:root {
  --ink: #172033;
  --ink-soft: #526078;
  --paper: #f7f3eb;
  --paper-deep: #eee7dc;
  --card: #fffdf8;
  --line: #d9d1c4;
  --accent: #ed6a3a;
  --accent-dark: #b9411b;
  --accent-soft: #f9dfd3;
  --mint: #cde8dd;
  --mint-dark: #285f50;
  --navy: #1d2e4a;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(31, 39, 54, 0.09);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(23, 32, 51, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 32, 51, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  word-break: keep-all;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--white);
  background: var(--navy);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(217, 209, 196, 0.85);
  background: rgba(247, 243, 235, 0.92);
  backdrop-filter: blur(16px);
}

.nav-shell,
.shell {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.nav-shell {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 12px 12px 5px 12px;
  color: var(--white);
  background: var(--accent);
  box-shadow: 3px 3px 0 var(--ink);
  font-size: 13px;
  letter-spacing: -0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--accent-dark);
}

.hero {
  padding: 88px 0 68px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(290px, 0.65fr);
  align-items: center;
  gap: 72px;
}

.eyebrow,
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.eyebrow {
  padding: 8px 12px;
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.eyebrow::before,
.status-chip::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.18;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(46px, 7.2vw, 82px);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4.5vw, 48px);
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.hero-copy {
  max-width: 720px;
  margin: 0 0 34px;
  color: var(--ink-soft);
  font-size: clamp(18px, 2.2vw, 22px);
}

.hero-actions,
.support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 2px solid var(--ink);
  border-radius: 12px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--ink);
  box-shadow: 4px 4px 0 var(--accent);
}

.button-secondary {
  background: var(--card);
  box-shadow: 4px 4px 0 var(--paper-deep);
}

.hero-note {
  position: relative;
  padding: 30px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg) var(--radius-lg) 8px var(--radius-lg);
  background: var(--card);
  box-shadow: 10px 10px 0 var(--mint);
  transform: rotate(1.5deg);
}

.hero-note::before {
  position: absolute;
  top: -14px;
  right: 28px;
  width: 74px;
  height: 26px;
  background: rgba(237, 106, 58, 0.22);
  content: "";
  transform: rotate(-4deg);
}

.hero-note .question {
  margin: 0 0 22px;
  color: var(--ink-soft);
  font-size: 15px;
}

.hero-note .answer {
  margin: 0;
  font-size: 23px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.03em;
}

.hero-note .annotation {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  color: var(--mint-dark);
  font-size: 13px;
  font-weight: 800;
}

.section {
  padding: 76px 0;
}

.section-muted {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(238, 231, 220, 0.6);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 38px;
}

.section-heading p,
.lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.info-card,
.prompt-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
  box-shadow: var(--shadow);
}

.feature-card {
  padding: 28px;
}

.card-number {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-bottom: 34px;
  border-radius: 50%;
  color: var(--white);
  background: var(--navy);
  font-size: 14px;
  font-weight: 900;
}

.feature-card:nth-child(2) .card-number {
  background: var(--accent);
}

.feature-card:nth-child(3) .card-number {
  color: var(--mint-dark);
  background: var(--mint);
}

.feature-card p,
.info-card p {
  margin: 0;
  color: var(--ink-soft);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-list li {
  position: relative;
  padding: 28px 24px 24px;
  border-top: 3px solid var(--ink);
}

.step-list strong {
  display: block;
  margin-bottom: 8px;
  font-size: 19px;
}

.step-list span {
  color: var(--ink-soft);
}

.plan-mode-notice {
  margin-top: 28px;
}

.prompt-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.prompt-card {
  position: relative;
  margin: 0;
  padding: 26px 28px 26px 54px;
  font-size: 17px;
  font-weight: 700;
}

.prompt-card::before {
  position: absolute;
  top: 17px;
  left: 22px;
  color: var(--accent);
  content: "“";
  font-family: Georgia, serif;
  font-size: 42px;
  line-height: 1;
}

.privacy-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 44px;
  padding: 42px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  background: var(--navy);
  color: var(--white);
  box-shadow: 10px 10px 0 var(--accent-soft);
}

.privacy-panel h2 {
  margin: 0;
}

.privacy-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.privacy-list li {
  display: flex;
  gap: 12px;
  color: #e3e9f2;
}

.privacy-list li::before {
  color: var(--mint);
  content: "✓";
  font-weight: 900;
}

.privacy-panel a {
  color: var(--mint);
  font-weight: 800;
}

.site-footer {
  padding: 38px 0 48px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: end;
}

.footer-title {
  margin: 0 0 4px;
  font-weight: 900;
}

.footer-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
}

.legal-hero {
  padding: 72px 0 44px;
}

.legal-hero h1 {
  max-width: none;
  margin: 16px 0 20px;
  font-size: clamp(42px, 7vw, 68px);
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  color: var(--ink-soft);
  font-size: 14px;
}

.legal-layout {
  display: grid;
  grid-template-columns: minmax(190px, 0.28fr) minmax(0, 0.72fr);
  align-items: start;
  gap: 48px;
  padding-bottom: 88px;
}

.toc {
  position: sticky;
  top: 100px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 253, 248, 0.9);
}

.toc strong {
  display: block;
  margin-bottom: 12px;
  font-size: 14px;
}

.toc ol {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
  color: var(--ink-soft);
  font-size: 13px;
}

.toc a {
  text-decoration: none;
}

.legal-content {
  padding: 4px 0;
}

.legal-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.legal-section:first-child {
  padding-top: 0;
}

.legal-section h2 {
  margin-bottom: 16px;
  font-size: 28px;
}

.legal-section h3 {
  margin-top: 24px;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.legal-section p:last-child,
.legal-section ul:last-child {
  margin-bottom: 0;
}

.legal-section p,
.legal-section li {
  color: var(--ink-soft);
}

.legal-section li + li {
  margin-top: 8px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 6px 0 14px;
}

.summary-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
}

.summary-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

.summary-card span {
  color: var(--ink-soft);
  font-size: 14px;
}

.notice {
  padding: 20px 22px;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--accent-soft);
}

.notice p {
  margin: 0;
  color: var(--ink);
}

.data-table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  width: 24%;
  color: var(--ink);
  background: var(--paper-deep);
  font-size: 14px;
}

.data-table td {
  color: var(--ink-soft);
  font-size: 14px;
}

.support-hero-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 36px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: 9px 9px 0 var(--mint);
}

.support-hero-card h2 {
  margin-bottom: 10px;
  font-size: 30px;
}

.support-hero-card p {
  margin: 0;
  color: var(--ink-soft);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.support-main {
  padding-bottom: 88px;
}

.info-card {
  padding: 28px;
}

.clean-list {
  margin: 0;
  padding-left: 20px;
  color: var(--ink-soft);
}

.clean-list li + li {
  margin-top: 8px;
}

@media (max-width: 860px) {
  .hero-grid,
  .privacy-panel,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .step-list,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 52px;
  }

  .hero-note {
    max-width: 520px;
  }

  .toc {
    position: static;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 680px) {
  .nav-shell,
  .shell {
    width: min(calc(100% - 28px), var(--content));
  }

  .nav-shell {
    min-height: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
    padding: 14px 0;
  }

  .nav-links {
    width: 100%;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
    white-space: nowrap;
  }

  .hero,
  .legal-hero {
    padding-top: 56px;
  }

  .hero {
    padding-bottom: 54px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 58px);
  }

  .section {
    padding: 58px 0;
  }

  .prompt-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .privacy-panel,
  .support-hero-card {
    padding: 28px 22px;
  }

  .support-hero-card {
    grid-template-columns: 1fr;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table tr:not(:last-child) {
    border-bottom: 1px solid var(--line);
  }

  .data-table th,
  .data-table td {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}