:root{--ws-teal:#0d7472;--ws-teal-dark:#075856;--ws-blue:#d9ebf7;--ws-teal-pale:#def3ed;--ws-purple:#ede4f5;--ws-amber:#fff0ce;--ws-ink:#102942;--ws-paper:#fffdf8}
.ws-hero{background:linear-gradient(120deg,#061d3e 0%,#082b5c 58%,#0d7472 100%);color:#fff}
.ws-hero__grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(230px,.55fr);align-items:center;gap:clamp(2rem,6vw,5rem);padding:clamp(3.2rem,7vw,6rem) 0}
.ws-hero h1{margin:.35rem 0 .25rem;font-size:clamp(2.7rem,6vw,5rem)}.ws-hero p{max-width:62ch;color:#eaf4f7}.ws-hero__subtitle{margin:0 0 1rem;color:#bfe7e3!important;font:700 clamp(1.1rem,2.2vw,1.5rem)/1.3 var(--serif)}
.ws-hero img{width:min(100%,330px);justify-self:end;border:1px solid #ffffff55;border-radius:8px;box-shadow:0 25px 55px #0006}
.ws-intro-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(2rem,5vw,4rem);align-items:start}.ws-intro-grid h2,.ws-mode-guide h2,.ws-ethics h2{margin:.3rem 0 .8rem;color:var(--navy);font-size:clamp(1.8rem,3vw,2.6rem)}
.ws-pdf-card{display:grid;grid-template-columns:140px 1fr;gap:1.25rem;padding:1.25rem;border:1px solid var(--line);border-top:4px solid var(--ws-teal);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-md)}.ws-pdf-card img{width:140px;border-radius:5px}.ws-pdf-card h2{margin:.1rem 0 .5rem;color:var(--navy)}.ws-action-row{display:flex;flex-wrap:wrap;gap:.65rem;margin-top:1rem}
.ws-mode-guide{background:#eef5f6}.ws-mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.ws-mode-grid article{padding:1.3rem;border:1px solid #cbdfe0;border-radius:var(--radius);background:#fff}.ws-mode-grid h3{margin:0 0 .45rem;color:var(--navy)}
.ws-color-key{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem;margin:1.3rem 0}.ws-key{min-height:6.2rem;padding:1rem;border:1px solid #00000014;border-radius:8px}.ws-key strong,.ws-key span{display:block}.ws-key strong{color:var(--navy);font-family:var(--serif);font-size:1.1rem}.ws-key--blue{background:var(--ws-blue)}.ws-key--teal{background:var(--ws-teal-pale)}.ws-key--purple{background:var(--ws-purple)}.ws-key--amber{background:var(--ws-amber)}.ws-note{max-width:82ch;color:var(--muted)}
.ws-chapter-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.25rem}.ws-chapter-card{display:grid;grid-template-columns:180px 1fr;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}.ws-chapter-card:hover{box-shadow:var(--shadow-md)}.ws-chapter-card img{width:100%;height:100%;min-height:260px;object-fit:cover}.ws-chapter-card__body{display:flex;flex-direction:column;padding:1.25rem}.ws-chapter-card__number{color:var(--ws-teal);font-weight:800;letter-spacing:.1em;text-transform:uppercase}.ws-chapter-card h3{margin:.4rem 0 .6rem;color:var(--navy);font-size:1.35rem}.ws-chapter-card p{margin:0 0 .7rem;color:var(--muted)}.ws-chapter-card .button{margin-top:auto;align-self:flex-start}.ws-model-count{font-size:.86rem;font-weight:800;color:var(--ws-teal-dark)}
.ws-search-label{display:block;margin-bottom:.4rem;color:var(--navy);font-weight:800}.ws-search{width:min(100%,46rem);padding:.85rem 1rem;border:2px solid #7d8da0;border-radius:8px;background:#fff;font-size:1rem}.ws-search:focus{border-color:var(--ws-teal)}.ws-search-status{color:var(--muted)}.ws-search-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem}.ws-search-item{display:grid;grid-template-columns:4.4rem 1fr;gap:.8rem;padding:.9rem 1rem;border:1px solid var(--line);border-radius:8px;background:#fff;text-decoration:none;color:var(--text)}.ws-search-item:hover{border-color:var(--ws-teal);box-shadow:var(--shadow-sm);color:var(--text)}.ws-search-item__id{display:grid;place-items:center;height:2.6rem;border-radius:6px;background:#dceef0;color:var(--navy);font-weight:900}.ws-search-item strong,.ws-search-item span{display:block}.ws-search-item span{margin-top:.2rem;color:var(--muted);font-size:.84rem}.ws-ethics{max-width:58rem;padding:1.5rem;border-left:5px solid var(--ws-teal);background:#fff}
.ws-chapter-hero{padding:0;background:#071f43;color:#fff}.ws-chapter-hero__inner{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(2rem,6vw,5rem);align-items:center;padding:2.5rem 0}.ws-chapter-hero__inner img{width:300px;max-height:350px;object-fit:cover;object-position:center;border-radius:8px;box-shadow:0 18px 38px #0006}.ws-chapter-hero h1{margin:.35rem 0 .8rem;font-size:clamp(2rem,4vw,3.4rem)}.ws-chapter-hero p{max-width:70ch;color:#e6eef7}.ws-focus{display:inline-block;margin-top:.7rem;padding:.55rem .8rem;border:1px solid #ffffff45;border-radius:6px;background:#ffffff12;color:#fff!important;font-size:.93rem}
.ws-chapter-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:2rem;align-items:start}.ws-sidebar{position:sticky;top:1rem}.ws-sidebar__panel{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.ws-sidebar h2{margin:0;padding:1rem;background:var(--navy);color:#fff;font-size:1.1rem}.ws-model-nav{max-height:72vh;overflow:auto;list-style:none;margin:0;padding:.45rem}.ws-model-nav button{width:100%;padding:.65rem .7rem;border:0;border-left:4px solid transparent;border-radius:4px;background:transparent;color:var(--text);text-align:left;cursor:pointer}.ws-model-nav button:hover{background:#edf5f6}.ws-model-nav button[aria-current=true]{border-left-color:var(--ws-teal);background:#dfeff0;color:var(--navy);font-weight:800}.ws-mobile-selector{display:none;margin-bottom:1rem}.ws-mobile-selector label{display:block;margin-bottom:.35rem;font-weight:800}.ws-mobile-selector select{width:100%;padding:.75rem;border:1px solid #8392a3;border-radius:6px;background:#fff}
.ws-model-shell{min-width:0}.ws-model-header{padding:1.25rem;border:1px solid var(--line);border-top:5px solid var(--ws-teal);border-radius:var(--radius);background:#fff}.ws-model-kicker{color:var(--ws-teal-dark);font-weight:900;letter-spacing:.07em;text-transform:uppercase}.ws-model-header h2{margin:.35rem 0 .9rem;color:var(--navy);font-size:clamp(1.75rem,3vw,2.5rem)}.ws-meta-grid{display:grid;grid-template-columns:1fr 2fr 1fr;gap:.65rem}.ws-meta-grid div{padding:.7rem;border-radius:6px;background:#eff4f7}.ws-meta-grid strong,.ws-meta-grid span{display:block}.ws-meta-grid strong{color:var(--navy);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase}.ws-situation{margin:1rem 0;padding:1rem 1.1rem;border-left:4px solid var(--gold);background:#fff8e7}.ws-situation h3{margin:0 0 .35rem;color:var(--navy)}.ws-situation p{margin:0}
.ws-modebar{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin:1rem 0;padding:.75rem;border:1px solid var(--line);border-radius:8px;background:#fff}.ws-mode-tabs{display:inline-flex;border:1px solid var(--navy);border-radius:7px;overflow:hidden}.ws-mode-tabs button{padding:.65rem .9rem;border:0;background:#fff;color:var(--navy);font-weight:800;cursor:pointer}.ws-mode-tabs button[aria-pressed=true]{background:var(--navy);color:#fff}.ws-clean-label{display:flex;align-items:center;gap:.5rem;font-weight:700}.ws-clean-label input{width:1.2rem;height:1.2rem;accent-color:var(--ws-teal)}
.ws-study-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(250px,.75fr);gap:1rem;align-items:start}.ws-document{overflow-x:auto;padding:clamp(1rem,3vw,2rem);border:1px solid #cfd6dc;border-radius:8px;background:var(--ws-paper);box-shadow:0 8px 22px #082b5c12;color:#182433;font-family:Georgia,'Times New Roman',serif;font-size:1rem;line-height:1.62}.ws-model-line{min-height:1.4em;padding-left:var(--indent,0);white-space:pre-wrap;overflow-wrap:anywhere}.ws-model-line.ws-gap{margin-top:.72rem}.ws-passage{padding:.06rem .09rem;border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone;cursor:pointer}.ws-passage:focus{outline:3px solid #17283d;outline-offset:2px}.ws-passage--blue{background:var(--ws-blue)}.ws-passage--teal{background:var(--ws-teal-pale)}.ws-passage--purple{background:var(--ws-purple)}.ws-passage--amber{background:var(--ws-amber)}.ws-passage.is-selected{box-shadow:0 0 0 2px var(--navy)}.ws-document.is-clean .ws-passage{background:transparent;box-shadow:none;cursor:text}.ws-document.is-practice .ws-passage{background:#f4f6f7;box-shadow:inset 0 0 0 1px #9aa5b1}.ws-document.is-practice .ws-passage::after{content:' ◇';color:#5f6974;font-family:var(--sans);font-size:.72rem}.ws-document.is-practice .ws-passage.is-answered::after{content:' ◆';color:var(--ws-teal-dark)}.ws-document.is-practice .ws-passage.is-correct{box-shadow:inset 0 0 0 2px #17754f}.ws-document.is-practice .ws-passage.is-incorrect{box-shadow:inset 0 0 0 2px #b13b47}.ws-document.is-practice.is-revealed .ws-passage--blue{background:var(--ws-blue)}.ws-document.is-practice.is-revealed .ws-passage--teal{background:var(--ws-teal-pale)}.ws-document.is-practice.is-revealed .ws-passage--purple{background:var(--ws-purple)}.ws-document.is-practice.is-revealed .ws-passage--amber{background:var(--ws-amber)}
.ws-annotation-panel{position:sticky;top:1rem;padding:1rem;border:1px solid var(--line);border-radius:8px;background:#fff}.ws-annotation-panel h3{margin:0 0 .7rem;color:var(--navy)}.ws-annotation-card{margin:.55rem 0;padding:.75rem;border-left:5px solid;border-radius:0 6px 6px 0;background:#f7f9fb}.ws-annotation-card--blue{border-color:#6ca7cf}.ws-annotation-card--teal{border-color:#45a68c}.ws-annotation-card--purple{border-color:#9e74bc}.ws-annotation-card--amber{border-color:#d69a25}.ws-annotation-card strong,.ws-annotation-card span{display:block}.ws-annotation-card span{margin-top:.25rem;color:var(--muted);font-size:.9rem}.ws-annotation-card.is-active{background:#e9f3f4;box-shadow:0 0 0 2px var(--ws-teal)}
.ws-classifier{padding:1rem;border:1px solid #bfd3d5;border-radius:8px;background:#eff7f7}.ws-classifier h3{margin:0 0 .4rem;color:var(--navy)}.ws-category-buttons{display:grid;gap:.45rem;margin-top:.7rem}.ws-category-buttons button{padding:.6rem .7rem;border:1px solid #8091a4;border-radius:6px;background:#fff;text-align:left;cursor:pointer}.ws-category-buttons button:hover,.ws-category-buttons button[aria-pressed=true]{border-color:var(--ws-teal);background:#dcefee}.ws-practice-actions{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:1rem}.ws-feedback{margin-top:1rem;padding:.85rem;border-radius:6px;background:#f2f5f8}.ws-feedback[hidden]{display:none}.ws-feedback ul{margin:.5rem 0 0;padding-left:1.2rem}.ws-feedback .correct{color:#126a45}.ws-feedback .incorrect{color:#9e2634}
.ws-practice-actions[hidden],.ws-clean-label[hidden]{display:none}
.ws-sample-navigation{display:flex;justify-content:space-between;gap:1rem;margin:1rem 0}.ws-sample-navigation button{max-width:48%}.ws-workspace{margin-top:1.5rem;padding:1.25rem;border:1px solid var(--line);border-top:5px solid var(--gold);border-radius:8px;background:#fff}.ws-workspace h3{margin:0 0 .6rem;color:var(--navy);font-size:1.45rem}.ws-activity{padding:1rem;border-radius:6px;background:#fff8e7}.ws-draft{width:100%;min-height:260px;margin-top:1rem;padding:1rem;border:1px solid #77889b;border-radius:7px;resize:vertical;line-height:1.55}.ws-draft-tools{display:flex;align-items:center;flex-wrap:wrap;gap:.55rem;margin-top:.65rem}.ws-word-count{margin-right:auto;color:var(--muted);font-weight:700}.ws-button-secondary{padding:.58rem .75rem;border:1px solid var(--navy);border-radius:6px;background:#fff;color:var(--navy);font-weight:800;cursor:pointer}.ws-button-secondary:hover{background:#e7eff7}.ws-button-danger{border-color:#982c39;color:#982c39}.ws-status{min-height:1.5em;margin:.55rem 0 0;color:var(--ws-teal-dark);font-weight:700}.ws-chapter-end{margin-top:1.5rem;border:1px solid var(--line);border-radius:8px;background:#fff}.ws-chapter-end summary{padding:1rem;color:var(--navy);font-weight:900;cursor:pointer}.ws-chapter-end__content{padding:0 1rem 1rem;white-space:pre-wrap}.ws-chapter-links{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:1.5rem;padding-top:1.2rem;border-top:1px solid var(--line)}
@media(max-width:1000px){.ws-chapter-grid{grid-template-columns:1fr}.ws-study-grid{grid-template-columns:1fr}.ws-annotation-panel{position:static}.ws-color-key{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.ws-hero__grid,.ws-intro-grid,.ws-chapter-hero__inner,.ws-chapter-layout{grid-template-columns:1fr}.ws-hero img,.ws-chapter-hero__inner img{justify-self:start;width:min(100%,300px)}.ws-sidebar{display:none}.ws-mobile-selector{display:block}.ws-search-results{grid-template-columns:1fr}.ws-meta-grid{grid-template-columns:1fr}.ws-document{font-size:.96rem}.ws-model-line{padding-left:min(var(--indent,0),3rem)}}
@media(max-width:560px){.ws-chapter-card,.ws-pdf-card{grid-template-columns:1fr}.ws-chapter-card img{height:220px;min-height:0;object-position:center 20%}.ws-pdf-card img{width:min(100%,200px)}.ws-color-key,.ws-mode-grid{grid-template-columns:1fr}.ws-modebar{align-items:stretch}.ws-mode-tabs{display:grid;grid-template-columns:1fr 1fr;width:100%}.ws-action-row .button{width:100%}.ws-sample-navigation{flex-direction:column}.ws-sample-navigation button{max-width:none;width:100%}.ws-draft-tools button{flex:1 1 44%}}
@media print{.ws-modebar,.ws-sidebar,.ws-mobile-selector,.ws-sample-navigation,.ws-workspace,.ws-chapter-links,.ws-annotation-panel{display:none!important}.ws-study-grid{display:block}.ws-document{box-shadow:none}.ws-passage{background:transparent!important;box-shadow:none!important}}