:root {
  --color-primary: #f07828;
  --color-primary-hover: #d8681e;
  --color-background: #e8e0d8;
  --color-surface: #ffffff;
  --color-surface-alt: #f0ebe6;
  --color-foreground: #2d3e44;
  --color-muted: #5a6f76;
  --color-accent-cyan: #3a9ab5;
  --color-border: #c1c0bc;
  --color-grid: #d4d0cc;
  --color-line: rgba(105, 123, 140, 0.4);
  --color-plot-bg: #ffffff;
  --color-plot-3d-bg: #f5f0eb;
  --color-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --color-shadow-md: 0 6px 18px rgba(0, 0, 0, 0.09);
  --color-shadow: 0 8px 24px rgba(31, 41, 51, 0.08);

  --primary: var(--color-primary);
  --primary-hover: var(--color-primary-hover);
  --background: var(--color-background);
  --bg: var(--color-background);
  --surface: var(--color-surface);
  --surface-alt: var(--color-surface-alt);
  --text: var(--color-foreground);
  --text-muted: var(--color-muted);
  --accent-cyan: var(--color-accent-cyan);
  --border: var(--color-border);
  --grid: var(--color-grid);
  --line: var(--color-line);
  --plot-bg: var(--color-plot-bg);
  --plot-3d-bg: var(--color-plot-3d-bg);
  --shadow-sm: var(--color-shadow-sm);
  --shadow-md: var(--color-shadow-md);
  --shadow: var(--color-shadow);

  --font-ui: "Lora", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

[data-theme="dark"],
body.dark {
  --color-primary: #f07828;
  --color-primary-hover: #ff923e;
  --color-background: #1e2c31;
  --color-surface: #283a40;
  --color-surface-alt: #2d3e44;
  --color-foreground: #d4d0cc;
  --color-muted: #8fa3ab;
  --color-accent-cyan: #58c4dd;
  --color-border: #3d5058;
  --color-grid: #3d5058;
  --color-line: rgba(184, 203, 220, 0.35);
  --color-plot-bg: #283a40;
  --color-plot-3d-bg: #243338;
  --color-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --color-shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45);
  --color-shadow: 0 10px 28px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  width: 100%;
  overflow-x: hidden;
}

body {
  color: var(--text);
  background: var(--bg);
  font-family: var(--font-ui);
  line-height: 1.35;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.lightbox-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

button {
  color: inherit;
  font: inherit;
}

:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--primary) 72%, white);
  outline-offset: 3px;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1360px, calc(100% - 32px));
  margin: 0 auto;
  padding: 14px 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
}

.brand,
.brand-lockup,
.brand-credit,
.nav-links,
.tool-summary {
  display: flex;
  align-items: center;
}

.brand,
.brand-credit,
.nav-links a,
.tool-summary-link,
.btn {
  text-decoration: none;
}

.brand-name,
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0;
}

.brand-name {
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
}

.brand-lockup {
  min-width: 0;
  gap: 10px;
  flex-wrap: wrap;
}

.brand-credit {
  gap: 7px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: color 0.16s ease;
}

.brand-credit:hover,
.brand-credit:focus-visible {
  color: var(--primary);
}

.nav-links {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links > a,
.theme-toggle,
.btn {
  min-height: 36px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: color-mix(in srgb, var(--surface) 86%, var(--surface-alt));
  box-shadow: var(--shadow-sm);
  font-size: 13px;
  font-weight: 700;
  transition: border-color 0.16s ease, background 0.16s ease, transform 0.16s ease;
}

.nav-links > a,
.btn {
  padding: 8px 11px;
}

.nav-links > a[aria-current="page"] {
  border-color: color-mix(in srgb, var(--primary) 52%, var(--border));
  background: color-mix(in srgb, var(--primary) 14%, var(--surface));
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  padding: 0;
  cursor: pointer;
  font-size: 17px;
  line-height: 1;
}

.theme-toggle span {
  display: block;
  line-height: 1;
}

.youtube-icon {
  position: relative;
  width: 20px;
  height: 14px;
  flex: 0 0 auto;
  border-radius: 4px;
  background: #ff0033;
}

.youtube-icon::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 7px;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 7px solid #fff7f0;
}

.hero-section,
.tools-section,
.pricing-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}

.home-layout {
  display: grid;
  grid-template-columns: minmax(520px, 0.58fr) minmax(420px, 0.42fr);
  gap: 24px;
  align-items: stretch;
  width: min(1360px, calc(100% - 32px));
  height: calc(100dvh - 72px);
  margin: 0 auto;
  padding: 28px 0 0;
  overflow: hidden;
}

.home-layout .hero-section,
.home-layout .tools-section {
  width: 100%;
  margin: 0;
  padding: 0;
}

.home-layout .hero-section {
  min-height: 0;
  align-content: start;
}

.home-layout .tools-section {
  min-height: 0;
  overflow-y: auto;
  padding-top: calc(clamp(1.8rem, 3.5vw, 3rem) - 19px);
  padding-right: 10px;
  padding-bottom: 28px;
  scrollbar-color: color-mix(in srgb, var(--text-muted) 46%, transparent) transparent;
  scrollbar-width: thin;
}

.hero-section {
  display: grid;
  gap: 14px;
  padding: 28px 0 18px;
}

.intro-video,
.tool-card,
.pricing-shell {
  border: 1px solid color-mix(in srgb, var(--border) 86%, transparent);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 1px 2px rgba(18, 24, 28, 0.06), 0 10px 24px rgba(18, 24, 28, 0.04);
}

.intro-heading h1 {
  color: var(--text);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  line-height: 1;
  letter-spacing: 0;
}

.pricing-shell h1 {
  color: var(--text);
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
}

.intro-heading .mono {
  font-weight: 700;
}

.pricing-shell p {
  max-width: 640px;
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  cursor: pointer;
}

.nav-links > a:hover,
.theme-toggle:hover,
.btn:hover {
  border-color: color-mix(in srgb, var(--primary) 62%, var(--border));
  background: color-mix(in srgb, var(--surface-alt) 56%, var(--surface));
  transform: translateY(-1px);
}

.intro-video {
  min-height: 0;
  overflow: hidden;
  padding: 12px;
}

.video-frame {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: min(460px, calc(100dvh - 230px));
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 7px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface-alt) 78%, var(--surface)), var(--surface)),
    var(--surface-alt);
}

.video-frame::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--border));
  border-radius: 7px;
}

.video-frame p {
  position: absolute;
  bottom: 20px;
  left: 20px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
}

.play-button {
  width: 74px;
  height: 74px;
  border: 1px solid color-mix(in srgb, var(--primary) 54%, var(--border));
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 78%, var(--primary));
  box-shadow: var(--shadow-md);
}

.play-button::after {
  content: "";
  display: block;
  margin: 22px 0 0 29px;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
  border-left: 21px solid var(--primary);
}

.tools-section {
  padding: 28px 0 44px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.eyebrow {
  margin-bottom: 4px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading h2 {
  color: var(--text);
  font-size: 32px;
  line-height: 1;
}

.tool-list {
  display: grid;
  gap: 14px;
}

.tool-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 16px;
}

.tool-summary {
  align-items: flex-start;
  gap: 13px;
  min-width: 0;
}

.tool-summary-link {
  margin: -6px;
  padding: 6px;
  border-radius: 7px;
  color: var(--text);
  transition: background 0.16s ease, transform 0.16s ease;
}

.tool-summary-link:hover,
.tool-summary-link:focus-visible {
  background: color-mix(in srgb, var(--primary) 8%, transparent);
  transform: translateY(-1px);
}

.tool-logo,
.tool-logo-mark,
.stack-logo {
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
}

.tool-logo {
  object-fit: contain;
}

.tool-logo-mark {
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--primary) 42%, var(--border));
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface-alt) 78%, var(--surface));
}

.paview-logo {
  background:
    radial-gradient(circle at 50% 50%, #f07828 0 9%, transparent 10%),
    conic-gradient(from 45deg, #1d7fa3, #2fc6c1, #f07828, #7b2fb8, #1d7fa3);
  clip-path: polygon(50% 4%, 58% 30%, 84% 18%, 70% 44%, 96% 50%, 70% 56%, 84% 82%, 58% 70%, 50% 96%, 42% 70%, 16% 82%, 30% 56%, 4% 50%, 30% 44%, 16% 18%, 42% 30%);
}

.snpview-logo {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 23px;
  font-weight: 700;
}

.snpview-logo::before {
  content: "S";
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px dashed color-mix(in srgb, var(--accent-cyan) 72%, var(--border));
  border-radius: 999px;
}

.cascade-logo::before {
  content: "";
  border-top: 14px solid transparent;
  border-bottom: 14px solid transparent;
  border-left: 23px solid var(--primary);
  transform: translateX(2px);
}

.tool-summary h3 {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 25px;
  line-height: 1.05;
  letter-spacing: 0;
}

.tool-summary p:not(.eyebrow) {
  margin-top: 9px;
  color: var(--text-muted);
  font-size: 15px;
}

.media-strip {
  display: grid;
  grid-auto-columns: clamp(360px, 78%, 480px);
  grid-auto-flow: column;
  gap: 10px;
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding: 2px 2px 10px;
  scroll-snap-type: x proximity;
  scrollbar-color: color-mix(in srgb, var(--text-muted) 46%, transparent) transparent;
}

.media-card {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface-alt) 74%, var(--surface));
  cursor: zoom-in;
  scroll-snap-align: start;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.media-card:hover,
.media-card:focus-visible {
  border-color: color-mix(in srgb, var(--primary) 58%, var(--border));
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.media-card:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--primary) 72%, white);
  outline-offset: 3px;
}

.image-card img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  object-position: center;
  background: var(--plot-3d-bg);
}

.media-card figcaption {
  position: absolute;
  left: 10px;
  bottom: 10px;
  max-width: calc(100% - 20px);
  padding: 6px 8px;
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.video-card {
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface-alt) 80%, var(--surface)), var(--surface)),
    var(--surface-alt);
}

.video-card .play-button {
  width: 58px;
  height: 58px;
}

.video-card .play-button::after {
  margin: 16px 0 0 23px;
  border-top-width: 12px;
  border-bottom-width: 12px;
  border-left-width: 17px;
}

.mock-card {
  padding: 16px;
}

.mock-toolbar {
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}

.mock-plot {
  position: absolute;
  inset: 58px 16px 52px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    var(--plot-bg);
  background-size: 34px 28px;
}

.mock-plot.traces::before,
.mock-plot.traces::after {
  content: "";
  position: absolute;
  inset: 26px 22px 38px;
  border-bottom: 4px solid var(--primary);
  border-radius: 48% 52% 45% 55%;
  transform: rotate(-5deg);
}

.mock-plot.traces::after {
  inset: 45px 22px 28px;
  border-color: var(--accent-cyan);
  transform: rotate(7deg);
}

.smith-chart {
  position: absolute;
  inset: 28px 48px 52px;
  border: 2px solid var(--primary);
  border-radius: 999px;
  background:
    radial-gradient(circle, transparent 35%, color-mix(in srgb, var(--accent-cyan) 18%, transparent) 36%, transparent 38%),
    radial-gradient(circle at 64% 50%, transparent 24%, color-mix(in srgb, var(--primary) 24%, transparent) 25%, transparent 27%),
    var(--surface);
}

.smith-chart::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 9%;
  width: 82%;
  border-top: 2px solid color-mix(in srgb, var(--text-muted) 50%, transparent);
}

.stage-row {
  width: 88%;
  height: 48px;
  margin: 18px auto 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
  opacity: 0.75;
}

.stage-row.short {
  width: 64%;
  margin-top: 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 20px auto 0;
  width: 88%;
}

.metric-grid span {
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}

.mock-plot.bars {
  display: flex;
  align-items: end;
  gap: 12px;
  padding: 24px;
}

.mock-plot.bars::before,
.mock-plot.bars::after {
  content: "";
  width: 30%;
  border-radius: 6px 6px 0 0;
  background: var(--primary);
}

.mock-plot.bars::before {
  height: 74%;
}

.mock-plot.bars::after {
  height: 48%;
  background: var(--accent-cyan);
}

.stack-logo {
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 8px;
  border: 1px solid color-mix(in srgb, var(--primary) 42%, var(--border));
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface-alt) 78%, var(--surface));
}

.stack-logo span,
.stack-preview span,
.impedance-lines span {
  display: block;
}

.stack-logo span {
  height: 4px;
  border-radius: 2px;
  background: var(--primary);
}

.stack-logo span:nth-child(2) {
  background: var(--accent-cyan);
}

.stack-logo span:nth-child(3) {
  background: #c87533;
}

.stack-preview {
  display: grid;
  gap: 8px;
  margin: 28px auto 0;
  width: 86%;
}

.stack-preview span {
  height: 18px;
  border-radius: 4px;
  background: var(--primary);
}

.stack-preview span:nth-child(even) {
  background: var(--accent-cyan);
}

.stack-preview span:nth-child(3) {
  height: 34px;
  background: #c87533;
}

.impedance-lines {
  display: grid;
  gap: 18px;
  margin: 46px auto 0;
  width: 78%;
}

.impedance-lines span {
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
}

.impedance-lines span:nth-child(2) {
  width: 72%;
}

.impedance-lines span:nth-child(3) {
  width: 46%;
}

.pricing-shell {
  min-height: calc(100vh - 120px);
  margin-top: 28px;
  padding: clamp(24px, 5vw, 56px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 18px;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: color-mix(in srgb, var(--bg) 32%, rgba(0, 0, 0, 0.72));
  cursor: zoom-out;
}

.lightbox-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
  width: min(1120px, 96vw);
  max-height: 92vh;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 24px 80px rgb(0 0 0 / 0.32);
}

.lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.lightbox-caption {
  min-width: 0;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
}

.lightbox-close {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 7px 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: color-mix(in srgb, var(--surface) 86%, var(--surface-alt));
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

.lightbox-close:hover {
  border-color: color-mix(in srgb, var(--primary) 62%, var(--border));
  background: color-mix(in srgb, var(--surface-alt) 56%, var(--surface));
}

.lightbox-stage {
  position: relative;
  display: grid;
  min-height: 0;
}

.lightbox-content {
  display: grid;
  place-items: center;
  min-height: 0;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface-alt) 70%, var(--surface));
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 42px;
  height: 58px;
  border: 1px solid color-mix(in srgb, var(--border) 76%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--text);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  box-shadow: var(--shadow-md);
}

.lightbox-nav:hover,
.lightbox-nav:focus-visible {
  border-color: color-mix(in srgb, var(--primary) 64%, var(--border));
  background: color-mix(in srgb, var(--surface-alt) 56%, var(--surface));
}

.lightbox-nav:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--primary) 72%, white);
  outline-offset: 3px;
}

.lightbox-nav[hidden] {
  display: none;
}

.lightbox-nav-previous {
  left: 12px;
}

.lightbox-nav-next {
  right: 12px;
}

.lightbox-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 76vh;
  object-fit: contain;
}

.lightbox-clone {
  width: min(900px, 100%);
  min-height: min(58vh, 560px);
  cursor: default;
  transform: none;
}

.lightbox-clone:hover,
.lightbox-clone:focus-visible {
  border-color: var(--border);
  box-shadow: none;
  transform: none;
}

@media (max-width: 980px) {
  .home-layout {
    grid-template-columns: 1fr;
    gap: 18px;
    height: auto;
    overflow: visible;
  }

  .home-layout .tools-section {
    overflow-y: visible;
    padding-top: 0;
    padding-right: 0;
    padding-bottom: 0;
  }

  .tool-card {
    grid-template-columns: 1fr;
  }

  .video-frame {
    min-height: 316px;
  }

  .media-strip {
    grid-auto-columns: clamp(300px, 86%, 420px);
  }
}

@media (max-width: 680px) {
  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    width: min(100% - 20px, 1200px);
  }

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

  .hero-section,
  .tools-section,
  .home-layout,
  .pricing-shell {
    width: min(100% - 20px, 1200px);
  }

  .home-layout {
    padding-top: 12px;
  }

  .intro-heading h1,
  .pricing-shell h1 {
    font-size: clamp(2.4rem, 14vw, 4rem);
  }

  .intro-video,
  .tool-card,
  .pricing-shell {
    padding: 12px;
  }

  .tool-summary {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
  }

  .media-strip {
    grid-auto-columns: clamp(260px, 88%, 360px);
  }

  .media-card {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}