.jd-hero{padding:140px 0 48px;background:var(--gray-50);border-bottom:1px solid var(--gray-200)}.jd-header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.jd-header h1{font-size:clamp(2rem,3.5vw,2.5rem);color:var(--dark-blue);margin:8px 0 4px;letter-spacing:-.02em}.jd-subtitle{font-size:1.125rem;font-weight:500;color:var(--gray-500);margin-top:4px}.jd-location-row{display:flex;align-items:center;gap:20px;margin-top:8px}.jd-location-item{display:inline-flex;align-items:center;gap:6px;font-size:1rem;font-weight:500;color:var(--blue)}.jd-location-item svg{flex-shrink:0}.jd-badge{display:inline-block;padding:4px 14px;background:var(--light-blue);color:var(--blue);font-size:.75rem;font-weight:600;border-radius:20px;text-transform:uppercase;letter-spacing:.5px}.jd-meta{text-align:right;font-size:1rem;color:var(--gray-500);line-height:1.8;flex-shrink:0}.jd-meta a{color:var(--blue);text-decoration:none;font-weight:600}.jd-meta a:hover{text-decoration:underline}.jd-content{padding:48px 0 80px}.jd-body{max-width:880px;margin:0 auto}.jd-body h2{font-size:1.375rem;color:var(--dark-blue);margin:40px 0 16px;padding-bottom:8px;border-bottom:1px solid var(--gray-200)}.jd-body h3{font-size:1.125rem;color:var(--blue);margin:24px 0 10px}.jd-body p{font-size:1.0625rem;line-height:1.7;color:var(--gray-700);margin:12px 0}.jd-body ul{list-style:none;margin:12px 0;padding:0}.jd-body ul li{position:relative;padding:6px 0 6px 22px;font-size:1.0625rem;line-height:1.6;color:var(--gray-700)}.jd-body ul li:before{content:"";position:absolute;left:6px;top:14px;width:6px;height:6px;background:var(--blue);border-radius:50%}.jd-body pre{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:8px;padding:20px 24px;overflow-x:auto;font-family:SF Mono,Menlo,Consolas,monospace;font-size:.875rem;line-height:1.5;margin:16px 0}.jd-body a{color:var(--blue);text-decoration:none;font-weight:500}.jd-body a:hover{text-decoration:underline}.stack-list{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}.stack-badge{display:inline-block;padding:6px 16px;background:var(--light-blue);color:var(--dark-blue);font-size:1rem;font-weight:500;border-radius:20px}.jd-guide-link{margin-top:40px;padding:20px 24px;background:var(--light-blue);border-radius:8px;text-align:center}.jd-guide-link p{margin:0;font-size:.9375rem;color:var(--dark-blue)}.jd-footer-note{margin-top:48px;padding-top:24px;border-top:1px solid var(--gray-200);text-align:center}.jd-footer-note p{font-size:.8125rem;color:var(--gray-400)}.jd-footer-note a{color:var(--blue);text-decoration:none;font-weight:600}.level-cards{display:flex;flex-direction:column;gap:12px;margin:24px 0 16px}.level-card{display:flex;align-items:stretch;gap:0;background:var(--white);border:1px solid var(--gray-200);border-radius:12px;text-decoration:none!important;color:inherit;transition:all .2s ease;overflow:hidden}.level-card:hover{border-color:var(--blue);box-shadow:0 4px 20px #0f64ff1a;transform:translateY(-1px);text-decoration:none!important}.level-card:hover .level-card__cta{color:var(--blue)}.level-card__rank{display:flex;align-items:center;justify-content:center;min-width:64px;padding:0 8px;font-size:1.125rem;font-weight:700;letter-spacing:-.01em;color:var(--white);flex-shrink:0}.level-card--foundation .level-card__rank{background:#7cb9ff}.level-card--proven .level-card__rank{background:var(--blue)}.level-card--authority .level-card__rank{background:#2e4797}.level-card--elite .level-card__rank{background:var(--dark-blue)}.level-card--legendary .level-card__rank{background:#ffcb05;color:var(--dark-blue)}.level-card__content{flex:1;padding:18px 24px;min-width:0}.level-card__title{font-size:1.125rem;font-weight:600;color:var(--dark-blue);margin:0 0 4px}.level-card__desc{font-size:.9375rem;line-height:1.5;color:var(--gray-600);margin:0 0 10px}.level-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px}.level-card__time{font-size:.8125rem;font-weight:500;color:var(--gray-400)}.level-card__cta{font-size:.875rem;font-weight:600;color:var(--gray-400);white-space:nowrap;transition:color .2s}@media(max-width:640px){.level-card__rank{min-width:48px;font-size:.9375rem}.level-card__content{padding:14px 16px}.level-card__title{font-size:1rem}.level-card__desc{font-size:.875rem}}.jd-back-link{color:var(--blue);text-decoration:none;font-weight:500}.jd-back-link:hover{text-decoration:underline}.jd-level-nav{margin-top:40px;padding:20px 24px;background:var(--light-blue);border-radius:8px;text-align:center}.jd-level-nav a{color:var(--blue);text-decoration:none;font-weight:600;font-size:.9375rem}.jd-level-nav a:hover{text-decoration:underline}@media(max-width:640px){.jd-header{flex-direction:column}.jd-meta{text-align:left}}