:root {
  --bg: #efeeec;
  --paper: #ffffff;
  --ink: #222;
  --muted: #666;
  --line: #d8d6d2;
  --dash: #333;
  /* module colours (panel headers / chips) */
  --m-global: #cfd8dc; --m-gl: #ffcc80; --m-tax: #ffcc80; --m-ar: #90caf9; --m-ap: #b39ddb;
  --m-bl: #80cbc4; --m-aa: #ffcdd2; --m-co: #e57373; --m-sd: #fff176; --m-mm: #4dd0e1;
  --m-pp: #c8e6c9; --m-le: #fff9c4; --m-pm: #b2ebf2; --m-hr: #e1bee7; --m-abap: #d7ccc8; --m-basis: #c5cae9;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
}
a { color: inherit; }
code, .tab, .chip { font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace; }

/* module colour helpers */
.m-global { background: var(--m-global); } .m-gl { background: var(--m-gl); } .m-tax { background: var(--m-tax); }
.m-ar { background: var(--m-ar); } .m-ap { background: var(--m-ap); } .m-bl { background: var(--m-bl); }
.m-aa { background: var(--m-aa); } .m-co { background: var(--m-co); } .m-sd { background: var(--m-sd); }
.m-mm { background: var(--m-mm); } .m-pp { background: var(--m-pp); } .m-le { background: var(--m-le); }
.m-pm { background: var(--m-pm); } .m-hr { background: var(--m-hr); } .m-abap { background: var(--m-abap); }
.m-basis { background: var(--m-basis); }

/* ---------- sheet header ---------- */
.top {
  display: flex; align-items: flex-start; gap: 24px; flex-wrap: wrap;
  padding: 28px 40px 8px; max-width: 1480px; margin: 0 auto;
}
.top .tl { flex: 1 1 360px; min-width: 0; }
.top h1 { margin: 0; font-size: 26px; font-weight: 700; display: flex; align-items: center; flex-wrap: wrap; gap: 0 10px; }
.top h1 a { text-decoration: none; }
.sep { display: inline-block; width: 1px; height: .9em; background: #555; margin: 0 6px; vertical-align: middle; }
.top .sub { margin: 4px 0 0; font-size: 13px; color: var(--muted); }
.top .tr { text-align: right; flex: 0 0 auto; }
.brand { font-family: "Noto Serif TC", serif; font-weight: 700; font-size: 17px; }
.pg { font-size: 12px; color: var(--muted); margin-top: 6px; }

.modnav { display: flex; flex-wrap: wrap; border: 1px solid #aaa; margin-top: 6px; align-self: flex-start; }
.modnav .mn { font-size: 11px; padding: 4px 6px; text-decoration: none; color: #555; opacity: .55; }
.modnav .mn:hover { opacity: 1; }
.modnav .mn.on { opacity: 1; font-weight: 700; color: #000; outline: 2px solid #222; outline-offset: -2px; }

/* ---------- columns & panels ---------- */
.cols { display: flex; gap: 20px; padding: 16px 40px 8px; max-width: 1480px; margin: 0 auto; align-items: stretch; }
.col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; flex: 1 1 auto; }
.col .panel:not(:last-child) { flex: 0 0 auto; }
.ph { margin: 0; padding: 10px 16px; font-size: 18px; font-weight: 400; display: flex; align-items: center; gap: 4px; }
.ph b { font-weight: 700; }
.pb { padding: 14px 20px 20px; display: flex; flex-direction: column; gap: 10px; }

/* cards */
.card {
  border: 1px solid #555; padding: 8px 10px; text-align: center; font-size: 15px; line-height: 1.45;
}
.card .ct { font-size: 15.5px; }
.card .cl { font-size: 14px; }
.card.key { border-width: 2.5px; border-color: #222; }
.card.key .ct, .card.key .cl { font-weight: 700; }
.card.xref { border: 2.5px dashed var(--dash); }
.ref { font-size: 10.5px; color: #333; font-weight: 400; }
.chip {
  display: inline-block; background: #fff; border: 1px solid #777; border-radius: 3px;
  font-size: 11.5px; padding: 0 6px; margin: 2px 2px; line-height: 1.6; white-space: nowrap; font-weight: 400;
}
.arrow .chip { font-size: 10.5px; padding: 0 4px; margin: 0 0 0 2px; }

.group { border: 1px solid #555; }
.group.key { border-width: 2px; border-color: #333; }
.group > .card { border: 0; }
.group > .card + .card { border-top: 1px dashed #777; }

.row { display: flex; gap: 8px; align-items: stretch; }
.rcol { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.rcol > .card { flex: 1 1 auto; display: flex; flex-direction: column; justify-content: center; }
.rcol > .arrow + .card, .rcol > .card:only-child { flex: 1 1 auto; }

.arrow { display: flex; flex-direction: column; align-items: center; font-size: 12.5px; line-height: 1.3; margin: -6px 0; }
.arrow .stem { width: 1px; height: 8px; background: #333; }
.arrow .al { padding: 1px 0; text-align: center; }
.arrow .head { font-size: 10px; line-height: 1; color: #333; }

.note {
  background: #fff59d; border-left: 4px solid #e2c84a; padding: 8px 12px; font-size: 13.5px;
  text-align: center; position: relative;
}
.note::after { content: ""; position: absolute; top: 0; right: 0; border-style: solid; border-width: 0 9px 9px 0; border-color: transparent #d9bd34 transparent transparent; }
.lbl { font-size: 12.5px; font-weight: 700; color: #555; margin-top: 4px; margin-bottom: -4px; letter-spacing: .02em; }

/* card colours */
.c-gray { background: #cfd8dc; } .c-pink { background: #ffcdd2; } .c-orange { background: #ffb74d; }
.c-green { background: #c8e6c9; } .c-yellow { background: #fff176; } .c-peach { background: #ffe0b2; }
.c-red { background: #e57373; } .c-tax { background: #ffcc80; } .c-ar { background: #e3f2fd; }
.c-ap { background: #ede7f6; } .c-bl { background: #e0f2f1; } .c-aa { background: #fdecee; }
.c-co { background: #fce0e0; } .c-sd { background: #fff176; } .c-sdl { background: #fff9c4; }
.c-mm { background: #4dd0e1; } .c-le { background: #fff9c4; } .c-pm { background: #b2ebf2; }
.c-hr { background: #e1bee7; } .c-abap { background: #efebe9; } .c-basis { background: #c5cae9; }
.c-basisl { background: #e8eaf6; }
.group.c-pink, .group.c-pm, .group.c-gray { background: none; }

/* quick tables */
.quick { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.quick th { text-align: left; font-weight: 700; padding: 4px 6px; border-bottom: 3px solid #222; white-space: nowrap; }
.quick td { padding: 6px; border-bottom: 1px solid #ddd; vertical-align: middle; }
.quick td.tab { font-weight: 700; font-size: 12.5px; }
.quick tr:target td { background: #fff59d; }
.tc { display: inline-block; font-weight: 700; padding: 1px 7px; border: 1px solid #555; white-space: nowrap; text-decoration: none; }

/* footer */
.foot {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px;
  max-width: 1480px; margin: 0 auto; padding: 12px 40px 28px; font-size: 12px; color: #555;
}
.pn { display: flex; gap: 18px; }
.pn a { text-decoration: none; font-weight: 500; }
.pn a:hover { text-decoration: underline; }

/* ---------- home ---------- */
.hero {
  max-width: 1280px; margin: 0 auto; padding: 36px 24px 12px;
  display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 12px;
}
.hero h1 { margin: 0; font-size: 32px; }
.hero p { margin: 6px 0 0; color: var(--muted); }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.sec { font-size: 20px; margin: 28px 0 12px; }
.sec small { font-size: 13px; font-weight: 400; color: var(--muted); margin-left: 8px; }
.tocgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.toc {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto auto; column-gap: 10px;
  padding: 12px 14px; border-radius: 6px; text-decoration: none; border: 1px solid rgba(0,0,0,.15);
  transition: transform .12s, box-shadow .12s;
}
.toc:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.toc .no { grid-row: 1 / 4; font: 700 22px/1 "JetBrains Mono", monospace; opacity: .55; padding-top: 2px; }
.toc .tt { font-weight: 700; font-size: 16px; }
.toc .ss { font-size: 12px; color: #333; }
.toc .cnt { font-size: 11px; color: #444; margin-top: 4px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.filters input, .filters select {
  font: inherit; padding: 8px 12px; border: 1px solid #aaa; border-radius: 6px; background: #fff;
}
.filters input { flex: 1 1 280px; min-width: 0; }
.tblwrap { background: #fff; border: 1px solid var(--line); border-radius: 6px; overflow-x: auto; }
.all { width: 100%; border-collapse: collapse; font-size: 14px; }
.all th { text-align: left; padding: 8px 10px; border-bottom: 3px solid #222; position: sticky; top: 0; background: #fff; white-space: nowrap; }
.all td { padding: 6px 10px; border-bottom: 1px solid #e3e3e3; }
.all td.tab { font-weight: 700; font-size: 13px; }
#empty { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .cols { flex-direction: column; padding: 12px 16px; }
  .col { flex: 1 1 auto !important; }
  .top { padding: 20px 16px 4px; }
  .top .tr { text-align: left; }
  .foot { padding: 12px 16px 24px; }
}
@media (max-width: 520px) {
  .top h1 { font-size: 21px; }
  .pb { padding: 12px; }
  .row { flex-wrap: wrap; }
  .rcol { flex: 1 1 140px; }
  .hero { padding: 24px 16px 8px; }
  .hero h1 { font-size: 25px; }
  .wrap { padding: 0 16px; }
}
@media print {
  body { background: #fff; }
  .modnav, .pn { display: none; }
  .cols { padding: 8px 0; }
}

/* ---------- full-text search ---------- */
.sbox { position: relative; flex: 1 1 260px; max-width: 420px; align-self: center; }
.wrap > .sbox { max-width: none; margin-top: 8px; }
.sq {
  width: 100%; font: inherit; font-size: 14px; padding: 8px 12px; border: 1px solid #aaa; border-radius: 6px; background: #fff;
}
.wrap > .sbox .sq { font-size: 16px; padding: 12px 14px; }
.sres {
  position: absolute; left: 0; right: 0; top: calc(100% + 4px); z-index: 50; background: #fff; border: 1px solid #bbb;
  border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.15); max-height: 70vh; overflow-y: auto; min-width: min(480px, 92vw);
}
.scount { padding: 6px 12px; font-size: 12px; color: var(--muted); border-bottom: 1px solid #eee; }
.sh { display: flex; gap: 10px; padding: 8px 12px; text-decoration: none; border-bottom: 1px solid #f0f0f0; }
.sh:hover, .sh:focus { background: #fffbe0; }
.sp { flex: 0 0 auto; font: 700 12px/1 "JetBrains Mono", monospace; padding: 5px 6px; border: 1px solid rgba(0,0,0,.25); height: fit-content; }
.sb { display: flex; flex-direction: column; min-width: 0; }
.st { font-size: 12px; color: var(--muted); }
.sx { font-size: 14px; }
.sx mark { background: #ffe066; padding: 0 1px; }
.card:target, .note:target { outline: 3px solid #ff7a00; outline-offset: 2px; scroll-margin-top: 80px; }
.quick tr:target { scroll-margin-top: 80px; }
@media (max-width: 1000px) { .sbox { max-width: none; flex-basis: 100%; order: 3; } }
.top .sbox { flex: 1 1 100%; max-width: none; order: 5; }
.top .sres { right: auto; width: min(720px, 100%); min-width: 0; }
.arrow:target { outline: 3px solid #ff7a00; outline-offset: 2px; scroll-margin-top: 80px; }

/* ---------- left navigation ---------- */
.layout { display: flex; align-items: flex-start; min-height: 100vh; }
.content { flex: 1 1 auto; min-width: 0; }
.side {
  flex: 0 0 236px; width: 236px; position: sticky; top: 0; height: 100vh; overflow-y: auto;
  background: #fbfaf8; border-right: 1px solid var(--line); padding: 14px 10px 32px; font-size: 13.5px;
}
.sidehome { display: block; text-decoration: none; font-weight: 700; font-size: 15px; padding: 6px 8px 12px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.sidehome small { display: block; font-weight: 400; font-size: 11.5px; color: var(--muted); }
.sidehome.on { color: #000; }
.sg { margin: 6px 0 10px; }
.sgh { display: flex; align-items: baseline; gap: 6px; padding: 4px 8px; border-radius: 4px; font-size: 13px; }
.sgh small { font-size: 11px; color: #444; }
.sl { display: flex; gap: 6px; padding: 4px 8px 4px 10px; text-decoration: none; color: #333; border-left: 3px solid transparent; line-height: 1.35; }
.sl:hover { background: #f0eee9; }
.sl.on { border-left-color: #222; background: #ece9e3; font-weight: 700; color: #000; }
.sn { font: 11px/1.6 "JetBrains Mono", monospace; color: #888; flex: 0 0 auto; }
.navbtn { display: none; }
.scrim { display: none; }
.cath { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 400; color: var(--muted); margin: 18px 0 8px; }
.cb { font-weight: 700; color: #222; padding: 2px 10px; border-radius: 4px; font-size: 15px; }
.wrap p.empty { color: var(--muted); font-size: 13px; margin: 0 0 6px; }
@media (max-width: 1000px) {
  .side {
    position: fixed; left: 0; top: 0; bottom: 0; height: auto; z-index: 100; width: min(300px, 84vw);
    transform: translateX(-105%); transition: transform .2s; box-shadow: 0 0 24px rgba(0,0,0,.2);
  }
  #navt:checked ~ .layout .side { transform: none; }
  #navt:checked ~ .layout .scrim { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 90; }
  .navbtn {
    display: inline-flex; align-items: center; gap: 4px; flex: 0 0 100%; width: fit-content; cursor: pointer;
    font-size: 14px; padding: 6px 12px; border: 1px solid #999; border-radius: 6px; background: #fff; margin-bottom: 4px;
  }
  .hero .navbtn { flex-basis: auto; }
}

/* ---------- 3-level navigation ---------- */
:root { --m-im: #ffccbc; }
.m-im { background: var(--m-im); }
.c-im { background: #fbe9e7; }
.side details > summary { list-style: none; cursor: pointer; }
.side details > summary::-webkit-details-marker { display: none; }
.sgh::before, .ssh::before { content: "▸"; font-size: 11px; width: 10px; display: inline-block; transition: transform .15s; }
details[open] > .sgh::before, details[open] > .ssh::before { transform: rotate(90deg); }
.cnt2 { margin-left: auto; font: 11px/1.4 "JetBrains Mono", monospace; color: #555; }
.ss2 { margin: 2px 0 2px 8px; }
.ssh { display: flex; align-items: center; gap: 6px; padding: 4px 6px; border-radius: 4px; font-size: 13px; }
.ssh:hover { background: #f0eee9; }
.ssh small { font-size: 11px; color: var(--muted); }
.ss2 .sl { padding-left: 22px; }
.dot { width: 9px; height: 9px; border-radius: 2px; border: 1px solid rgba(0,0,0,.25); flex: 0 0 auto; }
.nopage { margin: 2px 0 4px 24px; font-size: 12px; color: var(--muted); }
.subh { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 400; color: var(--muted); margin: 12px 0 8px 14px; }
.subh .cb { font-size: 13px; }
.chip.tcd { background: #222; color: #fff; border-color: #222; font-weight: 700; }
.chip.tcd .tp { color: #bbb; font-weight: 400; }
.chip.app { background: #e8f0fe; border-color: #8ab4f8; }
.card.step { text-align: left; display: grid; grid-template-columns: auto 1fr; column-gap: 10px; }
.ph b { white-space: nowrap; }
:root { --m-ps: #d1c4e9; --m-cs: #ffe082; --m-ehs: #a5d6a7; }
.m-ps { background: var(--m-ps); } .m-cs { background: var(--m-cs); } .m-ehs { background: var(--m-ehs); }
.c-ps { background: #f3e5f5; } .c-cs { background: #fff8e1; } .c-ehs { background: #e8f5e9; }