:root{--stack-blue:#0f67d8;--stack-dark:#12233f;--stack-muted:#66758b;--stack-line:#dce5ef;--stack-soft:#f5f8fc;--stack-card:#fff;--stack-green:#18794e;--stack-amber:#9a6700;--stack-orange:#b54708;--stack-red:#b42318}
*{box-sizing:border-box}.stack-main{background:linear-gradient(180deg,#f7faff 0,#fff 460px);min-height:calc(100vh - 76px);padding:42px 22px 0;color:var(--stack-dark)}.stack-wrap{max-width:1180px;margin:0 auto}.stack-breadcrumb{display:flex;gap:9px;align-items:center;color:#75839a;font-size:14px;margin-bottom:24px}.stack-breadcrumb a{color:#40658f;text-decoration:none}.stack-breadcrumb a:hover{text-decoration:underline}.stack-intro{max-width:840px;margin-bottom:28px}.stack-intro h1{font-size:clamp(34px,5vw,52px);line-height:1.05;margin:12px 0 12px;letter-spacing:-1.6px}.stack-intro p{font-size:18px;line-height:1.65;color:#586981;margin:0}.tool-status.live{display:inline-flex;align-items:center;background:#e8f7ef;color:#17643f;border:1px solid #c8ead8;border-radius:999px;padding:6px 11px;font-size:12px;font-weight:800;letter-spacing:.02em}.stack-app{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(360px,.88fr);gap:22px;align-items:start}.stack-panel,.stack-results{background:var(--stack-card);border:1px solid var(--stack-line);border-radius:18px;box-shadow:0 12px 32px rgba(37,64,99,.08)}.stack-panel{padding:25px}.panel-heading-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:20px}.stack-panel h2{font-size:24px;margin:0 0 5px}.panel-intro{margin:0;color:var(--stack-muted);line-height:1.5}.live-calc-badge{font-size:11px;font-weight:800;color:#4b6480;background:#edf3fa;border-radius:999px;padding:6px 9px;white-space:nowrap}.field-grid{display:grid;gap:14px}.primary-fields{grid-template-columns:repeat(3,minmax(0,1fr))}.stack-field{display:flex;flex-direction:column;gap:6px}.stack-field>span{font-weight:800;font-size:14px}.stack-field small{color:#7a8799;line-height:1.35;min-height:36px}.stack-field input,.stack-field select{width:100%;border:1px solid #cfd9e5;border-radius:10px;padding:12px 13px;font:inherit;color:#172c49;background:#fff;outline:none;transition:border .15s,box-shadow .15s}.stack-field input:focus,.stack-field select:focus{border-color:#458fea;box-shadow:0 0 0 3px rgba(40,123,222,.12)}.stack-field select{cursor:pointer}.chip-input::-webkit-outer-spin-button,.chip-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.chip-input[type=number]{-moz-appearance:textfield}.ante-box{margin-top:18px;border:1px solid #dfe7f0;background:#f8fbff;border-radius:14px;padding:16px}.ante-heading{display:flex;gap:16px;align-items:center;justify-content:space-between}.ante-heading h3{margin:0 0 3px;font-size:16px}.ante-heading p{margin:0;color:#748196;font-size:13px}.segmented{display:flex;background:#eaf0f7;border-radius:10px;padding:3px;gap:2px}.segmented button{border:0;background:transparent;color:#5a6c82;padding:8px 10px;border-radius:8px;font-weight:750;font-size:12px;cursor:pointer;white-space:nowrap}.segmented button.active{background:#fff;color:#175fae;box-shadow:0 1px 4px rgba(30,60,90,.12)}.ante-inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}.optional-box{margin-top:14px;border:1px solid #dfe7f0;border-radius:12px;background:#fff}.optional-box summary{padding:13px 15px;cursor:pointer;font-weight:800;color:#385675}.optional-content{display:grid;grid-template-columns:minmax(220px,1fr) 1.3fr;gap:18px;align-items:end;padding:0 15px 15px}.optional-content p{font-size:13px;color:#718097;line-height:1.5;margin:0 0 4px}.quick-examples{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-top:17px;font-size:12px;color:#78859a}.quick-examples>span{font-weight:800;color:#5b6c82}.quick-examples button{border:1px solid #d6e1ed;background:#fff;color:#31577f;border-radius:999px;padding:7px 10px;cursor:pointer;font-weight:700}.quick-examples button:hover{background:#f1f6fc}.stack-error{display:none;margin-top:14px;border:1px solid #f2c5c1;background:#fff4f3;color:#a3261d;border-radius:10px;padding:10px 12px;font-size:13px}.stack-error.show{display:block}.stack-actions{display:flex;gap:10px;margin-top:18px}.stack-actions .button{min-width:142px}.stack-results{position:sticky;top:90px;padding:22px;min-height:420px}.result-empty{min-height:370px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#7b899b;gap:6px;padding:30px}.result-empty:before{content:'M';width:54px;height:54px;border-radius:16px;background:#eaf2fc;color:#266bbb;display:grid;place-items:center;font-size:24px;font-weight:900;margin-bottom:7px}.result-empty strong{color:#324d6b;font-size:17px}.result-grid{display:none}.result-grid.show{display:block}.main-result{position:relative;border-radius:15px;background:linear-gradient(135deg,#113e76,#176ed0);color:#fff;padding:21px 22px;overflow:hidden}.main-result:after{content:'';position:absolute;width:150px;height:150px;border-radius:50%;background:rgba(255,255,255,.08);right:-54px;top:-54px}.main-result>span:first-child{display:block;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.07em;opacity:.8}.main-result>strong{display:block;font-size:42px;line-height:1;margin:8px 0}.main-result p{font-size:13px;line-height:1.45;margin:0;max-width:90%;opacity:.9}.zone-badge{display:inline-flex;margin-top:13px;border-radius:999px;background:rgba(255,255,255,.17);padding:5px 9px;font-size:11px;font-weight:850}.result-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}.result-card{border:1px solid #dfe7f0;background:#fafcff;border-radius:12px;padding:13px}.result-card>span{display:block;color:#738198;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.result-card strong{display:block;color:#183758;font-size:22px;margin:4px 0 1px}.result-card small{color:#8792a2;font-size:11px;line-height:1.3}.pressure-box{margin-top:10px;border-left:4px solid #2c7bd2;background:#f3f8fe;border-radius:10px;padding:13px 15px}.pressure-box>span{font-size:11px;font-weight:850;color:#2b689e;text-transform:uppercase;letter-spacing:.05em}.pressure-box strong{display:block;margin:4px 0;color:#1e3b5c}.pressure-box p{font-size:12px;line-height:1.48;color:#60738a;margin:0}.formula-box{margin-top:10px;border-top:1px solid #e3eaf2;padding-top:12px}.formula-box h3{font-size:13px;margin:0 0 7px;color:#4c6078}.formula-row{display:flex;justify-content:space-between;gap:16px;padding:5px 0;font-size:11px;color:#738197}.formula-row strong{text-align:right;color:#405c7b;font-weight:750}.stack-info{max-width:1180px;margin:34px auto 0;padding:0 22px 50px}.stack-info-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:18px}.stack-info-grid>div,.stack-depth-guide,.worked-example,.stack-related{border:1px solid #e0e7ef;border-radius:16px;background:#fff;padding:20px}.stack-info h2,.stack-info h3{margin:0 0 8px;color:#1c3858}.stack-info h2{font-size:21px}.stack-info h3{font-size:16px}.stack-info p{color:#64758b;line-height:1.62;margin:0;font-size:14px}.stack-depth-guide{margin-top:18px}.guide-copy{display:flex;justify-content:space-between;gap:28px;align-items:start;margin-bottom:16px}.guide-copy p{max-width:600px}.guide-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}.guide-grid>div{border-radius:11px;background:#f6f9fc;padding:12px}.guide-grid strong{display:block;font-size:16px;color:#173a5d}.guide-grid span{display:block;font-weight:850;color:#3271b2;font-size:12px;margin:2px 0 5px}.guide-grid p{font-size:11px;line-height:1.4}.worked-example,.stack-related{display:flex;justify-content:space-between;gap:22px;align-items:center;margin-top:18px}.worked-example>div,.stack-related>div:first-child{max-width:780px}.worked-example>a,.related-actions a{white-space:nowrap;color:#1269c7;font-weight:800;text-decoration:none}.worked-example>a:hover,.related-actions a:hover{text-decoration:underline}.related-actions{display:flex;flex-direction:column;align-items:flex-end;gap:7px}
@media(max-width:980px){.stack-app{grid-template-columns:1fr}.stack-results{position:static}.guide-grid{grid-template-columns:repeat(3,1fr)}.stack-info-grid{grid-template-columns:1fr}.stack-info-grid>div:first-child{grid-column:auto}}
@media(max-width:720px){.stack-main{padding:25px 14px 0}.stack-info{padding:0 14px 36px}.stack-intro h1{font-size:36px;letter-spacing:-.9px}.stack-intro p{font-size:16px}.stack-panel,.stack-results{border-radius:14px}.stack-panel{padding:17px}.panel-heading-row,.ante-heading,.guide-copy,.worked-example,.stack-related{flex-direction:column;align-items:stretch}.primary-fields,.ante-inputs,.optional-content{grid-template-columns:1fr}.stack-field small{min-height:0}.segmented{width:100%;overflow-x:auto}.segmented button{flex:1}.stack-actions{display:grid;grid-template-columns:1fr 1fr}.stack-actions .button{min-width:0}.guide-grid{grid-template-columns:repeat(2,1fr)}.related-actions{align-items:flex-start}.result-cards{grid-template-columns:1fr 1fr}}
@media(max-width:440px){.guide-grid{grid-template-columns:1fr}.result-cards{grid-template-columns:1fr}.stack-actions{grid-template-columns:1fr}.main-result>strong{font-size:36px}}