:root {
  --canvas: #ffffff;
  --ink: #0b0f19;
  --muted: #4b5563;
  --line: #d9dee7;
  --line-strong: #0b0f19;
  --signal: #0052cc;
  --danger: #d32f2f;
  --warn: #b45309;
  --safe: #2e7d32;
  --soft: #f7f9fc;
  --soft-blue: #eef5ff;
  --code: #111827;
  --radius: 4px;
  --space: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: 'Pretendard', 'Noto Sans KR', 'Spoqa Han Sans Neo', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.01em;
}

button,
textarea,
a {
  font: inherit;
}

button,
a {
  touch-action: manipulation;
}

button:focus-visible,
a:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--canvas);
  text-decoration: none;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  border-bottom: 1px solid var(--line-strong);
}

.site-header::before {
  content: '';
  position: absolute;
  left: 24px;
  right: 24px;
  top: 112px;
  height: 1px;
  pointer-events: none;
  background: var(--line);
}

.site-header::after {
  content: '';
  position: absolute;
  left: 9vw;
  top: 180px;
  bottom: 96px;
  width: 1px;
  pointer-events: none;
  background: var(--line);
}

.topbar {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}

.brand,
.nav-link,
.nav-cta,
.primary-link {
  color: var(--ink);
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--canvas);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link,
.nav-cta {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius);
}

.nav-link:hover,
.nav-link:focus-visible {
  background: var(--soft);
}

.nav-cta,
.primary-link,
.button.primary {
  border: 1px solid var(--signal);
  background: var(--signal);
  color: var(--canvas);
}

.nav-cta:hover,
.primary-link:hover,
.button.primary:hover {
  transform: translateY(-1px);
}

.hero-section {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.75fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
  padding: 56px 24px 96px;
}

.hero-copy {
  padding-top: 48px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 12px;
  color: var(--signal);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.94;
  letter-spacing: -0.055em;
  font-weight: 700;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 700;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
  font-weight: 700;
}

.hero-lede {
  max-width: 720px;
  margin-bottom: 28px;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--muted);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.primary-link,
.ghost-button,
.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.ghost-button,
.button.secondary,
.button.quiet {
  border: 1px solid var(--line-strong);
  background: var(--canvas);
  color: var(--ink);
}

.ghost-button:hover,
.button.secondary:hover,
.button.quiet:hover {
  background: var(--ink);
  color: var(--canvas);
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 600px;
  margin: 40px 0 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--canvas);
}

.trust-strip div {
  padding: 18px;
  border-right: 1px solid var(--line);
}

.trust-strip div:last-child {
  border-right: 0;
}

.trust-strip dt {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 28px;
  line-height: 1;
  font-weight: 700;
}

.trust-strip dd {
  margin: 6px 0 0;
  color: var(--muted);
}

.hero-visual {
  position: relative;
  margin: 96px 0 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--canvas);
  transform: rotate(1.5deg);
}

.hero-visual::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 22px;
  width: 64%;
  height: 88%;
  border: 1px solid var(--signal);
  z-index: -1;
}

.local-visual {
  width: 100%;
  height: 100%;
  min-height: inherit;
  display: grid;
  gap: 12px;
  padding: 24px;
  background: #eef5ff;
}

.local-visual span {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 14px;
  font-weight: 700;
}

.boundary-map {
  aspect-ratio: 4 / 5;
  align-content: center;
}

.boundary-map span:nth-child(2),
.boundary-map span:nth-child(4) {
  margin-left: 22%;
}

.rule-stack,
.mini-report {
  align-content: center;
}

.hero-visual figcaption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 12px;
}

.checker-shell,
.feature-section,
.report-section,
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 80px 24px;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 36px;
}

.section-heading.narrow {
  max-width: 760px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.workbench {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(360px, 1.08fr);
  gap: 20px;
  align-items: start;
}

.input-panel,
.result-panel,
.report-card,
.feature-grid article {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--canvas);
}

.input-panel,
.result-panel {
  padding: 20px;
}

.result-panel {
  margin-top: 56px;
  min-height: 560px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.privacy-badge,
.state-pill,
.risk-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.input-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
}

textarea {
  width: 100%;
  min-height: 430px;
  resize: vertical;
  padding: 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fcfdff;
  color: var(--code);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.55;
  white-space: pre;
  overflow: auto;
}

textarea::placeholder {
  color: #717b8c;
}

.help-text,
.input-meter,
.empty-state,
.error-state,
.loading-state,
.finding-meta,
.report-card p,
.report-card li,
.feature-grid p,
.site-footer p {
  color: var(--muted);
}

.help-text {
  margin: 10px 0 16px;
}

.input-meter {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.empty-state,
.loading-state,
.error-state {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
}

.empty-title {
  margin-bottom: 6px;
  color: var(--ink);
  font-weight: 700;
}

.scan-line {
  position: relative;
  height: 6px;
  margin-bottom: 16px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--canvas);
}

.scan-line::after {
  content: '';
  position: absolute;
  inset: 0;
  width: 32%;
  background: var(--signal);
  animation: scan 950ms ease-in-out infinite alternate;
}

.error-state {
  border-color: var(--danger);
  background: #fff7f7;
  color: var(--danger);
}

.risk-summary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-bottom: 18px;
  padding: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--soft-blue);
}

.risk-score {
  display: grid;
  place-items: center;
  width: 104px;
  height: 104px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 32px;
  font-weight: 700;
}

.risk-high {
  color: var(--danger);
}

.risk-medium {
  color: var(--warn);
}

.risk-low {
  color: var(--safe);
}

.risk-none {
  color: var(--safe);
}

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

.finding {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--canvas);
}

.finding summary {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  cursor: pointer;
  font-weight: 700;
}

.finding summary:hover {
  background: var(--soft);
}

.finding-body {
  padding: 0 16px 16px;
}

.finding-body code,
.fix-block {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 13px;
}

.fix-block {
  display: block;
  overflow-x: auto;
  margin: 12px 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9fafb;
  color: var(--code);
  white-space: pre;
}

.copy-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

.copy-button {
  min-height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--canvas);
  cursor: pointer;
}

.copy-button:hover {
  background: var(--ink);
  color: var(--canvas);
}

.feature-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  border-top: 1px solid var(--line);
}

.feature-image {
  height: 620px;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  transform: translateY(28px) rotate(-1deg);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.feature-grid article,
.report-card {
  padding: 18px;
}

.feature-grid article:nth-child(2),
.feature-grid article:nth-child(3) {
  transform: translateY(22px);
}

.report-section {
  border-top: 1px solid var(--line);
}

.report-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 14px;
  align-items: stretch;
}

.report-card:nth-child(3) {
  grid-column: 2;
  margin-left: 18%;
  background: #fbfcff;
}

.report-card ol {
  margin-bottom: 0;
  padding-left: 22px;
}

.primary-link.full {
  width: 100%;
  margin-top: 10px;
}

.site-footer {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  align-items: end;
  border-top: 1px solid var(--line-strong);
}

.footer-image {
  height: 180px;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.reveal-up,
.reveal-right,
.reveal-left {
  animation-duration: 720ms;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-fill-mode: both;
}

.reveal-up {
  animation-name: revealUp;
}

.reveal-right {
  animation-name: revealRight;
}

.reveal-left {
  animation-name: revealLeft;
}

.reveal-up:nth-child(2),
.report-card:nth-child(2),
.feature-grid article:nth-child(2) {
  animation-delay: 90ms;
}

.reveal-up:nth-child(3),
.report-card:nth-child(3),
.feature-grid article:nth-child(3) {
  animation-delay: 180ms;
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes revealRight {
  from {
    opacity: 0;
    transform: translateX(34px) rotate(1.5deg);
  }
  to {
    opacity: 1;
    transform: translateX(0) rotate(1.5deg);
  }
}

@keyframes revealLeft {
  from {
    opacity: 0;
    transform: translateX(-34px) translateY(28px) rotate(-1deg);
  }
  to {
    opacity: 1;
    transform: translateX(0) translateY(28px) rotate(-1deg);
  }
}

@keyframes scan {
  from {
    transform: translateX(-15%);
  }
  to {
    transform: translateX(230%);
  }
}

@media (max-width: 980px) {
  .hero-section,
  .workbench,
  .feature-section,
  .report-layout,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-top: 24px;
  }

  .hero-visual,
  .result-panel,
  .feature-image,
  .report-card:nth-child(3) {
    margin-top: 0;
    margin-left: 0;
  }

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

  .feature-image {
    height: 360px;
  }

  .report-card:nth-child(3) {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-actions,
  .hero-actions,
  .button-row,
  .input-meter {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .nav-link,
  .nav-cta,
  .primary-link,
  .ghost-button,
  .button {
    width: 100%;
  }

  .trust-strip,
  .feature-grid,
  .risk-summary {
    grid-template-columns: 1fr;
  }

  .trust-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .trust-strip div:last-child {
    border-bottom: 0;
  }

  textarea {
    min-height: 260px;
  }

  .input-panel,
  .result-panel,
  .report-card,
  .feature-grid article {
    padding: 16px;
  }

  .feature-grid article:nth-child(2),
  .feature-grid article:nth-child(3) {
    transform: none;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}