/* style.css — 1021213 HEARING_TEST (가청 주파수 테스트)
   출발점: DesignKit kit-luxury (세리프 디스플레이 · 넓은 여백 · 자간 넓은 소문자 라벨 · 1px 라인 프레임)
   → 평면 변형: 금색·그라디언트 워시·비네트·블러 헤더·장식 아이콘 프레임 제거, 그림자 없음, 모서리 0
   - 무드: 고급 오디오 기기의 전면 패널(faceplate) + 잡지형(readymag) 비대칭 여백
   - 색: 채도 거의 0의 종이색 바탕 + 잉크 1색. 유채 액센트 없음, 기능색은 경고(적갈색) 1색만
   - 타이포: Cormorant Garamond(수치·제목) + Jost(라벨·본문), 수치는 라이닝·고정폭 숫자 */
:root {
  --bg: #f6f5f1; --sunk: #edebe5;
  --ink: #1b1a17; --ink-2: #57544e; --ink-3: #8d8980;
  --line: #dcd9d1; --line-2: #bfbbb2;
  --warn: #9c2b1d;
  --serif: 'Cormorant Garamond', 'Cormorant', Georgia, 'Times New Roman', 'Apple SD Gothic Neo', 'Noto Serif KR', 'Hiragino Mincho ProN', 'Songti SC', 'Noto Naskh Arabic', serif;
  --sans: 'Jost', 'Avenir Next', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Hiragino Sans', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans', 'Noto Sans Arabic', Roboto, sans-serif;
  --wide: 1080px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #121210; --sunk: #1b1a18;
  --ink: #ebe8e0; --ink-2: #aba79e; --ink-3: #77736b;
  --line: #2a2926; --line-2: #413f3a;
  --warn: #ec8f80;
  color-scheme: dark;
}
[hidden] { display: none !important; }
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.7; font-weight: 400;
  -webkit-font-smoothing: antialiased; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--line-2); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { text-decoration-color: var(--ink); }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
:focus-visible { outline: 1px solid var(--ink); outline-offset: 3px; }
.num, .read-val, .res-t b, .hist b, .dev dd, .hz-in, .num-c { font-variant-numeric: lining-nums tabular-nums; font-feature-settings: "lnum" 1, "tnum" 1; }

/* 라벨(자간 넓은 작은 대문자) — 여러 곳에서 공유 */
.c-lab, .read-top, .res-t thead th, .tbl thead th, .dev dt, .sub-h, .crumb, .nav a, .foot-main a, .copyright, .stamp, .mode-n {
  font-family: var(--sans); font-size: .72rem; font-weight: 500; letter-spacing: .16em; text-transform: uppercase;
}

/* ── header: 메뉴 | 브랜드(가운데) | 도구 ── */
.top { border-bottom: 1px solid var(--line); background: var(--bg); }
.top-in { max-width: var(--wide); margin: 0 auto; padding: 0 24px; min-height: 84px; display: grid;
  grid-template-columns: 1fr auto 1fr; grid-template-areas: "nav brand tools"; align-items: center; gap: 12px 28px; }
.brand { grid-area: brand; display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink);
  font-family: var(--serif); font-size: 1.5rem; font-weight: 500; letter-spacing: .01em; line-height: 1.1; white-space: nowrap; }
.mark { color: var(--ink); flex: none; }
.nav { grid-area: nav; display: flex; gap: 26px; justify-self: start; }
.nav a { color: var(--ink-2); text-decoration: none; padding: 6px 0; border-bottom: 1px solid transparent; white-space: nowrap; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); }
.top-tools { grid-area: tools; justify-self: end; display: flex; gap: 10px; align-items: center; }
.lang { height: 34px; border: 0; border-bottom: 1px solid var(--line-2); border-radius: 0; background: var(--bg); padding: 0 4px; font-size: .84rem; max-width: 124px; }
.theme-btn { width: 34px; height: 34px; border: 1px solid var(--line-2); background: none; border-radius: 0; display: grid; place-items: center; color: var(--ink-2); }
.theme-btn:hover { color: var(--ink); border-color: var(--ink); }
@media (max-width: 1100px) {
  .top-in { grid-template-columns: 1fr auto; grid-template-areas: "brand tools" "nav nav"; min-height: 0; padding-top: 16px; }
  .brand { justify-self: start; font-size: 1.3rem; }
  .nav { width: 100%; overflow-x: auto; gap: 22px; padding-bottom: 10px; scrollbar-width: none; }
}
@media (max-width: 520px) {
  .brand { font-size: 1.12rem; gap: 8px; white-space: normal; }
  .mark { width: 26px; }
  .lang { max-width: 96px; }
}

/* ── tool ── */
.app { width: 100%; max-width: var(--wide); margin: 0 auto; padding: 44px 24px 56px; flex: 1; }

/* 모드: 3칸 셀렉터(로마 숫자 + 세리프 이름) */
.modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.mode { background: none; border: 0; border-top: 2px solid transparent; margin-top: -1px; padding: 16px 0 18px; text-align: start;
  color: var(--ink-3); display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.mode + .mode { padding-inline-start: 20px; border-inline-start: 1px solid var(--line); }
.mode-n { font-size: .68rem; color: var(--ink-3); }
.mode-t { font-family: var(--serif); font-size: clamp(1.15rem, 2.6vw, 1.65rem); font-weight: 500; line-height: 1.2; }
.mode:hover { color: var(--ink); }
.mode[aria-selected="true"] { color: var(--ink); border-top-color: var(--ink); }
.mode[aria-selected="true"] .mode-n { color: var(--ink); }

.inst { padding: 28px 0 0; }

/* 전면 패널 */
.plate { border: 1px solid var(--line-2); padding: 34px 40px 30px; }
.read-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 18px; color: var(--ink-2); }
.read-range { color: var(--ink-3); letter-spacing: .06em; text-transform: none; }
.read-val { display: block; font-family: var(--serif); font-weight: 400; font-size: clamp(3.6rem, 14vw, 8.8rem); line-height: 1; letter-spacing: -0.02em;
  margin: 26px 0 14px; min-height: 1em; text-align: left; }
[dir="rtl"] .read-val { text-align: right; }
.status { margin: 0; min-height: 1.6em; font-family: var(--serif); font-style: italic; font-size: 1.2rem; line-height: 1.45; color: var(--ink-2); max-width: 720px; }
.status[data-kind="warn"] { color: var(--warn); }
.status[data-kind="ok"] { color: var(--ink); }

/* 로그 눈금 자 */
.ruler { position: relative; margin: 44px 4px 4px; height: 66px; }
.r-track { position: absolute; left: 0; right: 0; top: 28px; height: 1px; background: var(--ink); }
.r-cap { position: absolute; top: -4px; height: 9px; right: 0; background: var(--sunk); border-left: 1px solid var(--ink-3); }
.r-cur { position: absolute; top: -18px; width: 1px; height: 30px; background: var(--ink); transform: translateX(-0.5px); }
.r-cur::after { content: ''; position: absolute; left: -3px; top: 0; width: 7px; height: 7px; background: var(--ink); }
.r-ticks { position: absolute; left: 0; right: 0; top: 28px; }
.tick { position: absolute; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; }
.tick i { width: 1px; height: 9px; background: var(--ink); }
.tick b { font-family: var(--sans); font-weight: 400; font-size: .7rem; letter-spacing: .04em; color: var(--ink-3); margin-top: 6px; }
.r-marks { position: absolute; left: 0; right: 0; top: 0; }
.mk { position: absolute; top: 0; transform: translateX(-50%); font-family: var(--sans); font-size: .6rem; font-weight: 500; letter-spacing: .06em; line-height: 1;
  padding: 3px 4px; border: 1px solid var(--ink); background: var(--bg); color: var(--ink); }
.mk-B { background: var(--ink); color: var(--bg); }

/* 컨트롤: 넓은 화면 2단(측정 설정 | 귀·음량) */
.ctrls { margin-top: 36px; }
.c-row { display: grid; grid-template-columns: 116px minmax(0, 1fr); align-items: center; gap: 10px 20px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.ctrl .c-row:first-child { border-top: 1px solid var(--line); }
.c-full { grid-template-columns: minmax(0, 1fr); }
.c-lab { color: var(--ink-2); }
.c-hint { margin: 12px 0 0; font-size: .84rem; line-height: 1.6; color: var(--ink-3); }
@media (min-width: 900px) {
  .ctrls { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 56px; align-items: start; }
  .ctrls > .ctrl { grid-column: 1; grid-row: 1 / span 3; }
  .ctrls > .c-row, .ctrls > .c-hint { grid-column: 2; }
  .ctrls > .c-ear { border-top: 1px solid var(--line); }
  #toneCtrl .c-row { grid-template-columns: minmax(0, 1fr); }
}

/* 세그먼트: 밑줄 텍스트 선택 */
.seg { display: flex; flex-wrap: wrap; gap: 4px 22px; }
.seg-b { background: none; border: 0; border-bottom: 1px solid transparent; padding: 6px 0 5px; font-size: .95rem; color: var(--ink-3); }
.seg-b:hover { color: var(--ink); }
.seg-b[aria-pressed="true"] { color: var(--ink); border-bottom-color: var(--ink); }

.hz-box { display: flex; align-items: stretch; flex-wrap: wrap; gap: 6px; }
.nud { border: 1px solid var(--line-2); background: none; border-radius: 0; padding: 0 8px; min-width: 40px; height: 42px; font-size: .84rem; color: var(--ink-2); }
.nud:hover { color: var(--ink); border-color: var(--ink); }
.hz-in-w { display: inline-flex; align-items: baseline; border-bottom: 1px solid var(--ink); padding: 0 4px; }
.hz-in { width: 5.2em; height: 42px; border: 0; background: none; font-family: var(--serif); font-size: 1.7rem; font-weight: 500; text-align: end; padding: 0 4px; }
.hz-in:focus { outline: none; }
.hz-u { font-size: .8rem; letter-spacing: .08em; color: var(--ink-3); }

/* 슬라이더: 가는 선 + 페이더 손잡이 */
.slider { -webkit-appearance: none; appearance: none; width: 100%; height: 26px; background: none; margin: 0; }
.slider::-webkit-slider-runnable-track { height: 1px; background: var(--ink); }
.slider::-moz-range-track { height: 1px; background: var(--ink); }
.slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 6px; height: 22px; border-radius: 0; background: var(--ink); border: 0; margin-top: -11px; }
.slider::-moz-range-thumb { width: 6px; height: 22px; border-radius: 0; background: var(--ink); border: 0; }
.vol-box { display: flex; align-items: center; gap: 16px; min-width: 0; }
.vol-box output { font-size: .88rem; letter-spacing: .04em; min-width: 6.6em; text-align: end; color: var(--ink-2); font-variant-numeric: tabular-nums; }

/* 프리셋: 칸 나눈 키패드 */
.chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); border-top: 1px solid var(--line); border-inline-start: 1px solid var(--line); }
.chip { border: 0; border-bottom: 1px solid var(--line); border-inline-end: 1px solid var(--line); background: none; border-radius: 0; padding: 9px 8px; min-height: 44px;
  font-family: var(--serif); font-size: 1.02rem; font-weight: 500; line-height: 1.2; color: var(--ink-2); text-align: center; font-variant-numeric: lining-nums; }
.chip:hover { color: var(--bg); background: var(--ink); }

/* 버튼 */
.acts { display: flex; justify-content: center; gap: 12px; margin-top: 40px; flex-wrap: wrap; }
.btn-p, .btn-press, .btn-s { border-radius: 0; }
.btn-p { background: var(--ink); color: var(--bg); border: 1px solid var(--ink); padding: 17px 48px; min-width: 240px;
  font-size: .82rem; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; }
.btn-p:hover { background: var(--bg); color: var(--ink); }
.btn-press { background: var(--ink); color: var(--bg); border: 1px solid var(--ink); padding: 22px 40px; min-width: 340px; min-height: 84px;
  font-family: var(--serif); font-size: 1.6rem; font-weight: 500; line-height: 1.2; }
.btn-press:active { background: var(--bg); color: var(--ink); }
.btn-s { background: none; color: var(--ink); border: 1px solid var(--line-2); padding: 8px 16px; font-size: .74rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; }
.btn-s:hover { border-color: var(--ink); }
.acts .btn-s { padding: 17px 28px; }
.key-hint { text-align: center; font-family: var(--serif); font-style: italic; font-size: 1rem; color: var(--ink-3); margin: 16px 0 0; }

/* 결과 */
.res { margin-top: 80px; border-top: 1px solid var(--ink); padding-top: 26px; }
.res-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.res h2 { font-family: var(--serif); font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 400; line-height: 1.1; margin: 0; }
.res-acts { display: flex; gap: 8px; }
.res-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 0 56px; margin-top: 24px; }
.res-t { width: 100%; border-collapse: collapse; font-size: .95rem; }
.res-t th, .res-t td { text-align: start; padding: 14px 10px 14px 0; border-bottom: 1px solid var(--line); vertical-align: baseline; }
[dir="rtl"] .res-t th, [dir="rtl"] .res-t td { padding: 14px 0 14px 10px; }
.res-t thead th { color: var(--ink-3); border-bottom-color: var(--ink); }
.res-t tbody th { font-weight: 400; width: 24%; color: var(--ink-2); }
.res-t b { font-family: var(--serif); font-weight: 500; font-size: 1.65rem; line-height: 1; }
.res-t small { color: var(--ink-3); font-size: .74rem; margin-inline-start: 8px; letter-spacing: .04em; }
.muted { color: var(--ink-3); }
.res-diff { margin: 14px 0 0; font-family: var(--serif); font-size: 1.15rem; }
.res-note { margin: 10px 0 0; font-size: .82rem; line-height: 1.6; color: var(--ink-3); }
.sub-h { color: var(--ink-2); margin: 0 0 4px; padding-bottom: 12px; border-bottom: 1px solid var(--ink); }
.hist { list-style: none; margin: 0; padding: 0; font-size: .86rem; }
.hist li { display: flex; gap: 6px 14px; padding: 9px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; align-items: baseline; }
.hist .h-t { color: var(--ink-3); font-size: .76rem; letter-spacing: .06em; font-variant-numeric: tabular-nums; }
.hist b { font-family: var(--serif); font-weight: 500; font-size: 1.12rem; margin-inline-start: auto; }
.hist .h-n { color: var(--ink-3); font-size: .76rem; min-width: 5em; text-align: end; }
.res > .sub-h { margin-top: 48px; }
.dev { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 32px; margin: 18px 0 0; }
.dev div { padding: 0; }
.dev dt { color: var(--ink-3); }
.dev dd { margin: 6px 0 0; font-family: var(--serif); font-size: 1.5rem; font-weight: 500; line-height: 1.2; }
.dev-note { font-size: .88rem; color: var(--ink-2); margin: 22px 0 0; max-width: 780px; }
.disc { font-family: var(--serif); font-style: italic; font-size: 1.12rem; line-height: 1.5; margin: 28px 0 0; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

@media (max-width: 899px) {
  .res-grid { grid-template-columns: minmax(0, 1fr); }
  .res-side { margin-top: 40px; }
}
@media (max-width: 719px) {
  .top-in, .app { padding-left: 16px; padding-right: 16px; }
  .app { padding-top: 24px; }
  .mode + .mode { padding-inline-start: 12px; }
  .mode { padding: 12px 0 14px; }
  .plate { padding: 22px 18px 18px; }
  .read-val { margin: 18px 0 10px; }
  .status { font-size: 1.08rem; }
  .ruler { margin-top: 32px; }
  .c-row { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .dev { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 24px; }
  .btn-press, .btn-p { width: 100%; min-width: 0; }
  .acts .btn-s { width: 100%; }
  .res { margin-top: 56px; }
}

/* 안전 확인 */
.gate { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 16px; background: rgba(18, 18, 16, .55); }
.gate-box { background: var(--bg); border: 1px solid var(--ink); max-width: 520px; width: 100%; padding: 34px 34px 28px; }
.gate-box h2 { font-family: var(--serif); font-size: 1.75rem; font-weight: 500; line-height: 1.2; margin: 0 0 18px; }
.gate-box ul { margin: 0 0 24px; padding: 0; list-style: none; font-size: .93rem; color: var(--ink-2); border-top: 1px solid var(--line); }
.gate-box li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.gate-acts { display: flex; gap: 10px; flex-wrap: wrap; }
.gate-acts .btn-p { min-width: 0; padding: 14px 22px; letter-spacing: .12em; }
.gate-acts .btn-s { padding: 14px 20px; }
@media (max-width: 519px) { .gate-box { padding: 24px 20px 20px; } }

/* ── ads (애드핏 규정: 래퍼에 radius·overflow 금지) ── */
.ad-wrap { margin: 48px auto 0; }
.ad-grid { display: flex; flex-direction: column; align-items: center; gap: 14px; width: 100%; max-width: 672px; margin: 0 auto; }
.ad-grid[data-ad-layout="mixed"] { max-width: 760px; }
.ad-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; width: 100%; }
.ad-cell { min-height: 50px; max-width: 100%; }
.ad-pc { display: none; }
@media (min-width: 720px) { .ad-pc { display: flex; } .ad-mo { display: none; } }
.prose .ad-wrap { margin: 40px 0; }

/* ── content pages ── */
.page { width: 100%; max-width: 760px; margin: 0 auto; padding: 44px 24px 72px; flex: 1; }
.page.wide { max-width: var(--wide); }
@media (max-width: 719px) { .page { padding: 28px 16px 56px; } }
.crumb { color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; font-size: .68rem; }
.crumb a { color: var(--ink-2); text-decoration: none; }
.crumb a:hover { color: var(--ink); }
.crumb .sep { color: var(--line-2); }
.prose { font-size: 1.02rem; line-height: 1.85; }
.prose h1, .page-h { font-family: var(--serif); font-size: clamp(2.3rem, 6vw, 3.7rem); font-weight: 400; line-height: 1.08; letter-spacing: -0.005em; margin: 0 0 24px; }
.prose h2 { font-family: var(--serif); font-size: clamp(1.45rem, 3vw, 1.85rem); font-weight: 500; line-height: 1.2; margin: 56px 0 14px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { padding-inline-start: 1.2em; margin: 0 0 18px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--ink-3); }
.prose code { font-size: .9em; background: var(--sunk); padding: 1px 5px; }
.lead { font-family: var(--serif); font-style: italic; color: var(--ink-2); font-size: 1.32rem; line-height: 1.5; margin-bottom: 20px; }
.callout { border-inline-start: 1px solid var(--ink); padding: 2px 0 2px 20px; font-family: var(--serif); font-style: italic; font-size: 1.14rem; line-height: 1.55; color: var(--ink); }
[dir="rtl"] .callout { padding: 2px 20px 2px 0; }
.stamp { color: var(--ink-3); font-size: .68rem; margin-bottom: 32px; }
.tbl { overflow-x: auto; margin: 8px 0 20px; }
.tbl table { border-collapse: collapse; width: 100%; font-size: .93rem; line-height: 1.6; }
.tbl th, .tbl td { padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); text-align: start; vertical-align: top; }
[dir="rtl"] .tbl th, [dir="rtl"] .tbl td { padding: 12px 0 12px 14px; }
.tbl thead th { color: var(--ink-3); white-space: nowrap; border-bottom-color: var(--ink); }
.tbl tbody th { font-family: var(--serif); font-size: 1.08rem; font-weight: 500; }
.num-c { font-family: var(--serif); font-size: 1.1rem; font-weight: 500; white-space: nowrap; }
.play-c { white-space: nowrap; }
.play { text-decoration: none; font-size: .7rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; border: 1px solid var(--line-2); padding: 5px 10px; }
.play:hover { border-color: var(--ink); background: var(--ink); color: var(--bg); }
.fn { font-size: .86rem; color: var(--ink-2); }
.src-list { font-size: .9rem; color: var(--ink-2); }
.btn { display: inline-block; background: var(--ink); color: var(--bg); border: 1px solid var(--ink); text-decoration: none; padding: 15px 30px;
  font-size: .78rem; font-weight: 500; letter-spacing: .18em; text-transform: uppercase; }
.btn:hover { background: var(--bg); color: var(--ink); }
.cta { margin-top: 48px; }
.faq { border-bottom: 1px solid var(--line); padding: 0; }
.faq:first-of-type { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 18px; padding: 16px 0;
  font-family: var(--serif); font-size: 1.2rem; font-weight: 500; line-height: 1.35; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-family: var(--sans); font-weight: 300; font-size: 1.3rem; line-height: 1; color: var(--ink-3); flex: none; }
.faq[open] summary::after { content: '−'; }
.faq p { margin: 0 0 18px; color: var(--ink-2); }
.mail { font-family: var(--serif); font-size: 1.3rem; }
.related { margin-top: 64px; border-top: 1px solid var(--ink); }
.related h2 { margin-top: 20px; font-size: 1.3rem; }
.related ul { list-style: none; padding: 0; }
.related li { border-bottom: 1px solid var(--line); margin: 0; padding: 10px 0; }

/* 가이드 허브: 2단 잡지형 목록 */
.page.wide > .page-h, .page.wide > .lead { max-width: 760px; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 56px; margin: 48px 0 8px; }
.card { display: grid; grid-template-columns: 3.2rem minmax(0, 1fr); grid-template-rows: auto 1fr; gap: 6px 16px; padding: 24px 0 28px; border-top: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.card-n { grid-row: 1 / span 2; font-family: var(--serif); font-style: italic; font-size: 2rem; line-height: 1; color: var(--ink-3); font-variant-numeric: lining-nums; }
.card-t { font-family: var(--serif); font-size: 1.42rem; font-weight: 500; line-height: 1.25; }
.card-d { color: var(--ink-2); font-size: .92rem; line-height: 1.6; }
.card:hover .card-t { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.card:hover .card-n { color: var(--ink); }
@media (max-width: 719px) { .cards { grid-template-columns: minmax(0, 1fr); } }

.nf { text-align: center; padding-top: 24px; }
.nf-code { font-family: var(--serif); font-style: italic; font-weight: 400; font-size: clamp(6rem, 24vw, 10rem); line-height: 1; letter-spacing: -0.02em; margin: 0 0 12px; }
.nf-langs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; margin-top: 32px; font-size: .9rem; }

/* ── footer: 가운데 정렬 ── */
.foot { border-top: 1px solid var(--line); margin-top: 48px; }
.foot-in { max-width: var(--wide); margin: 0 auto; padding: 48px 24px 44px; display: grid; gap: 16px; justify-items: center; text-align: center; }
.foot-brand { margin: 0 0 6px; font-family: var(--serif); font-size: 1.7rem; font-weight: 500; line-height: 1.2; }
.foot-main, .foot-guides { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 24px; }
.foot-main a { color: var(--ink-2); text-decoration: none; font-size: .68rem; }
.foot-guides { max-width: 760px; gap: 6px 18px; }
.foot-guides a { color: var(--ink-3); text-decoration: none; font-size: .85rem; }
.foot a:hover { color: var(--ink); }
.foot-disc { margin: 8px 0 0; font-family: var(--serif); font-style: italic; font-size: 1rem; color: var(--ink-2); max-width: 620px; }
.copyright { margin: 0; font-size: .62rem; color: var(--ink-3); }
@media (max-width: 719px) { .foot-in { padding: 40px 16px 36px; } }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 16px); background: var(--ink); color: var(--bg); padding: 11px 20px; border-radius: 0;
  font-size: .86rem; letter-spacing: .04em; opacity: 0; pointer-events: none; transition: opacity .18s, transform .18s; z-index: 70; max-width: calc(100% - 32px); }
.toast.on { opacity: 1; transform: translate(-50%, 0); }