/**
 * 验机记录 · 全自动云端备份宣传区（白底）
 * Continuum Archive visual system
 */
.icb {
  --icb-blue: #0052d9;
  --icb-cyan: #00a3ff;
  --icb-mint: #00b42a;
  padding: 92px 0 88px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 50% 55% at 92% 12%, rgba(0, 82, 217, 0.06), transparent 55%),
    radial-gradient(ellipse 40% 45% at 6% 90%, rgba(0, 163, 255, 0.05), transparent 50%),
    #ffffff;
  color: #1d2129;
}
.icb::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 82, 217, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 82, 217, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, #000 25%, transparent 78%);
  pointer-events: none;
  opacity: 0.7;
}
.icb > .container {
  position: relative;
  z-index: 1;
}
.icb-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px 56px;
  align-items: center;
}
.icb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #0052d9;
}
.icb-eyebrow i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--icb-cyan);
  box-shadow: 0 0 0 4px rgba(0, 163, 255, 0.18);
  animation: icb-pulse 2s ease-out infinite;
}
.icb-copy h2 {
  margin: 0 0 16px;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.18;
  color: #1d2129;
}
.icb-copy h2 em {
  font-style: normal;
  background: linear-gradient(120deg, #0052d9 0%, #00a3ff 55%, #14c8a8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.icb-lead {
  margin: 0 0 22px;
  font-size: 15.5px;
  line-height: 1.8;
  color: #86909c;
  max-width: 520px;
}
.icb-points {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.icb-points li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 13.5px;
  line-height: 1.65;
  color: #4e5969;
}
.icb-points li::before {
  content: "";
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border-radius: 5px;
  border: 1px solid rgba(0, 82, 217, 0.22);
  background-color: #e8f3ff;
  background-image:
    linear-gradient(#0052d9, #0052d9),
    linear-gradient(#0052d9, #0052d9);
  background-size: 8px 2px, 2px 5px;
  background-position: 4px 8px, 10px 5px;
  background-repeat: no-repeat;
}
.icb-points strong {
  display: block;
  color: #1d2129;
  font-weight: 700;
  margin-bottom: 2px;
}
.icb-points span {
  color: #86909c;
}
.icb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.icb-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0052d9, #1a7dff);
  color: #fff !important;
  text-decoration: none !important;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 12px 28px rgba(0, 82, 217, 0.22);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.icb-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(0, 82, 217, 0.3);
}
.icb-link {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid rgba(0, 82, 217, 0.22);
  color: #0052d9 !important;
  text-decoration: none !important;
  font-size: 14px;
  font-weight: 600;
  background: #fff;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.icb-link:hover {
  background: #e8f3ff;
  border-color: rgba(0, 82, 217, 0.4);
}
.icb-footnote {
  margin: 18px 0 0;
  font-size: 12px;
  color: #86909c;
  letter-spacing: 0.02em;
}

/* —— Animation stage —— */
.icb-stage {
  position: relative;
  min-height: 420px;
  border-radius: 22px;
  border: 1px solid rgba(0, 82, 217, 0.12);
  background:
    linear-gradient(160deg, #ffffff 0%, #f5f8ff 100%);
  box-shadow:
    0 24px 56px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  overflow: hidden;
}
.icb-stage-glow {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.35;
  pointer-events: none;
}
.icb-stage-glow.g1 {
  top: -40px;
  right: -30px;
  background: rgba(0, 82, 217, 0.28);
  animation: icb-drift 8s ease-in-out infinite alternate;
}
.icb-stage-glow.g2 {
  bottom: -50px;
  left: -20px;
  background: rgba(0, 163, 255, 0.22);
  animation: icb-drift 10s ease-in-out infinite alternate-reverse;
}
.icb-stage-inner {
  position: relative;
  z-index: 1;
  padding: 28px 24px 24px;
  height: 100%;
  min-height: 420px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
}
.icb-stage-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.icb-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #0052d9;
  background: #e8f3ff;
  border: 1px solid rgba(0, 82, 217, 0.16);
}
.icb-chip em {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--icb-mint);
  box-shadow: 0 0 0 4px rgba(0, 180, 42, 0.18);
  animation: icb-pulse 1.6s ease-out infinite;
  font-style: normal;
}
.icb-latency {
  font-size: 11px;
  color: #86909c;
  font-variant-numeric: tabular-nums;
}
.icb-pipeline {
  position: relative;
  display: grid;
  grid-template-columns: 92px 1fr 108px;
  gap: 8px;
  align-items: center;
  min-height: 220px;
}
.icb-device {
  width: 78px;
  height: 140px;
  margin: 0 auto;
  border-radius: 14px;
  border: 2px solid rgba(0, 82, 217, 0.22);
  background: linear-gradient(180deg, #f7faff, #e8f3ff);
  position: relative;
  box-shadow: 0 14px 32px rgba(0, 82, 217, 0.12);
}
.icb-device::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 4px;
  border-radius: 4px;
  background: rgba(0, 82, 217, 0.2);
}
.icb-device-scan {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 28%;
  top: 18%;
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(0, 163, 255, 0.05), rgba(0, 82, 217, 0.28), rgba(0, 163, 255, 0.05));
  animation: icb-scan 2.8s ease-in-out infinite;
}
.icb-device-lines {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 16px;
  display: grid;
  gap: 6px;
}
.icb-device-lines i {
  display: block;
  height: 4px;
  border-radius: 2px;
  background: rgba(0, 82, 217, 0.18);
}
.icb-device-lines i:nth-child(1) { width: 88%; }
.icb-device-lines i:nth-child(2) { width: 64%; }
.icb-device-lines i:nth-child(3) { width: 76%; }

.icb-beam {
  position: relative;
  height: 4px;
  border-radius: 999px;
  background: rgba(0, 82, 217, 0.1);
  overflow: visible;
}
.icb-beam::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, rgba(0, 163, 255, 0.9), transparent);
  transform: translateX(-100%);
  animation: icb-beam 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
.icb-packet {
  position: absolute;
  top: 50%;
  left: 0;
  width: 34px;
  height: 22px;
  margin-top: -11px;
  border-radius: 6px;
  background: linear-gradient(135deg, #00a3ff, #0052d9);
  box-shadow: 0 6px 18px rgba(0, 82, 217, 0.35);
  animation: icb-packet 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  display: grid;
  place-items: center;
}
.icb-packet span {
  width: 14px;
  height: 2px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 0 rgba(255, 255, 255, 0.55), 0 -4px 0 rgba(255, 255, 255, 0.55);
}
.icb-vault {
  justify-self: end;
  width: 100px;
  height: 110px;
  border-radius: 16px;
  border: 1px solid rgba(0, 82, 217, 0.16);
  background:
    radial-gradient(circle at 50% 30%, rgba(0, 163, 255, 0.12), transparent 55%),
    linear-gradient(180deg, #ffffff, #eef4ff);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 14px 28px rgba(0, 82, 217, 0.1);
}
.icb-vault strong {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0052d9;
}
.icb-vault-ring {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid rgba(0, 163, 255, 0.28);
  position: relative;
}
.icb-vault-ring::before,
.icb-vault-ring::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--icb-cyan);
  animation: icb-spin 2.2s linear infinite;
}
.icb-vault-ring::after {
  inset: 12px;
  border-top-color: var(--icb-mint);
  animation-duration: 1.4s;
  animation-direction: reverse;
}
.icb-history {
  display: grid;
  gap: 8px;
}
.icb-hist-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(0, 82, 217, 0.1);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
  transform: translateY(8px);
  opacity: 0;
  animation: icb-rise 0.7s ease forwards;
}
.icb-hist-card:nth-child(1) { animation-delay: 0.35s; }
.icb-hist-card:nth-child(2) { animation-delay: 0.7s; }
.icb-hist-card:nth-child(3) { animation-delay: 1.05s; }
.icb-hist-card strong {
  display: block;
  font-size: 12.5px;
  color: #1d2129;
}
.icb-hist-card span {
  font-size: 11px;
  color: #86909c;
}
.icb-hist-card b {
  font-size: 12px;
  font-weight: 700;
  color: var(--icb-mint);
}
.icb-hist-card.is-warn b { color: #ff7d00; }

.icb-orbit {
  position: absolute;
  inset: 18% 12% 28% 12%;
  border: 1px dashed rgba(0, 82, 217, 0.12);
  border-radius: 50%;
  pointer-events: none;
  animation: icb-spin 28s linear infinite;
}
.icb-orbit i {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #0052d9;
  top: 0;
  left: 50%;
  box-shadow: 0 0 10px rgba(0, 82, 217, 0.45);
}

@keyframes icb-pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 163, 255, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(0, 163, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 163, 255, 0); }
}
@keyframes icb-scan {
  0%, 100% { top: 18%; opacity: 0.45; }
  50% { top: 52%; opacity: 1; }
}
@keyframes icb-beam {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
@keyframes icb-packet {
  0% { left: 0; opacity: 0; transform: scale(0.8); }
  12% { opacity: 1; transform: scale(1); }
  88% { opacity: 1; }
  100% { left: calc(100% - 34px); opacity: 0; transform: scale(0.85); }
}
@keyframes icb-spin {
  to { transform: rotate(360deg); }
}
@keyframes icb-rise {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes icb-drift {
  from { transform: translate(0, 0); }
  to { transform: translate(-18px, 12px); }
}

@media (prefers-reduced-motion: reduce) {
  .icb-device-scan,
  .icb-beam::before,
  .icb-packet,
  .icb-vault-ring::before,
  .icb-vault-ring::after,
  .icb-orbit,
  .icb-chip em,
  .icb-eyebrow i,
  .icb-stage-glow {
    animation: none !important;
  }
  .icb-hist-card {
    opacity: 1;
    transform: none;
    animation: none;
  }
  .icb-packet { left: 55%; opacity: 1; }
}

@media (max-width: 960px) {
  .icb { padding: 72px 0 64px; }
  .icb-inner { grid-template-columns: 1fr; gap: 28px; }
  .icb-stage { min-height: 380px; }
  .icb-stage-inner { min-height: 380px; }
}
@media (max-width: 560px) {
  .icb-pipeline { grid-template-columns: 70px 1fr 86px; }
  .icb-device { width: 62px; height: 118px; }
  .icb-vault { width: 82px; height: 96px; }
}