@font-face {
  font-family: "ComicNeueBold";
  src: url("/assets/ComicNeue-Bold.ttf") format("truetype");
  font-display: swap;
}

:root {
  --brand-a: #cce6ff;
  --brand-b: #ffb3cc;
  --brand-c: #8ae8e2;
  --brand-d: #f48fb1;
  --ink: #0f1622;
  --ink-soft: #2f3b4b;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --line: rgba(15, 22, 34, 0.12);
  --line-strong: rgba(15, 22, 34, 0.2);
  --focus: #111111;
  --shadow: 0 22px 50px rgba(29, 27, 39, 0.12);
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Avenir Next", "Avenir", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  line-height: 1.58;
  background:
    radial-gradient(900px 500px at 8% -10%, rgba(138, 232, 226, 0.5), transparent 58%),
    radial-gradient(900px 520px at 96% -4%, rgba(244, 143, 177, 0.42), transparent 58%),
    linear-gradient(120deg, rgba(204, 230, 255, 0.46), rgba(255, 179, 204, 0.4)),
    #f7fbff;
  min-height: 100vh;
}

a {
  color: #0b2b73;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 2px;
}

a:hover {
  color: #0e43b9;
}

.container {
  width: min(1020px, 92vw);
  margin: 0 auto;
}

.site {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.72);
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: "ComicNeueBold", "Avenir Next", "Avenir", sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  box-shadow: 0 10px 22px rgba(80, 51, 67, 0.18);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

nav a {
  text-decoration: none;
  color: #1a2a42;
  font-weight: 700;
  font-size: 0.96rem;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 7px 12px;
}

nav a:hover {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.88);
}

main {
  padding: 24px 0 44px;
}

.hero,
.content {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 28px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(204, 230, 255, 0.45), rgba(255, 179, 204, 0.33));
  pointer-events: none;
}

.hero > * {
  position: relative;
}

.hero-logo {
  width: min(220px, 46vw);
  height: auto;
  display: block;
  margin: 0 0 6px;
  filter: drop-shadow(0 10px 20px rgba(29, 27, 39, 0.12));
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.82);
  color: #223;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 12px;
}

.kicker .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand-c), var(--brand-d));
}

h1,
h2,
h3 {
  color: #0d1220;
}

h1 {
  margin: 12px 0 10px;
  font-family: "ComicNeueBold", "Avenir Next", "Avenir", sans-serif;
  font-size: clamp(1.85rem, 4.6vw, 2.9rem);
  line-height: 1.1;
}

h2 {
  margin: 22px 0 10px;
  font-size: 1.3rem;
  line-height: 1.2;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
}

p,
li {
  color: var(--ink-soft);
}

.content {
  margin-top: 14px;
  background: var(--surface-solid);
  padding: 22px;
}

.card-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  padding: 14px;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.card p {
  margin: 0;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(34, 26, 50, 0.15);
  border-color: rgba(34, 26, 50, 0.25);
}

.notice {
  border-radius: 12px;
  border: 1px solid #efd37f;
  background: #fff7d8;
  padding: 11px 12px;
}

.list-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.soft {
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(204, 230, 255, 0.22), rgba(255, 179, 204, 0.22));
  padding: 12px;
}

ul,
ol {
  padding-left: 22px;
  margin-top: 8px;
}

.meta {
  color: #5d6777;
  font-size: 0.94rem;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 20px;
  padding-top: 13px;
  color: #556172;
}

.fade-in {
  animation: fade-in 0.45s ease-out both;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 760px) {
  .row {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero,
  .content {
    padding: 18px;
  }

  nav a {
    font-size: 0.92rem;
    padding: 6px 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .card {
    animation: none;
    transition: none;
  }
}