/* ============================================================
   亚博赛事 · 共享站点样式 /assets/site.css
   暗色数据驾驶舱 · 居中刊头 · 粗野主义控制台面板
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: clamp(88px, 11vw, 140px);
}

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; }
table { border-collapse: collapse; }
hr { border: 0; }
a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-900: #07111F;
  --ink-800: #0B1830;
  --panel: #102642;
  --line: #2B4A70;
  --line-soft: rgba(43, 74, 112, 0.55);
  --text: #EAF6FF;
  --muted: #91A9C7;
  --cyan: #28E0FF;
  --cyan-soft: #8AF4FF;
  --lime: #C8FF3D;
  --violet: #7B61FF;
  --ink-deep: #04101C;

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

  --bd: 2px;
  --shadow-hard: 6px 6px 0 rgba(3, 9, 18, 0.9);
  --shadow-glow: 0 0 0 1px rgba(40, 224, 255, 0.35), 0 0 28px rgba(40, 224, 255, 0.18);
  --container: 1280px;
  --gutter: clamp(16px, 4.2vw, 56px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. Base ---------- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(920px 520px at 78% -12%, rgba(123, 97, 255, 0.22), transparent 70%),
    radial-gradient(760px 420px at 4% 2%, rgba(40, 224, 255, 0.14), transparent 68%);
  background-repeat: no-repeat;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 900; }
p { max-width: 68ch; }

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

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

#main-content:focus-visible { outline: 2px dashed var(--cyan); outline-offset: 8px; }

/* ---------- 4. 布局原语 ---------- */
.rig-container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.rig-main { display: block; padding-block: 0; }

.rig-section { padding-block: clamp(36px, 6vw, 72px); }
.rig-section--tight { padding-block: clamp(20px, 3vw, 36px); }

.rig-rule { height: var(--bd); background: var(--line); width: 100%; }

.rig-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 24px);
}
.rig-grid--split { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.rig-col-4 { grid-column: span 4; }
.rig-col-5 { grid-column: span 5; }
.rig-col-6 { grid-column: span 6; }
.rig-col-7 { grid-column: span 7; }
.rig-col-8 { grid-column: span 8; }
.rig-col-12 { grid-column: 1 / -1; }

/* ---------- 5. 排版组件 ---------- */
.rig-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--cyan);
  line-height: 1.6;
}
.rig-eyebrow::before { content: ""; width: 16px; height: 2px; background: var(--lime); flex: none; }

.rig-title { font-size: clamp(28px, 4.4vw, 56px); font-weight: 900; letter-spacing: -0.02em; line-height: 1.08; }
.rig-title--xl { font-size: clamp(46px, 9vw, 152px); letter-spacing: -0.04em; line-height: 0.94; }

.rig-lead { font-size: clamp(15px, 1.3vw, 18px); line-height: 1.8; color: var(--muted); max-width: 68ch; }

.rig-note {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}
.rig-note--left { display: inline-flex; align-items: center; gap: 10px; }
.rig-note--left::before { content: ""; width: 22px; height: 2px; background: var(--cyan); flex: none; }
.rig-note--vertical { writing-mode: vertical-rl; letter-spacing: 0.5em; }

.rig-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.16s var(--ease);
}
.rig-link:hover { color: var(--cyan-soft); }

.rig-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }

/* ---------- 6. 面包屑 ---------- */
.rig-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.rig-breadcrumb__link { color: var(--muted); text-decoration: none; border-bottom: 1px solid transparent; }
.rig-breadcrumb__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.rig-breadcrumb__sep { color: var(--line); }
.rig-breadcrumb__current { color: var(--text); }

/* ---------- 7. 按钮 / 标签 ---------- */
.rig-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border: var(--bd) solid var(--cyan);
  background: transparent;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(3, 9, 18, 0.85);
  cursor: pointer;
  transition: background 0.16s var(--ease), color 0.16s var(--ease),
    border-color 0.16s var(--ease), transform 0.16s var(--ease), box-shadow 0.16s var(--ease);
}
.rig-btn:hover { background: var(--cyan); color: var(--ink-deep); transform: translate(-2px, -2px); box-shadow: 6px 6px 0 rgba(3, 9, 18, 0.9); }
.rig-btn:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 rgba(3, 9, 18, 0.9); }

.rig-btn--accent { background: var(--lime); border-color: var(--lime); color: var(--ink-deep); }
.rig-btn--accent:hover { background: var(--cyan-soft); border-color: var(--cyan-soft); color: var(--ink-deep); }

.rig-btn--ghost { border-color: var(--line); color: var(--text); }
.rig-btn--ghost:hover { background: var(--panel); border-color: var(--cyan); color: var(--cyan); }

.rig-btn--sm { padding: 8px 14px; font-size: 13px; }

.rig-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.6;
}
.rig-tag--lime { border-color: var(--lime); color: var(--lime); background: rgba(200, 255, 61, 0.08); }
.rig-tag--cyan { border-color: var(--cyan); color: var(--cyan); background: rgba(40, 224, 255, 0.08); }

/* ---------- 8. 面板 ---------- */
.rig-panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: var(--bd) solid var(--line);
  box-shadow: var(--shadow-hard);
}
.rig-panel--glow { border-color: rgba(40, 224, 255, 0.55); box-shadow: var(--shadow-glow), var(--shadow-hard); }
.rig-panel__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ---------- 9. 编号索引 ---------- */
.rig-index { display: grid; border-top: 1px solid var(--line-soft); }
.rig-index__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: clamp(12px, 2vw, 26px);
  padding: clamp(12px, 1.6vw, 18px) 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.16s var(--ease);
}
.rig-index__item:hover { background: rgba(40, 224, 255, 0.05); }
.rig-index__num { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; color: var(--cyan); }
.rig-index__text { font-size: 15px; color: var(--text); }

/* ---------- 10. 图片容器基础规则 ---------- */
.rig-figure {
  position: relative;
  margin: 0;
  border: var(--bd) solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}
.rig-figure__frame {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    linear-gradient(140deg, #0B1830 0%, #102642 58%, #132C4C 100%);
}
.rig-figure__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06) brightness(0.92);
}
.rig-figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(40, 224, 255, 0.14) 1px, transparent 1px),
    linear-gradient(0deg, rgba(40, 224, 255, 0.1) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.5;
  mix-blend-mode: screen;
}
.rig-figure__caption {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.rig-figure--wide .rig-figure__frame { aspect-ratio: 21 / 9; }
.rig-figure--tall .rig-figure__frame { aspect-ratio: 3 / 4; }
.rig-figure--square .rig-figure__frame { aspect-ratio: 1 / 1; }

/* ---------- 11. 表格 ---------- */
.rig-table { width: 100%; font-size: 14px; }
.rig-table caption {
  padding-bottom: 10px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
.rig-table th,
.rig-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line-soft); }
.rig-table th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.rig-table td { color: var(--text); }
.rig-table tbody tr { transition: background 0.14s var(--ease); }
.rig-table tbody tr:hover { background: rgba(40, 224, 255, 0.06); }

/* ---------- 12. Skip link ---------- */
.rig-skip {
  position: fixed;
  top: 0;
  left: var(--gutter);
  z-index: 120;
  transform: translateY(-160%);
  padding: 10px 18px;
  background: var(--lime);
  color: var(--ink-deep);
  border: var(--bd) solid var(--ink-deep);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.16s var(--ease);
}
.rig-skip:focus { transform: translateY(10px); }

/* ---------- 13. Header ---------- */
.rig-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7, 17, 31, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: var(--bd) solid var(--line);
  transition: box-shadow 0.22s var(--ease);
}
.rig-header[data-compact="true"] { box-shadow: 0 14px 34px -20px rgba(0, 0, 0, 0.95); }

.rig-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: calc(-1 * var(--bd));
  height: 2px;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--cyan), var(--lime));
  box-shadow: 0 0 12px rgba(40, 224, 255, 0.65);
  transition: width 0.12s linear;
}

.rig-header__inner { position: relative; display: block; }

.rig-masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  padding-block: clamp(14px, 2vw, 24px);
  transition: padding 0.22s var(--ease);
}

.rig-brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-self: center;
  gap: 6px;
  padding: 2px 6px;
  text-decoration: none;
}
.rig-brand__mark {
  font-size: clamp(21px, 2.6vw, 32px);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--text);
  transition: color 0.18s var(--ease), text-shadow 0.18s var(--ease);
}
.rig-brand__sub {
  padding-left: 0.46em;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.46em;
  text-transform: uppercase;
  color: var(--cyan);
}
.rig-brand:hover .rig-brand__mark { color: #ffffff; text-shadow: 0 0 22px rgba(40, 224, 255, 0.5); }

.rig-utility {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(8px, 1.4vw, 16px);
}
.rig-utility__link {
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.rig-utility__link:hover { color: var(--cyan-soft); border-bottom-color: var(--cyan-soft); }

.rig-utility__link--accent {
  padding: 6px 12px;
  background: var(--lime);
  border: var(--bd) solid var(--lime);
  color: var(--ink-deep);
  font-weight: 800;
}
.rig-utility__link--accent:hover { background: transparent; border-color: var(--lime); color: var(--lime); }

.rig-nav {
  margin-top: clamp(8px, 1.2vw, 14px);
  border-top: 1px solid var(--line-soft);
}
.rig-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(2px, 1.2vw, 8px);
  padding-top: 8px;
}
.rig-nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 13px 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s var(--ease);
}
.rig-nav__link::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 5px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--lime));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s var(--ease);
}
.rig-nav__link:hover { color: var(--text); }
.rig-nav__link:hover::after { transform: scaleX(1); }
.rig-nav__link[aria-current="page"] { color: var(--cyan); }
.rig-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.rig-navtoggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--panel);
  border: var(--bd) solid var(--line);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  cursor: pointer;
  box-shadow: 4px 4px 0 rgba(3, 9, 18, 0.85);
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease), background 0.16s var(--ease);
}
.rig-navtoggle:hover { border-color: var(--cyan); color: var(--cyan); }
.rig-navtoggle__bars { position: relative; display: block; width: 18px; height: 10px; }
.rig-navtoggle__bars::before,
.rig-navtoggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), top 0.2s var(--ease);
}
.rig-navtoggle__bars::before { top: 0; }
.rig-navtoggle__bars::after { top: 8px; }
.rig-navtoggle[aria-expanded="true"] .rig-navtoggle__bars::before { top: 4px; transform: rotate(45deg); }
.rig-navtoggle[aria-expanded="true"] .rig-navtoggle__bars::after { top: 4px; transform: rotate(-45deg); }
.rig-navtoggle__text { line-height: 1; }

/* 压缩态 */
.rig-header[data-compact="true"] .rig-masthead { padding-block: 8px; }
.rig-header[data-compact="true"] .rig-brand__mark { font-size: clamp(18px, 2.1vw, 24px); }
.rig-header[data-compact="true"] .rig-brand__sub { font-size: 9px; }
.rig-header[data-compact="true"] .rig-nav { margin-top: 6px; }
.rig-header[data-compact="true"] .rig-nav__link { padding-block: 6px 9px; }

/* ---------- 14. Footer ---------- */
.rig-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 128px);
  padding-block: clamp(40px, 6vw, 72px) 0;
  border-top: var(--bd) solid var(--line);
  background:
    linear-gradient(180deg, rgba(123, 97, 255, 0.1) 0%, transparent 42%),
    var(--ink-800);
  overflow: hidden;
}
.rig-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, rgba(43, 74, 112, 0.38) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
  opacity: 0.35;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}
.rig-footer__inner { position: relative; z-index: 1; }

.rig-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.75fr);
  gap: clamp(28px, 5vw, 72px);
  padding-bottom: clamp(28px, 4vw, 52px);
}

.rig-footer__brand { display: flex; flex-direction: column; align-items: flex-start; }
.rig-brand--footer { justify-self: start; align-items: flex-start; padding-left: 0; }
.rig-brand--footer .rig-brand__mark { font-size: clamp(26px, 4vw, 44px); }
.rig-footer__note {
  margin-top: 14px;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}
.rig-footer__cta { margin-top: 22px; }

.rig-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.rig-footer__group { padding-top: 4px; }
.rig-footer__heading {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--cyan);
}
.rig-footer__heading::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--lime);
  transform: rotate(45deg);
  flex: none;
}
.rig-footer__list { display: grid; gap: 2px; }
.rig-footer__link {
  display: inline-block;
  padding: 6px 0 6px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), padding-left 0.16s var(--ease);
}
.rig-footer__link:hover { color: var(--cyan); border-left-color: var(--cyan); padding-left: 16px; }
.rig-footer__link[aria-current="page"] { color: var(--lime); border-left-color: var(--lime); }

.rig-footer__contact { display: grid; gap: 12px; }
.rig-footer__contact-item { display: grid; gap: 2px; }
.rig-footer__contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
.rig-footer__contact-value {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  overflow-wrap: anywhere;
}

.rig-copy {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 7px;
  background: rgba(16, 38, 66, 0.7);
  border: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.14s var(--ease), color 0.14s var(--ease), background 0.14s var(--ease);
}
.rig-copy:hover { border-color: var(--cyan); background: rgba(40, 224, 255, 0.12); }
.rig-copy[data-state="done"] { border-color: var(--lime); color: var(--lime); }
.rig-copy[data-state="fail"] { border-color: var(--muted); color: var(--muted); }

.rig-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: clamp(28px, 4vw, 44px);
  padding-block: 18px 22px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.rig-footer__legal-text { line-height: 1.9; }
.rig-footer__hours { line-height: 1.9; }

/* ---------- 15. 返回顶部 ---------- */
.rig-top {
  position: fixed;
  right: clamp(12px, 2.4vw, 28px);
  bottom: clamp(12px, 2.4vw, 28px);
  z-index: 70;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 52px;
  height: 52px;
  background: rgba(11, 24, 48, 0.92);
  border: var(--bd) solid var(--line);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  box-shadow: 4px 4px 0 rgba(3, 9, 18, 0.9);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  cursor: pointer;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease),
    visibility 0.2s linear, border-color 0.16s var(--ease), color 0.16s var(--ease);
}
.rig-top[data-visible="true"] { opacity: 1; visibility: visible; transform: none; }
.rig-top:hover { border-color: var(--cyan); color: var(--cyan-soft); }
.rig-top__arrow { font-size: 14px; line-height: 1; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .rig-note--left { display: none; }
}

@media (max-width: 1024px) {
  .rig-footer__top { grid-template-columns: minmax(0, 1fr); }
  .rig-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .rig-col-4,
  .rig-col-5,
  .rig-col-6,
  .rig-col-7,
  .rig-col-8 { grid-column: span 6; }
  .rig-col-12 { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .rig-header__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 12px;
  }
  .rig-masthead {
    grid-column: 1;
    grid-template-columns: minmax(0, 1fr);
    justify-items: start;
    padding-block: 12px;
  }
  .rig-brand { justify-self: start; align-items: flex-start; padding-left: 0; }
  .rig-utility { display: none; }
  .rig-navtoggle { grid-column: 2; display: inline-flex; justify-self: end; }
  .rig-nav {
    grid-column: 1 / -1;
    display: none;
    margin-top: 0;
    border-top: 1px solid var(--line-soft);
  }
  .rig-nav[data-open="true"] {
    display: block;
    max-height: 72vh;
    overflow-y: auto;
    padding-bottom: 8px;
  }
  .rig-nav__list { flex-direction: column; align-items: stretch; gap: 0; padding-top: 0; }
  .rig-nav__link {
    display: block;
    padding: 14px 4px;
    border-bottom: 1px solid var(--line-soft);
    font-size: 15px;
  }
  .rig-nav__link::after { display: none; }
  .rig-nav__link[aria-current="page"] { color: var(--lime); }
}

@media (max-width: 780px) {
  .rig-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rig-footer__legal { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .rig-grid { grid-template-columns: minmax(0, 1fr); }
  .rig-col-4,
  .rig-col-5,
  .rig-col-6,
  .rig-col-7,
  .rig-col-8,
  .rig-col-12 { grid-column: 1 / -1; }
  .rig-title--xl { letter-spacing: -0.03em; }
  .rig-panel { box-shadow: 4px 4px 0 rgba(3, 9, 18, 0.9); }
}

@media (max-width: 560px) {
  .rig-footer__cols { grid-template-columns: minmax(0, 1fr); }
  .rig-top { width: 46px; height: 46px; font-size: 9px; }
}

/* ---------- 17. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .rig-btn:hover,
  .rig-btn:active { transform: none; }
}