/* ==========================================================================
   必一体育 · BSPORTS — 共享样式表 /assets/site.css
   设计逻辑：夜赛深青绿连续画布 + 荧光黄绿强调，堆叠面板与框架式导航
   ========================================================================== */

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

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

body {
  margin: 0;
  min-height: 100vh;
}

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, picture { max-width: 100%; }

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

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

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

/* ---------- 2. 设计令牌 ---------- */
:root {
  --night: #0A2E28;
  --board: #123F37;
  --lime: #C8FF4D;
  --orange: #FF8A3D;
  --rose: #FF3F7F;
  --blue: #39A0FF;
  --turf: #1F6B54;
  --paper: #F3FFF9;
  --mist: #8FB5A8;
  --ink: #061A17;

  --line: rgba(200, 255, 77, .16);
  --line-soft: rgba(143, 181, 168, .22);
  --shell: min(100% - 2.25rem, 1240px);
  --radius-panel: 26px 6px 26px 6px;
  --radius-soft: 18px 4px 18px 4px;

  --font-heading: "Oswald", "Barlow Condensed", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shadow-panel: 0 30px 60px -50px rgba(0, 0, 0, .95);
}

/* ---------- 3. 基础排版与画布 ---------- */
body {
  background-color: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(15px, .38vw + 14px, 16.5px);
  line-height: 1.78;
  background-image:
    radial-gradient(120% 90% at 92% -12%, rgba(200, 255, 77, .10), transparent 58%),
    radial-gradient(90% 80% at -10% 108%, rgba(57, 160, 255, .12), transparent 60%),
    repeating-linear-gradient(90deg, rgba(31, 107, 84, .18) 0 72px, rgba(18, 63, 55, 0) 72px 144px);
  background-repeat: no-repeat, no-repeat, repeat;
}

::selection {
  background: var(--lime);
  color: var(--ink);
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: .005em;
  color: var(--paper);
}

h1 { font-size: clamp(2.05rem, 6.2vw, 4rem); line-height: 1.06; }
h2 { font-size: clamp(1.55rem, 3.8vw, 2.6rem); }
h3 { font-size: clamp(1.08rem, 2.1vw, 1.45rem); }

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

/* ---------- 4. 跳转链接与版心 ---------- */
.skip-link {
  position: fixed;
  left: 1rem;
  top: -120px;
  z-index: 200;
  padding: .7rem 1.15rem;
  border-radius: 0 0 14px 14px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  transition: top .2s ease;
}

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

.wrap {
  width: var(--shell);
  margin-inline: auto;
}

.site-main { display: block; }

#main-content { scroll-margin-top: 96px; }

.section {
  position: relative;
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.section--tight { padding-block: clamp(1.4rem, 4vw, 2.5rem); }

.stack { display: grid; gap: 1rem; }

.grid { display: grid; gap: clamp(1rem, 2.5vw, 1.75rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 215px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); }

.grid--split { grid-template-columns: 1fr; gap: clamp(1.5rem, 4vw, 3rem); }

@media (min-width: 900px) {
  .grid--split { grid-template-columns: 1.05fr .95fr; align-items: center; }
}

/* ---------- 5. 文本层级 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--lime);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lime);
}

.section__head {
  display: grid;
  gap: .7rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.lede {
  max-width: 52ch;
  color: rgba(243, 255, 249, .82);
  font-size: 1.02rem;
}

.prose { max-width: 60ch; }
.prose p + p { margin-top: 1rem; }

.mono {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--mist);
}

.note-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .72rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: .93rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: transform .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn--accent {
  background: var(--lime);
  color: var(--ink);
  box-shadow: 0 16px 32px -20px rgba(200, 255, 77, .9);
}

.btn--accent:hover { background: #d9ff7a; }

.btn--ghost {
  border-color: rgba(200, 255, 77, .5);
  color: var(--lime);
  background: rgba(200, 255, 77, .06);
}

.btn--ghost:hover { background: rgba(200, 255, 77, .16); }

.btn--quiet {
  border-color: rgba(143, 181, 168, .38);
  color: var(--paper);
}

.btn--quiet:hover { border-color: rgba(200, 255, 77, .55); color: var(--lime); }

.btn--sm { font-size: .82rem; padding: .52rem .95rem; }

/* ---------- 7. 堆叠面板 ---------- */
.panel {
  position: relative;
  background: linear-gradient(155deg, rgba(18, 63, 55, .92), rgba(10, 46, 40, .7));
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  padding: clamp(1.15rem, 3vw, 2rem);
  box-shadow: var(--shadow-panel);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease, background-color .25s ease;
}

.panel:hover,
.panel:focus-within {
  transform: translateY(-3px);
  border-color: rgba(200, 255, 77, .4);
  box-shadow: 0 34px 60px -46px rgba(200, 255, 77, .45);
}

.panel--flat {
  background: rgba(10, 46, 40, .5);
  box-shadow: none;
}

.panel--lime { border-left: 3px solid var(--lime); }
.panel--orange { border-left: 3px solid var(--orange); }
.panel--rose { border-left: 3px solid var(--rose); }
.panel--blue { border-left: 3px solid var(--blue); }
.panel--turf { border-left: 3px solid var(--turf); }

.panel__title {
  font-family: var(--font-heading);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 800;
  margin-bottom: .5rem;
}

/* ---------- 8. 数据与标签 ---------- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr));
  gap: clamp(.75rem, 2vw, 1.5rem);
}

.stat {
  display: grid;
  gap: .2rem;
  padding: .55rem 0 .55rem .9rem;
  border-left: 2px solid rgba(200, 255, 77, .35);
}

.stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.2vw, 2.6rem);
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.stat--orange .stat__num { color: var(--orange); }
.stat--rose .stat__num { color: var(--rose); }
.stat--blue .stat__num { color: var(--blue); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .26rem .62rem;
  border-radius: 999px;
  border: 1px solid rgba(143, 181, 168, .35);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.tag--lime { border-color: rgba(200, 255, 77, .5); color: var(--lime); background: rgba(200, 255, 77, .08); }
.tag--orange { border-color: rgba(255, 138, 61, .55); color: var(--orange); background: rgba(255, 138, 61, .1); }
.tag--rose { border-color: rgba(255, 63, 127, .55); color: var(--rose); background: rgba(255, 63, 127, .1); }
.tag--blue { border-color: rgba(57, 160, 255, .55); color: var(--blue); background: rgba(57, 160, 255, .1); }

/* ---------- 9. 短传连线与图形容器 ---------- */
.pass-line {
  position: relative;
  height: 1px;
  border: 0;
  margin: clamp(1.25rem, 3vw, 2rem) 0;
  background: linear-gradient(90deg, rgba(200, 255, 77, .55), rgba(200, 255, 77, 0) 72%);
}

.pass-line::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(200, 255, 77, .55);
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background:
    repeating-linear-gradient(90deg, rgba(31, 107, 84, .4) 0 28px, rgba(18, 63, 55, .45) 28px 56px),
    linear-gradient(160deg, var(--board), var(--night));
}

.media-frame img,
.media-frame picture,
.media-frame video,
.media-frame svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: .8rem 1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(6, 26, 23, 0), rgba(6, 26, 23, .9));
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--free { aspect-ratio: auto; }

.media-frame--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(200, 255, 77, .1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 255, 77, .1) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* ---------- 10. 面包屑与标签页 ---------- */
.crumbs { margin-block: .5rem 1.2rem; }

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.crumbs li { display: flex; align-items: center; }

.crumbs li + li::before {
  content: "/";
  margin-right: .45rem;
  color: rgba(143, 181, 168, .55);
}

.crumbs a { color: rgba(243, 255, 249, .82); }
.crumbs a:hover { color: var(--lime); }
.crumbs [aria-current="page"] { color: var(--lime); }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  padding-bottom: .7rem;
  border-bottom: 1px solid rgba(200, 255, 77, .18);
}

.tab {
  padding: .48rem .9rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--mist);
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}

.tab:hover { color: var(--lime); border-color: rgba(200, 255, 77, .3); }

.tab[aria-selected="true"] {
  background: rgba(200, 255, 77, .14);
  border-color: rgba(200, 255, 77, .5);
  color: var(--lime);
}

.tab-panel { padding-top: 1.25rem; }
.tab-panel[hidden] { display: none; }

/* ---------- 11. 页头：框架式导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(6, 26, 23, .97), rgba(18, 63, 55, .94));
  border-bottom: 1px solid rgba(200, 255, 77, .2);
  box-shadow: 0 22px 44px -34px rgba(0, 0, 0, .95);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--lime) 0 16%,
    var(--orange) 16% 27%,
    var(--rose) 27% 36%,
    var(--blue) 36% 47%,
    var(--turf) 47% 60%,
    rgba(200, 255, 77, .16) 60% 100%);
}

.site-header__frame {
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: .68rem clamp(.85rem, 2vw, 1.35rem);
  border-inline: 1px solid rgba(200, 255, 77, .16);
}

.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  flex: 0 0 auto;
}

.brand__mark {
  position: relative;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border: 1px solid rgba(200, 255, 77, .45);
  border-radius: 14px 5px 14px 5px;
  background: linear-gradient(150deg, rgba(200, 255, 77, .16), rgba(31, 107, 84, .28));
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 6px;
  background:
    linear-gradient(45deg, transparent 46%, rgba(200, 255, 77, .8) 46% 54%, transparent 54%),
    linear-gradient(-45deg, transparent 46%, rgba(200, 255, 77, .32) 46% 54%, transparent 54%);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow:
    20px 20px 0 0 var(--lime),
    20px 0 0 0 rgba(200, 255, 77, .6),
    0 20px 0 0 rgba(57, 160, 255, .85);
}

.brand__text {
  display: grid;
  gap: .05rem;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: .06em;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
}

.site-nav__link {
  position: relative;
  display: block;
  padding: .5rem .85rem;
  border-left: 1px solid rgba(143, 181, 168, .18);
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: rgba(243, 255, 249, .82);
  transition: color .18s ease, background-color .18s ease;
}

.site-nav__list li:first-child .site-nav__link { border-left: 0; }

.site-nav__link::after {
  content: "";
  position: absolute;
  left: .85rem;
  right: .85rem;
  bottom: .2rem;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s ease;
}

.site-nav__link:hover {
  color: var(--lime);
  background: rgba(200, 255, 77, .08);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] {
  color: var(--lime);
  background: rgba(200, 255, 77, .1);
}

.site-nav__cta { margin-left: .9rem; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  margin-left: auto;
  padding: .5rem .85rem;
  border: 1px solid rgba(200, 255, 77, .45);
  border-radius: 999px;
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: background-color .18s ease, border-color .18s ease;
}

.nav-toggle:hover { background: rgba(200, 255, 77, .12); }

.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }

.nav-toggle__bar {
  height: 2px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}

.site-header[data-open="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: .35rem;
    margin-left: 0;
    padding: 1rem clamp(1rem, 5vw, 1.75rem) 1.5rem;
    background: linear-gradient(180deg, rgba(18, 63, 55, .99), rgba(6, 26, 23, .99));
    border-bottom: 1px solid rgba(200, 255, 77, .35);
    box-shadow: 0 34px 60px -40px rgba(0, 0, 0, .95);
    max-height: calc(100vh - 74px);
    overflow-y: auto;
  }

  .site-nav[data-open="true"] { display: flex; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav__link {
    border-left: 0;
    border-top: 1px solid var(--line-soft);
    padding: .85rem .25rem;
    font-size: 1.02rem;
  }

  .site-nav__list li:first-child .site-nav__link { border-top: 0; }

  .site-nav__link::after {
    left: .25rem;
    right: auto;
    width: 38px;
  }

  .site-nav__cta {
    margin-left: 0;
    margin-top: .7rem;
    justify-content: center;
  }
}

/* ---------- 12. 页脚：堆叠画板 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  background: linear-gradient(180deg, var(--board), var(--ink) 78%);
  border-top: 1px solid rgba(200, 255, 77, .24);
  overflow: hidden;
}

.site-footer::before {
  content: "BSPORTS";
  position: absolute;
  right: -.08em;
  top: 30%;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(4.5rem, 17vw, 12rem);
  line-height: .78;
  letter-spacing: .02em;
  color: rgba(200, 255, 77, .055);
  pointer-events: none;
  user-select: none;
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
  padding-block: clamp(2.25rem, 6vw, 3.75rem) clamp(1.5rem, 4vw, 2.25rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1080px) {
  .site-footer__inner { grid-template-columns: 1.35fr .75fr .75fr 1.15fr; }
}

.site-footer__brand {
  display: grid;
  gap: .9rem;
  align-content: start;
  justify-items: start;
}

.site-footer__tagline {
  max-width: 26ch;
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.brand--footer .brand__mark { width: 34px; height: 34px; }

.brand--footer .brand__mark::after {
  box-shadow:
    16px 16px 0 0 var(--lime),
    16px 0 0 0 rgba(200, 255, 77, .6),
    0 16px 0 0 rgba(57, 160, 255, .85);
}

.footer-col {
  display: grid;
  gap: .8rem;
  align-content: start;
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-col__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(200, 255, 77, .45), transparent);
}

.footer-col__list { display: grid; gap: .15rem; }

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .3rem 0;
  color: rgba(243, 255, 249, .78);
  font-size: .95rem;
  transition: color .18s ease, transform .18s ease;
}

.footer-link::before {
  content: "";
  width: 10px;
  height: 2px;
  background: var(--mist);
  transition: width .18s ease, background-color .18s ease;
}

.footer-link:hover { color: var(--lime); transform: translateX(3px); }
.footer-link:hover::before { width: 18px; background: var(--lime); }

.footer-meta {
  display: grid;
  gap: .5rem;
  font-size: .88rem;
  color: rgba(243, 255, 249, .82);
  overflow-wrap: anywhere;
}

.footer-meta li {
  display: grid;
  grid-template-columns: 5.4rem 1fr;
  gap: .5rem;
  align-items: baseline;
  padding-top: .5rem;
  border-top: 1px solid var(--line-soft);
}

.footer-meta li:first-child { border-top: 0; padding-top: 0; }

.footer-meta__key {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.copy-btn {
  margin-top: .85rem;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .9rem;
  border: 1px dashed rgba(200, 255, 77, .5);
  border-radius: 999px;
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.copy-btn:hover { background: rgba(200, 255, 77, .12); }

.copy-btn.is-copied {
  border-style: solid;
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink);
}

.site-footer__legal {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
  padding-block: 1.1rem 1.6rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem 1.2rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.site-footer__legal a { color: var(--mist); }
.site-footer__legal a:hover { color: var(--lime); }

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.1rem;
}

.legal-links li { display: flex; align-items: center; }

.legal-links li + li::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 1.1rem;
  border-radius: 50%;
  background: rgba(200, 255, 77, .5);
}

.site-footer__copy { color: rgba(143, 181, 168, .9); }

.site-footer__icp {
  margin-left: auto;
  color: rgba(143, 181, 168, .9);
}

/* ---------- 13. 脚本驱动组件 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  z-index: 80;
  pointer-events: none;
  background: linear-gradient(90deg, var(--lime), var(--orange));
}

.to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem .95rem;
  border: 1px solid rgba(200, 255, 77, .45);
  border-radius: 999px;
  background: rgba(6, 26, 23, .92);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .22s ease, transform .22s ease, visibility .22s ease, background-color .18s ease;
}

.to-top:hover { background: rgba(200, 255, 77, .14); }

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease, transform .55s ease;
}

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

/* ---------- 14. 平板与手机细化 ---------- */
@media (max-width: 767px) {
  .site-header__frame {
    padding-inline: .7rem;
    gap: .6rem;
  }

  .brand__mark { width: 34px; height: 34px; }

  .brand__mark::after {
    box-shadow:
      16px 16px 0 0 var(--lime),
      16px 0 0 0 rgba(200, 255, 77, .6),
      0 16px 0 0 rgba(57, 160, 255, .85);
  }

  .brand__sub { letter-spacing: .14em; }

  .footer-meta li { grid-template-columns: 1fr; gap: .1rem; }

  .site-footer__icp { margin-left: 0; }
}

@media (min-width: 1024px) and (max-width: 1140px) {
  .site-nav__link { padding: .5rem .6rem; font-size: .88rem; }
}

/* ---------- 15. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .to-top { transition: none; }
}