:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --panel: #ffffff;
  --ink: #1c2430;
  --muted: #627083;
  --line: #dfe5ea;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --soft: #e8f3f1;
  --code: #f0f3f5;
  --shadow: 0 20px 50px rgba(31, 41, 55, .08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, .10), transparent 30rem),
    linear-gradient(180deg, #fbfcfd 0%, var(--bg) 26rem);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Yu Gothic UI", sans-serif;
  line-height: 1.78;
  overflow-wrap: anywhere;
}
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .92);
}
.shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}
.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 12rem;
}
.brand-name {
  color: var(--accent-strong);
  font-weight: 800;
}
.brand-lead {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.45;
}
nav {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}
nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: .92rem;
  line-height: 1;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 12px;
  background: #fff;
}
nav a:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}
.nav-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.nav-subnav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.nav-subnav a {
  background: var(--soft);
  border-color: #c5ded9;
  color: var(--accent-strong);
  font-size: .84rem;
  padding: 8px 10px;
}
main {
  width: min(920px, calc(100% - 32px));
  margin: 28px auto 72px;
}
article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: clamp(22px, 4vw, 48px);
}
h1, h2, h3, h4 {
  line-height: 1.35;
  letter-spacing: 0;
  scroll-margin-top: 96px;
}
h1 {
  margin: 0 0 1.1em;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  border-bottom: 1px solid var(--line);
  padding-bottom: .55em;
}
h2 {
  margin-top: 2.2em;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  padding-left: .7rem;
  border-left: 5px solid var(--accent);
}
h3 {
  margin-top: 1.8em;
  font-size: 1.16rem;
}
p, li {
  font-size: 1rem;
}
a {
  color: var(--accent-strong);
  text-decoration-thickness: .08em;
  text-underline-offset: .18em;
}
ul, ol {
  padding-left: 1.4em;
}
li + li {
  margin-top: .35em;
}
code {
  background: var(--code);
  padding: .15em .38em;
  border-radius: 6px;
  font-size: .92em;
}
pre {
  overflow-x: auto;
  background: #101820;
  color: #f8fafc;
  padding: 16px;
  border-radius: 10px;
  line-height: 1.55;
}
pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  margin: 1.2em 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  display: block;
  max-width: 100%;
  overflow-x: auto;
  background: #fff;
}
tbody {
  display: table;
  width: 100%;
  border-collapse: collapse;
}
tr:first-child td {
  background: var(--soft);
  color: var(--accent-strong);
  font-weight: 700;
}
td, th {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  vertical-align: top;
  min-width: 7.5rem;
}
tr:last-child td {
  border-bottom: 0;
}
td:last-child, th:last-child {
  border-right: 0;
}
img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  display: block;
  margin: 1.4em auto;
}
blockquote {
  margin: 1.3em 0;
  padding: .8em 1em;
  border-left: 5px solid var(--accent);
  background: var(--soft);
  border-radius: 8px;
}
.slide-page h1,
.slide-page h2 {
  border: 0;
  padding-left: 0;
}
.slide-deck-hero {
  margin-bottom: 24px;
}
.slide-deck-hero h1 {
  margin-bottom: .45em;
}
.slide-deck {
  display: grid;
  gap: 28px;
}
.slide-card {
  aspect-ratio: 16 / 9;
  min-height: 440px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 5vw, 64px);
  border-radius: 18px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top right, rgba(15, 118, 110, .12), transparent 18rem),
    linear-gradient(135deg, #ffffff 0%, #f8fbfb 100%);
  box-shadow: var(--shadow);
}
.slide-card h2 {
  margin: 0 0 .7em;
  color: var(--ink);
  font-size: clamp(1.8rem, 4vw, 3rem);
}
.slide-content {
  max-width: 780px;
}
.slide-content p {
  font-size: clamp(1.08rem, 2vw, 1.38rem);
  line-height: 1.72;
}
.slide-content li {
  font-size: clamp(1.02rem, 1.7vw, 1.22rem);
}
.slide-content img {
  width: min(100%, 760px);
  max-height: 68vh;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 14px;
}
@media (max-width: 720px) {
  .shell, main {
    width: min(100% - 20px, 920px);
  }
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }
  nav {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    padding-bottom: 4px;
  }
  nav a {
    white-space: nowrap;
    font-size: .88rem;
    padding: 9px 10px;
  }
  .nav-group,
  .nav-subnav {
    flex-wrap: nowrap;
  }
  .nav-subnav a {
    font-size: .8rem;
    padding: 7px 9px;
  }
  main {
    margin-top: 18px;
    margin-bottom: 40px;
  }
  article {
    border-radius: 12px;
    padding: 20px;
  }
  h1 {
    font-size: 1.72rem;
  }
  h2 {
    font-size: 1.25rem;
  }
  p, li {
    font-size: .98rem;
  }
  td, th {
    min-width: 8rem;
    padding: 9px 10px;
  }
  .slide-card {
    aspect-ratio: auto;
    min-height: 72vh;
    padding: 22px;
  }
  .slide-card h2 {
    font-size: 1.55rem;
  }
  .slide-content p {
    font-size: 1.02rem;
  }
}