: 1px solid #f1ddb3;
  border-radius: var(--radius);
  background: #fff8e8;
}

.notice p {
  margin-bottom: 0;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 12px;
}

.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: start;
}

.step::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

th,
td {
  padding: 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f8faf9;
}

tr:last-child td {
  border-bottom: 0;
}

.auth-shell {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  min-height: calc(100vh - 72px);
}

.auth-art {
  position: relative;
  min-height: 560px;
  background: url("https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1200&q=80") center/cover;
}

.auth-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(23, 32, 38, 0.28);
}

.auth-copy {
  position: absolute;
  left: 34px;
  right: 34px;
  bottom: 34px;
  z-index: 1;
  color: #fff;
}

.auth-copy h1 {
  font-size: 40px;
  line-height: 1.1;
}

.auth-panel {
  display: grid;
  align-content: center;
  padding: 48px;
  background: #fff;
}

.mini-link {
  color: var(--mint-dark);
  font-weight: 800;
}

.mypage-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
}

.profile-box {
  height: fit-content;
}

.application-list {
  display: grid;
  gap: 12px;
}

.application-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.application-item strong {
  display: block;
  margin-bottom: 6px;
}

.user-curriculum {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.user-curriculum h3 {
  margin: 10px 0 6px;
  font-size: 20px;
}

.user-curriculum p {
  margin-bottom: 0;
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.faq-item h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 34px 28px;
  border-top: 1px solid var(--line);
  background: #10161b;
  color: #fff;
}

.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.76);
}

.footer-brand {
  color: #fff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-content: start;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 100;
  transform: translate(-50%, 20px);
  max-width: min(92vw, 520px);
  padding: 13px 16px;
  border-radius: 8px;
  background: #10161b;
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.empty-state {
  padding: 26px;
  border: 1px dashed #b8c5cc;
  border-radius: var(--radius);
  background: #fbfcfc;
  color: var(--muted);
}

.social-dashboard,
.social-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 20px;
  align-items: start;
}

.social-actions {
  display: grid;
  gap: 14px;
}

.social-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0;
}

.section-head.compact {
  margin-bottom: 12px;
}

.section-head.compact h2 {
  margin: 0;
  font-size: 24px;
}

.social-list {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.social-item {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.social-item.compact-item {
  gap: 6px;
}

.social-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.social-item-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
}

.reply-box {
  padding: 12px;
  border-radius: var(--radius);
  background: #f8faf9;
}

.reply-box strong {
  display: block;
  margin-bottom: 5px;
}

@media (max-width: 920px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px;
  }

  .hero,
  .image-band,
  .form-layout,
  .auth-shell,
  .mypage-grid,
  .social-dashboard,
  .social-columns,
  .curriculum-grid,
  .curriculum-columns {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-photo {
    aspect-ratio: 16 / 10;
  }

  .floating-panel {
    right: 14px;
  }

  .grid.three,
  .grid.two,
  .pricing-wrap,
  .social-summary-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: block;
  }

  .auth-art {
    min-height: 340px;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 0 18px;
  }

  .hero,
  .section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-metrics,
  .form-row,
  .week {
    grid-template-columns: 1fr;
  }

  .auth-panel {
    padding: 32px 20px;
  }

  .footer {
    display: block;
  }
}