:root {
  --bg: #f3f6fb;
  --canvas: #ffffff;
  --ink: #111111;
  --muted: #586072;
  --line: #d7dce5;
  --accent: #0052cc;
  --accent-soft: #e8f0ff;
  --success: #0c7a43;
  --warn: #aa5c00;
  --max: 1360px;
  --radius: 6px;
  --section: 40px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Pretendard', 'Noto Sans KR', 'Spoqa Han Sans Neo', system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  width: 100%;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.page-shell {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 20px 64px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  background: rgba(243, 246, 251, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(215, 220, 229, 0.9);
}

.brand {
  font-weight: 700;
  letter-spacing: -0.03em;
}

.topnav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  margin-top: var(--section);
}

.panel,
.ghost-panel,
.signal-strip,
.topbar {
  border: 1px solid var(--line);
}

.panel,
.ghost-panel,
.signal-strip {
  background: var(--canvas);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.9fr);
  gap: 28px;
  align-items: end;
}

.hero-copy,
.hero-visual,
.workspace-left,
.workspace-right,
.feature-copy,
.matrix-wrap,
.report-panel-left,
.report-panel-right {
  padding: 28px;
}

.hero-copy {
  background: var(--canvas);
  border: 1px solid var(--line);
  min-height: 100%;
}

.hero-visual {
  position: relative;
  background: #0f1726;
  color: #ffffff;
  overflow: hidden;
  min-height: 100%;
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: auto -12% -18% auto;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  transform: rotate(12deg);
  animation: orbit 8s var(--ease) infinite alternate;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

h1,
h2,
h3,
p,
ul,
ol,
figure {
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  max-width: 11ch;
}

h2 {
  font-size: clamp(1.6rem, 2.2vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h3 {
  font-size: 1rem;
  line-height: 1.35;
}

.hero-body {
  margin-top: 20px;
  max-width: 60ch;
  color: var(--muted);
  font-size: 1.05rem;
}

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

.hero-badges {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin-top: 24px;
}

.hero-badges li,
.mode-chip,
.report-note,
.summary-card,
.kpi-card,
.insight-list article,
.action-list li {
  border: 1px solid var(--line);
}

.hero-badges li {
  padding: 8px 12px;
  background: var(--accent-soft);
  font-size: 14px;
}

.hero-image-frame {
  position: relative;
  overflow: hidden;
  min-height: 380px;
}

.hero-image-frame img,
.feature-image img {
  height: 100%;
  object-fit: cover;
  animation: slow-pan 14s var(--ease) infinite alternate;
}

.hero-image-frame figcaption,
.feature-image figcaption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  font-size: 12px;
  padding: 6px 10px;
  background: rgba(15, 23, 38, 0.72);
  color: #ffffff;
}

.hero-facts {
  position: absolute;
  right: 20px;
  bottom: 22px;
  display: grid;
  gap: 10px;
  width: min(220px, calc(100% - 40px));
}

.hero-facts div {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(15, 23, 38, 0.82);
  backdrop-filter: blur(6px);
  transform: translateY(0);
  animation: float-card 5s var(--ease) infinite alternate;
}

.hero-facts span {
  display: block;
  font-size: 12px;
  opacity: 0.7;
}

.hero-facts strong {
  display: block;
  margin-top: 4px;
  font-size: 1.25rem;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.signal-strip > div {
  padding: 18px 20px;
}

.signal-strip > div + div {
  border-left: 1px solid var(--line);
}

.strip-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 24px;
  align-items: start;
}

.panel-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.mode-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.mode-chip {
  background: transparent;
  color: var(--muted);
  padding: 10px 14px;
  transition: transform 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease);
}

.mode-chip.is-active {
  background: var(--accent);
  color: #ffffff;
  transform: translateY(-2px);
}

.mode-panel {
  display: none;
}

.mode-panel.is-active {
  display: block;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.field-grid.split-strong {
  grid-template-columns: 1.2fr 0.8fr;
}

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

.field,
.checkbox-field {
  display: grid;
  gap: 8px;
}

.field > span {
  font-size: 14px;
  font-weight: 700;
}

input[type='number'],
textarea,
input[type='file'] {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--line);
  background: #fbfcfe;
  padding: 14px 16px;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

textarea {
  min-height: 220px;
  resize: vertical;
}

input:focus,
textarea:focus,
button:focus,
a:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  transform: translateY(-1px);
}

input[aria-invalid='true'],
textarea[aria-invalid='true'] {
  border-color: #b42318;
  background: #fff5f5;
}

small {
  color: var(--muted);
  font-size: 12px;
}

.prefix-input,
.suffix-input {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  border: 1px solid var(--line);
  background: #fbfcfe;
}

.suffix-input {
  grid-template-columns: 1fr auto;
}

.prefix-input span,
.suffix-input span {
  padding: 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.prefix-input input,
.suffix-input input {
  border: 0;
  background: transparent;
}

.checkbox-field {
  align-content: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fbfcfe;
}

.checkbox-field input {
  width: 22px;
  height: 22px;
  margin: 0;
}

.full-span {
  grid-column: 1 / -1;
}

.button,
.link-button {
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease);
}

.button:hover,
.link-button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--ink);
  color: #ffffff;
}

.button.secondary,
.button.tertiary,
.link-button {
  background: transparent;
  color: var(--ink);
}

.button.tertiary {
  border-color: var(--line);
}

.sticky-actions {
  position: sticky;
  bottom: 14px;
  padding-top: 8px;
  background: #ffffff;
}

.result-panel {
  position: sticky;
  top: 92px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.kpi-card,
.summary-card,
.insight-list article,
.report-note,
.action-list li {
  padding: 16px;
  background: #fbfcfe;
}

.kpi-card span,
.kpi-card small {
  display: block;
}

.kpi-card strong {
  display: block;
  margin: 10px 0 6px;
  font-size: clamp(1.6rem, 2vw, 2.8rem);
  letter-spacing: -0.05em;
  font-variant-numeric: tabular-nums;
}

.kpi-card.accent {
  background: var(--accent-soft);
}

.summary-card {
  margin-top: 12px;
}

.summary-card p,
.insight-list p,
.report-note p,
.action-list {
  margin-top: 8px;
  color: var(--muted);
}

.insight-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(340px, 1.2fr);
  gap: 24px;
  align-items: stretch;
}

.ghost-panel {
  display: grid;
  align-content: center;
}

.feature-list {
  margin-top: 18px;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.feature-image {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.section-head.compact {
  margin-bottom: 0;
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 920px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

td {
  font-variant-numeric: tabular-nums;
}

td.recommend {
  background: var(--accent-soft);
}

.report-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
}

.trust-panel {
  display: grid;
  gap: 18px;
  padding: 24px 28px;
}

.trust-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 10px;
}

.action-list {
  padding-left: 18px;
}

.error-summary {
  margin-bottom: 14px;
  padding: 14px 16px;
  border: 1px solid #e4b3b3;
  background: #fff5f5;
  color: #8e1b1b;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.parallax-card {
  transform: translateY(0) rotate(0deg);
  transition: transform 260ms var(--ease);
}

.parallax-card:hover {
  transform: translateY(-4px) rotate(-0.4deg);
}

@keyframes slow-pan {
  0% { transform: scale(1.03) translateX(0); }
  100% { transform: scale(1.08) translateX(-1.5%); }
}

@keyframes float-card {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}

@keyframes orbit {
  0% { transform: rotate(8deg) translateY(0); }
  100% { transform: rotate(18deg) translateY(-10px); }
}

@media (max-width: 1100px) {
  .hero,
  .workspace,
  .feature-band,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .result-panel {
    position: static;
  }
}

@media (max-width: 780px) {
  .page-shell {
    padding: 0 14px 54px;
  }

  .topbar {
    padding: 14px 0;
  }

  .topnav {
    gap: 12px;
    font-size: 13px;
  }

  .hero-copy,
  .hero-visual,
  .workspace-left,
  .workspace-right,
  .feature-copy,
  .matrix-wrap,
  .report-panel-left,
  .report-panel-right {
    padding: 20px;
  }

  .signal-strip {
    grid-template-columns: 1fr;
  }

  .signal-strip > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .field-grid,
  .field-grid.split-strong,
  .field-grid.split-soft,
  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .sticky-actions {
    position: sticky;
    bottom: 8px;
    margin: 0 -6px;
    padding: 10px 6px 0;
  }

  h1 {
    max-width: 12ch;
  }
}

@media print {
  body {
    background: #ffffff;
  }

  .topbar,
  .hero-actions,
  .mode-switch,
  .form-actions,
  .report-actions,
  #csvInput,
  #downloadSampleCsv,
  #applyYaml {
    display: none !important;
  }

  .page-shell {
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .hero,
  .workspace,
  .feature-band,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .section {
    margin-top: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}