/* ==========================================================================
   NG娱乐中心 · /assets/site.css
   共享外壳：重置、设计令牌、头部、页脚、通用组件
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; }
a { color: inherit; }
[hidden] { display: none !important; }

:root {
  --ink: #070C1C;
  --panel: #101A38;
  --line: #22315E;
  --cyan: #35E6D0;
  --violet: #9A6BFF;
  --amber: #FFB43A;
  --text: #E8EEFF;
  --muted: #97A5CE;
  --ok: #46E0A0;

  --rail-w: 88px;
  --shell: 1280px;
  --gutter: clamp(1rem, 4vw, 3.25rem);

  --font-display: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "HarmonyOS Sans SC", "Source Han Sans SC", ui-monospace, SFMono-Regular, Menlo, monospace;

  --hard-shadow: 7px 7px 0 rgba(3, 7, 20, 0.78);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* --------------------------------------------------------------------------
   基础排版
   -------------------------------------------------------------------------- */

html, body { min-height: 100%; }

body {
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 78% at 84% -12%, rgba(154, 107, 255, 0.16), transparent 62%),
    radial-gradient(90% 60% at -10% 8%, rgba(53, 230, 208, 0.09), transparent 58%);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(53, 230, 208, 0.035) 0,
    rgba(53, 230, 208, 0.035) 1px,
    transparent 1px,
    transparent 4px
  );
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -0.015em;
}

p, li { text-wrap: pretty; }

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

::selection { background: var(--cyan); color: #04101c; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.site-header, .site-footer, main, .container { position: relative; z-index: 1; }

/* --------------------------------------------------------------------------
   跳转链接
   -------------------------------------------------------------------------- */

.skip-link {
  position: fixed;
  top: 0.6rem;
  left: 0.6rem;
  z-index: 200;
  transform: translateY(-180%);
  padding: 0.7rem 1.1rem;
  background: var(--cyan);
  color: #04101c;
  border: 2px solid #04101c;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  transition: transform 0.2s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* --------------------------------------------------------------------------
   品牌轨道
   -------------------------------------------------------------------------- */

.brand-rail { display: none; }

.rail__mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.rail__mark-latin {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.rail__mark-cn {
  writing-mode: vertical-rl;
  font-size: 0.8rem;
  letter-spacing: 0.34em;
  color: var(--text);
}

.rail__divider {
  width: 22px;
  height: 2px;
  background: var(--line);
}

.rail__region {
  writing-mode: vertical-rl;
  font-size: 0.66rem;
  letter-spacing: 0.28em;
  color: var(--muted);
}

.rail__track {
  position: relative;
  width: 2px;
  flex: 1 1 auto;
  min-height: 90px;
  margin-top: 0.4rem;
  background: var(--line);
}

.rail__track::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  transform: scaleY(var(--progress, 0));
  transform-origin: top center;
  transition: transform 0.18s linear;
}

/* --------------------------------------------------------------------------
   站点头部
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(7, 12, 28, 0.97);
  border-bottom: 2px solid var(--line);
}

.header__upper {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2.4vw, 2rem);
  padding: 0.62rem var(--gutter);
  border-bottom: 1px solid var(--line);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.header__brand {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-right: auto;
  text-decoration: none;
}

.header__brand-name {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.12rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.header__brand-sub {
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.header__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.header__dot {
  width: 6px;
  height: 6px;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
}

.header__region {
  white-space: nowrap;
  color: var(--text);
  border-left: 1px solid var(--line);
  padding-left: clamp(0.8rem, 2vw, 1.6rem);
}

.header__cta { flex: 0 0 auto; }

.header__lower {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 var(--gutter);
}

.header__stamp {
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.site-nav { flex: 1 1 auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.4rem, 2vw, 1.7rem);
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.95rem 0.15rem;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.nav-link::before {
  content: attr(data-index);
  margin-right: 0.42rem;
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: var(--line);
  vertical-align: 0.14em;
  transition: color 0.18s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}

.nav-link:hover { color: var(--text); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--cyan); }
.nav-link[aria-current="page"]::before { color: var(--cyan); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.85rem;
  border: 2px solid var(--line);
  color: var(--text);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   站点页脚
   -------------------------------------------------------------------------- */

.site-footer {
  margin-top: clamp(2.4rem, 6vw, 4.5rem);
  padding: clamp(2.2rem, 5vw, 3.6rem) 0 1.4rem;
  border-top: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 26, 56, 0.85), rgba(7, 12, 28, 1) 68%);
  font-size: 0.84rem;
}

.footer__inner { display: grid; gap: clamp(1.6rem, 4vw, 2.6rem); }

.footer__top { display: grid; gap: clamp(1.4rem, 3vw, 2.6rem); }

.footer__brand {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1;
  color: var(--text);
}

.footer__tagline {
  margin-top: 0.75rem;
  max-width: 34ch;
  color: var(--muted);
}

.footer__brand-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.footer__brand-dot {
  width: 6px;
  height: 6px;
  background: var(--amber);
}

.footer__nav {
  display: grid;
  gap: clamp(1.1rem, 2.6vw, 1.8rem);
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.footer__col-title {
  margin-bottom: 0.7rem;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.footer__list { display: grid; gap: 0.45rem; }

.footer__link {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.footer__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.footer__meta {
  margin-top: 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.footer__contact {
  display: grid;
  gap: 0.55rem;
  padding: clamp(1rem, 2.2vw, 1.5rem);
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}

.footer__contact-title {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.footer__contact-line { font-size: 0.82rem; color: var(--text); }

.footer__contact-key {
  display: inline-block;
  min-width: 4.4em;
  color: var(--muted);
  letter-spacing: 0.12em;
}

.footer__note {
  max-width: 70ch;
  padding-left: 0.75rem;
  border-left: 3px solid var(--amber);
  font-size: 0.74rem;
  color: var(--muted);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 1.6rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.footer__legal { display: grid; gap: 0.3rem; }

.footer__legal-line {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.3rem;
  font-size: 0.74rem;
}

/* --------------------------------------------------------------------------
   通用布局
   -------------------------------------------------------------------------- */

.container {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.grid { display: grid; gap: clamp(1rem, 2.4vw, 2rem); }
.grid--halves { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--thirds { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1fr); }

.section { padding-block: clamp(2.4rem, 6vw, 4.6rem); }
.section + .section { border-top: 1px solid var(--line); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  padding-bottom: 1rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
  border-bottom: 2px solid var(--line);
  box-shadow: 0 10px 26px -20px rgba(53, 230, 208, 0.75);
}

.section__num {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
}

.section__lede {
  max-width: 64ch;
  color: var(--muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.divider {
  height: 2px;
  border: 0;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 18px, transparent 18px 30px);
}

.tickline {
  height: 14px;
  border-bottom: 2px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 14px);
}

/* --------------------------------------------------------------------------
   卡片与面板
   -------------------------------------------------------------------------- */

.panel {
  padding: clamp(1.1rem, 2.4vw, 1.9rem);
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(1rem, 2.2vw, 1.6rem);
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: 5px 5px 0 rgba(3, 7, 20, 0.7);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
}

.card:hover {
  transform: translate(-2px, -2px);
  border-color: var(--cyan);
  box-shadow: 8px 8px 0 rgba(3, 7, 20, 0.8);
}

.card__index {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.card__title {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.2;
}

.card__body { color: var(--muted); font-size: 0.88rem; }

.card__foot {
  margin-top: auto;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   按钮与标签
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.2rem;
  border: 2px solid var(--line);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.btn:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 rgba(3, 7, 20, 0.85); }

.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04101c;
}

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

.btn--warn { border-color: var(--amber); color: var(--amber); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.6rem;
  border: 1px solid currentColor;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  line-height: 1.4;
}

.tag--cyan { color: var(--cyan); }
.tag--violet { color: var(--violet); }
.tag--amber { color: var(--amber); }
.tag--green { color: var(--ok); }

/* --------------------------------------------------------------------------
   面包屑与索引
   -------------------------------------------------------------------------- */

.breadcrumbs {
  padding-block: 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 0.4rem 0.6rem; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs li + li::before { content: "/"; margin-right: 0.6rem; color: var(--line); }

.index-list { display: grid; gap: 0.55rem; }

.index-item {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--muted);
}

.index-item a { color: var(--text); text-decoration: none; }
.index-item a:hover { color: var(--cyan); }

/* --------------------------------------------------------------------------
   筛选、抽屉、横向记录带
   -------------------------------------------------------------------------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border: 2px dashed var(--line);
  background: rgba(16, 26, 56, 0.5);
}

.filter-btn {
  padding: 0.5rem 0.85rem;
  border: 2px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.filter-btn:hover { color: var(--text); border-color: var(--cyan); }

.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04101c;
}

.filter-status {
  margin-left: auto;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.drawer {
  border: 2px solid var(--line);
  background: var(--panel);
}

.drawer + .drawer { margin-top: -2px; }

.drawer > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  font-size: 0.92rem;
  cursor: pointer;
  list-style: none;
  transition: color 0.18s var(--ease);
}

.drawer > summary::-webkit-details-marker { display: none; }
.drawer > summary:hover { color: var(--cyan); }

.drawer > summary::after {
  content: "＋";
  color: var(--cyan);
  font-size: 0.9rem;
}

.drawer[open] > summary::after { content: "－"; }

.drawer__body {
  padding: 1rem 1.15rem 1.25rem;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

.rail-scroll {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 76%);
  gap: 1rem;
  padding: 0.35rem 0.35rem 1.1rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-color: var(--line) transparent;
  scrollbar-width: thin;
}

.rail-scroll > * { scroll-snap-align: start; }

.rail-scroll--wide { grid-auto-columns: minmax(300px, 88%); }

.rail-scroll::-webkit-scrollbar { height: 6px; }
.rail-scroll::-webkit-scrollbar-track { background: transparent; }
.rail-scroll::-webkit-scrollbar-thumb { background: var(--line); }

.continue-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border: 2px solid var(--line);
  border-left: 6px solid var(--cyan);
  background-image: linear-gradient(90deg, rgba(53, 230, 208, 0.1), transparent 58%);
  background-color: var(--panel);
}

/* --------------------------------------------------------------------------
   图片容器（页面阶段放置 img 或占位）
   -------------------------------------------------------------------------- */

.media-frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--line);
  background-image: linear-gradient(140deg, rgba(53, 230, 208, 0.14), rgba(154, 107, 255, 0.14) 46%, rgba(7, 12, 28, 0.94));
  background-color: var(--panel);
  box-shadow: var(--hard-shadow);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(232, 238, 255, 0.05) 0,
    rgba(232, 238, 255, 0.05) 1px,
    transparent 1px,
    transparent 5px
  );
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 0.6rem 0.85rem;
  background: rgba(7, 12, 28, 0.86);
  border-top: 1px solid var(--line);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.media-frame--wide { aspect-ratio: 16 / 7; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

/* --------------------------------------------------------------------------
   数字与数据块
   -------------------------------------------------------------------------- */

.num { font-variant-numeric: tabular-nums; }
.num-cyan { color: var(--cyan); font-variant-numeric: tabular-nums; }
.num-amber { color: var(--amber); font-variant-numeric: tabular-nums; }

.stat {
  padding-left: 0.85rem;
  border-left: 3px solid var(--cyan);
}

.stat__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.1;
}

.stat__unit {
  margin-left: 0.28rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.stat__label {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   动效
   -------------------------------------------------------------------------- */

.has-js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

.has-js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.scan-edge { position: relative; overflow: hidden; }

.scan-edge::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 42%;
  background: linear-gradient(180deg, transparent, rgba(53, 230, 208, 0.16), transparent);
  animation: scan-sweep 6s linear infinite;
  pointer-events: none;
}

@keyframes scan-sweep {
  0% { transform: translateY(-110%); }
  100% { transform: translateY(260%); }
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1023px) {
  .header__status,
  .header__region { display: none; }

  .header__upper { justify-content: space-between; }

  .header__cta {
    padding: 0.5rem 0.7rem;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - 7rem);
    overflow-y: auto;
    padding: 0.4rem var(--gutter) 1.5rem;
    background: rgba(7, 12, 28, 0.99);
    border-bottom: 2px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0.18s var(--ease);
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 0.95rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    padding-left: 0.85rem;
    border-left: 3px solid var(--cyan);
  }

  .header__stamp { font-size: 0.6rem; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }

  .header__brand-sub { display: none; }

  .grid--split { gap: 1.2rem; }

  .rail-scroll { grid-auto-columns: minmax(230px, 86%); }

  .filter-status { margin-left: 0; width: 100%; }
}

@media (min-width: 720px) {
  .footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand-block { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .brand-rail {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 90;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    width: var(--rail-w);
    padding: 1.7rem 0 1.4rem;
    border-right: 2px solid var(--line);
    background: linear-gradient(180deg, rgba(16, 26, 56, 0.94), rgba(7, 12, 28, 0.99));
  }

  .footer__top { grid-template-columns: minmax(240px, 1.25fr) 3fr; }
  .footer__brand-block { grid-column: auto; }

  .grid--split { grid-template-columns: minmax(0, 62fr) minmax(0, 38fr); }
}

@media (min-width: 1280px) {
  .rail-scroll { grid-auto-columns: minmax(280px, 30%); }
  .rail-scroll--wide { grid-auto-columns: minmax(320px, 42%); }
}

/* --------------------------------------------------------------------------
   减弱动效
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .has-js .reveal {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .btn:hover { transform: none; }
}