:root {
  --ink: #101b28;
  --navy: #12212f;
  --paper: #f6f4ef;
  --cream: #ebe8df;
  --teal: #45d7b9;
  --teal-d: #15977e;
  --line: rgba(16, 27, 40, .14);
  --muted: #66727e;
  --mono: "DM Mono", monospace;
  --sans: "Manrope", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); line-height: 1.6; }
a { color: inherit; }
.section-wrap { width: min(1100px, calc(100% - 48px)); margin: auto; }
.announcement { padding: 9px 24px; background: #d9f7ef; color: #183c3d; text-align: center; font: 500 11px/20px var(--mono); }
.site-header { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.brand { display: grid; grid-template-columns: 41px max-content; grid-template-rows: auto auto; column-gap: 12px; row-gap: 6px; text-decoration: none; }
.brand-mark { grid-area: 1 / 1; align-self: center; display: grid; place-items: center; width: 41px; height: 41px; background: var(--ink); color: var(--teal); font: 500 22px/1 Georgia, serif; }
.robottrader { grid-area: 1 / 2; color: var(--teal-d); font: 700 41px/1 Georgia, serif; letter-spacing: 0; }
.brand-subtitle { grid-area: 2 / 2; font-size: 14px; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; }
.page-nav { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; font-size: 12px; font-weight: 700; }
.page-nav a { color: #53636d; text-decoration: none; }
.page-nav a:hover { color: var(--teal-d); }
.eyebrow { margin: 0 0 16px; color: #63717d; font: 500 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 24px; height: 1px; margin-right: 9px; vertical-align: 4px; background: var(--teal-d); }
.detail-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .82fr); gap: 70px; padding: 76px 0 70px; align-items: center; }
.detail-hero h1, .content-title { max-width: 680px; margin: 0; font-size: clamp(42px, 6vw, 72px); letter-spacing: -.075em; line-height: 1.02; }
.detail-hero h1 em, .content-title em { font-family: Georgia, serif; font-weight: 400; }
.detail-lead { max-width: 620px; margin: 24px 0 0; color: #536170; font-size: 17px; }
.status { display: inline-flex; gap: 8px; align-items: center; margin-top: 24px; padding: 8px 10px; border: 1px solid #a7cfc5; color: #285b52; font: 500 10px/1.3 var(--mono); letter-spacing: .03em; text-decoration: none; }
.status--sheet { gap: 10px; min-height: 42px; padding: 12px 16px; font-size: 11px; }
.status::before { width: 7px; height: 7px; border-radius: 50%; background: var(--teal-d); content: ""; }
.detail-visual { min-height: 310px; background: var(--navy); box-shadow: 20px 20px 0 #e5e2d9; overflow: hidden; }
.detail-visual img { width: 100%; height: 100%; min-height: 310px; display: block; object-fit: cover; }
.video-evidence { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; padding: 0 0 80px; align-items: center; }
.video-evidence h2 { margin: 0; font-size: 42px; letter-spacing: -.07em; line-height: 1.08; }
.video-evidence h2 em { font-family: Georgia, serif; font-weight: 400; }
.video-evidence p:not(.eyebrow) { color: #536170; font-size: 14px; line-height: 1.7; }
.video-frame { aspect-ratio: 16 / 9; overflow: hidden; background: var(--navy); box-shadow: 16px 16px 0 #e5e2d9; }
.video-frame iframe { width: 100%; height: 100%; display: block; border: 0; }
.detail-visual--abstract { display: grid; padding: 28px; position: relative; color: white; }
.detail-visual--abstract::before { position: absolute; inset: 38% -10% 14% -16%; border-top: 2px solid var(--teal); border-radius: 50%; transform: rotate(-11deg); content: ""; }
.detail-visual--abstract::after { width: 11px; height: 11px; align-self: end; justify-self: center; border: 2px solid var(--teal); border-radius: 50%; content: ""; }
.detail-visual--abstract b { font: 500 12px var(--mono); color: #b7ceca; letter-spacing: .08em; }
.details { padding: 94px 0; border-top: 1px solid var(--line); }
.details-grid { display: grid; grid-template-columns: .77fr 1.23fr; gap: 82px; align-items: start; }
.details h2 { margin: 0; font-size: 38px; letter-spacing: -.065em; line-height: 1.06; }
.details-intro { margin: 21px 0 0; color: var(--muted); font-size: 14px; }
.specs { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.specs div { min-height: 93px; padding: 18px 18px 15px 0; border-bottom: 1px solid var(--line); }
.specs div:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 22px; }
.specs div:nth-child(even) { padding-left: 22px; }
.specs dt { color: #6c7a82; font: 500 10px var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.specs dd { margin: 6px 0 0; font-size: 14px; font-weight: 700; }
.to-complete { color: #63717d; font-weight: 500; }
.evidence { padding: 88px 0; background: var(--navy); color: white; }
.evidence-grid { display: grid; grid-template-columns: .84fr 1.16fr; gap: 80px; }
.evidence h2 { margin: 0; font-size: 42px; letter-spacing: -.07em; line-height: 1.08; }
.evidence p { color: #b3c3c8; font-size: 14px; }
.proof-list { border-top: 1px solid rgba(212,226,226,.18); }
.proof-list div { display: grid; grid-template-columns: 1fr minmax(155px, .85fr); gap: 20px; padding: 18px 0; border-bottom: 1px solid rgba(212,226,226,.18); }
.proof-list span { color: #aac1c5; font-size: 13px; }
.proof-list b { color: #f0f8f5; font: 500 11px/1.55 var(--mono); text-align: right; }
.access { padding: 95px 0; }
.access-box { display: grid; grid-template-columns: 1fr auto; gap: 55px; align-items: center; padding: 46px 52px; background: #dceee7; }
.access h2 { margin: 0; font-size: 38px; letter-spacing: -.065em; line-height: 1.08; }
.access p { max-width: 650px; margin: 15px 0 0; color: #4e6066; font-size: 13px; }
.button { display: inline-flex; align-items: center; gap: 12px; padding: 14px 18px; background: var(--ink); color: white; font-size: 12px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.button:hover { background: #254055; }
.confidential { max-width: 1100px; margin: 0 auto 92px; padding: 20px 22px; border-left: 2px solid var(--teal-d); background: rgba(69,215,185,.07); color: #536170; font-size: 13px; }
.risk { border-top: 1px solid var(--line); padding: 18px 0; color: #71818a; font-size: 10px; }
.legal-page { padding: 72px 0 100px; }
.legal-page .content-title { margin-bottom: 25px; }
.legal-page .intro { max-width: 760px; margin: 0 0 42px; color: var(--muted); }
.legal-card { max-width: 850px; padding: 28px 30px; margin-bottom: 18px; background: white; border: 1px solid var(--line); }
.legal-card h2 { margin: 0 0 13px; font-size: 21px; letter-spacing: -.04em; }
.legal-card p, .legal-card li { color: #566570; font-size: 13px; }
.legal-card p { margin: 0; }
.legal-card ul { margin: 0; padding-left: 18px; }
.legal-card li + li { margin-top: 6px; }
.notice { padding: 14px 16px; margin: 0 0 36px; border-left: 2px solid var(--teal-d); background: #e6f4ef; color: #365e55; font-size: 13px; }
footer { background: #0d1924; color: #f3f8f6; }
.footer-main { padding: 34px 0; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-main p { margin: 0; color: #a4b5b9; font-size: 11px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; font: 10px var(--mono); }
.footer-links a { color: #b6cbca; text-decoration: none; }
.footer-risk { padding: 13px 0 19px; border-top: 1px solid #31404a; color: #82979c; font-size: 9px; }

@media (max-width: 780px) {
  .site-header { min-height: 80px; }
  .page-nav { display: none; }
  .detail-hero, .video-evidence, .details-grid, .evidence-grid { grid-template-columns: 1fr; gap: 38px; }
  .detail-hero { padding: 55px 0; }
  .detail-visual { min-height: 240px; }
  .detail-visual img { min-height: 240px; }
  .video-evidence { padding-bottom: 60px; }
  .details, .evidence, .access { padding: 65px 0; }
  .access-box { grid-template-columns: 1fr; padding: 34px 28px; gap: 27px; }
}

@media (max-width: 480px) {
  .section-wrap { width: calc(100% - 32px); }
  .announcement { padding: 8px 14px; font-size: 9px; }
  .brand { grid-template-columns: 34px max-content; column-gap: 9px; row-gap: 5px; }
  .brand-mark { width: 34px; height: 34px; font-size: 19px; }
  .robottrader { font-size: 34px; }
  .brand-subtitle { font-size: 12px; }
  .detail-hero h1, .content-title { font-size: 43px; }
  .detail-lead { font-size: 15px; }
  .details h2, .evidence h2, .access h2 { font-size: 34px; }
  .specs { grid-template-columns: 1fr; }
  .specs div:nth-child(odd) { border-right: 0; padding-right: 0; }
  .specs div:nth-child(even) { padding-left: 0; }
  .proof-list div { grid-template-columns: 1fr; gap: 6px; }
  .proof-list b { text-align: left; }
  .footer-main { display: block; }
  .footer-main p { margin: 18px 0; }
}

/* NAS V4 uses a 16:9 visual with text at its edges; keep its full frame visible. */
.detail-visual--native-ratio { min-height: 0; aspect-ratio: 16 / 9; }
.detail-visual--native-ratio img { min-height: 0; object-fit: contain; }