/* ============================================================
   云开体育主站 · 共享样式 /assets/site.css
   夜赛电子屏：深靛蓝底 + 精密网格 + 橙/绿点状荧光
   ============================================================ */

/* ---------- 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 { margin: 0; }

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

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

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

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

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

:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; }

/* ---------- 变量 ---------- */
:root {
  --ink-900: #0A1122;
  --ink-800: #101A33;
  --ink-700: #1A2745;
  --line: #24304D;
  --text-hi: #E8EDF7;
  --text-mid: #98A5C0;
  --orange: #FF7A2F;
  --pitch: #2BE08A;
  --score-red: #FF3B4E;
  --electric: #4FD1FF;
  --violet: #7A5CFF;
  --day-bg: #F4F6FB;
  --day-card: #FFFFFF;
  --day-text: #111827;

  --bg: var(--ink-900);
  --surface: var(--ink-800);
  --surface-2: var(--ink-700);
  --edge: var(--line);
  --fg: var(--text-hi);
  --fg-mid: var(--text-mid);
  --fg-dim: #7A87A6;
  --grid-line: rgba(36, 48, 77, 0.42);
  --header-bg: rgba(16, 26, 51, 0.94);

  --font-heading: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --gutter: clamp(16px, 4vw, 40px);
  --gap: clamp(12px, 1.5vw, 22px);
  --radius: 2px;
}

:root[data-theme="light"] {
  --bg: var(--day-bg);
  --surface: var(--day-card);
  --surface-2: #E9EDF7;
  --edge: #D3DAEA;
  --fg: var(--day-text);
  --fg-mid: #4B5568;
  --fg-dim: #6B7688;
  --grid-line: rgba(17, 24, 39, 0.07);
  --header-bg: rgba(255, 255, 255, 0.94);
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p { max-width: 68ch; }

/* ---------- 跳过链接 ---------- */
.ky-skip {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--orange);
  color: #0A1122;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform 0.16s ease;
}

.ky-skip:focus { transform: none; }

/* ---------- 顶部比分条 ---------- */
.ky-topbar {
  position: relative;
  overflow: hidden;
  background: var(--surface-2);
  border-bottom: 1px solid var(--edge);
}

.ky-topbar__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg-mid);
}

.ky-topbar__label {
  flex: none;
  padding: 3px 6px;
  background: var(--pitch);
  color: #06121F;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.ky-topbar__text {
  flex: 1 1 auto;
  min-width: 0;
  max-width: none;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.ky-scan {
  position: absolute;
  top: 0;
  left: -24%;
  width: 22%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(79, 209, 255, 0.3), transparent);
  animation: ky-sweep 2s cubic-bezier(0.2, 0.8, 0.2, 1) 0.4s 1 both;
}

@keyframes ky-sweep {
  0% { transform: translateX(0); opacity: 0; }
  15% { opacity: 1; }
  100% { transform: translateX(620%); opacity: 0; }
}

/* ---------- 命令栏头部 ---------- */
.ky-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--edge);
}

.ky-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
  height: 64px;
  transition: height 0.18s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ky-header[data-condensed] .ky-header__inner { height: 44px; }

/* 品牌 */
.ky-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
  min-width: 0;
}

.ky-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  background: var(--orange);
  color: #0A1122;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: width 0.18s ease, height 0.18s ease;
}

.ky-header[data-condensed] .ky-brand__mark { width: 28px; height: 28px; }

.ky-brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.ky-brand__name {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.ky-brand__line {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--fg-mid);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ky-header[data-condensed] .ky-brand__line { display: none; }

/* 导航 */
.ky-nav {
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.ky-nav::-webkit-scrollbar { display: none; }

.ky-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.ky-nav__item { flex: none; }

.ky-nav__link {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  color: var(--fg-mid);
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color 0.12s ease, background-color 0.12s ease, border-color 0.12s ease, transform 0.12s ease;
}

.ky-nav__link:hover {
  background: var(--surface-2);
  border-color: var(--edge);
  color: var(--fg);
}

.ky-nav__link:active { transform: translateY(1px); }

.ky-nav__link[aria-current="page"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #0A1122;
}

.ky-nav__link[aria-current="page"] .ky-nav__idx {
  color: #0A1122;
  opacity: 0.6;
}

.ky-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--fg-dim);
}

/* 右侧动作区 */
.ky-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
  margin-left: auto;
}

.ky-copy {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px dashed var(--edge);
  border-radius: var(--radius);
  color: var(--fg-mid);
  font-size: 12px;
  line-height: 1;
  transition: border-color 0.12s ease, color 0.12s ease;
}

.ky-copy:hover { border-color: var(--electric); color: var(--fg); }

.ky-copy__label { font-weight: 600; }

.ky-copy__hint {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
}

.ky-copy[data-state="done"] { border-color: var(--pitch); color: var(--pitch); }
.ky-copy[data-state="done"] .ky-copy__hint { color: var(--pitch); }
.ky-copy[data-state="fail"] { border-color: var(--score-red); color: var(--score-red); }
.ky-copy[data-state="fail"] .ky-copy__hint { color: var(--score-red); }

.ky-theme {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  color: var(--fg-mid);
  font-size: 12px;
  line-height: 1;
  transition: border-color 0.12s ease, color 0.12s ease;
}

.ky-theme:hover { border-color: var(--fg-mid); color: var(--fg); }

.ky-theme__icon {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 50%;
  background: var(--electric);
  box-shadow: 0 0 0 3px rgba(79, 209, 255, 0.16);
}

:root[data-theme="light"] .ky-theme__icon {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 47, 0.16);
}

.ky-nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  color: var(--fg);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  transition: border-color 0.12s ease, color 0.12s ease;
}

.ky-nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 10px;
  flex: none;
}

.ky-nav-toggle__bars::before,
.ky-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.16s ease;
}

.ky-nav-toggle__bars::before { top: 0; }
.ky-nav-toggle__bars::after { bottom: 0; }

.ky-header[data-open] .ky-nav-toggle { border-color: var(--orange); color: var(--orange); }
.ky-header[data-open] .ky-nav-toggle__bars::before { transform: translateY(4.25px) rotate(45deg); }
.ky-header[data-open] .ky-nav-toggle__bars::after { transform: translateY(-4.25px) rotate(-45deg); }

/* 滚动进度 */
.ky-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--electric), var(--pitch));
  transition: transform 0.1s linear;
}

/* ---------- 布局骨架 ---------- */
.ky-wrap {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.ky-main { display: block; min-height: 60vh; }

.ky-section { padding-block: clamp(32px, 5vw, 64px); }

.ky-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  margin-bottom: var(--gap);
}

.ky-section__title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.ky-section__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-mid);
}

.ky-rule {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--edge);
}

/* ---------- 面包屑 ---------- */
.ky-breadcrumb {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
}

.ky-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.ky-breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ky-breadcrumb__item:not(:last-child)::after {
  content: "/";
  color: var(--line);
}

.ky-breadcrumb a { color: var(--fg-mid); }
.ky-breadcrumb a:hover { color: var(--orange); }

/* ---------- Bento 栅格 ---------- */
.ky-bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
  align-items: start;
}

.ky-span-12 { grid-column: span 12; }
.ky-span-9 { grid-column: span 9; }
.ky-span-8 { grid-column: span 8; }
.ky-span-6 { grid-column: span 6; }
.ky-span-4 { grid-column: span 4; }
.ky-span-3 { grid-column: span 3; }

/* ---------- Bento 面板 ---------- */
.ky-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: clamp(14px, 1.6vw, 22px);
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
}

.ky-panel--focus { border-color: var(--orange); }

.ky-panel--focus::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background: var(--orange);
}

.ky-panel--tilt {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.ky-panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.ky-panel__idx {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
}

.ky-panel__title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.28;
}

.ky-panel__note {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fg-mid);
}

/* ---------- 数值 / 标签 ---------- */
.ky-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ky-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}

.ky-stat__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--fg-mid);
}

.ky-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--fg-mid);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
}

.ky-tag--pitch { color: var(--pitch); border-color: var(--pitch); }
.ky-tag--red { color: var(--score-red); border-color: var(--score-red); }
.ky-tag--electric { color: var(--electric); border-color: var(--electric); }
.ky-tag--orange { color: var(--orange); border-color: var(--orange); }
.ky-tag--violet { color: var(--violet); border-color: var(--violet); }

/* ---------- 时间榜 ---------- */
.ky-ledger {
  display: grid;
  border-top: 1px solid var(--edge);
}

.ky-ledger__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--edge);
  font-size: 13.5px;
}

.ky-ledger__time {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--electric);
}

.ky-ledger__text {
  min-width: 0;
  color: var(--fg-mid);
}

.ky-ledger__state {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--pitch);
}

/* ---------- 对比矩阵 ---------- */
.ky-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  border: 1px solid var(--edge);
}

.ky-matrix th {
  padding: 8px 10px;
  text-align: left;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--electric);
  background: var(--surface-2);
  border-bottom: 1px solid var(--edge);
}

.ky-matrix td {
  padding: 9px 10px;
  color: var(--fg-mid);
  border-bottom: 1px solid var(--edge);
}

.ky-matrix tbody tr:nth-child(even) { background: var(--surface-2); }

.ky-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--fg);
}

/* ---------- 入口卡片 ---------- */
.ky-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: clamp(14px, 1.6vw, 20px);
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.ky-card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.ky-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.ky-card__title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.ky-card__text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-mid);
}

/* ---------- 按钮 ---------- */
.ky-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease, transform 0.12s ease;
}

.ky-btn:active { transform: translateY(1px); }

.ky-btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #0A1122;
}

.ky-btn--primary:hover { background: #FF9257; border-color: #FF9257; }

.ky-btn--ghost {
  background: transparent;
  color: var(--fg-mid);
}

.ky-btn--ghost:hover {
  border-color: var(--electric);
  color: var(--fg);
}

/* ---------- 原生折叠 ---------- */
.ky-details {
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  padding: 0 14px;
}

.ky-details summary {
  padding: 12px 0;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  list-style: none;
}

.ky-details summary::-webkit-details-marker { display: none; }

.ky-details summary::before {
  content: "＋";
  display: inline-block;
  width: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.ky-details[open] summary::before { content: "－"; }

.ky-details > * + * {
  padding-bottom: 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--fg-mid);
}

/* ---------- 图片容器（供页面阶段放置占位） ---------- */
.ky-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--surface-2);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
}

.ky-media--wide { aspect-ratio: 21 / 9; }
.ky-media--tall { aspect-ratio: 3 / 4; }
.ky-media--square { aspect-ratio: 1 / 1; }

.ky-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.95) contrast(1.05);
}

.ky-media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(79, 209, 255, 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(79, 209, 255, 0.14) 1px, transparent 1px);
  background-size: 48px 48px;
}

.ky-media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  color: #E8EDF7;
  background: linear-gradient(180deg, transparent, rgba(10, 17, 34, 0.9));
}

/* ---------- 竖排注释 / 小工具 ---------- */
.ky-annot {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
}

.ky-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--electric);
}

.ky-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
}

.ky-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 滚动显现 ---------- */
.ky-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.28s cubic-bezier(0.2, 0.8, 0.2, 1),
              transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ky-reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 页脚 ---------- */
.ky-footer {
  --fg: #E8EDF7;
  --fg-mid: #98A5C0;
  --fg-dim: #7482A0;
  --edge: #24304D;
  --surface: #101A33;
  --surface-2: #1A2745;
  position: relative;
  overflow: hidden;
  margin-top: clamp(48px, 7vw, 96px);
  background: #0A1122;
  color: var(--fg);
  border-top: 1px solid #24304D;
}

.ky-footer__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(79, 209, 255, 0.05) 0 1px,
    transparent 1px 5px
  );
}

.ky-footer__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(36px, 5vw, 60px) 24px;
}

.ky-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 16px 32px;
  justify-content: space-between;
}

.ky-brand--footer .ky-brand__mark { width: 40px; height: 40px; font-size: 13px; }
.ky-brand--footer .ky-brand__name { font-size: 17px; }

.ky-footer__claim {
  flex: 1 1 300px;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fg-mid);
}

.ky-footer__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ky-chip {
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  color: var(--fg-mid);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
}

.ky-footer__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--edge);
}

.ky-footer__col { min-width: 0; }

.ky-footer__title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--electric);
  border-bottom: 1px solid var(--edge);
}

.ky-footer__list {
  display: grid;
  gap: 8px;
  font-size: 13.5px;
}

.ky-footer__link {
  color: var(--fg-mid);
  border-bottom: 1px solid transparent;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.ky-footer__link:hover {
  color: var(--fg);
  border-bottom-color: var(--orange);
}

.ky-footer__item {
  font-size: 13px;
  line-height: 1.75;
  color: var(--fg-mid);
}

.ky-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--edge);
  font-size: 12px;
  color: var(--fg-dim);
}

.ky-footer__legal-line { max-width: none; }

.ky-footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  max-width: none;
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 900px) {
  .ky-span-9,
  .ky-span-8,
  .ky-span-6 { grid-column: span 12; }

  .ky-span-4,
  .ky-span-3 { grid-column: span 6; }

  .ky-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 响应式：移动导航 ---------- */
@media (max-width: 860px) {
  .ky-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: 72vh;
    overflow-y: auto;
    padding: 8px var(--gutter) 16px;
    background: var(--surface);
    border-top: 1px solid var(--edge);
    border-bottom: 1px solid var(--edge);
    box-shadow: 0 24px 48px rgba(6, 10, 22, 0.5);
  }

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

  .ky-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .ky-nav__link {
    padding: 13px 8px;
    font-size: 15px;
    border-bottom: 1px solid var(--edge);
    border-radius: 0;
  }

  .ky-nav-toggle { display: inline-flex; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 700px) {
  .ky-actions__cta { display: none; }
  .ky-copy { display: none; }
  .ky-theme__text { display: none; }
  .ky-brand__line { display: none; }
  .ky-topbar__inner { font-size: 10px; gap: 8px; }
  .ky-header__inner { height: 56px; }
  .ky-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .ky-ledger__row { grid-template-columns: auto minmax(0, 1fr); }
  .ky-ledger__state { grid-column: 2; justify-self: start; }
}

@media (max-width: 600px) {
  .ky-span-4,
  .ky-span-3 { grid-column: span 12; }
  .ky-panel--tilt { clip-path: none; }
}

/* ---------- 桌面端错位叠层 ---------- */
@media (min-width: 901px) {
  .ky-panel--off { transform: translate(8px, -8px); }
}

/* ---------- 动效偏好 ---------- */
@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;
  }

  .ky-reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .ky-scan { display: none; }
  .ky-panel--off { transform: none; }
  .ky-card:hover { transform: none; }
}