:root {
  --ink: #1a1f1c;
  --muted: #5c6560;
  --line: #d8ddd9;
  --paper: #f7f5f0;
  --accent: #0d5c4d;
  --chip: #e8f0ed;
  --row: #f4f6f4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 10% 0%, #e4ece8 0%, transparent 45%),
    radial-gradient(ellipse at 90% 100%, #efe8dc 0%, transparent 40%),
    var(--paper);
  line-height: 1.55;
}

.page {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.kicker {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 4vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 1rem;
}

.lead strong,
.intro strong,
.check-card__help strong {
  color: var(--accent);
  font-weight: 700;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.75rem;
}

.chip {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: var(--chip);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1.2rem;
  margin: 0 0 1rem;
}

.card h2 { margin: 0 0 0.55rem; font-size: 1rem; }
.card p, .card ul { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card ul { padding-left: 1.15rem; }
.card li + li { margin-top: 0.35rem; }

.diff { display: grid; gap: 0.75rem; }
@media (min-width: 560px) {
  .diff { grid-template-columns: 1fr 1fr; }
}
.diff .card { margin: 0; }
.diff .card strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--accent);
}

.intro {
  margin: 0 0 1.25rem;
  padding: 1rem 1.1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}
.intro p { margin: 0; }
.intro p + p { margin-top: 0.65rem; }

.kit {
  margin: 0 0 1.25rem;
  padding: 0.95rem 1.1rem 1.1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.kit h2 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: var(--accent);
}
.kit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 520px) {
  .kit-grid { grid-template-columns: 1fr 1fr; }
}
.kit-card {
  margin: 0;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--row);
}
.kit-card strong {
  display: block;
  margin: 0 0 0.2rem;
  font-size: 0.9rem;
  color: var(--accent);
}
.kit-card span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}
.kit-card a {
  color: var(--accent);
  text-decoration: none;
}
.kit-card a:hover { text-decoration: underline; }

.checks { list-style: none; margin: 0; padding: 0; }

.check-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1rem 0.85rem;
  margin: 0 0 0.75rem;
}

.check-card__do {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.65rem;
  align-items: start;
  margin: 0 0 0.55rem;
}
.check-card__do input[type="checkbox"] {
  margin-top: 0.2rem;
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}
.check-card__do .action {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}
.check-card__do .guide {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  padding-top: 0.2rem;
}
.check-card__do .guide:hover { text-decoration: underline; }

.check-card__help {
  margin: 0 0 0.7rem;
  padding: 0 0 0 1.75rem;
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.6;
}
.check-card__help p { margin: 0; }
.check-card__help p + p { margin-top: 0.55rem; }

.check-card__rows {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0.65rem 0.7rem;
  background: var(--row);
  border-radius: 8px;
}
.check-card__rows a { color: var(--accent); font-weight: 600; }

.check-card__bring,
.check-card__if {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.5rem;
  align-items: start;
}
.check-card__bring > b,
.check-card__if > b {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  padding-top: 0.35rem;
}

.bring-list,
.if-list {
  display: grid;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 520px) {
  .bring-list { grid-template-columns: 1fr 1fr; }
}
.bring-list li,
.if-list li {
  margin: 0;
  padding: 0.5rem 0.6rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--ink);
}
.bring-list strong {
  display: block;
  margin-bottom: 0.12rem;
  font-size: 0.86rem;
  color: var(--accent);
}
.bring-list span {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
}
.if-list .case {
  display: block;
  margin-bottom: 0.15rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
}
.if-list .then { color: var(--muted); }

h2.section-head {
  margin: 1.5rem 0 0.75rem;
  padding: 0.45rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: #eef6f3;
  border-radius: 8px;
  border: 1px solid #c5d9d2;
}
.section-head--opt {
  color: #5a635c;
  background: #f3f1ec;
  border-color: var(--line);
}
.disclaimer {
  margin: 1.5rem 0 0;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent);
  background: #fff;
  color: var(--muted);
  font-size: 0.85rem;
}

.notice {
  margin: 0 0 1.25rem;
  padding: 0.95rem 1.05rem;
  border-radius: 12px;
  border: 1px solid #c5d9d2;
  border-left: 4px solid var(--accent);
  background: #eef6f3;
}

.notice__label {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.notice ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink);
  font-size: 0.9rem;
}

.notice li + li {
  margin-top: 0.35rem;
}

.notice strong {
  color: var(--accent);
}

.pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}
.pager a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.pager a:hover { text-decoration: underline; }
.pager .disabled {
  color: #c5cbc6;
  pointer-events: none;
}

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.flow::before {
  content: "";
  position: absolute;
  left: 1.15rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: var(--line);
}

.flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.75rem;
  margin: 0 0 0.75rem;
  align-items: stretch;
}

.flow-step__dot {
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  z-index: 1;
  line-height: 1.1;
  text-align: center;
  padding: 0.15rem;
}

.flow-step__card {
  margin: 0;
  padding: 0.85rem 0.95rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.flow-step__card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.5;
}

.flow-step__card .goal {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: var(--ink);
}

.flow-step__card .goal strong {
  color: var(--accent);
}

.flow-step--later .flow-step__dot {
  background: #3d4a42;
}

/* —— 왼쪽 목차 (화면만, PDF/인쇄 제외) —— */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 11.5rem;
  z-index: 50;
  padding: 1.1rem 0.75rem 1.5rem;
  overflow-y: auto;
  background: rgba(255, 255, 255, 0.94);
  border-right: 1px solid var(--line);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.side-nav__brand {
  margin: 0 0.4rem 0.85rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.side-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-nav__list a {
  display: block;
  padding: 0.38rem 0.55rem;
  border-radius: 8px;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.82rem;
  line-height: 1.35;
}

.side-nav__list a:hover {
  background: var(--chip);
  color: var(--accent);
}

.side-nav__list a.is-current {
  background: var(--chip);
  color: var(--accent);
  font-weight: 700;
}

.side-nav__list a.is-stub {
  color: var(--muted);
  opacity: 0.75;
}

.side-nav__fab {
  display: none;
  position: fixed;
  left: 0.75rem;
  bottom: 0.75rem;
  z-index: 60;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: inherit;
  box-shadow: 0 4px 16px rgba(26, 31, 28, 0.12);
  cursor: pointer;
}

body.has-side-nav .page {
  margin-left: max(0px, calc((100vw - 40rem) / 2 - 1.25rem));
  padding-left: 1.25rem;
}

@media (min-width: 900px) {
  body.has-side-nav .page {
    margin-left: 12.5rem;
    margin-right: auto;
    max-width: 40rem;
  }
}

@media (max-width: 899px) {
  .side-nav {
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    box-shadow: 4px 0 24px rgba(26, 31, 28, 0.12);
  }

  .side-nav.is-open {
    transform: translateX(0);
  }

  .side-nav__fab {
    display: inline-flex;
    align-items: center;
  }

  body.has-side-nav .page {
    margin-left: auto;
  }
}

.compare {
  margin: 0 0 1.75rem;
  padding: 1rem 1rem 1.1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.compare h2 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  color: var(--accent);
}

.compare .compare-note {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

.compare-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 -0.15rem;
}

.compare-table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  font-size: 0.8rem;
  line-height: 1.4;
}

.compare-table th,
.compare-table td {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.compare-table th {
  background: var(--row);
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

.compare-table td:first-child,
.compare-table th:first-child {
  font-weight: 700;
  white-space: nowrap;
}

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

.preview-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1rem;
  padding: 0.65rem 1rem;
  background: rgba(247, 245, 240, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.preview-bar__langs,
.preview-bar__pages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.preview-bar a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
}

.preview-bar a.is-current {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.preview-bar__langs a:not(.is-current) {
  background: #e8f0ed;
}

.flow-step__card h2 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.flow-step__card h2 a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.preview-locked {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  color: var(--ink);
  font-weight: 700;
}

.preview-locked__badge {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  background: #efe0c8;
  color: #6b4a12;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.preview-open__badge {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  background: #d7efe7;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
}

.waitlist-form {
  margin: 1.75rem 0 0.5rem;
  padding: 1.1rem 1rem 1.15rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.waitlist-form__title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--accent);
}

.waitlist-form__hint {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.45;
}

.waitlist-form__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.waitlist-form__email {
  flex: 1 1 12rem;
  min-width: 0;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.95rem;
}

.waitlist-form__btn {
  flex: 0 0 auto;
  padding: 0.65rem 1rem;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
}

.waitlist-form__btn:disabled {
  opacity: 0.65;
  cursor: wait;
}

.waitlist-form__msg {
  margin: 0.65rem 0 0;
  font-size: 0.85rem;
  font-weight: 600;
}

.waitlist-form__msg.is-ok { color: var(--accent); }
.waitlist-form__msg.is-err { color: #a33; }

.waitlist-form__hp {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

@media print {
  body { background: #fff; }
  .page { padding: 0; margin: 0 auto !important; max-width: none; }
  .check-card, .card, .kit, .disclaimer, .flow-step__card, .compare { break-inside: avoid; }
  .pager { display: none; }
  .side-nav,
  .side-nav__fab,
  .preview-bar,
  .no-print { display: none !important; }
}