/* ============================================================
   AB体育主站 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 侧边轨道头部 / 页脚 / 通用组件
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { max-width: 100%; display: block; }
html.nav-open, html.nav-open body { overflow: hidden; }

:root {
  --ink-950: #050A16;
  --ink-900: #0B1B3A;
  --ink-800: #132A54;
  --ink-700: #1B3A6E;
  --orange: #FF6B2C;
  --orange-soft: #FF9A4D;
  --snow: #F5F7FA;
  --snow-70: rgba(245, 247, 250, 0.72);
  --snow-50: rgba(245, 247, 250, 0.5);
  --barley: #3E9B6B;
  --butter: #F2B84B;
  --rock: #6B7280;
  --neon: #35D0E0;
  --clay: #C65A3A;
  --line: rgba(245, 247, 250, 0.12);
  --line-strong: rgba(245, 247, 250, 0.22);
  --rail-w: 264px;
  --bar-h: 62px;
  --cut: 16px;
  --maxw: 1180px;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-num: "Oswald", "DIN Condensed", "Arial Narrow", "Roboto Condensed", var(--font-sans);
  --shadow: 0 20px 46px -26px rgba(0, 0, 0, 0.95);
  --ease: cubic-bezier(0.22, 0.7, 0.28, 1);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--snow-70);
  background-color: var(--ink-950);
  background-image:
    radial-gradient(900px 520px at 84% -12%, rgba(255, 107, 44, 0.16), transparent 62%),
    radial-gradient(760px 480px at 2% 6%, rgba(53, 208, 224, 0.1), transparent 64%),
    linear-gradient(180deg, #0B1B3A 0%, #050A16 48%, #050A16 100%);
  padding-top: var(--bar-h);
  min-height: 100vh;
}

h1, h2, h3, h4 {
  color: var(--snow);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.08em;
}
h1 { font-size: clamp(30px, 5.2vw, 60px); }
h2 { font-size: clamp(24px, 3.4vw, 42px); }
h3 { font-size: clamp(19px, 2.2vw, 26px); }
p { text-wrap: pretty; }
strong { color: var(--snow); }

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 通用容器 ---------- */
.wrap {
  width: min(100% - 32px, var(--maxw));
  margin-inline: auto;
}
.page { padding-block: clamp(26px, 4.4vw, 56px) clamp(30px, 5vw, 64px); }

.section {
  position: relative;
  padding-block: clamp(34px, 5.6vw, 78px);
}
.section + .section { border-top: 1px solid var(--line); }
[data-section] { scroll-margin-top: calc(var(--bar-h) + 16px); }
.section[data-section].is-current::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12%;
  bottom: 12%;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), rgba(255, 107, 44, 0));
}

.section-head { display: grid; gap: 12px; margin-bottom: clamp(20px, 3vw, 34px); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--orange-soft);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  transform: skewX(-28deg);
}
.section-title { color: var(--snow); letter-spacing: 0.08em; }
.section-desc { max-width: 62ch; color: var(--snow-70); font-size: 15.5px; }
.lede { max-width: 64ch; font-size: clamp(16px, 1.5vw, 19px); color: var(--snow-70); }
.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  border-radius: 4px;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.btn-primary { background: linear-gradient(120deg, var(--orange), var(--orange-soft)); color: var(--ink-950); }
.btn-primary:hover { transform: translateY(-2px); background: linear-gradient(120deg, var(--orange-soft), var(--butter)); }
.btn-ghost { background: rgba(19, 42, 84, 0.55); border-color: var(--line-strong); color: var(--snow); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--orange); color: var(--orange-soft); }

.copy-btn {
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange-soft);
  border: 1px solid rgba(255, 107, 44, 0.45);
  border-radius: 999px;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease);
}
.copy-btn:hover { background: rgba(255, 107, 44, 0.18); color: var(--snow); }
.copy-btn.is-done { background: var(--barley); border-color: var(--barley); color: var(--snow); }

/* ---------- 头部：移动顶部条 + 抽屉 ---------- */
.rail-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 70;
  height: var(--bar-h);
}
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 95;
  background: rgba(245, 247, 250, 0.08);
  pointer-events: none;
}
.read-progress-fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--neon), var(--orange) 55%, var(--butter));
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 120;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-950);
  background: var(--orange);
  border-radius: 6px;
  transform: translateY(-180%);
  transition: transform 0.22s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.rail-bar {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: var(--bar-h);
  padding: 0 14px;
  background: linear-gradient(180deg, #0C1E3E, #08152C);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  background: linear-gradient(140deg, var(--orange), var(--orange-soft));
  clip-path: polygon(0 0, 100% 0, 100% 66%, 66% 100%, 0 100%);
}
.brand-mark-line {
  position: absolute;
  left: 8px;
  top: 11px;
  width: 20px;
  height: 2px;
  background: var(--ink-950);
  box-shadow: 0 6px 0 0 var(--ink-950);
}
.brand-mark-dot {
  position: absolute;
  left: 8px;
  bottom: 8px;
  width: 6px;
  height: 6px;
  background: var(--ink-950);
  border-radius: 50%;
}
.brand-text { display: grid; gap: 1px; min-width: 0; }
.brand-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--snow);
  white-space: nowrap;
}
.brand-sub {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--snow-50);
  white-space: nowrap;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 8px 14px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--snow);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.nav-toggle:hover { border-color: var(--orange); color: var(--orange-soft); }
.nav-toggle-bars { display: grid; gap: 4px; width: 18px; }
.nav-toggle-bars i {
  display: block;
  height: 2px;
  background: var(--orange);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
[data-site-header][data-open] .nav-toggle-bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
[data-site-header][data-open] .nav-toggle-bars i:nth-child(2) { opacity: 0; }
[data-site-header][data-open] .nav-toggle-bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.rail-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: min(86vw, 320px);
  padding: calc(var(--bar-h) + 20px) 20px 28px;
  overflow-y: auto;
  background: linear-gradient(165deg, #10244A, #050A16 72%);
  border-right: 1px solid var(--line-strong);
  transform: translateX(-102%);
  transition: transform 0.38s var(--ease);
}
[data-site-header][data-open] .rail-nav { transform: translateX(0); }

.rail-scrim {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: rgba(5, 10, 22, 0.74);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}
[data-site-header][data-open] .rail-scrim { opacity: 1; pointer-events: auto; }

.rail-nav-title {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--orange-soft);
}
.rail-nav-list { display: grid; gap: 4px; }
.rail-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 12px 11px 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--snow-70);
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.rail-link:hover { background: rgba(245, 247, 250, 0.05); color: var(--snow); }
.rail-index {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--rock);
}
.rail-label { font-size: 15px; letter-spacing: 0.06em; }
.rail-link[aria-current="page"] {
  color: var(--snow);
  background: linear-gradient(90deg, rgba(255, 107, 44, 0.22), rgba(255, 107, 44, 0));
  border-color: rgba(255, 107, 44, 0.42);
}
.rail-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  bottom: 11px;
  width: 3px;
  background: var(--orange);
}
.rail-link[aria-current="page"] .rail-index { color: var(--orange); }

.rail-cta { display: grid; gap: 10px; margin-top: auto; }
.rail-note {
  padding-top: 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--snow-50);
  border-top: 1px dashed var(--line-strong);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 88px);
  padding: clamp(32px, 4.6vw, 62px) 0 20px;
  color: var(--snow-70);
  background: linear-gradient(180deg, #050A16, #0B1B3A 58%, #050A16);
  border-top: 1px solid var(--line-strong);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--butter) 34%, var(--barley) 62%, var(--neon));
}
.footer-grid {
  width: min(100% - 32px, var(--maxw));
  margin-inline: auto;
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}
.footer-brand { display: grid; gap: 12px; align-content: start; }
.footer-brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--snow);
}
.footer-summary { max-width: 36ch; font-size: 14px; color: var(--snow-70); }
.footer-badge {
  justify-self: start;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--butter);
  border: 1px solid rgba(242, 184, 75, 0.5);
  background: rgba(242, 184, 75, 0.1);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.footer-col { display: grid; gap: 12px; align-content: start; }
.footer-title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--orange-soft);
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-strong);
}
.footer-list { display: grid; gap: 4px; }
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  font-size: 14px;
  color: var(--snow-70);
  transition: color 0.25s var(--ease), transform 0.25s var(--ease);
}
.footer-link::before {
  content: "";
  width: 8px;
  height: 2px;
  background: var(--rock);
  transition: background-color 0.25s var(--ease), width 0.25s var(--ease);
}
.footer-link:hover { color: var(--snow); transform: translateX(3px); }
.footer-link:hover::before { background: var(--orange); width: 14px; }

.footer-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 13.5px;
}
.footer-label {
  flex: 0 0 auto;
  padding: 2px 8px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--neon);
  border: 1px solid rgba(53, 208, 224, 0.35);
  border-radius: 999px;
}
.footer-value { color: var(--snow-70); word-break: break-all; }
.footer-note { font-size: 12.5px; color: var(--snow-50); }

.footer-base {
  width: min(100% - 32px, var(--maxw));
  margin: clamp(24px, 3vw, 38px) auto 0;
  padding-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--rock);
  border-top: 1px solid var(--line);
}
.footer-icp { letter-spacing: 0.08em; }
.footer-copy { font-family: var(--font-num); letter-spacing: 0.08em; }

/* ---------- 面包屑 ---------- */
.breadcrumbs { font-size: 13px; color: var(--rock); }
.breadcrumbs-list { display: flex; flex-wrap: wrap; gap: 8px; }
.breadcrumbs-item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs-item::after { content: "/"; color: var(--line-strong); }
.breadcrumbs-item:last-child::after { content: none; }
.breadcrumbs-link { color: var(--snow-70); transition: color 0.25s var(--ease); }
.breadcrumbs-link:hover { color: var(--orange-soft); }

/* ---------- 网格与 Bento ---------- */
.grid-2, .grid-3 { display: grid; gap: 16px; }

.bento { display: grid; gap: 16px; grid-template-columns: 1fr; }
.bento-card {
  position: relative;
  padding: 18px;
  background: linear-gradient(160deg, rgba(19, 42, 84, 0.92), rgba(11, 27, 58, 0.92));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.bento-card:hover { border-color: rgba(255, 107, 44, 0.45); transform: translateY(-3px); }

.panel {
  position: relative;
  padding: 20px;
  background: linear-gradient(155deg, rgba(19, 42, 84, 0.9), rgba(5, 10, 22, 0.9));
  border: 1px solid var(--line);
}
.panel-cut {
  --cut: 18px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}
.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px dashed var(--line-strong);
}

/* ---------- 比分与数据 ---------- */
.score-strip {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 30px);
  padding: clamp(16px, 2.4vw, 26px);
  background: linear-gradient(120deg, rgba(19, 42, 84, 0.95), rgba(5, 10, 22, 0.92));
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--orange);
}
.score-team { flex: 1 1 0; min-width: 0; }
.score-team-name { font-size: 15px; font-weight: 700; letter-spacing: 0.06em; color: var(--snow); }
.score-team-meta { font-size: 12px; color: var(--snow-50); }
.score-num {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 120px);
  line-height: 0.86;
  letter-spacing: -0.02em;
  color: var(--snow);
}
.score-num--accent { color: var(--orange); }
.score-vs {
  font-family: var(--font-num);
  font-size: 20px;
  letter-spacing: 0.1em;
  color: var(--rock);
}
.score-meta { font-size: 12.5px; letter-spacing: 0.08em; color: var(--snow-50); }

.stat-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: rgba(19, 42, 84, 0.55);
  border: 1px solid var(--line);
}
.stat-value {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(30px, 4.4vw, 48px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--snow);
}
.stat-label { font-size: 12.5px; letter-spacing: 0.1em; color: var(--snow-50); }
.delta-up { color: var(--barley); font-weight: 700; }
.delta-down { color: var(--clay); font-weight: 700; }

/* ---------- 状态标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--snow-70);
  background: rgba(19, 42, 84, 0.6);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}
.tag--live { color: var(--ink-950); background: var(--orange); border-color: var(--orange); }
.tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-950);
  animation: tagPulse 1.6s ease-in-out infinite;
}
.tag--done { color: var(--snow); background: rgba(198, 90, 58, 0.28); border-color: rgba(198, 90, 58, 0.65); }
.tag--ok { color: var(--snow); background: rgba(62, 155, 107, 0.28); border-color: rgba(62, 155, 107, 0.65); }
.tag--gold { color: var(--butter); background: rgba(242, 184, 75, 0.12); border-color: rgba(242, 184, 75, 0.5); }
@keyframes tagPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

/* ---------- 筛选 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-btn {
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--snow-70);
  background: rgba(19, 42, 84, 0.5);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.filter-btn:hover { color: var(--snow); border-color: var(--orange-soft); }
.filter-btn[aria-pressed="true"] { color: var(--ink-950); background: var(--orange); border-color: var(--orange); }

/* ---------- 战报时间线 ---------- */
.stream { position: relative; padding-left: 26px; }
.stream::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), rgba(53, 208, 224, 0.5) 55%, rgba(53, 208, 224, 0));
}
.stream-item { position: relative; padding: 14px 0; border-bottom: 1px dashed var(--line); }
.stream-item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 22px;
  width: 11px;
  height: 11px;
  background: var(--ink-900);
  border: 2px solid var(--orange);
  transform: rotate(45deg);
}
.stream-time { font-family: var(--font-num); font-size: 13px; letter-spacing: 0.1em; color: var(--neon); }
.stream-title { font-size: 17px; font-weight: 700; color: var(--snow); letter-spacing: 0.04em; }
.stream-text { font-size: 14.5px; color: var(--snow-70); }

/* ---------- 页内章节轨道 ---------- */
.local-route {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px;
  background: rgba(5, 10, 22, 0.55);
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
}
.local-route-link {
  padding: 7px 12px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--snow-70);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.local-route-link:hover { color: var(--snow); border-color: var(--line-strong); }
.local-route-link[aria-current="true"] {
  color: var(--orange-soft);
  background: rgba(255, 107, 44, 0.16);
  border-color: rgba(255, 107, 44, 0.45);
}

/* ---------- 图片容器（页面阶段放入图片或氛围图） ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background-color: var(--ink-800);
  background-image:
    linear-gradient(140deg, rgba(53, 208, 224, 0.16), rgba(255, 107, 44, 0.16)),
    repeating-linear-gradient(115deg, rgba(245, 247, 250, 0.06) 0 10px, transparent 10px 20px);
  background-size: cover, auto;
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media-16x9 { aspect-ratio: 16 / 9; }
.media-4x3 { aspect-ratio: 4 / 3; }
.media-1x1 { aspect-ratio: 1 / 1; }
.media-21x9 { aspect-ratio: 21 / 9; }
.media--framed::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 68px;
  height: 68px;
  background: linear-gradient(135deg, transparent 48%, rgba(255, 107, 44, 0.55) 48%);
  pointer-events: none;
}
.media-caption { margin-top: 8px; font-size: 12.5px; color: var(--snow-50); }

/* ---------- 显现与工具 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
.is-hidden { display: none !important; }

/* ---------- 断点 ---------- */
@media (max-width: 400px) {
  .brand-sub { display: none; }
}

@media (min-width: 700px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bento { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-2 { grid-column: span 2; }
  .col-3 { grid-column: span 3; }
  .col-4 { grid-column: span 4; }
  .col-6 { grid-column: span 6; }
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  body { padding-top: 0; padding-left: var(--rail-w); }

  .rail-header {
    top: 0;
    right: auto;
    bottom: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    width: var(--rail-w);
    height: 100vh;
    background: linear-gradient(180deg, rgba(11, 27, 58, 0.97), rgba(5, 10, 22, 0.99));
    border-right: 1px solid var(--line);
  }
  .rail-header::after {
    content: "";
    position: absolute;
    top: 0;
    right: -1px;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--orange), rgba(255, 107, 44, 0) 26%, rgba(255, 107, 44, 0) 74%, var(--neon));
    pointer-events: none;
  }
  .rail-bar {
    height: auto;
    padding: 26px 20px 18px;
    background: transparent;
    border-bottom: 0;
    justify-content: flex-start;
  }
  .brand-mark { width: 40px; height: 40px; }
  .nav-toggle { display: none; }

  .rail-nav {
    position: static;
    transform: none;
    width: auto;
    flex: 1 1 auto;
    min-height: 0;
    padding: 0 20px 24px;
    overflow-y: auto;
    background: transparent;
    border-right: 0;
  }

  .rail-scrim { display: none; }
  .read-progress { left: var(--rail-w); }

  .footer-grid { grid-template-columns: 1.5fr 0.8fr 0.8fr 1.2fr; gap: 32px; }
  .footer-base { margin-top: 34px; }
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .section[data-section] { scroll-margin-top: 24px; }
  [data-section] { scroll-margin-top: 24px; }
}

@media (min-width: 1280px) {
  :root { --rail-w: 280px; }
}

/* ---------- 降低动效 ---------- */
@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;
  }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .read-progress-fill { transition: none; }
}