#openSandraArea{background:linear-gradient(135deg,#12372a,#2f855a)!important;border-color:#2f855a!important;color:#fff!important}
#sandraArea{--sb-deep:#12372a;--sb-mid:#2f855a;--sb-light:#dff3e7;--sb-cream:#fffdf7;--sb-gold:#d9a441;--sb-ink:#1f2937;--sb-red:#b34444;--sb-green:#16834f;color:var(--sb-ink);min-height:100vh;background:#f4f7f2;padding:0 0 30px;font:inherit}
#sandraArea *{box-sizing:border-box;min-width:0}
.sb-topbar{position:sticky;top:0;z-index:40;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px clamp(16px,3vw,38px);background:#12372af5;color:#fff;box-shadow:0 6px 20px #102a2030;backdrop-filter:blur(10px)}
.sb-brand{display:flex;align-items:center;gap:12px}.sb-monogram{display:grid;place-items:center;width:43px;height:43px;border-radius:12px;background:#d9a441;color:#12372a;font-weight:1000;font-size:1.05rem}.sb-brand strong{display:block;font-size:1.08rem;line-height:1.2}.sb-brand small{display:block;color:#d1ecdc;font-size:.8rem}.sb-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:7px;flex-wrap:wrap}.sb-toolbar button,.sb-timer-button{min-height:38px;padding:7px 11px;border:1px solid #ffffff67;border-radius:9px;background:#ffffff16;color:#fff;font-size:.83rem;font-weight:850;cursor:pointer}.sb-toolbar button:hover,.sb-timer-button:hover{background:#ffffff30}.sb-time{font-variant-numeric:tabular-nums;font-weight:950;min-width:64px;text-align:center}.sb-shell{width:min(1500px,100%);margin:auto;display:grid;grid-template-columns:245px minmax(0,1fr);gap:22px;padding:20px clamp(14px,2.5vw,36px)}.sb-sidebar{position:sticky;top:88px;align-self:start;border:1px solid #d7e5d9;border-radius:18px;background:#fff;padding:15px;box-shadow:0 8px 20px #12372a12}.sb-side-title{margin:0 0 12px;color:#557064;font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;font-weight:950}.sb-nav{display:grid;gap:5px}.sb-nav button{display:flex;align-items:center;gap:9px;text-align:left;width:100%;min-height:44px;padding:8px 10px;border:1px solid transparent;border-radius:10px;background:transparent;color:#254639;font-size:.87rem;font-weight:850;cursor:pointer}.sb-nav button:hover{background:#f0f8f2}.sb-nav button.active{background:#dff3e7;border-color:#a4d9b7;color:#12372a}.sb-nav-index{display:grid;place-items:center;flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:#e8f1e9;color:#245940;font-size:.76rem;font-weight:950}.sb-nav button.done .sb-nav-index{background:#2f855a;color:#fff}.sb-progress-track{height:10px;border-radius:99px;background:#e4eee6;overflow:hidden}.sb-progress-fill{height:100%;width:0;background:linear-gradient(90deg,#2f855a,#d9a441);transition:width .25s}.sb-progress-label{display:flex;justify-content:space-between;gap:9px;margin:8px 0 0;color:#476355;font-size:.82rem;font-weight:800}.sb-content{min-height:70vh}.sb-hero{padding:clamp(22px,3vw,38px);border-radius:22px;background:linear-gradient(130deg,#12372a 0%,#1f684a 64%,#2f855a);color:white;box-shadow:0 13px 27px #12372a24}.sb-eyebrow{display:inline-block;padding:6px 10px;border-radius:99px;background:#ffffff24;color:#f7e7bf;font-size:.79rem;font-weight:950;letter-spacing:.05em;text-transform:uppercase}.sb-hero h1{margin:14px 0 7px;font-size:clamp(2rem,4vw,3.6rem);line-height:1.06}.sb-hero p{margin:0;max-width:800px;color:#e4f5e9;font-size:1.05rem;line-height:1.5}.sb-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.sb-meta span{padding:7px 10px;border-radius:8px;background:#ffffff1b;font-size:.82rem;font-weight:850}.sb-stage{display:grid;gap:17px;margin-top:18px}.sb-card{padding:clamp(17px,2.4vw,27px);border:1px solid #d9e7db;border-radius:18px;background:#fff;box-shadow:0 7px 18px #143d2510}.sb-card h2{margin:0 0 13px;font-size:clamp(1.25rem,2vw,1.7rem);color:#174e34}.sb-card h3{margin:15px 0 8px;font-size:1.1rem;color:#205e41}.sb-card p,.sb-card li{font-size:1rem;line-height:1.56}.sb-card p:last-child{margin-bottom:0}.sb-lead{font-size:1.09rem!important;color:#405e4b}.sb-note{padding:13px 15px;border-left:5px solid #2f855a;border-radius:0 10px 10px 0;background:#e8f5eb;line-height:1.5}.sb-note.gold{border-color:#d9a441;background:#fff8e9}.sb-note.red{border-color:#b34444;background:#fff1ef}.sb-note.blue{border-color:#318199;background:#eef8fa}.sb-grid-2,.sb-grid-4{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.sb-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.sb-info-card{padding:17px;border:1px solid #d8e7dc;border-radius:14px;background:#fbfefa}.sb-info-card h3{margin:0 0 7px}.sb-info-card p{margin:0}.sb-illustration{height:150px;border-radius:13px;background:linear-gradient(135deg,#e7f3e4,#f9f5e8);display:grid;place-items:center;margin-bottom:10px;overflow:hidden}.sb-illustration svg{height:100%;width:100%}.sb-reveal{display:inline-flex;align-items:center;justify-content:center;min-height:39px;padding:8px 12px;border:1px solid #7fbd98;border-radius:9px;background:#eef8f0;color:#175f38;font-size:.88rem;font-weight:900;cursor:pointer}.sb-reveal:hover,.sb-reveal:focus-visible{background:#dff3e7;outline:2px solid #2f855a77;outline-offset:2px}.sb-answer{margin-top:10px;padding:12px 14px;border-left:5px solid #16834f;border-radius:0 9px 9px 0;background:#e7f7ed;color:#244235;line-height:1.5}.sb-answer[hidden]{display:none}.sb-teacher{border-color:#d8c693;background:#fffbef}.sb-teacher[hidden]{display:none!important}.sb-teacher h2{color:#725219}.sb-teacher .sb-answer-key{display:grid;gap:8px}.sb-teacher .sb-answer-key p{margin:0}.sb-qa-list{display:grid;gap:10px}.sb-qa{padding:14px;border:1px solid #d9e6dd;border-radius:12px;background:#fcfefc}.sb-qa>strong{display:block;margin-bottom:10px;font-size:1rem;line-height:1.4}.sb-qa .sb-choices{display:flex;flex-wrap:wrap;gap:8px}.sb-choices button,.sb-word-btn,.sb-match-btn,.sb-chip-button{padding:8px 11px;border:1px solid #a8c9b1;border-radius:9px;background:#fff;color:#174b32;font-size:.93rem;font-weight:850;cursor:pointer}.sb-choices button:hover,.sb-word-btn:hover,.sb-match-btn:hover,.sb-chip-button:hover{background:#edf8ef}.sb-choices button.selected,.sb-word-btn.selected,.sb-match-btn.selected,.sb-chip-button.selected{border-color:#2f855a;background:#dff3e7}.sb-choices button.correct,.sb-match-btn.matched{border-color:#16834f;background:#d9f7e2;color:#116232}.sb-choices button.incorrect,.sb-match-btn.incorrect{border-color:#b34444;background:#fff0ef;color:#923a3a}.sb-feedback{min-height:20px;margin:8px 0 0;color:#41564a;font-size:.89rem;font-weight:800}.sb-feedback.good{color:#147043}.sb-feedback.bad{color:#a53e3e}.sb-field{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.sb-field input,.sb-textarea{min-height:40px;padding:8px 10px;border:1px solid #aac5b1;border-radius:8px;background:#fff;color:#1f2937;font:inherit;font-size:1rem}.sb-field input{width:min(370px,100%)}.sb-textarea{width:100%;min-height:100px;resize:vertical}.sb-action{min-height:39px;padding:8px 12px;border:1px solid #2f855a;border-radius:9px;background:#2f855a;color:#fff;font-size:.9rem;font-weight:900;cursor:pointer}.sb-action.secondary{background:#fff;color:#246d45}.sb-action.gold{background:#d9a441;border-color:#d9a441;color:#203323}.sb-action:hover{filter:brightness(.95)}.sb-small-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}.sb-formula{display:flex;flex-wrap:wrap;align-items:center;gap:7px;padding:12px;margin:10px 0;border-radius:12px;background:#f0f7f1}.sb-token{padding:8px 10px;border-radius:8px;background:#2f855a;color:#fff;font-weight:950}.sb-token.subject{background:#296177}.sb-token.aux{background:#ac7a20}.sb-token.verb{background:#2f855a}.sb-token.time{background:#9165a6}.sb-token.negative{background:#b75e5e}.sb-plus{font-weight:950;color:#66776a}.sb-tablewrap{overflow-x:auto;border:1px solid #d7e5da;border-radius:12px}.sb-table{border-collapse:collapse;width:100%;min-width:550px}.sb-table th{padding:10px;text-align:left;background:#184f35;color:#fff}.sb-table td{padding:10px;border-top:1px solid #d9e6dc;line-height:1.4}.sb-table tr:nth-child(even) td{background:#f4faf5}.sb-flash-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.sb-flash{min-height:145px;padding:15px;border:2px solid #d7e6d9;border-radius:14px;background:#fffdf7;text-align:left;cursor:pointer;transition:transform .2s,box-shadow .2s}.sb-flash:hover{transform:translateY(-2px);box-shadow:0 8px 17px #163f251b}.sb-flash.flipped{background:#eaf7ee;border-color:#80bf99}.sb-flash strong{display:block;font-size:1.15rem;color:#153e2a}.sb-flash small{display:block;color:#637c68;margin-top:5px}.sb-flash p{margin:6px 0}.sb-star{color:#ab7a16;font-weight:1000}.sb-speech{margin-top:8px;min-height:33px;padding:5px 9px;border:1px solid #8ebba0;border-radius:8px;background:#fff;color:#1b6440;cursor:pointer;font-weight:850}.sb-category-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:13px}.sb-category-tabs button{padding:9px 13px;border:1px solid #b8d6c1;border-radius:99px;background:#fff;color:#245c3c;font-weight:900;cursor:pointer}.sb-category-tabs button.active{background:#2f855a;color:#fff}.sb-phrase-grid{display:flex;flex-wrap:wrap;gap:8px}.sb-match{display:grid;grid-template-columns:1fr 1fr;gap:18px}.sb-match-col{display:grid;gap:7px;align-content:start}.sb-match-btn{text-align:left}.sb-builder-bank,.sb-builder-output{display:flex;flex-wrap:wrap;gap:7px;min-height:45px;padding:9px;border:1px dashed #a9cbbb;border-radius:10px}.sb-builder-output{background:#f1f8f2}.sb-reading p{font-size:1.08rem;line-height:1.75}.sb-hunt{padding:1px 3px;border-radius:4px;cursor:pointer}.sb-hunt:hover{background:#e8f4ec}.sb-hunt.simple{background:#c9eed7;color:#0e6338}.sb-hunt.continuous{background:#ffe7a9;color:#684b12}.sb-hunt.vocab{background:#d9eaf7;color:#1b5876}.sb-hunt-tools{display:flex;flex-wrap:wrap;gap:7px;align-items:center}.sb-hunt-tools button.active{box-shadow:0 0 0 3px #8cbca2}.sb-speaking-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.sb-speaking-timer{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:13px;border-radius:12px;background:#12372a;color:#fff}.sb-speaking-timer strong{font-size:1.5rem;font-variant-numeric:tabular-nums;min-width:70px}.sb-speaking-timer button{padding:8px 11px;border:1px solid #cce7d6;border-radius:8px;background:#ffffff19;color:#fff;font-weight:900;cursor:pointer}.sb-vocab-checks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.sb-vocab-checks label{display:flex;gap:7px;align-items:center;padding:8px;border:1px solid #d4e5d8;border-radius:9px;background:#fbfdfb;font-size:.87rem}.sb-vocab-checks input{accent-color:#2f855a}.sb-score-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px}.sb-score-grid label{padding:11px;border:1px solid #d7e7da;border-radius:10px;background:#fbfdfb;font-size:.88rem;font-weight:800}.sb-score-grid select{display:block;width:100%;margin-top:7px;padding:7px;border:1px solid #9bbda5;border-radius:7px}.sb-score-result{margin-top:12px;padding:15px;border-radius:11px;background:#e6f5e9;color:#174d31;font-size:1.1rem;font-weight:950}.sb-bottom{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:18px 0}.sb-bottom button{min-height:45px;padding:10px 16px;border:1px solid #2f855a;border-radius:10px;background:#fff;color:#266740;font-weight:900;cursor:pointer}.sb-bottom button:last-child{background:#2f855a;color:#fff}.sb-print-head{display:none}
@media(max-width:1100px){.sb-shell{grid-template-columns:1fr}.sb-sidebar{position:static}.sb-nav{display:flex;overflow-x:auto;padding-bottom:5px}.sb-nav button{flex:0 0 auto;width:auto;white-space:nowrap}.sb-side-title{display:none}}
@media(max-width:760px){.sb-topbar{position:static;align-items:flex-start;flex-direction:column}.sb-toolbar{justify-content:flex-start}.sb-grid-2,.sb-grid-4,.sb-speaking-grid,.sb-match,.sb-score-grid{grid-template-columns:1fr}.sb-flash-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sb-vocab-checks{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:480px){.sb-flash-grid,.sb-vocab-checks{grid-template-columns:1fr}.sb-topbar button{font-size:.79rem}.sb-shell{padding:13px}}
@media print{body.sb-printing>*:not(#sandraArea){display:none!important}body.sb-printing #sandraArea{display:block!important;background:#fff;padding:0;color:#111}body.sb-printing #sandraArea .sb-topbar,body.sb-printing #sandraArea .sb-sidebar,body.sb-printing #sandraArea .sb-bottom,body.sb-printing #sandraArea .sb-hero,body.sb-printing #sandraArea .sb-reveal,body.sb-printing #sandraArea .sb-action,body.sb-printing #sandraArea .sb-teacher{display:none!important}body.sb-printing #sandraArea .sb-shell{display:block;padding:0}body.sb-printing #sandraArea .sb-stage{display:block;margin:0}body.sb-printing #sandraArea .sb-card{box-shadow:none;border:0;padding:7px 0;break-inside:avoid}body.sb-printing #sandraArea .sb-print-head{display:block;font-size:22px;font-weight:950;margin-bottom:12px}body.sb-printing #sandraArea input{border:0;border-bottom:1px solid #888;border-radius:0}body.sb-printing #sandraArea .sb-answer{display:none!important}}

/* Presenter-first revision: high contrast at shared-screen distance. */
#sandraArea{background:#f3f6f4;color:#17252b;font-size:17px}
#sandraArea .sb-shell{grid-template-columns:230px minmax(0,1fr);gap:18px}
#sandraArea .sb-hero{padding:22px 26px;border-radius:16px;background:#12372a}
#sandraArea .sb-hero h1{font-size:clamp(1.8rem,3vw,2.8rem);margin:10px 0 5px}
#sandraArea .sb-hero p{font-size:1.06rem;color:#f4fff8}
#sandraArea .sb-card{border-color:#cfded4;box-shadow:0 5px 15px #12372a0d}
#sandraArea .sb-card p,#sandraArea .sb-card li{font-size:1.02rem;line-height:1.6;color:#1f2937}
#sandraArea .sb-formula{background:#f4f7f8;border:1px solid #dce5e4;gap:9px;padding:12px}
#sandraArea .sb-formula .sb-token{color:#17252b!important;font-size:1rem;line-height:1.3;box-shadow:none;text-shadow:none;border:1px solid transparent}
#sandraArea .sb-formula .sb-token.subject{background:#d9ebf1!important;border-color:#8fb7c6;color:#123d50!important}
#sandraArea .sb-formula .sb-token.aux{background:#fff0c7!important;border-color:#e7c966;color:#583d00!important}
#sandraArea .sb-formula .sb-token.verb{background:#ddf2e3!important;border-color:#96d1a8;color:#155432!important}
#sandraArea .sb-formula .sb-token.time{background:#ece3f2!important;border-color:#bea5ce;color:#56396b!important}
#sandraArea .sb-formula .sb-plus{color:#42554b!important;font-size:1.1rem}
#sandraArea .sb-note{color:#183d2a}
#sandraArea .sb-note.gold{color:#533f16}
#sandraArea .sb-note.red{color:#69312f}
#sandraArea .sb-note.blue{color:#224c59}
#sandraArea .sb-reveal,#sandraArea .sb-action,#sandraArea .sb-choices button,#sandraArea .sb-chip-button{font-size:.96rem;min-height:44px}
#sandraArea .sb-card h2{color:#16472f}
#sandraArea .sb-card h3{color:#1b573b}
#sandraArea .sb-qa>strong{font-size:1.03rem}
#sandraArea .sb-sidebar{top:80px}
@media(max-width:1100px){#sandraArea .sb-shell{grid-template-columns:1fr}}
#sandraArea .sb-presenter-hint{margin:0 0 12px;padding:10px 13px;border-radius:10px;background:#e9f3ed;color:#204b34;font-weight:750}
#sandraArea .sb-time-total{color:#d5eee0;font-size:.84rem;font-weight:800;margin-left:-5px}
#sandraArea .sb-vocab-photo{position:relative;width:100%;overflow:hidden;border-radius:10px;border:1px solid #d5e7d9;background:#eaf3ec;margin:0 0 12px}
#sandraArea .sb-vocab-photo img{position:absolute;display:block;max-width:none!important;height:auto!important;transform:none!important;object-fit:initial!important}
#sandraArea .sb-flash{padding:12px;overflow:hidden}
#sandraArea .sb-flash strong{font-size:1.18rem;line-height:1.25}
#sandraArea .sb-flash small{font-size:.83rem}
#sandraArea .sb-flash-trans{padding:9px 10px;border-radius:8px;background:#f4f8f4;color:#1f3e2c!important;font-size:.96rem!important;line-height:1.4!important}
#sandraArea .sb-flash-trans b{color:#165d3e}
#sandraArea .sb-flash-trans span{padding:0 4px;color:#8b6420}
#sandraArea .sb-grammar-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
#sandraArea .sb-grammar-nav button{min-height:52px;padding:8px 10px;border:1px solid #b9d0c1;border-radius:10px;background:#fff;color:#204936;font:inherit;font-size:.9rem;font-weight:850;cursor:pointer}
#sandraArea .sb-grammar-nav button.active{background:#12372a;color:#fff;border-color:#12372a}
#sandraArea .sb-grammar-nav button:hover{border-color:#2f855a}
#sandraArea .sb-tense-panel{padding:18px;border-radius:14px;border:2px solid #b4d8c2;background:#f3fbf5}
#sandraArea .sb-tense-panel.continuous{border-color:#e6d18f;background:#fffaf0}
#sandraArea .sb-tense-panel h3{font-size:1.4rem;margin:8px 0 13px}
#sandraArea .sb-tense-panel p{font-size:1.14rem}
#sandraArea .sb-tense-label,#sandraArea .sb-inline-label{display:inline-block;padding:5px 8px;border-radius:7px;background:#d9f1e1;color:#155132;font-weight:950;font-size:.82rem;letter-spacing:.04em}
#sandraArea .sb-tense-label.continuous,#sandraArea .sb-inline-label.continuous,#sandraArea .sb-tense-panel.continuous .sb-tense-label{background:#ffe9b4;color:#69480a}
#sandraArea .sb-tense-cue{margin-bottom:0;color:#355947!important;font-size:.95rem!important}
#sandraArea .sb-presenter-prompt{margin-top:14px;padding:13px;border-radius:11px;border:1px solid #cbded2;background:#fbfdfb}
#sandraArea .sb-step-actions{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
#sandraArea .sb-step-actions button:disabled{opacity:.45;cursor:not-allowed}
#sandraArea .sb-frequency{display:flex;flex-wrap:wrap;gap:7px}
#sandraArea .sb-frequency span{padding:8px 12px;border:1px solid #b4d7bf;border-radius:9px;background:#ecf7ee;color:#184a2c;font-weight:800}
#sandraArea .sb-oral-cue{margin:0 0 9px;color:#496553!important;font-size:.87rem!important;font-weight:750}
#sandraArea .sb-type-optional{margin-top:10px;border-top:1px solid #e1ebe3;padding-top:8px;color:#315942;font-size:.85rem}
#sandraArea .sb-type-optional summary{cursor:pointer;font-weight:850}
#sandraArea .sb-type-optional .sb-field{margin-top:10px}
#sandraArea .sb-type-optional .sb-reveal{margin-top:8px}
#sandraArea .sb-home-line{display:block;height:26px;border-bottom:1px solid #9db8a5;margin:8px 0 12px}
@media(max-width:900px){#sandraArea .sb-grammar-nav{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:540px){#sandraArea .sb-grammar-nav{grid-template-columns:1fr}}
#sandraClassHub[hidden]{display:none!important}
#sandraClassHub{min-height:100vh;background:#f1f7f4;padding:32px 20px;color:#183e33}
.sb-hub-shell{max-width:1080px;margin:auto}
.sb-hub-hero{background:linear-gradient(125deg,#123d34,#216f5d);border-radius:24px;color:white;padding:28px 36px}
.sb-hub-hero button{background:#fff;color:#145342;border:0;border-radius:10px;padding:9px 14px;font-weight:850;cursor:pointer;float:right}
.sb-hub-hero span{display:block;font-weight:850;letter-spacing:.08em;font-size:13px}
.sb-hub-hero h1{font-size:clamp(34px,4vw,48px);margin:10px 0 6px}
.sb-hub-hero p{font-size:18px;margin:0;max-width:720px;color:#e4f3e9}
.sb-hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:20px}
.sb-hub-grid>*{display:flex;flex-direction:column;gap:8px;text-align:left;background:#fff;border:2px solid #c9e1d5;border-radius:18px;padding:25px;text-decoration:none;color:#183e33;cursor:pointer;box-shadow:0 12px 30px #1c473019}
.sb-hub-grid>*:hover{border-color:#18715e;transform:translateY(-2px)}
.sb-hub-grid small{color:#19705a;font-size:12px;font-weight:950;letter-spacing:.08em}
.sb-hub-grid strong{font-size:25px;line-height:1.2}
.sb-hub-grid span{color:#536f64;font-size:16px}
@media(max-width:900px){.sb-hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.sb-hub-grid{grid-template-columns:1fr}.sb-hub-hero{padding:23px}.sb-hub-hero button{float:none;margin-bottom:17px}}