/* ==========================================================================
   必一赛场 · 共享站点样式 /assets/site.css
   夜间赛场指挥中心：深墨绿分区 + 荧光青柠数据高亮 + 极细边界
   ========================================================================== */

:root {
  /* 色彩 */
  --ink-900: #05140F;
  --ink-800: #071C16;
  --panel-700: #0B2A20;
  --panel-600: #10382B;
  --lime-400: #C6FF4A;
  --lime-300: #A8F02D;
  --amber-500: #FF8A3D;
  --alert-500: #FF5A3C;
  --mint-200: #D8FFE8;
  --fog-400: #8FB3A6;
  --edge-500: #2B5A48;
  --white: #F7FFFB;

  /* 结构 */
  --rail-w: 248px;
  --bar-h: 56px;
  --gutter: clamp(18px, 4vw, 56px);
  --gap: 24px;
  --radius: 2px;
  --shell-max: 1180px;

  /* 字体 */
  --font-display: Oswald, "Barlow Condensed", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  /* 字号 */
  --step-hero: clamp(2.6rem, 6vw, 5.6rem);
  --step-h1: clamp(2rem, 4vw, 3.6rem);
  --step-h2: clamp(1.5rem, 2.6vw, 2.4rem);
  --step-h3: 1.25rem;
  --step-body: 1rem;
  --step-small: 0.875rem;
  --step-micro: 0.75rem;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

ul, ol {
  list-style: none;
  padding: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

[hidden] {
  display: none !important;
}

/* ---------- 基础版式 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(90deg, rgba(43, 90, 72, 0.16) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(43, 90, 72, 0.09) 0 1px, transparent 1px 96px),
    radial-gradient(120% 80% at 100% 0%, rgba(198, 255, 74, 0.05), transparent 62%);
  background-attachment: fixed;
  color: var(--mint-200);
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.78;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--white);
}

h1 { font-size: var(--step-h1); }
h2 { font-size: var(--step-h2); }
h3 { font-size: var(--step-h3); }

p {
  margin-bottom: 1em;
}

a {
  color: var(--mint-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

a:hover,
a:focus-visible {
  color: var(--lime-400);
}

strong {
  color: var(--white);
  font-weight: 700;
}

::selection {
  background: var(--lime-400);
  color: var(--ink-900);
}

:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-160%);
  padding: 10px 18px;
  background: var(--lime-400);
  color: var(--ink-900);
  border: 1px solid var(--lime-400);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: var(--step-micro);
  letter-spacing: 0.14em;
  transition: transform 0.22s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--ink-900);
  outline-offset: 3px;
}

/* ==========================================================================
   页头 · 左侧球员通道
   ========================================================================== */
.rail {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  z-index: 80;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px 18px 26px;
  background: linear-gradient(
    180deg,
    rgba(11, 42, 32, 0.58) 0%,
    rgba(5, 20, 15, 0.92) 58%,
    var(--ink-900) 100%
  );
  border-inline-end: 1px solid rgba(43, 90, 72, 0.55);
  overflow-y: auto;
  overscroll-behavior: contain;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}

.rail[data-stuck="true"] {
  background: var(--ink-900);
  border-inline-end-color: var(--edge-500);
  box-shadow: inset -1px 0 0 rgba(198, 255, 74, 0.07);
}

/* 状态行 */
.rail__status {
  display: flex;
  align-items: center;
  gap: 9px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(43, 90, 72, 0.45);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
  color: var(--fog-400);
}

.rail__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime-400);
  box-shadow: 0 0 0 3px rgba(198, 255, 74, 0.14);
  animation: railPulse 2.8s ease-in-out infinite;
}

.rail__status-text {
  display: block;
}

@keyframes railPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(198, 255, 74, 0.14); }
  50%      { box-shadow: 0 0 0 7px rgba(198, 255, 74, 0.03); }
}

/* 品牌 */
.rail__brand {
  flex: none;
}

.rail__mark {
  display: flex;
  align-items: center;
  gap: 11px;
  border-bottom: 0;
  color: var(--white);
}

.rail__mark:hover,
.rail__mark:focus-visible {
  color: var(--white);
}

.rail__mark-num {
  flex: none;
  width: 34px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--lime-400);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 50% 100%, 0 70%);
  transition: background 0.2s var(--ease);
}

.rail__mark:hover .rail__mark-num {
  background: var(--lime-300);
}

.rail__mark-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1.1;
}

.rail__name {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--white);
}

.rail__tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fog-400);
}

/* 移动端抽屉按钮 */
.rail__toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  color: var(--mint-200);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.rail__toggle:hover {
  border-color: var(--lime-400);
  color: var(--lime-400);
}

.rail__toggle-bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
  height: 14px;
}

.rail__toggle-bars i {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  transition: transform 0.26s var(--ease), opacity 0.26s var(--ease);
}

.rail__toggle-text {
  white-space: nowrap;
}

/* 导航 */
.rail__nav {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1 1 auto;
  min-height: 0;
}

.rail__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px 9px 8px;
  border: 0;
  border-left: 2px solid transparent;
  color: var(--mint-200);
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  transition: background 0.22s var(--ease), color 0.22s var(--ease),
    border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.rail__link:hover,
.rail__link:focus-visible {
  background: rgba(198, 255, 74, 0.07);
  border-left-color: var(--lime-400);
  color: var(--lime-400);
  transform: translateX(2px);
}

.rail__link[aria-current="page"] {
  background: linear-gradient(90deg, rgba(198, 255, 74, 0.11), transparent 80%);
  border-left-color: var(--lime-400);
  color: var(--lime-400);
  transform: none;
}

.rail__idx {
  flex: none;
  min-width: 22px;
  padding: 1px 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--fog-400);
  transition: background 0.22s var(--ease), color 0.22s var(--ease);
}

.rail__link[aria-current="page"] .rail__idx {
  background: var(--lime-400);
  color: var(--ink-900);
}

.rail__label {
  min-width: 0;
}

/* 阅读进度 */
.rail__meta {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(43, 90, 72, 0.4);
}

.rail__meta-key {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fog-400);
}

.rail__progress {
  display: block;
  position: relative;
  height: 2px;
  width: 100%;
  background: rgba(43, 90, 72, 0.55);
  overflow: hidden;
}

.rail__progress-bar {
  display: block;
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 0;
  background: linear-gradient(90deg, var(--lime-300), var(--lime-400));
}

/* 通道 CTA */
.rail__cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--lime-400);
  border-radius: var(--radius);
  background: var(--lime-400);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  transition: background 0.22s var(--ease), color 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}

.rail__cta::after {
  content: "→";
  font-size: 0.95em;
  line-height: 1;
}

.rail__cta:hover,
.rail__cta:focus-visible {
  background: var(--lime-300);
  border-color: var(--lime-300);
  color: var(--ink-900);
  box-shadow: 0 0 0 3px rgba(198, 255, 74, 0.16);
}

/* 桌面端：内容整体右移，让开通道 */
@media (min-width: 1024px) {
  body {
    padding-inline-start: var(--rail-w);
  }
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-foot {
  position: relative;
  margin-top: clamp(56px, 8vw, 96px);
  background: var(--ink-900);
  border-top: 1px solid var(--edge-500);
  overflow: hidden;
}

.site-foot::before {
  content: "2";
  position: absolute;
  inset-inline-end: -3%;
  inset-block-end: -22%;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(18rem, 40vw, 32rem);
  line-height: 0.7;
  color: var(--lime-400);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
}

.site-foot__inner {
  position: relative;
  z-index: 1;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) var(--gutter) 28px;
}

.site-foot__top {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.35fr);
  gap: clamp(28px, 5vw, 64px);
}

.site-foot__mark {
  display: inline-block;
  margin-bottom: 16px;
  padding: 3px 9px;
  border: 1px solid rgba(198, 255, 74, 0.42);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lime-400);
}

.site-foot__name {
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
}

.site-foot__desc {
  max-width: 42ch;
  margin-bottom: 0;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--fog-400);
}

.site-foot__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 4vw, 48px);
}

.site-foot__col-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(43, 90, 72, 0.6);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fog-400);
}

.site-foot__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-foot__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 0;
  font-size: var(--step-small);
  color: var(--mint-200);
}

.site-foot__link::before {
  content: "";
  flex: none;
  width: 6px;
  height: 1px;
  background: var(--edge-500);
  transition: width 0.22s var(--ease), background 0.22s var(--ease);
}

.site-foot__link:hover::before,
.site-foot__link:focus-visible::before {
  width: 14px;
  background: var(--lime-400);
}

.site-foot__contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px 28px;
  margin-top: clamp(32px, 5vw, 52px);
  padding-top: 24px;
  border-top: 1px solid rgba(43, 90, 72, 0.6);
}

.site-foot__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.site-foot__item--wide {
  grid-column: span 1;
}

.site-foot__key {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fog-400);
}

.site-foot__val {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mint-200);
  word-break: break-word;
}

.site-foot__note {
  margin-top: 20px;
  max-width: 68ch;
  font-size: var(--step-micro);
  line-height: 1.8;
  color: var(--fog-400);
}

.site-foot__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(43, 90, 72, 0.6);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--fog-400);
}

.site-foot__legal-item {
  color: var(--fog-400);
}

.site-foot__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.site-foot__legal-links a {
  border-bottom: 0;
  color: var(--fog-400);
  font-size: 0.68rem;
}

.site-foot__legal-links a:hover,
.site-foot__legal-links a:focus-visible {
  color: var(--lime-400);
}

/* ==========================================================================
   通用布局与组件（页面阶段使用）
   ========================================================================== */
.page-shell {
  position: relative;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(28px, 4vw, 52px) var(--gutter) clamp(56px, 7vw, 88px);
}

/* 面包屑 */
.breadcrumb {
  margin-bottom: 26px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--fog-400);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--edge-500);
}

.breadcrumb a {
  border-bottom: 0;
  color: var(--fog-400);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--lime-400);
}

/* 章节标题行 */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 24px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--edge-500);
}

.section-head h2,
.section-head h3 {
  margin: 0;
}

/* 面板 */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel-700);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(216, 255, 232, 0.03),
    0 18px 42px -34px rgba(0, 0, 0, 0.95);
}

.panel--raise {
  background: var(--panel-600);
}

.panel--note {
  background: transparent;
  border-style: dashed;
  box-shadow: none;
}

/* 网格 */
.grid {
  display: grid;
  gap: var(--gap);
}

.grid--split {
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
}

.grid--thirds {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* 行式延伸入口 */
.index-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border: 1px solid var(--edge-500);
  border-inline-start: 2px solid var(--lime-400);
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(198, 255, 74, 0.07), transparent 65%);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--mint-200);
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease),
    transform 0.22s var(--ease);
}

.index-strip::after {
  content: "→";
  flex: none;
  color: var(--lime-400);
}

.index-strip:hover,
.index-strip:focus-visible {
  border-color: var(--lime-400);
  background: linear-gradient(90deg, rgba(198, 255, 74, 0.16), transparent 72%);
  color: var(--white);
  transform: translateX(3px);
}

/* 指标卡 */
.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 18px;
  background: var(--panel-600);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
}

.metric__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--lime-400);
}

.metric__label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog-400);
}

.metric--amber .metric__value {
  color: var(--amber-500);
}

.metric--alert .metric__value {
  color: var(--alert-500);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.6;
  color: var(--fog-400);
}

.tag--lime {
  background: var(--lime-400);
  border-color: var(--lime-400);
  color: var(--ink-900);
}

.tag--amber {
  border-color: rgba(255, 138, 61, 0.55);
  color: var(--amber-500);
}

.tag--alert {
  border-color: rgba(255, 90, 60, 0.55);
  color: var(--alert-500);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: transparent;
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  color: var(--mint-200);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease),
    background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--lime-400);
  background: rgba(198, 255, 74, 0.08);
  color: var(--lime-400);
}

.btn--lime {
  background: var(--lime-400);
  border-color: var(--lime-400);
  color: var(--ink-900);
}

.btn--lime:hover,
.btn--lime:focus-visible {
  background: var(--lime-300);
  border-color: var(--lime-300);
  color: var(--ink-900);
  box-shadow: 0 0 0 3px rgba(198, 255, 74, 0.16);
}

.btn--ghost {
  border-color: rgba(43, 90, 72, 0.75);
  color: var(--fog-400);
}

/* 锚点目录 */
.anchor-list {
  display: flex;
  flex-direction: column;
}

.anchor-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(43, 90, 72, 0.4);
  font-size: 0.92rem;
  color: var(--mint-200);
}

.anchor-list a:hover,
.anchor-list a:focus-visible {
  color: var(--lime-400);
}

/* 手风琴 */
.accordion {
  border-top: 1px solid var(--edge-500);
}

.accordion__item {
  border-bottom: 1px solid var(--edge-500);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 16px 0;
  background: none;
  border: 0;
  text-align: start;
  color: var(--mint-200);
  font-family: var(--font-body);
  font-size: 1rem;
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.accordion__trigger::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--lime-400);
}

.accordion__trigger[aria-expanded="true"] {
  color: var(--lime-400);
}

.accordion__trigger[aria-expanded="true"]::after {
  content: "−";
}

.accordion__panel {
  padding: 0 0 16px;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--fog-400);
}

/* 图片容器（全站唯一图片占位基类） */
.figure-frame {
  position: relative;
  overflow: hidden;
  background: var(--panel-700);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
}

.figure-frame__media {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background:
    repeating-linear-gradient(135deg, rgba(43, 90, 72, 0.34) 0 2px, transparent 2px 11px),
    radial-gradient(85% 85% at 22% 18%, rgba(198, 255, 74, 0.1), transparent 62%),
    linear-gradient(160deg, var(--panel-700), var(--ink-800));
  color: var(--fog-400);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.figure-frame__media img,
.figure-frame__media picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.figure-frame__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--edge-500);
  font-size: var(--step-micro);
  line-height: 1.7;
  color: var(--fog-400);
}

.figure-frame--wide .figure-frame__media {
  aspect-ratio: 21 / 9;
}

.figure-frame--tall .figure-frame__media {
  aspect-ratio: 4 / 5;
}

/* 超大序号水印 */
.anchor-two {
  position: absolute;
  z-index: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(7rem, 22vw, 18rem);
  line-height: 0.78;
  letter-spacing: -0.04em;
  color: var(--lime-400);
  opacity: 0.1;
  pointer-events: none;
  user-select: none;
}

/* 长正文 */
.prose {
  max-width: 68ch;
  line-height: 1.85;
}

.prose p {
  margin-bottom: 1.1em;
}

.prose h2,
.prose h3 {
  margin-top: 1.8em;
  margin-bottom: 0.6em;
}

.prose a {
  border-bottom-color: var(--edge-500);
}

.prose a:hover,
.prose a:focus-visible {
  border-bottom-color: var(--lime-400);
}

.prose ul,
.prose ol {
  margin: 0 0 1.1em;
  padding-inline-start: 1.3em;
}

.prose ul {
  list-style: square;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.4em;
}

.prose li::marker {
  color: var(--lime-400);
  font-family: var(--font-mono);
}

/* 回到顶部 */
.to-top {
  position: fixed;
  inset-inline-end: 20px;
  inset-block-end: 20px;
  z-index: 70;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--ink-900);
  border: 1px solid var(--edge-500);
  border-radius: 50%;
  color: var(--lime-400);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
    visibility 0.28s var(--ease), border-color 0.2s var(--ease),
    background 0.2s var(--ease);
}

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

.to-top:hover,
.to-top:focus-visible {
  background: var(--panel-700);
  border-color: var(--lime-400);
}

/* ---------- 滚动显现 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.52s var(--ease), transform 0.52s var(--ease);
  will-change: opacity, transform;
}

html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1119px) {
  .grid--split {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  }
}

@media (max-width: 1023px) {
  :root {
    --rail-w: 0px;
  }

  body {
    padding-inline-start: 0;
    padding-block-start: var(--bar-h);
  }

  .rail {
    inset: 0 0 auto 0;
    width: auto;
    height: var(--bar-h);
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 0 14px;
    background: var(--ink-900);
    border-inline-end: 0;
    border-bottom: 1px solid var(--edge-500);
    overflow: visible;
  }

  .rail[data-stuck="true"] {
    box-shadow: 0 1px 0 rgba(198, 255, 74, 0.07);
  }

  .rail__status {
    display: none;
  }

  .rail__brand {
    min-width: 0;
  }

  .rail__mark {
    gap: 9px;
  }

  .rail__mark-num {
    width: 26px;
    height: 30px;
    font-size: 1.15rem;
  }

  .rail__name {
    font-size: 1rem;
    letter-spacing: 0.12em;
  }

  .rail__tag {
    font-size: 0.54rem;
    letter-spacing: 0.18em;
  }

  .rail__toggle {
    display: inline-flex;
    margin-inline-start: auto;
  }

  .rail[data-open] .rail__toggle-bars i:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
  }

  .rail[data-open] .rail__toggle-bars i:nth-child(2) {
    opacity: 0;
  }

  .rail[data-open] .rail__toggle-bars i:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
  }

  .rail__nav {
    position: fixed;
    inset: var(--bar-h) 0 0 0;
    display: none;
    flex-direction: column;
    gap: 18px;
    padding: 20px var(--gutter) 40px;
    background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
    border-top: 1px solid var(--edge-500);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .rail[data-open] .rail__nav {
    display: flex;
  }

  .rail__list {
    gap: 0;
  }

  .rail__link {
    padding: 15px 8px;
    font-size: 1rem;
    border-left-width: 2px;
    border-bottom: 1px solid rgba(43, 90, 72, 0.35);
  }

  .rail__link:hover,
  .rail__link:focus-visible {
    transform: none;
  }

  .rail__idx {
    min-width: 26px;
    font-size: 0.7rem;
  }

  .rail__meta {
    margin-top: 4px;
  }

  .rail__cta {
    justify-content: center;
    padding: 14px 16px;
    font-size: 0.82rem;
  }

  .rail__cta::after {
    content: none;
  }

  .site-foot__top {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid--split,
  .grid--thirds {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 767px) {
  body {
    font-size: 0.96rem;
  }

  .site-foot__cols {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .site-foot__contact {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-foot__legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .site-foot__legal-links {
    gap: 6px 16px;
  }

  .to-top {
    inset-inline-end: 14px;
    inset-block-end: 14px;
    width: 40px;
    height: 40px;
  }

  .index-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .section-head {
    align-items: flex-start;
  }
}

/* ==========================================================================
   可访问性
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .rail__dot {
    animation: none;
    box-shadow: 0 0 0 3px rgba(198, 255, 74, 0.14);
  }

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