:root {
  --c-bg: #0D1B2A;
  --c-panel: #1B263B;
  --c-panel-deep: #0B0C10;
  --c-ink: #E0E1DD;
  --c-muted: #969A9F;
  --c-orange: #FF6B35;
  --c-lime: #A3E635;
  --c-violet: #9D4EDD;
  --c-line: rgba(224, 225, 221, 0.16);
  --c-line-strong: rgba(224, 225, 221, 0.34);
  --font-display: "Space Grotesk", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans", "PingFang SC", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
  --space: 5px;
  --sp-2: 10px;
  --sp-3: 15px;
  --sp-4: 20px;
  --gutter: clamp(16px, 4vw, 64px);
  --section-space: clamp(64px, 10vw, 128px);
  --radius: 18px;
  --shadow: 8px 8px 0 rgba(11, 12, 16, 0.85);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(900px 360px at 92% -5%, rgba(157, 78, 221, 0.22), transparent 60%),
    radial-gradient(640px 260px at 8% 22%, rgba(163, 230, 53, 0.1), transparent 60%),
    var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

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

a {
  color: var(--c-ink);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--c-lime);
  outline-offset: 3px;
}

::selection {
  background: var(--c-orange);
  color: var(--c-bg);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 300;
  padding: 10px 18px;
  background: var(--c-orange);
  color: var(--c-bg);
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 14px 0;
}

.skip-link:focus {
  left: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(13, 27, 42, 0.92);
  border-bottom: 2px solid var(--c-line);
  backdrop-filter: blur(10px);
}

.header-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 1440px;
  margin-inline: auto;
  min-height: 66px;
  padding: 10px var(--gutter);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  margin-right: auto;
  text-decoration: none;
  color: var(--c-ink);
}

.brand-mark {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--c-lime);
  color: var(--c-bg);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.05em;
  border-radius: 12px 4px 12px 4px;
}

.brand-name {
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 27px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-sub {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-muted);
  white-space: nowrap;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.live-tick {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border: 1px solid rgba(163, 230, 53, 0.5);
  border-radius: 999px;
  background: rgba(163, 230, 53, 0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-lime);
  white-space: nowrap;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-lime);
  animation: pulse 1.6s ease-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.72); }
}

.header-batch {
  display: inline-flex;
  padding: 6px 12px;
  border: 2px solid var(--c-orange);
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.12);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-ink);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 44px;
  height: 44px;
  border: 2px solid var(--c-line-strong);
  border-radius: 50%;
  background: var(--c-panel);
  color: var(--c-ink);
  cursor: pointer;
}

.nav-toggle-line,
.nav-toggle-line::before,
.nav-toggle-line::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.22s ease, background 0.22s ease;
}

.nav-toggle-line {
  position: relative;
  margin: 0 auto;
}

.nav-toggle-line::before,
.nav-toggle-line::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-line::before {
  top: -6px;
}

.nav-toggle-line::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line::after {
  top: 0;
  transform: rotate(-45deg);
}

.primary-nav {
  position: fixed;
  top: 50%;
  right: 16px;
  z-index: 120;
  width: 56px;
  max-height: 70vh;
  overflow: hidden;
  padding: 14px 6px;
  background: rgba(27, 38, 59, 0.96);
  border: 2px solid var(--c-line-strong);
  border-radius: 999px;
  box-shadow: var(--shadow), 0 0 36px rgba(157, 78, 221, 0.14);
  transform: translateY(-50%);
  transition: width 0.28s cubic-bezier(0.2, 0.7, 0.2, 1), padding 0.28s;
}

.primary-nav:hover,
.primary-nav:focus-within {
  width: 168px;
  padding-right: 10px;
  padding-left: 10px;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--c-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  color: var(--c-lime);
  opacity: 0.8;
}

.nav-label {
  max-width: 0;
  overflow: hidden;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateX(6px);
  transition: max-width 0.28s ease, opacity 0.2s ease, transform 0.2s ease;
}

.primary-nav:hover .nav-label,
.primary-nav:focus-within .nav-label {
  max-width: 140px;
  opacity: 1;
  transform: none;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  background: rgba(255, 107, 53, 0.16);
}

.nav-link[aria-current="page"] .nav-index,
.nav-link[aria-current="page"] .nav-label {
  color: var(--c-orange);
}

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

.page-shell {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section-block {
  position: relative;
  padding-block: var(--section-space);
}

.section-block + .section-block {
  border-top: 2px solid var(--c-panel);
}

.section-index {
  font-family: var(--font-mono);
  font-size: clamp(64px, 12vw, 160px);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-line-strong);
}

.section-headline {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 76px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.section-note {
  position: absolute;
  right: 0;
  top: 2rem;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 20px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: var(--c-orange);
  color: var(--c-bg);
  border: 2px solid var(--c-orange);
  box-shadow: 6px 6px 0 var(--c-panel-deep);
}

.btn-primary:hover {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 var(--c-panel-deep);
}

.btn-secondary {
  background: transparent;
  color: var(--c-ink);
  border: 2px solid var(--c-line-strong);
  box-shadow: 5px 5px 0 var(--c-panel-deep);
}

.btn-secondary:hover {
  border-color: var(--c-lime);
  color: var(--c-lime);
  transform: translate(2px, 2px);
}

.theme-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.theme-filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: transparent;
  border: 2px solid var(--c-line-strong);
  border-radius: 999px;
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.theme-filter:hover {
  border-color: var(--c-lime);
  color: var(--c-lime);
}

.theme-filter.is-active,
.theme-filter[aria-pressed="true"] {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-bg);
}

.card {
  position: relative;
  padding: 24px;
  background: var(--c-panel);
  border: 2px solid var(--c-line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.tiltable {
  transform: rotate(var(--tilt, -1.2deg));
  transition: transform 0.3s ease;
}

.tiltable:hover,
.tiltable:focus-within {
  transform: rotate(0deg) translateY(-6px);
}

.image-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-panel);
  border: 2px solid var(--c-line-strong);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  mix-blend-mode: screen;
  background:
    linear-gradient(135deg, rgba(157, 78, 221, 0.3), transparent 50%),
    linear-gradient(315deg, rgba(255, 107, 53, 0.22), transparent 50%),
    repeating-linear-gradient(0deg, transparent, transparent 18px, rgba(224, 225, 221, 0.08) 18px, rgba(224, 225, 221, 0.08) 19px);
}

.image-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.media-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.media-grid > * {
  grid-column: span 6;
}

.media-caption {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
}

.media-caption::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--c-lime);
}

.data-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 12px;
  border-top: 2px solid var(--c-line);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-lime);
  box-shadow: 0 0 12px rgba(163, 230, 53, 0.5);
}

.site-footer {
  margin-top: var(--section-space);
  background: linear-gradient(180deg, var(--c-bg), var(--c-panel-deep));
  border-top: 2px solid var(--c-line);
}

.footer-shell {
  max-width: 1280px;
  margin-inline: auto;
  padding: 48px var(--gutter) 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 32px;
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.trust-statement {
  margin: 4px 0 0;
  max-width: 46ch;
  padding: 10px 12px;
  border-left: 3px solid var(--c-orange);
  background: rgba(255, 107, 53, 0.07);
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.footer-nav-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-lime);
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 16px;
}

.footer-list a {
  text-decoration: none;
  color: var(--c-ink);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-list a:hover,
.footer-list a[aria-current="page"] {
  color: var(--c-lime);
  border-color: var(--c-lime);
}

.footer-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--c-line);
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-muted);
}

.footer-contact-value {
  font-size: 14px;
  color: var(--c-ink);
  overflow-wrap: anywhere;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 2px solid var(--c-line);
}

.copyright {
  margin: 0;
  font-size: 13px;
  color: var(--c-muted);
}

.footer-legal {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
}

.footer-legal a {
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-legal a:hover {
  color: var(--c-lime);
  border-color: var(--c-lime);
}

.legal-sep {
  color: var(--c-muted);
}

.footer-icp {
  padding-left: 10px;
  border-left: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
}

@media (max-width: 860px) {
  .primary-nav {
    position: fixed;
    top: 72px;
    right: var(--gutter);
    left: var(--gutter);
    width: auto;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
    padding: 14px;
    border-radius: 18px;
    background: rgba(27, 38, 59, 0.98);
    box-shadow: 10px 10px 0 var(--c-panel-deep);
    transform: translateY(-8px) scale(0.98);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.22s ease, opacity 0.22s ease;
  }

  .primary-nav[data-open] {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .primary-nav .nav-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .primary-nav .nav-link {
    height: 48px;
    padding: 0 12px;
  }

  .primary-nav .nav-label {
    max-width: none;
    width: auto;
    overflow: visible;
    opacity: 1;
    transform: none;
  }

  .primary-nav .nav-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex: none;
    background: rgba(224, 225, 221, 0.08);
    border-radius: 999px;
  }

  .primary-nav .nav-link[aria-current="page"] {
    background: var(--c-orange);
    color: var(--c-bg);
  }

  .primary-nav .nav-link[aria-current="page"] .nav-index,
  .primary-nav .nav-link[aria-current="page"] .nav-label {
    color: var(--c-bg);
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

@media (max-width: 640px) {
  .brand-sub {
    display: none;
  }

  .live-tick {
    display: none;
  }

  .header-batch {
    font-size: 11px;
    padding: 5px 10px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

  .media-grid > * {
    grid-column: span 12;
  }

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

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}