:root{--bg:#f4f7fb;--surface:#fff;--text:#1f2937;--muted:#64748b;--primary:#2b579a;--primary-dark:#1f3f73;--primary-soft:#e8f0fb;--accent:#185abd;--border:#dbe4f0;--soft:#e8f0fb;--warning:#f6f9ff;--radius:18px;--shadow:0 14px 35px rgba(31,63,115,.13)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--bg);line-height:1.65}a{color:inherit;text-decoration:none}.container{width:min(1160px,calc(100% - 32px));margin:0 auto}.topbar{background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;flex-direction:column;line-height:1.12;font-weight:800;letter-spacing:-.02em}.brand span:first-child{color:var(--primary);font-size:1.28rem}.brand span:last-child{color:var(--muted);font-size:.82rem;font-weight:600}.main-nav{display:flex;align-items:center;gap:18px;font-size:.96rem;color:var(--muted)}.main-nav a:hover{color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:11px 18px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:.2s ease}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}.btn-secondary{background:#fff;border-color:var(--border);color:var(--text)}.btn-secondary:hover{border-color:#b7cae6;color:var(--primary)}.hero{padding:58px 0 42px;background:radial-gradient(circle at top left,rgba(43,87,154,.20),transparent 34%),linear-gradient(180deg,#fff 0%,var(--bg) 100%);border-bottom:1px solid var(--border)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:34px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--soft);color:var(--primary-dark);border:1px solid #b7cae6;border-radius:999px;padding:7px 12px;font-size:.9rem;font-weight:700;margin-bottom:18px}h1{font-size:clamp(2.15rem,5vw,4.25rem);line-height:1.03;letter-spacing:-.055em;margin:0 0 18px}.lead{color:var(--muted);font-size:1.17rem;max-width:760px;margin:0 0 26px}.hero-actions,.quick-links{display:flex;flex-wrap:wrap;gap:12px}.quick-links{margin-top:18px}.chip{background:#fff;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:8px 12px;font-size:.92rem}.chip:hover{color:var(--primary);border-color:#b7cae6;background:var(--soft)}.panel,.box,.toc,.side-card,.guide-card,.problem-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 20px rgba(15,23,42,.045)}.panel{padding:26px;box-shadow:var(--shadow)}.panel h2,.side-card h3{margin:0 0 10px;letter-spacing:-.03em}.panel p,.side-card p{color:var(--muted);margin:0 0 14px}.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.check-list li{display:grid;grid-template-columns:28px 1fr;gap:10px;color:var(--muted)}.icon{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:#dbeafe;color:var(--primary);font-weight:900}section{padding:54px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:24px}.section-title h2{font-size:clamp(1.6rem,3vw,2.35rem);line-height:1.12;letter-spacing:-.045em;margin:0}.section-title p{color:var(--muted);margin:0;max-width:560px}.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.guide-card{display:block;padding:22px;transition:.2s ease;min-height:190px}.guide-card:hover,.problem-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#b7cae6}.tag{display:inline-block;color:var(--primary);font-weight:800;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}.guide-card h3,.problem-card h3{margin:9px 0 8px;font-size:1.18rem;line-height:1.25;letter-spacing:-.025em}.guide-card p,.problem-card p{margin:0 0 14px;color:var(--muted);font-size:.96rem}.read-more{color:var(--primary);font-weight:800}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:30px;align-items:start;padding:42px 0 62px}.article{display:grid;gap:22px}.box{padding:28px}.box h2{font-size:clamp(1.45rem,3vw,2rem);line-height:1.18;letter-spacing:-.04em;margin:0 0 14px}.box h3{font-size:1.15rem;letter-spacing:-.025em;margin:22px 0 8px}.box p{margin:0 0 14px}.box ul,.box ol{margin:12px 0 0;padding-left:22px}.box li{margin-bottom:8px}.answer{background:var(--primary-soft);border:1px solid #b7cae6;border-radius:22px;padding:24px;box-shadow:var(--shadow)}.answer h2{color:var(--primary-dark);margin:0 0 12px}.note{background:#fff8e7;border:1px solid #f4d58d;border-radius:16px;padding:16px;color:#6f4e00;margin-top:16px}.warning{background:#fff1f2;border:1px solid #fecdd3;border-radius:16px;padding:16px;color:#881337;margin-top:16px}.example{background:#0f2444;color:#e8f0fb;border-radius:14px;padding:15px 16px;font-family:Consolas,Monaco,monospace;overflow-x:auto;margin:14px 0;font-size:.96rem}.toc{padding:20px;position:sticky;top:92px}.toc strong{display:block;margin-bottom:10px;color:var(--primary-dark)}.toc a{display:block;padding:8px 0;color:var(--muted);border-bottom:1px solid var(--border);font-size:.94rem}.toc a:last-child{border-bottom:0}.toc a:hover{color:var(--primary)}.side-card{padding:20px;margin-top:18px}.ad-box{border:2px dashed #b7cae6;background:#f8fbff;border-radius:18px;padding:18px;text-align:center;color:#45637d;min-height:180px;display:flex;flex-direction:column;justify-content:center}.ad-box strong{color:var(--primary-dark);display:block;margin-bottom:8px}.course-box{background:linear-gradient(135deg,#2b579a 0%,#17365d 100%);color:#fff;border-radius:22px;padding:22px;margin-top:18px}.course-box p{color:#dbeafe}.course-box .btn{margin-top:10px}.diagnosis-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.problem-card{display:block;padding:20px;transition:.2s ease;min-height:165px}.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.92rem;margin-bottom:20px}.breadcrumb a{color:var(--primary-dark);font-weight:700}.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:14px}.related a{background:var(--primary-soft);border:1px solid #b7cae6;border-radius:16px;padding:15px;color:var(--primary-dark);font-weight:800}.cta{background:linear-gradient(135deg,#2b579a 0%,#17365d 100%);color:#fff;border-radius:28px;padding:30px;display:flex;align-items:center;justify-content:space-between;gap:24px}.cta h2{margin:0 0 8px;font-size:1.65rem;letter-spacing:-.035em}.cta p{margin:0;color:#dbeafe;max-width:720px}.footer{padding:34px 0;border-top:1px solid var(--border);background:var(--surface);color:var(--muted);font-size:.95rem}.footer-inner{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.search-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;display:flex;gap:10px;max-width:720px}.search-box input{flex:1;border:0;outline:0;font-size:1rem;padding:12px 14px;min-width:0}.hidden{display:none!important}@media(max-width:980px){.hero-grid,.layout{grid-template-columns:1fr}.toc{position:static}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.diagnosis-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.related{grid-template-columns:1fr}}@media(max-width:680px){.nav{align-items:flex-start;flex-direction:column;padding:18px 0}.main-nav{flex-wrap:wrap}.hero{padding-top:38px}.guide-grid,.diagnosis-grid{grid-template-columns:1fr}.section-title,.cta{align-items:flex-start;flex-direction:column}.box,.answer{padding:22px}.search-box{flex-direction:column}}
.footer {
	padding: 38px 0;
	background: #fff;
	border-top: 1px solid var(--border);
	color: var(--muted);
}
.footer-grid {
	display: grid;
	grid-template-columns: 1.4fr 1fr 1fr;
	gap: 24px;
}
.footer strong {
	display: block;
	color: var(--text);
	margin-bottom: 8px;
}
.footer a {
	display: block;
	margin: 5px 0;
}
.footer a:hover {
	color: var(--primary);
}