/* ==========================================================================
   三亿体育 · 共享样式表 /assets/site.css
   夜场墨绿基底 + 荧光绿锚点 · 模块化 Bento 信息板 · 粗野主义边框
   ========================================================================== */

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

html, body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }

:root {
  /* 色彩 */
  --sy-night: #071A1C;
  --sy-deep: #0B2B2E;
  --sy-lime: #6BFF7A;
  --sy-amber: #FFB020;
  --sy-red: #FF5A4E;
  --sy-paper: #F4F7F5;
  --sy-graphite: #1E2A2B;
  --sy-mist: #93ABA8;
  --sy-table: #CFE3DE;
  --sy-silver: #9AA8A6;

  /* 字体 */
  --sy-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --sy-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 字号阶梯：12 / 13 / 16 / 20 / 28 / 44 / 72 / 96 */
  --sy-fs-12: 0.75rem;
  --sy-fs-13: 0.8125rem;
  --sy-fs-16: 1rem;
  --sy-fs-20: 1.25rem;
  --sy-fs-28: 1.75rem;
  --sy-fs-44: 2.75rem;
  --sy-fs-72: 4.5rem;
  --sy-fs-96: 6rem;

  /* 边框 / 阴影 */
  --sy-bd-strong: 2px solid var(--sy-graphite);
  --sy-bd-lime: 1px solid var(--sy-lime);
  --sy-hair: 1px solid rgba(147, 171, 168, 0.22);
  --sy-shadow: 6px 6px 0 rgba(0, 0, 0, 0.42);
  --sy-shadow-sm: 3px 3px 0 rgba(0, 0, 0, 0.5);
  --sy-shadow-pop: 5px 5px 0 var(--sy-graphite);

  /* 尺度 */
  --sy-step: 8px;
  --sy-container: 1240px;
  --sy-header-h: 62px;

  color-scheme: dark;
}

html {
  scroll-behavior: auto;
  scroll-padding-top: calc(var(--sy-header-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background-color: var(--sy-deep);
  color: var(--sy-paper);
  font-family: var(--sy-sans);
  font-size: var(--sy-fs-16);
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 极淡的网格底纹，营造数据面板感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(147, 171, 168, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147, 171, 168, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
}

:focus-visible {
  outline: 2px solid var(--sy-lime);
  outline-offset: 3px;
}
.sy-btn:focus-visible { outline-color: var(--sy-amber); }

.sy-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;
}

/* ---------- 容器 ---------- */
.sy-container {
  width: min(calc(100% - 32px), var(--sy-container));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}
@media (min-width: 768px) {
  .sy-container { width: min(calc(100% - 64px), var(--sy-container)); }
}

/* ---------- 文字与排版 ---------- */
.sy-title-xl,
.sy-title,
.sy-lead,
.sy-num,
.sy-stat { font-feature-settings: "tnum" 1; }

.sy-title-xl {
  font-size: var(--sy-fs-44);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.01em;
}
@media (min-width: 768px) {
  .sy-title-xl { font-size: var(--sy-fs-72); }
}
@media (min-width: 1100px) {
  .sy-title-xl.sy-title--mega { font-size: var(--sy-fs-96); }
}

.sy-title {
  font-size: var(--sy-fs-28);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: 0.01em;
}

.sy-lead {
  font-size: var(--sy-fs-20);
  line-height: 1.7;
  font-weight: 400;
}

.sy-num {
  font-family: var(--sy-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.sy-stat {
  display: block;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-44);
  font-weight: 700;
  line-height: 1;
  color: var(--sy-lime);
}
.sy-stat--amber { color: var(--sy-amber); }
.sy-stat--red { color: var(--sy-red); }
.sy-stat--sm { font-size: var(--sy-fs-28); }

.sy-note {
  font-size: var(--sy-fs-12);
  line-height: 1.85;
  letter-spacing: 0.04em;
  color: var(--sy-mist);
}

.sy-link {
  color: var(--sy-lime);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.sy-link:hover,
.sy-link:focus-visible { border-bottom-color: var(--sy-lime); }

/* ---------- 头部：紧凑命令栏 ---------- */
.sy-skip {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 200;
  display: inline-block;
  padding: 10px 18px;
  background: var(--sy-lime);
  color: var(--sy-night);
  font-size: var(--sy-fs-13);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-decoration: none;
  border: var(--sy-bd-strong);
  transition: top 0.16s ease;
}
.sy-skip:focus { top: 12px; }

.sy-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--sy-night);
  border-bottom: var(--sy-bd-strong);
}
.sy-header[data-scrolled] { box-shadow: 0 10px 0 rgba(7, 26, 28, 0.55); }

.sy-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--sy-header-h);
  position: relative;
}

.sy-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--sy-paper);
}
.sy-brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: var(--sy-lime);
  color: var(--sy-night);
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-13);
  font-weight: 700;
  letter-spacing: -0.04em;
  border: var(--sy-bd-strong);
}
.sy-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.sy-brand__name {
  font-size: var(--sy-fs-16);
  font-weight: 900;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.sy-brand__line {
  font-size: var(--sy-fs-12);
  letter-spacing: 0.06em;
  color: var(--sy-mist);
  white-space: nowrap;
}

.sy-nav { margin-inline: auto; }
.sy-nav__list { display: flex; align-items: center; gap: 2px; }
.sy-nav__item { display: block; }
.sy-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 10px;
  font-size: var(--sy-fs-13);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--sy-paper);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.sy-nav__idx {
  font-family: var(--sy-mono);
  font-size: 11px;
  color: var(--sy-mist);
  letter-spacing: 0;
}
.sy-nav__link::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 3px;
  height: 2px;
  background: var(--sy-lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s ease;
}
.sy-nav__link:hover,
.sy-nav__link:focus-visible { color: var(--sy-lime); }
.sy-nav__link:hover::after,
.sy-nav__link:focus-visible::after { transform: scaleX(1); }
.sy-nav__link[aria-current="page"] {
  color: var(--sy-lime);
  background: rgba(107, 255, 122, 0.08);
  border-color: var(--sy-lime);
}
.sy-nav__link[aria-current="page"] .sy-nav__idx { color: var(--sy-lime); }
.sy-nav__link[aria-current="page"]::after { transform: scaleX(1); }

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

.sy-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--sy-fs-12);
  letter-spacing: 0.06em;
  color: var(--sy-mist);
  white-space: nowrap;
}
.sy-status__dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--sy-lime);
  box-shadow: 0 0 0 3px rgba(107, 255, 122, 0.18);
}

.sy-nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--sy-deep);
  color: var(--sy-lime);
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.1em;
  border: var(--sy-bd-strong);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.sy-nav-toggle__bars { display: grid; gap: 4px; }
.sy-nav-toggle__bars span {
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform 0.15s ease;
}
.sy-nav-toggle__text { white-space: nowrap; }
.sy-nav-toggle[aria-expanded="true"] {
  background: var(--sy-lime);
  color: var(--sy-night);
  border-color: var(--sy-lime);
}
.sy-nav-toggle[aria-expanded="true"] .sy-nav-toggle__bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}
.sy-nav-toggle[aria-expanded="true"] .sy-nav-toggle__bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

.sy-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: rgba(107, 255, 122, 0.14);
  z-index: 2;
}
.sy-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: var(--sy-lime);
  transition: width 0.12s linear;
}

/* ---------- 按钮 ---------- */
.sy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: var(--sy-fs-13);
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-decoration: none;
  color: var(--sy-night);
  background: var(--sy-paper);
  border: var(--sy-bd-strong);
  box-shadow: var(--sy-shadow-sm);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.sy-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--sy-shadow-pop);
}
.sy-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--sy-graphite);
}
.sy-btn--primary {
  background: var(--sy-lime);
  color: var(--sy-night);
}
.sy-btn--amber {
  background: var(--sy-amber);
  color: var(--sy-night);
}
.sy-btn--ghost {
  background: transparent;
  color: var(--sy-lime);
  border-color: var(--sy-lime);
  box-shadow: none;
}
.sy-btn--ghost:hover {
  background: var(--sy-lime);
  color: var(--sy-night);
  transform: none;
  box-shadow: var(--sy-shadow-sm);
}
.sy-btn--sm { padding: 8px 14px; font-size: var(--sy-fs-12); }
.sy-btn--block { width: 100%; }

/* ---------- 分节 / 网格 ---------- */
.sy-section { padding-block: 48px; }
.sy-section--tight { padding-block: 32px; }
.sy-section--night { background: var(--sy-night); }
.sy-section--paper {
  background: var(--sy-paper);
  color: var(--sy-night);
}
.sy-section--paper .sy-title,
.sy-section--paper .sy-title-xl { color: var(--sy-night); }
.sy-section--paper .sy-note,
.sy-section--paper .sy-lead { color: rgba(30, 42, 43, 0.78); }
.sy-section--paper .sy-rule { background: rgba(30, 42, 43, 0.22); }
.sy-section--paper .sy-eyebrow { color: rgba(30, 42, 43, 0.7); }

@media (min-width: 768px) {
  .sy-section { padding-block: 80px; }
  .sy-section--tight { padding-block: 40px; }
}

.sy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.sy-span-2, .sy-span-3, .sy-span-4, .sy-span-6, .sy-span-8, .sy-span-12 { grid-column: auto; }

@media (min-width: 900px) {
  .sy-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 16px; }
  .sy-span-2 { grid-column: span 2; }
  .sy-span-3 { grid-column: span 3; }
  .sy-span-4 { grid-column: span 4; }
  .sy-span-6 { grid-column: span 6; }
  .sy-span-8 { grid-column: span 8; }
  .sy-span-12 { grid-column: span 12; }
}

/* ---------- 面板 ---------- */
.sy-panel {
  position: relative;
  padding: 24px;
  background: var(--sy-night);
  border: var(--sy-bd-strong);
  box-shadow: var(--sy-shadow);
}
.sy-panel--plain { box-shadow: none; }
.sy-panel--focus { border-color: var(--sy-lime); }
.sy-panel--paper {
  background: var(--sy-paper);
  color: var(--sy-night);
  box-shadow: var(--sy-shadow-pop);
}
.sy-panel--paper .sy-panel__text { color: rgba(30, 42, 43, 0.78); }
.sy-panel--paper .sy-note { color: rgba(30, 42, 43, 0.7); }
.sy-panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.sy-panel__title {
  font-size: var(--sy-fs-20);
  font-weight: 900;
  line-height: 1.35;
}
.sy-panel__text {
  font-size: var(--sy-fs-16);
  line-height: 1.75;
  color: var(--sy-mist);
}

/* ---------- 展览标签 ---------- */
.sy-eyebrow {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sy-mist);
}
.sy-eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--sy-lime);
}
.sy-eyebrow__num { color: var(--sy-lime); }
.sy-eyebrow__unit {
  padding-left: 8px;
  border-left: var(--sy-hair);
  letter-spacing: 0.08em;
  color: var(--sy-mist);
}

/* ---------- 标签 ---------- */
.sy-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.1em;
  color: var(--sy-mist);
  background: transparent;
  border: 1px solid rgba(147, 171, 168, 0.5);
}
.sy-tag--lime { background: var(--sy-lime); color: var(--sy-night); border-color: var(--sy-lime); }
.sy-tag--amber { background: var(--sy-amber); color: var(--sy-night); border-color: var(--sy-amber); }
.sy-tag--red { background: var(--sy-red); color: var(--sy-paper); border-color: var(--sy-red); }
.sy-tag--paper { background: var(--sy-paper); color: var(--sy-night); border-color: var(--sy-graphite); }

/* ---------- 分割线 ---------- */
.sy-rule {
  height: 1px;
  border: 0;
  background: rgba(147, 171, 168, 0.28);
}
.sy-rule--lime { background: var(--sy-lime); opacity: 0.6; }
.sy-rule--strong { height: 2px; background: var(--sy-graphite); }

/* ---------- 面包屑 ---------- */
.sy-breadcrumb { padding-block: 16px; }
.sy-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.sy-breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.08em;
  color: var(--sy-mist);
}
.sy-breadcrumb__item + .sy-breadcrumb__item::before {
  content: "/";
  color: rgba(147, 171, 168, 0.45);
}
.sy-breadcrumb__link {
  color: var(--sy-paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.sy-breadcrumb__link:hover,
.sy-breadcrumb__link:focus-visible {
  color: var(--sy-lime);
  border-bottom-color: var(--sy-lime);
}
.sy-breadcrumb__item[aria-current="page"] { color: var(--sy-lime); }

/* ---------- 数据表 ---------- */
.sy-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--sy-night);
  border: var(--sy-bd-strong);
}
.sy-table {
  width: 100%;
  min-width: 560px;
  font-size: var(--sy-fs-13);
  font-variant-numeric: tabular-nums;
}
.sy-table caption {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.12em;
  color: var(--sy-mist);
}
.sy-table th {
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--sy-paper);
  background: var(--sy-graphite);
}
.sy-table td {
  padding: 10px 14px;
  border-top: var(--sy-hair);
}
.sy-table td.sy-num,
.sy-table th.sy-num { text-align: right; }
.sy-table tbody tr:hover { background: rgba(107, 255, 122, 0.1); }
.sy-table--paper { background: var(--sy-paper); color: var(--sy-night); }
.sy-table--paper td { border-top-color: rgba(30, 42, 43, 0.22); }
.sy-table--paper tbody tr:nth-child(even) { background: var(--sy-table); }
.sy-table--paper tbody tr:hover { background: rgba(107, 255, 122, 0.4); }

/* ---------- 图片容器（页面阶段放图用） ---------- */
.sy-figure {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--sy-night);
  background-image: repeating-linear-gradient(45deg, rgba(147, 171, 168, 0.1) 0 2px, transparent 2px 12px);
  border: var(--sy-bd-strong);
}
.sy-figure img,
.sy-figure svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06);
}
.sy-figure--wide { aspect-ratio: 21 / 9; }
.sy-figure--square { aspect-ratio: 1 / 1; }
.sy-figure--tall { aspect-ratio: 3 / 4; }
.sy-figure--auto { aspect-ratio: auto; }
.sy-figure__tag {
  position: absolute;
  left: 0;
  top: 0;
  padding: 4px 10px;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.1em;
  color: var(--sy-night);
  background: var(--sy-lime);
}
.sy-figure__caption {
  margin-top: 8px;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.06em;
  color: var(--sy-mist);
}

/* ---------- 索引目录 ---------- */
.sy-index {
  display: grid;
  gap: 0;
  border-top: var(--sy-bd-strong);
}
.sy-index__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  text-decoration: none;
  color: var(--sy-paper);
  border-bottom: var(--sy-hair);
  transition: background-color 0.15s ease, padding 0.15s ease;
}
.sy-index__item:hover,
.sy-index__item:focus-visible {
  background: rgba(107, 255, 122, 0.07);
  padding-inline: 8px;
}
.sy-index__num {
  min-width: 2.4em;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-13);
  color: var(--sy-lime);
}
.sy-index__label {
  font-size: var(--sy-fs-20);
  font-weight: 900;
  line-height: 1.4;
}
.sy-index__meta {
  margin-left: auto;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.06em;
  color: var(--sy-mist);
}

/* ---------- 纵向注释 ---------- */
.sy-note-vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.42em;
  color: var(--sy-mist);
  user-select: none;
}

/* ---------- 显现 / 返回顶部 ---------- */
[data-reveal] { opacity: 1; }
html.sy-js [data-reveal] {
  opacity: 0;
  transition: opacity 0.12s linear;
}
html.sy-js [data-reveal].sy-visible { opacity: 1; }

.sy-to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.1em;
  color: var(--sy-night);
  background: var(--sy-lime);
  border: var(--sy-bd-strong);
  box-shadow: var(--sy-shadow-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s linear;
}
.sy-to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* ---------- 页脚 ---------- */
.sy-footer {
  position: relative;
  margin-top: 72px;
  background: var(--sy-night);
  border-top: var(--sy-bd-strong);
}
.sy-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--sy-lime);
  opacity: 0.55;
}
.sy-footer__inner { padding-block: 48px 28px; }

.sy-footer__top {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-bottom: 32px;
  border-bottom: var(--sy-hair);
}
.sy-footer__brand {
  font-size: var(--sy-fs-28);
  font-weight: 900;
  letter-spacing: 0.16em;
  line-height: 1.2;
}
.sy-footer__summary {
  margin-top: 12px;
  max-width: 34em;
  font-size: var(--sy-fs-13);
  line-height: 1.9;
  color: var(--sy-mist);
}
.sy-footer__contact {
  margin-top: 8px;
  font-size: var(--sy-fs-13);
  color: var(--sy-paper);
}
.sy-footer__contact .sy-num { color: var(--sy-lime); }
.sy-footer__address {
  margin-top: 8px;
  font-size: var(--sy-fs-13);
  color: var(--sy-mist);
}
.sy-footer__vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--sy-mono);
  font-size: var(--sy-fs-12);
  letter-spacing: 0.42em;
  color: rgba(147, 171, 168, 0.55);
  user-select: none;
  justify-self: start;
}

.sy-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-block: 32px;
  border-bottom: var(--sy-hair);
}
.sy-footer__title {
  font-size: var(--sy-fs-12);
  font-weight: 900;
  letter-spacing: 0.22em;
  color: var(--sy-lime);
}
.sy-footer__list {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}
.sy-footer__link {
  position: relative;
  display: inline-block;
  font-size: var(--sy-fs-13);
  color: var(--sy-paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.sy-footer__link:hover,
.sy-footer__link:focus-visible {
  color: var(--sy-lime);
  border-bottom-color: var(--sy-lime);
}

.sy-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-top: 24px;
  font-size: var(--sy-fs-12);
  color: var(--sy-mist);
}
.sy-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--sy-mono);
  letter-spacing: 0.04em;
}
.sy-footer__legal .sy-num { color: var(--sy-paper); }
.sy-footer__note { flex-basis: 100%; line-height: 1.85; }

/* ---------- 移动端：命令栏折叠 ---------- */
@media (max-width: 1100px) {
  .sy-nav__idx { display: none; }
}

@media (max-width: 960px) {
  .sy-nav-toggle { display: inline-flex; }
  .sy-status { display: none; }
  .sy-brand__line { display: none; }
  .sy-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin: 0;
    display: none;
    padding: 8px 16px 20px;
    background: var(--sy-night);
    border-top: var(--sy-bd-lime);
    border-bottom: var(--sy-bd-strong);
    max-height: calc(100vh - var(--sy-header-h));
    overflow-y: auto;
    z-index: 3;
  }
  .sy-nav[data-open] { display: block; }
  .sy-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .sy-nav__item { border-bottom: var(--sy-hair); }
  .sy-nav__item:last-child { border-bottom: 0; }
  .sy-nav__link {
    display: flex;
    padding: 14px 4px;
    font-size: var(--sy-fs-16);
  }
  .sy-nav__link::after { left: 4px; right: 4px; bottom: 8px; }
  .sy-nav__link[aria-current="page"] { border-color: var(--sy-lime); }
}

@media (min-width: 768px) {
  .sy-footer__inner { padding-block: 64px 32px; }
  .sy-footer__top {
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: end;
    gap: 40px;
  }
  .sy-footer__vertical { justify-self: end; }
  .sy-footer__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
  .sy-footer__note { flex-basis: auto; }
}

@media (max-width: 420px) {
  .sy-btn--sm { padding: 8px 10px; letter-spacing: 0.04em; }
  .sy-brand__name { letter-spacing: 0.04em; }
}

/* ---------- 减少动态效果 ---------- */
@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;
  }
  [data-reveal] { opacity: 1 !important; }
  .sy-btn:hover { transform: none; }
  .sy-to-top { transform: none; }
  .sy-progress__bar { transition: none; }
}

@media print {
  .sy-header, .sy-progress, .sy-to-top, .sy-skip { display: none !important; }
  body { background: #fff; color: #000; }
  body::before { display: none; }
}