:root {
  --bg-main: #0B0E1F;
  --bg-surface: #141A30;
  --bg-sub: #1C2440;
  --accent: #FF6C0A;
  --accent-purple: #A950FF;
  --text-main: #F5F6FA;
  --text-dim: #B0B6CE;
  --border: #2A3456;
  --success: #00D68F;
  --warning: #FFC107;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --content-w: 1200px;
  --header-h: 76px;
  --radius: 4px;
  --ease-out: cubic-bezier(.22, .61, .36, 1);
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4.5rem;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-main);
  min-width: 320px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: break-word;
  -webkit-tap-highlight-color: transparent;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1.2px 1.2px at 18% 22%, rgba(245,246,250,.7), transparent 100%),
    radial-gradient(1px 1px at 42% 12%, rgba(176,182,206,.6), transparent 100%),
    radial-gradient(1.4px 1.4px at 72% 28%, rgba(245,246,250,.55), transparent 100%),
    radial-gradient(1px 1px at 92% 64%, rgba(169,80,255,.5), transparent 100%),
    radial-gradient(1.2px 1.2px at 28% 84%, rgba(255,108,10,.4), transparent 100%),
    radial-gradient(1px 1px at 58% 92%, rgba(176,182,206,.45), transparent 100%),
    radial-gradient(80rem 52rem at 100% 0%, rgba(169,80,255,.07), transparent 60%),
    radial-gradient(50rem 40rem at 0% 100%, rgba(255,108,10,.06), transparent 55%),
    var(--bg-main);
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: var(--accent-purple);
  text-decoration: none;
  transition: color .2s var(--ease-out), background-color .2s var(--ease-out), border-color .2s var(--ease-out), padding-left .2s var(--ease-out), transform .2s var(--ease-out);
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

::selection {
  background: var(--accent);
  color: var(--bg-main);
}

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

#main-content {
  scroll-margin-top: calc(var(--header-h) + var(--space-4));
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--text-main);
  line-height: 1.25;
}

h1 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.01em;
  margin: 0 0 var(--space-4);
}

h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  font-weight: 800;
  margin: var(--space-8) 0 var(--space-4);
}

h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin: var(--space-5) 0 var(--space-3);
}

p {
  margin-bottom: var(--space-4);
}

.container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

.content-main {
  min-height: 60vh;
  padding-bottom: var(--space-10);
}

.section-block {
  padding: var(--space-8) 0;
}

.section-band {
  padding: var(--space-8) 0;
  margin: var(--space-6) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(20, 26, 48, .5), var(--bg-surface));
}

.section-band-dark {
  background: #070918;
}

.section-band-accent {
  background: linear-gradient(135deg, rgba(255, 108, 10, .08), rgba(169, 80, 255, .05));
}

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

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

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

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

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 300;
  padding: .65rem 1.15rem;
  background: var(--accent);
  color: var(--bg-main);
  font-weight: 800;
  font-size: .85rem;
  letter-spacing: .05em;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  transform: translateY(calc(-100% - var(--space-3)));
  transition: transform .25s var(--ease-out);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 14, 31, .86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--border) 28%, var(--border) 72%, var(--accent-purple) 100%);
  opacity: .8;
  pointer-events: none;
}

.header-inner {
  max-width: var(--content-w);
  margin: 0 auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0 var(--space-5);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: .04em;
  line-height: 1;
}

.brand-link:hover {
  color: var(--text-main);
}

.brand-mark {
  position: relative;
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-purple) 100%);
  clip-path: polygon(50% 0%, 60% 34%, 96% 26%, 74% 56%, 100% 82%, 62% 74%, 50% 100%, 36% 72%, 4% 82%, 25% 54%, 0% 26%, 38% 34%);
}

.brand-name {
  white-space: nowrap;
}

.header-main {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: .3rem;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: .55rem .75rem;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color .2s var(--ease-out), background-color .2s var(--ease-out);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: .75rem;
  right: .75rem;
  bottom: .2rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s var(--ease-out);
}

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

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

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

.header-cta {
  margin-left: var(--space-2);
  font-size: .92rem;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border);
  background: var(--bg-sub);
  transition: border-color .2s var(--ease-out), background-color .2s var(--ease-out);
}

.nav-toggle:hover {
  border-color: var(--accent-purple);
  background: var(--bg-surface);
}

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  background: var(--text-main);
  transition: transform .25s var(--ease-out), opacity .2s var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) 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: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  z-index: 1;
  background: #070918;
  margin-top: var(--space-10);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-purple) 55%, var(--border) 100%);
  opacity: .85;
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 340px;
  height: 220px;
  pointer-events: none;
  background:
    radial-gradient(2px 2px at 20% 50%, rgba(255, 108, 10, .5), transparent 100%),
    radial-gradient(1.5px 1.5px at 35% 22%, rgba(255, 255, 255, .35), transparent 100%),
    radial-gradient(1px 1px at 52% 68%, rgba(169, 80, 255, .6), transparent 100%),
    radial-gradient(2px 2px at 70% 32%, rgba(255, 255, 255, .3), transparent 100%),
    radial-gradient(1px 1px at 82% 55%, rgba(255, 108, 10, .35), transparent 100%),
    radial-gradient(1.2px 1.2px at 92% 18%, rgba(255, 255, 255, .4), transparent 100%);
}

.footer-inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-w);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-6);
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: var(--space-8);
}

.footer-brand-block .brand-link {
  margin-bottom: var(--space-3);
}

.footer-brand-block .brand-mark {
  width: 22px;
  height: 22px;
}

.footer-about {
  color: var(--text-dim);
  font-size: .95rem;
  line-height: 1.8;
  max-width: 30em;
}

.footer-heading {
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--text-dim);
  margin: 0 0 var(--space-3);
  padding-bottom: .55rem;
  position: relative;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--accent-purple);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: .7rem;
}

.footer-links a {
  color: var(--text-dim);
  font-size: .94rem;
  position: relative;
  padding-left: var(--space-3);
}

.footer-links a::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  opacity: 0;
  transition: opacity .2s var(--ease-out);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: var(--space-4);
}

.footer-links a:hover::before {
  opacity: 1;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  color: var(--text-dim);
  font-size: .9rem;
}

.footer-contact p {
  display: flex;
  gap: var(--space-2);
  align-items: baseline;
  margin: 0;
}

.footer-contact p::before {
  content: "✦";
  color: var(--accent-purple);
  font-size: .8em;
}

.footer-meta {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  color: var(--text-dim);
  font-size: .85rem;
}

[data-year] {
  font-weight: 700;
  color: var(--text-main);
}

.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .6rem 1.25rem;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.4;
  border: 1px solid transparent;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background-color .2s var(--ease-out), color .2s var(--ease-out), border-color .2s var(--ease-out), transform .15s var(--ease-out);
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(115deg, transparent 40%, rgba(255, 255, 255, .35) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform .55s var(--ease-out);
  pointer-events: none;
}

.btn:hover::after {
  transform: translateX(100%);
}

.btn:active {
  transform: translateY(1px) scale(.98);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-main);
}

.btn-primary:hover {
  background: #FF842E;
  color: var(--bg-main);
}

.btn-outline {
  background: transparent;
  color: var(--accent-purple);
  border-color: var(--accent-purple);
}

.btn-outline:hover {
  background: rgba(169, 80, 255, .1);
  color: var(--text-main);
  border-color: var(--accent-purple);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-dim);
  color: var(--text-main);
  background: rgba(176, 182, 206, .06);
}

.btn-sm {
  padding: .4rem .8rem;
  font-size: .82rem;
}

.btn-lg {
  padding: .8rem 1.6rem;
  font-size: 1rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 .6rem;
  padding: var(--space-5) 0 var(--space-3);
  font-size: .84rem;
  color: var(--text-dim);
}

.breadcrumb a {
  color: var(--text-dim);
}

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

.breadcrumb .crumb-sep {
  color: var(--border);
}

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

.page-head {
  position: relative;
  padding: var(--space-8) 0 var(--space-6);
}

.page-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-8);
  bottom: var(--space-6);
  width: 3px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-purple) 100%);
  opacity: .9;
}

.page-head-inner {
  padding-left: var(--space-6);
}

.page-title {
  font-size: clamp(2rem, 3.6vw, 2.7rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.01em;
  margin-bottom: var(--space-3);
}

.page-lead {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 34em;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
  grid-auto-flow: dense;
}

.bento-cell {
  grid-column: span 4;
  min-width: 0;
}

.bento-cell .panel {
  height: 100%;
}

.bento-cell.span-8 {
  grid-column: span 8;
}

.bento-cell.span-6 {
  grid-column: span 6;
}

.bento-cell.span-12 {
  grid-column: span 12;
}

.panel {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: var(--space-5);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: background-color .25s var(--ease-out), border-color .25s var(--ease-out), transform .25s var(--ease-out);
}

.panel:hover {
  border-color: var(--accent-purple);
  transform: translateY(-2px);
}

.panel-highlight {
  background: linear-gradient(135deg, rgba(169, 80, 255, .1) 0%, var(--bg-surface) 45%);
  border-color: var(--accent-purple);
}

.panel-urgent {
  background:
    linear-gradient(115deg, rgba(255, 108, 10, .16), transparent 65%),
    var(--bg-surface);
  border-color: var(--accent);
}

.panel-accent-edge {
  border-right: 2px solid var(--accent);
}

.panel-purple-edge {
  border-right: 2px solid var(--accent-purple);
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(140deg, rgba(169, 80, 255, .12), transparent 45%),
    var(--bg-sub);
  border: 1px solid var(--border);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s var(--ease-out);
}

.media-frame:hover img {
  transform: scale(1.04);
}

.media-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--accent-purple) 70%, var(--accent) 100%);
  pointer-events: none;
}

.media-ratio-16-9 {
  aspect-ratio: 16 / 9;
}

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

.tag {
  display: inline-block;
  padding: .25rem .6rem;
  font-size: .75rem;
  font-weight: 700;
  line-height: 1.4;
  background: var(--bg-sub);
  color: var(--accent-purple);
  border-left: 2px solid var(--accent-purple);
}

.legend-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.legend-tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .65rem;
  font-size: .78rem;
  color: var(--text-dim);
  background: var(--bg-sub);
  border-left: 2px solid var(--accent-purple);
}

.legend-live {
  border-left-color: var(--success);
  color: var(--text-main);
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-dot.is-success {
  background: var(--success);
}

.status-dot.is-warning {
  background: var(--warning);
}

.status-dot.is-accent {
  background: var(--accent);
}

.status-dot.is-live {
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(0, 214, 143, .45);
  animation: pulse-live 1.8s infinite;
}

@keyframes pulse-live {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 214, 143, .45);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(0, 214, 143, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 214, 143, 0);
  }
}

.notice-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: linear-gradient(90deg, rgba(255, 108, 10, .12), rgba(255, 108, 10, .02));
  border-left: 3px solid var(--accent);
  font-size: .92rem;
  color: var(--text-main);
}

.route-index {
  display: grid;
  gap: var(--space-2);
}

.route-index-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: .8rem var(--space-4);
  background: var(--bg-surface);
  border-left: 2px solid var(--border);
  color: var(--text-dim);
  font-size: .95rem;
  transition: background-color .25s var(--ease-out), border-color .25s var(--ease-out), color .25s var(--ease-out), transform .2s var(--ease-out);
}

.route-index-item:hover {
  background: var(--bg-sub);
  border-left-color: var(--accent);
  color: var(--text-main);
  transform: translateX(4px);
}

.route-divider {
  margin: var(--space-6) 0;
  height: 1px;
  position: relative;
  background: linear-gradient(90deg, transparent, var(--border) 12%, var(--border) 88%, transparent);
}

.route-divider::before {
  content: "";
  position: absolute;
  left: 20%;
  top: -2px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  transform: rotate(45deg);
}

.route-divider::after {
  content: "";
  position: absolute;
  left: calc(20% + 10px);
  top: -1px;
  width: 46px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-purple));
  opacity: .75;
}

.star-line {
  display: flex;
  align-items: center;
  gap: .7rem;
  color: var(--border);
}

.star-line::before,
.star-line::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.star-line .star {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  background: var(--accent-purple);
  transform: rotate(45deg);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--accent-purple);
  margin-bottom: var(--space-3);
}

.section-label::before {
  content: "";
  width: 16px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-purple));
}

.prose {
  max-width: 46em;
}

.prose blockquote {
  margin: var(--space-5) 0;
  padding: var(--space-4) var(--space-5);
  border-left: 3px solid var(--accent-purple);
  background: var(--bg-surface);
  color: var(--text-dim);
  font-size: .96rem;
}

.prose ul {
  margin: var(--space-4) 0;
  padding-left: var(--space-5);
}

.prose ul li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: .5rem;
}

.prose ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.prose strong {
  color: var(--text-main);
  font-weight: 700;
}

.field {
  width: 100%;
  padding: .7rem .9rem;
  background: var(--bg-sub);
  border: 1px solid var(--border);
  color: var(--text-main);
  font-family: inherit;
  font-size: .95rem;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}

.field:focus-visible {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(169, 80, 255, .18);
}

.field::placeholder {
  color: var(--text-dim);
  opacity: .7;
}

.alert-box {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255, 193, 7, .06);
  border: 1px solid var(--border);
  border-left: 3px solid var(--warning);
  color: var(--text-dim);
  font-size: .92rem;
}

.alert-box::before {
  content: "!";
  flex: 0 0 auto;
  width: 1.4rem;
  height: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--warning);
}

.alert-box.is-error {
  border-left-color: var(--accent);
  background: rgba(255, 108, 10, .05);
}

.alert-box.is-error::before {
  color: var(--accent);
}

.alert-box.is-success {
  border-left-color: var(--success);
  background: rgba(0, 214, 143, .05);
}

.alert-box.is-success::before {
  content: "✓";
  color: var(--success);
}

.to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1rem;
  background: var(--bg-sub);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: .8rem;
  font-weight: 700;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .22s var(--ease-out), transform .25s var(--ease-out), visibility .22s, border-color .2s var(--ease-out), color .2s var(--ease-out);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

.to-top-line {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border-top: 2px solid currentColor;
  border-left: 2px solid currentColor;
  transform: rotate(45deg);
  margin-top: 3px;
}

.route-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 200;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-purple) 100%);
  box-shadow: 0 0 12px rgba(255, 108, 10, .45);
  transform: scaleX(0);
  transform-origin: 0 0;
  pointer-events: none;
}

@media (max-width: 960px) {
  .site-header {
    --header-h: 64px;
  }

  .header-inner {
    padding: 0 var(--space-4);
    gap: var(--space-2);
  }

  .brand-mark {
    width: 22px;
    height: 22px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .header-main {
    gap: var(--space-2);
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    z-index: 90;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
    background: rgba(11, 14, 31, .97);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 18px 32px rgba(0, 0, 0, .35);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform .28s var(--ease-out), opacity .2s var(--ease-out), visibility .28s;
  }

  .site-nav[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3);
    gap: var(--space-1);
  }

  .nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .9rem var(--space-4);
    border-bottom: 1px solid var(--border);
    font-size: 1.02rem;
  }

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

  .nav-link:hover {
    background: var(--bg-sub);
  }

  .nav-link[aria-current="page"] {
    background: linear-gradient(90deg, rgba(255, 108, 10, .1), transparent);
    color: var(--accent);
    border-left: 3px solid var(--accent);
    padding-left: calc(var(--space-4) - 3px);
  }

  .header-cta {
    margin-left: 0;
    font-size: .85rem;
    padding: .55rem .9rem;
    white-space: nowrap;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .bento-cell,
  .bento-cell.span-6 {
    grid-column: span 6;
  }

  .bento-cell.span-8,
  .bento-cell.span-12 {
    grid-column: span 12;
  }
}

@media (max-width: 720px) {
  .container,
  .header-inner,
  .footer-inner {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .section-block {
    padding: var(--space-6) 0;
  }

  .bento-cell,
  .bento-cell.span-8,
  .bento-cell.span-6,
  .bento-cell.span-12 {
    grid-column: span 12;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    padding-top: var(--space-6);
  }

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

  .page-head {
    padding-top: var(--space-6);
  }

  .to-top {
    right: var(--space-4);
    bottom: var(--space-4);
  }
}

@media (max-width: 480px) {
  .brand-name {
    font-size: 1.05rem;
  }

  .header-cta {
    font-size: .8rem;
    padding: .5rem .7rem;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }
}

@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: 0s !important;
  }

  .status-dot.is-live {
    animation: none;
  }

  .route-progress {
    display: none;
  }
}