/* 학습 사이트(카드 목록·상세). 색·글꼴 토큰은 styles.css의 :root를 그대로 쓴다. */

/* ---------- 메인: 머리말 ----------
   색·글꼴은 세금 계산기와 같게, 모양은 다르게: 화면 폭 전체의 모눈 배경 + 왼쪽 글 + 오른쪽 겹친 카드 */
.lhero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border-soft);
  background-image: linear-gradient(var(--border-soft) 1px, transparent 1px), linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 36px 36px; background-position: -1px -1px; }
.lhero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 80% at 22% 50%, #fff 35%, rgba(255,255,255,.55) 70%, rgba(255,255,255,0) 100%); }
.lhero > .wrap { position: relative; z-index: 1; padding-top: 56px; padding-bottom: 36px; }
.lslides { display: grid; }
.lslide { grid-area: 1 / 1; opacity: 0; visibility: hidden; transition: opacity .45s ease; }
.lslide.is-active { opacity: 1; visibility: visible; }
.lhero-inner { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 32px; min-height: 340px; }
.lhero-art { border: 1px solid var(--border); border-radius: 16px; background: #fff; padding: 12px 10px 6px; box-shadow: 0 14px 36px rgba(25,31,40,.10); transform: rotate(1.5deg); }
/* 2장: 세금 계산기 결과 화면 견본 */
.tax-peek { position: relative; display: grid; gap: 12px; padding: 18px; border: 1px solid var(--border); border-radius: 18px; background: #fff; box-shadow: 0 14px 36px rgba(25,31,40,.10); transform: rotate(1.5deg); }
.tax-peek .tier-card { padding: 20px 22px; }
.tax-peek .tier-name { font-size: 18px; }
.peek-sum { padding: 16px 18px; border: 1px solid var(--border); border-radius: 14px; }
.peek-sum > span { font-size: 13px; color: var(--text-3); }
.peek-sum > strong { display: block; margin-top: 2px; font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.peek-sum dl { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 10px 0 0; padding-top: 10px; border-top: 1px solid var(--border-soft); }
.peek-sum dt { font-size: 12px; color: var(--text-3); }
.peek-sum dd { margin: 2px 0 0; font-size: 15px; font-weight: 700; font-variant-numeric: tabular-nums; }
.peek-sum dd.loss { color: var(--loss); }
@media (max-width: 860px) { .tax-peek { transform: none; } }
.lhero-btn { margin-top: 22px; }
/* 슬라이드와 떨어진 세금 계산기 안내 띠 */
.tax-band { display: flex; align-items: center; gap: 14px; margin-top: 28px; padding: 14px 18px; border: 1px solid var(--border); border-radius: 14px; background: #fff; color: var(--text); text-decoration: none; box-shadow: 0 2px 10px rgba(25,31,40,.04); transition: border-color .15s, box-shadow .15s; }
.tax-band:hover { border-color: var(--brand); box-shadow: 0 6px 20px rgba(17,122,101,.10); color: var(--text); }
.tax-band-icon { flex: none; width: 42px; height: 42px; border-radius: 12px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; }
.tax-band-text { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.tax-band-text b { font-size: 16px; }
.tax-band-text span { font-size: 14px; color: var(--text-3); }
.tax-band-go { flex: none; display: inline-flex; align-items: center; gap: 2px; font-size: 14px; font-weight: 700; color: var(--brand); }
@media (max-width: 560px) { .tax-band { flex-wrap: wrap; } .tax-band-go { margin-left: 56px; } }
.lhero-foot { display: flex; align-items: center; justify-content: flex-end; gap: 16px; flex-wrap: wrap; margin-top: 28px; }
.lhero-ctrl { display: flex; align-items: center; gap: 8px; }
.ldots { display: flex; gap: 2px; margin-right: 6px; }
.ldots button { width: 32px; height: 32px; padding: 0; border: 0; background: none; cursor: pointer; display: grid; place-items: center; }
.ldots button span { display: block; height: 8px; width: 8px; border-radius: 4px; background: var(--dash); transition: width .2s ease; }
.ldots button[aria-current="true"] span { width: 24px; background: var(--text); }
@media (prefers-reduced-motion: reduce) { .lslide { transition: none; } }
.lhero h1 { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.25; letter-spacing: -0.035em; font-weight: 800; }
.lhero h1.long { font-size: clamp(28px, 3.3vw, 40px); line-height: 1.35; }
.lhero-sub { margin-top: 14px; font-size: 17px; color: var(--text-3); }
.lhero-cta { display: flex; gap: 10px; flex-wrap: wrap; }

/* 오른쪽: 학습 카드 3장을 살짝 기울여 겹쳐 놓기 */
.lhero-stack { position: relative; height: 340px; }
.mini { position: absolute; width: 62%; border: 1px solid var(--border); border-radius: 14px; background: #fff; box-shadow: 0 14px 36px rgba(25,31,40,.10); overflow: hidden; }
.mini-thumb { background: var(--surface-2); padding: 4px; border-bottom: 1px solid var(--border-soft); }
.mini-body { padding: 9px 12px 11px; font-size: 14px; font-weight: 700; color: var(--text); }
.mini-body span { margin-right: 6px; color: var(--brand); font-variant-numeric: tabular-nums; }
.mini:nth-child(1) { left: 0; top: 34px; transform: rotate(-6deg); }
.mini:nth-child(2) { left: 38%; top: 0; transform: rotate(4deg); z-index: 1; }
.mini:nth-child(3) { left: 20%; top: 150px; transform: rotate(-1.5deg); z-index: 2; }
@media (max-width: 860px) {
  .lhero-inner { grid-template-columns: 1fr; min-height: 0; }
  .lhero > .wrap { padding-top: 36px; padding-bottom: 28px; }
  .lhero-art { transform: none; }
  .lhero-stack { height: 270px; margin: 8px auto 0; width: min(100%, 420px); }
  .lhero::after { background: radial-gradient(ellipse 90% 60% at 30% 30%, #fff 40%, rgba(255,255,255,.6) 80%, rgba(255,255,255,0) 100%); }
}
@media (max-width: 560px) {
  .lhero-cta .btn { flex: 1 1 100%; }
  .lhero-stack { height: 300px; }
  .mini { width: 64%; }
  .mini:nth-child(3) { top: 120px; }
  .mini-body { font-size: 13px; padding: 7px 10px 9px; }
}


.chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: var(--surface-2); font-size: 13px; color: var(--text-2); }
.chip b { color: var(--text); }

/* ---------- 메인: 단계 선택 ---------- */
.stage-bar { position: sticky; top: 0; z-index: 5; background: var(--bg); border-bottom: 1px solid var(--border-soft); }
.stage-tabs { display: flex; gap: 6px; overflow-x: auto; padding: 12px 0; scrollbar-width: none; }
.stage-tabs::-webkit-scrollbar { display: none; }
.stage-tab { flex: none; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; background: #fff; font: inherit; font-size: 14px; font-weight: 500; color: var(--text-2); cursor: pointer; white-space: nowrap; }
.stage-tab:hover { color: var(--text); border-color: var(--dash); }
.stage-tab[aria-pressed="true"] { background: var(--text); border-color: var(--text); color: #fff; }
.stage-tab .n { margin-right: 4px; font-variant-numeric: tabular-nums; opacity: .7; }
.regime-row { display: flex; gap: 6px; padding: 0 0 12px; flex-wrap: wrap; }
.regime-row[hidden] { display: none; }
.regime-btn { padding: 5px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; font: inherit; font-size: 13px; color: var(--text-2); cursor: pointer; }
.regime-btn[aria-pressed="true"] { border-color: var(--brand); color: var(--brand); font-weight: 700; background: var(--brand-tint); }

/* ---------- 메인: 단계 묶음 + 카드 격자 ---------- */
.stage-sec { padding: 36px 0 8px; }
.stage-sec[hidden] { display: none; }
.stage-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.stage-head h2 { font-size: 22px; }
.stage-head h2 .n { color: var(--brand); margin-right: 6px; }
.stage-head p { font-size: 14px; color: var(--text-3); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 900px) { .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .card-grid { grid-template-columns: 1fr; } }

.lcard { position: relative; display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; color: inherit; text-decoration: none; overflow: hidden; transition: border-color .15s, box-shadow .15s, transform .15s; }
a.lcard:hover { border-color: var(--dash); box-shadow: 0 6px 20px rgba(25, 31, 40, .07); transform: translateY(-2px); color: inherit; }
.lcard-thumb { position: relative; aspect-ratio: 16 / 10; background: var(--surface-2); border-bottom: 1px solid var(--border-soft); display: grid; place-items: center; padding: 6px 4px; }
.lcard-thumb > div { width: 100%; }
.lcard-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.lcard-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-3); }
.lcard-meta .stars { margin-left: 2px; }
.lesson-meta .stars { margin-left: 6px; }
.lcard-meta .id { font-weight: 700; color: var(--brand); font-variant-numeric: tabular-nums; }
.lcard h3 { font-size: 17px; line-height: 1.4; }
.lcard p { font-size: 14px; color: var(--text-2); line-height: 1.5; }
.lcard-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 6px; }
.tag { padding: 2px 7px; border: 1px solid var(--dash); border-radius: 4px; font-size: 12px; font-weight: 600; background: #fff; color: var(--text); }
.tag.up, .tag.down, .tag.side, .tag.turn { border-color: transparent; color: #fff; font-weight: 700; }
.tag.up { background: #16A34A; }
.tag.down { background: #D93636; }
.tag.side { background: #4E5968; }
.tag.turn { background: #E67E00; }
.lcard.soon { cursor: default; }
/* 단계별 필수 카드: 왼쪽 위 모서리 대각선 띠 */
.ribbon { position: absolute; top: 14px; left: -30px; z-index: 2; width: 108px; padding: 3px 0; transform: rotate(-45deg); background: var(--text); color: #fff; font-size: 12px; font-weight: 700; text-align: center; pointer-events: none; }
.lcard.soon .lcard-thumb > div { opacity: .5; }
.soon-badge { position: absolute; top: 10px; right: 10px; padding: 4px 10px; border-radius: 8px; background: var(--text); color: #fff; font-size: 12px; font-weight: 700; letter-spacing: .02em; }

/* ---------- 상세 ---------- */
.lesson { max-width: 780px; margin: 0 auto; padding: 32px 20px 72px; }
.crumb { display: flex; gap: 6px; flex-wrap: wrap; font-size: 13px; color: var(--text-3); }
.crumb a { color: var(--text-3); text-decoration: none; }
.crumb a:hover { color: var(--text); }
.lesson h1 { margin-top: 14px; font-size: 32px; line-height: 1.3; letter-spacing: -0.03em; }
.lesson-meta { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.tldr { margin-top: 22px; padding: 16px 18px; border-radius: 14px; background: var(--brand-tint); border: 1px solid var(--brand-soft); }
.tldr strong { display: block; font-size: 13px; color: var(--brand); margin-bottom: 4px; }
.tldr p { font-size: 16px; color: var(--text); }
.lesson h2 { margin-top: 44px; font-size: 22px; }
.lesson h2 .kicker { display: block; font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: 0; margin-bottom: 4px; }
.lesson h3 { margin-top: 28px; font-size: 18px; }
.lesson p, .lesson li { font-size: 16px; color: var(--text-2); }
.lesson p { margin-top: 10px; }
.lesson b { color: var(--text); }
.lesson ul, .lesson ol { margin: 10px 0 0; padding-left: 20px; display: grid; gap: 6px; }
.lesson a { color: var(--brand); }
.fig { margin: 18px 0 0; padding: 14px 14px 10px; border: 1px solid var(--border); border-radius: 14px; background: #fff; }
.fig figcaption { margin-top: 8px; font-size: 13px; color: var(--text-3); text-align: center; }
.fig-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
.fig-row .fig { margin: 0; }
@media (max-width: 640px) { .fig-row { grid-template-columns: 1fr; } .lesson h1 { font-size: 26px; } }
.ltable { width: 100%; margin-top: 14px; border-collapse: collapse; font-size: 15px; }
.ltable th, .ltable td { padding: 10px 12px; border-bottom: 1px solid var(--border-soft); text-align: left; vertical-align: top; color: var(--text-2); }
.ltable thead th { background: var(--surface-2); color: var(--text); font-weight: 700; font-size: 14px; }
.ltable td b { color: var(--text); }
.mistakes { list-style: none; padding: 12px 16px 13px 18px !important; gap: 8px !important; margin-top: 14px !important; }
.mistakes li { color: var(--text-2); }
/* 안내 상자: 왼쪽 색 띠 + 맨 위 글자 이름표. 파랑 = 알아 두기, 노랑 = 주의, 빨강 = 위험, 초록 = 확인 */
.callout, .mistakes { --bar: #2F7BF5; --tint: #F4F8FF; --label: "알아 두기"; --ink: #1F5FC4;
  position: relative; margin-top: 16px; padding: 12px 16px 13px 18px; border-left: 4px solid var(--bar); border-radius: 4px 10px 10px 4px; background: var(--tint); font-size: 15px; color: var(--text); }
.callout::before, .mistakes::before { content: var(--label); display: block; margin-bottom: 4px; font-size: 12px; font-weight: 800; letter-spacing: .02em; color: var(--ink); }
.callout b { color: var(--text); }
.callout.warn, .mistakes { --bar: #E6A700; --tint: #FFFBEB; --label: "주의"; --ink: #8A6100; }
.callout.danger { --bar: #D93636; --tint: #FEF5F5; --label: "위험"; --ink: #B42323; }
.callout.ok { --bar: #3E9B4F; --tint: #F3FAF4; --label: "확인"; --ink: #2B7A3A; }
/* 알아 두면 좋은 것: 패널 없이 본문과 같은 모양. 제목 앞에만 파란 i */
.extra { margin-top: 44px; }
.extra h2 { margin-top: 0 !important; padding-left: 12px; border-left: 4px solid #2F7BF5; line-height: 1.3; }
.extra dl { margin: 14px 0 0; display: grid; gap: 14px; }
.extra dt { font-weight: 700; color: var(--text); font-size: 16px; }
.extra dd { margin: 4px 0 0; font-size: 16px; color: var(--text-2); }
.pager { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 48px; }
.pager a { display: inline-flex; align-items: center; gap: 6px; min-height: 42px; padding: 0 16px; border: 1.5px solid var(--brand); border-radius: 10px; font-size: 14px; font-weight: 700; text-decoration: none; color: var(--brand); background: #fff; }
.pager a:hover { background: var(--brand-tint); color: var(--brand); }
.pager a.next { background: var(--brand); color: #fff; }
.pager a.next:hover { background: var(--brand-hover); color: #fff; }
.pager span { display: inline-flex; align-items: center; min-height: 42px; padding: 0 16px; border: 1.5px dashed var(--border); border-radius: 10px; font-size: 14px; color: var(--text-3); }
.pager small { font-weight: 500; opacity: .8; }
/* 이전·다음 버튼과 "함께 보면 좋은 카드" 사이. 광고 자리(높이 100px)는 광고를 끈 상태에서도 빈 공간으로 남고,
   body.ads-on이면 그 자리에 광고 칸이 보인다. 아래 구분선으로 학습 내용과 나눈다. */
.learn-ad { display: grid; place-items: center; min-height: 100px; margin-top: 48px; border: 1px dashed transparent; border-radius: 10px; font-size: 13px; color: transparent; }
body.ads-on .learn-ad { border-color: var(--dash); background: var(--surface-2); color: var(--text-3); }
.learn-split { margin-top: 48px; border-top: 1px solid var(--border); }
.related { margin-top: 40px; }
.related h2 { font-size: 18px !important; margin-top: 0 !important; }
.related .card-grid { margin-top: 12px; }
.disclaim { margin-top: 36px; font-size: 13px; color: var(--text-3); }

/* ---------- 하단 ---------- */
.lfoot { margin-top: 56px; padding: 28px 0 40px; border-top: 1px solid var(--border-soft); font-size: 13px; color: var(--text-3); text-align: center; }
.lfoot .footer-brand { margin-bottom: 14px; }
.lfoot nav { display: flex; justify-content: center; gap: 4px 16px; flex-wrap: wrap; margin-bottom: 10px; }
.lfoot a { color: var(--text-2); text-decoration: none; }
.lfoot a:hover { color: var(--text); text-decoration: underline; }
.lesson a.lcard { color: var(--text); text-decoration: none; }