:root {
  --ink: #132238;
  --muted: #5f6d7e;
  --line: #dbe3ee;
  --paper: #f7f9fc;
  --white: #ffffff;
  --red: #c93636;
  --teal: #0f8b8d;
  --green: #3c7d46;
  --gold: #b3832d;
  --blue: #275dad;
  --shadow: 0 18px 48px rgba(19, 34, 56, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Noto Sans TC", "PingFang TC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

.site-header {
  min-height: 72vh;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  align-items: center;
  gap: 48px;
  padding: 72px clamp(24px, 6vw, 96px) 56px;
  background:
    linear-gradient(rgba(12, 21, 35, 0.72), rgba(12, 21, 35, 0.54)),
    url("https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1800&q=80");
  background-size: cover;
  background-position: center;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.site-header .eyebrow {
  color: #8ce3dd;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(52px, 8vw, 96px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 6px;
  font-size: 22px;
  line-height: 1.2;
}

.lede {
  max-width: 760px;
  font-size: 22px;
  color: rgba(255, 255, 255, 0.88);
}

.header-panel {
  display: grid;
  gap: 14px;
}

.header-panel span {
  display: block;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  font-size: 20px;
  font-weight: 800;
}

.section {
  padding: 72px clamp(20px, 6vw, 96px);
}

.section-tight {
  padding-top: 54px;
}

.section-heading {
  max-width: 980px;
  margin-bottom: 28px;
}

.row-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  max-width: none;
}

.selector-label,
.recommendation-panel label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

select {
  min-width: 190px;
  height: 44px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
}

.pain-grid,
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.pain-grid article,
.kpi-card,
.chart-card,
.recommendation-panel,
.role-list > div {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.pain-grid article {
  padding: 22px;
}

.pain-grid strong,
.role-list strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.pain-grid p,
.role-list p,
.section p {
  color: var(--muted);
}

.brief-section {
  background: #edf6f5;
}

.brief-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(88px, 1fr));
  gap: 8px;
}

.brief-tab {
  min-height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--muted);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.brief-tab.active {
  border-color: var(--teal);
  background: var(--teal);
  color: var(--white);
}

.brief-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 20px;
  align-items: stretch;
}

.brief-panel,
.brief-aside {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.brief-panel {
  min-height: 420px;
  padding: 28px;
}

.brief-panel h3 {
  font-size: 28px;
}

.brief-panel > p {
  max-width: 860px;
}

.brief-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.brief-card {
  padding: 18px;
  background: var(--paper);
  border-left: 5px solid var(--blue);
}

.brief-card:nth-child(2) {
  border-color: var(--teal);
}

.brief-card:nth-child(3) {
  border-color: var(--gold);
}

.brief-card:nth-child(4) {
  border-color: var(--green);
}

.brief-card:nth-child(5) {
  border-color: var(--red);
}

.brief-card strong,
.roadmap-step strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
}

.layer-map {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.layer-row {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 14px;
  align-items: center;
  padding: 14px;
  background: var(--paper);
}

.layer-row strong {
  color: var(--ink);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-list span {
  padding: 6px 10px;
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.roadmap-step {
  min-height: 190px;
  padding: 18px;
  background: var(--paper);
  border-top: 6px solid var(--teal);
}

.roadmap-step span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  background: var(--ink);
  color: var(--white);
  font-weight: 900;
}

.brief-aside {
  padding: 28px;
  display: grid;
  align-content: space-between;
  gap: 24px;
}

.brief-aside blockquote {
  margin: 0;
  padding-left: 18px;
  border-left: 6px solid var(--teal);
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.45;
}

.brief-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.brief-stats div {
  padding: 14px 10px;
  background: var(--paper);
  text-align: center;
}

.brief-stats strong {
  display: block;
  font-size: 26px;
}

.brief-stats span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.kpi-card {
  min-height: 152px;
  padding: 20px;
  display: grid;
  align-content: space-between;
}

.kpi-card .value {
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
}

.kpi-card .label {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.kpi-card .delta {
  width: fit-content;
  padding: 4px 8px;
  background: rgba(15, 139, 141, 0.1);
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 44px;
  align-items: center;
  background: var(--white);
}

.reverse {
  grid-template-columns: minmax(360px, 0.9fr) minmax(0, 1.1fr);
}

.flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.flow div {
  min-height: 92px;
  padding: 18px;
  display: grid;
  align-items: center;
  border-left: 6px solid var(--blue);
  background: var(--paper);
  font-weight: 900;
}

.flow div:nth-child(2) {
  border-color: var(--teal);
}

.flow div:nth-child(3) {
  border-color: var(--gold);
}

.flow div:nth-child(4) {
  border-color: var(--green);
}

.flow div:nth-child(5) {
  border-color: var(--red);
}

.flow div:nth-child(6) {
  border-color: var(--ink);
}

.dashboard-section {
  background: #eef3f8;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 0.9fr;
  gap: 18px;
}

.chart-card {
  padding: 22px;
  min-height: 340px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
  margin-bottom: 18px;
}

.card-head span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.bar-row {
  display: grid;
  grid-template-columns: 96px 1fr 54px;
  gap: 12px;
  align-items: center;
  margin: 15px 0;
}

.bar-label {
  color: var(--muted);
  font-weight: 800;
}

.bar-track {
  height: 24px;
  background: #e2e9f1;
}

.bar-fill {
  height: 100%;
  background: var(--blue);
}

.bar-value {
  text-align: right;
  font-weight: 900;
}

.line-chart svg {
  width: 100%;
  height: 235px;
  display: block;
}

.priority-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.priority-list li {
  padding: 14px;
  background: var(--paper);
  border-left: 5px solid var(--teal);
}

.priority-list strong {
  display: block;
  margin-bottom: 4px;
}

.recommendation-panel {
  padding: 28px;
}

.recommendation {
  margin-top: 18px;
  padding: 18px;
  background: var(--paper);
  border-left: 6px solid var(--teal);
}

.recommendation ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.role-list {
  display: grid;
  gap: 16px;
}

.role-list > div {
  padding: 22px;
}

.campus-section {
  background: #f8fbff;
}

.campus-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
  gap: 20px;
}

.expertise-panel,
.campaign-panel {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.expertise-panel {
  padding: 28px;
}

.expertise-list {
  display: grid;
  gap: 12px;
}

.expertise-list article {
  padding: 16px;
  background: var(--paper);
  border-left: 5px solid var(--blue);
}

.expertise-list article:nth-child(2) {
  border-color: var(--teal);
}

.expertise-list article:nth-child(3) {
  border-color: var(--gold);
}

.expertise-list article:nth-child(4) {
  border-color: var(--green);
}

.expertise-list strong {
  display: block;
  margin-bottom: 6px;
  font-size: 17px;
}

.campaign-panel {
  padding: 28px;
}

.campaign-detail {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.campaign-hero {
  padding: 20px;
  background: var(--ink);
  color: var(--white);
}

.campaign-hero h4 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.2;
}

.campaign-hero p {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
}

.campaign-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.campaign-column {
  padding: 16px;
  background: var(--paper);
}

.campaign-column strong {
  display: block;
  margin-bottom: 8px;
}

.campaign-column ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.metric-strip div {
  padding: 14px 10px;
  background: #edf6f5;
  text-align: center;
  font-weight: 900;
}

.metric-strip span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.demo-links-section {
  background: #f8fbfe;
}

.demo-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.demo-links a {
  min-height: 150px;
  padding: 20px;
  display: grid;
  align-content: space-between;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow);
}

.demo-links a:hover {
  border-color: var(--teal);
}

.demo-links strong {
  font-size: 20px;
}

.demo-links span {
  color: var(--muted);
  font-weight: 800;
}

footer {
  padding: 26px clamp(20px, 6vw, 96px);
  color: var(--muted);
  background: var(--white);
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .site-header,
  .split,
  .reverse,
  .dashboard-grid,
  .brief-shell,
  .campus-grid {
    grid-template-columns: 1fr;
  }

  .pain-grid,
  .kpi-grid,
  .demo-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .row-heading {
    align-items: start;
    flex-direction: column;
  }

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

@media (max-width: 620px) {
  .site-header {
    min-height: auto;
    padding-top: 52px;
  }

  .lede {
    font-size: 18px;
  }

  .pain-grid,
  .kpi-grid,
  .flow,
  .brief-card-grid,
  .roadmap,
  .brief-stats,
  .layer-row,
  .campaign-columns,
  .metric-strip,
  .demo-links {
    grid-template-columns: 1fr;
  }

  .bar-row {
    grid-template-columns: 78px 1fr 44px;
  }
}