/* lykiv.css */
:root {
  --bg: #ECEEF1;
  --paper: #FFFFFF;
  --paper-2: #F5F6F8;
  --ink: #1E232A;
  --ink-2: #4A525E;
  --ink-3: #737C88;
  --line: #D3D8DE;
  --line-2: #E4E7EB;
  --coral: #E25B43;
  --coral-d: #B5402B;
  --coral-s: #FCEBE6;
  --coral-t: #F5C9BE;
  --ok: #2C7A57;
  --amber: #A86A12;
  --r: 12px;
  --r-s: 7px;
  --sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.8 var(--sans);
  overflow-wrap: break-word;
}
img, svg { max-width: 100%; }
a { color: var(--coral-d); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--coral); }
:focus-visible { outline: 3px solid var(--coral); outline-offset: 2px; }
code, .kv-inline-code { font-family: var(--mono); font-size: .92em; background: var(--paper-2); border: 1px solid var(--line-2); border-radius: 5px; padding: 1px 6px; }

/* 顶部进度条 */
.kv-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60;
  background: var(--coral); transform-origin: 0 50%; transform: scaleX(0);
}
@supports (animation-timeline: scroll()) {
  .kv-progress { animation: kv-grow linear both; animation-timeline: scroll(root block); }
  @keyframes kv-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
}

.kv-skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 6px; z-index: 70; }
.kv-skip:focus { left: 12px; }

/* 页头 */
.kv-top { background: var(--bg); border-bottom: 1px solid var(--line); }
.kv-top-in { max-width: 1180px; margin: 0 auto; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; position: relative; }
.kv-logo { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; color: var(--ink); text-decoration: none; }
.kv-logo span { font: 800 19px/1 var(--sans); letter-spacing: .16em; }
.kv-logo:hover { color: var(--ink); }
.kv-logo-mark { flex: none; }
.kv-menu > summary {
  list-style: none; cursor: pointer; user-select: none;
  font-size: 14px; padding: 0 16px; min-height: 44px; display: inline-flex; align-items: center; border: 1.5px solid var(--ink); border-radius: 999px; line-height: 1.4;
}
.kv-menu > summary::-webkit-details-marker { display: none; }
.kv-menu[open] > summary { background: var(--ink); color: #fff; }
.kv-menu ul {
  list-style: none; margin: 0; padding: 8px; position: absolute; right: 16px; top: 54px; z-index: 40;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-s); box-shadow: 0 10px 30px rgba(30, 35, 42, .12); min-width: 168px;
}
.kv-menu li a { display: block; padding: 11px 12px; color: var(--ink); text-decoration: none; border-radius: 5px; }
.kv-menu li a:hover, .kv-menu li a[aria-current="page"] { background: var(--coral-s); color: var(--coral-d); }
@media (min-width: 760px) {
  .kv-js .kv-menu > summary { display: none; }
  .kv-js .kv-menu ul { position: static; display: flex; gap: 4px; padding: 0; border: 0; box-shadow: none; background: none; min-width: 0; }
  .kv-js .kv-menu li a { font-size: 15px; padding: 6px 12px; }
}

/* 首屏：一张清单纸 */
.kv-cover { padding: 18px 16px 8px; }
.kv-cover-in {
  max-width: 1180px; margin: 0 auto; background: var(--paper);
  border: 1px solid var(--line); border-top: 5px solid var(--coral); border-radius: var(--r);
  padding: 20px 18px 22px;
}
.kv-kicker { margin: 0 0 6px; font: 700 13px/1.5 var(--sans); letter-spacing: .02em; color: var(--coral-d); }
.kv-cover h1 { margin: 0; font-size: 26px; line-height: 1.32; font-weight: 800; letter-spacing: -.01em; text-wrap: balance; }
.kv-lead { margin: 10px 0 0; color: var(--ink-2); font-size: 15px; line-height: 1.75; }
.kv-pickzone { display: grid; gap: 16px; margin-top: 16px; grid-template-areas: "card" "pick"; }
.kv-cardslot { grid-area: card; }
.kv-pick { grid-area: pick; }

/* 设备三选一（纯 CSS 单选） */
.kv-pick-q { margin: 0 0 8px; font-weight: 700; font-size: 15px; }
.kv-pick-r { position: absolute; opacity: 0; width: 1px; height: 1px; pointer-events: none; }
.kv-pick-opts { border: 1px solid var(--line); border-radius: var(--r-s); overflow: hidden; }
.kv-pick-opts label {
  display: grid; grid-template-columns: 22px 1fr; column-gap: 12px; align-items: center;
  padding: 11px 14px; cursor: pointer; border-top: 1px dashed var(--line); background: var(--paper);
}
.kv-pick-opts label:first-child { border-top: 0; }
.kv-pick-opts label:hover { background: var(--paper-2); }
.kv-pick-opts .box { grid-row: span 2; width: 20px; height: 20px; border: 2px solid var(--ink-3); border-radius: 5px; position: relative; }
.kv-pick-opts b { font-size: 15.5px; line-height: 1.45; }
.kv-pick-opts small { grid-column: 2; color: var(--ink-3); font-size: 13px; line-height: 1.5; }
.kv-pick-routes { margin-top: 10px; background: var(--paper-2); border-radius: var(--r-s); padding: 10px 14px; font-size: 14.5px; line-height: 1.7; color: var(--ink-2); min-height: 52px; }
.kv-pick-routes .r { display: none; margin: 0; }
.kv-pick-routes .r-idle { display: block; }
.kv-pick-routes a { font-weight: 700; white-space: nowrap; }
.kv-pick-r:nth-of-type(1):checked ~ .kv-pick-opts > label:nth-child(1),
.kv-pick-r:nth-of-type(2):checked ~ .kv-pick-opts > label:nth-child(2),
.kv-pick-r:nth-of-type(3):checked ~ .kv-pick-opts > label:nth-child(3),
.kv-pick-r:nth-of-type(4):checked ~ .kv-pick-opts > label:nth-child(4) { background: var(--coral-s); }
.kv-pick-r:nth-of-type(1):checked ~ .kv-pick-opts > label:nth-child(1) .box,
.kv-pick-r:nth-of-type(2):checked ~ .kv-pick-opts > label:nth-child(2) .box,
.kv-pick-r:nth-of-type(3):checked ~ .kv-pick-opts > label:nth-child(3) .box,
.kv-pick-r:nth-of-type(4):checked ~ .kv-pick-opts > label:nth-child(4) .box { background: var(--coral); border-color: var(--coral); }
.kv-pick-r:checked ~ .kv-pick-opts .box::after { content: none; }
.kv-pick-r:nth-of-type(1):checked ~ .kv-pick-opts > label:nth-child(1) .box::after,
.kv-pick-r:nth-of-type(2):checked ~ .kv-pick-opts > label:nth-child(2) .box::after,
.kv-pick-r:nth-of-type(3):checked ~ .kv-pick-opts > label:nth-child(3) .box::after,
.kv-pick-r:nth-of-type(4):checked ~ .kv-pick-opts > label:nth-child(4) .box::after {
  content: ""; position: absolute; left: 5px; top: 1px; width: 6px; height: 11px; border: solid #fff; border-width: 0 2.5px 2.5px 0; transform: rotate(45deg);
}
.kv-pick-r:nth-of-type(1):focus-visible ~ .kv-pick-opts > label:nth-child(1),
.kv-pick-r:nth-of-type(2):focus-visible ~ .kv-pick-opts > label:nth-child(2),
.kv-pick-r:nth-of-type(3):focus-visible ~ .kv-pick-opts > label:nth-child(3),
.kv-pick-r:nth-of-type(4):focus-visible ~ .kv-pick-opts > label:nth-child(4) { outline: 3px solid var(--coral); outline-offset: -3px; }
.kv-pick-r:checked ~ .kv-pick-routes .r-idle { display: none; }
.kv-pick-r:nth-of-type(1):checked ~ .kv-pick-routes .r:nth-child(2),
.kv-pick-r:nth-of-type(2):checked ~ .kv-pick-routes .r:nth-child(3),
.kv-pick-r:nth-of-type(3):checked ~ .kv-pick-routes .r:nth-child(4),
.kv-pick-r:nth-of-type(4):checked ~ .kv-pick-routes .r:nth-child(5) { display: block; }

/* 码卡 */
.kv-card {
  background: var(--paper); border: 2px solid var(--ink); border-radius: var(--r);
  padding: 12px 16px 14px; box-shadow: 5px 5px 0 var(--coral-t);
}
.kv-card-h { margin: 0; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--ink-3); }
.kv-copy {
  font: 600 14px/1 var(--sans); color: var(--ink); background: var(--paper); cursor: pointer;
  border: 1.5px solid var(--ink); border-radius: 999px; padding: 9px 20px; min-height: 44px;
}
.kv-copy:hover { background: var(--paper-2); }
.kv-copy.is-on { background: var(--ok); border-color: var(--ok); color: #fff; }
.kv-code { margin: 2px 0 10px; font: 700 30px/1.25 var(--mono); letter-spacing: .14em; color: var(--ink); padding-bottom: 10px; border-bottom: 2px dashed var(--line); user-select: all; }
.kv-go {
  display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px;
  background: var(--coral); color: #fff; font-weight: 700; font-size: 16.5px; text-decoration: none; border-radius: 9px; padding: 10px 14px;
}
.kv-go::after { content: "↗"; font-size: 15px; opacity: .9; }
.kv-go:hover { background: var(--coral-d); color: #fff; }
.kv-gain { margin: 10px 0 0; font-weight: 700; font-size: 15.5px; line-height: 1.55; }
.kv-gain sup { color: var(--coral-d); }
.kv-disc { margin: 4px 0 0; font-size: 13px; line-height: 1.6; color: var(--ink-2); }
.kv-fine { margin: 6px 0 0; font-size: 12px; line-height: 1.6; color: var(--ink-3); }

/* 正文区 */
.kv-doc { max-width: 1212px; margin: 0 auto; padding: 10px 16px 56px; }
.kv-toc { margin-bottom: 8px; }
.kv-toc-box { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-s); }
.kv-toc-box > summary { cursor: pointer; padding: 11px 14px; font-weight: 700; font-size: 15px; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.kv-toc-box > summary::-webkit-details-marker { display: none; }
.kv-toc-box > summary::after { content: "展开"; font: 500 12.5px/1 var(--mono); color: var(--coral-d); }
.kv-toc-box[open] > summary::after { content: "收起"; }
.kv-toc ol, .kv-toc-inline ul { list-style: none; margin: 0; padding: 0 10px 10px; counter-reset: toc; }
.kv-toc li { counter-increment: toc; }
.kv-toc li a { display: grid; grid-template-columns: 18px 1fr; gap: 10px; align-items: start; min-height: 44px; padding: 10px 6px; color: var(--ink-2); text-decoration: none; font-size: 14px; line-height: 1.5; border-radius: 5px; }
.kv-toc li a:hover { background: var(--paper-2); color: var(--ink); }
.kv-toc li a i { width: 16px; height: 16px; margin-top: 2px; border: 1.8px solid var(--ink-3); border-radius: 4px; position: relative; }
.kv-toc li a span::before { content: counter(toc, decimal-leading-zero) " "; font-family: var(--mono); color: var(--ink-3); font-size: 12.5px; }
.kv-toc li.is-done a i { background: var(--coral); border-color: var(--coral); }
.kv-toc li.is-done a i::after { content: ""; position: absolute; left: 4px; top: 0; width: 5px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.kv-toc li.is-now a { color: var(--ink); font-weight: 700; background: var(--coral-s); }

.kv-prose { min-width: 0; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 18px 26px; counter-reset: ch; }
.kv-byline { margin: 0 0 4px; display: flex; flex-wrap: wrap; gap: 4px 16px; font: 500 12.5px/1.6 var(--mono); color: var(--ink-3); }
.kv-byline a { color: var(--ink-2); }
.kv-prose p, .kv-prose li { overflow-wrap: anywhere; }
.kv-prose h2 { counter-increment: ch; margin: 44px 0 14px; padding-top: 22px; border-top: 2px solid var(--ink); font-size: 22px; line-height: 1.4; font-weight: 800; scroll-margin-top: 12px; }
.kv-prose h2::before { content: "第 " counter(ch) " 项"; display: inline-block; margin-bottom: 8px; padding: 2px 9px; font: 700 12.5px/1.6 var(--mono); color: #fff; background: var(--coral); border-radius: 4px; }
.kv-prose h2 .kv-h2-t { display: block; }
.kv-prose > h2:first-of-type { margin-top: 18px; }
.kv-prose h3 { margin: 30px 0 8px; font-size: 18px; line-height: 1.5; font-weight: 750; display: flex; gap: 10px; align-items: baseline; scroll-margin-top: 12px; }
.kv-prose h3::before { content: ""; flex: none; width: 9px; height: 9px; background: var(--coral); border-radius: 2px; transform: translateY(-2px); }
.kv-prose p { margin: 0 0 14px; }
.kv-prose ul, .kv-prose ol { padding-left: 1.4em; margin: 0 0 14px; }
.kv-prose strong { font-weight: 750; }
.kv-plain h2::before, .kv-article h2::before { content: none; }
.kv-plain h2 { border-top-width: 1px; font-size: 20px; }

/* 每章检查表（纯 CSS 可勾） */
.kv-check { margin: 4px 0 20px; background: var(--paper-2); border: 1px solid var(--line-2); border-left: 4px solid var(--coral); border-radius: var(--r-s); padding: 10px 14px 6px; }
.kv-check-h { margin: 0 0 4px !important; font: 700 12.5px/1.6 var(--mono); letter-spacing: .04em; color: var(--coral-d); }
.kv-check ul { list-style: none; padding: 0; margin: 0; }
.kv-check li { margin: 0; }
.kv-check label { display: grid; grid-template-columns: 20px 1fr; gap: 10px; align-items: start; min-height: 44px; padding: 10px 0; cursor: pointer; font-size: 15px; line-height: 1.6; }
.kv-check input {
  appearance: none; -webkit-appearance: none; margin: 3px 0 0; width: 18px; height: 18px;
  border: 2px solid var(--ink-3); border-radius: 4px; background: var(--paper); cursor: pointer; position: relative;
}
.kv-check input:checked { background: var(--coral); border-color: var(--coral); }
.kv-check input:checked::after { content: ""; position: absolute; left: 4px; top: 0; width: 5px; height: 10px; border: solid #fff; border-width: 0 2.2px 2.2px 0; transform: rotate(45deg); }
.kv-check input:checked + span { color: var(--ink-3); text-decoration: line-through; text-decoration-color: var(--coral); }

/* 逐步列表 */
.kv-steps { list-style: none; padding: 0 !important; margin: 6px 0 22px !important; counter-reset: st; border-left: 2px solid var(--line); }
.kv-steps li { counter-increment: st; position: relative; padding: 2px 0 16px 34px; scroll-margin-top: 12px; }
.kv-steps li::before {
  content: counter(st); position: absolute; left: -14px; top: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--ink); color: #fff; font: 700 13px/26px var(--mono); text-align: center;
}
.kv-steps b { display: block; font-size: 16px; line-height: 1.5; }
.kv-steps span { display: block; color: var(--ink-2); font-size: 15px; }

/* 自绘屏幕示意 */
.kv-screen { margin: 10px 0 22px; }
.kv-screen .frame { max-width: 460px; margin: 0 auto; background: var(--paper); border: 1.5px solid var(--ink); border-radius: 10px; overflow: hidden; }
.kv-screen .bar { display: flex; align-items: center; gap: 5px; padding: 8px 10px; background: var(--paper-2); border-bottom: 1px solid var(--line); }
.kv-screen .bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); flex: none; }
.kv-screen .bar span { margin-left: 8px; flex: 1; min-width: 0; font: 500 12px/1.4 var(--mono); color: var(--ink-2); background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kv-screen .body { padding: 18px 22px 20px; display: grid; gap: 9px; }
.kv-screen .body p { margin: 0; }
.kv-screen .s-h { font-weight: 800; font-size: 19px; line-height: 1.4; }
.kv-screen .s-in { border: 1.5px solid var(--line); border-radius: 8px; padding: 9px 12px; color: var(--ink-3); font-size: 14px; }
.kv-screen .s-p { font-size: 12px; color: var(--ink-3); line-height: 1.5; }
.kv-screen .s-btn { background: var(--ink); color: #fff; text-align: center; border-radius: 8px; padding: 9px; font-weight: 700; font-size: 15px; }
.kv-screen .s-alt { border: 1.5px solid var(--line); text-align: center; border-radius: 8px; padding: 8px; font-size: 14px; color: var(--ink-2); }
.kv-screen .s-or { display: flex; align-items: center; gap: 10px; color: var(--ink-3); font-size: 12px; }
.kv-screen .s-or::before, .kv-screen .s-or::after { content: ""; flex: 1; border-top: 1px solid var(--line); }
.kv-screen .s-tag { justify-self: start; display: inline-flex; align-items: center; gap: 6px; color: var(--ok); font-weight: 700; font-size: 14px; }
.kv-screen .s-tag::before { content: ""; width: 16px; height: 16px; border-radius: 50%; background: var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.3l2.6 2.5L12 5.4' fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat; }
.kv-screen .s-note { font-size: 13px; font-weight: 700; color: var(--ink-2); margin-bottom: -4px !important; }
.kv-screen.is-phone .frame { max-width: 300px; border-width: 2px; border-radius: 30px; padding-top: 16px; position: relative; }
.kv-screen.is-phone .frame::before { content: ""; position: absolute; top: 7px; left: 50%; width: 64px; height: 6px; margin-left: -32px; background: var(--line); border-radius: 999px; }
.kv-screen figcaption, .kv-flow figcaption { margin-top: 8px; text-align: center; font-size: 13.5px; color: var(--ink-3); }

/* 自绘流向图 */
.kv-flow { margin: 8px 0 26px; }
.kv-flow-in { background: var(--paper-2); border: 1px solid var(--line-2); border-radius: var(--r); padding: 14px; }
.kv-flow .starts { list-style: none; padding: 0 !important; margin: 0 !important; display: grid; gap: 8px; }
.kv-flow .starts a { display: block; background: var(--paper); border: 1.5px solid var(--ink); border-radius: 9px; padding: 9px 12px; text-decoration: none; color: var(--ink); }
.kv-flow .starts b { display: block; font-size: 15px; }
.kv-flow .starts span { display: block; font-size: 13px; color: var(--ink-3); line-height: 1.5; }
.kv-flow .starts a:hover { border-color: var(--coral); }
.kv-flow .merge { position: relative; margin: 22px auto 0 !important; width: max-content; max-width: 100%; background: var(--ink); color: #fff; font-weight: 700; padding: 7px 18px; border-radius: 999px; font-size: 15px; }
.kv-flow .merge::before { content: ""; position: absolute; left: 50%; top: -20px; height: 18px; border-left: 2px dashed var(--ink-3); }
.kv-flow .then { list-style: none; padding: 0 !important; margin: 14px 0 0 !important; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.kv-flow .then li { display: flex; align-items: center; gap: 6px; }
.kv-flow .then li::before { content: "→"; color: var(--coral); font-weight: 700; }
.kv-flow .then a { position: relative; background: var(--paper); border: 1px solid var(--coral-t); color: var(--coral-d); border-radius: 999px; padding: 4px 12px; font-size: 14px; text-decoration: none; }
.kv-flow .then a::after { content: ""; position: absolute; inset: -9px -2px; }

/* 提示块：补充 / 做对了 / 容易出错 / 先停下 */
.kv-note { --tone: var(--ink-3); --wash: var(--paper-2); margin: 16px 0 20px; padding: 12px 16px 4px; border-radius: var(--r-s); background: var(--wash); border: 1px solid var(--line-2); border-left: 4px solid var(--tone); }
.kv-note.is-ok { --tone: var(--ok); --wash: #EAF4EE; }
.kv-note.is-warn { --tone: var(--amber); --wash: #FBF3E4; }
.kv-note.is-stop { --tone: var(--coral); --wash: var(--coral-s); }
.kv-note-h { margin: 0 0 6px !important; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; }
.kv-note-h .ico { width: 16px; height: 16px; border-radius: 4px; background: var(--tone); position: relative; flex: none; }
.kv-note.is-ok .ico::after { content: ""; position: absolute; left: 5px; top: 2px; width: 4px; height: 8px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.kv-note.is-tip .ico::after { content: ""; position: absolute; left: 7px; top: 3px; width: 2px; height: 10px; background: #fff; border-radius: 1px; }
.kv-note.is-warn .ico::after, .kv-note.is-stop .ico::after { content: "!"; position: absolute; inset: 0; color: #fff; font: 800 12px/16px var(--sans); text-align: center; }
.kv-note-h .lab { font: 700 12.5px/1.6 var(--mono); color: var(--tone); letter-spacing: .04em; }
.kv-note-h b { font-size: 15.5px; }
.kv-note p { margin-bottom: 10px; }

/* 按屏幕状态分流 */
.kv-state { margin: 16px 0 18px; border: 1.5px solid var(--ink); border-radius: 10px; background: var(--paper); overflow: hidden; scroll-margin-top: 12px; }
.kv-state-h { margin: 0 !important; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; padding: 10px 14px; background: var(--paper-2); border-bottom: 1px dashed var(--line); }
.kv-state-h .tag { font: 700 11.5px/1.7 var(--mono); color: #fff; background: var(--ink); border-radius: 4px; padding: 0 7px; flex: none; }
.kv-state-h .say { font-weight: 750; font-size: 15.5px; line-height: 1.55; }
.kv-state-h .say::before { content: "\300C"; color: var(--coral); }
.kv-state-h .say::after { content: "\300D"; color: var(--coral); }
.kv-state-b { padding: 10px 14px 2px; }
.kv-state-b p { margin-bottom: 10px; }

/* 截图、自绘图、两图并排 */
.kv-shot, .kv-fig { margin: 14px 0 22px; }
.kv-shot-frame { display: block; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--paper-2); }
.kv-shot img, .kv-fig img { display: block; width: 100%; height: auto; }
.kv-shot.is-phone .kv-shot-frame { max-width: 300px; margin: 0 auto; border: 7px solid var(--ink); border-radius: 30px; }
.kv-shot figcaption, .kv-fig figcaption { margin-top: 8px; font-size: 13.5px; line-height: 1.6; color: var(--ink-3); text-align: center; }
.kv-shot figcaption .lab { display: inline-block; margin-right: 6px; padding: 0 6px; font: 700 11px/1.7 var(--mono); color: var(--ink-2); border: 1px solid var(--line); border-radius: 4px; vertical-align: 1px; }
.kv-fig img { border-radius: 10px; border: 1px solid var(--line-2); }
.kv-pair { margin: 14px 0 22px; }
.kv-pair-in { display: grid; gap: 14px; align-items: start; }
.kv-pair-in > figure { margin: 0; }
.kv-pair-cap { margin: 8px 0 0 !important; font-size: 13.5px; color: var(--ink-3); text-align: center; }
@media (min-width: 640px) { .kv-pair-in { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* 表格（三列及以上在窄屏改成卡片） */
.kv-table { margin: 8px 0 18px; overflow-x: auto; }
.kv-table table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.6; }
.kv-table th { text-align: left; background: var(--ink); color: #fff; font-weight: 600; padding: 9px 12px; }
.kv-table td { padding: 9px 12px; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.kv-table tbody tr:nth-child(even) td { background: var(--paper-2); }
@media (max-width: 640px) {
  .kv-table.is-wide { overflow: visible; }
  .kv-table.is-wide thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .kv-table.is-wide table, .kv-table.is-wide tbody, .kv-table.is-wide tr, .kv-table.is-wide td { display: block; }
  .kv-table.is-wide tr { border: 1px solid var(--line); border-radius: var(--r-s); margin-bottom: 10px; overflow: hidden; }
  .kv-table.is-wide td { border-bottom: 1px dashed var(--line-2); background: var(--paper) !important; padding: 7px 12px; }
  .kv-table.is-wide td:last-child { border-bottom: 0; }
  .kv-table.is-wide td::before { content: attr(data-th); display: block; font: 600 11.5px/1.5 var(--mono); color: var(--ink-3); }
  .kv-table.is-wide td:first-child { background: var(--paper-2) !important; font-weight: 700; }
}

/* 依据块、FAQ、署名 */
.kv-basis { margin: 30px 0 6px; padding: 14px 16px; border: 1.5px dashed var(--line); border-radius: var(--r-s); font-size: 14px; line-height: 1.75; color: var(--ink-2); }
.kv-basis-h { margin: 0 0 6px !important; font: 700 12.5px/1.6 var(--mono); color: var(--ink); }
.kv-basis p:last-child { margin-bottom: 0; }
.kv-faq { margin-top: 10px; }
.kv-faq-lead { color: var(--ink-2); }
.kv-faq details { border-top: 1px solid var(--line-2); }
.kv-faq details:last-of-type { border-bottom: 1px solid var(--line-2); }
.kv-faq summary { cursor: pointer; list-style: none; display: grid; grid-template-columns: 20px 1fr; gap: 10px; padding: 12px 2px; font-weight: 700; font-size: 15.5px; line-height: 1.6; }
.kv-faq summary::-webkit-details-marker { display: none; }
.kv-faq summary::before { content: ""; width: 16px; height: 16px; margin-top: 4px; border: 2px solid var(--ink-3); border-radius: 4px; }
.kv-faq details[open] summary::before { background: var(--coral); border-color: var(--coral); }
.kv-faq details p { margin: 0 0 14px; padding-left: 30px; color: var(--ink-2); }
.kv-sign { margin-top: 26px; padding-top: 14px; border-top: 1px solid var(--line-2); font-size: 14px; color: var(--ink-2); }
.kv-sign p { margin: 0; }

/* 文章页、栏目页、话题页、站务页的页头（同一张清单纸，比首页矮） */
.kv-cover-art .kv-cover-in, .kv-cover-page .kv-cover-in { padding-top: 16px; }
.kv-cover-art h1, .kv-cover-page h1 { margin: 0; font-size: 24px; line-height: 1.36; font-weight: 800; text-wrap: balance; }
.kv-cover-art .kv-byline { margin-top: 12px; }
.kv-crumbs { list-style: none; padding: 0; margin: 0 0 10px; display: flex; flex-wrap: wrap; gap: 2px 4px; font-size: 13px; color: var(--ink-3); }
.kv-crumbs li + li::before { content: "/"; margin-right: 4px; color: var(--line); }
.kv-crumbs a { color: var(--ink-2); display: inline-block; padding: 12px 2px; margin: -12px -2px; }
.kv-dates { margin: 8px 0 0; font: 500 12.5px/1.6 var(--mono); color: var(--ink-3); }
.kv-doc.is-solo { max-width: 932px; }
.kv-cover.is-narrow .kv-cover-in { max-width: 900px; }
.kv-plain { padding-top: 10px; }
.kv-plain h2 { margin-top: 30px; padding-top: 16px; }
.kv-cover-img { margin: 0 0 18px; }
.kv-cover-img img { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); }
.kv-cover-img figcaption { font-size: 13px; color: var(--ink-3); margin-top: 6px; }

/* 文章列表：一行一条，左边一个方框（清单） */
.kv-listwrap { min-width: 0; }
.kv-list { list-style: none; padding: 0; margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.kv-list li { margin: 0; }
.kv-list li + li { border-top: 1px dashed var(--line); }
.kv-list a { position: relative; display: grid; grid-template-columns: 18px minmax(0, 1fr); column-gap: 14px; row-gap: 2px; padding: 15px 18px; color: var(--ink); text-decoration: none; }
.kv-list a::before { content: ""; grid-row: 1 / span 3; width: 16px; height: 16px; margin-top: 5px; border: 2px solid var(--ink-3); border-radius: 4px; }
.kv-list a:hover { background: var(--coral-s); }
.kv-list a:hover::before { border-color: var(--coral); }
.kv-list b { font-size: 16.5px; line-height: 1.5; font-weight: 750; }
.kv-list span { color: var(--ink-2); font-size: 14.5px; line-height: 1.65; }
.kv-list time, .kv-list em { font: 500 12px/1.6 var(--mono); color: var(--ink-3); font-style: normal; }
.kv-list-tight a { padding: 12px 14px; }
.kv-list-tight b { font-size: 15.5px; }
.kv-list-tight span { font-size: 14px; }
.kv-tags { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 24px !important; font-size: 13.5px; }
.kv-tags .lab { color: var(--ink-3); font-family: var(--mono); }
.kv-tags a, .kv-tags > span:not(.lab) { border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; color: var(--ink-2); text-decoration: none; line-height: 1.4; }
.kv-tags a { position: relative; border-color: var(--coral-t); color: var(--coral-d); background: var(--coral-s); }
.kv-tags a::after { content: ""; position: absolute; inset: -7px -2px; }
.kv-tags a:hover { border-color: var(--coral); }
.kv-pager { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; margin-top: 16px; font-size: 14.5px; }
.kv-pager a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border: 1.5px solid var(--ink); border-radius: 999px; color: var(--ink); text-decoration: none; font-weight: 600; background: var(--paper); }
.kv-pager a:hover { background: var(--ink); color: #fff; }
.kv-pager a.prev::before { content: "\2190"; margin-right: 6px; }
.kv-pager a.next::after { content: "\2192"; margin-left: 6px; }
.kv-pager > * { justify-self: start; }
.kv-pager .at { justify-self: center; }
.kv-pager .next { justify-self: end; }
.kv-pager .at { font-family: var(--mono); color: var(--ink-3); font-size: 12.5px; text-align: center; }

/* 文章底部「接着看」、首页「手册里新写的」 */
.kv-more { margin-top: 28px; }
.kv-more-h { margin: 0 0 8px !important; font: 700 12.5px/1.6 var(--mono); color: var(--coral-d); letter-spacing: .04em; }
.kv-latest { padding: 0 16px 56px; margin-top: -26px; }
.kv-latest-in { max-width: 1180px; margin: 0 auto; background: var(--paper); border: 1px solid var(--line); border-top: 5px solid var(--ink); border-radius: var(--r); padding: 18px 18px 20px; }
.kv-latest-head { display: grid; gap: 4px; margin-bottom: 12px; }
.kv-latest-head h2 { margin: 0; font-size: 21px; line-height: 1.4; font-weight: 800; }
.kv-latest-head p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
.kv-latest-all { justify-self: start; display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; }

/* 页脚 */
.kv-foot { background: var(--ink); color: #C9CED6; padding: 34px 16px 22px; font-size: 14px; line-height: 1.75; }
.kv-foot-in { max-width: 1180px; margin: 0 auto; display: grid; gap: 22px; }
.kv-foot .kv-logo { color: #F4F5F7; margin-bottom: 8px; }
.kv-foot .kv-logo:hover { color: #fff; }
.kv-foot p { margin: 0 0 10px; }
.kv-foot a { color: #F4F5F7; }
.kv-foot .risk { color: #9AA2AD; font-size: 13px; }
.kv-foot-links { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; }
.kv-foot-links a { display: block; padding: 10px 0; min-height: 44px; text-decoration: none; }
.kv-foot-links a:hover { text-decoration: underline; }
.kv-foot .kv-foot-end { max-width: 1180px; margin: 22px auto 0; padding-top: 14px; border-top: 1px solid #3A414B; font: 500 12.5px/1.6 var(--mono); color: #8A929D; }

/* 宽屏 */
@media (min-width: 760px) {
  body { font-size: 16.5px; }
  .kv-cover { padding: 28px 24px 10px; }
  .kv-doc { max-width: 1228px; padding-left: 24px; padding-right: 24px; }
  .kv-doc.is-solo { max-width: 948px; }
  .kv-latest { padding-left: 24px; padding-right: 24px; }
  .kv-cover-in { padding: 30px 34px 32px; }
  .kv-cover h1 { font-size: 38px; }
  .kv-lead { font-size: 16.5px; max-width: 46em; }
  .kv-pickzone { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); grid-template-areas: "pick card"; gap: 28px; margin-top: 22px; align-items: start; }
  .kv-flow .starts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .kv-prose { padding: 28px 36px 34px; }
  .kv-prose h2 { font-size: 26px; }
  .kv-foot-in { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 40px; }
  .kv-cover-art h1, .kv-cover-page h1 { font-size: 32px; }
  .kv-cover-art .kv-cover-in, .kv-cover-page .kv-cover-in { padding: 22px 34px 26px; }
  .kv-latest-in { padding: 24px 30px 26px; }
  .kv-latest-head { grid-template-columns: minmax(0, 1fr) auto; align-items: end; column-gap: 24px; }
  .kv-latest-head p { grid-column: 1; }
  .kv-latest-all { grid-column: 2; grid-row: 1 / span 2; }
}
@media (min-width: 1100px) {
  .kv-cover h1 { font-size: 44px; }
  .kv-doc { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 32px; align-items: start; padding-top: 18px; }
  .kv-toc { position: sticky; top: 16px; margin: 0; }
  .kv-js .kv-toc-box > summary::after { content: none; }
  .kv-js .kv-toc-box > summary { cursor: default; pointer-events: none; }
  .kv-prose { max-width: none; }
  .kv-doc.is-solo { display: block; max-width: 948px; }
  .kv-doc.is-solo .kv-prose { max-width: none; }
  .kv-cover-art h1, .kv-cover-page h1 { font-size: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  .kv-progress { display: none; }
  html { scroll-behavior: auto; }
}
@media print {
  .kv-progress, .kv-top, .kv-toc, .kv-foot, .kv-pick, .kv-check input { display: none !important; }
  body { background: #fff; }
}