:root {
  --deep: #071426;
  --panel: #0E2038;
  --panel-2: #132A46;
  --cyan: #35F2E0;
  --orange: #FF7A2F;
  --sand: #D9C6A3;
  --white: #F2F6FA;
  --fog: #9FB0C2;
  --line: #2A4260;
  --danger: #FF5A5A;
  --font-display: 'Barlow Condensed', 'Oswald', 'Noto Sans SC', sans-serif;
  --font-editorial: 'Noto Serif SC', 'Source Han Serif SC', serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
  --max: 1360px;
  --gutter: clamp(16px, 2vw, 24px);
  --hard-shadow: 6px 6px 0 rgba(53, 242, 224, 0.14);
  --hard-shadow-orange: 6px 6px 0 rgba(255, 122, 47, 0.18);
  --ease: cubic-bezier(.2, .7, .3, 1);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--deep);
  background-image:
    radial-gradient(circle at 12% -4%, rgba(53, 242, 224, 0.12), transparent 32rem),
    radial-gradient(circle at 88% 12%, rgba(255, 122, 47, 0.09), transparent 30rem),
    repeating-linear-gradient(90deg, rgba(42, 66, 96, 0.16) 0, rgba(42, 66, 96, 0.16) 1px, transparent 1px, transparent 96px),
    repeating-linear-gradient(0deg, rgba(42, 66, 96, 0.10) 0, rgba(42, 66, 96, 0.10) 1px, transparent 1px, transparent 96px);
  background-attachment: fixed;
  color: var(--white);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.15vw, 1.125rem);
  line-height: 1.75;
}

body::before {
  content: "";
  position: fixed;
  inset: 12px;
  z-index: 90;
  border: 2px solid var(--line);
  pointer-events: none;
}

::selection {
  background: var(--cyan);
  color: var(--deep);
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

#main-content {
  scroll-margin-top: 9rem;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 200;
  padding: 0.65rem 1rem;
  border: 2px solid var(--cyan);
  background: var(--cyan);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  transform: translate(-50%, -180%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus-visible {
  transform: translate(-50%, 0);
}

.wrap-wide,
.content-wrap {
  width: min(var(--max), calc(100% - var(--gutter) - var(--gutter)));
  margin-inline: auto;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.serif {
  font-family: var(--font-editorial);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.8rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-number {
  display: block;
  color: var(--sand);
  font-family: var(--font-editorial);
  font-size: clamp(3.4rem, 7vw, 5.6rem);
  font-style: italic;
  font-weight: 700;
  line-height: 0.8;
}

.panel {
  padding: clamp(1rem, 2vw, 1.4rem);
  border: 2px solid var(--line);
  background: linear-gradient(145deg, rgba(19, 42, 70, 0.92), rgba(14, 32, 56, 0.96));
  box-shadow: var(--hard-shadow);
}

.panel--focus {
  border-color: var(--cyan);
  box-shadow: 6px 6px 0 rgba(53, 242, 224, 0.22);
}

.panel--note {
  border-color: var(--sand);
  background: var(--sand);
  color: var(--deep);
  box-shadow: 6px 6px 0 rgba(217, 198, 163, 0.18);
}

.panel--note :is(h1, h2, h3, h4) {
  color: var(--deep);
}

.panel--data {
  background: var(--panel-2);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.bento-card {
  min-width: 0;
}

.bento-card--focus {
  border-color: var(--cyan);
}

.bento-card--note {
  background: var(--sand);
  color: var(--deep);
}

.bento-card--data {
  background: var(--panel-2);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 44px;
  padding: 0.7rem 1.05rem;
  border: 2px solid var(--cyan);
  background: transparent;
  box-shadow: 4px 4px 0 rgba(53, 242, 224, 0.18);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s, color 0.2s, border-color 0.2s;
}

.btn:hover {
  transform: translate(-2px, -2px);
  border-color: var(--cyan);
  box-shadow: 6px 6px 0 rgba(53, 242, 224, 0.24);
}

.btn--primary {
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 5px 5px 0 rgba(255, 122, 47, 0.24);
  color: var(--deep);
}

.btn--primary:hover {
  border-color: var(--orange);
  box-shadow: 7px 7px 0 rgba(255, 122, 47, 0.28);
}

.btn--ghost {
  border-color: var(--line);
  background: rgba(14, 32, 56, 0.5);
  box-shadow: 4px 4px 0 rgba(42, 66, 96, 0.35);
  color: var(--fog);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--white);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 24px;
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--line);
  background: rgba(14, 32, 56, 0.5);
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.35;
}

.chip--cyan {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--deep);
}

.chip--orange {
  border-color: var(--orange);
  background: var(--orange);
  color: var(--deep);
}

.chip--danger {
  border-color: var(--danger);
  background: rgba(255, 90, 90, 0.16);
  color: var(--white);
}

.breadcrumb {
  margin-block: clamp(1rem, 3vw, 2rem);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
}

.breadcrumb__list li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb__list li + li::before {
  content: "/";
  margin-right: 0.35rem;
  color: var(--line);
}

.breadcrumb__link {
  border-bottom: 1px solid transparent;
  color: var(--fog);
  text-decoration: none;
}

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

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

.media-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 2px solid var(--line);
  background:
    linear-gradient(145deg, rgba(19, 42, 70, 0.9), rgba(7, 20, 38, 0.96)),
    repeating-linear-gradient(45deg, rgba(53, 242, 224, 0.08) 0, rgba(53, 242, 224, 0.08) 1px, transparent 1px, transparent 12px);
  box-shadow: var(--hard-shadow);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 8px;
  z-index: 2;
  border: 1px solid rgba(53, 242, 224, 0.22);
  pointer-events: none;
}

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

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

.media-frame--portrait {
  aspect-ratio: 4 / 5;
}

.media-frame--diagonal {
  clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
}

.prose {
  max-width: 68ch;
  color: var(--fog);
}

.prose > * + * {
  margin-top: 1em;
}

.prose h2,
.prose h3 {
  margin-top: 1.4em;
  color: var(--white);
}

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

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

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.48s var(--ease), transform 0.48s var(--ease);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  border-bottom: 2px solid var(--line);
  background: rgba(7, 20, 38, 0.96);
  box-shadow: 0 2px 0 rgba(53, 242, 224, 0.12);
}

.scroll-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  z-index: 2;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.site-header__inner {
  padding-block: clamp(0.7rem, 1.8vw, 1rem) clamp(0.55rem, 1.4vw, 0.8rem);
}

.site-header__top {
  display: flex;
  align-items: center;
  gap: clamp(0.7rem, 2vw, 1.25rem);
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(42, 66, 96, 0.85);
}

.brand-mark {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.7rem;
}

.brand-mark__monogram {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--cyan);
  background: linear-gradient(135deg, rgba(53, 242, 224, 0.12), rgba(255, 122, 47, 0.06));
  box-shadow: 4px 4px 0 rgba(53, 242, 224, 0.18);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}

.brand-mark__text {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  min-width: 0;
}

.brand-mark__name {
  color: var(--white);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.95rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-mark__tag {
  padding-left: 0.65rem;
  border-left: 1px solid var(--line);
  color: var(--sand);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.live-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0 auto;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--line);
  background: rgba(14, 32, 56, 0.8);
  box-shadow: inset 0 0 0 1px rgba(53, 242, 224, 0.06);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1.4;
  white-space: nowrap;
}

.live-status__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 47, 0.16);
  animation: statusPulse 2.4s ease-in-out infinite;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.45rem 0.65rem;
  border: 2px solid var(--cyan);
  background: transparent;
  box-shadow: 4px 4px 0 rgba(53, 242, 224, 0.18);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: var(--cyan);
  color: var(--deep);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 4px 4px 0 rgba(255, 122, 47, 0.24);
  color: var(--deep);
}

.nav-toggle__icon {
  position: relative;
  width: 18px;
  height: 12px;
  border-top: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
}

.nav-toggle__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  border-top: 2px solid currentColor;
  transform: translateY(-50%);
}

.nav-toggle__text {
  line-height: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.6rem;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.38rem;
  min-height: 44px;
  padding: 0.55rem 0.7rem;
  border: 1px solid transparent;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.2;
  transition: color 0.2s, background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.site-nav__index {
  color: var(--line);
  font-family: var(--font-mono);
  font-size: 0.6rem;
}

.site-nav__label {
  white-space: nowrap;
}

.site-nav__link:hover {
  border-color: var(--line);
  background: var(--panel);
  box-shadow: 4px 4px 0 rgba(53, 242, 224, 0.12);
  color: var(--white);
  transform: translate(-1px, -1px);
}

.site-nav__link[aria-current="page"] {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 4px 4px 0 rgba(53, 242, 224, 0.25);
  color: var(--deep);
}

.site-nav__link[aria-current="page"] .site-nav__index {
  color: rgba(7, 20, 38, 0.64);
}

.site-nav__meta {
  padding-left: 1rem;
  border-left: 1px solid var(--line);
  color: var(--fog);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(3rem, 7vw, 6rem);
  border-top: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 32, 56, 0.72), rgba(7, 20, 38, 0.96));
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(53, 242, 224, 0.035) 0, rgba(53, 242, 224, 0.035) 1px, transparent 1px, transparent 14px);
  opacity: 0.8;
  pointer-events: none;
}

.site-footer > * {
  position: relative;
  z-index: 1;
}

.site-footer__bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
  padding-block: clamp(1.5rem, 4vw, 3rem) 1.5rem;
}

.footer-brand {
  grid-column: span 4;
}

.footer-brand__mark {
  display: inline-block;
  color: var(--white);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
}

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

.footer-brand__line {
  margin: 0.8rem 0;
  color: var(--sand);
  font-family: var(--font-editorial);
  font-style: italic;
  line-height: 1.6;
}

.footer-brand__meta {
  padding-top: 0.65rem;
  border-top: 1px solid var(--line);
  color: var(--fog);
  font-size: 0.68rem;
}

.footer-index {
  grid-column: span 3;
}

.footer-title {
  margin: 0 0 0.8rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
}

.footer-index__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem 0.8rem;
}

.footer-index__link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  border-bottom: 1px solid transparent;
  color: var(--fog);
  font-size: 0.9rem;
  line-height: 1.2;
}

.footer-index__link:hover {
  border-bottom-color: var(--cyan);
  color: var(--cyan);
}

.footer-contact {
  grid-column: span 3;
}

.footer-contact p {
  margin: 0.4rem 0;
  color: var(--fog);
  font-size: 0.88rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.footer-contact__label {
  display: inline-block;
  min-width: 3.7rem;
  color: var(--cyan);
  font-size: 0.64rem;
}

.footer-contact__note {
  margin-top: 0.75rem !important;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
  color: var(--fog) !important;
  font-size: 0.72rem !important;
}

.footer-status {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 0.55rem;
  border-color: rgba(53, 242, 224, 0.52);
  background: linear-gradient(145deg, rgba(53, 242, 224, 0.1), rgba(14, 32, 56, 0.96));
  color: var(--white);
  font-size: 0.9rem;
}

.footer-status__badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.18rem 0.45rem;
  background: var(--cyan);
  color: var(--deep);
  font-size: 0.64rem;
  line-height: 1.4;
}

.footer-status__small {
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.9rem 1.3rem;
  border-top: 1px solid var(--line);
  color: var(--fog);
  font-size: 0.8rem;
}

.site-footer__bottom p {
  margin: 0;
}

@keyframes statusPulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.55;
  }
}

@media (max-width: 1024px) {
  .site-nav__meta {
    display: none;
  }

  .bento-grid {
    gap: 16px;
  }

  .span-3,
  .span-4 {
    grid-column: span 6;
  }

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

  .site-footer__bento {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .footer-brand,
  .footer-index,
  .footer-contact,
  .footer-status {
    grid-column: span 3;
  }
}

@media (max-width: 820px) {
  body::before {
    inset: 6px;
  }

  #main-content {
    scroll-margin-top: 12rem;
  }

  .site-header__top {
    flex-wrap: wrap;
    gap: 0.55rem 0.7rem;
  }

  .brand-mark__tag {
    display: none;
  }

  .brand-mark__name {
    font-size: clamp(1.15rem, 4vw, 1.55rem);
  }

  .brand-mark__monogram {
    width: 40px;
    height: 40px;
  }

  .live-status {
    order: 3;
    flex: 1 0 100%;
    justify-content: center;
    margin-left: 0;
    font-size: 0.58rem;
    white-space: normal;
    text-align: center;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-nav {
    display: none;
    padding-top: 0.7rem;
  }

  .site-nav[data-open="false"] {
    display: none;
  }

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

  .site-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
  }

  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    border-color: var(--line);
    background: var(--panel);
  }

  .site-nav__meta {
    display: none;
  }
}

@media (max-width: 640px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }

  .span-3,
  .span-4,
  .span-6,
  .span-8,
  .span-12 {
    grid-column: 1 / -1;
  }

  .site-nav__list {
    grid-template-columns: 1fr;
  }

  .site-footer__bento {
    grid-template-columns: 1fr;
  }

  .footer-brand,
  .footer-index,
  .footer-contact,
  .footer-status {
    grid-column: 1 / -1;
  }

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

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }
}

@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}