:root {
  --bg: #f2f4f8;
  --ink: #111827;
  --muted: #4b5563;
  --card: #ffffff;
  --line: #dbe2ea;
  --primary: #1d4ed8;
  --primary-soft: #e8f0ff;
  --accent: #0f766e;
  --shadow: 0 14px 28px rgba(17, 24, 39, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans KR", Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f2f4f8 0%, #eef3fb 100%);
  line-height: 1.7;
}

img {
  width: 100%;
  max-width: 100%;
  display: block;
}

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

.progress-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #1d4ed8, #0f766e);
  z-index: 30;
}

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 18px;
  background: rgba(236, 241, 250, 0.92);
  border-bottom: 1px solid #cfdcf0;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(52, 72, 110, 0.08);
}

.logo {
  font-weight: 800;
  letter-spacing: 0.2px;
  color: #17325f;
  background: #ffffff;
  border: 1px solid #bfd1ee;
  border-radius: 999px;
  padding: 6px 12px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  border: 1px solid #bfd1ee;
  color: #17325f;
  background: #ffffff;
  border-radius: 8px;
  padding: 7px 9px;
}

.nav {
  display: flex;
  gap: 8px;
  font-size: 0.9rem;
  color: #52637d;
}

.nav a {
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: #4e617c;
}

.nav a.active {
  background: #1d4ed8;
  color: #ffffff;
  border-color: #1d4ed8;
}

.nav a:hover {
  border-color: #bfd1ee;
  background: #f6f9ff;
  color: #17325f;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 18px 70px;
}

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 18px;
}

.hero-inner,
.hero-stats {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.tag {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  line-height: 1.3;
}

h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.9rem);
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.btn {
  display: inline-block;
  padding: 10px 15px;
  border-radius: 10px;
  font-weight: 600;
}

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

.btn-ghost {
  border: 1px solid var(--line);
  background: #fff;
}

.stat {
  border-top: 1px dashed var(--line);
  padding-top: 10px;
  margin-top: 10px;
}

.stat strong {
  display: block;
  font-size: 1.8rem;
  color: var(--accent);
}

.stat span {
  color: var(--muted);
  font-size: 0.92rem;
}

.cover {
  margin-top: 18px;
}

.cover img {
  border-radius: 18px;
  height: clamp(280px, 38vw, 480px);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.columns {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.panel,
.timeline,
.newsletter,
.feature-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.panel,
.timeline,
.newsletter {
  padding: 20px;
}

.question-list {
  display: grid;
  gap: 8px;
}

.q-btn {
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 9px;
  padding: 10px 11px;
  cursor: pointer;
}

.q-btn.active {
  background: var(--primary-soft);
  border-color: #bfd2ff;
}

.answer-box {
  margin-top: 10px;
}

.q-answer {
  display: none;
  margin: 0;
  color: var(--muted);
}

.q-answer.active {
  display: block;
}

.feature-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.feature-card {
  overflow: hidden;
}

.feature-card img {
  height: 170px;
  object-fit: cover;
}

.feature-card h3,
.feature-card p {
  padding: 0 12px;
}

.feature-card h3 {
  margin-top: 10px;
}

.feature-card p {
  margin-bottom: 14px;
  color: var(--muted);
}

.timeline {
  margin-top: 20px;
}

.timeline-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.timeline-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: #fafcff;
}

.timeline-item span {
  display: inline-block;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.timeline-item p {
  margin: 0;
}

.newsletter {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 16px;
  align-items: start;
}

.mail-box {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: #f9fbff;
}

.mail-box label {
  display: block;
  margin-bottom: 6px;
}

.mail-box input {
  width: 100%;
  border: 1px solid #c8d4e5;
  border-radius: 9px;
  padding: 10px;
  font: inherit;
}

.mail-box button {
  margin-top: 10px;
  width: 100%;
  border: 0;
  border-radius: 9px;
  padding: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.mail-note {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 18px;
  text-align: center;
  color: var(--muted);
}

.top-btn {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 0;
  background: #0f766e;
  color: #fff;
  cursor: pointer;
  display: none;
}

.top-btn.show {
  display: block;
}

.section {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.dictionary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.dict-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfcff;
  padding: 12px;
}

.dict-card p {
  margin: 0;
  color: var(--muted);
}

.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.case-card {
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  padding: 12px;
}

.case-card img {
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 8px;
}

.case-card p {
  color: var(--muted);
}

.log-list details {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 11px;
  background: #fbfdff;
}

.log-list details + details {
  margin-top: 8px;
}

.log-list summary {
  cursor: pointer;
  font-weight: 600;
}

.log-list p {
  margin: 8px 0 2px;
  color: var(--muted);
}

.intensity-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.intensity-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.intensity-btn.active {
  background: #e9f7f5;
  border-color: #bfe7e1;
  color: #0f766e;
}

.intensity-meter {
  margin-top: 10px;
  height: 10px;
  border-radius: 999px;
  background: #e4ecf5;
  overflow: hidden;
}

#intensityBar {
  width: 28%;
  height: 100%;
  background: linear-gradient(90deg, #1d4ed8, #0f766e);
  transition: width 0.3s ease;
}

.intensity-result {
  margin-top: 8px;
  color: var(--muted);
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfdff;
  padding: 9px 11px;
}

.faq-list details + details {
  margin-top: 8px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  margin: 7px 0 2px;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.resource-list {
  margin: 0;
  padding-left: 20px;
}

.chip {
  display: inline-block;
  margin-right: 6px;
  margin-bottom: 6px;
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px solid #cfdcf0;
  background: #f4f8ff;
  font-size: 0.86rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

body.home-v2 .home-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.intro-band {
  display: grid;
  grid-template-columns: 1.1fr 0.6fr;
  gap: 14px;
}

.intro-main,
.intro-cover {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.intro-main {
  padding: 20px;
}

.intro-cover {
  grid-column: 1 / -1;
  overflow: hidden;
}

.intro-cover img {
  height: clamp(260px, 34vw, 460px);
  object-fit: cover;
}

.insight-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.insight-strip span {
  background: #edf3ff;
  border: 1px solid #d3e0fa;
  border-radius: 999px;
  padding: 8px 11px;
  font-size: 0.88rem;
  text-align: center;
}

.editorial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 0.8fr;
  gap: 12px;
}

.editorial-long,
.editorial-qa,
.editorial-mini {
  min-height: 100%;
}

.editorial-mini ul {
  margin: 0;
  padding-left: 18px;
}

body.home-v3 .report-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

body.home-v3 .report-nav {
  position: sticky;
  top: 62px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 14px;
}

body.home-v3 .report-nav h2 {
  font-size: 1rem;
  margin-bottom: 8px;
}

body.home-v3 .report-nav a {
  display: block;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--muted);
}

body.home-v3 .report-nav a:hover {
  background: #eef3ff;
  color: var(--primary);
}

body.home-v3 .report-nav p {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 0.86rem;
  color: var(--muted);
  word-break: break-all;
}

body.home-v3 .report-content {
  display: grid;
  gap: 16px;
}

@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .hero,
  .columns,
  .newsletter,
  .split,
  .timeline-list,
  .case-grid,
  .dictionary-grid {
    grid-template-columns: 1fr;
  }

  .intro-band,
  .editorial-grid,
  .insight-strip {
    grid-template-columns: 1fr;
  }

  body.home-v3 .report-shell {
    grid-template-columns: 1fr;
  }

  body.home-v3 .report-nav {
    position: static;
  }

  .nav-toggle {
    display: block;
  }

  .nav {
    display: none;
    position: absolute;
    right: 14px;
    top: 50px;
    background: #ffffff;
    border: 1px solid #bfd1ee;
    border-radius: 10px;
    padding: 10px;
    flex-direction: column;
    box-shadow: var(--shadow);
  }

  .nav a {
    color: #4e617c;
  }

  .nav a.active {
    color: #ffffff;
  }

  .nav.open {
    display: flex;
  }

  .cover img {
    height: 260px;
  }
}