/* ============================================================
   猫头鹰体育 · 共享样式表 /assets/site.css
   夜猎靛蓝底 · 琥珀金 / 荧光青数据高亮 · 直角细线精密网格
   ============================================================ */

/* ---------- 0. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, p, figure, blockquote, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; }
ul[class], ol[class] { list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; border-spacing: 0; width: 100%; }
hr { border: 0; border-top: 1px solid rgba(237, 241, 247, .10); margin: 0; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid #35E0C8;
  outline-offset: 2px;
}

/* ---------- 1. 变量 ---------- */
:root {
  /* 色彩 */
  --nfs-indigo: #0E1526;
  --nfs-charcoal: #05080F;
  --nfs-slate: #1B2438;
  --nfs-amber: #F0A22C;
  --nfs-amber-soft: #F7CE85;
  --nfs-cyan: #35E0C8;
  --nfs-white: #EDF1F7;
  --nfs-mist: #8C97A8;
  --nfs-red: #E4573D;
  --nfs-ice: #7FB6D9;

  /* 线与网格 */
  --line: rgba(237, 241, 247, .10);
  --line-strong: rgba(237, 241, 247, .18);
  --grid-cyan: rgba(53, 224, 200, .055);
  --ink-on-amber: #0B1020;

  /* 字体 */
  --font-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 度量 */
  --shell-max: 1400px;
  --gutter: 24px;
  --baseline: 8px;
  --header-h: 70px;
  --radius-tag: 2px;

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

/* ---------- 2. 基础排版 ---------- */
body {
  min-height: 100%;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .012em;
  color: var(--nfs-white);
  background-color: var(--nfs-indigo);
  background-image:
    linear-gradient(var(--grid-cyan) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-cyan) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
  background-position: -1px -1px, -1px -1px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 85% -20%, rgba(53, 224, 200, .10), transparent 55%),
    radial-gradient(90% 70% at -10% 8%, rgba(240, 162, 44, .07), transparent 60%),
    radial-gradient(120% 70% at 50% 120%, rgba(5, 8, 15, .92), transparent 72%);
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: .06em;
  color: var(--nfs-white);
}

h1 { font-size: clamp(38px, 7vw, 96px); }
h2 { font-size: clamp(26px, 3.4vw, 44px); }
h3 { font-size: clamp(20px, 2vw, 28px); letter-spacing: .05em; }

p { line-height: 1.75; }
strong { font-weight: 700; color: var(--nfs-white); }

code, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

#main-content { scroll-margin-top: calc(var(--header-h) + 14px); }

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

/* ---------- 3. 布局 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: 72px 0; }
.section--tight { padding: 48px 0; }

.section-head { max-width: 74ch; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--nfs-cyan);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--nfs-cyan);
  opacity: .75;
}

.section-title {
  margin-top: 14px;
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 900;
  letter-spacing: .06em;
  line-height: 1.08;
}

.section-lede {
  max-width: 58ch;
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--nfs-mist);
}

.offside-line {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--nfs-amber), rgba(240, 162, 44, 0) 82%);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.grid-12 > * { grid-column: 1 / -1; }

@media (min-width: 768px) {
  .c3 { grid-column: span 3; }
  .c4 { grid-column: span 4; }
  .c5 { grid-column: span 5; }
  .c6 { grid-column: span 6; }
  .c7 { grid-column: span 7; }
  .c8 { grid-column: span 8; }
  .c9 { grid-column: span 9; }
  .c12 { grid-column: span 12; }
}

/* ---------- 4. 页头：紧凑命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 8, 15, .94);
  border-bottom: 1px solid var(--line-strong);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-shell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: var(--header-h);
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  background: linear-gradient(160deg, var(--nfs-slate), var(--nfs-charcoal));
  border: 1px solid rgba(240, 162, 44, .55);
}

.brand-eye {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--nfs-amber);
  box-shadow: 0 0 6px rgba(240, 162, 44, .85);
}

.brand-words {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: .14em;
  color: var(--nfs-white);
}

.brand-code {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--nfs-mist);
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--nfs-mist);
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--nfs-cyan);
  box-shadow: 0 0 8px rgba(53, 224, 200, .9);
  animation: nfsPulse 3.2s ease-in-out infinite;
}

@keyframes nfsPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

/* 栏目索引 */
.primary-nav {
  min-width: 0;
  justify-self: center;
  max-width: 100%;
}

.nav-index {
  display: flex;
  align-items: stretch;
  gap: 2px;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(53, 224, 200, .35) transparent;
}

.nav-index::-webkit-scrollbar { height: 2px; }
.nav-index::-webkit-scrollbar-track { background: transparent; }
.nav-index::-webkit-scrollbar-thumb { background: rgba(53, 224, 200, .35); }

.nav-index > li { flex: 0 0 auto; }

.nav-index a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 7px;
  height: var(--header-h);
  padding: 0 12px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--nfs-mist);
  white-space: nowrap;
  transition: color .18s var(--ease);
}

.nav-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: rgba(140, 151, 168, .6);
  transition: color .18s var(--ease);
}

.nav-index a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background: var(--nfs-amber);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease), background-color .22s var(--ease);
}

.nav-index a:hover { color: var(--nfs-white); }
.nav-index a:hover::after { transform: scaleX(1); background: rgba(240, 162, 44, .55); }

.nav-index a[aria-current="page"] {
  color: var(--nfs-white);
  font-weight: 700;
}

.nav-index a[aria-current="page"]::after { transform: scaleX(1); }
.nav-index a[aria-current="page"] .nav-idx { color: var(--nfs-amber); }

/* 操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-self: end;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line-strong);
  background: rgba(27, 36, 56, .6);
  color: var(--nfs-white);
  font-size: 13px;
  letter-spacing: .1em;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

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

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--nfs-amber);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: inherit;
  transition: transform .18s var(--ease), background-color .18s var(--ease);
}

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

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

.nav-toggle-label { font-family: var(--font-mono); }

/* 滚动进度轨 */
.header-rail {
  position: relative;
  height: 2px;
  background: rgba(237, 241, 247, .06);
}

.rail-fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--nfs-amber), var(--nfs-cyan));
  will-change: transform;
}

/* 跳转链接 */
.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 80;
  padding: 10px 18px;
  background: var(--nfs-amber);
  color: var(--ink-on-amber);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .06em;
  transition: top .18s var(--ease);
}

.skip-link:focus { top: 10px; }

/* ---------- 5. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .05em;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.btn-primary {
  background: var(--nfs-amber);
  border-color: var(--nfs-amber);
  color: var(--ink-on-amber);
}

.btn-primary:hover {
  background: var(--nfs-amber-soft);
  border-color: var(--nfs-amber-soft);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--nfs-white);
}

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

.btn-block { width: 100%; }

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 0;
  background-color: var(--nfs-charcoal);
  background-image: linear-gradient(180deg, rgba(27, 36, 56, .6), rgba(5, 8, 15, 0) 58%);
  border-top: 1px solid rgba(240, 162, 44, .38);
  color: var(--nfs-mist);
}

.footer-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 64px var(--gutter) 28px;
}

.footer-head {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.footer-brand { min-width: 0; }

.footer-close {
  margin-top: 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: .14em;
  color: var(--nfs-amber);
}

.footer-domain {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(140, 151, 168, .8);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-col { min-width: 0; }

.footer-col-title {
  position: relative;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--nfs-white);
}

.footer-col-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .45em;
  width: 5px;
  height: 5px;
  background: var(--nfs-cyan);
}

.footer-list {
  margin-top: 16px;
  list-style: none;
}

.footer-list li + li { margin-top: 10px; }

.footer-list a {
  font-size: 14px;
  color: var(--nfs-mist);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.footer-list a:hover {
  color: var(--nfs-amber);
  border-bottom-color: rgba(240, 162, 44, .6);
}

.footer-meta {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.contact-line {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.9;
}

.contact-label {
  flex: 0 0 64px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: rgba(140, 151, 168, .75);
}

.contact-value {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--nfs-white);
  word-break: break-all;
}

.contact-note {
  margin-top: 12px;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.85;
  color: rgba(140, 151, 168, .9);
}

.footer-legal-line {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.9;
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--nfs-ice);
  word-break: break-all;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
}

.footer-copy {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: rgba(140, 151, 168, .85);
}

.footer-copy--mono { font-family: var(--font-mono); }

/* ---------- 7. 面包屑 / 正文容器 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--nfs-mist);
}

.breadcrumb a { color: var(--nfs-mist); transition: color .18s var(--ease); }
.breadcrumb a:hover { color: var(--nfs-cyan); }
.breadcrumb [aria-current="page"] { color: var(--nfs-white); }
.crumb-sep { color: rgba(140, 151, 168, .5); }

.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--nfs-white);
}

.prose > p + p { margin-top: 1.1em; }
.prose h2 { margin: 2.2em 0 .7em; font-size: 24px; letter-spacing: .06em; }
.prose h3 { margin: 1.8em 0 .6em; font-size: 20px; }
.prose ul { margin: 1em 0; list-style: none; }
.prose li { position: relative; padding-left: 18px; margin-bottom: .5em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 9px;
  height: 1px;
  background: var(--nfs-amber);
}
.prose a {
  color: var(--nfs-cyan);
  border-bottom: 1px solid rgba(53, 224, 200, .45);
}
.prose a:hover { border-bottom-color: var(--nfs-cyan); }

/* ---------- 8. 基础组件 ---------- */
/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-tag);
  background: rgba(27, 36, 56, .5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--nfs-mist);
}

.tag--amber { color: var(--nfs-amber); border-color: rgba(240, 162, 44, .45); }
.tag--cyan { color: var(--nfs-cyan); border-color: rgba(53, 224, 200, .45); }
.tag--danger { color: var(--nfs-red); border-color: rgba(228, 87, 61, .5); }

.tag[aria-pressed="true"],
.tag--active {
  background: var(--nfs-cyan);
  border-color: var(--nfs-cyan);
  color: #04121A;
}

/* 分段切换 */
.tabset { position: relative; }

.tablist {
  display: flex;
  flex-wrap: nowrap;
  gap: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
  scrollbar-color: rgba(53, 224, 200, .35) transparent;
}

.tablist::-webkit-scrollbar { height: 2px; }
.tablist::-webkit-scrollbar-thumb { background: rgba(53, 224, 200, .35); }

.tab {
  position: relative;
  padding: 12px 18px;
  border-bottom: 2px solid transparent;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--nfs-mist);
  white-space: nowrap;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.tab:hover { color: var(--nfs-white); background: rgba(27, 36, 56, .5); }

.tab[aria-selected="true"] {
  color: var(--nfs-white);
  font-weight: 700;
  border-bottom-color: var(--nfs-amber);
  background: rgba(27, 36, 56, .7);
}

.tabpanel {
  padding: 24px 0;
  animation: nfsTabIn .18s var(--ease);
}

@keyframes nfsTabIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* 数据表格 */
.data-table {
  font-size: 14px;
  border-top: 1px solid var(--line-strong);
}

.data-table th {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-align: left;
  color: var(--nfs-mist);
  white-space: nowrap;
}

.data-table td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  color: var(--nfs-white);
  vertical-align: top;
}

.data-table tbody tr:nth-child(even) { background: rgba(27, 36, 56, .42); }
.data-table tbody tr:hover { background: rgba(27, 36, 56, .8); }

.data-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--nfs-amber);
}

.data-table .num--cyan { color: var(--nfs-cyan); }
.data-table .num--danger { color: var(--nfs-red); }

/* 指标块 */
.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px;
  border-left: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(27, 36, 56, .55), rgba(27, 36, 56, 0));
}

.stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--nfs-amber);
}

.stat-value--cyan { color: var(--nfs-cyan); }

.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--nfs-mist);
}

/* 图片容器 */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--nfs-charcoal);
  border: 1px solid var(--line);
}

.media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(.78) saturate(.88);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(5, 8, 15, 0) 34%, rgba(5, 8, 15, .86) 100%),
    repeating-linear-gradient(0deg, rgba(53, 224, 200, .07) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(53, 224, 200, .05) 0 1px, transparent 1px 44px);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--nfs-mist);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gutter);
}

/* 横向滑动带 */
.scroll-x {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: rgba(53, 224, 200, .4) rgba(27, 36, 56, .6);
}

.scroll-x > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
  min-width: 240px;
}

.scroll-x::-webkit-scrollbar { height: 6px; }
.scroll-x::-webkit-scrollbar-track { background: rgba(27, 36, 56, .6); }
.scroll-x::-webkit-scrollbar-thumb { background: rgba(53, 224, 200, .45); }

.scroll-hint {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--nfs-mist);
}

/* 雷达加载环 */
.radar-loader {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(53, 224, 200, .35);
}

.radar-loader::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid transparent;
  border-top-color: var(--nfs-cyan);
  animation: nfsSpin 1.1s linear infinite;
}

.radar-loader::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  background: var(--nfs-cyan);
  opacity: .5;
  animation: nfsBlip 1.1s ease-out infinite;
}

@keyframes nfsSpin { to { transform: rotate(360deg); } }
@keyframes nfsBlip {
  0% { transform: scale(.5); opacity: .7; }
  100% { transform: scale(1.1); opacity: .1; }
}

/* 进入视口显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .62s var(--ease), transform .62s var(--ease);
}

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

/* ---------- 9. 响应式 ---------- */
@media (max-width: 1279px) {
  .header-status { display: none; }
}

@media (max-width: 1099px) {
  .nav-index a { padding: 0 9px; font-size: 13.5px; }
  .nav-index a::after { left: 9px; right: 9px; }
  .nav-idx { display: none; }
  .header-actions .btn { padding: 9px 13px; font-size: 13px; }
}

@media (max-width: 899px) {
  .header-shell {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
  }

  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    justify-self: stretch;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 6px var(--gutter) 18px;
    background: rgba(5, 8, 15, .985);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line-strong);
  }

  .site-header[data-open] .primary-nav,
  .primary-nav[data-open] {
    display: block;
  }

  .nav-index {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .nav-index a {
    height: 50px;
    padding: 0 2px;
    justify-content: space-between;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
  }

  .nav-index a::after { display: none; }
  .nav-idx { display: block; order: 2; }

  .nav-index a[aria-current="page"] {
    color: var(--nfs-amber);
    box-shadow: inset 2px 0 0 var(--nfs-amber);
    padding-left: 12px;
  }

  .section { padding: 56px 0; }
  .section--tight { padding: 40px 0; }
}

@media (max-width: 768px) {
  .footer-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }

  .footer-meta { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .footer-shell { padding-top: 48px; }
  .grid-12 { gap: 20px; }
}

@media (max-width: 600px) {
  :root { --gutter: 16px; --header-h: 62px; }

  body { font-size: 16px; }
  .header-actions .btn-primary { display: none; }
  .brand-code { display: none; }
  .brand-name { font-size: 15px; }

  .footer-cols { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .contact-label { flex: 0 0 52px; }
  .section { padding: 44px 0; }
}

/* ---------- 10. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

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

  .rail-fill { transition: none !important; }
}