:root {
  --accent: #ee561d;
  --accent-deep: #b63a12;
  --accent-soft: #fff0e9;
  --paper: #f7f1ea;
  --ink: #f8f3ed;
  --muted: rgba(248, 243, 237, 0.68);
  --line: rgba(255, 255, 255, 0.14);
  --dark: #090806;
  --panel: rgba(18, 16, 13, 0.78);
  --panel-solid: #15110e;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 12%, rgba(238, 86, 29, 0.24), transparent 28rem),
    radial-gradient(circle at 82% 18%, rgba(182, 58, 18, 0.18), transparent 30rem),
    linear-gradient(145deg, #050505 0%, #11100d 46%, #20140f 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
  z-index: -2;
}

#neural-field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.82;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 18px clamp(22px, 5vw, 72px);
  background: rgba(7, 7, 6, 0.7);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #ff7b3e);
  border-radius: 14px;
  font-weight: 900;
  box-shadow: 0 14px 28px rgba(238, 86, 29, 0.35);
}

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

.brand strong {
  font-size: 17px;
  letter-spacing: 0.02em;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
}

.site-nav a:hover {
  color: #fff;
}

.nav-cta,
.primary-button,
.ghost-button,
.trial-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 800;
}

.nav-cta,
.primary-button,
.trial-form button {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 18px 42px rgba(238, 86, 29, 0.32);
}

.ghost-button {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  align-items: center;
  gap: clamp(32px, 6vw, 90px);
  min-height: calc(100vh - 82px);
  padding: 84px clamp(22px, 6vw, 92px) 72px;
}

.hero-copy {
  max-width: 850px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: #ff9a62;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 900px;
  margin-bottom: 26px;
  font-size: clamp(44px, 6.5vw, 88px);
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(32px, 4.2vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  font-size: 24px;
}

.hero-lede,
.section-copy p,
.demo-left p,
.trial-copy p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

.hero-lede {
  max-width: 760px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.trust-strip span {
  padding: 10px 14px;
  color: #ffd7c4;
  border: 1px solid rgba(238, 86, 29, 0.34);
  border-radius: 999px;
  background: rgba(238, 86, 29, 0.1);
}

.hero-visual {
  position: relative;
  min-height: 620px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(238, 86, 29, 0.22);
  border-radius: 50%;
  animation: rotate 18s linear infinite;
}

.orbit-a {
  width: 520px;
  height: 520px;
}

.orbit-b {
  width: 390px;
  height: 390px;
  animation-duration: 13s;
  animation-direction: reverse;
}

.command-panel,
.demo-board,
.trial-section,
.pain-grid article,
.value-grid article,
.step-card,
.timeline div {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.035));
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.command-panel {
  position: relative;
  width: min(100%, 520px);
  padding: 18px;
  border-radius: 34px;
  background-color: rgba(11, 10, 8, 0.82);
}

.panel-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--muted);
}

.panel-top span {
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.28);
  border-radius: 50%;
}

.panel-top b {
  margin-left: auto;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.pipeline {
  display: grid;
  gap: 12px;
}

.pipeline-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.045);
}

.pipeline-row.active {
  border-color: rgba(238, 86, 29, 0.68);
  background: rgba(238, 86, 29, 0.16);
}

.pipeline-row span {
  color: #ff9a62;
  font-weight: 900;
}

.pipeline-row em {
  color: var(--muted);
  font-style: normal;
  font-size: 13px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.metric-grid div {
  padding: 18px;
  border-radius: 20px;
  background: var(--accent-soft);
  color: #29130c;
}

.metric-grid small,
.metric-grid b {
  display: block;
}

.metric-grid b {
  margin-top: 6px;
  color: var(--accent);
  font-size: 32px;
}

.pain-section,
.workflow-section,
.value-section,
.demo-section,
.pilot-section,
.materials-section {
  padding: 92px clamp(22px, 6vw, 92px);
}

.pain-grid,
.value-grid,
.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.pain-grid article,
.value-grid article {
  min-height: 240px;
  padding: 30px;
  border-radius: 30px;
}

.pain-grid article span {
  color: #ff9a62;
  font-weight: 900;
}

.pain-grid p,
.value-grid p,
.step-card span,
.timeline span {
  color: var(--muted);
  line-height: 1.75;
}

.workflow-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: start;
  gap: clamp(28px, 5vw, 72px);
}

.section-copy {
  max-width: 680px;
}

.section-copy.narrow {
  max-width: 760px;
  margin-bottom: 34px;
}

.workflow-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.step-card {
  min-height: 148px;
  padding: 24px;
  border-radius: 26px;
}

.step-card b,
.step-card span,
.timeline b,
.timeline span {
  display: block;
}

.step-card b {
  margin-bottom: 12px;
  color: #fff;
  font-size: 22px;
}

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

.demo-board {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 42px;
  padding: clamp(28px, 5vw, 56px);
  border-radius: 38px;
  background-color: rgba(11, 10, 8, 0.84);
}

.demo-right {
  display: grid;
  gap: 14px;
}

.demo-item {
  padding: 18px 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.05);
}

.demo-item.done {
  color: #ffd7c4;
}

.demo-item.active {
  color: #fff;
  border-color: rgba(238, 86, 29, 0.62);
  background: rgba(238, 86, 29, 0.18);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.timeline div {
  min-height: 190px;
  padding: 26px;
  border-radius: 26px;
}

.timeline b {
  margin-bottom: 14px;
  color: #ff9a62;
  font-size: 22px;
}

.trial-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 44px;
  margin: 60px clamp(22px, 6vw, 92px);
  padding: clamp(28px, 5vw, 56px);
  border-radius: 40px;
}

.trial-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.trial-form label {
  display: grid;
  gap: 8px;
  color: #ffe2d4;
  font-weight: 800;
}

.trial-form input,
.trial-form select {
  width: 100%;
  height: 52px;
  padding: 0 16px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  font: inherit;
}

.trial-form select option {
  color: #1d1d1f;
}

.trial-form button,
#lead-output {
  grid-column: 1 / -1;
}

#lead-output {
  display: none;
  padding: 18px;
  color: #2b1209;
  border-radius: 18px;
  background: var(--accent-soft);
  line-height: 1.7;
  white-space: pre-wrap;
}

#lead-output.is-visible {
  display: block;
}

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

.materials-grid a {
  display: flex;
  align-items: end;
  min-height: 160px;
  padding: 24px;
  border: 1px solid rgba(238, 86, 29, 0.32);
  border-radius: 28px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(238, 86, 29, 0.18), rgba(255, 255, 255, 0.04)),
    rgba(255, 255, 255, 0.04);
  font-size: 20px;
  font-weight: 900;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(22px, 6vw, 92px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: #fff;
  margin-bottom: 6px;
}

.site-footer a {
  color: #ff9a62;
  font-weight: 900;
}

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

@media (max-width: 1020px) {
  .site-nav {
    display: none;
  }

  .hero,
  .workflow-section,
  .demo-board,
  .trial-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 520px;
  }

  .pain-grid,
  .value-grid,
  .timeline,
  .materials-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand small,
  .nav-cta {
    display: none;
  }

  .hero,
  .pain-section,
  .workflow-section,
  .value-section,
  .demo-section,
  .pilot-section,
  .materials-section {
    padding-left: 18px;
    padding-right: 18px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .orbit-a {
    width: 118vw;
    height: 118vw;
  }

  .orbit-b {
    width: 90vw;
    height: 90vw;
  }

  .pipeline-row {
    grid-template-columns: 38px 1fr;
  }

  .pipeline-row em {
    grid-column: 2;
  }

  .pain-grid,
  .value-grid,
  .workflow-map,
  .timeline,
  .trial-form,
  .materials-grid {
    grid-template-columns: 1fr;
  }

  .trial-section {
    margin-left: 18px;
    margin-right: 18px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}