/* ===== 必赢体育 · 共享站点样式 /assets/site.css ===== */

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

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

body {
  margin: 0;
  background-color: #071C16;
  background-image:
    linear-gradient(to right, rgba(46, 74, 64, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 74, 64, 0.16) 1px, transparent 1px);
  background-size: 88px 88px;
  color: #F4F7F2;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  letter-spacing: 0.005em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #F4F7F2;
}

p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
img, svg, video { max-width: 100%; height: auto; }
a { color: #C6FF3D; }
button { font: inherit; }
table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid #C6FF3D;
  outline-offset: 3px;
}

::selection {
  background: #C6FF3D;
  color: #071C16;
}

#main-content {
  display: block;
  scroll-margin-top: 132px;
}

:root {
  --ink: #071C16;
  --panel: #111613;
  --panel-2: #0E2A22;
  --lime: #C6FF3D;
  --amber: #FFB84D;
  --paper: #F4F7F2;
  --muted: #A7B4AE;
  --line: #2E4A40;
  --tag-blue: #5B7C8D;
  --tag-purple: #7A6A8F;
  --tag-clay: #A46A5A;
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 48px);
  --block: clamp(36px, 5vw, 76px);
}

/* ===== 通用容器与工具类 ===== */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.serif { font-family: var(--font-serif); }
.lede {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.7;
  color: var(--muted);
  max-width: 62ch;
}

.note {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.footnote {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ===== 跳过链接 ===== */
.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 999;
  padding: 12px 18px;
  background: var(--lime);
  color: #071C16;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ===== 页头 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(7, 28, 22, 0.97) 0%, rgba(7, 28, 22, 0.78) 62%, rgba(7, 28, 22, 0) 100%);
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.site-header[data-scrolled="true"] {
  background: var(--ink);
  border-bottom-color: var(--line);
  box-shadow: 0 22px 48px -34px rgba(0, 0, 0, 0.95);
}

.header-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--lime), var(--amber));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.12s linear;
  pointer-events: none;
}

.status-rail {
  background: rgba(17, 22, 19, 0.88);
  border-bottom: 1px solid var(--line);
}

.status-rail__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  min-height: 38px;
  padding-block: 6px;
}

.status-rail__note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.status-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(198, 255, 61, 0.14);
}

.status-rail__list {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.status-rail__link {
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.status-rail__link:hover,
.status-rail__link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.header-shell {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.2vw, 30px);
  min-height: 74px;
  padding-block: 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
  color: var(--paper);
  text-decoration: none;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--lime);
  color: #071C16;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.05em;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.06em;
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.primary-nav {
  margin-left: auto;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-decoration: none;
  opacity: 0.82;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 2px;
  height: 2px;
  background: var(--lime);
  transition: right 0.24s ease;
}

.primary-nav__link:hover {
  opacity: 1;
}

.primary-nav__link:hover::after {
  right: 0;
}

.primary-nav__link[aria-current="page"] {
  color: var(--lime);
  opacity: 1;
}

.primary-nav__link[aria-current="page"]::after {
  right: 0;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.tool-button {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  padding: 0 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.tool-button:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.tool-button[aria-expanded="true"] {
  color: var(--lime);
  border-color: var(--lime);
  background: rgba(198, 255, 61, 0.08);
}

.tool-button__icon {
  position: relative;
  flex: none;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.tool-button__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -2px;
  width: 7px;
  height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
}

.tool-button__label {
  white-space: nowrap;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  background: var(--lime);
  border: 1px solid var(--lime);
  color: #071C16;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: transparent;
  color: var(--lime);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 40px;
  padding: 0;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--paper);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ===== 站内检索面板 ===== */
.search-panel {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 6;
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 40px 70px -46px rgba(0, 0, 0, 0.95);
}

.search-panel[hidden] {
  display: none;
}

.search-panel__inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding: 18px var(--gutter) 22px;
  display: grid;
  gap: 12px;
}

.search-field {
  display: grid;
  gap: 8px;
  margin: 0;
}

.search-field__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--muted);
  text-transform: uppercase;
}

.search-field__input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0.02em;
}

.search-field__input::placeholder {
  color: rgba(167, 180, 174, 0.7);
}

.search-field__input:focus {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
  border-color: var(--lime);
}

.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  max-height: 300px;
  overflow: auto;
}

.search-results__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 12px;
  background: var(--panel-2);
  border-left: 2px solid var(--line);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.search-results__link:hover,
.search-results__link:focus-visible {
  border-left-color: var(--lime);
  color: var(--lime);
  background: rgba(198, 255, 61, 0.06);
}

.search-results__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  white-space: nowrap;
}

.search-empty {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--muted);
}

/* ===== 页首海报层 ===== */
.page-hero {
  position: relative;
  padding-block: clamp(44px, 7vw, 100px) clamp(26px, 4vw, 52px);
}

.page-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-hero__eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--lime);
}

.page-hero__title {
  margin: 0 0 20px;
  font-size: clamp(42px, 6vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.page-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.7;
  color: var(--muted);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding-block: 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb__list > li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__list > li:not(:first-child)::before {
  content: "›";
  color: var(--line);
}

.breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible {
  color: var(--lime);
}

.breadcrumb__current {
  color: var(--paper);
}

/* ===== 分区标题 ===== */
.section {
  padding-block: var(--block);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 26px;
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line);
}

.section__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 40px);
  line-height: 1.06;
  letter-spacing: -0.025em;
}

.section__note {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ===== 网格 ===== */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

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

.grid--cards {
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
}

/* ===== 联赛层级树 ===== */
.tree {
  list-style: none;
  margin: 0;
  padding: 0 0 0 0;
  border-left: 1px solid var(--line);
}

.tree__group-title {
  margin: 20px 0 8px;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.tree__group-title:first-child {
  margin-top: 0;
}

.tree__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-left: -1px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.tree__link:hover {
  color: var(--paper);
  background: var(--panel-2);
  border-left-color: var(--muted);
}

.tree__link[aria-current="true"] {
  color: var(--lime);
  background: var(--panel-2);
  border-left-color: var(--lime);
}

.tree__count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ===== 轮次时间轴 ===== */
.timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line);
}

.timeline__item {
  position: relative;
  padding: 0 0 26px 18px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--line);
}

.timeline__item[data-state="current"]::before {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 61, 0.12);
}

.timeline__round {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.timeline__title {
  margin: 0 0 4px;
  font-size: clamp(16px, 1.8vw, 20px);
  line-height: 1.35;
}

/* ===== 卡片 ===== */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  transition: border-color 0.22s ease, background-color 0.22s ease, transform 0.22s ease;
}

.card:hover {
  border-left-color: var(--lime);
  background: var(--panel-2);
}

.card__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lime);
}

.card__title {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.32;
}

.card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 22px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.btn--primary {
  background: var(--lime);
  border-color: var(--lime);
  color: #071C16;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: transparent;
  color: var(--lime);
}

.btn--ghost {
  border-color: var(--line);
  color: var(--paper);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.btn--quiet {
  min-height: 0;
  padding: 0 0 3px;
  border-bottom: 1px solid var(--lime);
  color: var(--lime);
  letter-spacing: 0.08em;
}

.btn--quiet:hover,
.btn--quiet:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.tag--lime { border-color: var(--lime); color: var(--lime); }
.tag--amber { border-color: var(--amber); color: var(--amber); }
.tag--league-blue { border-left: 3px solid var(--tag-blue); color: #D3E2E9; }
.tag--league-purple { border-left: 3px solid var(--tag-purple); color: #DCD5E6; }
.tag--league-clay { border-left: 3px solid var(--tag-clay); color: #EEDCD7; }

/* ===== 数据块 ===== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.stat {
  padding: clamp(14px, 2vw, 22px);
  background: var(--panel);
}

.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== 战术板面板 ===== */
.board {
  position: relative;
  padding: clamp(18px, 2.6vw, 30px);
  background-color: var(--panel-2);
  border: 1px solid var(--line);
  overflow: hidden;
}

.board::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(46, 74, 64, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 74, 64, 0.55) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
  pointer-events: none;
}

.board > * {
  position: relative;
}

/* ===== 图片 / 示意图容器 ===== */
.figure {
  display: grid;
  gap: 10px;
  margin: 0;
}

.figure__frame {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
  background-color: var(--panel-2);
  background-image:
    linear-gradient(to right, rgba(46, 74, 64, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 74, 64, 0.6) 1px, transparent 1px);
  background-size: 40px 40px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.figure__frame > img,
.figure__frame > svg,
.figure__frame > picture {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__caption {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.figure--wide .figure__frame { aspect-ratio: 21 / 9; }
.figure--tall .figure__frame { aspect-ratio: 4 / 5; }

/* ===== 主题筛选 ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 14px 0 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.filter-bar__group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  min-height: 38px;
  padding: 0 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.filter-button:hover {
  color: var(--paper);
  border-color: var(--muted);
}

.filter-button[aria-pressed="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: #071C16;
}

.filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.filter-empty {
  margin: 0;
  padding: 16px 0;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--muted);
}

[data-filter-item] {
  transition: opacity 0.2s ease;
}

[data-filter-item][hidden] {
  display: none !important;
}

/* ===== 索引列表 ===== */
.index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.index-list__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 8px 16px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.2s ease, padding-left 0.2s ease;
}

.index-list__row:hover {
  background: var(--panel-2);
  padding-left: 12px;
}

.index-list__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.index-list__title {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
}

.index-list__link {
  color: inherit;
  text-decoration: none;
}

.index-list__link:hover,
.index-list__link:focus-visible {
  color: var(--lime);
}

.index-list__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  white-space: nowrap;
}

/* ===== 长文排版 ===== */
.prose {
  max-width: 70ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: #E1E9E4;
}

.prose h2 {
  margin: 2em 0 0.6em;
  font-size: clamp(22px, 2.4vw, 30px);
}

.prose h3 {
  margin: 1.6em 0 0.5em;
  font-size: 19px;
}

.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.2em; }
.prose li { margin-bottom: 0.4em; }

.prose a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

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

.prose blockquote {
  margin: 1.6em 0;
  padding: 14px 18px;
  background: var(--panel);
  border-left: 2px solid var(--amber);
  font-family: var(--font-serif);
  color: var(--muted);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--panel-2);
  padding: 2px 6px;
  border: 1px solid var(--line);
}

/* ===== 渐进显现 ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ===== 页脚 ===== */
.site-footer {
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--panel);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-shell {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding-block: clamp(38px, 5vw, 64px);
}

.footer-lead {
  display: grid;
  gap: 10px;
  max-width: 660px;
}

.footer-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-motto {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.footer-note {
  margin: 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: clamp(22px, 3vw, 42px);
  padding-top: clamp(22px, 3vw, 36px);
  border-top: 1px solid var(--line);
}

.footer-col {
  min-width: 0;
}

.footer-col--contact {
  display: grid;
  gap: 14px;
  align-content: start;
}

.footer-col__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--paper);
}

.footer-links {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links__link {
  display: inline-block;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-links__link:hover,
.footer-links__link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.contact-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
}

.contact-list__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-list__value {
  display: block;
  color: var(--paper);
  word-break: break-word;
}

.footer-base {
  background: var(--ink);
  border-top: 1px solid var(--line);
}

.footer-base__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 26px;
  padding-block: 18px;
}

.footer-legal {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
}

.footer-legal__links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1180px) {
  .tool-button__label { display: none; }
  .tool-button { padding: 0 12px; }
}

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin: 0;
    display: none;
    padding: 6px var(--gutter) 18px;
    background: var(--panel);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 40px 70px -46px rgba(0, 0, 0, 0.95);
    max-height: calc(100vh - 60px);
    overflow: auto;
  }

  .primary-nav[data-open="true"] {
    display: block;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__link {
    display: block;
    padding: 14px 4px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
  }

  .primary-nav__link::after {
    display: none;
  }

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

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

@media (max-width: 720px) {
  .status-rail__list { display: none; }
  .status-rail__inner { min-height: 32px; }
  .status-rail__note { font-size: 12px; letter-spacing: 0.01em; }
  .header-shell { min-height: 64px; }
  .brand__line { display: none; }
  .brand__mark { width: 34px; height: 34px; font-size: 17px; }
  .brand__name { font-size: 15px; }
  .header-cta { display: none; }
  .index-list__row { grid-template-columns: auto minmax(0, 1fr); }
  .index-list__meta { grid-column: 2; }
  .footer-base__inner { justify-content: flex-start; }
}

@media (min-width: 900px) {
  .grid--split {
    grid-template-columns: minmax(220px, 290px) minmax(0, 1fr);
  }
}

@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;
  }

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

  .header-progress { transition: none; }
}