/* 도구 본위 (Reading B). 코덱스 권고 반영:
 * - 매거진 헤더/푸터 제거, 도구형 chrome
 * - Pretendard 중심, Fraunces는 출처 표기만, JetBrains Mono는 상태값/점수/메타
 * - lime 단일 액션 컬러, pink/blue는 작은 흔적만 (a11y 점수 / 강조)
 * - 첫 화면 = 즉시 분석 행동, 매거진 hero 패턴 없음
 * - 기능 모션만 (호버/포커스), 장식 모션 없음 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--carbon);
  color: var(--bright);
  font-family: var(--font-body); /* Pretendard 중심 */
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

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

/* 스크린 리더 전용 (시각적으로 숨김) — skip-link 기본 상태 + 본문 라벨 */
.visually-hidden,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
/* skip-link은 포커스 시 화면에 나타나야 함 (접근성) */
.skip-link:focus {
  position: fixed;
  top: 12px;
  left: 12px;
  width: auto;
  height: auto;
  padding: 8px 14px;
  background: var(--lime);
  color: var(--carbon);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  border-radius: 6px;
  clip: auto;
  z-index: 100;
}

/* ---------- 도구 본위 헤더 ---------- */
.tool-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  border-bottom: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
}

/* Bilingual stamp lockup — 한글 Pretendard 700 + 영문 mono caps.
   매거진 판권면 톤 한 스푼. (Thread 07) */
.product-mark {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}
.product-name {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  color: var(--bright);
  letter-spacing: -0.005em;
}
.product-caret {
  font-family: var(--font-mono);
  font-size: 12px;
  color: color-mix(in oklab, var(--chrome) 70%, transparent);
  transform: translateY(-1px);
}
.product-codename {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--chrome);
  text-transform: uppercase;
}
.product-mark:hover .product-codename {
  color: var(--lime);
}
@media (max-width: 480px) {
  .product-codename,
  .product-caret {
    display: none;
  }
}
.product-version {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--chrome);
}
.tool-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.tool-nav > a:not(.origin-tag) {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--chrome);
  border-bottom: 1px solid transparent;
  transition:
    color 0.15s,
    border-color 0.15s;
}
.tool-nav > a:not(.origin-tag):hover {
  color: var(--lime);
  border-color: currentColor;
}
.origin-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chrome);
  padding: 6px 10px;
  border: 1px solid color-mix(in oklab, var(--chrome) 18%, transparent);
  border-radius: 999px;
  transition: color 0.15s;
}
.origin-tag:hover {
  color: var(--lime);
  border-color: color-mix(in oklab, var(--lime) 40%, transparent);
}

/* ---------- HERO ---------- */
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 28px;
}

.hero {
  padding: 64px 0 48px;
}
.hero-h1 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  color: var(--bright);
  max-width: 18ch;
}
.hero-lead {
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.7;
  color: color-mix(in oklab, var(--bright) 88%, var(--chrome));
  margin: 0 0 28px;
  max-width: 600px;
}
.section-lead {
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--chrome);
  margin: 0 0 20px;
  max-width: 600px;
}
.install-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

/* lime 단일 액션 컬러 */
.cta-primary,
.cta-secondary {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 18px;
  border-radius: 8px;
  transition:
    transform 0.12s ease,
    background 0.12s ease;
}
.cta-primary {
  background: var(--lime);
  color: var(--carbon);
}
.cta-primary:hover {
  transform: translateY(-1px);
}
.cta-secondary {
  background: transparent;
  color: var(--bright);
  border: 1px solid color-mix(in oklab, var(--chrome) 28%, transparent);
}
.cta-secondary:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--chrome);
  margin: 0;
  letter-spacing: 0.04em;
}

/* ---------- 결과 미리보기 (도구 정체성 즉시 전달) ---------- */
.preview {
  padding: 0 0 64px;
}
.preview-frame {
  background: var(--patent);
  border: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
  border-radius: 12px;
  overflow: hidden;
}
.preview-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: color-mix(in oklab, var(--bright) 4%, var(--carbon));
  border-bottom: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
}
.preview-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--chrome) 30%, transparent);
}
.preview-url {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--chrome);
  margin-left: 8px;
}
.preview-body {
  padding: 22px;
}
.preview-score-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}
.score-cell {
  background: color-mix(in oklab, var(--bright) 3%, var(--patent));
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: default;
}
/* 시그너처 모션: 점수 hover 시 RGB chromatic aberration 220ms (Thread 07).
   "점수는 르이다" — 도구 정체성 순간. prefers-reduced-motion 존중. */
.score-cell:hover .score-value,
.score-cell:focus-visible .score-value {
  animation: zz-score-glitch 220ms steps(2, end) 1;
}
@keyframes zz-score-glitch {
  0% {
    text-shadow: none;
    transform: translate(0, 0);
  }
  25% {
    text-shadow:
      1px 0 var(--pink),
      -1px 0 var(--blue);
    transform: translate(0.5px, 0);
  }
  55% {
    text-shadow:
      -1px 0 var(--pink),
      1px 0 var(--blue);
    transform: translate(-0.5px, 0);
  }
  100% {
    text-shadow: none;
    transform: translate(0, 0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .score-cell:hover .score-value,
  .score-cell:focus-visible .score-value {
    animation: none;
  }
}
.score-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--chrome);
}
.score-label.accent {
  color: var(--lime);
}
.score-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  color: var(--bright);
}
.preview-issues {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.issue-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: color-mix(in oklab, var(--bright) 2%, var(--patent));
  border-radius: 8px;
  font-size: 13px;
  border-left: 3px solid transparent;
}
.issue-row.crit {
  border-left-color: var(--pink);
}
.issue-row.warn {
  border-left-color: var(--yellow);
}
.issue-row.info {
  border-left-color: var(--blue);
}
.issue-tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--chrome);
  min-width: 64px;
}
.issue-row.crit .issue-tag {
  color: var(--pink);
}
.issue-row.warn .issue-tag {
  color: var(--yellow);
}
.issue-row.info .issue-tag {
  color: var(--blue);
}
.issue-text {
  color: var(--bright);
}
.preview-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--chrome);
  margin: 14px 0 0;
  letter-spacing: 0.02em;
}

/* ---------- Section ---------- */
.section {
  padding: 56px 0;
  border-top: 1px solid color-mix(in oklab, var(--chrome) 10%, transparent);
}
.section-h2 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 24px);
  letter-spacing: -0.01em;
  margin: 0 0 24px;
  color: var(--bright);
}
.section-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--chrome);
  margin: 18px 0 0;
}

/* ---------- 카테고리 그리드 ---------- */
.cat-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
  border-left: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
}
.cat-grid li {
  display: grid;
  grid-template-columns: 28px 90px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px 18px;
  border-right: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
  font-size: 13px;
}
.cat-id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lime);
}
.cat-name {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--bright);
}
.cat-detail {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--chrome);
}

@media (max-width: 600px) {
  .cat-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 스텝 ---------- */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
}
.steps li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
}
.step-n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lime);
}
.step-text {
  font-size: 14px;
  color: var(--bright);
}

/* ---------- 설치 카드 ---------- */
.install-card {
  background: var(--patent);
  border: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}
.install-card--secondary {
  background: color-mix(in oklab, var(--bright) 2%, var(--patent));
}
.install-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.install-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--lime);
}
.install-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--chrome);
  padding: 4px 9px;
  border: 1px solid color-mix(in oklab, var(--chrome) 18%, transparent);
  border-radius: 999px;
}
.install-desc {
  font-size: 14px;
  color: var(--bright);
  margin: 0;
  line-height: 1.6;
}
.install-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13.5px;
  color: var(--chrome);
  line-height: 1.55;
}
.install-bullets li {
  position: relative;
  padding-left: 18px;
}
.install-bullets li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--lime);
  font-weight: 700;
}
.install-bullets strong {
  color: var(--bright);
  font-weight: 600;
}
.install-btn {
  align-self: flex-start;
}
.install-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--chrome);
  margin-top: 4px;
}

/* ---------- 북마클릿 친절 가이드 ---------- */
.bookmarklet-what {
  background: color-mix(in oklab, var(--bright) 3%, transparent);
  border-left: 2px solid var(--lime);
  padding: 12px 16px;
  border-radius: 0 6px 6px 0;
  font-size: 13.5px;
}
.bookmarklet-what summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--bright);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.bookmarklet-what summary::before {
  content: '?';
  display: inline-flex;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--carbon);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
}
.bookmarklet-what summary::-webkit-details-marker {
  display: none;
}
.bookmarklet-what[open] summary {
  margin-bottom: 8px;
}
.bookmarklet-what p {
  margin: 0;
  color: var(--chrome);
  line-height: 1.65;
}

/* 3-step bookmarklet install */
.bm-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.bm-steps li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  align-items: start;
}
.bm-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--carbon);
  background: var(--lime);
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}
.bm-head {
  font-weight: 600;
  font-size: 14.5px;
  color: var(--bright);
  margin-bottom: 4px;
}
.bm-desc {
  font-size: 13px;
  color: var(--chrome);
  line-height: 1.65;
}
.bm-desc strong {
  color: var(--bright);
}
.bm-desc em {
  font-style: normal;
  color: var(--bright);
  background: color-mix(in oklab, var(--bright) 8%, transparent);
  padding: 1px 6px;
  border-radius: 4px;
}
kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  margin: 0 1px;
  background: color-mix(in oklab, var(--bright) 8%, transparent);
  border: 1px solid color-mix(in oklab, var(--chrome) 22%, transparent);
  border-radius: 4px;
  color: var(--bright);
}

/* 강조 드래그 버튼 — 시각적으로 "끌어라" 인지 */
.bm-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 12px 18px;
  background: var(--lime);
  color: var(--carbon);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  border-radius: 8px;
  cursor: grab;
  user-select: none;
  box-shadow: 0 4px 0 0 color-mix(in oklab, var(--lime) 60%, var(--carbon));
  transition:
    transform 0.1s ease,
    box-shadow 0.1s ease;
}
.bm-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 0 0 color-mix(in oklab, var(--lime) 60%, var(--carbon));
}
.bm-button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 0 color-mix(in oklab, var(--lime) 60%, var(--carbon));
  cursor: grabbing;
}
.bm-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--chrome);
  margin-top: 8px;
  letter-spacing: 0.02em;
}

/* ---------- 매거진 링크 (작게, 끝 직전) ---------- */
.magazine-link {
  padding: 36px 0 28px;
}
.magazine-link p {
  margin: 0;
  font-size: 13.5px;
  color: var(--chrome);
}
.link-lime {
  color: var(--lime);
  border-bottom: 1px solid currentColor;
}

/* ---------- 도구형 푸터 ---------- */
.tool-footer {
  border-top: 1px solid color-mix(in oklab, var(--chrome) 14%, transparent);
  padding: 36px 28px 24px;
  max-width: 720px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}
.footer-grid.footer-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--chrome);
  text-transform: uppercase;
}
/* 매거진 판권면 톤 한 스푼 (Thread 07) — 영문 라벨 옆 한국어 서비스 라벨 */
.footer-label-ko {
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  color: var(--bright);
  margin-right: 2px;
}
.footer-value {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--bright);
}
a.footer-value {
  border-bottom: 1px solid color-mix(in oklab, var(--chrome) 28%, transparent);
}
a.footer-value:hover {
  border-color: var(--lime);
  color: var(--lime);
}
.footer-bottom {
  text-align: left;
  padding-top: 18px;
  border-top: 1px dashed color-mix(in oklab, var(--chrome) 18%, transparent);
}
/* 매거진 판권면 톤 (Thread 07) — Fraunces 존재감 ↑, 2-line 콜로폰 */
.colophon-line {
  margin: 0 0 6px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.colophon-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--bright);
  letter-spacing: 0.01em;
}
.colophon-mark:hover {
  color: var(--lime);
}
.colophon-sep {
  font-family: var(--font-mono);
  font-size: 12px;
  color: color-mix(in oklab, var(--chrome) 60%, transparent);
}
.colophon-issue {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--chrome);
  text-transform: uppercase;
}
.colophon-meta {
  margin: 0;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.7;
  color: var(--chrome);
}
.colophon-meta a {
  color: var(--bright);
  border-bottom: 1px solid color-mix(in oklab, var(--chrome) 30%, transparent);
}
.colophon-meta a:hover {
  color: var(--lime);
  border-color: currentColor;
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}