/* MechJobs interview preparation navigation and cross-links */
.main-nav a.interview-highlight{
  background:transparent!important;
  border:0!important;
  border-radius:0!important;
  color:#8ed4df!important;
  font-weight:900;
  padding-inline:0!important;
  box-shadow:none!important;
}
.main-nav a.interview-highlight:hover{color:#c7f1f5!important;transform:none!important;background:transparent!important}
.main-nav a.interview-highlight::after{background:#57b9c7!important}
.main-nav a.interview-highlight.active{background:transparent!important;color:#8ed4df!important;border:0!important}
.main-nav a.interview-highlight.active::after{right:0!important;left:0!important;background:#57b9c7!important;height:3px!important}
.interview-promo-section{max-width:1180px;margin:26px auto;padding:0 24px}
.interview-promo-section.compact{margin-top:24px;margin-bottom:30px}
.interview-promo{display:flex;align-items:center;justify-content:space-between;gap:24px;background:#eef7f9;border:1px solid #c5e0e5;border-right:5px solid #2f8fa1;border-radius:16px;padding:24px 28px;box-shadow:0 7px 20px rgba(39,55,76,.06);color:inherit;text-decoration:none}
.interview-promo:hover{background:#e8f4f6;box-shadow:0 10px 25px rgba(39,55,76,.09);transform:translateY(-1px)}
.interview-promo h2{margin:3px 0 7px;color:#173f6b;font-size:clamp(1.3rem,2.6vw,1.85rem)}
.interview-promo p{margin:0;line-height:1.65;color:#40566c}
.promo-kicker{display:block;color:#277f91;font-weight:900}
.interview-promo-button{display:inline-flex;align-items:center;justify-content:center;flex:none;background:#173f6b;color:#fff!important;border-radius:9px;padding:11px 16px;font-weight:900;text-decoration:none}
.interview-promo:hover .interview-promo-button{background:#0d6f84}
.comfortable-card{padding-bottom:30px!important}.comfortable-card .check-list{margin-bottom:0}
.course-position{display:none!important}
.course-hero-actions{display:none!important}
.chapter-nav a.active{background:#dcecf5!important;color:#123f68!important;box-shadow:inset 0 -3px 0 #0b6d9c}
.qa-footer{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px;padding:14px 4px 5px;border-top:1px solid #d8e1ea;color:#40566c}
.search-row{display:flex;gap:9px}.search-row input{flex:1}.search-row button,#technical-clear{border:1px solid #bdcbd8;background:#fff;border-radius:10px;padding:0 16px;font:inherit;font-weight:700;cursor:pointer}
.search-help{margin:10px 0 5px;color:#53687d;line-height:1.55}
.technical-filter-buttons{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.technical-filter-buttons button{border:1px solid #bdcbd8;background:#fff;border-radius:999px;padding:8px 13px;font:inherit;cursor:pointer}.technical-filter-buttons button.active{background:#173f6b;color:#fff;border-color:#173f6b}
.result-count{margin:10px 0 0;color:#3e5268}.result-count strong{color:#173f6b}
.course-disclaimer{margin:34px 0 18px;padding:16px 18px;background:#f5f8fa;border:1px solid #d4e0e8;border-right:5px solid #607d91;border-radius:12px;line-height:1.65;color:#334b5f}
.course-bottom-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0 0}.course-bottom-nav a{display:flex;align-items:center;justify-content:center;text-align:center;min-height:48px;padding:10px;border:1px solid #cddbe7;background:#fff;border-radius:11px;color:#173f6b;font-weight:800}.course-bottom-nav .course-home-link{background:#edf5fa}
.mobile-course-bar{display:none}
.module-card{cursor:pointer;position:relative;min-height:170px}
.module-card>div{display:flex;flex-direction:column;min-height:100%;width:100%}
.module-open{display:inline-flex;width:max-content;margin-top:auto;padding-top:14px;color:#0b6d9c;font-weight:900}
.module-card:hover .module-open{text-decoration:underline}
@media(max-width:820px){.interview-promo-section{padding:0 14px}.interview-promo{align-items:flex-start;flex-direction:column;padding:21px 19px}.interview-promo-button{width:100%}.main-nav a.interview-highlight{color:#8ed4df!important}}
@media(max-width:720px){body.interview-page{padding-bottom:62px}.search-row{flex-direction:column}.search-row button{min-height:44px}.technical-filter-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.technical-filter-buttons button{padding:9px 7px}.course-bottom-nav{grid-template-columns:1fr}.mobile-course-bar{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;right:0;left:0;bottom:0;z-index:80;background:#173f6b;border-top:1px solid #42698e;padding:6px max(6px,env(safe-area-inset-right)) calc(6px + env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left));box-shadow:0 -4px 16px rgba(0,0,0,.2)}.mobile-course-bar a{display:flex;align-items:center;justify-content:center;min-height:40px;color:#fff;border-left:1px solid rgba(255,255,255,.18);font-weight:800;font-size:.86rem}.mobile-course-bar a:last-child{border-left:0}.chapter-nav-wrap{position:sticky;top:0;z-index:30}.mobile-chapter-nav>summary{background:#fff}.qa-footer{padding-bottom:10px}.interview-shell{padding-bottom:78px}.module-card{min-height:auto}}

@media(max-width:820px){.main-nav a.interview-highlight.active{color:#8ed4df!important;background:rgba(87,185,199,.08)!important}}


/* V7: five-item mobile navigation with previous/next and page map */
@media(max-width:720px){
  .mobile-course-bar{grid-template-columns:repeat(5,1fr)}
  .mobile-course-bar a,.mobile-course-bar span.disabled{font-size:.78rem;padding-inline:3px}
}


/* V10 — linear, unambiguous interview preparation architecture */
.course-step-nav{max-width:1180px;margin:0 auto;padding:12px 24px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;background:#fff;border-bottom:1px solid var(--i-line)}
.course-step-nav a{display:flex;align-items:center;justify-content:center;min-height:44px;padding:9px 10px;text-align:center;border:1px solid #d3e0e9;border-radius:10px;color:#385069;font-weight:850;background:#fff}
.course-step-nav a:hover{background:#f2f7fa}.course-step-nav a.active{background:#dceef5;border-color:#8fc5d4;color:#123f68;box-shadow:inset 0 -3px 0 #0b6d9c}
.clear-sequence{border-right:5px solid #2f8fa1}.sequence-list{display:grid;gap:11px;margin-top:20px}.sequence-list>a{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:14px;padding:16px 18px;border:1px solid var(--i-line);border-radius:14px;background:#f9fbfd;color:inherit}.sequence-list>a:hover{background:#f0f7fa}.sequence-list span,.type-number{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#173f6b;color:#fff;font-weight:900}.sequence-list h3{margin:0 0 3px;color:var(--i-navy)}.sequence-list p{margin:0;color:var(--i-muted)}
.question-type-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:22px}.question-type-grid article{border:1px solid var(--i-line);border-radius:16px;background:#f9fbfd;padding:21px}.question-type-grid h3{margin:12px 0 8px;color:var(--i-navy);font-size:1.28rem}.question-type-grid p{margin:0 0 15px;color:var(--i-muted)}.type-links{display:flex;flex-wrap:wrap;gap:8px}.type-links a{display:inline-flex;padding:8px 11px;border:1px solid #c8d9e5;border-radius:9px;background:#fff;color:var(--i-blue);font-weight:850}
.all-questions-search{padding:0!important;overflow:hidden}.all-questions-search>summary{cursor:pointer;list-style:none;padding:22px 28px;display:flex;align-items:center;justify-content:space-between;color:var(--i-navy)}.all-questions-search>summary::-webkit-details-marker{display:none}.all-questions-search>summary:after{content:'+';font-size:1.5rem;color:var(--i-blue)}.all-questions-search[open]>summary:after{content:'−'}.all-questions-search>summary span{display:flex;flex-direction:column;gap:3px}.all-questions-search>summary strong{font-size:1.3rem}.all-questions-search>summary small{color:var(--i-muted);font-size:.98rem}.all-questions-search .question-toolbar{border:0;border-top:1px solid var(--i-line);border-radius:0;margin:0}.all-questions-search .question-bank{padding:0 20px 22px}.embedded-search .search-row{display:flex;gap:9px}.embedded-search .search-row input{flex:1}.embedded-search .search-row button{min-width:80px}
.bank-row[hidden]{display:none!important}.empty-state[hidden]{display:none!important}
@media(max-width:820px){.question-type-grid{grid-template-columns:1fr}.course-step-nav{grid-template-columns:repeat(2,minmax(0,1fr));padding:10px 14px}.course-step-nav a{font-size:.95rem;min-height:42px}.all-questions-search>summary{padding:18px}.all-questions-search .question-bank{padding:0 12px 16px}}
@media(max-width:520px){.course-step-nav a{font-size:.9rem;padding:8px 5px}.sequence-list>a{padding:14px 12px}.question-type-grid article{padding:17px 15px}}



/* V12: three clear phases */
.course-step-nav.phase-nav{grid-template-columns:repeat(3,minmax(0,1fr));position:sticky;top:82px;z-index:18;box-shadow:0 3px 12px rgba(18,48,77,.05)}
.three-phase-list{grid-template-columns:1fr;gap:16px}.phase-card{border-right:4px solid #2f8fa1}.phase-card:nth-child(2){border-right-color:#176aa0}.phase-card:nth-child(3){border-right-color:#526b7e}
.simulation-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}.simulation-group{position:relative;background:#f8fbfd;border:1px solid var(--i-line);border-radius:16px;padding:22px}.simulation-group>.type-number{position:absolute;top:18px;left:18px}.simulation-group h3{margin:0 0 9px;padding-left:38px;color:var(--i-navy);font-size:1.3rem}.simulation-group p{color:var(--i-muted);line-height:1.65}.answer-example{background:#eef7f3;border-right:4px solid #21835c;border-radius:10px;padding:14px 16px;margin:10px 0 4px;line-height:1.7;font-weight:650}.answer-example.prominent{font-size:1.15rem;font-weight:850;color:var(--i-navy)}
.mobile-course-bar button{border:0;background:transparent;color:#fff;font:inherit;font-weight:800;cursor:pointer;border-left:1px solid rgba(255,255,255,.18)}
@media(max-width:820px){.course-step-nav.phase-nav{top:72px;grid-template-columns:repeat(3,minmax(0,1fr));padding:8px 8px;gap:5px}.course-step-nav.phase-nav a{font-size:.86rem;padding:7px 4px;min-height:42px}.simulation-groups{grid-template-columns:1fr}.interview-hero-inner{padding-top:30px}.three-phase-list .journey-card{grid-template-columns:auto 1fr}}
@media(max-width:480px){.course-step-nav.phase-nav a{font-size:.8rem}.mobile-course-bar{grid-template-columns:repeat(4,1fr)}}


/* V13: clear two-part architecture and one-level-up navigation */
.course-step-nav.phase-nav{grid-template-columns:repeat(2,minmax(0,1fr));}
.course-level-nav{max-width:1180px;margin:10px auto 0;padding:0 24px;display:flex;justify-content:flex-start;}
.course-level-nav a{display:inline-flex;align-items:center;min-height:40px;padding:8px 12px;border:1px solid #cddbe7;background:#fff;border-radius:10px;color:#0b6d9c;font-weight:850;}
.course-level-nav a:hover{background:#eef6fa;}
.two-phase-list{grid-template-columns:repeat(2,minmax(0,1fr));}
.clarification-note{margin-top:16px;padding:13px 15px;background:#eef6fa;border-right:4px solid #0b6d9c;border-radius:10px;color:#31485f;}
.technical-next-steps .three-grid>div{display:flex;flex-direction:column;}
.technical-next-steps .text-link{margin-top:auto;padding-top:8px;}
@media(max-width:820px){.course-step-nav.phase-nav{grid-template-columns:repeat(2,minmax(0,1fr));}.course-level-nav{padding:0 14px;margin-top:8px}.two-phase-list{grid-template-columns:1fr}}
@media(max-width:520px){.course-step-nav.phase-nav a{font-size:.86rem}.course-level-nav a{width:100%;justify-content:center}.mobile-course-bar a,.mobile-course-bar button{font-size:.78rem;padding-inline:2px}}


/* V14 — four-step course architecture, mobile-first navigation and role SEO pages */
.course-progress-nav{grid-template-columns:repeat(4,minmax(0,1fr))!important;position:sticky;top:82px;z-index:24;box-shadow:0 3px 12px rgba(18,48,77,.06)}
.course-progress-nav a{gap:8px;line-height:1.25}
.course-step-number{display:grid;place-items:center;width:26px;height:26px;flex:none;border-radius:50%;background:#e5eef4;color:#173f6b;font-size:.86rem;font-weight:900}
.course-progress-nav a.active .course-step-number{background:#173f6b;color:#fff}
.mobile-course-menu{display:none}
.course-level-nav{gap:9px;flex-wrap:wrap}
.course-level-return{display:flex;justify-content:center;margin:28px 0 10px}
.course-level-return a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 16px;border:1px solid #cddbe7;background:#eef6fa;border-radius:10px;color:#0b6d9c;font-weight:900}
.four-step-journey{grid-template-columns:repeat(2,minmax(0,1fr))}
.four-step-journey .journey-card{height:100%}
.role-entry-section{border-right:5px solid #2f8fa1}.role-shortcuts{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.role-shortcuts a{display:inline-flex;padding:10px 14px;border:1px solid #c9d9e5;border-radius:999px;background:#f8fbfd;color:#0b6d9c;font-weight:900}
.technical-topic-map{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0}.technical-topic-map a{display:flex;align-items:center;justify-content:center;text-align:center;min-height:58px;padding:10px;border:1px solid #cbdce7;border-radius:12px;background:#f8fbfd;color:#173f6b;font-weight:850}.technical-support-links{display:flex;flex-wrap:wrap;gap:9px}.technical-support-links a,.primary-inline-link{display:inline-flex;padding:9px 13px;border-radius:10px;background:#eaf4f8;color:#0b6d9c;font-weight:900}.exercise-jump{margin-top:14px}.exercise-jump a{font-weight:900;color:#0b6d9c}
.role-path-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin-top:22px}.role-path-card{display:block;border:1px solid var(--i-line);border-radius:15px;background:#f8fbfd;padding:20px;color:inherit}.role-path-card:hover{background:#eef6fa;box-shadow:0 8px 20px rgba(23,63,107,.08)}.role-path-card h2{font-size:1.25rem;margin:0 0 7px;color:var(--i-navy)}.role-path-card p{margin:0 0 12px;color:var(--i-muted)}.role-path-card span{color:var(--i-blue);font-weight:900}.single-role-block{margin-top:0}.role-related-links a{color:#0b6d9c;font-weight:900}
.after-interview-section{border-right:5px solid #21835c}.message-template{margin-top:16px;background:#f4faf7}
.page-jump-nav{position:fixed;left:18px;bottom:88px;z-index:76;display:grid;gap:7px}.page-jump-nav a{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid #c8d7e3;box-shadow:0 4px 14px rgba(23,63,107,.18);color:#173f6b;font-size:1.25rem;font-weight:900}
@media(max-width:900px){.technical-topic-map{grid-template-columns:repeat(2,minmax(0,1fr))}.four-step-journey{grid-template-columns:1fr}.role-path-grid{grid-template-columns:1fr}}
@media(max-width:720px){
 .course-progress-nav{display:none!important}.mobile-course-menu{display:block;position:sticky;top:72px;z-index:25;margin:0;background:#fff;border-bottom:1px solid #d5e1e9;box-shadow:0 3px 12px rgba(18,48,77,.07)}
 .mobile-course-menu>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 14px;color:#173f6b}.mobile-course-menu>summary::-webkit-details-marker{display:none}.mobile-course-menu>summary:after{content:'▾';font-size:1rem}.mobile-course-menu[open]>summary:after{content:'▴'}.mobile-course-menu>summary span{font-size:.82rem;color:#60758a}.mobile-course-menu>summary strong{font-size:.95rem;margin-inline-start:auto}
 .mobile-course-menu nav{display:grid;grid-template-columns:1fr;background:#fff;padding:0 10px 10px;max-height:65vh;overflow:auto}.mobile-course-menu nav a{padding:11px 12px;border-top:1px solid #e1e8ee;color:#334e67;font-weight:800}.mobile-course-menu nav a.active{background:#eaf4f8;color:#0b6d9c;border-radius:8px}
 .course-level-nav{padding:0 12px}.course-level-nav a{flex:1;min-width:140px;justify-content:center;text-align:center}.course-bottom-nav{display:grid;grid-template-columns:1fr}.mobile-course-bar{grid-template-columns:repeat(3,1fr)!important}.mobile-course-bar a,.mobile-course-bar span.disabled{font-size:.82rem}.page-jump-nav{left:10px;bottom:72px}.page-jump-nav a{width:38px;height:38px}.technical-topic-map{grid-template-columns:1fr}.technical-support-links{display:grid}.technical-support-links a{justify-content:center}.role-shortcuts{display:grid}.role-shortcuts a{border-radius:10px;justify-content:center}.interview-hero h1{font-size:clamp(1.85rem,8vw,2.5rem)}
}

/* V14 root page navigation refinement */
.root-course-actions{display:flex;justify-content:center;margin-top:26px}.root-course-actions a{max-width:520px;width:100%;justify-content:center;text-align:center}.root-mobile-course-bar{grid-template-columns:repeat(3,1fr)!important}


/* V15 — clearer technical grouping and reliable question-bank filters */
.technical-question-group{display:grid;gap:12px;margin:0 0 28px;padding:0}
.technical-question-group[hidden]{display:none!important}
.technical-group-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px;background:#eaf4f9;border-right:4px solid #1680a6;border-radius:12px}
.technical-group-heading h2{margin:0;font-size:1.28rem;color:#113f70}
.technical-group-count{white-space:nowrap;font-weight:700;color:#43627e;font-size:.94rem}
.question-bank-standalone .filter-buttons{align-items:stretch}
.question-bank-standalone .filter-buttons button{line-height:1.35;min-height:46px}
@media (max-width:720px){
  .technical-question-group{margin-bottom:22px;gap:10px}
  .technical-group-heading{padding:12px 14px;align-items:flex-start}
  .technical-group-heading h2{font-size:1.08rem}
  .technical-group-count{font-size:.82rem;margin-top:2px}
  .question-bank-standalone .filter-buttons{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .question-bank-standalone .filter-buttons button{width:100%;padding:10px 8px;font-size:.9rem}
}
@media (max-width:430px){
  .question-bank-standalone .filter-buttons{grid-template-columns:1fr}
}


/* V16 — global question index across all interview pages */
.bank-source{font-size:.88rem;line-height:1.45}
.question-bank-standalone .result-count{margin-bottom:0}
@media(max-width:720px){
  .bank-row{gap:10px;padding:14px}
  .bank-row strong{font-size:1rem;line-height:1.45}
  .bank-source{font-size:.82rem}
  .bank-row>a{align-self:flex-start}
}


/* V17 — one global search, one results page */
.global-question-search-entry h2,
.technical-topic-nav h2{margin:0 0 10px;color:#123f72}
.global-search-explainer{margin:0 0 18px;line-height:1.7}
.global-search-form label{display:block;font-weight:700;margin-bottom:9px;color:#173b64}
.global-search-filter-links,
.technical-topic-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.global-search-filter-links a,
.technical-topic-links a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:8px 14px;border:1px solid #bfd2e5;border-radius:999px;background:#fff;color:#066a9f;font-weight:700;text-decoration:none}
.global-search-filter-links a:hover,
.global-search-filter-links a:focus-visible,
.technical-topic-links a:hover,
.technical-topic-links a:focus-visible{background:#eaf6fb;border-color:#58a8cc;outline:none}
.technical-topic-nav{margin:26px 0 22px;padding:22px;border:1px solid #cfdeeb;border-radius:18px;background:#fff}
.technical-topic-nav p{margin:0;line-height:1.65}
.technical-question-group{scroll-margin-top:150px}
@media(max-width:720px){
  .global-search-filter-links,
  .technical-topic-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .global-search-filter-links a,
  .technical-topic-links a{min-height:44px;padding:8px 10px;font-size:.94rem;text-align:center}
  .technical-topic-nav{padding:17px;margin:20px 0}
}
@media(max-width:430px){
  .global-search-filter-links,
  .technical-topic-links{grid-template-columns:1fr}
}