:root {
  color-scheme: light;
  --ink: #1b2a41;
  --ink-soft: #3a4863;
  --accent: #e76f51;
  --accent-2: #2a9d8f;
  --accent-3: #f4a261;
  --bg: #f6f0e9;
  --bg-2: #e7eef7;
  --card: #ffffff;
  --line: rgba(27, 42, 65, 0.12);
  --shadow: 0 24px 50px rgba(27, 42, 65, 0.12);
  --radius: 18px;
  --mono: "IBM Plex Mono", monospace;
  --body: "IBM Plex Sans KR", "Noto Sans KR", sans-serif;
  --heading: "Gowun Batang", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background:
    radial-gradient(60rem 60rem at -10% -20%, #fff2d8 0%, transparent 60%),
    radial-gradient(70rem 60rem at 110% -10%, #d9eeff 0%, transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

img {
  max-width: 100%;
  display: block;
  border-radius: 16px;
}

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

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(246, 240, 233, 0.85);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.brand-mark {
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.brand-title {
  font-size: 1.1rem;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.nav a {
  padding: 6px 10px;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.nav a:hover {
  background: rgba(231, 111, 81, 0.12);
  color: var(--accent);
}

.hero {
  padding: 80px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: center;
}

.hero-copy h1 {
  font-family: var(--heading);
  font-size: clamp(2.2rem, 2.8vw, 3.2rem);
  margin-bottom: 16px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 12px;
}

.lead {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.hero-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.95rem;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 24px rgba(231, 111, 81, 0.3);
}

.btn.primary:hover {
  transform: translateY(-2px);
}

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

.btn.ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn.tiny {
  padding: 8px 12px;
  font-size: 0.8rem;
}

.btn.danger {
  background: #ffe1da;
  color: #9b2c1f;
}

.hero-meta {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.meta-card {
  background: #fff;
  padding: 12px 14px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(27, 42, 65, 0.08);
  border: 1px solid var(--line);
}

.meta-title {
  display: block;
  font-size: 0.75rem;
  color: var(--ink-soft);
}

.meta-value {
  font-weight: 600;
}

.hero-visual img {
  animation: float 7s ease-in-out infinite;
  box-shadow: var(--shadow);
}

.section {
  padding: 60px 0;
  scroll-margin-top: 80px;
}

.section-head h2 {
  font-family: var(--heading);
  font-size: clamp(1.6rem, 2vw, 2.2rem);
  margin-bottom: 10px;
}

.section-head p {
  color: var(--ink-soft);
  margin-bottom: 30px;
  line-height: 1.7;
}

.grid {
  display: grid;
  gap: 20px;
}

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

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

.suite-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.suite-card h3 {
  margin-bottom: 10px;
}

.suite-card p {
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.suite-card .list {
  margin: 10px 0 0;
}

.suite-actions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.card {
  background: var(--card);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(27, 42, 65, 0.08);
  animation: fade-up 0.6s ease both;
}

.card.highlight {
  background: linear-gradient(135deg, #fff 0%, #fff4ef 100%);
  border-color: rgba(231, 111, 81, 0.2);
}

.step-grid {
  margin-top: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.step-card {
  position: relative;
  overflow: hidden;
}

.step-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--accent-2);
  color: #fff;
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.case-grid {
  margin-top: 12px;
}

.case-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(231, 111, 81, 0.12);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-card h3 {
  margin-top: 12px;
}

.card h3 {
  margin-top: 0;
  font-size: 1.2rem;
}

.list {
  padding-left: 18px;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.list.ordered {
  list-style: decimal;
}

.list li {
  margin-bottom: 8px;
}

.note {
  margin-top: 20px;
  background: rgba(42, 157, 143, 0.12);
  border: 1px dashed rgba(42, 157, 143, 0.35);
  padding: 16px 18px;
  border-radius: 16px;
  color: #195c55;
}

#calc-warnings {
  display: none;
}

.share-block {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.share-output {
  display: none;
  gap: 8px;
  grid-template-columns: 1fr auto;
}

.share-output.active {
  display: grid;
}

.share-output input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font-size: 0.9rem;
  background: #fff;
}

.ad-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.ad-card {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 10px 30px rgba(27, 42, 65, 0.08);
}

.ad-card img {
  width: 92px;
  height: 92px;
  border-radius: 14px;
  object-fit: cover;
  border: 1px solid rgba(27, 42, 65, 0.12);
}

.ad-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ad-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.ad-meta {
  font-size: 0.8rem;
  color: #6c7a90;
}

.ad-price {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}

.ad-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ad-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eef4ff;
  color: #1e4ad7;
  font-size: 0.78rem;
  font-weight: 700;
}

.ad-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  background: #fff3ec;
  color: #d05b0f;
  font-size: 0.78rem;
  font-weight: 700;
}

.ad-pill.soft {
  background: #eef7ff;
  color: #1b6ad7;
}

.ad-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  font-weight: 700;
  color: var(--accent);
  font-size: 0.9rem;
}

.ad-cta::after {
  content: '→';
  font-size: 0.85em;
}

.ad-card.skeleton {
  gap: 12px;
  align-items: center;
}

.ad-card.skeleton .ad-thumb {
  width: 92px;
  height: 92px;
  border-radius: 14px;
  background: linear-gradient(120deg, rgba(27, 42, 65, 0.08), rgba(27, 42, 65, 0.02));
}

.ad-card.skeleton .ad-lines {
  flex: 1;
  display: grid;
  gap: 10px;
}

.ad-card.skeleton .ad-lines span {
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(27, 42, 65, 0.08), rgba(27, 42, 65, 0.02));
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  align-items: start;
}

.board-panel,
.board-detail {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 20px;
  box-shadow: var(--shadow);
}

.board-detail {
  margin-top: 24px;
}

.panel-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.board-form {
  display: grid;
  gap: 12px;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 120px;
}

.post-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  background: #fff;
  display: grid;
  gap: 8px;
  cursor: pointer;
}

.post-item.active {
  border-color: var(--accent-2);
  box-shadow: 0 10px 24px rgba(42, 157, 143, 0.18);
}

.list-empty {
  padding: 10px 4px;
  color: #6c7a90;
  font-size: 0.9rem;
}

.post-title {
  font-weight: 600;
}

.post-meta {
  font-size: 0.8rem;
  color: #6c7a90;
}

.post-body {
  line-height: 1.7;
  color: var(--ink-soft);
}

.comment-section {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

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

.comment-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
  display: grid;
  gap: 6px;
}

.comment-meta {
  font-size: 0.78rem;
  color: #6c7a90;
}

.btn.full {
  width: 100%;
  justify-content: center;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: start;
}

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

fieldset {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  background: #fff;
}

legend {
  font-weight: 600;
  padding: 0 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

label.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
}

input,
select,
textarea {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.95rem;
  font-family: var(--body);
}

textarea {
  resize: vertical;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 12px;
}

.inline-actions {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.help {
  font-size: 0.78rem;
  color: #7a869a;
}

.dependents {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dependents-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dependents-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dependent-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) auto;
  gap: 12px;
  align-items: end;
  background: #f9fafc;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.calc-results {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.result-card {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 18px;
  box-shadow: 0 12px 24px rgba(27, 42, 65, 0.08);
}

.result-card.primary {
  background: linear-gradient(135deg, #fff 0%, #fef6f0 100%);
  border-color: rgba(231, 111, 81, 0.2);
}

#estimate-range-card {
  display: none;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(27, 42, 65, 0.1);
  font-size: 0.95rem;
}

.result-row.total {
  border-bottom: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
}

.result-card summary {
  cursor: pointer;
  font-weight: 600;
  margin-bottom: 10px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  border-bottom: 1px solid var(--line);
  padding: 12px 10px;
  text-align: left;
}

.table th {
  background: #f9fafc;
  font-weight: 600;
}

.flow-img {
  margin: 16px 0 10px;
  border-radius: 12px;
}

.caption {
  font-size: 0.85rem;
  color: #6c7a90;
  margin-top: 10px;
}

.references {
  padding-left: 20px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.references li {
  margin-bottom: 10px;
}

.references a {
  color: var(--accent-2);
  text-decoration: underline;
}

.site-footer {
  padding: 40px 0 60px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

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

.footer-tags span {
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: #fff;
}

.mini {
  font-size: 0.82rem;
  color: #6c7a90;
  line-height: 1.6;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .nav {
    display: none;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .dependent-row {
    grid-template-columns: 1fr;
  }

  .calc-results {
    position: static;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}