/* SENTINEL CASE STUDY v4 — light, clean editorial layout. White canvas, black
   type, soft rounded cards, lime reserved for CTA fills (black-on-lime),
   readable green for accent text. Code blocks stay dark on purpose. */
:root{--accent:#CCFF00;--accent-ink:#4d7c0f;--bg:#ffffff;--band:#f7f8f6;--surface:#ffffff;--card:#ffffff;--text:#101410;--dim:#5f6660;--muted:#8a908a;--border:rgba(10,20,10,0.09);--radius:16px;--shadow-sm:0 1px 2px rgba(16,20,16,0.05);--shadow-md:0 10px 30px rgba(16,20,16,0.08);}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;background:#fff;color-scheme:light;}
body{font-family:'Space Grotesk',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column;}
.skip-link{position:absolute;left:-9999px;top:0;z-index:1000;padding:8px 16px;background:var(--accent);color:#000;font-family:'DM Mono',monospace;font-size:0.7rem;text-decoration:none;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}

/* NAV — floating rounded pill */
nav{position:sticky;top:14px;z-index:100;max-width:1120px;margin:14px auto 0;padding:0 16px;background:none;border:none;}
.nav-inner{background:rgba(255,255,255,0.97);border:1px solid var(--border);border-radius:999px;box-shadow:0 8px 30px rgba(16,20,16,0.07);max-width:none;margin:0;padding:0 12px 0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:var(--text);text-decoration:none;letter-spacing:-0.02em;}
.nav-logo .logo-mark{width:30px;height:30px;background:var(--accent);border-radius:9px;display:flex;align-items:center;justify-content:center;}
.nav-logo .logo-mark svg{color:#000;}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;}
.nav-links li{display:flex;align-items:center;}
.nav-links li+li::before{content:none;}
.nav-links a{font-size:0.88rem;font-weight:500;color:var(--dim);text-decoration:none;letter-spacing:0;text-transform:none;transition:color 0.2s,background 0.2s;padding:8px 14px;border-radius:999px;}
.nav-links a:hover{color:var(--text);background:rgba(16,20,16,0.05);}
.nav-actions{display:flex;align-items:center;gap:8px;}
.nav-login{font-size:0.88rem;font-weight:500;color:var(--dim);text-decoration:none;letter-spacing:0;text-transform:none;transition:color 0.2s;padding:8px 14px;}
.nav-login:hover{color:var(--text);}
.btn-bracket{font-size:0.85rem;font-weight:600;color:#000;text-decoration:none;letter-spacing:0;text-transform:none;background:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:10px 20px;transition:color 0.2s,background 0.2s,border-color 0.2s,box-shadow 0.2s,transform 0.2s;display:inline-flex;align-items:center;gap:6px;}
.btn-bracket:hover{background:#bff000;border-color:#bff000;transform:translateY(-1px);box-shadow:0 6px 20px rgba(160,200,0,0.35);}
.btn-bracket-accent{background:var(--accent);border-color:var(--accent);color:#000;font-weight:700;}
.btn-bracket-accent:hover{background:#bff000;border-color:#bff000;}
#mobile-menu-btn{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:4px;}
#mobile-menu{display:none;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-md);padding:16px 24px 24px;position:sticky;top:84px;z-index:99;max-width:1120px;margin:8px auto 0;}
#mobile-menu a{display:block;padding:12px 0;font-size:0.95rem;font-weight:500;color:var(--dim);text-decoration:none;border-bottom:1px solid var(--border);letter-spacing:0;text-transform:none;}
#mobile-menu a:hover{color:var(--text);}
#mobile-menu .mob-actions{display:flex;gap:12px;margin-top:16px;}
@media(max-width:1023px){.nav-links,.nav-actions{display:none;}#mobile-menu-btn{display:block;}}

/* PAGE */
main{flex:1;}
.page-wrap{max-width:1200px;margin:0 auto;padding:0 32px;}

/* BREADCRUMB */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.78rem;color:var(--muted);padding:32px 0 20px;}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color 0.2s;}
.breadcrumb a:hover{color:var(--text);}
.breadcrumb span.sep{color:var(--border);}

/* BACK LINK */
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:0.82rem;font-weight:500;color:var(--dim);text-decoration:none;transition:color 0.2s;margin-bottom:24px;}
.back-link:hover{color:var(--text);}
.back-link::before{content:'←';margin-right:2px;}

/* TAG */
.cs-tag{display:inline-flex;align-items:center;gap:6px;font-size:0.72rem;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;color:var(--accent-ink);background:rgba(77,124,15,0.07);border:1px solid rgba(77,124,15,0.18);border-radius:999px;padding:5px 13px;margin-bottom:18px;}

/* ANONYMIZATION NOTE */
.illu-box{display:inline-block;background:var(--band);border:1px solid var(--border);border-radius:10px;padding:8px 14px;margin:0 0 22px;font-size:0.74rem;line-height:1.5;color:var(--muted);}
.illu-box strong{color:var(--dim);letter-spacing:0.02em;}
.illu-box a{color:var(--accent-ink);}

/* HERO */
.cs-hero{position:relative;overflow:visible;padding:32px 0 0;background:var(--bg);border-bottom:1px solid var(--border);}
.cs-hero::before,.cs-hero::after{content:none;}
.cs-hero-inner{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:0 32px;}

@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.cs-tag{animation:fadeUp 0.45s ease both;}
.hero-h1{font-size:clamp(2rem,4.5vw,3.4rem);font-weight:700;letter-spacing:-0.04em;line-height:1.06;margin-bottom:20px;max-width:820px;color:var(--text);animation:fadeUp 0.5s 0.1s ease both;}
.hero-sub{font-size:1.05rem;color:var(--dim);line-height:1.75;max-width:640px;margin-bottom:0;animation:fadeUp 0.5s 0.2s ease both;}

/* HERO STATS ROW */
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px;padding-bottom:48px;}
.hero-stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px 28px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow 0.25s,transform 0.25s;}
.hero-stat::before{content:'';position:absolute;top:0;left:24px;width:44px;height:3px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 0.7s ease;}
.hero-stat.revealed::before{transform:scaleX(1);}
.hero-stat:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.hero-stat-val{font-family:'DM Mono',monospace;font-size:clamp(1.55rem,2.4vw,2.2rem);font-weight:500;color:var(--text);letter-spacing:-0.02em;line-height:1;margin-bottom:10px;}
.hero-stat-label{font-size:0.8rem;color:var(--dim);line-height:1.5;}

/* SIGNALS BAR */
.signals-bar{background:var(--band);border-bottom:1px solid var(--border);padding:14px 0;}
.signals-inner{max-width:1200px;margin:0 auto;padding:0 32px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.signals-head{font-size:0.68rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--muted);white-space:nowrap;}
.signals-list{display:flex;gap:8px;flex-wrap:wrap;}
.signal-pill{display:inline-flex;align-items:center;gap:6px;font-size:0.7rem;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;padding:5px 13px;border:1px solid;border-radius:999px;background:#fff;}
.signal-dot{width:5px;height:5px;flex-shrink:0;background:currentColor;animation:sdot 1.5s ease-in-out infinite;border-radius:50%;}
@keyframes sdot{0%,100%{opacity:1}50%{opacity:0.2}}
.sp-antidetect{color:#65760a;border-color:rgba(101,118,10,0.3);}
.sp-proxy{color:#c2620a;border-color:rgba(194,98,10,0.3);}
.sp-vpn{color:#0a6ac2;border-color:rgba(10,106,194,0.3);}
.sp-bot{color:#d2372e;border-color:rgba(210,55,46,0.3);}
.sp-headless{color:#8a3fd2;border-color:rgba(138,63,210,0.3);}
.sp-asn{color:#b58a00;border-color:rgba(181,138,0,0.3);}

/* LAYOUT */
.cs-layout{display:grid;grid-template-columns:1fr 340px;gap:60px;padding-top:56px;padding-bottom:80px;align-items:start;}

/* ARTICLE */
.cs-article h2{font-size:1.35rem;font-weight:700;letter-spacing:-0.02em;color:var(--text);margin:44px 0 14px;}
.cs-article h2:first-child{margin-top:0;}
.cs-article p{font-size:0.98rem;color:var(--dim);line-height:1.85;margin-bottom:16px;}
.cs-article ul{list-style:none;padding:0;margin-bottom:20px;display:flex;flex-direction:column;gap:10px;}
.cs-article ul li{font-size:0.95rem;color:var(--dim);line-height:1.65;padding-left:26px;position:relative;}
.cs-article ul li::before{content:'✓';position:absolute;left:0;top:1px;width:17px;height:17px;border-radius:50%;background:rgba(77,124,15,0.1);color:var(--accent-ink);font-size:0.62rem;font-weight:700;display:flex;align-items:center;justify-content:center;}
.cs-article code{font-family:'DM Mono',monospace;font-size:0.85em;background:var(--band);border:1px solid var(--border);border-radius:6px;padding:2px 6px;color:var(--accent-ink);}
.cs-article strong{color:var(--text);}

/* INFO BOXES */
.alert-box{background:#fef2f2;border:1px solid rgba(210,55,46,0.18);border-radius:12px;padding:20px 24px;margin:24px 0;}
.alert-box p{font-size:0.9rem;color:#7a3a36;line-height:1.7;margin:0;}
.alert-box strong{color:#d2372e;}
.warning-box{background:#fff8ed;border:1px solid rgba(217,119,6,0.2);border-radius:12px;padding:20px 24px;margin:24px 0;}
.warning-box p{font-size:0.9rem;color:#7a5a2e;line-height:1.7;margin:0;}
.warning-box strong{color:#b45309;}
.highlight-box{background:#f7fbe8;border:1px solid rgba(101,118,10,0.2);border-radius:12px;padding:20px 24px;margin:24px 0;}
.highlight-box p{font-size:0.9rem;color:#4a5518;line-height:1.7;margin:0;}

/* QUOTE */
.cs-quote{position:relative;background:var(--band);border:1px solid var(--border);border-radius:var(--radius);padding:36px 40px 32px 76px;margin:36px 0;overflow:hidden;}
.cs-quote::before{content:'\201C';position:absolute;left:22px;top:12px;font-size:5rem;line-height:1;color:var(--accent-ink);font-family:Georgia,'Times New Roman',serif;opacity:0.3;pointer-events:none;}
.cs-quote::after{content:none;}
.cs-quote p{font-size:1.05rem !important;color:var(--text) !important;line-height:1.7 !important;font-style:italic;margin-bottom:14px !important;}
.cs-quote cite{font-size:0.8rem;color:var(--muted);font-style:normal;}

/* RESULTS */
.results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0;}
.results-grid-2c{grid-template-columns:repeat(2,1fr) !important;}
.result-cell{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px 20px;box-shadow:var(--shadow-sm);transition:box-shadow 0.25s,transform 0.25s;}
.result-cell:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.result-num{font-family:'DM Mono',monospace;font-size:1.5rem;font-weight:500;color:var(--text);letter-spacing:-0.02em;margin-bottom:6px;line-height:1;}
.result-desc{font-size:0.8rem;color:var(--dim);line-height:1.5;}

/* CODE BLOCK — intentionally dark: it's a terminal artifact */
.cs-code{background:#101410;border:1px solid rgba(16,20,16,0.9);border-radius:14px;padding:24px 28px;margin:28px 0;font-family:'DM Mono',monospace;font-size:0.8rem;line-height:1.75;overflow-x:auto;white-space:pre;display:block;color:#e6e8e3;box-shadow:var(--shadow-md);}
.cs-code .cm{color:#6b7264;}
.cs-code .kw{color:#7ab8ff;}
.cs-code .fn{color:#CCFF00;}
.cs-code .str{color:#ffb066;}

/* SIDEBAR */
.cs-sidebar{position:sticky;top:96px;}
.sidebar-cta{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-md);}
.sidebar-cta h3{font-size:1.05rem;font-weight:700;letter-spacing:-0.01em;margin-bottom:10px;color:var(--text);}
.sidebar-cta p{font-size:0.85rem;color:var(--dim);line-height:1.65;margin-bottom:20px;}
.btn-accent{display:block;text-align:center;background:var(--accent);color:#000;font-size:0.85rem;font-weight:700;letter-spacing:0;text-transform:none;padding:13px 16px;text-decoration:none;border-radius:999px;transition:background 0.2s,transform 0.18s,box-shadow 0.18s;margin-bottom:10px;}
.btn-accent:hover{background:#bff000;transform:translateY(-1px);box-shadow:0 6px 20px rgba(160,200,0,0.35);}
.btn-ghost{display:block;text-align:center;color:var(--dim);font-size:0.85rem;font-weight:500;letter-spacing:0;text-transform:none;padding:11px 16px;text-decoration:none;border:1px solid var(--border);border-radius:999px;transition:color 0.2s,background 0.2s,border-color 0.2s,box-shadow 0.2s,transform 0.2s;}
.btn-ghost:hover{color:var(--text);border-color:rgba(16,20,16,0.25);}
.timeline-badge{background:var(--band);border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin-top:16px;}
.timeline-badge span{display:block;font-size:0.68rem;color:var(--accent-ink);letter-spacing:0.06em;text-transform:uppercase;margin-bottom:4px;font-weight:700;}
.timeline-badge strong{font-family:'DM Mono',monospace;font-size:0.88rem;color:var(--text);}

/* CTA STRIP — rounded lime band */
.cta-strip{background:var(--accent);border-radius:24px;max-width:1200px;margin:0 auto 80px;padding:64px 32px;text-align:center;}
.cta-strip h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700;color:#000;letter-spacing:-0.03em;margin-bottom:10px;}
.cta-strip p{font-size:0.95rem;color:rgba(0,0,0,0.65);margin-bottom:32px;}
.btn-dark{display:inline-flex;align-items:center;gap:6px;background:#101410;color:#fff;font-size:0.88rem;font-weight:600;letter-spacing:0;text-transform:none;padding:14px 30px;text-decoration:none;border:1px solid #101410;border-radius:999px;transition:color 0.2s,background 0.2s,border-color 0.2s,box-shadow 0.2s,transform 0.2s;}
.btn-dark:hover{background:#232823;transform:translateY(-1px);box-shadow:0 8px 24px rgba(0,0,0,0.2);}

/* RELATED */
.related-section{background:var(--band);border-top:1px solid var(--border);padding:64px 32px 72px;}
.related-inner{max-width:1200px;margin:0 auto;}
.section-label{font-size:0.72rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:28px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.related-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 28px;text-decoration:none;color:inherit;transition:transform 0.25s cubic-bezier(.22,1,.36,1),box-shadow 0.25s;position:relative;overflow:hidden;box-shadow:var(--shadow-sm);}
.related-card::before{content:'';position:absolute;top:0;left:28px;width:44px;height:3px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 0.3s;}
.related-card:hover::before{transform:scaleX(1);}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.related-tag{font-size:0.68rem;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:12px;}
.related-metric{font-family:'DM Mono',monospace;font-size:2rem;color:var(--text);margin-bottom:8px;letter-spacing:-0.02em;line-height:1;}
.related-title{font-size:0.92rem;font-weight:600;color:var(--text);margin-bottom:12px;line-height:1.45;}
.related-link{font-size:0.8rem;color:var(--muted);display:flex;align-items:center;gap:4px;transition:color 0.2s;}
.related-card:hover .related-link{color:var(--accent-ink);}

/* FOOTER */
footer{background:#fff;border-top:1px solid var(--border);padding:60px 32px 40px;}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:280px 1fr;gap:80px;align-items:start;padding-bottom:56px;border-bottom:1px solid var(--border);}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:1.05rem;font-weight:700;color:var(--text);text-decoration:none;margin-bottom:14px;}
.footer-logo .logo-mark{width:24px;height:24px;background:var(--accent);border-radius:7px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.footer-logo .logo-mark svg{color:#000;}
.footer-tagline{font-size:0.85rem;color:var(--muted);max-width:240px;line-height:1.6;}
.footer-links{display:flex;gap:40px;}
.footer-col{display:flex;flex-direction:column;gap:0;}
.footer-col-head{font-size:0.7rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--text);margin-bottom:16px;}
.footer-col a{font-size:0.82rem;font-weight:400;color:var(--muted);text-decoration:none;transition:color 0.18s;padding:4px 0;}
.footer-col a:hover{color:var(--text);}
.footer-bottom{max-width:1200px;margin:32px auto 0;display:flex;align-items:center;justify-content:space-between;font-size:0.74rem;color:var(--muted);}
.footer-bottom a{color:var(--muted);text-decoration:none;transition:color 0.18s;}
.footer-bottom a:hover{color:var(--text);}

/* RESPONSIVE */
@media(max-width:1024px){
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .cs-layout{grid-template-columns:1fr;}
  .cs-sidebar{position:static;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr;gap:40px;}
  .footer-links{flex-wrap:wrap;gap:28px;}
}
@media(max-width:640px){
  nav{top:8px;margin-top:8px;padding:0 10px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .results-grid{grid-template-columns:repeat(2,1fr) !important;}
  .page-wrap{padding:0 20px;}
  .cs-quote{padding:32px 24px 28px 52px;}
  .cs-quote::before{font-size:4rem;left:14px;top:10px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center;}
  .cta-strip{margin:0 16px 64px;}
}
@media(max-width:460px){
  .hero-stats{grid-template-columns:1fr;}
}

/* mobile overflow guards */
.cs-layout>*{min-width:0;}
.cs-article{min-width:0;max-width:100%;}
.cs-code{overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch;}
.cs-code::-webkit-scrollbar{height:4px;}
.cs-code::-webkit-scrollbar-thumb{background:#c9cec4;border-radius:2px;}
.cs-article pre{overflow-x:auto;max-width:100%;}