:root {
  --cream: #f6efe4;
  --cream-2: #efe6d6;
  --ink: #1b2a4a;
  --ink-soft: #3d4d6e;
  --sky: #4db8e8;
  --sky-deep: #2a8fc4;
  --coral: #e24b4b;
  --coral-dark: #c83a3a;
  --paper: #fffcf7;
  --line: #d8cbb8;
  --shadow: 0 18px 40px rgba(27, 42, 74, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.55;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--sky-deep);
}

a:hover {
  color: var(--coral);
}

.wrap {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0 0;
}

.mark {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.mark img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 10px;
}

.nav-link {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
  padding: 2.4rem 0 3rem;
}

.kicker {
  margin: 0 0 0.55rem;
  color: var(--sky-deep);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.7rem;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.lede {
  margin: 0 0 1.4rem;
  color: var(--ink-soft);
  font-size: 1.15rem;
  max-width: 34rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(180deg, var(--sky) 0%, var(--sky-deep) 100%);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 10px 22px rgba(42, 143, 196, 0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  color: #fff;
  filter: brightness(1.05);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(42, 143, 196, 0.34);
}

.btn-ghost {
  background: rgba(77, 184, 232, 0.12);
  color: var(--sky-deep);
  box-shadow: none;
  border: 1px solid var(--sky);
}

.btn-ghost:hover {
  color: var(--sky-deep);
  background: rgba(77, 184, 232, 0.2);
  border-color: var(--sky-deep);
  filter: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(42, 143, 196, 0.14);
}

.logo-card {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 0.6rem;
  box-shadow: var(--shadow);
}

.logo-card img {
  display: block;
  width: 100%;
  border-radius: 22px;
}

.hint {
  margin: 0.55rem 0 0;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

section {
  padding: 0 0 2.6rem;
}

h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.bullets li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.95rem 1.05rem;
}

.bullets strong {
  display: block;
  margin-bottom: 0.15rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem 1.15rem;
}

.card h3 {
  margin: 0 0 0.7rem;
  font-size: 1rem;
}

.card.can h3 {
  color: var(--sky-deep);
}

.card.cant h3 {
  color: var(--coral);
}

.card ul {
  margin: 0;
  padding-left: 1.1rem;
}

.card li + li {
  margin-top: 0.35rem;
}

pre {
  margin: 0;
  overflow-x: auto;
  background: var(--ink);
  color: #f6efe4;
  border-radius: 16px;
  padding: 1.1rem 1.2rem;
  font-size: 0.88rem;
  line-height: 1.6;
  box-shadow: var(--shadow);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.note {
  margin: 0.75rem 0 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

footer {
  border-top: 1px dashed var(--line);
  padding: 1.4rem 0 2.2rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  justify-content: space-between;
}

@media (max-width: 760px) {
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 1.4rem;
  }

  .logo-card {
    order: -1;
  }
}

.ideas {
  padding: 0 0 2.2rem;
}

.ideas-copy {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}