:root{
  --ink:#0f172a;
  --muted:#64748b;
  --bg:#f5f7fb;
  --panel:#ffffff;
  --line:#dbe4f0;
  --brand:#1d4ed8;
  --brand-dark:#1e3a8a;
  --accent:#f59e0b;
  --accent-soft:#fff7e6;
  --soft:#eaf1ff;
  --green:#0f766e;
  --danger:#b91c1c;
  --shadow:0 18px 45px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
a{color:inherit}.topbar{background:linear-gradient(90deg,var(--brand-dark),#0f766e);color:#fff;text-align:center;padding:10px 16px;font-size:13px;font-weight:800;letter-spacing:.01em}.nav-wrap{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-inner{max-width:1180px;margin:auto;padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.mark,.logo{width:48px;height:48px;border-radius:15px;background:linear-gradient(135deg,var(--brand),#38bdf8);color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 12px 28px rgba(29,78,216,.25)}.brand h1{font-size:18px;line-height:1.1;margin:0;color:#0f172a}.brand span,.brand p{font-size:12px;color:var(--muted);margin:0}.menu,.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.menu a,.nav a{color:#1e293b;text-decoration:none;padding:10px 12px;border-radius:12px;font-weight:800;font-size:14px}.menu a:hover,.menu a.active,.nav a:hover,.nav a.active{background:var(--soft);color:var(--brand)}.cta-small{background:var(--accent)!important;color:#111827!important;box-shadow:0 10px 24px rgba(245,158,11,.25)}.hero{background:radial-gradient(circle at 8% 0%,#dbeafe 0,#eef6ff 25%,transparent 26%),linear-gradient(135deg,#f8fbff 0%,#eef6ff 55%,#fff7e6 100%);border-bottom:1px solid var(--line)}.hero-grid{max-width:1180px;margin:auto;padding:62px 18px;display:grid;grid-template-columns:.95fr 1.05fr;gap:30px;align-items:center}.hero-copy{background:rgba(255,255,255,.86);border:1px solid #e2e8f0;border-radius:32px;padding:34px;box-shadow:var(--shadow)}.kicker{display:inline-flex;gap:8px;align-items:center;background:#ecfdf5;color:#0f766e;border:1px solid #bbf7d0;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:900}.hero h2{font-size:44px;line-height:1.08;margin:18px 0 16px;letter-spacing:-.035em;color:#0b1220}.hero p{font-size:17px;color:#475569;max-width:720px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn,.button,button{border:0;background:linear-gradient(135deg,var(--brand),#2563eb);color:#fff;padding:14px 19px;border-radius:14px;font-weight:900;font-size:15px;cursor:pointer;box-shadow:0 14px 30px rgba(29,78,216,.24);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn:hover,button:hover{filter:brightness(.98);transform:translateY(-1px)}.btn-light{background:linear-gradient(135deg,var(--brand),#2563eb);color:#fff}.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--brand);box-shadow:none}.btn-secondary{background:#eef6ff!important;color:var(--brand)!important;box-shadow:none!important;border:1px solid #bfdbfe!important}.segment-card{background:#0f172a;color:#fff;border-radius:32px;overflow:hidden;box-shadow:0 30px 80px rgba(15,23,42,.22);display:grid;grid-template-columns:220px 1fr;min-height:410px}.segment-left{background:linear-gradient(180deg,#f59e0b,#fde68a);padding:26px;color:#111827;display:flex;flex-direction:column;justify-content:space-between}.segment-left b{font-size:54px;line-height:1}.segment-left span{font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:12px}.segment-right{padding:34px;background:linear-gradient(145deg,#0f172a,#1e3a8a)}.segment-right h3{font-size:28px;margin:0 0 12px;color:#fff}.segment-right p{color:#dbeafe}.check-list{padding-left:0;list-style:none;margin:18px 0}.check-list li{margin:12px 0;padding-left:30px;position:relative}.check-list li:before{content:'✓';position:absolute;left:0;top:0;color:#22c55e;font-weight:900}.container{max-width:1180px;margin:auto;padding:36px 18px}.section-title{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:18px}.section-title h2{font-size:32px;margin:0;letter-spacing:-.025em;color:#0f172a}.section-title p{margin:0;color:var(--muted)}.card{background:var(--panel);border:1px solid var(--line);border-radius:26px;padding:28px;margin-bottom:22px;box-shadow:var(--shadow)}.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:22px}.side-panel{background:linear-gradient(160deg,#1e3a8a,#0f766e);color:#fff;border-radius:24px;padding:26px;min-height:100%}.side-panel h3{font-size:24px;margin:0 0 10px}.side-panel p{color:#e0f2fe}.info-note{background:#fff7e6;border-left:5px solid var(--accent);padding:15px 16px;border-radius:14px;color:#5f3d06}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.two-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat{background:#f8fbff;border:1px solid var(--line);border-radius:18px;padding:18px}.stat b{font-size:30px;color:var(--brand);display:block}label.small{font-size:13px;font-weight:900;color:#334155;display:block;margin-bottom:6px}input,select,textarea{width:100%;border:1px solid #cbd5e1;border-radius:14px;padding:14px 13px;font-size:15px;background:#fff;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:3px solid #dbeafe;border-color:#60a5fa}textarea{min-height:95px}.badge,.pill{display:inline-flex;background:#eef6ff;color:#1d4ed8;padding:8px 11px;border-radius:999px;font-size:13px;font-weight:900}.pill-row{display:flex;flex-wrap:wrap;gap:10px}.exam-top{display:flex;justify-content:space-between;gap:12px;align-items:center;background:#f8fbff;border:1px solid var(--line);border-radius:18px;padding:14px;margin-bottom:15px}.timer{font-weight:900;background:#fff7e6;border:1px solid #fde68a;color:#92400e;padding:10px 13px;border-radius:999px}.question{font-size:22px;font-weight:900;line-height:1.45}.option{display:flex;align-items:flex-start;gap:12px;border:1px solid #dbe4f0;background:#fff;border-radius:16px;padding:14px 15px;margin:10px 0;cursor:pointer;font-weight:700}.option .letter{width:34px;height:34px;min-width:34px;border-radius:50%;display:grid;place-items:center;background:#eef6ff;color:var(--brand);font-weight:900}.option:hover{border-color:#93c5fd;background:#f8fbff}.option input{width:auto;margin-top:8px}.option:has(input:checked){border-color:var(--brand);background:#eff6ff;box-shadow:0 0 0 3px #dbeafe}.exam-shell{min-height:100vh;background:#eaf1ff}.exam-hero{background:linear-gradient(135deg,#0f172a,#1d4ed8);color:#fff;padding:30px 18px}.exam-hero-inner{max-width:1120px;margin:auto;display:flex;justify-content:space-between;gap:18px;align-items:center}.exam-hero h1{margin:0;font-size:28px}.exam-hero p{margin:6px 0 0;color:#dbeafe}.exam-card{max-width:1120px;margin:28px auto;padding:0 18px}.exam-screen{background:#fff;border:1px solid var(--line);border-radius:26px;padding:28px;box-shadow:var(--shadow)}.exam-mode .topbar,.exam-mode .nav-wrap,.exam-mode .footer,.exam-mode .exam-hero{display:none}.exam-mode body,.exam-mode{background:#eaf1ff}.exam-mode .exam-card{max-width:980px;margin:18px auto}.exam-mode .exam-screen{min-height:calc(100vh - 36px);display:flex;flex-direction:column}.exam-mode #exam{display:flex!important;flex-direction:column;flex:1}.exam-mode #options{margin-top:10px}.exam-mode .two-grid{margin-top:auto}.progress-strip{height:10px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin:12px 0 18px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--brand),#38bdf8);width:0%}table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:14px}th,td{border-bottom:1px solid var(--line);padding:14px;text-align:left;vertical-align:top}th{background:#f8fbff;color:#0f172a}.course-card{border:1px solid var(--line);border-radius:24px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}.course-head{padding:24px;background:linear-gradient(135deg,#eff6ff,#f0fdfa)}.course-body{padding:24px}.download-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:15px}.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.post-tile,.post-list a{padding:19px;border-radius:18px;border:1px solid var(--line);background:#fff;text-decoration:none;color:var(--ink);display:block}.post-tile:hover,.post-list a:hover{border-color:#93c5fd;box-shadow:0 10px 30px rgba(15,23,42,.08)}.site-header{background:linear-gradient(135deg,#eff6ff,#f8fbff);border-bottom:1px solid var(--line);padding:18px}.site-header .brand-row{max-width:1180px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:16px}.footer{background:#0f172a;color:#dbeafe;margin-top:32px}.footer-inner{max-width:1180px;margin:auto;padding:36px 18px;display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:20px}.footer a{color:#fff;text-decoration:none;display:block;margin:7px 0}.footer a:hover{color:#fbbf24}.footer h3,.footer h4{color:#fff;margin-top:0}.copyright{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:14px 18px;color:#bfdbfe}.notice{color:var(--muted)}@media(max-width:860px){.nav-inner,.site-header .brand-row,.exam-hero-inner{align-items:flex-start;flex-direction:column}.menu,.nav{width:100%;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}.menu a,.nav a{white-space:nowrap}.hero-grid,.split,.segment-card,.footer-inner{grid-template-columns:1fr}.hero h2{font-size:32px}.hero-copy{padding:24px}.segment-left{min-height:160px}.grid,.two-grid,.stat-grid,.post-list{grid-template-columns:1fr}.exam-top{align-items:flex-start;flex-direction:column}.container{padding:22px 14px}.card{padding:20px;border-radius:20px}.hero-grid{padding:38px 18px}.section-title{display:block}.exam-screen{padding:18px}.exam-card{margin:18px auto}.question{font-size:19px}}