/* CIM 투자자산운용사 (#/cim) — 미니멀 (2026-10-22 승인 시안 template2)
   흑백(거의 흰 #FAFAF9 / 거의 검정 #0B0B0C) + 형광 라임은 '지금 누를 것'에만: 시작 버튼 · 고른 탭 · 정답 · TIP 바탕 · 오늘 표시 · AI 보내기.
   빨강은 과락 · 오답에만. Pretendard 하나, 본문 18px/450/1.75, 제목 800 · 좁은 자간, 가운데 한 줄(최대 640px), 상자 대신 가는 선.
   밝게/어둡게는 앱 테마(data-theme)를 따라요. 움직임은 짧게, '동작 줄이기'면 모두 꺼요. */

:root {
  --c-bg: #FAFAF9; --c-card: #FFFFFF; --c-ink: #0B0B0C; --c-body: #2A2A2E; --c-sub: #6E6E77; --c-faint: #A3A3AB; --c-line: #ECECEE; --c-soft: #F3F3F4;
  --c-lime: #C9F23B; --c-lime-ink: #0B0B0C; --c-lime-soft: #F2FBD3; --c-lime-text: #4D6B00;
  --c-bad: #E5484D; --c-bad-soft: #FDEBEC;
  --c-font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  --c-ease: cubic-bezier(.2, .8, .2, 1);
  --c-shadow: 0 10px 30px rgba(0, 0, 0, .14);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --c-bg: #0B0B0C; --c-card: #151517; --c-ink: #F5F5F6; --c-body: #D4D4D8; --c-sub: #8E8E97; --c-faint: #5E5E66; --c-line: #26262A; --c-soft: #1C1C1F;
    --c-lime: #D4FF45; --c-lime-soft: #232B0C; --c-lime-text: #D4FF45; --c-bad: #FF6369; --c-bad-soft: #2E1415; --c-shadow: 0 10px 30px rgba(0, 0, 0, .5);
  }
}
:root[data-theme="dark"] {
  --c-bg: #0B0B0C; --c-card: #151517; --c-ink: #F5F5F6; --c-body: #D4D4D8; --c-sub: #8E8E97; --c-faint: #5E5E66; --c-line: #26262A; --c-soft: #1C1C1F;
  --c-lime: #D4FF45; --c-lime-soft: #232B0C; --c-lime-text: #D4FF45; --c-bad: #FF6369; --c-bad-soft: #2E1415; --c-shadow: 0 10px 30px rgba(0, 0, 0, .5);
}

.host-cim { min-height: 100%; animation: none; display: flex; flex-direction: column; }
.main:has(.host-cim) { background: var(--c-bg) !important; -webkit-backdrop-filter: none !important; backdrop-filter: none !important; box-shadow: none !important; border-color: var(--c-line) !important; }
body:has(.host-cim) .bg { opacity: .18; filter: blur(2px) grayscale(1); }

.cim {
  --ink: var(--c-ink); --ink-2: var(--c-body); --ink-3: var(--c-sub); --line: var(--c-line); --line-2: var(--c-line);
  flex: 1 0 auto; display: flex; flex-direction: column; background: var(--c-bg); color: var(--c-ink);
  font-family: var(--c-font); font-size: 18px; line-height: 1.75; font-weight: 450; letter-spacing: -.012em;
  -webkit-font-smoothing: antialiased; word-break: keep-all; overflow-wrap: anywhere;
  padding: 0 20px; transition: padding-right .25s var(--c-ease);
}
:where(.cim) a { color: inherit; text-decoration: none; }
:where(.cim) button { font: inherit; color: inherit; letter-spacing: inherit; border: 0; background: none; cursor: pointer; padding: 0; }
:where(.cim) button:disabled { cursor: default; opacity: .4; }
.cim :focus-visible { outline: 2px solid var(--c-ink); outline-offset: 3px; border-radius: 12px; }
.cim h1, .cim h2, .cim h3, .cim h4 { margin: 0; color: var(--c-ink); letter-spacing: -.035em; text-wrap: balance; }
.cim p { margin: 0; }
.cim .num { font-variant-numeric: tabular-nums; }
.cim .dim { color: var(--c-sub); }
.cim .ok { color: var(--c-lime-text); }
.cim .bad { color: var(--c-bad); }
.press { transition: transform .15s var(--c-ease), background-color .2s, border-color .2s, opacity .2s, color .2s; }
.press:active:not(:disabled) { transform: scale(.97); }

/* ---------- 위 · 아래 ---------- */
.c-top { position: sticky; top: 0; z-index: 20; margin: 0 -20px; padding: 0 20px; background: color-mix(in srgb, var(--c-bg) 85%, transparent); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.c-top .in { max-width: 640px; margin: 0 auto; height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.c-top .r { display: flex; align-items: center; gap: 2px; min-width: 0; }
.c-mark { font-weight: 800; font-size: 17px; letter-spacing: -.03em; display: inline-flex; align-items: center; gap: 8px; }
.c-mark i { width: 10px; height: 10px; border-radius: 3px; background: var(--c-lime); display: inline-block; }
.c-sync { font-size: 13px; color: var(--c-faint); margin-right: 6px; white-space: nowrap; }
.c-sync[data-s="saved"] { opacity: 0; transition: opacity .6s 1.2s; }
.c-ghost { font-size: 14.5px; font-weight: 600; color: var(--c-sub) !important; padding: 6px 10px; border-radius: 10px; white-space: nowrap; display: inline-flex; align-items: center; }
.c-ghost:hover { background: var(--c-soft); color: var(--c-ink) !important; }
.c-ghost[aria-expanded="true"] { color: var(--c-ink) !important; background: var(--c-soft); }
.c-prog { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--c-ink); transform-origin: 0 50%; transform: scaleX(0); transition: transform .3s var(--c-ease); pointer-events: none; }
.c-col { width: 100%; max-width: 640px; margin: 0 auto; flex: 1; padding-bottom: 120px; }
.c-going .c-col { padding-bottom: 56px; }

.c-tabbar { position: sticky; bottom: 18px; z-index: 30; align-self: center; margin: -96px 0 18px; display: flex; gap: 4px; padding: 5px; border-radius: 18px; background: var(--c-ink); box-shadow: var(--c-shadow); }
.c-tabbar a { position: relative; z-index: 1; color: color-mix(in srgb, var(--c-bg) 62%, transparent) !important; font-size: 15px; font-weight: 700; line-height: 1.5; padding: 10px 20px; border-radius: 13px; transition: color .2s; }
.c-tabbar a:hover { color: var(--c-bg) !important; }
.c-tabbar a[aria-current="page"] { color: var(--c-lime-ink) !important; }
.c-tabbar .ink { position: absolute; top: 5px; bottom: 5px; left: 0; width: 0; border-radius: 13px; background: var(--c-lime); transition: transform .38s var(--c-ease), width .38s var(--c-ease); }
.c-going .c-tabbar, .c-focus .c-tabbar { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .c-v { animation: c-up .4s var(--c-ease); }
  @keyframes c-up { from { transform: translateY(12px); opacity: .3; } to { transform: none; opacity: 1; } }
}

/* ---------- 공통 부품 ---------- */
.c-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 16px; padding: 15px 20px; font-size: 17px; font-weight: 750; line-height: 1.4; background: var(--c-soft) !important; color: var(--c-ink) !important; text-align: center; }
.c-btn:hover:not(:disabled) { filter: brightness(.97); }
.c-btn.dark { background: var(--c-ink) !important; color: var(--c-bg) !important; }
.c-btn.lime { background: var(--c-lime) !important; color: var(--c-lime-ink) !important; }
.c-btn.sm { padding: 8px 14px; font-size: 15px; border-radius: 12px; }
.c-btn.wide { width: 100%; }
.c-link { font-size: 14.5px; font-weight: 600; color: var(--c-sub) !important; text-decoration: underline !important; text-underline-offset: 4px; text-decoration-color: var(--c-line) !important; }
.c-link:hover { color: var(--c-ink) !important; text-decoration-color: currentColor !important; }
.c-navrow { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; margin-top: 6px; }
.c-navrow > .c-btn:first-child:not(.wide) { min-width: 58px; }
.c-col2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px; }
.c-navrow.c-col2 > .wide { grid-column: 1 / -1; }
.c-hint { font-size: 14.5px; color: var(--c-sub); text-align: center; }
.c-lead { color: var(--c-sub); font-size: 16.5px; line-height: 1.65; }
.c-lead.sm { font-size: 14px; margin-top: 10px; }
.c-empty { color: var(--c-sub); font-size: 16px; padding: 14px 0; }
.c-tag { font-size: 12px; font-weight: 700; line-height: 1.5; padding: 1px 7px; border-radius: 6px; border: 1px solid var(--c-ink); color: var(--c-ink); white-space: nowrap; }
.c-tag.soft { border-color: var(--c-line); color: var(--c-sub); }
.c-loading { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 72px 8px; color: var(--c-sub); font-size: 16px; }
.c-pulse { width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid var(--c-line); border-top-color: var(--c-ink); animation: c-spin .8s linear infinite; }
@keyframes c-spin { to { transform: rotate(360deg); } }
.c-err { display: grid; gap: 10px; justify-items: start; padding: 40px 0; }
.c-err b { font-size: 20px; font-weight: 800; }
.c-err p { color: var(--c-sub); }
.c-bar { height: 3px; border-radius: 2px; background: var(--c-line); overflow: hidden; }
.c-bar i { display: block; height: 100%; background: var(--c-ink); transform-origin: 0 50%; transition: transform .4s var(--c-ease); }
.c-mini { width: 46px; height: 4px; border-radius: 2px; background: var(--c-line); overflow: hidden; display: inline-block; }
.c-mini i { display: block; height: 100%; background: var(--c-ink); }

/* ---------- 오늘 ---------- */
.c-today { padding-top: 40px; display: grid; gap: 40px; }
.c-dday { display: grid; gap: 6px; justify-items: start; }
.c-dday .k { font-size: 15px; font-weight: 600; color: var(--c-sub); }
.c-dday .v { font-size: clamp(88px, 22vw, 132px); font-weight: 800; line-height: .9; letter-spacing: -.06em; }
.c-dday .v.dim { color: var(--c-line); }
.c-dday .d { font-size: 16px; color: var(--c-sub); font-weight: 500; display: flex; flex-wrap: wrap; align-items: center; gap: 2px 6px; }
.c-dday .d .c-ghost { font-size: 14px; padding: 2px 8px; text-decoration: underline; text-underline-offset: 3px; }
.c-pick { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%; margin-top: 10px; padding: 14px 16px 14px 20px; border: 1.5px solid var(--c-ink); border-radius: 18px; background: var(--c-card); font-size: 17px; font-weight: 750; cursor: pointer; }
.c-pick input { font: 600 16px var(--c-font); color: var(--c-ink); background: var(--c-soft); border: 0; border-radius: 10px; padding: 8px 10px; min-width: 0; color-scheme: light dark; }
.c-plan { display: grid; gap: 14px; }
.c-plan .t { font-size: 15px; font-weight: 600; color: var(--c-sub); }
.c-plan h2 { font-size: 30px; font-weight: 800; line-height: 1.3; }
.c-plan h2 .dim { font-size: .72em; font-weight: 700; letter-spacing: -.02em; }
.c-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; margin-top: 4px; }
.c-steps div { display: grid; gap: 8px; font-size: 14px; font-weight: 600; color: var(--c-faint); }
.c-steps i { height: 6px; border-radius: 3px; background: var(--c-line); }
.c-steps .done { color: var(--c-ink); } .c-steps .done i { background: var(--c-ink); }
.c-steps .now { color: var(--c-ink); } .c-steps .now i { background: var(--c-lime); }
.c-go { width: 100%; background: var(--c-lime) !important; color: var(--c-lime-ink) !important; border-radius: 20px; padding: 22px 26px; font-size: 20px; font-weight: 800; line-height: 1.4; display: flex; justify-content: space-between; align-items: center; gap: 12px; letter-spacing: -.02em; text-align: left; }
.c-go:hover { filter: brightness(.97); }
.c-go span { font-size: 15px; font-weight: 600; opacity: .72; white-space: nowrap; }
.c-subj { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--c-line); }
.c-subj > div { padding: 18px 0 0; display: grid; gap: 2px; align-content: start; min-width: 0; }
.c-subj > div + div { padding-left: 16px; border-left: 1px solid var(--c-line); }
.c-subj .k { font-size: 13.5px; color: var(--c-sub); font-weight: 600; }
.c-subj .v { font-size: 30px; font-weight: 800; letter-spacing: -.04em; line-height: 1.4; }
.c-subj .v small { font-size: 15px; color: var(--c-sub); font-weight: 700; }
.c-subj .s { font-size: 13px; font-weight: 600; color: var(--c-faint); }
.c-subj .ok .s { color: var(--c-lime-text); }
.c-subj .bad .v, .c-subj .bad .s { color: var(--c-bad); }

/* ---------- 한 장씩 (오늘 공부 · 공부 읽기 · 문제) ---------- */
.c-session { padding-top: 18px; display: grid; gap: 22px; }
.c-stepper { display: flex; gap: 6px; }
.c-stepper i { flex: 1; height: 4px; border-radius: 2px; background: var(--c-line); overflow: hidden; position: relative; }
.c-stepper i b { position: absolute; inset: 0; background: var(--c-ink); transform-origin: 0 50%; transition: transform .4s var(--c-ease); }
.c-shead { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 14.5px; font-weight: 600; color: var(--c-sub); min-height: 34px; }
.c-shead .r { display: flex; gap: 2px; flex-wrap: wrap; justify-content: flex-end; }
.c-shead > .c-ghost:first-child { margin-left: -10px; }
.c-chap { font-size: 14px; font-weight: 600; color: var(--c-sub); }
.c-kp { display: grid; gap: 18px; }
.c-meta { font-size: 14px; font-weight: 600; color: var(--c-sub); display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; }
.c-meta b { color: var(--c-lime-text); letter-spacing: .02em; }
.c-kp h2 { font-size: 30px; font-weight: 800; line-height: 1.3; }
.c-text { display: grid; gap: 12px; color: var(--c-body); }
.c-box { border-radius: 16px; padding: 16px 18px; display: grid; gap: 4px; background: var(--c-soft); }
.c-box .bl { font-size: 13px; font-weight: 800; color: var(--c-sub); }
.c-box p { color: var(--c-ink); font-weight: 500; font-size: 17px; line-height: 1.7; }
.c-box.tip { background: var(--c-lime-soft); }
.c-box.tip .bl { color: var(--c-lime-text); }
.c-box.story p { color: var(--c-body); font-size: 16px; }
.c-formula { border: 1px solid var(--c-line); border-radius: 14px; padding: 14px 16px; font-weight: 650; color: var(--c-ink); text-align: center; overflow-x: auto; font-variant-numeric: tabular-nums; }
.c-sub { font-size: 19px; font-weight: 750; line-height: 1.5; color: var(--c-ink); margin: 10px 0 0; display: flex; gap: 10px; letter-spacing: -.02em; }
.c-sub .no { color: var(--c-faint); font-variant-numeric: tabular-nums; }
.c-li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 8px; }
.c-li .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-ink); margin: 12px 0 0 6px; }
.c-li2 { padding-left: 30px; color: var(--c-sub); font-size: 16.5px; }
.c-tw { overflow-x: auto; border-top: 1px solid var(--c-line); }
.c-tbl { border-collapse: collapse; width: 100%; font-size: 16px; }
.c-tbl th, .c-tbl td { padding: 12px 10px 12px 0; vertical-align: top; text-align: left; border-bottom: 1px solid var(--c-line); line-height: 1.6; }
.c-tbl th { font-size: 14px; color: var(--c-sub); font-weight: 700; }
.c-tbl td:first-child { font-weight: 700; color: var(--c-ink); width: 34%; }
.c-tbl.one td:first-child { width: auto; font-weight: 450; }
.c-tbl td b { font-weight: 700; color: var(--c-ink); }
mark.c-my { background: none; color: inherit; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; text-decoration-color: var(--c-ink); }
.c-why { border-left: 3px solid var(--c-lime); padding: 2px 0 2px 16px; display: grid; gap: 8px; }
.c-why b { font-size: 15px; font-weight: 800; color: var(--c-ink); }
.c-why p { color: var(--c-body); font-size: 16.5px; }
.c-why .ex span { font-size: 13px; font-weight: 800; color: var(--c-sub); margin-right: 4px; }
.c-why .hook { color: var(--c-ink); font-weight: 650; }
.c-why .c-formula { text-align: left; }

/* 문제 */
.c-qmeta { font-size: 14px; font-weight: 600; color: var(--c-sub); }
.c-qstem { font-size: 22px; font-weight: 750; line-height: 1.55; letter-spacing: -.025em; color: var(--c-ink); }
.c-qstem.sm { font-size: 18px; }
.c-opts { display: grid; gap: 10px; }
.c-opt { text-align: left; border: 1.5px solid var(--c-line) !important; background: var(--c-card) !important; border-radius: 16px; padding: 16px 18px !important; font-size: 17px; font-weight: 500; display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 10px; line-height: 1.6; transition: border-color .2s, background .2s, transform .15s var(--c-ease); }
.c-opt:hover:not(:disabled) { border-color: var(--c-ink) !important; }
.c-opt .k { font-weight: 800; color: var(--c-faint); }
.c-opt.pick { border-color: var(--c-ink) !important; background: var(--c-soft) !important; }
.c-opt.pick .k { color: var(--c-ink); }
.c-opt.right { border-color: var(--c-ink) !important; background: var(--c-lime) !important; color: var(--c-lime-ink); }
.c-opt.right .k { color: var(--c-lime-ink); }
.c-opt.wrong { border-color: var(--c-bad) !important; background: var(--c-bad-soft) !important; }
.c-opt.wrong .k { color: var(--c-bad); }
.cim .c-opt:disabled { opacity: 1; cursor: default; }
.c-expl { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s var(--c-ease); }
.c-expl.show { grid-template-rows: 1fr; }
.c-expl > div { overflow: hidden; }
.c-expl .in { padding: 4px 0 0; color: var(--c-body); font-size: 16.5px; }
.c-expl .in b { display: block; color: var(--c-ink); font-weight: 800; }
.c-qnav:empty { display: none; }
@media (prefers-reduced-motion: no-preference) {
  .c-opt.wrong:not(.still) { animation: c-nudge .34s var(--c-ease); }
  .c-opt.right:not(.still) { animation: c-pop .3s var(--c-ease); }
  @keyframes c-nudge { 25% { transform: translateX(-6px); } 70% { transform: translateX(5px); } }
  @keyframes c-pop { 50% { transform: scale(1.02); } }
}
.c-session > [id="c-step"] { display: grid; gap: 22px; }
.c-recall { display: grid; gap: 18px; padding-top: 20px; }
.c-recall h2 { font-size: 30px; font-weight: 800; line-height: 1.3; }
.c-recall-hint { color: var(--c-sub); font-size: 16px; }
.c-done { text-align: center; display: grid; gap: 12px; padding-top: 50px; justify-items: center; }
.c-done .k { font-weight: 700; color: var(--c-sub); font-size: 16px; }
.c-done .big { font-size: 96px; font-weight: 800; letter-spacing: -.06em; line-height: 1; }
.c-done .big small { font-size: 32px; color: var(--c-sub); letter-spacing: -.02em; }
.c-done p { color: var(--c-sub); font-size: 16.5px; }
.c-done .c-sub2 { font-size: 14.5px; }
.c-done > .c-btn, .c-done > .c-col2 { margin-top: 14px; width: 100%; }
.c-verdict { font-size: 15px; font-weight: 800; padding: 3px 12px; border-radius: 8px; }
.c-verdict.ok { background: var(--c-lime); color: var(--c-lime-ink) !important; }
.c-verdict.bad { background: var(--c-bad-soft); }

/* ---------- 공부 · 기록 목록 ---------- */
.c-list { padding-top: 30px; display: grid; gap: 28px; }
.c-list h1, .c-exam h1 { font-size: 30px; font-weight: 800; line-height: 1.3; }
.c-list > .c-shead + h1, .c-exam > .c-shead + h1 { margin-top: -14px; }
.c-grp { display: grid; }
.c-grp .gh { font-size: 14px; font-weight: 700; color: var(--c-sub); padding-bottom: 6px; display: flex; justify-content: space-between; gap: 10px; }
.c-row { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 15px 0 !important; border-top: 1px solid var(--c-line); text-align: left; width: 100%; }
.c-row .n { font-size: 14px; font-weight: 700; color: var(--c-faint); }
.c-row b { font-size: 17px; font-weight: 650; line-height: 1.5; }
.c-row .p { font-size: 14.5px; font-weight: 700; color: var(--c-sub); display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.c-row.now b::after { content: "오늘"; margin-left: 8px; font-size: 12px; font-weight: 800; background: var(--c-lime); color: var(--c-lime-ink); padding: 2px 7px; border-radius: 6px; vertical-align: 2px; letter-spacing: 0; }
a.c-row:hover b, button.c-row:hover b { text-decoration: underline; text-underline-offset: 4px; }
.c-row.static { cursor: default; }
.c-row.cur b { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.c-heat { padding-top: 10px; border-top: 1px solid var(--c-line); }
.c-grid7 { display: grid; grid-template-rows: repeat(7, 1fr); grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 4px; }
.c-grid7 i { display: block; aspect-ratio: 1; border-radius: 4px; background: var(--c-soft); }
.c-grid7 .l1 { background: color-mix(in srgb, var(--c-ink) 22%, var(--c-soft)); }
.c-grid7 .l2 { background: color-mix(in srgb, var(--c-ink) 45%, var(--c-soft)); }
.c-grid7 .l3 { background: color-mix(in srgb, var(--c-ink) 70%, var(--c-soft)); }
.c-grid7 .l4 { background: var(--c-ink); }
.c-grid7 .f { background: transparent; }
.c-grid7 .now { outline: 2px solid var(--c-lime); outline-offset: 1px; }
.c-strat { border-top: 1px solid var(--c-line); padding-top: 12px; }
.c-strat summary { cursor: pointer; font-size: 15px; font-weight: 700; color: var(--c-sub); list-style: none; }
.c-strat summary::-webkit-details-marker { display: none; }
.c-strat summary::after { content: " +"; }
.c-strat[open] summary::after { content: " −"; }
.c-strat[open] summary { margin-bottom: 10px; }
.c-strat .c-text { font-size: 16px; }
.c-figs { list-style: none; margin: 0; padding: 0; display: grid; gap: 36px; }
.c-figs li { display: grid; gap: 10px; border-top: 1px solid var(--c-line); padding-top: 14px; }
.c-figs .gh { display: flex; justify-content: space-between; gap: 10px; font-size: 14px; font-weight: 700; color: var(--c-sub); }
.c-figs h2 { font-size: 22px; font-weight: 800; line-height: 1.35; }

/* 목차 판 (dialog) */
.c-sheet { width: min(520px, calc(100vw - 32px)); max-height: min(78dvh, 720px); padding: 20px 22px 12px; border: 0; border-radius: 24px; background: var(--c-card); color: var(--c-ink); font-family: var(--c-font); box-shadow: 0 30px 80px rgba(0, 0, 0, .22); overflow: auto; }
.c-sheet::backdrop { background: color-mix(in srgb, var(--c-bg) 60%, transparent); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.c-sheet-h { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-bottom: 8px; font-size: 18px; font-weight: 800; letter-spacing: -.02em; }
.c-toc-l { display: grid; }
.c-toc .c-row b { font-size: 16px; }
.c-toc .c-strat { margin-bottom: 8px; }

/* ---------- 시험 ---------- */
.c-exam { padding-top: 30px; display: grid; gap: 14px; }
.c-exam > h1 { margin-bottom: 10px; }
.c-big { text-align: left; background: var(--c-card); border: 1.5px solid var(--c-line); border-radius: 22px; padding: 22px 24px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 16px; align-items: center; }
.c-big:hover { border-color: var(--c-ink); }
.c-big b { font-size: 21px; font-weight: 800; letter-spacing: -.03em; line-height: 1.4; }
.c-big span { font-size: 15px; color: var(--c-sub); font-weight: 500; grid-column: 1; line-height: 1.5; }
.c-big .arrow { grid-row: 1 / span 2; grid-column: 2; width: 44px; height: 44px; border-radius: 50%; background: var(--c-soft); color: var(--c-ink); display: grid; place-items: center; font-weight: 800; transition: background .2s, transform .25s var(--c-ease); }
.c-big:hover .arrow { background: var(--c-lime); color: var(--c-lime-ink); transform: translateX(3px); }
.c-big.hot { border-color: var(--c-ink); }
.c-big.hot .arrow { background: var(--c-lime); color: var(--c-lime-ink); }
.c-big[aria-disabled="true"] { opacity: .55; }
.c-field { display: grid; gap: 8px; font-size: 15px; font-weight: 700; color: var(--c-sub); }
.c-field select { font: 600 17px var(--c-font); color: var(--c-ink); background: var(--c-card); border: 1.5px solid var(--c-line); border-radius: 16px; padding: 14px 16px; width: 100%; min-width: 0; }
.c-field select:focus-visible { border-color: var(--c-ink); outline: none; }
.c-seg { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.c-seg button { padding: 13px 0 !important; border-radius: 14px; border: 1.5px solid var(--c-line) !important; background: var(--c-card) !important; font-size: 16px; font-weight: 700; color: var(--c-ink); }
.c-seg button[aria-pressed="true"] { border-color: var(--c-ink) !important; background: var(--c-ink) !important; color: var(--c-bg); }
.c-exam > .c-go { margin-top: 10px; }
.c-spec { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--c-line); }
.c-spec > div { padding-top: 16px; display: grid; }
.c-spec > div + div { padding-left: 16px; border-left: 1px solid var(--c-line); }
.c-spec .k { font-size: 13.5px; color: var(--c-sub); font-weight: 600; }
.c-spec .v { font-size: 36px; font-weight: 800; letter-spacing: -.04em; line-height: 1.3; }
.c-spec .v small { font-size: 16px; color: var(--c-sub); }
.cm-bar { display: flex; align-items: center; gap: 14px; }
.cm-timer { font-size: 26px; font-weight: 800; letter-spacing: -.02em; min-width: 4.2ch; }
.cm-timer.low { color: var(--c-bad); }
.cm-ans { flex: 1; font-size: 15px; color: var(--c-sub); font-weight: 600; }
.cm-ans b { color: var(--c-ink); }
.cm-map { border-top: 1px solid var(--c-line); padding-top: 12px; }
.cm-map summary { cursor: pointer; font-weight: 700; font-size: 15px; color: var(--c-sub); display: flex; justify-content: space-between; list-style: none; }
.cm-map summary::-webkit-details-marker { display: none; }
.cm-grp { display: grid; gap: 6px; margin-top: 12px; }
.cm-grp .k { font-size: 13.5px; font-weight: 600; color: var(--c-sub); }
.cm-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(34px, 1fr)); gap: 5px; }
.cm-grid button { min-height: 34px; border-radius: 9px; border: 1.5px solid transparent !important; background: var(--c-soft) !important; color: var(--c-sub); font-size: 12.5px; font-weight: 700; }
.cm-grid button.a { background: var(--c-ink) !important; color: var(--c-bg); }
.cm-grid button.cur { border-color: var(--c-ink) !important; color: var(--c-ink); }
.cm-grid button.a.cur { border-color: var(--c-lime) !important; color: var(--c-bg); }
.cm-res { gap: 22px; }
.cm-res .c-done { padding-top: 10px; }
.cm-w { display: grid; gap: 12px; padding: 18px 0; border-top: 1px solid var(--c-line); }
.cm-w .c-opt { padding: 12px 14px !important; font-size: 15.5px; }
/* 실전 CBT (cbt.js) — 넓으면 문제 | 번호판 두 칸, 폰은 번호판이 아래로 */
/* CBT 푸는 화면 (2026-11-02) — 문제가 주인공: 읽기 칸이 넓게(가운데 최대 760px), 번호판은 오른쪽 얇은 칸(300px) · B 로 숨김 · 폰은 바텀시트 */
.c-col:has(.cb-run) { max-width: 1320px; }
.cb-run { display: grid; grid-template-columns: minmax(0, 1fr); grid-template-areas: "bar" "main"; column-gap: 32px; padding-top: 6px; }
.cb-bar { grid-area: bar; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--c-line); font-size: 14px; }
.cb-bar .cm-timer { font-size: 18px; font-weight: 750; }
.cb-bar .cm-ans { font-size: 14px; }
.cb-pad { font-size: 13.5px; font-weight: 650; color: var(--c-sub); padding: 6px 10px !important; border-radius: 10px; }
.cb-pad:hover { color: var(--c-ink); background: var(--c-soft) !important; }
.cb-bar .c-btn.sm { padding: 6px 14px; font-size: 14px; }
.cb-no { font-weight: 750; font-size: 14px; color: var(--c-sub); }
.cb-main { grid-area: main; min-width: 0; }
.cb-read { max-width: 760px; margin: 0 auto; display: grid; gap: 22px; padding-top: 28px; }
/* 위 한 줄: 몇 번 · 과목 · 장 */
.cb-meta { font-size: 13.5px; font-weight: 600; color: var(--c-sub); margin: 0 0 -10px; }
.cb-meta b { color: var(--c-ink); }
/* 문제: 굵기는 semibold, 한국어는 낱말 단위로 줄바꿈 */
.cb-q { font-size: 23px; font-weight: 620; line-height: 1.6; letter-spacing: -.02em; word-break: keep-all; margin: 0; }
.cb-opts { gap: 10px; }
.cb-opts .c-opt { width: 100%; font-size: 18.5px; line-height: 1.65; font-weight: 450; padding: 16px 20px !important; grid-template-columns: 28px minmax(0, 1fr); gap: 14px; align-items: start; word-break: keep-all; color: var(--c-body); }
.cb-opts .c-opt .k { width: 26px; height: 26px; margin-top: 2px; border-radius: 50%; border: 1.5px solid var(--c-line); display: grid; place-items: center; font-size: 13px; font-weight: 700; color: var(--c-sub); }
/* 마우스 올림은 살짝만, 고른 보기는 진한 테두리 + 옅은 라임 바탕 */
.cb-opts .c-opt:hover:not(:disabled) { border-color: var(--c-faint) !important; }
.cb-opts .c-opt.pick { border-color: var(--c-ink) !important; background: var(--c-lime-soft) !important; color: var(--c-ink); }
.cb-opts .c-opt.pick .k { background: var(--c-ink); border-color: var(--c-ink); color: var(--c-bg); }
/* 아래 막대: 읽기 칸 바닥에 붙어 있어요 */
.cb-foot { position: sticky; bottom: 0; background: var(--c-bg); border-top: 1px solid var(--c-line); padding: 12px 0 14px; display: grid; gap: 8px; margin-top: 6px; z-index: 2; }
.cb-nav { display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; }
.cb-nav .c-btn { padding: 11px 16px; font-size: 15.5px; }
.cb-keys { margin: 0; font-size: 12.5px; color: var(--c-faint); text-align: center; line-height: 1.5; }
.cb-keys kbd { font: 600 11.5px var(--c-font); border: 1px solid var(--c-line); border-radius: 5px; padding: 0 5px; color: var(--c-sub); background: var(--c-card); }
.cb-flag.on { border-color: var(--c-bad) !important; color: var(--c-bad); }
/* 번호판: 과목별 작은 라벨 + 10칸 격자 · 답함 = 검정 칸, 표시 = 빨간 점, 지금 = 라임 테두리 */
.cb-side { display: grid; gap: 2px; align-content: start; }
.cb-legend { display: flex; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--c-sub); font-weight: 600; line-height: 1.5; }
.cb-legend i { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 4px; background: var(--c-soft); border: 1px solid var(--c-line); vertical-align: -1px; }
.cb-legend i.a { background: var(--c-ink); border-color: var(--c-ink); }
.cb-legend i.f, .cb-grid button.f::after { background: var(--c-bad); border-color: var(--c-bad); }
.cb-side .cm-grp { gap: 4px; margin-top: 10px; }
.cb-side .cm-grp .k { font-size: 11.5px; line-height: 1.4; color: var(--c-faint); }
.cb-grid { grid-template-columns: repeat(10, 1fr); gap: 2px; }
.cb-grid button { position: relative; min-height: 0; aspect-ratio: 1; border-radius: 6px; font-size: 11px; font-weight: 650; line-height: 1; padding: 0; }
.cb-grid button.cur { border-color: var(--c-lime) !important; box-shadow: 0 0 0 1.5px var(--c-ink); color: var(--c-ink); }
.cb-grid button.f::after { content: ""; position: absolute; top: 2px; right: 2px; width: 5px; height: 5px; border-radius: 50%; }
.cb-scrim { display: none; }
@media (min-width: 900px) {
  .cb-run { grid-template-columns: minmax(0, 1fr) 300px; grid-template-areas: "bar bar" "main side"; }
  .cb-side { grid-area: side; position: sticky; top: 12px; border-left: 1px solid var(--c-line); padding: 18px 0 0 14px; }
  .cb-run.hide { grid-template-columns: minmax(0, 1fr); grid-template-areas: "bar" "main"; }
  .cb-run.hide .cb-side { display: none; }
}
/* 폰: 한 줄, 번호판은 '번호판' 버튼으로 아래에서 올라오는 시트 */
@media (max-width: 899px) {
  .cb-bar { gap: 10px; flex-wrap: wrap; }
  .cb-read { padding-top: 18px; gap: 18px; }
  .cb-q { font-size: 20px; }
  .cb-opts .c-opt { font-size: 17px; padding: 14px 16px !important; gap: 12px; }
  .cb-keys { display: none; }
  .cb-side { position: fixed; left: 0; right: 0; bottom: 0; z-index: 41; background: var(--c-card); border-radius: 18px 18px 0 0; box-shadow: var(--c-shadow); padding: 16px 18px calc(18px + env(safe-area-inset-bottom)); max-height: 72vh; overflow: auto; transform: translateY(105%); transition: transform .25s var(--c-ease); }
  .cb-grid button { font-size: 12.5px; }
  .cb-run.sheet .cb-side { transform: none; }
  .cb-run.sheet .cb-scrim { display: block; position: fixed; inset: 0; z-index: 40; background: rgba(0, 0, 0, .35); }
}
@media (prefers-reduced-motion: reduce) { .cb-side { transition: none; } }
.cb-row .hot { color: var(--c-ink); font-weight: 700; }
.cb-res .gh .c-seg { grid-template-columns: auto auto; } .cb-res .gh .c-seg button { padding: 6px 12px !important; font-size: 13.5px; }
.cb-rv.right .c-qstem { color: var(--c-sub); }
.c-cbt { display: grid; gap: 8px; border-top: 1px solid var(--c-line); padding-top: 14px; }
.c-cbt .t { font-size: 13.5px; font-weight: 700; color: var(--c-sub); display: flex; justify-content: space-between; align-items: center; gap: 8px; }

/* 숫자 외우기 */
.ct-deck { position: relative; width: 100%; height: 300px; touch-action: pan-y; perspective: 1200px; margin: 6px 0 4px; }
.ct-fc { position: absolute; inset: 0; cursor: grab; user-select: none; -webkit-user-select: none; transition: transform .45s var(--c-ease), opacity .3s; border-radius: 24px; }
.ct-fc .inner { position: absolute; inset: 0; transform-style: preserve-3d; transition: transform .55s var(--c-ease); }
.ct-fc.back .inner { transform: rotateY(180deg); }
.ct-fc .face { position: absolute; inset: 0; border-radius: 24px; background: var(--c-card); border: 1.5px solid var(--c-line); display: grid; place-content: center; justify-items: center; text-align: center; padding: 30px; gap: 10px; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.ct-fc .face.b { transform: rotateY(180deg); background: var(--c-ink); border-color: var(--c-ink); color: var(--c-bg); }
.ct-fc .q { font-size: 14px; font-weight: 700; color: var(--c-sub); }
.ct-fc .face.b .q { color: color-mix(in srgb, var(--c-bg) 70%, transparent); }
.ct-fc .face.b .c-tag { border-color: var(--c-bg); color: var(--c-bg); }
.ct-fc .big { font-size: 25px; font-weight: 800; line-height: 1.4; letter-spacing: -.03em; max-width: 18em; }
.ct-fc .tap { font-size: 13.5px; color: var(--c-faint); font-weight: 600; }
.ct-fc.under { transform: translateY(14px) scale(.95); opacity: .5; pointer-events: none; }
.ct-fc.dragging { transition: none; cursor: grabbing; }
.ct-fc .stamp { position: absolute; top: 18px; z-index: 2; font-size: 14px; font-weight: 800; padding: 3px 11px; border-radius: 9px; opacity: 0; pointer-events: none; }
.ct-fc .stamp.k { left: 18px; background: var(--c-lime); color: var(--c-lime-ink); }
.ct-fc .stamp.u { right: 18px; background: var(--c-bad); color: #fff; }
.ct-done { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 12px; border-radius: 24px; border: 1.5px solid var(--c-line); background: var(--c-card); padding: 30px; }
.ct-done b { font-size: 24px; font-weight: 800; }
.ct-done span { color: var(--c-sub); }

/* ---------- 처음 안내 ---------- */
.c-intro { position: fixed; inset: 0; z-index: 80; background: color-mix(in srgb, var(--c-bg) 70%, transparent); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); display: grid; place-items: center; padding: 20px; }
.c-intro[hidden] { display: none; }
.c-isheet { width: min(440px, 100%); background: var(--c-card); border-radius: 28px; padding: 30px 28px 24px; display: grid; gap: 18px; box-shadow: 0 30px 80px rgba(0, 0, 0, .18); }
.c-isheet .pips { display: flex; gap: 6px; }
.c-isheet .pips i { width: 18px; height: 5px; border-radius: 3px; background: var(--c-line); transition: background .3s, width .3s var(--c-ease); }
.c-isheet .pips i.on { background: var(--c-ink); width: 30px; }
.c-istep { display: grid; gap: 14px; }
.c-istep .n { font-size: 14px; font-weight: 800; color: var(--c-lime-text); }
.c-istep h2 { font-size: 28px; font-weight: 800; line-height: 1.3; }
.c-istep p { color: var(--c-body); }
.c-isheet .acts { display: flex; justify-content: space-between; align-items: center; }
.c-illu { height: 120px; border-radius: 18px; background: var(--c-soft); display: grid; place-items: center; font-size: 46px; font-weight: 800; letter-spacing: -.05em; }
.c-illu.lime { background: var(--c-lime); color: var(--c-lime-ink); font-size: 22px; letter-spacing: -.02em; }

/* ---------- AI 튜터 옆 패널 ---------- */
.c-ai { position: fixed; right: 16px; top: 16px; bottom: 16px; z-index: 60; width: var(--ai-w, 440px); display: flex; flex-direction: column; gap: 10px; padding: 14px 16px 14px 22px; border-radius: 20px; background: var(--c-card); border: 1px solid var(--c-line); box-shadow: 0 24px 60px -20px rgba(0, 0, 0, .3); font-size: 16px; line-height: 1.7; }
.c-ai[hidden] { display: none; }
.c-ai-grip { position: absolute; left: -8px; top: 0; bottom: 0; width: 16px; display: grid; place-items: center; cursor: col-resize; touch-action: none; }
.c-ai-grip i { width: 4px; height: 48px; border-radius: 2px; background: var(--c-line); transition: background .15s; }
.c-ai-grip:hover i, .c-ai-grip:focus-visible i, .ai-drag .c-ai-grip i { background: var(--c-ink); }
.ai-drag, .ai-drag * { user-select: none !important; -webkit-user-select: none !important; }
.ai-drag { transition: none !important; }
.c-ai-h { display: flex; align-items: center; gap: 8px; }
.c-ai-h > b { font-size: 16px; font-weight: 800; letter-spacing: -.02em; margin-right: auto; white-space: nowrap; }
.c-ai-sz { display: inline-flex; border: 1px solid var(--c-line); border-radius: 10px; overflow: hidden; }
.c-ai-sz button { padding: 4px 9px !important; font-size: 12.5px; font-weight: 700; color: var(--c-sub); }
.c-ai-sz button + button { border-left: 1px solid var(--c-line) !important; }
.c-ai-sz button[aria-pressed="true"] { background: var(--c-ink) !important; color: var(--c-bg); }
.c-ai-x { width: 32px; height: 32px; border-radius: 10px; color: var(--c-sub); font-size: 15px; display: grid; place-items: center; }
.c-ai-x:hover { background: var(--c-soft) !important; color: var(--c-ink); }
.c-ai-ctx { font-size: 13px; font-weight: 600; color: var(--c-sub); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding-bottom: 8px; border-bottom: 1px solid var(--c-line); }
.c-ai-ctx:empty { display: none; }
.c-ai-log { flex: 1; min-height: 0; overflow: auto; display: grid; align-content: start; gap: 14px; padding: 4px 2px; overscroll-behavior: contain; }
.c-ai-empty { color: var(--c-sub); font-size: 15px; padding: 10px 0; }
.c-ai-msg.me { justify-self: end; max-width: 88%; background: var(--c-soft); border-radius: 16px 16px 4px 16px; padding: 9px 14px; }
.c-ai-msg.me p { white-space: pre-wrap; font-size: 15.5px; }
.c-ai-msg.bot .md { font-size: 15.5px; max-width: none; color: var(--c-body); }
.c-ai-msg.bot .md strong { color: var(--c-ink); }
.c-ai-msg.err { border-left: 3px solid var(--c-bad); padding: 2px 0 2px 12px; font-size: 14.5px; }
.c-ai-msg.err b { color: var(--c-bad); display: block; }
.c-ai-msg.err p { color: var(--c-sub); }
/* 근거: 답 속 [1] 링크 · 아래 칩 (카드 → #/cim/study/<장>/<번호>, 노트 → #/notes/<id>) */
.c-cite { display: inline-block; min-width: 1.35em; padding: 0 .3em; margin: 0 1px; border-radius: 6px; background: var(--c-soft); color: var(--c-ink); font-size: .72em; font-weight: 700; line-height: 1.5; text-align: center; vertical-align: .25em; text-decoration: none; }
a.c-cite:hover { background: var(--c-lime); color: var(--c-lime-ink); }
.c-ai-src { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 8px; }
.c-ai-src > span { font-size: 12.5px; font-weight: 700; color: var(--c-faint); margin-right: 2px; }
.c-src { display: inline-flex; align-items: center; gap: 6px; max-width: 100%; padding: 4px 10px 4px 5px; border: 1px solid var(--c-line); border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--c-body); text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.c-src b { display: inline-grid; place-items: center; min-width: 20px; height: 20px; border-radius: 999px; background: var(--c-soft); color: var(--c-ink); font-size: 11.5px; }
a.c-src:hover { border-color: var(--c-ink); color: var(--c-ink); }
.c-ai-dots { display: inline-flex; gap: 4px; padding: 8px 0; }
.c-ai-dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--c-faint); }
@media (prefers-reduced-motion: no-preference) {
  .c-ai-dots i { animation: c-blink 1s infinite; } .c-ai-dots i:nth-child(2) { animation-delay: .15s; } .c-ai-dots i:nth-child(3) { animation-delay: .3s; }
  @keyframes c-blink { 50% { opacity: .25; } }
}
.c-ai-quick { display: flex; flex-wrap: wrap; gap: 6px; }
.c-ai-quick:empty { display: none; }
.c-chip { padding: 6px 12px !important; border-radius: 999px; border: 1px solid var(--c-line) !important; font-size: 13.5px; font-weight: 600; color: var(--c-body); }
.c-chip:hover { border-color: var(--c-ink) !important; color: var(--c-ink); }
.c-chip:active { background: var(--c-lime) !important; color: var(--c-lime-ink); border-color: var(--c-lime) !important; }
.c-ai-form { display: flex; gap: 8px; align-items: flex-end; border: 1.5px solid var(--c-line); border-radius: 16px; padding: 6px 6px 6px 14px; background: var(--c-bg); }
.c-ai-form:focus-within { border-color: var(--c-ink); }
.c-ai-form textarea { flex: 1; min-width: 0; resize: none; border: 0; outline: none; background: transparent; color: var(--c-ink); font: 450 15.5px/1.6 var(--c-font); padding: 6px 0; max-height: 140px; }
.c-ai-send, .c-ai-stop { flex: none; border-radius: 12px; padding: 8px 14px !important; font-size: 14.5px; font-weight: 800; }
.c-ai-send { background: var(--c-lime) !important; color: var(--c-lime-ink) !important; }
.c-ai-stop { background: var(--c-ink) !important; color: var(--c-bg) !important; }
.c-ai-send[hidden], .c-ai-stop[hidden] { display: none; }
@media (min-width: 1100px) { .cim.ai-on { padding-right: calc(var(--ai-w, 440px) + 40px); } }

/* ---------- 그림 (figs.js) — 흑백 + 라임 글씨색 ---------- */
.c-fig { border-top: 1px solid var(--c-line); padding-top: 14px; }
.cf { margin: 0; display: grid; gap: 14px; grid-template-columns: minmax(0, 1fr); }
.cf-pic { border-radius: 16px; background: var(--c-soft); padding: 12px 10px 6px; overflow: hidden; }
.cf-svg { display: block; width: 100%; height: auto; }
.cf-svg text { font: 600 11px var(--c-font); fill: var(--c-sub); font-variant-numeric: tabular-nums; }
.cf-svg .grid { stroke: var(--c-line); stroke-width: 1; }
.cf-svg .ax { stroke: var(--c-faint); stroke-width: 1.2; }
.cf-svg .main { fill: none; stroke: var(--c-ink); stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.cf-svg .acc { fill: none; stroke: var(--c-lime-text); stroke-width: 2.4; stroke-linecap: round; }
.cf-svg .acc2 { fill: none; stroke: var(--c-bad); stroke-width: 2.4; stroke-linecap: round; }
.cf-svg .dash { stroke-dasharray: 6 5; }
.cf-svg .dot, .cf-svg .dotok { fill: var(--c-lime-text); stroke: var(--c-soft); stroke-width: 2.5; }
.cf-svg .dotbad { fill: var(--c-bad); stroke: var(--c-soft); stroke-width: 2.5; }
.cf-ctl { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.cf-ctl:empty { display: none; }
.cf-steps { display: inline-flex; align-items: center; gap: 8px; }
.cf-steps button { width: 40px; height: 40px; border-radius: 12px; background: var(--c-soft) !important; color: var(--c-ink); font: 700 20px/1 var(--c-font); }
.cf-steps button:active:not(:disabled) { transform: scale(.94); }
.cf-sn { font-size: 14.5px; font-weight: 700; min-width: 3.4em; text-align: center; font-variant-numeric: tabular-nums; }
.cf-dots { display: inline-flex; gap: 4px; }
.cf-dots i { width: 16px; height: 6px; border-radius: 3px; background: var(--c-line); transition: background .25s; }
.cf-dots i.on { background: var(--c-ink); }
.cf-sl { display: inline-flex; align-items: center; gap: 12px; font-size: 14.5px; font-weight: 600; color: var(--c-sub); min-width: 0; flex: 1 1 240px; }
.cf-k { white-space: nowrap; }
.cf-sl output { font-size: 14.5px; font-weight: 800; color: var(--c-ink); min-width: 4.5em; white-space: nowrap; font-variant-numeric: tabular-nums; }
.cf-sl input[type="range"] { -webkit-appearance: none; appearance: none; flex: 1; min-width: 80px; height: 28px; background: transparent; cursor: pointer; --p: 50%; }
.cf-sl input[type="range"]::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: linear-gradient(90deg, var(--c-ink) var(--p), var(--c-line) var(--p)); }
.cf-sl input[type="range"]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--c-line); }
.cf-sl input[type="range"]::-moz-range-progress { height: 6px; border-radius: 3px; background: var(--c-ink); }
.cf-sl input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -8px; border-radius: 50%; background: #fff; border: 0; box-shadow: 0 1px 4px rgba(0, 0, 0, .3), 0 0 0 1px rgba(0, 0, 0, .06); }
.cf-sl input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: #fff; border: 0; box-shadow: 0 1px 4px rgba(0, 0, 0, .3); }
.cf-chips { display: flex; flex-wrap: wrap; gap: 6px; width: 100%; }
.cf-chip { padding: 8px 14px !important; border-radius: 999px; background: var(--c-soft) !important; color: var(--c-sub); font: 600 14.5px/1.4 var(--c-font); }
.cf-chip[aria-pressed="true"] { background: var(--c-ink) !important; color: var(--c-bg); }
.cf-chk { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--c-soft); font-size: 14.5px; font-weight: 600; color: var(--c-sub); cursor: pointer; }
.cf-chk input { accent-color: var(--c-ink); }
.cf-chk:has(input:checked) { background: var(--c-ink); color: var(--c-bg); }
.cf-read { font-size: 15.5px; line-height: 1.75; font-weight: 500; color: var(--c-body); padding: 0 0 0 14px; border-left: 3px solid var(--c-lime); overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.cf-read:empty { display: none; }
.cf-read b { color: var(--c-ink); font-weight: 800; }
.cf-warn { color: var(--c-bad); font-weight: 700; }
.cf-cap { font-size: 16px; line-height: 1.75; color: var(--c-body); }
.cf-cap b { color: var(--c-ink); }
.cf-calc { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; }
.cf-calc label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--c-sub); min-width: 0; }
.cf-calc input { width: 100%; font: 600 16px var(--c-font); color: var(--c-ink); background: var(--c-soft) !important; border: 0; border-radius: 10px; padding: 9px 11px; }

/* ---------- 폭 ---------- */
@media (max-width: 760px) {
  .c-ai { left: 8px; right: 8px; top: auto; bottom: 8px; width: auto; height: var(--ai-h, 62dvh); padding: 22px 14px 12px; border-radius: 22px 22px 18px 18px; }
  .c-ai-grip { left: 0; right: 0; top: 0; bottom: auto; width: auto; height: 22px; cursor: row-resize; }
  .c-ai-grip i { width: 48px; height: 4px; }
  .c-top .c-sync { display: none; }
}
@media (max-width: 480px) {
  .cim { font-size: 17px; padding: 0 16px; }
  .c-top { margin: 0 -16px; padding: 0 16px; }
  .c-top .c-ghost { padding: 6px 7px; font-size: 14px; }
  .c-kp h2, .c-plan h2, .c-recall h2 { font-size: 26px; }
  .c-qstem { font-size: 20px; }
  .c-tabbar a { padding: 10px 16px; }
  .c-go { padding: 20px 22px; font-size: 19px; }
  .c-subj > div + div { padding-left: 12px; }
  .c-subj .v { font-size: 26px; }
  .c-big { padding: 20px; }
  .c-done .big { font-size: 80px; }
  .ct-deck { height: 280px; }
  .ct-fc .big { font-size: 22px; }
  .cf-calc { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .cim *, .cim *::before, .cim *::after { transition-duration: 0s !important; animation: none !important; }
}
/* 화면 안에 'AI에게 묻기'가 있으면(카드 · 문제) 머리의 것은 숨겨요 — 같은 버튼 두 개 없이 */
.cim:has(.c-v [data-ai-open]) .c-top [data-ai-open] { display: none; }
/* ---------- 쉽게 보기 (먼저) · 교재 쪽 · 원문 접기 — 2026-10-26 ---------- */
.c-page { font-size: 15px; font-weight: 800; color: var(--c-ink); background: var(--c-soft); border-radius: 999px; padding: 2px 12px; width: fit-content; }
.c-easy { border-left: 3px solid var(--c-lime); padding: 2px 0 2px 16px; display: grid; gap: 10px; }
.c-easy > .bl { font-size: 13px; font-weight: 800; color: var(--c-lime-text); }
.c-easy-l { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.c-easy-l li { font-size: 19px; line-height: 1.65; color: var(--c-ink); font-weight: 520; }
.c-easy-an, .c-easy-ex { color: var(--c-body); font-size: 16.5px; }
.c-easy-an span, .c-easy-ex span { font-size: 13px; font-weight: 800; color: var(--c-sub); margin-right: 4px; }
.c-easy-pt { background: var(--c-lime-soft); border-radius: 14px; padding: 12px 16px; }
.c-easy-pt b { font-size: 13px; font-weight: 800; color: var(--c-lime-text); }
.c-easy-pt ul { margin: 4px 0 0; padding-left: 18px; display: grid; gap: 2px; font-size: 16px; color: var(--c-ink); }
.c-orig { border-top: 1px solid var(--c-line); padding-top: 10px; }
.c-orig > summary { cursor: pointer; font-size: 15px; font-weight: 700; color: var(--c-sub); list-style: none; padding: 6px 0; }
.c-orig > summary::-webkit-details-marker { display: none; }
.c-orig > summary::before { content: "▸ "; }
.c-orig[open] > summary::before { content: "▾ "; }
.c-orig[open] { display: grid; gap: 14px; }
.c-pace { font-size: 14px; color: var(--c-sub); margin-top: 4px; }
.c-pgs { color: var(--c-ink); }
.c-cont { margin: 4px 0 8px; }
.c-ai-more { margin-top: 8px; }
.c-ai-sep { font-size: 12.5px; font-weight: 700; color: var(--c-faint); text-align: center; border-top: 1px solid var(--c-line); padding-top: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* CBT 1~10회: 시간 없음 · 바로 채점 (2026-11-02) */
.cm-timer.free { color: var(--c-ink-3, #8a8a8a); font-size: 20px; }
.cb-tag { margin-left: 8px; padding: 1px 7px; border-radius: 999px; font-size: 11px; font-weight: 600; color: var(--c-ink-3, #8a8a8a); border: 1px solid var(--c-line, #333); }
.cb-tag.free { color: var(--c-ink); }
.cb-mode { display: grid; gap: 8px; margin: 16px 0; }
.cb-mode label { display: flex; gap: 10px; align-items: baseline; padding: 12px 14px; border: 1px solid var(--c-line, #333); border-radius: 12px; cursor: pointer; }
.cb-mode label:has(input:checked) { border-color: var(--c-ink); background: var(--c-soft); }
.cb-mode span { color: var(--c-ink-3, #8a8a8a); font-size: 14px; }
.cb-opts .c-opt.ok { border-color: var(--c-ok, #3fb950) !important; background: color-mix(in srgb, var(--c-ok, #3fb950) 14%, transparent) !important; }
.cb-opts .c-opt.bad { border-color: var(--c-bad, #f85149) !important; background: color-mix(in srgb, var(--c-bad, #f85149) 12%, transparent) !important; }
.cb-opts .c-opt:disabled { cursor: default; opacity: 1; }
.cb-ex { margin-top: 14px; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--c-line, #333); font-size: 17px; line-height: 1.65; word-break: keep-all; }
.cb-ex.ok b { color: var(--c-ok, #3fb950); }
.cb-ex.bad b { color: var(--c-bad, #f85149); }
.cb-ex p { margin: 6px 0 0; }

/* 번호판 단원 줄 (cbt.js): 왼쪽 단원 이름 · 오른쪽 번호. 어려운 단원 = 빨간 칸, ✓ = 넘겨도 되는 단원 */
.cb-chrow { display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 4px; align-items: start; }
.cb-ch { font-size: 11px; line-height: 1.3; color: var(--c-sub); font-weight: 600; padding-top: 3px; }
.cb-chrow.hard .cb-ch { color: var(--c-bad); }
.cb-chrow .cb-grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
.cb-side .cb-grid button.num.h { background: color-mix(in srgb, var(--c-bad) 28%, transparent); border-color: color-mix(in srgb, var(--c-bad) 55%, transparent); color: var(--c-ink) !important; background-color: color-mix(in srgb, var(--c-bad) 30%, var(--c-soft)) !important; }
.cb-side .cb-grid button.num.h.a { background: var(--c-bad) !important; border-color: var(--c-bad) !important; color: #fff !important; }
.cb-legend i.h { background: color-mix(in srgb, var(--c-bad) 45%, transparent); border-color: var(--c-bad); }
.cb-skip { color: var(--c-lime, #c6f432); font-weight: 800; margin-right: 3px; }
.cb-legend2 { margin-top: 2px; }
.cb-chrow { min-width: 0; } .cb-chrow .cb-grid { min-width: 0; } .cb-chrow .cb-grid button { min-width: 0; width: auto; }
.cb-side { overflow: visible; padding-right: 2px; }