/* ==========================================================================
   一体育 · 共享外壳样式 /assets/site.css
   夜场数据台：深墨底 + 堆叠面板 + 居中刊头 + 荧光橙锚点
   ========================================================================== */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { 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%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B1220;
  --tunnel: #111F3A;
  --wood: #C98A4B;
  --ivory: #F5F7FA;
  --neon: #FF5A1F;
  --cyan: #22D3EE;
  --amber: #F5B841;
  --mist: #7C8AA5;
  --glass: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --line-soft: rgba(255, 255, 255, 0.07);
  --ink-soft: rgba(245, 247, 250, 0.74);

  --shell: 1180px;
  --shell-wide: 1360px;
  --gutter: clamp(1rem, 4vw, 2.5rem);

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

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

  --fs-h1: clamp(2.6rem, 7vw, 5.2rem);
  --fs-h2: clamp(1.7rem, 3.4vw, 2.6rem);
  --fs-h3: clamp(1.15rem, 2vw, 1.5rem);
  --fs-body: clamp(1rem, 0.35vw + 0.94rem, 1.125rem);
  --fs-small: 0.875rem;
  --fs-mono: 0.76rem;

  --shadow-panel: 0 28px 64px -44px rgba(0, 0, 0, 0.95);
  --shadow-pop: 0 14px 34px -16px rgba(255, 90, 31, 0.75);
  --ease-out: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--ivory);
  background-color: var(--ink);
  background-image:
    radial-gradient(80rem 34rem at 50% -10rem, rgba(34, 211, 238, 0.10), transparent 62%),
    radial-gradient(52rem 30rem at 92% 6rem, rgba(255, 90, 31, 0.10), transparent 60%),
    repeating-linear-gradient(115deg, rgba(201, 138, 75, 0.055) 0 1px, transparent 1px 92px);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-h1); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.3; }
h4 { font-size: 1.0625rem; line-height: 1.4; }

p { text-wrap: pretty; }

::selection { background: var(--neon); color: #160A03; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 4. 布局工具 ---------- */
.shell {
  width: min(calc(100% - var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.shell--wide { --shell: var(--shell-wide); }

.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section--tight { padding-block: clamp(2rem, 4vw, 3.25rem); }

.stack > * + * { margin-top: var(--stack, 1rem); }

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.6rem);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }
.grid--split { grid-template-columns: 1fr; }

@media (min-width: 960px) {
  .grid--split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }
}

.lede {
  font-size: clamp(1.0625rem, 1.2vw, 1.25rem);
  line-height: 1.68;
  color: var(--ink-soft);
}

.prose { max-width: 72ch; color: rgba(245, 247, 250, 0.82); }
.prose p + p { margin-top: 1rem; }
.prose strong { color: var(--ivory); }
.prose ul { display: grid; gap: 0.5rem; margin-top: 1rem; }
.prose ul li { position: relative; padding-inline-start: 1.15rem; }
.prose ul li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  transform: rotate(45deg);
  background: var(--wood);
}

/* ---------- 5. 刊头 / 头部 ---------- */
.skip-link {
  position: absolute;
  inset-inline-start: 50%;
  top: -4rem;
  transform: translateX(-50%);
  z-index: 120;
  padding: 0.7rem 1.25rem;
  border-radius: 0 0 12px 12px;
  background: var(--neon);
  color: #160A03;
  font-weight: 700;
  font-size: 0.95rem;
  transition: top 0.22s var(--ease-out);
}
.skip-link:focus { top: 0; }

.masthead {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 18, 32, 0.9);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--line);
}
.masthead::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 138, 75, 0.55), transparent);
  pointer-events: none;
}

.arena-progress {
  position: relative;
  height: 3px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}
.arena-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--neon) 68%, var(--amber));
  transition: transform 0.1s linear;
}

.masthead__rail {
  border-bottom: 1px solid rgba(201, 138, 75, 0.24);
  background: rgba(17, 31, 58, 0.62);
}
.masthead__rail-inner {
  width: min(calc(100% - var(--gutter) * 2), var(--shell-wide));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  padding: 0.5rem 0;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
}
.masthead__edition { color: rgba(245, 247, 250, 0.7); }
.masthead__utility {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--cyan);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
  animation: pulse-ring 2.4s ease-out infinite;
}
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(255, 90, 31, 0.62); }
  70% { box-shadow: 0 0 0 9px rgba(255, 90, 31, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 90, 31, 0); }
}

.masthead__plate-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.85rem, 2vw, 1.35rem) 0 0.45rem;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  text-align: center;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1;
  letter-spacing: 0.34em;
  text-indent: 0.34em;
  color: var(--ivory);
  transition: color 0.22s ease, text-shadow 0.22s ease;
}
.brand__tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  text-transform: uppercase;
  color: var(--cyan);
}
.brand:hover .brand__name,
.brand:focus-visible .brand__name {
  color: #ffffff;
  text-shadow: 0 0 24px rgba(34, 211, 238, 0.5);
}

.nav-toggle {
  display: none;
  position: absolute;
  inset-inline-end: 0;
  top: 50%;
  transform: translateY(-60%);
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  color: var(--ivory);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}
.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.26s var(--ease-out), opacity 0.2s ease, background 0.2s ease;
}
.nav-toggle[aria-expanded="true"] { border-color: var(--neon); color: var(--neon); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span { background: var(--neon); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.site-nav { display: block; border-top: 1px solid var(--line); }
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.1rem clamp(0.35rem, 2vw, 1.5rem);
  padding: 0.3rem 0 0.7rem;
}
.site-nav__item { display: block; }
.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.6rem 0.55rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(245, 247, 250, 0.72);
  transition: color 0.2s ease;
}
.site-nav a::after {
  content: "";
  position: absolute;
  inset-inline: 0.55rem;
  bottom: 0.3rem;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.28s var(--ease-out);
}
.site-nav a:hover { color: var(--ivory); }
.site-nav a:hover::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--ivory); }
.site-nav a[aria-current="page"]::after { background: var(--neon); transform: scaleX(1); }
.site-nav__num {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color 0.2s ease;
}
.site-nav a:hover .site-nav__num { color: var(--cyan); }
.site-nav a[aria-current="page"] .site-nav__num { color: var(--neon); }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .masthead__plate-inner { padding-inline: 5rem; }

  .site-nav {
    display: block;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    border-top-color: transparent;
    transition: max-height 0.34s ease, opacity 0.24s ease, border-color 0.24s ease;
  }
  .site-nav[data-open] {
    max-height: min(72vh, 32rem);
    opacity: 1;
    overflow-y: auto;
    border-top-color: var(--line);
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.35rem 0 0.85rem;
  }
  .site-nav__item { border-bottom: 1px solid var(--line-soft); }
  .site-nav__item:last-child { border-bottom: 0; }
  .site-nav a {
    width: 100%;
    justify-content: space-between;
    padding: 0.85rem 0.2rem;
    font-size: 1rem;
  }
  .site-nav a::after { display: none; }
  .site-nav a[aria-current="page"] { color: var(--neon); }
}

@media (max-width: 520px) {
  .masthead__rail-inner { font-size: 0.68rem; letter-spacing: 0.08em; }
  .masthead__edition { display: none; }
}

/* ---------- 6. 页脚 ---------- */
.court-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  border-top: 1px solid rgba(201, 138, 75, 0.38);
  background: linear-gradient(180deg, #0B1220, #0d1830 46%, #0B1220);
  overflow: hidden;
}
.court-footer__glow {
  position: absolute;
  inset: -42% -10% auto;
  height: 22rem;
  background: radial-gradient(closest-side, rgba(255, 90, 31, 0.18), transparent 72%);
  pointer-events: none;
}
.court-footer__board {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.75rem);
  padding-block: clamp(2.5rem, 6vw, 4rem);
}
@media (min-width: 720px) {
  .court-footer__board { grid-template-columns: 1.5fr 1fr 1.1fr; }
}
.court-footer__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1;
  letter-spacing: 0.2em;
}
.court-footer__summary {
  margin-top: 0.9rem;
  max-width: 44ch;
  font-size: 0.95rem;
  color: rgba(245, 247, 250, 0.7);
}
.court-footer__stamp { margin-top: 1.1rem; }
.stamp {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.78rem;
  border: 1px dashed rgba(201, 138, 75, 0.62);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--wood);
}
.court-footer__heading {
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}
.court-footer__list { display: grid; gap: 0.5rem; }
.court-footer__list a {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.95rem;
  color: rgba(245, 247, 250, 0.76);
  transition: color 0.2s ease;
}
.court-footer__list a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 1px;
  transform: rotate(45deg);
  background: rgba(201, 138, 75, 0.85);
  transition: background 0.2s ease;
}
.court-footer__list a:hover { color: var(--cyan); }
.court-footer__list a:hover::before { background: var(--cyan); }
.court-footer__contact {
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.95;
  color: var(--mist);
  word-break: break-word;
}
.court-footer__base {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  padding: 1rem 0 1.6rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--mist);
}
.court-footer__copy {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--ivory);
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, border-color 0.2s ease, color 0.2s ease;
}
.to-top[data-visible] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.to-top:hover { border-color: var(--neon); color: var(--neon); }

/* ---------- 7. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform 0.18s var(--ease-out), background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn--primary {
  background: var(--neon);
  color: #160A03;
  box-shadow: var(--shadow-pop);
}
.btn--primary:hover { background: #ff7440; transform: translateY(-2px); }
.btn--ghost {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ivory);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }
.btn--link { padding-inline: 0; color: var(--cyan); }
.btn--link:hover { color: var(--neon); }

.crumbs {
  padding-block: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.crumbs li { display: inline-flex; align-items: center; gap: 0.5rem; }
.crumbs li::after { content: "/"; color: rgba(124, 138, 165, 0.6); }
.crumbs li:last-child::after { content: ""; }
.crumbs a { border-bottom: 1px solid transparent; transition: color 0.2s ease, border-color 0.2s ease; }
.crumbs a:hover { color: var(--cyan); border-color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--ivory); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
}
.tag--live { color: var(--neon); background: rgba(255, 90, 31, 0.12); }
.tag--round { color: var(--cyan); background: rgba(34, 211, 238, 0.12); }
.tag--change { color: var(--amber); background: rgba(245, 184, 65, 0.12); }

.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.panel {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--tunnel);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}
.panel::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: clamp(1.25rem, 3vw, 2.25rem);
  width: 3px;
  height: 2.4rem;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--neon), transparent);
}
.panel--glass {
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.03));
  border-color: rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}
.panel--plain::before { display: none; }
.panel--wood { border-top-color: rgba(201, 138, 75, 0.55); }

.panel__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.panel__kicker::before {
  content: "";
  width: 1.6rem;
  height: 2px;
  background: var(--neon);
}
.panel__title { margin-top: 0.6rem; font-family: var(--font-display); font-weight: 900; font-size: var(--fs-h2); }
.panel__lead { margin-top: 0.7rem; max-width: 64ch; color: var(--ink-soft); }

.data-list { display: grid; gap: 0.5rem; }
.data-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.9rem;
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.2s ease, transform 0.2s var(--ease-out), background-color 0.2s ease;
}
.data-row:hover {
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.06);
  transform: translateX(3px);
}
.data-row__key {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.data-row__label { min-width: 0; color: var(--ivory); }
.data-row__value {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.score {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}
.score__sep { color: var(--mist); margin-inline: 0.35rem; }

.u-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- 8. 图片容器基础 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(140deg, #16233c, #0B1220 62%);
  isolation: isolate;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(34, 211, 238, 0.12), transparent 46%, rgba(11, 18, 32, 0.55));
}
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame__caption {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  z-index: 1;
  padding: 1.6rem 1rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(245, 247, 250, 0.88);
  background: linear-gradient(0deg, rgba(11, 18, 32, 0.92), transparent);
}

/* ---------- 9. 滚动协议 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s var(--ease-out);
}
.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-section] {
  position: relative;
  padding-inline-start: clamp(0px, 2.2vw, 1.9rem);
  transition: padding-inline-start 0.3s ease;
}
[data-section]::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, rgba(201, 138, 75, 0.4), rgba(201, 138, 75, 0));
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
[data-section].is-current::before {
  background: linear-gradient(180deg, var(--neon), rgba(34, 211, 238, 0.55));
  box-shadow: 0 0 18px rgba(255, 90, 31, 0.45);
}
@media (max-width: 620px) {
  [data-section] { padding-inline-start: 0; }
  [data-section]::before { display: none; }
}

/* ---------- 10. 工具类 ---------- */
.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;
}

/* ---------- 11. 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .has-js [data-reveal] { opacity: 1; transform: none; }
  .arena-progress__bar { transition: none; }
}