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/* Study notebook: emphasis supports reasoning rather than replacing it. */
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.gs-revision{padding:28px;background:#fff9e6;border:1px solid #e7dcad;border-radius:10px;margin:45px 0}.gs-revision .gs-eyebrow{color:#7d6224}.gs-revision ol{padding-left:25px}.gs-revision li{font-size:16px;line-height:1.8;padding-left:7px;margin:15px 0}.gs-revisiontask{border-top:1px solid #e4d8aa;padding-top:16px;font-size:13px;line-height:1.8;margin:20px 0 0!important}.gs-chaptersources{border-top:1px solid #d4e0db;padding:25px 0;margin:35px 0}.gs-chaptersources h2{font-size:21px}.gs-chaptersources p,.gs-chaptersources li{font-size:12px;line-height:1.9;overflow-wrap:anywhere}.gs-chaptersources li{margin:8px 0}.gs-body[data-reading-mode=revision] .gs-deepblock,.gs-body[data-reading-mode=revision] .gs-evidence,.gs-body[data-reading-mode=revision] .gs-worked,.gs-body[data-reading-mode=revision] #mains,.gs-body[data-reading-mode=answer] .gs-deepblock,.gs-body[data-reading-mode=answer] #facts,.gs-body[data-reading-mode=answer] #connections,.gs-body[data-reading-mode=answer] #trap,.gs-body[data-reading-mode=answer] #recall{display:none}
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.gs-selfreview{border-top:1px solid #dce7e3;margin-top:22px;padding-top:18px;font-size:13px}.gs-selfreview summary{color:#086970;font-weight:700}.gs-selfreview li{font-size:13px;line-height:1.8}.gs-selfreview ul{padding-left:20px}@media print{.gs-selfreview{display:none!important}}
/* Illustrated GS collection: real text over editorial artwork. */
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#91c8c14a;border-radius:4px;padding:4px 11px;color:#e5efeb}.gs-campaign .gs-actions{margin:25px 0 23px}.gs-campaign .gs-button{background:#91d9cd;color:#15384b!important;border-color:#91d9cd;font-size:12px}.gs-campaign .gs-outline{background:transparent;color:#fff8e9!important;border-color:#adc6c582}.gs-campaign .gs-button:hover{background:#b5e7de;color:#15384b!important}.gs-campaign-copy>.gs-campaign-foot{font-size:8px;letter-spacing:1.4px;color:#cbb580;margin-bottom:0}.gs-campaign-art{position:relative;min-height:490px}.gs-art-orbit{position:absolute;border:1px solid #c6ac6440;width:450px;height:450px;border-radius:50%;left:10px;top:40px;box-shadow:0 0 0 40px #c6ac6407,0 0 0 80px #c6ac6405}.gs-campaign-art figure{margin:0;overflow:hidden;border:5px solid #efe9d8;box-shadow:0 20px 35px #06162766;position:absolute;background:#102c46}.gs-art-main{width:72%;height:355px;left:10%;top:65px;transform:rotate(5deg);border-radius:5px}.gs-art-main img{width:100%;height:100%;object-fit:cover}.gs-art-main:after{content:'';position:absolute;inset:45% 0 0;background:linear-gradient(transparent,#102b47)}.gs-art-main figcaption{position:absolute;bottom:23px;left:20px;right:12px;color:#fff8e7;font-family:Georgia,serif;font-size:22px;line-height:1.2;z-index:1}.gs-art-mini{width:40%;height:152px;border-width:4px!important;border-radius:3px}.gs-art-mini img{width:100%;height:100%;object-fit:cover}.gs-art-history{left:-2%;top:36px;transform:rotate(-9deg)}.gs-art-earth{right:4%;bottom:25px;transform:rotate(-7deg)}.gs-art-mini figcaption{position:absolute;bottom:0;left:0;right:0;background:#102e49e6;color:#fff6e4;font-size:10px;letter-spacing:.4px;padding:6px 9px}.gs-art-seal{position:absolute;right:5%;top:50px;background:#d1b16f;color:#16364b;font-size:10px;font-weight:800;line-height:1.5;letter-spacing:1.7px;text-align:center;border-radius:50%;width:81px;height:81px;display:grid;place-content:center;border:1px solid #e5d1a4;box-shadow:0 0 0 5px #d1b16f33}.gs-editionline{font-size:11px;color:#627678;text-align:center;letter-spacing:.3px;margin:18px 0 25px}.gs-module{padding:0;overflow:hidden;box-shadow:0 5px 14px #152d5005}.gs-module:hover{box-shadow:0 14px 28px #152d5017;transform:translateY(-5px)}.gs-module>.gs-cover{position:relative;display:block;aspect-ratio:1.28;background:#15334e;overflow:hidden}.gs-cover-art{position:absolute;inset:0}.gs-cover-art img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}.gs-module:hover img{transform:scale(1.035)}.gs-cover:after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,#102b4935 0%,transparent 26%,#102b49a3 54%,#102b49 85%)}.gs-cover-top{position:absolute;top:16px;left:18px;right:18px;display:flex;align-items:center;justify-content:space-between;z-index:1}.gs-cover-top .gs-tag{background:#f6f2e5ee;color:#163c4b;box-shadow:0 2px 5px #122a4620}.gs-cover-top .gs-module-number{color:white;font-size:17px;text-shadow:0 1px 6px 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b{font-size:17px}.gs-illustrated-hero{position:relative;max-width:none;min-height:300px;overflow:hidden;border-radius:16px;background:#15334e;margin-bottom:38px;padding:0}.gs-modulehero-art{position:absolute;right:0;top:0;bottom:0;width:60%}.gs-modulehero-art img{width:100%;height:100%;object-fit:cover}.gs-modulehero-art:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#15334e,transparent 85%)}.gs-modulehero-copy{position:relative;z-index:1;padding:38px;max-width:65%;background:linear-gradient(90deg,#15334e 45%,#15334e00)}.gs-illustrated-hero h1{color:#fff7e7;font-family:Georgia,serif;font-weight:400;font-size:clamp(32px,4vw,49px)}.gs-illustrated-hero .gs-eyebrow{color:#b1ded4}.gs-illustrated-hero p{color:#d5e6e2;font-size:15px;max-width:460px}.gs-illustrated-hero .gs-tag{background:#c9b17c;color:#16334b}
@media(min-width:1000px){.gs-module-grid{gap:25px}.gs-module{border-radius:13px}}@media(max-width:900px){.gs-campaign-copy{padding:35px 0 30px 28px}.gs-campaign{min-height:460px;grid-template-columns:1.1fr 1fr}.gs-campaign-art{min-height:460px}.gs-art-main{top:80px;height:300px;width:83%;left:0}.gs-art-history{top:50px}.gs-art-earth{right:3%;bottom:22px}.gs-art-seal{right:3%;top:36px}.gs-campaign h1{font-size:39px}.gs-cover-title h3{font-size:26px}.gs-cover-title{left:19px;right:15px;bottom:19px}}@media(max-width:600px){.gs-campaign{display:flex;flex-direction:column;border-radius:13px}.gs-campaign-copy{padding:28px 23px 7px}.gs-campaign .gs-eyebrow{font-size:8px;letter-spacing:1.4px}.gs-campaign h1{font-size:38px;margin:19px 0}.gs-campaign-copy>p{font-size:14px}.gs-campaign-art{min-height:290px;width:100%;max-width:430px;margin:auto}.gs-art-main{width:62%;height:235px;left:22%;top:12px}.gs-art-mini{width:34%;height:122px}.gs-art-history{left:5%;top:16px}.gs-art-earth{right:4%;bottom:18px}.gs-art-orbit{width:260px;height:260px;left:18%;top:5px}.gs-art-seal{right:5%;top:8px;width:65px;height:65px;font-size:8px}.gs-art-main figcaption{font-size:18px;left:13px;bottom:18px}.gs-campaign .gs-actions{gap:9px;margin:19px 0}.gs-campaign .gs-button{padding:12px 13px;font-size:11px}.gs-campaign-copy>.gs-campaign-foot{font-size:7px;letter-spacing:.9px}.gs-editionline{font-size:10px}.gs-module>.gs-cover{aspect-ratio:1.4}.gs-cover-title h3{font-size:31px}.gs-cover-title{left:23px;bottom:24px}.gs-cover-title>span{font-size:8px}.gs-module-info p{font-size:14px}.gs-illustrated-hero{min-height:390px;display:flex;align-items:flex-end}.gs-modulehero-art{width:100%;height:100%}.gs-modulehero-art:after{background:linear-gradient(0deg,#15334e 8%,#15334eb8 45%,#15334e00 100%)}.gs-modulehero-copy{padding:130px 24px 26px;max-width:100%;background:none}.gs-illustrated-hero h1{font-size:36px}.gs-illustrated-hero p{font-size:14px}.gs-illustrated-hero .gs-eyebrow{font-size:10px}}
@media(prefers-reduced-motion:reduce){.gs-module,.gs-cover-art img{transition:none}.gs-module:hover,.gs-module:hover img{transform:none}}@media print{.gs-campaign,.gs-editionline{display:none}.gs-modulehero-art{display:none}.gs-modulehero-copy{max-width:100%;padding:0;background:none}.gs-illustrated-hero{background:none;min-height:0}.gs-illustrated-hero h1,.gs-illustrated-hero p{color:#000}}
.gs-art-main figcaption{font-size:20px;max-width:210px}@media(max-width:600px){.gs-art-main figcaption{font-size:17px;max-width:160px}}
@media(max-width:600px){.gs-art-main figcaption{display:none}}
/* Chapter-specific visual teaching and revision desk. */
.gs-visual-study{margin:35px 0 48px;scroll-margin-top:130px;min-width:0}.gs-visual-heading{padding:20px 22px;background:#e7f1ec;border:1px solid #d1e3dc;border-bottom:3px solid #087e83;border-radius:10px 10px 0 0}.gs-visual-heading h2{margin:8px 0 12px!important;font-size:27px}.gs-visual-heading p{font-size:13px!important;margin:0!important;color:#48646a}.gs-visual-figure{margin:0 0 22px;border:1px solid #d1e3dc;background:#fff;border-radius:0 0 10px 10px;overflow:hidden;break-inside:avoid}.gs-visual-scroll{overflow:auto;background:#faf7ed;overscroll-behavior-x:contain;max-width:100%}.gs-visual-scroll img{display:block;width:100%;min-width:660px;height:auto}.gs-visual-scroll:focus-visible{outline:3px solid #c19b57;outline-offset:-3px}.gs-visual-figure figcaption{padding:21px 23px}.gs-visual-figure figcaption h3{font-size:20px;margin:0 0 9px}.gs-visual-figure figcaption p{font-size:13px!important;color:#536971;margin:10px 0}.gs-visual-controls{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin:18px 0}.gs-visual-controls button{background:#15334e;color:white;border:0;border-radius:6px;padding:10px 15px;font-size:12px;font-weight:700}.gs-visual-controls button:hover{background:#087e83}.gs-visual-controls a{font-size:12px;font-weight:700}.gs-visual-text{background:#f3f7f2;border:1px solid #dce8e0;border-radius:6px;padding:9px 13px;font-size:12px}.gs-visual-text summary{font-weight:700;color:#087e83}.gs-visual-figure figcaption .gs-visual-source{font-size:10px!important;line-height:1.7;margin-bottom:0}.gs-visual-takeaway{padding:20px 23px;background:#faf0d9;border-left:4px solid #bb934b;border-radius:4px;font-size:15px!important;line-height:1.7}.gs-visual-takeaway strong{color:#15334e}.gs-visual-gallery{margin:42px 0}.gs-visual-gallery>div:last-child{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.gs-visual-gallery a{display:flex;flex-direction:column;overflow:hidden;border:1px solid #d5e3da;border-radius:9px;text-decoration:none;background:white;transition:box-shadow .15s}.gs-visual-gallery a:hover{box-shadow:0 8px 20px #15334e1a}.gs-visual-gallery img{display:block;width:100%;height:190px;object-fit:contain;background:#faf7ed;border-bottom:1px solid #d5e3da}.gs-visual-gallery a>span{padding:13px 15px;font-size:12px;font-weight:700;line-height:1.5}.gs-diagram-dialog{padding:0;border:1px solid #d4dfd8;border-radius:12px;width:min(1400px,95vw);max-width:95vw;max-height:94vh;background:#faf7ed;color:#15334e;box-shadow:0 20px 80px #0006}.gs-diagram-dialog::backdrop{background:#10273bd9}.gs-diagram-dialog header{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 20px;background:#15334e;color:#fff;z-index:1}.gs-diagram-dialog header strong{font-size:14px}.gs-diagram-dialog button{background:white;color:#15334e;padding:8px 13px;border:0;border-radius:5px;font-weight:700;flex-shrink:0}.gs-diagram-dialog>div{overflow:auto;max-height:calc(94vh - 70px)}.gs-diagram-dialog img{display:block;min-width:900px;width:100%;height:auto}.gs-body[data-reading-mode="visual"] .gs-reader>.gs-lesson>:not(.gs-visual-study),.gs-body[data-reading-mode="visual"] .gs-reader>.gs-references{display:none}.gs-body[data-reading-mode="visual"] .gs-visual-study{margin-top:0}.gs-body[data-reading-mode="answer"] .gs-visual-study{display:none}@media(max-width:600px){.gs-visual-heading{padding:18px}.gs-visual-heading h2{font-size:24px}.gs-visual-figure figcaption{padding:18px}.gs-visual-gallery>div:last-child{grid-template-columns:1fr}.gs-visual-gallery img{height:auto;aspect-ratio:1.5;object-fit:contain}.gs-diagram-dialog{width:96vw;max-width:96vw}.gs-diagram-dialog header{padding:10px 12px}.gs-diagram-dialog header strong{font-size:12px}.gs-diagram-dialog button{font-size:11px}.gs-visual-takeaway{padding:17px;font-size:14px!important}}@media print{.gs-visual-scroll{overflow:visible}.gs-visual-scroll img{width:100%;min-width:0}.gs-visual-controls,.gs-diagram-dialog{display:none}.gs-visual-study{display:block!important;break-before:page}.gs-visual-figure{break-inside:avoid}.gs-visual-heading p{display:none}.gs-visual-gallery{display:none}.gs-body[data-reading-mode="visual"] .gs-reader>.gs-lesson>*{display:block}.gs-visual-figure figcaption h3{font-size:13pt}.gs-visual-figure figcaption p{font-size:9pt!important}.gs-visual-text{display:none}}
/* Illustrated poster presentation: keep the artwork at a useful reading width. */
.gs-visual-heading{background:linear-gradient(110deg,#15334e,#0d656c);border-color:#15334e;border-bottom-color:#c09b52;padding:23px 25px}.gs-visual-heading .gs-eyebrow{color:#dcc18b}.gs-visual-heading h2{color:#fff8e8}.gs-visual-heading p{color:#d6e8e1}.gs-visual-figure{border-color:#d6c69f;box-shadow:0 8px 24px #15334e0b}.gs-visual-scroll{background:#f1ead7}.gs-visual-scroll img{min-width:850px}.gs-visual-gallery img{height:auto;aspect-ratio:1.45;object-fit:contain;padding:5px;background:#f3ecd9}.gs-visual-gallery a{border-color:#d2c19a}.gs-visual-gallery a>span{background:#15334e;color:#fff6e2;border-top:3px solid #087e83}.gs-diagram-dialog{background:#fbf6e9}.gs-diagram-dialog img{min-width:1150px}@media(max-width:600px){.gs-visual-heading{padding:20px}.gs-visual-heading h2{font-size:24px}.gs-visual-scroll img{min-width:850px}.gs-diagram-dialog img{min-width:1150px}}@media print{.gs-visual-scroll img{min-width:0!important}.gs-visual-heading{background:none}.gs-visual-heading h2{color:#15334e}.gs-visual-heading .gs-eyebrow{color:#087e83}}

/* A real image (not a background) survives the browser's Background graphics setting. */
.gs-print-watermark{display:none}
@media print{
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 .gs-print-watermark img{display:block!important;width:100%!important;height:100%!important;max-width:none!important;object-fit:contain;border:0!important;margin:0!important;padding:0!important}
}