/* =========================================================
   龙腾娱乐主站 · 共享样式表 /assets/site.css
   北境赛场夜战 · 战术板式数据中枢
   ========================================================= */

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

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

html, body { margin: 0; padding: 0; }

body {
  min-height: 100%;
  background-color: var(--ink);
  color: var(--snow);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { max-width: 100%; height: auto; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: var(--ice); text-decoration: none; }
a:hover { color: var(--neon); }
table { border-collapse: collapse; }

::selection { background: var(--flame); color: #0B0704; }

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

/* 全局氛围层：冰蓝冷光 + 龙焰余温 + 战术网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(58% 46% at 12% -6%, rgba(23, 67, 160, 0.42), transparent 68%),
    radial-gradient(46% 40% at 96% 8%, rgba(43, 227, 208, 0.14), transparent 70%),
    radial-gradient(60% 50% at 78% 108%, rgba(255, 106, 26, 0.16), transparent 72%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(168, 203, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 203, 255, 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 12%, transparent 82%);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 12%, transparent 82%);
}

/* ---------- 2. tokens ---------- */
:root {
  --ink: #070B12;
  --ink-2: #0E1E33;
  --blue: #1743A0;
  --flame: #FF6A1A;
  --neon: #2BE3D0;
  --snow: #F2F7FF;
  --steel: #6E85A8;
  --battle: #FFC53D;
  --ice: #A8CBFF;
  --violet: #6A2CD6;

  --glass: rgba(242, 247, 255, 0.06);
  --glass-brd: rgba(168, 203, 255, 0.18);
  --line: rgba(168, 203, 255, 0.14);
  --line-soft: rgba(168, 203, 255, 0.08);
  --text-soft: #C9D8F2;

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

  --rail-w: 76px;
  --head-h: 68px;
  --radius: 4px;
  --gap: 24px;
  --offset: 24px;
  --dur: 180ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow-lift: 0 20px 44px -26px rgba(23, 67, 160, 0.95);
}

@media (max-width: 899px) {
  :root { --head-h: 60px; --gap: 18px; }
}

/* ---------- 3. 骨架：侧轨 + 正文层级 ---------- */
#main-content {
  position: relative;
  z-index: 1;
  display: block;
  padding-top: var(--head-h);
}

@media (min-width: 1080px) {
  body { padding-left: var(--rail-w); }
}

/* ---------- 4. 页头 ---------- */
.site-head {
  position: relative;
  z-index: 60;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-240%);
  padding: 10px 16px;
  background: var(--flame);
  color: #0B0704;
  font-weight: 700;
  font-size: 14px;
  border-radius: 3px;
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus { transform: none; color: #0B0704; }

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 90;
  transform: scaleX(0);
  transform-origin: 0 50%;
  opacity: 0;
  background: linear-gradient(90deg, var(--flame), var(--battle) 28%, var(--neon) 62%, var(--ice));
  transition: opacity var(--dur) var(--ease);
}
.progress[data-visible="true"] { opacity: 1; }

@media (min-width: 1080px) {
  .progress { left: var(--rail-w); }
}

/* 左侧品牌轨道 */
.rail {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 70;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 20px;
  background:
    linear-gradient(180deg, rgba(23, 67, 160, 0.42) 0%, rgba(7, 11, 18, 0.92) 42%, rgba(7, 11, 18, 0.98) 100%);
  border-right: 1px solid var(--line);
  overflow: hidden;
}

@media (min-width: 1080px) {
  .rail { display: flex; }
}

.rail__mark {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  transform: rotate(45deg);
  border-radius: 3px;
  background: linear-gradient(135deg, var(--flame), var(--neon));
  box-shadow: 0 0 20px rgba(255, 106, 26, 0.5);
}

.rail__line {
  display: block;
  flex: 0 1 auto;
  margin: auto 0;
  overflow: hidden;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(168, 203, 255, 0.55);
  white-space: nowrap;
}

.rail__foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.rail__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(43, 227, 208, 0.16), 0 0 14px rgba(43, 227, 208, 0.7);
}

.rail__icp {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(110, 133, 168, 0.85);
  white-space: nowrap;
}

/* 顶部导航条 */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 65;
  height: var(--head-h);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  padding-inline: clamp(14px, 3vw, 34px);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
}

@media (min-width: 1080px) {
  .topbar { left: var(--rail-w); }
}

.site-head[data-scrolled="true"] .topbar,
.site-head[data-open="true"] .topbar {
  background: rgba(7, 11, 18, 0.88);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom-color: var(--glass-brd);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--snow);
}
.brand:hover { color: var(--snow); }

.brand__mark {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  background: conic-gradient(from 140deg, var(--flame), var(--violet) 30%, var(--blue) 62%, var(--neon) 100%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

/* 导航 */
.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--text-soft);
  border-radius: 2px;
  transition: color var(--dur) var(--ease);
}
.nav__link:hover { color: var(--snow); }

.nav__link[aria-current="page"] {
  color: var(--snow);
  font-weight: 700;
}
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--flame), var(--neon));
}

.nav__extra { display: none; }

.head-actions {
  display: none;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

@media (min-width: 1200px) {
  .head-actions { display: inline-flex; }
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 1px solid var(--glass-brd);
  border-radius: 3px;
  background: var(--glass);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-toggle:hover { background: rgba(168, 203, 255, 0.14); border-color: var(--ice); }

.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--snow);
  border-radius: 1px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 899px) {
  .nav-toggle { display: inline-flex; }
  .head-actions { display: none; }
  html.is-nav-open { overflow: hidden; }

  .nav {
    position: fixed;
    top: var(--head-h);
    left: 0;
    right: 0;
    z-index: 64;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    max-height: calc(100vh - var(--head-h));
    overflow-y: auto;
    padding: 6px clamp(14px, 5vw, 26px) 22px;
    background: rgba(7, 11, 18, 0.97);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--glass-brd);
    box-shadow: 0 28px 60px -30px rgba(0, 0, 0, 0.9);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
  }

  .nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .nav__link {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding: 15px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
  }
  .nav__link::before {
    content: attr(data-index);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--steel);
    order: 2;
  }
  .nav__link[aria-current="page"]::after {
    left: 0;
    right: 0;
    bottom: -1px;
    height: 2px;
  }

  .nav__extra {
    display: grid;
    gap: 10px;
    margin-top: 18px;
  }
  .nav__extra .btn { justify-content: center; }
}

/* ---------- 5. 页脚 ---------- */
.site-foot {
  position: relative;
  z-index: 1;
  margin-top: clamp(48px, 8vw, 112px);
  padding: clamp(38px, 6vw, 72px) 0 26px;
  background: linear-gradient(180deg, rgba(14, 30, 51, 0.62) 0%, rgba(7, 11, 18, 0.98) 58%);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.site-foot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--flame), var(--violet) 34%, var(--blue) 62%, var(--neon));
}

.site-foot::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -100px;
  width: 440px;
  height: 440px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(23, 67, 160, 0.42), transparent 66%);
}

.site-foot__inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 3vw, 42px);
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .site-foot__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1080px) {
  .site-foot__inner { grid-template-columns: 1.5fr 1fr 1fr 1.4fr; }
}

.foot-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.02em;
  color: var(--snow);
}

.foot-brand__sub {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.foot-line {
  margin-top: 14px;
  max-width: 30em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

.foot-col--brand .tag { margin-top: 16px; }

.foot-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--snow);
}

.foot-title .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--flame);
}

.foot-list { display: grid; gap: 9px; }

.foot-link {
  display: inline-block;
  font-size: 14px;
  color: var(--text-soft);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.foot-link:hover {
  color: var(--neon);
  border-bottom-color: rgba(43, 227, 208, 0.5);
}

.foot-contact { display: grid; gap: 12px; }

.foot-contact li { display: grid; gap: 3px; }

.foot-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.foot-contact__value {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
  word-break: break-word;
}
.foot-contact li:nth-child(1) .foot-contact__value,
.foot-contact li:nth-child(2) .foot-contact__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--ice);
}

.foot-note {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 2px solid rgba(255, 106, 26, 0.55);
  font-size: 13px;
  line-height: 1.75;
  color: var(--steel);
}

.site-foot__legal {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: clamp(28px, 4vw, 50px);
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--steel);
}

.site-foot__legal-item { color: var(--steel); }

/* ---------- 6. 通用排版 ---------- */
.container {
  position: relative;
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 42px);
}

.section { padding-block: clamp(40px, 6vw, 84px); }
.section--tight { padding-block: clamp(24px, 3.5vw, 48px); }

.stack { display: grid; gap: var(--gap); }

.grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 258px), 1fr));
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }

/* 图文错位：偶数项下移 24px */
@media (min-width: 900px) {
  .stagger > *:nth-child(even) { margin-top: var(--offset); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: linear-gradient(90deg, var(--flame), var(--neon));
}

.h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4.6vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--snow);
}

.h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.35;
  color: var(--snow);
}

.lede {
  max-width: 34em;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.75;
  color: var(--text-soft);
}

.prose { display: grid; gap: 14px; }
.prose p { max-width: 40em; color: var(--text-soft); }
.prose p > strong { color: var(--snow); }

.measure { max-width: 40em; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

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

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, rgba(168, 203, 255, 0.35) 22%, rgba(43, 227, 208, 0.35) 78%, transparent);
}

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

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--sm { padding: 9px 13px; font-size: 13px; }

.btn--ghost {
  background: rgba(168, 203, 255, 0.06);
  border-color: rgba(168, 203, 255, 0.26);
  color: var(--ice);
}
.btn--ghost:hover {
  background: rgba(168, 203, 255, 0.14);
  border-color: var(--ice);
  color: var(--snow);
}

.btn--flame {
  background: linear-gradient(96deg, var(--flame), #FF8A3D);
  border-color: transparent;
  color: #0B0704;
  font-weight: 800;
}
.btn--flame:hover {
  color: #0B0704;
  box-shadow: 0 14px 30px -16px rgba(255, 106, 26, 0.9);
}

.btn--cut {
  padding-right: 24px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 11px) 100%, 0 100%);
}
.btn--cut:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--ink), 0 0 0 4px var(--neon);
}

/* ---------- 8. 层与卡片 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(180deg, rgba(14, 30, 51, 0.94), rgba(14, 30, 51, 0.72));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--snow);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(43, 227, 208, 0.45);
  box-shadow: var(--shadow-lift);
}

.card--cut {
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-brd);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  backdrop-filter: blur(12px) saturate(130%);
}

.panel {
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

/* ---------- 9. 标签与筛选 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  border: 1px solid rgba(168, 203, 255, 0.3);
  border-radius: 2px;
  background: rgba(168, 203, 255, 0.07);
  color: var(--ice);
  white-space: nowrap;
}
.tag--ice { color: var(--ice); border-color: rgba(168, 203, 255, 0.34); background: rgba(168, 203, 255, 0.1); }
.tag--flame { color: #FFD9C0; border-color: rgba(255, 106, 26, 0.5); background: rgba(255, 106, 26, 0.14); }
.tag--neon { color: #BFFAF2; border-color: rgba(43, 227, 208, 0.5); background: rgba(43, 227, 208, 0.12); }
.tag--battle { color: #FFE6AE; border-color: rgba(255, 197, 61, 0.5); background: rgba(255, 197, 61, 0.13); }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
}

.chip {
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ice);
  background: rgba(168, 203, 255, 0.05);
  border: 1px solid rgba(168, 203, 255, 0.22);
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.chip:hover { border-color: var(--ice); transform: translateY(-2px); }
.chip[aria-pressed="true"] {
  background: linear-gradient(94deg, var(--flame), #FF8A3D);
  border-color: transparent;
  color: #0B0704;
  font-weight: 700;
}

.is-filtered-out { display: none !important; }

/* ---------- 10. 轮次轨道 / 时间轴 / 表格 ---------- */
.round-strip {
  display: flex;
  gap: 10px;
  padding: 6px 2px 14px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.round-strip__item {
  scroll-snap-align: start;
  flex: 0 0 auto;
  min-width: 74px;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  text-align: center;
  color: var(--text-soft);
  background: rgba(14, 30, 51, 0.9);
  border: 1px solid var(--line);
  border-radius: 3px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.round-strip__item:hover,
.round-strip__item[aria-selected="true"] {
  color: var(--snow);
  border-color: rgba(255, 106, 26, 0.65);
  background: rgba(255, 106, 26, 0.14);
}

.timeline { position: relative; display: grid; gap: 18px; }
.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 7px;
  width: 2px;
  background: linear-gradient(180deg, var(--flame), var(--neon) 62%, transparent);
}

.timeline__item {
  position: relative;
  padding-left: 32px;
}
.timeline__item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 16px;
  height: 16px;
  border: 2px solid var(--neon);
  border-radius: 50%;
  background: var(--ink);
}

.data-table {
  width: 100%;
  font-size: 15px;
}

.data-table th {
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: left;
  color: var(--steel);
  border-bottom: 1px solid var(--glass-brd);
  white-space: nowrap;
}

.data-table td {
  padding: 12px;
  color: var(--snow);
  border-bottom: 1px solid var(--line-soft);
}

.data-table tbody tr { transition: background var(--dur) var(--ease); }
.data-table tbody tr:hover { background: rgba(23, 67, 160, 0.2); }

/* ---------- 11. 面包屑 / 指标 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}
.breadcrumb a { color: var(--ice); }
.breadcrumb a:hover { color: var(--neon); }

.breadcrumb__sep { color: var(--steel); opacity: 0.7; }

.kpi { display: grid; gap: 4px; }

.kpi__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1;
  letter-spacing: -0.03em;
  background: linear-gradient(92deg, var(--snow) 8%, var(--ice) 52%, var(--neon) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.kpi__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

/* ---------- 12. 图片容器 ---------- */
.frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 18% 8%, rgba(23, 67, 160, 0.58), transparent 62%),
    radial-gradient(90% 80% at 88% 92%, rgba(255, 106, 26, 0.34), transparent 62%),
    linear-gradient(180deg, var(--ink-2), var(--ink));
}

.frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(168, 203, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 203, 255, 0.09) 1px, transparent 1px);
  background-size: 32px 32px;
}

.frame__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame--wide { aspect-ratio: 21 / 9; }
.frame--tall { aspect-ratio: 3 / 4; }
.frame--square { aspect-ratio: 1 / 1; }
.frame--cut {
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

/* ---------- 13. 显现 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 200ms var(--ease), transform 200ms var(--ease);
}
html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 减弱动效 ---------- */
@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 [data-reveal] { opacity: 1 !important; transform: none !important; }
  .card:hover, .card:focus-within { transform: none; }
  .btn:hover { transform: none; }
  .chip:hover { transform: none; }
  .skip-link { transition: none; }
}