/* =========================================================
   360体育看台 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, dl, dd, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
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%; }
input, select, textarea { font: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --kt-ink: #05100D;
  --kt-green: #0A231D;
  --kt-line: #1C3B33;
  --kt-cyan: #19E3C8;
  --kt-mist: #9CF3E6;
  --kt-flame: #FF4B1F;
  --kt-amber: #FFB43A;
  --kt-paper: #F4F8F5;
  --kt-stone: #C6D3CE;
  --kt-deep: #0E6B5E;

  --kt-display: 'Barlow Condensed', 'Oswald', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --kt-serif: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
  --kt-body: 'PingFang SC', 'Noto Sans SC', 'Hiragino Sans GB', system-ui, sans-serif;
  --kt-mono: ui-monospace, 'SFMono-Regular', 'JetBrains Mono', 'Roboto Mono', monospace;

  --kt-shell: 1280px;
  --kt-gutter: clamp(28px, 6vw, 96px);
  --kt-radius: 2px;
  --kt-shadow: -8px 8px 0 rgba(0, 0, 0, .38);
  --kt-ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- 3. Base / 中文排版 ---------- */
body {
  background: var(--kt-ink);
  color: var(--kt-paper);
  font-family: var(--kt-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  position: relative;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 60% at 10% -12%, rgba(25, 227, 200, .12), transparent 62%),
    radial-gradient(90% 50% at 100% 0%, rgba(255, 75, 31, .08), transparent 66%);
}
.kt-shell {
  width: min(var(--kt-shell), 100% - var(--kt-gutter));
  margin-inline: auto;
}
.kt-main { position: relative; z-index: 1; }

:focus-visible {
  outline: 2px solid var(--kt-cyan);
  outline-offset: 3px;
  border-radius: var(--kt-radius);
}
.kt-visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* ---------- 4. Skip link ---------- */
.kt-skip {
  position: fixed;
  left: 16px;
  top: -72px;
  z-index: 120;
  padding: 10px 18px;
  background: var(--kt-cyan);
  color: var(--kt-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  border-radius: var(--kt-radius);
  transition: top .2s var(--kt-ease);
}
.kt-skip:focus { top: 12px; }

/* ---------- 5. Header ---------- */
.kt-header {
  position: sticky;
  top: 0;
  z-index: 60;
}
.kt-header__bar {
  position: relative;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .28s var(--kt-ease), border-color .28s var(--kt-ease);
}
.kt-header__bar::after {
  content: "";
  display: block;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--kt-line) 0 1px, transparent 1px 14px);
  background-repeat: repeat-x;
  background-position: 0 50%;
  opacity: .75;
}
.kt-header[data-scrolled="true"] .kt-header__bar {
  background: rgba(6, 20, 16, .94);
  border-bottom-color: var(--kt-line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.kt-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(14px, 2vw, 32px);
  min-height: 70px;
}
.kt-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

/* 状态带 */
.kt-statusbar {
  background: linear-gradient(90deg, var(--kt-green), #081914 55%, var(--kt-green));
  border-top: 2px solid var(--kt-cyan);
  border-bottom: 1px solid var(--kt-line);
  color: var(--kt-mist);
  font-size: 12px;
  letter-spacing: .08em;
}
.kt-statusbar__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 3vw, 32px);
  min-height: 34px;
  white-space: nowrap;
  overflow: hidden;
}
.kt-statusbar__chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: none;
}
.kt-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--kt-cyan);
  box-shadow: 0 0 10px rgba(25, 227, 200, .85);
  animation: kt-pulse 2.6s ease-in-out infinite;
}
@keyframes kt-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
.kt-statusbar__score {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  flex: none;
}
.kt-statusbar__team {
  font-size: 11px;
  color: var(--kt-stone);
  letter-spacing: .14em;
}
.kt-statusbar__num {
  font-size: 18px;
  font-weight: 700;
  color: var(--kt-cyan);
}
.kt-num--away { color: var(--kt-flame); }
.kt-statusbar__sep { color: var(--kt-stone); }
.kt-statusbar__meta {
  margin-left: auto;
  color: var(--kt-stone);
  flex: none;
}
.kt-num {
  font-family: var(--kt-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

/* 品牌 */
.kt-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.kt-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--kt-cyan);
  border-radius: var(--kt-radius);
  font-family: var(--kt-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--kt-cyan);
  background: rgba(25, 227, 200, .07);
  transition: background .2s var(--kt-ease), border-color .2s var(--kt-ease), color .2s var(--kt-ease);
}
.kt-brand:hover .kt-brand__mark {
  background: var(--kt-cyan);
  color: var(--kt-ink);
  border-color: var(--kt-cyan);
}
.kt-brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.kt-brand__name {
  font-family: var(--kt-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .04em;
}
.kt-brand__tagline {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--kt-mist);
}

/* 导航 */
.kt-nav { display: flex; align-items: center; }
.kt-nav__head,
.kt-nav__foot { display: none; }
.kt-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.kt-nav__link {
  position: relative;
  display: block;
  padding: 10px 13px;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--kt-stone);
  border-radius: var(--kt-radius);
  transition: color .2s var(--kt-ease), background .2s var(--kt-ease);
}
.kt-nav__link::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 4px;
  height: 2px;
  background: var(--kt-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .24s var(--kt-ease);
}
.kt-nav__link:hover { color: var(--kt-paper); }
.kt-nav__link:hover::after { transform: scaleX(1); }
.kt-nav__link[aria-current="page"] {
  color: var(--kt-cyan);
  background: rgba(25, 227, 200, .08);
}
.kt-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 菜单按钮 */
.kt-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  color: var(--kt-mist);
  font-size: 12px;
  letter-spacing: .12em;
}
.kt-navtoggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}
.kt-navtoggle__bars > span {
  display: block;
  height: 2px;
  background: var(--kt-cyan);
  transition: transform .24s var(--kt-ease), opacity .24s var(--kt-ease);
}
.kt-navtoggle[aria-expanded="true"] .kt-navtoggle__bars > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.kt-navtoggle[aria-expanded="true"] .kt-navtoggle__bars > span:nth-child(2) { opacity: 0; }
.kt-navtoggle[aria-expanded="true"] .kt-navtoggle__bars > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 6. 按钮 ---------- */
.kt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 13px;
  letter-spacing: .12em;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  background: var(--kt-green);
  color: var(--kt-paper);
  transition: background .2s var(--kt-ease), color .2s var(--kt-ease), border-color .2s var(--kt-ease), transform .2s var(--kt-ease);
}
.kt-btn:hover { border-color: var(--kt-cyan); transform: translateY(-1px); }
.kt-btn--primary {
  background: var(--kt-cyan);
  border-color: var(--kt-cyan);
  color: var(--kt-ink);
  font-weight: 700;
}
.kt-btn--primary:hover { background: var(--kt-mist); border-color: var(--kt-mist); }
.kt-btn--ghost {
  background: transparent;
  border-color: rgba(25, 227, 200, .5);
  color: var(--kt-cyan);
}
.kt-btn--ghost:hover { background: rgba(25, 227, 200, .1); border-color: var(--kt-cyan); }
.kt-btn--block { width: 100%; }

/* ---------- 7. 页脚 ---------- */
.kt-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  background: var(--kt-green);
  border-top: 1px solid var(--kt-line);
}
.kt-footer__tape {
  height: 12px;
  background-color: rgba(5, 16, 13, .7);
  background-image:
    repeating-linear-gradient(90deg, var(--kt-cyan) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, var(--kt-line) 0 1px, transparent 1px 8px);
  background-size: 100% 100%, 100% 42%;
  background-position: 0 100%, 0 100%;
  background-repeat: repeat-x, repeat-x;
  opacity: .8;
}
.kt-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
  gap: clamp(20px, 3vw, 48px);
  padding: clamp(38px, 5vw, 68px) 0 clamp(28px, 4vw, 44px);
}
.kt-footer__brandcol { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.kt-footer__brand {
  font-family: var(--kt-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 800;
  letter-spacing: .04em;
  line-height: 1.1;
}
.kt-footer__brand:hover { color: var(--kt-cyan); }
.kt-footer__version {
  display: inline-block;
  padding: 3px 9px;
  background: var(--kt-amber);
  color: var(--kt-ink);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  border-radius: var(--kt-radius);
}
.kt-footer__desc {
  font-size: 14px;
  color: var(--kt-stone);
  max-width: 34ch;
}
.kt-footer__cta { margin-top: 4px; }
.kt-footer__col { display: flex; flex-direction: column; gap: 12px; }
.kt-footer__title {
  font-family: var(--kt-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--kt-cyan);
  padding-left: 10px;
  border-left: 3px solid var(--kt-flame);
}
.kt-footer__list { display: grid; gap: 8px; }
.kt-footer__link {
  position: relative;
  display: inline-block;
  padding-left: 14px;
  font-size: 14px;
  color: var(--kt-stone);
  transition: color .2s var(--kt-ease), padding-left .2s var(--kt-ease);
}
.kt-footer__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--kt-line);
  transition: background .2s var(--kt-ease), width .2s var(--kt-ease);
}
.kt-footer__link:hover { color: var(--kt-paper); padding-left: 18px; }
.kt-footer__link:hover::before { background: var(--kt-cyan); width: 12px; }
.kt-footer__contactrow {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 13px;
  color: var(--kt-stone);
  line-height: 1.6;
  word-break: break-word;
}
.kt-footer__contactrow .kt-num { color: var(--kt-mist); font-size: 13px; }
.kt-label {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--kt-deep);
  filter: brightness(2.4);
}
.kt-footer__note {
  margin-top: 6px;
  padding: 10px 12px;
  border-left: 2px dashed var(--kt-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--kt-stone);
}
.kt-footer__bottom { border-top: 1px dashed var(--kt-line); }
.kt-footer__bottominner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 0 22px;
}
.kt-footer__legal,
.kt-footer__copy {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--kt-stone);
}
.kt-top {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 13px;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  color: var(--kt-mist);
  font-size: 12px;
  letter-spacing: .12em;
  transition: border-color .2s var(--kt-ease), color .2s var(--kt-ease);
}
.kt-top:hover { border-color: var(--kt-cyan); color: var(--kt-cyan); }
.kt-top__track {
  position: relative;
  display: block;
  width: 76px;
  height: 7px;
  background: var(--kt-ink);
  border: 1px solid var(--kt-line);
  overflow: hidden;
}
.kt-top__fill {
  position: absolute;
  inset: 0;
  display: block;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--kt-cyan), var(--kt-flame));
}

/* ---------- 8. 通用排版组件 ---------- */
.kt-section { padding: clamp(48px, 7vw, 96px) 0; }
.kt-section--tight { padding: clamp(26px, 4vw, 48px) 0; }
.kt-section--paper {
  background: var(--kt-paper);
  color: #16241F;
}
.kt-section--paper .kt-title,
.kt-section--paper .kt-h2,
.kt-section--paper .kt-h3 { color: var(--kt-ink); }
.kt-section--paper .kt-lede { color: #2C4A42; }
.kt-section--paper .kt-text { color: #37544C; }
.kt-section--paper .kt-label { color: #55736B; }
.kt-section--paper .kt-kicker { color: var(--kt-deep); }
.kt-section--paper .kt-card {
  background: #FFFFFF;
  border-color: #CFDCD7;
  color: #16241F;
}
.kt-section--paper .kt-card::before { border-color: #B9C9C3; }
.kt-section--paper .kt-card__text { color: #3C5A52; }

.kt-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--kt-cyan);
  margin-bottom: 12px;
}
.kt-kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--kt-cyan);
}
.kt-title {
  font-family: var(--kt-display);
  font-weight: 800;
  font-size: clamp(30px, 5vw, 64px);
  line-height: 1.04;
  letter-spacing: -.01em;
}
.kt-h2 {
  font-family: var(--kt-serif);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.28;
  padding-left: 14px;
  border-left: 3px solid var(--kt-flame);
}
.kt-h3 {
  font-family: var(--kt-serif);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
}
.kt-lede {
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.7;
  color: var(--kt-mist);
  max-width: 62ch;
}
.kt-text { font-size: 16px; color: var(--kt-stone); max-width: 64ch; }

/* ---------- 9. 布局组件 ---------- */
.kt-grid { display: grid; gap: clamp(16px, 2.4vw, 32px); }
.kt-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.kt-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kt-grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }

.kt-card {
  position: relative;
  background: var(--kt-green);
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  padding: clamp(18px, 2.2vw, 28px);
  box-shadow: var(--kt-shadow);
}
.kt-card::before {
  content: "";
  position: absolute;
  inset: 0;
  transform: translate(-10px, 10px);
  border: 1px dashed var(--kt-line);
  border-radius: var(--kt-radius);
  z-index: -1;
  pointer-events: none;
}
.kt-card__kicker {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--kt-amber);
  margin-bottom: 8px;
}
.kt-card__title {
  font-family: var(--kt-serif);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
}
.kt-card__text { font-size: 14px; color: var(--kt-stone); }

.kt-stat { display: flex; flex-direction: column; gap: 4px; }
.kt-stat__value {
  font-family: var(--kt-display);
  font-size: clamp(34px, 5vw, 64px);
  font-weight: 800;
  line-height: 1;
  color: var(--kt-cyan);
  text-shadow: 0 0 20px rgba(25, 227, 200, .28);
}
.kt-stat__label {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--kt-stone);
}

.kt-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--kt-mist);
  border: 1px solid var(--kt-line);
  border-radius: 99px;
}
.kt-chip--flame { background: var(--kt-flame); border-color: var(--kt-flame); color: #FFFFFF; }
.kt-chip--amber { background: var(--kt-amber); border-color: var(--kt-amber); color: var(--kt-ink); }

/* ---------- 10. 面包屑 / 刻度 / 图片容器 / 目录 ---------- */
.kt-crumb { padding-top: 18px; }
.kt-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--kt-stone);
}
.kt-crumb__item { display: inline-flex; align-items: center; gap: 8px; }
.kt-crumb__link { color: var(--kt-mist); border-bottom: 1px solid transparent; }
.kt-crumb__link:hover { color: var(--kt-cyan); border-bottom-color: var(--kt-cyan); }
.kt-crumb__sep { color: var(--kt-line); }
.kt-crumb__item[aria-current="page"] { color: var(--kt-paper); }

.kt-rule {
  height: 1px;
  border: 0;
  background: var(--kt-line);
}
.kt-rule--ticks {
  height: 10px;
  border: 0;
  background-color: transparent;
  background-image:
    repeating-linear-gradient(90deg, var(--kt-line) 0 1px, transparent 1px 20px),
    repeating-linear-gradient(90deg, var(--kt-cyan) 0 1px, transparent 1px 100px);
  background-size: 100% 45%, 100% 100%;
  background-position: 0 100%, 0 100%;
  background-repeat: repeat-x, repeat-x;
}

.kt-figure { margin: 0; position: relative; }
.kt-figure__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--kt-line);
  border-radius: var(--kt-radius);
  background:
    repeating-linear-gradient(90deg, rgba(28, 59, 51, .8) 0 1px, transparent 1px 48px),
    linear-gradient(135deg, #0A231D 0%, #05100D 70%);
}
.kt-figure--wide .kt-figure__frame { aspect-ratio: 21 / 9; }
.kt-figure--square .kt-figure__frame { aspect-ratio: 1 / 1; }
.kt-figure--tall .kt-figure__frame { aspect-ratio: 3 / 4; }
.kt-figure__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--kt-cyan) 0 1px, transparent 1px 14px);
  opacity: .5;
  pointer-events: none;
}
.kt-figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.06) contrast(1.04);
}
.kt-figure__caption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--kt-amber);
  font-size: 13px;
  color: var(--kt-stone);
}

.kt-toc { position: sticky; top: 130px; }
.kt-toc__list {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--kt-line);
}
.kt-toc__link {
  display: block;
  margin-left: -1px;
  padding: 7px 12px;
  font-size: 13px;
  color: var(--kt-stone);
  border-left: 2px solid transparent;
  transition: color .2s var(--kt-ease), border-color .2s var(--kt-ease), background .2s var(--kt-ease);
}
.kt-toc__link:hover { color: var(--kt-paper); }
.kt-toc__link[aria-current="true"] {
  color: var(--kt-cyan);
  border-left-color: var(--kt-flame);
  background: rgba(25, 227, 200, .07);
}

/* 继续走 */
.kt-next {
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: 18px;
  border-top: 1px solid var(--kt-line);
}
.kt-next__list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.kt-next__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--kt-mist);
  border: 1px dashed var(--kt-line);
  border-radius: var(--kt-radius);
  transition: color .2s var(--kt-ease), border-color .2s var(--kt-ease), background .2s var(--kt-ease);
}
.kt-next__link:hover {
  color: var(--kt-ink);
  background: var(--kt-cyan);
  border-color: var(--kt-cyan);
}

/* ---------- 11. 显现动效 ---------- */
html.kt-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}
html.kt-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity .52s var(--kt-ease), transform .52s var(--kt-ease);
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1180px) {
  .kt-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1080px) {
  body.kt-nav-open { overflow: hidden; }
  .kt-navtoggle { display: inline-flex; }
  .kt-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: min(368px, 88vw);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 22px 20px 32px;
    background: var(--kt-green);
    border-left: 1px solid var(--kt-line);
    box-shadow: -14px 0 34px rgba(0, 0, 0, .5);
    overflow-y: auto;
    transform: translateX(102%);
    visibility: hidden;
    transition: transform .32s var(--kt-ease), visibility 0s linear .32s;
  }
  .kt-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
    transition: transform .32s var(--kt-ease), visibility 0s;
  }
  .kt-nav__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 14px;
    margin-bottom: 14px;
    border-bottom: 1px dashed var(--kt-line);
  }
  .kt-nav__scorelabel {
    font-size: 11px;
    letter-spacing: .14em;
    color: var(--kt-mist);
  }
  .kt-nav__score {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    font-size: 30px;
    font-weight: 700;
    color: var(--kt-cyan);
    line-height: 1;
  }
  .kt-nav__score .kt-num { font-family: var(--kt-mono); }
  .kt-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .kt-nav__item + .kt-nav__item { border-top: 1px solid var(--kt-line); }
  .kt-nav__link {
    padding: 14px 4px;
    font-size: 17px;
    color: var(--kt-paper);
  }
  .kt-nav__link::after { left: 4px; right: auto; width: 22px; bottom: 8px; }
  .kt-nav__foot {
    display: grid;
    gap: 10px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px dashed var(--kt-line);
  }
  .kt-nav__foottitle {
    font-size: 12px;
    letter-spacing: .16em;
    color: var(--kt-amber);
  }
  .kt-nav__note {
    font-size: 12px;
    color: var(--kt-stone);
  }
  .kt-header__inner { min-height: 64px; }
}
@media (max-width: 900px) {
  .kt-grid--2,
  .kt-grid--3,
  .kt-grid--split { grid-template-columns: minmax(0, 1fr); }
  .kt-toc { position: static; }
}
@media (max-width: 680px) {
  body { font-size: 15.5px; }
  .kt-statusbar__chip { font-size: 11px; }
  .kt-statusbar__team { display: none; }
  .kt-brand__tagline { display: none; }
  .kt-brand__mark { width: 36px; height: 36px; font-size: 12px; }
  .kt-brand__name { font-size: 17px; }
  .kt-header__actions .kt-btn--primary { display: none; }
  .kt-header__actions .kt-btn { padding: 8px 12px; font-size: 12px; }
  .kt-footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .kt-footer__bottominner { flex-direction: column; align-items: flex-start; }
  .kt-top { align-self: stretch; justify-content: space-between; }
}

/* ---------- 13. 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;
  }
  html.kt-js [data-reveal] { opacity: 1; transform: none; }
}