:root {
  /* 배경: 완전 순백색 */
  --bg: #ffffff;
  --panel: #ffffff;
  --panel-strong: #ffffff;

  /* 테두리: 미니멀한 라이트 그레이 */
  --line: #f1f3f2;
  --line-strong: #e2e8f0;

  /* 텍스트: 깊이감 있는 블랙 */
  --text: #1a1a1a;
  --muted: #666666;

  /* 포인트 컬러: 신뢰감을 주는 에메랄드 그린 (필요한 곳에만 사용) */
  --primary: #059669;
  --primary-soft: #ecfdf5;
  --primary-hover: #047857;

  /* 상태 색상: 정제된 톤 */
  --blue: #2563eb;
  --blue-soft: #eff6ff;
  --amber: #d97706;
  --amber-soft: #fffbeb;
  --danger: #dc2626;
  --danger-soft: #fef2f2;

  /* 그림자와 라운드: 부드러운 현대적 감각 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family:
    "Pretendard Variable",
    Pretendard,
    -apple-system,
    BlinkMacSystemFont,
    "Apple SD Gothic Neo",
    sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  min-height: 100vh;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

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

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

/* 사이드바: 깨끗하고 정돈된 화이트 레이아웃 */
.toc {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow: auto;
  background: #ffffff;
  border-right: 1px solid var(--line);
  padding: 40px 24px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 32px;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  background: var(--primary);
  /* 로고에만 포인트 색상 기록 */
}

.brand h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.brand p {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.toc .group {
  margin-top: 32px;
}

.toc .group-title {
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #a0a0a0;
  margin: 0 0 12px 8px;
  font-weight: 600;
}

.toc a {
  display: block;
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  color: #555555;
  transition: all 0.2s;
}

.toc a:hover {
  background: #f8faf9;
  color: var(--primary);
}

.toc a.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

/* 본문 영역: 넉넉한 여백과 정보의 층위 */
.main {
  padding: 60px 80px;
  max-width: 1200px;
}

.hero {
  margin-bottom: 60px;
}

.hero .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.hero h2 {
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.hero-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.hero-grid .tile {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.hero-grid .tile .k {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.hero-grid .tile .v {
  display: block;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

section {
  margin-top: 60px;
}

.sec-title {
  margin: 0 0 12px;
  font-size: 24px;
  font-weight: 700;
}

.sec-desc {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 16px;
}

/* 카드 및 스텝 디자인: 단순하지만 세련되게 */
.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.step {
  padding: 0;
}

.step .num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.step h4 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.step p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--muted);
}

/* =============================================
   실제 프로그램 UI 목업 (High-Fidelity Mockup)
   ============================================= */

/* 앱 전체 프레임 (창 모양) */
.app-mock {
  margin-top: 0;
  border: 1px solid #d1d5db;
  border-radius: 12px 12px 0 0;
  overflow: hidden;
  background: #f4f4f5;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.25s ease;
}

.app-mock:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.14);
}

/* --- 커스텀 타이틀바 (초록 바) --- */
.app-titlebar {
  height: 32px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  user-select: none;
}

.app-titlebar .tb-brand {
  position: absolute;
  left: 12px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
}

.app-titlebar .tb-title {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
}

.app-titlebar .tb-controls {
  position: absolute;
  right: 12px;
  display: flex;
  gap: 6px;
}

.app-titlebar .tb-controls span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}

.app-titlebar .tb-controls .c-yellow {
  background: #fbbf24;
}

.app-titlebar .tb-controls .c-green {
  background: #34d399;
}

.app-titlebar .tb-controls .c-red {
  background: #f87171;
}

/* --- 상단 내비게이션 바 (TopNavbar) --- */
.app-navbar {
  height: 48px;
  background: #fff;
  border-bottom: 1px solid var(--primary);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 4px;
}

.app-navbar .nav-logo {
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
  margin-right: 8px;
  white-space: nowrap;
}

.app-navbar .nav-tabs {
  display: flex;
  gap: 2px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.app-navbar .nav-tab {
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  color: #9ca3af;
  white-space: nowrap;
  line-height: 1.3;
}

.app-navbar .nav-tab.active {
  background: var(--primary);
  color: #fff;
}

.app-navbar .nav-right {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  white-space: nowrap;
}

.app-navbar .nav-btn {
  font-size: 11px;
  font-weight: 600;
  border: 1px solid #d1d5db;
  padding: 4px 10px;
  border-radius: 6px;
  background: #fff;
  color: #374151;
}

.app-navbar .nav-gear {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  color: #9ca3af;
  font-size: 14px;
}

/* --- 페이지 콘텐츠 영역 --- */
.app-content {
  padding: 20px;
  background: #f4f4f5;
}

/* --- 페이지 헤더 (PageHeaderSlim) --- */
.page-header {
  background: #fff;
  border: 1px solid var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  margin-bottom: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.page-header .ph-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.page-header .ph-kpis {
  display: flex;
  gap: 8px;
}

/* --- KPI 배지 (KpiStatBadge) --- */
.kpi-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid;
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 11px;
}

.kpi-badge .kb-icon {
  opacity: 0.65;
  font-size: 13px;
}

.kpi-badge .kb-label {
  font-weight: 600;
  opacity: 0.8;
}

.kpi-badge .kb-value {
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
}

.kpi-badge.kpi-primary {
  background: rgba(5, 150, 105, 0.08);
  border-color: var(--primary);
  color: var(--primary);
}

.kpi-badge.kpi-blue {
  background: rgba(37, 99, 235, 0.08);
  border-color: var(--blue);
  color: var(--blue);
}

.kpi-badge.kpi-orange {
  background: rgba(234, 88, 12, 0.08);
  border-color: #ea580c;
  color: #ea580c;
}

.kpi-badge.kpi-purple {
  background: rgba(124, 58, 237, 0.08);
  border-color: #7c3aed;
  color: #7c3aed;
}

.kpi-badge.kpi-red {
  background: rgba(220, 38, 38, 0.08);
  border-color: var(--danger);
  color: var(--danger);
}

/* --- 필터/검색 바 --- */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.filter-input {
  display: flex;
  align-items: center;
  gap: 4px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 5px 10px;
  background: #fff;
  font-size: 12px;
  color: #9ca3af;
}

.filter-input .fi-icon {
  font-size: 13px;
}

.filter-select {
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 5px 10px;
  background: #fff;
  font-size: 12px;
  color: #374151;
  font-weight: 500;
}

.filter-divider {
  width: 1px;
  height: 20px;
  background: #e5e7eb;
}

.filter-bar .ml-auto {
  margin-left: auto;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
}

.action-btn.outline {
  background: #fff;
  color: #374151;
  border: 1px solid #d1d5db;
}

/* --- 데이터 그리드 (DataGrid) --- */
.data-grid {
  background: #fff;
  border: 1px solid var(--primary);
  border-radius: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--primary-soft);
}

.data-grid::-webkit-scrollbar {
  height: 6px;
}

.data-grid::-webkit-scrollbar-track {
  background: var(--primary-soft);
}

.data-grid::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 999px;
}

.grid-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.grid-table th {
  padding: 10px 12px;
  background: #fafafa;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  color: #64748b;
  border-bottom: 1px solid #e5e7eb;
  white-space: nowrap;
}

.grid-table th.num {
  text-align: center;
  width: 36px;
}

.grid-table td {
  padding: 9px 12px;
  border-bottom: 1px solid #f3f4f6;
  color: #374151;
  white-space: nowrap;
}

.grid-table td.num {
  text-align: center;
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 11px;
}

.grid-table td.currency {
  text-align: right;
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 11px;
}

.grid-table td.currency.zero {
  color: #9ca3af;
}

.grid-table td.currency.danger {
  color: #ef4444;
  font-weight: 700;
}

.grid-table td.currency.warn {
  color: #f97316;
}

.grid-table tbody tr:hover {
  background: #f0fdf4;
}

/* 서브 배지 (자유/이용권 등) */
.sub-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  margin-right: 2px;
}

.sub-badge.voucher {
  background: #dcfce7;
  color: #166534;
}

.sub-badge.coupon {
  background: #fef3c7;
  color: #92400e;
}

.sub-badge.special {
  background: #ede9fe;
  color: #6b21a8;
}

.sub-badge.none {
  background: #f1f5f9;
  color: #94a3b8;
}

.sub-badge.has {
  background: #ede9fe;
  color: #6b21a8;
}

.sub-badge.no {
  background: #f1f5f9;
  color: #94a3b8;
}

/* --- 정산 탭 (서브탭) --- */
.sub-tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--primary);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.sub-tab {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  color: #9ca3af;
}

.sub-tab.active {
  background: var(--primary);
  color: #fff;
}

/* --- 정산 요약 카드 그리드 --- */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 6px;
  margin-bottom: 12px;
}

.summary-card {
  background: #fff;
  border: 1px solid var(--primary);
  border-radius: 8px;
  padding: 10px;
}

.summary-card .sc-label {
  font-size: 10px;
  color: #94a3b8;
}

.summary-card .sc-value {
  font-size: 12px;
  font-weight: 800;
  color: var(--primary);
  margin-top: 2px;
}

.summary-card .sc-value.muted {
  color: var(--text);
}

.summary-card .sc-value.danger {
  color: var(--danger);
}

.summary-card.muted {
  background: #f9fafb;
}

.mock-popover {
  margin-top: 8px;
  margin-left: auto;
  width: 320px;
  background: #fff;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.mock-popover-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 8px;
  background: #f3f4f6;
  margin-bottom: 10px;
}

.mock-popover-tab {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #6b7280;
}

.mock-popover-tab.active {
  background: var(--primary);
  color: #fff;
}

.mock-option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.mock-option-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 9px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-size: 11px;
  color: #374151;
  background: #fff;
}

.mock-switch {
  width: 28px;
  height: 16px;
  border-radius: 999px;
  background: #d1d5db;
  position: relative;
  flex-shrink: 0;
}

.mock-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.mock-switch.on {
  background: var(--primary);
}

.mock-switch.on::after {
  left: 14px;
}

.mock-chip-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.mock-chip {
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid #fdba74;
  background: #fff7ed;
  color: #9a3412;
  font-size: 10px;
  font-weight: 700;
}

.mock-settings-stack {
  display: grid;
  gap: 8px;
}

.mock-settings-card {
  background: #fff;
  border: 1px solid var(--primary);
  border-radius: 10px;
  padding: 10px;
}

.mock-settings-title {
  font-size: 12px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 6px;
}

.mock-settings-meta {
  font-size: 10px;
  color: #6b7280;
}

.mock-action-sheet {
  margin-top: 10px;
  margin-left: auto;
  width: 250px;
  background: #fff;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  padding: 10px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.14);
}

.mock-action-title {
  font-size: 12px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 8px;
}

.mock-action-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-size: 11px;
  color: #374151;
  background: #fff;
  margin-bottom: 6px;
}

.mock-action-item:last-child {
  margin-bottom: 0;
}

.mock-action-icon {
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: #f3f4f6;
  color: #047857;
  font-size: 11px;
  font-weight: 800;
  flex-shrink: 0;
}

/* --- 레거시 호환: 기존 .mock 스타일 유지 --- */
.mock {
  margin-top: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.mock-title {
  height: 40px;
  background: #f8fafc;
  border-bottom: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  padding: 0 16px;
}

.mock-title::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #cbd5e1;
  box-shadow:
    16px 0 0 #cbd5e1,
    32px 0 0 #cbd5e1;
}

.mock-nav {
  display: flex;
  padding: 0 16px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.mock-tab {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 600;
  color: #94a3b8;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}

.mock-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.mock-toolbar {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.btn-chip {
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  padding: 6px 12px;
  border-radius: 6px;
  background: #fff;
  color: #475569;
}

.btn-chip.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 표(테이블) 디자인 */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  padding: 12px 16px;
  background: #f8fafc;
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  color: #64748b;
  border-bottom: 1px solid var(--line-strong);
}

.table td {
  padding: 14px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
}

.badge-green {
  background: #dcfce7;
  color: #166534;
}

.badge-blue {
  background: #dbeafe;
  color: #1e40af;
}

.badge-gray {
  background: #f1f5f9;
  color: #475569;
}

.badge-red {
  background: #fef2f2;
  color: #dc2626;
}

/* 안내 블록 — 수직 레이아웃 (목업 전체 너비 → 설명 아래) */
.instruction-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 48px;
}

.instruction-text {
  order: 2;
  padding: 28px 32px;
  background: #f8faf8;
  border: 1px solid #e2e8e4;
  border-radius: 0 0 12px 12px;
  margin-top: -1px;
}

.instruction-text h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.4;
}

.instruction-text h4 .step-circle {
  width: 28px;
  height: 28px;
  min-width: 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.instruction-text p {
  font-size: 15.5px;
  line-height: 1.7;
  color: #374151;
}

.instruction-text .list {
  margin-top: 12px;
}

.instruction-text .list li {
  font-size: 15px;
  line-height: 1.65;
}

.instruction-visual {
  order: 1;
  width: 100%;
}

/* 텍스트만 있는 instruction-block (visual 없음) */
.instruction-block .instruction-text:only-child {
  border-radius: 12px;
  margin-top: 0;
}

/* mock-modal이 instruction-visual 안에 있는 경우 */
.instruction-visual .mock-modal {
  border-radius: 12px 12px 0 0;
  border: 1px solid #d1d5db;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.info,
.warn,
.danger {
  padding: 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-top: 24px;
  border-left: 4px solid;
}

.info {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #475569;
}

.warn {
  background: #fffbeb;
  border-color: #fbbf24;
  color: #92400e;
}

.danger {
  background: #fef2f2;
  border-color: #f87171;
  color: #991b1b;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.mini {
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: 10px;
}

.foot {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1024px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    min-width: 0;
  }

  .toc,
  .main,
  .instruction-visual,
  .app-mock,
  .app-content,
  .data-grid {
    min-width: 0;
    max-width: 100%;
  }

  .toc {
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 24px;
  }

  .toc nav {
    display: flex;
    gap: 8px;
    overflow: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--primary-soft);
    scroll-snap-type: x proximity;
    mask-image: linear-gradient(
      to right,
      transparent,
      #000 14px,
      #000 calc(100% - 14px),
      transparent
    );
  }

  .toc .group {
    margin-top: 0;
  }

  .toc nav .group {
    display: contents;
  }

  .toc nav .group-title {
    display: none;
  }

  .toc nav a {
    flex: 0 0 auto;
    padding: 8px 12px;
    white-space: nowrap;
    scroll-snap-align: start;
  }

  .toc nav::-webkit-scrollbar {
    height: 5px;
  }

  .toc nav::-webkit-scrollbar-track {
    background: var(--primary-soft);
  }

  .toc nav::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 999px;
  }

  .main {
    padding: 40px 24px;
  }

  .instruction-block {
    flex-direction: column;
  }

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

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-header .ph-kpis {
    flex-wrap: wrap;
  }

  .mock-popover,
  .mock-action-sheet {
    width: 100%;
    margin-left: 0;
  }

  .mock-option-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .toc {
    padding: 16px 20px 12px;
  }

  .toc .brand {
    margin-bottom: 12px;
  }

  .hero h2 {
    font-size: 30px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-grid,
  .step-grid,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 24px 20px;
  }

  .app-navbar {
    padding: 0 10px;
  }

  .app-navbar .nav-logo {
    display: none;
  }

  .app-navbar .nav-tabs {
    overflow-x: auto;
    gap: 0;
    scrollbar-width: thin;
  }

  .app-navbar .nav-tab {
    padding: 5px 5px;
    font-size: 10px;
  }

  .app-content {
    padding: 14px;
  }

  .filter-bar {
    gap: 6px;
  }

  .filter-bar .ml-auto {
    margin-left: 0;
    width: 100%;
  }

  .filter-bar .ml-auto .action-btn,
  .filter-bar .ml-auto .action-btn.outline {
    justify-content: center;
  }

  .grid-table {
    min-width: 720px;
  }

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

  .instruction-text {
    padding: 22px 18px;
  }
}