/* =========================================================
   竞猜网址数据 · /assets/site.css
   共享外壳：reset / 变量 / 排版 / 头部 / 页脚 / 基础组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  font-family: var(--kx-font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.72;
  color: var(--kx-ink);
  background-color: var(--kx-void);
  background-image:
    radial-gradient(1100px 560px at 88% -8%, rgba(55, 214, 230, .085), transparent 66%),
    radial-gradient(880px 480px at 2% 4%, rgba(243, 182, 75, .055), transparent 68%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: var(--kx-cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --kx-void: #050A12;
  --kx-hull: #0A1322;
  --kx-panel: #101E33;
  --kx-line: #22344B;
  --kx-cyan: #37D6E6;
  --kx-cyan-deep: #167985;
  --kx-amber: #F3B64B;
  --kx-amber-deep: #8A5B1F;
  --kx-ink: #EAF3FF;
  --kx-mist: #A7BCD4;
  --kx-dim: #748AA2;
  --kx-ok: #49D6A0;

  --kx-font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --kx-font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --kx-font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --kx-max: 1240px;
  --kx-gutter: clamp(16px, 4vw, 40px);
  --kx-ease: cubic-bezier(.2, .7, .3, 1);
  --kx-shell-h: 72px;
}

/* ---------- 3. 焦点与可访问性 ---------- */
:focus-visible {
  outline: 2px solid var(--kx-cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.kx-skip {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 999;
  display: inline-block;
  padding: 11px 20px;
  font-family: var(--kx-font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: #1B1204;
  background: var(--kx-amber);
  border: 1px solid var(--kx-amber-deep);
  text-decoration: none;
  transition: top .22s var(--kx-ease);
}
.kx-skip:focus,
.kx-skip:focus-visible { top: 16px; outline-offset: 2px; }

/* ---------- 4. 排版 ---------- */
.kx-h1 {
  font-family: var(--kx-font-display);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--kx-ink);
}
.kx-h2 {
  font-family: var(--kx-font-display);
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.005em;
  color: var(--kx-ink);
}
.kx-h3 {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--kx-ink);
}
.kx-lede {
  max-width: 64ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.75;
  color: var(--kx-mist);
}
.kx-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--kx-cyan);
}
.kx-eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--kx-cyan), transparent);
}
.kx-num {
  font-family: var(--kx-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

/* ---------- 5. 版面容器 ---------- */
.kx-container {
  width: 100%;
  max-width: var(--kx-max);
  margin-inline: auto;
  padding-inline: var(--kx-gutter);
}
.kx-section { padding-block: clamp(44px, 6.5vw, 96px); }
.kx-section--wide {
  background: linear-gradient(180deg, rgba(16, 30, 51, .55), rgba(10, 19, 34, .92));
  border-block: 1px solid var(--kx-line);
}
.kx-section--tight { padding-block: clamp(28px, 4vw, 52px); }
.kx-prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.72;
  color: var(--kx-mist);
}
.kx-prose > * + * { margin-top: 1.1em; }
.kx-prose strong { color: var(--kx-ink); font-weight: 700; }

/* ---------- 6. 按钮 ---------- */
.kx-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 20px 11px 18px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--kx-ink);
  background: var(--kx-panel);
  border: 1px solid var(--kx-line);
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s var(--kx-ease), border-color .2s var(--kx-ease),
              color .2s var(--kx-ease), transform .2s var(--kx-ease);
}
.kx-btn::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 9px;
  height: 9px;
  background: currentColor;
  opacity: .22;
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}
.kx-btn:hover {
  transform: translateY(-2px);
  border-color: var(--kx-cyan);
  color: var(--kx-cyan);
  background: #12233A;
}
.kx-btn--primary {
  color: #03161C;
  background: var(--kx-cyan);
  border-color: var(--kx-cyan);
}
.kx-btn--primary:hover {
  color: #03161C;
  background: #5AE4F0;
  border-color: #5AE4F0;
}
.kx-btn--ghost {
  color: var(--kx-amber);
  background: transparent;
  border-color: var(--kx-amber-deep);
}
.kx-btn--ghost:hover {
  color: #1B1204;
  background: var(--kx-amber);
  border-color: var(--kx-amber);
}

/* ---------- 7. 标签 / 信号条 / 状态点 ---------- */
.kx-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .07em;
  color: var(--kx-cyan);
  background: rgba(22, 121, 133, .2);
  border: 1px solid rgba(55, 214, 230, .3);
  border-radius: 1px;
  white-space: nowrap;
}
.kx-tag--amber {
  color: var(--kx-amber);
  background: rgba(138, 91, 31, .22);
  border-color: rgba(243, 182, 75, .36);
}
.kx-tag--ok {
  color: var(--kx-ok);
  background: rgba(30, 110, 84, .22);
  border-color: rgba(73, 214, 160, .34);
}

.kx-signal {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 14px 10px 16px;
  font-family: var(--kx-font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--kx-mist);
  background: rgba(243, 182, 75, .065);
  border-left: 3px solid var(--kx-amber);
}
.kx-signal--cyan {
  background: rgba(55, 214, 230, .065);
  border-left-color: var(--kx-cyan);
}

.kx-dot {
  display: inline-block;
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--kx-ok);
  box-shadow: 0 0 0 3px rgba(73, 214, 160, .16);
}
.kx-dot--pulse { animation: kx-pulse 2.6s ease-out infinite; }
.kx-dot--amber { background: var(--kx-amber); box-shadow: 0 0 0 3px rgba(243, 182, 75, .16); }

@keyframes kx-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(73, 214, 160, .45); }
  70%  { box-shadow: 0 0 0 8px rgba(73, 214, 160, 0); }
  100% { box-shadow: 0 0 0 0 rgba(73, 214, 160, 0); }
}

/* ---------- 8. 卡片 ---------- */
.kx-card {
  position: relative;
  padding: clamp(16px, 2vw, 24px);
  background: linear-gradient(180deg, rgba(16, 30, 51, .94), rgba(10, 19, 34, .94));
  border: 1px solid var(--kx-line);
  border-radius: 2px;
  box-shadow: inset 0 1px 0 rgba(234, 243, 255, .045);
  transition: border-color .24s var(--kx-ease), transform .24s var(--kx-ease);
}
.kx-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 14px;
  height: 14px;
  background: linear-gradient(135deg, var(--kx-cyan) 0 50%, transparent 50%);
  opacity: .85;
  pointer-events: none;
}
.kx-card--lift:hover {
  transform: translateY(-2px);
  border-color: rgba(55, 214, 230, .5);
}
.kx-card--amber::before {
  background: linear-gradient(135deg, var(--kx-amber) 0 50%, transparent 50%);
}

/* ---------- 9. 网格 ---------- */
.kx-grid {
  display: grid;
  gap: clamp(14px, 2.2vw, 26px);
}
.kx-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.kx-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kx-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 10. 面包屑 ---------- */
.kx-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--kx-dim);
}
.kx-crumbs a {
  color: var(--kx-mist);
  text-decoration: none;
  transition: color .2s var(--kx-ease);
}
.kx-crumbs a:hover { color: var(--kx-cyan); }
.kx-crumbs__sep { color: var(--kx-line); }
.kx-crumbs [aria-current] { color: var(--kx-amber); }

/* ---------- 11. 图片容器基础规则 ---------- */
.kx-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    linear-gradient(155deg, var(--kx-panel), var(--kx-hull) 70%);
  border: 1px solid var(--kx-line);
  border-radius: 2px;
}
.kx-media > img,
.kx-media > svg,
.kx-media > picture > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.kx-media--wide { aspect-ratio: 21 / 9; }
.kx-media--square { aspect-ratio: 1 / 1; }
.kx-media--tall { aspect-ratio: 4 / 5; }
.kx-media--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(55, 214, 230, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(55, 214, 230, .09) 1px, transparent 1px);
  background-size: 34px 34px;
}
.kx-media__cap {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  padding: 24px 12px 10px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--kx-mist);
  background: linear-gradient(180deg, transparent, rgba(5, 10, 18, .94));
}
.kx-figure { margin: 0; }
.kx-figure > figcaption {
  margin-top: 10px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--kx-dim);
}

/* =========================================================
   12. 头部
   ========================================================= */
.kx-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(5, 10, 18, .88), rgba(5, 10, 18, .38));
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: background .28s var(--kx-ease),
              border-color .28s var(--kx-ease),
              box-shadow .28s var(--kx-ease);
}
.kx-header--solid {
  background: rgba(10, 19, 34, .97);
  border-bottom-color: var(--kx-line);
  box-shadow: 0 14px 34px -22px #000;
}

.kx-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  width: 100%;
  max-width: var(--kx-max);
  min-height: var(--kx-shell-h);
  margin-inline: auto;
  padding-inline: var(--kx-gutter);
}

.kx-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  text-decoration: none;
  color: inherit;
}
.kx-brand__mark {
  font-family: var(--kx-font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.2;
  color: var(--kx-ink);
  white-space: nowrap;
}
.kx-brand__badge {
  display: inline-block;
  padding: 2px 7px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  line-height: 1.5;
  color: var(--kx-amber);
  background: rgba(138, 91, 31, .24);
  border: 1px solid var(--kx-amber-deep);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 5px 100%, 0 calc(100% - 5px));
  white-space: nowrap;
}
.kx-brand__line {
  padding-left: 10px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--kx-dim);
  border-left: 1px solid var(--kx-line);
  white-space: nowrap;
}

.kx-header__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-inline-start: auto;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--kx-dim);
  white-space: nowrap;
}

.kx-nav { flex: none; }
.kx-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.kx-nav__link {
  position: relative;
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--kx-mist);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  border-radius: 2px 2px 0 0;
  white-space: nowrap;
  transition: color .2s var(--kx-ease), background .2s var(--kx-ease),
              border-color .2s var(--kx-ease);
}
.kx-nav__link:hover {
  color: var(--kx-ink);
  background: rgba(55, 214, 230, .075);
}
.kx-nav__link[aria-current="page"] {
  color: var(--kx-cyan);
  border-bottom-color: var(--kx-cyan);
  background: rgba(55, 214, 230, .06);
}

.kx-header__actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  margin-inline-start: 12px;
}
.kx-header__cta { padding: 10px 16px; font-size: 13px; }

.kx-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--kx-ink);
  background: var(--kx-panel);
  border: 1px solid var(--kx-line);
  border-radius: 2px;
  cursor: pointer;
  transition: color .2s var(--kx-ease), border-color .2s var(--kx-ease);
}
.kx-navtoggle:hover { color: var(--kx-cyan); border-color: var(--kx-cyan); }
.kx-navtoggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background .2s var(--kx-ease);
}
.kx-navtoggle__bars::before,
.kx-navtoggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .24s var(--kx-ease), top .24s var(--kx-ease);
}
.kx-navtoggle__bars::before { top: -6px; }
.kx-navtoggle__bars::after { top: 6px; }
.kx-navtoggle[aria-expanded="true"] .kx-navtoggle__bars { background: transparent; }
.kx-navtoggle[aria-expanded="true"] .kx-navtoggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}
.kx-navtoggle[aria-expanded="true"] .kx-navtoggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.kx-scrollbar {
  height: 2px;
  background: rgba(34, 52, 75, .5);
}
.kx-scrollbar__fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--kx-cyan), var(--kx-cyan-deep) 55%, var(--kx-amber));
}

/* =========================================================
   13. 页脚
   ========================================================= */
.kx-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  padding-block: clamp(44px, 6vw, 76px) 26px;
  color: var(--kx-mist);
  font-size: 14px;
  background-color: var(--kx-hull);
  background-image:
    radial-gradient(900px 380px at 10% 0%, rgba(55, 214, 230, .085), transparent 62%),
    radial-gradient(700px 320px at 88% 100%, rgba(243, 182, 75, .06), transparent 66%);
  border-top: 1px solid var(--kx-line);
}
.kx-footer::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--kx-cyan) 0%, var(--kx-cyan-deep) 42%, var(--kx-amber) 100%);
  opacity: .85;
}

.kx-footer__inner {
  width: 100%;
  max-width: var(--kx-max);
  margin-inline: auto;
  padding-inline: var(--kx-gutter);
}

.kx-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: clamp(24px, 3.6vw, 52px);
  align-items: start;
}

.kx-footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.kx-footer__tagline {
  margin-top: 14px;
  font-family: var(--kx-font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .01em;
  color: var(--kx-ink);
}
.kx-footer__summary {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--kx-dim);
}

.kx-footer__title {
  margin-bottom: 14px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--kx-cyan);
}

.kx-footer__list { display: grid; gap: 2px; }
.kx-footer__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--kx-mist);
  text-decoration: none;
  transition: color .2s var(--kx-ease), transform .2s var(--kx-ease);
}
.kx-footer__link::before {
  content: "›";
  display: inline-block;
  width: 14px;
  color: var(--kx-line);
  transition: color .2s var(--kx-ease);
}
.kx-footer__link:hover {
  color: var(--kx-cyan);
  transform: translateX(2px);
}
.kx-footer__link:hover::before { color: var(--kx-cyan); }

.kx-contactlist { display: grid; gap: 10px; }
.kx-contactlist__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(34, 52, 75, .9);
}
.kx-contactlist__row:last-child { border-bottom: 0; padding-bottom: 0; }
.kx-contactlist__k {
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--kx-dim);
}
.kx-contactlist__v {
  margin: 0;
  font-size: 13px;
  line-height: 1.62;
  color: var(--kx-ink);
  word-break: break-word;
}
.kx-footer__note {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 2px solid var(--kx-amber-deep);
  font-family: var(--kx-font-mono);
  font-size: 12px;
  line-height: 1.68;
  color: var(--kx-dim);
}

.kx-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 20px;
  border-top: 1px solid var(--kx-line);
}
.kx-footer__copy {
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--kx-dim);
}
.kx-footer__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.kx-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.5;
  color: var(--kx-mist);
  background: rgba(16, 30, 51, .8);
  border: 1px solid var(--kx-line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 6px 100%, 0 calc(100% - 6px));
  white-space: nowrap;
}

/* ---------- 返回顶部 ---------- */
.kx-top {
  position: fixed;
  right: clamp(12px, 3vw, 28px);
  bottom: clamp(12px, 3vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--kx-cyan);
  background: rgba(16, 30, 51, .96);
  border: 1px solid var(--kx-line);
  border-radius: 2px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .24s var(--kx-ease), transform .24s var(--kx-ease),
              border-color .24s var(--kx-ease), color .24s var(--kx-ease);
}
.kx-top.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.kx-top:hover { color: var(--kx-amber); border-color: var(--kx-amber); }
.kx-top__arrow { font-family: var(--kx-font-mono); font-size: 13px; line-height: 1; }

/* ---------- 14. 显现动效协议 ---------- */
html.kx-js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .5s var(--kx-ease), transform .5s var(--kx-ease);
}
html.kx-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* =========================================================
   15. 响应式
   ========================================================= */
@media (max-width: 1180px) {
  .kx-brand__line { display: none; }
  .kx-header__status { display: none; }
  .kx-header__actions { margin-inline-start: auto; }
}

@media (max-width: 1024px) {
  .kx-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kx-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kx-footer__grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .kx-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --kx-shell-h: 64px; }

  .kx-navtoggle { display: inline-flex; }

  .kx-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    max-height: calc(100dvh - 76px);
    overflow-y: auto;
    background: rgba(10, 19, 34, .988);
    border-block: 1px solid var(--kx-line);
    box-shadow: 0 28px 52px -26px #000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .22s var(--kx-ease), transform .22s var(--kx-ease),
                visibility .22s var(--kx-ease);
  }
  .kx-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .kx-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--kx-gutter) 18px;
  }
  .kx-nav__link {
    padding: 15px 12px;
    font-size: 15px;
    border-bottom: 1px solid rgba(34, 52, 75, .8);
    border-left: 2px solid transparent;
    border-radius: 0;
  }
  .kx-nav__link[aria-current="page"] {
    color: var(--kx-cyan);
    border-bottom-color: rgba(34, 52, 75, .8);
    border-left-color: var(--kx-cyan);
    background: rgba(55, 214, 230, .07);
  }

  .kx-header__cta { padding: 9px 13px; font-size: 12px; }
  .kx-footer__grid { grid-template-columns: 1fr 1fr; }
  .kx-footer__brand { grid-column: 1 / -1; }
  .kx-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 15px; line-height: 1.7; }

  .kx-grid--2,
  .kx-grid--3,
  .kx-grid--4 { grid-template-columns: minmax(0, 1fr); }

  .kx-brand__mark { font-size: 16px; }
  .kx-brand { gap: 8px; }
  .kx-header__inner { gap: 10px; }
  .kx-header__cta { display: none; }
  .kx-navtoggle { padding: 9px 12px; }
  .kx-navtoggle__text { display: none; }

  .kx-footer__grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .kx-footer__meta { flex-direction: column; align-items: flex-start; }
  .kx-contactlist__row { grid-template-columns: 40px minmax(0, 1fr); }

  .kx-top { padding: 9px 12px; font-size: 11px; }
  .kx-media { aspect-ratio: 4 / 3; }
  .kx-media--wide { aspect-ratio: 16 / 9; }
}

/* ---------- 16. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  html.kx-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .kx-dot--pulse { animation: none; }
  .kx-btn:hover,
  .kx-card--lift:hover,
  .kx-footer__link:hover { transform: none; }
}