/* ============================================================
   今年会体育 · 共享样式 /assets/site.css
   夜间球场数据仪表盘 · 墨绿底 + 荧光青 + 橙红
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

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

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

table { border-collapse: collapse; border-spacing: 0; }

/* ---------- 变量 ---------- */
:root {
  --ink-900: #061C16;
  --ink-800: #0C2A22;
  --ink-700: #143B32;
  --glass-teal: rgba(155, 255, 232, 0.12);
  --cyan-500: #2BF5C8;
  --cyan-200: #8CFFE4;
  --ember-500: #FF5A2B;
  --ember-300: #FF9A6B;
  --chalk-50: #EAF4EF;
  --mist-400: #7E9A93;

  --text-soft: rgba(234, 244, 239, 0.78);
  --text-dim: rgba(234, 244, 239, 0.56);

  --font-display: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
                  "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo,
               Consolas, "Liberation Mono", monospace;

  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;

  --ease: cubic-bezier(0.22, 0.75, 0.28, 1);
  --hdr-border: 1px solid var(--ink-700);
}

/* ---------- 基础中文排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(880px 520px at 82% -10%, rgba(43, 245, 200, 0.10), transparent 60%),
    radial-gradient(720px 460px at 4% 6%, rgba(255, 90, 43, 0.06), transparent 58%),
    linear-gradient(rgba(43, 245, 200, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 245, 200, 0.028) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  background-repeat: no-repeat, no-repeat, repeat, repeat;
  color: var(--text-soft);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  word-break: break-word;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--chalk-50);
}

h1 { font-size: clamp(30px, 5vw, 58px); }
h2 { font-size: clamp(24px, 3.6vw, 40px); }
h3 { font-size: clamp(18px, 2.2vw, 24px); letter-spacing: -0.015em; }

strong { font-weight: 800; color: var(--chalk-50); }

::selection {
  background: var(--cyan-500);
  color: var(--ink-900);
}

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

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.skip-link {
  position: absolute;
  top: -72px;
  left: var(--gutter);
  z-index: 200;
  padding: 10px 20px;
  background: var(--cyan-500);
  color: #04231C;
  font-weight: 800;
  font-size: 14px;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: top 0.18s var(--ease);
}

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

/* ============================================================
   头部：居中刊头导航
   ============================================================ */
.site-header {
  --brand-size: clamp(23px, 3.4vw, 40px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 28, 22, 0.84);
  -webkit-backdrop-filter: blur(14px) saturate(1.25);
  backdrop-filter: blur(14px) saturate(1.25);
  border-bottom: var(--hdr-border);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.site-header.is-tight {
  --brand-size: clamp(17px, 1.9vw, 23px);
  background: rgba(6, 28, 22, 0.96);
  box-shadow: 0 16px 36px -24px rgba(0, 0, 0, 0.95);
}

/* 顶部快捷查询条 */
.mast-util {
  max-height: 64px;
  overflow: hidden;
  border-bottom: 1px solid rgba(20, 59, 50, 0.9);
  transition: max-height 0.3s var(--ease), opacity 0.2s var(--ease);
}

.site-header.is-tight .mast-util {
  max-height: 0;
  opacity: 0;
  border-bottom-color: transparent;
}

.mast-util__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 18px;
  min-height: 40px;
}

.mast-util__meta {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist-400);
  text-transform: uppercase;
}

.mast-util__nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid rgba(43, 245, 200, 0.26);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--cyan-200);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease),
              color 0.2s var(--ease);
}

.chip-link:hover {
  background: var(--glass-teal);
  border-color: var(--cyan-500);
  color: var(--cyan-500);
}

/* 刊头本体 */
.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(10px, 2.5vw, 26px);
  padding-block: clamp(13px, 2.2vw, 24px);
  transition: padding 0.3s var(--ease);
}

.site-header.is-tight .masthead { padding-block: 8px; }

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--brand-size);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--chalk-50);
  transition: font-size 0.28s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
}

.brand:hover .brand__name { color: var(--cyan-200); }

.brand__sub {
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--mist-400);
  transition: opacity 0.2s var(--ease);
}

.site-header.is-tight .brand__sub { opacity: 0; }

.mast-cta {
  justify-self: end;
  align-self: center;
}

/* 移动导航按钮 */
.nav-toggle {
  justify-self: start;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-sm);
  background: rgba(12, 42, 34, 0.7);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-toggle:hover { border-color: var(--cyan-500); }

.nav-toggle__bar {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--chalk-50);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

.nav-toggle[aria-expanded="true"] { border-color: var(--cyan-500); }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

/* 栏目行 */
.nav-bar { border-top: 1px solid var(--ink-700); }

.site-nav { display: block; }

.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(6px, 2.2vw, 30px);
  padding-block: 4px;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: rgba(234, 244, 239, 0.72);
  transition: color 0.2s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan-500);
  transition: left 0.26s var(--ease), right 0.26s var(--ease);
}

.site-nav__link:hover { color: var(--chalk-50); }

.site-nav__link:hover::after { left: 0; right: 0; }

.site-nav__link[aria-current="page"] { color: var(--cyan-500); }

.site-nav__link[aria-current="page"]::after {
  left: 0;
  right: 0;
  background: var(--ember-500);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background:
    radial-gradient(760px 380px at 88% 0%, rgba(43, 245, 200, 0.08), transparent 62%),
    var(--ink-900);
  border-top: 1px solid var(--ink-700);
  color: var(--text-dim);
  font-size: 14px;
}

.footer-rule {
  height: 20px;
  border-bottom: 1px solid var(--ink-700);
  background-image: repeating-linear-gradient(
    90deg,
    rgba(43, 245, 200, 0.26) 0 1px,
    transparent 1px 44px
  );
  opacity: 0.85;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
  padding-block: clamp(36px, 5vw, 64px) clamp(24px, 3vw, 40px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  max-width: 42ch;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.03em;
  color: var(--chalk-50);
  line-height: 1.1;
}

.footer-brand__note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-400);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: clamp(18px, 3vw, 30px);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-500);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col__link {
  display: inline-block;
  font-size: 14.5px;
  color: rgba(234, 244, 239, 0.72);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer-col__link:hover {
  color: var(--cyan-200);
  border-bottom-color: rgba(43, 245, 200, 0.5);
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(20px, 4vw, 46px);
  padding-block: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--ink-700);
  border-bottom: 1px solid var(--ink-700);
}

.footer-contact__item {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13.5px;
}

.footer-contact__k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--mist-400);
  text-transform: uppercase;
  white-space: nowrap;
}

.footer-contact__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: rgba(234, 244, 239, 0.86);
}

.footer-legal {
  background: rgba(12, 42, 34, 0.55);
}

.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-block: 16px;
}

.footer-legal__copy {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.2s var(--ease),
              border-color 0.2s var(--ease), color 0.2s var(--ease),
              box-shadow 0.2s var(--ease);
}

.btn--primary {
  background: var(--cyan-500);
  color: #04231C;
  box-shadow: 0 10px 26px -16px rgba(43, 245, 200, 0.9);
}

.btn--primary:hover {
  background: var(--cyan-200);
  transform: translateY(-2px);
}

.btn--ghost {
  border-color: rgba(43, 245, 200, 0.42);
  color: var(--cyan-200);
}

.btn--ghost:hover {
  background: var(--glass-teal);
  border-color: var(--cyan-500);
  color: var(--cyan-500);
  transform: translateY(-2px);
}

.btn--ember {
  background: var(--ember-500);
  color: #2A0A00;
}

.btn--ember:hover {
  background: var(--ember-300);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 13.5px;
}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb {
  padding-block: 18px 4px;
  font-size: 12.5px;
  color: var(--mist-400);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb__item:not(:first-child)::before {
  content: "/";
  margin: 0 9px;
  color: rgba(126, 154, 147, 0.55);
}

.breadcrumb__link {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  transition: color 0.2s var(--ease);
}

.breadcrumb__link:hover { color: var(--cyan-500); }

.breadcrumb__current {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--chalk-50);
}

/* ============================================================
   正文容器
   ============================================================ */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
}

.prose > * + * { margin-top: 1em; }

.prose h2 {
  margin-top: 1.9em;
  font-size: clamp(22px, 2.6vw, 30px);
}

.prose h3 {
  margin-top: 1.6em;
  font-size: clamp(17px, 1.9vw, 21px);
}

.prose ul,
.prose ol {
  padding-left: 1.2em;
  list-style: none;
}

.prose ul li,
.prose ol li {
  position: relative;
  padding-left: 4px;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: -0.9em;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--cyan-500);
}

.prose ol { counter-reset: prose-ol; }

.prose ol li::before {
  counter-increment: prose-ol;
  content: counter(prose-ol);
  position: absolute;
  left: -1.4em;
  top: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-200);
}

.prose a {
  color: var(--cyan-500);
  border-bottom: 1px solid rgba(43, 245, 200, 0.4);
}

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

.prose blockquote {
  padding: 14px 18px;
  border-left: 3px solid var(--ember-500);
  background: rgba(255, 90, 43, 0.06);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: rgba(234, 244, 239, 0.86);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 2px 6px;
  border-radius: var(--r-sm);
  background: rgba(43, 245, 200, 0.08);
  color: var(--cyan-200);
}

/* ============================================================
   章节 / 网格 / 分栏
   ============================================================ */
.section {
  position: relative;
  padding-block: clamp(38px, 6vw, 86px);
}

.section--narrow {
  max-width: 860px;
  margin-inline: auto;
}

.section__eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan-500);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--chalk-50);
}

.section__note {
  max-width: 58ch;
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--mist-400);
}

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 42px);
  align-items: start;
}

/* ============================================================
   卡片 / 标签 / 指标 / 表格 / 折叠 / 媒体容器
   ============================================================ */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease),
              box-shadow 0.25s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(43, 245, 200, 0.34);
  box-shadow: 0 22px 44px -28px rgba(0, 0, 0, 0.95);
}

.card--glass {
  background: var(--glass-teal);
  border-color: rgba(155, 255, 232, 0.22);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  background: rgba(20, 59, 50, 0.5);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.tag--cyan {
  color: var(--cyan-200);
  border-color: rgba(43, 245, 200, 0.35);
  background: rgba(43, 245, 200, 0.08);
}

.tag--ember {
  color: var(--ember-300);
  border-color: rgba(255, 90, 43, 0.35);
  background: rgba(255, 90, 43, 0.08);
}

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

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--chalk-50);
}

.stat__value--accent { color: var(--cyan-500); }
.stat__value--up { color: var(--ember-500); }
.stat__value--down { color: var(--ember-300); }

.stat__label {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--mist-400);
}

.data-table__wrap {
  overflow-x: auto;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-800);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 560px;
  font-size: 14.5px;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(20, 59, 50, 0.85);
  white-space: nowrap;
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist-400);
  background: rgba(6, 28, 22, 0.6);
}

.data-table tbody tr:hover { background: rgba(43, 245, 200, 0.05); }

.data-table td.num,
.data-table th.num { text-align: right; }

.data-table tbody tr:last-child td { border-bottom: 0; }

.fold {
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-800);
  overflow: hidden;
}

.fold + .fold { margin-top: 10px; }

.fold__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--chalk-50);
  transition: color 0.2s var(--ease);
}

.fold__head:hover { color: var(--cyan-200); }

.fold__head::after {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 1.5px solid var(--cyan-500);
  border-bottom: 1.5px solid var(--cyan-500);
  transform: rotate(45deg) translateY(-3px);
  transition: transform 0.24s var(--ease);
}

.fold[data-open="true"] .fold__head::after {
  transform: rotate(225deg) translateY(-2px);
}

.fold__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s var(--ease);
}

.fold[data-open="true"] .fold__panel { max-height: 720px; }

.fold__inner {
  padding: 0 18px 18px;
  font-size: 14.5px;
  color: var(--text-soft);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame > img,
.media-frame > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}

.media-frame__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--chalk-50);
  background: linear-gradient(to top, rgba(6, 28, 22, 0.92), rgba(6, 28, 22, 0));
}

/* ============================================================
   滚动显现
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   焦点与无障碍
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============================================================
   响应式：平板与桌面
   ============================================================ */
@media (min-width: 900px) {
  .split--aside-narrow { grid-template-columns: 5fr 7fr; }
  .split--aside-wide { grid-template-columns: 7fr 5fr; }

  .footer-top {
    grid-template-columns: minmax(260px, 1fr) 1.4fr;
    align-items: start;
  }
}

/* ============================================================
   响应式：移动端导航与刊头
   ============================================================ */
@media (max-width: 880px) {
  html { scroll-padding-top: 96px; }

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

  .masthead {
    grid-template-columns: auto 1fr auto;
    gap: 10px;
  }

  .nav-bar { border-top: 0; }

  .site-nav {
    display: none;
    border-top: 1px solid var(--ink-700);
    background: rgba(9, 33, 26, 0.98);
  }

  .site-nav[data-open="true"] {
    display: block;
    animation: navIn 0.22s var(--ease);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 6px 14px;
  }

  .site-nav__link {
    display: block;
    padding: 14px 4px;
    border-bottom: 1px solid rgba(20, 59, 50, 0.75);
    font-size: 16px;
  }

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

  .site-nav__link[aria-current="page"] {
    padding-left: 12px;
    border-left: 3px solid var(--cyan-500);
    background: rgba(43, 245, 200, 0.06);
  }

  .site-nav__list li:last-child .site-nav__link { border-bottom: 0; }
}

@keyframes navIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 560px) {
  .brand__sub { display: none; }
  .mast-util__meta { font-size: 11px; letter-spacing: 0.08em; }
  .footer-contact__item { flex-direction: column; gap: 2px; }
}

/* ============================================================
   减少动态效果
   ============================================================ */
@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;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .btn:hover { transform: none; }
}