/* ==========================================================================
   风云体育 · CN官网  共享样式表  /assets/site.css
   语义：深夜战术分析室 —— 墨绿地面、荧光标注、粗边框硬阴影、画册式章节
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 128px;
}

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

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

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

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

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

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

hr { border: 0; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 主色区 */
  --ink: #0B1F1A;
  --carbon: #121417;
  /* 分区色 */
  --mid: #14332B;
  --indigo: #2A2340;
  --wine: #4A1220;
  /* 强调色 */
  --lime: #C6F24E;
  --orange: #FF7A2F;
  --red: #E5484D;
  /* 文字色 */
  --paper: #E8EDEA;
  --muted: #8A9A93;
  /* 边界与阴影 */
  --line: rgba(232, 237, 234, 0.13);
  --line-2: rgba(232, 237, 234, 0.26);
  --edge-dark: rgba(4, 11, 8, 0.85);
  --shadow-1: 6px 6px 0 rgba(0, 0, 0, 0.55);
  --shadow-2: 10px 12px 0 rgba(0, 0, 0, 0.62);
  /* 字体 */
  --font-head: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  /* 尺寸 */
  --wrap: 1320px;
  --gutter: clamp(18px, 3.4vw, 48px);
  --rail: 264px;
  --header-h: 104px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100%;
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(232, 237, 234, 0.028) 0 1px, transparent 1px 104px),
    radial-gradient(120% 55% at 50% -8%, rgba(20, 51, 43, 0.9), rgba(11, 31, 26, 0) 72%);
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(30px, 4.4vw, 44px); }
h2 { font-size: clamp(24px, 2.8vw, 34px); }
h3 { font-size: clamp(19px, 1.9vw, 26px); }
h4 { font-size: 20px; }

p { max-width: 72ch; }

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

::selection {
  background: var(--lime);
  color: #0A1A12;
}

/* ---------- 4. 工具类 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.mono,
.data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.visually-hidden {
  position: absolute;
  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;
}

.rule {
  height: 1px;
  background: var(--line);
  border: 0;
}

.rule--lime { background: linear-gradient(90deg, var(--lime), rgba(198, 242, 78, 0)); }

.lede {
  font-size: clamp(16px, 1.35vw, 18.5px);
  color: var(--paper);
  max-width: 62ch;
}

.dim { color: var(--muted); }

/* ---------- 5. 焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -80px;
  left: 12px;
  z-index: 400;
  display: inline-block;
  padding: 10px 18px;
  background: var(--orange);
  color: #1A0D03;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 2px solid var(--edge-dark);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.6);
  transition: top 0.18s ease;
}

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

/* ---------- 6. 页头 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  background: transparent;
  border-bottom: 2px solid transparent;
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.site-header[data-scrolled="true"] {
  background: var(--ink);
  border-bottom-color: var(--mid);
  box-shadow: 0 12px 0 rgba(0, 0, 0, 0.32);
}

.header-rail {
  display: flex;
  align-items: center;
  gap: 26px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 10px var(--gutter) 0;
  max-height: 44px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  transition: max-height 0.18s ease, opacity 0.18s ease, padding-top 0.18s ease;
}

.header-rail__key {
  color: var(--orange);
  margin-right: 8px;
  letter-spacing: 0.18em;
}

.site-header[data-scrolled="true"] .header-rail {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--gutter);
  transition: padding 0.18s ease;
}

.site-header[data-scrolled="true"] .header-inner {
  padding-top: 8px;
  padding-bottom: 8px;
}

/* 品牌 */
.brand {
  position: relative;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--lime);
  color: #0A1A12;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  border: 2px solid var(--edge-dark);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.6);
}

.brand__text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand__sep {
  color: var(--lime);
  margin: 0 6px;
}

.brand__cn {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
}

/* 导航 */
.primary-nav {
  margin-left: auto;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 12px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
  transition: color 0.18s ease;
}

.nav-link__no {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color 0.18s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease;
}

.nav-link:hover { color: var(--lime); }
.nav-link:hover .nav-link__no { color: var(--lime); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--lime); }
.nav-link[aria-current="page"] .nav-link__no { color: var(--orange); }
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--orange);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

/* 移动端切换按钮 */
.nav-toggle {
  position: relative;
  z-index: 3;
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 9px 13px;
  background: var(--carbon);
  border: 2px solid var(--line-2);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--lime);
  transition: top 0.18s ease, transform 0.18s ease;
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 5px; transform: rotate(-45deg); }

/* 阅读进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  background: var(--mid);
  border: 2px solid var(--line-2);
  color: var(--paper);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.55);
  transition: transform 0.16s ease, box-shadow 0.16s ease,
              background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.btn:hover {
  transform: translate(-2px, -3px);
  box-shadow: 7px 8px 0 rgba(0, 0, 0, 0.6);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.55);
}

.btn--accent {
  background: var(--orange);
  border-color: var(--edge-dark);
  color: #1A0D03;
}

.btn--accent:hover { background: #FF9052; }

.btn--lime {
  background: var(--lime);
  border-color: var(--edge-dark);
  color: #0F2208;
}

.btn--lime:hover { background: #D4FA6E; }

.btn--ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--paper);
}

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

.btn--sm {
  padding: 8px 14px;
  font-size: 13.5px;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.55);
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 8vw, 120px);
  background: var(--carbon);
  border-top: 3px solid var(--lime);
  color: var(--paper);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(36px, 5vw, 68px) var(--gutter) 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 2.2fr;
  gap: clamp(28px, 5vw, 84px);
  padding-bottom: clamp(28px, 3.6vw, 44px);
  border-bottom: 1px solid var(--line);
}

.footer-brand__lockup {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.01em;
  border-bottom: 2px solid transparent;
  transition: border-color 0.16s ease, color 0.16s ease;
}

.footer-brand__lockup:hover { border-bottom-color: var(--lime); }

.footer-brand__sep { color: var(--lime); margin: 0 7px; }

.footer-brand__line {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.footer-brand__domain {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mid);
  color: rgba(198, 242, 78, 0.42);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.footer-col__list {
  display: grid;
  gap: 11px;
  margin-top: 16px;
}

.footer-col__list a {
  font-size: 14.5px;
  color: var(--paper);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

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

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 30px;
  padding: clamp(20px, 2.6vw, 28px) 0;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--muted);
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-right: 8px;
}

.footer-contact__item { color: var(--paper); }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 9. 右下角订阅入口 ---------- */
.dock {
  position: fixed;
  right: clamp(14px, 2.4vw, 30px);
  bottom: clamp(14px, 2.4vw, 30px);
  z-index: 130;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.dock__btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 16px;
  background: var(--carbon);
  border: 2px solid var(--line-2);
  color: var(--paper);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.6);
  transition: transform 0.16s ease, box-shadow 0.16s ease,
              border-color 0.16s ease, color 0.16s ease;
}

.dock__btn:hover {
  transform: translateY(-3px);
  border-color: var(--lime);
  color: var(--lime);
}

.dock__dot {
  width: 8px;
  height: 8px;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 47, 0.22);
}

.dock__panel {
  width: min(300px, calc(100vw - 32px));
  padding: 18px;
  background: var(--mid);
  border: 2px solid var(--lime);
  box-shadow: var(--shadow-2);
}

.dock__panel[hidden] { display: none; }

.dock__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.dock__list {
  display: grid;
  gap: 9px;
  margin: 14px 0 18px;
  font-size: 13.5px;
  color: var(--paper);
}

.dock__num {
  display: inline-block;
  min-width: 44px;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

/* ---------- 10. 通用组件 ---------- */
#main-content {
  display: block;
  padding-top: var(--header-h);
}

#main-content.main--flush { padding-top: 0; }

.section {
  padding-block: clamp(42px, 5.6vw, 82px);
  border-top: 1px solid var(--line);
}

.section--first { border-top: 0; padding-top: clamp(28px, 3.4vw, 52px); }

.section-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 1.8vw, 22px);
  margin-bottom: clamp(20px, 3vw, 38px);
}

.section-index {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.section-sub {
  margin-top: 9px;
  max-width: 64ch;
  font-size: 14.5px;
  color: var(--muted);
}

.layout-split {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 56px);
  align-items: start;
}

.rail {
  position: sticky;
  top: 108px;
  display: grid;
  gap: 22px;
}

/* 研究板 */
.board {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--carbon);
  border: 2px solid var(--line-2);
  box-shadow: var(--shadow-1);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.board:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: var(--lime);
}

.board--mid { background: var(--mid); }
.board--indigo { background: var(--indigo); border-color: rgba(198, 242, 78, 0.28); }
.board--wine { background: var(--wine); border-color: rgba(229, 72, 77, 0.42); }

.board__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.board__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.board__title {
  margin-top: 8px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
}

.board__body {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--paper);
}

.board__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* 旁注 */
.note {
  padding: 4px 0 4px 16px;
  border-left: 3px solid var(--lime);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.72;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* 术语表 */
.terms { display: grid; gap: 18px; }

.terms dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.terms dd {
  margin-top: 5px;
  font-size: 14px;
  color: var(--muted);
}

/* 数字 */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid var(--line-2);
}

.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.stat__unit {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--mid);
  border: 1px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--paper);
  transition: border-color 0.16s ease, color 0.16s ease, background-color 0.16s ease;
}

.tag--lime {
  background: rgba(198, 242, 78, 0.08);
  border-color: var(--lime);
  color: var(--lime);
}

.tag--injury {
  background: rgba(229, 72, 77, 0.12);
  border-color: var(--red);
  color: var(--red);
}

.tag--live {
  background: rgba(255, 122, 47, 0.1);
  border-color: var(--orange);
  color: var(--orange);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 表格 */
.data-table {
  width: 100%;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.data-table tbody tr { transition: background-color 0.16s ease; }
.data-table tbody tr:hover { background: rgba(198, 242, 78, 0.05); }

.data-table td.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--lime);
  white-space: nowrap;
}

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: 30px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.crumbs a { transition: color 0.16s ease; }
.crumbs a:hover { color: var(--lime); }
.crumbs__sep { color: rgba(232, 237, 234, 0.3); }
.crumbs [aria-current="page"] { color: var(--lime); }

/* 图片容器 */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--mid);
  border: 2px solid var(--line-2);
  box-shadow: var(--shadow-1);
}

.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.06) brightness(0.9);
}

.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }

.media-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  background: var(--lime);
  color: #0A1A12;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

/* 延伸入口 */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--lime);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.link-more::after {
  content: "→";
  transition: transform 0.16s ease;
}

.link-more:hover { border-bottom-color: var(--lime); }
.link-more:hover::after { transform: translateX(4px); }

/* ---------- 11. 显现 ---------- */
[data-reveal] {
  transition: opacity 0.42s ease, transform 0.42s ease;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.js [data-reveal="on"] {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1080px) {
  .layout-split { grid-template-columns: 1fr; }
  .rail { position: static; }
}

@media (max-width: 900px) {
  :root { --rail: auto; }

  .header-rail { display: none; }

  .nav-toggle { display: inline-flex; }

  .header-actions { display: none; }

  .primary-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    margin: 0;
    padding: 110px var(--gutter) 48px;
    background: var(--ink);
    border-top: 3px solid var(--lime);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  }

  .primary-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

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

  .nav-link {
    display: flex;
    justify-content: space-between;
    padding: 17px 2px;
    font-size: 20px;
    border-bottom: 1px solid var(--line);
  }

  .nav-link::after { display: none; }
  .nav-link__no { font-size: 12px; }

  #main-content { padding-top: 88px; }

  .footer-top { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .dock__btn { padding: 10px 13px; font-size: 13px; }
}

@media (max-width: 560px) {
  .footer-cols { grid-template-columns: 1fr; gap: 24px; }
  .footer-legal { flex-direction: column; }
  .section-head { flex-direction: column; gap: 8px; }
  .section-index { padding-top: 0; }
  .dock { right: 12px; bottom: 12px; }
}

/* ---------- 13. 降低动态 ---------- */
@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;
  }

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

  .board:hover,
  .btn:hover,
  .dock__btn:hover {
    transform: none;
  }

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