:root{
  --cat-primary:#f59e0b;
  --cat-primary-dark:#d97706;
  --cat-primary-soft:#fff7ed;
  --cat-primary-border:#fed7aa;
  --cat-text:#0f172a;
  --cat-muted:#64748b;
  --cat-border:#e2e8f0;
  --cat-white:#ffffff;
  --cat-shadow:0 18px 45px rgba(15,23,42,.08);
}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:'Inter',sans-serif;background:radial-gradient(circle at top left,rgba(245,158,11,.12),transparent 30rem),linear-gradient(180deg,#ffffff 0%,#f8fafc 48%,#eef2f7 100%);color:var(--cat-text);line-height:1.75;min-height:100vh;}
.topbar{width:100%;min-height:92px;padding:18px clamp(18px,5vw,58px);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.94);border-bottom:1px solid var(--cat-border);position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);}
.logo{color:var(--cat-primary);font-size:clamp(1.55rem,4vw,2.25rem);font-weight:800;letter-spacing:-.04em;}
.back-btn{min-width:118px;min-height:54px;padding:16px 24px;display:inline-flex;align-items:center;justify-content:center;border-radius:18px;background:var(--cat-primary-soft);color:#92400e;border:1px solid var(--cat-primary-border);font-weight:800;text-decoration:none !important;transition:transform .2s ease;}
.back-btn:hover{transform:translateY(-2px);}
.course-header{max-width:1180px;margin:0 auto;padding:76px clamp(22px,5vw,42px) 44px;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px;align-items:end;}
.course-info{max-width:850px;}
.course-badge,.lesson-number,.section-label{display:inline-flex;align-items:center;justify-content:center;background:var(--cat-primary-soft);border:1px solid var(--cat-primary-border);color:#b45309;border-radius:999px;padding:10px 18px;font-size:.82rem;line-height:1;font-weight:800;letter-spacing:.08em;text-transform:uppercase;}
.course-info h1{margin-top:26px;font-size:clamp(2.35rem,7vw,5.05rem);line-height:1.04;letter-spacing:-.07em;font-weight:800;}
.course-info p{margin-top:24px;color:var(--cat-muted);font-size:clamp(1.04rem,2.2vw,1.22rem);max-width:780px;}
.course-progress-box{background:rgba(255,255,255,.88);border:1px solid var(--cat-border);border-radius:28px;padding:28px;box-shadow:var(--cat-shadow);}
.progress-text{display:block;font-weight:700;color:#334155;margin-bottom:14px;}
.progress-bar{width:100%;height:12px;border-radius:999px;background:#e2e8f0;overflow:hidden;}
.progress-fill{height:100%;width:0%;border-radius:999px;background:linear-gradient(135deg,var(--cat-primary),#fbbf24);transition:width .45s ease;}
.progress-percent{display:block;margin-top:14px;color:#92400e;font-weight:800;}
.container{max-width:1180px;margin:0 auto;padding:0 clamp(22px,5vw,42px) 82px;}
.lesson-card,.intro-theory,.route-section,.scenario-section,.urgent-card,.check-section,.comparison-section,.kit-section,.case-card,.alarm-section{background:rgba(255,255,255,.94);border:1px solid var(--cat-border);border-radius:34px;padding:clamp(28px,5vw,52px);margin-bottom:36px;box-shadow:var(--cat-shadow);}
.lesson-top{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:30px;flex-wrap:wrap;}
.lesson-duration{color:#64748b;font-weight:800;}
.lesson-card h2,.intro-theory h2,.route-section h2,.scenario-section h2,.urgent-card h2,.check-section h2,.comparison-section h2,.kit-section h2,.case-card h2,.alarm-section h2{font-size:clamp(1.8rem,4vw,2.9rem);line-height:1.12;letter-spacing:-.05em;color:var(--cat-text);margin:18px 0 22px;}
.lesson-card p,.intro-theory p,.route-section p,.scenario-section p,.urgent-card p,.check-section p,.comparison-section p,.kit-section p,.case-card p,.alarm-section p{color:#475569;font-size:1.04rem;margin-top:18px;}
.objectives{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px;}
.objective{background:linear-gradient(180deg,#ffffff 0%,#fff7ed 100%);border:1px solid var(--cat-primary-border);border-radius:22px;padding:22px;color:#92400e;font-weight:800;line-height:1.45;}
.intro-theory,.route-section,.urgent-card,.check-section,.alarm-section{background:linear-gradient(135deg,#fff7ed 0%,#ffffff 76%);border-color:var(--cat-primary-border);}
.photo-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:0 0 36px;}
.photo-card{overflow:hidden;border-radius:28px;border:1px solid var(--cat-primary-border);background:#fff;box-shadow:var(--cat-shadow);}
.photo-card figure{aspect-ratio:4/3;overflow:hidden;background:#fff7ed;}
.photo-card img{width:100%;height:100%;object-fit:cover;display:block;}
.photo-copy{padding:24px;}
.photo-copy h3,.scenario-card h3,.check-grid h3,.comparison-col h3,.kit-grid h3{color:#92400e;font-size:1.12rem;line-height:1.3;margin-bottom:10px;}
.route-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;margin-top:28px;}
.route-grid article{border:1px solid var(--cat-primary-border);border-radius:22px;padding:20px;background:#fff;}
.route-grid strong{display:block;color:#92400e;font-size:1rem;margin-bottom:8px;}
.route-grid p{margin:0;font-size:.96rem;}
.scenario-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px;}
.scenario-card{background:#fff;border:1px solid var(--cat-primary-border);border-radius:22px;padding:24px;}
.scenario-card p{margin-top:12px;font-size:.98rem;}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px;}
.check-grid article,.kit-grid article{background:#fff;border:1px solid var(--cat-primary-border);border-radius:22px;padding:22px;}
.check-grid p,.kit-grid p{margin:0;font-size:.96rem;}
.comparison-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px;}
.comparison-col{border-radius:24px;padding:24px;}
.comparison-col.good{background:#ecfdf5;border:1px solid #bbf7d0;}
.comparison-col.bad{background:#fff7ed;border:1px solid var(--cat-primary-border);}
.comparison-col ul{padding-left:20px;color:#475569;display:grid;gap:10px;}
.kit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:28px;}
.alarm-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:28px;}
.alarm-grid article{background:#fff;border:1px solid var(--cat-primary-border);border-radius:20px;padding:18px;color:#92400e;font-weight:800;line-height:1.45;}
.lesson-navigation{display:flex;justify-content:center;margin-top:40px;}
.next-btn{min-height:58px;min-width:min(100%,340px);padding:16px 28px;display:inline-flex;align-items:center;justify-content:center;border-radius:20px;background:linear-gradient(135deg,var(--cat-primary),#f59e0b);color:#fff;font-weight:800;font-size:1rem;text-decoration:none !important;box-shadow:0 18px 32px rgba(245,158,11,.22);transition:transform .2s ease;}
.next-btn:hover{transform:translateY(-2px);}
@media(max-width:1100px){.photo-strip{grid-template-columns:repeat(2,minmax(0,1fr));}.route-grid{grid-template-columns:repeat(2,minmax(0,1fr));}.kit-grid{grid-template-columns:repeat(2,minmax(0,1fr));}.alarm-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:900px){.course-header{grid-template-columns:1fr;padding-top:52px;}.objectives,.scenario-grid,.check-grid,.comparison-grid{grid-template-columns:1fr;}}
@media(max-width:600px){.topbar{min-height:80px;}.back-btn{min-width:96px;min-height:48px;padding:14px 18px;border-radius:16px;}.course-header{padding-top:42px;}.lesson-card,.intro-theory,.route-section,.scenario-section,.urgent-card,.check-section,.comparison-section,.kit-section,.case-card,.alarm-section{border-radius:26px;margin-bottom:32px;}.photo-strip,.kit-grid,.route-grid,.alarm-grid{grid-template-columns:1fr;}.lesson-top{align-items:flex-start;}.next-btn{min-height:56px;min-width:min(100%,320px);font-size:.98rem;}}