:root {
  --color-surface: #f7f7f6;
  --color-surface-alt: #eeeeed;
  --color-surface-deep: #e2e2e0;
  --color-ink: #4c453e;
  --color-ink-soft: #746c62;
  --color-ink-muted: #898076;
  --color-line: #d8d7d5;
  --color-primary: #90714b;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e9e4de;
  --color-accent: #313cce;
  --color-accent-ink: #ffffff;
  --color-highlight: #d3d5ef;
  --color-focus: #2431db;
  --color-contrast-surface: #201c18;
  --color-contrast-ink: #e7e6e4;
  --color-contrast-line: #4c4845;
  --color-contrast-accent: #777edf;
  --overlay-scrim: linear-gradient(180deg, rgba(32, 28, 24, 0.35) 0%, rgba(32, 28, 24, 0.72) 55%, rgba(32, 28, 24, 0.92) 100%);
  --font-heading: "Songti SC", "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 11.4px;
  --text-sm: 13.7px;
  --text-base: 15px;
  --text-lg: 18.0px;
  --text-xl: 21.6px;
  --text-2xl: 25.9px;
  --text-3xl: 31.1px;
  --text-4xl: 37.3px;
  --text-display: clamp(34px, 5.1vw, 65px);
  --text-figure: clamp(28px, 3.7vw, 47px);
  --weight-heading: 647;
  --weight-body: 400;
  --leading-body: 1.75;
  --leading-heading: 1.26;
  --tracking-heading: -0.009em;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-pill: 0px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 1px 0 rgba(76, 69, 62, 0.12);
  --shadow-2: 0 2px 0 rgba(76, 69, 62, 0.18);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1180px;
  --measure: 70ch;
  --gutter: 24px;
  --section-y: 66px;
  --section-y-lg: 92px;
}

/* ==========================================================================
   云开体育 · 档案索引柜 · 共享样式表 /assets/site.css
   纸面层 + 夜场深色层 · 0 圆角 · 点线分隔 · 分类色标
   ========================================================================== */

/* --- reset ------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol, hr {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

img, svg, video { display: block; max-width: 100%; }

table { border-collapse: collapse; width: 100%; }

th { text-align: left; font-weight: inherit; }

[hidden] { display: none !important; }

/* --- 中文排版基底 ------------------------------------------------------- */
body {
  min-height: 100vh;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-weight: var(--weight-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection {
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.sk-skip {
  position: absolute;
  left: var(--space-2);
  top: -140px;
  z-index: 300;
  display: inline-block;
  padding: 10px var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  border: var(--border-thin) solid var(--color-contrast-line);
  transition: top 0.16s ease;
}

.sk-skip:focus {
  top: var(--space-2);
}

/* --- 布局容器与区块 ----------------------------------------------------- */
.sk-container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sk-section { padding-block: var(--section-y); }
.sk-section--lg { padding-block: var(--section-y-lg); }
.sk-section--alt { background-color: var(--color-surface-alt); }
.sk-section--deep { background-color: var(--color-surface-deep); }

.sk-section--dark {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.sk-section--dark a { color: var(--color-contrast-accent); }

.sk-rule {
  height: 0;
  border: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.sk-rule--dot {
  height: 0;
  border: 0;
  border-top: var(--border-thin) dotted var(--color-line);
}

.sk-section--dark .sk-rule { border-top-color: var(--color-contrast-line); }
.sk-section--dark .sk-rule--dot { border-top-color: var(--color-contrast-line); }

/* --- 12 列栅格 ---------------------------------------------------------- */
.sk-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.sk-col-3 { grid-column: span 3; }
.sk-col-4 { grid-column: span 4; }
.sk-col-5 { grid-column: span 5; }
.sk-col-6 { grid-column: span 6; }
.sk-col-7 { grid-column: span 7; }
.sk-col-8 { grid-column: span 8; }
.sk-col-9 { grid-column: span 9; }
.sk-col-12 { grid-column: span 12; }

/* --- 文字层级 ----------------------------------------------------------- */
.sk-display {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.sk-readout {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.sk-h1, .sk-h2, .sk-h3, .sk-h4 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  text-wrap: balance;
}

.sk-h1 { font-size: var(--text-3xl); }
.sk-h2 { font-size: var(--text-2xl); }
.sk-h3 { font-size: var(--text-xl); }
.sk-h4 { font-size: var(--text-lg); }

.sk-lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.sk-section--dark .sk-lede { color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent); }

.sk-prose {
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.sk-prose p + p { margin-top: var(--space-2); }
.sk-prose h2, .sk-prose h3 { margin-top: var(--space-4); margin-bottom: var(--space-1); }

.sk-stack > * + * { margin-top: var(--space-2); }
.sk-stack-lg > * + * { margin-top: var(--space-3); }

.sk-mono { font-family: var(--font-mono); letter-spacing: 0.04em; }

.sk-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.sk-muted { color: var(--color-ink-muted); }
.sk-soft { color: var(--color-ink-soft); }
.sk-accent-text { color: var(--color-accent); }

/* --- 区块抬头 ----------------------------------------------------------- */
.sk-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-1) var(--space-3);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-ink);
  margin-bottom: var(--space-3);
}

.sk-head__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.sk-head__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.sk-section--dark .sk-head { border-bottom-color: var(--color-contrast-line); }
.sk-section--dark .sk-head__meta { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }

/* --- 页头 --------------------------------------------------------------- */
.sk-header {
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.sk-masthead {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding-block: var(--space-3) var(--space-2);
  text-align: center;
}

.sk-masthead__brand {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-1) var(--space-2);
}

.sk-masthead__name {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.sk-masthead__product {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
  border-left: var(--border-thin) solid var(--color-line);
  padding-left: var(--space-2);
}

.sk-masthead__brand:hover .sk-masthead__name { color: var(--color-accent); }
.sk-masthead__brand:hover .sk-masthead__product { color: var(--color-accent); }

.sk-masthead__status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.sk-masthead__badge {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  padding: 1px 8px;
  letter-spacing: 0.14em;
}

.sk-masthead__sep {
  display: inline-block;
  width: 3px;
  height: 3px;
  background-color: var(--color-ink-muted);
  vertical-align: middle;
}

/* --- 主导航 ------------------------------------------------------------- */
.sk-nav__toggle {
  position: absolute;
  right: 0;
  top: var(--space-3);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-soft);
  transition: color 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.sk-nav__toggle:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.sk-nav__toggle[aria-expanded="true"] {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--color-primary-soft);
}

.sk-nav__toggle-bars {
  width: 14px;
  height: 9px;
  background-image:
    linear-gradient(var(--color-ink-soft) 0 0),
    linear-gradient(var(--color-ink-soft) 0 0),
    linear-gradient(var(--color-ink-soft) 0 0);
  background-size: 100% 1px;
  background-position: 0 0, 0 4px, 0 8px;
  background-repeat: no-repeat;
}

.sk-nav__toggle[aria-expanded="true"] .sk-nav__toggle-bars {
  background-image:
    linear-gradient(var(--color-accent) 0 0),
    linear-gradient(var(--color-accent) 0 0),
    linear-gradient(var(--color-accent) 0 0);
}

.sk-nav {
  display: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.sk-nav[data-open] { display: block; }

.sk-nav__list {
  display: flex;
  flex-direction: column;
}

.sk-nav__list > li + li { border-top: var(--border-thin) dotted var(--color-line); }

.sk-nav__link {
  display: block;
  padding: var(--space-2) var(--space-1);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  border-left: 3px solid transparent;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.sk-nav__link:hover {
  color: var(--color-accent);
  background-color: var(--color-surface-alt);
  border-left-color: var(--color-primary);
}

.sk-nav__link[aria-current="page"] {
  color: var(--color-accent);
  background-color: var(--color-primary-soft);
  border-left-color: var(--color-accent);
}

/* --- 索引坐标条 --------------------------------------------------------- */
.sk-coord {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.sk-coord__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding-block: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.sk-coord__title {
  color: var(--color-contrast-accent);
  letter-spacing: 0.2em;
  padding-right: var(--space-2);
  border-right: var(--border-thin) solid var(--color-contrast-line);
}

.sk-coord__cell {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.sk-coord__k { color: color-mix(in srgb, var(--color-contrast-ink) 52%, transparent); }
.sk-coord__v { color: var(--color-contrast-ink); font-variant-numeric: tabular-nums; }

/* --- 滚动进度与返回顶部 ------------------------------------------------- */
.sk-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 200;
  pointer-events: none;
  will-change: transform;
}

.sk-totop {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 120;
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.16s ease, visibility 0.16s ease, background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.sk-totop[data-visible] {
  opacity: 1;
  visibility: visible;
}

.sk-totop:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

/* --- 按钮与筛选块 ------------------------------------------------------- */
.sk-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 10px var(--space-3);
  background-color: var(--color-surface);
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  line-height: 1.4;
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.sk-btn:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.sk-btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.sk-btn--primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.sk-btn--ghost {
  background-color: transparent;
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}

.sk-btn--ghost:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.sk-section--dark .sk-btn {
  background-color: transparent;
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.sk-section--dark .sk-btn:hover {
  background-color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.sk-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  background-color: var(--color-surface);
  color: var(--color-ink-soft);
  border: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.sk-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.sk-chip[aria-pressed="true"] {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

/* --- 面包屑 ------------------------------------------------------------- */
.sk-breadcrumb {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  padding-block: var(--space-2);
}

.sk-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.sk-breadcrumb__list li { display: flex; align-items: center; }

.sk-breadcrumb__list li + li::before {
  content: "/";
  margin-inline: var(--space-1);
  color: var(--color-line);
}

.sk-breadcrumb__list a:hover { color: var(--color-accent); }

/* --- 分类标签 ----------------------------------------------------------- */
.sk-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px;
  background-color: var(--color-surface-deep);
  color: var(--color-ink-soft);
  border: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.sk-tag--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.sk-tag--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.sk-tag--soft {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary-soft);
  color: var(--color-primary);
}

.sk-section--dark .sk-tag {
  background-color: transparent;
  border-color: var(--color-contrast-line);
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.sk-section--dark .sk-tag--accent {
  background-color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

/* --- 条目行 ------------------------------------------------------------- */
.sk-list {
  border-top: var(--border-thin) solid var(--color-ink);
}

.sk-entry {
  position: relative;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: var(--space-1) var(--space-3);
  align-items: baseline;
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  border-bottom: var(--border-thin) dotted var(--color-line);
  border-left: 3px solid var(--color-primary);
  transition: background-color 0.16s ease, border-left-color 0.16s ease;
}

.sk-entry:hover {
  background-color: var(--color-surface-alt);
  border-left-color: var(--color-accent);
}

.sk-entry--accent { border-left-color: var(--color-accent); }
.sk-entry--muted { border-left-color: var(--color-ink-muted); }

.sk-entry__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.sk-entry:hover .sk-entry__no { color: var(--color-accent); }

.sk-entry__body {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.sk-entry__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.42;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.sk-entry__desc {
  max-width: 56ch;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.sk-entry__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 5px;
}

.sk-entry__metrics {
  display: flex;
  gap: var(--space-3);
  text-align: right;
}

.sk-metric { display: grid; gap: 3px; }

.sk-metric__k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.sk-metric__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-accent);
}

.sk-metric--primary .sk-metric__v { color: var(--color-ink); }

.sk-section--dark .sk-list { border-top-color: var(--color-contrast-line); }

.sk-section--dark .sk-entry {
  border-bottom-color: var(--color-contrast-line);
  border-left-color: var(--color-contrast-accent);
}

.sk-section--dark .sk-entry:hover {
  background-color: color-mix(in srgb, var(--color-contrast-ink) 7%, transparent);
}

.sk-section--dark .sk-entry__no { color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent); }
.sk-section--dark .sk-entry__title { color: var(--color-contrast-ink); }
.sk-section--dark .sk-entry__desc { color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent); }
.sk-section--dark .sk-metric__k { color: color-mix(in srgb, var(--color-contrast-ink) 55%, transparent); }
.sk-section--dark .sk-metric__v { color: var(--color-contrast-accent); }

/* --- 索引表 ------------------------------------------------------------- */
.sk-tablewrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.sk-index {
  width: 100%;
  min-width: 640px;
  font-size: var(--text-sm);
  border-top: var(--border-thin) solid var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.sk-index thead th {
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.sk-index td {
  padding: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
  vertical-align: baseline;
  line-height: 1.6;
}

.sk-index tbody tr:nth-child(even) { background-color: var(--color-surface-alt); }
.sk-index tbody tr:hover { background-color: var(--color-highlight); }

.sk-index .sk-num { text-align: right; }
.sk-index__no { width: 64px; }

.sk-section--dark .sk-index {
  border-top-color: var(--color-contrast-line);
  border-bottom-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.sk-section--dark .sk-index thead th {
  background-color: transparent;
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-line);
}

.sk-section--dark .sk-index td { border-bottom-color: var(--color-contrast-line); }

.sk-section--dark .sk-index tbody tr:nth-child(even) {
  background-color: color-mix(in srgb, var(--color-contrast-ink) 5%, transparent);
}

.sk-section--dark .sk-index tbody tr:hover {
  background-color: color-mix(in srgb, var(--color-contrast-accent) 20%, transparent);
}

/* --- 翻页索引 ----------------------------------------------------------- */
.sk-pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.sk-pager__item {
  min-width: 40px;
  padding: 7px 10px;
  margin-right: -1px;
  text-align: center;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.sk-pager__item:hover {
  position: relative;
  z-index: 1;
  background-color: var(--color-surface-alt);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.sk-pager__item[aria-current="page"] {
  position: relative;
  z-index: 1;
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.sk-pager__meta {
  margin-left: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* --- 可展开内容组 ------------------------------------------------------- */
.sk-fold { border-top: var(--border-thin) dotted var(--color-line); }

.sk-fold__btn {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
  transition: color 0.16s ease;
}

.sk-fold__btn:hover { color: var(--color-accent); }

.sk-fold__mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  transition: transform 0.16s ease, color 0.16s ease;
}

.sk-fold__btn[aria-expanded="true"] .sk-fold__mark {
  transform: rotate(90deg);
  color: var(--color-accent);
}

.sk-fold__panel {
  display: none;
  padding-bottom: var(--space-3);
}

.sk-fold__btn[aria-expanded="true"] + .sk-fold__panel { display: block; }

/* --- 图片容器（展签式） ------------------------------------------------- */
.sk-figure {
  position: relative;
  margin: 0;
  background-color: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-line);
  overflow: hidden;
}

.sk-figure__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--color-contrast-surface);
  overflow: hidden;
}

.sk-figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.06);
}

.sk-figure__media[data-overlay]::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.sk-figure__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  max-width: min(100%, 46ch);
  padding: 6px var(--space-2);
  background-color: var(--color-surface);
  color: var(--color-ink);
  border-top: var(--border-thin) solid var(--color-line);
  border-right: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  letter-spacing: 0.04em;
}

.sk-figure--wide .sk-figure__media { aspect-ratio: 21 / 9; }
.sk-figure--square .sk-figure__media { aspect-ratio: 1 / 1; }

/* --- 页脚 --------------------------------------------------------------- */
.sk-footer {
  background-color: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
}

.sk-footer__inner {
  padding-block: var(--space-8) var(--space-4);
}

.sk-footer__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-ink);
  margin-bottom: var(--space-6);
}

.sk-footer__brand {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
}

.sk-footer__product {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.sk-footer__status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.sk-footer__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.5fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
}

.sk-footer__title {
  padding-bottom: var(--space-1);
  margin-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.2em;
  color: var(--color-ink-muted);
}

.sk-footer__list li + li { margin-top: 7px; }

.sk-footer__link {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.sk-footer__link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.sk-footer__contact {
  display: grid;
  gap: 7px;
  justify-items: start;
  margin-top: var(--space-3);
}

.sk-copy {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-bottom: 1px;
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.sk-copy::after {
  content: "复制";
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.sk-copy[data-copied]::after {
  content: "已复制";
  color: var(--color-accent);
}

.sk-copy:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.sk-footer__address {
  margin-top: var(--space-2);
  max-width: 34ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.sk-footer__note {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.sk-footer__col .sk-footer__note { margin-top: var(--space-2); max-width: 30ch; }

.sk-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.sk-footer__icp {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}

.sk-footer__legal .sk-footer__note { font-size: var(--text-xs); }

/* --- 响应式 ------------------------------------------------------------- */
@media (max-width: 1024px) {
  .sk-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .sk-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .sk-col-3,
  .sk-col-4,
  .sk-col-5,
  .sk-col-6,
  .sk-col-7,
  .sk-col-8,
  .sk-col-9 { grid-column: span 6; }

  .sk-footer__head { margin-bottom: var(--space-4); }
  .sk-footer__status { margin-left: 0; }
}

@media (min-width: 861px) {
  .sk-nav { display: block; }

  .sk-nav__list {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
  }

  .sk-nav__list > li + li {
    border-top: 0;
    border-left: var(--border-thin) dotted var(--color-line);
  }

  .sk-nav__link {
    padding: 9px var(--space-3);
    border-left: 0;
    border-bottom: 2px solid transparent;
  }

  .sk-nav__link:hover {
    border-left: 0;
    border-bottom-color: var(--color-primary);
  }

  .sk-nav__link[aria-current="page"] {
    border-left: 0;
    border-bottom-color: var(--color-accent);
  }
}

@media (max-width: 620px) {
  .sk-masthead__name { font-size: var(--text-2xl); }

  .sk-masthead__product {
    border-left: 0;
    padding-left: 0;
    width: 100%;
  }

  .sk-masthead__status { letter-spacing: 0.06em; }

  .sk-entry {
    grid-template-columns: 46px minmax(0, 1fr);
    padding-left: var(--space-2);
  }

  .sk-entry__metrics {
    grid-column: 2;
    justify-content: flex-start;
    text-align: left;
    margin-top: 6px;
    gap: var(--space-2);
  }

  .sk-footer__grid { grid-template-columns: 1fr; gap: var(--space-3); }

  .sk-footer__legal { flex-direction: column; align-items: flex-start; gap: 6px; }

  .sk-totop { right: var(--space-2); bottom: var(--space-2); }
}

@media (max-width: 560px) {
  .sk-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .sk-col-3,
  .sk-col-4,
  .sk-col-5,
  .sk-col-6,
  .sk-col-7,
  .sk-col-8,
  .sk-col-9,
  .sk-col-12 { grid-column: span 2; }

  .sk-coord__inner { gap: 6px var(--space-2); }
  .sk-coord__title { border-right: 0; padding-right: 0; width: 100%; }
}

/* --- 减少动效 ----------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .sk-progress { transition: none; }
  .sk-totop { transition: none; }
}