/* OG对战平台 · 共享站点样式 /assets/site.css */

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

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

body,
h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

:root {
  --og-void: #0A0D12;
  --og-panel: #12161F;
  --og-line: #232A38;
  --og-cream: #F2E9D8;
  --og-brown: #23180F;
  --og-cyan: #35E3D2;
  --og-magenta: #FF3D9A;
  --og-amber: #FFB020;
  --og-rust: #D4472A;
  --og-text: #EDF1F7;
  --og-muted: #94A0B4;
  --og-green: #3FD68C;

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

  --og-shell: 1280px;
  --og-pad: 48px;
  --og-gap: 16px;
  --og-radius: 4px;
  --og-shadow: 4px 4px 0 var(--og-line);
  --og-shadow-cyan: 4px 4px 0 rgba(53, 227, 210, 0.4);
  --og-shadow-cream: 4px 4px 0 rgba(242, 233, 216, 0.22);

  --og-fs-12: 12px;
  --og-fs-14: 14px;
  --og-fs-16: 16px;
  --og-fs-20: 20px;
  --og-fs-28: 28px;
  --og-fs-40: 40px;
  --og-fs-64: 64px;
  --og-fs-88: 88px;
}

body {
  background-color: var(--og-void);
  background-image:
    linear-gradient(to right, rgba(35, 42, 56, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(35, 42, 56, 0.55) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--og-text);
  font-family: var(--og-font-sans);
  font-size: var(--og-fs-16);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(237, 241, 247, 0.04) 0,
    rgba(237, 241, 247, 0.04) 1px,
    transparent 1px,
    transparent 4px
  );
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.05;
  background-image:
    radial-gradient(circle at 17% 23%, #EDF1F7 0.5px, transparent 0.6px),
    radial-gradient(circle at 73% 61%, #EDF1F7 0.5px, transparent 0.6px),
    radial-gradient(circle at 41% 87%, #EDF1F7 0.5px, transparent 0.6px),
    radial-gradient(circle at 89% 11%, #EDF1F7 0.5px, transparent 0.6px);
  background-size: 96px 96px, 128px 128px, 72px 72px, 160px 160px;
}

main, header, footer { position: relative; z-index: 3; }

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

::selection {
  background: var(--og-cyan);
  color: var(--og-void);
}

/* ---------- 中文排版基线 ---------- */
h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--og-text);
  text-wrap: balance;
}
h1 { font-size: var(--og-fs-64); }
h2 { font-size: var(--og-fs-40); }
h3 { font-size: var(--og-fs-28); }
h4 { font-size: var(--og-fs-20); }
p { text-wrap: pretty; }

strong {
  font-weight: 700;
  color: var(--og-cyan);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* ---------- 布局容器 ---------- */
.og-shell {
  width: 100%;
  max-width: var(--og-shell);
  margin-inline: auto;
  padding-inline: var(--og-pad);
}
.og-shell--narrow { max-width: 880px; }

/* ---------- Skip link ---------- */
.og-skip-link {
  position: fixed;
  top: 8px;
  left: 50%;
  transform: translate(-50%, -160%);
  z-index: 999;
  padding: 10px 20px;
  background: var(--og-cyan);
  color: var(--og-void);
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-14);
  font-weight: 700;
  border: 2px solid var(--og-void);
  border-radius: var(--og-radius);
  transition: transform 180ms ease;
}
.og-skip-link:focus-visible {
  transform: translate(-50%, 0);
  outline-color: var(--og-void);
}

/* ---------- 头部：悬浮胶囊 ---------- */
.og-header {
  position: fixed;
  top: 20px;
  left: 0;
  right: 0;
  z-index: 100;
  padding-inline: 20px;
  transition: top 200ms ease;
}
.og-header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: var(--og-shell);
  padding: 12px 20px;
  background: rgba(18, 22, 31, 0.94);
  border: 2px solid var(--og-line);
  border-radius: 999px;
  box-shadow: 0 6px 0 rgba(10, 13, 18, 0.9), 0 0 0 1px rgba(53, 227, 210, 0.06) inset;
  backdrop-filter: blur(10px);
  transition: padding 200ms ease, border-radius 200ms ease, background 200ms ease, box-shadow 200ms ease;
}

.og-header[data-condensed="true"] { top: 10px; }
.og-header[data-condensed="true"] .og-header__inner {
  padding-block: 8px;
  border-radius: 12px;
  background: rgba(10, 13, 18, 0.97);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(53, 227, 210, 0.12) inset;
}
.og-header[data-condensed="true"] .og-nav__link { padding-block: 6px; }

/* 品牌 */
.og-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-right: 4px;
}
.og-brand__mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--og-cyan);
  color: var(--og-void);
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-14);
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 2px solid var(--og-void);
  border-radius: 6px;
  box-shadow: 3px 3px 0 var(--og-magenta);
  transition: box-shadow 140ms ease, transform 140ms ease;
}
.og-brand:hover .og-brand__mark {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--og-magenta);
}
.og-brand__text {
  font-size: var(--og-fs-16);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--og-text);
  white-space: nowrap;
}

/* 导航 */
.og-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex: 1 1 auto;
  min-width: 0;
}
.og-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  min-width: 0;
}
.og-nav__item { flex: 0 0 auto; }
.og-nav__link {
  display: inline-block;
  padding: 8px 12px;
  font-size: var(--og-fs-14);
  font-weight: 600;
  color: var(--og-muted);
  border-radius: 999px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 140ms ease, background 140ms ease, border-color 140ms ease;
}
.og-nav__link:hover {
  color: var(--og-text);
  background: rgba(53, 227, 210, 0.1);
  border-bottom-color: var(--og-cyan);
}
.og-nav__link[aria-current="page"] {
  color: var(--og-text);
  background: rgba(53, 227, 210, 0.14);
  border-bottom-color: var(--og-cyan);
  font-weight: 800;
}
.og-nav__cta { display: none; }

/* 头部尾部 */
.og-header__tail {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  margin-left: auto;
}
.og-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  background: rgba(255, 176, 32, 0.1);
  border: 1px solid rgba(255, 176, 32, 0.55);
  border-radius: 999px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-amber);
  white-space: nowrap;
}
.og-status-pill__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--og-amber);
  box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.18);
  animation: og-pulse 2.4s ease-in-out infinite;
}
@keyframes og-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.og-status-pill__label { display: inline-block; }

.og-header__quick {
  display: none;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-cyan);
  padding: 6px 10px;
  border: 1px dashed rgba(53, 227, 210, 0.5);
  border-radius: var(--og-radius);
  white-space: nowrap;
  transition: background 140ms ease, color 140ms ease;
}
.og-header__quick:hover {
  background: var(--og-cyan);
  color: var(--og-void);
}

/* 移动菜单按钮 */
.og-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 10px;
  flex-direction: column;
  justify-content: space-between;
  border: 2px solid var(--og-line);
  border-radius: 8px;
  background: var(--og-panel);
  transition: border-color 140ms ease;
}
.og-nav-toggle:hover { border-color: var(--og-cyan); }
.og-nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--og-text);
  transition: transform 200ms ease, opacity 160ms ease;
}
.og-header[data-open="true"] .og-nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.og-header[data-open="true"] .og-nav-toggle__bar:nth-child(2) { opacity: 0; }
.og-header[data-open="true"] .og-nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.og-scroll-rail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: rgba(35, 42, 56, 0.9);
  overflow: hidden;
}
.og-scroll-rail__fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(var(--og-progress, 0));
  transform-origin: left center;
  background: linear-gradient(to right, var(--og-cyan), var(--og-magenta));
  transition: transform 80ms linear;
}

/* ---------- 通用按钮 ---------- */
.og-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--og-font-sans);
  font-size: var(--og-fs-14);
  font-weight: 800;
  letter-spacing: 0.02em;
  border: 2px solid var(--og-line);
  border-radius: var(--og-radius);
  background: var(--og-panel);
  color: var(--og-text);
  box-shadow: var(--og-shadow);
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease, color 140ms ease, border-color 140ms ease;
}
.og-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--og-line);
  border-color: var(--og-cyan);
}
.og-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--og-line);
}
.og-btn--primary {
  background: var(--og-cyan);
  color: var(--og-void);
  border-color: var(--og-cyan);
  box-shadow: var(--og-shadow-cyan);
}
.og-btn--primary:hover {
  background: #5CF0E2;
  border-color: var(--og-void);
  box-shadow: 6px 6px 0 rgba(255, 61, 154, 0.55);
}
.og-btn--ghost {
  background: transparent;
  color: var(--og-text);
  border-color: var(--og-line);
  box-shadow: none;
}
.og-btn--ghost:hover {
  color: var(--og-cyan);
  border-color: var(--og-cyan);
  box-shadow: 4px 4px 0 rgba(53, 227, 210, 0.25);
}

/* ---------- 组件 ---------- */
.og-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-muted);
  background: rgba(35, 42, 56, 0.6);
  border: 1px solid var(--og-line);
  border-radius: 999px;
  white-space: nowrap;
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}
.og-chip[data-status="selected"],
.og-chip:hover {
  color: var(--og-amber);
  border-color: var(--og-amber);
  background: rgba(255, 176, 32, 0.1);
}
.og-chip[data-tone="cyan"] { color: var(--og-cyan); border-color: rgba(53, 227, 210, 0.5); background: rgba(53, 227, 210, 0.08); }
.og-chip[data-tone="magenta"] { color: var(--og-magenta); border-color: rgba(255, 61, 154, 0.5); background: rgba(255, 61, 154, 0.08); }
.og-chip[data-tone="green"] { color: var(--og-green); border-color: rgba(63, 214, 140, 0.5); background: rgba(63, 214, 140, 0.08); }

.og-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--og-muted);
}
.og-kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--og-rust);
}

.og-rule {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--og-line);
  flex-wrap: wrap;
}
.og-rule > * { flex: 0 1 auto; }
.og-rule__label {
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.08em;
  color: var(--og-muted);
}

.og-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-muted);
}

.og-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.og-tag {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-muted);
  border: 1px solid var(--og-line);
  border-radius: 2px;
}
.og-tag::before { content: "#"; color: var(--og-rust); margin-right: 2px; }

/* 面包屑 */
.og-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-muted);
}
.og-breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.og-breadcrumb__item + .og-breadcrumb__item::before {
  content: "/";
  color: var(--og-line);
}
.og-breadcrumb__item a { color: var(--og-muted); transition: color 140ms ease; }
.og-breadcrumb__item a:hover { color: var(--og-cyan); }
.og-breadcrumb__item[aria-current="page"] { color: var(--og-text); }

/* 网格 */
.og-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--og-gap);
}
.og-span-3 { grid-column: span 3; }
.og-span-4 { grid-column: span 4; }
.og-span-5 { grid-column: span 5; }
.og-span-6 { grid-column: span 6; }
.og-span-7 { grid-column: span 7; }
.og-span-8 { grid-column: span 8; }
.og-span-12 { grid-column: span 12; }

/* 卡片 */
.og-card {
  position: relative;
  padding: 24px;
  background: var(--og-panel);
  border: 2px solid var(--og-line);
  border-radius: var(--og-radius);
  box-shadow: var(--og-shadow);
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}
.og-card:hover {
  transform: translate(-2px, -2px);
  border-color: rgba(53, 227, 210, 0.65);
  box-shadow: 6px 6px 0 var(--og-line);
}
.og-card--cream {
  background: var(--og-cream);
  color: var(--og-brown);
  border-color: var(--og-brown);
  box-shadow: 4px 4px 0 rgba(35, 24, 15, 0.65);
}
.og-card--cream h2,
.og-card--cream h3,
.og-card--cream h4,
.og-card--cream p,
.og-card--cream li,
.og-card--cream dd,
.og-card--cream dt { color: var(--og-brown); }
.og-card--cream strong { color: var(--og-rust); text-decoration-color: var(--og-rust); }
.og-card--cream .og-kicker { color: rgba(35, 24, 15, 0.6); }
.og-card--cream .og-kicker::before { background: var(--og-rust); }
.og-card--cream:hover {
  border-color: var(--og-brown);
  box-shadow: 6px 6px 0 rgba(35, 24, 15, 0.8);
}
.og-card--focus {
  background: linear-gradient(150deg, rgba(53, 227, 210, 0.16), rgba(18, 22, 31, 0.98) 62%);
  border-color: var(--og-cyan);
  box-shadow: 4px 4px 0 rgba(53, 227, 210, 0.45);
}
.og-card--focus:hover {
  border-color: var(--og-cyan);
  box-shadow: 6px 6px 0 rgba(53, 227, 210, 0.5);
}

/* 图片容器基础规则 */
.og-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--og-void);
  border: 2px solid var(--og-line);
  border-radius: var(--og-radius);
}
.og-media--wide { aspect-ratio: 21 / 9; }
.og-media--tall { aspect-ratio: 4 / 5; }
.og-media--square { aspect-ratio: 1 / 1; }
.og-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06) brightness(0.92);
}
.og-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(10, 13, 18, 0.22) 0,
    rgba(10, 13, 18, 0.22) 1px,
    transparent 1px,
    transparent 4px
  );
}
.og-media__caption {
  margin-top: 8px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-muted);
}

/* 正文容器 */
.og-prose {
  max-width: 72ch;
  font-size: var(--og-fs-16);
  line-height: 1.78;
  color: var(--og-text);
}
.og-prose > * + * { margin-top: 1.1em; }
.og-prose h2 {
  margin-top: 2em;
  font-size: var(--og-fs-28);
  padding-left: 14px;
  border-left: 4px solid var(--og-cyan);
}
.og-prose h3 {
  margin-top: 1.6em;
  font-size: var(--og-fs-20);
  color: var(--og-text);
}
.og-prose p { color: #D6DEEA; }
.og-prose ul, .og-prose ol { padding-left: 1.3em; }
.og-prose ul { list-style: square; }
.og-prose ol { list-style: decimal; }
.og-prose li + li { margin-top: 0.45em; }
.og-prose li::marker { color: var(--og-rust); }
.og-prose blockquote {
  padding: 18px 22px;
  background: var(--og-cream);
  color: var(--og-brown);
  border: 2px solid var(--og-brown);
  border-left-width: 8px;
  border-left-color: var(--og-rust);
  border-radius: var(--og-radius);
  box-shadow: 4px 4px 0 rgba(35, 24, 15, 0.6);
}
.og-prose blockquote > * { color: var(--og-brown); }
.og-prose table {
  font-size: var(--og-fs-14);
  border: 2px solid var(--og-line);
}
.og-prose th, .og-prose td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--og-line);
}
.og-prose th {
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.06em;
  color: var(--og-cyan);
  background: rgba(35, 42, 56, 0.6);
}
.og-prose td { font-family: var(--og-font-mono); color: var(--og-muted); }

/* ---------- 页脚 ---------- */
.og-footer {
  position: relative;
  margin-top: 96px;
  background: var(--og-panel);
  border-top: 2px solid var(--og-line);
  z-index: 3;
}
.og-footer__scan {
  height: 4px;
  background: linear-gradient(to right, var(--og-cyan), var(--og-magenta));
}
.og-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 40px;
  padding-block: 56px 40px;
}
.og-footer__lead { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.og-footer__brand {
  font-size: var(--og-fs-20);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--og-text);
}
.og-footer__closing {
  font-size: var(--og-fs-14);
  line-height: 1.7;
  color: var(--og-muted);
  max-width: 34ch;
}
.og-footer__index {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.og-footer__group { min-width: 0; }
.og-footer__title {
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.12em;
  color: var(--og-amber);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--og-line);
}
.og-footer__list { display: flex; flex-direction: column; gap: 10px; }
.og-footer__link {
  font-size: var(--og-fs-14);
  color: var(--og-muted);
  transition: color 140ms ease, padding-left 140ms ease;
  border-bottom: 1px solid transparent;
}
.og-footer__link:hover {
  color: var(--og-cyan);
  border-bottom-color: var(--og-cyan);
}
.og-footer__contact {
  padding: 20px;
  background: var(--og-void);
  border: 2px solid var(--og-line);
  border-radius: var(--og-radius);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
}
.og-footer__matrix { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.og-footer__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.02em;
  line-height: 1.6;
}
.og-footer__row dt { color: var(--og-amber); }
.og-footer__row dd { color: var(--og-muted); word-break: break-word; }
.og-footer__row dd a { color: var(--og-muted); }
.og-footer__row dd a:hover { color: var(--og-cyan); }
.og-footer__note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--og-line);
  font-size: var(--og-fs-12);
  line-height: 1.65;
  color: rgba(148, 160, 180, 0.85);
}
.og-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 32px;
  font-family: var(--og-font-mono);
  font-size: var(--og-fs-12);
  letter-spacing: 0.04em;
  color: var(--og-muted);
}
.og-footer__record {
  color: var(--og-amber);
}
.og-footer__copy { color: rgba(148, 160, 180, 0.75); }

/* ---------- 显现协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 320ms ease, transform 320ms ease;
  transition-delay: var(--og-delay, 0ms);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 1180px) {
  .og-header__quick { display: inline-block; }
  .og-nav__cta { display: none; }
}

@media (max-width: 1080px) {
  :root {
    --og-pad: 32px;
    --og-fs-64: 52px;
    --og-fs-40: 34px;
  }
  .og-header__inner { gap: 12px; padding: 10px 14px; }
  .og-brand__text { font-size: var(--og-fs-14); }
  .og-nav__link { padding: 7px 9px; font-size: var(--og-fs-12); }
  .og-status-pill { padding: 5px 9px; }
  .og-footer__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 32px; }
  .og-footer__contact { grid-column: span 2; }
}

@media (max-width: 860px) {
  :root {
    --og-pad: 20px;
    --og-gap: 12px;
    --og-fs-64: 40px;
    --og-fs-40: 28px;
    --og-fs-28: 22px;
  }
  .og-header { top: 12px; padding-inline: 12px; }
  .og-header__inner {
    border-radius: 14px;
    padding: 10px 14px;
    flex-wrap: wrap;
    align-items: center;
  }
  .og-header[data-condensed="true"] { top: 8px; }
  .og-header__tail { margin-left: auto; }
  .og-nav-toggle { display: flex; }
  .og-status-pill__label { display: none; }
  .og-status-pill { padding: 6px 8px; }

  .og-nav {
    order: 3;
    flex-basis: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 8px 0 6px;
    margin-top: 8px;
    border-top: 1px solid var(--og-line);
  }
  .og-header[data-open="true"] .og-nav { display: flex; }
  .og-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .og-nav__link {
    display: block;
    padding: 11px 12px;
    font-size: var(--og-fs-14);
    border-radius: var(--og-radius);
    border-bottom: 0;
    border-left: 3px solid transparent;
  }
  .og-nav__link:hover,
  .og-nav__link[aria-current="page"] {
    border-bottom-color: transparent;
    border-left-color: var(--og-cyan);
  }
  .og-nav__cta { display: inline-flex; width: 100%; }

  .og-footer__inner { grid-template-columns: minmax(0, 1fr); gap: 28px; padding-block: 40px 28px; }
  .og-footer__contact { grid-column: span 1; }
  .og-footer__index { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .og-footer__base { padding-bottom: 24px; }

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

@media (max-width: 560px) {
  :root {
    --og-fs-64: 34px;
    --og-fs-40: 26px;
    --og-fs-28: 20px;
    --og-fs-20: 18px;
  }
  .og-brand__mark { width: 34px; height: 34px; }
  .og-footer__index { grid-template-columns: minmax(0, 1fr); }
  .og-brand__text { max-width: 9em; white-space: normal; line-height: 1.2; }
  .og-card { padding: 18px; }
  .og-footer__base { flex-direction: column; align-items: flex-start; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 120ms !important;
    transition-property: opacity, color, background-color, border-color, box-shadow !important;
  }
  [data-reveal] {
    transform: none !important;
    transition-duration: 120ms !important;
  }
  body::before { opacity: 0.02; }
  .og-status-pill__dot { animation: none !important; }
}