/* ==========================================================================
   乐球官网 V4 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ========================================================================== */

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

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

body { margin: 0; }

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

ul, ol { margin: 0; padding: 0; }

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

button { font: inherit; color: inherit; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid #4DFF9F;
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 变量 ---------- */
:root {
  --ink: #05090C;
  --stand: #0C171C;
  --line: #1B2C33;
  --turf: #143528;
  --lamp: #4DFF9F;
  --volt: #29D8FF;
  --orange: #FF8A2B;
  --white: #EAF6F2;
  --mist: #9BAFA9;
  --paper: #F4F9F7;

  --body-text: #C3D4CE;

  --header-h: 72px;
  --container: 1280px;
  --radius-organic: 22px 6px 22px 6px;

  --font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC",
    Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    "Roboto Mono", monospace;
}

/* ---------- 基础排版 ---------- */
body {
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(20, 53, 40, 0.55), rgba(5, 9, 12, 0) 68%),
    radial-gradient(760px 480px at 92% 4%, rgba(41, 216, 255, 0.10), rgba(5, 9, 12, 0) 70%);
  background-repeat: no-repeat;
  color: var(--body-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(77, 255, 159, 0.28); color: var(--white); }

p, li, dd, dt { max-width: 68ch; }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  left: 16px;
  top: -120px;
  z-index: 200;
  padding: 0.7rem 1.15rem;
  background: var(--lamp);
  color: #04140C;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: 0 0 12px 12px;
  transition: top 0.22s ease;
}
.skip-link:focus { top: 0; }

/* ---------- 容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(18px, 5vw, 40px);
}

.section { padding-block: clamp(48px, 7vw, 92px); }
.section--tight { padding-block: clamp(28px, 4vw, 52px); }

.u-offset-header { padding-top: calc(var(--header-h) + clamp(24px, 5vw, 64px)); }

.grid-editorial {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 30px);
  align-items: start;
}
.col-content { grid-column: 1 / span 7; }
.col-note { grid-column: 9 / span 4; }
.col-half { grid-column: span 6; }
.col-wide { grid-column: 1 / -1; }

@media (max-width: 960px) {
  .col-content,
  .col-note,
  .col-half,
  .col-wide { grid-column: 1 / -1; }
}

/* ---------- 文本层级 ---------- */
.title-xl,
.title-lg,
.title-md {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1.06;
  margin: 0;
}
.title-xl { font-size: clamp(2.4rem, 6vw, 5rem); }
.title-lg { font-size: clamp(1.7rem, 3.6vw, 2.6rem); line-height: 1.14; }
.title-md { font-size: clamp(1.12rem, 2.1vw, 1.42rem); line-height: 1.3; letter-spacing: -0.01em; }

.lede {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.7;
  color: var(--mist);
  max-width: 46ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--volt);
  margin: 0;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  flex: 0 0 auto;
}

.mono { font-family: var(--font-mono); letter-spacing: 0.06em; }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb__list > li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: none;
}
.breadcrumb__list > li + li::before {
  content: "";
  display: block;
  width: 14px;
  height: 1px;
  background: var(--line);
}
.breadcrumb a { color: var(--volt); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--white); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.2rem;
  border: 1px solid transparent;
  border-radius: 12px 4px 12px 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease,
    border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}
.btn--signal {
  background: var(--orange);
  color: #1A0A00;
  box-shadow: 0 14px 34px -18px rgba(255, 138, 43, 0.95);
}
.btn--signal:hover {
  background: #FFA14F;
  transform: translateY(-1px);
  box-shadow: 0 20px 40px -20px rgba(255, 138, 43, 1);
}
.btn--lamp {
  background: var(--lamp);
  color: #04140C;
  box-shadow: 0 14px 34px -20px rgba(77, 255, 159, 0.9);
}
.btn--lamp:hover { background: #77FFB6; transform: translateY(-1px); }
.btn--ghost {
  background: rgba(12, 23, 28, 0.7);
  border-color: var(--line);
  color: var(--white);
}
.btn--ghost:hover { border-color: rgba(77, 255, 159, 0.6); color: var(--lamp); }

/* ---------- 状态点 ---------- */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--mist);
}
.status-dot--live {
  background: var(--lamp);
  box-shadow: 0 0 10px rgba(77, 255, 159, 0.9);
}

/* ---------- 入口卡片 ---------- */
.entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(160deg, rgba(20, 53, 40, 0.55), var(--stand) 55%, #080F12);
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.entry-card::before {
  content: "";
  position: absolute;
  left: clamp(18px, 2.4vw, 26px);
  top: 0;
  width: 44px;
  height: 2px;
  background: var(--lamp);
  opacity: 0.6;
  transition: width 0.3s ease, opacity 0.3s ease;
}
.entry-card:hover {
  border-color: rgba(77, 255, 159, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 26px 52px -36px rgba(77, 255, 159, 0.6);
}
.entry-card:hover::before { width: 88px; opacity: 1; }
.entry-card__code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--lamp);
}
.entry-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  color: var(--white);
  line-height: 1.3;
}
.entry-card__desc { margin: 0; font-size: 0.92rem; line-height: 1.7; color: var(--mist); }

/* ---------- 反白索引区 ---------- */
.inverse {
  background: var(--paper);
  color: #0A1512;
  border-radius: var(--radius-organic);
  padding: clamp(24px, 4vw, 52px);
}
.inverse a { color: #0B5C8C; }
.inverse .eyebrow { color: #0B7A4A; }

/* ---------- 可展开组 ---------- */
.disclosure-group { border-top: 1px solid var(--line); }
.disclosure { border-bottom: 1px solid var(--line); }
.disclosure__trigger {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 1.15rem 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 1.7vw, 1.15rem);
  line-height: 1.4;
}
.disclosure__trigger::after {
  content: "";
  margin-left: auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg);
  transition: transform 0.3s ease, border-color 0.3s ease;
  flex: 0 0 auto;
}
.disclosure[data-open] .disclosure__trigger::after {
  transform: rotate(-135deg);
  border-color: var(--lamp);
}
.disclosure__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.36s ease;
}
.disclosure[data-open] .disclosure__panel { grid-template-rows: 1fr; }
.disclosure__inner { overflow: hidden; }
.disclosure__inner > *:last-child { margin-bottom: 1.3rem; }

/* ---------- 图片容器基础规则 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  background: linear-gradient(158deg, var(--turf), var(--stand) 52%, #070E10);
}
.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 0.25rem 0.6rem;
  background: rgba(5, 9, 12, 0.78);
  border: 1px solid var(--line);
  border-radius: 8px 3px 8px 3px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--lamp);
}

/* ---------- 显现动效 ---------- */
.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 0.7, 0.3, 1);
}
.reveal-ready [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s ease, border-color 0.35s ease,
    box-shadow 0.35s ease;
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(5, 9, 12, 0.9), rgba(5, 9, 12, 0));
  opacity: 1;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.site-header.is-solid {
  background-color: rgba(6, 12, 15, 0.95);
  border-bottom-color: var(--line);
  box-shadow: 0 18px 40px -34px rgba(0, 0, 0, 0.95);
}
.site-header.is-solid::before { opacity: 0; }

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(27, 44, 51, 0.6);
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.site-header.is-solid .header-progress { opacity: 1; }
.header-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--lamp), var(--volt) 68%, var(--orange));
  transition: transform 0.12s linear;
}

.header-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  min-height: var(--header-h);
  padding: 10px clamp(18px, 5vw, 40px);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
}

/* ---------- 品牌 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--white);
}
.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 14px 4px 14px 4px;
  background: radial-gradient(120% 120% at 25% 15%,
    rgba(77, 255, 159, 0.22), rgba(20, 53, 40, 0.92) 55%, #060F0C 100%);
}
.brand__mark::before {
  content: "";
  position: absolute;
  left: 7px;
  right: 7px;
  bottom: 9px;
  height: 1px;
  background: linear-gradient(90deg, var(--lamp), rgba(77, 255, 159, 0));
}
.brand__mark::after {
  content: "";
  position: absolute;
  right: 7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-top: 1px solid var(--volt);
  border-right: 1px solid var(--volt);
  border-radius: 0 6px 0 0;
  opacity: 0.85;
}
.brand__lamp {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lamp);
  box-shadow: 0 0 10px var(--lamp), 0 0 0 4px rgba(77, 255, 159, 0.12);
  animation: lamp-pulse 3.2s ease-in-out infinite;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--white);
}
.brand__sub {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  color: var(--mist);
}

@keyframes lamp-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 10px var(--lamp), 0 0 0 4px rgba(77, 255, 159, 0.12); }
  50% { opacity: 0.62; box-shadow: 0 0 4px var(--lamp), 0 0 0 7px rgba(77, 255, 159, 0.05); }
}

/* ---------- 导航（移动优先：抽屉） ---------- */
.site-nav {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--header-h);
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  padding: 10px clamp(18px, 5vw, 40px) 26px;
  background: linear-gradient(180deg, #08120F 0%, #060D0F 100%);
  border-bottom: 1px solid var(--line);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity 0.26s ease, transform 0.26s ease, visibility 0.26s ease;
}
.site-header[data-open] .site-nav {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
}
.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-nav__link {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 14px 12px;
  border-radius: 12px 4px 12px 4px;
  color: var(--mist);
  font-size: 1.02rem;
  text-decoration: none;
  transition: color 0.22s ease, background-color 0.22s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--white); background: rgba(12, 23, 28, 0.85); }
.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--volt);
  flex: 0 0 auto;
}
.site-nav__label { flex: 1 1 auto; }

.site-nav__item--anchor .site-nav__link { color: var(--lamp); }
.site-nav__item--anchor .site-nav__link::after {
  content: "";
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--lamp);
  box-shadow: 0 0 10px var(--lamp);
}
.site-nav__item--anchor .site-nav__idx { color: var(--lamp); }

.site-nav__link[aria-current="page"] {
  color: var(--white);
  background: rgba(77, 255, 159, 0.09);
}
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--lamp); }

/* ---------- 头部操作区 ---------- */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
}
.header-cta {
  white-space: nowrap;
  font-size: 0.8rem;
  padding: 0.58rem 0.72rem;
  border-radius: 10px 3px 10px 3px;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.72rem;
  background: rgba(12, 23, 28, 0.8);
  border: 1px solid var(--line);
  border-radius: 12px 4px 12px 4px;
  color: var(--white);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.24s ease, color 0.24s ease;
}
.nav-toggle:hover { border-color: rgba(77, 255, 159, 0.55); color: var(--lamp); }
.nav-toggle__lines { display: grid; gap: 5px; width: 18px; }
.nav-toggle__lines span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--lamp);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.site-header[data-open] .nav-toggle {
  border-color: rgba(77, 255, 159, 0.6);
  color: var(--lamp);
}
.site-header[data-open] .nav-toggle__lines span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}
.site-header[data-open] .nav-toggle__lines span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ---------- 桌面端导航 ---------- */
@media (min-width: 1024px) {
  .site-nav {
    position: static;
    flex: 1 1 auto;
    display: flex;
    justify-content: flex-end;
    max-height: none;
    overflow: visible;
    padding: 0;
    background: none;
    border: 0;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition: none;
  }
  .site-nav__list { flex-direction: row; align-items: center; gap: 2px; }
  .site-nav__link {
    position: relative;
    padding: 0.6rem 0.7rem;
    font-size: 0.92rem;
    border-radius: 10px 3px 10px 3px;
  }
  .site-nav__label { flex: 0 0 auto; }
  .site-nav__item--anchor .site-nav__link { padding-right: 0.85rem; gap: 0.5rem; }
  .site-nav__link[aria-current="page"] { background: rgba(77, 255, 159, 0.07); }
  .site-nav__link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 1px;
    height: 2px;
    border-radius: 2px;
    background: var(--lamp);
  }
  .header-actions { margin-left: 0; gap: 0.7rem; }
  .header-cta { font-size: 0.9rem; padding: 0.68rem 1.05rem; border-radius: 12px 4px 12px 4px; }
  .nav-toggle { display: none; }
}

@media (max-width: 420px) {
  .header-cta { font-size: 0.74rem; padding: 0.5rem 0.6rem; }
  .nav-toggle__text { display: none; }
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(60px, 9vw, 120px);
  padding-top: clamp(36px, 5vw, 62px);
  background: linear-gradient(180deg, #07110E 0%, #0A151A 46%, var(--ink) 100%);
  border-top: 1px solid var(--line);
  color: var(--mist);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(77, 255, 159, 0),
    var(--lamp) 20%, var(--volt) 55%, rgba(255, 138, 43, 0.9) 86%,
    rgba(255, 138, 43, 0));
  opacity: 0.85;
}
.site-footer::after {
  content: "";
  position: absolute;
  top: -220px;
  right: -140px;
  width: min(560px, 80vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(41, 216, 255, 0.16), rgba(41, 216, 255, 0) 68%);
  pointer-events: none;
}

.footer-head {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 26px;
  padding-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--line);
}
.footer-head__line {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-serif);
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--mist);
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 44px);
  padding-block: clamp(28px, 4vw, 50px);
}
@media (min-width: 600px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 1.1fr 1fr 1.55fr 1fr; }
}

.footer-col { min-width: 0; }
.footer-col__title {
  margin: 0 0 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lamp);
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.footer-links li { max-width: none; }
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--mist);
  font-size: 0.94rem;
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-links a::before {
  content: "";
  width: 12px;
  height: 1px;
  flex: 0 0 auto;
  background: var(--line);
  transition: width 0.22s ease, background-color 0.22s ease;
}
.footer-links a:hover { color: var(--white); }
.footer-links a:hover::before { width: 22px; background: var(--lamp); }

.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
  font-size: 0.92rem;
}
.footer-contact li { display: grid; gap: 0.15rem; max-width: 42ch; }
.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--volt);
}
.footer-contact__val {
  color: var(--mist);
  line-height: 1.65;
  word-break: break-word;
}

.footer-icp {
  margin: 1.05rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.footer-bar {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 20px 26px;
  border-top: 1px solid var(--line);
}
.footer-bar__motto {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--white);
  max-width: none;
}
.footer-bar__meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  max-width: none;
}
.footer-bar__version {
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 8px 3px 8px 3px;
  color: var(--lamp);
}

/* ==========================================================================
   正文容器
   ========================================================================== */
.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.78;
  color: var(--body-text);
}
.prose h2,
.prose h3 {
  font-family: var(--font-display);
  color: var(--white);
  letter-spacing: -0.01em;
  line-height: 1.28;
  margin: 2.1em 0 0.7em;
}
.prose h2 { font-size: clamp(1.32rem, 2.4vw, 1.78rem); }
.prose h3 { font-size: 1.1rem; }
.prose p { margin: 0 0 1.15em; max-width: none; }
.prose a { color: var(--volt); text-decoration: none; }
.prose a:hover { text-decoration: underline; }
.prose ul,
.prose ol { margin: 0 0 1.2em; padding-left: 1.25em; }
.prose li { margin: 0.35em 0; max-width: none; }
.prose blockquote {
  margin: 1.6em 0;
  padding: 0.15em 0 0.15em 1.1em;
  border-left: 2px solid var(--lamp);
  font-family: var(--font-serif);
  font-size: 1.04rem;
  line-height: 1.72;
  color: var(--mist);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  padding: 0.1em 0.4em;
  background: var(--stand);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--lamp);
}
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }

/* ==========================================================================
   动效降级
   ========================================================================== */
@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;
  }
  .reveal-ready [data-reveal] { opacity: 1 !important; transform: none !important; }
}