:root {
  --paper: #f2f5f9;
  --ink: #0f1b2d;
  --axis: #5b6b7c;
  --line: #c9d4e2;
  --cyan: #0e8fad;
  --cyan-deep: #0a6b82;
  --amber: #c97812;
  --plot: #1f9a78;
  --white: #ffffff;
  --panel: #ffffff;
  --font-display: "Bahnschrift", "Segoe UI Semibold", "DIN Alternate", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Cascadia Mono", "Consolas", "Microsoft YaHei", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(14, 143, 173, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 143, 173, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(91, 107, 124, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 107, 124, 0.05) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  background-position: -1px -1px;
  line-height: 1.65;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(1140px, calc(100% - 2rem)); margin: 0 auto; }

.axis-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
  background: rgba(242, 245, 249, 0.92);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--axis);
  letter-spacing: 0.04em;
  position: sticky;
  top: 0;
  z-index: 60;
}
.axis-bar b { color: var(--cyan-deep); }
.ticks { display: flex; gap: 1.2rem; overflow: auto; }

.lab-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0 1rem;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-display);
}
.brand .mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--cyan);
  color: #fff;
  font-weight: 800;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}
.brand strong { font-size: 1.2rem; letter-spacing: 0.04em; }
.brand em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--axis);
}
.nav { display: flex; flex-wrap: wrap; gap: 0.85rem; }
.nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--axis);
  border-bottom: 1px solid transparent;
}
.nav a.on, .nav a:hover { color: var(--cyan-deep); border-color: var(--cyan); }
.coord-chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--cyan);
  color: var(--cyan-deep);
  background: rgba(14, 143, 173, 0.08);
  white-space: nowrap;
}

/* Hero: stacked full-bleed + bottom conversion dock — NOT side-by-side */
.hero-plot {
  padding-bottom: 1.5rem;
}
.plot-stage {
  position: relative;
  border: 1px solid var(--ink);
  background: var(--white);
  overflow: hidden;
}
.plot-stage .x-label,
.plot-stage .y-label {
  position: absolute;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan-deep);
  background: rgba(255,255,255,0.85);
  padding: 0.15rem 0.4rem;
}
.plot-stage .x-label { right: 10px; bottom: 10px; }
.plot-stage .y-label { left: 10px; top: 10px; writing-mode: vertical-rl; }
.hero-media {
  align-self: center;
  margin: 0;
  padding: 0;
  height: auto;
  overflow: visible;
  position: relative;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(14,143,173,0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,143,173,0.18) 1px, transparent 1px);
  background-size: 48px 48px;
  mix-blend-mode: multiply;
}
.hero-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  margin: 0;
  padding: 0;
  min-height: 0;
  max-height: none;
  clip-path: none;
  transform: none;
}
.dock {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0;
  border: 1px solid var(--ink);
  border-top: 0;
  background: var(--panel);
}
.dock-main {
  padding: 1.35rem 1.4rem 1.5rem;
  border-right: 1px solid var(--line);
}
.dock-main .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.08em;
  margin-bottom: 0.45rem;
}
.dock-main h1 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.lead { margin: 0 0 1rem; color: var(--axis); max-width: 40rem; }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 0.9rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  min-height: 44px;
  padding: 0.65rem 1.05rem;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 700;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  border: 1px solid var(--ink);
  transition: background 0.15s ease, color 0.15s ease;
}
.btn-fill { background: var(--cyan); color: #fff; border-color: var(--cyan-deep); }
.btn-fill:hover { background: var(--cyan-deep); }
.btn-line { background: #fff; color: var(--ink); }
.btn-line:hover { background: #e8f6fa; }
.btn-amber { background: var(--amber); color: #fff; border-color: #a8620d; }
.req {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}
.req p {
  margin: 0;
  padding: 0.55rem 0.65rem;
  border: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--axis);
}
.req b { color: var(--ink); display: block; margin-bottom: 0.1rem; }
.dock-side {
  padding: 1.2rem 1.1rem;
  background:
    linear-gradient(180deg, rgba(14,143,173,0.08), transparent 40%),
    #fbfcfe;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.dock-side h2 {
  margin: 0 0 0.7rem;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--cyan-deep);
  font-family: var(--font-mono);
  font-weight: 700;
}
.spark {
  display: grid;
  gap: 0.45rem;
}
.spark div {
  display: grid;
  grid-template-columns: 72px 1fr 40px;
  gap: 0.45rem;
  align-items: center;
}
.spark i {
  height: 8px;
  background: linear-gradient(90deg, var(--cyan), var(--plot));
  display: block;
}
.spark span:last-child { text-align: right; color: var(--ink); font-weight: 700; }

.sec { padding: 2.6rem 0; }
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--ink);
}
.sec-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
}
.sec-head p { margin: 0; color: var(--axis); max-width: 34rem; font-size: 0.95rem; }
.sec-head .k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan-deep);
  letter-spacing: 0.12em;
}

/* Download as DATA TABLE — not four cards */
.dataset {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border: 1px solid var(--ink);
  font-size: 0.92rem;
}
.dataset th,
.dataset td {
  padding: 0.95rem 0.9rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}
.dataset th {
  background: #e8eef5;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--axis);
}
.dataset tr:last-child td { border-bottom: 0; }
.dataset tr:hover td { background: rgba(14,143,173,0.06); }
.dataset .os {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}
.dataset .btn { min-width: 120px; min-height: 38px; padding: 0.45rem 0.8rem; }

/* Features as Y-axis plot */
.y-plot {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0;
  border: 1px solid var(--ink);
  background: var(--white);
  min-height: 320px;
}
.y-axis {
  border-right: 1px solid var(--ink);
  background: #eef3f8;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--axis);
}
.plot-rows { display: grid; }
.plot-row {
  display: grid;
  grid-template-columns: 28px 1.1fr 1.4fr;
  gap: 0.75rem;
  align-items: center;
  padding: 0.95rem 1rem;
  border-bottom: 1px dashed var(--line);
  position: relative;
}
.plot-row:last-child { border-bottom: 0; }
.plot-row .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(14,143,173,0.18);
  justify-self: center;
}
.plot-row h3 {
  margin: 0;
  font-size: 1rem;
  font-family: var(--font-display);
}
.plot-row p { margin: 0; color: var(--axis); font-size: 0.9rem; }
.plot-row::before {
  content: "";
  position: absolute;
  left: 33px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(14,143,173,0.35);
}

/* Solution as dashboard widgets — images as panels */
.dash {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 0.85rem;
}
.legend {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: rgba(255,255,255,0.86);
  padding: 1.35rem 1.2rem;
}
.legend .k { color: #7dd3e8; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; }
.legend h2 {
  margin: 0.4rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: #fff;
}
.legend p { margin: 0 0 0.8rem; color: rgba(255,255,255,0.75); font-size: 0.95rem; }
.widgets {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  grid-template-rows: auto auto;
  gap: 0.75rem;
}
.frame {
  margin: 0;
  padding: 0;
  border: 1px solid var(--ink);
  background: #fff;
  overflow: hidden;
}
.frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  margin: 0;
  padding: 0;
}
.widgets .frame:first-child { grid-row: 1 / span 2; }

/* Trust as KPI strip */
.kpi {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  border: 1px solid var(--ink);
  background: var(--white);
}
.kpi-num {
  padding: 1.5rem 1.2rem;
  border-right: 1px solid var(--ink);
  background: linear-gradient(160deg, #e7f6fa, #fff);
}
.kpi-num .k { font-family: var(--font-mono); font-size: 0.72rem; color: var(--cyan-deep); letter-spacing: 0.1em; }
.kpi-num strong {
  display: block;
  margin: 0.35rem 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  color: var(--ink);
}
.kpi-num strong em { font-style: normal; color: var(--cyan-deep); }
.kpi-num p { margin: 0; color: var(--axis); }
.kpi-brands {
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  gap: 0.55rem;
  padding: 1.2rem;
}
.kpi-brands span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  background: #f7fafc;
}

/* Help then News — stacked full width */
.stack-block {
  border: 1px solid var(--ink);
  background: var(--white);
  margin-bottom: 0.85rem;
}
.stack-block .inner { padding: 1.15rem 1.2rem; }
.help-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1.2rem;
}
.help-grid details {
  border: 1px solid var(--line);
  padding: 0.7rem 0.8rem;
  background: #fbfcfe;
}
.help-grid summary {
  cursor: pointer;
  font-weight: 700;
  font-family: var(--font-display);
}
.help-grid p { margin: 0.4rem 0 0; color: var(--axis); font-size: 0.9rem; }
.news-log article {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0.8rem;
  padding: 0.75rem 0;
  border-bottom: 1px dashed var(--line);
}
.news-log article:last-child { border-bottom: 0; }
.news-log time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-deep);
}
.news-log h3 { margin: 0 0 0.25rem; font-size: 1rem; font-family: var(--font-display); }
.news-log p { margin: 0; color: var(--axis); font-size: 0.9rem; }
.media-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.cta-band {
  margin: 1.2rem 0 2.2rem;
  border: 1px solid var(--ink);
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  background: #0f1b2d;
  color: #fff;
}
.cta-band .left { padding: 1.5rem 1.3rem; }
.cta-band h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
}
.cta-band p { margin: 0 0 1rem; color: rgba(255,255,255,0.75); }
.gains {
  margin: 0;
  padding: 1.2rem;
  border-left: 1px solid rgba(255,255,255,0.15);
  list-style: none;
  display: grid;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.gains li {
  padding: 0.55rem 0.65rem;
  border: 1px solid rgba(125, 211, 232, 0.35);
  background: rgba(14,143,173,0.12);
}

.foot {
  border-top: 1px solid var(--ink);
  padding: 1.1rem 0 1.8rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--axis);
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
}
.foot a { color: var(--cyan-deep); font-weight: 700; }

.page-hero .dock { border-top: 1px solid var(--ink); }
.page-hero { padding-top: 0.4rem; }

@media (max-width: 960px) {
  .dock, .dash, .kpi, .cta-band, .help-grid, .media-row, .news-log article { grid-template-columns: 1fr; }
  .dock-main { border-right: 0; border-bottom: 1px solid var(--line); }
  .kpi-num { border-right: 0; border-bottom: 1px solid var(--ink); }
  .gains { border-left: 0; border-top: 1px solid rgba(255,255,255,0.15); }
  .widgets { grid-template-columns: 1fr; }
  .widgets .frame:first-child { grid-row: auto; }
  .nav { display: none; }
  .plot-row { grid-template-columns: 28px 1fr; }
  .plot-row p { grid-column: 2; }
  .dataset { display: block; overflow-x: auto; }
}
@media (max-width: 640px) {
  .req { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .btn { width: 100%; }
  .y-plot { grid-template-columns: 1fr; }
  .y-axis { flex-direction: row; border-right: 0; border-bottom: 1px solid var(--ink); padding: 0.5rem; }
}

/* Hero final overrides */
.hero-plot .plot-stage,
.page-hero .plot-stage { align-items: center; }
.hero-media,
.frame {
  align-self: center;
  height: auto;
  margin-top: 0;
  margin-bottom: 0;
  overflow: visible;
}
.hero-media img,
.frame img {
  display: block !important;
  width: 100% !important;
  height: auto !important;
  object-fit: contain !important;
  object-position: center !important;
  margin: 0 !important;
  padding: 0 !important;
  min-height: 0 !important;
  max-height: none !important;
  clip-path: none !important;
  transform: none !important;
}
.btn {
  white-space: nowrap !important;
  word-break: keep-all !important;
  writing-mode: horizontal-tb !important;
}