.spc{--blue:#1769e8;--blue-dark:#0d5bd7;--navy:#0d1b4c;--text:#18264b;--muted:#667694;--border:#d7e0ef;--soft:#f5f8fc;--green:#16a34a;--green-soft:#effbf3;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;max-width:1180px;margin:25px auto;color:var(--text);font-size:16px;line-height:1.4}
.spc *{box-sizing:border-box}.spc-header{display:flex;align-items:center;background:#fff;border:1px solid var(--border);border-radius:16px;padding:21px 30px;margin-bottom:18px;box-shadow:0 2px 8px rgba(20,40,80,.03)}
.spc-brand{display:flex;gap:17px;align-items:center}.spc-logo{width:58px;height:58px;border-radius:15px;background:linear-gradient(145deg,#357fe9,#0756c9);display:grid;place-items:center;flex:0 0 58px;box-shadow:0 5px 14px rgba(23,105,232,.22)}
.spc-logo svg{width:37px;height:37px;fill:none;stroke:#fff;stroke-width:2.7;stroke-linecap:round;stroke-linejoin:round}.spc-eyebrow{font-size:10px;letter-spacing:.13em;font-weight:850;color:var(--blue)}
.spc h2{margin:2px 0 3px;font-size:29px;line-height:1.1;letter-spacing:-.035em;color:var(--navy)}.spc-header p{margin:0;color:var(--muted);font-size:14px}
.spc-grid{display:grid;grid-template-columns:1fr 1.22fr;gap:18px}.spc-panel{background:#fff;border:1px solid var(--border);border-radius:16px;padding:27px 29px;box-shadow:0 3px 12px rgba(20,40,80,.025)}
.spc-section-title{display:flex;align-items:flex-start;gap:13px;margin-bottom:24px}.spc-title-icon{width:39px;height:39px;border:3px solid var(--blue);color:var(--blue);border-radius:9px;display:grid;place-items:center;font-size:20px;font-weight:800;flex:0 0 39px}
.spc-section-title h3{margin:0;color:var(--navy);font-size:21px;line-height:1.2}.spc-section-title p{margin:3px 0 0;color:var(--muted);font-size:12px}
.spc-fields{display:grid;gap:17px}.spc-field{display:block}.spc-field label{display:block;font-size:14px;font-weight:750;color:#24365c;margin-bottom:7px}.spc-field label span{font-weight:450;color:#72809b;font-size:11px}
.spc-input-row{display:grid;grid-template-columns:minmax(0,1fr) 190px}.spc-input-row input,.spc-input-row select{height:49px;border:1px solid #ccd6e6;background:#fff;color:#18264b;font-size:16px;outline:0}
.spc-input-row input{width:100%;border-radius:9px 0 0 9px;padding:0 14px}.spc-input-row select{width:100%;border-radius:0 9px 9px 0;padding:0 12px;border-left:0;cursor:pointer;color:#26365b}
.spc-primary-field .spc-input-row input:focus,.spc-primary-field .spc-input-row select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,105,232,.12);position:relative;z-index:2}
.spc-calculated-field input{background:#f2f5f9;color:#24406f;font-weight:650;cursor:default}.spc-calculated-field select{background:#fff}
.spc-calculation-hint{display:flex;gap:9px;align-items:flex-start;background:#eef5ff;border:1px solid #d4e4ff;border-radius:9px;padding:11px 12px;margin-top:18px;color:#4d6389;font-size:11px}.spc-calculation-hint span{color:var(--green);font-size:16px;line-height:1}
.spc-calculation-hint strong{color:#244276}.spc-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.spc-btn{height:48px;border-radius:9px;font-weight:800;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.15s ease}
.spc-btn-primary{background:linear-gradient(135deg,#2879ef,#1261db);color:#fff;box-shadow:0 5px 12px rgba(23,105,232,.16)}.spc-btn-primary:hover{transform:translateY(-1px)}.spc-btn-secondary{background:#f4f7fb;color:#25375d;border-color:#d3dcea}
.spc-examples{border:1px solid #dfe5ee;border-radius:10px;margin-top:20px;padding:14px}.spc-examples-title{font-weight:800;font-size:13px;margin-bottom:10px}.spc-example-list{display:flex;gap:8px;flex-wrap:wrap}
.spc-example-list button{border:1px solid #d6deea;background:#fff;color:#25375d;border-radius:8px;padding:8px 11px;font-size:12px;cursor:pointer}.spc-example-list button:hover{border-color:#9bb7e8;background:#f7faff}.spc-example-list small{color:var(--blue);font-weight:800}
.spc-status{min-height:18px;color:#b42318;font-size:12px;margin-top:10px}.spc-visual-panel{padding-bottom:23px}.spc-visual-title{margin-bottom:13px;align-items:center}
.spc-diagram-wrap{background:linear-gradient(180deg,#f7fbff,#f8fbfe);border-radius:11px;padding:5px;overflow:hidden;border:1px solid #edf2f8}.spc-diagram{width:100%;height:auto;display:block;min-height:270px}
.spc-land{fill:#edf4f2}.spc-fill{fill:rgba(40,121,239,.12)}.spc-run-line{stroke:#71809a;stroke-width:2}.spc-rise-line{stroke:#172d65;stroke-width:2.5}.spc-slope-line{stroke:#084cae;stroke-width:3.5}
.spc-dimension{stroke:#1b273c;stroke-width:1.4;stroke-dasharray:5 5}.spc-angle-arc{fill:none;stroke:#1a68df;stroke-width:2}.spc-point{fill:#fff;stroke:#1559c5;stroke-width:2.5}
.spc-diagram text{font-family:Inter,Arial,sans-serif;fill:#132c61}.spc-slope-label{font-size:16px;font-weight:800}.spc-rise-label,.spc-run-label{font-size:14px;font-weight:700}.spc-angle-label{font-size:13px;font-weight:800;fill:#1a62d0!important}
.spc-result-box{margin-top:14px;background:var(--green-soft);border:1px solid #cdeed7;border-radius:11px;padding:13px}.spc-result-heading{display:flex;align-items:center;gap:10px;margin-bottom:11px}
.spc-check{width:30px;height:30px;border-radius:50%;background:#19a54b;color:#fff;display:grid;place-items:center;font-weight:900;font-size:17px}.spc-result-heading strong{display:block;color:#14883e;font-size:17px}.spc-result-heading small{display:block;color:#66816f;font-size:11px}
.spc-results{display:grid;grid-template-columns:repeat(6,1fr);gap:7px}.spc-results>div{background:#fff;border:1px solid #d9e9de;border-radius:8px;padding:10px 7px;text-align:center;min-width:0}.spc-results span{display:block;color:#687795;font-size:10px}.spc-results strong{display:block;color:#145bd3;font-size:14px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.spc-formulas{margin-top:14px;background:#f1f7ff;border:1px solid #cfe2ff;border-radius:11px;padding:14px}.spc-formula-heading{display:flex;gap:9px;align-items:center;color:#155dd0;font-size:15px;margin-bottom:11px}.spc-formula-heading span{background:#1a6fe8;color:#fff;border-radius:5px;padding:3px 7px}
.spc-formula-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 25px;color:#243e75;font-size:12px}.spc-note{margin-top:15px;padding:12px 17px;border:1px solid #e6eaf0;border-radius:10px;background:#fbfcfe;color:#687795;font-size:12px}.spc-note strong{color:#293d66}
@media(max-width:1000px){.spc-grid{grid-template-columns:1fr}.spc-results{grid-template-columns:repeat(3,1fr)}}@media(max-width:650px){.spc-header{padding:18px}.spc-brand{gap:11px}.spc-logo{width:48px;height:48px;flex-basis:48px}.spc h2{font-size:22px}.spc-panel{padding:21px 18px}.spc-input-row{grid-template-columns:1fr}.spc-input-row input{border-radius:9px 9px 0 0}.spc-input-row select{border-radius:0 0 9px 9px;border-left:1px solid #ccd6e6;border-top:0}.spc-actions{grid-template-columns:1fr}.spc-results{grid-template-columns:repeat(2,1fr)}.spc-formula-grid{grid-template-columns:1fr}}@media(max-width:420px){.spc-results{grid-template-columns:1fr 1fr}.spc-diagram{min-height:210px}}