.frm-library-hero,.frm-detail-hero{background:radial-gradient(circle at 86% 18%,rgba(58,174,164,.2),transparent 27%),linear-gradient(135deg,#0b2837,#124657 65%,#8a672c);color:#fff;padding:52px 0 58px}
.frm-library-hero h1,.frm-detail-hero h1{color:#fff;font-size:clamp(38px,5vw,67px);line-height:1.08;margin:12px 0}
.frm-library-hero p,.frm-detail-hero p{color:#c7d9de;max-width:820px;line-height:1.8}
.frm-library-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.18);border-radius:14px;overflow:hidden;margin-top:34px}
.frm-library-stats div{background:rgba(4,30,40,.55);padding:18px 20px}.frm-library-stats strong{display:block;color:#f0ca76;font:900 28px var(--serif)}.frm-library-stats span{font-size:12px;color:#c9dadd}
.frm-catalogue-tools{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.frm-tools-inner{display:grid;grid-template-columns:minmax(220px,1fr) auto minmax(260px,auto);gap:14px;align-items:center;padding:14px 0}
.frm-search{display:flex;align-items:center;border:1px solid var(--line);border-radius:10px;background:#f7f9fa;padding:0 14px}.frm-search input{width:100%;border:0;background:transparent;padding:11px 0;color:var(--navy);outline:0}
.frm-part-filter{display:flex;gap:6px}.frm-part-filter button{border:1px solid var(--line);border-radius:999px;background:#fff;color:#536473;padding:9px 13px;cursor:pointer;font-weight:700}.frm-part-filter button.active{background:#124a58;border-color:#124a58;color:#fff}
.frm-topic-select{border:1px solid var(--line);border-radius:9px;background:#fff;padding:10px 12px;color:var(--navy);max-width:310px}
.frm-catalogue-summary{display:flex;justify-content:space-between;color:#6f7c87;font-size:13px;margin:0 0 18px}
.frm-topic-group{margin-bottom:40px}.frm-topic-group>header{display:flex;justify-content:space-between;align-items:end;border-bottom:2px solid #d9e0e5;padding-bottom:12px;margin-bottom:15px}.frm-topic-group>header span{color:#99722b;font-size:10px;font-weight:900;letter-spacing:1.5px}.frm-topic-group>header h2{font-size:27px;margin:2px 0}.frm-topic-group>header p{font-size:12px;color:#76838e;margin:0}.frm-topic-group>header strong{color:#35636c;font-size:13px}
.frm-module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.frm-module-card{display:flex;flex-direction:column;min-height:190px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:18px 19px;transition:.17s}.frm-module-card:hover{transform:translateY(-3px);border-color:transparent;box-shadow:0 12px 28px rgba(10,58,69,.11)}.frm-module-card>span{color:#a47a2f;font-size:9px;font-weight:900;letter-spacing:1.3px}.frm-module-card.completed>span{color:#2f8062}.frm-module-card h3{font:700 17px/1.45 var(--serif);margin:7px 0;color:var(--navy)}.frm-module-card p{color:#74808a;font-size:11px;line-height:1.6;margin:0}.frm-module-card b{margin-top:auto;padding-top:14px;color:#176170;font-size:12px}
.frm-empty{text-align:center;border:1px dashed #cbd4db;border-radius:14px;padding:60px 20px;background:#fff}.frm-empty strong{font:800 23px var(--serif);color:var(--navy)}.frm-empty p{color:#77838d}
.frm-detail-heading{display:flex;justify-content:space-between;align-items:end;gap:24px}.frm-detail-heading h1{max-width:940px;font-size:clamp(34px,4.6vw,60px)}.frm-module-code{color:#e8c067;font-size:11px;font-weight:900;letter-spacing:1.5px}.frm-complete-button{border:1px solid rgba(255,255,255,.35);border-radius:999px;background:transparent;color:#fff;padding:11px 18px;white-space:nowrap;cursor:pointer}.frm-complete-button.active{background:#2e7c61;border-color:#77c3a2}
.frm-detail-nav{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}.frm-detail-nav .wrap{display:flex;gap:24px;overflow:auto}.frm-detail-nav a{padding:15px 0;color:#526575;font-size:12px;font-weight:800;white-space:nowrap}
.frm-reading-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,.8fr);gap:28px}.frm-reading-main h2{font-size:33px;margin:11px 0}.frm-lead{font-size:17px;line-height:1.9;color:#4e6070}.frm-focus-note{border-left:5px solid #2e7d7a;background:#eef8f7;border-radius:8px;padding:16px 18px;margin-top:22px}.frm-focus-note strong{color:#17665f}.frm-focus-note p{margin:5px 0 0;color:#496965;line-height:1.7}
.frm-study-card{border:1px solid var(--line);border-radius:14px;background:#f6f9f9;padding:23px}.frm-study-card>span{color:#a17a31;font-size:10px;font-weight:900;letter-spacing:1.4px}.frm-study-card ol{padding-left:22px;color:#425666;line-height:1.9}.frm-study-card p{font-size:12px;line-height:1.7;color:#71808b;border-top:1px solid #dbe2e7;padding-top:13px}
.frm-objective-grid,.frm-concept-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.frm-objective-grid article,.frm-concept-grid article{border:1px solid var(--line);border-radius:12px;background:#fff;padding:21px}.frm-objective-grid span,.frm-concept-grid span{color:#a97e31;font:800 17px var(--serif)}.frm-objective-grid h3,.frm-concept-grid h3{font-size:18px;margin:6px 0}.frm-objective-grid p,.frm-concept-grid p{font-size:13px;line-height:1.7;color:#687681;margin:0}.frm-concept-grid{grid-template-columns:repeat(2,1fr)}
.frm-deep-dive{display:grid;gap:1px;margin-top:24px;border:1px solid var(--line);border-radius:14px;background:var(--line);overflow:hidden}.frm-deep-dive article{display:grid;grid-template-columns:90px 1fr;gap:20px;background:#fff;padding:22px 24px}.frm-deep-dive article>span{color:#2e7772;font-size:10px;font-weight:900;letter-spacing:1.4px;padding-top:5px}.frm-deep-dive h3{font-size:19px;margin:0 0 7px}.frm-deep-dive p{color:#5f6f7c;font-size:13.5px;line-height:1.8;margin:0}
.frm-traps{margin-top:20px;border-radius:12px;background:#103846;color:#fff;padding:22px 25px}.frm-traps h3{color:#efc66c}.frm-traps ul{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:12px 0 0;padding-left:18px}.frm-traps li{color:#d1e0e2;font-size:13px;line-height:1.65}
.frm-terms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.frm-terms-grid article{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px}.frm-terms-grid b{display:block;color:var(--navy);font-size:14px}.frm-terms-grid span{display:block;color:#2d7771;font-size:12px;margin-top:4px}.frm-formula-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}.frm-formula-list article{border-left:4px solid #2b7772;background:#fff;padding:17px}.frm-formula-list code{color:#123b5a;font-size:15px}.frm-formula-list p{color:#71808a;font-size:12px;margin:7px 0 0}
.frm-example-section{background:linear-gradient(135deg,#0d3441,#1a5864);color:#fff}.frm-example-section .h-sec{color:#fff}.frm-example-section .rule{background:#d4a94e}.frm-worked-example{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr);gap:24px;border:1px solid rgba(255,255,255,.18);border-radius:16px;background:rgba(255,255,255,.07);padding:28px}.frm-example-scenario span{color:#f0c976;font-size:10px;font-weight:900;letter-spacing:1.5px}.frm-example-scenario p{color:#e0e8ee;font:700 18px/1.75 var(--serif);margin:10px 0}.frm-worked-example ol{counter-reset:example-step;display:grid;gap:10px;margin:0;padding:0;list-style:none}.frm-worked-example li{counter-increment:example-step;position:relative;border-radius:10px;background:rgba(255,255,255,.09);color:#dce6ed;font-size:13px;line-height:1.7;padding:14px 16px 14px 54px}.frm-worked-example li:before{content:counter(example-step);position:absolute;left:15px;top:13px;width:25px;height:25px;border-radius:50%;background:#d5a94c;color:#102f48;text-align:center;font-weight:900;line-height:25px}.frm-worked-example li strong{display:block;color:#fff;font-size:13px}.frm-worked-example li p{color:#c7dadd;font-size:11.5px;line-height:1.65;margin:5px 0 0}.frm-example-result{grid-column:1/-1;border-left:4px solid #efc76f;background:#fff;color:var(--navy);padding:18px 20px}.frm-example-result strong{color:#28746d}.frm-example-result p{color:#526573;line-height:1.8;margin:5px 0 0}
.frm-check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.frm-check-grid details{border:1px solid var(--line);border-radius:11px;background:#fff;padding:18px}.frm-check-grid summary{color:var(--navy);font-weight:800;cursor:pointer;line-height:1.55}.frm-check-grid summary span{display:block;color:#2e7772;font:900 17px var(--serif);margin-bottom:7px}.frm-check-grid p{font-size:12.5px;line-height:1.75;color:#697985;border-top:1px solid #e3e7ea;margin:15px 0 0;padding-top:14px}.frm-check-grid p strong{color:#27736c}.frm-source-note{margin-top:20px;background:#edf7f5;border-radius:9px;padding:14px 17px;color:#4f6d68;font-size:12px;line-height:1.7}
.frm-textbook-chapters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.frm-textbook-chapters>article{display:flex;flex-direction:column;border:1px solid var(--line);border-top:5px solid #2c7b76;border-radius:14px;background:#fff;padding:25px;box-shadow:0 10px 28px rgba(8,61,69,.06)}.frm-textbook-chapters header span{color:#28766f;font-size:9px;font-weight:900;letter-spacing:1.5px}.frm-textbook-chapters h3{font-size:23px;margin:6px 0 13px}.frm-textbook-chapters>article>p{color:#536675;font-size:13.5px;line-height:1.85;margin:0 0 13px}.frm-textbook-chapters .frm-lesson-principle{color:#173f49;font:700 15px/1.85 var(--serif);border-bottom:1px solid #e2e7ea;padding-bottom:14px}.frm-lesson-application{background:#edf7f5;border-radius:10px;padding:15px 17px;margin-top:auto}.frm-lesson-application strong{display:block;color:#236f68;font-size:11px;letter-spacing:.5px}.frm-lesson-application p{color:#496864;font-size:12.5px;line-height:1.75;margin:5px 0 0}.frm-textbook-chapters footer{display:flex;justify-content:space-between;gap:18px;border-top:1px solid #e2e7ea;margin-top:16px;padding-top:13px}.frm-textbook-chapters footer b{color:#75828c;font-size:10px;text-transform:uppercase}.frm-textbook-chapters footer span{color:#1f6068;font-size:11px;text-align:right}
.frm-analysis-panel{display:grid;grid-template-columns:minmax(220px,.65fr) minmax(0,1.7fr);gap:26px;border-radius:16px;background:linear-gradient(135deg,#0d3441,#1b5963);color:#fff;margin-top:28px;padding:28px}.frm-analysis-panel>div>span{color:#efc46a;font-size:9px;font-weight:900;letter-spacing:1.5px}.frm-analysis-panel>div>h3{color:#fff;font-size:25px;margin:8px 0}.frm-analysis-panel>div>p{color:#c9dce0;font-size:12.5px;line-height:1.75}.frm-analysis-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.frm-analysis-grid article{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);border-radius:10px;padding:15px}.frm-analysis-grid article>span{color:#efc46a;font:900 14px var(--serif)}.frm-analysis-grid h4{color:#fff;font-size:15px;margin:4px 0 7px}.frm-analysis-grid p{color:#d5e3e5;font-size:11.5px;line-height:1.7;margin:0}
.frm-transfer-case{border:1px solid rgba(255,255,255,.2);border-radius:16px;background:rgba(255,255,255,.09);margin-top:20px;padding:25px 28px}.frm-transfer-case header span{color:#efc66c;font-size:9px;font-weight:900;letter-spacing:1.5px}.frm-transfer-case h3{color:#fff;font-size:24px;margin:7px 0 10px}.frm-transfer-case>p{color:#dce8ea;line-height:1.8}.frm-transfer-case ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;list-style-position:inside;padding:0}.frm-transfer-case li{background:rgba(255,255,255,.08);border-radius:10px;color:#dce8ea;font-size:12.5px;line-height:1.7;padding:14px}.frm-transfer-case details{background:#fff;border-radius:10px;color:#173f49;margin-top:14px;padding:15px 18px}.frm-transfer-case summary{cursor:pointer;font-weight:800}.frm-transfer-case details p{color:#536675;font-size:12.5px;line-height:1.8;margin:12px 0 0}
.frm-module-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px}.frm-module-pager a{border:1px solid var(--line);border-radius:12px;background:#fff;padding:18px 20px}.frm-module-pager a.next{text-align:right}.frm-module-pager span{display:block;color:#2d7771;font-size:10px;font-weight:900}.frm-module-pager b{display:block;color:var(--navy);font:700 15px/1.5 var(--serif);margin-top:5px}
@media(max-width:980px){.frm-module-grid{grid-template-columns:repeat(2,1fr)}.frm-library-stats{grid-template-columns:repeat(2,1fr)}.frm-tools-inner{grid-template-columns:1fr}.frm-reading-layout,.frm-analysis-panel{grid-template-columns:1fr}.frm-terms-grid{grid-template-columns:repeat(2,1fr)}.frm-topic-select{max-width:none}}
@media(max-width:680px){.frm-library-hero,.frm-detail-hero{padding:38px 0 44px}.frm-module-grid,.frm-objective-grid,.frm-concept-grid,.frm-check-grid,.frm-formula-list,.frm-worked-example,.frm-textbook-chapters,.frm-analysis-grid,.frm-transfer-case ol{grid-template-columns:1fr}.frm-part-filter{overflow:auto}.frm-traps ul{grid-template-columns:1fr}.frm-deep-dive article{grid-template-columns:1fr;gap:7px}.frm-detail-heading{display:block}.frm-complete-button{margin-top:18px}.frm-module-pager{grid-template-columns:1fr}.frm-module-pager a.next{text-align:left}.frm-catalogue-summary{display:block}.frm-catalogue-summary span{display:block;margin-top:5px}.frm-textbook-chapters footer{display:block}.frm-textbook-chapters footer span{display:block;text-align:left;margin-top:5px}.frm-analysis-panel{padding:22px}}