:root {
  --bg: #07111b;
  --panel: rgba(10, 22, 35, 0.82);
  --panel-strong: rgba(12, 26, 41, 0.94);
  --panel-soft: rgba(14, 30, 47, 0.72);
  --line: rgba(157, 196, 255, 0.16);
  --line-strong: rgba(157, 196, 255, 0.28);
  --text: #f3f8fe;
  --muted: #9cb3c8;
  --cyan: #64daf8;
  --blue: #5d84ff;
  --green: #68e1a8;
  --ink: #07111b;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.34);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content-width: min(1180px, calc(100vw - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: 'IBM Plex Sans KR', 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at 0% 0%, rgba(93, 132, 255, 0.22), transparent 26%),
    radial-gradient(circle at 100% 0%, rgba(100, 218, 248, 0.14), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(104, 225, 168, 0.08), transparent 24%),
    linear-gradient(180deg, #07111b 0%, #091522 36%, #061019 100%);
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(circle at center, black 42%, transparent 88%);
  opacity: 0.25;
}

a { color: inherit; text-decoration: none; }
.page-shell { width: var(--content-width); margin: 0 auto; padding: 24px 0 72px; }

.topbar {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(6, 16, 25, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}
.brand { display: inline-flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  background: linear-gradient(135deg, var(--cyan), #98ecff);
  box-shadow: 0 14px 30px rgba(100, 218, 248, 0.32);
}
.brand strong {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.18rem;
}
.brand-kicker {
  margin: 0 0 2px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.topnav { display: flex; gap: 18px; flex-wrap: wrap; }
.topnav a { color: var(--muted); font-size: 0.95rem; }
.topnav a:hover { color: var(--text); }

main { display: grid; gap: 28px; margin-top: 28px; }
.panel, .section, .signal-strip {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(430px, 0.98fr);
  gap: 24px;
  align-items: stretch;
}
.hero-copy, .hero-visual, .section { padding: 40px; }
.section-kicker {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.hero-copy h1,
.section-heading h2,
.evidence-heading h2,
.download-callout h2 {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.03em;
}
.hero-copy h1 {
  max-width: 12ch;
  font-size: clamp(2.42rem, 3.8vw, 4rem);
  line-height: 1.02;
}
.lead {
  max-width: 60ch;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.85;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.18);
}
.button-primary {
  color: var(--ink);
  border: none;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}
.button-primary-hero {
  min-width: 220px;
  box-shadow: 0 20px 45px rgba(93, 132, 255, 0.34);
}
.button-secondary { background: rgba(255,255,255,0.02); }
.button-large { min-width: 220px; }

.hero-proof-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.hero-proof-list span,
.download-points span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(189, 220, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
}
.hero-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}
.hero-summary-grid article {
  display: grid;
  gap: 7px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}
.hero-summary-grid span {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.hero-summary-grid strong {
  display: block;
  font-size: 0.98rem;
  line-height: 1.5;
}

.hero-visual {
  background:
    radial-gradient(circle at top right, rgba(100, 218, 248, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(12, 26, 41, 0.96), rgba(7, 16, 24, 0.98));
}
.mock-browser {
  min-height: 500px;
  height: 100%;
  border: 1px solid rgba(189, 220, 255, 0.16);
  border-radius: 28px;
  background: rgba(6, 15, 23, 0.92);
  overflow: hidden;
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(189, 220, 255, 0.1);
}
.browser-dots { display: flex; gap: 8px; }
.browser-dots span {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  background: rgba(255,255,255,0.24);
}
.browser-path {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}
.browser-dashboard {
  display: grid;
  gap: 16px;
  padding: 18px;
}
.mock-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.toolbar-chip, .toolbar-state, .canvas-label, .signal-label, .edition-eyebrow, .evidence-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.toolbar-chip {
  background: rgba(255,255,255,0.04);
  color: var(--muted);
}
.toolbar-chip.active,
.canvas-label,
.signal-label,
.edition-eyebrow,
.evidence-kicker {
  background: rgba(100, 218, 248, 0.12);
  color: var(--cyan);
}
.toolbar-state {
  margin-left: auto;
  background: rgba(104, 225, 168, 0.12);
  color: var(--green);
}
.canvas-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 14px;
}
.canvas-panel,
.workflow-card,
.trust-grid article,
.download-support-card,
.edition-card,
.compare-surface {
  border: 1px solid rgba(189,220,255,0.12);
  border-radius: 22px;
  background: rgba(15, 30, 46, 0.9);
}
.canvas-panel {
  display: grid;
  gap: 16px;
  padding: 18px;
}
.discovery-panel, .topology-panel { min-height: 220px; }
.nms-panel {
  grid-column: 1 / -1;
  background: linear-gradient(180deg, rgba(12, 28, 43, 0.96), rgba(8, 18, 28, 0.96));
}
.canvas-heading {
  display: grid;
  gap: 10px;
}
.canvas-heading strong,
.edition-card h3,
.workflow-card h3,
.evidence-head h3,
.download-support-card h3,
.trust-grid h3 {
  font-family: 'Space Grotesk', sans-serif;
}
.canvas-heading strong { font-size: 1.1rem; }
.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.metric-card {
  padding: 12px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(189,220,255,0.08);
}
.metric-card span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.metric-card strong {
  display: block;
  margin-top: 6px;
  font-size: 1.28rem;
}
.device-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.device-list span {
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.03);
  color: var(--text);
  font-size: 0.9rem;
}
.topology-stage {
  position: relative;
  min-height: 164px;
  border-radius: 18px;
  background:
    radial-gradient(circle at center, rgba(93, 132, 255, 0.1), transparent 48%),
    linear-gradient(180deg, rgba(10, 22, 33, 0.95), rgba(8, 17, 25, 0.96));
  overflow: hidden;
}
.topology-node {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 76px;
  height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(189,220,255,0.18);
  background: rgba(7, 16, 24, 0.92);
  font-size: 0.82rem;
  font-weight: 700;
}
.node-core { top: 20px; left: calc(50% - 40px); }
.node-dist { top: 76px; left: calc(50% - 36px); }
.node-edge-a { bottom: 20px; left: 24px; }
.node-edge-b { bottom: 20px; right: 24px; }
.topology-link {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, rgba(100,218,248,0.15), rgba(100,218,248,0.95), rgba(100,218,248,0.15));
  transform-origin: left center;
}
.link-core { width: 2px; height: 34px; top: 56px; left: calc(50% - 1px); }
.link-left { width: 148px; top: 108px; left: calc(50% - 74px); transform: rotate(27deg); }
.link-right { width: 148px; top: 108px; left: calc(50% - 74px); transform: rotate(-27deg); }
.topology-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.topology-meta span {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}
.diagnosis-stack {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.diag-card {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
}
.diag-card span {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.diag-card strong {
  line-height: 1.45;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 14px;
}
.signal-strip article {
  display: grid;
  gap: 8px;
  min-height: 132px;
  padding: 16px 18px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}
.signal-strip strong {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.04rem;
}
.signal-strip p,
.section-heading p,
.evidence-heading p,
.edition-card p,
.workflow-card p,
.download-support-card p,
.trust-grid p,
.download-callout p,
.footer p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.section-heading,
.evidence-heading { max-width: 780px; }
.section-heading.compact { max-width: 720px; }
.section-heading h2,
.evidence-heading h2,
.download-callout h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.08;
}
.section-editions,
.workflow-section,
.trust-section,
.download-section {
  display: grid;
  gap: 30px;
}
.edition-showcase,
.workflow-grid,
.evidence-grid,
.trust-grid,
.download-support-grid {
  display: grid;
  gap: 18px;
}
.edition-showcase { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.edition-card {
  display: grid;
  gap: 14px;
  padding: 24px;
}
.edition-card h3,
.workflow-card h3,
.evidence-head h3,
.download-support-card h3,
.trust-grid h3 {
  margin: 0;
  font-size: 1.28rem;
}
.evidence-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}
.edition-free {
  background: linear-gradient(180deg, rgba(14, 30, 47, 0.95), rgba(8, 18, 28, 0.95));
}
.edition-pro {
  background: linear-gradient(180deg, rgba(30, 27, 13, 0.94), rgba(18, 16, 8, 0.94));
}
.edition-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.compare-surface { overflow-x: auto; }
.compare-table { width: 100%; min-width: 680px; border-collapse: collapse; }
.compare-table th, .compare-table td {
  padding: 16px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.compare-table th {
  color: var(--cyan);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.workflow-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.workflow-card,
.download-support-card,
.trust-grid article {
  display: grid;
  gap: 12px;
  padding: 22px;
  border-radius: 22px;
  background: var(--panel-soft);
}
.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(93, 132, 255, 0.18);
  color: var(--cyan);
  font-weight: 700;
}
.evidence-grid {
  grid-template-columns: 1fr;
  align-items: start;
}
.evidence-card {
  padding: 24px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 24, 37, 0.95), rgba(7, 17, 27, 0.95));
}
.evidence-card-shot {
  display: grid;
  gap: 20px;
}
.evidence-card-wide {
  grid-column: auto;
}
.evidence-head {
  display: grid;
  gap: 12px;
  align-content: start;
  max-width: 76ch;
}
.evidence-shot {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(189,220,255,0.12);
  border-radius: 22px;
  background-color: rgba(6, 15, 23, 0.94);
  background-repeat: no-repeat;
  background-origin: border-box;
  background-size: cover;
  background-position: center top;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}
.evidence-shot img {
  display: none;
}
.evidence-card-shot .evidence-shot {
  height: 500px;
}
.evidence-shot-wide {
  height: 560px;
}
.evidence-shot--discovery {
  background-image: url("./assets/screenshots/discovery-focus.png");
  background-position: center top;
}
.evidence-shot--topology {
  background-image: url("./assets/screenshots/topology-focus.png");
  background-position: center top;
}
.evidence-shot--diagnosis {
  background-image: url("./assets/screenshots/diagnosis-focus.png");
  background-position: center top;
}
.trust-grid,
.download-support-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.download-callout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 32px;
  border-radius: 28px;
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(circle at top right, rgba(100, 218, 248, 0.15), transparent 32%),
    linear-gradient(135deg, rgba(93, 132, 255, 0.24), rgba(100, 218, 248, 0.08));
}
.download-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.download-actions {
  display: grid;
  gap: 12px;
  min-width: 240px;
}
.contact-card {
  background: linear-gradient(180deg, rgba(32, 26, 10, 0.94), rgba(15, 14, 8, 0.94));
}
.footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-top: 22px;
  padding: 6px 4px 0;
}
.footer strong {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  margin-bottom: 6px;
}
.footer-note { text-align: right; }

@media (max-width: 1180px) {
  .hero-summary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1140px) {
  .hero-grid,
  .edition-showcase,
  .workflow-grid,
  .evidence-grid,
  .trust-grid,
  .download-support-grid,
  .signal-strip,
  .download-callout,
  .canvas-grid,
  .diagnosis-stack {
    grid-template-columns: 1fr;
  }
  .hero-copy h1 { max-width: none; }
  .toolbar-state { margin-left: 0; }
  .download-callout { justify-items: start; }
  .download-actions { width: 100%; min-width: 0; }
  
}

@media (max-width: 860px) {
  .page-shell { width: min(100vw - 24px, 100%); padding-top: 16px; }
  .topbar { position: static; border-radius: 28px; padding: 16px; }
  .topnav { display: none; }
  .hero-copy, .hero-visual, .section { padding: 24px; }
  .metric-row, .device-list { grid-template-columns: 1fr 1fr; }
  .mock-browser { min-height: 440px; }
  .signal-strip article { min-height: 0; }
  .evidence-card-shot .evidence-shot,
  .evidence-shot-wide { height: 420px; }
}

@media (max-width: 640px) {
  .page-shell { width: min(100vw - 18px, 100%); }
  .hero-copy h1 { font-size: 2.15rem; line-height: 1.04; }
  .lead,
  .signal-strip p,
  .section-heading p,
  .evidence-heading p,
  .edition-card p,
  .workflow-card p,
  .download-support-card p,
  .trust-grid p,
  .download-callout p {
    font-size: 0.97rem;
  }
  .hero-actions,
  .hero-proof-list,
  .download-points {
    flex-direction: column;
  }
  .hero-summary-grid { grid-template-columns: 1fr; }
  .hero-summary-grid article,
  .button,
  .button-large {
    width: 100%;
  }
  .metric-row,
  .device-list { grid-template-columns: 1fr; }
  .download-callout { padding: 24px; }
  .evidence-card-shot .evidence-shot { height: 300px; }
  .evidence-shot-wide { height: 340px; }
  .footer { flex-direction: column; align-items: flex-start; }
  .footer-note { text-align: left; }
}

/* final evidence layout override */
.evidence-grid {
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 28px !important;
  align-items: start !important;
}
.evidence-card {
  display: grid !important;
  gap: 20px !important;
  padding: clamp(22px, 2.5vw, 30px) !important;
}
.evidence-card-shot,
.evidence-card-wide {
  grid-column: auto !important;
}
.evidence-head {
  max-width: 84ch !important;
}
.evidence-shot,
.evidence-card-shot .evidence-shot,
.evidence-shot-wide,
.evidence-shot--discovery,
.evidence-shot--topology,
.evidence-shot--diagnosis {
  background: none !important;
  background-image: none !important;
  height: auto !important;
  min-height: 0 !important;
}
.evidence-shot {
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid rgba(189, 220, 255, 0.12);
  background-color: rgba(6, 15, 23, 0.94) !important;
  padding: 0;
}
.evidence-shot img {
  display: block !important;
  width: 100% !important;
  height: auto !important;
  max-width: 100%;
  object-fit: contain !important;
}
@media (max-width: 860px) {
  .evidence-grid {
    gap: 22px !important;
  }
  .evidence-card {
    padding: 20px !important;
  }
}
@media (max-width: 640px) {
  .evidence-card {
    gap: 16px !important;
    padding: 18px !important;
  }
}