/* ============================================================
   manual.css · 安卓apk官方安装 内页骨架：安装说明书
   白纸 + 深蓝墨 + 规则线框，编号章节与表格化步骤
   ============================================================ */

.page-manual {
  --paper: #ffffff;
  --ink: #14213d;
  --ink-soft: #4a566e;
  --ink-faint: #8a94a8;
  --line: rgba(20, 33, 61, 0.14);
  --accent: #14213d;
  --accent-ink: #ffffff;
  --seal: #b42318;
  --header-bg: rgba(255, 255, 255, 0.92);
  --header-fg: #14213d;
  --header-line: rgba(20, 33, 61, 0.12);
  --tab-on: #14213d;
  --tab-on-fg: #ffffff;
  background: var(--paper);
}

/* doc frame */
.mn-wrap { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 48px; align-items: start; padding-top: 44px; }
.mn-wrap > * { min-width: 0; }

/* toc */
.mn-toc {
  position: sticky;
  top: 92px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfbfd;
}
.mn-toc .mn-toc-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
}
.mn-toc ol { margin-top: 14px; display: grid; gap: 2px; counter-reset: toc; }
.mn-toc a {
  display: flex;
  gap: 10px;
  padding: 7px 8px;
  border-radius: 7px;
  font-size: 13px;
  color: var(--ink-soft);
  transition: background 0.2s, color 0.2s;
}
.mn-toc a::before {
  counter-increment: toc;
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-faint);
  line-height: 1.8;
}
.mn-toc a:hover { background: rgba(20, 33, 61, 0.05); color: var(--ink); }
.mn-toc .foot { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-faint); }

/* hero inside doc */
.mn-hero { padding-bottom: 34px; border-bottom: 2px solid var(--ink); margin-bottom: 40px; }
.mn-hero .crumb { opacity: 0.6; }
.mn-docno {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--seal);
}
.mn-title {
  margin-top: 16px;
  font-size: clamp(32px, 4.4vw, 50px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.025em;
}
.mn-title span { display: block; font-size: 0.5em; font-weight: 500; letter-spacing: 0.01em; color: var(--ink-soft); margin-top: 10px; }
.mn-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--ink-faint);
}
.mn-meta b { color: var(--ink-soft); font-weight: 600; }
.mn-herogrid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 36px; align-items: center; margin-top: 26px; }
.mn-herogrid figure { margin: 0; }
.mn-herogrid img { width: 100%; height: auto; }
.mn-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.mn-actions .btn-primary { border-radius: 8px; }
.mn-actions .btn-room { border-radius: 8px; }

/* sections */
.mn-sec { padding: 8px 0 44px; }
.mn-sec + .mn-sec { border-top: 1px solid var(--line); padding-top: 36px; }
.mn-sec h2 {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 900;
  letter-spacing: -0.01em;
}
.mn-sec h2 .sn {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--seal);
}
.mn-sec > p { font-size: 14.5px; color: var(--ink-soft); max-width: 52em; }
.mn-sec > p + p { margin-top: 10px; }

/* steps table */
.mn-steps { margin-top: 22px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.mn-steprow {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 220px;
  border-bottom: 1px solid var(--line);
}
.mn-steprow:last-child { border-bottom: 0; }
.mn-steprow > div { padding: 18px 20px; }
.mn-steprow .n {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  border-right: 1px solid var(--line);
  background: rgba(20, 33, 61, 0.025);
}
.mn-steprow h3 { font-size: 15.5px; font-weight: 800; }
.mn-steprow p { margin-top: 4px; font-size: 13.5px; color: var(--ink-soft); }
.mn-steprow .chk {
  border-left: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-soft);
  background: rgba(20, 33, 61, 0.02);
}
.mn-steprow .chk::before { content: "✓ 完成标志"; display: block; margin-bottom: 4px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--seal); }

/* note */
.mn-note {
  margin-top: 18px;
  padding: 16px 18px;
  border-left: 3px solid var(--seal);
  background: #fbf7f6;
  font-size: 13.5px;
  color: var(--ink-soft);
}
.mn-note b { color: var(--seal); }

/* errors */
.mn-errs { margin-top: 22px; border-top: 1px solid var(--ink); }
.mn-err { border-bottom: 1px solid var(--line); }
.mn-err .q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 16px 0;
  border: 0;
  background: transparent;
  text-align: left;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
}
.mn-err .q code { font-family: var(--font-mono); font-size: 12.5px; color: var(--seal); margin-right: 8px; }
.mn-err .q::after { content: "+"; font-weight: 400; font-size: 18px; opacity: 0.5; transition: transform 0.25s var(--ease); }
.mn-err .q[aria-expanded="true"]::after { transform: rotate(45deg); opacity: 1; }
.mn-err .p { padding: 0 0 18px; font-size: 14px; color: var(--ink-soft); }
.mn-err .p[hidden] { display: none; }
.mn-err .p b { color: var(--ink); }

/* per-rom table */
.mn-tablewrap { margin-top: 22px; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.mn-table { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 14px; }
.mn-table th, .mn-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.mn-table th { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em; color: var(--ink-faint); background: rgba(20, 33, 61, 0.03); }
.mn-table tr:last-child td { border-bottom: 0; }
.mn-table code { font-family: var(--font-mono); font-size: 12.5px; color: var(--accent); }

/* two lists */
.mn-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 22px; }
.mn-box { padding: 22px; border: 1px solid var(--line); border-radius: 10px; }
.mn-box h3 { font-size: 14.5px; font-weight: 800; letter-spacing: 0.01em; }
.mn-box.good h3 { color: #067647; }
.mn-box.bad h3 { color: var(--seal); }
.mn-box ul { margin-top: 12px; display: grid; gap: 8px; font-size: 13.5px; color: var(--ink-soft); }
.mn-box li { padding-left: 18px; position: relative; }
.mn-box.good li::before { content: "✓"; position: absolute; left: 0; color: #067647; }
.mn-box.bad li::before { content: "✕"; position: absolute; left: 0; color: var(--seal); }

/* faq */
.mn-faq { margin-top: 22px; border-top: 1px solid var(--line); }

/* related */
.mn-related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 22px; }
.mn-related a { display: block; padding: 18px; border: 1px solid var(--line); border-radius: 10px; transition: border-color 0.2s, background 0.2s; }
.mn-related a:hover { border-color: var(--ink); background: #fbfbfd; }
.mn-related em { display: block; font-style: normal; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--ink-faint); }
.mn-related b { display: block; margin-top: 6px; font-size: 15.5px; }
.mn-related span { display: block; margin-top: 2px; font-size: 12.5px; color: var(--ink-faint); }

/* sign-off */
.mn-signoff {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: center;
  margin-top: 40px;
  padding: 28px 30px;
  border: 1px solid var(--ink);
  border-radius: 12px;
  background: #fbfbfd;
}
.mn-signoff h2 { font-size: 20px; font-weight: 900; }
.mn-signoff p { margin-top: 6px; font-size: 13.5px; color: var(--ink-soft); }
.mn-signoff .actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.mn-seal {
  display: grid;
  place-items: center;
  width: 150px;
  height: 150px;
  margin-inline: auto;
  border: 2px solid var(--seal);
  border-radius: 50%;
  color: var(--seal);
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  text-align: center;
  transform: rotate(-9deg);
  opacity: 0.85;
}

/* responsive */
@media (max-width: 1080px) {
  .mn-wrap { grid-template-columns: 1fr; gap: 28px; padding-top: 30px; }
  .mn-toc { position: static; }
  .mn-toc ol { grid-template-columns: 1fr 1fr; }
  .mn-herogrid { grid-template-columns: 1fr; }
  .mn-herogrid figure { max-width: 420px; order: -1; }
}
@media (max-width: 700px) {
  .mn-steprow { grid-template-columns: 48px minmax(0, 1fr); }
  .mn-steprow .chk { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); }
  .mn-cols { grid-template-columns: 1fr; }
  .mn-related { grid-template-columns: 1fr; }
  .mn-signoff { grid-template-columns: 1fr; padding: 22px; }
  .mn-toc ol { grid-template-columns: 1fr; }
}