:root{--navy-950:#03142d;--navy-900:#061a37;--navy-850:#0a2244;--ink:#071b3e;--muted:#5f6f86;--line:#d9e2ee;--surface:#fff;--surface-soft:#f5f8fc;--blue:#0a5cff;--blue2:#2f78ff;--blue-soft:#eaf2ff;--success:#177a4c;--danger:#b42318;--shadow:0 22px 60px rgba(2,19,45,.22);--radius-xl:22px;--shell-max:1440px}
*{box-sizing:border-box}html{background:var(--navy-950)}body{margin:0;min-width:320px;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:radial-gradient(circle at 85% 0%,rgba(27,99,212,.22),transparent 38%),linear-gradient(145deg,var(--navy-950),var(--navy-900) 60%,#071d3d)}button,textarea,input{font:inherit}button{cursor:pointer}button:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid rgba(10,92,255,.32);outline-offset:2px}.hidden{display:none!important}.app-shell{width:min(100%,var(--shell-max));min-height:100vh;margin:auto;padding:28px}.app-header{min-height:84px;display:grid;grid-template-columns:minmax(280px,1fr) auto minmax(180px,1fr);align-items:center;gap:26px;color:#fff}.brand{appearance:none;border:0;background:transparent;color:inherit;padding:0;display:inline-flex;align-items:center;gap:16px;text-align:left;justify-self:start}.brand-mark{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;font-size:28px;color:#fff;background:linear-gradient(145deg,#1766ff,#7f90ff);box-shadow:inset 0 1px rgba(255,255,255,.38),0 10px 26px rgba(0,73,202,.28)}.brand-copy{display:grid;gap:2px}.master-brand{font-size:.77rem;letter-spacing:.25em;font-weight:800}.product-name{font-size:clamp(1.35rem,2.1vw,1.9rem);font-weight:780;letter-spacing:-.02em}.primary-nav{display:grid;grid-template-columns:repeat(3,minmax(138px,1fr));gap:10px}.nav-item{border:1px solid transparent;border-radius:11px;background:transparent;color:rgba(255,255,255,.88);min-height:48px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:650}.nav-item:hover{background:rgba(255,255,255,.06)}.nav-item.active{background:rgba(255,255,255,.11);border-color:rgba(255,255,255,.06);color:#fff}.learner-chip{justify-self:end;display:inline-flex;align-items:center;gap:10px;color:#fff}.learner-avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.14);font-weight:800}.learner-name{font-weight:650;font-size:.95rem}.app-main{min-height:calc(100vh - 142px)}
.lesson-layout{display:grid;grid-template-columns:minmax(420px,.92fr) minmax(540px,1.08fr);gap:16px;align-items:stretch}.workplace-panel,.lesson-panel,.dashboard-panel,.content-panel{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow)}.workplace-panel{min-height:710px;background:#0d294d}.workplace-panel img{display:block;width:100%;height:100%;object-fit:cover;object-position:center}.lesson-panel{background:var(--surface);padding:clamp(24px,3vw,34px);display:flex;flex-direction:column}.lesson-topline{display:flex;align-items:center;justify-content:space-between;gap:20px}.lesson-topline>div:first-child{display:flex;align-items:center;gap:10px}.lesson-back{border:0;background:none;padding:0;color:var(--ink);font-weight:780}.time-label{font-size:.78rem;color:var(--muted);white-space:nowrap}.progress-steps{display:grid;grid-template-columns:repeat(6,minmax(25px,1fr));gap:7px;width:min(330px,46%)}.progress-step{height:5px;border-radius:99px;background:#dce3ec}.progress-step.done,.progress-step.current{background:var(--blue)}.lesson-title{margin:16px 0;font-size:clamp(2rem,3vw,2.45rem);line-height:1.06;letter-spacing:-.035em}.concept-toggle{width:100%;min-height:54px;border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:0 16px;display:flex;justify-content:space-between;align-items:center;font-weight:760}.concept-toggle .plus{font-size:1.8rem;color:var(--blue);font-weight:400;transition:transform .2s}.concept-toggle[aria-expanded=true] .plus{transform:rotate(45deg)}.concept-body{padding:15px 16px 4px;color:#33445b;line-height:1.58;font-size:.96rem}.mobile-workplace{display:none;margin-top:16px;border-radius:14px;overflow:hidden;background:#e9eef6}.mobile-workplace img{display:block;width:100%;aspect-ratio:1.694/1;object-fit:cover}.lesson-section{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:22px 0 5px}.lesson-section h2{margin:2px 0 4px;font-size:1.03rem}.lesson-section p{margin:0;color:#263b59;line-height:1.55}.section-icon{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:18px;background:linear-gradient(145deg,#216dff,#745fff)}.lesson-section.exercise .section-icon{background:var(--blue)}.exercise-card{border:1px solid var(--line);border-radius:13px;padding:18px;margin-top:18px}.exercise-card .lesson-section{padding:0 0 14px}.response-box{width:100%;min-height:104px;resize:vertical;border:1.5px solid #7aa5ff;border-radius:10px;padding:14px;color:var(--ink);background:#fff}.response-meta{margin:8px 0 0;display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.82rem}.primary-action,.secondary-action,.footer-action{width:100%;border-radius:9px;min-height:50px;border:0;font-weight:800}.primary-action{margin-top:14px;background:linear-gradient(90deg,#0a5cff,#0754e8);color:#fff}.secondary-action{margin-top:14px;background:#fff;color:var(--blue);border:1.5px solid var(--blue)}.footer-action{margin-top:14px;background:#91b3ed;color:#fff}.footer-action:not(:disabled){background:var(--blue)}button:disabled{cursor:not-allowed;opacity:.62}.check-card{border:1px solid var(--line);border-radius:13px;padding:16px;margin-top:14px}.check-card.locked{color:#5f6f86;background:#fcfdff}.check-header{display:grid;grid-template-columns:42px 1fr auto;gap:12px;align-items:center}.check-badge{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#3b82f6,#6a78df);font-weight:800}.check-header h2{margin:0 0 2px;font-size:.96rem}.check-header p{margin:0;font-size:.86rem;color:var(--muted)}.lock-icon{color:var(--blue2);font-size:1.2rem}.check-options{margin-top:14px;display:grid;gap:9px}.check-option{border:1px solid var(--line);border-radius:10px;padding:12px;background:#fff;color:var(--ink);text-align:left}.check-option.selected{border-color:var(--blue);background:var(--blue-soft)}.feedback{margin-top:10px;padding:10px 12px;border-radius:9px;font-size:.9rem;font-weight:650}.feedback.good{color:var(--success);background:#eaf8f0}.feedback.bad{color:var(--danger);background:#fff0ef}
.dashboard-panel,.content-panel{background:var(--surface-soft);padding:clamp(22px,3vw,34px)}.page-intro{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:22px}.page-intro h1{margin:3px 0 5px;font-size:clamp(1.9rem,3vw,2.6rem);letter-spacing:-.035em}.eyebrow{margin:0;text-transform:uppercase;letter-spacing:.15em;font-size:.72rem;font-weight:850;color:var(--blue)}.page-intro p:last-child{margin:0;color:var(--muted);max-width:680px}.summary-stack{min-width:175px}.summary-pill{white-space:nowrap;border-radius:999px;background:#fff;border:1px solid var(--line);padding:9px 13px;color:var(--muted);font-weight:650;text-align:center}.overall-progress{height:7px;border-radius:99px;background:#dce5f0;margin-top:8px;overflow:hidden}.overall-progress span{display:block;height:100%;border-radius:inherit;background:var(--blue)}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.module-card{border:1px solid var(--line);background:#fff;border-radius:15px;padding:18px;min-height:215px;display:flex;flex-direction:column;text-align:left;color:var(--ink);transition:.18s}.module-card:hover:not(:disabled){border-color:#9ebeff;transform:translateY(-1px)}.module-card.complete{border-color:#b9dccb}.module-card-top{display:flex;justify-content:space-between;gap:10px}.module-number{color:var(--blue);font-weight:800;font-size:.82rem}.module-status{font-size:.78rem;color:var(--muted);font-weight:750}.module-status.done{color:var(--success)}.module-card h2{margin:9px 0 6px;font-size:1.1rem;line-height:1.22}.module-card p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.45}.module-progress{margin-top:auto;padding-top:18px}.progress-track{height:7px;border-radius:999px;background:#e4eaf2;overflow:hidden}.progress-fill{display:block;height:100%;background:var(--blue);border-radius:inherit}.progress-label{display:flex;justify-content:space-between;margin-top:7px;color:var(--muted);font-size:.78rem}.module-next{margin-top:12px;color:var(--blue);font-size:.8rem;font-weight:750}.back-link{border:0;background:transparent;color:var(--blue);font-weight:750;padding:0 0 16px}.module-intro{margin-bottom:18px}.lesson-list{display:grid;gap:9px}.lesson-row{width:100%;display:grid;grid-template-columns:42px 1fr auto 18px;align-items:center;gap:12px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:14px;text-align:left;color:var(--ink)}.lesson-row:hover:not(:disabled){border-color:#9ebeff}.lesson-row.complete{border-color:#bfddcc}.lesson-row.current{box-shadow:0 0 0 2px rgba(10,92,255,.1)}.lesson-index{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-weight:800}.lesson-row.complete .lesson-index{background:#eaf8f0;color:var(--success)}.lesson-row-copy{display:grid;gap:3px}.lesson-row-copy strong{font-size:.96rem}.lesson-row-copy small{font-size:.78rem;color:var(--muted)}.lesson-row-status{font-size:.78rem;color:var(--muted);font-weight:700}.lesson-chevron{color:var(--blue);font-size:1.3rem}.empty-state{min-height:360px;display:grid;place-items:center;text-align:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px}.empty-icon{width:66px;height:66px;border-radius:20px;margin:0 auto 14px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-size:30px}.empty-state h2{margin:0 0 8px}.empty-state p{margin:0;color:var(--muted);max-width:570px}.empty-action{margin-top:18px;border:0;border-radius:9px;padding:12px 18px;background:var(--blue);color:#fff;font-weight:800}.tool-search-wrap{margin-bottom:14px}.tool-search{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 14px;background:#fff}.tool-list,.certificate-list{display:grid;gap:12px}.tool-card,.certificate-card{border:1px solid var(--line);border-radius:14px;background:#fff;padding:18px}.tool-card-head{display:flex;justify-content:space-between;gap:16px}.tool-card h2,.certificate-card h2{margin:4px 0 7px;font-size:1rem}.tool-card p,.certificate-card p{margin:0;color:var(--muted)}.tool-actions{display:flex;gap:8px}.tool-actions button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 11px;font-weight:700;color:var(--ink)}.tool-actions .text-danger{color:var(--danger)}.tool-output{white-space:pre-wrap;margin-top:12px;padding:12px;border-radius:10px;background:#f3f6fa;color:#253b58;font-size:.9rem;line-height:1.5}.certificate-card{display:grid;grid-template-columns:58px 1fr;gap:14px;align-items:start}.certificate-mark{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-size:25px}.certificate-card small{display:block;margin-top:10px;color:var(--muted)}.academy-cert{border-color:#9ebeff;box-shadow:inset 4px 0 0 var(--blue)}
.dev-backdrop{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px;background:rgba(0,10,27,.72);backdrop-filter:blur(5px)}.dev-console{width:min(620px,100%);max-height:88vh;overflow:auto;border-radius:18px;background:#fff;padding:24px;box-shadow:0 30px 90px rgba(0,0,0,.35)}.dev-header{display:flex;justify-content:space-between;align-items:start;gap:16px}.dev-header h2{margin:3px 0 0}.icon-button{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:1.5rem}.dev-copy{color:var(--muted);line-height:1.5}.dev-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.dev-grid button{min-height:46px;border:1px solid var(--line);border-radius:10px;background:var(--surface-soft);color:var(--ink);font-weight:700}.dev-grid .danger{color:var(--danger);background:#fff0ef}.dev-status{margin-top:14px;border-radius:10px;background:#eef4ff;color:#2b4771;padding:11px 12px;font-size:.88rem}
@media(max-width:1120px){.app-header{grid-template-columns:1fr auto}.learner-chip{display:none}.lesson-layout{grid-template-columns:minmax(340px,.85fr) minmax(500px,1.15fr)}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.app-shell{padding:20px 18px}.app-header{display:flex;flex-direction:column;align-items:stretch;gap:16px;padding-bottom:22px}.brand{align-self:flex-start}.primary-nav{grid-template-columns:repeat(3,1fr)}.nav-item{min-width:0;padding:0 10px}.lesson-layout{display:block}.workplace-panel{display:none}.lesson-panel{min-height:0}.mobile-workplace{display:block}.progress-steps{width:min(320px,48%)}.module-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.app-shell{padding:16px 14px calc(18px + env(safe-area-inset-bottom))}.brand-mark{width:48px;height:48px;border-radius:14px;font-size:25px}.brand{gap:13px}.master-brand{font-size:.7rem}.product-name{font-size:1.45rem}.primary-nav{gap:7px}.nav-item{min-height:52px;border-radius:10px;font-size:.9rem}.lesson-panel{padding:22px 18px 20px}.lesson-topline{align-items:start;flex-direction:column;gap:11px}.lesson-topline>div:first-child{width:100%;justify-content:space-between}.progress-steps{width:100%}.lesson-title{font-size:2rem;margin-top:14px}.concept-toggle{text-align:left;gap:12px}.mobile-workplace{margin:16px 0 4px;border-radius:13px}.scenario-section{padding-top:18px}.lesson-section{grid-template-columns:46px 1fr;gap:12px}.section-icon{width:42px;height:42px}.exercise-card{padding:14px;margin-top:14px}.response-meta{align-items:start;flex-direction:column;gap:3px}.check-header{grid-template-columns:40px 1fr auto;gap:10px}.dashboard-panel,.content-panel{padding:20px 16px}.page-intro{flex-direction:column;gap:14px}.summary-stack{width:100%}.module-grid{grid-template-columns:1fr}.lesson-row{grid-template-columns:38px 1fr 16px;gap:10px;padding:13px 12px}.lesson-row-status{display:none}.lesson-row-copy small{font-size:.73rem}.tool-card-head{flex-direction:column}.tool-actions{width:100%}.tool-actions button{flex:1}.certificate-card{grid-template-columns:48px 1fr}.certificate-mark{width:46px;height:46px;border-radius:13px}.dev-grid{grid-template-columns:1fr}}
@media(max-width:410px){.product-name{font-size:1.28rem}.master-brand{font-size:.65rem}.nav-item{font-size:.82rem}.lesson-panel{padding-left:14px;padding-right:14px}.lesson-title{font-size:1.82rem}}