/* =========================================================
   博喜体育站 · 共享样式 /assets/site.css
   墨绿战术室底 + 奶油纸面板 + 电光青/荧光黄/暖橙状态色
   ========================================================= */

:root {
  --ink: #0B2B24;
  --ink-2: #0F3A30;
  --abyss: #071F1A;
  --cyan: #35E0D0;
  --lime: #E8FF59;
  --orange: #FF7A33;
  --paper: #F4EFE2;
  --paper-2: #DCD6C6;
  --paper-3: #E9E2D0;
  --brown: #1A1512;
  --muted: #7FA79F;
  --cool: #EAF6F3;
  --line: rgba(127, 167, 159, 0.26);
  --line-strong: rgba(53, 224, 208, 0.42);
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --notch: 12px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --shadow: 0 18px 42px rgba(3, 16, 13, 0.45);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  color: var(--cool);
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(0deg, rgba(53, 224, 208, 0.05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(53, 224, 208, 0.04) 0 1px, transparent 1px 96px);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--cool);
}

h1 { font-size: clamp(40px, 6.4vw, 96px); }
h2 { font-size: clamp(28px, 3.6vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 24px); }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--cyan); text-decoration: none; }
a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

::selection { background: var(--lime); color: var(--brown); }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

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

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

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

.bs-skip {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 95;
  transform: translate(-50%, -160%);
  padding: 10px 20px;
  background: var(--lime);
  color: var(--brown);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.bs-skip:focus { transform: translate(-50%, 10px); text-decoration: none; }

/* ---------- 顶部阅读进度 ---------- */
.bs-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 90;
  pointer-events: none;
  background: rgba(53, 224, 208, 0.12);
}

.bs-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(53, 224, 208, 0.65);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- 刊头 ---------- */
.site-header {
  position: relative;
  z-index: 40;
  background: linear-gradient(180deg, #0F3A30 0%, #0B2B24 94%);
  border-bottom: 1px solid var(--line);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0 11%, rgba(53, 224, 208, 0) 11% 100%);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "left center right";
  align-items: center;
  gap: 24px;
  padding-top: 26px;
  padding-bottom: 20px;
}

.masthead__center {
  grid-area: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.masthead__side {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
}

.masthead__side--left {
  grid-area: left;
  align-items: flex-start;
  text-align: left;
}

.masthead__side--right {
  grid-area: right;
  align-items: flex-end;
  text-align: right;
}

.masthead__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--paper);
  text-decoration: none;
}

.masthead__brand:hover { text-decoration: none; }
.masthead__brand:hover .masthead__wordmark { color: var(--lime); }

.masthead__wordmark {
  font-size: clamp(32px, 4.2vw, 54px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--paper);
  transition: color 0.2s ease;
}

.masthead__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.44em;
  text-indent: 0.44em;
  color: var(--cyan);
}

.masthead__tagline {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.32em;
  text-indent: 0.32em;
  color: var(--muted);
}

.bs-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  white-space: nowrap;
}

.bs-kicker--dim { color: rgba(127, 167, 159, 0.62); }

.bs-status {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  white-space: nowrap;
}

.bs-status__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.bs-status__value {
  display: inline-block;
  min-width: 8.4ch;
  text-align: right;
  font-size: 15px;
  font-weight: 700;
  color: var(--orange);
}

.bs-status--mark .bs-status__value {
  min-width: 5ch;
  color: var(--cyan);
  box-shadow: inset 0 -7px 0 rgba(232, 255, 89, 0.28);
}

/* ---------- 栏目导航 ---------- */
.site-nav {
  background: rgba(7, 31, 26, 0.62);
  border-top: 1px solid var(--line);
}

.site-nav__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding-top: 9px;
  padding-bottom: 9px;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item { margin: 0; }

.site-nav__link {
  display: inline-block;
  padding: 9px 17px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--cool);
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav__link:hover {
  color: var(--cyan);
  background: rgba(53, 224, 208, 0.08);
  text-decoration: none;
}

.site-nav__link:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.site-nav__link[aria-current="page"] {
  background: var(--cyan);
  color: #06231E;
  font-weight: 700;
  clip-path: polygon(9px 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
}

.site-nav__link[aria-current="page"]:hover {
  background: var(--cyan);
  color: #06231E;
  text-decoration: none;
}

.site-nav__link[aria-current="page"]:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--lime);
}

.site-nav__note {
  position: absolute;
  right: var(--gutter);
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 60;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  background: rgba(7, 31, 26, 0.92);
  color: var(--cool);
  cursor: pointer;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background 0.25s ease;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s ease, top 0.25s ease;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 72px;
  padding-top: 56px;
  padding-bottom: 28px;
  background: linear-gradient(180deg, #0B2B24 0%, #071F1A 100%);
  border-top: 1px solid var(--line-strong);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 132px;
  height: 4px;
  background: var(--orange);
}

.footer__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 22px;
  padding-bottom: 22px;
  border-bottom: 1px dashed rgba(127, 167, 159, 0.4);
}

.footer__brand {
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.footer__brand:hover { color: var(--lime); text-decoration: none; }

.footer__tagline {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 30px 32px;
  padding: 32px 0 8px;
}

.footer__col { min-width: 0; }

.footer__title {
  position: relative;
  margin-bottom: 14px;
  padding-left: 15px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.26em;
  color: var(--cyan);
}

.footer__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 2px;
  background: var(--orange);
  transform: translateY(-50%);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer__list li { font-size: 15px; color: var(--cool); }

.footer__link {
  color: var(--cool);
  font-size: 15px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  text-decoration: none;
}

.footer__list--plain li { color: var(--muted); font-size: 14px; }

.footer__text {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  word-break: break-word;
}

.footer__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px dashed rgba(127, 167, 159, 0.4);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer__legal .footer__link { font-size: 13px; letter-spacing: 0.06em; }

.footer__bar-item {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 按钮 ---------- */
.bs-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid transparent;
  background: var(--cyan);
  color: #06231E;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.bs-btn:hover { background: var(--lime); color: var(--brown); text-decoration: none; }

.bs-btn--ghost {
  background: transparent;
  color: var(--cyan);
  border-color: var(--line-strong);
  clip-path: none;
}

.bs-btn--ghost:hover {
  background: rgba(53, 224, 208, 0.1);
  color: var(--cyan);
  border-color: var(--cyan);
}

.bs-btn--accent {
  background: var(--orange);
  color: #17110D;
  clip-path: none;
}

.bs-btn--accent:hover { background: var(--lime); color: var(--brown); }

/* ---------- 面包屑 ---------- */
.bs-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

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

.bs-crumb li::after {
  content: "/";
  color: rgba(127, 167, 159, 0.55);
}

.bs-crumb li:last-child::after { content: none; }
.bs-crumb a { color: var(--cyan); }
.bs-crumb [aria-current="page"] { color: var(--cool); }

/* ---------- 正文容器 ---------- */
.bs-prose { max-width: 72ch; }
.bs-prose h2,
.bs-prose h3 { margin: 1.5em 0 0.6em; }
.bs-prose ul,
.bs-prose ol { padding-left: 1.25em; margin: 0 0 1.2em; }
.bs-prose li { margin-bottom: 0.45em; }
.bs-prose blockquote {
  margin: 1.4em 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--cyan);
  color: var(--cool);
}
.bs-prose blockquote p:last-child { margin-bottom: 0; }

.bs-panel--paper .bs-prose,
.bs-panel--paper .bs-prose h2,
.bs-panel--paper .bs-prose h3 { color: var(--brown); }

.bs-lede {
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.72;
  color: var(--cool);
}

.bs-note {
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 网格 ---------- */
.bs-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.bs-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.bs-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bs-grid--7-3 {
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  gap: 40px;
}

/* ---------- 面板 ---------- */
.bs-panel {
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: 22px;
}

.bs-panel--notch {
  border: 0;
  padding: 26px;
  clip-path: polygon(
    var(--notch) 0,
    100% 0,
    100% calc(100% - var(--notch)),
    calc(100% - var(--notch)) 100%,
    0 100%,
    0 var(--notch)
  );
}

.bs-panel--accent {
  background: linear-gradient(140deg, rgba(53, 224, 208, 0.16), rgba(15, 58, 48, 0.94));
  border-color: var(--line-strong);
}

.bs-panel--paper {
  background: var(--paper);
  border-color: var(--paper-2);
  color: var(--brown);
}

.bs-panel--paper h2,
.bs-panel--paper h3 { color: var(--brown); }
.bs-panel--paper .bs-note { color: #6B6156; }

/* ---------- 章节 ---------- */
.section {
  position: relative;
  padding: 68px 0;
}

.section--tight { padding: 42px 0; }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: 26px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.section__title { font-size: clamp(24px, 3vw, 38px); }

.section-marker {
  position: absolute;
  left: -6px;
  top: 68px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.section-marker::after {
  content: "";
  width: 1px;
  height: 56px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 224, 208, 0));
}

.section-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--muted);
  transition: color 0.3s ease;
}

.section-label.is-active { color: var(--cyan); }

/* ---------- 文本标记 ---------- */
.bs-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.bs-eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--orange);
}

.bs-mark {
  background: var(--lime);
  color: var(--brown);
  padding: 0 0.2em;
  font-weight: 700;
}

.bs-underline {
  border-bottom: 2px solid var(--cyan);
  padding-bottom: 2px;
}

/* ---------- 表格 ---------- */
.bs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.bs-table caption {
  padding-bottom: 10px;
  text-align: left;
  font-size: 13px;
  color: var(--muted);
}

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

.bs-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--ink-2);
  color: var(--cool);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.bs-table tbody tr:nth-child(even) { background: rgba(15, 58, 48, 0.55); }
.bs-table tbody tr:hover { background: rgba(53, 224, 208, 0.08); }
.bs-table tbody tr:hover td:first-child { box-shadow: inset 3px 0 0 var(--lime); }
.bs-table .num { color: var(--cyan); }

.bs-table--paper {
  background: var(--paper);
  color: var(--brown);
}

.bs-table--paper th,
.bs-table--paper td { border-color: var(--paper-2); }
.bs-table--paper thead th { background: var(--paper-3); color: var(--brown); }
.bs-table--paper .num { color: #0B6157; }

/* ---------- 筛选 chips ---------- */
.bs-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.bs-chip {
  appearance: none;
  padding: 7px 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--cool);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.bs-chip:hover { border-color: var(--cyan); color: var(--cyan); }

.bs-chip[aria-pressed="true"] {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--lime);
}

/* ---------- 图片容器 ---------- */
.bs-figure { margin: 0; }

.bs-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.bs-media {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
}

.bs-media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06) brightness(0.9);
}

.bs-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 43, 36, 0.2), rgba(11, 43, 36, 0.56)),
    repeating-linear-gradient(45deg, rgba(234, 246, 243, 0.035) 0 1px, transparent 1px 3px);
}

.bs-media--21x9 { aspect-ratio: 21 / 9; }
.bs-media--16x9 { aspect-ratio: 16 / 9; }
.bs-media--4x3 { aspect-ratio: 4 / 3; }
.bs-media--1x1 { aspect-ratio: 1 / 1; }
.bs-media--3x4 { aspect-ratio: 3 / 4; }

.bs-media__label {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  padding: 6px 12px;
  background: rgba(7, 31, 26, 0.86);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
}

/* ---------- 装饰 ---------- */
.bs-slash {
  display: block;
  width: 64px;
  height: 6px;
  background: var(--orange);
  transform: skewX(-24deg);
}

.bs-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--lime);
}

.bs-dot--live { background: var(--orange); }

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

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

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .section-marker { display: none; }
  .site-nav__note { display: none; }
}

@media (max-width: 1024px) {
  .bs-grid--7-3 { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .bs-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  body { font-size: 16px; }

  .masthead {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "center";
    gap: 0;
    padding-top: 18px;
    padding-bottom: 16px;
  }

  .masthead__side { display: none; }
  .masthead__center { align-items: flex-start; }
  .masthead__brand { align-items: flex-start; }
  .masthead__wordmark { font-size: 30px; }
  .masthead__tagline { margin-top: 2px; }

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

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: flex-start;
    overflow-y: auto;
    padding: 88px 0 40px;
    background: #08241E;
    border-top: 0;
    border-bottom: 0;
    transform: translateY(-102%);
    visibility: hidden;
    transition: transform 0.42s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s linear 0.42s;
  }

  .site-nav[data-open] {
    transform: none;
    visibility: visible;
    transition: transform 0.42s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s linear 0s;
  }

  .site-nav__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 0;
    padding-bottom: 0;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
  }

  .site-nav__item { border-bottom: 1px solid var(--line); }

  .site-nav__link {
    display: block;
    padding: 17px 4px;
    font-size: 21px;
    letter-spacing: 0.05em;
  }

  .site-nav__link[aria-current="page"] {
    background: transparent;
    color: var(--cyan);
    clip-path: none;
    border-left: 3px solid var(--lime);
    padding-left: 14px;
  }

  .site-nav__note {
    position: static;
    display: block;
    margin-top: 26px;
    padding: 0 4px;
  }

  body.is-nav-open { overflow: hidden; }

  .section { padding: 50px 0; }
  .section--tight { padding: 32px 0; }
  .bs-grid { gap: 20px; }
  .bs-grid--2,
  .bs-grid--3 { grid-template-columns: minmax(0, 1fr); }
  .site-footer { margin-top: 56px; padding-top: 44px; }
}

@media (max-width: 600px) {
  h1 { font-size: clamp(34px, 10vw, 46px); }
  .bs-panel { padding: 18px; }
  .bs-panel--notch { padding: 20px; }
  .bs-table th,
  .bs-table td { padding: 10px 11px; }
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .footer__bar { justify-content: flex-start; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  .bs-skip,
  .site-nav,
  .site-nav__link,
  .nav-toggle,
  .nav-toggle__bars,
  .nav-toggle__bars::before,
  .nav-toggle__bars::after,
  .bs-btn,
  .bs-chip,
  .footer__link,
  .masthead__wordmark {
    transition: none !important;
  }
}