/* Clean Steep/Notion/Tableau direction. Keep it plain, dense, and metric-led. */
:root {
  --clean-ink: #17191f;
  --clean-muted: #6f737a;
  --clean-soft: #f7f7f5;
  --clean-line: #e4e4df;
  --clean-panel: #ffffff;
  --clean-blue: #3b73f6;
  --clean-peach: #f4b29f;
  --clean-shadow: 0 24px 70px rgba(23, 25, 31, 0.09);
}

body {
  color: var(--clean-ink);
  background: #f8f8f6;
}

.site-header {
  background: rgba(248, 248, 246, 0.9);
  border-bottom: 1px solid var(--clean-line);
  color: var(--clean-ink);
}

.site-header .brand-mark {
  background: var(--clean-ink);
  color: #fff;
}

.site-header .nav-links {
  color: var(--clean-muted);
}

.site-header .nav-links a:hover {
  color: var(--clean-ink);
}

.site-header .button.small,
.hero .button,
.button {
  background: var(--clean-ink);
  border-color: var(--clean-ink);
  color: #fff;
  box-shadow: none;
}

.hero .button.secondary,
.button.secondary {
  background: #fff;
  border-color: var(--clean-line);
  color: var(--clean-ink);
}

.lang-switch {
  background: #fff;
  border-color: var(--clean-line);
}

.lang-button {
  color: var(--clean-muted);
}

.lang-button.active {
  background: var(--clean-ink);
  color: #fff;
}

.hero {
  display: grid;
  grid-template-columns: minmax(520px, 0.45fr) minmax(620px, 1fr);
  gap: 48px;
  min-height: auto;
  padding: 82px clamp(24px, 4vw, 72px) 108px;
  color: var(--clean-ink);
  background:
    radial-gradient(circle at 78% 22%, rgba(59, 115, 246, 0.16), transparent 28%),
    radial-gradient(circle at 68% 72%, rgba(64, 95, 185, 0.1), transparent 28%),
    linear-gradient(90deg, rgba(228, 228, 223, 0.65) 1px, transparent 1px),
    linear-gradient(180deg, rgba(228, 228, 223, 0.55) 1px, transparent 1px),
    #fbfbfa;
  background-size: auto, auto, 96px 96px, 96px 96px, auto;
}

.hero-copy {
  max-width: 560px;
  justify-self: start;
}

.eyebrow,
.hero .eyebrow {
  color: #4f66d8;
  font-size: 12px;
  letter-spacing: 0;
}

.hero h1 {
  color: var(--clean-ink);
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  font-size: clamp(48px, 4.2vw, 66px);
  line-height: 0.96;
  white-space: normal;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  color: var(--clean-muted);
  font-size: 20px;
}

.trust-strip {
  align-items: stretch;
}

.trust-strip span {
  color: #555b66;
  background: #fff;
  border-color: var(--clean-line);
}

.hero-visual-card.operating-window {
  align-self: end;
  min-height: 610px;
  padding: 0;
  overflow: hidden;
  background: linear-gradient(180deg, #0e1422 0, #111827 48px, #ffffff 48px);
  border: 1px solid rgba(23, 25, 31, 0.15);
  border-radius: 18px;
  box-shadow:
    0 34px 90px rgba(31, 50, 89, 0.18),
    0 0 0 1px rgba(255, 255, 255, 0.7) inset;
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 18px;
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #9aa6bb;
  font-size: 13px;
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #46546b;
}

.window-bar strong {
  margin-left: 12px;
  color: #fff;
}

.window-bar em {
  margin-left: auto;
  font-style: normal;
}

.operating-layout {
  display: grid;
  grid-template-columns: 190px 1fr;
  min-height: 562px;
}

.operating-sidebar {
  padding: 22px 14px;
  background: #f4f6fb;
  border-right: 1px solid #dde3ef;
}

.operating-sidebar b,
.operating-sidebar a {
  display: block;
}

.operating-sidebar b {
  margin: 0 10px 16px;
  font-size: 14px;
}

.operating-sidebar a {
  padding: 10px;
  color: #73777e;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 650;
}

.operating-sidebar a.active {
  color: var(--clean-ink);
  background: #fff;
  border: 1px solid var(--clean-line);
}

.operating-main {
  padding: 28px;
  background:
    linear-gradient(90deg, rgba(215, 224, 242, 0.55) 1px, transparent 1px),
    linear-gradient(180deg, rgba(215, 224, 242, 0.45) 1px, transparent 1px),
    #fbfcff;
  background-size: 48px 48px, 48px 48px, auto;
}

.ask-bubble {
  width: fit-content;
  max-width: 560px;
  margin-left: auto;
  padding: 13px 18px;
  color: #2b2d32;
  background: #f5f5f3;
  border: 1px solid #ecece7;
  border-radius: 22px;
  font-size: 15px;
}

.ops-pulse {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 18px;
}

.ops-pulse span {
  padding: 8px 10px;
  color: #3f4b61;
  background: #fff;
  border: 1px solid #dfe6f2;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 760;
  text-align: center;
  box-shadow: 0 8px 24px rgba(31, 50, 89, 0.05);
}

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

.operating-kpis article,
.metric-card,
.market-radar-board,
.cost-column,
.cost-summary {
  background: #fff;
  border: 1px solid #dfe6f2;
  border-radius: 14px;
}

.operating-kpis article {
  padding: 16px;
}

.operating-kpis span,
.radar-kpis span,
.cost-row span {
  display: block;
  color: var(--clean-muted);
  font-size: 12px;
  font-weight: 720;
}

.operating-kpis strong {
  display: block;
  margin-top: 12px;
  font-size: 30px;
}

.operating-kpis em,
.radar-kpis em {
  display: block;
  margin-top: 4px;
  color: var(--clean-blue);
  font-style: normal;
  font-size: 12px;
  font-weight: 720;
}

.operating-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.metric-card {
  min-height: 158px;
  padding: 18px;
  box-shadow: 0 18px 42px rgba(31, 50, 89, 0.07);
}

.metric-card.wide {
  grid-row: span 2;
}

.metric-card b {
  display: block;
  margin-bottom: 6px;
}

.metric-card span,
.metric-card p {
  color: var(--clean-muted);
  font-size: 13px;
  line-height: 1.55;
}

.radar-list {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.signal-chart {
  display: none;
}

.signal-chart::before {
  display: none;
}

.signal-chart i {
  display: none;
}

.radar-list div {
  display: grid;
  grid-template-columns: 1fr 38px;
  gap: 10px;
  align-items: center;
}

.radar-list i {
  grid-column: 1 / -1;
  height: 8px;
  background:
    linear-gradient(90deg, var(--clean-blue) var(--w), #eceef2 var(--w));
  border-radius: 999px;
}

.mini-bars {
  display: flex;
  align-items: end;
  gap: 8px;
  height: 96px;
  margin: 20px 0 12px;
}

.mini-bars i {
  width: 24px;
  height: var(--h);
  background: var(--clean-blue);
  border-radius: 7px 7px 0 0;
}

.metric-card ol {
  display: grid;
  gap: 12px;
  padding-left: 20px;
  color: #383b42;
  font-size: 14px;
}

.risk-card {
  min-height: auto;
}

.risk-card p {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid #edf1f7;
}

.risk-card p strong {
  color: #b45309;
  font-size: 12px;
}

.strategy-engine {
  padding: 108px 0;
}

.strategy-board {
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 24%, rgba(59, 115, 246, 0.2), transparent 28%),
    radial-gradient(circle at 42% 92%, rgba(244, 178, 159, 0.18), transparent 28%),
    #111827;
  border: 1px solid #273247;
  border-radius: 20px;
  box-shadow: 0 34px 100px rgba(23, 25, 31, 0.22);
}

.strategy-board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 22px 26px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.strategy-board-header span,
.strategy-board-header em {
  display: block;
  color: #9fb0ca;
  font-size: 12px;
  font-style: normal;
  font-weight: 760;
}

.strategy-board-header strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
}

.strategy-board-header em {
  padding: 8px 12px;
  color: #dbe6ff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  white-space: nowrap;
}

.strategy-map {
  display: grid;
  grid-template-columns: 0.9fr 1.05fr 1.2fr;
  grid-template-rows: auto auto;
  gap: 16px;
  padding: 22px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 52px 52px, 52px 52px;
}

.strategy-map article {
  min-height: 210px;
  padding: 18px;
  color: #e7edf8;
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(219, 230, 255, 0.16);
  border-radius: 16px;
  backdrop-filter: blur(10px);
}

.strategy-map article > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 26px;
  margin-bottom: 14px;
  color: #9fb8ff;
  background: rgba(59, 115, 246, 0.16);
  border: 1px solid rgba(159, 184, 255, 0.2);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 820;
}

.strategy-map h3 {
  color: #fff;
}

.strategy-map p {
  margin: 10px 0 0;
  color: #c1cce0;
  font-size: 15px;
}

.question-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.issue-tree-card {
  grid-row: span 2;
}

.issue-tree {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.issue-tree b {
  display: block;
  padding: 15px;
  color: #111827;
  text-align: center;
  background: #fff;
  border-radius: 12px;
}

.issue-tree div {
  display: grid;
  gap: 12px;
  padding-left: 24px;
  border-left: 1px dashed rgba(219, 230, 255, 0.32);
}

.issue-tree i {
  display: block;
  padding: 12px 14px;
  color: #e7edf8;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(219, 230, 255, 0.14);
  border-radius: 10px;
  font-style: normal;
  font-weight: 760;
}

.matrix-card {
  grid-row: span 2;
}

.priority-matrix {
  position: relative;
  min-height: 330px;
  margin-top: 16px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(135deg, rgba(59, 115, 246, 0.16), rgba(244, 178, 159, 0.1));
  background-size: 50% 50%, 50% 50%, auto;
  border: 1px solid rgba(219, 230, 255, 0.18);
  border-radius: 14px;
}

.priority-matrix label {
  position: absolute;
  color: #9fb0ca;
  font-size: 12px;
  font-weight: 780;
}

.priority-matrix label:first-child {
  top: 14px;
  left: 14px;
}

.priority-matrix label:nth-child(2) {
  right: 14px;
  bottom: 12px;
}

.priority-matrix .dot {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #3b73f6;
  box-shadow: 0 0 0 8px rgba(59, 115, 246, 0.16);
}

.priority-matrix .dot b {
  position: absolute;
  left: 18px;
  top: -9px;
  width: 120px;
  color: #fff;
  font-size: 12px;
  font-style: normal;
}

.priority-matrix .hot {
  right: 28%;
  top: 22%;
}

.priority-matrix .mid {
  right: 42%;
  top: 48%;
  background: #f4b29f;
  box-shadow: 0 0 0 8px rgba(244, 178, 159, 0.16);
}

.priority-matrix .watch {
  right: 22%;
  top: 68%;
  background: #91a4c8;
  box-shadow: 0 0 0 8px rgba(145, 164, 200, 0.16);
}

.agent-core-card {
  position: relative;
  overflow: hidden;
}

.agent-rings {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 130px;
  height: 130px;
}

.agent-rings i {
  position: absolute;
  inset: calc(var(--n, 0) * 18px);
  border: 1px solid rgba(159, 184, 255, 0.35);
  border-radius: 50%;
}

.agent-rings i:nth-child(1) {
  --n: 0;
  box-shadow: 0 0 40px rgba(59, 115, 246, 0.24);
}

.agent-rings i:nth-child(2) {
  --n: 1;
}

.agent-rings i:nth-child(3) {
  --n: 2;
  background: rgba(59, 115, 246, 0.22);
}

.roadmap-card {
  min-height: 160px;
}

.roadmap-line {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 28px;
}

.roadmap-line b {
  position: relative;
  padding: 14px 10px;
  color: #111827;
  text-align: center;
  background: #fff;
  border-radius: 10px;
  font-size: 13px;
}

.roadmap-line b::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -10px;
  width: 10px;
  height: 1px;
  background: rgba(255, 255, 255, 0.42);
}

.roadmap-line b:last-child::after {
  display: none;
}

.platform .section-heading.narrow,
.platform .capability-stack {
  align-self: center;
}

.platform .visual-stack {
  transform: scale(1.08);
  transform-origin: center;
  box-shadow: 0 28px 80px rgba(31, 50, 89, 0.14);
}

.platform .workflow-node {
  background: #fff;
  box-shadow: 0 12px 32px rgba(31, 50, 89, 0.06);
}

.platform .workflow-node em {
  color: #3b73f6;
}

.comparison-stage,
.modules,
.cases,
.outputs,
.deliverables,
.closing {
  padding: 96px 0;
}

.section-heading p:not(.eyebrow) {
  color: var(--clean-muted);
}

h2 {
  color: var(--clean-ink);
  font-size: clamp(32px, 4vw, 56px);
}

.interactive-compare.cost-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding: 18px;
  background:
    linear-gradient(90deg, rgba(223, 230, 242, 0.55) 1px, transparent 1px),
    linear-gradient(180deg, rgba(223, 230, 242, 0.55) 1px, transparent 1px),
    #fff;
  background-size: 54px 54px, 54px 54px, auto;
  border: 1px solid #dfe6f2;
  border-radius: 18px;
  box-shadow: var(--clean-shadow);
}

.cost-column {
  padding: 24px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
}

.cost-column.highlighted {
  background: linear-gradient(180deg, rgba(243, 245, 255, 0.92), rgba(255, 255, 255, 0.9));
  border-color: #cdd7ff;
}

.cost-column h3 {
  margin-bottom: 18px;
  font-size: 26px;
}

.cost-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid var(--clean-line);
}

.cost-row strong {
  font-size: 18px;
}

.cost-summary {
  grid-column: 1 / -1;
  padding: 20px 24px;
  background: var(--clean-ink);
  color: #fff;
}

.cost-summary p {
  margin: 8px 0 0;
  color: #d7d9dd;
}

.platform,
.workflow,
.comparison {
  background: #f0f0ec;
}

.workflow-visual,
.mini-command {
  background: #fff;
  border-color: var(--clean-line);
}

.workflow-node,
.command-list article {
  color: var(--clean-ink);
  background: #fbfbfa;
  border-color: var(--clean-line);
}

.workflow-node strong,
.command-list b {
  color: var(--clean-ink);
}

.workflow-node span,
.command-list span {
  color: var(--clean-muted);
}

.workflow-output,
.command-footer {
  background: var(--clean-ink);
}

.market-radar-board {
  padding: 22px;
  margin: 8px 0 28px;
  box-shadow: var(--clean-shadow);
}

.radar-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
}

.radar-head span,
.radar-head strong {
  color: var(--clean-muted);
  font-size: 12px;
  font-weight: 760;
}

.radar-head h3 {
  margin: 8px 0 0;
  font-size: 26px;
}

.radar-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 22px;
}

.radar-kpis article {
  padding: 16px;
  background: #fbfbfa;
  border: 1px solid var(--clean-line);
  border-radius: 12px;
}

.radar-kpis strong {
  display: block;
  margin-top: 8px;
  font-size: 30px;
}

.opportunity-table {
  margin-top: 18px;
  border: 1px solid var(--clean-line);
  border-radius: 12px;
  overflow: hidden;
}

.op-row {
  display: grid;
  grid-template-columns: minmax(150px, 1.3fr) 0.7fr 0.7fr 0.7fr minmax(190px, 1.2fr);
  gap: 12px;
  align-items: center;
  padding: 13px 16px;
  border-top: 1px solid var(--clean-line);
  font-size: 14px;
}

.op-row:first-child {
  border-top: 0;
}

.op-row.head {
  color: var(--clean-muted);
  background: #fbfbfa;
  font-size: 12px;
  font-weight: 760;
}

.op-row i,
.op-row em {
  font-style: normal;
}

.op-row i {
  width: fit-content;
  padding: 4px 8px;
  border-radius: 999px;
  color: #6b4b00;
  background: #fff3c4;
  font-size: 12px;
}

.op-row i[data-level="low"] {
  color: #285a42;
  background: #e6f6ed;
}

.op-row i[data-level="high"] {
  color: #8d2d35;
  background: #ffe7ea;
}

.op-row em {
  color: #3c4d8f;
  font-weight: 720;
}

.analysis-logic article {
  background: #fff;
  border: 1px solid var(--clean-line);
  color: var(--clean-ink);
}

.analysis-logic strong {
  color: var(--clean-ink);
}

.analysis-logic span {
  color: var(--clean-muted);
}

.channel-accordion {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.channel-accordion details {
  overflow: hidden;
  background: #fff;
  border: 1px solid #dfe6f2;
  border-radius: 16px;
  box-shadow: 0 18px 44px rgba(31, 50, 89, 0.07);
}

.channel-accordion summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}

.channel-accordion summary::-webkit-details-marker {
  display: none;
}

.channel-accordion summary::after {
  content: "+";
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  color: #3b73f6;
  background: #f1f5ff;
  border-radius: 50%;
  font-weight: 820;
}

.channel-accordion details[open] summary::after {
  content: "-";
}

.channel-accordion summary span {
  color: #111827;
  font-size: 22px;
  font-weight: 820;
}

.channel-accordion summary em {
  color: #6f7a8b;
  font-style: normal;
  font-size: 13px;
  font-weight: 720;
}

.channel-panel {
  padding: 0 22px 22px;
  border-top: 1px solid #edf1f7;
}

.channel-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 18px;
}

.channel-metrics article {
  padding: 16px;
  background:
    linear-gradient(90deg, rgba(59, 115, 246, 0.08), transparent),
    #f8faff;
  border: 1px solid #e3eaf8;
  border-radius: 12px;
}

.channel-metrics span {
  display: block;
  color: #6b7280;
  font-size: 12px;
  font-weight: 760;
}

.channel-metrics strong {
  display: block;
  margin-top: 8px;
  color: #111827;
  font-size: 22px;
  line-height: 1.2;
}

.channel-table {
  display: grid;
  gap: 0;
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid #e3eaf8;
  border-radius: 12px;
}

.channel-table div {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 18px;
  padding: 14px 16px;
  background: #fff;
  border-top: 1px solid #edf1f7;
}

.channel-table div:first-child {
  border-top: 0;
}

.channel-table b {
  color: #111827;
}

.channel-table span {
  color: #526070;
  line-height: 1.6;
}

.case-card {
  border-color: var(--clean-line);
}

.closing-inner {
  background: var(--clean-ink);
}

.site-footer {
  background: #fbfbfa;
  border-top-color: var(--clean-line);
  color: var(--clean-muted);
}

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

  .hero-visual-card.operating-window {
    min-height: auto;
  }
}

@media (max-width: 900px) {
  .operating-layout,
  .interactive-compare.cost-compare,
  .radar-kpis {
    grid-template-columns: 1fr;
  }

  .operating-sidebar {
    display: none;
  }

  .operating-grid,
  .operating-kpis {
    grid-template-columns: 1fr;
  }

  .op-row {
    grid-template-columns: 1fr;
  }

  .op-row.head {
    display: none;
  }

  .strategy-board-header,
  .strategy-map,
  .roadmap-line,
  .channel-metrics {
    grid-template-columns: 1fr;
  }

  .strategy-board-header {
    align-items: start;
  }

  .strategy-board-header em {
    white-space: normal;
  }

  .issue-tree-card,
  .matrix-card {
    grid-row: auto;
  }

  .channel-accordion summary,
  .channel-table div {
    grid-template-columns: 1fr;
  }

  .channel-accordion summary::after {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 44px 20px 72px;
  }

  .hero h1 {
    font-size: 44px;
    line-height: 1.02;
  }

  .operating-main {
    padding: 20px;
  }

  .ask-bubble {
    margin-left: 0;
  }
}