:root { --ink:#1f1f27; --ink-2:#565a6b; --indigo:#4f5bf5; --line:#e4e6f3; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: linear-gradient(180deg, #ece7f6 0, #f6f5fc 380px, #fbfaff 100%) no-repeat; font: 17px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--indigo); text-underline-offset: 3px; }
.top { display: flex; align-items: center; justify-content: space-between; max-width: 860px; margin: 0 auto; padding: 22px 20px; }
.brand { display: inline-flex; align-items: center; text-decoration: none; color: var(--ink); font-size: 28px; margin-left: -.42em; }
.logo { position: relative; display: inline-block; padding: .26em .42em .28em; line-height: 1; font-weight: 850; letter-spacing: -0.05em; --c: var(--indigo); --t: .125em; }
.logo b { font-weight: 850; color: var(--indigo); }
.logo i { position: absolute; width: .5em; height: .5em; border: var(--t) solid var(--c); }
.logo i:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; border-top-left-radius: .26em; }
.logo i:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; border-top-right-radius: .26em; }
.logo i:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; border-bottom-left-radius: .26em; }
.logo i:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; border-bottom-right-radius: .26em; }
.logo::after { content: ""; position: absolute; left: .34em; right: .34em; top: .2em; height: .06em; min-height: 2px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--indigo), transparent); box-shadow: 0 0 10px rgba(79,91,245,.85); opacity: 0; animation: scanline 4.2s ease-in-out infinite; }
@keyframes scanline { 0%, 12% { top: .2em; opacity: 0; } 22% { opacity: .95; } 62% { top: calc(100% - .22em); opacity: .95; } 72%, 100% { top: calc(100% - .22em); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .logo::after { animation: none; } }
.lang { display: inline-flex; padding: 4px; border-radius: 999px; background: rgba(255,255,255,.7); box-shadow: 0 0 0 1px var(--line); }
.lang button { font: inherit; font-weight: 700; font-size: 14px; border: 0; background: transparent; color: var(--ink-2); padding: 7px 13px; border-radius: 999px; cursor: pointer; min-height: 36px; }
.lang button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.lang button:focus-visible, a:focus-visible { outline: 3px solid var(--indigo); outline-offset: 3px; }
main { max-width: 860px; margin: 0 auto; padding: 18px 20px 72px; }
.doc[hidden] { display: none; }
h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.04; letter-spacing: -0.035em; margin: 18px 0 8px; }
.meta { color: var(--ink-2); font-size: 15px; margin: 0 0 26px; }
h2 { font-size: 24px; letter-spacing: -0.02em; margin: 38px 0 10px; line-height: 1.2; }
h3 { font-size: 18px; margin: 22px 0 6px; }
p, li { margin: 0 0 12px; }
ul { padding-left: 1.2em; margin: 0 0 14px; }
.summary { background: #fff; border-radius: 22px; padding: 22px 24px 12px; box-shadow: 0 24px 40px -30px rgba(66,57,140,.5), 0 0 0 1px var(--line); }
.summary h2 { margin-top: 0; font-size: 20px; }
.callout { background: #eef0ff; border-left: 4px solid var(--indigo); border-radius: 14px; padding: 16px 20px 6px; margin: 18px 0; }
table { width: 100%; border-collapse: collapse; margin: 10px 0 18px; font-size: 15.5px; background: #fff; border-radius: 14px; overflow: hidden; box-shadow: 0 0 0 1px var(--line); }
th, td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--line); }
th { background: #f1f2fb; font-weight: 700; }
tr:last-child td { border-bottom: 0; }
footer { max-width: 860px; margin: 0 auto; padding: 8px 20px 48px; color: var(--ink-2); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer a { font-weight: 600; text-decoration: none; } footer a:hover { text-decoration: underline; }
@media (max-width: 560px) { table, thead, tbody, th, td, tr { display: block; } thead { display: none; } td { border: 0; padding: 4px 14px; } tr { padding: 10px 0; border-bottom: 1px solid var(--line); } td:first-child { font-weight: 700; } }
@media print { .lang, footer { display: none; } body { background: #fff; } }