:root {
  --ink: #0b1016;
  --ink-2: #121923;
  --paper: #f5f6f8;
  --white: #ffffff;
  --muted: #66717d;
  --line: #dce1e6;
  --teal: #25c7ca;
  --teal-dark: #087f83;
  --coral: #ef5b5b;
  --orange: #f29b38;
  --blue: #3975df;
  --safe-inline: max(20px, env(safe-area-inset-left));
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--paper); }
button, input, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
svg { width: 19px; height: 19px; stroke-width: 1.8; }

.site-nav {
  position: fixed;
  z-index: 50;
  top: 12px;
  left: 12px;
  right: 12px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px 0 12px;
  color: #edf4f5;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px;
  background: rgba(11,16,22,.72);
  backdrop-filter: blur(18px) saturate(130%);
  transition: background .25s ease, transform .25s ease;
}

.site-nav.scrolled { background: rgba(11,16,22,.94); }
.brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.brand img { width: 82px; height: auto; border-radius: 0; }
.brand span { display: flex; align-items: baseline; gap: 7px; }
.brand strong { font-size: 15px; font-weight: 800; letter-spacing: 0; }
.brand small { color: #95a4b1; font-size: 11px; }
.site-nav nav { display: none; }
.nav-download {
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 12px;
  border-radius: 8px;
  background: var(--teal);
  color: #061113;
  font-size: 13px;
  font-weight: 750;
}
.nav-download svg { width: 17px; }

.hero {
  position: relative;
  min-height: 82svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 116px var(--safe-inline) 54px;
  color: #f1f7f8;
  background: var(--ink);
}

.hero-art { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-art::after { content: ""; position: absolute; inset: 0; background: rgba(11,16,22,.38); }
.hero-art img {
  position: absolute;
  width: 500px;
  max-width: none;
  top: 90px;
  right: -210px;
  opacity: .22;
  filter: saturate(.86);
  animation: heroFloat 7s ease-in-out infinite;
}
.scan-line {
  position: absolute;
  z-index: 2;
  top: 5%;
  right: 0;
  width: 62%;
  height: 1px;
  background: rgba(37,199,202,.7);
  box-shadow: 0 0 18px rgba(37,199,202,.55);
  animation: scan 4.8s linear infinite;
}
.signal { position: absolute; z-index: 2; width: 6px; height: 6px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 0 rgba(239,91,91,.4); animation: pulse 2.8s ease-out infinite; }
.signal-a { top: 31%; right: 29%; }
.signal-b { top: 49%; right: 14%; animation-delay: .9s; background: var(--teal); }
.signal-c { top: 68%; right: 35%; animation-delay: 1.7s; background: var(--orange); }

.hero-content { position: relative; z-index: 3; width: min(680px, 100%); }
.eyebrow { margin: 0 0 18px; display: flex; align-items: center; gap: 10px; color: #9fb1bd; font-size: 11px; font-weight: 750; letter-spacing: 0; }
.eyebrow > span { width: 27px; height: 2px; background: var(--teal); }
.eyebrow.dark { color: #67737e; }
.hero h1 { margin: 0; font-size: 68px; line-height: .92; font-weight: 850; letter-spacing: 0; }
.hero-cn { margin: 10px 0 0; color: var(--teal); font-size: 22px; font-weight: 700; }
.hero-copy { margin: 24px 0 0; max-width: 600px; color: #b6c2ca; font-size: 17px; line-height: 1.72; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 750;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--teal); color: #061113; }
.button-primary:hover { background: #38d6d9; }
.button-ghost { border-color: #3c4651; color: #e2eaed; background: rgba(255,255,255,.04); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 27px; color: #8fa0ac; font-size: 11px; }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta svg { width: 15px; height: 15px; color: var(--teal); }

.signal-strip {
  min-height: 118px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #151d26;
  color: #eef5f6;
  border-top: 1px solid #26313b;
}
.signal-strip > div { min-height: 59px; display: flex; align-items: center; gap: 7px; padding: 12px 18px; border-right: 1px solid #26313b; border-bottom: 1px solid #26313b; }
.signal-strip small { color: #71818e; font-size: 9px; }
.signal-strip strong { font-size: 10px; font-weight: 750; }
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: #5ed489; box-shadow: 0 0 0 5px rgba(94,212,137,.1); }

.section { padding: 78px var(--safe-inline); }
.light-band { background: var(--paper); }
.dark-band { background: #101720; color: #edf4f5; }
.section-head { max-width: 720px; }
.section-head h2, .experience-copy h2, .release-copy h2 { margin: 0; font-size: 38px; line-height: 1.13; letter-spacing: 0; }
.section-head > p:last-child, .experience-copy > p:last-of-type, .release-copy > p:last-child { margin: 20px 0 0; max-width: 600px; color: var(--muted); font-size: 16px; line-height: 1.75; }

.feature-grid { display: grid; gap: 12px; margin-top: 44px; }
.feature-card { position: relative; min-height: 310px; padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); overflow: hidden; }
.feature-card::after { content: ""; position: absolute; right: 0; bottom: 0; width: 56px; height: 3px; background: var(--teal); transition: width .3s ease; }
.feature-card:nth-child(2)::after { background: var(--orange); }
.feature-card:nth-child(3)::after { background: var(--coral); }
.feature-card:nth-child(4)::after { background: #283545; }
.feature-card:hover::after { width: 100%; }
.feature-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 8px; color: #071316; }
.feature-icon.teal { background: #a9eff0; }
.feature-icon.orange { background: #ffd7aa; }
.feature-icon.coral { background: #ffc2c2; }
.feature-icon.ink { background: #d8e0e8; }
.feature-index { position: absolute; top: 25px; right: 24px; color: #b7bec5; font-size: 12px; font-weight: 750; }
.feature-card h3 { margin: 34px 0 10px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.micro-status, .terminal-line { position: absolute; left: 24px; right: 24px; bottom: 24px; height: 36px; display: flex; align-items: center; gap: 8px; padding: 0 11px; border: 1px solid #dfe6e7; border-radius: 6px; color: #587078; background: #f6faf9; font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.micro-status span { width: 6px; height: 6px; border-radius: 50%; background: #36ba70; }
.kernel-row { position: absolute; left: 24px; right: 24px; bottom: 24px; display: grid; grid-template-columns: repeat(5,1fr); gap: 4px; }
.kernel-row b { padding: 10px 2px; text-align: center; border-radius: 5px; background: #fff5e9; color: #9b5a15; font-size: 10px; }
.config-bars { position: absolute; left: 24px; right: 24px; bottom: 26px; display: grid; gap: 7px; }
.config-bars i { height: 5px; display: block; background: var(--coral); }
.config-bars i:nth-child(2) { background: var(--teal); }
.config-bars i:nth-child(3) { background: #2d3948; }
.terminal-line { background: #121923; color: #9db3c1; border-color: #263342; }
.terminal-line span { color: var(--teal); font-size: 16px; }
.terminal-line i { margin-left: auto; width: 7px; height: 13px; background: var(--teal); animation: blink 1s steps(1) infinite; }

.experience-copy > p:last-of-type { color: #9aabb7; }
.check-list { display: grid; gap: 12px; margin: 28px 0 0; padding: 0; list-style: none; color: #c7d2d8; font-size: 14px; }
.check-list li { display: flex; align-items: center; gap: 10px; }
.check-list svg { width: 17px; color: var(--teal); }
.radar-stage { position: relative; aspect-ratio: 1; margin-top: 45px; overflow: hidden; border: 1px solid #293746; border-radius: 8px; background: #111a23; }
.radar-stage > img { width: 100%; height: 100%; object-fit: cover; opacity: .61; filter: saturate(.5) contrast(1.15); }
.radar-stage::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(37,199,202,.15); pointer-events: none; }
.radar-sweep { position: absolute; z-index: 2; left: 50%; top: 50%; width: 46%; height: 2px; transform-origin: left center; background: rgba(37,199,202,.75); box-shadow: 0 0 18px rgba(37,199,202,.5); animation: radar 6s linear infinite; }
.radar-point { position: absolute; z-index: 3; width: 12px; height: 12px; padding: 0; border: 2px solid #fff; border-radius: 50%; cursor: pointer; animation: point 2.4s ease-in-out infinite; }
.radar-point.ally { background: var(--teal); }
.radar-point.enemy { background: var(--coral); }
.point-a { left: 32%; top: 37%; }
.point-b { left: 61%; top: 57%; animation-delay: .5s; }
.point-c { left: 69%; top: 26%; animation-delay: 1s; }
.point-d { left: 42%; top: 71%; animation-delay: 1.4s; }
.radar-top, .radar-bottom { position: absolute; z-index: 4; left: 12px; right: 12px; display: flex; justify-content: space-between; align-items: center; color: #e9f2f4; font: 700 9px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.radar-top { top: 12px; }
.radar-bottom { bottom: 12px; }
.radar-top strong { display: flex; align-items: center; gap: 6px; color: #91a5b1; }
.radar-top i { width: 6px; height: 6px; border-radius: 50%; background: #62dd8f; }

.workflow-band { background: #eef1f3; }
.workflow { position: relative; display: grid; margin-top: 42px; border-top: 1px solid #ccd3d9; }
.flow-item { position: relative; min-height: 190px; padding: 26px 4px 24px 58px; border-bottom: 1px solid #ccd3d9; }
.flow-item > span { position: absolute; left: 0; top: 28px; color: #98a3ad; font-size: 11px; }
.flow-item > svg { width: 29px; height: 29px; color: var(--teal-dark); }
.flow-item h3 { margin: 27px 0 7px; font-size: 19px; }
.flow-item p { margin: 0; color: var(--muted); font-size: 13px; }

.release-band { background: #111820; color: #eff5f6; }
.release-copy > p:last-child { color: #9dabb6; }
.release-panel { display: grid; gap: 20px; margin-top: 42px; padding: 24px; border: 1px solid #2d3944; border-radius: 8px; background: #171f28; }
.release-icon img { width: 108px; height: auto; border-radius: 0; }
.release-title { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; color: #8798a5; font-size: 11px; }
.release-title b { padding: 5px 8px; border-radius: 5px; background: rgba(37,199,202,.13); color: #73e1e3; }
.release-main h3 { margin: 12px 0 8px; font-size: 24px; }
.release-main > p { margin: 0; color: #95a6b1; font-size: 13px; line-height: 1.65; white-space: pre-line; }
.release-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin-top: 23px; }
.release-stats span { min-width: 0; }
.release-stats small, .release-stats strong { display: block; }
.release-stats small { color: #72838f; font-size: 9px; }
.release-stats strong { margin-top: 5px; overflow: hidden; color: #d9e4e7; font-size: 11px; text-overflow: ellipsis; }
.release-download { width: 100%; align-self: end; }
.release-download.disabled { pointer-events: none; opacity: .42; }

.faq-band { background: var(--paper); }
.faq-list { margin-top: 38px; border-top: 1px solid #cfd6dc; }
.faq-list details { border-bottom: 1px solid #cfd6dc; }
.faq-list summary { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 14px; list-style: none; cursor: pointer; font-size: 15px; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary svg { flex: 0 0 auto; transition: transform .2s ease; }
.faq-list details[open] summary svg { transform: rotate(45deg); }
.faq-list details p { margin: -5px 34px 24px 0; color: var(--muted); font-size: 14px; line-height: 1.75; }

footer { min-height: 250px; display: flex; flex-direction: column; justify-content: center; gap: 20px; padding: 55px var(--safe-inline); color: #d8e2e5; background: #0b1016; }
.footer-brand img { width: 118px; height: auto; }
footer p { margin: 0; color: #8798a5; font-size: 13px; }
footer > span { color: #53636f; font-size: 11px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@keyframes heroFloat { 0%,100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-12px) rotate(1deg); } }
@keyframes scan { 0% { transform: translateY(0); opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { transform: translateY(74svh); opacity: 0; } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(239,91,91,.45); } 70%,100% { box-shadow: 0 0 0 16px rgba(239,91,91,0); } }
@keyframes blink { 0%,48% { opacity: 1; } 49%,100% { opacity: 0; } }
@keyframes radar { to { transform: rotate(360deg); } }
@keyframes point { 0%,100% { transform: scale(1); } 50% { transform: scale(1.35); } }

@media (min-width: 720px) {
  .site-nav { left: 22px; right: 22px; top: 18px; height: 64px; padding: 0 12px 0 14px; }
  .site-nav nav { display: flex; gap: 26px; margin-left: auto; margin-right: 24px; color: #9dabb4; font-size: 12px; }
  .site-nav nav a:hover { color: #fff; }
  .hero { min-height: 84svh; padding: 150px 8vw 72px; align-items: center; }
  .hero-art img { width: 690px; right: -70px; top: 160px; opacity: .24; }
  .hero h1 { font-size: 104px; }
  .hero-copy { font-size: 18px; }
  .signal-strip { min-height: 72px; grid-template-columns: repeat(4,1fr); }
  .signal-strip > div { min-height: 72px; justify-content: center; border-bottom: 0; }
  .section { padding: 110px 8vw; }
  .section-head h2, .experience-copy h2, .release-copy h2 { font-size: 52px; }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .dark-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 7vw; align-items: center; }
  .radar-stage { margin-top: 0; }
  .workflow { grid-template-columns: repeat(4,1fr); border-bottom: 1px solid #ccd3d9; }
  .flow-item { min-height: 250px; padding: 30px 18px; border-bottom: 0; border-right: 1px solid #ccd3d9; }
  .flow-item:last-child { border-right: 0; }
  .flow-item > span { left: 18px; top: auto; bottom: 22px; }
  .release-panel { grid-template-columns: 118px 1fr 190px; align-items: center; padding: 30px; }
  .release-download { width: auto; }
  footer { padding-left: 8vw; padding-right: 8vw; }
}

@media (min-width: 1120px) {
  .hero-content { margin-left: 4vw; }
  .hero-art img { width: 760px; right: 2vw; top: 160px; }
  .feature-grid { grid-template-columns: repeat(4,1fr); }
  .feature-card { min-height: 350px; }
  .dark-band { grid-template-columns: .72fr 1fr; padding-left: 12vw; padding-right: 12vw; }
  .release-band { display: grid; grid-template-columns: .6fr 1.4fr; gap: 6vw; align-items: center; }
  .release-panel { margin-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}