:root {
  --bg: #eef1ed;
  --ink: #10231c;
  --muted: #46635a;
  --line: #c6d9cf;
  --line-strong: #a9c7ba;
  --card: #fbfdfb;
  --teal: #0c6661;
  --teal-deep: #103a39;
  --shadow: 0 18px 40px rgba(22, 35, 32, 0.06);
  --r-lg: 22px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at top left, rgba(12, 102, 97, 0.09), transparent 28%),
    radial-gradient(circle at bottom right, rgba(160, 180, 150, 0.12), transparent 24%),
    linear-gradient(180deg, #f5f6f2 0%, #e8ece7 100%);
  color: var(--ink);
  font-family: "Manrope", sans-serif;
  line-height: 1.55;
  scroll-behavior: smooth;
}

body {
  padding: clamp(0.85rem, 1.5vw, 1.25rem);
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-family: "IBM Plex Mono", monospace;
  background: #ebf4ef;
  padding: 0.15rem 0.35rem;
  border-radius: 8px;
}

.page-shell {
  position: relative;
  z-index: 1;
}

.bg-orb {
  position: fixed;
  width: 38vmax;
  height: 38vmax;
  border-radius: 50%;
  filter: blur(55px);
  opacity: 0.32;
  z-index: 0;
  pointer-events: none;
}

.orb-a {
  top: -10vmax;
  left: -8vmax;
  background: radial-gradient(circle, #95e5cb 0%, #95e5cb00 62%);
}

.orb-b {
  right: -9vmax;
  bottom: -12vmax;
  background: radial-gradient(circle, #ffd8aa 0%, #ffd8aa00 62%);
}

.brand-bar,
.panel {
  position: relative;
  z-index: 1;
  max-width: 1480px;
  margin: 0 auto;
  padding: 1.2rem 1.4rem;
}

.brand-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  border-radius: calc(var(--r-lg) + 4px);
  background:
    radial-gradient(circle at top left, rgba(126, 200, 196, 0.14), transparent 26%),
    linear-gradient(135deg, #103a39 0%, #0c5450 52%, #0c6661 100%);
  border: 1px solid rgba(8, 53, 50, 0.62);
  box-shadow:
    0 22px 44px rgba(16, 43, 41, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-bottom: 0.8rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}

.brand-copy {
  min-width: 0;
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem 0.9rem;
  flex-wrap: wrap;
}

.brand-mark {
  width: 30px;
  height: 38px;
  flex: 0 0 auto;
  background: linear-gradient(180deg, #b9f0f2 0%, #59b3b7 42%, #13857f 100%);
  border-radius: 55% 55% 60% 60% / 72% 72% 42% 42%;
  transform: rotate(45deg);
  position: relative;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.34),
    0 10px 20px rgba(6, 31, 31, 0.22);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 7px 10px auto auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
}

.brand-kicker,
.eyebrow {
  margin: 0;
  color: rgba(230, 255, 250, 0.76);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.74rem;
}

.eyebrow {
  color: var(--teal);
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
  color: #f7fffd;
}

.brand-subtitle {
  max-width: 760px;
  margin-top: 0.4rem;
  color: rgba(234, 252, 248, 0.82);
}

.brand-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.brand-nav {
  margin-left: auto;
}

.brand-nav-checkbox,
.brand-nav-toggle {
  display: none;
}

.brand-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.78rem 1rem;
  border: 1px solid rgba(198, 241, 235, 0.32);
  border-radius: 14px;
  background: rgba(246, 253, 251, 0.12);
  color: #f1fcfa;
  font-weight: 800;
  letter-spacing: 0.01em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

.brand-button:hover {
  transform: translateY(-1px);
}

.brand-button:focus-visible,
.markdown-body a:focus-visible {
  outline: 2px solid rgba(12, 102, 97, 0.32);
  outline-offset: 3px;
}

.brand-nav-toggle:focus-visible {
  outline: 2px solid rgba(213, 248, 244, 0.46);
  outline-offset: 2px;
}

.brand-button-secondary {
  background: rgba(246, 253, 251, 0.08);
}

.brand-button-current {
  background: rgba(245, 255, 252, 0.95);
  color: #0d3f3d;
  border-color: rgba(198, 241, 235, 0.5);
}

.brand-button[data-emoji] {
  position: relative;
  overflow: hidden;
}

.brand-button[data-emoji]::after {
  content: attr(data-emoji);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  color: #f4fffc;
  font-size: 1.1rem;
  transition: opacity 120ms ease;
}

.brand-button-current[data-emoji]::after {
  color: #0d3f3d;
}

@media (hover: hover) {
  .brand-button[data-emoji]:hover {
    color: transparent;
  }

  .brand-button[data-emoji]:hover::after {
    opacity: 1;
  }
}

.panel {
  margin-bottom: 1rem;
  background: #ffffffdb;
  border: 1px solid #ffffff;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
}

.status {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.document-panel {
  padding-top: 1rem;
}

.status {
  margin-bottom: 1rem;
}

.status.error {
  color: #9a3412;
}

.markdown-body {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(1.15rem, 2vw, 1.7rem);
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body > :last-child {
  margin-bottom: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  scroll-margin-top: 1.25rem;
}

.markdown-body h2 {
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: clamp(1.35rem, 2vw, 1.75rem);
}

.markdown-body h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.markdown-body h3 {
  margin-top: 1.4rem;
  font-size: 1.08rem;
}

.markdown-body p {
  margin: 0.8rem 0;
}

.markdown-body strong {
  color: var(--teal-deep);
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.25rem;
  margin: 0.8rem 0;
}

.markdown-body li {
  margin: 0.38rem 0;
  padding-left: 0.12rem;
}

.markdown-body hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1.4rem 0;
}

.markdown-body pre,
.markdown-body blockquote {
  overflow-x: auto;
  background: #f4f7f5;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1rem;
}

.markdown-body pre {
  font-family: "IBM Plex Mono", monospace;
}

.markdown-body blockquote {
  margin: 1rem 0;
  border-left: 4px solid var(--line-strong);
}

.markdown-body a {
  color: var(--teal);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

@media (max-width: 640px) {
  .brand-bar,
  .panel {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .brand-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
  }

  .brand-lockup {
    width: 100%;
    gap: 0.7rem;
  }

  .brand-mark {
    width: 24px;
    height: 30px;
  }

  .brand-mark::after {
    inset: 6px 8px auto auto;
    width: 6px;
    height: 6px;
  }

  .brand-kicker,
  .eyebrow {
    font-size: 0.68rem;
    letter-spacing: 0.1em;
  }

  .brand-copy h1 {
    font-size: 1.7rem;
  }

  .brand-title-row {
    gap: 0.5rem 0.65rem;
  }

  .brand-subtitle {
    display: none;
  }

  .brand-actions {
    margin-left: 0;
    width: 100%;
    display: none;
    grid-template-columns: 1fr;
    gap: 0.55rem;
    margin-top: 0.65rem;
  }

  .brand-nav {
    width: 100%;
    margin-left: 0;
  }

  .brand-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 42px;
    padding: 0.68rem 0.84rem;
    border: 1px solid rgba(198, 241, 235, 0.32);
    border-radius: 14px;
    background: rgba(239, 251, 248, 0.14);
    color: #f4fffc;
    font-weight: 800;
    cursor: pointer;
  }

  .brand-nav-toggle::after {
    content: "+";
    font-size: 1rem;
    line-height: 1;
  }

  .brand-nav-checkbox:checked + .brand-nav-toggle::after {
    content: "-";
  }

  .brand-nav-checkbox:checked + .brand-nav-toggle + .brand-actions {
    display: grid;
  }

  .brand-button {
    width: 100%;
    min-height: 40px;
    padding: 0.62rem 0.82rem;
    font-size: 0.92rem;
  }

  .markdown-body {
    padding: 1rem;
  }
}