:root {
  --bg:#07121d; --bg-soft:#0c1b29; --panel:#102235; --panel-2:#142b40; --text:#eef7f7; --muted:#9db2bd;
  --teal:#2bb9ae; --teal-bright:#78e2d8; --line:rgba(255,255,255,.09); --amber:#f3b95f; --blue:#72a9ff; --green:#6ad89a; --red:#ff8f8f;
  --shadow:0 18px 50px rgba(0,0,0,.28);
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 15% 5%,rgba(43,185,174,.14),transparent 30rem),radial-gradient(circle at 90% 0%,rgba(114,169,255,.08),transparent 28rem),var(--bg);color:var(--text);line-height:1.55} a{color:inherit;text-decoration:none} a:hover{color:var(--teal-bright)} .container{width:min(1180px,calc(100% - 36px));margin:0 auto}.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;color:#000;padding:9px 12px;z-index:100}.skip-link:focus{left:8px}
.site-header{position:sticky;top:0;z-index:30;backdrop-filter:blur(18px);background:rgba(8,19,30,.86);border-bottom:1px solid var(--line)}.nav{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.01em}.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--teal),#1e7f9b);display:grid;place-items:center;color:#041114;font-weight:900}.brand small{display:block;color:var(--muted);font-weight:600;font-size:.72rem;margin-top:-2px}.nav-links{display:flex;gap:18px;color:var(--muted);font-size:.93rem}.status-strip{border-bottom:1px solid var(--line);background:rgba(43,185,174,.06);color:#bdebe7;font-size:.84rem}.status-strip .container{padding:8px 0;display:flex;gap:10px;align-items:center}.dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 5px rgba(43,185,174,.12)}
.hero{padding:92px 0 62px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:38px;align-items:end}.hero-note{border:1px solid var(--line);background:linear-gradient(160deg,rgba(43,185,174,.10),rgba(13,28,42,.88));border-radius:20px;padding:22px;box-shadow:var(--shadow)}.hero-note .eyebrow{color:var(--teal-bright);font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;font-weight:900}.hero-note strong{display:block;font-size:1.15rem;line-height:1.3;margin:8px 0}.hero-note p{font-size:.91rem;margin:0}.kicker{color:var(--teal-bright);text-transform:uppercase;font-size:.78rem;letter-spacing:.16em;font-weight:800}h1{font-size:clamp(2.55rem,7vw,5.5rem);line-height:.98;letter-spacing:-.055em;margin:14px 0 24px;max-width:980px}.hero p{font-size:clamp(1.05rem,2vw,1.28rem);color:var(--muted);max-width:790px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 17px;border-radius:12px;border:1px solid var(--line);background:var(--panel);font-weight:750}.btn.primary{background:var(--teal);color:#031417;border-color:transparent}.btn.ghost{color:var(--text)}.btn.external::after{content:""}.proof-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:50px}.proof{border:1px solid var(--line);background:rgba(255,255,255,.025);border-radius:15px;padding:16px}.proof strong{display:block;font-size:1rem}.proof span{color:var(--muted);font-size:.82rem}
section{padding:58px 0}.role-section{padding-top:28px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:24px}h2{font-size:clamp(1.8rem,3vw,2.65rem);letter-spacing:-.035em;margin:0}.section-head p{max-width:620px;margin:0;color:var(--muted)}.role-links{display:flex;flex-wrap:wrap;gap:9px}.role-links a,.filter{border:1px solid var(--line);color:var(--muted);background:transparent;padding:10px 13px;border-radius:999px;font:inherit;font-size:.88rem;transition:.18s ease}.role-links a:hover,.role-links a.active,.filter.active,.filter:hover{color:#031417;background:var(--teal-bright);border-color:transparent}.filters{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 26px}.filter{cursor:pointer}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{position:relative;border:1px solid var(--line);background:linear-gradient(180deg,rgba(19,42,64,.9),rgba(13,28,42,.92));border-radius:19px;padding:22px;box-shadow:0 10px 34px rgba(0,0,0,.14);min-height:278px;display:flex;flex-direction:column;transition:.2s ease}.card:hover{transform:translateY(-3px);border-color:rgba(120,226,216,.30);box-shadow:0 18px 45px rgba(0,0,0,.22)}.card:focus-visible,.side-card:focus-visible,.btn:focus-visible,.filter:focus-visible,.role-links a:focus-visible{outline:3px solid var(--teal-bright);outline-offset:3px}.card h3{margin:12px 0 7px;font-size:1.28rem;letter-spacing:-.02em}.card p{color:var(--muted);margin:0 0 18px;font-size:.94rem}.card-footer{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:12px}.tags{display:flex;flex-wrap:wrap;gap:6px}.tag{font-size:.72rem;color:#b9ccd4;border:1px solid var(--line);border-radius:999px;padding:4px 7px}.status{display:inline-flex;align-items:center;gap:6px;width:max-content;max-width:100%;font-weight:800;font-size:.70rem;text-transform:uppercase;letter-spacing:.065em;line-height:1.3}.status.verified{color:var(--green)}.status.recheck{color:var(--amber)}.status.wip{color:var(--blue)}.feature-card{grid-column:span 2;min-height:326px;background:linear-gradient(150deg,rgba(43,185,174,.16),rgba(19,42,64,.88) 42%,rgba(13,28,42,.95))}.feature-card h3{font-size:1.7rem;max-width:500px}.feature-card p{max-width:670px}.arrow{font-weight:900;color:var(--teal-bright)}.arrow.small{display:inline-block;margin-top:14px;font-size:.84rem}.side-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.side-card{border:1px solid var(--line);background:rgba(255,255,255,.02);border-radius:16px;padding:18px;transition:.18s ease}.side-card:hover{transform:translateY(-2px);border-color:rgba(120,226,216,.26)}.side-card h3{margin:9px 0 7px;font-size:1.05rem}.side-card p{margin:0;color:var(--muted);font-size:.9rem}.practice{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}.practice-panel{border:1px solid var(--line);background:var(--bg-soft);border-radius:19px;padding:24px}.practice-panel ul{padding-left:20px;margin:15px 0 0;color:var(--muted)}.practice-panel li{margin-bottom:9px}.level{display:grid;grid-template-columns:120px 1fr;gap:12px;border-top:1px solid var(--line);padding:12px 0}.level:first-child{border-top:0}.level strong{color:var(--teal-bright)}.footer{border-top:1px solid var(--line);padding:34px 0 44px;color:var(--muted);font-size:.88rem}.footer-row{display:flex;align-items:center;justify-content:space-between;gap:20px}.hidden{display:none!important}
/* Case study */.case-hero{padding:74px 0 42px}.breadcrumb{color:var(--muted);font-size:.88rem}.case-title{font-size:clamp(2.4rem,6vw,4.8rem);margin:18px 0;letter-spacing:-.05em;line-height:1.02}.case-subtitle{color:var(--muted);max-width:900px;font-size:1.12rem}.case-status-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:22px}.evidence-date{color:var(--muted);font-size:.82rem}.meta-grid{margin-top:34px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.meta{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.025);padding:14px}.meta label{display:block;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.09em}.meta strong{display:block;margin-top:4px;font-size:.9rem;overflow-wrap:anywhere}.notice{border:1px solid rgba(243,185,95,.35);background:rgba(243,185,95,.07);color:#f4d8a6;border-radius:14px;padding:14px 16px;margin-top:18px;font-size:.9rem}.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.problem{border:1px solid var(--line);border-radius:18px;padding:22px;background:var(--panel);display:flex;flex-direction:column}.problem .num{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:rgba(43,185,174,.14);color:var(--teal-bright);font-weight:900}.problem h3{margin:15px 0 8px;font-size:1.22rem}.problem p{color:var(--muted);font-size:.92rem}.evidence-note{margin-top:auto;border-top:1px solid var(--line);padding-top:13px;color:#bfd1d8;font-size:.82rem}.evidence-note strong{color:var(--teal-bright)}.flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:22px}.flow span{border:1px solid var(--line);background:var(--panel);padding:10px 11px;border-radius:11px;font-size:.82rem}.flow b{color:var(--teal-bright)}.table-wrap{overflow-x:auto;border-radius:14px}.evidence-table{width:100%;border-collapse:collapse;margin-top:18px;min-width:680px}.evidence-table th,.evidence-table td{border-bottom:1px solid var(--line);text-align:left;padding:13px 12px;vertical-align:top}.evidence-table th{color:var(--teal-bright);font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;background:rgba(43,185,174,.06)}.evidence-table td{color:var(--muted);font-size:.88rem}.evidence-table code{color:#d8f6f3;font-size:.8rem;overflow-wrap:anywhere}.callout{border-left:3px solid var(--teal);padding:8px 0 8px 17px;color:var(--muted);max-width:900px}.limits{display:grid;grid-template-columns:1fr 1fr;gap:14px}.limits.compact{grid-template-columns:repeat(3,1fr)}.limit-card{border:1px solid var(--line);border-radius:16px;padding:18px;background:rgba(255,255,255,.02)}.limit-card h3{font-size:1rem;margin:0 0 7px}.limit-card p{color:var(--muted);margin:0;font-size:.9rem}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.grid,.problem-grid{grid-template-columns:1fr 1fr}.feature-card{grid-column:span 2}.proof-bar,.meta-grid{grid-template-columns:1fr 1fr}.practice{grid-template-columns:1fr}.side-grid,.limits.compact{grid-template-columns:1fr}.nav-links{display:none}}@media(max-width:620px){.hero{padding-top:66px}.grid,.problem-grid,.limits{grid-template-columns:1fr}.feature-card{grid-column:auto}.proof-bar,.meta-grid{grid-template-columns:1fr}.section-head,.footer-row{align-items:flex-start;flex-direction:column}.level{grid-template-columns:1fr}.status{width:auto}.case-title{overflow-wrap:anywhere}}