:root {
  color-scheme: dark;
  --void: #08070D;
  --graphite: #15121D;
  --glass: #241E33;
  --violet: #8B5CFF;
  --violet-deep: #4B22A8;
  --cyan: #3CF2DE;
  --amber: #FFD34D;
  --steel: #8D93A3;
  --fog: #F4F1FA;
  --coral: #FF6B7A;
  --line: rgba(141, 147, 163, 0.22);
  --line-strong: rgba(139, 92, 255, 0.42);
  --on-accent: #0B0713;
  --shell-max: 1280px;
  --gutter: clamp(20px, 4vw, 64px);
  --font-display: "HarmonyOS Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "HarmonyOS Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --h-arena: 40px;
  --h-brand: 72px;
  --h-nav: 56px;
}

*,
*::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 {
  margin: 0;
}

ul[class],
ol[class] {
  list-style: none;
  padding: 0;
}

img,
svg,
video {
  max-width: 100%;
  display: block;
}

button {
  font: inherit;
  color: inherit;
}

a { color: inherit; }

body {
  min-height: 100vh;
  background-color: var(--void);
  background-image:
    radial-gradient(920px 540px at 84% -10%, rgba(139, 92, 255, 0.20), transparent 62%),
    radial-gradient(680px 420px at 2% 6%, rgba(60, 242, 222, 0.09), transparent 68%),
    linear-gradient(rgba(141, 147, 163, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141, 147, 163, 0.05) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  background-repeat: no-repeat, no-repeat, repeat, repeat;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { display: block; }

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

:target {
  scroll-margin-top: clamp(150px, 18vw, 200px);
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

.container {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- skip link ---------- */

.skip-link {
  position: fixed;
  top: -80px;
  left: 12px;
  z-index: 200;
  padding: 11px 18px;
  background: var(--violet);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-decoration: none;
  transition: top 0.14s var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* ---------- header shell ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(8, 7, 13, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

/* 赛区窄带 */

.arena-bar {
  height: var(--h-arena);
  background: linear-gradient(90deg, rgba(75, 34, 168, 0.5) 0%, rgba(36, 30, 51, 0.28) 42%, rgba(8, 7, 13, 0.7) 100%);
  border-bottom: 1px solid rgba(139, 92, 255, 0.22);
}

.arena-bar__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 100%;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.arena-bar__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--steel);
}

.arena-bar__options {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.arena-bar__options::-webkit-scrollbar { display: none; }

.chip {
  flex: 0 0 auto;
  padding: 4px 11px;
  border: 1px solid rgba(141, 147, 163, 0.26);
  border-radius: 1px;
  background: rgba(8, 7, 13, 0.4);
  color: rgba(244, 241, 250, 0.62);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  line-height: 1.5;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.14s var(--ease), color 0.14s var(--ease), border-color 0.14s var(--ease);
}

.chip:hover {
  color: var(--fog);
  border-color: rgba(139, 92, 255, 0.7);
  background: rgba(139, 92, 255, 0.16);
}

.chip[aria-pressed="true"] {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--on-accent);
  font-weight: 600;
}

.arena-bar__note {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(141, 147, 163, 0.9);
  white-space: nowrap;
}

/* 品牌说明层 */

.brand-deck {
  background: linear-gradient(180deg, rgba(21, 18, 29, 0.72), rgba(8, 7, 13, 0.96));
  border-bottom: 1px solid var(--line);
}

.brand-deck__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 36px);
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 10px var(--gutter);
  min-height: var(--h-brand);
}

.brand-deck__mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--fog);
}

.brand-deck__glyph {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--violet);
  background: rgba(139, 92, 255, 0.12);
  color: var(--violet);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  transition: background 0.14s var(--ease), color 0.14s var(--ease);
}

.brand-deck__mark:hover .brand-deck__glyph {
  background: var(--violet);
  color: var(--on-accent);
}

.brand-deck__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.2;
}

.brand-deck__line {
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--steel);
  padding-left: clamp(14px, 2.6vw, 36px);
  border-left: 1px solid var(--line);
  line-height: 1.6;
}

.brand-deck__utility {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.util-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: rgba(36, 30, 51, 0.5);
  color: rgba(244, 241, 250, 0.86);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.14s var(--ease), border-color 0.14s var(--ease), background 0.14s var(--ease);
}

.util-link:hover {
  color: var(--violet);
  border-color: var(--line-strong);
  background: rgba(139, 92, 255, 0.14);
}

.util-link--accent {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--on-accent);
  font-weight: 600;
}

.util-link--accent:hover {
  background: #9E77FF;
  border-color: #9E77FF;
  color: var(--on-accent);
}

/* 栏目层 */

.nav-deck {
  background: rgba(21, 18, 29, 0.66);
  border-bottom: 1px solid var(--line);
}

.nav-deck__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: var(--h-nav);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1.4vw, 18px);
  flex-wrap: wrap;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 8px 10px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: rgba(244, 241, 250, 0.7);
  text-decoration: none;
  transition: color 0.14s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 2px;
  height: 2px;
  background: var(--violet);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.16s var(--ease), background 0.16s var(--ease);
}

.nav-link:hover { color: var(--fog); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] {
  color: var(--fog);
  font-weight: 700;
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--cyan);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: rgba(36, 30, 51, 0.6);
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.14s var(--ease), color 0.14s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--line-strong);
  color: var(--violet);
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform 0.16s var(--ease), opacity 0.16s var(--ease);
}

.site-header[data-open] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.site-header[data-open] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.nav-toggle__text { white-space: nowrap; }

/* ---------- footer ---------- */

.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  background: linear-gradient(180deg, #0B0913 0%, #08070D 46%, #06050A 100%);
  border-top: 1px solid rgba(139, 92, 255, 0.24);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(700px 340px at 86% 0%, rgba(139, 92, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.footer-band {
  height: 4px;
  background: linear-gradient(90deg, var(--violet-deep) 0%, var(--violet) 34%, var(--cyan) 62%, rgba(8, 7, 13, 0) 94%);
}

.footer-poster {
  position: relative;
  padding-block: clamp(36px, 5.6vw, 68px) clamp(24px, 3.6vw, 40px);
  border-bottom: 1px solid var(--line);
}

.footer-poster__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(141, 147, 163, 0.9);
}

.footer-poster__word {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(54px, 11vw, 136px);
  font-weight: 700;
  line-height: 0.86;
  letter-spacing: 0.04em;
  color: rgba(139, 92, 255, 0.1);
  -webkit-text-stroke: 1px rgba(139, 92, 255, 0.52);
  user-select: none;
}

.footer-poster__summary {
  max-width: 58ch;
  margin-top: clamp(16px, 2.4vw, 24px);
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 241, 250, 0.7);
}

.footer-poster__cta {
  margin-top: clamp(18px, 2.6vw, 26px);
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 40px);
  padding-block: clamp(30px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
}

.footer-col__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--violet);
}

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

.footer-link {
  display: inline-block;
  font-size: 13.5px;
  letter-spacing: 0.03em;
  color: rgba(244, 241, 250, 0.72);
  text-decoration: none;
  transition: color 0.14s var(--ease), padding-left 0.14s var(--ease);
}

.footer-link:hover {
  color: var(--cyan);
  padding-left: 4px;
}

.footer-contact {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(18px, 2.6vw, 34px);
  padding-block: clamp(24px, 3.2vw, 40px);
  border-bottom: 1px solid var(--line);
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding-left: 14px;
  border-left: 1px solid rgba(139, 92, 255, 0.34);
}

.footer-contact__item--wide {
  grid-column: span 1;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel);
}

.footer-contact__value {
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--fog);
  word-break: break-word;
}

.footer-contact__note {
  max-width: 46ch;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(141, 147, 163, 0.92);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  background: rgba(36, 30, 51, 0.7);
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.4;
  cursor: pointer;
  transition: color 0.14s var(--ease), border-color 0.14s var(--ease), background 0.14s var(--ease);
}

.copy-btn:hover {
  color: var(--cyan);
  border-color: rgba(60, 242, 222, 0.5);
}

.copy-btn[data-copied] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(60, 242, 222, 0.14);
}

.copy-btn__label { pointer-events: none; }

.footer-meta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  padding-block: 22px 38px;
  font-size: 12px;
  color: rgba(141, 147, 163, 0.92);
}

.footer-meta__icp {
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
}

.footer-meta__copyright {
  letter-spacing: 0.05em;
}

/* ---------- 通用排版 ---------- */

.section {
  padding-block: clamp(34px, 5.4vw, 76px);
}

.section--tight {
  padding-block: clamp(22px, 3vw, 44px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 24px;
  margin-bottom: clamp(20px, 3vw, 34px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--violet);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background: currentColor;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.04em;
  color: var(--fog);
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: 1px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.14s var(--ease), color 0.14s var(--ease), border-color 0.14s var(--ease);
}

.btn--primary {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--on-accent);
  box-shadow: 0 0 0 1px rgba(139, 92, 255, 0.35), 0 14px 34px -20px rgba(139, 92, 255, 0.95);
}

.btn--primary:hover {
  background: #9E77FF;
  border-color: #9E77FF;
}

.btn--ghost {
  background: rgba(36, 30, 51, 0.4);
  border-color: var(--line-strong);
  color: var(--fog);
}

.btn--ghost:hover {
  border-color: var(--violet);
  background: rgba(139, 92, 255, 0.16);
  color: #C6B4FF;
}

.btn--quiet {
  background: var(--graphite);
  border-color: var(--line);
  color: rgba(244, 241, 250, 0.84);
}

.btn--quiet:hover {
  border-color: rgba(60, 242, 222, 0.5);
  color: var(--cyan);
}

/* ---------- 面包屑 ---------- */

.breadcrumbs {
  padding-block: 16px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs__link {
  color: rgba(244, 241, 250, 0.68);
  text-decoration: none;
  transition: color 0.14s var(--ease);
}

.breadcrumbs__link:hover { color: var(--cyan); }

.breadcrumbs__sep {
  color: rgba(141, 147, 163, 0.46);
}

.breadcrumbs [aria-current="page"] {
  color: var(--fog);
}

/* ---------- 长文 ---------- */

.prose {
  max-width: 74ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 250, 0.8);
}

.prose h2 {
  margin: 1.9em 0 0.6em;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--fog);
}

.prose h3 {
  margin: 1.6em 0 0.5em;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--fog);
}

.prose p { margin: 0 0 1.1em; }

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
}

.prose li { margin-bottom: 0.42em; }

.prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(60, 242, 222, 0.42);
}

.prose a:hover { border-bottom-color: var(--cyan); }

.prose strong { color: var(--fog); }

.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--amber);
}

/* ---------- 栅格 ---------- */

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fill, minmax(258px, 1fr)); }
.grid--aside { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }

/* ---------- 档案卡 ---------- */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.2vw, 26px);
  background: linear-gradient(165deg, rgba(36, 30, 51, 0.86), rgba(21, 18, 29, 0.97));
  border: 1px solid var(--line);
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.card:hover {
  border-color: var(--line-strong);
  background: linear-gradient(165deg, rgba(46, 36, 70, 0.92), rgba(24, 20, 34, 0.98));
}

.card--slant {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  padding-bottom: calc(clamp(18px, 2.2vw, 26px) + 10px);
}

.card__index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--violet);
}

.card__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: 0.03em;
  color: var(--fog);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ---------- 状态标签 ---------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  background: rgba(36, 30, 51, 0.72);
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  line-height: 1.5;
  text-transform: uppercase;
  white-space: nowrap;
}

.tag--live {
  color: var(--cyan);
  border-color: rgba(60, 242, 222, 0.42);
  background: rgba(60, 242, 222, 0.1);
}

.tag--time {
  color: var(--amber);
  border-color: rgba(255, 211, 77, 0.4);
  background: rgba(255, 211, 77, 0.09);
}

.tag--alert {
  color: var(--coral);
  border-color: rgba(255, 107, 122, 0.44);
  background: rgba(255, 107, 122, 0.1);
}

/* ---------- 图片容器 ---------- */

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background:
    linear-gradient(150deg, #1C1731 0%, #0C0A13 74%),
    linear-gradient(rgba(141, 147, 163, 0.08) 1px, transparent 1px);
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame__time {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 8px;
  border: 1px solid rgba(255, 211, 77, 0.34);
  background: rgba(8, 7, 13, 0.84);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 14px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(244, 241, 250, 0.84);
  background: linear-gradient(180deg, rgba(8, 7, 13, 0) 0%, rgba(8, 7, 13, 0.92) 78%);
}

/* ---------- 数据数字 ---------- */

.data-figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.data-figure__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--fog);
  font-variant-numeric: tabular-nums;
}

.data-figure__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ---------- 筛选 ---------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.filter-btn {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 1px;
  background: rgba(21, 18, 29, 0.8);
  color: rgba(244, 241, 250, 0.66);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1.4;
  cursor: pointer;
  transition: color 0.14s var(--ease), border-color 0.14s var(--ease), background 0.14s var(--ease);
}

.filter-btn:hover {
  color: var(--fog);
  border-color: var(--line-strong);
}

.filter-btn[aria-pressed="true"] {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--on-accent);
  font-weight: 600;
}

.filter-empty {
  padding: 22px 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

/* ---------- 桌面端滚动收拢 ---------- */

@media (min-width: 901px) {
  .brand-deck {
    max-height: 120px;
    overflow: hidden;
    transition: max-height 0.2s var(--ease), opacity 0.16s var(--ease);
  }

  .site-header[data-scrolled] .brand-deck {
    max-height: 0;
    opacity: 0;
    border-bottom-color: transparent;
  }

  .site-header[data-scrolled] .nav-deck {
    background: rgba(8, 7, 13, 0.96);
    box-shadow: 0 14px 30px -26px rgba(0, 0, 0, 0.9);
  }
}

/* ---------- 平板 ---------- */

@media (max-width: 1100px) {
  .arena-bar__note { display: none; }
  .brand-deck__line {
    padding-left: 16px;
    letter-spacing: 0.12em;
  }
  .grid--aside { grid-template-columns: minmax(0, 6fr) minmax(0, 4fr); }
}

@media (max-width: 980px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 移动端导航 ---------- */

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
    order: 1;
  }

  .nav-deck__inner {
    flex-wrap: wrap;
    justify-content: flex-end;
    padding-block: 10px;
    gap: 0;
  }

  .primary-nav {
    order: 2;
    flex: 0 0 100%;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.18s var(--ease);
  }

  .site-header[data-open] .primary-nav {
    max-height: 460px;
  }

  .nav-link {
    padding: 14px 4px;
    border-top: 1px solid var(--line);
    font-size: 15px;
    letter-spacing: 0.08em;
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    color: var(--cyan);
  }

  .brand-deck__inner {
    gap: 12px;
    padding-block: 10px;
    min-height: 60px;
  }

  .brand-deck__line { display: none; }

  .brand-deck__name {
    font-size: 16px;
    letter-spacing: 0.12em;
  }

  .brand-deck__utility { gap: 6px; }

  .util-link {
    padding: 7px 11px;
    font-size: 11px;
    letter-spacing: 0.06em;
  }

  .grid--2,
  .grid--3,
  .grid--aside { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-contact__item--wide { grid-column: 1 / -1; }
}

/* ---------- 手机 ---------- */

@media (max-width: 600px) {
  :root {
    --h-arena: 38px;
    --h-nav: 52px;
  }

  .arena-bar__inner { gap: 10px; }

  .arena-bar__label { letter-spacing: 0.18em; }

  .chip {
    font-size: 11px;
    padding: 3px 9px;
  }

  .brand-deck__glyph {
    width: 28px;
    height: 28px;
    font-size: 10px;
  }

  .brand-deck__name { font-size: 14px; }

  .util-link {
    padding: 6px 9px;
    font-size: 10.5px;
  }

  .footer-poster__word {
    font-size: clamp(46px, 16vw, 76px);
    -webkit-text-stroke-width: 0.8px;
  }

  .footer-grid { grid-template-columns: 1fr; }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .card { padding: 16px; }
}

/* ---------- 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;
    scroll-behavior: auto !important;
  }

  .card:hover,
  .footer-link:hover { transform: none; padding-left: 0; }
}