/**
 * 모듈트레이딩 랜딩페이지 공통 스타일 및 컴포넌트 (styles/landing.css)
 */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

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

/* ── 키보드 포커스 및 웹 접근성 (Accessibility) ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -50px;
  left: 20px;
  background: var(--ink);
  color: #ffffff;
  padding: 8px 16px;
  z-index: 1000;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* 숫자/코드/가격 폰트 및 고정폭 정렬 */
.font-mono,
.num,
.code,
.price-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ── 컨테이너 및 섹션 뼈대 ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
  position: relative;
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--section-gap-mobile);
    padding-bottom: var(--section-gap-mobile);
  }
}

.section-alt {
  background-color: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ── 섹션 헤더 (Eyebrow + Title + Subtitle) ── */
.section-header {
  max-width: 680px;
  margin-bottom: 48px;
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem; /* 36px (27pt) */
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 16px;
  word-break: keep-all;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.75rem; /* 28px (21pt) */
  }
}

/* 헤드라인 카피문: 일반 패널 제목(.section-title) 대비 정확히 2point(+2.67px) 더 큼 */
.hero-main-title {
  font-size: calc(2.25rem + 2.67px) !important; /* 38.67px (29pt = 27pt + 2pt) */
  font-weight: 900 !important;
  letter-spacing: -0.035em !important;
  line-height: 1.2 !important;
  color: var(--ink);
  margin-bottom: 20px;
  white-space: nowrap !important;
  word-break: keep-all;
}

@media (max-width: 768px) {
  .hero-main-title {
    font-size: calc(1.75rem + 2.67px) !important; /* 30.67px (23pt = 21pt + 2pt) */
    letter-spacing: -0.04em !important;
    white-space: nowrap !important;
  }
}

@media (max-width: 360px) {
  .hero-main-title {
    font-size: calc(1.75rem + 2.67px) !important; /* 30.67px (23pt = 21pt + 2pt) */
    letter-spacing: -0.055em !important;
    white-space: nowrap !important;
  }
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--ink-secondary);
  line-height: 1.6;
  word-break: keep-all;
}

/* ── 버튼 (Button) ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn-secondary:hover {
  background-color: var(--surface-alt);
  border-color: var(--ink-secondary);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  font-size: 1.05rem;
  padding: 14px 32px;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ── 카드 (Card) ── */
.card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: var(--line-strong);
}

.card-highlight {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--surface) 0%, var(--accent-soft) 100%);
}

/* ── 뱃지 (Badge) ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  line-height: 1;
}

.badge-blue {
  background-color: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(29, 78, 216, 0.2);
}

.badge-neutral {
  background-color: var(--surface-alt);
  color: var(--ink-secondary);
  border: 1px solid var(--line);
}

/* ── 12열 그리드 시스템 ── */
.grid {
  display: grid;
  gap: 24px;
}

.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* ── 헤더 네비게이션 ── */
/* ── 헤더 네비게이션 (진곤색 딥 네이비 패널) ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #091426;
  background-color: rgba(9, 20, 38, 0.95) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12) !important;
  height: var(--header-height);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff !important;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-logo span {
  color: #ffffff !important;
}

.brand-icon {
  width: 24px;
  height: 24px;
  color: #60a5fa !important;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: #cbd5e1 !important;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: #ffffff !important;
}

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

/* 모바일 햄버거 메뉴 */
.mobile-menu-btn {
  display: none;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25) !important;
  border-radius: var(--radius-sm);
  padding: 6px;
  color: #ffffff !important;
  cursor: pointer;
}

@media (max-width: 960px) {
  .nav-menu {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
}

.mobile-nav-panel {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: #091426 !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12) !important;
  padding: 20px;
}

.mobile-nav-panel .nav-link {
  color: #e2e8f0 !important;
}
  box-shadow: var(--shadow-md);
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-panel.is-open {
  display: flex;
}

/* ── 푸터 ── */
.site-footer {
  background-color: var(--ink);
  color: #94a3b8;
  padding-top: 60px;
  padding-bottom: 60px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-nav a {
  color: #cbd5e1;
  transition: color 0.15s ease;
}

.footer-nav a:hover {
  color: #ffffff;
}

.footer-business {
  line-height: 1.8;
  word-break: keep-all;
  font-size: 0.8rem;
}

.footer-business span {
  display: inline-block;
  margin-right: 12px;
}

.footer-disclaimer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  line-height: 1.6;
  color: #64748b;
}

/* ── 히어로 SVG 차트 애니메이션 및 스타일 ── */
.hero-chart-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.hero-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.hero-chart-view {
  width: 100%;
  height: 280px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.chart-line {
  stroke-dasharray: 900;
  stroke-dashoffset: 0;
  animation: drawLine 1.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes drawLine {
  0% { stroke-dashoffset: 900; }
  100% { stroke-dashoffset: 0; }
}

.chart-marker {
  animation: fadeInMarker 0.4s ease forwards;
}

@keyframes fadeInMarker {
  0% { opacity: 0; transform: scale(0.5); }
  100% { opacity: 1; transform: scale(1); }
}

.hero-chart-footer {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--ink-secondary);
}

/* ── 작동 방식 4단계 도식 (How It Works) ── */
.how-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

@media (max-width: 900px) {
  .how-timeline {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.how-step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.how-step-card:hover {
  border-color: var(--accent);
}

.how-diagram {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 16px;
  min-height: 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 0.8rem;
}

/* ── 원리 6대 원칙 (Principles) ── */
.principle-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s ease;
}

.principle-card:hover {
  border-color: var(--line-strong);
}

.principle-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.principle-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent);
}

.principle-en {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
}

.principle-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 10px;
}

/* ── 비교표 (Compare Table) ── */
.compare-container {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.compare-table th {
  padding: 18px 24px;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
  background: var(--surface-alt);
}

.compare-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  line-height: 1.5;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-col-highlight {
  background-color: var(--accent-soft);
  color: var(--ink);
  font-weight: 600;
  border-left: 1px solid rgba(29, 78, 216, 0.15);
  border-right: 1px solid rgba(29, 78, 216, 0.15);
}

.compare-table th.compare-col-highlight {
  color: var(--accent);
  background-color: var(--accent-soft);
}

/* ── 지원 증권사 (Brokers) ── */
.broker-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  transition: border-color 0.2s ease;
}

.broker-card:hover {
  border-color: var(--accent);
}

.broker-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--surface-alt);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}

/* ── 모듈 시뮬레이터 (Simulator Component) ── */
.sim-wrapper {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.sim-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 32px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  align-items: start;
}

/* 그리드 아이템 min-width:0 — grid item이 내용보다 작게 축소될 수 있도록 */
.sim-grid > * {
  min-width: 0 !important;
  max-width: 100% !important;
  box-sizing: border-box;
  overflow: hidden;
}

@media (max-width: 960px) {
  .sim-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.sim-controls {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.sim-control-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  box-sizing: border-box;
}

.sim-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  gap: 6px;
}

.sim-val-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}

.sim-slider {
  width: 100%;
  max-width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
  box-sizing: border-box;
}

.sim-btn-group {
  display: flex;
  gap: 6px;
  width: 100%;
  box-sizing: border-box;
}

.sim-btn-opt {
  flex: 1 1 0;
  min-width: 0;
  padding: 8px 4px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
  box-sizing: border-box;
}

.sim-btn-opt.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.sim-visual-column {
  min-width: 0 !important;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* (a) 자금 배분 막대 */
.sim-alloc-section {
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.sim-alloc-bars {
  display: flex;
  height: 28px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  gap: 2px;
  background: var(--surface-alt);
  margin-top: 8px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.sim-alloc-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  transition: width 0.3s ease;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  box-sizing: border-box;
}

.sim-alloc-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--ink-secondary);
  width: 100%;
  box-sizing: border-box;
}

.sim-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.sim-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* (b) 시뮬레이터 차트 */
.sim-chart-section {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.sim-chart-box {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  height: 240px;
  width: 100%;
  max-width: 100%;
  position: relative;
  overflow: hidden !important;
  box-sizing: border-box;
}

.sim-chart-box svg {
  width: 100% !important;
  height: 100% !important;
  display: block;
  overflow: hidden !important;
}

/* (c) 주문 로그 표 */
.sim-log-section {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.sim-log-table-wrap {
  max-height: 230px;
  overflow-y: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background: var(--surface);
}

.sim-log-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.sim-log-table th {
  position: sticky;
  top: 0;
  background: var(--surface-alt);
  padding: 10px 14px;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
  color: var(--ink-secondary);
  font-size: 0.8rem;
  white-space: nowrap;
}

.sim-log-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  white-space: nowrap;
}

.sim-log-table tr:last-child td {
  border-bottom: none;
}

.tag-buy {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--up-soft);
  color: var(--up);
  font-weight: 700;
  font-size: 0.75rem;
}

.tag-sell {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--down-soft);
  color: var(--down);
  font-weight: 700;
  font-size: 0.75rem;
}

/* ── 폼 컴포넌트 (Form Controls) ── */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background-color: var(--surface);
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-control::placeholder {
  color: var(--ink-muted);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  padding-right: 38px;
  cursor: pointer;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--ink-secondary);
  line-height: 1.5;
  margin-top: 8px;
  cursor: pointer;
}

.form-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--accent);
  cursor: pointer;
}

.form-alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-top: 16px;
  display: none;
}

.form-alert-success {
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.form-alert-error {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

/* ── FAQ 아코디언 스타일 ── */
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  transition: all 0.2s ease;
}

.faq-item[open] {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--ink-muted);
  margin-left: 16px;
  transition: transform 0.2s ease, color 0.2s ease;
  line-height: 1;
}

.faq-item[open] .faq-icon {
  color: var(--accent);
}

.faq-answer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  word-break: keep-all;
}

/* ── 요금 및 고지 스타일 ── */
.pricing-disclaimer-box {
  margin-top: 40px;
  padding: 22px 28px;
  background: var(--surface-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  text-align: center;
  word-break: keep-all;
}

/* ── 접근성 및 모션 감축 ── */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .chart-line {
    animation: none;
    stroke-dashoffset: 0;
  }
}

/* ── 2-in-1 통합 회원가입/로그인 탭 모달 스타일 ── */
.auth-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: rgba(15, 28, 48, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.auth-modal-overlay.active {
  display: flex;
  opacity: 1;
}

.auth-modal-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(15, 28, 48, 0.24);
  width: 100%;
  max-width: 440px;
  position: relative;
  overflow: hidden;
  animation: authModalSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes authModalSlideIn {
  from {
    transform: translateY(16px) scale(0.97);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.auth-modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.auth-modal-title-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.auth-modal-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background-color: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(29, 78, 216, 0.2);
}

.auth-modal-badge.pro {
  background-color: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  border-color: rgba(37, 99, 235, 0.3);
}

.auth-modal-badge.biz {
  background-color: rgba(124, 58, 237, 0.1);
  color: #7c3aed;
  border-color: rgba(124, 58, 237, 0.3);
}

.auth-modal-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--ink-muted);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.auth-modal-close:hover {
  color: var(--ink);
  background-color: var(--surface-alt);
}

.auth-tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--line);
  background-color: var(--surface-alt);
}

.auth-tab-btn {
  flex: 1;
  text-align: center;
  padding: 13px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-secondary);
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.auth-tab-btn:hover {
  color: var(--ink);
}

.auth-tab-btn.active {
  color: var(--accent);
  background-color: var(--surface);
  font-weight: 700;
}

.auth-tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent);
}

.auth-modal-body {
  padding: 24px;
}

.auth-notice-box {
  background-color: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: 0.84rem;
  color: var(--ink-secondary);
  margin-bottom: 18px;
  line-height: 1.5;
}

.auth-form-group {
  margin-bottom: 16px;
}

.auth-form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.auth-form-input {
  width: 100%;
  padding: 11px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--ink);
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.auth-form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.auth-agree-wrap {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.82rem;
  color: var(--ink-secondary);
  line-height: 1.4;
}

.auth-agree-wrap input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.auth-status-msg {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  display: none;
}

.auth-status-msg.error {
  display: block;
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.auth-status-msg.success {
  display: block;
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.auth-switch-text {
  text-align: center;
  font-size: 0.84rem;
  color: var(--ink-muted);
  margin-top: 16px;
}

.auth-switch-text a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
  margin-left: 4px;
}

/* ── 반응형 레이아웃 보강 (max-width: 960px / 640px / 400px) ── */
@media (max-width: 960px) {
  .sim-wrapper {
    padding: 24px;
  }
  .sim-grid {
    grid-template-columns: 1fr !important;
    gap: 24px;
    width: 100%;
    overflow: hidden;
  }
  .sim-grid > * {
    min-width: 0 !important;
    max-width: 100% !important;
    width: 100%;
    overflow: hidden;
  }
}

@media (max-width: 640px) {
  /* 래퍼 패딩 축소 및 100% 가둠 */
  .sim-wrapper {
    padding: 16px;
    border-radius: var(--radius-md);
    width: 100%;
    box-sizing: border-box;
  }

  .sim-grid {
    grid-template-columns: 1fr !important;
    gap: 18px;
    width: 100%;
  }

  .sim-controls {
    padding: 18px 14px;
    gap: 16px;
  }

  .sim-btn-group {
    display: flex;
    gap: 4px;
    width: 100%;
    box-sizing: border-box;
  }

  .sim-btn-opt {
    flex: 1 1 0;
    min-width: 0;
    padding: 7px 3px;
    font-size: 0.8rem;
  }

  .sim-alloc-section {
    width: 100%;
    overflow: hidden;
  }

  .sim-alloc-bars {
    height: 24px;
    width: 100%;
    overflow: hidden;
  }

  .sim-chart-box {
    height: 210px;
    width: 100%;
    max-width: 100%;
    overflow: hidden !important;
  }

  .sim-chart-box svg {
    overflow: hidden !important;
    max-width: 100% !important;
  }

  .sim-log-table-wrap {
    width: 100%;
    max-width: 100%;
    max-height: 210px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .sim-log-table {
    font-size: 0.75rem;
    min-width: 440px;
  }

  .sim-log-table th {
    padding: 6px 8px;
    font-size: 0.75rem;
  }

  .sim-log-table td {
    padding: 6px 8px;
  }
}

@media (max-width: 400px) {
  #btn-start-header {
    display: none;
  }

  .sim-wrapper {
    padding: 12px;
  }

  .sim-controls {
    padding: 14px 10px;
  }

  .sim-btn-opt {
    padding: 6px 2px;
    font-size: 0.74rem;
  }

  .sim-log-table {
    font-size: 0.72rem;
    min-width: 380px;
  }

  .sim-log-table th,
  .sim-log-table td {
    padding: 5px 6px;
  }
}

/* ── 히어로 섹션 선명한 블루 배경 및 가독성 ── */
#top {
  background: linear-gradient(135deg, #091e42 0%, #173e86 35%, #1d4ed8 70%, #2563eb 100%) !important;
  --ink: #ffffff;
  --ink-secondary: rgba(224, 238, 255, 0.92);
  --ink-muted: rgba(191, 219, 254, 0.8);
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.3);
  --accent: #60a5fa;
  --accent-hover: #93c5fd;
  --surface: rgba(255, 255, 255, 0.1);
  --surface-alt: rgba(255, 255, 255, 0.05);
  position: relative;
}

#top .grid-cols-2 {
  grid-template-columns: 1.25fr 0.95fr;
  align-items: center;
}

@media (max-width: 960px) {
  #top .grid-cols-2 {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
  }
}

#top .hero-main-title {
  color: #ffffff !important;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.28);
}

#top .eyebrow {
  color: #bfdbfe !important;
  background: rgba(255, 255, 255, 0.12);
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid rgba(191, 219, 254, 0.35);
  font-weight: 700;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}

#top .section-subtitle {
  color: rgba(239, 246, 255, 0.92) !important;
}

#top .btn-primary {
  background: #ffffff !important;
  color: #1d4ed8 !important;
  border: 1px solid #ffffff !important;
  font-weight: 800 !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2) !important;
  transition: all 0.2s ease;
}
#top .btn-primary:hover {
  background: #eff6ff !important;
  color: #1e40af !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25) !important;
}

#top .btn-secondary {
  background: rgba(255, 255, 255, 0.12) !important;
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.35) !important;
  backdrop-filter: blur(6px);
  font-weight: 700 !important;
  transition: all 0.2s ease;
}
#top .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22) !important;
  border-color: rgba(255, 255, 255, 0.6) !important;
}

/* 차트 카드는 라이트 테마로 복원 */
#top .hero-chart-card {
  --ink: #0f1c30;
  --ink-secondary: #4a5b73;
  --ink-muted: #7e8ea6;
  --line: #e2e8f0;
  --line-strong: #cbd5e1;
  --accent: #1d4ed8;
  --accent-hover: #1e40af;
  --surface: #ffffff;
  --surface-alt: #eff3f8;
  background: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 45px rgba(5, 15, 35, 0.3) !important;
}