:root {
  color-scheme: light;
  --ink: #17201e;
  --muted: #65706c;
  --paper: #f4f5f1;
  --white: #ffffff;
  --line: #d7dcd7;
  --forest: #1d4e43;
  --forest-dark: #162d28;
  --rust: #b14d32;
  --yellow: #e1c45a;
  --purple: #d86cd2;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Noto Sans CJK SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.site-header {
  min-height: 70px;
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  color: var(--ink);
  text-decoration: none;
  font-size: 18px;
  font-weight: 800;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-header nav a {
  color: #46504d;
  text-decoration: none;
  font-size: 14px;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--rust);
}

.hero {
  min-height: 610px;
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  align-items: center;
  gap: 88px;
}

.kicker,
.section-number {
  margin: 0;
  color: var(--rust);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 18px 0 0;
  font-family: Georgia, "Noto Serif CJK SC", "Songti SC", serif;
  font-size: clamp(58px, 8vw, 102px);
  line-height: 1;
  font-weight: 700;
}

.hero-lead {
  max-width: 31em;
  margin: 30px 0 0;
  color: #505b57;
  font-size: 18px;
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.primary-action {
  min-height: 48px;
  padding: 11px 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  background: var(--forest);
  border: 1px solid var(--forest);
  border-radius: 5px;
  text-decoration: none;
  font-weight: 700;
}

.primary-action:hover,
.primary-action:focus-visible {
  background: var(--forest-dark);
}

.text-action {
  color: var(--ink);
  text-underline-offset: 5px;
  font-size: 14px;
  font-weight: 700;
}

.identity {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.identity img {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: pixelated;
}

.identity-meta {
  min-height: 52px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  text-transform: uppercase;
}

.log-section {
  padding: 92px max(20px, calc((100% - var(--max-width)) / 2));
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-intro {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 24px;
  margin-bottom: 44px;
}

.section-intro h2,
.github-band h2 {
  margin: 0;
  font-family: Georgia, "Noto Serif CJK SC", "Songti SC", serif;
  font-size: 36px;
  line-height: 1.25;
}

.section-intro p:not(.section-number),
.github-band p:not(.section-number) {
  margin: 10px 0 0;
  color: var(--muted);
}

.log-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.log-list li {
  min-height: 134px;
  padding: 26px 0;
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 120px;
  align-items: start;
  gap: 28px;
  border-bottom: 1px solid var(--line);
}

.log-list time,
.pending-date {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
}

.log-entry h3 {
  margin: 0;
  font-size: 19px;
}

.log-entry p {
  max-width: 43em;
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.log-tag {
  justify-self: end;
  color: var(--rust);
  font-size: 12px;
  font-weight: 700;
}

.next-entry {
  opacity: .65;
}

.principles {
  padding: 92px max(20px, calc((100% - var(--max-width)) / 2));
  color: var(--white);
  background: var(--forest-dark);
}

.section-intro-light .section-number {
  color: var(--yellow);
}

.section-intro-light p:not(.section-number) {
  color: #b9c5c0;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, .3);
}

.principle-grid article {
  min-height: 230px;
  padding: 28px 30px 24px 0;
}

.principle-grid article + article {
  padding-left: 30px;
  border-left: 1px solid rgba(255, 255, 255, .2);
}

.principle-grid span {
  color: var(--yellow);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
}

.principle-grid h3 {
  margin: 46px 0 8px;
  font-size: 20px;
}

.principle-grid p {
  margin: 0;
  color: #b9c5c0;
  font-size: 14px;
}

.github-band {
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 260px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
}

.github-band a {
  color: var(--forest);
  text-underline-offset: 6px;
  font-weight: 800;
}

footer {
  min-height: 82px;
  padding: 0 max(20px, calc((100% - var(--max-width)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #6c7572;
  background: #e9ebe7;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.footer-copy,
.filing-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.filing-links {
  justify-content: flex-end;
}

.filing-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: inherit;
  text-decoration: none;
}

.filing-links img {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.filing-links a:hover,
.filing-links a:focus-visible {
  color: var(--rust);
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
    padding: 64px 0 72px;
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .identity {
    width: min(100%, 430px);
  }

  .log-list li {
    grid-template-columns: 110px minmax(0, 1fr);
  }

  .log-tag {
    grid-column: 2;
    justify-self: start;
  }

  .github-band {
    padding: 58px 0;
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .github-band a {
    grid-column: 2;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 64px;
  }

  .site-header nav {
    gap: 16px;
  }

  .site-header nav a:first-child,
  .site-header nav a:nth-child(2) {
    display: none;
  }

  h1 {
    font-size: 54px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-intro {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .section-intro h2,
  .github-band h2 {
    font-size: 29px;
  }

  .log-list li {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .log-tag {
    grid-column: 1;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }

  .principle-grid article {
    min-height: 180px;
    padding: 26px 0;
  }

  .principle-grid article + article {
    padding-left: 0;
    border-top: 1px solid rgba(255, 255, 255, .2);
    border-left: 0;
  }

  .principle-grid h3 {
    margin-top: 28px;
  }

  .github-band {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .github-band a {
    grid-column: 1;
    margin-top: 18px;
  }

  footer {
    padding-top: 20px;
    padding-bottom: 20px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
  }

  .footer-copy,
  .filing-links {
    align-items: flex-start;
    flex-direction: column;
    justify-content: flex-start;
    gap: 4px;
  }
}