:root{
  --navy:#06172b;
  --navy-2:#0b2442;
  --navy-3:#12375f;
  --gold:#d6a43a;
  --gold-light:#f4d47a;
  --cream:#fffaf0;
  --paper:#ffffff;
  --ink:#172033;
  --muted:#647084;
  --line:#dbe2ea;
  --success:#1c7c54;
  --warning:#a06400;
  --danger:#a52a2a;
  --shadow:0 18px 45px rgba(3,20,40,.12);
  --radius:18px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:#f5f7fa;line-height:1.65}
a{color:var(--navy-3);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#8b5a00}
img{max-width:100%;height:auto}
button,input,textarea,select{font:inherit}
.container{width:min(var(--max),calc(100% - 36px));margin-inline:auto}
.skip-link{position:absolute;left:-9999px;top:auto}.skip-link:focus{left:18px;top:18px;z-index:9999;background:#fff;padding:10px 14px;border-radius:8px}
.topbar{background:#020a14;color:#d7e2ef;font-size:.88rem}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:14px;min-height:38px}
.topbar a{color:#f3d47d;text-decoration:none}
.utility-links{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(6,23,43,.96);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.nav-wrap{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;min-width:max-content}
.brand img{width:62px;height:62px;border-radius:50%;box-shadow:0 0 0 2px rgba(214,164,58,.45)}
.brand-text strong{display:block;font-family:Georgia,serif;font-size:1.15rem;letter-spacing:.05em;color:var(--gold-light)}
.brand-text span{display:block;font-size:.75rem;color:#c4d0dd;letter-spacing:.08em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a,.nav-dropdown>button{color:#e9eff6;text-decoration:none;background:none;border:0;padding:12px 10px;border-radius:9px;cursor:pointer;white-space:nowrap}
.main-nav a:hover,.main-nav a.active,.nav-dropdown>button:hover{background:rgba(255,255,255,.09);color:#fff}
.nav-dropdown{position:relative}
.dropdown-menu{display:none;position:absolute;top:100%;left:0;background:#fff;min-width:280px;padding:10px;border-radius:14px;box-shadow:var(--shadow);border:1px solid var(--line)}
.dropdown-menu a{display:block;color:var(--ink);padding:10px 12px}
.dropdown-menu a:hover{background:#f3f6fa;color:var(--navy)}
.nav-dropdown:hover .dropdown-menu,.nav-dropdown:focus-within .dropdown-menu{display:block}
.nav-actions{display:flex;gap:8px;align-items:center}
.icon-btn,.mode-btn,.menu-btn{border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:white;border-radius:10px;padding:10px 12px;cursor:pointer;text-decoration:none}
.icon-btn:hover,.mode-btn:hover,.menu-btn:hover{background:rgba(255,255,255,.14)}
.menu-btn{display:none}
.page-hero{background:radial-gradient(circle at 15% 20%,rgba(214,164,58,.16),transparent 30%),linear-gradient(135deg,#06172b,#0b2a4c 65%,#091b31);color:white;padding:72px 0 64px;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;right:-100px;bottom:-180px;width:420px;height:420px;border:1px solid rgba(244,212,122,.16);border-radius:50%;box-shadow:0 0 0 36px rgba(244,212,122,.04),0 0 0 72px rgba(244,212,122,.03)}
.hero-grid{display:grid;grid-template-columns:1.35fr .65fr;align-items:center;gap:48px;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold-light);text-transform:uppercase;letter-spacing:.16em;font-weight:700;font-size:.78rem}
.page-hero h1{font-family:Georgia,serif;font-size:clamp(2.35rem,5vw,4.6rem);line-height:1.05;margin:.35em 0 .28em;max-width:900px}
.page-hero p{font-size:1.13rem;color:#d8e2ed;max-width:760px;margin:0}
.hero-logo{width:min(360px,85vw);justify-self:end;border-radius:50%;filter:drop-shadow(0 24px 35px rgba(0,0,0,.35))}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:12px 18px;font-weight:750;text-decoration:none;border:1px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--gold-light),var(--gold));color:#1e1504}.btn-primary:hover{color:#1e1504;transform:translateY(-1px)}
.btn-secondary{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}.btn-secondary:hover{background:rgba(255,255,255,.08);color:#fff}
.btn-dark{background:var(--navy);color:#fff}.btn-dark:hover{background:var(--navy-3);color:#fff}
.btn-outline{border-color:var(--navy);color:var(--navy);background:#fff}.btn-outline:hover{background:#eef3f8}
.alert-strip{background:#fff4ce;border-bottom:1px solid #e9d18a;color:#5b4300;padding:10px 0;font-size:.94rem}
.section{padding:68px 0}.section-sm{padding:42px 0}.section-white{background:#fff}.section-navy{background:var(--navy);color:#fff}.section-gold{background:#f9f0d8}
.section-header{max-width:780px;margin-bottom:30px}.section-header.center{text-align:center;margin-inline:auto;margin-bottom:38px}
.section-header h2,.content h2{font-family:Georgia,serif;color:var(--navy);font-size:clamp(1.75rem,3vw,2.6rem);line-height:1.2;margin:.15em 0 .45em}
.section-navy .section-header h2{color:white}
.section-header p{font-size:1.05rem;color:var(--muted)}.section-navy .section-header p{color:#c8d4e2}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 10px 30px rgba(15,40,70,.06)}
.card h3{color:var(--navy);font-family:Georgia,serif;font-size:1.3rem;margin:.15em 0 .45em}.card p:last-child{margin-bottom:0}
.card-link{display:block;text-decoration:none;color:inherit;transition:.2s transform,.2s box-shadow}.card-link:hover{transform:translateY(-4px);box-shadow:var(--shadow);color:inherit}
.icon-circle{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:#f7ebc9;color:#7d5200;font-weight:900;margin-bottom:15px}
.stat-card{text-align:center;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:24px}.stat-card strong{display:block;color:var(--gold-light);font-size:2rem;font-family:Georgia,serif}.stat-card span{color:#d4deea}
.breadcrumbs{font-size:.9rem;margin-bottom:16px;color:#c9d4df}.breadcrumbs a{color:var(--gold-light)}
.content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start}
.content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:0 12px 35px rgba(15,40,70,.05)}
.content h2{margin-top:1.7em}.content h2:first-child{margin-top:0}.content h3{color:var(--navy);font-size:1.25rem;margin-top:1.5em}.content table{width:100%;border-collapse:collapse;margin:20px 0;display:block;overflow-x:auto}.content th,.content td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}.content th{background:#eef3f8;color:var(--navy)}
.content blockquote{margin:24px 0;padding:18px 22px;border-left:5px solid var(--gold);background:#fff9e9;border-radius:0 12px 12px 0}
.sidebar{position:sticky;top:116px}.side-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:18px}.side-card h3{margin-top:0;color:var(--navy);font-family:Georgia,serif}.side-nav a{display:block;text-decoration:none;padding:9px 0;border-bottom:1px solid #edf1f5}.side-nav a:last-child{border-bottom:0}
.check-list{list-style:none;padding:0;margin:16px 0}.check-list li{position:relative;padding-left:30px;margin:9px 0}.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--success);font-weight:900}
.red-list li:before{content:"!";color:var(--danger)}
.pill-row{display:flex;gap:8px;flex-wrap:wrap}.pill{display:inline-flex;border:1px solid #cbd6e1;background:#f4f7fa;color:#26384d;border-radius:999px;padding:6px 11px;font-size:.84rem}
.study-tip{border-left:4px solid var(--gold);background:#fff8e7;padding:16px 18px;border-radius:0 12px 12px 0;margin:20px 0}.study-tip strong{color:#704a00}
body.exam-mode .study-tip,body.exam-mode .study-only{display:none!important}
.mode-indicator{font-size:.78rem;color:var(--gold-light)}
.station-toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:24px}.station-toolbar input,.station-toolbar select{background:#fff;border:1px solid #c9d3de;border-radius:10px;padding:11px 13px;min-height:44px}.station-toolbar input{flex:1;min-width:220px}
.station-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.station-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:10px}.station-card h3{margin:0;color:var(--navy)}.station-card .meta{font-size:.82rem;color:var(--muted)}.station-card .btn{margin-top:auto}
.timer-shell{background:linear-gradient(145deg,#06172b,#0d3158);color:#fff;border-radius:24px;padding:32px;box-shadow:var(--shadow)}
.timer-display{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:clamp(3.2rem,9vw,7rem);line-height:1;text-align:center;color:var(--gold-light);letter-spacing:.03em;margin:22px 0}.timer-controls{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}.timer-phase{text-align:center;text-transform:uppercase;letter-spacing:.15em;color:#c9d6e5;font-weight:700}.progress-track{height:10px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,var(--gold),var(--gold-light));width:100%;transition:width 1s linear}
.practice-case{margin-top:28px}.hidden{display:none!important}.answer-panel{background:#eef8f3;border:1px solid #b7dfc9;border-radius:14px;padding:20px;margin-top:18px}
.accordion{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;margin:12px 0}.accordion button{width:100%;text-align:left;border:0;background:#fff;padding:17px 18px;font-weight:750;color:var(--navy);display:flex;justify-content:space-between;cursor:pointer}.accordion-panel{display:none;padding:0 18px 18px}.accordion.open .accordion-panel{display:block}.accordion.open button{background:#f5f8fb}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.form-field label{display:block;font-weight:700;margin-bottom:6px}.form-field input,.form-field textarea,.form-field select{width:100%;border:1px solid #c7d1dc;border-radius:10px;padding:12px;background:#fff}.form-field textarea{min-height:150px;resize:vertical}.form-field.full{grid-column:1/-1}
.notice{border-radius:12px;padding:14px 16px;margin:15px 0}.notice-success{background:#e9f7ef;border:1px solid #b8dfc8;color:#185a3e}.notice-error{background:#fff0f0;border:1px solid #ebc2c2;color:#7c1f1f}.notice-info{background:#eef6ff;border:1px solid #bed7ef;color:#183f64}
.site-footer{background:#020a14;color:#c6d1dd;padding:56px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:34px}.footer-brand img{width:90px;border-radius:50%;float:left;margin:0 16px 12px 0}.site-footer h3{color:#f5d77f;font-family:Georgia,serif;margin-top:0}.site-footer a{color:#dce6f0;text-decoration:none}.site-footer a:hover{color:#f5d77f}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:8px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.88rem}
.back-to-top{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border:0;border-radius:50%;background:var(--gold);color:#1b1304;font-weight:900;box-shadow:0 10px 25px rgba(0,0,0,.2);cursor:pointer;display:none;z-index:900}
.back-to-top.show{display:block}
.kicker{color:#896000;text-transform:uppercase;letter-spacing:.12em;font-weight:800;font-size:.76rem}.lead{font-size:1.12rem;color:#4d5c6d}
hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.inline-links{display:flex;gap:12px;flex-wrap:wrap}.small{font-size:.88rem}.muted{color:var(--muted)}
@media(max-width:1050px){.main-nav{display:none;position:absolute;left:0;right:0;top:84px;background:#06172b;padding:14px 18px 22px;flex-direction:column;align-items:stretch;border-top:1px solid rgba(255,255,255,.1)}.main-nav.open{display:flex}.main-nav a,.nav-dropdown>button{text-align:left;width:100%}.dropdown-menu{position:static;box-shadow:none;margin:3px 0;background:#0c2847;border-color:rgba(255,255,255,.12)}.dropdown-menu a{color:#e5edf6}.menu-btn{display:inline-flex}.nav-actions .mode-btn{display:none}.hero-grid{grid-template-columns:1fr}.hero-logo{justify-self:center;max-width:300px;order:-1}.page-hero{text-align:center}.page-hero p{margin-inline:auto}.hero-actions{justify-content:center}.content-wrap{grid-template-columns:1fr}.sidebar{position:static}.station-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.topbar .container{justify-content:center;text-align:center}.topbar .utility-links{display:none}.brand-text span{display:none}.brand img{width:54px;height:54px}.nav-wrap{min-height:74px}.main-nav{top:74px}.page-hero{padding:52px 0}.hero-logo{max-width:230px}.grid-2,.grid-3,.grid-4,.station-grid,.form-grid,.footer-grid{grid-template-columns:1fr}.content{padding:24px}.section{padding:52px 0}.nav-actions .icon-btn.back-btn{display:none}.footer-brand img{float:none}.timer-shell{padding:24px 16px}.page-hero h1{font-size:2.35rem}}
@media print{.topbar,.site-header,.site-footer,.back-to-top,.hero-actions,.sidebar,.alert-strip{display:none!important}.page-hero{background:#fff;color:#000;padding:20px 0}.page-hero p,.breadcrumbs{color:#333}.content-wrap{display:block}.content{border:0;box-shadow:none;padding:0}.section{padding:20px 0}a{color:#000;text-decoration:none}.study-tip{border:1px solid #ccc}}