/* ==========================================================================
   新利赛场 /assets/site.css — 共享外壳样式
   顺序：reset → 变量 → 基础排版 → 通用组件 → 头部 → 页脚 → 固定条 → 响应式
   ========================================================================== */

/* ---------- 1. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}
body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: inherit; text-decoration: none; }
img, svg, video, picture { display: block; max-width: 100%; }
table { border-collapse: collapse; width: 100%; }
main { display: block; }
#main-content { outline: none; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-000: #05070A;
  --ink-100: #0D1319;
  --ink-200: #111A22;
  --line-200: #1E2A33;
  --text-000: #F4F7F9;
  --text-400: #8C9CA8;
  --signal-500: #2BFFA3;
  --signal-600: #5CFFB8;
  --data-500: #3C8CFF;
  --warn-500: #FF7A2F;
  --rollback-400: #41D3C6;

  --font-display: "Archivo", "Inter Tight", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-text: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --page-x: 72px;
  --max-w: 1440px;
  --gap: 24px;
  --r: 2px;
  --fixed-bar-h: 44px;
  --dur: .18s;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  padding-bottom: var(--fixed-bar-h);
  background: var(--ink-000);
  color: var(--text-000);
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
::selection { background: var(--signal-500); color: var(--ink-000); }

:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: 2px;
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--page-x);
}

.display {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(56px, 10vw, 128px);
  line-height: .98;
  letter-spacing: -.02em;
}
.h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(36px, 5.2vw, 72px);
  line-height: 1.04;
  letter-spacing: -.015em;
}
.h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.25;
  letter-spacing: -.01em;
}
.h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.35;
}
.lede {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.72;
  color: var(--text-400);
  max-width: 40ch;
}
.mono { font-family: var(--font-mono); }
.muted { color: var(--text-400); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-400);
  text-transform: uppercase;
}
.eyebrow-code { color: var(--signal-500); }
.eyebrow::after {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--line-200);
  flex: 0 0 auto;
}
.index-code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-400);
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-180%);
  background: var(--signal-500);
  color: var(--ink-000);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 10px 18px;
  border-radius: var(--r);
  transition: transform .16s var(--ease);
}
.skip-link:focus { transform: none; }

/* ---------- 4. 通用组件 ---------- */
.section { position: relative; padding-block: clamp(56px, 8vw, 112px); }
.section--tight { padding-block: clamp(32px, 4.5vw, 60px); }
.section--panel { background: var(--ink-100); }
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(20px, 3vw, 48px);
  align-items: end;
  margin-bottom: clamp(28px, 4vw, 56px);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.stack { display: flex; flex-direction: column; gap: var(--stack-gap, 16px); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

.divider { height: 1px; border: 0; background: var(--line-200); }

.grid-veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(30, 42, 51, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 42, 51, .55) 1px, transparent 1px);
  background-size: var(--grid-step, 96px) var(--grid-step, 96px);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 76%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 76%, transparent);
}

.edge-slant {
  background: var(--ink-100);
  clip-path: polygon(0 16px, 100% 0, 100% 100%, 0 calc(100% - 16px));
}
.pulse-track {
  position: relative;
  height: 64px;
  overflow: hidden;
}
.pulse-track::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--signal-500) 16%, var(--data-500) 54%, transparent 94%);
  opacity: .75;
}
.pulse-track::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -12%;
  width: 12%;
  height: 1px;
  background: var(--signal-500);
  box-shadow: 0 0 16px 2px rgba(43, 255, 163, .65);
  animation: pulse-sweep 4s linear infinite;
}
@keyframes pulse-sweep {
  0%   { left: -12%; opacity: 0; }
  12%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { left: 112%; opacity: 0; }
}

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  padding: 13px 26px;
  font-family: var(--font-text);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1;
  border-radius: var(--r);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.btn--signal {
  z-index: 1;
  border: 1px solid transparent;
  color: #04120C;
  padding: 14px 28px;
}
.btn--signal::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--signal-500);
  clip-path: polygon(11px 0, 100% 0, 100% calc(100% - 11px), calc(100% - 11px) 100%, 0 100%, 0 11px);
  transition: background-color var(--dur) var(--ease);
}
.btn--signal:hover::before { background: var(--signal-600); }
.btn--line {
  color: var(--text-000);
  border: 1px solid var(--line-200);
  background: rgba(13, 19, 25, .6);
}
.btn--line:hover { border-color: var(--signal-500); color: var(--signal-500); }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  padding: 5px 10px;
  border: 1px solid currentColor;
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  line-height: 1.4;
  white-space: nowrap;
}
.tag::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  background: currentColor;
}
.tag--fixed { color: var(--signal-500); }
.tag--located { color: var(--data-500); }
.tag--pending { color: var(--warn-500); }
.tag--watch { color: var(--rollback-400); }

/* 筛选 chip */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-200);
  border-radius: 999px;
  background: rgba(13, 19, 25, .6);
  color: var(--text-400);
  font-size: 13px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.chip:hover { color: var(--text-000); border-color: var(--data-500); }
.chip[aria-pressed="true"] {
  color: var(--text-000);
  border-color: var(--data-500);
  background: rgba(60, 140, 255, .14);
}
.chip-count { font-family: var(--font-mono); font-size: 11px; color: var(--text-400); }

/* 标签页 */
.tabs {
  display: flex;
  gap: 4px;
  width: fit-content;
  max-width: 100%;
  padding: 6px;
  overflow-x: auto;
  border: 1px solid var(--line-200);
  border-radius: 999px;
  background: rgba(13, 19, 25, .75);
}
.tab {
  padding: 10px 18px;
  border-radius: 999px;
  color: var(--text-400);
  font-size: 14px;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.tab:hover { color: var(--text-000); }
.tab[aria-selected="true"] { background: var(--signal-500); color: #04120C; font-weight: 500; }
.tabpanel { padding-top: 24px; }
.tabpanel[hidden] { display: none; }

/* 面板 */
.panel {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line-200);
  border-radius: var(--r);
  background: var(--ink-100);
}
.panel--float {
  background: rgba(17, 26, 34, .92);
  box-shadow: 0 28px 64px rgba(0, 0, 0, .55);
}
.corner-marks::before,
.corner-marks::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid var(--signal-500);
  pointer-events: none;
}
.corner-marks::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.corner-marks::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

/* 读数 */
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 48px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--text-000);
}
.stat-value em {
  font-style: normal;
  font-size: .42em;
  letter-spacing: .08em;
  color: var(--text-400);
  margin-left: .08em;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-400);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--text-400);
}
.breadcrumb a:hover { color: var(--signal-500); }
.breadcrumb .sep { opacity: .45; }

/* 正文长文 */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: #D6E0E7;
}
.prose > * + * { margin-top: 1.05em; }
.prose h2 { margin-top: 2.2em; color: var(--text-000); }
.prose h3 { margin-top: 1.8em; color: var(--text-000); }
.prose a { color: var(--signal-500); text-decoration: underline; text-underline-offset: 3px; }
.prose ul { list-style: disc; padding-left: 1.25em; }
.prose ol { list-style: decimal; padding-left: 1.5em; }
.prose li + li { margin-top: .5em; }
.prose li::marker { color: var(--signal-500); }
.prose strong { color: var(--text-000); }

/* 图像容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-200);
  border-radius: var(--r);
  background:
    linear-gradient(135deg, rgba(60, 140, 255, .16), rgba(43, 255, 163, .07) 60%, transparent),
    var(--ink-100);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(112%) contrast(108%) brightness(.86);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(to bottom, rgba(255, 255, 255, .04) 0 1px, transparent 1px 4px);
}
.media-frame__cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--text-000);
  text-shadow: 0 1px 8px rgba(0, 0, 0, .8);
}

/* 进入显现 */
[data-motion="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
[data-motion="on"] [data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}

/* ---------- 5. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(5, 7, 10, .95), rgba(5, 7, 10, .74));
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--line-200);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.2vw, 18px);
  padding-top: 14px;
  padding-bottom: 13px;
  transition: padding .22s var(--ease);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 8px 18px 8px 10px;
  border: 1px solid var(--line-200);
  border-radius: 999px;
  background: rgba(13, 19, 25, .8);
  transition: border-color var(--dur) var(--ease);
}
.brand:hover { border-color: var(--signal-500); }
.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  background: rgba(43, 255, 163, .1);
  border: 1px solid var(--line-200);
}
.brand-mark::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 8px; height: 8px;
  border-top: 1px solid var(--signal-500);
  border-left: 1px solid var(--signal-500);
}
.brand-wave {
  display: block;
  width: 12px;
  height: 2px;
  background: var(--signal-500);
  box-shadow: 0 -4px 0 rgba(43, 255, 163, .42), 0 4px 0 rgba(43, 255, 163, .42);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: .06em;
  color: var(--text-000);
}
.brand-tag {
  margin-top: 3px;
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--text-400);
}

.nav-capsule {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
  padding: 6px;
  border: 1px solid var(--line-200);
  border-radius: 999px;
  background: rgba(13, 19, 25, .8);
}
.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 100%;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px clamp(10px, 1.1vw, 16px);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.2;
  color: var(--text-400);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.nav-link:hover { color: var(--text-000); background: rgba(244, 247, 249, .05); }
.nav-link[aria-current="page"] {
  color: var(--signal-500);
  background: rgba(43, 255, 163, .1);
  box-shadow: inset 0 0 0 1px rgba(43, 255, 163, .55);
}
.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--text-400);
  opacity: .7;
}
.nav-link[aria-current="page"] .nav-index { color: var(--signal-500); opacity: 1; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line-200);
  border-radius: 999px;
  background: rgba(13, 19, 25, .8);
  color: var(--text-000);
  font-size: 13px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--signal-500); }
.nav-toggle-bars { display: flex; flex-direction: column; gap: 4px; width: 16px; }
.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--signal-500);
  transition: transform var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child { transform: translateY(2.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child { transform: translateY(-2.75px) rotate(-45deg); }

.status-strip {
  overflow: hidden;
  max-height: 60px;
  border-top: 1px solid var(--line-200);
  background: rgba(13, 19, 25, .6);
  transition: max-height .26s var(--ease), opacity .2s var(--ease), border-color .2s var(--ease);
}
.status-strip-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--text-400);
}
.status-led {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border-radius: 50%;
  background: var(--signal-500);
  animation: led-pulse 2.4s ease-out infinite;
}
@keyframes led-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(43, 255, 163, .55); }
  70%  { box-shadow: 0 0 0 7px rgba(43, 255, 163, 0); }
  100% { box-shadow: 0 0 0 0 rgba(43, 255, 163, 0); }
}
.status-text { margin: 0; }
.status-text b { color: var(--text-000); font-weight: 600; }
.status-stamp { margin-left: auto; opacity: .7; white-space: nowrap; }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--signal-500), var(--data-500));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.site-header[data-scrolled="true"] { background: rgba(5, 7, 10, .97); }
.site-header[data-scrolled="true"] .header-inner { padding-top: 8px; padding-bottom: 8px; }
.site-header[data-scrolled="true"] .brand-tag { display: none; }
.site-header[data-scrolled="true"] .status-strip {
  max-height: 0;
  opacity: 0;
  border-top-color: transparent;
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 128px);
  padding-top: clamp(48px, 6vw, 88px);
  padding-bottom: clamp(32px, 4vw, 56px);
  background: var(--ink-000);
  border-top: 1px solid var(--line-200);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(38%, 420px);
  height: 1px;
  background: linear-gradient(90deg, var(--signal-500), transparent);
  opacity: .7;
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(280px, 1.1fr) minmax(0, 1.6fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.footer-logo-mark {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  border: 1px solid var(--signal-500);
  background: rgba(43, 255, 163, .1);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}
.footer-logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: .08em;
}
.footer-line {
  margin-top: 18px;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
}
.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.copy-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line-200);
  border-radius: var(--r);
  background: rgba(13, 19, 25, .6);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  text-align: left;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.copy-chip:hover { border-color: var(--signal-500); }
.copy-chip__key { font-size: 10px; letter-spacing: .14em; color: var(--text-400); }
.copy-chip__val { color: var(--text-000); }
.copy-chip[data-copied="true"] { border-color: var(--signal-500); }
.copy-chip[data-copied="true"] .copy-chip__key::after {
  content: " · 已复制";
  color: var(--signal-500);
}
.copy-status {
  min-height: 1.4em;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--signal-500);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}
.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--text-000);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-200);
}
.footer-links { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-400);
  transition: color var(--dur) var(--ease);
}
.footer-links a:hover { color: var(--signal-500); }

.footer-bottom {
  margin-top: clamp(36px, 5vw, 64px);
  padding-top: 22px;
  border-top: 1px solid var(--line-200);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  align-items: baseline;
}
.footer-service {
  flex: 1 1 420px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-400);
}
.footer-address {
  flex: 1 1 320px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--text-400);
}

/* ---------- 7. 固定底部条 ---------- */
.fixed-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  height: var(--fixed-bar-h);
  background: rgba(5, 7, 10, .95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line-200);
}
.fixed-bar::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, var(--signal-500), transparent 42%);
  opacity: .55;
}
.fixed-bar-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 100%;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--text-400);
}
.fixed-bar-legal { color: var(--text-000); }
.fixed-bar-year { white-space: nowrap; }
.fixed-bar-region { margin-left: auto; white-space: nowrap; }

/* ---------- 8. 响应式 ---------- */
@media (max-width: 1200px) {
  :root { --page-x: 48px; }
  .header-cta { display: none; }
  .brand-tag { display: none; }
}
@media (max-width: 1000px) {
  .nav-toggle { display: inline-flex; }
  .nav-capsule {
    position: absolute;
    top: calc(100% + 10px);
    left: var(--page-x);
    right: var(--page-x);
    display: block;
    padding: 10px;
    border-radius: 14px;
    background: rgba(8, 11, 15, .98);
    box-shadow: 0 30px 70px rgba(0, 0, 0, .72);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
    max-height: calc(100dvh - 180px);
    overflow-y: auto;
    z-index: 5;
  }
  .nav-capsule[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-item { width: 100%; }
  .nav-link {
    justify-content: flex-start;
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 15px;
  }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .section-head { grid-template-columns: minmax(0, 1fr); align-items: start; }
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  :root { --page-x: 20px; --gap: 16px; }
  body { font-size: 16px; }
  .header-inner { padding-top: 10px; padding-bottom: 10px; }
  .status-strip-inner { gap: 10px; }
  .status-stamp { display: none; }
  .fixed-bar-inner { gap: 12px; font-size: 10px; }
  .fixed-bar-year { display: none; }
  .panel { padding: 20px; }
  .prose { font-size: 16px; }
}
@media (max-width: 560px) {
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .footer-contact { flex-direction: column; align-items: stretch; }
  .copy-chip { justify-content: space-between; }
}

/* ---------- 9. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .status-led { animation: none; }
  .pulse-track::after { animation: none; opacity: 0; }
  [data-motion="on"] [data-reveal] { opacity: 1; transform: none; }
}