:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --font-display: "SF Pro Display", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif;
  --bg: #fff;
  --bg-alt: #f5f5f7;
  --bg-elev: #fff;
  --bg-tinted: #fbfbfd;
  --bg-deep: #050a18;
  --bg-authority: #0a1f3d;
  --bg-authority-2: #061327;
  --text: #1d1d1f;
  --text-2: #424245;
  --text-3: #6e6e73;
  --text-4: #86868b;
  --text-5: #a1a1a6;
  --hairline: #0000000b;
  --hairline-strong: #00000014;
  --glass: #ffffffa6;
  --glass-strong: #ffffffdb;
  --glass-frosted: #ffffff80;
  --shadow-xs: 0 .5px 0 0 #fff9 inset, 0 1px 1.5px #0f172a0a;
  --shadow-sm: 0 .5px 0 0 #fff9 inset, 0 1px 2px #0f172a0a, 0 2px 6px -2px #0f172a0f;
  --shadow-md: 0 .5px 0 0 #ffffffb3 inset, 0 2px 4px #0f172a08, 0 8px 24px -6px #0f172a14, 0 24px 48px -16px #0f172a1a;
  --shadow-lg: 0 .5px 0 0 #fffc inset, 0 4px 12px #0f172a0a, 0 24px 60px -16px #0f172a24, 0 56px 120px -32px #0f172a2e;
  --shadow-xl: 0 .5px 0 0 #ffffffe6 inset, 0 8px 20px -8px #0f172a1a, 0 40px 80px -20px #0f172a2e, 0 80px 160px -40px #0f172a38;
  --shadow-brand: 0 .5px 0 0 #ffffff80 inset, 0 12px 32px -10px #0066cc59, 0 24px 60px -16px #06c3;
  --brand: #06c;
  --brand-deep: #003e80;
  --brand-light: #4ea3f5;
  --brand-soft: #eaf2fc;
  --brand-tint: #0066cc0f;
  --apple-blue: #0071e3;
  --apple-blue-hover: #0077ed;
  --green: #00875a;
  --amber: #b25e09;
  --red: #d70015;
  --radius-card: 24px;
}

*, :before, :after {
  box-sizing: border-box;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  letter-spacing: -.003em;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
}

input, textarea, select {
  color: inherit;
  font-family: inherit;
}

.tsa-h-1 {
  letter-spacing: -.026em;
  font-size: 64px;
  font-weight: 600;
  line-height: 1.05;
}

.tsa-h-2 {
  letter-spacing: -.022em;
  font-size: 48px;
  font-weight: 600;
  line-height: 1.07;
}

.tsa-h-3 {
  letter-spacing: -.014em;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.15;
}

.tsa-eyebrow {
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--brand);
  background: linear-gradient(95deg, var(--brand), var(--brand-light) 120%);
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
}

.tsa-lead {
  color: var(--text-2);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.42;
}

.tsa-body {
  color: var(--text-2);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.55;
}

.tsa-tiny {
  color: var(--text-4);
  letter-spacing: .14em;
  text-transform: uppercase;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.3;
}

.tsa-h-display {
  color: var(--text);
}

.tsa-num-mega {
  color: var(--text);
  font-family: var(--font-display);
  font-feature-settings: "tnum" 1, "ss01" 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.03em;
}

@supports (background: color-mix(in oklab, red, blue)) {
  .tsa-h-display {
    background: linear-gradient(178deg, var(--text) 0%, color-mix(in oklab, var(--text), var(--brand) 40%) 100%);
    -webkit-text-fill-color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
  }

  .tsa-num-mega {
    background: linear-gradient(180deg, var(--text) 0%, color-mix(in oklab, var(--text), var(--brand) 50%) 100%);
    -webkit-text-fill-color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
  }
}

.tsa-btn {
  cursor: pointer;
  white-space: nowrap;
  isolation: isolate;
  border: none;
  border-radius: 980px;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  transition: all .25s cubic-bezier(.4, 0, .2, 1);
  display: inline-flex;
  position: relative;
}

.tsa-btn-primary {
  background: var(--apple-blue);
  background: linear-gradient(180deg, var(--apple-blue), #0065cc);
  color: #fff;
  box-shadow: inset 0 0 0 .5px #00488f99, inset 0 1px #ffffff40, 0 6px 16px -4px #0071e380;
}

.tsa-btn-primary:hover {
  background: var(--apple-blue-hover);
  background: linear-gradient(180deg, var(--apple-blue-hover), var(--apple-blue));
  transform: translateY(-1px);
  box-shadow: inset 0 0 0 .5px #00488f99, inset 0 1px #ffffff4d, 0 12px 28px -6px #0071e3a6;
}

.tsa-btn-secondary {
  color: var(--text);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  background: #1d1d1f14;
}

.tsa-btn-secondary:hover {
  background: #1d1d1f1f;
}

.tsa-btn-large {
  padding: 14px 28px;
  font-size: 17px;
}

.tsa-btn-small {
  padding: 6px 14px;
  font-size: 13px;
}

.tsa-btn:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.tsa-rule {
  background: linear-gradient(90deg, transparent, var(--hairline) 30%, var(--hairline) 70%, transparent);
  width: 100%;
  height: 1px;
}

.tsa-card {
  background: var(--bg-elev);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  transition: transform .4s cubic-bezier(.2, .8, .2, 1), box-shadow .4s cubic-bezier(.2, .8, .2, 1);
  position: relative;
}

.tsa-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.tsa-card-flat {
  background: var(--bg-elev);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.tsa-card-authority {
  background: var(--bg-authority);
  background: radial-gradient(ellipse 100% 80% at 0% 0%, #80b3ff80 0%, transparent 50%), radial-gradient(ellipse 80% 70% at 100% 100%, #4ea3f566 0%, transparent 60%), linear-gradient(165deg, var(--bg-authority) 0%, var(--bg-authority-2) 100%);
  color: #f5f5f7;
  border-radius: 28px;
  box-shadow: inset 0 .5px #ffffff1a, 0 30px 80px -20px #00287866, 0 60px 120px -40px #00000080;
}

.tsa-spotlight {
  pointer-events: none;
  filter: blur(60px);
  opacity: .4;
  background: radial-gradient(circle, #4d9aeb99, #0000 70%);
  border-radius: 50%;
  position: absolute;
}

.tsa-link {
  color: var(--apple-blue);
  cursor: pointer;
  align-items: center;
  gap: 4px;
  font-size: 17px;
  font-weight: 400;
  transition: color .15s;
  display: inline-flex;
}

.tsa-link:hover {
  color: var(--apple-blue-hover);
}

.tsa-link svg {
  width: 12px;
  height: 12px;
}

.tsa-arrow:after {
  content: "›";
  margin-left: 2px;
  font-weight: 400;
  transition: transform .2s cubic-bezier(.4, 0, .2, 1);
  display: inline-block;
}

.tsa-link:hover .tsa-arrow:after {
  transform: translate(3px);
}

.tsa-watermark {
  font-family: var(--font-display);
  letter-spacing: -.04em;
  color: #1d1d1f0a;
  pointer-events: none;
  -webkit-user-select: none;
  user-select: none;
  font-weight: 700;
}

.tsa-num {
  font-feature-settings: "tnum" 1, "ss01" 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.022em;
}

.tsa-chip {
  background: var(--brand-soft);
  color: var(--brand-deep);
  border-radius: 980px;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  display: inline-flex;
  box-shadow: inset 0 .5px #fff9, 0 2px 4px #0f172a0a;
}

.tsa-mono-badge {
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  background: var(--brand-soft);
  color: var(--brand-deep);
  border-radius: 12px;
  justify-content: center;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  box-shadow: inset 0 .5px #ffffffe6, 0 4px 10px -2px #06c3;
}

::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}

::-webkit-scrollbar-thumb {
  background: #00000029;
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: #0000003d;
}

.tsa-reveal {
  animation: .55s cubic-bezier(.2, .8, .2, 1) both tsa-reveal;
}

@keyframes tsa-reveal {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes tsa-spin {
  0% {
    transform: rotate(0);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes tsa-ring-expand {
  0% {
    opacity: .8;
    transform: scale(.6);
  }

  to {
    opacity: 0;
    transform: scale(1.6);
  }
}

@keyframes tsa-nav-drop {
  0% {
    opacity: 0;
    transform: translateY(-6px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, :before, :after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 900px) {
  .tsa-h-1 {
    font-size: 42px;
  }

  .tsa-h-2 {
    font-size: 32px;
  }

  .tsa-h-3 {
    font-size: 24px;
  }

  .tsa-lead {
    font-size: 18px;
  }

  .tsa-body {
    font-size: 15px;
  }
}

@media (max-width: 600px) {
  .tsa-h-1 {
    font-size: 34px;
  }

  .tsa-h-2 {
    font-size: 27px;
  }
}

.csign-split-head {
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  display: flex;
}

.csign-grid-2 {
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  display: grid;
}

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

.csign-grid-4 {
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  display: grid;
}

.csign-trust-grid {
  grid-template-columns: 1.5fr 1fr;
  gap: 16px;
  display: grid;
}

@media (max-width: 900px) {
  .csign-split-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .csign-grid-3, .csign-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .csign-trust-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .csign-grid-2, .csign-grid-3, .csign-grid-4 {
    grid-template-columns: 1fr;
  }
}

.csign-skip {
  z-index: 100;
  background: var(--brand);
  color: #fff;
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 600;
  transition: top .15s;
  position: absolute;
  top: -48px;
  left: 12px;
}

.csign-skip:focus {
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

#main {
  display: block;
}