:root {
  --bg: #070a0f;
  --bg-soft: #0a1017;
  --panel: rgba(13, 20, 29, .78);
  --panel-solid: #0d141d;
  --line: rgba(146, 166, 184, .16);
  --line-strong: rgba(94, 234, 212, .34);
  --text: #e8eef4;
  --muted: #93a2b1;
  --dim: #5e6d7b;
  --accent: #5eead4;
  --accent-soft: rgba(94, 234, 212, .1);
  --amber: #f3c969;
  --red: #ff8585;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1180px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(94, 234, 212, .075), transparent 65%),
    radial-gradient(700px 460px at 8% 18%, rgba(243, 201, 105, .045), transparent 60%),
    var(--bg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(146, 166, 184, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(146, 166, 184, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
}

::selection { background: var(--accent); color: #04110e; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: #a7fff3; }

code {
  font-family: var(--mono);
  font-size: .88em;
  color: var(--amber);
  background: rgba(243, 201, 105, .08);
  border: 1px solid rgba(243, 201, 105, .14);
  border-radius: 4px;
  padding: .12em .35em;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: .6rem .9rem;
  background: var(--accent);
  color: #04110e;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: .8rem;
}
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 10, 15, .78);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--text);
  flex: 0 0 auto;
}
.brand:hover { color: var(--text); }

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line-strong);
  background: var(--accent-soft);
  box-shadow: inset 0 0 18px rgba(94, 234, 212, .08);
}
.brand-mark img {
  width: 30px;
  height: 30px;
  image-rendering: pixelated;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  font-family: var(--mono);
  letter-spacing: .12em;
}
.brand-text strong { font-size: .72rem; font-weight: 600; }
.brand-text em { font-size: .62rem; font-style: normal; color: var(--accent); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .06em;
}
.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--text); }
.site-nav .nav-cta {
  color: var(--accent);
  border: 1px solid var(--line-strong);
  padding: .45rem .7rem;
  background: var(--accent-soft);
}
.site-nav .nav-cta:hover { background: rgba(94, 234, 212, .18); }

main, .site-footer {
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, .88fr);
  gap: clamp(2.5rem, 6vw, 5.5rem);
  align-items: center;
  min-height: min(760px, calc(100vh - 76px));
  padding: clamp(4rem, 9vw, 8rem) 0;
}

.eyebrow, .kicker {
  margin: 0 0 1.2rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: .65rem;
  color: var(--muted);
  font-size: .65rem;
  letter-spacing: .11em;
}

.signal {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(94, 234, 212, .45);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(94, 234, 212, .38); }
  50% { box-shadow: 0 0 0 7px rgba(94, 234, 212, 0); }
}

.hero h1 {
  margin: 0;
  font-size: clamp(3.8rem, 10.5vw, 8.4rem);
  font-weight: 600;
  line-height: .83;
  letter-spacing: -.075em;
}
.hero h1 span {
  color: transparent;
  -webkit-text-stroke: 1px rgba(232, 238, 244, .72);
  text-stroke: 1px rgba(232, 238, 244, .72);
}

.hero-cn {
  margin: .95rem 0 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .45em;
}

.lede {
  max-width: 34em;
  margin: 1.55rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.14rem);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 42px;
  padding: .62rem 1rem;
  border: 1px solid transparent;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .03em;
  transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  color: #04110e;
  background: var(--accent);
  border-color: var(--accent);
}
.btn-primary:hover { color: #04110e; background: #a7fff3; }
.btn-ghost {
  color: var(--text);
  background: transparent;
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--line-strong); background: var(--accent-soft); }

.text-link {
  color: var(--muted);
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .03em;
}
.text-link:hover { color: var(--accent); }

.stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .8rem;
  margin: 2.7rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.stats div { min-width: 0; }
.stats dt {
  color: var(--text);
  font-family: var(--mono);
  font-size: clamp(.86rem, 1.2vw, 1.02rem);
  white-space: nowrap;
}
.stats dd {
  margin: .2rem 0 0;
  color: var(--dim);
  font-size: .7rem;
  white-space: nowrap;
}

.hero-panel {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(17, 27, 38, .88), rgba(8, 13, 19, .9));
  box-shadow: 0 24px 70px rgba(0, 0, 0, .24);
}
.hero-panel::before, .hero-panel::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--accent);
  border-style: solid;
  opacity: .7;
}
.hero-panel::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.hero-panel::after { right: -1px; bottom: -1px; border-width: 0 1px 1px 0; }

.panel-head, .panel-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .75rem 1rem;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .08em;
  border-bottom: 1px solid var(--line);
}
.panel-foot { border-top: 1px solid var(--line); border-bottom: 0; }
.panel-live { color: var(--accent); display: inline-flex; align-items: center; gap: .4rem; }
.panel-live i {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.layer-stack { padding: .45rem 0; }
.layer {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  align-items: center;
  gap: .75rem;
  padding: .9rem 1rem;
  border-bottom: 1px solid rgba(146, 166, 184, .09);
  transition: background .18s ease, padding-left .18s ease;
}
.layer:last-child { border-bottom: 0; }
.layer:hover { background: rgba(94, 234, 212, .045); padding-left: 1.2rem; }
.layer-id { color: var(--dim); font-family: var(--mono); font-size: .64rem; }
.layer-copy { display: flex; flex-direction: column; gap: .12rem; min-width: 0; }
.layer-copy strong { font-size: .88rem; font-weight: 500; }
.layer-copy small { color: var(--muted); font-size: .68rem; }
.layer-tag {
  color: var(--dim);
  border: 1px solid var(--line);
  padding: .18rem .38rem;
  font-family: var(--mono);
  font-size: .58rem;
  white-space: nowrap;
}
.layer-hot { background: linear-gradient(90deg, rgba(94, 234, 212, .07), transparent); }
.layer-hot .layer-id, .layer-hot .layer-tag { color: var(--accent); }
.layer-hot .layer-tag { border-color: var(--line-strong); }

.section {
  padding: clamp(4.5rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(150px, .4fr) minmax(0, 1.6fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  margin-bottom: clamp(2.2rem, 5vw, 4rem);
}
.section-head .kicker { margin: 0; padding-top: .5rem; }
.section-head h2 {
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 3.8rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.045em;
}
.section-lede {
  max-width: 40em;
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.9;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  min-height: 190px;
  padding: 1.5rem;
  background: var(--bg-soft);
  transition: background .2s ease, transform .2s ease;
}
.card:hover { background: #0f1822; transform: translateY(-2px); }
.card-num {
  color: var(--dim);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.card h3 {
  margin: 1.7rem 0 .55rem;
  font-size: 1.04rem;
  font-weight: 500;
  letter-spacing: -.01em;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.8;
}
.cards-six { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-small { min-height: 168px; }
.card-small h3 { margin-top: 1.25rem; }
.card-accent { background: linear-gradient(145deg, rgba(94, 234, 212, .09), var(--bg-soft) 55%); }
.card-accent .card-num { color: var(--accent); }

.arch-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px minmax(0, .72fr);
  gap: 1.4rem;
  align-items: center;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(94, 234, 212, .035), transparent 45%),
    var(--bg-soft);
}
.arch-side { display: flex; flex-direction: column; gap: .55rem; }
.arch-label {
  margin: 0 0 .55rem;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .12em;
}
.arch-node {
  position: relative;
  display: flex;
  align-items: center;
  gap: .8rem;
  min-height: 54px;
  padding: .65rem .8rem;
  border: 1px solid var(--line);
  background: rgba(7, 12, 18, .62);
}
.arch-node > span {
  display: grid;
  place-items: center;
  flex: 0 0 26px;
  height: 26px;
  color: var(--dim);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .58rem;
}
.arch-node div { display: flex; flex-direction: column; gap: .1rem; min-width: 0; }
.arch-node strong { font-size: .82rem; font-weight: 500; }
.arch-node small { color: var(--muted); font-size: .67rem; }
.arch-node b {
  margin-left: auto;
  color: var(--accent);
  font-family: var(--mono);
  font-size: .6rem;
  font-weight: 400;
}
.arch-node-accent { border-color: var(--line-strong); background: rgba(94, 234, 212, .05); }
.arch-node-hot { border-left: 2px solid var(--accent); }
.arch-node-hot > span { color: var(--accent); border-color: var(--line-strong); }
.arch-arrow {
  padding: .15rem 0 .15rem 2.7rem;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .6rem;
}
.arch-arrow span { color: var(--accent); margin-right: .4rem; }
.arch-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .7rem;
  text-align: center;
}
.arch-link-line { width: 1px; height: 48px; background: linear-gradient(var(--line-strong), var(--line)); }
.arch-link div { display: flex; flex-direction: column; gap: .1rem; }
.arch-link strong { color: var(--accent); font-family: var(--mono); font-size: .63rem; font-weight: 400; }
.arch-link small { color: var(--dim); font-family: var(--mono); font-size: .56rem; }
.arch-hand { align-self: stretch; justify-content: center; }
.arch-image {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  background: #070a0f;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .32);
}
.arch-image-note {
  margin: 1rem 0 0;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .66rem;
  line-height: 1.8;
}

.arch-note {
  margin-top: .8rem;
  padding: 1rem;
  color: var(--muted);
  border-left: 1px solid var(--line-strong);
  background: rgba(94, 234, 212, .035);
  font-size: .78rem;
  line-height: 1.8;
}

.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.principles li {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 1.2rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}
.principle-num { color: var(--dim); font-family: var(--mono); font-size: .68rem; }
.principles h3 { margin: 0; font-size: 1.02rem; font-weight: 500; }
.principles p { max-width: 52em; margin: .35rem 0 0; color: var(--muted); font-size: .86rem; line-height: 1.8; }

.section-status { position: relative; }
.status-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}
.status-main, .status-side { padding: clamp(1.4rem, 3vw, 2rem); background: var(--bg-soft); }
.status-label {
  margin: 0 0 1.2rem;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.timeline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  color: var(--text);
  font-family: var(--mono);
  font-size: .72rem;
}
.timeline i { color: var(--dim); font-style: normal; }
.timeline span { padding: .35rem .5rem; border: 1px solid var(--line); }
.timeline .timeline-end { color: #04110e; background: var(--accent); border-color: var(--accent); }
.status-main > p:last-child { margin: 1.3rem 0 0; color: var(--muted); font-size: .86rem; line-height: 1.9; }
.tag-list { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.tag-list li {
  padding: .35rem .55rem;
  color: var(--muted);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .68rem;
}
.status-note { margin: 1.2rem 0 0; color: var(--dim); font-family: var(--mono); font-size: .64rem; }

.carriage-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: 1.3rem;
  border: 1px solid var(--line);
  background: var(--line);
}
.carriage-stats div { padding: 1rem 1.1rem; background: var(--bg-soft); }
.carriage-stats strong { display: block; color: var(--accent); font-family: var(--mono); font-size: 1.05rem; font-weight: 400; }
.carriage-stats span { display: block; margin-top: .25rem; color: var(--dim); font-size: .66rem; }
.section-foot { margin-top: 1.4rem; text-align: right; }

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) auto;
  gap: 2rem;
  align-items: end;
  margin: clamp(4rem, 8vw, 6rem) 0;
  padding: clamp(1.6rem, 4vw, 3rem);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(600px 260px at 10% 0%, rgba(94, 234, 212, .12), transparent 70%),
    linear-gradient(135deg, #0d1a21, #0a1118 60%);
  position: relative;
  overflow: hidden;
}
.cta::after {
  content: "BRIDGE / 26";
  position: absolute;
  right: 1.2rem;
  bottom: -1.2rem;
  color: rgba(94, 234, 212, .055);
  font-family: var(--mono);
  font-size: clamp(3rem, 9vw, 7rem);
  letter-spacing: -.06em;
  pointer-events: none;
}
.cta .kicker { margin-bottom: .9rem; }
.cta h2 { margin: 0; font-size: clamp(1.8rem, 3.7vw, 3.3rem); font-weight: 500; line-height: 1.15; letter-spacing: -.04em; }
.cta p:not(.kicker) { margin: 1rem 0 0; color: var(--muted); font-size: .88rem; }
.cta-actions { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: .65rem; justify-content: flex-end; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem 0 2.2rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-family: var(--mono);
  font-size: .66rem;
  line-height: 1.9;
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }
.footer-brand { color: var(--text); letter-spacing: .1em; margin-right: 1rem; }
.footer-meta { text-align: right; }
.footer-meta a { margin-left: 1rem; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; min-height: auto; gap: 3.2rem; }
  .hero-panel { max-width: 620px; }
  .arch-board { grid-template-columns: 1fr; }
  .arch-link { flex-direction: row; justify-content: center; }
  .arch-link-line { width: 60px; height: 1px; }
  .arch-hand { display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
  .arch-hand .arch-label, .arch-hand .arch-note { grid-column: 1 / -1; }
  .cta { grid-template-columns: 1fr; align-items: start; }
  .cta-actions { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .site-header { align-items: flex-start; padding: .9rem 0; }
  .site-nav { gap: 1rem; flex-wrap: wrap; justify-content: flex-end; }
  .site-nav a:not(.nav-cta) { display: none; }
  .hero { padding: 4rem 0 3.5rem; }
  .hero h1 { font-size: clamp(3.3rem, 17vw, 5.6rem); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .9rem 1.2rem; }
  .section-head { grid-template-columns: 1fr; gap: 1rem; }
  .section-head .kicker { padding-top: 0; }
  .cards, .cards-six { grid-template-columns: 1fr; }
  .card { min-height: 0; }
  .status-grid { grid-template-columns: 1fr; }
  .carriage-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principles li { grid-template-columns: 2.4rem minmax(0, 1fr); gap: .8rem; }
  .arch-hand { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; }
  .footer-meta { text-align: left; }
  .footer-meta a { margin: 0 1rem 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}