*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-deep: #0A0E17;
  --bg-secondary: #101726;
  --bg-panel: #151F2E;
  --accent-blue: #00C8FF;
  --accent-green: #39FF14;
  --accent-orange: #FF8C00;
  --text-primary: #F5F7FA;
  --text-secondary: #A0B0C0;
  --border-color: #223047;
  --success: #00E676;
  --font-display: 'Rajdhani', 'Oswald', 'Arial Black', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'Roboto Mono', 'Courier New', monospace;
  --container-w: 1200px;
  --gutter: 28px;
  --gutter-sm: 20px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, .24);
  --shadow-float: 0 8px 24px rgba(0, 0, 0, .36);
}

html {
  background: var(--bg-deep);
  scroll-padding-top: 110px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
}

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

ul, ol {
  list-style: none;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  color: var(--accent-green);
}

button {
  font: inherit;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
}

::selection {
  background: rgba(0, 200, 255, .3);
  color: var(--text-primary);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  line-height: 1.15;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: .01em;
}

p + p {
  margin-top: .85em;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter-sm);
  padding-right: var(--gutter-sm);
}

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

.main-content {
  display: block;
  min-height: 60vh;
}

.section {
  padding: 48px 0;
}

.section--tinted {
  background: var(--bg-secondary);
}

.section--deep {
  background: var(--bg-deep);
}

.section--panel {
  background: var(--bg-panel);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 10px;
}

.section-eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent-green);
  flex: none;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.section-title {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.1;
}

.section-title-mark {
  font-family: var(--font-mono);
  font-style: normal;
  font-weight: 500;
  font-size: 14px;
  color: var(--accent-orange);
  margin-left: 10px;
  vertical-align: super;
}

.section-desc {
  max-width: 60ch;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.chapter-num {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 48px;
  line-height: .9;
  color: var(--accent-orange);
  display: block;
  margin-bottom: 10px;
}

.band {
  border-left: 3px solid var(--accent-blue);
  padding: 4px 0 4px 16px;
}

.band--green {
  border-left-color: var(--accent-green);
}

.band--orange {
  border-left-color: var(--accent-orange);
}

.tick-line {
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--border-color) 0 1px, transparent 1px 16px);
  opacity: .5;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-2, .grid-3, .grid-4 {
  grid-template-columns: 1fr;
}

.card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 24px;
  height: 100%;
  transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 200, 255, .45);
  box-shadow: var(--shadow-card);
}

.card-title {
  font-size: 20px;
  margin-bottom: 10px;
}

.card-body {
  font-size: 14px;
  line-height: 1.7;
}

.card-body p + p {
  margin-top: .6em;
}

.panel-data {
  position: relative;
  background: linear-gradient(180deg, var(--bg-panel), rgba(21, 31, 46, .6));
  border: 1px solid var(--border-color);
  padding: 28px 28px 34px;
}

.panel-data::before {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  border-top: 22px solid rgba(0, 200, 255, .7);
  border-left: 22px solid transparent;
  pointer-events: none;
}

.panel-data::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 14px;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--accent-green) 0 2px, transparent 2px 7px);
  opacity: .3;
  pointer-events: none;
}

.panel-data-title {
  font-size: 18px;
  margin-bottom: 14px;
}

.data-num {
  font-family: var(--font-mono);
  font-style: normal;
  font-weight: 500;
  font-size: 42px;
  line-height: 1;
  color: var(--accent-blue);
  letter-spacing: -.02em;
  display: block;
  margin-bottom: 8px;
}

.data-num--green {
  color: var(--accent-green);
}

.data-num--orange {
  color: var(--accent-orange);
}

.data-num--sm {
  font-size: 28px;
}

.data-cap {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.spec-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  line-height: 1.4;
  white-space: nowrap;
}

.spec-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  flex: none;
}

.spec-tag--blue::before {
  background: var(--accent-blue);
}

.spec-tag--green::before {
  background: var(--accent-green);
}

.spec-tag--orange::before {
  background: var(--accent-orange);
}

.frame {
  position: relative;
  padding: 32px;
  border: 1px solid var(--border-color);
  background: transparent;
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  pointer-events: none;
  border-color: var(--accent-blue);
  border-style: solid;
}

.frame::before {
  top: -2px;
  left: -2px;
  border-width: 2px 0 0 2px;
}

.frame::after {
  bottom: -2px;
  right: -2px;
  border-width: 0 2px 2px 0;
}

.frame--inverse::before {
  top: auto;
  bottom: -2px;
  left: -2px;
  border-width: 0 0 2px 2px;
}

.frame--inverse::after {
  bottom: auto;
  top: -2px;
  right: -2px;
  border-width: 2px 2px 0 0;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-panel);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.4;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.filter-btn:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.filter-btn[aria-pressed="true"] {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: rgba(57, 255, 20, .07);
  box-shadow: inset 0 0 0 1px rgba(57, 255, 20, .2);
}

.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--bg-secondary);
  aspect-ratio: 16 / 9;
}

.media--4x3 {
  aspect-ratio: 4 / 3;
}

.media--1x1 {
  aspect-ratio: 1 / 1;
}

.media--wide {
  aspect-ratio: 21 / 9;
}

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

.media .placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-secondary);
  text-transform: uppercase;
  background:
    linear-gradient(135deg, rgba(0, 200, 255, .05) 25%, transparent 25.5%),
    linear-gradient(225deg, rgba(57, 255, 20, .04) 25%, transparent 25.5%),
    var(--bg-secondary);
  background-size: 32px 32px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color .2s ease;
}

.breadcrumb-link:hover {
  color: var(--accent-blue);
}

.breadcrumb-sep {
  color: var(--border-color);
  font-family: var(--font-mono);
  font-size: 11px;
}

.breadcrumbs [aria-current="page"] {
  color: var(--text-primary);
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: .05em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease, color .25s ease, transform .25s ease, box-shadow .25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: var(--bg-deep);
  box-shadow: 0 4px 16px rgba(0, 200, 255, .22);
}

.btn-primary:hover {
  background: rgba(0, 200, 255, .12);
  color: var(--accent-blue);
  box-shadow: 0 6px 20px rgba(0, 200, 255, .3);
}

.btn-outline {
  border-color: rgba(0, 200, 255, .55);
  color: var(--accent-blue);
}

.btn-outline:hover {
  border-color: var(--accent-blue);
  background: rgba(0, 200, 255, .08);
}

.btn--green {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: var(--bg-deep);
  box-shadow: 0 4px 16px rgba(57, 255, 20, .18);
}

.btn--green:hover {
  background: rgba(57, 255, 20, .12);
  color: var(--accent-green);
}

.btn--block {
  display: flex;
  width: 100%;
}

.text-primary {
  color: var(--text-primary);
}

.text-secondary {
  color: var(--text-secondary);
}

.text-accent {
  color: var(--accent-blue);
}

.text-accent-green {
  color: var(--accent-green);
}

.text-accent-orange {
  color: var(--accent-orange);
}

.mono {
  font-family: var(--font-mono);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .3);
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 12px;
  z-index: 1300;
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  background: var(--accent-blue);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .05em;
  text-decoration: none;
  transition: top .2s var(--ease);
}

.skip-link:focus {
  top: 8px;
  outline: none;
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--bg-secondary);
  z-index: 1100;
  pointer-events: none;
  overflow: hidden;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
  transition: width .08s linear;
}

.masthead {
  padding-top: 8px;
  padding-bottom: 6px;
  background: linear-gradient(180deg, rgba(0, 200, 255, .03), transparent 55%);
}

.masthead-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  min-height: 40px;
}

.masthead-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-secondary);
  line-height: 1;
  text-transform: uppercase;
}

.masthead-meta-left {
  justify-self: start;
}

.masthead-meta-right {
  justify-self: end;
}

.masthead-live,
.masthead-edition,
.masthead-slogan {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  white-space: nowrap;
}

.masthead-edition {
  color: var(--accent-blue);
}

.masthead-slogan {
  color: var(--text-secondary);
}

.masthead-sep {
  font-family: var(--font-mono);
  opacity: .4;
}

.live-dot {
  width: 7px;
  height: 7px;
  flex: none;
  background: var(--accent-green);
  border-radius: 50%;
  animation: livePulse 1.8s ease-in-out infinite;
  box-shadow: 0 0 8px rgba(57, 255, 20, .5);
}

@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.75); }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: none;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  -webkit-clip-path: polygon(50% 0%, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
  clip-path: polygon(50% 0%, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  text-transform: uppercase;
}

.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-word {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 21px;
  line-height: 1;
  letter-spacing: .03em;
  color: var(--text-primary);
  text-transform: uppercase;
  transition: color .2s ease;
}

.brand-cjk {
  font-family: var(--font-body);
  font-style: normal;
  font-weight: 600;
  font-size: 10px;
  letter-spacing: .34em;
  color: var(--text-secondary);
  line-height: 1.6;
  transition: color .2s ease;
}

.brand:hover .brand-word {
  color: var(--accent-blue);
}

.brand:hover .brand-cjk {
  color: var(--accent-green);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-panel);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: border-color .2s ease;
}

.nav-toggle:hover {
  border-color: var(--accent-blue);
}

.nav-toggle-ico {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 15px;
  flex: none;
}

.nav-toggle-ico-line {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform .25s var(--ease), opacity .2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-ico-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-ico-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle-text {
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .08em;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-text {
  font-size: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-text::after {
  content: "关闭";
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
}

.masthead-rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color) 20%, rgba(0, 200, 255, .55) 50%, var(--border-color) 80%, transparent);
}

.site-nav {
  display: block;
  position: relative;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.2;
  white-space: nowrap;
  transition: color .2s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 7px;
  height: 2px;
  background: transparent;
  transition: background .2s var(--ease);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  background: var(--accent-blue);
}

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

.nav-link[aria-current="page"]::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px rgba(57, 255, 20, .6);
  margin-right: 7px;
}

.nav-link[aria-current="page"]::after {
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
}

.site-footer {
  position: relative;
  background:
    radial-gradient(80% 60% at 50% 0%, rgba(0, 200, 255, .04), transparent 60%),
    linear-gradient(180deg, var(--bg-secondary), var(--bg-deep) 50%);
  border-top: 1px solid var(--border-color);
  margin-top: 80px;
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
  opacity: .7;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr 1.4fr;
  gap: 32px;
  padding-top: 48px;
  padding-bottom: 40px;
}

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

.footer-brand .brand {
  margin-bottom: 18px;
}

.footer-statement {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 34em;
  border-left: 2px solid var(--accent-blue);
  padding-left: 14px;
}

.brand--footer .brand-mark {
  width: 40px;
  height: 40px;
  font-size: 18px;
}

.brand--footer .brand-word {
  font-size: 22px;
}

.brand--footer .brand-cjk {
  color: var(--accent-blue);
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--text-secondary);
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.footer-list li,
.footer-contact li {
  margin-bottom: 10px;
}

.footer-list a {
  display: inline-block;
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-list a:hover {
  color: var(--accent-blue);
  padding-left: 4px;
}

.footer-contact {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.footer-contact li {
  margin-bottom: 12px;
}

.contact-label {
  display: inline-block;
  width: 3em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-right: 4px;
}

.footer-bar {
  border-top: 1px solid var(--border-color);
  background: rgba(10, 14, 23, .7);
  padding-top: 16px;
  padding-bottom: 16px;
}

.footer-bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-copy {
  margin: 0;
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-secondary);
  margin: 0;
}

.back-top {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 990;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  border: 1px solid rgba(0, 200, 255, .5);
  background: rgba(10, 14, 23, .88);
  backdrop-filter: blur(6px);
  color: var(--accent-blue);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .25s ease;
  box-shadow: var(--shadow-float);
}

.back-top::before {
  content: "↑";
  font-size: 15px;
  line-height: 1;
}

.back-top:hover {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: var(--bg-deep);
  transform: translateY(-2px);
}

.back-top[hidden] {
  display: none;
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--gutter);
    padding-right: var(--gutter);
  }

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

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.4fr .8fr .8fr 1.4fr;
  }
}

@media (max-width: 900px) {
  .masthead-slogan {
    display: none;
  }
}

@media (max-width: 767px) {
  .masthead {
    padding-top: 8px;
    padding-bottom: 6px;
  }

  .masthead-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    min-height: 36px;
  }

  .masthead-meta {
    display: none;
  }

  .brand {
    gap: 8px;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }

  .brand-word {
    font-size: 18px;
  }

  .brand-cjk {
    font-size: 9px;
    letter-spacing: .22em;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
  }

  .site-nav[data-open] {
    display: block;
    animation: navDrop .28s var(--ease) both;
  }

  @keyframes navDrop {
    from {
      opacity: 0;
      transform: translateY(-8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 14px;
  }

  .nav-item {
    border-bottom: 1px solid var(--border-color);
  }

  .nav-item:last-child {
    border-bottom: 0;
  }

  .nav-link {
    display: flex;
    align-items: center;
    padding: 13px 0;
    white-space: normal;
  }

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

  .nav-link[aria-current="page"]::before {
    width: 6px;
    height: 6px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 36px;
    padding-bottom: 28px;
  }

  .footer-bar-inner {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }

  .back-top {
    right: 14px;
    bottom: 14px;
    padding: 10px 14px;
    font-size: 0;
  }

  .back-top::before {
    font-size: 16px;
  }

  .section {
    padding: 36px 0;
  }
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue);
}

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

  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: .01ms !important;
  }

  .live-dot {
    animation: none !important;
    box-shadow: 0 0 4px rgba(57, 255, 20, .4);
  }
}