/* Lignums Discover(코드명 ARBOR, 구 Prep) · 콘텐츠 스토어(홈·둘러보기·상세), 라이브러리, 리더, 출판 스튜디오.
   app.css 의 토큰(SEED 크기 + Lignums 색)만 쓴다. 카드는 1px 테두리로 나누고 그림자는 떠 있는 것에만.
   표지는 이미지가 없으면 글자로 만든다(과목 색 틴트 + 제목). 나이테 무늬는 로고 밖에서 쓰지 않는다. */

.mnav-sec { display: block; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--stroke-neutral-muted); font: var(--t3); font-weight: 700; color: var(--fg-neutral-subtle); }

/* ---------- 공통 ---------- */
.feats, .toc, .vlist, .checklist, .band ul, .sc .sum, .sc .qq ol, .unit-list { list-style: none; padding: 0; margin: 0; }
.spot .row-btns .btn { flex: none; }
.pp { padding-block: 32px 96px; }
.pp-h { display: flex; align-items: flex-end; gap: 16px; margin-bottom: 16px; }
.pp-h h2 { font: var(--t9); font-weight: 700; letter-spacing: -.01em; }
.pp-h .sub { font: var(--t4); color: var(--fg-neutral-subtle); }
.pp-h .more { margin-left: auto; font: var(--t4); font-weight: 700; color: var(--fg-neutral-muted); display: inline-flex; align-items: center; gap: 2px; }
.pp-h .more:hover { color: var(--fg-neutral); }
.pp-sec { margin-top: 48px; }
.pp-sec:first-child { margin-top: 0; }
.mu { color: var(--fg-neutral-subtle); }
.tnum { font-variant-numeric: tabular-nums; }
.honest { display: inline-flex; align-items: center; gap: 6px; font: var(--t3); color: var(--fg-neutral-subtle); }
.honest::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--fg-warning); flex: none; }
.dim { opacity: .5; }

/* ---------- 표지 ---------- */
.cover { --c: var(--fg-brand); position: relative; aspect-ratio: 3 / 4; border-radius: var(--r2); overflow: hidden; background: color-mix(in srgb, var(--c) 12%, var(--bg-layer-default)); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); isolation: isolate; }
.cover.kor { --c: var(--kor); } .cover.eng { --c: var(--eng); } .cover.math { --c: var(--math); }
.cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cover .cv-t { position: absolute; inset: 0; display: flex; flex-direction: column; padding: 12% 11% 10% 15%; }
.cover .cv-t::before { content: ""; position: absolute; left: 7%; top: 0; bottom: 0; width: 2px; background: color-mix(in srgb, var(--c) 45%, transparent); }
.cover .cv-k { font: var(--t2); font-weight: 700; color: var(--c); letter-spacing: .02em; }
.cover .cv-n { margin-top: 8%; font-size: 13px; line-height: 1.25; font-weight: 800; color: var(--fg-neutral); letter-spacing: -.02em; word-break: keep-all; overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.cover .cv-s { margin-top: 6%; font: var(--t1); color: var(--fg-neutral-muted); display: none; }
.cover .cv-p { margin-top: auto; font: var(--t1); font-weight: 700; color: var(--fg-neutral-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cover .cv-k { font: var(--t1); font-weight: 700; }
.cover-wrap { container-type: inline-size; }
@container (min-width: 150px) {
  .cover .cv-n { font-size: 17px; -webkit-line-clamp: 5; }
  .cover .cv-s { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font: var(--t2); }
  .cover .cv-k, .cover .cv-p { font: var(--t2); font-weight: 700; }
}
@container (min-width: 240px) {
  .cover .cv-n { font-size: 24px; }
  .cover .cv-k, .cover .cv-p { font: var(--t4); font-weight: 700; }
  .cover .cv-s { font: var(--t4); }
}

/* ---------- 교재 카드 ---------- */
.wgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: 28px 20px; }
.wcard { display: flex; flex-direction: column; gap: 10px; min-width: 0; border-radius: var(--r3); outline-offset: 4px; }
.wcard .cover { transition: transform var(--d4) var(--enter); }
.wcard:hover .cover { transform: translateY(-3px); }
.wcard .w-t { font: var(--t5); font-weight: 700; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: keep-all; }
.wcard .w-p { font: var(--t3); color: var(--fg-neutral-subtle); display: flex; align-items: center; gap: 4px; min-width: 0; }
.wcard .w-p span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wcard .w-m { display: flex; flex-wrap: wrap; gap: 4px; }
.vf { width: 14px; height: 14px; flex: none; color: var(--fg-brand); }
.owned-dot { display: inline-flex; align-items: center; gap: 4px; font: var(--t2); font-weight: 700; color: var(--fg-positive); }

/* 가로 선반 */
.shelf { position: relative; }
.shelf-row { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(150px, 176px); gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; scrollbar-width: thin; overscroll-behavior-x: contain; }
.shelf-row > * { scroll-snap-align: start; }
.shelf-nav { display: flex; gap: 6px; }
.shelf-nav .ib { width: 32px; height: 32px; border-radius: var(--full); box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak); display: grid; place-items: center; }
.shelf-nav .ib svg { width: 16px; height: 16px; }

/* ---------- 홈 ---------- */
.ph { background: var(--bg-layer-fill); border-bottom: 1px solid var(--stroke-neutral-muted); }
.ph-in { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: center; padding-block: 56px 48px; }
.ph h1 { font: var(--t14); font-weight: 800; letter-spacing: -.03em; word-break: keep-all; }
.ph h1 em { font-style: normal; color: var(--fg-brand); }
.ph .lead { margin-top: 16px; font: var(--t6); color: var(--fg-neutral-muted); max-width: 34em; word-break: keep-all; }
.psearch { margin-top: 28px; display: flex; align-items: center; gap: 10px; min-height: 60px; padding: 0 8px 0 20px; border-radius: var(--r4); background: var(--bg-layer-default); box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak), var(--shadow-floating); }
.psearch:focus-within { box-shadow: inset 0 0 0 2px var(--stroke-neutral-contrast), var(--shadow-floating); }
.psearch svg.i { width: 20px; height: 20px; color: var(--fg-neutral-subtle); flex: none; }
.psearch input { flex: 1; min-width: 0; border: 0; outline: none; background: none; font: var(--t6); color: var(--fg-neutral); }
.psearch input::placeholder { color: var(--fg-placeholder); }
.qchips { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.ph-side { display: grid; gap: 12px; }
.spot { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 20px; align-items: center; padding: 20px; border-radius: var(--r4); background: var(--bg-layer-default); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
.spot .eyebrow { margin-bottom: 6px; }
.spot h3 { font: var(--t7); font-weight: 700; word-break: keep-all; }
.spot p { margin-top: 6px; font: var(--t3); color: var(--fg-neutral-muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.spot .row-btns { margin-top: 12px; }
.statrow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.stat { padding: 14px 16px; border-radius: var(--r3); background: var(--bg-layer-default); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); display: flex; flex-direction: column; gap: 2px; }
.stat b { font: var(--t9); font-weight: 800; font-variant-numeric: tabular-nums; }
.stat span { font: var(--t3); color: var(--fg-neutral-subtle); display: inline-flex; align-items: center; gap: 6px; }
a.stat:hover { background: var(--bg-neutral-weak-alpha); }
.continue { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.cont { display: grid; grid-template-columns: 56px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 12px; border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
.cont:hover { background: var(--bg-neutral-weak-alpha); }
.cont .cover { border-radius: var(--r1_5); }
.cont .cover .cv-n { font-size: 9px; } .cont .cover .cv-k, .cont .cover .cv-s, .cont .cover .cv-p { display: none; }
.cont b { font: var(--t4); font-weight: 700; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cont .mu { font: var(--t3); }
.prog { height: 4px; border-radius: var(--full); background: var(--bg-neutral-weak); overflow: hidden; margin-top: 8px; }
.prog i { display: block; height: 100%; background: var(--fg-positive); border-radius: inherit; }
.subj-tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.subj-tile { --c: var(--fg-brand); display: flex; align-items: center; gap: 14px; padding: 20px; border-radius: var(--r4); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); background: color-mix(in srgb, var(--c) 7%, var(--bg-layer-default)); }
.subj-tile.kor { --c: var(--kor); } .subj-tile.eng { --c: var(--eng); } .subj-tile.math { --c: var(--math); }
.subj-tile:hover { background: color-mix(in srgb, var(--c) 12%, var(--bg-layer-default)); }
.subj-tile .k { width: 44px; height: 44px; border-radius: var(--r3); display: grid; place-items: center; font: var(--t6); font-weight: 800; color: var(--c); background: color-mix(in srgb, var(--c) 16%, var(--bg-layer-default)); }
.subj-tile b { font: var(--t6); font-weight: 700; display: block; }
.subj-tile span { font: var(--t3); color: var(--fg-neutral-subtle); }
.band { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.band > div { padding: 28px; border-radius: var(--r4); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); display: flex; flex-direction: column; gap: 10px; }
.band > div.fill { background: var(--bg-layer-fill); }
.band h3 { font: var(--t8); font-weight: 700; word-break: keep-all; }
.band p { font: var(--t4); line-height: 22px; color: var(--fg-neutral-muted); word-break: keep-all; }
.band ul { display: grid; gap: 6px; font: var(--t4); color: var(--fg-neutral-muted); }
.band li { display: flex; gap: 8px; }
.band li::before { content: ""; flex: none; width: 5px; height: 5px; margin-top: 8px; border-radius: 50%; background: var(--fg-brand); }
.band .row-btns { margin-top: auto; padding-top: 8px; }
.empty-store { padding: 40px; border-radius: var(--r4); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); text-align: center; display: grid; justify-items: center; gap: 8px; }
.empty-store h3 { font: var(--t7); font-weight: 700; }
.empty-store p { font: var(--t4); color: var(--fg-neutral-muted); max-width: 32em; word-break: keep-all; }

/* ---------- 둘러보기 ---------- */
.br { display: grid; grid-template-columns: 232px minmax(0, 1fr); gap: 40px; align-items: start; }
.br-side { position: sticky; top: 88px; display: grid; gap: 22px; }
.fgrp h4 { font: var(--t3); font-weight: 700; color: var(--fg-neutral-subtle); margin-bottom: 8px; }
.fgrp .opts { display: flex; flex-wrap: wrap; gap: 6px; }
.br-top { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.br-top .psearch { margin: 0; flex: 1 1 320px; min-height: 48px; box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak); border-radius: var(--r3); }
.br-top .psearch input { font: var(--t5); }
.br-sum { font: var(--t4); color: var(--fg-neutral-muted); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sel { min-height: 40px; padding: 0 12px; border-radius: var(--r2); box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak); background: var(--bg-layer-default); font: var(--t4); color: var(--fg-neutral); border: 0; }
.br-ftoggle { display: none; }
.sk-card .cover { background: var(--bg-neutral-weak); box-shadow: none; animation: skp 1.4s ease-in-out infinite; }
.sk-card i { display: block; height: 14px; border-radius: var(--r1); background: var(--bg-neutral-weak); animation: skp 1.4s ease-in-out infinite; }
@keyframes skp { 50% { opacity: .55; } }

/* ---------- 상세 ---------- */
.wd { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 48px; align-items: start; padding-block: 32px 96px; }
.wd-side { position: sticky; top: 88px; display: grid; gap: 12px; }
.wd-side .cover { border-radius: var(--r3); }
.wd-crumb { font: var(--t3); color: var(--fg-neutral-subtle); display: flex; gap: 6px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }
.wd-crumb a:hover { color: var(--fg-neutral); }
.wd h1 { font: var(--t12); font-weight: 800; letter-spacing: -.02em; word-break: keep-all; }
.wd .wsub { margin-top: 6px; font: var(--t6); color: var(--fg-neutral-muted); word-break: keep-all; }
.wd-pub { margin-top: 14px; display: inline-flex; align-items: center; gap: 8px; font: var(--t4); font-weight: 700; }
.wd-pub .av { width: 28px; height: 28px; border-radius: var(--full); display: grid; place-items: center; background: var(--bg-neutral-weak); font: var(--t2); font-weight: 800; color: var(--fg-neutral-muted); }
.facts2 { margin-top: 20px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
.facts2 > div { padding: 12px 14px; display: grid; gap: 2px; border-left: 1px solid var(--stroke-neutral-muted); }
.facts2 > div:first-child { border-left: 0; }
.facts2 span { font: var(--t2); color: var(--fg-neutral-subtle); }
.facts2 b { font: var(--t4); font-weight: 700; }
.wd-sec { margin-top: 36px; }
.wd-sec > h2 { font: var(--t7); font-weight: 700; margin-bottom: 12px; }
.wd-desc p { font: var(--t5); line-height: 27px; color: var(--fg-neutral); word-break: keep-all; }
.wd-desc p + p { margin-top: 12px; }
.feats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.feats li { display: flex; gap: 8px; padding: 12px 14px; border-radius: var(--r2_5); background: var(--bg-layer-fill); font: var(--t4); }
.feats li svg { width: 16px; height: 16px; color: var(--fg-positive); flex: none; margin-top: 1.5px; }
.toc { border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
.toc li { display: flex; gap: 12px; padding: 12px 16px; font: var(--t4); border-top: 1px solid var(--stroke-neutral-muted); }
.toc li:first-child { border-top: 0; }
.toc li .n { color: var(--fg-neutral-subtle); font-variant-numeric: tabular-nums; min-width: 22px; }
.toc li .pg { margin-left: auto; color: var(--fg-neutral-subtle); }
.pv-strip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(160px, 220px); gap: 12px; overflow-x: auto; padding-bottom: 8px; }
.pv-strip button { border-radius: var(--r2); overflow: hidden; box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); background: var(--paper); aspect-ratio: 1 / 1.414; }
.pv-strip img { width: 100%; height: 100%; object-fit: contain; display: block; }
.rights-box { display: grid; gap: 10px; padding: 16px; border-radius: var(--r3); background: var(--bg-layer-fill); font: var(--t4); }
.rights-box .r { display: flex; gap: 10px; align-items: flex-start; }
.rights-box .r svg { width: 18px; height: 18px; flex: none; margin-top: 1px; color: var(--fg-neutral-muted); }
.vlist li { display: grid; grid-template-columns: 72px minmax(0, 1fr) auto; gap: 12px; padding: 12px 0; border-top: 1px solid var(--stroke-neutral-muted); font: var(--t4); }
.vlist li:first-child { border-top: 0; }
.vlist .mu { font: var(--t3); }
.unit-list { display: flex; flex-wrap: wrap; gap: 8px; }
.wd-acts { display: grid; gap: 8px; }
.wd-note { font: var(--t3); color: var(--fg-neutral-subtle); line-height: 18px; }
.wd-mbar { display: none; }

/* 미리보기 보기 */
.lightbox { position: fixed; inset: 0; z-index: 90; background: var(--bg-overlay); display: grid; place-items: center; padding: 24px; }
.lightbox img { max-width: min(860px, 100%); max-height: calc(100dvh - 120px); background: var(--paper); border-radius: var(--r2); box-shadow: var(--shadow-dialog); }
.lightbox .lb-bar { position: absolute; top: 16px; right: 16px; display: flex; gap: 8px; }
.lightbox .lb-bar .btn { background: var(--bg-layer-floating); }
.lightbox .lb-nav { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; align-items: center; padding: 6px; border-radius: var(--full); background: var(--bg-layer-floating); box-shadow: var(--shadow-floating); font: var(--t4); }
.lightbox .lb-nav span { padding-inline: 8px; }

/* ---------- 구조화 교재 본문 ---------- */
.sc { max-width: 760px; }
.sc h2.sc-t { font: var(--t10); font-weight: 800; letter-spacing: -.01em; margin-bottom: 20px; }
.sc h3 { font: var(--t7); font-weight: 700; margin: 28px 0 10px; }
.sc p.tx { font: var(--t5); line-height: 28px; margin: 10px 0; word-break: keep-all; }
.sc .tip { margin: 12px 0; padding: 14px 16px; border-radius: var(--r2_5); background: var(--bg-warning-weak); color: var(--fg-neutral); font: var(--t4); line-height: 22px; }
.sc .ex, .sc .qq { margin: 16px 0; padding: 18px; border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
.sc .ex .lb, .sc .qq .lb { font: var(--t3); font-weight: 700; color: var(--fg-brand); margin-bottom: 6px; display: block; }
.sc .ex .sol, .sc .qq .sol { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--stroke-neutral-weak); font: var(--t4); line-height: 23px; color: var(--fg-neutral-muted); }
.sc .qq ol { margin-top: 10px; display: grid; gap: 6px; font: var(--t4); }
.sc .qq ol li { display: flex; gap: 8px; }
.sc .sum { margin: 16px 0; padding: 18px 20px; border-radius: var(--r3); background: var(--bg-layer-fill); display: grid; gap: 8px; font: var(--t4); }
.sc .sum li { display: flex; gap: 8px; } .sc .sum li::before { content: "✓"; color: var(--fg-positive); font-weight: 700; }
.sc .locked { margin-top: 24px; padding: 24px; border-radius: var(--r3); background: var(--bg-layer-fill); text-align: center; font: var(--t4); color: var(--fg-neutral-muted); }

/* ---------- 라이브러리 ---------- */
.lib-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(176px, 1fr)); gap: 28px 20px; }
.lib-card { display: flex; flex-direction: column; gap: 8px; }
.lib-card .cover { cursor: pointer; }
.lib-card .w-t { font: var(--t4); font-weight: 700; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.lib-card .w-p { font: var(--t3); color: var(--fg-neutral-subtle); }
.lib-card .prog { margin-top: 2px; }
.lib-card .row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.lib-card .badge-up { position: absolute; top: 8px; right: 8px; z-index: 2; }
.lib-tools .sel { width: auto; }
.lib-tools { display: flex; gap: 12px; align-items: center; margin-bottom: 20px; flex-wrap: wrap; }

/* ---------- 리더 ---------- */
body.in-read .gnb { display: none; }
.rd { min-height: 100dvh; display: grid; grid-template-rows: auto minmax(0, 1fr); background: var(--bg-layer-basement); }
.rd-bar { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 8px; height: 56px; padding: 0 12px; background: var(--bg-layer-default); box-shadow: inset 0 -1px 0 var(--stroke-neutral-muted); }
.rd-bar .t { font: var(--t4); font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.rd-bar .sp { flex: 1; }
.rd-bar .pg { display: inline-flex; align-items: center; gap: 6px; font: var(--t4); font-variant-numeric: tabular-nums; }
.rd-bar .pg input { width: 56px; min-height: 32px; text-align: center; border-radius: var(--r1_5); box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak); border: 0; background: var(--bg-layer-default); font: var(--t4); color: var(--fg-neutral); }
.rd-bar .ib { width: 36px; height: 36px; border-radius: var(--r2); display: grid; place-items: center; }
.rd-bar .ib:hover { background: var(--veil); }
.rd-bar .ib svg { width: 18px; height: 18px; }
.rd-body { overflow: auto; display: grid; justify-items: center; align-content: start; padding: 24px 12px 80px; gap: 16px; }
.rd-page { background: var(--paper); box-shadow: var(--shadow-floating); border-radius: 2px; max-width: 100%; }
.rd-page canvas { display: block; max-width: 100%; height: auto; }
.rd-prog { position: fixed; left: 0; right: 0; bottom: 0; height: 3px; z-index: 31; background: transparent; }
.rd-prog i { display: block; height: 100%; background: var(--fg-brand); transition: width var(--d4) var(--easing); }
.rd-sc { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; width: 100%; max-width: 1080px; padding: 32px 20px 96px; background: var(--bg-layer-default); border-radius: var(--r3); }
.rd-toc { position: sticky; top: 72px; align-self: start; display: grid; gap: 2px; }
.rd-toc button { text-align: left; padding: 8px 10px; border-radius: var(--r1_5); font: var(--t4); color: var(--fg-neutral-muted); }
.rd-toc button[aria-current="true"] { background: var(--bg-neutral-weak); color: var(--fg-neutral); font-weight: 700; }
.rd-msg { max-width: 520px; margin: 80px auto; text-align: center; display: grid; gap: 10px; justify-items: center; }
.rd-msg h2 { font: var(--t8); font-weight: 700; }
.rd-msg p { color: var(--fg-neutral-muted); font: var(--t4); }

/* ---------- AI 연습 상단 ---------- */
.prac { padding-block: 40px 8px; }
.prac h1 { font: var(--t12); font-weight: 800; letter-spacing: -.02em; }
.prac .lead { margin-top: 8px; font: var(--t5); color: var(--fg-neutral-muted); max-width: 40em; word-break: keep-all; }
.prac-grid { margin-top: 24px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.pcard { display: flex; flex-direction: column; gap: 6px; padding: 20px; border-radius: var(--r4); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); min-height: 132px; }
.pcard:hover { background: var(--bg-neutral-weak-alpha); }
.pcard b { font: var(--t6); font-weight: 700; }
.pcard span { font: var(--t3); color: var(--fg-neutral-muted); line-height: 18px; word-break: keep-all; }
.pcard .k { width: 36px; height: 36px; border-radius: var(--r2_5); background: var(--bg-brand-weak); color: var(--fg-brand-contrast); display: grid; place-items: center; margin-bottom: 6px; }
.pcard .k svg { width: 20px; height: 20px; }
.quick { margin-top: 24px; padding: 24px; border-radius: var(--r4); background: var(--bg-layer-fill); display: grid; gap: 16px; }
.quick h2 { font: var(--t8); font-weight: 700; }
.quick .qrow { display: grid; grid-template-columns: 1fr 1.4fr 1.4fr auto auto; gap: 10px; align-items: end; }
.quick .qrow .fld > label { font: var(--t3); font-weight: 700; color: var(--fg-neutral-muted); }
.quick .sel { width: 100%; min-height: 44px; }
.quick .from { font: var(--t4); display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ---------- 출판 스튜디오 ---------- */
.st-h { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.st-pub { display: flex; align-items: center; gap: 14px; padding: 18px 20px; border-radius: var(--r4); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
.st-pub .av { width: 48px; height: 48px; border-radius: var(--r3); display: grid; place-items: center; background: var(--bg-brand-weak); color: var(--fg-brand-contrast); font: var(--t7); font-weight: 800; }
.st-pub b { font: var(--t6); font-weight: 700; display: block; }
.st-pub .sp { flex: 1; }
.st-table { width: 100%; border-collapse: collapse; font: var(--t4); }
.st-table th { text-align: left; font: var(--t3); font-weight: 700; color: var(--fg-neutral-subtle); padding: 10px 12px; border-bottom: 1px solid var(--stroke-neutral-weak); }
.st-table td { padding: 14px 12px; border-bottom: 1px solid var(--stroke-neutral-muted); vertical-align: middle; }
.st-table tr.clk { cursor: pointer; }
.st-table tr.clk:hover td { background: var(--bg-neutral-weak-alpha); }
.st-table .t { font-weight: 700; }
.st-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin: 20px 0 28px; }
.st-step { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); font: var(--t4); font-weight: 700; color: var(--fg-neutral-muted); text-align: left; }
.st-step .n { width: 24px; height: 24px; border-radius: var(--full); display: grid; place-items: center; background: var(--bg-neutral-weak); font: var(--t2); font-weight: 800; flex: none; }
.st-step[aria-current="step"] { box-shadow: inset 0 0 0 2px var(--stroke-neutral-contrast); color: var(--fg-neutral); }
.st-step.done .n { background: var(--bg-positive-weak); color: var(--fg-positive); }
.st-form { display: grid; gap: 20px; max-width: 760px; }
.st-form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.st-form .three { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.st-form .sel { width: 100%; min-height: 52px; border-radius: var(--r3); padding: 0 14px; font: var(--t5); }
.units-pick { display: grid; gap: 10px; max-height: 320px; overflow: auto; padding: 12px; border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak); }
.units-pick .ug b { font: var(--t3); font-weight: 700; color: var(--fg-neutral-muted); display: block; margin-bottom: 6px; }
.units-pick .ug .opts { display: flex; flex-wrap: wrap; gap: 6px; }
.radio-cards { display: grid; gap: 8px; }
.radio-card { display: flex; gap: 12px; padding: 14px 16px; border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-weak); text-align: left; font: var(--t4); }
.radio-card[aria-checked="true"] { box-shadow: inset 0 0 0 2px var(--stroke-neutral-contrast); background: var(--bg-neutral-weak-alpha); }
.radio-card .dot2 { width: 18px; height: 18px; border-radius: 50%; box-shadow: inset 0 0 0 2px var(--stroke-neutral-weak); flex: none; margin-top: 1px; }
.radio-card[aria-checked="true"] .dot2 { box-shadow: inset 0 0 0 5px var(--fg-neutral); }
.radio-card b { display: block; font-weight: 700; }
.radio-card span.mu { font: var(--t3); line-height: 18px; }
.chk { display: flex; gap: 10px; align-items: flex-start; font: var(--t4); line-height: 21px; cursor: pointer; }
.chk input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--fg-neutral); flex: none; }
.drop { display: grid; justify-items: center; gap: 8px; padding: 28px; border-radius: var(--r3); border: 1.5px dashed var(--stroke-neutral-weak); text-align: center; font: var(--t4); color: var(--fg-neutral-muted); }
.drop.on { border-color: var(--fg-brand); background: var(--bg-brand-weak); }
.thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.thumbs img { width: 84px; aspect-ratio: 1 / 1.414; object-fit: cover; border-radius: var(--r1_5); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); background: var(--paper); }
.checklist { display: grid; gap: 8px; }
.checklist li { display: flex; gap: 10px; align-items: center; font: var(--t4); }
.checklist li .ok { width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; flex: none; background: var(--bg-neutral-weak); color: var(--fg-neutral-subtle); }
.checklist li.y .ok { background: var(--bg-positive-weak); color: var(--fg-positive); }
.checklist li .ok svg { width: 12px; height: 12px; }
.st-guide { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.st-guide > div { padding: 20px; border-radius: var(--r4); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); display: grid; gap: 6px; align-content: start; }
.st-guide b { font: var(--t5); font-weight: 700; }
.st-guide p { font: var(--t3); line-height: 19px; color: var(--fg-neutral-muted); word-break: keep-all; }
.st-guide .n { font: var(--t2); font-weight: 800; color: var(--fg-brand); }
.kv { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 6px 12px; font: var(--t4); }
.kv dt { color: var(--fg-neutral-subtle); }
.code-in textarea { font: 12px/18px ui-monospace, SFMono-Regular, Menlo, monospace !important; }

/* ---------- 반응형 ---------- */
@media (max-width: 1080px) {
  .ph-in { grid-template-columns: 1fr; gap: 28px; padding-block: 36px 32px; }
  .ph h1 { font: var(--t12); font-weight: 800; }
  .br { grid-template-columns: 1fr; }
  .br-side { position: static; display: none; padding: 16px; border-radius: var(--r3); box-shadow: inset 0 0 0 1px var(--stroke-neutral-muted); }
  .br-side.open { display: grid; }
  .br-ftoggle { display: inline-flex; }
  .wd { grid-template-columns: 220px minmax(0, 1fr); gap: 28px; }
  .prac-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quick .qrow { grid-template-columns: 1fr 1fr; }
  .st-guide { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .pp { padding-block: 20px 120px; }
  .ph h1 { font: var(--t10); font-weight: 800; }
  .ph .lead { font: var(--t5); }
  .psearch { min-height: 52px; } .psearch input { font: var(--t5); }
  .spot { grid-template-columns: 96px minmax(0, 1fr); padding: 14px; gap: 14px; }
  .statrow { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stat { padding: 10px 12px; } .stat b { font: var(--t7); font-weight: 800; }
  .subj-tiles, .band { grid-template-columns: 1fr; }
  .wgrid, .lib-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 14px; }
  .shelf-row { grid-auto-columns: 42%; gap: 14px; }
  .shelf-nav { display: none; }
  .wd { grid-template-columns: 1fr; gap: 20px; padding-top: 16px; }
  .wd-side { position: static; grid-template-columns: 120px minmax(0, 1fr); align-items: start; gap: 16px; }
  .wd-side .wd-acts { display: none; }
  .wd h1 { font: var(--t10); font-weight: 800; }
  .facts2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts2 > div:nth-child(3) { border-left: 0; }
  .facts2 > div:nth-child(n+3) { border-top: 1px solid var(--stroke-neutral-muted); }
  .feats { grid-template-columns: 1fr; }
  .wd-mbar { display: flex; gap: 8px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 35; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: var(--bg-layer-default); box-shadow: inset 0 1px 0 var(--stroke-neutral-muted); }
  .wd-mbar .btn { flex: 1; }
  .rd-sc { grid-template-columns: 1fr; padding: 20px 16px 80px; }
  .rd-toc { position: static; display: flex; overflow-x: auto; gap: 4px; }
  .rd-toc button { white-space: nowrap; }
  .rd-bar .t { max-width: 34vw; }
  .prac-grid { grid-template-columns: 1fr; }
  .quick .qrow { grid-template-columns: 1fr; }
  .st-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .st-form .two, .st-form .three { grid-template-columns: 1fr; }
  .st-table thead { display: none; }
  .st-table tr { display: grid; grid-template-columns: 1fr auto; padding: 12px 0; border-bottom: 1px solid var(--stroke-neutral-muted); }
  .st-table td { border: 0; padding: 2px 0; }
  .kv { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .wcard .cover, .rd-prog i { transition: none; }
  .wcard:hover .cover { transform: none; }
  .sk-card .cover, .sk-card i { animation: none; }
}