/*
  퇴사 날짜별로 비교하는 퇴직금 계산기 — 화면 스타일 (2026-10-27 전면 개편)
  시각 언어: "급여 장부". 미색 장부 종이 위에 먹색 숫자, 굵은 머리 괘선과 겹줄,
  인주색(주홍)은 손해·도장에만, 셈 초록은 이득에만, 형광펜 노랑은 '가장 많은 날' 한 곳에만 쓴다.
  둥근 카드·그림자·그라데이션 없음. 모서리는 각지게(2px 이하), 구분은 괘선으로.
  공통 /assets/common/v2/base.css 위에 덧입힌다. 글자 최소 14px(그래프 눈금 SVG만 13px).
  대비(WCAG, 바탕 --sheet 기준 스크립트 실측): 작업 보고에 표로 남김.
*/
:root {
  --paper: #f1eee6;      /* 장부 종이 */
  --sheet: #faf8f3;      /* 장부 낱장(그래프 판) */
  --ink: #16181b;
  --ink-2: #3f4247;
  --ink-3: #4b4e53;
  --line: #d9d4c7;       /* 장식 괘선 */
  --rule-ui: #6b6860;    /* 입력 밑줄·선택지 테두리 */
  --rule: #16181b;       /* 머리 괘선 */
  --sem: #1c6650;        /* 셈 초록: 이득·가장 많은 날 */
  --on-sem: #ffffff;
  --stamp: #9c2814;      /* 인주: 줄어드는 날·손해 */
  --stamp-tint: rgb(156 40 20 / .10);
  --mark: #f3dc5c;       /* 형광펜 */
  --mark-ink: #16181b;
  --accent: var(--ink); --accent-ink: var(--sheet); --focus: var(--ink); --paper-2: var(--sheet);
  --warn: var(--stamp);
  --font: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", "Noto Sans CJK KR", "Malgun Gothic", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "Menlo", "Consolas", "D2Coding", monospace;
  --gutter: 16px; --nav-h: 56px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111316; --sheet: #181b1f; --ink: #edebe4; --ink-2: #c4c2bb; --ink-3: #b3b1aa;
    --line: #2d3137; --rule-ui: #8e8c86; --rule: #edebe4;
    --sem: #7fc9a9; --on-sem: #0d1a14; --stamp: #ff8c73; --stamp-tint: rgb(255 140 115 / .14);
    --mark: #f0d958; --mark-ink: #16181b;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111316; --sheet: #181b1f; --ink: #edebe4; --ink-2: #c4c2bb; --ink-3: #b3b1aa;
  --line: #2d3137; --rule-ui: #8e8c86; --rule: #edebe4;
  --sem: #7fc9a9; --on-sem: #0d1a14; --stamp: #ff8c73; --stamp-tint: rgb(255 140 115 / .14);
  --mark: #f0d958; --mark-ink: #16181b; color-scheme: dark;
}
@media (min-width: 960px) { :root { --gutter: 32px; --nav-h: 64px; } }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }
body { background: var(--paper); color: var(--ink); font: 400 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1, h2, h3, p, ul, ol, dl, dd, fieldset, legend { margin: 0; padding: 0; }
fieldset { border: 0; min-width: 0; }
ul, ol { list-style: none; }
svg { max-width: none; }
button { font: inherit; color: inherit; }
.num { font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
.vh { position: absolute !important; width: 1px !important; height: 1px !important; margin: -1px !important; overflow: hidden !important; clip: rect(0 0 0 0); white-space: nowrap; border: 0 !important; padding: 0 !important; }
.skip:focus { position: fixed !important; top: 8px; left: 8px; width: auto !important; height: auto !important; clip: auto; z-index: 30; padding: 8px 16px !important; background: var(--sheet); border: 2px solid var(--ink) !important; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- 상단 ---------- */
.nav { position: sticky; top: 0; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--line); }
.nav .wrap { height: var(--nav-h); display: flex; align-items: center; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); min-height: 44px; }
.logo svg { width: 28px; height: 28px; flex: none; }
.logo-sem { font-size: 20px; font-weight: 800; letter-spacing: -0.04em; }
.logo-svc { font-size: 15px; font-weight: 600; color: var(--ink-2); padding-left: 10px; border-left: 1px solid var(--rule-ui); line-height: 1.1; }
.logo:hover { color: var(--ink); }
.nav-menu { margin-left: auto; display: flex; gap: 4px; }
.nav-menu a { font-size: 15px; color: var(--ink-2); text-decoration: none; padding: 8px 12px; }
.nav-menu a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 6px; }
.nav-toggle, .nav-panel { display: none; }
@media (max-width: 959px) {
  .nav.is-js .nav-menu { display: none; }
  .nav:not(.is-js) .nav-menu a { padding: 8px 6px; font-size: 14px; }
  .nav:not(.is-js) .logo-svc { display: none; }
  .nav-toggle { display: inline-grid; place-items: center; margin-left: auto; margin-right: -10px; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; color: var(--ink); cursor: pointer; }
  .nav-toggle svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: square; }
  .nav-toggle .i-close, .nav-toggle[aria-expanded="true"] .i-open { display: none; }
  .nav-toggle[aria-expanded="true"] .i-close { display: block; }
  .nav.is-open::after { content: ""; position: absolute; left: 0; right: 0; top: 100%; height: 100vh; background: rgb(10 12 14 / .4); z-index: -1; }
  .nav-panel { display: block; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 2px solid var(--rule); }
  .nav .nav-panel .wrap { display: block; height: auto; padding-top: 4px; padding-bottom: 12px; }
  .np-item { display: flex; align-items: center; min-height: 52px; font-size: 17px; font-weight: 600; text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--line); }
}

/* ---------- 첫 화면 ---------- */
.hero { padding: 16px 0 40px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; grid-template-areas: "head" "sheet" "calc"; }
.hero-head { grid-area: head; }
.sheet { grid-area: sheet; }
.calc { grid-area: calc; }
h1 { font-size: 29px; line-height: 1.22; font-weight: 800; letter-spacing: -0.045em; margin: 0; word-break: keep-all; }
.lead { margin-top: 10px; font-size: 16px; line-height: 1.5; color: var(--ink-2); max-width: 30em; }
.seal { display: none; }

@media (min-width: 960px) {
  .hero { padding: 44px 0 72px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) 360px; column-gap: 48px; row-gap: 28px; grid-template-areas: "head head" "sheet calc"; align-items: start; }
  .hero-head { display: grid; grid-template-columns: minmax(0, 1fr) 360px; column-gap: 48px; align-items: end; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
  h1 { font-size: 46px; line-height: 1.12; }
  .lead { margin: 0; font-size: 17px; }
  .seal { display: flex; align-items: center; gap: 8px; margin-top: 10px; font-size: 14px; font-weight: 600; color: var(--sem); }
  .seal svg { width: 18px; height: 18px; flex: none; }
}

/* ---------- 장부 낱장: 그래프 ---------- */
.sheet { position: relative; background: var(--sheet); border-top: 3px solid var(--rule); padding: 0 14px 14px; margin: 0 calc(var(--gutter) * -1 + 4px); }
@media (min-width: 600px) { .sheet { margin: 0; padding: 0 22px 18px; } }
.sheet::before { content: ""; position: absolute; left: 0; right: 0; top: 2px; border-top: 1px solid var(--rule); }
.sheet-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0 8px; }
.sheet-title { font-size: 14px; font-weight: 700; color: var(--ink-2); }
.sheet-tag { font: 700 14px/1 var(--mono); letter-spacing: .08em; color: var(--stamp); border: 2px solid currentColor; padding: 5px 9px 4px; transform: rotate(-4deg); }
.sheet[data-mode="mine"] .sheet-tag { color: var(--sem); transform: rotate(0); letter-spacing: 0; font-family: var(--font); }
.sheet[data-mode="dc"] .sheet-tag { color: var(--ink-2); transform: none; font-family: var(--font); letter-spacing: 0; }

.read { padding-bottom: 2px; min-height: 88px; }
.read-date { font-size: 15px; color: var(--ink-2); }
.read-date b { font: 700 15px/1.4 var(--font); color: var(--ink); }
.read-amt { display: flex; align-items: baseline; gap: 4px; margin-top: 0; line-height: 1.1; }
.read-amt b { font-size: 40px; font-weight: 800; letter-spacing: -0.035em; }
.read-amt span { font-size: 18px; font-weight: 700; }
.read-diff { margin-top: 4px; font-size: 15px; font-weight: 700; min-height: 1.5em; color: var(--ink-2); }
.read-diff.up { color: var(--sem); }
.read-diff.down { color: var(--stamp); }
.read-diff.plan { color: var(--ink); }
.read.is-drop .read-amt b { color: var(--stamp); }
.sheet[data-mode="example"] .read-amt b { color: var(--ink); }
@media (min-width: 960px) { .read-amt b { font-size: 56px; } .read { min-height: 120px; } }

.plot { position: relative; height: 236px; margin-top: 6px; touch-action: pan-y; cursor: crosshair; user-select: none; -webkit-user-select: none; outline-offset: 4px; }
@media (min-width: 960px) { .plot { height: 340px; } }
.plot svg { display: block; overflow: visible; }
.sheet[data-mode="dc"] .read, .sheet[data-mode="dc"] .plot, .sheet[data-mode="dc"] .key, .sheet[data-mode="dc"] .sheet-cap { display: none; }

.g-grid line { stroke: var(--line); stroke-width: 1; }
.g-grid .g-mline { stroke: var(--line); stroke-dasharray: 2 3; }
.g-tick { font: 500 13px var(--font); fill: var(--ink-3); font-variant-numeric: tabular-nums; }
.g-month { font: 600 13px var(--font); fill: var(--ink-2); }
.g-base { stroke: var(--ink); stroke-width: 1; }
.g-line { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.g-drop { fill: none; stroke: var(--stamp); stroke-width: 3; stroke-linecap: round; }
.g-zero { fill: none; stroke: var(--ink-3); stroke-width: 2; stroke-dasharray: 2 4; }
.g-band rect { fill: var(--stamp); }
.g-plan line { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 4 3; }
.g-plan-box { fill: var(--sheet); stroke: var(--ink); stroke-width: 1.5; }
.g-plan-txt { font: 700 13px var(--font); fill: var(--ink); }
.g-plan-dot { fill: var(--sheet); stroke: var(--ink); stroke-width: 2; }
.g-star { fill: var(--sem); stroke: var(--sheet); stroke-width: 2.5; }
.g-cur line { stroke: var(--ink-2); stroke-width: 1; }
.g-cur circle { fill: var(--ink); stroke: var(--sheet); stroke-width: 2.5; }
.g-cur.is-drop circle { fill: var(--stamp); }

/* 가장 많은 날 형광펜 쪽지 */
.callout { position: absolute; z-index: 2; max-width: 240px; padding: 6px 10px 7px; background: var(--mark); color: var(--mark-ink); font-size: 14px; line-height: 1.4; pointer-events: none; }
.callout b { display: block; font-weight: 800; font-size: 15px; letter-spacing: -0.02em; white-space: nowrap; }
.callout span { display: block; }
.callout::after { content: ""; position: absolute; left: var(--tip, 50%); bottom: -7px; margin-left: -7px; border: 7px solid transparent; border-bottom: 0; border-top-color: var(--mark); }
.callout.below::after { bottom: auto; top: -7px; border-top: 0; border-bottom: 7px solid var(--mark); }
@media (prefers-reduced-motion: no-preference) {
  .callout { animation: mark-in .5s .9s both cubic-bezier(.2,.7,.2,1); }
  @keyframes mark-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
}

.key { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 10px; font-size: 14px; color: var(--ink-2); }
.key li { display: inline-flex; align-items: center; gap: 7px; }
.key li::before { content: ""; flex: none; }
.k-best::before { width: 11px; height: 11px; border-radius: 50%; background: var(--sem); }
.k-drop::before { width: 16px; height: 4px; background: var(--stamp); }
.k-plan::before { width: 0; height: 14px; border-left: 1.5px dashed var(--ink); }
.sheet-cap { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.5; color: var(--ink-2); }

.dc { padding: 8px 0 6px; }
.dc-h { font-size: 20px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 8px; }
.dc p + p { margin-top: 8px; }
.dc p:not(.dc-h) { color: var(--ink-2); font-size: 16px; }

/* ---------- 입력 ---------- */
.calc { padding-top: 6px; }
@media (min-width: 960px) { .calc { padding-top: 0; position: sticky; top: calc(var(--nav-h) + 16px); } }
.calc-h { font-size: 18px; font-weight: 800; letter-spacing: -0.03em; padding-bottom: 10px; margin-bottom: 18px; border-bottom: 2px solid var(--rule); }
.fld { margin-bottom: 18px; min-width: 0; }
.lab { display: block; font-size: 14px; font-weight: 700; color: var(--ink-2); margin-bottom: 6px; }
.lab small { font-size: 14px; font-weight: 500; color: var(--ink-3); margin-left: 4px; }
.in { width: 100%; min-width: 0; min-height: 48px; padding: 8px 2px; font: 600 18px/1.3 var(--font); color: var(--ink); background: transparent; border: 0; border-bottom: 1.5px solid var(--rule-ui); border-radius: 0; font-variant-numeric: tabular-nums; -webkit-appearance: none; appearance: none; }
.in[type="date"] { font-family: var(--mono); font-size: 17px; letter-spacing: -0.02em; }
.in::-webkit-date-and-time-value { text-align: left; }
.in::placeholder { color: var(--ink-3); font-weight: 400; opacity: 1; }
.in:focus { outline: none; border-bottom-color: var(--ink); box-shadow: 0 1.5px 0 var(--ink); }
.in[aria-invalid="true"] { border-bottom-color: var(--stamp); }
.money { display: flex; align-items: baseline; gap: 8px; }
.money span { font-weight: 700; color: var(--ink-2); flex: none; }
.pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0 16px; }
.pair .fld { margin-bottom: 0; }
.pair + .hint { margin: 6px 0 18px; }
.hint { font-size: 14px; line-height: 1.45; color: var(--ink-3); margin-top: 6px; }
.err { font-size: 15px; color: var(--stamp); font-weight: 700; margin-top: 6px; }

.seg { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1.5px solid var(--rule-ui); }
.seg label { position: relative; display: block; cursor: pointer; }
.seg label + label { border-left: 1px solid var(--rule-ui); }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: grid; place-items: center; min-height: 44px; font-size: 15px; font-weight: 600; color: var(--ink-2); }
.seg input:checked + span { background: var(--ink); color: var(--sheet); font-weight: 800; }
.seg input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }

.more { margin: 2px 0 18px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.more summary { list-style: none; display: flex; align-items: center; gap: 8px; min-height: 48px; cursor: pointer; font-size: 15px; font-weight: 700; }
.more summary::-webkit-details-marker { display: none; }
.more summary::before { content: "+"; font: 600 20px/1 var(--mono); width: 14px; color: var(--ink-2); }
.more[open] summary::before { content: "−"; }
.more summary small { font-size: 14px; font-weight: 500; color: var(--ink-3); }
.more-body { padding: 4px 0 6px; }
.more-body .pair + .pair { margin-top: 18px; }
.more-body .hint { margin-bottom: 8px; }

.btn-ink { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; min-height: 54px; border: 0; border-radius: 0; background: var(--ink); color: var(--sheet); font-size: 17px; font-weight: 800; letter-spacing: -0.02em; cursor: pointer; }
.btn-ink::after { content: ""; width: 9px; height: 9px; border-top: 2px solid currentColor; border-right: 2px solid currentColor; transform: rotate(45deg); }
.btn-ink:hover { background: var(--sem); color: var(--on-sem); }
.calc-note { margin-top: 10px; font-size: 14px; color: var(--ink-3); line-height: 1.45; }
.calc-sum { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 2px solid var(--rule); border-bottom: 1px solid var(--line); }
.calc-sum p { font-size: 15px; color: var(--ink-2); line-height: 1.45; }
.calc-sum:has(+ .calc-body:not([hidden])) { margin-bottom: 20px; }
.btn-line { flex: none; min-height: 44px; padding: 0 14px; background: transparent; border: 1.5px solid var(--ink); border-radius: 0; font-size: 15px; font-weight: 700; cursor: pointer; }
.btn-line:hover { background: var(--ink); color: var(--sheet); }

/* ---------- 고른 날 자세히 ---------- */
.detail { padding: 8px 0 24px; }
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; }
@media (min-width: 960px) {
  .detail-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); column-gap: 48px; row-gap: 48px; grid-template-areas: "slip cal" "slip ledger" "legal legal"; align-items: start; }
  .slip { grid-area: slip; position: sticky; top: calc(var(--nav-h) + 16px); }
  .cal { grid-area: cal; } .ledger { grid-area: ledger; } .legal { grid-area: legal; }
}
.sec-h { font-size: 22px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.3; padding-bottom: 10px; margin-bottom: 16px; border-bottom: 2px solid var(--rule); }
@media (min-width: 960px) { .sec-h { font-size: 26px; } }

/* 명세서 쪽지: 위가 절취선 */
.slip { background: var(--sheet); padding: 18px 16px 16px; margin: 0 calc(var(--gutter) * -1 + 4px); border-top: 2px dashed var(--rule-ui); }
@media (min-width: 600px) { .slip { margin: 0; padding: 22px 22px 18px; } }
.slip .sec-h { border-bottom-width: 1px; font-size: 15px; color: var(--ink-2); padding-bottom: 8px; margin-bottom: 12px; letter-spacing: -0.01em; }
.slip-date { font: 600 15px/1.4 var(--font); color: var(--ink-2); }
.slip-amt { display: flex; align-items: baseline; gap: 4px; margin-top: 2px; }
.slip-amt b { font-size: 36px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.15; }
.slip-amt span { font-size: 18px; font-weight: 700; }
.slip-vs { margin-top: 4px; font-size: 16px; font-weight: 700; color: var(--ink-2); }
.slip-vs.up { color: var(--sem); } .slip-vs.down { color: var(--stamp); } .slip-vs.plan { color: var(--ink); }
.why { margin-top: 14px; border-top: 1px solid var(--line); }
.why li { display: grid; grid-template-columns: auto minmax(12px, 1fr) auto; align-items: baseline; gap: 6px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.why i { border-bottom: 1.5px dotted var(--rule-ui); transform: translateY(-4px); }
.why b { font-weight: 800; }
.why li.up b { color: var(--sem); } .why li.down b { color: var(--stamp); }
.tip { margin-top: 14px; padding: 10px 12px; background: var(--paper); font-size: 15px; line-height: 1.5; border-left: 3px solid var(--ink); }
.tip button { padding: 0; background: none; border: 0; font-weight: 800; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; min-height: 24px; }
.steps { margin-top: 14px; }
.steps summary { min-height: 44px; display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 15px; font-weight: 700; list-style: none; }
.steps summary::-webkit-details-marker { display: none; }
.steps summary::before { content: "+"; font: 600 20px/1 var(--mono); width: 14px; color: var(--ink-2); }
.steps[open] summary::before { content: "−"; }
.steps-list { display: grid; grid-template-columns: minmax(0, 1fr) auto; font-size: 15px; }
.steps-list dt, .steps-list dd { padding: 8px 0; border-bottom: 1px solid var(--line); }
.steps-list dt { color: var(--ink-2); padding-right: 12px; }
.steps-list dd { text-align: right; font-weight: 700; }
.steps-list .sum { border-bottom: 0; border-top: 2px solid var(--rule); font-weight: 800; color: var(--ink); }

/* 달력 */
.months { display: flex; gap: 0; overflow-x: auto; border: 1.5px solid var(--rule-ui); margin-bottom: 12px; scrollbar-width: none; }
.months::-webkit-scrollbar { display: none; }
.mtab { flex: 1 0 auto; min-width: 60px; min-height: 52px; padding: 6px 8px; display: grid; place-content: center; gap: 0; text-align: center; background: transparent; border: 0; cursor: pointer; }
.mtab + .mtab { border-left: 1px solid var(--rule-ui); }
.mtab b { font-size: 15px; font-weight: 800; }
.mtab span { font-size: 14px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.mtab[aria-selected="true"] { background: var(--ink); color: var(--sheet); }
.mtab[aria-selected="true"] span { color: var(--sheet); }
.grid7 { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); border-top: 2px solid var(--rule); border-left: 1px solid var(--line); }
.grid7 > * { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.dow { text-align: center; font-size: 14px; font-weight: 700; color: var(--ink-2); padding: 6px 0; }
.dow.sun, .day.sun .dn { color: var(--stamp); }
.day { position: relative; display: flex; flex-direction: column; align-items: flex-start; justify-content: space-between; min-height: 58px; padding: 5px 5px 4px; background: transparent; border-top: 0; border-left: 0; text-align: left; cursor: pointer; }
.day .dn { font-size: 14px; font-weight: 700; line-height: 1; }
.day .dv { align-self: flex-end; font-size: 14px; font-weight: 600; color: var(--ink-2); font-variant-numeric: tabular-nums; letter-spacing: -0.03em; }
.day:hover { background: var(--paper); }
.day.is-zero .dv { color: var(--ink-3); }
.day.is-drop { background: var(--stamp-tint); }
.day.is-drop .dv { color: var(--stamp); font-weight: 700; }
.day.is-best { background: var(--mark); }
.day.is-best .dn, .day.is-best .dv { color: var(--mark-ink); font-weight: 800; }
.day.is-plan::after { content: ""; position: absolute; inset: 3px; border: 1.5px dashed var(--ink); pointer-events: none; }
.day.is-best.is-plan::after { border-color: var(--mark-ink); }
.day[aria-selected="true"] { outline: 2.5px solid var(--ink); outline-offset: -2.5px; z-index: 1; }
.cal-key { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 10px; font-size: 14px; color: var(--ink-2); }
.cal-key span { display: inline-flex; align-items: center; gap: 7px; }
.cal-key span::before { content: ""; width: 14px; height: 14px; flex: none; }
.ck-best::before { background: var(--mark); }
.ck-drop::before { background: var(--stamp-tint); border: 1px solid var(--stamp); }
.ck-plan::before { border: 1.5px dashed var(--ink); }
@media (max-width: 380px) { .day .dv { font-size: 14px; letter-spacing: -0.06em; } .day { padding: 4px 3px; } }

/* 달마다 가장 많은 날: 장부 줄 */
.ledger-list li { border-bottom: 1px solid var(--line); }
.ledger-list button { display: grid; grid-template-columns: auto minmax(12px, 1fr) auto; grid-template-areas: "d f a" "s s s"; align-items: baseline; gap: 0 8px; width: 100%; padding: 11px 0; background: none; border: 0; text-align: left; cursor: pointer; }
@media (min-width: 600px) { .ledger-list button { grid-template-columns: 8.5em minmax(12px, 1fr) auto 7.5em; grid-template-areas: "d f a s"; } }
.ledger-list .ld { grid-area: d; font-size: 15px; font-weight: 700; }
.ledger-list .lf { grid-area: f; border-bottom: 1.5px dotted var(--rule-ui); transform: translateY(-4px); }
.ledger-list .la { grid-area: a; font-size: 17px; font-weight: 800; }
.ledger-list .ls { grid-area: s; font-size: 14px; font-weight: 700; color: var(--ink-3); text-align: right; }
.ledger-list .ls.up { color: var(--sem); } .ledger-list .ls.down { color: var(--stamp); } .ledger-list .ls.plan { color: var(--ink); }
.ledger-list button:hover .ld { text-decoration: underline; text-underline-offset: 3px; }
.ledger .hint { margin-top: 12px; }
.legal { font-size: 14px; line-height: 1.55; color: var(--ink-3); padding-top: 14px; border-top: 1px solid var(--line); }

/* 쿠팡 파트너스 */
.shop { margin-top: 48px; padding-top: 14px; border-top: 2px solid var(--rule); }
.shop-head { display: flex; align-items: center; gap: 10px; }
.shop-head h2 { font-size: 17px; font-weight: 800; letter-spacing: -0.02em; margin: 0; }
.shop-tag { font-size: 14px; line-height: 1; padding: 4px 6px; border: 1px solid var(--rule-ui); color: var(--ink-2); }
.shop-list { display: grid; gap: 0; margin-top: 10px; }
@media (min-width: 960px) { .shop-list { grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 24px; } }
.shop-item { display: grid; grid-template-columns: 64px minmax(0, 1fr) 20px; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.shop-img { width: 64px; height: 64px; flex: none; display: grid; place-items: center; background: var(--sheet); border: 1px solid var(--line); overflow: hidden; }
.shop-img svg { width: 28px; height: 28px; fill: none; stroke: var(--ink-3); stroke-width: 1.5; }
.shop-img img { width: 100%; height: 100%; object-fit: contain; background: #fff; display: block; }
.shop-txt { display: grid; gap: 2px; min-width: 0; }
.shop-txt b { font-size: 15px; line-height: 1.35; }
.shop-txt span { font-size: 14px; line-height: 1.45; color: var(--ink-2); }
.shop-go { width: 18px; height: 18px; fill: none; stroke: var(--ink-2); stroke-width: 2; }
.shop-item:hover b { text-decoration: underline; text-underline-offset: 3px; }
.shop-note { margin-top: 10px; font-size: 14px; line-height: 1.5; color: var(--ink-3); }

/* ---------- 계산 근거 ---------- */
.basis { padding: 56px 0 24px; border-top: 1px solid var(--line); }
.basis-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; }
@media (min-width: 960px) { .basis-grid { grid-template-columns: minmax(0, 8fr) minmax(0, 3fr); column-gap: 64px; } .basis { padding-top: 80px; } }
.formula { font: 600 15px/1.55 var(--mono); letter-spacing: -0.02em; padding: 10px 12px; background: var(--sheet); border-left: 3px solid var(--ink); }
.formula + .formula { margin-top: 6px; }
.folds { margin-top: 20px; border-top: 1px solid var(--line); }
.fold { border-bottom: 1px solid var(--line); }
.fold summary { list-style: none; display: grid; grid-template-columns: minmax(0, 1fr) 20px; gap: 12px; align-items: center; min-height: 56px; padding: 10px 0; font-size: 16px; font-weight: 700; cursor: pointer; }
.fold summary::-webkit-details-marker { display: none; }
.fold summary::after { content: "+"; font: 500 22px/1 var(--mono); color: var(--ink-2); justify-self: end; }
.fold[open] summary::after { content: "−"; }
.fold .body { padding: 0 0 18px; color: var(--ink-2); max-width: 44em; }
.fold .body p + p { margin-top: 10px; }
.fold .body b { color: var(--ink); }
.fold .plain { list-style: disc; padding-left: 1.2em; margin-bottom: 10px; }
.fold .plain li + li { margin-top: 6px; }
.fold a { font-weight: 700; }
.faq-h { margin-top: 56px; }
.side-h { font-size: 14px; font-weight: 700; color: var(--ink-2); padding-bottom: 8px; border-bottom: 2px solid var(--rule); }
.std { display: grid; grid-template-columns: auto minmax(0, 1fr); font-size: 15px; }
.std dt, .std dd { padding: 10px 0; border-bottom: 1px solid var(--line); }
.std dt { color: var(--ink-2); padding-right: 12px; }
.std dd { text-align: right; font-weight: 700; }
@media (min-width: 960px) { .basis-side { position: sticky; top: calc(var(--nav-h) + 24px); align-self: start; } }

/* ---------- 바닥글 ---------- */
.foot { margin-top: 48px; padding: 32px 0 48px; border-top: 3px double var(--rule); font-size: 14px; line-height: 1.55; color: var(--ink-2); }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
@media (min-width: 960px) { .foot-grid { grid-template-columns: 4fr 3fr 4fr 2fr; column-gap: 40px; } }
.foot-logo { display: inline-block; font-size: 16px; font-weight: 800; color: var(--ink); text-decoration: none; margin-bottom: 6px; }
.foot-h { font-size: 14px; font-weight: 800; color: var(--ink); margin: 0 0 4px; }
.foot a { color: var(--ink); }
.foot ul li + li { margin-top: 4px; }
.foot-base { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 4px 16px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--ink-3); }

@media print { .fam, .nav, .calc, .shop, .ad-slot { display: none !important; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }