/* ============================================================
   K8体育汇 · 共享外壳样式 /assets/site.css
   夜间球场控制室：暗底分区 + 荧光绿操作色 + 橙红警示 + 档案纸标签
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root {
  --k8-night: #04110B;
  --k8-deep: #0B2418;
  --k8-panel: #102F20;
  --k8-line: #1E4D36;
  --k8-neon: #39FF88;
  --k8-neon-soft: #B8FFD9;
  --k8-alert: #FF5A36;
  --k8-warn: #FF9A3D;
  --k8-amber: #FFC857;
  --k8-ink: #E9F7EF;
  --k8-body: #C9E4D6;
  --k8-mute: #7FA992;
  --k8-paper: #F0EAD6;
  --k8-paper-edge: #D8CFB4;

  --k8-shell: 1200px;
  --k8-gutter: clamp(16px, 4vw, 40px);
  --k8-rad: 4px;

  --k8-font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --k8-font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --k8-font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --k8-ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 138px;
}

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--k8-night);
  background-image:
    radial-gradient(920px 520px at 12% -12%, rgba(57, 255, 136, .10), transparent 62%),
    radial-gradient(760px 420px at 90% 2%, rgba(255, 154, 61, .07), transparent 66%);
  background-attachment: fixed;
  color: var(--k8-ink);
  font-family: var(--k8-font);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-family: var(--k8-font-display);
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.15;
  color: var(--k8-ink);
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1em; padding-left: 1.15em; }

a {
  color: var(--k8-neon-soft);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(57, 255, 136, .38);
}
a:hover { color: var(--k8-neon); }

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

button { font: inherit; color: inherit; }

hr { border: 0; }

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

/* ---------- 3. 通用工具 ---------- */
.k8-shell {
  width: 100%;
  max-width: var(--k8-shell);
  margin: 0 auto;
  padding-left: var(--k8-gutter);
  padding-right: var(--k8-gutter);
}

.k8-visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.k8-skip {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 200;
  display: inline-block;
  padding: 10px 16px;
  background: var(--k8-neon);
  color: #04110B;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transition: top .18s var(--k8-ease);
}
.k8-skip:focus,
.k8-skip:focus-visible { top: 10px; color: #04110B; }

.k8-num {
  font-family: var(--k8-font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  letter-spacing: .04em;
}

.k8-divider {
  height: 1px;
  margin: 28px 0;
  background: repeating-linear-gradient(90deg, var(--k8-line) 0 12px, transparent 12px 20px);
}

/* ---------- 4. 按钮 / 筛选标签 ---------- */
.k8-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 2px;
  background: transparent;
  color: var(--k8-ink);
  font-family: var(--k8-font-display);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s var(--k8-ease), color .18s var(--k8-ease), border-color .18s var(--k8-ease);
}

.k8-btn--neon {
  background: var(--k8-neon);
  border-color: var(--k8-neon);
  color: #04110B;
}
.k8-btn--neon:hover { background: var(--k8-neon-soft); border-color: var(--k8-neon-soft); color: #04110B; }

.k8-btn--ghost {
  background: rgba(57, 255, 136, .06);
  border-color: var(--k8-neon);
  color: var(--k8-neon);
}
.k8-btn--ghost:hover { background: rgba(57, 255, 136, .16); color: var(--k8-neon-soft); }

.k8-btn--paper {
  background: var(--k8-paper);
  border-color: var(--k8-paper-edge);
  color: #12261B;
}
.k8-btn--paper:hover { background: #FFF8E4; color: #12261B; }

.k8-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: rgba(16, 47, 32, .8);
  border: 1px solid var(--k8-line);
  border-radius: 2px;
  color: var(--k8-body);
  font-family: var(--k8-font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .18s var(--k8-ease), color .18s var(--k8-ease), background-color .18s var(--k8-ease);
}
.k8-chip:hover { border-color: var(--k8-neon); color: var(--k8-neon-soft); }
.k8-chip[aria-pressed="true"],
.k8-chip.is-active {
  background: rgba(57, 255, 136, .14);
  border-color: var(--k8-neon);
  color: var(--k8-neon);
}

/* ---------- 5. 标签 ---------- */
.k8-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  background: var(--k8-panel);
  border: 1px solid var(--k8-line);
  border-radius: 2px;
  color: var(--k8-neon-soft);
  font-family: var(--k8-font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.k8-tag--paper {
  background: var(--k8-paper);
  border-color: var(--k8-paper-edge);
  color: #12261B;
}
.k8-tag--neon {
  background: rgba(57, 255, 136, .12);
  border-color: var(--k8-neon);
  color: var(--k8-neon);
}
.k8-tag--alert {
  background: rgba(255, 90, 54, .14);
  border-color: var(--k8-alert);
  color: var(--k8-alert);
}

/* ---------- 6. 图片容器 ---------- */
.k8-figure {
  position: relative;
  margin: 0;
  background: var(--k8-panel);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-rad);
  overflow: hidden;
}
.k8-figure__img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: linear-gradient(150deg, #0B2418, #04110B 70%);
}
.k8-figure--wide .k8-figure__img { aspect-ratio: 21 / 9; }
.k8-figure--tall .k8-figure__img { aspect-ratio: 4 / 5; }
.k8-figure__cap {
  padding: 9px 12px;
  border-top: 1px dashed var(--k8-line);
  color: var(--k8-mute);
  font-size: .76rem;
  line-height: 1.5;
}
.k8-figure__tag {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  padding: 3px 8px;
  background: var(--k8-paper);
  border: 1px solid var(--k8-paper-edge);
  border-radius: 2px;
  color: #12261B;
  font-family: var(--k8-font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ---------- 7. 面包屑 ---------- */
.k8-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-family: var(--k8-font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--k8-mute);
}
.k8-crumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.k8-crumbs__item a {
  color: var(--k8-neon-soft);
  text-decoration: none;
}
.k8-crumbs__item a:hover { color: var(--k8-neon); }
.k8-crumbs__sep { color: var(--k8-line); }

/* ---------- 8. 章节 / 栅格 / 卡片 ---------- */
.k8-section {
  position: relative;
  padding: clamp(38px, 6vw, 74px) 0;
  border-top: 1px solid rgba(30, 77, 54, .55);
  transition: background-color .3s var(--k8-ease);
}
.k8-section:first-child { border-top: 0; }
.k8-section.is-current {
  background-image: linear-gradient(90deg, rgba(57, 255, 136, .06), transparent 62%);
}
.k8-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: 22px;
}
.k8-section__num {
  font-family: var(--k8-font-mono);
  font-size: .8rem;
  letter-spacing: .16em;
  color: var(--k8-neon);
}
.k8-section__title {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
}
.k8-section__note {
  margin: 0;
  color: var(--k8-mute);
  font-family: var(--k8-font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.k8-grid { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 720px) {
  .k8-grid--2,
  .k8-grid--3,
  .k8-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .k8-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .k8-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.k8-card {
  position: relative;
  padding: 18px;
  background: var(--k8-panel);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-rad);
  transition: border-color .2s var(--k8-ease), box-shadow .2s var(--k8-ease), transform .2s var(--k8-ease);
}
.k8-card:hover,
.k8-card:focus-within {
  border-color: var(--k8-neon);
  box-shadow: 0 0 0 1px rgba(57, 255, 136, .22), 0 16px 34px -24px rgba(57, 255, 136, .55);
}
.k8-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.k8-card__title {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: .02em;
}
.k8-card__meta {
  font-family: var(--k8-font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--k8-mute);
}
.k8-card__body { color: var(--k8-body); font-size: .94rem; }
.k8-card__body p:last-child { margin-bottom: 0; }

/* ---------- 9. 正文容器 ---------- */
.k8-prose {
  max-width: 72ch;
  color: var(--k8-body);
  font-size: 1rem;
  line-height: 1.7;
}
.k8-prose > h2 { margin-top: 1.8em; font-size: clamp(1.25rem, 2.6vw, 1.7rem); color: var(--k8-ink); }
.k8-prose > h3 { margin-top: 1.5em; font-size: 1.1rem; color: var(--k8-neon-soft); }
.k8-prose > h2:first-child,
.k8-prose > h3:first-child { margin-top: 0; }
.k8-prose strong { color: var(--k8-ink); }
.k8-prose ul,
.k8-prose ol { line-height: 1.7; }
.k8-prose li { margin-bottom: .35em; }

/* ---------- 10. 头部 ---------- */
.k8-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(4, 17, 11, .99), rgba(4, 17, 11, .93));
  border-bottom: 1px solid var(--k8-line);
  backdrop-filter: blur(6px);
}

.k8-progress {
  position: relative;
  height: 3px;
  background: #0A1F14;
}
.k8-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--k8-neon), var(--k8-amber));
  box-shadow: 0 0 12px rgba(57, 255, 136, .55);
  transition: width .12s linear;
}

/* 上层：品牌说明层 */
.k8-header__deck {
  background: var(--k8-deep);
  border-bottom: 1px solid var(--k8-line);
}
.k8-header__deck-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding-block: 7px;
}
.k8-header__brandline {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  min-width: 0;
}
.k8-header__badge {
  flex: 0 0 auto;
  padding: 2px 7px;
  background: rgba(255, 200, 87, .1);
  border: 1px solid rgba(255, 200, 87, .45);
  border-radius: 2px;
  color: var(--k8-amber);
  font-family: var(--k8-font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
}
.k8-header__brandtext {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  min-width: 0;
}
.k8-header__brandname {
  color: var(--k8-ink);
  font-family: var(--k8-font-display);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .06em;
}
.k8-header__brandnote {
  color: var(--k8-mute);
  font-size: .74rem;
  letter-spacing: .04em;
}

.k8-utility { margin-left: auto; }
.k8-utility__list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.k8-utility__item { display: flex; }
.k8-utility__link {
  display: inline-block;
  padding: 4px 9px;
  border: 1px solid transparent;
  border-radius: 2px;
  color: var(--k8-mute);
  font-family: var(--k8-font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  text-decoration: none;
  transition: color .18s var(--k8-ease), border-color .18s var(--k8-ease), background-color .18s var(--k8-ease);
}
.k8-utility__link:hover {
  color: var(--k8-neon);
  border-color: var(--k8-line);
  background: rgba(57, 255, 136, .07);
}

.k8-header__cta {
  flex: 0 0 auto;
  padding: 6px 12px;
  font-size: .72rem;
}

/* 下层：主栏目层 */
.k8-header__bar { background: rgba(4, 17, 11, .92); }
.k8-header__bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding-block: 9px;
}

.k8-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--k8-ink);
}
.k8-logo__mark {
  padding: 5px 9px;
  background: rgba(57, 255, 136, .08);
  border: 1px solid var(--k8-neon);
  border-radius: 2px;
  color: var(--k8-neon);
  font-family: var(--k8-font-mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1;
}
.k8-logo__word {
  font-family: var(--k8-font-display);
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: .2em;
}
.k8-logo:hover .k8-logo__word { color: var(--k8-neon); }

.k8-navtoggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 8px 12px;
  background: rgba(16, 47, 32, .85);
  border: 1px solid var(--k8-line);
  border-radius: 2px;
  color: var(--k8-neon-soft);
  cursor: pointer;
  transition: border-color .18s var(--k8-ease), color .18s var(--k8-ease);
}
.k8-navtoggle:hover { border-color: var(--k8-neon); color: var(--k8-neon); }
.k8-navtoggle__bars { display: inline-flex; flex-direction: column; gap: 4px; }
.k8-navtoggle__bars i {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .18s var(--k8-ease), opacity .18s var(--k8-ease);
}
.k8-navtoggle__label {
  font-family: var(--k8-font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
}
.k8-navtoggle[aria-expanded="true"] .k8-navtoggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.k8-navtoggle[aria-expanded="true"] .k8-navtoggle__bars i:nth-child(2) { opacity: 0; }
.k8-navtoggle[aria-expanded="true"] .k8-navtoggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.k8-nav { margin-left: auto; }
.k8-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.k8-nav__item { display: block; }
.k8-nav__link {
  position: relative;
  display: block;
  padding: 9px 13px;
  border: 1px solid transparent;
  border-radius: 2px;
  color: var(--k8-ink);
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  transition: color .18s var(--k8-ease), border-color .18s var(--k8-ease), background-color .18s var(--k8-ease);
}
.k8-nav__link::before {
  content: "";
  position: absolute;
  left: 13px;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--k8-neon);
  transition: width .18s var(--k8-ease);
}
.k8-nav__link:hover {
  color: var(--k8-neon-soft);
  border-color: var(--k8-line);
  background: rgba(57, 255, 136, .06);
}
.k8-nav__link:hover::before { width: 16px; }
.k8-nav__link[aria-current="page"] {
  color: var(--k8-neon);
  border-color: rgba(57, 255, 136, .5);
  background: rgba(57, 255, 136, .1);
}
.k8-nav__link[aria-current="page"]::before { width: 22px; }

/* ---------- 11. 页脚 ---------- */
.k8-footer {
  position: relative;
  margin-top: clamp(40px, 7vw, 92px);
  overflow: hidden;
  background: linear-gradient(180deg, #0B2418, #04110B 72%);
  border-top: 1px solid var(--k8-line);
}
.k8-footer__rule {
  height: 10px;
  background: repeating-linear-gradient(90deg, var(--k8-neon) 0 2px, transparent 2px 22px);
  opacity: .5;
}
.k8-footer__inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(28px, 5vw, 54px);
  padding-bottom: 22px;
}
.k8-footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
@media (min-width: 900px) {
  .k8-footer__top { grid-template-columns: minmax(240px, .85fr) 2fr; gap: 34px; }
}
.k8-footer__brandline {
  margin: 0 0 6px;
  font-family: var(--k8-font-display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--k8-ink);
}
.k8-footer__tagline {
  margin: 0 0 14px;
  color: var(--k8-neon-soft);
  font-size: .95rem;
}
.k8-footer__status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--k8-mute);
  font-size: .8rem;
}
.k8-footer__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) {
  .k8-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .k8-footer__cols { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.k8-footer__col {
  position: relative;
  padding: 20px 16px 16px;
  background: rgba(16, 47, 32, .62);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-rad);
}
.k8-footer__col::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--k8-neon), rgba(57, 255, 136, 0));
}
.k8-footer__coltitle {
  margin: 0 0 12px;
  color: var(--k8-neon);
  font-family: var(--k8-font-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.k8-footer__links {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.k8-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--k8-body);
  font-size: .92rem;
  text-decoration: none;
  transition: color .18s var(--k8-ease);
}
.k8-footer__link::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  background: var(--k8-line);
  transform: rotate(45deg);
  transition: background-color .18s var(--k8-ease);
}
.k8-footer__link:hover { color: var(--k8-neon); }
.k8-footer__link:hover::before { background: var(--k8-neon); }

.k8-footer__facts {
  display: grid;
  gap: 9px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}
.k8-footer__facts li { display: grid; gap: 2px; }
.k8-footer__label {
  color: var(--k8-mute);
  font-family: var(--k8-font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.k8-footer__value {
  color: var(--k8-ink);
  font-size: .9rem;
  word-break: break-word;
}
.k8-footer__note {
  margin: 0;
  color: var(--k8-mute);
  font-size: .78rem;
  line-height: 1.7;
}
.k8-footer__meta {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 22px;
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px dashed var(--k8-line);
}
.k8-footer__icp,
.k8-footer__copy {
  margin: 0;
  color: var(--k8-mute);
  font-size: .78rem;
}
.k8-footer__mark {
  position: absolute;
  right: -12px;
  bottom: -46px;
  z-index: 1;
  color: rgba(57, 255, 136, .05);
  font-family: var(--k8-font-display);
  font-size: clamp(120px, 26vw, 300px);
  font-weight: 800;
  line-height: .8;
  letter-spacing: -.02em;
  pointer-events: none;
  user-select: none;
}

/* ---------- 12. 动效协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--k8-ease), transform .5s var(--k8-ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-section-link].is-current { color: var(--k8-neon); }

@keyframes k8-pulse {
  0% { opacity: 1; }
  18% { opacity: .35; }
  36% { opacity: 1; }
  54% { opacity: .5; }
  100% { opacity: 1; }
}
.k8-pulse { animation: k8-pulse 1.1s var(--k8-ease) 1 both; }

/* ---------- 13. 响应式 ---------- */
@media (max-width: 900px) {
  .k8-header__brandnote { display: none; }
  html { scroll-padding-top: 150px; }
}

@media (max-width: 880px) {
  .k8-header__bar-inner { gap: 10px; }
  .k8-navtoggle { display: inline-flex; }

  .k8-nav {
    order: 5;
    flex: 1 0 100%;
    width: 100%;
    margin-left: 0;
    padding-top: 10px;
    border-top: 1px solid var(--k8-line);
  }
  .k8-nav__list {
    flex-wrap: wrap;
    gap: 6px;
  }
  .k8-nav__item--more { display: none; }
  .k8-nav[data-open] .k8-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
  .k8-nav[data-open] .k8-nav__item { width: 100%; }
  .k8-nav[data-open] .k8-nav__item--more { display: block; }
  .k8-nav__link {
    padding: 10px 12px;
    font-size: .88rem;
  }
  .k8-nav[data-open] .k8-nav__link {
    background: rgba(16, 47, 32, .7);
    border-color: var(--k8-line);
  }
  .k8-nav__link::before { display: none; }
  .k8-nav[data-open] .k8-nav__item--more .k8-nav__link {
    border-style: dashed;
    color: var(--k8-neon-soft);
  }
  .k8-footer__mark { opacity: .7; }
}

@media (max-width: 640px) {
  .k8-header__deck-inner { gap: 8px 12px; }
  .k8-utility { margin-left: 0; }
  .k8-utility__link { padding: 4px 8px; }
  .k8-header__cta { padding: 6px 10px; font-size: .68rem; }
  .k8-prose { max-width: 100%; }
  html { scroll-padding-top: 168px; }
}

/* ---------- 14. 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;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .k8-progress__bar { transition: none; }
}