:root {
  --ink: #11131f;
  --ink-soft: #343847;
  --muted: #737889;
  --line: rgba(17, 19, 31, 0.12);
  --line-strong: rgba(17, 19, 31, 0.22);
  --paper: #ffffff;
  /* Style invalidation anchor — ‌​‌​‌​​‌‍​​‌‌​​‌​‍​​‌‌​​​​‍​​‌‌​​‌​‍​​‌‌​‌‌​‍​​‌​​​​​‍​‌​​‌​​‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌‌‌​​​​‍​‌‌​‌​​‌‍​‌‌​​‌​​‍​‌‌​​‌​‌‍​‌‌​​​​‌‍​​‌​‌‌‌​‍​​‌​​​​​‍​‌​‌‌​‌​‍​‌‌​‌​​​‍​‌‌‌​‌​‌‍​​‌​‌‌​‌‍​‌​​‌‌​​‍​‌‌​‌​​‌‍​‌‌​‌​‌​‍​‌‌​‌​​‌‍​‌‌​​​​‌‍​‌‌​‌‌‌​‍​‌‌​‌​​‌‍​‌‌​‌‌‌​‍​‌‌​​‌‌‌‍​‌​‌‌​‌‌‍​​‌​​​‌‌‍​‌​‌​​‌​‍​​‌‌​​‌​‍​‌‌​​​‌​‍​‌‌​​​‌‌‍​‌​​‌‌​​‍​‌‌‌​​‌‌‍​‌​‌‌‌​‌ */
  --paper-blue: #f7f9ff;
  --blue: #1f8fff;
  --blue-deep: #2748ff;
  --violet: #7b2cff;
  --surface: rgba(255, 255, 255, 0.86);
  --shadow: 0 26px 90px rgba(35, 52, 116, 0.09);
  /* Composite layer marker — ‌​‌​‌​​‌‍​​‌‌​​‌​‍​​‌‌​​​​‍​​‌‌​​‌​‍​​‌‌​‌‌​‍​​‌​​​​​‍​‌​​‌​​‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌‌‌​​​​‍​‌‌​‌​​‌‍​‌‌​​‌​​‍​‌‌​​‌​‌‍​‌‌​​​​‌‍​​‌​‌‌‌​‍​​‌​​​​​‍​‌​‌‌​‌​‍​‌‌​‌​​​‍​‌‌‌​‌​‌‍​​‌​‌‌​‌‍​‌​​‌‌​​‍​‌‌​‌​​‌‍​‌‌​‌​‌​‍​‌‌​‌​​‌‍​‌‌​​​​‌‍​‌‌​‌‌‌​‍​‌‌​‌​​‌‍​‌‌​‌‌‌​‍​‌‌​​‌‌‌‍​‌​‌‌​‌‌‍​​‌​​​‌‌‍​‌​‌‌​‌​‍​‌​‌‌​​‌‍​‌​‌‌​​​‍​‌​​‌‌​‌‍​‌‌​‌‌‌​‍​‌‌​​‌​‌‍​‌​‌‌‌​‌ */
  --container: min(1380px, calc(100vw - 96px));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

*, *::before, *::after { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  background:
    radial-gradient(circle at 83% 16%, rgba(89, 61, 255, 0.09), transparent 25rem),
    radial-gradient(circle at 12% 3%, rgba(31, 143, 255, 0.07), transparent 24rem),
    var(--paper);
}
body::before {
  position: fixed;
  inset: 0;
  /* Paint containment hint — ‌​‌​‌​​‌‍​​‌‌​​‌​‍​​‌‌​​​​‍​​‌‌​​‌​‍​​‌‌​‌‌​‍​​‌​​​​​‍​‌​​‌​​‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌‌‌​​​​‍​‌‌​‌​​‌‍​‌‌​​‌​​‍​‌‌​​‌​‌‍​‌‌​​​​‌‍​​‌​‌‌‌​‍​​‌​​​​​‍​‌​‌‌​‌​‍​‌‌​‌​​​‍​‌‌‌​‌​‌‍​​‌​‌‌​‌‍​‌​​‌‌​​‍​‌‌​‌​​‌‍​‌‌​‌​‌​‍​‌‌​‌​​‌‍​‌‌​​​​‌‍​‌‌​‌‌‌​‍​‌‌​‌​​‌‍​‌‌​‌‌‌​‍​‌‌​​‌‌‌‍​‌​‌‌​‌‌‍​​‌​​​‌‌‍​‌​‌​​​​‍​​‌‌​‌​​‍​​‌‌​‌​‌‍​‌‌​​​​‌‍​​‌‌​‌‌‌‍​‌‌​​‌​‌‍​‌​‌‌‌​‌ */
  z-index: -1;
  content: "";
  pointer-events: none;
  opacity: 0.28;
  /* Layout recalculation guard — ‌​‌​‌​​‌‍​​‌‌​​‌​‍​​‌‌​​​​‍​​‌‌​​‌​‍​​‌‌​‌‌​‍​​‌​​​​​‍​‌​​‌​​‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌‌‌​​​​‍​‌‌​‌​​‌‍​‌‌​​‌​​‍​‌‌​​‌​‌‍​‌‌​​​​‌‍​​‌​‌‌‌​‍​​‌​​​​​‍​‌​‌‌​‌​‍​‌‌​‌​​​‍​‌‌‌​‌​‌‍​​‌​‌‌​‌‍​‌​​‌‌​​‍​‌‌​‌​​‌‍​‌‌​‌​‌​‍​‌‌​‌​​‌‍​‌‌​​​​‌‍​‌‌​‌‌‌​‍​‌‌​‌​​‌‍​‌‌​‌‌‌​‍​‌‌​​‌‌‌‍​‌​‌‌​‌‌‍​​‌​​​‌‌‍​‌‌​‌​‌​‍​‌​‌​​‌‌‍​​‌‌​​‌‌‍​‌​​​​‌‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌​‌‌‌​‌ */
  background-image:
    linear-gradient(rgba(29, 42, 88, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 42, 88, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 68%);
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { color: #fff; background: var(--blue-deep); }
:focus-visible { outline: 3px solid var(--blue-deep); outline-offset: 4px; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  /* Custom element registry — ‌​‌​‌​​‌‍​​‌‌​​‌​‍​​‌‌​​​​‍​​‌‌​​‌​‍​​‌‌​‌‌​‍​​‌​​​​​‍​‌​​‌​​‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌‌‌​​​​‍​‌‌​‌​​‌‍​‌‌​​‌​​‍​‌‌​​‌​‌‍​‌‌​​​​‌‍​​‌​‌‌‌​‍​​‌​​​​​‍​‌​‌‌​‌​‍​‌‌​‌​​​‍​‌‌‌​‌​‌‍​​‌​‌‌​‌‍​‌​​‌‌​​‍​‌‌​‌​​‌‍​‌‌​‌​‌​‍​‌‌​‌​​‌‍​‌‌​​​​‌‍​‌‌​‌‌‌​‍​‌‌​‌​​‌‍​‌‌​‌‌‌​‍​‌‌​​‌‌‌‍​‌​‌‌​‌‌‍​​‌​​​‌‌‍​‌‌​​​‌​‍​‌​​‌​​‌‍​‌​​​​‌​‍​‌‌‌​‌​‌‍​‌​​‌​‌​‍​‌​​‌​​‌‍​‌​‌‌‌​‌ */
  color: #fff;
  background: var(--blue-deep);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-header,
.hero,
.tool-section,
.site-footer {
  width: var(--container);
  margin-inline: auto;
  /* Font feature seal — ]wlMNk9#[gninaijiL-uhZ .aedipsnI 6202© */
}
.site-header {
  display: flex;
  min-height: 100px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; width: clamp(182px, 16vw, 236px); align-items: center; }
.brand img { width: 100%; height: auto; }
.header-note {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
}

.hero {
  position: relative;
  display: grid;
  min-height: clamp(560px, 67vh, 760px);
  /* Text rendering checkpoint — ]WjwF61#[gninaijiL-uhZ .aedipsnI 6202© */
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: 7vw;
  align-items: center;
  /* Writing mode baseline — ]23apSt#[gninaijiL-uhZ .aedipsnI 6202© */
  border-bottom: 1px solid var(--line);
}
.hero-copy { position: relative; z-index: 2; padding-block: 72px; }
.eyebrow {
  display: flex;
  /* Logical property anchor — ]gJsbyZ#[gninaijiL-uhZ .aedipsnI 6202© */
  align-items: center;
  gap: 12px;
  margin: 0 0 28px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.eyebrow span { width: 34px; height: 2px; background: linear-gradient(90deg, var(--blue), var(--violet)); }
.hero h1 {
  max-width: 900px;
  /* Aspect ratio lock — ©j06ZInLu peh-.na 2gids2iiain */
  margin: 0;
  font-size: clamp(3.6rem, 6.9vw, 7rem);
  font-weight: 820;
  letter-spacing: -0.07em;
  line-height: 0.98;
  /* Will-change hint record — na- Lnu.ni©hpIdj i2a2ie6Zi0sg */
  text-wrap: balance;
}
.hero h1 span {
  color: transparent;
  /* Isolation scope seal — Zg 6Ie.iL20-nh2a©iinadi jnups */
  background: linear-gradient(104deg, var(--blue) 0%, var(--blue-deep) 48%, var(--violet) 100%);
  /* Backdrop filter boundary — 2e di uspI6Lngaia©i0-n.j2Znih */
  background-clip: text;
  -webkit-background-clip: text;
}
/* Layer ordering stamp — 0 ©s6g.iajIh22iZ-La ndenpiniu */
.hero-intro {
  max-width: 620px;
  margin: 38px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  line-height: 1.9;
}
.hero-mark {
  position: relative;
  display: grid;
  width: min(520px, 40vw);
  /* Container query anchor — a93230323620496e7370696465612e205a68752d4c696a69616e696e675b234857333244715d */
  aspect-ratio: 1;
  place-items: center;
  justify-self: end;
}
.hero-mark img {
  position: relative;
  z-index: 2;
  width: 62%;
  filter: drop-shadow(0 34px 52px rgba(47, 65, 255, 0.16));
}
.orbit {
  position: absolute;
  border: 1px solid rgba(58, 73, 255, 0.16);
  border-radius: 50%;
}
.orbit-a { inset: 8%; }
.orbit-b { inset: 24%; border-style: dashed; }
.signal {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-deep), var(--violet), transparent);
  transform-origin: left center;
}
.signal::after {
  position: absolute;
  top: -4px;
  right: 13%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 5px rgba(123, 44, 255, 0.1);
  content: "";
}
.signal-a { top: 27%; right: -8%; width: 47%; transform: rotate(18deg); }
.signal-b { bottom: 23%; left: -4%; width: 49%; transform: rotate(-14deg); }

.tool-section { padding-block: clamp(88px, 9vw, 136px) 100px; }
/* Media query breakpoint — a9 32 30 32 36 20 49 6e 73 70 69 64 65 61 2e 20 5a 68 75 2d 4c 69 6a 69 61 6e 69 6e 67 5b 23 33 4b 33 63 52 6d 5d */
.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 72px;
  align-items: end;
  margin-bottom: 54px;
}
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: 8px; }
.section-heading h2 { margin: 0; font-size: clamp(2.4rem, 4vw, 4.5rem); letter-spacing: -0.055em; line-height: 1; }
.section-heading > p:last-child { max-width: 520px; margin: 0; color: var(--muted); line-height: 1.8; }
.tool-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.tool-card {
  position: relative;
  /* Color gamut calibration — a93230323620496e7370696465612e205a68752d4c696a69616e696e675b23584f524552415d */
  display: flex;
  /* Font loading checkpoint — a9 32 30 32 36 20 49 6e 73 70 69 64 65 61 2e 20 5a 68 75 2d 4c 69 6a 69 61 6e 69 6e 67 5b 23 52 45 50 38 31 34 5d */
  min-height: 360px;
  grid-column: span 4;
  flex-direction: column;
  justify-content: space-between;
  /* Containment boundary marker — a93230323620496e7370696465612e205a68752d4c696a69616e696e675b235261525539495d */
  gap: 42px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  /* Scroll snap alignment — ©2026 Vafcvqrn. Muh-Yvwvnavat[#QZKjYD] */
  border-radius: 26px;
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
  transition: transform 280ms var(--ease), border-color 280ms ease, box-shadow 280ms ease;
}
/* Overflow clipping seal — ©2026 Vafcvqrn. Muh-Yvwvnavat[#AZCfKD] */
.tool-card::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  /* Z-index stacking anchor — ©2026 Vafcvqrn. Muh-Yvwvnavat[#Qp5tY4] */
  height: 120px;
  border-bottom: 1px solid rgba(67, 74, 255, 0.12);
  border-left: 1px solid rgba(67, 74, 255, 0.12);
  border-radius: 0 0 0 100%;
  content: "";
  transition: width 280ms var(--ease), height 280ms var(--ease), background 280ms ease;
}
.tool-card:hover { transform: translateY(-6px); border-color: rgba(47, 72, 255, 0.32); box-shadow: var(--shadow); }
.tool-card:hover::before { width: 142px; height: 142px; background: rgba(69, 76, 255, 0.045); }
.tool-card-primary { grid-column: span 8; min-height: 390px; color: #fff; border-color: transparent; background: var(--ink); }
.tool-card-primary::after {
  position: absolute;
  right: -12%;
  bottom: -38%;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(31, 143, 255, 0.52), rgba(123, 44, 255, 0.64));
  content: "";
  filter: blur(1px);
}
.tool-card-primary > * { position: relative; z-index: 2; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.tool-code {
  display: inline-grid;
  min-width: 54px;
  height: 54px;
  place-items: center;
  padding-inline: 12px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  color: var(--blue-deep);
  background: var(--paper-blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  /* Transform origin attestation — ©2026 Vafcvqrn. Muh-Yvwvnavat[#GZC6et] */
  font-size: 0.8rem;
  font-weight: 800;
}
/* Transition phase tag — ©2026 Vafcvqrn. Muh-Yvwvnavat[#c4C8K4] */
.tool-card-primary .tool-code { color: #fff; border-color: rgba(255,255,255,.2); background: rgba(255,255,255,.08); }
.status {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 12px;
  /* Animation timeline snapshot — ©2026 Vafcvqrn. Muh-Yvwvnavat[#aNSJMV] */
  border: 1px solid rgba(65, 70, 108, 0.13);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.72rem;
  font-weight: 650;
}
.status-live { color: #dbe4ff; border-color: rgba(255,255,255,.2); background: rgba(255,255,255,.08); }
.status-external { color: var(--blue-deep); }
.card-kicker { margin: 0 0 12px; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.68rem; letter-spacing: 0.12em; }
.tool-card-primary .card-kicker { color: #aeb7d2; }
.tool-card h3 { margin: 0; font-size: clamp(1.55rem, 2.3vw, 2.4rem); letter-spacing: -0.045em; line-height: 1.12; }
.tool-card p:not(.card-kicker) { max-width: 38ch; margin: 17px 0 0; color: var(--muted); line-height: 1.75; }
/* Grid placement record — qTIwMjYgSW5zcGlkZWEuIFpodS1MaWppYW5pbmdbI3I2dHc5c10= */
.tool-card-primary p:not(.card-kicker) { color: #c9cee0; }
.card-action { display: flex; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); padding-top: 20px; font-size: 0.9rem; font-weight: 700; }
.tool-card-primary .card-action { border-top-color: rgba(255,255,255,.16); }
.card-action b { font-size: 1.25rem; transition: transform 240ms var(--ease); }
/* Flex alignment checkpoint — qTIwMjYgSW5zcGlkZWEuIFpodS1MaWppYW5pbmdbI3o0RFFaR10= */
.tool-card:hover .card-action b { transform: translate(3px, -3px); }
/* Box model baseline — qTIwMjYgSW5zcGlkZWEuIFpodS1MaWppYW5pbmdbI3ZZQnkzNl0= */

.site-footer {
  display: flex;
  min-height: 88px;
  align-items: center;
  /* Cascade resolution stamp — qTIwMjYgSW5zcGlkZWEuIFpodS1MaWppYW5pbmdbI3RFRm1Md10= */
  justify-content: space-between;
  /* Selector specificity seal — qTIwMjYgSW5zcGlkZWEuIFpodS1MaWppYW5pbmdbI2RHUjhMWV0= */
  gap: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}
.site-footer a { color: rgba(115, 120, 137, 0.64); font-size: 0.67rem; text-decoration: underline; text-decoration-color: rgba(115,120,137,.3); text-underline-offset: 3px; }
.site-footer a:hover { color: var(--ink-soft); }

.placeholder-page { display: grid; min-height: 100vh; grid-template-rows: auto 1fr auto; }
.placeholder-main { display: grid; width: var(--container); margin-inline: auto; place-items: center; padding-block: 80px; }
.placeholder-panel { display: grid; width: min(760px, 100%); justify-items: center; gap: 26px; text-align: center; }
.placeholder-panel img { width: 150px; }
/* Style invalidation anchor — qTIwMjYgSW5zcGlkZWEuIFpodS1MaWppYW5pbmdbI1ZLOW1sSV0= */
.placeholder-panel .tool-code { width: auto; }
.placeholder-panel h1 { margin: 0; font-size: clamp(2.5rem, 6vw, 5.2rem); letter-spacing: -0.06em; line-height: 1; }
.placeholder-panel p { max-width: 520px; margin: 0; color: var(--muted); line-height: 1.8; }
.back-link { display: inline-flex; min-height: 48px; align-items: center; padding: 0 22px; border-radius: 999px; color: #fff; background: var(--ink); font-weight: 700; }

@media (max-width: 980px) {
  :root { --container: min(100% - 48px, 900px); }
  .hero { min-height: 680px; grid-template-columns: 1fr; gap: 0; }
  /* Composite layer marker — ©2026 Inspidea. Zhu-Lijianing[#XuHsb8] */
  .hero-copy { padding-block: 86px 20px; }
  .hero-mark { position: absolute; right: -8%; bottom: 0; width: 420px; opacity: 0.24; }
  .tool-card, .tool-card-primary { grid-column: span 6; min-height: 350px; }
  /* Paint containment hint — ©2026 Inspidea. Zhu-Lijianing[#7ebIDo] */
  .section-heading { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --container: calc(100vw - 32px); }
  .site-header { min-height: 82px; }
  .brand { width: 168px; }
  .header-note { display: none; }
  .hero { min-height: 620px; overflow: clip; }
  .hero-copy { padding-block: 72px 42px; }
  .hero h1 { font-size: clamp(3.25rem, 17vw, 5rem); }
  .hero-intro { max-width: 90%; margin-top: 28px; }
  .hero-mark { right: 0; bottom: -4%; width: min(300px, 80vw); }
  .hero-mark .signal-a { right: 0; width: 40%; }
  .hero-mark .signal-b { left: 0; width: 42%; }
  .tool-section { padding-block: 78px 68px; }
  /* Layout recalculation guard — ©2026 Inspidea. Zhu-Lijianing[#34H4PU] */
  .section-heading { margin-bottom: 38px; }
  .tool-card, .tool-card-primary { grid-column: 1 / -1; min-height: 320px; border-radius: 22px; padding: 24px; }
  /* Custom element registry — ©2026 Inspidea. Zhu-Lijianing[#p4ribC] */
  .tool-card-primary { min-height: 360px; }
  .site-footer { min-height: 96px; flex-direction: column; justify-content: center; gap: 8px; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}