:root {
  --text: #111318;
  --muted: #5d6675;
  --soft: #f5f7fb;
  --line: #dde3ec;
  --accent: #ff4f1f;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
p,
ul {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  color: var(--text);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-top: 2rem;
  margin-bottom: .5rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 800;
}

h3 {
  margin-top: 1.25rem;
  margin-bottom: .25rem;
  color: var(--text);
  font-size: .98rem;
  font-weight: 760;
}

p,
li {
  color: var(--muted);
  font-size: .95rem;
}

li {
  margin-left: 1.2rem;
}

table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

th,
td {
  padding: .65rem 1rem .65rem 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--text);
}

[data-lang] {
  display: none;
}

[data-lang].show {
  display: block;
}

.navbar {
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, .05);
}

.lb {
  min-width: 38px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
}

.lb.a,
.lb:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.sep {
  height: 1px;
  background: var(--line);
}

.tag,
.warn {
  border: 1px solid rgba(255, 79, 31, .22);
  background: rgba(255, 79, 31, .08);
  color: var(--accent);
}

.tag {
  display: inline-block;
  margin-right: 4px;
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 800;
}

.warn {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: .9rem;
}

.fixed {
  position: fixed;
}

.top-0 {
  top: 0;
}

.w-full {
  width: 100%;
}

.z-50 {
  z-index: 50;
}

.max-w-4xl {
  max-width: 920px;
}

.mx-auto {
  margin-right: auto;
  margin-left: auto;
}

.px-6 {
  padding-right: 24px;
  padding-left: 24px;
}

.py-3 {
  padding-top: 12px;
  padding-bottom: 12px;
}

.pt-28 {
  padding-top: 112px;
}

.pb-20 {
  padding-bottom: 80px;
}

.p-8 {
  padding: 32px;
}

.p-5 {
  padding: 20px;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: 4px;
}

.gap-6 {
  gap: 24px;
}

.overflow-x-auto {
  overflow-x: auto;
}

.text-left {
  text-align: left;
}

.text-white,
.font-bold {
  color: var(--text);
}

.text-xs {
  font-size: .78rem;
}

.text-sm {
  font-size: .9rem;
}

.text-base {
  font-size: 1rem;
}

.text-lg {
  font-size: 1.1rem;
}

.text-3xl {
  font-size: clamp(2rem, 5vw, 3rem);
}

.font-bold,
.font-extrabold,
.font-600 {
  font-weight: 850;
}

.no-underline {
  text-decoration: none;
}

.mt-1 {
  margin-top: .25rem;
}

.mt-2 {
  margin-top: .5rem;
}

.mt-3 {
  margin-top: .75rem;
}

.mt-4 {
  margin-top: 1rem;
}

.mb-1 {
  margin-bottom: .25rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.my-8 {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.py-2 {
  padding-top: .5rem;
  padding-bottom: .5rem;
}

.pr-4 {
  padding-right: 1rem;
}

.space-y-1 > * + * {
  margin-top: .25rem;
}

@media (max-width: 640px) {
  .px-6 {
    padding-right: 18px;
    padding-left: 18px;
  }

  .p-8 {
    padding: 22px;
  }

  .navbar .max-w-4xl {
    gap: 14px;
  }

  .navbar img {
    width: 142px !important;
  }
}