/* ============================================================
   亚星赛事 · 共享样式表 /assets/site.css
   1 Reset & Tokens  2 基础排版  3 外壳：左栏索引 + 页脚
   4 通用组件  5 图片容器  6 响应式与无障碍
   ============================================================ */

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

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

body, h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
a { color: inherit; }

:root {
  --ink-900: #0B1320;
  --ink-700: #142235;
  --slate-500: #4A5A6A;
  --fog-100: #E8ECF0;
  --paper-000: #F7F9FB;
  --volt: #FF6B1A;
  --signal: #18E0A8;
  --brick: #8C2F2F;
  --dark-gold: #A67C1E;
  --line-blue: #2D4A6B;

  --mist-300: #A8B6C4;
  --mist-400: #7C8C9C;

  --rail-w: 264px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --radius-pill: 999px;

  --font-head: "Noto Sans SC Condensed", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 2. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--fog-100);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(rgba(45, 74, 107, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 74, 107, 0.16) 1px, transparent 1px);
  background-size: 56px 56px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper-000);
}
h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 1.75rem); }
h3 { font-size: 1.25rem; }
p  { max-width: 74ch; }

.num, [data-num] { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.link-inline {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 26, 0.45);
}
.link-inline:hover { border-bottom-color: var(--volt); }

.rule {
  height: 1px;
  border: 0;
  margin: 32px 0;
  background: linear-gradient(90deg, var(--line-blue), transparent);
}

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

/* ---------- 3. 外壳 ---------- */
/* 3.1 跳转链接 */
.skip-link {
  position: fixed;
  top: -90px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--volt);
  color: var(--ink-900);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.85rem;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }

/* 3.2 头部：移动端顶部吸附栏 */
.site-rail {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  background: #0A121E;
  border-bottom: 1px solid rgba(45, 74, 107, 0.7);
  color: var(--fog-100);
}

.rail-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(20, 34, 53, 0.92);
  border-bottom: 1px solid rgba(45, 74, 107, 0.5);
}
.status-dot {
  width: 8px; height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(24, 224, 168, 0.16);
  animation: status-pulse 2.4s ease-in-out infinite;
}
@keyframes status-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.82); }
}
.status-text {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist-300);
}
.status-sep { color: var(--slate-500); }

.rail-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  flex: none;
  border-radius: 11px;
  background: var(--volt);
  color: var(--ink-900);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1;
}
.brand-text { display: block; }
.brand-name {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--paper-000);
}
.brand-tag {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}
.brand--footer { margin-bottom: 14px; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 107, 26, 0.5);
  background: rgba(255, 107, 26, 0.12);
  color: var(--volt);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}
.nav-toggle:hover { background: rgba(255, 107, 26, 0.22); }
.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 14px; height: 12px;
}
.nav-toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s ease;
}
.site-rail[data-open] .nav-toggle-icon span:first-child { transform: translateY(3px) rotate(45deg); }
.site-rail[data-open] .nav-toggle-icon span:last-child  { transform: translateY(-3px) rotate(-45deg); }

/* 3.3 导航（移动端面板） */
.site-nav {
  max-height: 0;
  visibility: hidden;
  overflow: hidden;
  border-top: 1px solid transparent;
  transition: max-height 0.3s ease, visibility 0.3s ease;
}
.site-rail[data-open] .site-nav {
  max-height: 78vh;
  visibility: visible;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top-color: rgba(45, 74, 107, 0.6);
}

.nav-index { padding: 8px 12px 4px; }

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px 10px 16px;
  border-radius: 14px;
  text-decoration: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--fog-100);
  transition: background-color 0.18s ease, color 0.18s ease;
}
.nav-link::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 22%; bottom: 22%;
  width: 3px;
  border-radius: 3px;
  background: var(--volt);
  opacity: 0;
  transform: scaleY(0.4);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.nav-link:hover { background: rgba(232, 236, 240, 0.06); }
.nav-num {
  min-width: 26px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist-400);
  transition: color 0.18s ease;
}
.nav-label { flex: 1; }
.nav-link[aria-current="page"] {
  background: linear-gradient(90deg, rgba(255, 107, 26, 0.18), rgba(255, 107, 26, 0));
  color: var(--paper-000);
}
.nav-link[aria-current="page"]::before { opacity: 1; transform: scaleY(1); }
.nav-link[aria-current="page"] .nav-num { color: var(--volt); }

.nav-foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px 20px;
  border-top: 1px dashed rgba(45, 74, 107, 0.6);
}
.nav-foot-note {
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--mist-400);
}
.nav-cta { align-self: flex-start; }

/* 3.4 滚动进度 */
.rail-progress {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: rgba(74, 90, 106, 0.3);
  pointer-events: none;
}
.rail-progress-track { position: absolute; inset: 0; display: block; }
.rail-progress-fill {
  position: absolute;
  inset: 0;
  display: block;
  background: var(--volt);
  transform: scaleX(var(--scroll-progress, 0));
  transform-origin: left center;
}
.rail-progress-value { display: none; }

/* 3.5 主内容区占位 */
.site-main { display: block; }

/* 3.6 页脚 */
.site-footer {
  position: relative;
  background: #0A121E;
  border-top: 1px solid var(--line-blue);
  padding: 48px 0 26px;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--volt) 0 18%, var(--signal) 18% 26%, transparent 26%);
  opacity: 0.9;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.footer-col { min-width: 0; }
.footer-col-title {
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(45, 74, 107, 0.7);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--mist-400);
  text-transform: uppercase;
}
.footer-note {
  margin: 0;
  max-width: 40ch;
  font-size: 0.85rem;
  color: var(--mist-300);
}
.footer-note--small {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--mist-400);
}
.footer-stamp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist-300);
}
.stamp-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(24, 224, 168, 0.16);
}

.footer-list { display: flex; flex-direction: column; gap: 10px; }
.footer-link {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--fog-100);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.footer-link:hover { color: var(--volt); border-bottom-color: var(--volt); }

.contact-list { display: flex; flex-direction: column; }
.contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 10px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(45, 74, 107, 0.6);
}
.contact-key {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--mist-400);
}
.contact-val {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--fog-100);
  word-break: break-all;
}
.contact-item--wide .contact-val {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--mist-300);
}
.copy-btn {
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(45, 74, 107, 0.9);
  background: rgba(45, 74, 107, 0.25);
  color: var(--mist-300);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}
.copy-btn:hover { border-color: var(--volt); color: var(--volt); }
.copy-btn.is-copied {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(24, 224, 168, 0.12);
}
.copy-status {
  min-height: 1.2em;
  margin: 10px 0 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--signal);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid rgba(45, 74, 107, 0.6);
}
.footer-legal {
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mist-400);
}
.icp { color: var(--mist-300); }

/* ---------- 4. 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--volt); color: var(--ink-900); }
.btn--primary:hover { background: #FF8244; }
.btn--ghost {
  background: transparent;
  border-color: rgba(232, 236, 240, 0.28);
  color: var(--paper-000);
}
.btn--ghost:hover { border-color: var(--volt); color: var(--volt); }
.btn--quiet { background: rgba(232, 236, 240, 0.08); color: var(--fog-100); }
.btn--quiet:hover { background: rgba(232, 236, 240, 0.16); }

.band { position: relative; }
.band--dark { background: var(--ink-900); }
.band--fog { background: var(--fog-100); color: #16202E; }
.band--paper { background: var(--paper-000); color: #0B1320; }
.band--fog h1, .band--fog h2, .band--fog h3, .band--fog h4,
.band--paper h1, .band--paper h2, .band--paper h3, .band--paper h4 { color: var(--ink-900); }
.band--fog .section-lead, .band--paper .section-lead { color: #3C4A59; }
.band--fog .card, .band--paper .card {
  background: #FFFFFF;
  border-color: rgba(11, 19, 32, 0.12);
  color: #16202E;
}
.band--fog .card-title, .band--paper .card-title { color: var(--ink-900); }
.band--fog .card-meta, .band--paper .card-meta { color: var(--slate-500); }

.section { padding: 64px 0; }
.section-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 70ch;
  margin-bottom: 32px;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--volt);
}
.section-title { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.section-lead { font-size: 0.95rem; color: var(--mist-300); }

.grid { display: grid; gap: 20px; }
.grid--2, .grid--3, .grid--split { grid-template-columns: minmax(0, 1fr); }

.card {
  position: relative;
  padding: 20px;
  border: 1px solid rgba(45, 74, 107, 0.65);
  border-radius: var(--radius-md);
  background: var(--ink-700);
}
.card-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--paper-000);
}
.card-meta {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(232, 236, 240, 0.24);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--fog-100);
}
.tag--orange { background: rgba(255, 107, 26, 0.12); border-color: rgba(255, 107, 26, 0.6); color: var(--volt); }
.tag--green  { background: rgba(24, 224, 168, 0.12); border-color: rgba(24, 224, 168, 0.55); color: var(--signal); }
.tag--gold   { background: rgba(166, 124, 30, 0.18); border-color: rgba(166, 124, 30, 0.72); color: #D8AC44; }
.tag--red    { background: rgba(140, 47, 47, 0.24); border-color: rgba(140, 47, 47, 0.85); color: #E08585; }

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
  color: var(--paper-000);
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--mist-400);
}

.dossier {
  overflow: hidden;
  border: 1px solid rgba(45, 74, 107, 0.6);
  border-radius: var(--radius-md);
  background: rgba(20, 34, 53, 0.6);
}
.dossier-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  border-top: 1px dashed rgba(45, 74, 107, 0.7);
}
.dossier-row:first-child { border-top: 0; }
.dossier-num {
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--volt);
  background: rgba(11, 19, 32, 0.55);
}
.dossier-body { padding: 14px 16px; min-width: 0; }

.compare { display: flex; flex-direction: column; gap: 14px; }
.compare-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 16px;
}
.compare-key { font-size: 0.85rem; color: var(--mist-300); }
.compare-values {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--paper-000);
}

.meter {
  position: relative;
  height: 10px;
  border-radius: var(--radius-pill);
  background: rgba(74, 90, 106, 0.32);
  overflow: hidden;
}
.meter-fill {
  display: block;
  height: 100%;
  width: 50%;
  border-radius: var(--radius-pill);
  background: var(--volt);
  transition: width 0.4s ease;
}
.meter--green .meter-fill { background: var(--signal); }
.meter--red   .meter-fill { background: var(--brick); }
.meter--gold  .meter-fill { background: var(--dark-gold); }

.breadcrumb { padding: 18px 0 0; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mist-400);
}
.breadcrumb-item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb-item + .breadcrumb-item::before { content: "/"; color: var(--slate-500); }
.breadcrumb-item a { color: var(--mist-300); text-decoration: none; }
.breadcrumb-item a:hover { color: var(--volt); }
.breadcrumb-current { color: var(--paper-000); }

/* ---------- 5. 图片容器 ---------- */
.figure-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(45, 74, 107, 0.65);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #101B2C 0%, #0B1320 100%);
}
.figure-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(45, 74, 107, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 74, 107, 0.35) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
  pointer-events: none;
}
.figure-frame img { width: 100%; height: 100%; object-fit: cover; }
.figure-frame--wide { aspect-ratio: 21 / 9; }
.figure-frame--square { aspect-ratio: 1 / 1; }
.figure-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist-400);
}

/* ---------- 6. 动效状态 ---------- */
html.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
html.js-ready [data-reveal].is-visible { opacity: 1; transform: none; }
html.js-ready [data-reveal="1"] { transition-delay: 70ms; }
html.js-ready [data-reveal="2"] { transition-delay: 140ms; }
html.js-ready [data-reveal="3"] { transition-delay: 210ms; }
html.js-ready [data-reveal="4"] { transition-delay: 280ms; }
html.js-ready [data-reveal="5"] { transition-delay: 350ms; }

/* ---------- 7. 响应式 ---------- */
@media (min-width: 720px) {
  .wrap { padding: 0 32px; }
  .grid { gap: 24px; }
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.3fr; gap: 40px; }
  .section { padding: 80px 0; }
}

@media (min-width: 1024px) {
  /* 固定左栏索引 */
  .site-rail {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 1px solid rgba(45, 74, 107, 0.7);
    background: linear-gradient(180deg, #0B1320 0%, #0E1929 100%);
  }
  .rail-status { padding: 14px 20px; }
  .rail-brand { padding: 18px 20px 14px; }
  .nav-toggle { display: none; }

  .site-nav {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    max-height: none;
    visibility: visible;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-top: 1px solid rgba(45, 74, 107, 0.6);
    padding-top: 8px;
    transition: none;
  }
  .nav-index { padding: 6px 12px; }
  .nav-foot { margin-top: auto; padding-bottom: 24px; }

  .rail-progress {
    left: auto; right: 0; top: 0; bottom: 0;
    width: 2px; height: auto;
  }
  .rail-progress-fill {
    transform: scaleY(var(--scroll-progress, 0));
    transform-origin: top center;
  }
  .rail-progress-value {
    display: block;
    position: absolute;
    right: 10px;
    bottom: 12px;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    color: var(--mist-400);
  }

  .site-main, .site-footer { margin-left: var(--rail-w); }
  .grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 32px; }
  .section { padding: 96px 0; }
  .section-head { margin-bottom: 40px; }
}

@media (min-width: 1440px) {
  :root { --rail-w: 288px; }
}

/* ---------- 8. 无障碍：减少动效 ---------- */
@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;
  }
  html.js-ready [data-reveal] { opacity: 1; transform: none; }
  .status-dot { animation: none; }
}