.cloud-lesson * {
  box-sizing: border-box;
}

.cloud-lesson {
  --ink: #102a43;
  --muted: #526777;
  --paper: #ffffff;
  --navy: #12395b;
  --teal: #087f8c;
  --teal-light: #dff5f3;
  --orange: #f47c48;
  --yellow: #f5c451;
  --line: #cddbdc;
  --soft: #f5f8f8;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(18px, 4vw, 48px);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

.cloud-lesson a {
  color: #066a75;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.cloud-lesson a:hover {
  color: #b54d24;
}

.cloud-lesson a:focus-visible,
.cloud-lesson summary:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

.cloud-lesson h1,
.cloud-lesson h2,
.cloud-lesson h3 {
  color: var(--navy);
  line-height: 1.18;
  text-wrap: balance;
}

.cloud-lesson h1 {
  max-width: 850px;
  margin: 12px 0 8px;
  font-size: clamp(2.35rem, 7vw, 5.7rem);
  letter-spacing: -0.055em;
}

.cloud-lesson h2 {
  margin: 0 0 22px;
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  letter-spacing: -0.025em;
}

.cloud-lesson h3 {
  margin: 28px 0 10px;
  font-size: clamp(1.15rem, 2vw, 1.42rem);
}

.cloud-lesson p,
.cloud-lesson ul,
.cloud-lesson ol {
  margin-top: 0;
}

.cloud-lesson li + li {
  margin-top: 7px;
}

.cloud-lesson .hero {
  position: relative;
  overflow: hidden;
  min-height: 470px;
  padding: clamp(28px, 6vw, 72px);
  border-radius: 28px;
  background: var(--navy);
  color: #ffffff;
  isolation: isolate;
}

.cloud-lesson .hero::before,
.cloud-lesson .hero::after {
  position: absolute;
  z-index: -1;
  border: 2px solid rgb(255 255 255 / 18%);
  border-radius: 50%;
  content: "";
}

.cloud-lesson .hero::before {
  right: -110px;
  bottom: -180px;
  width: 520px;
  height: 520px;
}

.cloud-lesson .hero::after {
  top: -130px;
  right: 90px;
  width: 310px;
  height: 310px;
}

.cloud-lesson .eyebrow {
  display: inline-block;
  margin: 0;
  padding: 7px 12px;
  border: 1px solid rgb(255 255 255 / 28%);
  border-radius: 999px;
  background: rgb(255 255 255 / 10%);
  color: #bff5ef;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cloud-lesson .hero h1,
.cloud-lesson .hero h2 {
  color: #ffffff;
}

.cloud-lesson .hero h2 {
  max-width: 650px;
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 500;
}

.cloud-lesson .hero-intro {
  max-width: 710px;
  margin: 28px 0 0;
  color: #d9e9f2;
  font-size: 1.08rem;
}

.cloud-lesson .hero-tag {
  display: inline-block;
  margin-top: 30px;
  padding: 10px 15px;
  border-radius: 8px;
  background: var(--yellow);
  color: #26384a;
  font-weight: 800;
}

.cloud-lesson .lesson-nav {
  margin: 24px 0 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
}

.cloud-lesson .lesson-nav strong {
  display: block;
  margin-bottom: 10px;
  color: var(--navy);
}

.cloud-lesson .lesson-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cloud-lesson .lesson-nav li {
  margin: 0;
}

.cloud-lesson .section {
  margin-top: 30px;
  padding: clamp(24px, 5vw, 54px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--paper);
}

.cloud-lesson .lead {
  max-width: 840px;
  color: #29485f;
  font-size: 1.12rem;
}

.cloud-lesson .goals,
.cloud-lesson .card-grid,
.cloud-lesson .pros-cons,
.cloud-lesson .security-grid,
.cloud-lesson .scenario-grid {
  display: grid;
  gap: 16px;
}

.cloud-lesson .goals {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.cloud-lesson .goal,
.cloud-lesson .service-card,
.cloud-lesson .security-card,
.cloud-lesson .scenario {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--soft);
}

.cloud-lesson .goal strong {
  color: var(--teal);
}

.cloud-lesson .callout {
  margin: 26px 0;
  padding: 20px 22px;
  border-left: 6px solid var(--teal);
  border-radius: 0 14px 14px 0;
  background: var(--teal-light);
}

.cloud-lesson .callout.warning {
  border-left-color: var(--orange);
  background: #fff1e9;
}

.cloud-lesson .callout.security {
  border-left-color: #7559b7;
  background: #f1edfb;
}

.cloud-lesson .callout.curiosity {
  border-left-color: var(--yellow);
  background: #fff8dc;
}

.cloud-lesson .callout-title {
  display: block;
  margin-bottom: 5px;
  color: var(--navy);
  font-weight: 850;
  letter-spacing: 0.03em;
}

.cloud-lesson .callout p:last-child,
.cloud-lesson .callout ul:last-child {
  margin-bottom: 0;
}

.cloud-lesson .flow {
  display: grid;
  grid-template-columns: repeat(6, minmax(115px, 1fr));
  gap: 26px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.cloud-lesson .flow li {
  position: relative;
  display: grid;
  min-height: 110px;
  margin: 0;
  padding: 16px 12px;
  place-items: center;
  border: 2px solid #abd8d4;
  border-radius: 14px;
  background: #f2fbfa;
  color: var(--navy);
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.3;
  text-align: center;
  text-transform: uppercase;
}

.cloud-lesson .flow li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -23px;
  color: var(--orange);
  content: "→";
  font-size: 1.45rem;
  transform: translateY(-50%);
}

.cloud-lesson .flow-explanation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.cloud-lesson .flow-explanation div {
  padding: 15px 18px;
  border-top: 3px solid var(--teal);
  background: var(--soft);
}

.cloud-lesson .table-scroll {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  -webkit-overflow-scrolling: touch;
}

.cloud-lesson table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: #ffffff;
  font-size: 0.94rem;
}

.cloud-lesson caption {
  padding: 14px 16px;
  background: #eaf4f4;
  color: var(--navy);
  font-weight: 800;
  text-align: left;
}

.cloud-lesson th,
.cloud-lesson td {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.cloud-lesson th:last-child,
.cloud-lesson td:last-child {
  border-right: 0;
}

.cloud-lesson tbody tr:last-child th,
.cloud-lesson tbody tr:last-child td {
  border-bottom: 0;
}

.cloud-lesson thead th {
  background: var(--navy);
  color: #ffffff;
}

.cloud-lesson tbody th {
  color: var(--navy);
  font-weight: 800;
}

.cloud-lesson .card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 26px 0;
}

.cloud-lesson .service-card {
  border-top: 6px solid var(--teal);
  background: #ffffff;
  box-shadow: 0 12px 28px rgb(16 42 67 / 8%);
}

.cloud-lesson .service-card:nth-child(2) {
  border-top-color: #3875c5;
}

.cloud-lesson .service-card:nth-child(3) {
  border-top-color: var(--orange);
}

.cloud-lesson .service-card h3 {
  margin-top: 0;
}

.cloud-lesson .service-card p:last-child {
  margin-bottom: 0;
}

.cloud-lesson .sync-steps {
  margin: 24px 0;
  padding: 0;
  counter-reset: sync;
  list-style: none;
}

.cloud-lesson .sync-steps li {
  position: relative;
  margin: 0 0 12px;
  padding: 17px 18px 17px 64px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--soft);
  counter-increment: sync;
}

.cloud-lesson .sync-steps li::before {
  position: absolute;
  top: 13px;
  left: 14px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--teal);
  color: #ffffff;
  content: counter(sync);
  font-weight: 850;
}

.cloud-lesson .equation {
  margin: 28px 0;
  padding: 28px 18px;
  border: 2px solid var(--orange);
  border-radius: 16px;
  background: #fff8f4;
  color: var(--navy);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: 0.02em;
  text-align: center;
}

.cloud-lesson .permission-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.cloud-lesson .permission-list div {
  padding: 18px;
  border-radius: 14px;
  background: var(--soft);
  border-top: 4px solid var(--teal);
}

.cloud-lesson .permission-list strong {
  display: block;
  margin-bottom: 6px;
  color: var(--navy);
}

.cloud-lesson .pros-cons {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cloud-lesson .pros-cons > div {
  padding: 22px;
  border-radius: 16px;
}

.cloud-lesson .pros {
  background: #e6f7ed;
}

.cloud-lesson .limits {
  background: #fff0e8;
}

.cloud-lesson .pros-cons h3 {
  margin-top: 0;
}

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

.cloud-lesson .security-card {
  background: #fbfafc;
  border-left: 5px solid #7559b7;
}

.cloud-lesson .security-card h3 {
  margin-top: 0;
}

.cloud-lesson .exercise {
  margin-top: 22px;
  padding: 24px;
  border: 2px dashed var(--teal);
  border-radius: 18px;
  background: #f7fcfb;
}

.cloud-lesson .exercise h3 {
  margin-top: 0;
}

.cloud-lesson pre {
  overflow-x: auto;
  margin: 18px 0;
  padding: 20px;
  border-radius: 13px;
  background: #102a43;
  color: #e9fbf8;
  font: 0.93rem/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}

.cloud-lesson .scenario-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cloud-lesson .scenario h3 {
  margin-top: 0;
}

.cloud-lesson details {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #ffffff;
}

.cloud-lesson summary {
  padding: 16px 18px;
  color: var(--navy);
  cursor: pointer;
  font-weight: 850;
}

.cloud-lesson details > div {
  padding: 0 18px 18px;
}

.cloud-lesson .quiz li {
  margin-bottom: 10px;
}

.cloud-lesson .checklist {
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 30px;
  list-style: none;
}

.cloud-lesson .checklist li {
  break-inside: avoid;
  margin: 0 0 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--soft);
}

.cloud-lesson .takeaways {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: takeaway;
}

.cloud-lesson .takeaways li {
  position: relative;
  margin: 0;
  padding: 17px 16px 17px 54px;
  border-radius: 12px;
  background: var(--soft);
  counter-increment: takeaway;
}

.cloud-lesson .takeaways li::before {
  position: absolute;
  top: 14px;
  left: 14px;
  color: var(--orange);
  content: counter(takeaway, decimal-leading-zero);
  font-weight: 900;
}

.cloud-lesson .source-links {
  font-size: 0.92rem;
}

.cloud-lesson .footer-note {
  margin-top: 30px;
  padding: 22px;
  border-radius: 16px;
  background: var(--navy);
  color: #ffffff;
  text-align: center;
}

@media (max-width: 900px) {
  .cloud-lesson .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cloud-lesson .flow li:not(:last-child)::after {
    content: none;
  }

  .cloud-lesson .card-grid,
  .cloud-lesson .scenario-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .cloud-lesson {
    padding: 12px;
    font-size: 16px;
  }

  .cloud-lesson .hero,
  .cloud-lesson .section {
    border-radius: 18px;
  }

  .cloud-lesson .hero {
    min-height: auto;
  }

  .cloud-lesson .goals,
  .cloud-lesson .flow,
  .cloud-lesson .flow-explanation,
  .cloud-lesson .permission-list,
  .cloud-lesson .pros-cons,
  .cloud-lesson .security-grid,
  .cloud-lesson .takeaways {
    grid-template-columns: 1fr;
  }

  .cloud-lesson .checklist {
    columns: 1;
  }
}

@media print {
  .cloud-lesson {
    max-width: none;
    padding: 0;
    font-size: 11pt;
  }

  .cloud-lesson .hero,
  .cloud-lesson .footer-note {
    background: #ffffff;
    color: #000000;
    border: 2px solid #000000;
  }

  .cloud-lesson .hero h1,
  .cloud-lesson .hero h2 {
    color: #000000;
  }

  .cloud-lesson .hero-intro {
    color: #222222;
  }

  .cloud-lesson .section {
    break-inside: avoid-page;
  }
}