:root {
  --bg: #17110f;
  --bg-soft: #231918;
  --surface: rgba(255, 248, 242, 0.04);
  --surface-strong: rgba(255, 248, 242, 0.08);
  --line: rgba(255, 159, 67, 0.16);
  --line-strong: rgba(255, 159, 67, 0.34);
  --text: #fff8f1;
  --text-secondary: rgba(255, 239, 224, 0.78);
  --text-muted: rgba(255, 216, 188, 0.58);
  --primary: #ff8a1f;
  --primary-strong: #f97316;
  --accent: #ffb36a;
  --shadow: 0 26px 64px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 16px 36px rgba(0, 0, 0, 0.22);
  --radius-sm: 0.9rem;
  --radius: 1.35rem;
  --radius-lg: 1.85rem;
  --container: 1220px;
  --font-sans: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-mono: "Roboto Mono", "Consolas", monospace;
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 138, 31, 0.18), transparent 24%),
    radial-gradient(circle at 80% 0%, rgba(255, 179, 106, 0.14), transparent 20%),
    linear-gradient(180deg, #120d0c 0%, #17110f 50%, #120d0c 100%);
  line-height: 1.65;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

canvas,
img {
  display: block;
  max-width: 100%;
}

.page-shell {
  position: relative;
}

.page-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 88%);
}

.container {
  width: min(100% - 2rem, var(--container));
  margin: 0 auto;
}

.section {
  padding: 6rem 0;
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 159, 67, 0.18);
  background: rgba(255, 138, 31, 0.08);
  color: #ffd7b1;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.eyebrow-light {
  color: rgba(255, 255, 255, 0.88);
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
}

.section-header {
  max-width: 840px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.surface-card,
.output-card,
.feature-panel,
.deployment-card,
.guide-side,
.preview-main,
.preview-side,
.platform-hero-card {
  background: linear-gradient(180deg, rgba(255, 248, 242, 0.055), rgba(255, 248, 242, 0.025));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  min-height: 50px;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #1e130f;
  box-shadow: 0 0 0 1px rgba(255, 179, 106, 0.18), 0 16px 32px rgba(249, 115, 22, 0.22);
}

.btn-secondary {
  background: rgba(255, 248, 242, 0.04);
  color: #ffe7d3;
  border-color: rgba(255, 159, 67, 0.24);
}

.btn-secondary:hover {
  border-color: rgba(255, 159, 67, 0.48);
  box-shadow: 0 0 0 1px rgba(255, 159, 67, 0.14);
}

.btn-contrast {
  background: #fff4eb;
  color: #221410;
  box-shadow: 0 18px 32px rgba(0, 0, 0, 0.28);
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 1200;
  background: rgba(18, 13, 12, 0.72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 159, 67, 0.12);
}

.navbar.scrolled {
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.2);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.25rem;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.85rem;
  height: 2.85rem;
  border-radius: 0.95rem;
  background: linear-gradient(135deg, rgba(255, 138, 31, 0.2), rgba(255, 179, 106, 0.28));
  color: #fff2e4;
  box-shadow: inset 0 0 24px rgba(255, 179, 106, 0.12);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-text strong {
  font-family: var(--font-display);
  font-size: 1.04rem;
}

.logo-text span:last-child {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.navbar-menu {
  display: none;
  align-items: center;
  gap: 1.45rem;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 600;
}

.nav-link:hover {
  color: #dff4ff;
}

.nav-link.primary {
  padding: 0.78rem 1.15rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 138, 31, 0.22), rgba(255, 179, 106, 0.26));
  border: 1px solid rgba(255, 159, 67, 0.28);
  color: #fff8f1;
}

.navbar-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid rgba(255, 159, 67, 0.2);
  border-radius: 0.95rem;
  background: rgba(255, 248, 242, 0.04);
  color: var(--text);
  cursor: pointer;
}

.hero {
  padding: 5.75rem 0 4rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-copy-simple {
  max-width: 680px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.7vw, 5.3rem);
  line-height: 1;
  letter-spacing: -0.05em;
  margin-bottom: 1.25rem;
  text-wrap: balance;
}

.hero-description {
  max-width: 700px;
  color: var(--text-secondary);
  font-size: 1.08rem;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.info-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.64rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 159, 67, 0.14);
  background: rgba(255, 248, 242, 0.04);
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.platform-hero-card {
  display: grid;
  gap: 1rem;
  align-self: stretch;
  padding: 1.7rem;
  min-height: 100%;
}

.platform-hero-card h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1;
}

.platform-hero-card p {
  color: var(--text-secondary);
}

.platform-mini-actions,
.entry-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.text-link {
  color: #ffe1c5;
  font-weight: 700;
}

.text-link:hover {
  color: #fff8f1;
}

.hero-stage {
  position: relative;
  min-height: 520px;
  padding: 0.5rem 0 0.5rem 1.2rem;
}

.hero-visual {
  position: absolute;
  inset: 0;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0 0 1rem 0;
  border-radius: 2rem;
  background:
    linear-gradient(rgba(255, 159, 67, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 159, 67, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at center, black 50%, transparent 92%);
}

.hero-panel {
  position: absolute;
  width: min(100%, 470px);
  padding: 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 248, 242, 0.07), rgba(255, 248, 242, 0.03));
  box-shadow: var(--shadow);
}

.hero-panel-main {
  top: 2.5rem;
  right: 0;
}

.hero-panel-float {
  bottom: 1rem;
  left: 0;
}

.hero-card-label,
.card-kicker,
.deployment-label,
.chart-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #ffcca0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-panel h2,
.section-title,
.entry-title {
  text-shadow: 0 0 24px rgba(249, 115, 22, 0.12);
}

.hero-panel h2 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  line-height: 1.1;
  margin: 0.9rem 0 1.25rem;
}

.hero-output-list {
  display: grid;
  gap: 0.85rem;
}

.hero-output-list > div,
.hero-stack li {
  padding: 0.95rem 1rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 159, 67, 0.14);
  background: rgba(255, 248, 242, 0.03);
}

.metric-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-bottom: 0.35rem;
}

.hero-stack {
  list-style: none;
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.detail-hero-grid {
  align-items: stretch;
}

.detail-hero-panels {
  display: grid;
  gap: 1.2rem;
  align-self: stretch;
}

.detail-hero-panels .hero-panel,
.detail-panel {
  position: relative;
  inset: auto;
  width: 100%;
  height: auto;
}

.output-grid,
.feature-grid,
.deployment-grid,
.footer-grid {
  display: grid;
  gap: 1.25rem;
}

.output-card,
.feature-panel,
.deployment-card {
  padding: 1.55rem;
}

.output-card h3,
.feature-head h3,
.guide-step h3,
.deployment-card h3,
.preview-side h3,
.guide-side h3 {
  font-family: var(--font-display);
  font-size: 1.32rem;
  margin: 0.45rem 0 0.7rem;
}

.output-card p,
.feature-head p,
.feature-list li,
.guide-step p,
.side-list li,
.deployment-card p,
.footer-description,
.footer-column a,
.chart-summary p,
.section-subtitle {
  color: var(--text-secondary);
}

.features-section {
  background: linear-gradient(180deg, rgba(249, 115, 22, 0), rgba(249, 115, 22, 0.035) 28%, rgba(249, 115, 22, 0));
}

.output-grid {
  grid-template-columns: 1fr;
}

.compact-grid {
  grid-template-columns: 1fr;
}

.feature-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1rem;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.15rem;
  height: 3.15rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(255, 138, 31, 0.22), rgba(255, 179, 106, 0.26));
  color: #fff1e2;
}

.feature-list,
.side-list {
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.feature-list li,
.side-list li {
  position: relative;
  padding-left: 1.15rem;
}

.feature-list li::before,
.side-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 14px rgba(249, 115, 22, 0.48);
}

.guide-shell,
.preview-shell {
  display: grid;
  gap: 1.25rem;
}

.guide-steps {
  display: grid;
  gap: 1rem;
}

.guide-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.35rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 248, 242, 0.05), rgba(255, 248, 242, 0.02));
}

.guide-side,
.preview-side {
  padding: 1.55rem;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.6rem;
  height: 2.6rem;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.14);
  border: 1px solid rgba(249, 115, 22, 0.25);
  color: #fff0e2;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
}

.preview-section {
  background: linear-gradient(180deg, rgba(255, 179, 106, 0.03), rgba(249, 115, 22, 0.02));
}

.preview-main,
.preview-side {
  padding: 1.55rem;
}

.chart-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.chart-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 44px;
  padding: 0.82rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 159, 67, 0.16);
  background: rgba(255, 248, 242, 0.04);
  color: var(--text-secondary);
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition), color var(--transition);
}

.chart-tab:hover,
.chart-tab.active {
  color: #f6fbff;
  border-color: rgba(255, 159, 67, 0.42);
  background: rgba(249, 115, 22, 0.12);
}

.chart-tab.active {
  transform: translateY(-1px);
}

.chart-panel {
  display: grid;
  gap: 1.2rem;
}

.chart-wrapper {
  min-height: 360px;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 159, 67, 0.14);
  background: radial-gradient(circle at top left, rgba(249, 115, 22, 0.08), transparent 24%), rgba(255, 255, 255, 0.02);
}

.chart-summary h3 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  margin: 0.75rem 0;
}

.chart-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.1rem;
}

.meta-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-bottom: 0.35rem;
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff0df;
}

.deployment-card strong {
  color: #ffffff;
}

.entry-card {
  display: grid;
  gap: 1.5rem;
  align-items: center;
  padding: 2rem;
  border-radius: 2rem;
  border: 1px solid rgba(255, 159, 67, 0.16);
  background:
    radial-gradient(circle at top left, rgba(255, 179, 106, 0.18), transparent 22%),
    linear-gradient(135deg, rgba(45, 28, 20, 0.96), rgba(18, 13, 12, 0.96));
  box-shadow: var(--shadow);
}

.entry-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.04;
  margin-bottom: 1rem;
}

.entry-description {
  max-width: 700px;
  color: rgba(237, 244, 255, 0.82);
}

.entry-copy {
  max-width: 720px;
}

.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(255, 159, 67, 0.12);
  background: rgba(3, 9, 20, 0.4);
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-column {
  display: grid;
  gap: 0.75rem;
}

.footer-column h3 {
  font-size: 1rem;
  color: #d9e8ff;
}

.footer-column a:hover {
  color: #ffffff;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(111, 156, 255, 0.1);
  color: var(--text-muted);
  font-size: 0.92rem;
}

.mobile-menu {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(86vw, 360px);
  transform: translateX(100%);
  transition: transform var(--transition);
  z-index: 1500;
  display: flex;
  flex-direction: column;
  background: rgba(23, 17, 15, 0.98);
  backdrop-filter: blur(20px);
  border-left: 1px solid rgba(255, 159, 67, 0.14);
  box-shadow: -20px 0 40px rgba(0, 0, 0, 0.32);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1rem;
  border-bottom: 1px solid rgba(255, 159, 67, 0.12);
}

.mobile-menu-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(255, 159, 67, 0.18);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}

.mobile-menu-nav {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}

.mobile-nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 159, 67, 0.08);
}

.mobile-nav-link.primary {
  justify-content: center;
  background: linear-gradient(135deg, rgba(255, 138, 31, 0.22), rgba(255, 179, 106, 0.22));
  color: #f7fbff;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 1600;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(2, 6, 12, 0.84);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  text-align: center;
  color: #ffffff;
}

.spinner {
  width: 3.6rem;
  height: 3.6rem;
  margin: 0 auto 1rem;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--primary);
  border-radius: 999px;
  animation: spin 0.9s linear infinite;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 360ms ease, transform 360ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

@media (min-width: 768px) {
  .navbar-menu {
    display: flex;
  }

  .navbar-toggle {
    display: none;
  }

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

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

  .chart-panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  }

  .entry-card {
    grid-template-columns: minmax(0, 1.55fr) auto;
    padding: 2.7rem 3rem;
  }
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(460px, 0.95fr);
  }

  .guide-shell,
  .preview-shell {
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.78fr);
  }
}

@media (max-width: 1023px) {
  .hero-stage {
    min-height: 480px;
    padding-left: 0;
  }

  .hero-panel {
    position: relative;
    width: 100%;
  }

  .hero-panel-main,
  .hero-panel-float {
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    margin-bottom: 1rem;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 4.25rem 0;
  }

  .hero {
    padding-top: 4.5rem;
  }

  .hero-actions .btn,
  .chart-tab,
  .entry-actions .btn {
    width: 100%;
  }

  .chart-meta {
    grid-template-columns: 1fr;
  }

  .feature-head,
  .guide-step {
    grid-template-columns: 1fr;
  }
}