/* ==========================================================================
   K体育赛场 · 共享样式表  /assets/site.css
   深墨蓝蓝图底 · 荧光青主强调 · 赛道橙次强调 · 红黄牌语义色
   ========================================================================== */

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

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

body,
h1, h2, h3, h4,
p, figure, ul, ol, dl {
  margin: 0;
}

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

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

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

a { color: inherit; }

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

/* ---------- 2. 设计变量 ---------- */
:root {
  --ink: #0B1B2B;
  --ink-2: #12283D;
  --ink-3: #0E2135;
  --line: #1E3A52;
  --cyan: #2BE3D2;
  --orange: #FF7A29;
  --red: #E0313A;
  --yellow: #FFC531;
  --paper: #F4F1E8;
  --text: #E8EEF3;
  --muted: #9FB6C6;

  --radius: 4px;
  --shell: 1280px;
  --gutter: 24px;
  --header-h: 78px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system,
    "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace,
    SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 页面基底与中文排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(30, 58, 82, .45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 82, .45) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.22;
  color: var(--paper);
}

h1 { font-size: clamp(32px, 4.4vw, 56px); }
h2 { font-size: clamp(22px, 2.6vw, 30px); }
h3 { font-size: 19px; }
h4 { font-size: 16px; }

p { max-width: 40em; }

strong { color: var(--paper); font-weight: 700; }

em { font-style: italic; color: var(--muted); }

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

[id] { scroll-margin-top: calc(var(--header-h) + 28px); }

#main-content { outline: none; }

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

/* ---------- 4. 跳转链接 ---------- */
.kt-skip {
  position: absolute;
  top: -70px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 2px;
  text-decoration: none;
  transition: top .2s var(--ease);
}

.kt-skip:focus {
  top: 12px;
}

/* ---------- 5. 页头 ---------- */
.kt-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(11, 27, 43, .94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.kt-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 5px;
  background-image: repeating-linear-gradient(
    to right,
    rgba(30, 58, 82, .95) 0 1px,
    transparent 1px 24px
  );
  pointer-events: none;
}

.kt-header__rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--shell);
  height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--gutter);
  transition: height .26s var(--ease);
}

.kt-header[data-scrolled] .kt-header__rail { height: 58px; }

.kt-header__lead {
  display: flex;
  align-items: center;
  gap: 28px;
  min-width: 0;
}

.kt-header__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

.kt-header__icp {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .02em;
  color: rgba(159, 182, 198, .58);
  white-space: nowrap;
}

/* 品牌 */
.kt-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
}

.kt-brand__mark {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--paper);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: 2px;
  white-space: nowrap;
}

.kt-brand__mark i {
  font-style: normal;
  color: var(--cyan);
  padding: 0 1px;
}

.kt-brand__tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: italic;
  letter-spacing: .03em;
  color: var(--muted);
  white-space: nowrap;
}

/* 主导航（桌面） */
.kt-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.kt-nav__list a {
  position: relative;
  display: inline-block;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border-radius: 2px;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.kt-nav__list a:hover {
  color: var(--paper);
  background: rgba(43, 227, 210, .07);
}

.kt-nav__list a[aria-current="page"] { color: var(--cyan); }

.kt-nav__list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 3px;
  height: 2px;
  background: var(--cyan);
}

/* 页头右端短入口 */
.kt-utility {
  display: flex;
  align-items: center;
  gap: 6px;
}

.kt-utility__link {
  display: inline-block;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease),
    background-color .18s var(--ease);
}

.kt-utility__link:hover {
  color: var(--paper);
  border-color: var(--orange);
  background: rgba(255, 122, 41, .09);
}

/* 汉堡按钮 */
.kt-burger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 40px;
  background: rgba(18, 40, 61, .75);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color .18s var(--ease);
}

.kt-burger:hover { border-color: var(--cyan); }

.kt-burger__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  transition: transform .22s var(--ease), opacity .18s var(--ease);
}

.kt-burger[aria-expanded="true"] .kt-burger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.kt-burger[aria-expanded="true"] .kt-burger__bar:nth-child(2) {
  opacity: 0;
}

.kt-burger[aria-expanded="true"] .kt-burger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 面包屑槽位 */
.kt-crumb {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  border-top: 1px dashed rgba(30, 58, 82, .9);
}

.kt-crumb:empty {
  display: none;
  border: 0;
}

.kt-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.kt-crumb__list li + li::before {
  content: "/";
  color: var(--line);
  margin-right: 8px;
}

.kt-crumb__list li[aria-current="page"] {
  color: var(--cyan);
}

.kt-crumb__link {
  color: var(--muted);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.kt-crumb__link:hover { color: var(--cyan); }

/* ---------- 6. 页脚 ---------- */
.kt-footer {
  position: relative;
  margin-top: 96px;
  background: linear-gradient(
    180deg,
    rgba(18, 40, 61, .6) 0%,
    rgba(11, 27, 43, .96) 62%
  );
  border-top: 1px solid var(--line);
}

.kt-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  right: 0;
  width: min(38%, 420px);
  height: 5px;
  background: var(--orange);
  transform: skewX(-18deg);
  transform-origin: right center;
}

.kt-footer__rail {
  max-width: var(--shell);
  margin-inline: auto;
  padding: 56px var(--gutter) 28px;
}

.kt-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.kt-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.kt-footer__blurb {
  max-width: 26em;
  font-size: 13.5px;
  font-style: italic;
  line-height: 1.65;
  color: var(--muted);
}

.kt-footer__stamp {
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--cyan);
  border: 1px dashed rgba(43, 227, 210, .45);
  border-radius: 2px;
}

.kt-footer__col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.kt-footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--muted);
}

.kt-footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.kt-footer__link {
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.kt-footer__link:hover {
  color: var(--cyan);
  border-bottom-color: rgba(43, 227, 210, .5);
}

.kt-footer__contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.kt-footer__line {
  max-width: none;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
  word-break: break-word;
}

.kt-footer__note {
  max-width: none;
  font-size: 12px;
  font-style: italic;
  color: var(--muted);
}

.kt-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .02em;
  color: rgba(159, 182, 198, .72);
}

/* ---------- 7. 正文容器与蓝图网格 ---------- */
.kt-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.kt-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.kt-span-4 { grid-column: span 4; }
.kt-span-5 { grid-column: span 5; }
.kt-span-6 { grid-column: span 6; }
.kt-span-7 { grid-column: span 7; }
.kt-span-8 { grid-column: span 8; }
.kt-span-12 { grid-column: span 12; }

/* ---------- 8. 章节与分隔 ---------- */
.kt-section {
  position: relative;
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.kt-section:first-child { border-top: 0; }

.kt-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: 28px;
}

.kt-section__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.kt-section__title { font-size: clamp(22px, 2.6vw, 30px); }

.kt-section__note {
  margin-left: auto;
  font-size: 12.5px;
  font-style: italic;
  color: var(--muted);
}

.kt-rule {
  position: relative;
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--line);
}

.kt-rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  width: 56px;
  height: 5px;
  background: var(--cyan);
}

.kt-note {
  font-size: 12.5px;
  font-style: italic;
  color: var(--muted);
}

/* ---------- 9. 卡片与记分牌 ---------- */
.kt-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.kt-card:hover { border-color: rgba(43, 227, 210, .5); }

.kt-card__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.kt-card__title { font-size: 19px; }

.kt-card__body {
  font-size: 14px;
  line-height: 1.62;
  color: var(--muted);
}

.kt-card__foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed rgba(30, 58, 82, .95);
  font-size: 12px;
  font-style: italic;
  color: var(--muted);
}

.kt-card--paper {
  background: var(--paper);
  border-color: #d9d3c3;
}

.kt-card--paper .kt-card__title { color: #151d25; }
.kt-card--paper .kt-card__index { color: #6c6350; }
.kt-card--paper .kt-card__body { color: #474741; }
.kt-card--paper .kt-card__foot {
  border-top-color: rgba(0, 0, 0, .16);
  color: #6c6350;
}

.kt-card--score { align-items: flex-start; }

.kt-score {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.kt-score__sep {
  font-size: .6em;
  color: var(--orange);
}

.kt-score__unit {
  align-self: flex-end;
  padding-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
}

/* ---------- 10. 语义标签 ---------- */
.kt-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--muted);
  background: rgba(18, 40, 61, .75);
  border: 1px solid var(--line);
  border-radius: 2px;
  white-space: nowrap;
}

.kt-tag--cyan {
  color: var(--cyan);
  border-color: rgba(43, 227, 210, .5);
  background: rgba(43, 227, 210, .1);
}

.kt-tag--orange {
  color: var(--orange);
  border-color: rgba(255, 122, 41, .5);
  background: rgba(255, 122, 41, .1);
}

.kt-tag--red {
  color: var(--red);
  border-color: rgba(224, 49, 58, .55);
  background: rgba(224, 49, 58, .13);
}

.kt-tag--yellow {
  color: var(--yellow);
  border-color: rgba(255, 197, 49, .55);
  background: rgba(255, 197, 49, .13);
}

/* ---------- 11. 按钮 ---------- */
.kt-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
    border-color .18s var(--ease);
}

.kt-btn--cyan {
  background: var(--cyan);
  color: #04201f;
}

.kt-btn--cyan:hover { background: #67f0e3; }

.kt-btn--orange {
  background: var(--orange);
  color: #2b1204;
}

.kt-btn--orange:hover { background: #ff9654; }

.kt-btn--ghost {
  color: var(--text);
  background: transparent;
  border-color: var(--line);
}

.kt-btn--ghost:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.kt-btn--sm {
  padding: 8px 14px;
  font-size: 13px;
}

/* ---------- 12. 图片容器基础规则 ---------- */
.kt-media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: var(--media-ratio, 16 / 9);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.kt-media img,
.kt-media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}

.kt-media:hover img,
.kt-media:hover .kt-media__img { transform: scale(1.03); }

.kt-media__stamp {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink);
  background: var(--paper);
  border-radius: 2px;
}

.kt-media--wide { --media-ratio: 21 / 9; }
.kt-media--portrait { --media-ratio: 4 / 5; }

/* ---------- 13. 数据表 ---------- */
.kt-table {
  font-size: 13.5px;
}

.kt-table caption {
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  text-align: left;
}

.kt-table th,
.kt-table td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.kt-table th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--muted);
  white-space: nowrap;
}

.kt-table tbody tr:hover td { background: rgba(43, 227, 210, .05); }

.kt-table__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 14. 章节目录（跟随高亮） ---------- */
.kt-catalog {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.kt-catalog__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}

.kt-catalog__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.kt-catalog__link {
  position: relative;
  display: block;
  padding: 6px 0 6px 16px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.kt-catalog__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.kt-catalog__link:hover { color: var(--text); }

.kt-catalog__link[aria-current="true"] { color: var(--cyan); }

.kt-catalog__link[aria-current="true"]::before {
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 15. 入场显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 16. 返回顶部（JS 注入） ---------- */
.kt-totop {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s var(--ease), transform .25s var(--ease),
    visibility .25s var(--ease), border-color .2s var(--ease);
}

.kt-totop[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.kt-totop:hover { border-color: var(--cyan); }

.kt-totop__arc,
.kt-totop__arrow { grid-area: 1 / 1; }

.kt-totop__arc {
  width: 46px;
  height: 46px;
  transform: rotate(-90deg);
}

.kt-totop__track {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
}

.kt-totop__bar {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 125.664;
  stroke-dashoffset: 125.664;
}

.kt-totop__arrow {
  font-size: 15px;
  line-height: 1;
  color: var(--cyan);
}

/* ---------- 17. 断点 ---------- */
@media (max-width: 1080px) {
  :root { --header-h: 64px; }

  .kt-brand__tagline,
  .kt-utility,
  .kt-header__icp { display: none; }

  .kt-burger { display: flex; }

  .kt-header__lead { gap: 16px; }

  .kt-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 95;
    width: min(86vw, 320px);
    height: 100%;
    overflow-y: auto;
    padding: 88px 22px 28px;
    background: var(--ink-2);
    border-left: 1px solid var(--line);
    box-shadow: -18px 0 42px rgba(0, 0, 0, .48);
    visibility: hidden;
    transform: translateX(102%);
    transition: transform .28s var(--ease), visibility .28s var(--ease);
  }

  .kt-nav::before {
    content: "K / 赛场 · 栏目";
    position: absolute;
    top: 28px;
    left: 22px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .18em;
    color: rgba(159, 182, 198, .6);
  }

  .kt-nav[data-open] {
    visibility: visible;
    transform: translateX(0);
  }

  .kt-nav__list { display: block; }

  .kt-nav__list li + li {
    border-top: 1px dashed rgba(30, 58, 82, .95);
  }

  .kt-nav__list a {
    display: block;
    padding: 15px 4px;
    font-size: 16px;
  }

  .kt-nav__list a[aria-current="page"]::after {
    left: 4px;
    right: auto;
    bottom: 12px;
    width: 20px;
  }
}

@media (max-width: 960px) {
  .kt-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .kt-footer__brand { grid-column: 1 / -1; }

  .kt-grid { grid-template-columns: repeat(6, 1fr); }

  .kt-span-4,
  .kt-span-5,
  .kt-span-6,
  .kt-span-7,
  .kt-span-8 { grid-column: span 6; }
}

@media (max-width: 640px) {
  :root { --gutter: 18px; }

  .kt-section { padding: 52px 0; }

  .kt-section__note {
    flex-basis: 100%;
    margin-left: 0;
  }

  .kt-footer { margin-top: 64px; }

  .kt-footer__rail { padding-top: 40px; }

  .kt-footer__grid { grid-template-columns: 1fr; }

  .kt-footer__legal { flex-direction: column; }

  .kt-totop {
    right: 14px;
    bottom: 16px;
  }

  .kt-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .kt-span-4,
  .kt-span-5,
  .kt-span-6,
  .kt-span-7,
  .kt-span-8,
  .kt-span-12 { grid-column: span 1; }
}

/* ---------- 18. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .kt-media:hover img,
  .kt-media:hover .kt-media__img { transform: none; }
}