:root {
  --purple: #7258ff;
  --purple-soft: #efebff;
  --acid: #c3f432;
  --ink: #191919;
  --muted: #686868;
  --rule: #dedede;
  --soft: #f5f5f5;
  --white: #ffffff;
  --red: #c85c41;
  --amber: #d99a2b;
  --green: #4f8f62;
  --font-ui: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  --font-serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
  --pad-x: 120px;
  --pad-top: 92px;
  --pad-bottom: 90px;
}

html,
body {
  margin: 0;
  padding: 0;
  background: #000;
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

section {
  position: relative;
  overflow: hidden;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-ui);
}

section::after {
  content: "本專案由 TWNIC 網路社群計劃支持";
  position: absolute;
  right: 54px;
  bottom: 38px;
  color: #737373;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

section.inverse::after,
section.section-divider::after,
section.cover::after {
  color: rgba(255, 255, 255, 0.68);
}

.frame {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  padding: var(--pad-top) var(--pad-x) var(--pad-bottom);
  display: flex;
  flex-direction: column;
}

.eyebrow {
  margin: 0 0 26px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow .num {
  display: inline-block;
  margin-right: 18px;
  padding: 3px 11px;
  background: var(--acid);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.title {
  margin: 0 0 42px;
  max-width: 1690px;
  font-size: 70px;
  font-weight: 700;
  line-height: 1.17;
  letter-spacing: -0.025em;
}

.title.compact {
  font-size: 60px;
}

.title.xcompact {
  margin-bottom: 26px;
  font-size: 50px;
}

.lead {
  margin: 0;
  color: #333;
  font-size: 38px;
  line-height: 1.58;
}

.body {
  margin: 0;
  font-size: 31px;
  line-height: 1.58;
}

.small {
  margin: 0;
  color: var(--muted);
  font-size: 24px;
  line-height: 1.5;
}

.source {
  position: absolute;
  left: var(--pad-x);
  bottom: 38px;
  max-width: 1080px;
  color: #777;
  font-size: 17px;
  line-height: 1.35;
}

.page-links {
  position: absolute;
  z-index: 8;
  left: var(--pad-x);
  bottom: 82px;
  margin: 0;
  color: #555;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.35;
}

.page-links::before {
  content: "延伸閱讀  ";
  color: #999;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.page-links a {
  margin-right: 18px;
  color: var(--purple);
  text-decoration-color: rgba(114, 88, 255, 0.45);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.inverse .page-links,
.section-divider .page-links,
.cover .page-links {
  color: rgba(255, 255, 255, 0.64);
}

.inverse .page-links a,
.section-divider .page-links a,
.cover .page-links a {
  color: var(--acid);
  text-decoration-color: rgba(195, 244, 50, 0.45);
}

.inverse .source,
.section-divider .source,
.cover .source {
  color: rgba(255, 255, 255, 0.58);
}

strong {
  font-weight: 700;
  background: linear-gradient(transparent 60%, var(--acid) 60%, var(--acid) 92%, transparent 92%);
}

.inverse strong,
.section-divider strong,
.cover strong,
.metric strong,
.flow-node strong,
.lane strong,
.legend strong,
.callout strong {
  background: none;
}

.mono {
  font-family: var(--font-mono);
}

.purple {
  color: var(--purple);
}

.acid {
  color: var(--acid);
}

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

.cover {
  background: var(--ink);
  color: var(--white);
}

.cover .frame {
  justify-content: center;
  padding-top: 82px;
}

.cover-kicker {
  margin: 0 0 44px;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 0.17em;
}

.cover-title {
  margin: 0;
  max-width: 1550px;
  font-family: var(--font-serif);
  font-size: 134px;
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.025em;
}

.cover-title span {
  color: var(--acid);
}

.cover-subtitle {
  margin: 40px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 36px;
  line-height: 1.4;
}

.cover-meta {
  position: absolute;
  left: var(--pad-x);
  right: var(--pad-x);
  bottom: 105px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.75);
  font-size: 23px;
  letter-spacing: 0.05em;
}

.inverse {
  background: var(--ink);
  color: var(--white);
}

.thesis {
  margin: auto 0;
  max-width: 1590px;
  font-family: var(--font-serif);
  font-size: 74px;
  font-weight: 600;
  line-height: 1.46;
}

.thesis .mark {
  color: var(--acid);
}

.section-divider {
  background: #000;
  color: #fff;
}

.section-divider .frame {
  justify-content: center;
}

.section-number {
  margin: 0 0 10px;
  color: var(--acid);
  font-family: var(--font-serif);
  font-size: 182px;
  font-weight: 700;
  line-height: 0.9;
}

.section-label {
  margin: 0 0 22px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: 0.24em;
}

.section-title {
  margin: 0;
  font-size: 86px;
  line-height: 1.18;
}

.section-subtitle {
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 34px;
}

.art-divider .divider-art {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.58;
}

.art-divider::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.94) 0%, rgba(0, 0, 0, 0.76) 52%, rgba(0, 0, 0, 0.42) 100%);
}

.art-divider .frame,
.art-divider::after,
.art-divider .page-links {
  z-index: 2;
}

.art-divider .frame {
  position: relative;
  z-index: 3;
}

.art-divider .page-links {
  z-index: 4;
}

.platform-cleaner-divider .section-title span {
  color: var(--acid);
}

.cols-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 76px;
  align-items: start;
}

.cols-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 42px;
  align-items: stretch;
}

.big-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 138px;
  font-weight: 700;
  line-height: 1;
  color: var(--purple);
}

.number-label {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 25px;
}

.callout {
  padding: 28px 34px;
  border-left: 7px solid var(--purple);
  background: var(--purple-soft);
  font-size: 31px;
  line-height: 1.55;
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 26px;
  margin-top: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 40px;
  right: 40px;
  top: 30px;
  height: 5px;
  background: var(--rule);
}

.timeline-step {
  position: relative;
  padding-top: 78px;
  font-size: 26px;
  line-height: 1.5;
}

.timeline-step::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 0;
  width: 30px;
  height: 30px;
  border: 6px solid var(--white);
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 0 3px var(--purple);
}

.timeline-step.final::before {
  background: var(--acid);
  box-shadow: 0 0 0 3px var(--acid);
}

.timeline-step .date {
  display: block;
  margin-bottom: 12px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
}

.flow-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 46px;
  align-items: stretch;
  margin-top: 26px;
}

.flow-node {
  position: relative;
  min-height: 248px;
  padding: 30px 27px;
  box-sizing: border-box;
  border-top: 8px solid var(--purple);
  background: var(--soft);
  font-size: 25px;
  line-height: 1.5;
}

.flow-node::after {
  content: "→";
  position: absolute;
  top: 88px;
  right: -42px;
  color: var(--purple);
  font-size: 50px;
  font-weight: 500;
}

.flow-node:last-child::after {
  content: none;
}

.flow-node .step {
  display: block;
  margin-bottom: 16px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.flow-node.warning {
  border-top-color: var(--acid);
  background: var(--purple-soft);
}

.incident-map {
  display: grid;
  grid-template-columns: 0.82fr 0.92fr 1.45fr;
  min-height: 374px;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.incident-stage {
  position: relative;
  box-sizing: border-box;
  padding: 22px 26px 24px;
  border-right: 1px solid var(--rule);
}

.incident-stage:last-child {
  border-right: 0;
}

.incident-stage:not(:last-child)::after {
  content: "→";
  position: absolute;
  z-index: 3;
  top: 160px;
  right: -21px;
  width: 40px;
  color: var(--purple);
  background: #fff;
  font-size: 35px;
  font-weight: 700;
  line-height: 50px;
  text-align: center;
}

.stage-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 17px;
  color: var(--purple);
  font-size: 19px;
  font-weight: 700;
}

.stage-label span {
  font-family: var(--font-mono);
  font-size: 15px;
}

.incident-node {
  padding: 17px 19px;
  background: var(--soft);
}

.incident-node b,
.incident-node span {
  display: block;
}

.incident-node b {
  margin-bottom: 5px;
  font-size: 22px;
  line-height: 1.25;
}

.incident-node span {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.38;
}

.incident-node.primary {
  border-left: 7px solid var(--purple);
  background: var(--purple-soft);
}

.incident-node.warning {
  border-left: 7px solid var(--red);
  background: #fff0ec;
}

.incident-node.dark {
  background: var(--ink);
  color: #fff;
}

.incident-node.dark span {
  color: rgba(255, 255, 255, 0.72);
}

.down-arrow {
  height: 32px;
  color: var(--purple);
  font-size: 26px;
  font-weight: 700;
  line-height: 32px;
  text-align: center;
}

.scope-jump {
  margin: 13px 0;
  padding: 11px 18px;
  border: 2px solid var(--amber);
  background: #fff8e8;
}

.scope-jump span,
.scope-jump b {
  display: block;
}

.scope-jump span {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.scope-jump b {
  margin-top: 3px;
  font-size: 22px;
  line-height: 1.25;
}

.execution-line {
  display: grid;
  grid-template-columns: 1fr 30px 1.18fr 30px 1fr;
  align-items: stretch;
  margin-top: 68px;
}

.execution-line .incident-node {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 178px;
}

.right-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  font-size: 25px;
  font-weight: 700;
}

.warning-branch {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
  padding: 13px 18px;
  background: var(--purple-soft);
  font-size: 16px;
  line-height: 1.35;
}

.warning-branch .branch-tag {
  color: var(--purple);
  font-weight: 700;
}

.warning-branch b {
  color: var(--purple);
  background: none;
}

.pipeline-gap {
  display: grid;
  grid-template-columns: 78px 1fr;
  align-items: center;
  margin-top: 12px;
  border-left: 7px solid var(--red);
  background: #fff0ec;
  color: #963c29;
  font-size: 17px;
  line-height: 1.38;
}

.pipeline-gap b {
  padding: 14px 18px;
  background: none;
  color: var(--red);
}

.pipeline-gap span {
  padding: 14px 18px 14px 0;
}

.rule-cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 8px;
}

.rule-case {
  min-height: 390px;
  padding: 30px 32px;
  box-sizing: border-box;
  border-top: 8px solid var(--purple);
  background: var(--soft);
}

.rule-case.incident {
  border-top-color: var(--amber);
  background: #fff7e8;
}

.rule-case.gap {
  border-top-color: var(--red);
  background: #fff0ec;
}

.rule-case .case-label {
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.rule-case h3 {
  margin: 18px 0 20px;
  font-size: 33px;
  line-height: 1.3;
}

.rule-case ul {
  margin: 0;
  padding-left: 26px;
  font-size: 22px;
  line-height: 1.55;
}

.magnify {
  display: grid;
  grid-template-columns: 0.72fr 1.4fr;
  gap: 58px;
  align-items: center;
  margin-top: 24px;
}

.single-content {
  padding: 46px;
  border: 2px solid var(--rule);
  font-size: 30px;
  line-height: 1.5;
}

.domain-block {
  padding: 50px 54px;
  background: var(--ink);
  color: #fff;
  font-size: 32px;
  line-height: 1.5;
}

.domain-block .domain {
  display: block;
  margin-bottom: 18px;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 58px;
  font-weight: 700;
}

.magnify-arrow {
  position: absolute;
  left: 665px;
  top: 510px;
  color: var(--purple);
  font-size: 86px;
  font-weight: 700;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 46px;
  margin-top: 14px;
}

.metric {
  padding: 34px 38px 30px;
  border-top: 8px solid var(--purple);
  background: var(--soft);
}

.metric .value {
  display: block;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 86px;
  font-weight: 700;
  line-height: 1.05;
}

.metric .label {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  font-size: 25px;
  line-height: 1.45;
}

.coverage-bar {
  display: grid;
  grid-template-columns: 14fr 61fr 8fr;
  height: 70px;
  margin-top: 26px;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  text-align: center;
}

.coverage-notes {
  display: grid;
  grid-template-columns: 14fr 61fr 18fr;
  gap: 14px;
  margin-top: 14px;
}

.coverage-notes > div {
  padding: 15px 18px;
  background: var(--soft);
}

.coverage-notes b,
.coverage-notes span {
  display: block;
}

.coverage-notes b {
  margin-bottom: 5px;
  color: var(--purple);
  font-size: 18px;
}

.coverage-notes span {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.38;
}

.procedure-layout {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 30px;
  min-height: 500px;
}

.procedure-steps {
  position: relative;
  display: grid;
  gap: 10px;
}

.procedure-steps::before {
  content: "";
  position: absolute;
  top: 42px;
  bottom: 42px;
  left: 35px;
  width: 3px;
  background: #c9bfff;
}

.procedure-step {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 72px 1fr;
  align-items: center;
  min-height: 88px;
  padding: 9px 22px 9px 0;
  box-sizing: border-box;
  border: 1px solid var(--rule);
  background: #fff;
}

.procedure-step.last {
  border-color: #efc0b5;
  background: #fff0ec;
}

.step-no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  margin-left: 10px;
  border-radius: 50%;
  background: var(--purple);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
}

.procedure-step.last .step-no {
  background: var(--red);
}

.procedure-step b,
.procedure-step span {
  display: block;
}

.procedure-step .step-no {
  display: flex;
}

.procedure-step b {
  margin-bottom: 5px;
  font-size: 23px;
}

.procedure-step div span {
  color: var(--muted);
  font-size: 17px;
}

.evidence-rail {
  display: grid;
  grid-template-rows: 49px repeat(5, 1fr);
  border-left: 8px solid var(--ink);
  background: var(--soft);
}

.rail-title {
  padding: 13px 20px;
  background: var(--ink);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
}

.evidence-rail > div:not(.rail-title) {
  display: grid;
  grid-template-columns: 45px 1fr;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-bottom: 1px solid #ddd;
}

.evidence-rail > div.last {
  border-bottom: 0;
  background: #fff0ec;
}

.evidence-rail b {
  color: var(--purple);
  background: none;
  font-family: var(--font-mono);
  font-size: 15px;
}

.evidence-rail .last b {
  color: var(--red);
}

.evidence-rail span {
  color: #444;
  font-size: 17px;
  line-height: 1.35;
}

.procedure-findings {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 14px;
  margin-top: 16px;
}

.procedure-findings > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: center;
  min-height: 78px;
  padding: 14px 20px;
  box-sizing: border-box;
  background: var(--ink);
  color: #fff;
}

.procedure-findings > div.gap {
  background: var(--acid);
  color: var(--ink);
}

.procedure-findings span {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.procedure-findings b {
  background: none;
  font-size: 18px;
  line-height: 1.4;
}

.coverage-bar > div {
  display: flex;
  align-items: center;
  justify-content: center;
}

.coverage-bar .direct {
  background: var(--purple);
}

.coverage-bar .indirect {
  background: #9b88ff;
}

.coverage-bar .inactive {
  background: #aaa;
}

.recipient-list {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  margin-top: 18px;
}

.steps-vertical {
  display: grid;
  gap: 16px;
}

.step-line {
  padding: 20px 26px;
  border-left: 7px solid var(--purple);
  background: var(--soft);
  font-size: 27px;
  line-height: 1.4;
}

.missing-box {
  padding: 42px;
  border: 4px dashed var(--red);
  color: var(--red);
  font-size: 35px;
  line-height: 1.5;
}

.mirror {
  display: grid;
  grid-template-columns: 1fr 160px 1fr;
  align-items: center;
  gap: 34px;
  margin-top: 34px;
}

.mirror-side {
  padding: 44px;
  border-top: 8px solid var(--purple);
  background: var(--soft);
  font-size: 30px;
  line-height: 1.55;
}

.mirror-center {
  color: var(--purple);
  font-family: var(--font-serif);
  font-size: 104px;
  text-align: center;
}

.paradox {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  margin-top: 40px;
}

.paradox-half {
  padding: 50px;
  min-height: 320px;
  box-sizing: border-box;
  background: var(--soft);
}

.paradox-half h3 {
  margin: 0 0 24px;
  font-family: var(--font-serif);
  font-size: 64px;
}

.paradox-half p {
  margin: 0;
  font-size: 30px;
  line-height: 1.55;
}

.paradox-half:last-child {
  background: var(--purple-soft);
}

.outputs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 30px;
}

.output-item {
  min-height: 330px;
  padding: 32px 28px;
  border-top: 8px solid var(--purple);
  background: var(--soft);
}

.output-item .index {
  display: block;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
}

.output-item h3 {
  margin: 26px 0 18px;
  font-size: 38px;
}

.output-item p {
  margin: 0;
  color: var(--muted);
  font-size: 24px;
  line-height: 1.5;
}

.layer-stack {
  display: grid;
  gap: 10px;
  width: 100%;
  margin-top: 10px;
}

.layer {
  display: grid;
  grid-template-columns: 110px 330px 1fr;
  align-items: center;
  padding: 15px 28px;
  background: var(--soft);
  font-size: 25px;
}

.layer .level {
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
}

.layer .name {
  font-size: 30px;
  font-weight: 700;
}

.layer:nth-child(4),
.layer:nth-child(5),
.layer:nth-child(6) {
  background: var(--purple-soft);
}

.ops-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 56px;
  align-items: stretch;
}

.ops-queue {
  position: relative;
  overflow: hidden;
  padding: 36px;
  background: var(--ink);
  color: #fff;
}

.ops-queue h3,
.ops-queue ul {
  position: relative;
  z-index: 2;
}

.ops-art {
  position: absolute;
  z-index: 1;
  right: -52px;
  bottom: -66px;
  width: 280px;
  opacity: 0.34;
}

.ops-queue h3 {
  margin: 0 0 30px;
  color: var(--acid);
  font-size: 42px;
}

.ops-queue ul {
  margin: 0;
  padding-left: 28px;
  font-size: 27px;
  line-height: 1.7;
}

.ops-actions {
  display: grid;
  gap: 13px;
}

.ops-action {
  display: grid;
  grid-template-columns: 190px 1fr 170px;
  align-items: center;
  padding: 18px 24px;
  background: var(--soft);
  font-size: 24px;
}

.ops-action .state {
  color: var(--purple);
  font-weight: 700;
}

.ops-action .owner {
  color: var(--muted);
  text-align: right;
}

.spam-forms {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  margin-top: 22px;
}

.spam-form {
  min-height: 360px;
  padding: 32px;
  box-sizing: border-box;
  border: 2px solid var(--rule);
}

.spam-form .icon {
  display: block;
  margin-bottom: 26px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
}

.spam-form h3 {
  margin: 0 0 18px;
  font-size: 35px;
}

.spam-form p {
  margin: 0;
  color: var(--muted);
  font-size: 23px;
  line-height: 1.55;
}

.art-corner {
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.crowd-slide {
  background-image: linear-gradient(rgba(255, 255, 255, 0.91), rgba(255, 255, 255, 0.94)), url("assets/platform-cleaner-crowd.jpg");
  background-position: center;
  background-size: cover;
}

.spectrum-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 36px;
  min-height: 500px;
}

.spectrum-art {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: #f4ead6;
}

.spectrum-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.spectrum-art figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 15px 20px;
  background: rgba(25, 25, 25, 0.84);
  color: #fff;
  font-size: 17px;
}

.severity-ladder {
  display: grid;
  grid-template-rows: 30px repeat(4, 1fr) 30px repeat(2, 1fr);
  gap: 6px;
}

.severity-band {
  display: flex;
  align-items: center;
  padding-left: 18px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.severity-band.restrictive {
  color: var(--red);
}

.severity-step {
  display: grid;
  grid-template-columns: 52px 120px 1fr;
  align-items: center;
  min-height: 54px;
  padding: 0 20px;
  border-left: 9px solid var(--purple);
  background: var(--purple-soft);
}

.severity-step:nth-of-type(3) { background: #e4ddff; }
.severity-step:nth-of-type(4) { background: #d2c7ff; }
.severity-step:nth-of-type(5) { background: #b8a8ff; }

.severity-step.dark {
  background: var(--purple);
  color: #fff;
}

.severity-step.black {
  border-left-color: var(--acid);
  background: var(--ink);
  color: #fff;
}

.severity-step span {
  font-family: var(--font-mono);
  font-size: 15px;
  opacity: 0.72;
}

.severity-step b {
  background: none;
  font-size: 24px;
}

.severity-step em {
  font-size: 17px;
  font-style: normal;
  line-height: 1.35;
}

.spectrum-principle {
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: center;
  margin-top: 18px;
  border-top: 3px solid var(--ink);
  padding-top: 14px;
}

.spectrum-principle span {
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
}

.spectrum-principle b {
  background: none;
  font-size: 25px;
}

.loop {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 44px;
  align-items: center;
  margin-top: 45px;
}

.loop-node {
  position: relative;
  min-height: 260px;
  padding: 34px 28px;
  box-sizing: border-box;
  background: var(--soft);
  border-bottom: 8px solid var(--purple);
  font-size: 25px;
  line-height: 1.45;
}

.loop-node::after {
  content: "→";
  position: absolute;
  right: -40px;
  top: 90px;
  color: var(--purple);
  font-size: 46px;
}

.loop-node:last-child::after {
  content: "↺";
}

.loop-node .name {
  display: block;
  margin-bottom: 18px;
  color: var(--purple);
  font-size: 32px;
  font-weight: 700;
}

.build-order {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 38px;
}

.build-step {
  position: relative;
  min-height: 310px;
  padding: 34px;
  background: var(--soft);
}

.build-step::after {
  content: "→";
  position: absolute;
  right: -22px;
  top: 126px;
  z-index: 2;
  color: var(--purple);
  font-size: 42px;
}

.build-step:last-child::after {
  content: none;
}

.build-step .n {
  display: block;
  color: var(--purple);
  font-family: var(--font-serif);
  font-size: 66px;
  font-weight: 700;
}

.build-step h3 {
  margin: 18px 0 14px;
  font-size: 34px;
}

.build-step p {
  margin: 0;
  color: var(--muted);
  font-size: 23px;
  line-height: 1.5;
}

.dataset-landscape {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
  font-size: 21px;
}

.dataset-landscape a {
  color: var(--ink);
  text-decoration-color: rgba(114, 88, 255, 0.5);
  text-underline-offset: 4px;
}

.dataset-landscape th,
.dataset-landscape td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: middle;
}

.dataset-landscape th {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.08em;
}

.yes {
  color: var(--green);
  font-weight: 700;
}

.no {
  color: #aaa;
}

.dataset-summary {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 64px;
  margin-top: 4px;
}

.dataset-count {
  padding: 42px;
  background: var(--ink);
  color: #fff;
}

.dataset-count .value {
  display: block;
  color: var(--acid);
  font-family: var(--font-serif);
  font-size: 112px;
  font-weight: 700;
}

.dataset-count .label {
  display: block;
  margin-top: 18px;
  font-size: 27px;
  line-height: 1.5;
}

.bars {
  display: grid;
  gap: 30px;
  align-content: center;
}

.bar-row {
  display: grid;
  grid-template-columns: 180px 1fr 150px;
  align-items: center;
  gap: 22px;
  font-size: 24px;
}

.bar-track {
  height: 42px;
  background: var(--soft);
}

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

.bar-fill.ham {
  background: var(--acid);
}

.data-foot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 34px;
}

.data-foot > div {
  padding-top: 20px;
  border-top: 3px solid var(--rule);
  color: var(--muted);
  font-size: 23px;
  line-height: 1.45;
}

.data-foot b {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 30px;
}

.lanes {
  display: grid;
  gap: 16px;
  margin-top: 2px;
}

.lane-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 2px;
}

.lane-detail {
  min-height: 268px;
  border: 1px solid var(--rule);
  background: #fff;
}

.lane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: 0 18px;
  background: var(--purple);
  color: #fff;
}

.lane-head .lane-name {
  font-size: 23px;
  font-weight: 700;
}

.lane-head em {
  font-size: 15px;
  font-style: normal;
  opacity: 0.78;
}

.lane-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
}

.lane-steps > span {
  position: relative;
  min-height: 104px;
  padding: 17px 14px 13px 42px;
  box-sizing: border-box;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  color: #555;
  font-size: 16px;
  line-height: 1.3;
}

.lane-steps > span:nth-child(3n) {
  border-right: 0;
}

.lane-steps > span:nth-child(n+4) {
  border-bottom: 0;
}

.lane-steps > span:not(:nth-child(3n))::after {
  content: "→";
  position: absolute;
  z-index: 2;
  top: 42px;
  right: -9px;
  color: var(--purple);
  background: #fff;
  font-size: 15px;
  font-weight: 700;
}

.lane-steps i {
  position: absolute;
  top: 17px;
  left: 14px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 13px;
  font-style: normal;
  font-weight: 700;
}

.lane-steps b {
  display: block;
  margin-bottom: 4px;
  background: none;
  color: var(--ink);
  font-size: 18px;
}

.lane-detail.ecom-lane .lane-head {
  background: var(--amber);
}

.lane-detail.matters-lane .lane-head {
  background: var(--green);
}

.lane-detail.ecom-lane .lane-steps i,
.lane-detail.ecom-lane .lane-steps > span:not(:nth-child(3n))::after {
  color: var(--amber);
}

.lane-detail.matters-lane .lane-steps i,
.lane-detail.matters-lane .lane-steps > span:not(:nth-child(3n))::after {
  color: var(--green);
}

.lane {
  display: grid;
  grid-template-columns: 210px 1fr 150px 1fr 150px 1fr;
  align-items: center;
  min-height: 106px;
  padding: 0 24px;
  background: var(--soft);
  font-size: 21px;
}

.lane .lane-name {
  color: var(--purple);
  font-size: 27px;
  font-weight: 700;
}

.lane .arrow {
  color: var(--purple);
  font-size: 34px;
  text-align: center;
}

.compare {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  margin-top: 0;
  font-size: 21px;
}

.compare th,
.compare td {
  padding: 15px 17px;
  border-bottom: 1px solid var(--rule);
  vertical-align: middle;
}

.compare th {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.06em;
  text-align: left;
}

.compare th:first-child,
.compare td:first-child {
  width: 160px;
  font-weight: 700;
}

.compare td:nth-child(2) {
  background: rgba(114, 88, 255, 0.06);
}

.compare td:nth-child(5) {
  background: rgba(195, 244, 50, 0.12);
}

.plot {
  position: relative;
  height: 590px;
  margin: 0 70px 0 120px;
  border-left: 4px solid var(--ink);
  border-bottom: 4px solid var(--ink);
}

.plot::before {
  content: "整站／整個網域";
  position: absolute;
  left: -104px;
  top: -8px;
  color: var(--muted);
  font-size: 18px;
  writing-mode: vertical-rl;
}

.plot::after {
  content: "單一內容／商品  →  帳號  →  整個網域";
  position: absolute;
  right: 0;
  bottom: -48px;
  color: var(--muted);
  font-size: 19px;
}

.plot-y-label {
  position: absolute;
  left: -100px;
  bottom: 0;
  color: var(--muted);
  font-size: 18px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.bubble {
  position: absolute;
  width: 178px;
  height: 178px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  box-sizing: border-box;
  background: var(--purple);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
}

.bubble.dns { right: 40px; top: 32px; width: 220px; height: 220px; background: var(--ink); }
.bubble.iwin { left: 330px; top: 140px; background: #9b88ff; }
.bubble.ecom { left: 145px; top: 252px; background: var(--amber); }
.bubble.matters { left: 430px; top: 350px; background: var(--green); }

.ncc-context {
  display: grid;
  grid-template-columns: 1fr 170px 1fr;
  gap: 34px;
  align-items: center;
  margin-top: 34px;
}

.guide {
  min-height: 310px;
  padding: 42px;
  box-sizing: border-box;
  border-top: 8px solid var(--purple);
  background: var(--soft);
}

.guide h3 {
  margin: 0 0 20px;
  font-size: 38px;
}

.guide p {
  margin: 0;
  color: var(--muted);
  font-size: 26px;
  line-height: 1.5;
}

.ncc-plus {
  color: var(--purple);
  font-size: 90px;
  text-align: center;
}

.ncc-counts {
  display: flex;
  justify-content: center;
  gap: 44px;
  margin-top: 34px;
}

.count-chip {
  padding: 15px 28px;
  background: var(--purple-soft);
  font-size: 24px;
}

.self-audit {
  display: grid;
  grid-template-columns: 0.84fr 1.16fr;
  gap: 58px;
}

.audit-bars {
  display: grid;
  gap: 22px;
}

.audit-row {
  display: grid;
  grid-template-columns: 270px 1fr;
  align-items: center;
  gap: 20px;
  font-size: 23px;
}

.audit-status {
  padding: 16px 20px;
  background: var(--purple-soft);
  color: var(--purple);
  font-weight: 700;
  text-align: center;
}

.built-list {
  display: grid;
  gap: 14px;
}

.built-item {
  padding: 19px 24px;
  border-left: 7px solid var(--purple);
  background: var(--soft);
  font-size: 24px;
  line-height: 1.4;
}

.blueprint {
  display: grid;
  grid-template-columns: 1.05fr 120px 1.35fr;
  gap: 34px;
  align-items: center;
  margin-top: 28px;
}

.schema {
  padding: 38px;
  background: var(--ink);
  color: #fff;
}

.schema h3 {
  margin: 0 0 28px;
  color: var(--acid);
  font-size: 40px;
}

.schema-lines {
  display: grid;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 20px;
}

.blueprint-arrow {
  color: var(--purple);
  font-size: 78px;
  text-align: center;
}

.modules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.module {
  min-height: 170px;
  padding: 26px;
  box-sizing: border-box;
  background: var(--soft);
}

.module h3 {
  margin: 0 0 12px;
  font-size: 29px;
}

.module p {
  margin: 0;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.45;
}

.roost-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 60px;
  align-items: stretch;
}

.roost-proof {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 38px;
  min-height: 580px;
}

.roost-visual {
  display: grid;
  grid-template-rows: 1fr 38px;
  margin: 0;
}

.roost-shot {
  display: block;
  overflow: hidden;
  border: 2px solid var(--rule);
  background: var(--soft);
}

.roost-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
}

.roost-visual figcaption {
  padding-top: 10px;
  color: var(--purple);
  font-size: 17px;
  font-weight: 700;
}

.roost-summary {
  display: grid;
  grid-template-rows: 145px 1fr 78px;
  gap: 16px;
}

.roost-summary b,
.roost-summary span {
  display: block;
}

.roost-summary b {
  margin-bottom: 6px;
  color: var(--purple);
  font-size: 24px;
}

.roost-summary span {
  color: var(--muted);
  font-size: 19px;
  line-height: 1.4;
}

.roost-summary .roost-stat {
  display: grid;
  align-content: center;
  padding: 24px 28px;
  background: var(--ink);
  color: #fff;
}

.roost-summary .roost-stat .count {
  margin-bottom: 7px;
  color: var(--acid);
  font-family: var(--font-serif);
  font-size: 60px;
  font-weight: 700;
  line-height: 1;
}

.roost-summary .roost-stat span {
  color: rgba(255, 255, 255, 0.72);
}

.roost-chain {
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  border-left: 6px solid var(--purple);
  background: var(--soft);
}

.roost-chain > div {
  position: relative;
  display: grid;
  align-content: center;
  padding: 14px 22px;
  border-bottom: 1px solid var(--rule);
}

.roost-chain > div:last-child {
  border-bottom: 0;
}

.roost-chain > div:not(:last-child)::after {
  content: "↓";
  position: absolute;
  z-index: 2;
  bottom: -12px;
  left: 50%;
  color: var(--purple);
  background: var(--soft);
  font-size: 18px;
  font-weight: 700;
}

.roost-keep {
  display: grid;
  align-content: center;
  padding: 13px 20px;
  border: 2px solid var(--green);
}

.roost-keep span {
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.roost-keep b {
  margin-top: 3px;
  background: none;
  color: var(--ink);
  font-size: 18px;
}

.roost-count {
  padding: 44px;
  background: var(--ink);
  color: #fff;
}

.roost-count .value {
  display: block;
  color: var(--acid);
  font-family: var(--font-serif);
  font-size: 126px;
  font-weight: 700;
}

.roost-count p {
  margin: 20px 0 0;
  font-size: 27px;
  line-height: 1.5;
}

.roost-map {
  display: grid;
  gap: 16px;
}

.roost-row {
  display: grid;
  grid-template-columns: 280px 70px 1fr;
  align-items: center;
  min-height: 112px;
  padding: 0 28px;
  background: var(--soft);
}

.roost-row strong {
  color: var(--purple);
  font-size: 29px;
}

.roost-row .arrow {
  color: var(--purple);
  font-size: 38px;
  text-align: center;
}

.roost-row span:last-child {
  font-size: 24px;
  line-height: 1.45;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
  margin-top: 32px;
}

.action {
  min-height: 480px;
  padding: 38px;
  box-sizing: border-box;
  border-top: 10px solid var(--purple);
  background: var(--soft);
}

.action .n {
  display: block;
  color: var(--purple);
  font-family: var(--font-serif);
  font-size: 78px;
  font-weight: 700;
}

.action h3 {
  margin: 16px 0 20px;
  font-size: 42px;
}

.action p {
  margin: 0;
  color: #444;
  font-size: 26px;
  line-height: 1.55;
}

.action:last-child {
  background: var(--purple-soft);
}

@media print {
  section::after,
  .source {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}