:root{
  --bg:#0e1116; --panel:#151922; --panel2:#1b202b; --text:#f4f7fb; --muted:#a5afbf;
  --line:#2a3140; --accent:#e23b3b; --accent2:#ff6b5e; --gold:#d7b25c; --soft:#21191a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:
radial-gradient(circle at 20% 0%,#1a202c 0,transparent 32%),var(--bg);color:var(--text);line-height:1.58}
a{color:inherit}
.wrap{width:min(1060px,calc(100% - 30px));margin:auto}
header{position:sticky;top:0;z-index:10;background:rgba(14,17,22,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.head{height:66px;display:flex;align-items:center;justify-content:space-between}
.brand{text-decoration:none;font-weight:900;letter-spacing:.12em;font-size:1rem}
.brand b{color:var(--accent2)}
nav a{text-decoration:none;color:var(--muted);margin-left:18px;font-weight:700;font-size:.92rem}
.hero{padding:70px 0 34px}
.kicker{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent2);font-weight:900}
h1{font-size:clamp(2.3rem,6vw,5rem);line-height:.98;letter-spacing:-.055em;margin:14px 0 18px}
h2{letter-spacing:-.03em}
.lead{font-size:1.12rem;color:var(--muted);max-width:680px}
.grid2{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:start}
.card{background:linear-gradient(180deg,var(--panel),#11151c);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.rule{padding:14px 15px;background:#10141b;border:1px solid var(--line);border-radius:14px;color:#d7deea}
.case-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.badge{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:.76rem;color:var(--muted);font-weight:800}
.suspect{padding:15px 0;border-top:1px solid var(--line)}
.suspect:first-of-type{border-top:0}
.suspect strong{display:block;margin-bottom:4px}
.suspect p{margin:0;color:#c5cedb}
.choices{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:18px}
.choice{background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:12px 8px;font-weight:800;cursor:pointer}
.choice:hover{border-color:#4c586d}
.choice.selected{border-color:var(--accent2);background:#25191b}
.primary{border:0;background:var(--accent);color:#fff;border-radius:12px;padding:13px 16px;font:inherit;font-weight:900;cursor:pointer;margin-top:14px}
.primary:hover{background:#c93232}
.feedback{display:none;margin-top:16px;padding:15px;border-radius:14px}
.feedback.show{display:block}
.feedback.good{background:#14251d;border:1px solid #315a44}
.feedback.bad{background:#291819;border:1px solid #6a3034}
.solution{display:none;margin-top:14px;color:#cbd4df}
.solution.show{display:block}
.stat{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line)}
.stat:last-child{border-bottom:0}
.stat b{font-size:1.2rem}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.linkbtn{display:inline-flex;text-decoration:none;border:1px solid var(--line);border-radius:12px;padding:11px 13px;color:#dfe6ef;font-weight:800}
.bookbox{margin-top:18px;background:linear-gradient(135deg,#241717,#171a21);border:1px solid #503033;border-radius:18px;padding:18px}
.bookbox p{color:#c8d1dd}
.section{padding:28px 0}
.case-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.case-link{text-decoration:none;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px}
.case-link:hover{border-color:#465064}
.case-link small{color:var(--muted)}
footer{margin-top:60px;border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font-size:.88rem}
.muted{color:var(--muted)}
@media(max-width:780px){.grid2{grid-template-columns:1fr}.case-list{grid-template-columns:repeat(2,1fr)}nav{display:none}}
@media(max-width:520px){.choices{grid-template-columns:1fr 1fr}.case-list{grid-template-columns:1fr}.wrap{width:min(100% - 20px,1060px)}}