/* ==========================================================================
   明升体育 · 共享样式表  /assets/site.css
   夜战指挥台视觉体系：深墨绿底 + 荧光青数据 + 琥珀金行动
   ========================================================================== */

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

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

body,
h1, h2, h3, h4, h5, p, ul, ol, dl, dd, dt, figure, blockquote { margin: 0; }

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

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

[hidden] { display: none !important; }

/* ---------- 2. TOKENS ---------- */
:root {
  --pitch-black: #071411;
  --deep-green: #0B2019;
  --panel: #122A22;
  --panel-raised: #17362C;
  --hairline: #1F4A3D;
  --cyan: #2EE6C8;
  --cyan-soft: #8FF6E4;
  --amber: #F2B440;
  --amber-deep: #C6851C;
  --ink: #EAF4F0;
  --ink-2: #A7C2B7;
  --ink-3: #77958A;
  --alert: #FF6B5A;

  --font-display: 'Archivo Narrow', 'Oswald', 'Source Han Sans SC', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --rail: 264px;
  --page-max: 1280px;
  --gutter: 22px;
  --cut: 8px;
  --cut-clip: polygon(0 var(--cut), var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  --ease-out: cubic-bezier(.22, .8, .2, 1);
  --shadow-float: 0 18px 44px -22px rgba(0, 0, 0, .85);
}

@media (min-width: 768px) {
  :root { --gutter: 34px; }
}
@media (min-width: 1200px) {
  :root { --gutter: 44px; }
}

/* ---------- 3. BASE ---------- */
body {
  background: var(--pitch-black);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    repeating-linear-gradient(90deg, rgba(31, 74, 61, .34) 0 1px, transparent 1px 96px);
  background-attachment: fixed;
}

@media (min-width: 1200px) {
  body { padding-left: var(--rail); }
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.08;
  color: var(--ink);
}

p { max-width: 76ch; }

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 0;
}

/* 滚动条 */
* { scrollbar-color: var(--hairline) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--pitch-black); }
::-webkit-scrollbar-thumb { background: var(--hairline); }
::-webkit-scrollbar-thumb:hover { background: var(--cyan); }

/* ---------- 4. SKIP LINK ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  transform: translateY(-130%);
  background: var(--cyan);
  color: var(--pitch-black);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 20px;
  transition: transform .2s var(--ease-out);
}
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, #0A1D18 0%, rgba(7, 20, 17, .97) 100%);
  border-bottom: 1px solid var(--hairline);
}

.header-scale {
  height: 4px;
  background-image: repeating-linear-gradient(90deg, var(--hairline) 0 1px, transparent 1px 12px);
  opacity: .85;
}

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-soft));
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px var(--gutter);
  max-width: var(--page-max);
  margin: 0 auto;
}

.site-header__brand { flex: 1 1 auto; min-width: 0; }

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  border-left: 3px solid var(--cyan);
}

.brand__mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 23px;
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--ink);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-3);
  white-space: nowrap;
}

/* 导航 */
.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 18px 22px;
  background: var(--deep-green);
  border-bottom: 1px solid var(--hairline);
  box-shadow: var(--shadow-float);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity .22s var(--ease-out), transform .22s var(--ease-out), visibility .22s;
  max-height: calc(100vh - 70px);
  overflow-y: auto;
}

.site-nav[data-open="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 14px;
  color: var(--ink-2);
  font-size: 16px;
  letter-spacing: .02em;
  border-left: 2px solid transparent;
  transition: color .18s, background .18s, border-color .18s;
}

.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink-3);
  transition: color .18s;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--cyan);
  background: rgba(46, 230, 200, .07);
}

.site-nav__link[aria-current="page"] {
  color: var(--ink);
  background: linear-gradient(90deg, rgba(46, 230, 200, .16), transparent 85%);
  border-left-color: var(--cyan);
}

.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--cyan); }

/* 旧版导航栏 */
.legacy-nav {
  border-top: 1px dashed var(--hairline);
  padding-top: 10px;
}

.legacy-nav__trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink-3);
  border: 1px solid var(--hairline);
  transition: color .18s, border-color .18s, background .18s;
}

.legacy-nav__trigger::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform .2s var(--ease-out);
}

.legacy-nav__trigger[aria-expanded="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(46, 230, 200, .08);
}

.legacy-nav__trigger[aria-expanded="true"]::after {
  transform: rotate(225deg) translateY(-1px);
}

.legacy-nav__panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .28s var(--ease-out), opacity .2s linear, margin .2s;
}

.legacy-nav__panel[data-open="true"] {
  max-height: 260px;
  opacity: 1;
  margin-top: 10px;
}

.legacy-nav__title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-3);
  padding: 0 14px 6px;
}

.legacy-nav__list { display: flex; flex-direction: column; gap: 1px; }

.legacy-nav__link {
  display: block;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--ink-2);
  background: var(--panel);
  border-left: 2px solid var(--hairline);
  transition: color .18s, border-color .18s, transform .18s var(--ease-out);
}

.legacy-nav__link:hover {
  color: var(--amber);
  border-left-color: var(--amber);
  transform: translateX(3px);
}

.site-nav__cta { margin-top: 4px; }

/* 工具区 */
.site-header__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  background: var(--panel-raised);
  border: 1px solid var(--hairline);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  transition: color .18s, border-color .18s, background .18s;
}

.tool-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(46, 230, 200, .08);
}

.tool-btn__txt { display: none; }

.tool-btn__kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  padding: 3px 6px;
  border: 1px solid var(--hairline);
  color: var(--cyan);
}

.ver-tag {
  display: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--ink-3);
  padding: 6px 9px;
  border: 1px dashed var(--hairline);
}

.site-header__cta { display: none; flex: 0 0 auto; }

/* 汉堡按钮 */
.nav-toggle {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  border: 1px solid var(--hairline);
  background: var(--panel-raised);
  color: var(--ink-2);
  transition: color .18s, border-color .18s;
}

.nav-toggle:hover { color: var(--cyan); border-color: var(--cyan); }

.nav-toggle__bar {
  position: relative;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background .18s;
}

.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .24s var(--ease-out), opacity .18s;
}

.nav-toggle__bar::before { top: -6px; }
.nav-toggle__bar::after { top: 6px; }

.nav-toggle[aria-expanded="true"] { color: var(--cyan); border-color: var(--cyan); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: translateY(-6px) rotate(-45deg); }

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

/* 平板调整 */
@media (min-width: 560px) {
  .tool-btn__txt { display: inline; }
  .ver-tag { display: inline-block; }
}

@media (min-width: 900px) {
  .brand__mark { font-size: 26px; }
  .nav-toggle__label { display: inline; }
}

/* 桌面端：左侧固定战术板 */
@media (min-width: 1200px) {
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail);
    border-bottom: 0;
    border-right: 1px solid var(--hairline);
    overflow-y: auto;
    overflow-x: hidden;
    background: linear-gradient(180deg, #0A1D18 0%, var(--pitch-black) 100%);
  }

  .header-scale {
    background-image: repeating-linear-gradient(180deg, var(--hairline) 0 1px, transparent 1px 12px);
    height: 5px;
    width: 100%;
  }

  .site-header__inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 26px;
    max-width: none;
    margin: 0;
    padding: 26px 20px 34px;
    min-height: calc(100% - 5px);
  }

  .site-header__brand { flex: 0 0 auto; }

  .brand { padding-left: 14px; border-left-width: 3px; }
  .brand__mark { font-size: 30px; }

  .site-nav {
    position: static;
    flex: 1 1 auto;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0;
    gap: 14px;
    overflow: visible;
    max-height: none;
  }

  .site-nav__link { padding: 10px 14px; font-size: 15px; }
  .site-nav__cta { display: none; }

  .site-header__tools {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding-top: 14px;
    border-top: 1px dashed var(--hairline);
  }

  .tool-btn { width: 100%; justify-content: space-between; }

  .site-header__cta { display: block; }

  .nav-toggle { display: none; }
}

/* ---------- 6. 命令面板 ---------- */
.palette {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: none;
}

.palette[data-open="true"] { display: block; }

.palette__scrim {
  position: absolute;
  inset: 0;
  background: rgba(4, 12, 10, .78);
  backdrop-filter: blur(3px);
}

.palette__box {
  position: relative;
  width: min(600px, calc(100% - 32px));
  margin: 12vh auto 0;
  background: var(--panel-raised);
  border: 1px solid var(--hairline);
  border-top: 3px solid var(--cyan);
  box-shadow: var(--shadow-float);
  padding: 20px 20px 16px;
  clip-path: var(--cut-clip);
}

.palette__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--hairline);
}

.palette__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.palette__close {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-3);
  border: 1px solid var(--hairline);
  padding: 5px 9px;
  transition: color .18s, border-color .18s;
}
.palette__close:hover { color: var(--amber); border-color: var(--amber); }

.palette__field { margin-top: 14px; }

.palette__input {
  width: 100%;
  background: var(--pitch-black);
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-size: 16px;
  padding: 12px 14px;
  transition: border-color .18s;
}
.palette__input::placeholder { color: var(--ink-3); }
.palette__input:focus { outline: none; border-color: var(--cyan); }

.palette__empty {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-3);
}

.palette__list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 52vh;
  overflow-y: auto;
}

.palette__item { list-style: none; }

.palette__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 12px;
  border-left: 2px solid transparent;
  color: var(--ink-2);
  transition: background .16s, color .16s, border-color .16s;
}

.palette__link:hover,
.palette__link.is-active {
  background: rgba(46, 230, 200, .1);
  color: var(--ink);
  border-left-color: var(--cyan);
}

.palette__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink-3);
}

.palette__link.is-active .palette__idx { color: var(--cyan); }

.palette__label { flex: 1 1 auto; font-size: 15px; }

.palette__grp {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--ink-3);
  border: 1px solid var(--hairline);
  padding: 3px 7px;
}

/* ---------- 7. FOOTER ---------- */
.site-footer {
  margin-top: 90px;
  background: var(--deep-green);
  border-top: 1px solid var(--hairline);
  position: relative;
}

.footer-scale {
  height: 5px;
  background-image: repeating-linear-gradient(90deg, var(--hairline) 0 1px, transparent 1px 14px);
  opacity: .8;
}

.site-footer__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 52px var(--gutter) 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}

.footer-brand__mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 30px;
  letter-spacing: -.02em;
  line-height: 1;
  padding-left: 12px;
  border-left: 3px solid var(--amber);
}

.footer-brand__sig {
  margin-top: 12px;
  font-size: 14px;
  color: var(--ink-2);
  max-width: 34ch;
}

.footer-contact {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-contact__row {
  display: grid;
  gap: 4px;
  padding-bottom: 9px;
  border-bottom: 1px dashed rgba(31, 74, 61, .9);
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-3);
}

.footer-contact__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ink);
  word-break: break-word;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px 22px;
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}

.footer-col__list { display: flex; flex-direction: column; gap: 9px; }

.footer-col__link {
  font-size: 14px;
  color: var(--ink-2);
  transition: color .18s, padding-left .18s var(--ease-out);
}

.footer-col__link:hover {
  color: var(--amber);
  padding-left: 6px;
}

.footer-bar {
  margin-top: 46px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-bar__legal,
.footer-bar__note,
.footer-bar__year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-3);
  max-width: 90ch;
}

.footer-bar__year { color: var(--ink-2); }

@media (min-width: 640px) {
  .footer-cols { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .footer-top { grid-template-columns: minmax(280px, 1fr) 2.4fr; gap: 52px; }
  .footer-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
  }
  .footer-bar__note { flex: 1 1 320px; }
}

/* ---------- 8. 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.wrap--wide { max-width: 1440px; }

.section { padding: 64px 0; }

.section--band {
  background: var(--deep-green);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 48px 0;
}

.lede {
  font-size: 18px;
  color: var(--ink-2);
  max-width: 62ch;
}

.idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink-3);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--cyan);
  transform: skewX(-24deg);
}

.rule-slash {
  height: 12px;
  border: 0;
  margin: 34px 0;
  background: repeating-linear-gradient(
    102deg,
    var(--hairline) 0 1px,
    transparent 1px 14px
  );
  opacity: .9;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--ink);
  background: var(--panel-raised);
  border: 1px solid var(--hairline);
  position: relative;
  transition: color .18s, background .18s, border-color .18s, transform .18s var(--ease-out);
}

.btn::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 12px;
  height: 12px;
  background: linear-gradient(135deg, transparent 50%, currentColor 50%);
  opacity: .35;
  transition: opacity .18s;
}

.btn:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }
.btn:hover::after { opacity: .9; }

.btn--amber {
  background: var(--amber);
  border-color: var(--amber);
  color: #1A1204;
  font-weight: 600;
}
.btn--amber:hover {
  background: var(--amber-deep);
  border-color: var(--amber-deep);
  color: #100B02;
}

.btn--ghost { background: transparent; }

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

.btn--block { width: 100%; }

/* 面板 */
.panel {
  background: var(--panel);
  border: 1px solid var(--hairline);
  padding: 22px;
  clip-path: var(--cut-clip);
}

.panel--raised {
  background: var(--panel-raised);
  box-shadow: var(--shadow-float);
  transform: translateY(-4px);
}

.panel--cut { border-left: 3px solid var(--cyan); }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  padding: 4px 9px;
  border: 1px solid var(--hairline);
  color: var(--ink-2);
}

.tag--cyan { color: var(--cyan); border-color: var(--cyan); }
.tag--amber { color: var(--amber); border-color: var(--amber); }
.tag--alert { color: var(--alert); border-color: var(--alert); }

/* 数据 */
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  background: var(--panel);
  border-left: 2px solid var(--cyan);
}

.stat__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 40px;
  line-height: 1;
  letter-spacing: 0;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-3);
}

.data-strip {
  display: flex;
  gap: 26px;
  overflow-x: auto;
  padding: 20px 0;
  scrollbar-width: thin;
}

.data-strip > * { flex: 0 0 auto; min-width: 160px; }

/* 说明牌 */
.spec-list { display: flex; flex-direction: column; gap: 2px; }

.spec-list__item {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--panel);
  border-left: 2px solid var(--hairline);
  transition: border-color .18s, background .18s;
}

.spec-list__item:hover {
  border-left-color: var(--cyan);
  background: var(--panel-raised);
}

.spec-list__term {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.spec-list__desc {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-2);
  margin: 0;
}

/* 显现 */
.entry[data-reveal] {
  opacity: 0;
  transform: translate(-10px, 12px);
  transition: opacity .32s var(--ease-out), transform .32s var(--ease-out);
}
.entry[data-reveal].is-in { opacity: 1; transform: none; }

/* 章节索引链接 */
.chapter-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--ink-3);
  border-bottom: 2px solid transparent;
  transition: color .18s, border-color .18s;
}
.chapter-link:hover { color: var(--cyan); }
.chapter-link.is-active {
  color: var(--ink);
  border-bottom-color: var(--cyan);
}
.chapter-link .idx { color: inherit; }

/* 面包屑 */
.breadcrumb { padding: 16px 0 0; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-3);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--hairline);
}
.breadcrumb__link { color: var(--ink-2); transition: color .18s; }
.breadcrumb__link:hover { color: var(--cyan); }

/* 网格 */
.grid { display: grid; gap: 22px; }

@media (min-width: 900px) {
  .grid--4-8 { grid-template-columns: 4fr 8fr; }
  .grid--5-7 { grid-template-columns: 5fr 7fr; }
  .grid--3up { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* 图片容器 */
.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, var(--deep-green), var(--panel));
  border: 1px solid var(--hairline);
  clip-path: var(--cut-clip);
}

.media img,
.media picture,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media--16-9 { aspect-ratio: 16 / 9; }
.media--4-3 { aspect-ratio: 4 / 3; }
.media--1-1 { aspect-ratio: 1 / 1; }

.media__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 20, 17, 0) 42%, rgba(7, 20, 17, .9) 100%);
  pointer-events: none;
}

.media__label {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

@media (max-width: 899px) {
  .media--4-3 { aspect-ratio: 3 / 2; }
}

/* ---------- 9. 状态与无障碍 ---------- */
@media (max-width: 1199px) {
  html.is-nav-open { overflow: hidden; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .entry[data-reveal] { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
  .panel--raised { transform: none; }
}