:root {
    color-scheme: dark;
    --ink: #191b1f;
    --surface: #202329;
    --surface-2: #292d34;
    --line: rgba(255, 255, 255, 0.14);
    --line-strong: rgba(255, 255, 255, 0.26);
    --text: #f3f4f2;
    --muted: #a0a5a4;
    --accent: #d129a1;
    --font: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--text); font-family: var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; }

.info-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    min-height: 72px;
    border-bottom: 1px solid var(--line);
    background: rgba(25, 27, 31, 0.94);
    backdrop-filter: blur(16px);
}

.info-brand { position: relative; display: block; width: 86px; height: 64px; margin-left: 16px; overflow: hidden; }
.info-brand img { position: absolute; left: -2px; top: -13px; width: 88px; height: 88px; max-width: none; }
.info-header > span { color: var(--muted); font: 9px/1 var(--mono); letter-spacing: .14em; }
.open-tool { justify-self: end; display: grid; place-items: center; min-height: 72px; padding: 0 25px; background: var(--accent); color: #160812; text-decoration: none; font: 750 11px/1 var(--font); letter-spacing: .1em; }
.open-tool:hover { background: #e25fba; }

main { width: min(1280px, calc(100% - 40px)); margin: 0 auto; }
.hero { padding: clamp(70px, 11vw, 155px) 0 clamp(60px, 9vw, 120px); border-bottom: 1px solid var(--line); }
.eyebrow, .section-number { color: var(--accent); font: 10px/1.35 var(--mono); letter-spacing: .13em; }
h1 { max-width: 980px; margin: 23px 0 0; font-size: clamp(50px, 8.2vw, 124px); font-weight: 680; line-height: .9; letter-spacing: -.055em; }
.hero-copy { margin: 42px 0 0; font-size: clamp(20px, 2.3vw, 34px); line-height: 1.2; }
.hero-note { max-width: 710px; margin: 20px 0 0; color: #c8ccca; font-size: clamp(15px, 1.3vw, 18px); line-height: 1.65; }

.content-grid { display: grid; grid-template-columns: minmax(250px, .72fr) minmax(0, 1.8fr); gap: clamp(50px, 8vw, 130px); align-items: start; }
.fact-card { position: sticky; top: 105px; margin-top: 80px; padding: 25px; border: 1px solid var(--line); background: var(--surface); }
.fact-card dl { margin: 24px 0 0; }
.fact-card dl > div { padding: 15px 0; border-top: 1px solid var(--line); }
.fact-card dt { color: var(--muted); font: 9px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.fact-card dd { margin: 8px 0 0; font-size: 14px; line-height: 1.45; }
.fact-card a { color: var(--accent); text-decoration: none; overflow-wrap: anywhere; }

.article > section { padding: clamp(70px, 9vw, 118px) 0; border-bottom: 1px solid var(--line); }
.article h2 { max-width: 800px; margin: 17px 0 31px; font-size: clamp(32px, 4.3vw, 68px); line-height: .98; letter-spacing: -.035em; }
.article p, .article li { color: #d2d5d3; font-size: clamp(15px, 1.35vw, 18px); line-height: 1.72; }
.article p { max-width: 760px; margin: 0 0 20px; }
.article strong { color: var(--text); }
.article a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 4px; }

.feature-list, .question-list { margin: 34px 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.feature-list li, .question-list li { position: relative; padding: 17px 12px 17px 32px; border-bottom: 1px solid var(--line); }
.feature-list li::before, .question-list li::before { content: ""; position: absolute; left: 5px; top: 27px; width: 7px; height: 7px; background: var(--accent); }

.capability-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 40px; background: var(--line); border: 1px solid var(--line); }
.capability-grid > div { min-height: 175px; padding: 25px; background: var(--surface); }
.capability-grid span { color: var(--accent); font: 10px/1 var(--mono); letter-spacing: .13em; }
.capability-grid p { margin: 20px 0 0; font-size: 14px; line-height: 1.55; }
.limitation { margin-top: 35px !important; padding: 18px 20px; border-left: 3px solid var(--accent); background: var(--surface); }
.ai-summary { margin-bottom: 90px; padding-inline: clamp(24px, 4vw, 58px) !important; background: var(--surface); border: 1px solid var(--line-strong) !important; }
.ai-summary ul { padding-left: 21px; }
.updated { margin-top: 38px !important; color: var(--accent) !important; font: 10px/1.3 var(--mono) !important; letter-spacing: .13em; }

footer { display: flex; justify-content: space-between; gap: 20px; padding: 30px max(20px, calc((100vw - 1280px) / 2)); border-top: 1px solid var(--line); color: var(--muted); font: 9px/1.4 var(--mono); letter-spacing: .12em; }
footer a { color: var(--accent); text-decoration: none; }

@media (max-width: 850px) {
    .info-header { grid-template-columns: 1fr auto; }
    .info-header > span { display: none; }
    .content-grid { grid-template-columns: 1fr; gap: 0; }
    .fact-card { position: static; margin: 45px 0 0; }
    .capability-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    main { width: min(100% - 28px, 1280px); }
    .info-header { min-height: 62px; }
    .info-brand { height: 58px; margin-left: 9px; }
    .open-tool { min-height: 62px; padding: 0 15px; font-size: 9px; }
    .hero { padding-top: 70px; }
    h1 { font-size: clamp(45px, 16vw, 70px); }
    .article > section { padding: 64px 0; }
    .ai-summary { padding-inline: 18px !important; }
    footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}