/* 动态圈层 · 上下游客户互通 */
:root {
  --bg: #0d1a28;
  --panel: #132536;
  --lift: #1a3348;
  --ink: #e8f1f8;
  --mute: #8aa3b8;
  --line: rgba(46, 196, 182, 0.18);
  --orbit: #2ec4b6;
  --orbit-deep: #1f9e93;
  --link: #ff7a45;
  --sky: #4a90c8;
  --shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --font-display: "Trebuchet MS", "Segoe UI Variable Display", "Microsoft YaHei UI", sans-serif;
  --font-body: "Segoe UI", "Microsoft YaHei UI", sans-serif;
  --font-meta: "Cascadia Mono", "Consolas", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(800px 500px at 85% 5%, rgba(46, 196, 182, 0.16), transparent 55%),
    radial-gradient(700px 420px at 10% 20%, rgba(74, 144, 200, 0.14), transparent 50%),
    radial-gradient(600px 400px at 50% 90%, rgba(255, 122, 69, 0.08), transparent 50%),
    linear-gradient(180deg, #0a1520 0%, var(--bg) 40%, #0f2030 100%);
  line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.2; margin: 0 0 0.55rem; letter-spacing: -0.01em; }
p { margin: 0 0 0.85rem; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }

.orbit-shell { position: relative; overflow: clip; }
.orbit-shell > * { position: relative; z-index: 1; }

/* ring nav */
.ringnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0 0.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.brand .core {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #7aefe4, var(--orbit) 45%, var(--orbit-deep));
  box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.2), 0 0 0 7px rgba(46, 196, 182, 0.08);
  animation: corepulse 2.8s ease-in-out infinite;
}
@keyframes corepulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.2), 0 0 0 7px rgba(46, 196, 182, 0.08); }
  50% { box-shadow: 0 0 0 4px rgba(46, 196, 182, 0.28), 0 0 0 10px rgba(46, 196, 182, 0.12); }
}
.brand b { display: block; font-size: 1.12rem; }
.brand small {
  display: block;
  font-family: var(--font-meta);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--mute);
  text-transform: uppercase;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  font-size: 0.9rem;
  color: var(--mute);
}
.nav a:hover, .nav a.on { color: var(--orbit); }
.connect {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--orbit), var(--orbit-deep));
  color: #06201d;
  font-weight: 800;
  font-size: 0.86rem;
  white-space: nowrap;
  box-shadow: 0 10px 24px rgba(46, 196, 182, 0.28);
  transition: transform 0.18s ease;
}
.connect:hover { transform: translateY(-1px); }

/* hub hero */
.hub {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem 0 2.2rem;
}
.hub-copy {
  background: linear-gradient(165deg, rgba(26, 51, 72, 0.95), rgba(19, 37, 54, 0.9));
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding: 1.55rem 1.45rem 1.35rem;
  box-shadow: var(--shadow);
}
.layer-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-meta);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--orbit);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.layer-tag i {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--link);
  display: inline-block;
  animation: blink 1.6s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hub-copy h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.7rem);
  margin-bottom: 0.7rem;
}
.lead { color: var(--mute); font-size: 1.02rem; max-width: 36rem; }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.15rem 0 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 9.5rem;
  padding: 0.72rem 1.15rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.94rem;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  border: 1px solid transparent;
  transition: transform 0.18s ease, background 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-orbit {
  background: linear-gradient(135deg, var(--orbit), var(--orbit-deep));
  color: #06201d;
  box-shadow: 0 12px 24px rgba(46, 196, 182, 0.25);
}
.btn-ring {
  background: transparent;
  color: var(--ink);
  border-color: rgba(46, 196, 182, 0.35);
}
.reqs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}
.reqs p {
  margin: 0;
  padding: 0.55rem 0.7rem;
  border-radius: 12px;
  background: rgba(13, 26, 40, 0.55);
  border: 1px dashed rgba(46, 196, 182, 0.25);
  font-size: 0.82rem;
  color: var(--mute);
}
.reqs b {
  display: block;
  font-family: var(--font-meta);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin-bottom: 0.12rem;
}

.orbit-stage {
  position: relative;
  align-self: center;
  min-height: 280px;
  display: grid;
  place-items: center;
}
.rings {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  border: 1px solid rgba(46, 196, 182, 0.2);
  animation: spin 28s linear infinite;
}
.rings::before,
.rings::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(74, 144, 200, 0.28);
}
.rings::before { inset: 12%; }
.rings::after { inset: 26%; border-style: solid; border-color: rgba(255, 122, 69, 0.22); }
.rings .dot {
  position: absolute;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--orbit);
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px rgba(46, 196, 182, 0.7);
}
.rings .dot.b {
  top: auto; bottom: 18%; left: 8%;
  background: var(--link);
  box-shadow: 0 0 12px rgba(255, 122, 69, 0.6);
}
.rings .dot.c {
  top: 40%; left: auto; right: 4%;
  background: var(--sky);
}
@keyframes spin { to { transform: rotate(360deg); } }
.orbit-media {
  position: relative;
  z-index: 2;
  width: min(100%, 420px);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}
.orbit-media img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.sec { padding: 2.35rem 0; }
.head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}
.head h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.head p { margin: 0; color: var(--mute); max-width: 34rem; font-size: 0.95rem; }
.tag {
  font-family: var(--font-meta);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--orbit);
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

/* nodes — download */
.nodes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}
.node {
  background: var(--lift);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1rem 1rem;
  text-align: center;
  box-shadow: 0 10px 24px rgba(0,0,0,0.18);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.node:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 196, 182, 0.4);
}
.node .orb {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 0.7rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-meta);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--orbit);
  border: 2px solid rgba(46, 196, 182, 0.45);
  background: rgba(46, 196, 182, 0.08);
}
.node .os {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}
.node .meta { margin: 0; font-size: 0.84rem; color: var(--mute); }
.node .meta b { color: var(--ink); }
.node .btn { margin-top: 0.85rem; width: 100%; }

/* rings features */
.layers {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
}
.layer {
  background: linear-gradient(180deg, var(--lift), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.05rem 0.9rem;
}
.layer .ico {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid rgba(46, 196, 182, 0.35);
  color: var(--orbit);
  font-family: var(--font-display);
  font-weight: 800;
  margin-bottom: 0.65rem;
  background: rgba(46, 196, 182, 0.08);
}
.layer h3 { font-size: 0.98rem; margin-bottom: 0.3rem; }
.layer p { margin: 0; font-size: 0.86rem; color: var(--mute); }

/* chain solution */
.chain {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 1.3rem;
  align-items: center;
}
.brief {
  background: var(--lift);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  padding: 1.4rem 1.3rem;
  box-shadow: var(--shadow);
}
.brief h2 { font-size: clamp(1.35rem, 2.2vw, 1.8rem); }
.brief .bullets {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.5rem;
}
.brief .bullets li {
  padding-left: 1.15rem;
  position: relative;
  color: var(--mute);
  font-size: 0.93rem;
}
.brief .bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--link);
}
.gallery { display: grid; gap: 0.75rem; }
.gallery .shot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 10px 24px rgba(0,0,0,0.2);
}
.gallery .duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* trust */
.trust {
  text-align: center;
  background: linear-gradient(180deg, rgba(26,51,72,0.9), rgba(19,37,54,0.95));
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.75rem 1.15rem 1.35rem;
}
.trust .big {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.85rem);
  margin-bottom: 0.35rem;
}
.trust .big em {
  font-style: normal;
  color: var(--orbit);
  font-size: 1.22em;
}
.trust .sub { color: var(--mute); margin-bottom: 1rem; }
.brands {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.05rem;
}
.brands span {
  padding: 0.42rem 0.85rem;
  border-radius: 999px;
  background: rgba(13, 26, 40, 0.55);
  border: 1px solid var(--line);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--mute);
}
.trust .shot {
  max-width: 720px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

/* news + help */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1rem;
}
.panel {
  background: var(--lift);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.15rem 0.9rem;
}
.panel-h {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}
.panel-h a { color: var(--orbit); font-size: 0.86rem; font-weight: 700; }
.pulse {
  display: grid;
  grid-template-columns: 3.3rem 1fr;
  gap: 0.7rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}
.pulse:last-child { border-bottom: 0; }
.pulse time {
  font-family: var(--font-meta);
  font-size: 0.72rem;
  color: var(--orbit);
  padding-top: 0.15rem;
}
.pulse h3 { font-size: 0.96rem; margin-bottom: 0.2rem; }
.pulse p { margin: 0; font-size: 0.85rem; color: var(--mute); }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.5rem 0;
}
.faq details:last-child { border-bottom: 0; }
.faq summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  float: right;
  color: var(--orbit);
}
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--mute); font-size: 0.9rem; margin: 0.4rem 0 0.5rem; }
.faq a { color: var(--orbit); text-decoration: underline; text-underline-offset: 2px; }

/* CTA */
.reconnect {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.2rem;
  align-items: center;
  background: linear-gradient(135deg, #123042, #1a4a4a 50%, #1f6b62);
  color: #fff;
  border-radius: calc(var(--radius) + 6px);
  padding: 1.5rem 1.4rem;
  margin: 0.4rem 0 2rem;
  border: 1px solid rgba(46, 196, 182, 0.25);
  box-shadow: var(--shadow);
}
.reconnect h2 { color: #fff; font-size: clamp(1.3rem, 2.2vw, 1.7rem); }
.reconnect .lead { color: rgba(232, 241, 248, 0.85); }
.gains {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: grid;
  gap: 0.35rem;
}
.gains li {
  padding-left: 1rem;
  position: relative;
  font-size: 0.93rem;
  color: rgba(232, 241, 248, 0.92);
}
.gains li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--link);
}
.reconnect .btn-orbit {
  background: #fff;
  color: #123042;
  box-shadow: none;
}
.reconnect .btn-ring {
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.reconnect .shot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.2);
}

.page-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.3rem;
  align-items: center;
  padding: 1.3rem 0 1.8rem;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 1.15rem 0 2rem;
  color: var(--mute);
  font-size: 0.86rem;
  border-top: 1px solid var(--line);
}
.foot nav { display: flex; gap: 1rem; }
.foot a:hover { color: var(--orbit); }

@media (max-width: 960px) {
  .hub, .chain, .split, .reconnect, .page-hero { grid-template-columns: 1fr; }
  .nodes { grid-template-columns: 1fr 1fr; }
  .layers { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
  .rings { display: none; }
}
@media (max-width: 560px) {
  .nodes, .layers, .reqs, .gallery .duo { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .btn { width: 100%; }
}

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

/* Hero image hard rules — end of file */
.hub,
.page-hero {
  align-items: center;
}
.hub .orbit-media,
.page-hero .orbit-media,
.reconnect .shot,
.gallery .shot,
.trust .shot {
  align-self: center;
  height: auto;
  padding: 0;
  margin-top: 0;
  margin-bottom: 0;
  overflow: hidden;
  transform: none;
}
.hub .orbit-media img,
.page-hero .orbit-media img,
.reconnect .shot img,
.gallery .shot img,
.trust .shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 0;
  clip-path: none;
  transform: none;
}