/* ==========================================================================
   冠军看台 · 共享样式表 /assets/site.css
   夜战记分板视觉体系：深藏青底 + 冠军金强调 + 青蓝/荧光绿数据色
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--gch-header-h) + 20px);
}

body { margin: 0; }

h1, h2, h3, h4, h5, h6, p, dl, dd, dt, figure, blockquote, pre {
  margin: 0;
}

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

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

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

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

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

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

hr { border: 0; }

/* ---------- 2. 变量 ---------- */
:root {
  --gch-navy: #0B1B33;
  --gch-navy-2: #13294B;
  --gch-gold: #F2B705;
  --gch-gold-2: #FFD666;
  --gch-mint: #3DF0A5;
  --gch-orange: #FF5C1A;
  --gch-mist: #E6EDF7;
  --gch-steel: #7B8AA3;
  --gch-cyan: #1FC8DB;

  --gch-line: rgba(123, 138, 163, 0.24);
  --gch-line-strong: rgba(242, 183, 5, 0.42);
  --gch-header-h: 70px;

  --gch-font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --gch-font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --gch-font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace,
    SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --gch-radius: 20px;
  --gch-radius-sm: 12px;
  --gch-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100%;
  background-color: var(--gch-navy);
  background-image:
    radial-gradient(1220px 620px at 90% -12%, rgba(31, 200, 219, 0.11), transparent 62%),
    radial-gradient(940px 540px at -12% 6%, rgba(242, 183, 5, 0.11), transparent 60%);
  background-repeat: no-repeat;
  color: var(--gch-mist);
  font-family: var(--gch-font-body);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--gch-font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--gch-mist);
}

h1 { font-size: clamp(38px, 6.2vw, 80px); }
h2 { font-size: clamp(26px, 3.6vw, 46px); }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: clamp(17px, 1.6vw, 20px); letter-spacing: -0.01em; }

p { margin-bottom: 0; }

strong, b { font-weight: 700; color: var(--gch-mist); }

::selection {
  background: var(--gch-gold);
  color: #0B1B33;
}

/* ---------- 4. 无障碍与焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--gch-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.gch-skip {
  position: absolute;
  left: clamp(12px, 3vw, 28px);
  top: -80px;
  z-index: 120;
  display: inline-block;
  padding: 12px 20px;
  border-radius: 0 0 14px 14px;
  background: var(--gch-gold);
  color: #0B1B33;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: top 0.2s var(--gch-ease);
}

.gch-skip:focus {
  top: 0;
}

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

/* ---------- 5. 布局工具 ---------- */
.gch-container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 40px);
}

.gch-container--wide {
  max-width: 1460px;
}

.gch-section {
  position: relative;
  padding-block: clamp(46px, 7vw, 96px);
}

.gch-section--tight {
  padding-block: clamp(26px, 4vw, 48px);
}

.gch-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 1.6vw, 20px);
}

.gch-stack--loose {
  gap: clamp(20px, 3vw, 36px);
}

.gch-rule {
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(242, 183, 5, 0.6) 0%,
    rgba(31, 200, 219, 0.3) 42%,
    rgba(123, 138, 163, 0.1) 100%
  );
}

.gch-grid {
  display: grid;
  gap: clamp(16px, 2vw, 26px);
}

.gch-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.gch-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gch-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gch-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.gch-span-3 { grid-column: span 3; }
.gch-span-4 { grid-column: span 4; }
.gch-span-5 { grid-column: span 5; }
.gch-span-6 { grid-column: span 6; }
.gch-span-7 { grid-column: span 7; }
.gch-span-8 { grid-column: span 8; }
.gch-span-9 { grid-column: span 9; }
.gch-span-12 { grid-column: span 12; }

/* ---------- 6. 排版工具 ---------- */
.gch-display {
  font-family: var(--gch-font-display);
  font-weight: 900;
  font-size: clamp(40px, 7.6vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--gch-mist);
}

.gch-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--gch-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gch-gold);
}

.gch-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  flex: 0 0 auto;
}

.gch-lead {
  max-width: 62ch;
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 1.78;
  color: #C3D0E4;
}

.gch-num {
  font-family: var(--gch-font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.gch-accent { color: var(--gch-gold); }
.gch-accent--mint { color: var(--gch-mint); }
.gch-accent--cyan { color: var(--gch-cyan); }
.gch-accent--orange { color: var(--gch-orange); }

.gch-link {
  color: var(--gch-cyan);
  border-bottom: 1px solid rgba(31, 200, 219, 0.42);
  transition: color 0.18s var(--gch-ease), border-color 0.18s var(--gch-ease);
}

.gch-link:hover {
  color: var(--gch-gold);
  border-bottom-color: var(--gch-gold);
}

.gch-scroll-x {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 10px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.gch-scroll-x > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.gch-scroll-x::-webkit-scrollbar { height: 6px; }
.gch-scroll-x::-webkit-scrollbar-track { background: rgba(123, 138, 163, 0.16); border-radius: 99px; }
.gch-scroll-x::-webkit-scrollbar-thumb { background: rgba(242, 183, 5, 0.55); border-radius: 99px; }

/* ---------- 7. 按钮 ---------- */
.gch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--gch-font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.18s var(--gch-ease), color 0.18s var(--gch-ease),
    border-color 0.18s var(--gch-ease), transform 0.18s var(--gch-ease);
}

.gch-btn--gold {
  background: var(--gch-gold);
  color: #0B1B33;
}

.gch-btn--gold:hover {
  background: var(--gch-gold-2);
  transform: translateY(-1px);
}

.gch-btn--mint {
  background: var(--gch-mint);
  color: #04241A;
}

.gch-btn--mint:hover {
  background: #6FF7C1;
  transform: translateY(-1px);
}

.gch-btn--ghost {
  border-color: rgba(230, 237, 247, 0.3);
  color: var(--gch-mist);
}

.gch-btn--ghost:hover {
  border-color: var(--gch-gold);
  color: var(--gch-gold);
}

.gch-btn--sm {
  padding: 8px 15px;
  font-size: 13px;
}

.gch-btn--lg {
  padding: 15px 28px;
  font-size: 15px;
}

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

/* ---------- 8. 标签 ---------- */
.gch-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: rgba(11, 27, 51, 0.62);
  font-family: var(--gch-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.09em;
  line-height: 1.5;
  white-space: nowrap;
}

.gch-tag--gold { color: var(--gch-gold); }
.gch-tag--mint { color: var(--gch-mint); }
.gch-tag--orange { color: var(--gch-orange); }
.gch-tag--cyan { color: var(--gch-cyan); }
.gch-tag--muted { color: var(--gch-steel); }

/* ---------- 9. 面板 ---------- */
.gch-panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--gch-line);
  border-radius: var(--gch-radius);
  background:
    linear-gradient(158deg, rgba(22, 43, 78, 0.96) 0%, rgba(15, 31, 58, 0.96) 72%),
    var(--gch-navy-2);
}

.gch-panel--gold {
  border-color: var(--gch-line-strong);
  box-shadow: inset 0 1px 0 rgba(242, 183, 5, 0.16);
}

.gch-panel--quiet {
  background: rgba(19, 41, 75, 0.5);
  border-color: rgba(123, 138, 163, 0.16);
  border-radius: var(--gch-radius-sm);
}

/* ---------- 10. 图片容器（响应式占位基础） ---------- */
.gch-media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: clamp(18px, 2vw, 26px);
  background-color: var(--gch-navy-2);
  background-image:
    radial-gradient(120% 92% at 14% 8%, rgba(31, 200, 219, 0.26), transparent 60%),
    radial-gradient(94% 84% at 92% 88%, rgba(242, 183, 5, 0.22), transparent 62%),
    linear-gradient(150deg, #16305A 0%, #0B1B33 100%);
}

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

.gch-media--wide { aspect-ratio: 21 / 9; }
.gch-media--16x9 { aspect-ratio: 16 / 9; }
.gch-media--4x3 { aspect-ratio: 4 / 3; }
.gch-media--3x4 { aspect-ratio: 3 / 4; }
.gch-media--1x1 { aspect-ratio: 1 / 1; }
.gch-media--tall { aspect-ratio: 3 / 5; }

.gch-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(230, 237, 247, 0.12);
  pointer-events: none;
  transition: box-shadow 0.2s var(--gch-ease);
}

.gch-media:hover::after {
  box-shadow: inset 0 0 0 2px rgba(242, 183, 5, 0.62);
}

.gch-media__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 4;
}

.gch-media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 4;
  padding: 42px 18px 16px;
  background: linear-gradient(0deg, rgba(6, 15, 29, 0.94) 8%, rgba(6, 15, 29, 0) 100%);
  font-size: 14px;
  color: var(--gch-mist);
}

/* ---------- 11. 数据块 ---------- */
.gch-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gch-stat__value {
  font-family: var(--gch-font-mono);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gch-gold);
}

.gch-stat__label {
  font-family: var(--gch-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gch-steel);
}

.gch-stat--mint .gch-stat__value { color: var(--gch-mint); }
.gch-stat--orange .gch-stat__value { color: var(--gch-orange); }
.gch-stat--mist .gch-stat__value { color: var(--gch-mist); }

/* ---------- 12. 面包屑 ---------- */
.gch-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--gch-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gch-steel);
}

.gch-breadcrumb__sep {
  color: rgba(123, 138, 163, 0.55);
}

.gch-breadcrumb a {
  transition: color 0.18s var(--gch-ease);
}

.gch-breadcrumb a:hover {
  color: var(--gch-gold);
}

/* ---------- 13. 标签页 ---------- */
.gch-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.gch-tabs__btn {
  padding: 8px 16px;
  border: 1px solid rgba(123, 138, 163, 0.34);
  border-radius: 999px;
  color: #C3D0E4;
  font-size: 13px;
  font-weight: 600;
  transition: background-color 0.18s var(--gch-ease), color 0.18s var(--gch-ease),
    border-color 0.18s var(--gch-ease);
}

.gch-tabs__btn:hover {
  border-color: var(--gch-gold);
  color: var(--gch-gold);
}

.gch-tabs__btn[aria-selected="true"] {
  background: var(--gch-gold);
  border-color: var(--gch-gold);
  color: #0B1B33;
}

.gch-tabs__panel[hidden] {
  display: none;
}

/* ---------- 14. 页头 ---------- */
.gch-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 27, 51, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gch-line);
}

.gch-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    var(--gch-gold) 0 96px,
    var(--gch-cyan) 96px 150px,
    rgba(123, 138, 163, 0.28) 150px 100%
  );
  opacity: 0.85;
}

.gch-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  width: 100%;
  max-width: 1460px;
  height: var(--gch-header-h);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 36px);
}

/* 品牌 */
.gch-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-right: auto;
  flex: 0 0 auto;
}

.gch-brand__mark {
  position: relative;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  transform: rotate(-9deg);
  background: conic-gradient(
    from 205deg,
    var(--gch-gold) 0deg,
    var(--gch-orange) 118deg,
    var(--gch-cyan) 238deg,
    var(--gch-gold) 360deg
  );
  box-shadow: 0 0 0 3px rgba(242, 183, 5, 0.14);
  transition: transform 0.24s var(--gch-ease), box-shadow 0.24s var(--gch-ease);
}

.gch-brand:hover .gch-brand__mark {
  transform: rotate(0deg) scale(1.06);
  box-shadow: 0 0 0 4px rgba(242, 183, 5, 0.24);
}

.gch-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.gch-brand__name {
  font-family: var(--gch-font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--gch-mist);
}

.gch-brand__sub {
  font-family: var(--gch-font-mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--gch-steel);
}

/* 导航 */
.gch-nav {
  flex: 0 1 auto;
}

.gch-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.gch-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: #C3D0E4;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.18s var(--gch-ease), background-color 0.18s var(--gch-ease),
    border-color 0.18s var(--gch-ease);
}

.gch-nav__index {
  font-family: var(--gch-font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--gch-steel);
  transition: color 0.18s var(--gch-ease);
}

.gch-nav__link:hover {
  color: var(--gch-gold);
  background: rgba(242, 183, 5, 0.08);
  border-color: rgba(242, 183, 5, 0.28);
}

.gch-nav__link:hover .gch-nav__index {
  color: var(--gch-gold-2);
}

.gch-nav__link[aria-current="page"] {
  color: var(--gch-gold);
  background: rgba(242, 183, 5, 0.13);
  border-color: var(--gch-line-strong);
}

.gch-nav__link[aria-current="page"] .gch-nav__index {
  color: var(--gch-gold);
}

/* 页头操作区 */
.gch-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.gch-header__cta {
  white-space: nowrap;
}

/* 移动端开关 */
.gch-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 13px;
  border: 1px solid rgba(230, 237, 247, 0.24);
  border-radius: 12px;
  color: var(--gch-mist);
  font-size: 13px;
  font-weight: 600;
  transition: color 0.18s var(--gch-ease), border-color 0.18s var(--gch-ease);
}

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

.gch-nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: 0 0 auto;
}

.gch-nav-toggle__bars::before,
.gch-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: top 0.22s var(--gch-ease), transform 0.22s var(--gch-ease);
}

.gch-nav-toggle__bars::before { top: 0; }
.gch-nav-toggle__bars::after { top: 10px; }

.gch-nav-toggle[aria-expanded="true"] .gch-nav-toggle__bars::before {
  top: 5px;
  transform: rotate(45deg);
}

.gch-nav-toggle[aria-expanded="true"] .gch-nav-toggle__bars::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* ---------- 15. 页脚 ---------- */
.gch-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 84px);
  background: #08152A;
  border-top: 1px solid var(--gch-line);
}

.gch-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(360px, 46%);
  height: 3px;
  background: linear-gradient(90deg, var(--gch-gold), var(--gch-cyan) 62%, transparent 100%);
}

.gch-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.8fr) minmax(0, 1.15fr);
  gap: clamp(24px, 4vw, 56px);
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(32px, 4vw, 54px);
}

.gch-footer__wordmark {
  font-family: var(--gch-font-display);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--gch-mist);
}

.gch-footer__tagline {
  margin-top: 8px;
  font-family: var(--gch-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gch-gold);
}

.gch-footer__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gch-steel);
}

.gch-footer__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 36px);
}

.gch-footer__title {
  margin-bottom: 14px;
  font-family: var(--gch-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gch-gold);
}

.gch-footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.gch-footer__link {
  display: inline-block;
  font-size: 14px;
  color: #C3D0E4;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--gch-ease), border-color 0.18s var(--gch-ease);
}

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

.gch-footer__card {
  padding: clamp(16px, 2vw, 22px);
  border: 1px solid var(--gch-line);
  border-radius: var(--gch-radius-sm);
  background: rgba(19, 41, 75, 0.55);
}

.gch-footer__meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gch-footer__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.gch-footer__row dt {
  font-family: var(--gch-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gch-steel);
  padding-top: 2px;
}

.gch-footer__row dd {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--gch-mist);
  word-break: break-word;
}

.gch-footer__hint {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed rgba(123, 138, 163, 0.28);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--gch-steel);
}

.gch-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 20px;
  padding-bottom: 28px;
  border-top: 1px solid rgba(123, 138, 163, 0.2);
}

.gch-footer__copy,
.gch-footer__fine {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gch-steel);
}

.gch-footer__copy {
  font-family: var(--gch-font-mono);
  letter-spacing: 0.02em;
}

/* ---------- 16. 滚动进度条（由 JS 注入） ---------- */
.gch-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.gch-progress__bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gch-gold) 0%, var(--gch-mint) 100%);
  transition: width 0.1s linear;
}

/* ---------- 17. 进入视口 ---------- */
.gch-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--gch-ease), transform 0.5s var(--gch-ease);
}

.gch-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1180px) {
  .gch-nav__link { padding: 8px 9px; font-size: 13.5px; }
  .gch-brand__sub { display: none; }
}

@media (max-width: 1040px) {
  :root { --gch-header-h: 62px; }

  .gch-header {
    background: #0B1B33;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

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

  .gch-nav {
    position: fixed;
    top: var(--gch-header-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 55;
    padding: 22px clamp(18px, 5vw, 34px) 48px;
    overflow-y: auto;
    background:
      radial-gradient(520px 300px at 100% 0%, rgba(242, 183, 5, 0.12), transparent 62%),
      linear-gradient(180deg, #0B1B33 0%, #102340 58%, #0B1B33 100%);
    border-top: 1px solid rgba(242, 183, 5, 0.32);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.22s var(--gch-ease), transform 0.22s var(--gch-ease),
      visibility 0.22s linear;
  }

  .gch-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .gch-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .gch-nav__item {
    border-bottom: 1px solid rgba(123, 138, 163, 0.2);
  }

  .gch-nav__link {
    justify-content: flex-start;
    gap: 14px;
    padding: 17px 4px;
    border: 0;
    border-radius: 0;
    font-size: 19px;
    font-weight: 700;
  }

  .gch-nav__link:hover,
  .gch-nav__link[aria-current="page"] {
    background: none;
    border: 0;
    color: var(--gch-gold);
  }

  .gch-nav__index {
    min-width: 26px;
    font-size: 11px;
  }

  body.gch-nav-open {
    overflow: hidden;
  }

  .gch-grid--3,
  .gch-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .gch-span-3,
  .gch-span-4,
  .gch-span-5 { grid-column: span 6; }
}

@media (max-width: 980px) {
  .gch-footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gch-footer__brand,
  .gch-footer__card { grid-column: 1 / -1; }

  .gch-footer__note { max-width: none; }
}

@media (max-width: 900px) {
  .gch-grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .gch-span-3,
  .gch-span-4,
  .gch-span-5,
  .gch-span-6,
  .gch-span-7,
  .gch-span-8,
  .gch-span-9 { grid-column: span 6; }
}

@media (max-width: 680px) {
  body { font-size: 15px; }

  .gch-header__cta { display: none; }

  .gch-grid--12,
  .gch-grid--2,
  .gch-grid--3,
  .gch-grid--4 { grid-template-columns: minmax(0, 1fr); }

  .gch-span-3,
  .gch-span-4,
  .gch-span-5,
  .gch-span-6,
  .gch-span-7,
  .gch-span-8,
  .gch-span-9,
  .gch-span-12 { grid-column: 1 / -1; }

  .gch-footer__top { grid-template-columns: minmax(0, 1fr); }
  .gch-footer__nav { grid-template-columns: minmax(0, 1fr); }
  .gch-footer__legal { flex-direction: column; }
}

/* ---------- 19. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .gch-brand__mark,
  .gch-btn:hover { transform: none; }
}