:root{
  --bg:#f6f8fb; --card:#ffffff; --ink:#1f2937; --muted:#6b7280;
  --line:#e5e7eb; --primary:#4f46e5; --primary-d:#4338ca;
  --primary-soft:#eef2ff; --accent:#0ea5e9; --ok:#10b981;
  --radius:16px; --shadow:0 6px 24px rgba(31,41,55,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.65; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

/* Header */
.site-header{background:linear-gradient(120deg,#4f46e5,#0ea5e9);color:#fff;position:sticky;top:0;z-index:20}
.site-header .nav{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;max-width:960px;margin:0 auto}
.brand{font-weight:800;font-size:19px;color:#fff;display:flex;align-items:center;gap:6px}
.brand .en{font-size:12px;opacity:.8;font-weight:600;letter-spacing:.5px}
.site-header nav a{color:#fff;opacity:.92;margin-left:18px;font-size:14px}

/* Hero */
.hero{padding:48px 0 24px;text-align:center}
.hero h1{font-size:30px;line-height:1.3;margin:0 0 14px}
.lead{font-size:17px;color:var(--ink);margin:0 auto 8px;max-width:620px}
.muted{color:var(--muted);font-size:14px}
.small{font-size:12px}

.version-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:28px 0 14px}
.vcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:left;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s;color:var(--ink);display:block}
.vcard:hover{transform:translateY(-3px);text-decoration:none;box-shadow:0 12px 30px rgba(31,41,55,.14)}
.vcard.primary{border:2px solid var(--primary);background:linear-gradient(180deg,#fafaff,#fff)}
.badge{display:inline-block;background:var(--primary);color:#fff;font-size:11px;padding:2px 8px;border-radius:999px;margin-bottom:8px}
.badge.subtle{background:var(--primary-soft);color:var(--primary-d)}
.vcard h2{margin:6px 0 4px;font-size:20px}
.vcard .meta{color:var(--primary-d);font-size:13px;margin:0 0 8px;font-weight:600}
.vcard .desc{color:var(--muted);font-size:14px;margin:0 0 12px;min-height:42px}
.vcard .cta{font-weight:700;color:var(--primary)}
.hint{color:var(--muted);font-size:13px;margin-top:6px}

/* Why / grid */
.why{padding:24px 0}
.why h2,.sample h2{font-size:22px;text-align:center;margin:18px 0}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:15px;color:var(--primary-d)}
.card p{margin:0;font-size:13px;color:var(--muted)}

/* Sample report */
.sample{padding:24px 0 40px}
.sample-report{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);max-width:680px;margin:0 auto;text-align:left}
.sample-report h3{font-size:16px;margin:18px 0 6px}
.sample-report ul{margin:6px 0;padding-left:20px}

/* Quiz */
.quiz{padding:28px 0 40px;max-width:680px;margin:0 auto}
.quiz-head h1{font-size:24px;margin:0 0 6px}
.progress{height:8px;background:var(--line);border-radius:999px;overflow:hidden;margin:14px 0 6px}
.progress .bar{height:100%;width:0;background:linear-gradient(90deg,#4f46e5,#0ea5e9);transition:width .25s}
.progress-text{font-size:13px;color:var(--muted);margin:0}
.quiz-root .q-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-top:14px}
.quiz-root .q-block .q-text{font-size:18px;font-weight:700;margin:0 0 16px}
.opt{display:block;width:100%;text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px;cursor:pointer;font-size:15px;transition:all .12s;color:var(--ink)}
.opt:hover{border-color:var(--primary);background:var(--primary-soft)}
.opt.selected{border-color:var(--primary);background:var(--primary-soft);font-weight:600}
.quiz-nav{display:flex;justify-content:space-between;margin-top:16px;gap:12px}
.exit-hint{margin-top:18px;font-size:13px;color:var(--muted);text-align:center}
.email-step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-top:14px;text-align:center}
.email-step h2{font-size:18px;margin:0 0 6px}
.email-step input{width:100%;max-width:360px;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;margin:10px 0}
.email-step .err{color:#dc2626;font-size:13px}
.email-step .small{margin-top:10px}

/* Buttons */
.btn{display:inline-block;border:none;border-radius:10px;padding:12px 20px;font-size:15px;cursor:pointer;font-weight:600;transition:all .12s}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-d);text-decoration:none}
.btn.ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* Report */
.report-page{padding:28px 0 40px}
.report-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);max-width:720px;margin:0 auto}
.report-top .tag{display:inline-block;background:var(--primary-soft);color:var(--primary-d);font-size:12px;padding:3px 10px;border-radius:999px}
.report-top h1{font-size:24px;margin:10px 0 6px}
.report-body h3{font-size:17px;margin:22px 0 8px;color:var(--primary-d);border-left:4px solid var(--primary);padding-left:10px}
.report-body .tendency{font-size:15px}
.report-body .dirs{list-style:none;padding:0;margin:8px 0}
.report-body .dirs li{background:var(--primary-soft);border-radius:10px;padding:12px 14px;margin-bottom:10px;font-size:14px}
.report-body .dirs.detailed li{background:#fff;border:1px solid var(--line)}
.report-body .dirs .why,.report-body .dirs .skill{display:block;color:var(--muted);font-size:13px;margin-top:4px}
.report-body .avoid li{margin-bottom:8px}
.report-body .road{margin:4px 0 4px 18px}
.report-body .books{list-style:none;padding:0;margin:8px 0}
.report-body .books li{font-size:14px;margin-bottom:8px}
.aff-note{font-size:12px;color:var(--muted)}
.cross-up{background:#fff7ed;border:1px solid #fed7aa;border-radius:10px;padding:12px 14px;margin-top:14px;font-size:14px}
.disclaimer{font-size:12px;color:var(--muted);border-top:1px dashed var(--line);padding-top:12px;margin-top:18px}
.report-actions{display:flex;gap:12px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.center{text-align:center}

/* Legal */
.legal{max-width:720px;margin:0 auto;padding:28px 0 40px}
.legal h1{font-size:24px}
.legal h2{font-size:18px;margin-top:24px;color:var(--primary-d)}
.legal ul{padding-left:20px}

/* Footer */
.site-footer{background:#0f172a;color:#cbd5e1;margin-top:40px;padding:24px 0;font-size:13px}
.site-footer .muted{color:#94a3b8}
.site-footer p{margin:4px 0}

/* Responsive */
@media (max-width:720px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .version-cards{grid-template-columns:1fr}
  .hero h1{font-size:24px}
  .lead{font-size:15px}
}
@media (max-width:420px){
  .grid{grid-template-columns:1fr}
}