:root {
  --ink: #172033;
  --muted: #606d7e;
  --white: #ffffff;
  --paper: #f6f8fb;
  --line: #dce3ee;
  --blue: #255f99;
  --teal: #0a8985;
  --green: #47733f;
  --gold: #a77822;
  --red: #bb3c35;
  --shadow: 0 18px 46px rgba(23, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

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

.method-hero {
  min-height: 86vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.42fr);
  gap: 48px;
  align-items: end;
  padding: 28px clamp(22px, 6vw, 96px) 64px;
  color: var(--white);
  background:
    linear-gradient(rgba(8, 18, 31, 0.76), rgba(8, 18, 31, 0.52)),
    url("https://images.unsplash.com/photo-1519389950473-47ba0277781c?auto=format&fit=crop&w=1800&q=80");
  background-size: cover;
  background-position: center;
}

.top-nav {
  position: absolute;
  top: 22px;
  right: clamp(22px, 6vw, 96px);
  display: flex;
  gap: 10px;
}

.top-nav a,
button {
  min-height: 42px;
  padding: 0 14px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.top-nav a:hover,
button:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.method-hero .eyebrow {
  color: #8de2db;
}

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

h1 {
  max-width: 920px;
  margin-bottom: 20px;
  font-size: clamp(52px, 8vw, 96px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 26px;
}

.hero-copy p {
  max-width: 940px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 22px;
}

.hero-principle {
  padding: 24px;
  display: grid;
  gap: 14px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.hero-principle strong {
  font-size: 24px;
}

.hero-principle span {
  color: rgba(255, 255, 255, 0.86);
}

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

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

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

.section p {
  color: var(--muted);
}

.shift-grid,
.role-map,
.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.shift-grid article,
.role-map article,
.impact-grid article,
.experiment-card,
.tracker-card,
.checklist label {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.shift-grid article {
  min-height: 190px;
  padding: 22px;
}

.shift-grid span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--teal);
  font-weight: 900;
}

.shift-grid strong,
.role-map strong,
.impact-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.reality-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 44px;
  align-items: center;
  background: var(--white);
}

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

.reality-list div {
  min-height: 110px;
  padding: 20px;
  display: grid;
  align-items: center;
  background: var(--paper);
  border-left: 6px solid var(--blue);
  font-weight: 900;
}

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

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

.reality-list div:nth-child(4) {
  border-color: var(--red);
}

.role-map {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.role-map article,
.impact-grid article {
  padding: 20px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 900;
}

select {
  min-width: 240px;
  min-height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-weight: 800;
}

.experiment-section {
  background: #eef6f5;
}

.experiment-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 18px;
}

.experiment-card,
.tracker-card {
  padding: 26px;
}

.experiment-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.experiment-grid div {
  padding: 16px;
  background: var(--paper);
}

.experiment-grid strong {
  display: block;
  margin-bottom: 8px;
}

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

.tracking-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.tracking-grid span {
  padding: 10px 12px;
  background: var(--paper);
  font-weight: 900;
}

.process-steps,
.metric-ladder {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.process-steps article,
.metric-ladder article {
  min-height: 230px;
  padding: 20px;
  background: var(--white);
  border-top: 7px solid var(--teal);
  box-shadow: var(--shadow);
}

.process-steps span,
.metric-ladder span {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 16px;
  background: var(--ink);
  color: var(--white);
  font-weight: 900;
}

.validation-section {
  background: #eef2f7;
}

.impact-section {
  background: var(--white);
}

.impact-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

.boundary-note {
  padding: 22px;
  background: #fff7e8;
  border-left: 7px solid var(--gold);
}

.boundary-note strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

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

.checklist label {
  min-height: 82px;
  display: flex;
  align-items: start;
  gap: 12px;
  padding: 18px;
  color: var(--ink);
}

.checklist input {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  margin-top: 4px;
}

@media (max-width: 1120px) {
  .method-hero,
  .reality-section,
  .experiment-layout {
    grid-template-columns: 1fr;
  }

  .shift-grid,
  .role-map,
  .process-steps,
  .metric-ladder {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .method-hero {
    min-height: auto;
    padding-top: 96px;
  }

  .top-nav {
    left: 20px;
    right: 20px;
    justify-content: start;
    flex-wrap: wrap;
  }

  .row-heading {
    display: grid;
  }

  .shift-grid,
  .role-map,
  .reality-list,
  .experiment-grid,
  .tracking-grid,
  .process-steps,
  .metric-ladder,
  .impact-grid,
  .checklist {
    grid-template-columns: 1fr;
  }
}