/* บทเรียนธรรมศึกษาชั้นตรี — หน้าอ่าน (ธีมหอไตร คราม-ทอง ชุดเดียวกับสนามฝึก /dhamma-quiz)
   · โทนสีของทั้งหน้าเปลี่ยนตามวิชาที่เปิดอยู่ ผ่านตัวแปร --a / --a-soft / --a-deep
   · มีโหมดกลางคืน: html.ds-night สลับเฉพาะค่าตัวแปร ไม่แตะโครง
   · ขนาดตัวอักษรเนื้อหาอิง --reading-scale (วิดเจ็ต ก-/ก+ ชุดกลางของเว็บ) */

[v-cloak] { display: none; }

:root {
	--ds-page: #f4f1e8;
	--ds-paper: #fffdf7;
	--ds-paper-2: #fffaef;
	--ds-rule: #e9e0ca;
	--ds-rule-soft: #f2ecdd;
	--ds-ink: #1b2140;
	--ds-body: #39415e;
	--ds-muted: #868ca8;
	--ds-indigo: #4338ca;
	--ds-gold: #b9821f;
	--ds-shell: #ffffff;
	--ds-shell-line: #e7e2d4;
	--ds-shadow: 0 14px 34px -18px rgba(23, 32, 51, .45);
	--ds-mark: #ffe9a8;
	--ds-mark-ink: #6b4c0e;
	/* โทนวิชา (ตั้งค่าจริงในคลาส .sj-* ด้านล่าง) */
	--a: #4338ca;
	--a-soft: #e9ecff;
	--a-deep: #2b2585;
	--a-on: #fff;
}

/* ---------- โทนสีประจำวิชา ---------- */
.sj-kratu  { --a: #b9821f; --a-soft: #fdf1d8; --a-deep: #7d5610; }
.sj-dhamma { --a: #4338ca; --a-soft: #e9ecff; --a-deep: #2b2585; }
.sj-buddha { --a: #0e7490; --a-soft: #e0f3f8; --a-deep: #0a4d61; }
.sj-vinaya { --a: #2e7d55; --a-soft: #e2f3e9; --a-deep: #1b5638; }

.ds-night {
	--ds-page: #070b22;
	--ds-paper: #101740;
	--ds-paper-2: #0d1436;
	--ds-rule: rgba(255, 255, 255, .13);
	--ds-rule-soft: rgba(255, 255, 255, .08);
	--ds-ink: #f6f1e1;
	--ds-body: #cdd5f2;
	--ds-muted: #8a93c0;
	--ds-indigo: #a5b0ff;
	--ds-gold: #f0c264;
	--ds-shell: #0c1231;
	--ds-shell-line: rgba(255, 255, 255, .12);
	--ds-shadow: 0 18px 44px -20px rgba(0, 0, 0, .8);
	--ds-mark: rgba(240, 194, 100, .32);
	--ds-mark-ink: #ffe6a3;
}
.ds-night .sj-kratu  { --a: #f0c264; --a-soft: rgba(240, 194, 100, .15); --a-deep: #ffe6a3; --a-on: #2b1e00; }
.ds-night .sj-dhamma { --a: #9aa5ff; --a-soft: rgba(154, 165, 255, .15); --a-deep: #d6dbff; --a-on: #10133a; }
.ds-night .sj-buddha { --a: #5ec8dd; --a-soft: rgba(94, 200, 221, .15); --a-deep: #c7f0f8; --a-on: #07303a; }
.ds-night .sj-vinaya { --a: #6ed3a0; --a-soft: rgba(110, 211, 160, .15); --a-deep: #c6f2dc; --a-on: #06301c; }

/* ---------- โครงหน้า ---------- */
body.ds-body {
	margin: 0;
	background: var(--ds-page);
	color: var(--ds-body);
	font-family: 'Sarabun', system-ui, sans-serif;
	transition: background-color .3s ease, color .3s ease;
}
.ds-app { position: relative; }
.ds-app button { font: inherit; cursor: pointer; }
.ds-app :where(button, a, input, summary):focus-visible { outline: 3px solid var(--a); outline-offset: 2px; border-radius: 8px; }
.ds-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
/* ล็อกการเลื่อนหน้าตอนเปิดลิ้นชัก/หน้าต่างค้นหา */
.ds-lock, .ds-lock body { overflow: hidden; }

/* เมนูบนของเว็บในโหมดกลางคืน — ทับคลาส tailwind ของ topnav.php เฉพาะหน้านี้ */
.ds-night [data-pt-topnav] { background: rgba(8, 12, 36, .92) !important; border-color: rgba(255, 255, 255, .1) !important; }
.ds-night [data-pt-topnav] .text-gray-900 { color: #f6f1e1 !important; }
.ds-night [data-pt-topnav] .text-gray-600, .ds-night [data-pt-topnav] .text-gray-700 { color: #c3cbef !important; }
.ds-night [data-pt-topnav] .text-gray-400, .ds-night [data-pt-topnav] .text-gray-500 { color: #7f88b5 !important; }
.ds-night [data-pt-topnav] .bg-indigo-50 { background: rgba(120, 130, 255, .18) !important; }
.ds-night [data-pt-topnav] .text-indigo-600, .ds-night [data-pt-topnav] .text-indigo-500 { color: #b9c2ff !important; }
.ds-night [data-pt-topnav] .bg-white { background: #101740 !important; }
.ds-night [data-pt-topnav] .ring-gray-100 { --tw-ring-color: rgba(255, 255, 255, .12) !important; }
.ds-night [data-pt-topnav] .bg-gray-50 { background: rgba(255, 255, 255, .07) !important; }
.ds-night [data-pt-topnav] .border-gray-100 { border-color: rgba(255, 255, 255, .1) !important; }

/* ---------- ฉากหัวเรื่อง ---------- */
.ds-hero { position: relative; isolation: isolate; overflow: hidden; background: linear-gradient(118deg, #0d1234 0%, #241f70 52%, #4a2f86 100%); color: #fff; }
.ds-hero-art { position: absolute; z-index: -1; inset: 0 0 0 34%; background: url('/assets/game/dhamma-quiz/scenes/study-nook.webp') center/cover no-repeat; -webkit-mask-image: linear-gradient(to left, #000 46%, transparent); mask-image: linear-gradient(to left, #000 46%, transparent); opacity: .95; }
.ds-hero::after { content: ""; position: absolute; z-index: -1; inset: 0; background: linear-gradient(0deg, rgba(9, 12, 40, .55), transparent 55%); }
.ds-hero-in { max-width: 1380px; margin: 0 auto; padding: 1.5rem clamp(1rem, 3vw, 2rem) 1.35rem; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.5rem; align-items: center; }
.ds-back { display: inline-flex; align-items: center; gap: .45rem; color: #c9cfff; font-size: .76rem; font-weight: 800; text-decoration: none; }
.ds-back:hover { color: #fff; }
.ds-hero h1 { margin: .5rem 0 0; font-size: clamp(1.6rem, 3.4vw, 2.5rem); font-weight: 800; line-height: 1.24; letter-spacing: -.02em; color: #fffaf0; text-shadow: 0 3px 26px rgba(0, 0, 0, .45); }
.ds-hero h1 em { font-style: normal; color: #ffd776; }
.ds-hero-sub { margin: .45rem 0 0; color: #ccd3f4; font-size: .9rem; line-height: 1.7; }
.ds-hero-sub b { color: #ffe6a3; font-weight: 800; }

.ds-tools { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1rem; }
.ds-tool { display: inline-flex; align-items: center; gap: .5rem; min-height: 42px; padding: .4rem .9rem; border: 1px solid rgba(255, 255, 255, .22); border-radius: 999px; background: rgba(255, 255, 255, .1); color: #f4f2ff; font-weight: 800; font-size: .84rem; -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); transition: background .18s ease, transform .18s ease; }
.ds-tool:hover { background: rgba(255, 255, 255, .2); transform: translateY(-1px); }
.ds-tool.is-on { background: linear-gradient(180deg, #ffd776, #dfa53c); border-color: #ffe6a3; color: #2b1e00; }
.ds-tool i { font-size: .82rem; }
.ds-tool kbd { padding: .05rem .35rem; border-radius: .35rem; background: rgba(0, 0, 0, .28); border: 1px solid rgba(255, 255, 255, .2); font: inherit; font-size: .7rem; }
.ds-tool-count { min-width: 20px; height: 20px; display: grid; place-items: center; padding: 0 .3rem; border-radius: 999px; background: #ffd776; color: #35240a; font-size: .68rem; font-weight: 800; }
.ds-tool.is-search { flex: 1 1 15rem; max-width: 22rem; justify-content: flex-start; color: #cfd5f7; font-weight: 700; }
.ds-tool.is-search kbd { margin-left: auto; }
.ds-tool-sm { display: none; }

/* วงแหวนความคืบหน้ารวม */
.ds-hero-ring { display: grid; grid-template-columns: auto minmax(0, 1fr); grid-template-areas: "ring text" "btn btn"; align-items: center; gap: .55rem .9rem; padding: .9rem 1.1rem; border-radius: 1.2rem; background: rgba(8, 11, 38, .55); border: 1px solid rgba(255, 255, 255, .16); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.ds-ring { flex: none; width: 74px; height: 74px; transform: rotate(-90deg); }
.ds-ring circle { fill: none; stroke-width: 6; stroke-linecap: round; }
.ds-ring .bg { stroke: rgba(255, 255, 255, .17); }
.ds-ring .fg { stroke: #ffd776; transition: stroke-dasharray .6s cubic-bezier(.22, .9, .3, 1); }
.ds-ring-wrap { grid-area: ring; position: relative; }
.ds-hero-ring-text { grid-area: text; }
.ds-ring-num { position: absolute; inset: 0; display: flex; align-items: baseline; justify-content: center; color: #fff8e6; font-weight: 800; font-size: 1.5rem; line-height: 1; }
.ds-ring-num small { font-size: .72rem; font-weight: 800; color: #d7c79c; }
.ds-hero-ring-text b { display: block; color: #fff8e6; font-size: .95rem; }
.ds-hero-ring-text span { display: block; margin-top: .1rem; color: #b3bce6; font-size: .74rem; }
.ds-resume { grid-area: btn; justify-self: start; display: inline-flex; align-items: center; gap: .4rem; margin-left: calc(74px + .9rem); padding: .35rem .8rem; border: 0; border-radius: 999px; background: linear-gradient(180deg, #ffd776, #dfa53c); color: #2b1e00; font-weight: 800; font-size: .78rem; }
.ds-resume:hover { filter: brightness(1.06); }

/* ---------- การ์ดวิชา (กะทัดรัด) ---------- */
.ds-subjects { max-width: 1380px; margin: 0 auto; padding: .85rem clamp(1rem, 3vw, 2rem) .1rem; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .6rem; }
.ds-subject { position: relative; overflow: hidden; display: flex; align-items: flex-start; gap: .6rem; padding: .6rem .7rem .65rem; border: 1.5px solid var(--ds-shell-line); border-radius: .9rem; background: var(--ds-shell); text-align: left; color: var(--ds-body); box-shadow: 0 6px 18px -14px rgba(23, 32, 51, .5); transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.ds-subject:hover { transform: translateY(-2px); border-color: var(--a); }
.ds-subject > i { flex: none; width: 32px; height: 32px; display: grid; place-items: center; border-radius: .65rem; background: var(--a-soft); color: var(--a); font-size: .9rem; transition: background .2s ease, color .2s ease; }
.ds-subject-body { min-width: 0; flex: 1; }
.ds-subject b { display: block; color: var(--ds-ink); font-size: .89rem; line-height: 1.3; }
.ds-subject small { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: .1rem; color: var(--ds-muted); font-size: .68rem; line-height: 1.45; }
.ds-subject-meter { margin-top: .4rem; height: 5px; border-radius: 999px; background: var(--ds-rule-soft); overflow: hidden; }
.ds-subject-meter i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--a), var(--a-deep)); transition: width .5s cubic-bezier(.22, .9, .3, 1); }
.ds-subject-count { display: flex; align-items: center; justify-content: space-between; gap: .4rem; margin-top: .25rem; color: var(--ds-muted); font-size: .65rem; font-weight: 800; }
.ds-subject-frac { display: none; }
.ds-subject.is-active { border-color: var(--a); background: linear-gradient(180deg, var(--a-soft), var(--ds-shell) 70%); }
.ds-subject.is-active > i { background: var(--a); color: var(--a-on); }
.ds-subject.is-done::after { content: "\f00c"; position: absolute; top: .45rem; right: .5rem; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: .62rem; width: 17px; height: 17px; display: grid; place-items: center; border-radius: 50%; background: var(--a); color: var(--a-on); }
.ds-subject-hot { display: inline-flex; align-items: center; gap: .22rem; margin-left: .3rem; padding: .05rem .4rem; border-radius: 999px; background: rgba(199, 63, 43, .14); color: #b4321f; font-size: .62rem; font-weight: 800; }
.ds-night .ds-subject-hot { color: #f07a63; }

/* ---------- แถบบท (ติดหัวเวลาเลื่อน) ---------- */
.ds-bar { position: sticky; top: 64px; z-index: 30; margin-top: .8rem; background: var(--ds-shell); background: color-mix(in srgb, var(--ds-shell) 92%, transparent); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-top: 1px solid var(--ds-shell-line); border-bottom: 1px solid var(--ds-shell-line); }
.ds-bar-in { max-width: 1380px; margin: 0 auto; padding: .5rem clamp(1rem, 3vw, 2rem); display: flex; align-items: center; gap: .6rem; }
.ds-bar-title { min-width: 0; flex: 1; }
.ds-bar-title b { display: block; color: var(--ds-ink); font-size: .92rem; font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ds-bar-title span { display: block; color: var(--ds-muted); font-size: .7rem; font-weight: 700; }
.ds-bar-btn { flex: none; min-width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: 0 .75rem; border: 1.5px solid var(--ds-rule); border-radius: .8rem; background: var(--ds-paper); color: var(--ds-body); font-weight: 800; font-size: .82rem; }
.ds-bar-btn:hover:not(:disabled) { border-color: var(--a); color: var(--a); }
.ds-bar-btn:disabled { opacity: .35; cursor: not-allowed; }
.ds-bar-btn.is-toc { display: none; }
.ds-bar-read { flex: none; min-height: 42px; display: inline-flex; align-items: center; gap: .45rem; padding: 0 1rem; border: 1.5px solid var(--a); border-radius: 999px; background: var(--ds-paper); color: var(--a); font-weight: 800; font-size: .84rem; }
.ds-bar-read.is-on { background: linear-gradient(180deg, var(--a), var(--a-deep)); border-color: var(--a-deep); color: var(--a-on); }
.ds-bar-line { height: 3px; background: var(--ds-rule-soft); }
.ds-bar-line i { display: block; height: 100%; background: linear-gradient(90deg, var(--a), var(--ds-gold)); transform-origin: left; transition: transform .1s linear; }

/* ---------- ระหว่างโหลด ---------- */
.ds-loading { padding: 5rem 1rem; text-align: center; color: var(--ds-muted); }
.ds-loading i { font-size: 2.2rem; color: var(--ds-gold); animation: dsPulse 1.6s ease-in-out infinite; }
.ds-loading p { margin: .8rem 0 0; font-weight: 800; }
@keyframes dsPulse { 50% { opacity: .35; } }

/* ---------- โครง ๓ คอลัมน์ ---------- */
.ds-layout { max-width: 1380px; margin: 0 auto; padding: 1.2rem clamp(1rem, 3vw, 2rem) 3rem; display: grid; grid-template-columns: 298px minmax(0, 1fr) 232px; gap: 1.6rem; align-items: start; }

/* ---------- สารบัญ ---------- */
.ds-side { position: sticky; top: 124px; max-height: calc(100vh - 148px); overflow-y: auto; padding: 1rem .9rem; border-radius: 1.2rem; background: var(--ds-shell); border: 1px solid var(--ds-shell-line); box-shadow: 0 6px 20px -14px rgba(23, 32, 51, .5); scrollbar-width: thin; }
.ds-side-head { display: flex; align-items: center; gap: .45rem; margin: 0 0 .5rem; padding: 0 .35rem; font-size: .76rem; font-weight: 800; color: var(--ds-muted); }
.ds-side-head i { color: var(--a); }
.ds-side-head b { color: var(--ds-ink); }
/* แถบความคืบหน้าของวิชานี้ — บาง ๆ ใต้หัวสารบัญ */
.ds-side-meter { display: flex; align-items: center; gap: .55rem; margin: .15rem .4rem .85rem; }
.ds-side-meter span { flex: 1; height: 5px; border-radius: 999px; background: var(--ds-rule-soft); overflow: hidden; }
.ds-side-meter span i { display: block; height: 100%; border-radius: 999px; background: var(--a); transition: width .5s cubic-bezier(.22, .9, .3, 1); }
.ds-side-meter b { flex: none; color: var(--ds-muted); font-size: .68rem; font-weight: 800; }
.ds-era { display: flex; align-items: center; gap: .5rem; margin: .9rem .35rem .35rem; font-size: .66rem; font-weight: 800; letter-spacing: .06em; color: var(--a); }
.ds-era::after { content: ""; flex: 1; height: 1px; background: var(--ds-rule-soft); }
.ds-chap { display: flex; align-items: flex-start; gap: .6rem; width: 100%; padding: .5rem .6rem; border: 0; border-radius: .8rem; background: none; text-align: left; font-size: .86rem; font-weight: 700; color: var(--ds-body); line-height: 1.5; transition: background .15s ease, color .15s ease; }
.ds-chap:hover { background: var(--ds-paper-2); }
.ds-chap-no { flex: none; width: 1.6rem; height: 1.6rem; display: grid; place-items: center; border-radius: .55rem; background: var(--ds-rule-soft); color: var(--ds-muted); font-size: .72rem; font-weight: 800; transition: background .2s ease, color .2s ease; }
.ds-chap-txt { flex: 1; min-width: 0; text-wrap: pretty; }
.ds-chap.is-read { color: var(--ds-muted); }
.ds-chap.is-read .ds-chap-no { background: var(--a-soft); color: var(--a); }
.ds-chap.is-active { background: var(--a-soft); color: var(--a-deep); font-weight: 800; }
.ds-chap.is-active .ds-chap-no { background: var(--a); color: var(--a-on); }
.ds-night .ds-chap.is-active { color: var(--ds-ink); }
.ds-side-close { display: none; margin-left: auto; width: 32px; height: 32px; border: 0; border-radius: .6rem; background: var(--ds-paper-2); color: var(--ds-muted); }
.ds-side-subjects { display: none; }
.ds-side-foot { display: none; }

/* ---------- เนื้อหา ---------- */
.ds-article { min-width: 0; }
.ds-art-head { margin: 0 0 1.1rem; padding-bottom: .9rem; border-bottom: 2px solid var(--ds-rule-soft); }
.ds-crumb { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem .6rem; margin: 0 0 .4rem; font-size: .74rem; font-weight: 800; color: var(--ds-muted); }
.ds-crumb b { display: inline-flex; align-items: center; gap: .3rem; padding: .12rem .55rem; border-radius: 999px; background: var(--a-soft); color: var(--a-deep); }
.ds-night .ds-crumb b { color: var(--a); }
.ds-art-head h2 { margin: 0; font-size: calc(1.7rem * var(--reading-scale, 1)); line-height: 1.35; font-weight: 800; color: var(--ds-ink); letter-spacing: -.01em; }
.ds-art-head h2 .ds-drop { display: inline-grid; place-items: center; width: 2.1rem; height: 2.1rem; margin-right: .5rem; border-radius: .7rem; background: linear-gradient(160deg, var(--a), var(--a-deep)); color: var(--a-on); font-size: 1rem; vertical-align: -.35rem; box-shadow: 0 8px 18px -8px var(--a); }

.ds-card { position: relative; margin-bottom: 1rem; padding: 1.35rem 1.6rem; border-radius: 1.2rem; background: var(--ds-paper); border: 1px solid var(--ds-rule); box-shadow: var(--ds-shadow); scroll-margin-top: 130px; }
.ds-card.is-flash { animation: dsFlash 1.6s ease; }
@keyframes dsFlash { 0%, 40% { box-shadow: 0 0 0 3px var(--a), var(--ds-shadow); } }
.ds-card-head { display: flex; align-items: flex-start; gap: .6rem; margin: 0 0 .85rem; padding-bottom: .6rem; border-bottom: 2px solid var(--ds-rule-soft); }
.ds-card-head h3 { flex: 1; margin: 0; font-size: calc(1.18rem * var(--reading-scale, 1)); font-weight: 800; color: var(--a-deep); line-height: 1.55; }
.ds-night .ds-card-head h3 { color: var(--a); }
.ds-card-head h3.is-plain { color: var(--ds-muted); font-size: calc(.9rem * var(--reading-scale, 1)); font-weight: 800; letter-spacing: .03em; align-self: center; }
.ds-sec-no { flex: none; width: 1.9rem; height: 1.9rem; display: grid; place-items: center; border-radius: .6rem; background: var(--a-soft); color: var(--a-deep); font-size: .8rem; font-weight: 800; }
.ds-night .ds-sec-no { color: var(--a); }
.ds-star { flex: none; width: 32px; height: 32px; display: grid; place-items: center; border: 0; border-radius: .6rem; background: none; color: var(--ds-muted); font-size: .85rem; opacity: .55; transition: opacity .15s ease, color .15s ease, transform .15s ease; }
.ds-card:hover .ds-star { opacity: 1; }
.ds-star:hover { color: var(--ds-gold); transform: scale(1.12); }
.ds-star.is-on { opacity: 1; color: var(--ds-gold); }

.ds-card p { margin: 0 0 .9rem; font-size: calc(1.03rem * var(--reading-scale, 1)); line-height: 2; color: var(--ds-body); text-align: justify; text-indent: 2.2em; }
.ds-card p:last-child { margin-bottom: 0; }
.ds-pali { color: var(--ds-indigo); font-weight: 800; }
.ds-hit { padding: .05em .15em; border-radius: .25em; background: var(--ds-mark); color: var(--ds-mark-ink); font-weight: 700; }

/* บัญชีข้อธรรม — คำละบรรทัด ศัพท์เน้น คำแปลแยกสี */
.ds-items { list-style: none; margin: .2rem 0 1.1rem; padding: 0; display: grid; gap: .4rem; }
.ds-items-head { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin: .3rem 0 .45rem; }
.ds-items-tag { display: inline-flex; align-items: center; gap: .35rem; font-size: .7rem; font-weight: 800; color: var(--ds-muted); }
.ds-items-btn { display: inline-flex; align-items: center; gap: .35rem; padding: .25rem .7rem; border: 1px solid var(--ds-rule); border-radius: 999px; background: var(--ds-paper-2); color: var(--a-deep); font-size: .72rem; font-weight: 800; }
.ds-night .ds-items-btn { color: var(--a); }
.ds-items-btn:hover { border-color: var(--a); }
.ds-items li { display: flex; align-items: baseline; gap: .7rem; padding: .55rem .85rem; border-radius: .8rem; background: var(--a-soft); border: 1px solid transparent; font-size: calc(1rem * var(--reading-scale, 1)); line-height: 1.75; color: var(--ds-body); transition: border-color .15s ease; }
.ds-items li:hover { border-color: var(--a); }
.ds-item-no { flex: none; width: 1.65rem; height: 1.65rem; display: grid; place-items: center; align-self: flex-start; border-radius: 50%; background: var(--a); color: var(--a-on); font-size: .74rem; font-weight: 800; transform: translateY(.2rem); }
.ds-term { color: var(--a-deep); font-weight: 800; }
.ds-night .ds-term { color: var(--ds-ink); }
.ds-gloss { color: var(--ds-body); }
/* โหมดทดสอบตัวเอง: ซ่อนคำแปล แตะเพื่อเปิด */
.ds-items li.is-hidden { cursor: pointer; }
.ds-items li.is-hidden .ds-gloss { filter: blur(6px); opacity: .55; -webkit-user-select: none; user-select: none; }
.ds-items li.is-hidden::after { content: "แตะเพื่อดูคำแปล"; margin-left: auto; padding-left: .5rem; color: var(--a); font-size: .68rem; font-weight: 800; white-space: nowrap; }

/* สุภาษิต/กระทู้ยกบท — แผ่นใบลานกลางหน้า */
.ds-saying { position: relative; margin: 1.2rem auto; padding: 1.15rem 1.3rem 1rem; max-width: 34rem; text-align: center; border: 1.5px solid var(--ds-gold); border-radius: 1rem; background: linear-gradient(180deg, var(--ds-paper), var(--ds-paper-2)); box-shadow: 0 10px 26px -16px rgba(185, 130, 31, .8); }
.ds-night .ds-saying { background: linear-gradient(180deg, rgba(240, 194, 100, .1), rgba(240, 194, 100, .04)); }
/* เครื่องหมายฟองมัน ๏ ของหนังสือไทย — ใช้ฟอนต์เดียวกับเนื้อหา ไม่ต้องพึ่งไอคอนภายนอก */
.ds-saying::before { content: "๏"; position: absolute; top: -.8rem; left: 50%; transform: translateX(-50%); width: 1.6rem; height: 1.6rem; display: grid; place-items: center; border-radius: 50%; background: linear-gradient(160deg, #ffd776, #dfa53c); color: #4a3000; font-size: .85rem; font-weight: 700; line-height: 1; box-shadow: 0 6px 14px -8px rgba(185, 130, 31, .9); }
/* มีป้ายกำกับ (กระทู้ตั้ง/กระทู้รับ) = ใช้ป้ายแทนฟองมัน ไม่ซ้อนกัน */
.ds-saying.has-tag::before { display: none; }
.ds-saying figcaption { position: absolute; top: -.72rem; left: 50%; transform: translateX(-50%); padding: .18rem .8rem; border-radius: 999px; background: linear-gradient(180deg, #dfa53c, #b9821f); color: #fff8dd; font-size: .69rem; font-weight: 800; letter-spacing: .02em; white-space: nowrap; box-shadow: 0 6px 14px -8px rgba(185, 130, 31, .9); }
.ds-card .ds-saying p { margin: 0; text-indent: 0; text-align: center; }
.ds-card .ds-saying-pali { margin-top: .35rem; font-size: calc(1.2rem * var(--reading-scale, 1)); font-weight: 800; color: var(--ds-indigo); line-height: 1.85; }
.ds-card .ds-saying-thai { margin-top: .2rem; font-size: calc(.98rem * var(--reading-scale, 1)); color: var(--ds-body); line-height: 1.7; }
.ds-card .ds-saying-src { margin-top: .35rem; font-size: .74rem; color: var(--ds-muted); font-weight: 700; }

/* ---------- ภาพหัวบท (ภาพประกอบที่วาดตามเนื้อหาบท) ---------- */
.ds-chapart { margin: 0 0 1.2rem; }
.ds-chapart a { position: relative; display: block; line-height: 0; border-radius: 1.1rem; overflow: hidden; box-shadow: var(--ds-shadow); }
.ds-chapart img { width: 100%; height: auto; display: block; aspect-ratio: 3 / 2; object-fit: cover; }
/* ขอบล่างไล่เข้าสีกระดาษ ให้ภาพต่อกับเนื้อหาอย่างนุ่มนวล ไม่เป็นก้อนแปลกปลอม */
.ds-chapart a::after { content: ""; position: absolute; inset: auto 0 0 0; height: 28%; background: linear-gradient(to top, var(--ds-page), transparent); pointer-events: none; }
.ds-night .ds-chapart img { filter: brightness(.86) saturate(.94); }

/* ภาพประกอบรายการ์ด — เล็กกว่าภาพหัวบท และอยู่ใต้หัวข้อของการ์ด */
.ds-cardart { margin: .2rem 0 1rem; }
.ds-cardart a { position: relative; display: block; line-height: 0; border-radius: .85rem; overflow: hidden; box-shadow: 0 10px 24px -18px rgba(23, 32, 51, .55); }
.ds-cardart img { width: 100%; height: auto; display: block; aspect-ratio: 3 / 2; object-fit: cover; }
.ds-night .ds-cardart img { filter: brightness(.86) saturate(.94); }

/* ---------- ของที่ผสมมาจากหนังสือเรียนฉบับส่วนกลาง ๒๕๖๔ ---------- */
/* ป้ายที่มา — บอกให้รู้ว่าตอนนี้อ่านจากเล่มจริงหน้าไหน (ไม่ใช่คำเรียบเรียงของเรา) */
.ds-card .ds-srcnote { display: flex; align-items: center; gap: .45rem; margin: 0 0 .9rem; padding: .4rem .75rem; border-left: 3px solid var(--a); border-radius: .35rem; background: var(--a-soft); color: var(--a-deep); font-size: .74rem; font-weight: 700; line-height: 1.6; text-indent: 0; text-align: left; }
.ds-night .ds-card .ds-srcnote { background: rgba(255, 255, 255, .05); color: var(--a); }
.ds-card .ds-srcnote i { flex: none; opacity: .8; }

/* คำเน้นในเล่ม (ตัวเอียง = ศัพท์สำคัญ) — ขีดเส้นใต้อ่อน ๆ ให้สะดุดตาโดยไม่รบกวนการอ่าน */
.ds-emkey { font-style: normal; font-weight: 700; color: var(--a-deep); background: linear-gradient(transparent 62%, var(--a-soft) 62%, var(--a-soft) 96%, transparent 96%); -webkit-box-decoration-break: clone; box-decoration-break: clone; padding: 0 .1em; }
.ds-night .ds-emkey { color: #fff; background: linear-gradient(transparent 62%, rgba(255, 255, 255, .14) 62%, rgba(255, 255, 255, .14) 96%, transparent 96%); }

/* ย่อหน้าที่ต้นฉบับจัดกลาง (หัวคำ/คำอาราธนา) */
.ds-card p.is-mid { text-indent: 0; text-align: center; }

/* ตารางในเล่ม */
.ds-tablewrap { margin: .3rem 0 1.1rem; overflow-x: auto; border: 1px solid var(--ds-rule); border-radius: .85rem; background: var(--ds-paper); -webkit-overflow-scrolling: touch; }
.ds-table { width: 100%; border-collapse: collapse; font-size: calc(.94rem * var(--reading-scale, 1)); line-height: 1.75; }
.ds-table th, .ds-table td { padding: .5rem .7rem; border-bottom: 1px solid var(--ds-rule-soft); border-right: 1px solid var(--ds-rule-soft); color: var(--ds-body); text-align: left; vertical-align: top; }
.ds-table th { background: var(--a-soft); color: var(--a-deep); font-weight: 800; white-space: nowrap; }
.ds-night .ds-table th { background: rgba(255, 255, 255, .06); color: var(--a); }
.ds-table tr:last-child td { border-bottom: 0; }
.ds-table th:last-child, .ds-table td:last-child { border-right: 0; }
.ds-table tbody tr:nth-child(even) td { background: var(--ds-paper-2); }
.ds-night .ds-table tbody tr:nth-child(even) td { background: rgba(255, 255, 255, .03); }
.ds-cell-key { color: var(--ds-indigo); font-weight: 800; }
.ds-night .ds-cell-key { color: #cbd3ff; }

/* ภาพประกอบ */
.ds-figure { margin: 1rem 0 1.2rem; text-align: center; }
.ds-figure a { position: relative; display: inline-block; max-width: 100%; line-height: 0; }
.ds-figure img { max-width: 100%; height: auto; border-radius: .8rem; border: 1px solid var(--ds-rule); box-shadow: var(--ds-shadow); }
.ds-figzoom { position: absolute; right: .5rem; bottom: .5rem; display: inline-flex; align-items: center; gap: .35rem; padding: .25rem .6rem; border-radius: 999px; background: rgba(12, 16, 40, .72); color: #fff; font-size: .68rem; font-weight: 800; line-height: 1.4; opacity: 0; transition: opacity .18s ease; -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.ds-figure a:hover .ds-figzoom, .ds-figure a:focus-visible .ds-figzoom { opacity: 1; }
@media (hover: none) { .ds-figzoom { opacity: .9; } }
.ds-figure.is-diagram img, .ds-figure.is-facsimile img { background: #fff; }
.ds-figure figcaption { margin-top: .5rem; color: var(--ds-muted); font-size: .78rem; line-height: 1.7; }
.ds-card .ds-figcap { margin: -.4rem 0 1rem; color: var(--ds-muted); font-size: .78rem; text-align: center; text-indent: 0; }

/* ---------- ไฮไลต์ "เคยออกสอบ" (ยิ่งเข้ม = ยิ่งออกบ่อย) ---------- */
.ds-card[data-heat="1"] { --h: #d9a441; --h-wash: rgba(217, 164, 65, .09); --h-mark: rgba(233, 185, 92, .38); }
.ds-card[data-heat="2"] { --h: #dd8b34; --h-wash: rgba(221, 139, 52, .10); --h-mark: rgba(233, 155, 70, .45); }
.ds-card[data-heat="3"] { --h: #d9682f; --h-wash: rgba(217, 104, 47, .11); --h-mark: rgba(226, 120, 60, .5); }
.ds-card[data-heat="4"] { --h: #c73f2b; --h-wash: rgba(199, 63, 43, .12); --h-mark: rgba(214, 80, 55, .55); }
.ds-card[data-heat] { border-color: var(--h); border-width: 1.5px; box-shadow: var(--ds-shadow); background: linear-gradient(155deg, var(--h-wash), transparent 70%), var(--ds-paper); }
.ds-card[data-heat] .ds-card-head h3 > span { background: linear-gradient(transparent 58%, var(--h-mark) 58%, var(--h-mark) 94%, transparent 94%); -webkit-box-decoration-break: clone; box-decoration-break: clone; padding: 0 .15em; }
.ds-card[data-heat] .ds-sec-no { background: var(--h); color: #fff; }
.ds-heat-badge { flex: none; display: inline-flex; align-items: center; gap: .35rem; padding: .2rem .6rem; border: 0; border-radius: 999px; background: var(--h, var(--ds-gold)); color: #fff; font-size: .7rem; font-weight: 800; white-space: nowrap; transition: transform .15s ease; }
.ds-heat-badge:hover { transform: translateY(-1px) scale(1.03); }
.ds-heat-badge i { font-size: .68rem; }

/* แถบอธิบายสีความร้อน */
.ds-heat-bar { max-width: 1380px; margin: .6rem auto 0; padding: .6rem clamp(1rem, 3vw, 2rem); display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .9rem; }
.ds-heat-legend { display: flex; align-items: center; gap: .3rem; font-size: .72rem; font-weight: 800; color: var(--ds-muted); }
.ds-heat-legend b { width: 1.6rem; height: .55rem; border-radius: 999px; }
.ds-heat-note { color: var(--ds-muted); font-size: .72rem; font-weight: 700; }
.ds-heat-note b { color: var(--ds-ink); }

/* จุดความร้อนในสารบัญ */
.ds-chap-heat { flex: none; align-self: flex-start; margin-top: .18rem; min-width: 1.4rem; padding: .1rem .4rem; border-radius: .45rem; font-size: .64rem; font-weight: 800; text-align: center; }
.ds-chap-heat[data-heat="1"] { background: rgba(217, 164, 65, .16); color: #a67615; }
.ds-chap-heat[data-heat="2"] { background: rgba(221, 139, 52, .18); color: #a75f13; }
.ds-chap-heat[data-heat="3"] { background: rgba(217, 104, 47, .18); color: #b04d17; }
.ds-chap-heat[data-heat="4"] { background: rgba(199, 63, 43, .18); color: #b4321f; }

.ds-night .ds-chap-heat[data-heat="1"] { color: #e8c274; }
.ds-night .ds-chap-heat[data-heat="2"] { color: #eda860; }
.ds-night .ds-chap-heat[data-heat="3"] { color: #f08f5c; }
.ds-night .ds-chap-heat[data-heat="4"] { color: #f07a63; }

/* หน้าต่างข้อสอบของหัวข้อ */
.ds-exam-head { padding: .9rem 1.2rem; border-bottom: 1px solid var(--ds-rule-soft); }
.ds-exam-head small { display: block; color: var(--ds-muted); font-size: .72rem; font-weight: 800; }
.ds-exam-head h3 { margin: .15rem 0 .4rem; color: var(--ds-ink); font-size: 1.1rem; font-weight: 800; line-height: 1.4; }
.ds-exam-head .ds-exam-chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.ds-exam-chip { display: inline-flex; align-items: center; gap: .3rem; padding: .15rem .6rem; border-radius: 999px; background: var(--ds-paper-2); border: 1px solid var(--ds-rule); color: var(--ds-body); font-size: .72rem; font-weight: 800; }
.ds-exam-chip.is-picked { background: var(--a); border-color: var(--a); color: var(--a-on); }
.ds-exam-chip.is-hot { background: var(--ds-gold); border-color: var(--ds-gold); color: #fff; }
.ds-exam-close { position: absolute; top: .8rem; right: .9rem; width: 32px; height: 32px; border: 0; border-radius: .6rem; background: var(--ds-paper-2); color: var(--ds-muted); }
.ds-exam-list { overflow-y: auto; padding: .8rem 1.2rem 1.2rem; }
.ds-exam-q { padding: .8rem 0; border-bottom: 1px dashed var(--ds-rule); }
.ds-exam-q:last-child { border-bottom: 0; }
.ds-exam-q-top { display: flex; align-items: center; gap: .45rem; margin-bottom: .3rem; }
.ds-exam-year { padding: .1rem .5rem; border-radius: 999px; background: var(--a-soft); color: var(--a-deep); font-size: .68rem; font-weight: 800; }
.ds-night .ds-exam-year { color: var(--a); }
.ds-exam-no { color: var(--ds-muted); font-size: .7rem; font-weight: 800; }
.ds-exam-q p { margin: 0 0 .45rem; color: var(--ds-ink); font-size: .95rem; font-weight: 700; line-height: 1.7; }
.ds-exam-choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .3rem; }
.ds-exam-c { display: flex; align-items: baseline; gap: .4rem; padding: .35rem .6rem; border-radius: .6rem; background: var(--ds-paper-2); color: var(--ds-body); font-size: .84rem; line-height: 1.55; }
.ds-exam-c b { color: var(--ds-muted); font-weight: 800; }
.ds-exam-c.is-ans { background: rgba(16, 185, 129, .14); color: #0f7a4d; font-weight: 700; box-shadow: inset 0 0 0 1px rgba(16, 185, 129, .45); }
.ds-night .ds-exam-c.is-ans { color: #6ee7b7; }
.ds-exam-c.is-ans b { color: #0f7a4d; }
.ds-night .ds-exam-c.is-ans b { color: #6ee7b7; }
.ds-exam-foot { padding: .7rem 1.2rem; border-top: 1px solid var(--ds-rule-soft); display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; }
.ds-exam-foot p { flex: 1; margin: 0; color: var(--ds-muted); font-size: .7rem; line-height: 1.6; }

/* ---------- ท้ายบท ---------- */
.ds-foot { margin-top: 1.4rem; padding: 1.2rem; border-radius: 1.2rem; background: linear-gradient(160deg, var(--a-soft), var(--ds-shell) 75%); border: 1px solid var(--ds-shell-line); }
.ds-foot-top { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.ds-read-btn { flex: 1; min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: .55rem; padding: .6rem 1.3rem; border: 1.5px solid var(--a); border-radius: 999px; background: var(--ds-paper); color: var(--a); font-weight: 800; font-size: .98rem; transition: transform .15s ease, box-shadow .15s ease; }
.ds-read-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 22px -12px var(--a); }
.ds-read-btn.is-on { background: linear-gradient(180deg, var(--a), var(--a-deep)); border-color: var(--a-deep); color: var(--a-on); }
.ds-quiz-btn { min-height: 52px; display: inline-flex; align-items: center; gap: .5rem; padding: .6rem 1.2rem; border-radius: 999px; background: linear-gradient(180deg, #ffd776, #dfa53c); color: #2b1e00; font-weight: 800; font-size: .9rem; text-decoration: none; border: 1px solid #e5b155; }
.ds-quiz-btn:hover { filter: brightness(1.05); }
.ds-foot-nav { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin-top: .9rem; }
.ds-next { display: flex; align-items: center; gap: .7rem; padding: .7rem .9rem; border: 1.5px solid var(--ds-rule); border-radius: 1rem; background: var(--ds-paper); text-align: left; color: var(--ds-body); }
.ds-next:hover:not(:disabled) { border-color: var(--a); transform: translateY(-2px); }
.ds-next:disabled { opacity: .35; cursor: not-allowed; }
.ds-next { transition: transform .15s ease, border-color .15s ease; }
.ds-next i { flex: none; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--a-soft); color: var(--a); font-size: .75rem; }
.ds-next-txt { min-width: 0; flex: 1; }
.ds-next small { display: block; color: var(--ds-muted); font-size: .68rem; font-weight: 800; }
.ds-next b { display: block; font-size: .86rem; line-height: 1.4; color: var(--ds-ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ds-next.is-prev { text-align: left; }
.ds-next.is-next { flex-direction: row-reverse; text-align: right; }

.ds-source { margin: 2rem auto 0; max-width: 44rem; text-align: center; color: var(--ds-muted); font-size: .74rem; line-height: 1.8; }

/* ---------- รางขวา: หัวข้อในบท ---------- */
.ds-rail { position: sticky; top: 124px; max-height: calc(100vh - 148px); overflow-y: auto; scrollbar-width: thin; }
.ds-rail-head { display: flex; align-items: center; gap: .4rem; margin: 0 0 .55rem; font-size: .72rem; font-weight: 800; color: var(--ds-muted); }
.ds-rail-head i { color: var(--a); }
.ds-outline { list-style: none; margin: 0 0 1rem; padding: 0; border-left: 2px solid var(--ds-rule-soft); }
.ds-outline button { display: block; width: 100%; padding: .3rem 0 .3rem .7rem; margin-left: -2px; border: 0; border-left: 2px solid transparent; background: none; text-align: left; color: var(--ds-muted); font-size: .78rem; font-weight: 700; line-height: 1.5; }
.ds-outline button:hover { color: var(--a); }
.ds-outline button.is-active { border-left-color: var(--a); color: var(--a-deep); font-weight: 800; }
.ds-night .ds-outline button.is-active { color: var(--a); }
.ds-rail-stat { padding: .75rem .85rem; border-radius: .9rem; background: var(--ds-shell); border: 1px solid var(--ds-shell-line); }
.ds-rail-stat p { margin: 0 0 .35rem; display: flex; align-items: center; gap: .45rem; color: var(--ds-muted); font-size: .74rem; font-weight: 700; }
.ds-rail-stat p:last-child { margin-bottom: 0; }
.ds-rail-stat i { width: 1rem; text-align: center; color: var(--a); }
.ds-rail-stat b { color: var(--ds-ink); }

/* ---------- ค้นหาทั้งเล่ม ---------- */
.ds-modal { position: fixed; inset: 0; z-index: 80; display: flex; align-items: flex-start; justify-content: center; padding: clamp(1rem, 8vh, 6rem) 1rem 1rem; background: rgba(7, 11, 34, .62); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); animation: dsFade .18s ease; }
@keyframes dsFade { from { opacity: 0; } }
.ds-search { width: min(46rem, 100%); max-height: 78vh; display: flex; flex-direction: column; border-radius: 1.3rem; background: var(--ds-shell); border: 1px solid var(--ds-shell-line); box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .7); overflow: hidden; animation: dsPop .22s cubic-bezier(.22, .9, .3, 1); }
@keyframes dsPop { from { opacity: 0; transform: translateY(-14px); } }
.ds-search-bar { display: flex; align-items: center; gap: .7rem; padding: .85rem 1.1rem; border-bottom: 1px solid var(--ds-rule-soft); }
.ds-search-bar i { color: var(--a); }
.ds-search-bar input:focus-visible { outline: 0; }
.ds-search-bar input { flex: 1; min-width: 0; border: 0; background: none; color: var(--ds-ink); font-size: 1.05rem; font-weight: 700; outline: none; }
.ds-search-bar input::placeholder { color: var(--ds-muted); font-weight: 500; }
.ds-search-close { padding: .25rem .6rem; border: 1px solid var(--ds-rule); border-radius: .5rem; background: none; color: var(--ds-muted); font-size: .7rem; font-weight: 800; }
.ds-search-list { overflow-y: auto; padding: .5rem; }
.ds-hitrow { display: block; width: 100%; padding: .65rem .8rem; border: 0; border-radius: .8rem; background: none; text-align: left; }
.ds-hitrow:hover, .ds-hitrow.is-cursor { background: var(--a-soft); }
.ds-hitrow-top { display: flex; align-items: center; gap: .4rem; margin-bottom: .2rem; font-size: .7rem; font-weight: 800; color: var(--a-deep); }
.ds-night .ds-hitrow-top { color: var(--a); }
.ds-hitrow-top span { color: var(--ds-muted); font-weight: 700; }
.ds-hitrow-txt { color: var(--ds-body); font-size: .86rem; line-height: 1.65; }
.ds-search-empty { padding: 2.5rem 1rem; text-align: center; color: var(--ds-muted); font-size: .88rem; }
.ds-search-empty i { display: block; margin-bottom: .5rem; font-size: 1.6rem; color: var(--ds-rule); }
.ds-search-foot { display: flex; flex-wrap: wrap; gap: .35rem .9rem; padding: .55rem 1.1rem; border-top: 1px solid var(--ds-rule-soft); color: var(--ds-muted); font-size: .7rem; font-weight: 700; }
.ds-search-foot kbd { padding: .05rem .35rem; border-radius: .3rem; border: 1px solid var(--ds-rule); background: var(--ds-paper-2); font: inherit; font-size: .68rem; }

/* ---------- ลิ้นชักที่คั่นหนังสือ ---------- */
.ds-drawer { position: fixed; inset: 0; z-index: 80; background: rgba(7, 11, 34, .55); animation: dsFade .18s ease; }
.ds-drawer-panel { position: absolute; top: 0; right: 0; bottom: 0; width: min(23rem, 92vw); display: flex; flex-direction: column; background: var(--ds-shell); border-left: 1px solid var(--ds-shell-line); box-shadow: -20px 0 60px -30px rgba(0, 0, 0, .8); animation: dsSlide .25s cubic-bezier(.22, .9, .3, 1); }
@keyframes dsSlide { from { transform: translateX(100%); } }
.ds-drawer-head { display: flex; align-items: center; gap: .5rem; padding: 1rem 1.1rem; border-bottom: 1px solid var(--ds-rule-soft); color: var(--ds-ink); font-weight: 800; }
.ds-drawer-head i { color: var(--ds-gold); }
.ds-drawer-head button { margin-left: auto; width: 32px; height: 32px; border: 0; border-radius: .5rem; background: var(--ds-paper-2); color: var(--ds-muted); }
.ds-drawer-body { flex: 1; overflow-y: auto; padding: .6rem; }
.ds-mark { display: flex; align-items: flex-start; gap: .5rem; padding: .6rem .7rem; border-radius: .8rem; }
.ds-mark:hover { background: var(--ds-paper-2); }
.ds-mark-go { flex: 1; min-width: 0; border: 0; background: none; text-align: left; }
.ds-mark-go small { display: block; color: var(--ds-muted); font-size: .68rem; font-weight: 800; }
.ds-mark-go b { display: block; margin-top: .1rem; color: var(--ds-ink); font-size: .85rem; font-weight: 800; line-height: 1.45; }
.ds-mark-del { flex: none; width: 30px; height: 30px; border: 0; border-radius: .5rem; background: none; color: var(--ds-muted); }
.ds-mark-del:hover { color: #e11d48; background: rgba(225, 29, 72, .1); }
.ds-drawer-empty { padding: 2.5rem 1.2rem; text-align: center; color: var(--ds-muted); font-size: .85rem; line-height: 1.8; }
.ds-drawer-empty i { display: block; margin-bottom: .6rem; font-size: 1.8rem; color: var(--ds-rule); }

/* ลิ้นชักสารบัญ (จอแคบ) */
.ds-drawer-panel.is-left { right: auto; left: 0; border-left: 0; border-right: 1px solid var(--ds-shell-line); animation: dsSlideL .25s cubic-bezier(.22, .9, .3, 1); }
@keyframes dsSlideL { from { transform: translateX(-100%); } }

.ds-key { display: flex; align-items: center; gap: .5rem; padding: .5rem .8rem; color: var(--ds-body); font-size: .88rem; font-weight: 700; }
.ds-key kbd { min-width: 1.9rem; padding: .15rem .45rem; border-radius: .4rem; border: 1px solid var(--ds-rule); background: var(--ds-paper-2); color: var(--ds-ink); font: inherit; font-size: .78rem; text-align: center; }
.ds-key span { margin-left: .35rem; color: var(--ds-muted); }
.ds-linkish { padding: 0; border: 0; background: none; color: var(--a); font: inherit; font-weight: 800; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- ฉากหลังทึบตอนเปิดลิ้นชักสารบัญ ---------- */
.ds-backdrop { position: fixed; inset: 0; z-index: 78; background: rgba(7, 11, 34, .55); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); animation: dsFade .18s ease; }

/* ---------- ป้ายแจ้งเตือน + ฉลอง ---------- */
.ds-toast { position: fixed; left: 50%; bottom: 5.5rem; z-index: 90; transform: translateX(-50%); display: flex; align-items: center; gap: .6rem; padding: .7rem 1.2rem; border-radius: 999px; background: linear-gradient(180deg, #1d2a6e, #10163c); color: #fff8e6; font-weight: 800; font-size: .88rem; box-shadow: 0 18px 40px -18px rgba(0, 0, 0, .8); animation: dsToast .3s cubic-bezier(.22, .9, .3, 1); }
.ds-toast i { color: #ffd776; }
@keyframes dsToast { from { opacity: 0; transform: translateX(-50%) translateY(14px); } }
.ds-cheer { position: fixed; inset: 0; z-index: 85; pointer-events: none; overflow: hidden; }
.ds-cheer i { position: absolute; bottom: -3rem; color: #ffd776; font-size: 1.4rem; animation: dsRise 2.2s ease-out forwards; }
@keyframes dsRise { to { transform: translateY(-105vh) rotate(22deg); opacity: 0; } }

/* ---------- แถบล่างจอแคบ ---------- */
.ds-mobilebar { display: none; }

/* ---------- จอกลาง: ซ่อนรางขวา ---------- */
@media (max-width: 1180px) {
	.ds-layout { grid-template-columns: 268px minmax(0, 1fr); }
	.ds-rail { display: none; }
	.ds-outline-inline { display: block; }
}
@media (min-width: 1181px) { .ds-outline-inline { display: none; } }

/* หัวข้อในบทแบบพับได้ (จอกลาง-แคบ) */
.ds-outline-inline { margin: 0 0 1rem; padding: .7rem .9rem; border-radius: 1rem; background: var(--ds-shell); border: 1px solid var(--ds-shell-line); }
.ds-outline-inline summary { display: flex; align-items: center; gap: .5rem; cursor: pointer; color: var(--ds-muted); font-size: .78rem; font-weight: 800; list-style: none; }
.ds-outline-inline summary::-webkit-details-marker { display: none; }
.ds-outline-inline summary i { color: var(--a); }
.ds-outline-inline .ds-outline { margin: .6rem 0 0; }

/* ---------- จอแคบ ---------- */
@media (max-width: 920px) {
	.ds-hero-in { grid-template-columns: minmax(0, 1fr); gap: .9rem; padding: 1.1rem clamp(1rem, 3vw, 2rem) 1rem; }
	.ds-hero-art { inset: 0 0 0 22%; opacity: .42; }
	.ds-hero h1 { margin-top: .35rem; }
	.ds-hero-sub { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: .35rem; font-size: .84rem; line-height: 1.6; }
	/* แถวเครื่องมือจอแคบ: ใช้ป้ายชื่อสั้น ปุ่มจึงลงได้แถวละ ๒ ปุ่ม ไม่กินที่ */
	.ds-tools { gap: .4rem; margin-top: .75rem; }
	.ds-tool { min-height: 38px; padding: .3rem .7rem; font-size: .79rem; }
	.ds-tool.is-search { flex: 1 1 100%; max-width: none; }
	.ds-tool-lg { display: none; }
	.ds-tool-sm { display: inline; }
	/* กล่องความคืบหน้า: แถวเดียว วงแหวน + ข้อความ + ปุ่มอ่านต่อ */
	.ds-hero-ring { justify-self: stretch; grid-template-columns: auto minmax(0, 1fr) auto; grid-template-areas: "ring text btn"; gap: .65rem; padding: .5rem .6rem; border-radius: 1rem; }
	.ds-ring { width: 44px; height: 44px; }
	.ds-ring circle { stroke-width: 7; }
	.ds-ring-num { font-size: .92rem; }
	.ds-ring-num small { font-size: .6rem; }
	.ds-hero-ring-text b { font-size: .84rem; }
	.ds-hero-ring-text span { font-size: .68rem; }
	.ds-resume { margin: 0; padding: .45rem .8rem; font-size: .76rem; }
	/* คำอธิบายสีความร้อน: เหลือแค่แถบสี ๔ ระดับ + คำอธิบายสั้น */
	.ds-heat-bar { gap: .35rem .6rem; padding: .55rem clamp(1rem, 3vw, 2rem); }
	.ds-heat-legend { font-size: .68rem; }
	.ds-heat-note { flex: 1 0 100%; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: .68rem; }
	.ds-subjects { display: flex; gap: .45rem; overflow-x: auto; padding: .7rem clamp(1rem, 3vw, 2rem) .55rem; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
	.ds-subjects::-webkit-scrollbar { display: none; }
	.ds-subject { flex: 0 0 auto; align-items: center; gap: .5rem; min-height: 44px; padding: .35rem .75rem .35rem .45rem; border-radius: 999px; box-shadow: none; scroll-snap-align: start; }
	.ds-subject:hover { transform: none; }
	.ds-subject > i { width: 28px; height: 28px; border-radius: 50%; font-size: .78rem; }
	.ds-subject-body { display: flex; align-items: center; }
	.ds-subject b { font-size: .85rem; white-space: nowrap; }
	.ds-subject small, .ds-subject-meter, .ds-subject-count { display: none; }
	.ds-subject-frac { display: block; color: var(--ds-muted); font-size: .7rem; font-weight: 800; white-space: nowrap; }
	.ds-subject.is-active .ds-subject-frac { color: var(--a-deep); }
	.ds-night .ds-subject.is-active .ds-subject-frac { color: var(--a); }
	.ds-subject.is-done::after { display: none; }
	.ds-layout { grid-template-columns: minmax(0, 1fr); padding-bottom: 6rem; }

	/* ── สารบัญกลายเป็นลิ้นชักเลื่อนออกจากขอบซ้าย (offcanvas) ── */
	.ds-side { position: fixed; z-index: 79; inset: 0 auto 0 0; width: min(21rem, 88vw); max-height: none; display: block; padding: 0; border-radius: 0; border: 0; border-right: 1px solid var(--ds-shell-line); box-shadow: 22px 0 60px -30px rgba(0, 0, 0, .7); transform: translateX(-100%); visibility: hidden; overflow-y: auto; overscroll-behavior: contain; transition: transform .28s cubic-bezier(.22, .9, .3, 1), visibility .28s; }
	.ds-side.is-open { transform: none; visibility: visible; }
	.ds-side-head { position: sticky; top: 0; z-index: 2; margin: 0; padding: 1rem .9rem .75rem; background: var(--ds-shell); border-bottom: 1px solid var(--ds-rule-soft); font-size: .82rem; }
	.ds-side-close { display: grid; place-items: center; }
	.ds-side-meter { margin: .7rem .95rem .8rem; }
	.ds-side-subjects { display: grid; gap: .35rem; padding: .75rem .8rem; border-bottom: 1px solid var(--ds-rule-soft); background: var(--ds-paper-2); }
	.ds-side-pill { display: flex; align-items: center; gap: .5rem; min-height: 42px; padding: .35rem .7rem; border: 1.5px solid var(--ds-rule); border-radius: .8rem; background: var(--ds-paper); color: var(--ds-body); font-weight: 800; font-size: .84rem; text-align: left; }
	.ds-side-pill i { width: 1.3rem; color: var(--a); font-size: .85rem; text-align: center; }
	.ds-side-pill em { margin-left: auto; font-style: normal; font-size: .7rem; font-weight: 800; color: var(--ds-muted); }
	.ds-side-pill.is-active { border-color: var(--a); background: var(--a-soft); color: var(--a-deep); }
	.ds-night .ds-side-pill.is-active { color: var(--ds-ink); }
	.ds-side-pill.is-active i, .ds-side-pill.is-active em { color: var(--a); }
	.ds-side .ds-era, .ds-side .ds-chap { margin-left: .45rem; margin-right: .45rem; }
	.ds-side .ds-chap { padding: .6rem .55rem; font-size: .9rem; }
	.ds-side-foot { display: flex; align-items: center; gap: .45rem; margin: .5rem 0 0; padding: .8rem .9rem calc(1rem + env(safe-area-inset-bottom)); border-top: 1px solid var(--ds-rule-soft); color: var(--ds-muted); font-size: .76rem; font-weight: 700; }
	.ds-side-foot i { color: var(--a); }
	.ds-side-foot b { color: var(--ds-ink); }

	.ds-bar-btn.is-toc { display: inline-flex; }
	.ds-bar .ds-bar-btn.is-step, .ds-bar .ds-bar-read { display: none; }
	.ds-card { padding: 1.1rem 1.15rem; border-radius: 1rem; }
	.ds-card p { text-align: left; }
	.ds-foot-nav { grid-template-columns: 1fr; }
	.ds-mobilebar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: grid; grid-template-columns: 48px 48px 1fr 48px; gap: .5rem; padding: .5rem .7rem calc(.5rem + env(safe-area-inset-bottom)); background: var(--ds-shell); background: color-mix(in srgb, var(--ds-shell) 94%, transparent); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-top: 1px solid var(--ds-shell-line); }
	.ds-mobilebar button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: .45rem; border: 1.5px solid var(--ds-rule); border-radius: .8rem; background: var(--ds-paper); color: var(--ds-body); font-weight: 800; font-size: .85rem; }
	.ds-mobilebar button:disabled { opacity: .35; }
	.ds-mobilebar .ds-mb-toc { border-color: var(--a); color: var(--a); background: var(--a-soft); }
	.ds-mobilebar .ds-mb-read { border-color: var(--a); color: var(--a); }
	.ds-mobilebar .ds-mb-read.is-on { background: linear-gradient(180deg, var(--a), var(--a-deep)); color: var(--a-on); }
	.ds-toast { bottom: 5rem; }
}

@media (max-width: 560px) {
	.ds-hero h1 { font-size: 1.55rem; }
	.ds-heat-legend b { width: 1.3rem; }
	.ds-tool.is-search { flex-basis: 100%; max-width: none; }
	.ds-card { padding: 1rem .95rem; }
	.ds-art-head h2 { font-size: calc(1.4rem * var(--reading-scale, 1)); }
	.ds-items li { flex-wrap: wrap; }
	.ds-items li.is-hidden::after { margin-left: 0; }
	.ds-exam-choices { grid-template-columns: minmax(0, 1fr); }
	.ds-card-head { flex-wrap: wrap; }
	.ds-heat-badge { order: 3; }
}

@media (prefers-reduced-motion: reduce) {
	.ds-app *, .ds-app *::before, .ds-app *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}