/* ============================================================
   coForward Manual 공통 스타일
   기준: S02_installkit-user-manual_v1.0.html
   ============================================================ */

/* ── CSS 변수 ── */
:root {
  --color-brand-primary: #0850A0;
  --color-brand-secondary: #0099D8;
  --color-brand-accent: #00A886;

  --color-primary-50: #EAF4FB;
  --color-primary-100: #D5E8F6;
  --color-primary-200: #A9D0EC;
  --color-primary-300: #7DB8E2;
  --color-primary-400: #4F97CF;
  --color-primary-500: #0850A0;
  --color-primary-600: #07478F;
  --color-primary-700: #063D7B;
  --color-primary-800: #042F5F;
  --color-primary-900: #021E3D;

  --color-secondary-100: #E6F8FD;
  --color-secondary-500: #0099D8;
  --color-secondary-700: #006F9E;

  --color-accent-100: #E5F8F4;
  --color-accent-500: #00A886;
  --color-accent-700: #00735B;

  --color-gray-100: #F8F9FA;
  --color-gray-200: #F1F3F5;
  --color-gray-300: #E9ECEF;
  --color-gray-400: #DEE2E6;
  --color-gray-500: #CED4DA;
  --color-gray-600: #ADB5BD;
  --color-gray-700: #6C757D;
  --color-gray-800: #495057;
  --color-gray-900: #212529;

  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-800);
  --color-text-tertiary: var(--color-gray-700);
  --color-text-disabled: var(--color-gray-600);
  --color-text-inverse: #FFFFFF;
  --color-text-link: var(--color-primary-500);

  --color-background-page: #FFFFFF;
  --color-background-surface: var(--color-gray-100);
  --color-background-subtle: var(--color-gray-200);
  --color-background-brand-subtle: var(--color-primary-50);
  --color-background-selected: var(--color-primary-100);
  --color-background-inverse: var(--color-gray-900);

  --color-border-default: var(--color-gray-400);
  --color-border-subtle: var(--color-gray-300);
  --color-border-strong: var(--color-gray-600);
  --color-border-focus: var(--color-primary-500);
  --color-border-selected: var(--color-secondary-500);

  --color-status-success: #16A34A;
  --color-status-success-bg: #E9F7EE;
  --color-status-warning: #F59E0B;
  --color-status-warning-bg: #FFF3D7;
  --color-status-error: #DC2626;
  --color-status-error-bg: #FDE8E8;
  --color-status-info: #2563EB;
  --color-status-info-bg: #E8F0FE;

  --shadow-1: 0 1px 2px rgba(0,0,0,.08);
  --shadow-2: 0 4px 12px rgba(0,0,0,.12);
  --shadow-3: 0 8px 24px rgba(0,0,0,.16);

  --sidebar-width: 264px;
  --header-height: 68px;
}

/* ── 리셋 / 기본 ── */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text-primary);
  background: var(--color-background-surface);
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
}
a { color: var(--color-text-link); }

/* ── 헤더 ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 32px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(12px);
}
header h1 {
  margin: 0;
  font-size: 20px;
  line-height: 28px;
  font-weight: 700;
  letter-spacing: -.02em;
  white-space: nowrap;
}
header h1 em { font-style: normal; color: var(--color-brand-primary); }
header nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}
header nav a {
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 18px;
  font-weight: 500;
  text-decoration: none;
}
header nav a:hover,
header nav a:focus-visible {
  color: var(--color-brand-primary);
  background: var(--color-background-brand-subtle);
  outline: none;
}

/* ── 레이아웃 ── */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px;
}

/* ── 사이드바 ── */
aside {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  align-self: start;
  max-height: calc(100vh - var(--header-height) - 48px);
  overflow: auto;
  padding: 16px;
  background: var(--color-background-page);
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  box-shadow: var(--shadow-1);
  scrollbar-width: thin;
}
.sidebar-section { margin-bottom: 24px; }
.sidebar-section:last-child { margin-bottom: 0; }
.sidebar-section-title {
  margin: 0 8px 8px;
  color: var(--color-text-tertiary);
  font-size: 12px;
  line-height: 16px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
aside a {
  display: block;
  margin: 2px 0;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 20px;
  text-decoration: none;
  transition: background .15s ease, color .15s ease;
}
aside a:hover,
aside a:focus-visible {
  color: var(--color-brand-primary);
  background: var(--color-background-brand-subtle);
  outline: none;
}
aside a.active {
  color: var(--color-brand-primary);
  background: var(--color-background-selected);
  font-weight: 700;
}

/* ── 메인 / 섹션 ── */
main { min-width: 0; }
section {
  margin-bottom: 24px;
  padding: 36px;
  background: var(--color-background-page);
  border: 1px solid var(--color-border-subtle);
  border-radius: 18px;
  box-shadow: var(--shadow-1);
}

/* ── Overview ── */
#overview {
  position: relative;
  overflow: hidden;
  padding: 48px;
  color: var(--color-text-inverse);
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-primary-800));
  border: 0;
  box-shadow: var(--shadow-3);
}
#overview::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,153,216,.5), rgba(0,168,134,0));
  pointer-events: none;
}
#overview .section-header,
#overview > p,
#overview .callout,
#overview .feature-grid { position: relative; z-index: 1; }
#overview .section-header {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}
#overview .section-header::before {
  /* content: 각 파일에서 개별 지정 */
  display: block;
  margin-bottom: 10px;
  color: rgba(255,255,255,.72);
  font-size: 13px;
  line-height: 20px;
  font-weight: 700;
  letter-spacing: .08em;
}
#overview h1 { color: #fff; font-size: 42px; line-height: 52px; font-weight: 700; }
#overview .lead {
  max-width: 760px;
  color: rgba(255,255,255,.84);
  font-size: 18px;
  line-height: 28px;
  font-weight: 500;
}
#overview > p { max-width: 920px; color: rgba(255,255,255,.88); }
#overview .callout-info {
  color: #fff;
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.35);
}
#overview .feature-card {
  color: var(--color-text-primary);
  background: rgba(255,255,255,.96);
  border-color: rgba(255,255,255,.55);
  box-shadow: var(--shadow-1);
}

/* ── 타이포그래피 ── */
.section-header {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border-subtle);
}
h1, h2, h3, h4 { color: var(--color-text-primary); letter-spacing: -.02em; }
h1 { margin: 0 0 10px; font-size: 32px; line-height: 40px; font-weight: 700; }
h2 { margin: 34px 0 14px; font-size: 24px; line-height: 32px; font-weight: 600; }
section > h2:first-child { margin-top: 0; }
h3 { margin: 28px 0 12px; font-size: 20px; line-height: 28px; font-weight: 600; }
h4 { margin: 0 0 6px; font-size: 16px; line-height: 24px; font-weight: 600; }
p { margin: 0 0 14px; }
.lead { color: var(--color-text-secondary); font-size: 18px; line-height: 28px; }

/* ── Feature Grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 14px;
  margin-top: 28px;
}
.feature-card {
  min-height: 154px;
  padding: 20px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  background: var(--color-background-page);
}
.feature-icon { margin-bottom: 12px; font-size: 24px; line-height: 1; }
.feature-card p { margin: 0; color: var(--color-text-tertiary); font-size: 14px; line-height: 22px; }

/* ── Steps ── */
.steps { display: grid; gap: 12px; margin: 18px 0; }
.step {
  display: grid;
  grid-template-columns: 40px minmax(0,1fr);
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 14px;
  background: var(--color-background-page);
}
.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #fff;
  background: var(--color-brand-primary);
  font-size: 14px;
  line-height: 20px;
  font-weight: 700;
}
.step-body p { margin: 0; color: var(--color-text-tertiary); font-size: 14px; line-height: 22px; }

/* ── 테이블 ── */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--color-border-subtle);
  border-radius: 14px;
  background: var(--color-background-page);
}
table { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 22px; }
th, td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--color-border-subtle);
  text-align: left;
  vertical-align: top;
}
th { color: var(--color-text-secondary); background: var(--color-background-surface); font-weight: 700; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--color-background-brand-subtle); }

/* ── 코드 ── */
code {
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--color-primary-700);
  background: var(--color-background-subtle);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}
pre {
  position: relative;
  overflow-x: auto;
  margin: 16px 0;
  padding: 20px;
  border: 1px solid var(--color-gray-800);
  border-radius: 14px;
  color: #E9ECEF;
  background: var(--color-background-inverse);
  box-shadow: var(--shadow-1);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
}
pre code { padding: 0; color: inherit; background: transparent; }

/* ── Callout ── */
.callout {
  margin: 18px 0;
  padding: 15px 18px;
  border: 1px solid;
  border-left-width: 4px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 22px;
}
.callout-info { color: #174EA6; background: var(--color-status-info-bg); border-color: var(--color-status-info); }
.callout-warn { color: #8A5600; background: var(--color-status-warning-bg); border-color: var(--color-status-warning); }
.callout-tip { color: #0F6B32; background: var(--color-status-success-bg); border-color: var(--color-status-success); }

ul, ol { margin: 14px 0; padding-left: 22px; }
li { margin: 6px 0; }

/* ── 푸터 ── */
footer {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px 40px calc(var(--sidebar-width) + 64px);
  color: var(--color-text-tertiary);
  font-size: 13px;
  line-height: 20px;
}

/* ── 기본 반응형 ── */
@media (max-width: 1080px) {
  header nav { display: none; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 900px) {
  :root { --header-height: 60px; }
  header { padding: 0 20px; }
  .layout { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
  aside { position: static; max-height: none; }
  section { padding: 28px 24px; }
  #overview { padding: 36px 28px; }
  #overview h1 { font-size: 34px; line-height: 42px; }
  footer { padding: 0 20px 32px; }
}
@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; }
  .step { grid-template-columns: 36px minmax(0,1fr); }
  section { border-radius: 14px; }
  #overview { padding: 30px 22px; }
  #overview h1 { font-size: 30px; line-height: 38px; }
  h1 { font-size: 28px; line-height: 36px; }
  h2 { font-size: 22px; line-height: 30px; }
}

/* ── 마크다운 변환 공통 ── */
.meta-list { display: grid; gap: 6px; margin: 18px 0; }
.meta-list p { margin: 0; }
#overview .meta-list { color: rgba(255,255,255,.88); }
#overview code { color: #fff; background: rgba(255,255,255,.14); }
#overview strong { color: #fff; }
#contents ol { margin: 0; padding-left: 24px; }
#contents li { margin: 8px 0; }
#contents a { text-decoration: none; }
#contents a:hover, #contents a:focus-visible { text-decoration: underline; }
blockquote { margin: 18px 0; }
hr { border: 0; border-top: 1px solid var(--color-border-subtle); margin: 28px 0; }
main section > :last-child { margin-bottom: 0; }

/* ── 인터랙티브 데모 ── */
.demo-panel {
  margin: 24px 0 8px;
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  background: var(--color-background-page);
  box-shadow: var(--shadow-1);
}
.demo-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-background-surface);
}
.demo-panel-header h3 { margin: 0; }
.demo-badge {
  flex: 0 0 auto;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--color-accent-700);
  background: var(--color-accent-100);
  font-size: 12px;
  line-height: 18px;
  font-weight: 700;
}
.demo-body { padding: 22px; }
.demo-description { margin-bottom: 18px; color: var(--color-text-tertiary); font-size: 14px; }
.demo-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px;
  margin-top: 18px;
}
.demo-control-group { display: grid; gap: 6px; }
.demo-control-group label { color: var(--color-text-secondary); font-size: 13px; font-weight: 700; }
.demo-button,
.demo-select,
.demo-input {
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--color-border-default);
  border-radius: 9px;
  color: var(--color-text-primary);
  background: var(--color-background-page);
  font: inherit;
  font-size: 14px;
}
.demo-button { cursor: pointer; font-weight: 700; }
.demo-button:hover,
.demo-button:focus-visible { border-color: var(--color-brand-primary); outline: none; }
.demo-button-primary { color: #fff; background: var(--color-brand-primary); border-color: var(--color-brand-primary); }
.demo-button-primary:hover,
.demo-button-primary:focus-visible { background: var(--color-primary-600); }
.demo-status { margin-left: auto; color: var(--color-text-tertiary); font-size: 13px; }
.demo-status strong { color: var(--color-brand-primary); }
@media (max-width: 640px) {
  .demo-panel-header { align-items: flex-start; }
  .demo-body { padding: 18px; }
  .demo-status { width: 100%; margin-left: 0; }
}

/* ── 슬라이더 데모 ── */
.slider-demo-viewport {
  position: relative;
  width: 100%;
  height: 118px;
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary-50), #fff);
}
.slider-demo-track {
  position: absolute;
  inset: 0 auto auto 0;
  display: flex;
  width: max-content;
  height: 100%;
  will-change: transform;
}
.slider-demo-track.is-vertical { flex-direction: column; width: 100%; height: max-content; }
.slider-demo-list {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
  height: 100%;
  margin: 0;
  padding: 16px 6px;
  list-style: none;
}
.slider-demo-track.is-vertical .slider-demo-list {
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  min-width: 0;
  height: auto;
  padding: 6px 16px;
}
.slider-demo-item {
  min-width: 240px;
  padding: 14px 16px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow-1);
}
.slider-demo-track.is-vertical .slider-demo-item { min-width: 0; }
.slider-demo-item strong { display: block; color: var(--color-brand-primary); }
.slider-demo-item span { color: var(--color-text-tertiary); font-size: 13px; }

/* ── 캘린더 데모 ── */
.calendar-demo-layout { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(240px, .6fr); gap: 18px; }
.calendar-demo-card { border: 1px solid var(--color-border-subtle); border-radius: 16px; overflow: hidden; background: #fff; }
.calendar-demo-head { display: grid; grid-template-columns: 42px 1fr 42px; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--color-border-subtle); text-align: center; }
.calendar-nav { width: 34px; height: 34px; border: 1px solid var(--color-border-default); border-radius: 8px; background: #fff; cursor: pointer; font-size: 22px; }
.calendar-weekdays,
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); }
.calendar-weekdays div { padding: 10px 4px; text-align: center; background: var(--color-background-surface); font-size: 12px; font-weight: 700; color: var(--color-text-tertiary); }
.calendar-day { min-height: 76px; padding: 8px; border: 0; border-right: 1px solid var(--color-border-subtle); border-bottom: 1px solid var(--color-border-subtle); background: #fff; text-align: left; cursor: pointer; }
.calendar-day:nth-child(7n) { border-right: 0; }
.calendar-day:hover:not(:disabled) { background: var(--color-background-brand-subtle); }
.calendar-day.is-overflow { color: var(--color-text-disabled); background: var(--color-background-surface); }
.calendar-day.is-selected { color: #fff; background: var(--color-brand-primary); }
.calendar-day:disabled { color: var(--color-text-disabled); background: var(--color-background-subtle); cursor: not-allowed; }
.calendar-day-number { font-weight: 700; }
.calendar-content-badge { display: inline-block; margin-top: 8px; padding: 2px 6px; border-radius: 999px; background: var(--color-accent-100); color: var(--color-accent-700); font-size: 11px; font-weight: 700; }
.calendar-day.is-selected .calendar-content-badge { background: rgba(255,255,255,.2); color: #fff; }
.calendar-demo-result { padding: 18px; border: 1px solid var(--color-border-subtle); border-radius: 16px; background: var(--color-background-surface); }
.calendar-demo-result label { display: block; margin-bottom: 6px; font-weight: 700; }
.calendar-demo-result p { font-size: 13px; color: var(--color-text-tertiary); }
.demo-message { margin-top: 12px; padding: 12px; border-radius: 10px; background: #fff; border: 1px solid var(--color-border-subtle); font-size: 13px; }
.demo-panel-header p { margin: 4px 0 0; color: var(--color-text-tertiary); font-size: 13px; }
@media (max-width: 760px) {
  .calendar-demo-layout { grid-template-columns: 1fr; }
  .calendar-day { min-height: 58px; padding: 6px; }
}

/* ── 브랜드 / 탑바 ── */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--color-brand-secondary), var(--color-brand-accent));
  font-size: 13px;
  font-weight: 800;
}
.brand-title {
  color: var(--color-text-primary);
  font-size: 18px;
  line-height: 26px;
  font-weight: 700;
  white-space: nowrap;
}
.topbar-nav {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}
.topbar-meta {
  color: var(--color-text-tertiary);
  font-size: 12px;
  line-height: 18px;
  white-space: nowrap;
}

/* ── Document Intro ── */
.document-intro {
  position: relative;
  overflow: hidden;
  padding: 48px;
  color: var(--color-text-inverse);
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-primary-800));
  border: 0;
  box-shadow: var(--shadow-3);
}
.document-intro::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,153,216,.5), rgba(0,168,134,0));
  pointer-events: none;
}
.document-intro > * { position: relative; z-index: 1; }
.document-intro .section-header {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}
.document-intro .section-header::before {
  /* content: 각 파일에서 개별 지정 */
  display: block;
  margin-bottom: 10px;
  color: rgba(255,255,255,.72);
  font-size: 13px;
  line-height: 20px;
  font-weight: 700;
  letter-spacing: .08em;
}
.document-intro h1 { color: #fff; font-size: 42px; line-height: 52px; font-weight: 700; }
.document-intro .lead,
.document-intro p { max-width: 920px; color: rgba(255,255,255,.86); }
.document-intro .feature-card {
  color: var(--color-text-primary);
  background: rgba(255,255,255,.96);
  border-color: rgba(255,255,255,.55);
}

/* ── 콘텐츠 그리드 / 카드 / 플로우 / 시나리오 / 배지 ── */
.content-grid,
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card {
  min-height: 140px;
  padding: 20px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  background: var(--color-background-page);
  box-shadow: var(--shadow-1);
}
.card h3 { margin: 0 0 8px; font-size: 18px; line-height: 26px; font-weight: 600; }
.card p { margin: 0; color: var(--color-text-tertiary); font-size: 14px; line-height: 22px; }
.card .icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  border-radius: 12px;
  color: var(--color-primary-700);
  background: var(--color-background-brand-subtle);
  font-size: 13px;
  line-height: 1;
  font-weight: 800;
}
.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 18px 0;
}
.flow-item {
  padding: 11px 14px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  background: var(--color-background-surface);
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 20px;
  font-weight: 700;
}
.flow-arrow { color: var(--color-text-tertiary); font-weight: 700; }
.scenario {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  margin: 18px 0;
  padding: 20px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  background: var(--color-background-page);
}
.scenario-label {
  color: var(--color-primary-700);
  font-size: 13px;
  line-height: 20px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.scenario h3 { margin-top: 0; }
.feature-strip {
  margin: 18px 0;
  padding: 24px;
  border-radius: 16px;
  color: #fff;
  background:
    radial-gradient(circle at 90% 15%, rgba(0,168,134,.3), transparent 30%),
    linear-gradient(135deg, var(--color-primary-700), var(--color-primary-900));
  box-shadow: var(--shadow-2);
}
.feature-strip h3 { margin: 0 0 8px; color: #fff; }
.feature-strip p { margin: 0; color: rgba(255,255,255,.84); }
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}
.badge.success { color: #0F6B32; background: var(--color-status-success-bg); }
.badge.warning { color: #8A5600; background: var(--color-status-warning-bg); }
.badge.error { color: #9A1C1C; background: var(--color-status-error-bg); }
.badge.info { color: #174EA6; background: var(--color-status-info-bg); }
.checklist { padding-left: 22px; color: var(--color-text-secondary); }

/* ── 확장 반응형 ── */
@media (max-width: 1180px) { .topbar-meta { display: none; } }
@media (max-width: 1080px) { .grid.three { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 900px) { .scenario { grid-template-columns: 1fr; } }
@media (max-width: 640px) {
  .grid, .grid.three { grid-template-columns: 1fr; }
  .document-intro { padding: 30px 22px; }
  .document-intro h1 { font-size: 30px; line-height: 38px; }
}

/* ============================================================
   페이지별 고유 스타일 (body 클래스로 스코핑)
   ============================================================ */

/* ── S02: InstallKit ── */
.page-s02 #overview .section-header::before { content: "INSTALLKIT · USER GUIDE"; }

/* ── S01: Project Manager ── */
.page-s01 #overview .section-header::before { content: "INSTALLKIT · USER GUIDE"; }
.page-s01 .document-intro .section-header::before { content: "PROJECT MANAGER · USER GUIDE"; }

/* ── index ── */
.page-index #overview .section-header::before { content: "INSTALLKIT · USER GUIDE"; }
.page-index .document-intro .section-header::before { content: "PROJECT MANAGER · USER GUIDE"; }

/* ── L01: Grid ── */
.page-l01 #overview .section-header::before { content: "COFORWARD SLIDER · USER GUIDE"; }
/* Grid live demo */
.grid-demo-controls{grid-template-columns:repeat(5,minmax(0,auto));align-items:end}
.grid-demo-toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-top:18px;padding:14px 16px;border:1px solid var(--color-border-subtle);border-bottom:0;border-radius:14px 14px 0 0;background:var(--color-background-surface)}
.grid-demo-toolbar span{color:var(--color-text-tertiary);font-size:13px}
.grid-demo-wrap{overflow:auto;border:1px solid var(--color-border-subtle);background:#fff}
.grid-demo-table{min-width:720px}
.grid-demo-table th{white-space:nowrap;user-select:none}
.grid-demo-sort{display:inline-flex;align-items:center;gap:6px;padding:0;border:0;background:transparent;color:inherit;font:inherit;font-weight:700;cursor:pointer}
.grid-demo-sort::after{content:'↕';color:var(--color-text-disabled);font-size:12px}
.grid-demo-sort.is-asc::after{content:'↑';color:var(--color-brand-primary)}
.grid-demo-sort.is-desc::after{content:'↓';color:var(--color-brand-primary)}
.grid-demo-table td:first-child,.grid-demo-table th:first-child{width:52px;text-align:center}
.grid-demo-table tbody tr.is-checked td{background:var(--color-background-selected)}
.grid-demo-table tbody tr.is-updated td[data-key="name"]{background:var(--color-status-warning-bg);font-weight:700}
.grid-demo-footer{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;margin-top:14px}
.grid-demo-pagination{display:flex;gap:6px;flex-wrap:wrap}
.grid-demo-page{min-width:34px;height:34px;border:1px solid var(--color-border-default);border-radius:8px;background:#fff;cursor:pointer}
.grid-demo-page.is-active{color:#fff;background:var(--color-brand-primary);border-color:var(--color-brand-primary)}
.grid-demo-footer .demo-message{flex:1;max-width:520px;margin-top:0}
.grid-demo-empty{text-align:center;color:var(--color-text-tertiary);padding:28px!important}
@media (max-width: 900px) {
  .grid-demo-controls{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-demo-footer{display:block}
  .grid-demo-footer .demo-message{max-width:none;margin-top:12px}
}
@media (max-width: 560px) {
  .grid-demo-controls{grid-template-columns:1fr}
  .grid-demo-toolbar{align-items:flex-start;flex-direction:column}
}

/* ── L02: DateUtils ── */
.page-l02 #overview .section-header::before { content: "COFORWARD DATEUTILS · USER GUIDE"; }
/* DateUtils live demo */
.date-demo-toolbar { display: flex; flex-wrap: wrap; align-items: end; gap: 10px; margin-bottom: 18px; }
.date-demo-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.date-demo-card { min-height: 116px; padding: 18px; border: 1px solid var(--color-border-subtle); border-radius: 14px; background: linear-gradient(145deg, #fff, var(--color-background-surface)); }
.date-demo-card dt { margin-bottom: 8px; color: var(--color-text-tertiary); font-size: 13px; font-weight: 700; }
.date-demo-card dd { margin: 0; color: var(--color-brand-primary); font-size: 20px; line-height: 28px; font-weight: 700; word-break: break-all; }
.date-demo-card small { display: block; margin-top: 5px; color: var(--color-text-tertiary); font-size: 12px; }
@media (max-width: 1080px) { .date-demo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .date-demo-grid { grid-template-columns: 1fr; } }

/* ── L03: Calendar ── */
.page-l03 #overview .section-header::before { content: "COFORWARD CALENDAR · USER GUIDE"; }

/* ── L04: Popup ── */
.page-l04 #overview .section-header::before { content: "COFORWARD POPUP · USER GUIDE"; }
/* Popup 데모 오버라이드 */
.page-l04 .demo-panel { margin-top: 24px; padding: 24px; border: 1px solid var(--color-border-subtle); border-radius: 16px; background: var(--color-background-surface); overflow: visible; box-shadow: none; }
.demo-toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.page-l04 .demo-button { border: 0; border-radius: 10px; padding: 10px 16px; font: inherit; font-weight: 700; cursor: pointer; background: var(--color-brand-primary); color: #fff; min-height: auto; }
.page-l04 .demo-button.secondary { background: var(--color-background-page); color: var(--color-text-primary); border: 1px solid var(--color-border-default); }
.demo-stage { position: relative; min-height: 260px; padding: 18px; border: 1px dashed var(--color-border-strong); border-radius: 14px; background: #fff; overflow: auto; }
.demo-stage > p { margin-bottom: 0; color: var(--color-text-tertiary); font-size: 13px; }
.demo-log { margin-top: 14px; padding: 12px 14px; border-radius: 10px; background: var(--color-background-inverse); color: #e9ecef; font-family: ui-monospace, monospace; font-size: 13px; min-height: 68px; white-space: pre-wrap; }
/* Popup.js DOM 구조: dialog.popup > article > header/body/footer */
dialog.popup { padding: 0; border: 0; border-radius: 16px; background: transparent; box-shadow: var(--shadow-3); max-width: min(92vw, 560px); width: auto; overflow: visible; }
dialog.popup::backdrop { background: rgba(0,0,0,.45); }
dialog.popup > article { width: min(520px, calc(100vw - 40px)); overflow: hidden; border: 1px solid var(--color-border-subtle); border-radius: 16px; background: #fff; box-shadow: var(--shadow-3); }
dialog.popup > article > header { position: static; display: flex; align-items: center; justify-content: flex-start; gap: 10px; min-height: 58px; padding: 14px 18px; background: var(--color-brand-primary); border: 0; box-shadow: none; color: #fff; cursor: default; }
dialog.popup > article > header .category { padding: 3px 8px; border-radius: 999px; background: rgba(255,255,255,.18); font-size: 12px; font-weight: 700; }
dialog.popup > article > header h1 { min-width: 0; margin: 0; color: #fff; font-size: 18px; line-height: 26px; }
dialog.popup > article > header time { margin-left: auto; color: rgba(255,255,255,.78); font-size: 12px; white-space: nowrap; }
dialog.popup > article > header .btn-close { flex: 0 0 auto; width: 34px; height: 34px; margin-left: auto; border: 0; border-radius: 8px; background: rgba(255,255,255,.12); color: #fff; cursor: pointer; font-size: 0; }
dialog.popup > article > header .btn-close::before { content: "×"; font-size: 24px; line-height: 1; }
dialog.popup > article > .body { padding: 24px; color: var(--color-text-primary); }
dialog.popup > article > .body p:last-child { margin-bottom: 0; }
dialog.popup > article > footer { display: flex; align-items: center; justify-content: flex-end; gap: 8px; max-width: none; margin: 0; padding: 14px 18px; background: var(--color-background-surface); border-top: 1px solid var(--color-border-subtle); color: var(--color-text-primary); font-size: 14px; }
dialog.popup > article > footer .backing-check { display: flex; align-items: center; gap: 6px; margin-right: auto; color: var(--color-text-secondary); font-size: 13px; }
dialog.popup > article > footer button { min-height: 38px; padding: 8px 14px; border: 1px solid var(--color-border-default); border-radius: 8px; background: #fff; color: var(--color-text-primary); font: inherit; font-weight: 700; cursor: pointer; }
dialog.popup > article > footer .btn-confirm { border-color: var(--color-brand-primary); background: var(--color-brand-primary); color: #fff; }
dialog.popup > article > footer .btn-sub { border-color: var(--color-secondary-500); color: var(--color-secondary-700); }
dialog.popup.in-container { position: absolute; z-index: 5; top: 58px; left: 50%; margin: 0; transform: translateX(-50%); }
dialog.popup.in-container::backdrop { display: none; }
dialog.popup.is-dragable > article > header { cursor: move; user-select: none; }
dialog.popup.closing { animation: popupDemoClose .2s ease forwards; }
@keyframes popupDemoClose { to { opacity: 0; transform: translateY(10px) scale(.98); } }
@media (max-width: 640px) {
  dialog.popup > article > footer { align-items: stretch; flex-wrap: wrap; }
  dialog.popup > article > footer .backing-check { width: 100%; margin-right: 0; }
}

/* ── L05: Slider ── */
.page-l05 #overview .section-header::before { content: "COFORWARD SLIDER · USER GUIDE"; }