/* ===== Lịch sử Phật giáo Nam tông — kiểu dáng chung (trang chủ + các bài học); gốc từ trang Học Luật Tỳ-khưu ===== */
:root{
  --bg:#f6f0e4; --paper:#fffdf8; --card:#ffffff; --ink:#2a2018; --muted:#75685b; --line:#e6dac5;
  --acc:#8b2b22; --saff:#b8641c; --gold:#c9961f; --ok:#2e7d4f; --no:#b3362b; --info:#2c5d8a;
  --c1:#d9822b; --c2:#c2416b; --c3:#6b4fbf; --c4:#2f8a5b; --c5:#2a72b5; --c6:#a8801f; --c7:#b3362b; --c8:#1f8a8a;
  --shadow:0 6px 22px rgba(120,80,20,.10); --r:16px;
  --serif:"Noto Serif",Georgia,"Times New Roman",serif; --sans:"Noto Sans","Segoe UI",system-ui,sans-serif;
}
:root[data-theme="dark"]{--bg:#16120e; --paper:#1d1813; --card:#241d17; --ink:#efe6d9; --muted:#a99b8a; --line:#3b3128; --acc:#e8917b; --saff:#e5a55a; --gold:#e9c25a; --ok:#62c48f; --no:#f07a6e; --info:#86b7e3; --shadow:0 6px 22px rgba(0,0,0,.35)}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){--bg:#16120e; --paper:#1d1813; --card:#241d17; --ink:#efe6d9; --muted:#a99b8a; --line:#3b3128; --acc:#e8917b; --saff:#e5a55a; --gold:#e9c25a; --ok:#62c48f; --no:#f07a6e; --info:#86b7e3; --shadow:0 6px 22px rgba(0,0,0,.35)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17.5px;line-height:1.65;-webkit-text-size-adjust:100%}
a{color:var(--acc)}
img{max-width:100%}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.25;color:var(--ink)}
.pali{font-style:italic;color:var(--acc);font-weight:600}
.muted{color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* Nút đổi nền sáng/tối */
#themeBtn{position:fixed;top:10px;right:14px;z-index:40;width:40px;height:40px;border-radius:50%;border:1.5px solid var(--acc);background:var(--card);color:var(--acc);font-size:1.2rem;cursor:pointer;box-shadow:var(--shadow)}

/* Ảnh đầu trang: dùng chung duc-phat.css; chừa chỗ cho nút ◐ */
.buddhaWrap.lichsu{max-width:1180px;padding:12px 16px 0}
@media(min-width:1001px){.buddhaWrap.lichsu .buddhaTop .btTop{right:62px}}
@media(max-width:1000px){.buddhaWrap.lichsu .buddhaTop .btTop{padding-right:56px}}
.siteSwitch{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:6px;font-size:14px}
.siteSwitch .ssLink{display:inline-flex;align-items:center;gap:6px;padding:5px 12px 5px 5px;border:1px solid #e6d3ab;border-radius:999px;background:#fffaf0;color:#3a2c1e;text-decoration:none;font-weight:700;line-height:1.2}
.siteSwitch a.ssLink:hover{border-color:#8b2b22;color:#8b2b22}
.siteSwitch .ssLink i{font-style:normal;display:inline-grid;place-items:center;min-width:26px;height:26px;padding:0 5px;border-radius:999px;background:#f3e6c8;color:#8b2b22;font-weight:900;font-size:12px}
.siteSwitch .ssLink.on{background:#8b2b22;border-color:#8b2b22;color:#fff8ea}
.siteSwitch .ssHome i{width:26px;flex:none;padding:0;overflow:hidden;background:#fff;border:1px solid #e6d3ab}
.buddhaTop .btTop .ssHome i{width:22px}
.siteSwitch .ssHome i img{width:100%;height:100%;object-fit:cover;display:block}
.siteSwitch .ssLink.on i{background:rgba(255,255,255,.22);color:#fff8ea}
.btMotto{display:block;margin-top:6px;font-family:var(--serif);font-size:clamp(9px,1vw,12.5px);color:#8a6a35;font-style:italic}

/* Thanh điều hướng bài học */
.crumbs{max-width:1180px;margin:12px auto 0;padding:0 16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs a,.crumbs span{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;border:1.5px solid var(--line);background:var(--card);color:var(--ink);text-decoration:none;font-weight:600;font-size:.88rem}
.crumbs a:hover{border-color:var(--acc);color:var(--acc)}
.crumbs .on{background:var(--acc);border-color:var(--acc);color:var(--paper)}
.crumbs .soon{opacity:.55}

/* Thanh tiến độ đọc */
#readBar{position:fixed;left:0;top:0;height:4px;width:0;background:linear-gradient(90deg,var(--saff),var(--gold));z-index:50;transition:width .1s linear}

/* ===== Đầu bài học ===== */
.lhero{max-width:1180px;margin:18px auto 0;padding:0 16px}
.lhero-in{position:relative;border-radius:22px;overflow:hidden;background:linear-gradient(135deg,color-mix(in srgb,var(--saff) 16%,var(--card)),var(--card) 55%,color-mix(in srgb,var(--gold) 12%,var(--card)));border:1px solid var(--line);box-shadow:var(--shadow);padding:28px 30px 24px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:26px;align-items:center}
.lhero .kick{display:inline-block;font-weight:800;letter-spacing:.14em;font-size:.78rem;color:var(--paper);background:var(--acc);padding:4px 12px;border-radius:999px}
.lhero h1{font-size:clamp(1.7rem,3.4vw,2.6rem);margin:12px 0 8px;color:var(--acc)}
.lhero .sub{font-size:1.05rem;color:var(--muted);margin:0 0 14px}
.lhero .meta{display:flex;flex-wrap:wrap;gap:8px}
.lhero .meta span{font-size:.82rem;font-weight:700;padding:4px 10px;border-radius:999px;background:color-mix(in srgb,var(--gold) 16%,var(--card));border:1px solid color-mix(in srgb,var(--gold) 40%,var(--card))}
.goals{margin:0;padding:16px 18px;border-radius:16px;background:var(--paper);border:1px dashed color-mix(in srgb,var(--saff) 55%,var(--line))}
.goals b{display:block;font-family:var(--serif);color:var(--saff);margin-bottom:6px}
.goals ul{margin:0;padding-left:20px}
.goals li{margin:3px 0}
.lhero .pic{grid-column:1/-1;margin:0}
@media(max-width:820px){.lhero-in{grid-template-columns:1fr;padding:22px 18px}}

/* ===== Bố cục: mục lục + nội dung ===== */
.lwrap{max-width:1180px;margin:22px auto 0;padding:0 16px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:34px}
.toc{position:sticky;top:16px;align-self:start;max-height:calc(100vh - 32px);overflow:auto;padding:14px 10px 14px 14px;border-radius:var(--r);background:var(--card);border:1px solid var(--line)}
.toc b{display:block;font-family:var(--serif);font-size:.95rem;margin:0 0 6px 4px;color:var(--acc)}
.toc a{display:flex;gap:8px;align-items:baseline;padding:5px 8px;border-radius:9px;color:var(--ink);text-decoration:none;font-size:.86rem;line-height:1.35}
.toc a i{font-style:normal;flex:none;width:22px;height:22px;display:inline-grid;place-items:center;border-radius:50%;font-size:.72rem;font-weight:800;background:color-mix(in srgb,var(--c,var(--acc)) 14%,var(--card));color:var(--c,var(--acc))}
.toc a:hover{background:color-mix(in srgb,var(--acc) 7%,var(--card))}
.toc a.on{background:color-mix(in srgb,var(--acc) 12%,var(--card));font-weight:700}
.toc a.done i{background:var(--ok);color:#fff}
.toc a.done i::before{content:"✓"}.toc a.done i span{display:none}
main.lesson{min-width:0}
@media(max-width:900px){
  .lwrap{grid-template-columns:1fr;gap:12px}
  .toc{position:sticky;top:0;z-index:30;max-height:none;display:flex;gap:4px;overflow-x:auto;padding:8px 60px 8px 8px;border-radius:0 0 14px 14px;scrollbar-width:none;margin:0 -16px;border-left:0;border-right:0;border-top:0}
  .toc::-webkit-scrollbar{display:none}
  .toc b{display:none}
  .toc a{flex:none;white-space:nowrap;padding:5px 10px 5px 6px;border:1px solid var(--line);border-radius:999px}
}

/* ===== Phần (section) ===== */
.sec{padding:30px 0 34px;border-bottom:1px solid var(--line)}
.sec:last-of-type{border-bottom:0}
.sec-h{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.sec-n{flex:none;width:54px;height:54px;border-radius:16px;display:grid;place-items:center;font-size:1.6rem;background:color-mix(in srgb,var(--c,var(--acc)) 14%,var(--card));border:2px solid color-mix(in srgb,var(--c,var(--acc)) 45%,var(--card))}
.sec-h small{display:block;font-weight:800;letter-spacing:.14em;font-size:.72rem;color:var(--c,var(--acc))}
.sec-h h2{margin:2px 0 0;font-size:clamp(1.35rem,2.6vw,1.8rem)}
.lead{font-size:1.08rem;color:var(--ink);margin:0 0 16px}
.sec h3{font-size:1.18rem;margin:26px 0 10px}
.sec h3::before{content:"";display:inline-block;vertical-align:-.15em;width:6px;height:1.1em;margin-right:9px;border-radius:3px;background:var(--c,var(--acc))}
.sec p{margin:0 0 12px}

/* Thẻ cơ bản */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;box-shadow:var(--shadow)}
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:12px 0}
.trio{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:12px 0}
@media(max-width:720px){.duo,.trio{grid-template-columns:1fr}}
.tcard{border-radius:var(--r);padding:16px 18px;background:color-mix(in srgb,var(--c,var(--acc)) 8%,var(--card));border:1.5px solid color-mix(in srgb,var(--c,var(--acc)) 35%,var(--card))}
.tcard .tt{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.tcard .tt .ic{font-size:1.7rem;line-height:1}
.tcard .tt b{font-family:var(--serif);font-size:1.15rem;color:var(--c,var(--acc))}
.tcard .tt .pali{display:block;font-size:.85rem;color:var(--muted);font-weight:600}
.tcard p:last-child,.tcard ul:last-child{margin-bottom:0}
.tcard ul{margin:6px 0 0;padding-left:20px}

/* Ô ghi nhớ / mẹo */
.callout{display:flex;gap:12px;padding:14px 16px;border-radius:14px;margin:14px 0;background:color-mix(in srgb,var(--k,var(--gold)) 11%,var(--card));border-left:5px solid var(--k,var(--gold))}
.callout .ci{font-size:1.4rem;line-height:1.2}
.callout p{margin:0}
.callout.tip{--k:var(--ok)}.callout.warn{--k:var(--no)}.callout.info{--k:var(--info)}

/* Trích kinh (bấm để mở) */
details.kinh{margin:12px 0;border-radius:14px;border:1px solid color-mix(in srgb,var(--gold) 45%,var(--line));background:linear-gradient(180deg,color-mix(in srgb,var(--gold) 9%,var(--card)),var(--card));overflow:hidden}
details.kinh>summary{list-style:none;cursor:pointer;padding:12px 16px;display:flex;gap:10px;align-items:flex-start}
details.kinh>summary::-webkit-details-marker{display:none}
details.kinh>summary .ki{font-size:1.25rem;line-height:1.3}
details.kinh>summary .kt{flex:1;min-width:0}
details.kinh>summary b{display:block;font-family:var(--serif);color:var(--saff)}
details.kinh>summary em{display:block;color:var(--muted);font-size:.92rem;font-family:var(--serif)}
details.kinh>summary .kx{flex:none;font-size:.78rem;font-weight:800;color:var(--saff);border:1px solid currentColor;border-radius:999px;padding:2px 10px;margin-top:2px}
details.kinh>summary .kx::after{content:"Đọc"}
details.kinh[open]>summary .kx::after{content:"Thu gọn"}
details.kinh[open]>summary em{display:none}
details.kinh .kb{padding:2px 20px 16px 20px;font-family:var(--serif);font-size:1rem;line-height:1.75;border-top:1px dashed color-mix(in srgb,var(--gold) 40%,var(--line))}
details.kinh .kb p{margin:10px 0}
details.kinh .kb .src{font-family:var(--sans);font-size:.82rem;color:var(--muted);font-weight:700;text-align:right;margin-top:8px}
/* tô nhấn nhẹ màu vàng kim — dùng chung mọi nơi (không để màu vàng chói mặc định của trình duyệt) */
mark{background:color-mix(in srgb,var(--gold) 30%,transparent);color:inherit;border-radius:3px;padding:0 2px}
.kinh.giang{border-color:color-mix(in srgb,var(--c3) 40%,var(--line));background:linear-gradient(180deg,color-mix(in srgb,var(--c3) 8%,var(--card)),var(--card))}
.kinh.giang>summary b,.kinh.giang>summary .kx{color:var(--c3)}
.tag-gv{display:inline-block;font-family:var(--sans);font-size:.68rem;font-weight:800;letter-spacing:.05em;color:#fff;background:var(--c3);padding:1px 8px;border-radius:999px;vertical-align:2px;margin-left:6px}

/* Câu trích nổi bật */
.bigq{margin:18px 0;padding:22px 24px;border-radius:18px;text-align:center;font-family:var(--serif);font-size:clamp(1.1rem,2.2vw,1.35rem);line-height:1.6;background:radial-gradient(ellipse at top,color-mix(in srgb,var(--gold) 20%,var(--card)),var(--card) 70%);border:1px solid color-mix(in srgb,var(--gold) 45%,var(--line))}
.bigq .pl{display:block;font-size:.9rem;color:var(--acc);font-style:italic;margin-bottom:8px}
.bigq cite{display:block;font-family:var(--sans);font-style:normal;font-size:.82rem;font-weight:700;color:var(--muted);margin-top:10px}

/* Hình minh họa (chỉ hiện khi có ảnh) */
figure.pic{margin:16px 0;display:none}
figure.pic.ok{display:block}
figure.pic img{display:block;width:100%;height:auto;border-radius:18px;box-shadow:var(--shadow)}
figure.pic figcaption{font-size:.85rem;color:var(--muted);text-align:center;margin-top:6px;font-style:italic}

/* Chip */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;background:color-mix(in srgb,var(--c,var(--acc)) 10%,var(--card));border:1px solid color-mix(in srgb,var(--c,var(--acc)) 35%,var(--card));font-size:.9rem;font-weight:600}

/* Dòng thời gian */
.tl{position:relative;margin:14px 0;padding-left:34px}
.tl::before{content:"";position:absolute;left:13px;top:6px;bottom:6px;width:3px;border-radius:2px;background:linear-gradient(var(--c1),var(--c2),var(--c7))}
.tl-i{position:relative;margin:0 0 14px}
.tl-i::before{content:attr(data-n);position:absolute;left:-34px;top:2px;width:29px;height:29px;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:800;color:#fff;background:var(--c,var(--acc));box-shadow:0 0 0 4px var(--bg)}
.tl-i b{font-family:var(--serif);color:var(--c,var(--acc))}
.tl-i p{margin:2px 0 0}

/* Luồng các bước (ngang) */
.flow{display:flex;flex-wrap:wrap;align-items:stretch;gap:6px;margin:12px 0}
.flow .st{flex:1 1 120px;min-width:110px;padding:10px 12px;border-radius:12px;background:color-mix(in srgb,var(--c,var(--acc)) 9%,var(--card));border:1.5px solid color-mix(in srgb,var(--c,var(--acc)) 35%,var(--card));font-size:.88rem;line-height:1.4}
.flow .st b{display:block;font-size:.95rem;color:var(--c,var(--acc))}
.flow .ar{align-self:center;color:var(--muted);font-weight:800}
@media(max-width:600px){.flow{flex-direction:column}.flow .ar{transform:rotate(90deg);text-align:center}}

/* ===== Sơ đồ tóm tắt (mind-map) — trải hết bề ngang, trên phần mục lục ===== */
.mmwrap{max-width:1180px;margin:10px auto 0;padding:0 16px}
.mmsec{border-bottom:0;padding-bottom:10px}
.mm{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-areas:"n1 n2 n3" "n8 c n4" "n7 n6 n5";gap:30px 26px;padding:10px 4px 6px}
.mm-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:visible}
.mm-node{position:relative;z-index:1;display:block;text-decoration:none;color:var(--ink);border-radius:18px;padding:12px 14px 12px;background:color-mix(in srgb,var(--c) 9%,var(--card));border:2px solid color-mix(in srgb,var(--c) 50%,var(--card));box-shadow:var(--shadow);transition:transform .18s,box-shadow .18s}
.mm-node:hover{transform:translateY(-3px);box-shadow:0 10px 26px color-mix(in srgb,var(--c) 28%,transparent)}
.mm-h{display:flex;align-items:center;gap:8px;margin:-2px 0 6px}
.mm-h .ic{font-size:1.6rem;line-height:1}
.mm-h b{font-family:var(--serif);font-size:1.02rem;line-height:1.25;color:var(--c);background:color-mix(in srgb,var(--c) 13%,var(--card));border:1.5px solid color-mix(in srgb,var(--c) 45%,var(--card));padding:4px 12px;border-radius:999px}
.mm-node ul{margin:0;padding-left:18px;font-size:.84rem;line-height:1.45}
.mm-node li{margin:2px 0}
.mm-node li::marker{color:var(--c)}
.mm-c{grid-area:c;position:relative;z-index:1;align-self:center;justify-self:center;width:100%;max-width:300px;aspect-ratio:1/1;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:18px;background:radial-gradient(circle at 50% 35%,#fffaf0,#f8e7c4 70%,#efd39a);border:3px solid #c9961f;box-shadow:0 0 0 8px color-mix(in srgb,var(--gold) 18%,transparent),var(--shadow);color:#3a2310}
.mm-c svg{width:44%;height:auto;margin-bottom:4px}
.mm-c b{font-family:var(--serif);font-size:clamp(1rem,1.9vw,1.35rem);line-height:1.15;color:#8b2b22;letter-spacing:.02em}
.mm-c span{font-family:var(--serif);font-size:.82rem;font-style:italic;color:#6b4a1f;margin-top:4px}
.mm .n1{grid-area:n1;--c:var(--c1)}.mm .n2{grid-area:n2;--c:var(--c2)}.mm .n3{grid-area:n3;--c:var(--c3)}.mm .n4{grid-area:n4;--c:var(--c4)}
.mm .n5{grid-area:n5;--c:var(--c5)}.mm .n6{grid-area:n6;--c:var(--c6)}.mm .n7{grid-area:n7;--c:var(--c7)}.mm .n8{grid-area:n8;--c:var(--c8)}
.mm .n1,.mm .n2,.mm .n3{align-self:end}.mm .n4,.mm .n8{align-self:center}.mm .n5,.mm .n6,.mm .n7{align-self:start}
@media(max-width:860px){.mm{grid-template-columns:1fr;grid-template-areas:"c" "n1" "n2" "n3" "n4" "n5" "n6" "n7" "n8";gap:12px}.mm-lines{display:none}.mm-c{max-width:240px}}
.mm-tools{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:12px}
.btn{font:inherit;font-size:.9rem;font-weight:700;padding:8px 16px;border-radius:999px;border:1.5px solid var(--acc);background:var(--card);color:var(--acc);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.btn:hover{background:color-mix(in srgb,var(--acc) 8%,var(--card))}
.btn.pri{background:var(--acc);color:var(--paper)}
.btn:disabled{opacity:.45;cursor:default}

/* ===== Trắc nghiệm ===== */
.quiz{border-radius:20px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);padding:20px 22px;margin-top:10px}
.qz-top{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:.85rem;color:var(--muted);font-weight:700}
.qz-bar{flex:1;height:8px;border-radius:99px;background:color-mix(in srgb,var(--acc) 10%,var(--card));overflow:hidden}
.qz-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--saff),var(--gold));transition:width .3s}
.qz-q{font-family:var(--serif);font-size:1.2rem;margin:4px 0 14px;line-height:1.45}
.qz-opts{display:grid;gap:8px}
.qz-opts button{font:inherit;text-align:left;padding:11px 14px;border-radius:12px;border:1.5px solid var(--line);background:var(--paper);color:var(--ink);cursor:pointer;display:flex;gap:10px;align-items:flex-start;transition:border-color .15s,background .15s}
.qz-opts button:hover:not(:disabled){border-color:var(--acc)}
.qz-opts button .lt{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:.8rem;background:color-mix(in srgb,var(--acc) 10%,var(--card));color:var(--acc)}
.qz-opts button.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--card))}
.qz-opts button.right .lt{background:var(--ok);color:#fff}
.qz-opts button.wrong{border-color:var(--no);background:color-mix(in srgb,var(--no) 10%,var(--card))}
.qz-opts button.wrong .lt{background:var(--no);color:#fff}
.qz-opts button:disabled{cursor:default}
.qz-ex{margin-top:12px;padding:12px 14px;border-radius:12px;background:color-mix(in srgb,var(--info) 9%,var(--card));border-left:4px solid var(--info);font-size:.95rem}
.qz-nav{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}
.qz-end{text-align:center;padding:10px 0}
.qz-end .sc{font-family:var(--serif);font-size:3rem;font-weight:800;color:var(--acc);line-height:1.1}
.qz-end p{margin:6px 0 14px}

/* ===== Thẻ thuật ngữ lật ===== */
.flips{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px;margin:12px 0}
.flip{perspective:900px;height:118px;cursor:pointer;border:0;padding:0;background:none;font:inherit;color:inherit}
.flip .fi{position:relative;display:block;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}
.flip.on .fi{transform:rotateY(180deg)}
.flip .ff,.flip .fb{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:10px;border-radius:14px;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.flip .ff{background:linear-gradient(135deg,color-mix(in srgb,var(--saff) 18%,var(--card)),var(--card));border:1.5px solid color-mix(in srgb,var(--saff) 40%,var(--card))}
.flip .ff b{font-family:var(--serif);font-style:italic;font-size:1.15rem;color:var(--acc)}
.flip .ff small{color:var(--muted);font-size:.72rem;margin-top:6px}
.flip .fb{transform:rotateY(180deg);background:var(--card);border:1.5px solid var(--gold);font-size:.92rem;line-height:1.4}
.flip .fb b{display:block;color:var(--saff);font-size:1rem}

/* Danh mục tài liệu */
.refs{font-size:.9rem;color:var(--muted)}
.refs li{margin:4px 0}
.credit{margin-top:14px;padding:14px 16px;border-radius:14px;background:var(--card);border:1px dashed var(--line);font-size:.88rem;color:var(--muted)}

/* Chân trang */
footer.ft{max-width:1180px;margin:30px auto 0;padding:24px 16px 40px;text-align:center;color:var(--muted);font-size:.85rem;border-top:1px solid var(--line)}
footer.ft img{height:46px;width:auto;filter:url(#logoPaper);display:block;margin:0 auto 6px}
.ft-nav{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:26px 0 0}

/* Hiện dần khi cuộn tới */
.rv{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}.flip .fi{transition:none}}
@media print{.toc,#themeBtn,#readBar,.crumbs,.mm-tools{display:none}.lwrap{display:block}details.kinh .kb{display:block}.rv{opacity:1;transform:none}}

/* ===== Thành phần bổ sung: tầng văn bản, trích Pāḷi, bảng, tự kiểm tra ===== */
/* Nhãn tầng văn bản: Chánh tạng · Chú giải · Phụ chú giải · Kinh liên hệ · Abhidhamma · Ứng dụng */
.lay{display:inline-flex;align-items:center;gap:4px;font-family:var(--sans);font-size:.7rem;font-weight:800;letter-spacing:.04em;line-height:1.5;padding:1px 9px;border-radius:999px;vertical-align:2px;color:#fff;background:var(--k,var(--acc));white-space:normal;max-width:100%;font-style:normal}
.lay.ct{--k:#8b2b22}.lay.cg{--k:#2c5d8a}.lay.pcg{--k:#6b4fbf}.lay.ss{--k:#a8801f}.lay.ab{--k:#1f8a8a}.lay.ud{--k:#2e7d4f}
.legend{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;margin:10px 0 0;padding:10px 14px;border-radius:14px;background:var(--paper);border:1px dashed var(--line);font-size:.85rem;color:var(--muted)}
.legend b{color:var(--ink);font-family:var(--serif)}
/* Đoạn mang nhãn tầng: viền trái theo màu tầng */
.lyr{margin:14px 0;padding:12px 16px;border-radius:14px;background:color-mix(in srgb,var(--k) 6%,var(--card));border:1px solid color-mix(in srgb,var(--k) 25%,var(--line));border-left:5px solid var(--k)}
.lyr>.lay:first-child{margin-bottom:6px}
.lyr p:last-child,.lyr ul:last-child,.lyr ol:last-child{margin-bottom:0}
.lyr ul,.lyr ol{margin:6px 0 10px;padding-left:22px}
.lyr.ct{--k:#8b2b22}.lyr.cg{--k:#2c5d8a}.lyr.pcg{--k:#6b4fbf}.lyr.ss{--k:#a8801f}.lyr.ab{--k:#1f8a8a}.lyr.ud{--k:#2e7d4f}
/* Trích Pāḷi kèm nghĩa Việt */
.pv{margin:14px 0;padding:14px 18px;border-radius:14px;background:linear-gradient(180deg,color-mix(in srgb,var(--gold) 10%,var(--card)),var(--card));border:1px solid color-mix(in srgb,var(--gold) 40%,var(--line));border-left:5px solid var(--gold);font-family:var(--serif)}
.pv .pl{display:block;font-style:italic;color:var(--acc);font-weight:600;font-size:1.04rem;line-height:1.6}
.pv .vi{display:block;margin-top:6px;line-height:1.65}
.pv cite{display:block;font-family:var(--sans);font-style:normal;font-size:.78rem;font-weight:700;color:var(--muted);margin-top:6px;text-align:right}
/* Bảng */
.tw{overflow-x:auto;margin:12px 0;border-radius:14px;-webkit-overflow-scrolling:touch}
table.tbl{width:100%;border-collapse:separate;border-spacing:0;font-size:.92rem;line-height:1.5;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
table.tbl th{text-align:left;padding:9px 12px;font-family:var(--serif);font-size:.92rem;background:color-mix(in srgb,var(--c,var(--acc)) 12%,var(--card));color:var(--ink);border-bottom:1px solid var(--line)}
table.tbl td{padding:9px 12px;vertical-align:top;border-top:1px solid var(--line)}
table.tbl tr:first-child td{border-top:0}
table.tbl td:first-child{font-weight:600}
table.tbl tbody tr:nth-child(even) td{background:color-mix(in srgb,var(--c,var(--acc)) 3%,var(--card))}
@media(max-width:600px){table.tbl{font-size:.85rem}table.tbl th,table.tbl td{padding:8px 9px}}
/* Bảng từ vựng Pāḷi */
table.vt td:first-child{font-family:var(--serif);font-style:italic;color:var(--acc);white-space:nowrap}
/* Danh sách nên / không nên */
ul.dont,ul.do{list-style:none;margin:10px 0;padding:0}
ul.dont li,ul.do li{position:relative;padding:8px 12px 8px 40px;margin:6px 0;border-radius:12px;background:var(--card);border:1px solid var(--line)}
ul.dont li::before,ul.do li::before{position:absolute;left:12px;top:9px;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:.72rem;font-weight:900;color:#fff}
ul.dont li::before{content:"✕";background:var(--no)}
ul.do li::before{content:"✓";background:var(--ok)}
/* Tự kiểm tra: câu hỏi + gợi ý (bấm để mở) */
.tks{display:grid;gap:8px;margin:12px 0}
details.tk{border-radius:14px;border:1px solid var(--line);background:var(--card);overflow:hidden}
details.tk>summary{list-style:none;cursor:pointer;padding:11px 14px;display:flex;gap:10px;align-items:flex-start;font-weight:600}
details.tk>summary::-webkit-details-marker{display:none}
details.tk>summary .qn{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:.78rem;font-weight:800;background:color-mix(in srgb,var(--saff) 16%,var(--card));color:var(--saff)}
details.tk>summary .qt{flex:1;min-width:0}
details.tk>summary .kx{flex:none;font-size:.74rem;font-weight:800;color:var(--saff);border:1px solid currentColor;border-radius:999px;padding:2px 10px;margin-top:2px}
details.tk>summary .kx::after{content:"Gợi ý"}
details.tk[open]>summary .kx::after{content:"Thu gọn"}
details.tk .ans{padding:4px 16px 14px 50px;border-top:1px dashed var(--line);font-size:.95rem}
details.tk .ans p{margin:8px 0}
@media(max-width:600px){details.tk .ans{padding-left:16px}}
/* Chuỗi tiến trình (dọc) */
.chain{display:flex;flex-direction:column;align-items:stretch;margin:12px 0;max-width:680px}
.chain .ck{padding:9px 14px;border-radius:12px;background:color-mix(in srgb,var(--c,var(--acc)) 9%,var(--card));border:1.5px solid color-mix(in srgb,var(--c,var(--acc)) 35%,var(--card));font-size:.93rem}
.chain .ck b{color:var(--c,var(--acc))}
.chain .ca{align-self:center;color:var(--muted);font-weight:800;line-height:1.5}
/* Các ngày học trong tuần */
.days{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 0}
.days span{font-size:.75rem;font-weight:700;padding:3px 9px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--muted)}
.days span.on{background:color-mix(in srgb,var(--ok) 14%,var(--card));border-color:color-mix(in srgb,var(--ok) 40%,var(--card));color:var(--ok)}
/* Dòng dịch sát (gloss) dưới câu dịch HT. Minh Châu */
.pv .gl,.bigq .gl{display:block;margin-top:6px;font-family:var(--sans);font-style:normal;font-size:.82rem;line-height:1.5;color:var(--muted)}
.bigq .gl{text-align:center}

/* ===== Dòng ghi công + hộp “Giới thiệu” (cùng mẫu các trang Pāḷi, Vi Diệu Pháp) ===== */
footer.ft .siteCredit{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px 14px;max-width:680px;margin:12px auto 0;padding-top:10px;border-top:1px dashed var(--line)}
footer.ft .siteCredit b{color:var(--ink)}
.aboutLink{background:none;border:0;padding:0;color:var(--acc);font:inherit;font-weight:800;text-decoration:underline;cursor:pointer}
.aboutDlg{border:1px solid var(--line);border-radius:22px;padding:0;max-width:460px;width:calc(100% - 32px);background:var(--card);color:var(--ink);box-shadow:0 20px 60px rgba(40,28,20,.25)}
.aboutDlg::backdrop{background:rgba(40,28,20,.5)}
.aboutIn{position:relative;padding:24px 22px 20px;font-size:.95rem;line-height:1.55}
.aboutX{position:absolute;top:12px;right:12px;background:none;border:1px solid var(--line);border-radius:10px;width:32px;height:32px;cursor:pointer;color:var(--muted);font-size:14px}
.aboutEyebrow{color:var(--acc);font-weight:900;letter-spacing:.12em;font-size:.76rem}
.aboutName{margin:6px 40px 2px 0;font-size:1.3rem;line-height:1.3;color:var(--ink);font-family:var(--serif)}
.aboutRole{color:var(--muted);font-size:.88rem}
.aboutDlg p.aboutTxt{margin:12px 0;line-height:1.6}
.aboutRow{font-size:.9rem;color:var(--muted);margin:6px 0;overflow-wrap:anywhere}
.aboutRow a{color:var(--acc);font-weight:700}
.aboutVerse{margin-top:14px;background:color-mix(in srgb,var(--gold) 12%,var(--card));border-radius:14px;padding:14px 12px;text-align:center;line-height:1.5;font-size:.92rem}
.aboutVerse p{margin:0 0 10px}.aboutVerse p:last-child{margin:0}
.aboutVerse .pali{display:block;color:var(--acc);font-weight:900;font-style:normal;letter-spacing:.03em}
@media print{.aboutDlg,footer.ft .siteCredit .aboutLink{display:none}}

/* ===== Ôn tập nhiều dạng câu (LichsuOnTap) ===== */
.ot-sum{margin:0 0 12px;color:var(--ink)}
.ot-lbl{font-size:.74rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:10px 0 6px}
.ot-chips,.ot-modes{display:flex;flex-wrap:wrap;gap:8px}
.ot-chip{font:inherit;font-size:.86rem;font-weight:700;padding:6px 12px;border-radius:999px;border:1.5px solid var(--line);background:var(--paper);color:var(--ink);cursor:pointer}
.ot-chip b{display:inline-block;min-width:1.6em;padding:0 6px;margin-left:2px;border-radius:999px;background:color-mix(in srgb,var(--acc) 12%,var(--card));color:var(--acc);font-size:.78rem}
.ot-chip.on{border-color:var(--acc);background:color-mix(in srgb,var(--acc) 10%,var(--card));color:var(--acc)}
.ot-type{display:inline-block;font-size:.74rem;font-weight:800;letter-spacing:.06em;color:var(--saff);border:1px solid color-mix(in srgb,var(--saff) 50%,var(--card));border-radius:999px;padding:2px 10px;margin-bottom:6px}
.ot-hint{margin:-6px 0 10px;font-size:.88rem;color:var(--muted)}
.qz-opts.ot-tf{grid-template-columns:1fr 1fr}
.qz-opts button.ot-ck.sel{border-color:var(--acc);background:color-mix(in srgb,var(--acc) 8%,var(--card))}
.ot-fill input{width:100%;box-sizing:border-box;font:inherit;padding:11px 14px;border-radius:12px;border:1.5px solid var(--line);background:var(--paper);color:var(--ink)}
.ot-fill input:focus{outline:none;border-color:var(--acc)}
.ot-fill input.right,.ot-match select.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,var(--card))}
.ot-fill input.wrong,.ot-match select.wrong{border-color:var(--no);background:color-mix(in srgb,var(--no) 8%,var(--card))}
.ot-match{display:grid;gap:8px}
.ot-mrow{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:6px 10px;align-items:center;padding:8px 10px;border-radius:12px;border:1px solid var(--line);background:var(--paper)}
.ot-ml{font-weight:700}
.ot-match select{font:inherit;font-size:.92rem;width:100%;padding:8px 10px;border-radius:10px;border:1.5px solid var(--line);background:var(--card);color:var(--ink)}
.ot-mk{grid-column:2;font-size:.85rem;color:var(--ok);font-weight:700}
.ot-mk:empty{display:none}
@media(max-width:560px){.ot-mrow{grid-template-columns:1fr}.ot-mk{grid-column:1}}
.ot-order{list-style:none;counter-reset:o;margin:0;padding:0;display:grid;gap:6px}
.ot-order li{counter-increment:o;display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:12px;border:1.5px solid var(--line);background:var(--paper)}
.ot-order li::before{content:counter(o);flex:none;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:.78rem;font-weight:800;background:color-mix(in srgb,var(--acc) 10%,var(--card));color:var(--acc)}
.ot-order li.right{border-color:var(--ok)}.ot-order li.wrong{border-color:var(--no)}
.ot-ot{flex:1;min-width:0}
.ot-ob{flex:none;display:flex;gap:4px}
.ot-ob button{font:inherit;width:34px;height:30px;border-radius:8px;border:1.5px solid var(--line);background:var(--card);color:var(--acc);cursor:pointer}
.ot-ob button:disabled{opacity:.35;cursor:default}
.ot-right{margin-top:10px;font-size:.9rem;color:var(--ok);font-weight:700}
.otq{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin-top:10px}
.ot-oprog{margin:0;font-size:.9rem;color:var(--muted)}
.ot-oq{padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);min-width:0;overflow-wrap:anywhere}
.ot-oh{display:flex;gap:10px;align-items:flex-start}
.ot-oh .qn{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:800;background:color-mix(in srgb,var(--saff) 16%,var(--card));color:var(--saff)}
.ot-tag{display:inline-block;font-size:.72rem;font-weight:800;border-radius:999px;padding:1px 9px;margin-bottom:4px;border:1px solid currentColor}
.ot-tag.tc{color:var(--info)}.ot-tag.td{color:var(--saff)}
.ot-oqt{font-family:var(--serif);font-size:1.05rem;line-height:1.45}
.ot-src{margin:10px 0 0 38px;padding:8px 12px;border-radius:10px;background:color-mix(in srgb,var(--info) 7%,var(--card));font-size:.88rem}
.ot-links a{white-space:nowrap}
@media(max-width:560px){.ot-links a{white-space:normal}}
.ot-oq textarea{display:block;width:calc(100% - 38px);box-sizing:border-box;margin:10px 0 0 38px;font:inherit;font-size:.95rem;padding:10px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--paper);color:var(--ink);resize:vertical}
.ot-oq textarea:focus{outline:none;border-color:var(--acc)}
.ot-oact{margin:8px 0 0 38px;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:flex-start;font-size:.9rem}
.ot-oact label{display:inline-flex;gap:6px;align-items:center;font-weight:700;color:var(--muted);cursor:pointer}
.ot-oact details{flex:1 1 260px}
.ot-oact summary{cursor:pointer;font-weight:800;color:var(--acc)}
.ot-ans{margin-top:8px;padding:10px 12px;border-radius:10px;background:color-mix(in srgb,var(--ok) 8%,var(--card));border-left:4px solid var(--ok)}
@media(max-width:560px){.ot-src,.ot-oact{margin-left:0}.ot-oq textarea{width:100%;margin-left:0}}