/* ============================================================
   欧亿体育赛事 · 共享外壳样式 /assets/site.css
   设计语言：数字竞技场 —— 深空蓝底、荧光青与竞技橙、
   极细边界、展签注释、编号章节
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { 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; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --oy-void: #080D1F;
  --oy-indigo: #121A3C;
  --oy-teal: #06333C;
  --oy-wine: #4E102E;
  --oy-violet: #6E4BFF;
  --oy-cyan: #2FE9DA;
  --oy-orange: #FF6A2B;
  --oy-mist: #E9EFFF;
  --oy-slate: #8D9AC0;
  --oy-bronze: #D9A65A;

  --oy-line: rgba(141, 154, 192, .26);
  --oy-line-strong: rgba(47, 233, 218, .55);
  --oy-line-warm: rgba(217, 166, 90, .42);
  --oy-shadow: 0 1px 0 rgba(233, 239, 255, .04), 0 14px 34px -20px rgba(0, 0, 0, .95);
  --oy-shadow-lift: 0 24px 50px -26px rgba(0, 0, 0, .95);

  --oy-r-sm: 6px;
  --oy-r-md: 14px;
  --oy-r-pill: 999px;

  --oy-w: 1240px;
  --oy-gap: clamp(16px, 2vw, 28px);
  --oy-pad: clamp(18px, 4vw, 40px);

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

  --oy-fs-12: 12px;
  --oy-fs-13: 13px;
  --oy-fs-16: 16px;
  --oy-fs-18: 18px;
  --oy-fs-24: 24px;
  --oy-fs-34: 34px;
  --oy-fs-52: 52px;
  --oy-fs-88: 88px;
  --oy-fs-140: 140px;
}

/* ---------- 3. 中文排版基底 ---------- */
body {
  background: var(--oy-void);
  color: var(--oy-mist);
  font-family: var(--oy-font);
  font-size: var(--oy-fs-16);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: clamp(84px, 9vw, 104px);
  overflow-x: hidden;
  background-image:
    radial-gradient(900px 520px at 88% -8%, rgba(110, 75, 255, .16), transparent 62%),
    radial-gradient(720px 460px at -10% 12%, rgba(47, 233, 218, .08), transparent 60%);
  background-repeat: no-repeat;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--oy-mist);
}

p { max-width: 68ch; }
strong { font-weight: 700; color: var(--oy-mist); }

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

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

/* ---------- 4. 跳转链 ---------- */
.oy-skip {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -180%);
  padding: 10px 20px;
  border-radius: var(--oy-r-pill);
  background: var(--oy-cyan);
  color: var(--oy-void);
  font-size: var(--oy-fs-13);
  font-weight: 700;
  letter-spacing: .04em;
  transition: transform .22s ease;
}
.oy-skip:focus { transform: translate(-50%, 0); }

/* ---------- 5. 顶栏 ---------- */
.oy-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 14px clamp(12px, 3vw, 32px) 0;
  pointer-events: none;
}
.oy-header::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 140px;
  background: linear-gradient(180deg, rgba(8, 13, 31, .94), rgba(8, 13, 31, 0));
  z-index: -1;
  pointer-events: none;
}

.oy-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
}
.oy-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--oy-cyan), var(--oy-violet) 56%, var(--oy-orange));
}

.oy-pod {
  pointer-events: auto;
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  width: 100%;
  max-width: var(--oy-w);
  margin: 0 auto;
  padding: 8px 10px 8px 16px;
  background: rgba(14, 21, 48, .84);
  border: 1px solid var(--oy-line);
  border-radius: var(--oy-r-pill);
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, .98), inset 0 1px 0 rgba(233, 239, 255, .05);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  transition: padding .3s ease, background .3s ease, border-color .3s ease;
}
.oy-header.is-condensed .oy-pod {
  padding: 5px 8px 5px 14px;
  background: rgba(8, 13, 31, .94);
  border-color: rgba(47, 233, 218, .3);
}

.oy-status {
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--oy-cyan);
  box-shadow: 0 0 0 0 rgba(47, 233, 218, .55);
  animation: oy-pulse 2.6s ease-out infinite;
}
.oy-status[data-status="warn"] {
  background: var(--oy-orange);
  animation-name: oy-pulse-warn;
}
@keyframes oy-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(47, 233, 218, .55); }
  70%  { box-shadow: 0 0 0 9px rgba(47, 233, 218, 0); }
  100% { box-shadow: 0 0 0 0 rgba(47, 233, 218, 0); }
}
@keyframes oy-pulse-warn {
  0%   { box-shadow: 0 0 0 0 rgba(255, 106, 43, .55); }
  70%  { box-shadow: 0 0 0 9px rgba(255, 106, 43, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 106, 43, 0); }
}

.oy-pod__brand {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
  padding-right: clamp(6px, 1.4vw, 18px);
  border-right: 1px solid var(--oy-line);
}
.oy-pod__mark {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--oy-mist);
  white-space: nowrap;
}
.oy-pod__tagline {
  font-family: var(--oy-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--oy-bronze);
  white-space: nowrap;
}

.oy-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}
.oy-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}
.oy-nav__link {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--oy-r-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--oy-slate);
  white-space: nowrap;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease;
}
.oy-nav__link:hover { color: var(--oy-mist); background: rgba(233, 239, 255, .07); }
.oy-nav__link[aria-current="page"] {
  color: var(--oy-cyan);
  background: rgba(47, 233, 218, .1);
  box-shadow: inset 0 0 0 1px rgba(47, 233, 218, .45);
}

.oy-pod__actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.oy-quickexport { position: relative; display: inline-flex; }
.oy-quickexport__hint {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  padding: 5px 10px;
  white-space: nowrap;
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--oy-cyan);
  background: rgba(8, 13, 31, .97);
  border: 1px solid var(--oy-line-strong);
  border-radius: var(--oy-r-sm);
  opacity: 0;
  transform: translateY(-5px);
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}
.oy-quickexport:hover .oy-quickexport__hint,
.oy-quickexport:focus-within .oy-quickexport__hint {
  opacity: 1;
  transform: translateY(0);
}

.oy-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 15px;
  border: 1px solid var(--oy-line);
  border-radius: var(--oy-r-pill);
  color: var(--oy-mist);
  transition: border-color .2s ease, color .2s ease;
}
.oy-navtoggle:hover { border-color: var(--oy-line-strong); color: var(--oy-cyan); }
.oy-navtoggle__bars { display: flex; flex-direction: column; gap: 4px; }
.oy-navtoggle__bars span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--oy-cyan);
  transition: transform .25s ease, opacity .25s ease;
}
.oy-navtoggle__text { font-size: var(--oy-fs-13); letter-spacing: .08em; }
.oy-navtoggle[aria-expanded="true"] .oy-navtoggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.oy-navtoggle[aria-expanded="true"] .oy-navtoggle__bars span:nth-child(2) { opacity: 0; }
.oy-navtoggle[aria-expanded="true"] .oy-navtoggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------- 6. 通用按钮 ---------- */
.oy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--oy-line);
  border-radius: var(--oy-r-pill);
  background: rgba(233, 239, 255, .03);
  color: var(--oy-mist);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  white-space: nowrap;
  transition: color .22s ease, border-color .22s ease, background .22s ease, transform .22s ease, box-shadow .22s ease;
}
.oy-btn:hover {
  color: var(--oy-cyan);
  border-color: var(--oy-line-strong);
  transform: translateY(-1px);
}
.oy-btn--ghost { background: transparent; }
.oy-btn--line { border-color: var(--oy-line-strong); color: var(--oy-cyan); background: transparent; }
.oy-btn--accent {
  border-color: transparent;
  background: linear-gradient(100deg, var(--oy-orange), #FF9147 78%);
  color: #1B0A02;
  font-weight: 700;
}
.oy-btn--accent:hover {
  color: #1B0A02;
  filter: brightness(1.07);
  box-shadow: 0 0 0 1px rgba(255, 106, 43, .6), 0 14px 32px -16px rgba(255, 106, 43, .8);
}
.oy-btn--block { width: 100%; }

/* ---------- 7. 容器与栅格 ---------- */
.oy-container {
  width: 100%;
  max-width: var(--oy-w);
  margin-inline: auto;
  padding-inline: var(--oy-pad);
}

.oy-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--oy-gap);
}
.oy-span-3  { grid-column: span 3; }
.oy-span-4  { grid-column: span 4; }
.oy-span-5  { grid-column: span 5; }
.oy-span-6  { grid-column: span 6; }
.oy-span-7  { grid-column: span 7; }
.oy-span-8  { grid-column: span 8; }
.oy-span-9  { grid-column: span 9; }
.oy-span-12 { grid-column: span 12; }

/* ---------- 8. 分区与编号章节 ---------- */
.oy-section {
  position: relative;
  padding: clamp(48px, 7vw, 104px) 0;
}
.oy-section--void { background: var(--oy-void); }
.oy-section--indigo { background: var(--oy-indigo); }
.oy-section--teal { background: linear-gradient(180deg, var(--oy-teal), #04242B); }
.oy-section--wine { background: linear-gradient(180deg, var(--oy-wine), #320A1D); }

.oy-section__head {
  display: flex;
  align-items: flex-end;
  gap: clamp(14px, 2vw, 28px);
  flex-wrap: wrap;
  margin-bottom: clamp(22px, 3vw, 40px);
}
.oy-section__num {
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-13);
  letter-spacing: .32em;
  color: var(--oy-bronze);
}
.oy-section__title {
  font-size: clamp(28px, 4.6vw, var(--oy-fs-52));
  font-weight: 800;
  line-height: 1.06;
  max-width: 22ch;
}
.oy-section__desc {
  font-size: var(--oy-fs-16);
  color: var(--oy-slate);
  max-width: 52ch;
}

/* ---------- 9. 文本工具 ---------- */
.oy-display {
  font-size: clamp(44px, 9vw, var(--oy-fs-140));
  font-weight: 800;
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--oy-mist);
}
.oy-lead {
  font-size: var(--oy-fs-18);
  line-height: 1.75;
  color: var(--oy-slate);
  max-width: 52ch;
}
.oy-mono {
  font-family: var(--oy-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}
.oy-annotation {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--oy-slate);
  user-select: none;
}
.oy-annotation--bronze { color: var(--oy-bronze); }

/* ---------- 10. 展签标签 ---------- */
.oy-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px;
  border: 1px solid var(--oy-line-strong);
  border-radius: var(--oy-r-pill);
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--oy-cyan);
}
.oy-tag--bronze { color: var(--oy-bronze); border-color: var(--oy-line-warm); }
.oy-tag--orange { color: var(--oy-orange); border-color: rgba(255, 106, 43, .45); }
.oy-tag--slate { color: var(--oy-slate); border-color: var(--oy-line); }

/* ---------- 11. 卡片 ---------- */
.oy-card {
  position: relative;
  display: block;
  padding: clamp(16px, 2vw, 24px);
  background: rgba(18, 26, 60, .6);
  border: 1px solid var(--oy-line);
  border-radius: var(--oy-r-md);
  box-shadow: var(--oy-shadow);
  transition: transform .26s ease, border-color .26s ease, background .26s ease, box-shadow .26s ease;
}
a.oy-card:hover,
a.oy-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--oy-line-strong);
  background: rgba(18, 26, 60, .88);
  box-shadow: var(--oy-shadow-lift);
}
.oy-card__eyebrow {
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--oy-bronze);
  margin-bottom: 10px;
}
.oy-card__title {
  font-size: var(--oy-fs-18);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
}
.oy-card__meta {
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  color: var(--oy-slate);
}

/* ---------- 12. 索引列表 ---------- */
.oy-index { border-top: 1px solid var(--oy-line); }
.oy-index__item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) auto;
  gap: clamp(12px, 2vw, 24px);
  align-items: baseline;
  padding: 15px 0;
  border-bottom: 1px solid var(--oy-line);
  transition: background .22s ease, padding-left .22s ease;
}
a.oy-index__item:hover {
  background: rgba(47, 233, 218, .05);
  padding-left: 10px;
}
.oy-index__no {
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-13);
  color: var(--oy-bronze);
  letter-spacing: .1em;
}
.oy-index__title { font-size: var(--oy-fs-16); font-weight: 500; color: var(--oy-mist); }
.oy-index__meta { font-family: var(--oy-mono); font-size: var(--oy-fs-12); color: var(--oy-slate); }

/* ---------- 13. 折叠面板 ---------- */
.oy-panel { border-bottom: 1px solid var(--oy-line); }
.oy-panel > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--oy-fs-16);
  font-weight: 500;
  color: var(--oy-mist);
  transition: color .2s ease;
}
.oy-panel > summary::-webkit-details-marker { display: none; }
.oy-panel > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--oy-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--oy-cyan);
}
.oy-panel[open] > summary::after { content: "–"; }
.oy-panel > summary:hover { color: var(--oy-cyan); }
.oy-panel__body {
  padding: 0 0 20px;
  font-size: 15px;
  color: var(--oy-slate);
}
.oy-panel__body p + p { margin-top: 10px; }

/* ---------- 14. 面包屑 ---------- */
.oy-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  letter-spacing: .08em;
  color: var(--oy-slate);
  margin-bottom: clamp(18px, 2.4vw, 30px);
}
.oy-breadcrumb a { transition: color .2s ease; }
.oy-breadcrumb a:hover { color: var(--oy-cyan); }
.oy-breadcrumb__sep { color: rgba(141, 154, 192, .5); }
.oy-breadcrumb [aria-current="page"] { color: var(--oy-bronze); }

/* ---------- 15. 图片容器（页面阶段放占位） ---------- */
.oy-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--oy-line);
  border-radius: var(--oy-r-md);
  background:
    linear-gradient(140deg, var(--oy-indigo) 0%, var(--oy-void) 58%, rgba(110, 75, 255, .22) 100%);
}
.oy-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(141, 154, 192, .1) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(141, 154, 192, .1) 0 1px, transparent 1px 64px);
  opacity: .5;
  pointer-events: none;
}
.oy-media--wide { aspect-ratio: 16 / 9; }
.oy-media--tall { aspect-ratio: 3 / 4; }
.oy-media--square { aspect-ratio: 1 / 1; }
.oy-media img,
.oy-media__img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.06);
}
.oy-media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 14px 10px;
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--oy-slate);
  background: linear-gradient(0deg, rgba(8, 13, 31, .94), rgba(8, 13, 31, 0));
}

/* ---------- 16. 交互协议：筛选 / 显现 / 计数 ---------- */
.oy-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.oy-filter__btn {
  padding: 7px 15px;
  border: 1px solid var(--oy-line);
  border-radius: var(--oy-r-pill);
  background: rgba(233, 239, 255, .02);
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-13);
  letter-spacing: .05em;
  color: var(--oy-slate);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.oy-filter__btn:hover { color: var(--oy-mist); border-color: var(--oy-line-strong); }
.oy-filter__btn[aria-pressed="true"] {
  background: var(--oy-cyan);
  border-color: var(--oy-cyan);
  color: var(--oy-void);
  font-weight: 700;
}
.oy-filter__count {
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  letter-spacing: .1em;
  color: var(--oy-bronze);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

.oy-stat {
  font-family: var(--oy-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4vw, var(--oy-fs-52));
  font-weight: 700;
  line-height: 1;
  color: var(--oy-cyan);
}
.oy-stat--orange { color: var(--oy-orange); }
.oy-stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--oy-slate);
}

/* ---------- 17. 页脚 ---------- */
.oy-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 120px);
  padding-top: clamp(36px, 5vw, 72px);
  background: linear-gradient(180deg, rgba(18, 26, 60, .86), rgba(8, 13, 31, .99) 58%), var(--oy-void);
  border-top: 1px solid var(--oy-line);
  color: var(--oy-slate);
  font-size: 14px;
}
.oy-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(260px, 42%);
  height: 1px;
  background: linear-gradient(90deg, var(--oy-cyan), rgba(47, 233, 218, 0));
}

.oy-footer__inner {
  display: grid;
  grid-template-columns: minmax(210px, 1.2fr) repeat(3, minmax(110px, .7fr)) minmax(240px, 1.5fr);
  gap: clamp(20px, 3vw, 44px);
}

.oy-footer__brand { display: flex; flex-direction: column; gap: 8px; }
.oy-footer__mark {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--oy-mist);
  letter-spacing: -.01em;
}
.oy-footer__tagline {
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--oy-bronze);
}
.oy-footer__sub { font-size: var(--oy-fs-13); line-height: 1.7; }

.oy-footer__title {
  margin-bottom: 14px;
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--oy-cyan);
}
.oy-footer__list { display: flex; flex-direction: column; gap: 9px; }
.oy-footer__link {
  display: inline-block;
  font-size: 14px;
  color: var(--oy-slate);
  transition: color .2s ease, padding-left .2s ease;
}
.oy-footer__link:hover { color: var(--oy-cyan); padding-left: 6px; }

.oy-footer__list--meta { gap: 11px; }
.oy-footer__list--meta li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.oy-footer__key {
  padding-top: 2px;
  font-family: var(--oy-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--oy-bronze);
}
.oy-footer__val { font-size: 13.5px; line-height: 1.65; color: var(--oy-mist); word-break: break-word; }
.oy-footer__note {
  margin-top: 14px;
  font-size: var(--oy-fs-12);
  line-height: 1.75;
  color: var(--oy-slate);
  max-width: 42ch;
}

.oy-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
  margin-top: clamp(32px, 4vw, 56px);
  padding-top: 18px;
  padding-bottom: 26px;
  border-top: 1px solid var(--oy-line);
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  letter-spacing: .06em;
  color: var(--oy-slate);
}
.oy-footer__legal { color: var(--oy-bronze); }
.oy-footer__closing { margin-left: auto; }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1180px) {
  .oy-pod__tagline { display: none; }
}

@media (max-width: 1080px) {
  .oy-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .oy-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 1024px) {
  .oy-span-3, .oy-span-4, .oy-span-5 { grid-column: span 6; }
  .oy-span-7, .oy-span-8, .oy-span-9 { grid-column: span 12; }
}

@media (max-width: 980px) {
  body { padding-top: 84px; }

  .oy-navtoggle { display: inline-flex; }
  .oy-pod { padding: 8px 10px 8px 14px; border-radius: 22px; }
  .oy-pod__brand { border-right: 0; padding-right: 0; }
  .oy-pod__actions .oy-btn--ghost { display: none; }
  .oy-btn { padding: 8px 14px; font-size: var(--oy-fs-13); }

  .oy-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex: none;
    justify-content: flex-start;
    max-height: 70vh;
    overflow: auto;
    padding: 10px;
    background: rgba(9, 14, 34, .98);
    border: 1px solid var(--oy-line);
    border-radius: var(--oy-r-md);
    box-shadow: 0 34px 64px -32px rgba(0, 0, 0, .95);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }
  .oy-nav[data-open] { display: block; animation: oy-drop .26s ease both; }
  .oy-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .oy-nav__link {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 15px;
  }
  .oy-nav__link[aria-current="page"] {
    box-shadow: inset 3px 0 0 var(--oy-cyan), inset 0 0 0 1px rgba(47, 233, 218, .28);
  }
  @keyframes oy-drop {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

@media (max-width: 680px) {
  .oy-span-3, .oy-span-4, .oy-span-5, .oy-span-6,
  .oy-span-7, .oy-span-8, .oy-span-9, .oy-span-12 { grid-column: 1 / -1; }

  .oy-footer__inner { grid-template-columns: 1fr; }
  .oy-footer__closing { margin-left: 0; }
  .oy-index__item { grid-template-columns: 52px minmax(0, 1fr); }
  .oy-index__meta { grid-column: 2 / -1; }
}

@media (max-width: 560px) {
  .oy-header { padding-top: 10px; }
  .oy-pod__mark { font-size: 13.5px; }
  .oy-navtoggle__text { display: none; }
}

/* ---------- 19. 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .oy-progress__bar { transition: none; }
}