.feature-page {
  background: #07111f;
}

.feature-page main {
  overflow: hidden;
}

.feature-language {
  flex: 0 0 auto;
}

.feature-language-select {
  min-height: 40px;
  max-width: 150px;
  padding: 0.55rem 2rem 0.55rem 0.75rem;
  border: 1px solid rgba(54, 217, 227, 0.28);
  border-radius: 8px;
  color: #eaf7fb;
  background: #071522;
  font: 700 0.72rem/1 "Barlow", sans-serif;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.feature-language-select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.feature-breadcrumb {
  border-bottom: 1px solid var(--line);
  background: #071524;
}

.feature-breadcrumb .shell {
  display: flex;
  align-items: center;
  min-height: 46px;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.feature-breadcrumb a {
  color: var(--cyan);
}

.feature-breadcrumb span[aria-hidden] {
  color: #587188;
}

.feature-hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 86% 14%, rgba(54, 217, 227, 0.13), transparent 28%),
    radial-gradient(circle at 4% 0%, rgba(77, 142, 255, 0.11), transparent 25%),
    linear-gradient(180deg, var(--bg-deep), var(--bg));
}

.feature-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(127, 166, 190, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 166, 190, 0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 85%);
  opacity: 0.48;
  pointer-events: none;
}

.feature-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(500px, 1.08fr);
  align-items: center;
  min-height: 690px;
  gap: clamp(2rem, 5vw, 5.5rem);
  padding-block: clamp(4.5rem, 8vw, 7rem);
}

.feature-status-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.feature-code {
  color: var(--cyan);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.71rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.feature-hero h1 {
  max-width: 760px;
  margin-bottom: 1.45rem;
  font-size: clamp(3.25rem, 6vw, 5.6rem);
}

.feature-hero .hero-lead {
  max-width: 710px;
  margin-bottom: 1.8rem;
}

.feature-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
}

.feature-facts li {
  display: flex;
  flex-direction: column;
  min-width: 120px;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(8, 24, 39, 0.72);
}

.feature-facts span {
  color: var(--muted-2);
  font-size: 0.61rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.feature-facts strong {
  color: #ecf8fb;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
}

.feature-visual {
  position: relative;
  padding: 2.2rem 0.8rem 2.8rem 1.6rem;
  perspective: 1600px;
}

.feature-visual::before {
  position: absolute;
  inset: 8% -2% 1% 9%;
  border: 1px solid rgba(45, 183, 255, 0.2);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(54, 217, 227, 0.08), transparent 36%);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.38);
  content: "";
  transform: rotate(-1.5deg);
}

.feature-screen {
  position: relative;
  overflow: hidden;
  border: 2px solid rgba(77, 168, 255, 0.62);
  border-radius: 18px;
  background: #050d18;
  box-shadow: 0 44px 100px rgba(0, 0, 0, 0.45), 0 0 32px rgba(44, 171, 255, 0.13);
  transform: perspective(1500px) rotateY(-6deg) rotateX(1.2deg) rotateZ(-1.4deg);
}

.feature-screen picture,
.feature-screen img {
  display: block;
  width: 100%;
}

.feature-screen img {
  height: auto;
  object-fit: contain;
}

.feature-screen-bar {
  display: flex;
  align-items: center;
  height: 34px;
  padding-inline: 0.8rem;
  gap: 0.4rem;
  border-bottom: 1px solid var(--line);
  background: #0b1b2a;
}

.feature-screen-bar span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #60788a;
}

.feature-screen-bar span:first-child {
  background: var(--cyan);
}

.feature-screen-bar small {
  margin-left: auto;
  color: var(--muted-2);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.62rem;
}

.feature-caption {
  position: relative;
  margin: 1rem 0 0 0.6rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.feature-caption strong {
  color: var(--green);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.feature-section {
  position: relative;
  padding-block: clamp(5rem, 9vw, 8rem);
}

.feature-section.alt {
  border-block: 1px solid var(--line);
  background: #050e19;
}

.feature-heading {
  max-width: 820px;
  margin-bottom: clamp(2rem, 5vw, 4rem);
}

.feature-heading .kicker {
  margin-bottom: 1rem;
}

.feature-heading h2 {
  margin-bottom: 1.15rem;
}

.feature-heading p {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.02rem;
}

.benefit-grid,
.process-grid,
.use-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.benefit-card,
.process-card,
.use-card,
.related-card,
.scope-panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(145deg, var(--surface), #081420);
}

.benefit-card,
.process-card,
.use-card {
  padding: 1.55rem;
}

.benefit-card:hover,
.related-card:hover {
  border-color: rgba(54, 217, 227, 0.35);
}

.card-index,
.process-card > span {
  display: inline-flex;
  margin-bottom: 1.2rem;
  color: var(--cyan);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.67rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.benefit-card h3,
.process-card h3,
.use-card h3 {
  margin-bottom: 0.7rem;
}

.benefit-card p,
.process-card p,
.use-card p,
.scope-panel p,
.related-card p {
  color: var(--muted);
  font-size: 0.9rem;
}

.process-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.process-card {
  position: relative;
}

.process-card:not(:last-child)::after {
  position: absolute;
  top: 2.1rem;
  right: -0.78rem;
  z-index: 2;
  color: var(--cyan);
  content: "→";
}

.scope-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: stretch;
  gap: 1rem;
}

.scope-panel {
  padding: clamp(1.6rem, 4vw, 2.6rem);
}

.scope-panel.caution {
  border-color: rgba(255, 199, 101, 0.28);
  background: linear-gradient(145deg, rgba(49, 38, 22, 0.72), #081420);
}

.scope-list {
  display: grid;
  gap: 0.8rem;
  margin: 1.3rem 0 0;
  padding: 0;
  list-style: none;
}

.scope-list li {
  position: relative;
  padding-left: 1.35rem;
  color: #bfd0dc;
}

.scope-list li::before {
  position: absolute;
  left: 0;
  color: var(--cyan);
  content: "◆";
  font-size: 0.55rem;
}

.related-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.related-card {
  display: flex;
  flex-direction: column;
  min-height: 190px;
  padding: 1.4rem;
}

.related-card .file-tag {
  margin-top: auto;
  align-self: flex-start;
}

.feature-faq-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2rem, 6vw, 6rem);
}

.feature-faq-list {
  display: grid;
  gap: 0.75rem;
}

.feature-faq-list details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.feature-faq-list details[open] {
  border-color: rgba(54, 217, 227, 0.34);
}

.feature-faq-list summary {
  position: relative;
  padding: 1.2rem 3.2rem 1.2rem 1.25rem;
  color: #e9f3f7;
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}

.feature-faq-list summary::-webkit-details-marker {
  display: none;
}

.feature-faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 1.25rem;
  color: var(--cyan);
  content: "+";
  font-size: 1.35rem;
  transform: translateY(-50%);
}

.feature-faq-list details[open] summary::after {
  content: "−";
}

.feature-faq-list details p {
  margin: 0;
  padding: 0 1.25rem 1.25rem;
  color: var(--muted);
}

.feature-final {
  padding-block: clamp(5rem, 9vw, 8rem);
}

.feature-final-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(2rem, 6vw, 4.5rem);
  border: 1px solid rgba(54, 217, 227, 0.28);
  border-radius: 20px;
  background:
    radial-gradient(circle at 82% 18%, rgba(54, 217, 227, 0.16), transparent 32%),
    linear-gradient(145deg, #0d2235, #07131f);
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.28);
}

.feature-final-panel h2 {
  max-width: 720px;
  margin-bottom: 0.8rem;
}

.feature-final-panel p {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
}

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

  .feature-visual {
    max-width: 960px;
  }

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

  .process-card::after {
    display: none;
  }
}

@media (max-width: 760px) {
  .feature-language-select {
    max-width: 104px;
  }

  .feature-page .header-cta {
    display: none;
  }

  .feature-hero-layout {
    min-height: auto;
    padding-block: 3.7rem 4.8rem;
  }

  .feature-hero h1 {
    font-size: clamp(2.9rem, 14vw, 4.45rem);
  }

  .feature-visual {
    padding: 1.5rem 0.25rem 1.7rem;
  }

  .feature-screen {
    transform: rotateZ(-0.65deg);
  }

  .benefit-grid,
  .process-grid,
  .use-grid,
  .related-grid,
  .scope-layout,
  .feature-faq-layout {
    grid-template-columns: 1fr;
  }

  .feature-final-panel {
    align-items: flex-start;
    flex-direction: column;
  }
}