/* ============================================================
   K8数据台 · 共享样式 /assets/site.css
   精密数据台 + 检测实验室：冷静蓝灰基调，荧光青强调，警示橙点缀
   ============================================================ */

:root {
  --k8-indigo: #0E1B2C;
  --k8-slate: #22344A;
  --k8-ink: #101418;
  --k8-gray: #5A6B7C;
  --k8-mist: #7E93A8;
  --k8-paper: #E3E8EE;
  --k8-white: #F4F7FA;
  --k8-cyan: #2BE3C6;
  --k8-cyan-soft: #DCF5F1;
  --k8-orange: #FF7A45;
  --k8-orange-deep: #3A2116;

  --k8-font-head: 'Archivo Narrow', 'Oswald', 'Arial Narrow', 'Helvetica Neue', system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --k8-font-body: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --k8-font-data: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --k8-space-1: 8px;
  --k8-space-2: 16px;
  --k8-space-3: 24px;
  --k8-space-4: 40px;
  --k8-space-5: 72px;

  --k8-r-sm: 12px;
  --k8-r-md: 18px;
  --k8-r-lg: 24px;
  --k8-r-xl: 28px;
  --k8-r-pill: 999px;

  --k8-shell: 1280px;
  --k8-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
}

body {
  margin: 0;
  background: var(--k8-white);
  color: var(--k8-ink);
  font-family: var(--k8-font-body);
  font-size: 16px;
  line-height: 1.8;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
img, svg, video { max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; }
a { color: inherit; word-break: break-word; }
table { border-collapse: collapse; }

:focus-visible {
  outline: 2px solid var(--k8-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 基础容器与节奏 ---------- */
.k8-shell {
  width: 100%;
  max-width: var(--k8-shell);
  margin-inline: auto;
  padding-inline: 24px;
}

.k8-section { padding-block: var(--k8-space-5); }
.k8-section--tight { padding-block: var(--k8-space-4); }
.k8-section--deep {
  background: var(--k8-indigo);
  color: var(--k8-white);
}
.k8-section--deep .k8-lede,
.k8-section--deep .k8-text { color: var(--k8-mist); }
.k8-section--deep .k8-eyebrow { color: var(--k8-cyan); }

/* ---------- 网格 ---------- */
.k8-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--k8-space-3);
}
.k8-grid > * { grid-column: 1 / -1; }

@media (min-width: 641px) and (max-width: 1024px) {
  .k8-grid > * { grid-column: span 6; }
  .k8-grid > .k8-span-12,
  .k8-grid > .k8-span-9,
  .k8-grid > .k8-span-8,
  .k8-grid > .k8-span-7 { grid-column: 1 / -1; }
}

@media (min-width: 1025px) {
  .k8-span-3 { grid-column: span 3; }
  .k8-span-4 { grid-column: span 4; }
  .k8-span-5 { grid-column: span 5; }
  .k8-span-6 { grid-column: span 6; }
  .k8-span-7 { grid-column: span 7; }
  .k8-span-8 { grid-column: span 8; }
  .k8-span-9 { grid-column: span 9; }
  .k8-span-12 { grid-column: span 12; }
  .k8-offset-2 { margin-left: calc((100% + var(--k8-space-3)) / 12 * 2); }
  .k8-offset-3 { margin-left: calc((100% + var(--k8-space-3)) / 12 * 3); }
}

/* ---------- 文字层级 ---------- */
.k8-eyebrow {
  display: inline-block;
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--k8-gray);
  margin-bottom: var(--k8-space-2);
}

.k8-display {
  font-family: var(--k8-font-head);
  font-weight: 700;
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-bottom: var(--k8-space-3);
}

.k8-h2 {
  font-family: var(--k8-font-head);
  font-weight: 700;
  font-size: clamp(28px, 3.6vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: var(--k8-space-2);
}

.k8-h3 {
  font-family: var(--k8-font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.005em;
  margin-bottom: var(--k8-space-1);
}

.k8-lede {
  font-size: 18px;
  line-height: 1.75;
  color: var(--k8-gray);
  max-width: 62ch;
  margin-bottom: var(--k8-space-3);
}

.k8-text {
  font-size: 17px;
  line-height: 1.8;
  max-width: 68ch;
  margin-bottom: var(--k8-space-2);
}

.k8-data {
  font-family: var(--k8-font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.k8-num {
  font-family: var(--k8-font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.k8-rule {
  height: 1px;
  border: 0;
  background: var(--k8-paper);
  margin-block: var(--k8-space-4);
}

/* ---------- 链接与按钮 ---------- */
.k8-link {
  position: relative;
  display: inline-block;
  color: inherit;
  text-decoration: none;
  padding-bottom: 2px;
}
.k8-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--k8-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms var(--k8-ease);
}
.k8-link:hover::after,
.k8-link:focus-visible::after { transform: scaleX(1); }

.k8-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--k8-r-pill);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 180ms var(--k8-ease),
              color 180ms var(--k8-ease),
              border-color 180ms var(--k8-ease),
              transform 180ms var(--k8-ease);
}
.k8-btn--primary {
  background: var(--k8-cyan);
  color: var(--k8-indigo);
}
.k8-btn--primary:hover {
  background: var(--k8-indigo);
  color: var(--k8-cyan);
  border-color: var(--k8-cyan);
}
.k8-btn--ghost {
  background: transparent;
  border-color: var(--k8-paper);
  color: var(--k8-ink);
}
.k8-btn--ghost:hover {
  border-color: var(--k8-cyan);
  background: var(--k8-cyan-soft);
}

/* ---------- 胶囊标签 ---------- */
.k8-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--k8-r-pill);
  background: var(--k8-paper);
  color: var(--k8-ink);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  transition: background-color 160ms var(--k8-ease), color 160ms var(--k8-ease);
}
.k8-pill--cyan {
  background: var(--k8-cyan-soft);
  color: var(--k8-indigo);
}
.k8-pill--warn {
  background: var(--k8-orange-deep);
  color: var(--k8-orange);
}
.k8-pill--ghost {
  background: transparent;
  border: 1px solid var(--k8-paper);
  color: var(--k8-gray);
}

/* ---------- 卡片 ---------- */
.k8-card {
  border: 1px solid var(--k8-paper);
  border-radius: var(--k8-r-lg);
  background: #FFFFFF;
  padding: var(--k8-space-3);
  transition: border-color 180ms var(--k8-ease), background-color 180ms var(--k8-ease);
}
.k8-card:hover { border-color: var(--k8-cyan); }
.k8-card__title {
  font-family: var(--k8-font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  margin-bottom: var(--k8-space-1);
}
.k8-card__meta {
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--k8-gray);
}
.k8-card--data {
  border-top: 2px solid var(--k8-cyan);
  border-radius: var(--k8-r-md);
}
.k8-card--deep {
  background: var(--k8-slate);
  border-color: rgba(126, 147, 168, 0.28);
  color: var(--k8-white);
}
.k8-card--deep .k8-card__meta { color: var(--k8-mist); }

.k8-band {
  background: var(--k8-slate);
  color: var(--k8-white);
  border-radius: var(--k8-r-xl);
  padding: var(--k8-space-4);
}

/* ---------- 表格 ---------- */
.k8-table {
  width: 100%;
  font-size: 15px;
}
.k8-table th,
.k8-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--k8-paper);
}
.k8-table th {
  font-family: var(--k8-font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--k8-gray);
}
.k8-table tbody tr { transition: background-color 160ms var(--k8-ease); }
.k8-table tbody tr:hover { background: var(--k8-cyan-soft); }

/* ---------- 索引列表 ---------- */
.k8-index {
  list-style: none;
  border-top: 1px solid var(--k8-paper);
}
.k8-index__item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: var(--k8-space-3);
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--k8-paper);
}
.k8-index__num {
  font-family: var(--k8-font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--k8-gray);
}
.k8-index__title {
  font-family: var(--k8-font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
}
.k8-index__meta {
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--k8-gray);
}
@media (max-width: 640px) {
  .k8-index__item { grid-template-columns: 64px minmax(0, 1fr); }
  .k8-index__meta { grid-column: 2 / -1; }
}

/* ---------- 技能树式服务路径 ---------- */
.k8-path { list-style: none; }
.k8-path__step {
  position: relative;
  margin-left: 17px;
  padding: 0 0 32px 36px;
  border-left: 1px solid var(--k8-paper);
}
.k8-path__step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}
.k8-path__step::before {
  content: attr(data-step);
  position: absolute;
  left: -17px;
  top: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--k8-indigo);
  color: var(--k8-cyan);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.k8-path__title {
  font-family: var(--k8-font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  margin: 4px 0 6px;
}
.k8-path__text {
  font-size: 15px;
  color: var(--k8-gray);
}

/* ---------- 折叠面板 ---------- */
.k8-fold {
  border: 1px solid var(--k8-paper);
  border-radius: var(--k8-r-md);
  background: #FFFFFF;
  overflow: hidden;
}
.k8-fold + .k8-fold { margin-top: 12px; }
.k8-fold__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 24px;
  background: transparent;
  border: 0;
  text-align: left;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 160ms var(--k8-ease);
}
.k8-fold__trigger:hover { background: var(--k8-cyan-soft); }
.k8-fold__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}
.k8-fold__sign::before,
.k8-fold__sign::after {
  content: '';
  position: absolute;
  background: currentColor;
  border-radius: 2px;
  transition: transform 180ms var(--k8-ease), opacity 180ms var(--k8-ease);
}
.k8-fold__sign::before { left: 0; top: 7px; width: 16px; height: 2px; }
.k8-fold__sign::after { left: 7px; top: 0; width: 2px; height: 16px; }
.k8-fold__trigger[aria-expanded="true"] .k8-fold__sign::after { transform: scaleY(0); }
.k8-fold__panel {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--k8-gray);
}
.k8-fold__panel[hidden] { display: none; }

/* ---------- 提示块 ---------- */
.k8-note {
  border-left: 2px solid var(--k8-cyan);
  background: var(--k8-cyan-soft);
  color: var(--k8-indigo);
  padding: 16px 20px;
  border-radius: 0 var(--k8-r-md) var(--k8-r-md) 0;
  font-size: 15px;
}
.k8-note--warn {
  border-left-color: var(--k8-orange);
  background: var(--k8-orange-deep);
  color: var(--k8-orange);
}

/* ---------- 面包屑 ---------- */
.k8-breadcrumb {
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--k8-gray);
  margin-bottom: var(--k8-space-3);
}
.k8-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.k8-breadcrumb__list li { display: inline-flex; align-items: center; gap: 8px; }
.k8-breadcrumb__list li + li::before {
  content: '/';
  color: var(--k8-mist);
}
.k8-breadcrumb a { text-decoration: none; color: inherit; }
.k8-breadcrumb a:hover { color: var(--k8-ink); }

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.k8-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--k8-r-lg);
  background: var(--k8-slate);
  border: 1px solid var(--k8-paper);
  aspect-ratio: 16 / 10;
}
.k8-media--wide { aspect-ratio: 16 / 9; }
.k8-media--square { aspect-ratio: 1 / 1; }
.k8-media--tall { aspect-ratio: 4 / 5; }
.k8-media__img,
.k8-media > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.k8-media__cap {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 6px 14px;
  border-radius: var(--k8-r-pill);
  background: rgba(14, 27, 44, 0.72);
  color: var(--k8-white);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.k8-figure { margin: 0; }
.k8-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--k8-gray);
}

/* ============================================================
   头部
   ============================================================ */
.k8-header {
  --k8-head-fg: #F4F7FA;
  --k8-head-dim: #7E93A8;
  --k8-head-line: rgba(126, 147, 168, 0.4);
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(14, 27, 44, 0.74);
  color: var(--k8-head-fg);
  border-bottom: 1px solid rgba(126, 147, 168, 0.24);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  transition: background-color 220ms var(--k8-ease),
              border-color 220ms var(--k8-ease),
              color 220ms var(--k8-ease);
}

.k8-header[data-scrolled="true"] {
  --k8-head-fg: #101418;
  --k8-head-dim: #5A6B7C;
  --k8-head-line: #E3E8EE;
  background: rgba(244, 247, 250, 0.97);
  border-bottom-color: var(--k8-paper);
}

.k8-header__shell {
  width: 100%;
  max-width: var(--k8-shell);
  margin-inline: auto;
  padding-inline: 24px;
}

/* 跳过链接 */
.k8-skip {
  position: absolute;
  left: 24px;
  top: 8px;
  z-index: 5;
  padding: 10px 20px;
  border-radius: var(--k8-r-pill);
  background: var(--k8-cyan);
  color: var(--k8-indigo);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 160ms var(--k8-ease);
}
.k8-skip:focus { transform: translateY(0); }

/* 工具条 */
.k8-utility {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-height: 46px;
  padding-top: 12px;
  overflow: hidden;
  color: var(--k8-head-dim);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  transition: max-height 220ms var(--k8-ease),
              opacity 160ms var(--k8-ease),
              padding-top 220ms var(--k8-ease);
}
.k8-header[data-scrolled="true"] .k8-utility {
  max-height: 0;
  padding-top: 0;
  opacity: 0;
}
.k8-utility__line { margin: 0; white-space: nowrap; }
.k8-utility__links {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.k8-utility__link {
  position: relative;
  color: inherit;
  text-decoration: none;
  padding-bottom: 2px;
  transition: color 160ms var(--k8-ease);
}
.k8-utility__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--k8-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 160ms var(--k8-ease);
}
.k8-utility__link:hover::after,
.k8-utility__link:focus-visible::after { transform: scaleX(1); }
.k8-utility__mail { color: var(--k8-head-fg); }

/* 主栏 */
.k8-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 0 14px;
  transition: padding 220ms var(--k8-ease);
}
.k8-header[data-scrolled="true"] .k8-header__bar { padding: 8px 0 9px; }

/* 品牌 */
.k8-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: inherit;
  text-decoration: none;
  flex: 0 0 auto;
}
.k8-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--k8-cyan);
  color: var(--k8-indigo);
  font-family: var(--k8-font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: width 220ms var(--k8-ease),
              height 220ms var(--k8-ease),
              border-radius 220ms var(--k8-ease),
              font-size 220ms var(--k8-ease);
}
.k8-header[data-scrolled="true"] .k8-brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  font-size: 15px;
}
.k8-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.k8-brand__name {
  font-family: var(--k8-font-head);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  transition: font-size 220ms var(--k8-ease);
}
.k8-header[data-scrolled="true"] .k8-brand__name { font-size: 18px; }
.k8-brand__sub {
  font-family: var(--k8-font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--k8-head-dim);
}

/* 主导航 */
.k8-nav__list {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.k8-nav__item { display: block; }
.k8-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  color: var(--k8-head-fg);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.k8-nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--k8-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms var(--k8-ease);
}
.k8-nav__link:hover::after,
.k8-nav__link:focus-visible::after,
.k8-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.k8-nav__link[aria-current="page"] { font-weight: 600; }

/* 移动端目录按钮 */
.k8-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: var(--k8-r-pill);
  border: 1px solid var(--k8-head-line);
  background: transparent;
  color: var(--k8-head-fg);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background-color 180ms var(--k8-ease),
              border-color 180ms var(--k8-ease),
              color 180ms var(--k8-ease);
}
.k8-nav-toggle:hover {
  border-color: var(--k8-cyan);
  color: var(--k8-cyan);
}
.k8-nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}
.k8-nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 200ms var(--k8-ease), opacity 160ms var(--k8-ease);
}
.k8-nav-toggle[aria-expanded="true"] .k8-nav-toggle__bars i:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}
.k8-nav-toggle[aria-expanded="true"] .k8-nav-toggle__bars i:nth-child(2) {
  opacity: 0;
}
.k8-nav-toggle[aria-expanded="true"] .k8-nav-toggle__bars i:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* 滚动进度 */
.k8-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: var(--k8-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  opacity: 0;
  transition: opacity 200ms var(--k8-ease);
}
.k8-header[data-scrolled="true"] .k8-progress { opacity: 1; }

/* 头部响应式 */
@media (max-width: 980px) {
  .k8-nav-toggle { display: inline-flex; }

  .k8-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--k8-indigo);
    border-bottom: 1px solid rgba(126, 147, 168, 0.24);
    padding: 8px 24px 28px;
    max-height: 72vh;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 180ms var(--k8-ease),
                transform 180ms var(--k8-ease),
                visibility 180ms var(--k8-ease);
  }
  .k8-header[data-open="true"] .k8-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .k8-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .k8-nav__item { border-bottom: 1px solid rgba(126, 147, 168, 0.18); }
  .k8-nav__item:last-child { border-bottom: 0; }
  .k8-nav__link {
    display: block;
    padding: 16px 0;
    font-size: 17px;
    color: var(--k8-white);
  }
  .k8-nav__link::after { bottom: 8px; right: auto; width: 32px; }
}

@media (max-width: 760px) {
  .k8-utility { display: none; }
  .k8-brand__sub { display: none; }
  .k8-header__bar { padding: 10px 0 11px; gap: 12px; }
  .k8-brand__mark { width: 36px; height: 36px; border-radius: 12px; font-size: 16px; }
  .k8-brand__name { font-size: 19px; }
}

/* ============================================================
   页脚
   ============================================================ */
.k8-footer {
  background: var(--k8-indigo);
  color: var(--k8-white);
  padding: var(--k8-space-5) 0 40px;
  font-size: 15px;
  line-height: 1.75;
}
.k8-footer__shell {
  width: 100%;
  max-width: var(--k8-shell);
  margin-inline: auto;
  padding-inline: 24px;
}
.k8-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
  gap: var(--k8-space-5) var(--k8-space-4);
}
.k8-footer__mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--k8-space-2);
  font-family: var(--k8-font-head);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.k8-footer__mark-chip {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: var(--k8-cyan);
  color: var(--k8-indigo);
  font-size: 15px;
  font-weight: 700;
}
.k8-footer__tagline {
  max-width: 36ch;
  margin-bottom: var(--k8-space-3);
  color: var(--k8-white);
  opacity: 0.82;
}
.k8-footer__update {
  border-left: 2px solid var(--k8-cyan);
  padding-left: 12px;
  color: var(--k8-mist);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.8;
}
.k8-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 24px;
}
.k8-footer__col-title {
  margin-bottom: var(--k8-space-2);
  color: var(--k8-mist);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.k8-footer__list {
  display: grid;
  gap: 10px;
  list-style: none;
}
.k8-footer__list a {
  color: var(--k8-white);
  text-decoration: none;
  opacity: 0.78;
  transition: opacity 160ms var(--k8-ease), color 160ms var(--k8-ease);
}
.k8-footer__list a:hover,
.k8-footer__list a:focus-visible {
  opacity: 1;
  color: var(--k8-cyan);
}
.k8-footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin-top: var(--k8-space-5);
  padding-top: var(--k8-space-4);
  border-top: 1px solid rgba(126, 147, 168, 0.24);
}
.k8-footer__contact-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.k8-footer__contact-key {
  color: var(--k8-mist);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.k8-footer__contact-val { color: var(--k8-white); }
.k8-footer__note {
  max-width: 62ch;
  margin-top: var(--k8-space-2);
  color: var(--k8-mist);
  font-size: 13px;
  line-height: 1.75;
}
.k8-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
  margin-top: var(--k8-space-4);
  padding-top: var(--k8-space-3);
  border-top: 1px solid rgba(126, 147, 168, 0.24);
}
.k8-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  list-style: none;
}
.k8-footer__legal a {
  color: var(--k8-mist);
  font-size: 13px;
  text-decoration: none;
  transition: color 160ms var(--k8-ease);
}
.k8-footer__legal a:hover,
.k8-footer__legal a:focus-visible { color: var(--k8-cyan); }
.k8-footer__meta {
  color: var(--k8-mist);
  font-family: var(--k8-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.k8-footer__icp { color: var(--k8-mist); }

@media (max-width: 980px) {
  .k8-footer__top { grid-template-columns: minmax(0, 1fr); gap: var(--k8-space-4); }
  .k8-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .k8-footer { padding-top: var(--k8-space-4); }
  .k8-footer__contact { gap: 10px 24px; }
  .k8-footer__contact-item { flex-direction: column; gap: 2px; }
  .k8-footer__base { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0ms !important;
  }
}