:root {
  color-scheme: dark;
  --bg: #070b12;
  --bg-2: #0b121c;
  --panel: rgba(18, 26, 39, 0.78);
  --panel-strong: rgba(23, 32, 47, 0.94);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #eef5ff;
  --muted: #93a3ba;
  --muted-strong: #c6d2e3;
  --blue: #75a7ff;
  --teal: #2fc7bd;
  --green: #6edb93;
  --amber: #f0b85f;
  --violet: #a477ff;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  --font-ui: "Avenir Next", "IBM Plex Sans", "PingFang SC", "Hiragino Sans GB",
    "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, rgba(47, 199, 189, 0.18), transparent 28%),
    radial-gradient(circle at 88% 10%, rgba(117, 167, 255, 0.18), transparent 26%),
    linear-gradient(180deg, #070b12 0%, #0b111b 48%, #080c13 100%);
  font-family: var(--font-ui);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
  background-size: 112px 112px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.88), transparent 86%);
}

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

.site-shell {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-nav {
  min-height: 76px;
  display: grid;
  grid-template-columns: minmax(320px, 1fr) auto minmax(220px, 1fr);
  align-items: center;
  gap: 24px;
}

.brand-nav-cluster,
.brand-link,
.nav-actions,
.nav-links,
.hero-actions,
.hero-tags,
.workflow-line,
.model-card,
.site-footer {
  display: flex;
  align-items: center;
}

.brand-nav-cluster {
  gap: 14px;
  min-width: 0;
}

.brand-link {
  gap: 10px;
  min-width: 0;
}

.brand-link strong,
.brand-link small {
  display: block;
}

.brand-link strong {
  font-size: 0.94rem;
  font-weight: 850;
}

.brand-link small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.76rem;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--blue), var(--teal) 62%, var(--green));
  color: #061019;
  font-size: 0.92rem;
  font-weight: 900;
  box-shadow: 0 16px 34px rgba(47, 199, 189, 0.25);
}

.contact-menu {
  position: relative;
  flex: 0 0 auto;
  z-index: 30;
}

.contact-trigger {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025)),
    rgba(17, 26, 39, 0.78);
  color: var(--muted-strong);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 850;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease;
}

.contact-trigger:hover,
.contact-menu:focus-within .contact-trigger {
  transform: translateY(-1px);
  border-color: rgba(47, 199, 189, 0.38);
  background: rgba(47, 199, 189, 0.12);
  color: #ffffff;
}

.contact-card {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  width: min(460px, calc(100vw - 40px));
  padding: 16px;
  border: 1px solid rgba(111, 231, 218, 0.24);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 42%),
    #0a1019;
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.44),
    inset 0 1px 0 rgba(255, 255, 255, 0.09);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  pointer-events: none;
  transition:
    opacity 160ms ease,
    visibility 160ms ease,
    transform 160ms ease;
}

.contact-menu:hover .contact-card,
.contact-menu:focus-within .contact-card {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.contact-card::before {
  content: "";
  position: absolute;
  left: 22px;
  top: -6px;
  width: 10px;
  height: 10px;
  border-left: 1px solid rgba(111, 231, 218, 0.24);
  border-top: 1px solid rgba(111, 231, 218, 0.24);
  background: rgba(10, 16, 25, 0.97);
  transform: rotate(45deg);
}

.contact-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-card-head strong {
  font-size: 0.96rem;
  font-weight: 900;
}

.contact-card-head span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.contact-method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  gap: 10px;
  margin-top: 12px;
}

.contact-method {
  min-width: 0;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
}

.contact-method span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
}

.contact-method strong {
  display: block;
  margin-top: 7px;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1.35;
  font-weight: 850;
}

.contact-method[href^="mailto"] strong {
  white-space: nowrap;
}

.nav-links {
  position: relative;
  isolation: isolate;
  justify-content: center;
  gap: 4px;
  padding: 5px;
  border: 1px solid transparent;
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(22, 31, 46, 0.72), rgba(9, 14, 24, 0.52)) padding-box,
    linear-gradient(135deg, rgba(117, 167, 255, 0.5), rgba(47, 199, 189, 0.48), rgba(255, 255, 255, 0.1)) border-box;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    inset 0 -1px 0 rgba(47, 199, 189, 0.08),
    0 18px 48px rgba(0, 0, 0, 0.32),
    0 0 44px rgba(47, 199, 189, 0.1);
  backdrop-filter: blur(22px) saturate(150%);
}

.nav-links::before {
  content: "";
  position: absolute;
  inset: 3px;
  z-index: -1;
  border-radius: inherit;
  background:
    radial-gradient(circle at 28% 20%, rgba(117, 167, 255, 0.16), transparent 32%),
    radial-gradient(circle at 72% 90%, rgba(47, 199, 189, 0.16), transparent 34%),
    linear-gradient(100deg, transparent 0%, rgba(255, 255, 255, 0.08) 42%, transparent 66%);
  background-size: 100% 100%, 100% 100%, 220% 100%;
  opacity: 0.9;
  animation: navGlassSweep 7s ease-in-out infinite;
}

.nav-links::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 18px;
  right: 18px;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.34), transparent);
  opacity: 0.7;
}

.nav-links a {
  position: relative;
  min-width: 76px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, 0.075);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted-strong);
  font-size: 0.86rem;
  font-weight: 850;
  letter-spacing: 0;
  transition:
    color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.nav-links a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 0 12px rgba(47, 199, 189, 0.42);
  opacity: 0.62;
  transition:
    opacity 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.nav-links a:hover {
  transform: translateY(-1px);
  border-color: rgba(111, 231, 218, 0.2);
  background: linear-gradient(135deg, rgba(117, 167, 255, 0.12), rgba(47, 199, 189, 0.12));
  color: #f6fbff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 8px 22px rgba(0, 0, 0, 0.24);
}

.nav-links a:hover::before {
  opacity: 1;
  transform: scale(1.2);
  box-shadow: 0 0 18px rgba(47, 199, 189, 0.72);
}

.site-shell:has(#features:target) .nav-links a[href="#features"],
.site-shell:has(#models:target) .nav-links a[href="#models"],
.site-shell:has(#workflow:target) .nav-links a[href="#workflow"] {
  border-color: rgba(111, 231, 218, 0.24);
  background: linear-gradient(135deg, rgba(117, 167, 255, 0.24), rgba(47, 199, 189, 0.22));
  color: #ffffff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 0 0 1px rgba(111, 231, 218, 0.18),
    0 12px 28px rgba(47, 199, 189, 0.14);
}

.site-shell:has(#features:target) .nav-links a[href="#features"]::before,
.site-shell:has(#models:target) .nav-links a[href="#models"]::before,
.site-shell:has(#workflow:target) .nav-links a[href="#workflow"]::before {
  opacity: 1;
  box-shadow: 0 0 18px rgba(47, 199, 189, 0.72);
}

.nav-actions {
  justify-content: flex-end;
  gap: 10px;
}

.text-link,
.primary-link,
.secondary-link {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 800;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.text-link {
  padding: 0 12px;
  color: var(--muted-strong);
}

.primary-link,
.secondary-link {
  padding: 0 16px;
  border: 1px solid transparent;
}

.primary-link {
  background: linear-gradient(135deg, #82b0ff, #32c7bd 58%, #70dc98);
  color: #051018;
  box-shadow: 0 16px 36px rgba(47, 199, 189, 0.22);
}

.secondary-link {
  background: rgba(255, 255, 255, 0.045);
  border-color: var(--line);
  color: var(--text);
}

.primary-link:hover,
.secondary-link:hover,
.text-link:hover {
  transform: translateY(-1px);
}

.large {
  min-height: 48px;
  padding: 0 22px;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 0.82fr);
  gap: 70px;
  align-items: center;
  padding: 34px 0 62px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.hero-copy {
  max-width: 560px;
}

.eyebrow,
.section-heading span {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
}

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

h1 {
  margin-top: 18px;
  font-size: clamp(2.65rem, 4.6vw, 4.1rem);
  line-height: 0.96;
  font-weight: 900;
}

.hero-lead {
  margin-top: 22px;
  max-width: 540px;
  color: var(--muted-strong);
  font-size: 1rem;
  line-height: 1.85;
}

.hero-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-tags {
  width: min(520px, 100%);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 28px;
}

.hero-tags span {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent),
    rgba(255, 255, 255, 0.032);
  color: var(--muted-strong);
  font-size: 0.82rem;
  font-weight: 750;
  white-space: nowrap;
}

.hero-product {
  position: relative;
  min-height: 430px;
}

.api-visual {
  position: relative;
  z-index: 2;
  width: min(440px, 100%);
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
  overflow: hidden;
}

.window-bar {
  height: 46px;
  gap: 8px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.window-bar span:nth-child(1) {
  background: #ff6e6e;
}

.window-bar span:nth-child(2) {
  background: #f0b85f;
}

.window-bar span:nth-child(3) {
  background: #65d787;
}

.window-bar strong {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.78rem;
}

.api-body {
  min-height: 330px;
  padding: 24px;
  display: grid;
  gap: 22px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.88rem;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: #dfe9ff;
}

.terminal-line span {
  color: var(--green);
}

.terminal-line strong {
  position: relative;
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  font-weight: 750;
}

.terminal-line strong::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1.1em;
  margin-left: 4px;
  vertical-align: -0.18em;
  background: var(--green);
  animation: blinkCursor 1s steps(2, start) infinite;
}

.route-track {
  position: relative;
  height: 88px;
  border: 1px solid rgba(255, 255, 255, 0.075);
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(117, 167, 255, 0.08), transparent 42%),
    rgba(255, 255, 255, 0.025);
}

.route-track::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 199, 189, 0.8), transparent);
}

.route-track::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 24px;
  width: 88px;
  height: 1px;
  background: #78ffe5;
  box-shadow: 0 0 18px rgba(47, 199, 189, 0.72);
  animation: routeScan 3.2s ease-in-out infinite;
}

.route-track i {
  position: absolute;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: var(--teal);
  box-shadow: 0 0 20px rgba(47, 199, 189, 0.6);
}

.route-track i:nth-child(1) {
  left: 24px;
}

.route-track i:nth-child(2) {
  left: calc(50% - 4px);
  animation: pointPulse 3.2s ease-in-out infinite 0.7s;
}

.route-track i:nth-child(3) {
  right: 24px;
  animation: pointPulse 3.2s ease-in-out infinite 1.3s;
}

.model-flow {
  display: grid;
  gap: 8px;
}

.flow-row {
  min-height: 50px;
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted-strong);
  background: rgba(255, 255, 255, 0.028);
  animation: rowGlow 4.8s ease-in-out infinite;
}

.flow-row:nth-child(2) {
  animation-delay: 1.4s;
}

.flow-row:nth-child(3) {
  animation-delay: 2.8s;
}

.flow-row span {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
}

.flow-row strong {
  font-size: 0.88rem;
}

.flow-row em {
  color: var(--muted);
  font-size: 0.76rem;
  font-style: normal;
}

.response-line {
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.response-line mark {
  padding: 3px 7px;
  border-radius: 6px;
  background: rgba(110, 219, 147, 0.18);
  color: var(--green);
}

.signal-panel {
  position: absolute;
  inset: 46px auto auto 0;
  width: 250px;
  display: grid;
  gap: 12px;
  opacity: 0.36;
}

.signal-panel span {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(117, 167, 255, 0.58), transparent);
  animation: signalSlide 3.8s ease-in-out infinite;
}

.signal-panel span:nth-child(2) {
  width: 76%;
  animation-delay: 0.7s;
}

.signal-panel span:nth-child(3) {
  width: 58%;
  animation-delay: 1.4s;
}

.feature-band,
.models-section,
.workflow-section {
  position: relative;
  margin-top: 28px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.085);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.055), transparent 44%),
    radial-gradient(circle at 86% 0%, rgba(117, 167, 255, 0.09), transparent 30%),
    rgba(10, 16, 25, 0.58);
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.section-heading {
  max-width: none;
  margin-bottom: 24px;
  display: block;
}

.section-heading.centered {
  margin-right: 0;
  margin-left: 0;
  text-align: left;
}

h2 {
  margin-top: 10px;
  max-width: 720px;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.18;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.feature-card,
.model-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.048), transparent 48%),
    rgba(13, 20, 31, 0.72);
  backdrop-filter: blur(16px);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.feature-card:hover,
.model-card:hover {
  transform: translateY(-2px);
  border-color: rgba(47, 199, 189, 0.28);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 48%),
    rgba(15, 25, 38, 0.82);
}

.feature-card {
  min-height: 206px;
  padding: 20px;
}

.feature-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  color: #061019;
  font-size: 0.76rem;
  font-weight: 900;
}

.feature-icon.blue {
  background: var(--blue);
}

.feature-icon.teal {
  background: var(--teal);
}

.feature-icon.green {
  background: var(--green);
}

.feature-icon.amber {
  background: var(--amber);
}

.feature-icon.violet {
  background: var(--violet);
}

.feature-icon.slate {
  background: #9fb0c8;
}

h3 {
  font-size: 1.08rem;
}

.feature-card p {
  margin-top: 12px;
  color: var(--muted-strong);
  font-size: 0.92rem;
  line-height: 1.75;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.model-card {
  min-height: 84px;
  gap: 12px;
  padding: 14px;
}

.model-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: #061019;
  font-size: 1rem;
  font-weight: 900;
}

.model-avatar.seedance {
  background: linear-gradient(135deg, #75a7ff, #2fc7bd);
}

.model-avatar.veo {
  background: linear-gradient(135deg, #6edb93, #75a7ff);
}

.model-avatar.gpt {
  background: linear-gradient(135deg, #2fc7bd, #6edb93);
}

.model-avatar.kling {
  background: linear-gradient(135deg, #f0b85f, #75a7ff);
}

.model-avatar.grok {
  background: linear-gradient(135deg, #a477ff, #2fc7bd);
}

.model-avatar.omni {
  background: linear-gradient(135deg, #75a7ff, #a477ff);
}

.model-avatar.more {
  background: #9fb0c8;
}

.model-card div {
  min-width: 0;
  flex: 1 1 auto;
}

.model-card strong,
.model-card small {
  display: block;
}

.model-card strong {
  font-size: 0.98rem;
}

.model-card small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.78rem;
}

.model-card em {
  padding: 5px 8px;
  border-radius: 999px;
  background: rgba(47, 199, 189, 0.12);
  color: var(--teal);
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 850;
}

.muted-card {
  opacity: 0.82;
}

.muted-card em {
  background: rgba(159, 176, 200, 0.12);
  color: #c8d4e4;
}

.workflow-line {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  border: 0;
  background: transparent;
}

.workflow-line div {
  min-height: 96px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.046), transparent 58%),
    rgba(13, 20, 31, 0.7);
}

.workflow-line strong,
.workflow-line span {
  display: block;
}

.workflow-line strong {
  color: var(--teal);
  font-size: 0.86rem;
}

.workflow-line span {
  margin-top: 16px;
  font-size: 1.05rem;
  font-weight: 850;
}

.site-footer {
  justify-content: space-between;
  gap: 18px;
  min-height: 86px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer a {
  color: var(--muted-strong);
  font-weight: 800;
}

@keyframes blinkCursor {
  0%,
  46% {
    opacity: 1;
  }

  47%,
  100% {
    opacity: 0;
  }
}

@keyframes navGlassSweep {
  0%,
  100% {
    background-position: center, center, -120% 0;
  }

  52% {
    background-position: center, center, 120% 0;
  }
}

@keyframes routeScan {
  0% {
    transform: translateX(0);
    opacity: 0;
  }

  18%,
  76% {
    opacity: 1;
  }

  100% {
    transform: translateX(258px);
    opacity: 0;
  }
}

@keyframes pointPulse {
  0%,
  100% {
    transform: translateY(-50%) scale(1);
  }

  45% {
    transform: translateY(-50%) scale(1.65);
  }
}

@keyframes rowGlow {
  0%,
  100% {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.028);
  }

  38% {
    border-color: rgba(47, 199, 189, 0.48);
    background: rgba(47, 199, 189, 0.08);
  }
}

@keyframes signalSlide {
  0% {
    transform: translateX(-18px);
    opacity: 0;
  }

  40% {
    opacity: 1;
  }

  100% {
    transform: translateX(70px);
    opacity: 0;
  }
}

@media (max-width: 980px) {
  .site-nav {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero-section {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 34px;
    gap: 38px;
  }

  .hero-product {
    min-height: auto;
  }

  .api-visual {
    margin-left: 0;
  }

  .signal-panel {
    display: none;
  }

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

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

@media (max-width: 680px) {
  .site-shell {
    width: min(100% - 28px, 1180px);
  }

  .site-nav {
    min-height: 70px;
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px 0;
  }

  .nav-actions {
    justify-content: flex-start;
    width: 100%;
  }

  .brand-nav-cluster {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .contact-card {
    left: auto;
    right: 0;
  }

  .contact-card::before {
    left: auto;
    right: 28px;
  }

  .text-link,
  .primary-link {
    flex: 1 1 0;
  }

  .hero-section {
    gap: 34px;
    padding: 24px 0 46px;
  }

  h1 {
    font-size: clamp(2.9rem, 15vw, 4.2rem);
  }

  .hero-lead {
    font-size: 0.98rem;
  }

  .hero-actions a {
    width: 100%;
  }

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

  .api-visual {
    width: 100%;
  }

  .api-body {
    min-height: 300px;
    padding: 18px;
  }

  .flow-row {
    grid-template-columns: 32px 1fr;
  }

  .flow-row em {
    display: none;
  }

  .feature-grid,
  .model-grid {
    grid-template-columns: 1fr;
  }

  .feature-band,
  .models-section,
  .workflow-section {
    margin-top: 20px;
    padding: 20px;
  }

  .section-heading {
    display: block;
    margin-bottom: 20px;
  }

  .workflow-line {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 22px 0;
  }
}