@import url("https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=IBM+Plex+Sans+SC:wght@400;500;600;700&display=swap");

:root {
  --bg-0: #060f18;
  --bg-1: #0c2132;
  --bg-2: #143650;
  --panel: rgba(11, 26, 41, 0.78);
  --panel-soft: rgba(15, 35, 54, 0.66);
  --line: rgba(128, 179, 224, 0.38);
  --text: #eef6ff;
  --muted: #9cb7cf;
  --cyan: #55dcff;
  --mint: #6ef3c6;
  --amber: #ffc17a;
  --danger: #ff8f8f;
  --ok: #98f7c7;
  --radius: 18px;
  --radius-lg: 24px;
  --shadow-strong: 0 30px 70px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Sora", "IBM Plex Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 18%, rgba(85, 220, 255, 0.18), transparent 34%),
    radial-gradient(circle at 82% 20%, rgba(110, 243, 198, 0.14), transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(255, 193, 122, 0.12), transparent 40%),
    linear-gradient(168deg, var(--bg-0), var(--bg-1) 48%, var(--bg-2));
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -3;
  background-image:
    linear-gradient(rgba(141, 188, 228, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141, 188, 228, 0.13) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 36%, transparent 90%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
  background: radial-gradient(circle at center, transparent 20%, rgba(0, 0, 0, 0.52) 100%);
}

.ambient {
  position: fixed;
  border-radius: 999px;
  filter: blur(12px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.34;
  animation: float 12s ease-in-out infinite;
}

.ambient-a {
  width: 360px;
  height: 360px;
  left: -120px;
  top: 54px;
  background: rgba(85, 220, 255, 0.34);
}

.ambient-b {
  width: 450px;
  height: 450px;
  right: -140px;
  top: -80px;
  background: rgba(110, 243, 198, 0.26);
  animation-delay: -4s;
}

.ambient-c {
  width: 310px;
  height: 310px;
  right: 18%;
  bottom: -110px;
  background: rgba(255, 193, 122, 0.22);
  animation-delay: -8s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-22px);
  }
}

.site-shell {
  width: min(1220px, 92%);
  margin: 0 auto;
}

.site-nav {
  position: sticky;
  top: 14px;
  z-index: 50;
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(10, 26, 41, 0.78);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  white-space: nowrap;
}

.brand-mark {
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  color: #052236;
  background: linear-gradient(140deg, var(--cyan), var(--mint));
  box-shadow: 0 8px 24px rgba(85, 220, 255, 0.44);
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.35px;
}

.brand-text span {
  background: linear-gradient(135deg, var(--cyan), var(--mint));
  -webkit-background-clip: text;
  color: transparent;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-link {
  color: #d6e8fa;
  text-decoration: none;
  font-size: 13px;
  padding: 7px 10px;
  border-radius: 9px;
  border: 1px solid transparent;
  transition: border-color 0.24s ease, color 0.24s ease, transform 0.24s ease;
}

.nav-link:hover {
  color: #ffffff;
  border-color: rgba(151, 208, 255, 0.45);
  transform: translateY(-1px);
}

.nav-link.is-main {
  border-color: rgba(151, 208, 255, 0.34);
  background: rgba(18, 43, 63, 0.72);
}

.main {
  padding: 28px 0 42px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid rgba(136, 203, 255, 0.52);
  color: #bdeeff;
  background: rgba(46, 91, 122, 0.36);
}

.kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 12px var(--mint);
}

h1,
h2,
h3,
h4,
p,
ul {
  margin: 0;
}

h1 {
  margin-top: 12px;
  font-size: clamp(36px, 5.8vw, 62px);
  line-height: 1.07;
  letter-spacing: -0.5px;
}

h1 .grad {
  background: linear-gradient(128deg, var(--cyan), var(--mint));
  -webkit-background-clip: text;
  color: transparent;
}

h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.15;
}

h3 {
  font-size: 20px;
  line-height: 1.3;
}

p {
  color: var(--muted);
  line-height: 1.76;
}

.hero {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 18px;
  perspective: 1400px;
}

.card {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(164deg, rgba(23, 48, 74, 0.84), rgba(8, 18, 30, 0.82));
  box-shadow: var(--shadow-strong);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(138deg, rgba(255, 255, 255, 0.14), transparent 34%);
}

.card::after {
  content: "";
  position: absolute;
  inset: auto 10px -12px 10px;
  height: 12px;
  border-radius: 0 0 13px 13px;
  background: rgba(0, 0, 0, 0.3);
  filter: blur(8px);
  transform: translateZ(-6px);
}

.pad-lg {
  padding: 26px;
}

.pad-md {
  padding: 20px;
}

[data-tilt] {
  transform-style: preserve-3d;
  transition: transform 0.34s ease, box-shadow 0.34s ease, filter 0.34s ease;
}

[data-tilt]:hover {
  filter: brightness(1.03);
}

.btn-row {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  color: #e8f6ff;
  border: 1px solid rgba(149, 198, 237, 0.46);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  background: rgba(16, 40, 61, 0.7);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: rgba(202, 230, 255, 0.7);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.32);
}

.btn-primary {
  border: 0;
  color: #041c2c;
  background: linear-gradient(130deg, var(--cyan), var(--mint));
}

.btn-primary:hover {
  box-shadow: 0 14px 28px rgba(85, 220, 255, 0.34);
}

.metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid rgba(146, 196, 238, 0.34);
  background: rgba(8, 21, 34, 0.56);
}

.metric strong {
  display: block;
  font-size: 19px;
  color: #96f8d1;
}

.metric span {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  color: var(--muted);
}

.route-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.route-item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 13px;
  border-radius: 12px;
  border: 1px solid rgba(159, 208, 245, 0.33);
  background: rgba(10, 28, 44, 0.64);
  text-decoration: none;
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.route-item:hover {
  transform: translateY(-2px);
  border-color: rgba(204, 229, 255, 0.72);
}

.route-item small {
  font-size: 12px;
  letter-spacing: 0.2px;
  color: #bfdaf2;
}

.route-item strong {
  font-size: 16px;
  color: #ffffff;
}

.route-item code {
  font-family: "Consolas", "Cascadia Code", monospace;
  color: #9cf2ff;
  font-size: 13px;
}

.route-note {
  margin-top: 12px;
  font-size: 13px;
  color: #c5d8eb;
}

.scene {
  min-height: 100%;
  display: grid;
  align-content: start;
  gap: 14px;
}

.scene-title {
  font-size: 13px;
  color: #c5dbf4;
  letter-spacing: 0.45px;
}

.cube-wrap {
  display: flex;
  justify-content: center;
  padding-top: 6px;
  perspective: 950px;
}

.cube {
  width: 132px;
  height: 132px;
  position: relative;
  transform-style: preserve-3d;
  animation: cube-spin 12s linear infinite;
}

@keyframes cube-spin {
  0% {
    transform: rotateX(-18deg) rotateY(0deg);
  }
  100% {
    transform: rotateX(-18deg) rotateY(360deg);
  }
}

.face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  border: 1px solid rgba(188, 223, 255, 0.55);
  background: linear-gradient(155deg, rgba(31, 88, 131, 0.82), rgba(9, 19, 32, 0.82));
  font-size: 13px;
  color: #def3ff;
  text-shadow: 0 0 14px rgba(85, 220, 255, 0.5);
  box-shadow: inset 0 0 24px rgba(85, 220, 255, 0.17), 0 10px 20px rgba(0, 0, 0, 0.34);
}

.face-front { transform: translateZ(66px); }
.face-back { transform: rotateY(180deg) translateZ(66px); }
.face-right { transform: rotateY(90deg) translateZ(66px); }
.face-left { transform: rotateY(-90deg) translateZ(66px); }
.face-top { transform: rotateX(90deg) translateZ(66px); }
.face-bottom { transform: rotateX(-90deg) translateZ(66px); }

.node-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.node {
  border-radius: 12px;
  border: 1px solid rgba(145, 193, 232, 0.34);
  background: rgba(12, 28, 44, 0.66);
  padding: 11px;
  font-size: 12px;
  color: #d2e7fc;
  line-height: 1.5;
  text-align: center;
}

.scanline {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--mint), transparent);
  animation: scan 2.1s linear infinite;
}

@keyframes scan {
  from { transform: translateX(-18%); }
  to { transform: translateX(18%); }
}

.section {
  margin-top: 28px;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.section-head p {
  max-width: 780px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.chip {
  font-size: 12px;
  color: #d2e8ff;
  border: 1px solid rgba(140, 197, 239, 0.36);
  border-radius: 999px;
  background: rgba(12, 30, 47, 0.65);
  padding: 6px 10px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card-title {
  margin-bottom: 8px;
  font-size: 21px;
}

.list {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.78;
}

.list li + li {
  margin-top: 6px;
}

.endpoint-carousel {
  position: relative;
}

.endpoint-slides {
  position: relative;
  min-height: 168px;
}

.endpoint-slide {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  border: 1px solid rgba(150, 199, 237, 0.35);
  background: linear-gradient(160deg, rgba(22, 58, 87, 0.78), rgba(11, 25, 38, 0.88));
  padding: 18px;
  display: grid;
  gap: 10px;
  align-content: center;
  opacity: 0;
  transform: translateY(10px) scale(0.985);
  pointer-events: none;
  transition: opacity 0.34s ease, transform 0.34s ease;
}

.endpoint-slide.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.endpoint-method {
  width: fit-content;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.45px;
  border: 1px solid rgba(255, 193, 122, 0.55);
  color: #ffd8a6;
  background: rgba(255, 193, 122, 0.12);
}

.endpoint-path {
  font-family: "Consolas", "Cascadia Code", monospace;
  color: #99ecff;
  font-size: 20px;
}

.endpoint-dots {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 9px;
}

.endpoint-dot {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 50%;
  background: rgba(166, 209, 244, 0.35);
  cursor: pointer;
  transition: transform 0.24s ease, background 0.24s ease;
}

.endpoint-dot.active {
  background: var(--mint);
  transform: scale(1.2);
}

.notice-grid {
  display: grid;
  gap: 12px;
}

.notice {
  padding: 16px;
  border-radius: 14px;
  border: 1px solid rgba(148, 197, 233, 0.36);
  background: rgba(9, 24, 37, 0.7);
}

.notice-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.notice-date {
  font-size: 12px;
  color: #9cb8d1;
}

.notice h4 {
  font-size: 18px;
}

.flag-ok,
.flag-warn,
.flag-info {
  width: fit-content;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.2px;
}

.flag-ok {
  border: 1px solid rgba(152, 247, 199, 0.6);
  color: #b4ffd9;
  background: rgba(152, 247, 199, 0.15);
}

.flag-warn {
  border: 1px solid rgba(255, 193, 122, 0.6);
  color: #ffd9ab;
  background: rgba(255, 193, 122, 0.14);
}

.flag-info {
  border: 1px solid rgba(143, 212, 255, 0.6);
  color: #c0e8ff;
  background: rgba(143, 212, 255, 0.13);
}

.callout {
  margin-top: 14px;
  padding: 14px;
  border-radius: 12px;
  border: 1px dashed rgba(255, 193, 122, 0.48);
  background: rgba(255, 193, 122, 0.1);
  color: #ffd8aa;
  line-height: 1.7;
}

.doc-main {
  display: grid;
  gap: 14px;
}

.doc-card h3 {
  margin-bottom: 8px;
}

.doc-card p + p {
  margin-top: 10px;
}

.doc-meta {
  font-size: 13px;
  color: #c4d9ef;
}

.alert {
  border-left: 3px solid var(--amber);
  padding: 11px 12px;
  border-radius: 10px;
  background: rgba(255, 193, 122, 0.12);
  color: #ffdcb0;
  line-height: 1.68;
}

.footer {
  margin-top: 26px;
  border-top: 1px solid rgba(136, 179, 224, 0.34);
  padding: 24px 0 36px;
  color: var(--muted);
  font-size: 13px;
  line-height: 2;
}

.footer a {
  color: #d9edff;
  text-decoration: none;
  margin-right: 10px;
}

.footer a:hover {
  color: #ffffff;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
}

.reveal.done {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.56s ease, transform 0.56s ease;
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(1220px, 94%);
  }

  .site-nav {
    align-items: start;
    flex-direction: column;
  }

  .nav-group {
    justify-content: flex-start;
  }

  .main {
    padding: 20px 0 30px;
  }

  .pad-lg {
    padding: 20px;
  }

  .pad-md {
    padding: 16px;
  }

  .route-grid,
  .metrics,
  .grid-3,
  .grid-2,
  .node-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }

  .endpoint-path {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ambient,
  .cube,
  .scanline {
    animation: none !important;
  }

  [data-tilt],
  .endpoint-slide,
  .reveal.done {
    transition: none !important;
  }
}