/* =========================================================
   星空体育官网 · 共享样式 /assets/site.css
   深空底 + 轨道线 + 奶油纸层 的画册式数据站
   ========================================================= */

/* ---------- 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, h6, p, ul, ol, li, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --gx-void: #060B18;
  --gx-nebula: #0E1A33;
  --gx-paper: #F2ECDF;
  --gx-ink: #17120E;
  --gx-cyan: #35E0D0;
  --gx-flame: #FF6B2C;
  --gx-red: #C0341F;
  --gx-silver: #C9D3E3;
  --gx-slate: #7A8699;

  --gx-line: rgba(201, 211, 227, .16);
  --gx-line-strong: rgba(201, 211, 227, .34);
  --gx-glass: rgba(14, 26, 51, .58);

  --gx-shell: 1280px;
  --gx-gutter: clamp(18px, 4vw, 48px);
  --gx-header-h: 78px;
  --gx-radius: 3px;

  --gx-font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --gx-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--gx-font);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: .01em;
  color: var(--gx-silver);
  background-color: var(--gx-void);
  background-image:
    radial-gradient(circle 1.6px at 14% 12%, rgba(201, 211, 227, .55), transparent),
    radial-gradient(circle 1.5px at 33% 71%, rgba(53, 224, 208, .50), transparent),
    radial-gradient(circle 2.1px at 78% 22%, rgba(255, 107, 44, .46), transparent),
    radial-gradient(circle 1.5px at 62% 86%, rgba(201, 211, 227, .40), transparent),
    radial-gradient(circle 1.6px at 89% 57%, rgba(201, 211, 227, .34), transparent),
    radial-gradient(circle 1.4px at 46% 33%, rgba(201, 211, 227, .30), transparent),
    radial-gradient(ellipse 70% 55% at 84% -8%, rgba(53, 224, 208, .10), transparent 70%),
    radial-gradient(ellipse 62% 48% at 4% 108%, rgba(255, 107, 44, .07), transparent 70%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.24;
  color: #FFFFFF;
}

.gx-display {
  font-size: clamp(40px, 7vw, 88px);
  line-height: 1.06;
  letter-spacing: .1em;
  font-weight: 700;
  color: #FFFFFF;
}

.gx-h2 {
  font-size: clamp(28px, 3.4vw, 46px);
  letter-spacing: .08em;
}

.gx-h3 {
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: .06em;
}

.gx-lede {
  font-size: clamp(17px, 1.3vw, 19px);
  line-height: 1.9;
  color: var(--gx-silver);
  max-width: 62ch;
}

.gx-body {
  font-size: 17px;
  line-height: 1.85;
  max-width: 68ch;
}

.gx-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--gx-slate);
  max-width: 62ch;
}

.gx-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--gx-cyan);
  text-transform: uppercase;
}
.gx-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: .7;
}

.gx-num {
  font-family: var(--gx-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.gx-annot {
  position: absolute;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--gx-slate);
  white-space: nowrap;
}

/* ---------- 4. 容器与网格 ---------- */
.gx-shell {
  width: min(var(--gx-shell), 100% - (var(--gx-gutter) * 2));
  margin-inline: auto;
}

.gx-section {
  position: relative;
  padding-block: clamp(56px, 8vw, 120px);
}
.gx-section--tight { padding-block: clamp(32px, 4.5vw, 64px); }
.gx-section--paper {
  background: var(--gx-paper);
  color: var(--gx-ink);
}
.gx-section--paper h1,
.gx-section--paper h2,
.gx-section--paper h3,
.gx-section--paper h4 { color: var(--gx-ink); }
.gx-section--paper .gx-lede,
.gx-section--paper .gx-body { color: #33291F; }
.gx-section--paper .gx-note { color: #6B5C4C; }
.gx-section--paper .gx-eyebrow { color: var(--gx-red); }

.gx-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(20px, 2.6vw, 44px);
}
.gx-span-3 { grid-column: span 3; }
.gx-span-4 { grid-column: span 4; }
.gx-span-5 { grid-column: span 5; }
.gx-span-6 { grid-column: span 6; }
.gx-span-7 { grid-column: span 7; }
.gx-span-8 { grid-column: span 8; }
.gx-span-9 { grid-column: span 9; }
.gx-span-12 { grid-column: span 12; }

/* ---------- 5. 材质层 ---------- */
.gx-paper {
  background: var(--gx-paper);
  color: var(--gx-ink);
  border-radius: var(--gx-radius);
  box-shadow: 0 20px 44px rgba(0, 0, 0, .5);
  padding: clamp(24px, 3.4vw, 52px);
}
.gx-paper a { color: var(--gx-red); }

.gx-glass {
  background: var(--gx-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--gx-line);
  border-radius: var(--gx-radius);
}

.gx-slice {
  position: relative;
  overflow: hidden;
  border-radius: var(--gx-radius);
}
.gx-slice::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(112deg, rgba(53, 224, 208, .14) 0%, transparent 42%);
  clip-path: polygon(0 0, 100% 0, 100% 78%, 0 100%);
}

.gx-rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--gx-line-strong) 18%, var(--gx-line-strong) 82%, transparent);
}

/* ---------- 6. 按钮 ---------- */
.gx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .74em 1.5em;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.2;
  white-space: nowrap;
  transition: transform .25s ease, background-color .25s ease, border-color .25s ease, color .25s ease, box-shadow .25s ease;
}
.gx-btn:hover { transform: translateY(-2px); }

.gx-btn--primary {
  background: var(--gx-cyan);
  color: #04121A;
  box-shadow: 0 8px 22px rgba(53, 224, 208, .22);
}
.gx-btn--primary:hover { background: #57EDDE; }

.gx-btn--flame {
  background: var(--gx-flame);
  color: #1A0A02;
  box-shadow: 0 8px 22px rgba(255, 107, 44, .22);
}
.gx-btn--flame:hover { background: #FF8351; }

.gx-btn--ghost {
  background: rgba(201, 211, 227, .05);
  border-color: var(--gx-line-strong);
  color: var(--gx-silver);
}
.gx-btn--ghost:hover {
  border-color: var(--gx-cyan);
  color: var(--gx-cyan);
  background: rgba(53, 224, 208, .08);
}

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

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

/* ---------- 7. 标签 / 数据 / 面包屑 ---------- */
.gx-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .18em;
  border: 1px solid var(--gx-line-strong);
  color: var(--gx-silver);
}
.gx-tag--cyan { border-color: rgba(53, 224, 208, .5); color: var(--gx-cyan); }
.gx-tag--flame { border-color: rgba(255, 107, 44, .5); color: var(--gx-flame); }
.gx-tag--red {
  border-color: rgba(192, 52, 31, .55);
  color: var(--gx-red);
  background: rgba(192, 52, 31, .08);
}

.gx-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-left: 1px solid var(--gx-line-strong);
}
.gx-stat__value {
  font-family: var(--gx-mono);
  font-size: clamp(26px, 3vw, 40px);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  color: var(--gx-cyan);
  letter-spacing: .02em;
}
.gx-stat__label {
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--gx-slate);
}

.gx-crumb { padding-block: 22px; }
.gx-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gx-slate);
}
.gx-crumb__item + .gx-crumb__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--gx-line-strong);
}
.gx-crumb__item a { color: var(--gx-slate); }
.gx-crumb__item a:hover { color: var(--gx-cyan); }
.gx-crumb__item[aria-current="page"] { color: var(--gx-silver); }

/* ---------- 8. 图片容器 ---------- */
.gx-figure {
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--gx-line);
  border-radius: var(--gx-radius);
  background:
    radial-gradient(120% 92% at 78% 10%, rgba(53, 224, 208, .16), transparent 62%),
    radial-gradient(84% 72% at 10% 90%, rgba(255, 107, 44, .11), transparent 60%),
    linear-gradient(156deg, #0B1730, #060B18 74%);
  aspect-ratio: 4 / 3;
}
.gx-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(201, 211, 227, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 211, 227, .07) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: .55;
}
.gx-figure > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gx-figure--wide { aspect-ratio: 16 / 9; }
.gx-figure--band { aspect-ratio: 21 / 9; }
.gx-figure--tall { aspect-ratio: 3 / 4; }
.gx-figure--square { aspect-ratio: 1 / 1; }

.gx-figure__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 14px 18px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gx-silver);
  background: linear-gradient(180deg, rgba(6, 11, 24, 0), rgba(6, 11, 24, .9));
}

/* ---------- 9. 轨道 / 技能树 / 筛选 ---------- */
.gx-orbit {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid var(--gx-line-strong);
}
.gx-orbit__node {
  position: relative;
  padding: 14px 0 14px 4px;
}
.gx-orbit__node::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gx-void);
  border: 2px solid var(--gx-cyan);
}
.gx-orbit__label {
  display: block;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--gx-slate);
}

.gx-tree {
  display: grid;
  gap: 18px;
}
.gx-tree__step {
  position: relative;
  padding: 20px 22px 20px 62px;
  border: 1px solid var(--gx-line);
  border-radius: var(--gx-radius);
  background: rgba(14, 26, 51, .45);
}
.gx-tree__step:hover { border-color: rgba(53, 224, 208, .45); }
.gx-tree__index {
  position: absolute;
  left: 20px;
  top: 20px;
  font-family: var(--gx-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gx-flame);
}

.gx-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.gx-filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--gx-line-strong);
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--gx-silver);
  background: rgba(201, 211, 227, .04);
  transition: color .25s ease, border-color .25s ease, background-color .25s ease;
}
.gx-filter:hover { border-color: var(--gx-cyan); color: var(--gx-cyan); }
.gx-filter[data-active] {
  background: var(--gx-cyan);
  border-color: transparent;
  color: #04121A;
}
.gx-filter__count {
  font-family: var(--gx-mono);
  font-size: 12px;
  opacity: .75;
}

.gx-rail {
  position: fixed;
  right: clamp(10px, 2vw, 30px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.gx-rail__link {
  position: relative;
  display: block;
  padding-left: 20px;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--gx-slate);
  transition: color .25s ease;
}
.gx-rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 1px;
  background: currentColor;
  transform: translateY(-50%);
  transition: width .25s ease;
}
.gx-rail__link:hover { color: var(--gx-silver); }
.gx-rail__link[aria-current] { color: var(--gx-cyan); }
.gx-rail__link[aria-current]::before { width: 16px; }

/* ---------- 10. 显现动画 ---------- */
.gx-js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity .62s ease, transform .62s cubic-bezier(.22, .75, .24, 1);
}
.gx-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 11. 头部 ---------- */
.gx-skip {
  position: absolute;
  left: 14px;
  top: -120px;
  z-index: 320;
  padding: 10px 18px;
  border-radius: var(--gx-radius);
  background: var(--gx-cyan);
  color: #04121A;
  font-size: 14px;
  font-weight: 600;
  transition: top .2s ease;
}
.gx-skip:focus { top: 14px; }

.gx-header {
  position: sticky;
  top: 0;
  z-index: 200;
  --gx-header-h: 78px;
  background: linear-gradient(180deg, rgba(6, 11, 24, .88) 0%, rgba(6, 11, 24, .46) 62%, rgba(6, 11, 24, 0) 100%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background-color .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.gx-header.is-pinned {
  --gx-header-h: 64px;
  background: rgba(6, 11, 24, .95);
  border-bottom-color: var(--gx-line);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .45);
}
.gx-header[data-open] { background: rgba(6, 11, 24, .95); }

.gx-topstrip {
  max-height: 40px;
  overflow: hidden;
  border-bottom: 1px solid var(--gx-line);
  background: rgba(14, 26, 51, .55);
  transition: max-height .35s ease, opacity .3s ease;
}
.gx-header.is-pinned .gx-topstrip {
  max-height: 0;
  opacity: 0;
  border-bottom-color: transparent;
}
.gx-topstrip__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 38px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gx-silver);
}
.gx-topstrip__text { flex: 1 1 auto; }
.gx-topstrip__link {
  color: var(--gx-cyan);
  letter-spacing: .12em;
  border-bottom: 1px solid rgba(53, 224, 208, .35);
  white-space: nowrap;
}
.gx-topstrip__link:hover { border-bottom-color: var(--gx-cyan); }

.gx-pulse {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gx-flame);
  box-shadow: 0 0 0 0 rgba(255, 107, 44, .55);
  animation: gx-pulse 2.4s ease-out infinite;
}
@keyframes gx-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 107, 44, .55); }
  70% { box-shadow: 0 0 0 9px rgba(255, 107, 44, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 107, 44, 0); }
}

.gx-header__bar { position: relative; z-index: 2; }

.gx-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
  height: var(--gx-header-h);
  transition: height .35s ease;
}

.gx-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  flex: 0 1 auto;
  min-width: 0;
}
.gx-brand__glyph {
  display: inline-flex;
  color: var(--gx-cyan);
  flex: 0 0 auto;
}
.gx-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}
.gx-brand__name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .16em;
  color: #FFFFFF;
}
.gx-brand__sub {
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--gx-slate);
}

.gx-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}
.gx-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.7vw, 26px);
}
.gx-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--gx-silver);
  transition: color .25s ease;
}
.gx-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--gx-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s ease;
}
.gx-nav__link:hover { color: #FFFFFF; }
.gx-nav__link:hover::after { transform: scaleX(1); }
.gx-nav__link[aria-current="page"] { color: var(--gx-cyan); }
.gx-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--gx-flame);
}
.gx-nav__cta { flex: 0 0 auto; }

.gx-burger {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border: 1px solid var(--gx-line-strong);
  border-radius: 999px;
  color: var(--gx-silver);
  font-size: 13px;
  letter-spacing: .16em;
  transition: border-color .25s ease, color .25s ease;
}
.gx-burger:hover { border-color: var(--gx-cyan); color: var(--gx-cyan); }
.gx-burger__box {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 12px;
}
.gx-burger__box span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .28s ease, opacity .28s ease;
}
.gx-header[data-open] .gx-burger__box span:first-child { transform: translateY(5px) rotate(45deg); }
.gx-header[data-open] .gx-burger__box span:last-child { transform: translateY(-5px) rotate(-45deg); }

.gx-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--gx-cyan), var(--gx-flame));
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.gx-header.is-pinned .gx-header__progress { opacity: 1; }

/* ---------- 12. 页脚 ---------- */
.gx-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 140px);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0) 0%, var(--gx-nebula) 10%, #07101F 100%);
  border-top: 1px solid var(--gx-line);
  overflow: hidden;
}
.gx-footer__orbit {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53, 224, 208, .75) 28%, rgba(255, 107, 44, .5) 68%, transparent);
}

.gx-footer__inner {
  display: grid;
  grid-template-columns: minmax(230px, 1fr) 2.2fr;
  gap: clamp(30px, 5vw, 84px);
  padding-block: clamp(44px, 6vw, 84px);
}

.gx-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.gx-footer__name {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: .16em;
  color: #FFFFFF;
}
.gx-footer__sub {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--gx-cyan);
}
.gx-footer__line {
  font-size: 14px;
  line-height: 1.8;
  color: var(--gx-slate);
  max-width: 30ch;
}
.gx-footer__brand .gx-btn { margin-top: 6px; }

.gx-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(22px, 3vw, 48px);
}
.gx-fcol__title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .28em;
  color: var(--gx-silver);
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--gx-line);
}
.gx-fcol__list {
  display: grid;
  gap: 10px;
}
.gx-fcol__link {
  display: inline-block;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--gx-slate);
  transition: color .25s ease, transform .25s ease;
}
.gx-fcol__link:hover {
  color: var(--gx-cyan);
  transform: translateX(3px);
}

.gx-footer__contact {
  border-top: 1px solid var(--gx-line);
  border-bottom: 1px solid var(--gx-line);
  padding-block: clamp(24px, 3vw, 38px);
}
.gx-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 42px);
  align-items: start;
}
.gx-contact__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.gx-contact__label {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--gx-cyan);
}
.gx-contact__value {
  font-size: 16px;
  line-height: 1.7;
  color: var(--gx-silver);
  word-break: break-word;
}
.gx-contact__note {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.8;
  color: var(--gx-slate);
  max-width: 74ch;
}

.gx-footer__base {
  background: #04070F;
  padding-block: 22px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gx-slate);
}
.gx-footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
}
.gx-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.gx-footer__legal a {
  color: var(--gx-slate);
  border-bottom: 1px solid transparent;
  transition: color .25s ease, border-color .25s ease;
}
.gx-footer__legal a:hover {
  color: var(--gx-cyan);
  border-bottom-color: var(--gx-cyan);
}

/* ---------- 13. 工具类 ---------- */
.gx-stack { display: grid; gap: clamp(14px, 2vw, 26px); }
.gx-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.gx-center { text-align: center; }

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1100px) {
  .gx-rail { display: none; }
}

@media (max-width: 1024px) {
  .gx-footer__inner { grid-template-columns: 1fr; }
  .gx-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 96px; }

  .gx-burger { display: inline-flex; }

  .gx-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: calc(var(--gx-header-h) + 40px) var(--gx-gutter) 48px;
    background: rgba(6, 11, 24, .97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .28s ease, transform .28s ease, visibility .28s ease;
  }
  .gx-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .gx-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    width: 100%;
  }
  .gx-nav__item {
    width: 100%;
    border-bottom: 1px solid var(--gx-line);
  }
  .gx-nav__link {
    display: block;
    padding: 16px 0;
    font-size: 22px;
    letter-spacing: .12em;
  }
  .gx-nav__link::after { display: none; }
  .gx-nav__cta {
    margin-top: 26px;
    width: 100%;
  }

  .gx-topstrip__link { display: none; }
  .gx-brand__name { font-size: 17px; letter-spacing: .12em; }
  .gx-brand__sub { letter-spacing: .22em; }
}

@media (max-width: 760px) {
  body { font-size: 16px; line-height: 1.8; }
  .gx-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .gx-span-3,
  .gx-span-4,
  .gx-span-5,
  .gx-span-6 { grid-column: span 6; }
  .gx-span-7,
  .gx-span-8,
  .gx-span-9 { grid-column: span 6; }
  .gx-contact { grid-template-columns: 1fr; }
  .gx-footer__cols { grid-template-columns: 1fr; gap: 30px; }
  .gx-footer__base-inner { justify-content: flex-start; }
  .gx-annot { display: none; }
  .gx-figure--band { aspect-ratio: 16 / 9; }
}

/* ---------- 15. 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;
  }
  .gx-js [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .gx-btn:hover,
  .gx-fcol__link:hover { transform: none; }
}