*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --c-void: #06110D;
  --c-deep: #0C241D;
  --c-venue: #17463A;
  --c-neon: #35E3B0;
  --c-mint: #9FF5D6;
  --c-amber: #F5A623;
  --c-coral: #FF7A5C;
  --c-fog: #E9F1EC;
  --c-slate: #8FA39B;
  --c-white: #F4FAF7;

  --line-soft: rgba(159, 245, 214, .16);
  --line-mid: rgba(159, 245, 214, .30);
  --ink-body: rgba(244, 250, 247, .80);
  --ink-dim: rgba(244, 250, 247, .56);

  --f-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", system-ui, sans-serif;
  --f-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", system-ui, -apple-system, sans-serif;
  --f-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", system-ui, -apple-system, sans-serif;
  --f-mono: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --maxw: 1320px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 2px;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --shadow-island: 0 20px 44px -30px #000;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--c-void);
  color: var(--c-white);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-family: var(--f-head);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
}

p {
  margin: 0 0 1em;
  max-width: 72ch;
}

ul, ol {
  padding-left: 1.15em;
}

a {
  color: var(--c-neon);
  text-underline-offset: 3px;
}

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

strong {
  font-weight: 700;
  color: var(--c-white);
}

::selection {
  background: var(--c-neon);
  color: #04120E;
}

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

.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;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 10px 18px;
  font-family: var(--f-head);
  font-size: 14px;
  font-weight: 700;
  color: #04120E;
  background: var(--c-neon);
  border-radius: var(--radius);
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform .22s var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------------------------------------------- 通用排版与容器 */

.display {
  font-family: var(--f-display);
  font-weight: 900;
  font-stretch: condensed;
  line-height: .92;
  letter-spacing: .02em;
  text-transform: uppercase;
  margin: 0;
}

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

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

.rule {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--line-soft);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-neon);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line-soft);
}

.section-head__kicker {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-amber);
}

.section-head__title {
  margin: 0;
  font-size: clamp(1.4rem, 2.4vw, 2.4rem);
  font-weight: 800;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--c-slate);
}

.breadcrumb__link {
  color: var(--c-slate);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.breadcrumb__link:hover {
  color: var(--c-mint);
}

.breadcrumb__sep {
  color: rgba(143, 163, 155, .46);
}

.breadcrumb__current {
  color: var(--c-mint);
}

.prose {
  max-width: 72ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-body);
}

.prose h2,
.prose h3 {
  color: var(--c-white);
  margin-top: 1.8em;
}

.prose a {
  color: var(--c-mint);
}

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
}

.surface-fog {
  background: var(--c-fog);
  color: #0C241D;
}

.surface-fog h1,
.surface-fog h2,
.surface-fog h3,
.surface-fog strong {
  color: #0C241D;
}

.surface-fog .prose {
  color: #16302A;
}

.surface-fog .rule {
  background: rgba(12, 36, 29, .16);
}

.surface-fog .section-head {
  border-bottom-color: rgba(12, 36, 29, .18);
}

/* ---------------------------------------------- 按钮 */

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--c-white);
  --btn-bd: var(--line-mid);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--f-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  --btn-bg: var(--c-neon);
  --btn-fg: #04120E;
  --btn-bd: var(--c-neon);
}

.btn--primary:hover {
  --btn-bg: var(--c-mint);
  --btn-bd: var(--c-mint);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--c-mint);
  --btn-bd: var(--line-mid);
}

.btn--ghost:hover {
  --btn-bg: rgba(53, 227, 176, .10);
  --btn-bd: var(--c-neon);
}

.btn--amber {
  --btn-bg: var(--c-amber);
  --btn-fg: #1E1200;
  --btn-bd: var(--c-amber);
}

.btn--amber:hover {
  --btn-bg: #FFC158;
  --btn-bd: #FFC158;
}

.btn--sm {
  padding: 8px 15px;
  font-size: 12.5px;
  letter-spacing: .02em;
  border-radius: 999px;
}

/* ---------------------------------------------- 标签 */

.chip,
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .05em;
  line-height: 1.5;
  border: 1px solid var(--line-mid);
  border-radius: var(--radius);
  white-space: nowrap;
}

.chip--mint,
.tag {
  color: var(--c-mint);
  background: rgba(53, 227, 176, .10);
  border-color: rgba(53, 227, 176, .32);
}

.chip--amber,
.tag--live {
  color: var(--c-amber);
  background: rgba(245, 166, 35, .10);
  border-color: rgba(245, 166, 35, .34);
}

.chip--coral,
.tag--injury {
  color: var(--c-coral);
  background: rgba(255, 122, 92, .10);
  border-color: rgba(255, 122, 92, .34);
}

/* ---------------------------------------------- 卡片 */

.card {
  position: relative;
  display: block;
  padding: 20px 20px 22px;
  background: rgba(12, 36, 29, .70);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: inherit;
  text-decoration: none;
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(53, 227, 176, .50);
  background: rgba(23, 70, 58, .62);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .10em;
  color: var(--c-slate);
}

.card__title {
  margin: 10px 0 8px;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
}

.card__body {
  margin: 0;
  max-width: none;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
}

/* ---------------------------------------------- 章节索引 */

.index-nav {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.index-nav__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  background: var(--c-void);
  color: rgba(244, 250, 247, .70);
  font-size: 13.5px;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.index-nav__link:hover {
  background: rgba(23, 70, 58, .72);
  color: var(--c-mint);
}

.index-nav__link[aria-current="true"] {
  background: var(--c-neon);
  color: #04120E;
  font-weight: 700;
}

.index-nav__num {
  font-family: var(--f-mono);
  font-size: 11px;
  opacity: .72;
  flex: none;
}

/* ---------------------------------------------- 图片容器 */

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(140deg, rgba(23, 70, 58, .92), rgba(6, 17, 13, .96));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.media-frame > img,
.media-frame > picture,
.media-frame > svg,
.media-frame > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

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

.media-frame img {
  filter: saturate(.74) contrast(1.06) brightness(.94);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(53, 227, 176, .13) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(53, 227, 176, .09) 0 1px, transparent 1px 96px),
    linear-gradient(180deg, transparent 52%, rgba(6, 17, 13, .62));
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }

/* ---------------------------------------------- 页头 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px var(--gutter) 0;
  transition: padding-top .28s var(--ease);
}

.site-header[data-compact="true"] {
  padding-top: 8px;
}

.header-rail {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  padding: 7px 15px 7px 9px;
  background: var(--c-deep);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--c-white);
  text-decoration: none;
  box-shadow: var(--shadow-island);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.brand:hover {
  border-color: rgba(53, 227, 176, .50);
  background: #0E2A22;
}

.brand__mark {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  background: var(--c-void);
  border: 1px solid rgba(159, 245, 214, .55);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 6px;
  background: var(--c-neon);
  box-shadow: 0 0 10px rgba(53, 227, 176, .70);
}

.brand__mark::after {
  content: "";
  position: absolute;
  right: -3px;
  bottom: -3px;
  width: 7px;
  height: 7px;
  background: var(--c-amber);
}

.brand__text {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
}

.brand__name {
  font-family: var(--f-head);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--c-white);
  line-height: 1.2;
}

.brand__latin {
  font-family: var(--f-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-slate);
}

.brand__line {
  position: relative;
  margin-left: 10px;
  padding-left: 11px;
  font-size: 11.5px;
  letter-spacing: .05em;
  color: rgba(159, 245, 214, .62);
  white-space: nowrap;
  transition: opacity .2s var(--ease);
}

.brand__line::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 11px;
  background: var(--line-mid);
  transform: translateY(-50%);
}

.site-nav {
  margin-inline: auto;
  padding: 5px;
  background: rgba(12, 36, 29, .84);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  box-shadow: var(--shadow-island);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item {
  display: block;
}

.nav-link {
  display: block;
  padding: 8px 13px;
  font-family: var(--f-head);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  line-height: 1.4;
  color: rgba(244, 250, 247, .72);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  white-space: nowrap;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.nav-link:hover {
  color: var(--c-mint);
  background: rgba(53, 227, 176, .10);
}

.nav-link[aria-current="page"] {
  color: var(--c-neon);
  background: rgba(53, 227, 176, .14);
  border-color: rgba(53, 227, 176, .48);
  font-weight: 700;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
  padding: 4px 5px 4px 13px;
  background: rgba(12, 36, 29, .84);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  box-shadow: var(--shadow-island);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.runstate {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.runstate__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: runPulse 2.8s ease-in-out infinite;
}

.runstate__dot--schedule {
  background: var(--c-neon);
  box-shadow: 0 0 0 3px rgba(53, 227, 176, .14);
}

.runstate__dot--injury {
  background: var(--c-amber);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, .14);
  animation-delay: .9s;
}

.runstate__label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--c-slate);
  white-space: nowrap;
}

.header-cta {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  position: relative;
  flex: none;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  cursor: pointer;
}

.nav-toggle:hover {
  border-color: var(--c-neon);
}

.nav-toggle__bar {
  position: absolute;
  left: 50%;
  width: 15px;
  height: 1.5px;
  background: var(--c-mint);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: transform .24s var(--ease), opacity .18s var(--ease);
}

.nav-toggle__bar:nth-child(1) { top: 12px; }
.nav-toggle__bar:nth-child(2) { top: 18px; }
.nav-toggle__bar:nth-child(3) { top: 24px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translate(-50%, 6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translate(-50%, -6px) rotate(-45deg);
}

@keyframes runPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .42; }
}

/* ---------------------------------------------- 滚动进度 */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  width: 100%;
  height: 2px;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--c-neon), var(--c-amber));
}

/* ---------------------------------------------- 页脚 */

.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  padding: clamp(46px, 7vw, 86px) var(--gutter) 0;
  background: var(--c-void);
  border-top: 1px solid var(--line-soft);
  overflow: hidden;
  color: var(--ink-body);
}

.footer-glow {
  position: absolute;
  left: 50%;
  bottom: -46%;
  width: min(920px, 130%);
  height: 400px;
  transform: translateX(-50%);
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(53, 227, 176, .16), rgba(53, 227, 176, 0));
}

.footer-grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(53, 227, 176, .07) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(53, 227, 176, .05) 0 1px, transparent 1px 64px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}

.footer-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(28px, 4vw, 60px);
}

.footer-brand {
  min-width: 0;
}

.footer-statement {
  margin: 20px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-dim);
}

.footer-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.footer-nav__group {
  min-width: 0;
}

.footer-heading {
  margin: 0 0 16px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--f-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--c-slate);
  text-transform: uppercase;
}

.footer-nav__list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-nav__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  color: rgba(244, 250, 247, .74);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.footer-nav__list a::before {
  content: "";
  flex: none;
  width: 4px;
  height: 4px;
  background: rgba(53, 227, 176, .40);
  transition: background .18s var(--ease), transform .18s var(--ease);
}

.footer-nav__list a:hover {
  color: var(--c-neon);
}

.footer-nav__list a:hover::before {
  background: var(--c-neon);
  transform: scale(1.5);
}

.footer-contact {
  min-width: 0;
}

.contact-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.contact-list__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 6px 12px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(159, 245, 214, .14);
}

.contact-list__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.contact-list__key {
  margin: 0;
  padding-top: 3px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--c-slate);
}

.contact-list__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-body);
}

.contact-list__value {
  display: inline;
  word-break: break-word;
}

.contact-list__note {
  margin: 14px 0 0;
  max-width: 36ch;
  font-size: 12px;
  line-height: 1.75;
  color: var(--c-slate);
}

.copy-btn {
  margin-left: 8px;
  padding: 3px 9px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .06em;
  color: var(--c-mint);
  background: rgba(53, 227, 176, .08);
  border: 1px solid rgba(159, 245, 214, .28);
  border-radius: var(--radius);
  cursor: pointer;
  vertical-align: 1px;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.copy-btn:hover {
  background: rgba(53, 227, 176, .18);
  border-color: var(--c-neon);
}

.copy-btn[data-copied="true"] {
  color: #04120E;
  background: var(--c-neon);
  border-color: var(--c-neon);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  margin-top: clamp(36px, 5vw, 66px);
  padding: 20px 0 26px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--c-slate);
}

.footer-credit {
  margin: 0;
  max-width: none;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-legal a {
  color: var(--c-slate);
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.footer-legal a:hover {
  color: var(--c-mint);
  border-bottom-color: rgba(159, 245, 214, .48);
}

.footer-icp {
  margin: 0 0 0 auto;
  max-width: none;
}

/* ---------------------------------------------- 返回顶部 */

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .10em;
  color: var(--c-mint);
  background: rgba(12, 36, 29, .94);
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease), border-color .18s var(--ease);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.to-top:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}

.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top__arrow {
  font-size: 13px;
  line-height: 1;
}

.to-top__text {
  white-space: nowrap;
}

/* ---------------------------------------------- 响应式 */

@media (max-width: 1240px) {
  .brand__line {
    display: none;
  }
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    margin-inline: 0;
    padding: 10px;
    border-radius: 8px;
    background: var(--c-deep);
    border: 1px solid rgba(159, 245, 214, .22);
    box-shadow: 0 34px 64px -34px #000;
    display: none;
    z-index: 20;
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    padding: 12px 14px;
    border-radius: 3px;
    font-size: 15px;
  }

  .nav-link[aria-current="page"] {
    border-radius: 3px;
  }

  .header-tools {
    margin-left: auto;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  .span-3,
  .span-4,
  .span-6,
  .span-8,
  .span-9 {
    grid-column: span 12;
  }
}

@media (max-width: 720px) {
  .site-header {
    padding-top: 10px;
  }

  .header-rail {
    gap: 8px;
  }

  .header-tools {
    padding-left: 8px;
    gap: 8px;
  }

  .runstate {
    display: none;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .contact-list__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .contact-list__key {
    padding-top: 0;
  }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .footer-icp {
    margin-left: 0;
  }
}

@media (max-width: 560px) {
  .brand__latin {
    display: none;
  }

  .header-cta {
    display: none;
  }

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

  .to-top {
    padding: 9px 13px;
  }

  .to-top__text {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  .card:hover,
  .to-top {
    transform: none;
  }

  .runstate__dot {
    animation: none;
  }
}