:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-synthesis:none;--navy-950:#071522;--navy-900:#0c2034;--navy-800:#15344d;--ink:#102536;--muted:#5d7080;--line:#cbd9de;--paper:#f7fbfa;--white:#fff;--cyan:#32d6c5;--cyan-dark:#007e74;--yellow:#ffd66b;--red:#c8324b;--green:#13805f;--shadow:0 24px 64px #02162333;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft JhengHei,sans-serif}*{box-sizing:border-box}html{background:var(--navy-950);min-width:320px}body{min-height:100vh;color:var(--ink);background:linear-gradient(#32d6c50b 1px, transparent 1px), linear-gradient(90deg, #32d6c50b 1px, transparent 1px), radial-gradient(circle at 80% 8%, #32d6c52e, transparent 28rem), var(--navy-950);background-size:32px 32px,32px 32px,auto,auto;margin:0}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.58}:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.topbar{width:min(1180px,100% - 40px);min-height:88px;color:var(--white);justify-content:space-between;align-items:center;gap:24px;margin:0 auto;display:flex}.brand{color:inherit;align-items:center;gap:12px;text-decoration:none;display:inline-flex}.brand-mark{aspect-ratio:1;border:2px solid var(--cyan);width:44px;color:var(--cyan);letter-spacing:-.04em;border-radius:12px 12px 12px 3px;place-items:center;font-weight:900;display:grid}.teacher-mark{border-color:var(--yellow);color:var(--yellow)}.brand strong,.brand small{display:block}.brand strong{font-size:1rem;line-height:1.25}.brand small{color:#a9c0ce;margin-top:2px;font-size:.75rem}.quiet-link,.text-link{color:#cfe2e8;text-underline-offset:4px;font-size:.9rem}.quiet-link:hover,.text-link:hover{color:var(--white)}.student-shell,.teacher-shell{width:min(1180px,100% - 40px);margin:22px auto 0}.student-shell{grid-template-columns:minmax(0,1.35fr) minmax(320px,.65fr);align-items:stretch;gap:20px;display:grid}.panel{background:var(--paper);box-shadow:var(--shadow);border:1px solid #ffffff29;border-radius:22px}.login-panel{padding:clamp(28px,5vw,58px);position:relative;overflow:hidden}.login-panel:before{content:"";background:var(--cyan);width:8px;position:absolute;inset:0 auto 0 0}.eyebrow{color:var(--cyan-dark);letter-spacing:.12em;justify-content:space-between;align-items:center;gap:16px;font-size:.78rem;font-weight:900;display:flex}.connection{color:var(--muted);letter-spacing:0;padding-left:15px;font-weight:700;position:relative}.connection:before{content:"";background:#8c9aa4;border-radius:50%;width:8px;height:8px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.connection[data-state=online]:before{background:var(--green)}.connection[data-state=error]:before{background:var(--red)}h1,h2,p{margin-top:0}.login-panel h1,.dashboard-header h1{color:var(--navy-900);letter-spacing:-.045em;margin:18px 0 10px;font-size:clamp(2rem,4vw,3.55rem);line-height:1.08}.lead{color:var(--muted);margin-bottom:34px;font-size:1.05rem;line-height:1.7}.field-grid{gap:16px;margin-bottom:18px;display:grid}.two-columns{grid-template-columns:repeat(2,minmax(0,1fr))}.field{gap:8px;display:grid}.field>span{color:#314a5c;font-size:.9rem;font-weight:800}.field input,.field select{border:1.5px solid var(--line);width:100%;min-height:54px;color:var(--navy-900);background:var(--white);border-radius:12px;padding:12px 15px;font-size:1.05rem;transition:border-color .16s,box-shadow .16s}.field input:hover,.field select:hover{border-color:#89a6ae}.field input:focus,.field select:focus{border-color:var(--cyan-dark);outline:0;box-shadow:0 0 0 4px #32d6c52e}.code-input{letter-spacing:.28em;font-weight:900}.identity-preview{background:#eff7f5;border:1px dashed #89a6ae;border-radius:12px;justify-content:space-between;align-items:center;gap:20px;margin:26px 0 18px;padding:14px 16px;display:flex}.identity-preview span{color:var(--muted);font-size:.85rem}.identity-preview strong{overflow-wrap:anywhere;color:var(--navy-900);font-family:ui-monospace,Cascadia Mono,monospace;font-size:1.1rem}.primary-button,.secondary-button,.quiet-button,.danger-button,.google-button{border-radius:12px;min-height:50px;padding:12px 18px;font-weight:850;transition:transform .14s,box-shadow .14s,background .14s}.primary-button{width:100%;color:var(--navy-950);background:var(--cyan);border:0;justify-content:space-between;align-items:center;gap:14px;display:flex;box-shadow:0 8px #07978a}.primary-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px #07978a}.primary-button:active:not(:disabled){transform:translateY(4px);box-shadow:0 4px #07978a}.secondary-button,.quiet-button{background:var(--white);color:var(--navy-900);border:1.5px solid #9db3bc}.secondary-button:hover,.quiet-button:hover{background:#edf4f4}.danger-button{background:var(--red);color:var(--white);border:0}.message{border-left:4px solid var(--red);color:#742033;background:#ffedf0;border-radius:8px;margin:14px 0;padding:13px 15px;line-height:1.55}.message[data-kind=success]{border-color:var(--green);color:#075d44;background:#e7f7f0}.course-panel{color:var(--white);background:var(--navy-800);box-shadow:var(--shadow);padding:clamp(28px,4vw,42px)}.course-index{color:var(--cyan);letter-spacing:.16em;font-weight:900}.course-panel h2{margin:12px 0 28px;font-size:1.65rem}.lesson-list{gap:0;margin:0;padding:0;list-style:none;display:grid}.lesson-list li{border-top:1px solid #ffffff26;grid-template-columns:42px 1fr;gap:14px;padding:18px 0;display:grid}.lesson-list li>span{color:var(--yellow);font-family:ui-monospace,monospace;font-weight:900}.lesson-list strong,.lesson-list small{display:block}.lesson-list strong{font-size:1rem}.lesson-list small{color:#b9ced7;margin-top:6px;line-height:1.55}.ready-note{color:var(--navy-900);background:var(--yellow);border-radius:14px;margin-top:28px;padding:20px}.ready-note ul{margin:10px 0 0;padding-left:1.2em;line-height:1.8}.ready-note li{padding-left:4px}.success-card{background:#ebfaf5;border:1px solid #96d9c5;border-radius:16px;padding:24px}.success-label,.eyebrow-text{color:var(--cyan-dark);letter-spacing:.12em;font-size:.78rem;font-weight:900}.success-card h2{margin:10px 0;font-size:1.6rem}.success-card p{color:var(--muted)}.success-actions{gap:12px;margin-top:24px;display:grid}.site-footer{color:#9fb6c2;text-align:center;width:min(1180px,100% - 40px);margin:24px auto 40px;font-size:.82rem}.teacher-shell{margin-bottom:48px}.auth-panel{text-align:center;width:min(560px,100%);margin:8vh auto 0;padding:clamp(30px,5vw,54px)}.auth-panel h1{color:var(--navy-900);margin:16px 0 12px;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.15}.auth-panel>p{color:var(--muted);line-height:1.7}.google-button{border:1.5px solid var(--line);width:100%;color:var(--ink);background:var(--white);justify-content:center;align-items:center;gap:12px;margin:28px 0 18px;display:flex}.google-button:hover{border-color:var(--cyan-dark);box-shadow:0 8px 24px #0c20341f}.google-g{color:#4285f4;border:2px solid #4285f4;border-radius:50%;place-items:center;width:28px;height:28px;font-weight:900;display:grid}.auth-panel .text-link{color:var(--muted);display:inline-block}.dashboard-header{color:var(--white);justify-content:space-between;align-items:flex-end;gap:24px;margin:18px 0 28px;display:flex}.dashboard-header h1{color:var(--white);font-size:clamp(2rem,4vw,3rem)}.dashboard-header p{color:#aac1cd;margin-bottom:0}.header-actions{gap:10px;display:flex}.header-actions .quiet-button{color:var(--white);background:0 0;border-color:#668292}.teacher-grid{grid-template-columns:minmax(300px,.72fr) minmax(0,1.28fr);align-items:start;gap:20px;display:grid}.launch-panel,.sessions-panel{padding:clamp(24px,4vw,38px)}.section-heading{align-items:flex-start;gap:14px;margin-bottom:26px;display:flex}.section-heading h2{margin-bottom:4px;font-size:1.35rem}.section-heading p{color:var(--muted);margin-bottom:0;line-height:1.5}.step-badge{height:38px;color:var(--navy-950);background:var(--yellow);border-radius:10px;flex:0 0 38px;place-items:center;font-weight:950;display:grid}.launch-panel form{gap:18px;display:grid}.sessions-list{gap:12px;display:grid}.session-card{border:1px solid var(--line);background:var(--white);border-radius:14px;padding:18px}.session-head{justify-content:space-between;gap:16px;display:flex}.session-title{margin:0;font-size:1.05rem}.session-meta{color:var(--muted);margin:5px 0 0;font-size:.85rem;line-height:1.5}.status-pill{white-space:nowrap;border-radius:999px;align-self:flex-start;padding:5px 9px;font-size:.78rem;font-weight:850}.status-pill.open{color:#075d44;background:#dff7ee}.status-pill.paused{color:#735100;background:#fff0bd}.saved-code{color:var(--cyan-dark);letter-spacing:.16em;background:#eaf8f6;border-radius:9px;margin:14px 0 0;padding:10px 12px;font-family:ui-monospace,monospace;font-weight:900}.session-actions{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.session-actions button{min-height:40px;color:var(--navy-900);background:#f7fbfa;border:1px solid #9db3bc;border-radius:9px;padding:8px 13px;font-weight:800}.session-actions button:hover{border-color:var(--cyan-dark)}.session-actions .close-action{color:var(--red);border-color:#e7aeba}.empty-state{color:var(--muted);text-align:center;border:1px dashed #9db3bc;border-radius:14px;padding:30px 20px;line-height:1.65}dialog{border:0;box-shadow:0 30px 90px #0000006b}dialog::backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#030f19c2}.code-dialog,.confirm-dialog{width:min(470px,100% - 32px);color:var(--ink);background:var(--paper);text-align:center;border-radius:20px;padding:34px}.dialog-close{width:38px;height:38px;color:var(--muted);background:0 0;border:0;border-radius:50%;font-size:1.7rem;position:absolute;top:12px;right:14px}.code-dialog h2{margin:12px 0 18px}.classroom-code{color:var(--navy-900);letter-spacing:.08em;margin:14px 0;font-family:ui-monospace,monospace;font-size:clamp(3.8rem,15vw,6rem);font-weight:950;line-height:1;display:block}.code-dialog>p{color:var(--muted)}.dialog-note{margin:18px 0 0;font-size:.82rem;line-height:1.5}.confirm-dialog h2{margin-bottom:10px}.confirm-dialog p{color:var(--muted);line-height:1.65}.dialog-actions{grid-template-columns:1fr 1fr;gap:10px;margin-top:24px;display:grid}.location-config{background:#edf8f6;border:1px solid #a6c5c7;border-radius:14px;gap:14px;margin:2px 0;padding:18px;display:grid}.location-config[hidden]{display:none}.location-config legend{color:var(--navy-900);padding:0 7px;font-weight:900}.location-config>p{color:var(--muted);margin:0;font-size:.86rem;line-height:1.55}.analytics-dialog{width:min(900px,100% - 32px);max-height:calc(100vh - 48px);color:var(--ink);background:var(--paper);border-radius:20px;padding:34px}.analytics-dialog h2{margin:10px 0 22px}.analytics-dialog>.secondary-button{margin-top:20px}.stats-grid{grid-template-columns:repeat(5,minmax(110px,1fr));gap:10px;margin-bottom:26px;display:grid}.stat-card{border:1px solid var(--line);background:var(--white);border-radius:12px;padding:15px}.stat-card strong,.stat-card span{display:block}.stat-card strong{color:var(--navy-900);font-size:1.5rem}.stat-card span{color:var(--muted);margin-top:4px;font-size:.8rem}.table-wrap{overflow-x:auto}.table-wrap table{border-collapse:collapse;background:var(--white);width:100%}.table-wrap th,.table-wrap td{border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;padding:11px 12px}.table-wrap th{color:var(--muted);letter-spacing:.06em;font-size:.78rem}.course-page{min-height:100vh}.course-topbar{min-height:76px}.course-identity{color:var(--white);border:1px solid #527185;border-radius:999px;padding:8px 12px;font-family:ui-monospace,monospace;font-size:.86rem}.course-shell{grid-template-columns:245px minmax(0,1fr);align-items:start;gap:20px;width:min(1240px,100% - 40px);margin:12px auto 48px;display:grid}.course-rail{color:var(--white);background:#0c2034f0;border:1px solid #29475b;border-radius:18px;padding:24px;position:sticky;top:16px}.progress-copy{color:#a9c0ce;justify-content:space-between;align-items:baseline;font-size:.8rem;display:flex}.progress-copy strong{color:var(--cyan);font-size:1.1rem}.progress-track{background:#2d4a5d;border-radius:999px;height:7px;margin:10px 0 24px;overflow:hidden}.progress-track span{border-radius:inherit;background:var(--cyan);height:100%;transition:width .22s;display:block}.step-list{counter-reset:course-step;gap:2px;margin:0;padding:0;list-style:none;display:grid}.step-list li{counter-increment:course-step;color:#9fb7c4;border-radius:9px;padding:10px 8px 10px 36px;font-size:.86rem;line-height:1.3;position:relative}.step-list li:before{content:counter(course-step);border:1px solid #527185;border-radius:50%;place-items:center;width:19px;height:19px;font-size:.7rem;display:grid;position:absolute;top:9px;left:9px}.step-list li[data-state=current]{color:var(--white);background:#1a3c53;font-weight:850}.step-list li[data-state=current]:before{border-color:var(--yellow);color:var(--navy-950);background:var(--yellow)}.step-list li[data-state=done]{color:#8cdace}.step-list li[data-state=done]:before{content:"✓";border-color:var(--cyan)}.autosave-note{color:#91abb8;border-top:1px solid #29475b;margin:22px 0 0;padding-top:16px;font-size:.75rem;line-height:1.5}.autosave-note span{color:var(--cyan)}.course-workspace{min-width:0}.course-loading,.step-panel{padding:clamp(26px,5vw,54px)}.course-loading h1{margin:12px 0}.step-header{border-bottom:1px solid var(--line);padding-bottom:26px}.step-header h1{color:var(--navy-900);letter-spacing:-.04em;margin:12px 0 10px;font-size:clamp(1.8rem,4vw,3rem);line-height:1.12}.step-header p{max-width:760px;color:var(--muted);margin-bottom:0;font-size:1rem;line-height:1.75}.question-stack{gap:18px;margin-top:26px;display:grid}.question-card{border:1px solid var(--line);background:var(--white);border-radius:15px;margin:0;padding:20px}.question-card legend{color:var(--navy-900);padding:0 7px;font-weight:900}.question-card>p{color:#385163;line-height:1.65}.choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.choice-card{border:1.5px solid var(--line);cursor:pointer;background:#fbfdfd;border-radius:11px;grid-template-columns:24px max-content minmax(0,1fr);align-items:center;column-gap:10px;min-height:58px;padding:10px 12px;line-height:1.4;display:grid}.choice-card:has(input:checked){border-color:var(--cyan-dark);box-shadow:inset 4px 0 var(--cyan-dark);background:#e8f8f5}.choice-card input{width:20px;height:20px;accent-color:var(--cyan-dark)}.choice-code{min-width:3ch;color:var(--cyan-dark);white-space:nowrap;font-family:ui-monospace,monospace;font-weight:900}.choice-card>span:last-child{overflow-wrap:anywhere;min-width:0}.step-footer{border-top:1px solid var(--line);justify-content:flex-end;margin-top:28px;padding-top:24px;display:flex}.step-footer .primary-button{width:min(100%,360px)}.walkthrough-box{background:#fff7d8;border:2px solid #e2bc4c;border-radius:15px;margin-top:26px;padding:20px}.comparison-summary{border-left:5px solid var(--green);color:#075d44;background:#e7f7f0;border-radius:10px;margin-top:22px;padding:16px 18px}.comparison-summary ul{grid-template-columns:repeat(2,1fr);gap:5px 18px;margin:10px 0 0;padding-left:1.2em;display:grid}.walkthrough-box h2{font-size:1.05rem}.walkthrough-box ul{grid-template-columns:repeat(2,1fr);gap:8px 18px;margin:0 0 18px;padding:0;list-style:none;display:grid}.walkthrough-box li{border-bottom:1px solid #ead999;justify-content:space-between;gap:12px;padding-bottom:7px;display:flex}.walkthrough-box li span{color:#725a14}.check-row{border:1px solid var(--line);background:var(--white);cursor:pointer;border-radius:11px;align-items:flex-start;gap:12px;padding:13px;line-height:1.55;display:flex}.check-row input{width:20px;height:20px;accent-color:var(--cyan-dark);flex:0 0 20px}.hazard-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:26px;display:grid}.hazard-card{border:1.5px solid var(--line);background:var(--white);cursor:pointer;border-radius:14px;align-items:flex-start;gap:13px;min-height:88px;padding:18px;line-height:1.55;display:flex}.hazard-card:has(input:checked){border-color:var(--red);background:#ffeff2}.hazard-card input{width:21px;height:21px;accent-color:var(--red);flex:0 0 21px}.selection-count{color:var(--muted);text-align:right;margin:14px 0 0;font-weight:800}.selection-count[data-complete=true]{color:var(--green)}.grade-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:26px;display:grid}.grade-card{border:1px solid var(--line);background:var(--white);border-radius:14px}.grade-card[open]{border-color:var(--cyan-dark)}.grade-card summary{cursor:pointer;grid-template-columns:72px 1fr;align-items:center;min-height:82px;padding:15px;font-weight:850;display:grid}.grade-card summary strong{color:var(--cyan-dark);font-size:1.55rem}.grade-card p{color:var(--muted);margin:0;padding:0 18px 18px;line-height:1.6}.grade-check{margin-top:18px}.ack-list{gap:10px;margin-top:26px;display:grid}.seat-confirm{max-width:280px;margin-top:22px}.feedback-block{gap:8px;margin-top:22px;display:grid}.feedback-block p{border-left:4px solid var(--green);color:#075d44;background:#e7f7f0;border-radius:8px;margin:0;padding:12px 14px;line-height:1.55}.feedback-block p[data-kind=error]{border-color:var(--red);color:#742033;background:#ffedf0}.result-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px;display:grid}.result-card{border:1px solid var(--line);background:var(--white);border-radius:15px;padding:22px}.result-card span,.result-card strong{display:block}.result-card span{color:var(--muted);font-size:.83rem}.result-card strong{color:var(--navy-900);margin-top:8px;font-size:1.25rem}.result-card.cleared{background:#e7f7f0;border-color:#60b89d}.result-card.remediation{background:#ffedf0;border-color:#e7aeba}.result-note{color:var(--muted);margin:22px 0;line-height:1.7}.course-exit{justify-content:center;align-items:center;text-decoration:none;display:inline-flex}@media (width<=860px){.student-shell,.teacher-grid{grid-template-columns:1fr}.course-panel{order:-1}.course-panel .lesson-list{grid-template-columns:repeat(3,1fr);gap:10px}.lesson-list li{border:1px solid #ffffff26;border-radius:12px;grid-template-columns:1fr;padding:14px}.ready-note{display:none}.stats-grid{grid-template-columns:repeat(2,1fr)}.course-shell{grid-template-columns:1fr}.course-rail{position:static}.step-list{grid-template-columns:repeat(4,1fr)}.step-list li{text-align:center;padding:30px 5px 7px}.step-list li:before{top:6px;left:50%;transform:translate(-50%)}.autosave-note{display:none}}@media (width<=620px){.topbar,.student-shell,.teacher-shell,.site-footer{width:min(100% - 24px,1180px)}.topbar{min-height:72px}.student-shell{margin-top:8px}.two-columns,.course-panel .lesson-list{grid-template-columns:1fr}.login-panel,.course-panel,.launch-panel,.sessions-panel{border-radius:16px}.identity-preview{flex-direction:column;align-items:flex-start;gap:6px}.dashboard-header{flex-direction:column;align-items:flex-start}.header-actions{width:100%}.header-actions button{flex:1}.session-head{flex-direction:column;gap:9px}.status-pill{align-self:flex-start}.course-shell{width:min(100% - 24px,1240px)}.course-topbar{width:min(100% - 24px,1180px)}.course-identity{overflow-wrap:anywhere;text-align:right;max-width:45%}.step-list{grid-template-columns:repeat(2,1fr)}.choice-grid,.hazard-grid,.grade-grid,.result-grid,.walkthrough-box ul,.comparison-summary ul{grid-template-columns:1fr}.step-panel,.course-loading{border-radius:16px;padding:24px 18px}.analytics-dialog{padding:26px 18px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}
