/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.relative{position:relative}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.grid{display:grid}.table{display:table}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}}:root{--ink:#152833;--slate:#28434d;--teal:#0b827d;--pale:#e8f3f2;--paper:#f5f7f6;--line:#cfdddf}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}button,input{font:inherit}button:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline-offset:3px;outline:3px solid #69d3d0}header{background:linear-gradient(90deg,#0000 55%,#58c5be17);max-width:1240px;margin:auto;padding:32px 32px 22px}.top{justify-content:space-between;align-items:center;display:flex}.brand{color:var(--ink);letter-spacing:-.04em;align-items:center;gap:14px;font-size:clamp(1.6rem,3vw,2.65rem);font-weight:800;text-decoration:none;display:flex}.brand i{color:#1aa9b4;width:48px;height:48px;box-shadow:0 0 0 3px var(--teal);border:8px solid #d5f3f3;border-radius:50%;place-items:center;font-size:.7rem;font-style:normal;display:grid}.top>a:last-child{color:var(--slate);font-weight:700;text-decoration:none}header p{color:#4d6872;margin:8px 0 0 62px;font-size:1.08rem}nav{grid-template-columns:repeat(4,1fr);max-width:1240px;margin:auto;padding:0 32px;display:grid}nav button{border:1px solid var(--line);min-height:68px;color:var(--ink);cursor:pointer;background:#ffffffc9;font-weight:750}nav button:first-child{border-radius:12px 0 0}nav button:last-child{border-radius:0 12px 0 0}nav b{margin-right:10px;font-size:1.25rem}.on{color:#fff!important;background:linear-gradient(135deg,var(--teal),#0a9994)!important;border-color:var(--teal)!important}.work{background-image:linear-gradient(#14787d09 1px,#0000 1px),linear-gradient(90deg,#14787d09 1px,#0000 1px);background-size:28px 28px;grid-template-columns:230px minmax(0,1fr);gap:22px;max-width:1240px;margin:auto;padding:28px 32px 38px;display:grid}small{color:var(--teal);text-transform:uppercase;letter-spacing:.12em;font-size:.7rem;font-weight:800}aside{align-self:start;padding:22px 0}aside h2{margin:6px 0 16px;font-size:1.05rem}aside button{text-align:left;color:#516b73;cursor:pointer;background:0 0;border:0;border-left:3px solid #0000;justify-content:space-between;width:100%;padding:13px 14px;font-weight:650;display:flex}.sel{box-shadow:0 5px 16px #1528330f;border-left-color:var(--teal)!important;color:var(--ink)!important;background:#fff!important}article{background:#fffffff5;border:1px solid #d6e1e2;border-radius:16px;padding:30px;box-shadow:0 12px 30px #15283314}.title{align-items:center;gap:16px;margin-bottom:26px;display:flex}.title>i{border:2px solid var(--teal);width:52px;height:52px;color:var(--teal);border-radius:50%;place-items:center;font-size:1.45rem;font-style:normal;display:grid}.title h1{letter-spacing:-.035em;margin:4px 0 0;font-size:clamp(1.65rem,3vw,2.35rem)}.grid{grid-template-columns:minmax(300px,.88fr) minmax(340px,1.12fr);gap:34px;display:grid}.grid form{border-right:1px solid var(--line);padding-right:34px}.fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 14px;display:grid}.fields label>span{margin-bottom:7px;font-size:.86rem;font-weight:700;display:block}.fields label>div{background:#fff;border:1px solid #bfcfd2;border-radius:9px;display:flex;overflow:hidden}.fields input{border:0;outline:0;width:100%;min-width:0;padding:12px;font-weight:650}.fields label b{color:#526a72;white-space:nowrap;background:#f4f7f7;border-left:1px solid #d9e3e4;align-items:center;padding:0 11px;font-size:.76rem;display:flex}.actions{gap:10px;margin-top:24px;display:flex}.actions button{cursor:pointer;border-radius:8px;min-height:46px;padding:0 20px;font-weight:750}.actions button:first-child{color:#fff;border:1px solid var(--teal);background:var(--teal);flex:1}.actions button:last-child{color:var(--teal);border:1px solid var(--teal);background:#fff}.rh{justify-content:space-between;align-items:start;gap:12px;margin-bottom:16px;display:flex}.rh h2{margin:4px 0 0;font-size:1.35rem}.rh em{color:var(--teal);background:var(--pale);border-radius:99px;padding:6px 9px;font-size:.68rem;font-style:normal;font-weight:750}.tiles{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;display:grid}.tiles>div{border:1px solid #b9dedd;border-left:4px solid var(--teal);background:linear-gradient(135deg,#f2fbfb,#e6f4f3);border-radius:10px;min-width:0;padding:16px}.tiles span{color:#4f6970;margin-bottom:7px;font-size:.78rem;display:block}.tiles strong{color:#087973;letter-spacing:-.03em;overflow-wrap:anywhere;font-size:clamp(1.2rem,2.2vw,1.8rem);display:block}.tiles i{color:var(--ink);letter-spacing:0;font-size:.7rem;font-style:normal}.empty{text-align:center;color:#637a81;background:#f5faf9;border:1px dashed #aacdcb;border-radius:10px;align-content:center;place-items:center;min-height:180px;padding:20px;display:grid}.empty>b{color:var(--teal);font-size:2rem}details{border-top:1px solid var(--line);color:#557078;margin-top:15px;padding-top:13px;font-size:.8rem}summary{cursor:pointer;color:var(--teal);font-weight:750}details p{line-height:1.6}.trust{background:var(--slate);color:#fff;grid-template-columns:repeat(4,1fr);padding:24px max(32px,50% - 588px);display:grid}.trust>div{border-right:1px solid #ffffff40;align-items:center;gap:13px;padding:0 20px;display:flex}.trust>div:last-child{border:0}.trust div>b{color:#9de7e0;border:2px solid #88ded7;border-radius:50%;place-items:center;min-width:43px;height:43px;display:grid}.trust span{color:#d3e0e3;font-size:.72rem;line-height:1.45}.trust strong{color:#fff;font-size:.83rem;display:block}footer{color:#536b73;justify-content:space-between;gap:40px;max-width:1176px;margin:auto;padding:42px 32px 54px;display:flex}footer div{max-width:720px}footer h2{color:var(--ink);margin:0 0 8px;font-size:1.1rem}footer p{margin:0;font-size:.86rem;line-height:1.65}footer a{color:var(--teal);font-weight:700}@media (width<=900px){.work{grid-template-columns:1fr}aside{flex-wrap:wrap;gap:7px;padding:5px 0;display:flex}aside small,aside h2{width:100%}aside button{border:1px solid var(--line);border-radius:8px;width:auto}.grid{grid-template-columns:1fr}.grid form{border-right:0;border-bottom:1px solid var(--line);padding:0 0 26px}.trust{grid-template-columns:repeat(2,1fr);gap:22px}.trust>div:nth-child(2){border:0}}@media (width<=620px){header{padding:22px 18px 18px}.brand{font-size:1.42rem}.brand i{border-width:6px;width:38px;height:38px}header p{margin-left:0;font-size:.9rem}nav{grid-template-columns:repeat(2,1fr);padding:0 18px}nav button{min-height:54px}.work{padding:20px 18px 30px}article{padding:21px 17px}.title>i{display:none}.fields,.tiles{grid-template-columns:1fr}.trust{grid-template-columns:1fr;padding:25px 18px}.trust>div{border:0;padding:0}footer{flex-direction:column;padding:32px 18px}.actions button{padding:0 14px}}.actions button:first-child:disabled{opacity:.45;cursor:not-allowed}.instruction{border-left:3px solid var(--teal);color:#4c686f;background:#eef8f7;margin:0 0 18px;padding:11px 13px;font-size:.8rem;line-height:1.5}.conversion-note{border:1px solid #b9dedd;border-left:4px solid var(--teal);color:#4f6970;background:linear-gradient(135deg,#f2fbfb,#e6f4f3);border-radius:10px;padding:15px 16px}.conversion-note>b{color:var(--ink)}.conversion-note p{margin:5px 0 0;font-size:.8rem}.formula{background:#f8fbfb;border-radius:8px;margin-top:10px;padding:10px 12px}.formula p{margin:5px 0;line-height:1.55}.formula sub,.formula sup{line-height:0}.brand{background:var(--brand-aqua);border-radius:8px;flex-direction:column;align-items:stretch;width:clamp(330px,45vw,540px);padding:20px 24px 18px;display:flex}.brand-name{color:#050505;letter-spacing:-.055em;white-space:nowrap;font-size:clamp(2rem,4.2vw,4.15rem);font-weight:800;line-height:1}.brand-tagline{grid-template-columns:52px minmax(0,1fr) 52px;align-items:center;gap:12px;margin-top:18px;display:grid}.brand-tagline i{text-align:center;font-size:2rem;font-style:normal}.brand-tagline em{color:#102a33;text-align:center;letter-spacing:0;font-size:clamp(.75rem,1.45vw,1.1rem);font-style:normal;font-weight:650;line-height:1.25}.about-button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:10px 15px;display:none;box-shadow:0 3px 10px #1528330d}.created-by{margin-top:12px!important}.tiles strong{font-variant-numeric:tabular-nums;font-size:clamp(1.05rem,1.65vw,1.5rem);line-height:1.15}.tiles i{margin-top:4px;line-height:1.2;display:block}@media (width<=620px){.about-button{padding:8px 11px;display:block}header{padding-top:16px;padding-bottom:16px}}:root{--teal:#128ca1;--pale:#dff5f9;--paper:#e9f8fa;--line:#b9dfe6;--brand-aqua:#61cfee;--brand-peach:#f6c6a6}header{background:linear-gradient(90deg,#61cfee1f,#ffffffdb)}.on{background:linear-gradient(135deg,#1daac0,#5acbe8)!important;border-color:#1daac0!important}.work{background-color:#e1f6f9b3}article{border-color:#acdce5}.grid form{background:linear-gradient(145deg,#fff5ee,#f9d9c4);border:1px solid #efc2a5;border-radius:12px;padding:22px}.fields label>div{border-color:#d6aa90}.fields label b{background:#fff8f3;border-left-color:#e7c5b1}.actions button:first-child{background:#1498ad;border-color:#1498ad}.actions button:last-child{color:#117f93;border-color:#1498ad}.tiles>div{background:linear-gradient(135deg,#f2faf3,#dcefe1);border-color:#9ccdad #9ccdad #9ccdad #3f8f60}.tiles strong{color:#286b45}.conversion-note{background:linear-gradient(135deg,#e5f9fd,#cceff6);border-color:#8fd1de #8fd1de #8fd1de #1498ad}.formula{background:#fff3eb;border:1px solid #f0cdb8}.trust{background:linear-gradient(90deg,#214957,#2c6472)}@media (width<=620px){header{background:var(--brand-aqua);max-width:none;padding:0 0 44px}.top{width:100%;display:block;position:relative}.brand{border-radius:0;width:100%;padding:16px 18px 14px;display:flex}.brand-name{font-size:clamp(2rem,10vw,3.3rem)}.brand-tagline{grid-template-columns:40px minmax(0,1fr) 40px;gap:7px;margin-top:12px}.brand-tagline i{font-size:1.55rem}.brand-tagline em{font-size:clamp(.67rem,3vw,.9rem)}.about-button{background:#fff;padding:7px 11px;display:block;position:absolute;bottom:-36px;right:14px}nav{padding:0}nav button:first-child,nav button:last-child{border-radius:0}.grid form{padding:18px 15px}}.economic-work{max-width:1440px}.economic-work article{min-width:0}.econ-notice{border-left:4px solid var(--teal);color:#496770;background:#eef9fb;border-radius:8px;margin:0 0 18px;padding:13px 15px;font-size:.84rem}.econ-layout{grid-template-columns:minmax(360px,.82fr) minmax(420px,1.18fr);align-items:start;gap:22px;display:grid}.econ-inputs,.econ-output>.results,.econ-table-card,.econ-formulas{border:1px solid var(--line);background:#fff;border-radius:12px;padding:20px}.econ-inputs{background:linear-gradient(145deg,#fff8f3,#f8d8c3);border-color:#efc2a5}.econ h2{margin:0 0 14px;font-size:1.2rem}.econ h3{margin:22px 0 10px;font-size:.96rem}.mode-switch{background:#e5eef0;border-radius:10px;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:18px;padding:4px;display:grid}.mode-switch button{color:#4c6870;cursor:pointer;background:0 0;border:0;border-radius:7px;padding:10px 8px;font-weight:750}.mode-switch .active{color:var(--teal);background:#fff;box-shadow:0 2px 8px #15333b18}.econ-field-pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;display:grid}.econ-field-pair label>span,.condition-row label>span{margin-bottom:5px;font-size:.79rem;font-weight:750;display:block}.econ-field-pair label>span small{color:#6f7778;margin-top:2px;font-weight:500;display:block}.econ-field-pair label>div,.condition-row label>div{background:#fff;border:1px solid #d6aa90;border-radius:8px;display:flex;overflow:hidden}.econ-field-pair input,.condition-row input{background:0 0;border:0;outline:0;width:100%;min-width:0;padding:10px;font-weight:650}.econ-field-pair label b,.condition-row label b{color:#526a72;white-space:nowrap;background:#fff8f3;border-left:1px solid #e7c5b1;align-items:center;padding:0 9px;font-size:.68rem;display:flex}.econ-field-pair .default-input{background:#e6f5ff;border-color:#80bcd8}.condition-head{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.condition-head button{border:1px solid var(--teal);color:var(--teal);cursor:pointer;background:#fff;border-radius:7px;padding:6px 9px;font-weight:700}.condition-row{grid-template-columns:1fr 1fr 34px;align-items:end;gap:8px;margin-bottom:9px;display:grid}.condition-row>button{color:#49636a;cursor:pointer;background:#e8edef;border:0;border-radius:7px;height:39px;font-size:1.2rem}.condition-row>button:disabled{opacity:.35}.hours-total{margin:12px 0 2px;font-size:.82rem}.hours-guidance{color:#64777b;margin:4px 0 0;font-size:.72rem;line-height:1.45}.hours-error{color:#9b2c20!important}.econ-inputs input[aria-invalid=true]{background:#fff0ed}.econ-inputs .actions{grid-template-columns:1fr 1fr;margin-top:20px;display:grid}.econ-inputs .actions button:first-child{grid-column:1/-1}.econ-inputs .actions button:nth-child(2),.econ-inputs .actions button:nth-child(3){color:var(--teal);border:1px solid var(--teal);background:#fff}.econ-foot{color:#62767b;font-size:.72rem;line-height:1.5}.econ-summary{grid-template-columns:repeat(3,1fr);gap:9px;display:grid}.econ-summary>div{border:1px solid var(--line);background:#f4f8f8;border-radius:9px;padding:13px}.econ-summary>.best{background:#e6f5ea;border-color:#9dceb0}.econ-summary span,.econ-summary small{color:#5a7077;font-size:.68rem;display:block}.econ-summary strong{color:var(--ink);margin:5px 0;font-size:1.22rem;display:block}.result-sentence{font-size:.78rem}.econ-chart{margin-top:12px;overflow:hidden}.econ-chart svg{width:100%;height:auto;min-height:240px;display:block}.econ-chart svg line{stroke:#d3dfe1;stroke-width:1px}.econ-chart svg text{fill:#61767c;font-size:10px}.econ-chart svg path{fill:none;stroke-width:3px}.econ-chart .capital-line{stroke:#4679a3}.econ-chart .energy-line{stroke:#bf6b35}.econ-chart .total-line{stroke:#2f7c4f}.econ-chart svg .best-line{stroke:#2f7c4f;stroke-dasharray:5 4;stroke-width:2px}.econ-legend{color:#5d7076;flex-wrap:wrap;gap:14px;font-size:.68rem;display:flex}.econ-legend i{border-radius:50%;width:10px;height:10px;margin-right:4px;display:inline-block}.capital-dot{background:#4679a3}.energy-dot{background:#bf6b35}.total-dot{background:#2f7c4f}.econ-table-card{margin-top:18px}.econ-table-wrap{overflow:auto}.econ table{border-collapse:collapse;width:100%;min-width:1050px;font-size:.73rem}.econ th,.econ td{border-bottom:1px solid var(--line);text-align:right;white-space:nowrap;padding:8px 9px}.econ th:first-child,.econ td:first-child,.econ th:last-child,.econ td:last-child{text-align:left}.econ thead{background:#eff5f5}.econ .best-row{background:#e6f5ea}.econ .fail-row{color:#765953;background:#fff8f7}.econ-formulas{margin-top:18px}.econ-formulas summary{color:var(--teal);cursor:pointer;font-weight:750}.econ-formulas .formula{margin-top:12px}.econ>.econ-notice:last-child{background:#fff8e6;border-left-color:#d89a20;margin:18px 0 0}.economic-work article{padding:26px}@media (width<=1100px){.econ-layout{grid-template-columns:1fr}.econ-summary{grid-template-columns:repeat(3,1fr)}}@media (width<=700px){.economic-work article{padding:20px 15px}.econ-field-pair,.econ-summary{grid-template-columns:1fr}.condition-row{grid-template-columns:1fr 1fr 32px}.mode-switch{grid-template-columns:1fr}.econ-inputs,.econ-output>.results,.econ-table-card,.econ-formulas{padding:15px}.econ-chart svg{min-width:580px}.econ-chart{overflow-x:auto}}.flow-reset{border:1px solid var(--teal);color:var(--teal);cursor:pointer;background:#fff;border-radius:7px;margin:13px 0 0 auto;padding:8px 12px;font-weight:750;display:block}.planning-result-notice{color:#5f544d;background:#fff8e6;border:1px solid #ecd39b;border-left:4px solid #d89a20;border-radius:8px;margin:14px 0 0;padding:12px 14px;font-size:.82rem;line-height:1.5}.planning-result-notice b{color:#6f4b18}.fields label>span small{color:#6f7778;text-transform:none;letter-spacing:0;margin-top:3px;font-size:.67rem;font-weight:500;display:block}.fields label>div.default-field{background:#e6f5ff;border-color:#80bcd8}.fields label>div.default-field b{background:#f0f9ff;border-left-color:#a8d1e4}.default-notice{border-left:4px solid var(--teal);color:#496770;background:#eef9fb;border-radius:7px;margin:0 0 18px;padding:11px 13px;font-size:.8rem;line-height:1.45}.three-actions{grid-template-columns:1fr 1fr;display:grid}.three-actions button:first-child{grid-column:1/-1}.three-actions button:nth-child(2),.three-actions button:nth-child(3){color:var(--teal);border:1px solid var(--teal);background:#fff}.three-actions button:last-child{color:var(--teal)}.unit-switch{background:#e5eef0;border-radius:9px;grid-template-columns:1fr 1fr;gap:4px;margin:0 0 16px;padding:4px;display:inline-grid}.unit-switch button{color:#4c6870;cursor:pointer;background:0 0;border:0;border-radius:6px;min-width:78px;padding:8px 14px;font-weight:750}.unit-switch button.active{color:var(--teal);background:#fff;box-shadow:0 2px 8px #15333b18}.pipe-size-conclusion{background:#e6f5ea;border:1px solid #9dceb0;border-left:5px solid #2f7c4f;border-radius:10px;margin-top:14px;padding:17px 18px}.pipe-size-conclusion small{color:#2f7c4f}.pipe-size-conclusion h3{color:#205f3c;margin:5px 0 13px;font-size:1.35rem}.pipe-size-conclusion dl{grid-template-columns:1fr 1fr;gap:9px;margin:0;display:grid}.pipe-size-conclusion dl>div{background:#ffffffa8;border-radius:7px;padding:10px}.pipe-size-conclusion dt{color:#5a7077;font-size:.7rem}.pipe-size-conclusion dd{margin:4px 0 0;font-size:.88rem;font-weight:750}.pipe-size-conclusion p{color:#456158;margin:13px 0 0;font-size:.76rem;line-height:1.55}@media (width<=620px){.pipe-size-conclusion dl{grid-template-columns:1fr}}.calculator-description{border:1px solid #b9dfe6;border-left:5px solid var(--teal);color:#425f68;background:#f5fbfc;border-radius:10px;max-width:1176px;margin:22px auto 0;padding:17px 20px}.calculator-description p{margin:0;font-size:.9rem;line-height:1.6}.calculator-description .description-note{border-top:1px solid #cde4e8;margin-top:10px;padding-top:10px;font-size:.82rem}.calculator-description .description-note b{color:#244f5b}@media (width<=620px){.calculator-description{margin:16px 18px 0;padding:14px 15px}.calculator-description p{font-size:.84rem}}nav{grid-template-columns:repeat(5,1fr)}.home{max-width:1240px;margin:auto;padding:42px 32px 50px}.home-intro{background:linear-gradient(135deg,#fff 0%,#e8f8fb 100%);border:1px solid #a9dae3;border-radius:18px;max-width:820px;padding:42px 44px;box-shadow:0 14px 36px #173b4514}.home-intro h1{letter-spacing:-.055em;max-width:680px;margin:8px 0 13px;font-size:clamp(2.1rem,5vw,4rem);line-height:1.02}.home-intro p{color:#4c6870;max-width:650px;margin:0;font-size:1.06rem;line-height:1.65}.home-intro button{background:var(--teal);color:#fff;cursor:pointer;border:0;border-radius:9px;margin-top:24px;padding:13px 18px;font-weight:800}.home-intro button b{margin-left:9px}.accuracy-note{color:#5f544d;background:#fff7ef;border:1px solid #efc6aa;border-left:5px solid #d8874e;border-radius:10px;align-items:center;gap:16px;margin:24px 0 0;padding:16px 19px;display:flex}.accuracy-note b{color:#6f4124;white-space:nowrap}.accuracy-note span{font-size:.88rem;line-height:1.5}.calculator-directory{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:18px;display:grid}.category-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:25px;box-shadow:0 8px 24px #173b450d}.category-heading{align-items:center;gap:13px;display:flex}.category-heading i{width:44px;height:44px;color:var(--teal);background:#dff5f9;border-radius:50%;place-items:center;font-size:1.25rem;font-style:normal;font-weight:800;display:grid}.category-heading h2{margin:3px 0 0;font-size:1.32rem}.category-card>p{color:#587179;min-height:48px;margin:14px 0 16px;font-size:.86rem;line-height:1.55}.calculator-links{gap:8px;margin-top:18px;display:grid}.calculator-links button{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:#f4fbfc;border:1px solid #c8e2e7;border-radius:8px;justify-content:space-between;align-items:center;padding:12px 13px;font-weight:700;display:flex}.calculator-links button:hover{border-color:var(--teal);background:#e5f7fa}.calculator-links button b{color:var(--teal);font-size:1.2rem}@media (width<=900px){nav{grid-template-columns:repeat(3,1fr)}.calculator-directory{grid-template-columns:1fr}.category-card>p{min-height:0}}@media (width<=620px){nav{grid-template-columns:repeat(2,1fr)}.home{padding:24px 18px 34px}.home-intro{padding:28px 22px}.home-intro h1{font-size:2.25rem}.accuracy-note{flex-direction:column;align-items:flex-start;gap:5px}.category-card{padding:20px 17px}}.title{flex-wrap:wrap}.title .calculator-description{flex:1 0 100%;max-width:none;margin:2px 0 0;padding:17px 20px}.about-button{display:block}@media (width<=620px){.title .calculator-description{margin:0;padding:14px 15px}}.about-page{max-width:980px;margin:auto;padding:46px 32px 60px}.about-card{background:#fffffff2;border:1px solid #acdce5;border-radius:16px;padding:40px 42px;box-shadow:0 12px 30px #15283314}.about-card h1{letter-spacing:-.045em;margin:6px 0 22px;font-size:clamp(2rem,5vw,3.5rem)}.about-card p{color:#425f68;font-size:1rem;line-height:1.75}.about-card .about-credentials{border:1px solid #b9dfe6;border-left:5px solid var(--teal);background:#f5fbfc;border-radius:10px;margin:25px 0;padding:20px 22px}.about-card a{color:var(--teal);font-weight:750}.about-actions{gap:12px;margin-top:28px;display:flex}.about-actions a{border-radius:8px;padding:12px 16px;text-decoration:none}.about-actions a:first-child{background:var(--teal);color:#fff}.about-actions a:last-child{border:1px solid var(--teal);background:#fff}@media (width<=620px){.about-page{padding:24px 18px 38px}.about-card{padding:27px 21px}.about-actions{flex-direction:column}.about-actions a{text-align:center}}.site-footer{border-top:1px solid var(--line);align-items:center;padding-top:28px;padding-bottom:34px}.site-footer>p:last-child{text-align:right}@media (width<=620px){.site-footer{gap:7px}.site-footer>p:last-child{text-align:left}}:root{--navy:#123746;--blue:#087f9a;--blue-strong:#066b82;--aqua:#e7f7fa;--green:#287a55;--surface:#fff;--surface-soft:#f4fafb;--shadow:0 10px 30px #1237461a}body{color:var(--navy);background:linear-gradient(#edfafd 0,#f8fbfc 40%,#fff 100%);font-size:16px}button,a,summary{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button:active,.calculator-links button:active,.about-actions a:active{filter:brightness(.97);transform:translateY(1px)}header{background:0 0;max-width:1240px;padding:22px 28px 18px}.brand{background:linear-gradient(135deg,#68d6ef,#8ce0ee);border-radius:12px;width:auto;min-width:330px;padding:15px 18px 13px;box-shadow:0 8px 22px #087f9a24}.brand-name{color:#082d3b;font-size:clamp(1.75rem,3.7vw,3.35rem)}.brand-tagline{grid-template-columns:34px minmax(0,1fr) 34px;gap:8px;margin-top:10px}.brand-tagline i{font-size:1.35rem}.brand-tagline em{font-size:clamp(.72rem,1.2vw,.95rem)}.about-button{border-color:#a8d7e0;justify-content:center;align-items:center;min-height:44px;padding:0 16px;display:inline-flex;color:var(--blue-strong)!important}nav{gap:6px;padding:0 28px 8px}nav button{min-height:52px;font-size:.9rem;transition:background-color .16s,transform .12s;border-radius:10px!important}.home{padding:18px 28px 44px}.home-intro{max-width:none;box-shadow:var(--shadow);background:linear-gradient(120deg,#fff 0,#effbfc 72%,#dcf3f7 100%);border-radius:16px;padding:24px 28px}.home-intro h1{margin:5px 0 7px;font-size:clamp(1.9rem,4vw,3.2rem)}.home-intro p{font-size:1rem;line-height:1.45}.calculator-directory{gap:16px;margin-top:16px}.category-card{border-radius:16px;padding:20px;box-shadow:0 8px 24px #12374612}.category-select{border:1px solid var(--line);width:100%;min-height:138px;color:var(--navy);font:inherit;text-align:left;cursor:pointer;background:#fff;grid-template-rows:auto auto;grid-template-columns:minmax(0,1fr) auto;transition:border-color .16s,background-color .16s,transform .12s;display:grid;position:relative}.category-select .category-heading{grid-column:1}.category-select>p{color:#587179;grid-column:1;margin:12px 0 0;font-size:.9rem;line-height:1.45}.category-arrow{color:var(--blue);grid-area:1/2/3;align-self:center;padding-left:18px;font-size:2rem}.category-select:hover,.category-select:focus-visible{border-color:var(--blue);background:#f5fcfd}.category-heading i{width:40px;height:40px;color:var(--blue);background:#e2f6f8}.calculator-links{gap:9px;margin-top:14px}.calculator-links button{background:#f8fcfd;border-color:#c9e4e9;border-radius:11px;grid-template-columns:32px minmax(0,1fr) 18px;gap:10px;min-height:64px;padding:10px 12px;transition:border-color .16s,background-color .16s,transform .12s;display:grid}.calculator-links button>i{width:30px;height:30px;color:var(--blue);background:#e1f5f8;border-radius:9px;place-items:center;font-style:normal;font-weight:800;display:grid}.calculator-links button>span{min-width:0}.calculator-links button strong{font-size:.92rem;line-height:1.2;display:block}.calculator-links button small{color:#617880;text-transform:none;letter-spacing:0;margin-top:3px;font-size:.75rem;font-weight:500;line-height:1.3;display:block}.calculator-links button>b{justify-self:end}.calculator-links button:hover,.calculator-links button:focus-visible{border-color:var(--blue);background:#edf9fb}.accuracy-note{margin-top:18px}.work{gap:18px;padding:20px 28px 38px}aside button{border-radius:9px;min-height:46px}article{box-shadow:var(--shadow);border-radius:18px;padding:26px}.title{margin-bottom:20px}.title h1{font-size:clamp(1.55rem,3vw,2.25rem)}.title .calculator-description{border-left-color:var(--blue);background:#f2fafb;border-radius:10px}.grid{gap:22px}.grid form{background:linear-gradient(145deg,#fff9f5,#fde9dc);border-radius:14px;padding:20px}.fields{gap:16px 12px}.fields label>span,.econ-field-pair label>span,.condition-row label>span{font-size:.88rem}.fields label>div,.econ-field-pair label>div,.condition-row label>div{border-radius:10px;min-height:48px;box-shadow:inset 0 1px 2px #1237460a}.fields input,.econ-field-pair input,.condition-row input{font-variant-numeric:tabular-nums;min-height:48px;padding:12px 13px;font-size:1rem}.fields label b,.econ-field-pair label b,.condition-row label b{font-size:.76rem}.unit-switch{width:100%;max-width:260px}.unit-switch button{min-height:42px}.actions button{border-radius:10px;min-height:48px;transition:transform .12s,filter .12s}.results{min-width:0}.tiles{gap:10px}.tiles>div{border-radius:12px;padding:14px}.tiles span{font-size:.78rem}.tiles strong{font-size:clamp(1.15rem,2vw,1.55rem)}.tiles>div:first-child{border-left-width:5px}.empty{min-height:150px}details summary{align-items:center;min-height:44px;display:flex}.advanced-options{background:#fff;border:1px solid #c5dfe4;border-radius:11px;margin:18px 0 0;padding:0}.advanced-options summary{color:var(--blue-strong);padding:11px 13px}.advanced-options summary span{color:#6b7f84;margin-left:8px;font-size:.75rem;font-weight:500}.advanced-options[open]{padding:0 13px 14px}.advanced-options[open] summary{border-bottom:1px solid #d8e8eb;margin:0 -13px 8px}.econ-layout{gap:16px}.econ-inputs,.econ-output>.results,.econ-table-card,.econ-formulas{border-radius:14px;box-shadow:0 6px 20px #1237460f}.econ-summary>div{border-radius:11px}.econ-summary>.best{border-left:5px solid var(--green)}.econ-chart{width:100%;overflow:hidden}.econ-chart svg{aspect-ratio:460/300;width:100%;min-width:0;min-height:0}.econ-chart svg text{font-size:11px}.econ-chart .best-point{fill:#fff;stroke:#287a55;stroke-width:3px}.econ-chart svg .best-label{fill:#236d4c;font-size:11px;font-weight:800}.econ-legend{font-size:.75rem;line-height:1.35}.table-hint{color:#5d747b;margin:0 0 9px;font-size:.82rem}.econ-table-wrap{overscroll-behavior-inline:contain;scrollbar-color:#8abac4 #eef5f6;border:1px solid #d8e6e8;border-radius:10px;max-width:100%;overflow-x:auto;box-shadow:inset -14px 0 14px -16px #123746bf}.econ th,.econ td{padding:10px 11px}.econ th:first-child,.econ td:first-child{z-index:1;background:#f7fbfb;position:sticky;left:0;box-shadow:6px 0 9px -9px #123746}.econ thead th:first-child{z-index:2;background:#eaf4f5}.econ .best-row td:first-child{background:#e6f5ea}.econ .fail-row td:first-child{background:#fff8f7}.trust{gap:0;padding-top:20px;padding-bottom:20px}.trust>div{min-height:52px}.trust span{font-size:.76rem}.site-footer{padding-top:24px;padding-bottom:28px}@media (width<=900px){nav{scrollbar-width:none;display:flex;overflow-x:auto}nav::-webkit-scrollbar{display:none}nav button{flex:none;padding:0 16px}.work{grid-template-columns:1fr}.work aside{scrollbar-width:none;flex-wrap:nowrap;padding:2px 0 4px;display:flex;overflow-x:auto}.work aside::-webkit-scrollbar{display:none}.work aside small,.work aside h2{display:none}.work aside button{border:1px solid var(--line);border-left-width:1px;flex:none;width:auto;padding:10px 13px}.work aside .sel{border-color:var(--blue)!important}.grid{grid-template-columns:1fr}.grid form{border-right:0}.calculator-directory{grid-template-columns:1fr 1fr}}@media (width<=620px){header{background:#69d3ea;padding:0}.top{align-items:center;min-height:78px;display:flex}.brand{width:calc(100% - 78px);min-width:0;box-shadow:none;background:0 0;border-radius:0;padding:12px 14px 10px}.brand-name{letter-spacing:-.055em;font-size:clamp(1.72rem,8.4vw,2.15rem)}.brand-tagline{margin-top:4px;display:block}.brand-tagline i{display:none}.brand-tagline em{text-align:left;font-size:.72rem}.about-button{background:#fff;border-radius:9px;min-height:40px;margin-right:12px;padding:0 11px;position:static}nav{background:#f5fbfc;border-bottom:1px solid #cde4e8;padding:7px 12px}nav button{min-height:44px;font-size:.83rem}nav b{margin-right:6px}.home{padding:12px 12px 30px}.home-intro{border-radius:13px;padding:15px 16px}.home-intro small{font-size:.64rem}.home-intro h1{margin:3px 0 4px;font-size:1.72rem}.home-intro p{font-size:.9rem;line-height:1.35}.calculator-directory{grid-template-columns:1fr;gap:10px;margin-top:10px}.category-card{border-radius:13px;padding:13px 12px}.category-select{min-height:96px}.category-select>p{margin-top:7px;font-size:.82rem}.category-arrow{padding-left:10px;font-size:1.65rem}.category-heading{gap:9px}.category-heading i{width:34px;height:34px}.category-heading small{font-size:.62rem}.category-heading h2{font-size:1.03rem}.calculator-links{gap:7px;margin-top:10px}.calculator-links button{grid-template-columns:28px minmax(0,1fr) 16px;min-height:58px;padding:8px 10px}.calculator-links button>i{width:28px;height:28px}.calculator-links button strong{font-size:.88rem}.calculator-links button small{font-size:.72rem}.accuracy-note{gap:4px;padding:13px 14px}.work{background-size:22px 22px;padding:10px 10px 28px}.work aside{margin:0 -10px;padding:2px 10px 7px}.work aside button{min-height:42px;font-size:.8rem}article,.economic-work article{border-radius:14px;padding:16px 12px}.title{gap:0;margin-bottom:14px}.title h1{font-size:1.55rem;line-height:1.1}.title .calculator-description{margin-top:9px;padding:12px 13px}.title .calculator-description p{font-size:.86rem;line-height:1.48}.grid form{padding:14px 12px}.default-notice,.instruction,.econ-notice{font-size:.82rem}.fields{grid-template-columns:1fr;gap:14px}.fields label>span{font-size:.9rem}.fields label>span small{font-size:.73rem}.fields input{font-size:1rem}.actions,.three-actions,.econ-inputs .actions{grid-template-columns:1fr 1fr;gap:8px}.actions button{padding:0 10px;font-size:.88rem}.actions button:first-child{grid-column:1/-1;min-height:52px;font-size:.96rem}.results{padding-top:2px}.tiles{grid-template-columns:1fr 1fr}.tiles>div{padding:12px 11px}.tiles strong{font-size:1.18rem}.tiles i{font-size:.72rem}.empty{min-height:120px;padding:14px}.econ-layout{grid-template-columns:1fr}.econ-inputs,.econ-output>.results,.econ-table-card,.econ-formulas{padding:13px}.econ-field-pair{grid-template-columns:1fr}.mode-switch{grid-template-columns:1fr 1fr}.mode-switch button{min-height:44px;padding:8px 5px;font-size:.82rem}.condition-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr) 36px}.condition-row>button{height:48px}.econ-summary{grid-template-columns:1fr}.econ-summary>div{padding:12px}.econ-summary strong{font-size:1.3rem}.result-sentence{font-size:.86rem;line-height:1.5}.econ-chart{margin-top:16px}.econ-chart svg{aspect-ratio:460/320}.econ-legend{gap:8px 12px}.econ-table-card{margin-left:0;margin-right:0}.econ table{font-size:.82rem}.table-hint{display:block}.trust{grid-template-columns:1fr 1fr;gap:14px 8px;padding:18px 12px}.trust>div{gap:8px;padding:0 6px}.trust div>b{min-width:34px;height:34px}.trust span{font-size:.68rem}.trust strong{font-size:.73rem}.site-footer{padding:20px 14px 24px;font-size:.82rem}.about-page{padding:14px 12px 32px}.about-card{padding:22px 17px}.about-card h1{font-size:1.9rem}.about-card p{font-size:.96rem;line-height:1.62}}@media (prefers-reduced-motion:no-preference){.tiles,.econ-summary,.pipe-size-conclusion{animation:.2s ease-out results-in}@keyframes results-in{0%{opacity:.25;transform:translateY(5px)}to{opacity:1;transform:none}}}.top{gap:18px}.pipe-advanced .fields{padding:4px 0}@media (width<=620px){.top{grid-template-columns:minmax(0,1fr) auto;gap:8px;min-height:72px;display:grid}.brand{width:100%;padding:10px 0 9px 12px}.brand-name{white-space:nowrap;font-size:clamp(1.48rem,6.7vw,1.78rem)}.brand-tagline{grid-template-columns:32px minmax(0,1fr) 32px;align-items:center;gap:6px;max-width:100%;margin-top:3px;display:grid}.brand-tagline i{width:32px;height:32px;box-shadow:0 0 0 2px var(--teal);text-align:center;border-width:4px;place-items:center;font-size:.82rem;line-height:1;display:grid}.brand-tagline em{text-align:center;min-width:0;font-size:.6rem;line-height:1.15}.about-button{align-self:center;margin:0 10px 0 0;position:static}.advanced-options summary span{display:none}}:root{--ink:#173344;--navy:#173344;--slate:#425b69;--teal:#087e96;--blue:#087e96;--blue-strong:#086a80;--paper:#f4f7f9;--line:#d7e2e8;--shadow:0 3px 14px #17334406}body{background:var(--paper)}header{background:0 0;padding:20px 24px}.top{grid-template-columns:minmax(0,500px) auto;justify-content:space-between;align-items:start;gap:16px;display:grid}.brand{width:100%;min-width:0;box-shadow:none;background:0 0;border-radius:0;grid-template-columns:52px minmax(0,1fr);align-items:center;gap:12px;padding:0;display:grid}.brand-icon{object-fit:contain;width:52px;height:52px;display:block}.brand-copy{min-width:0;display:block}.brand-name{color:var(--ink);letter-spacing:-.045em;white-space:nowrap;font-size:clamp(1.7rem,3.4vw,2.35rem);font-weight:750;line-height:1.05;display:block}.brand-slogan{letter-spacing:0;color:var(--slate);margin-top:5px;font-size:.875rem;font-weight:500;line-height:1.35;display:block}.about-button{min-height:44px;box-shadow:none;background:#fff;align-self:start;margin:0;position:static}.home{padding-top:8px}.home-intro{box-shadow:none;background:0 0;border:0;border-radius:0;padding:8px 0 14px}.home-intro h1{letter-spacing:-.035em;font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.2}.home-intro p{color:var(--slate);font-size:1rem}.category-card{box-shadow:none;border-color:var(--line);border-radius:12px}.category-select{min-height:116px}.category-select>p{color:var(--slate);font-size:.9375rem}.category-heading h2{font-size:1.125rem}.category-heading i{border-radius:9px;flex-shrink:0}.accuracy-note{border:1px solid var(--line);background:#fff;border-left:3px solid #9baeb9;align-items:flex-start}.accuracy-note span{font-size:.875rem}.accuracy-note b{color:var(--ink)}.calculator-nav{background:0 0;border:0;flex-wrap:wrap;align-items:end;gap:12px;padding:0 24px 18px;display:flex;overflow:visible}.calculator-nav>button{background:#fff;min-height:48px;padding:0 16px}.calculator-nav label{flex:1;min-width:180px;max-width:400px;display:block}.calculator-nav label>span{margin-bottom:6px;font-size:.875rem;font-weight:650;display:block}.calculator-nav select{font:inherit;color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:9px;width:100%;min-height:48px;padding:8px 30px 8px 12px;font-size:1rem}select:focus-visible{outline-offset:2px;outline:3px solid #69d3d0}.work,.economic-work{background:0 0;max-width:1240px;padding:0 24px 32px;display:block}article,.economic-work article{border-color:var(--line);box-shadow:var(--shadow);border-radius:14px;padding:26px}.title>i{display:none}.title h1{line-height:1.2}.title small{font-size:.75rem}.title .calculator-description{color:var(--slate);background:0 0;border:0;margin-top:10px;padding:0}.title .calculator-description p{font-size:1rem;line-height:1.55}.grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}.grid form,.econ-inputs{box-shadow:none;background:0 0;border:0;border-radius:0;padding:0}.fields label>div,.econ-field-pair label>div,.condition-row label>div{background:#fff;border-color:#9fb5c0;transition:border-color .15s,box-shadow .15s,background-color .15s;box-shadow:inset 0 2px 4px #17334412,0 1px #fff}.fields label>div:focus-within,.econ-field-pair label>div:focus-within,.condition-row label>div:focus-within{border-color:var(--blue);background:#fff;box-shadow:inset 0 2px 4px #17334412,0 0 0 3px #087e9630}.fields input,.econ-field-pair input,.condition-row input{color:var(--ink);caret-color:var(--blue-strong)}.fields input:focus-visible,.econ-field-pair input:focus-visible,.condition-row input:focus-visible{outline:none}.fields label b,.econ-field-pair label b,.condition-row label b{border-color:var(--line);background:#f3f7f9;padding:0 9px;font-size:.875rem}.fields label>span small,.econ-field-pair label>span small{text-transform:none;letter-spacing:0;font-size:.8125rem}.default-notice,.instruction,.econ-notice{background:#f0f7fa;border:0;border-radius:8px;font-size:.875rem}.actions button:first-child{background:var(--blue-strong);border:1px solid #054f61;transform:translateY(0);box-shadow:0 3px #054f61,0 7px 13px #17334420}.actions button:first-child:hover{filter:brightness(1.035)}.actions button:first-child:focus-visible{outline-offset:3px;outline:3px solid #69d3d0}.actions button:first-child:active{transform:translateY(3px);box-shadow:0 0 #054f61,0 2px 6px #17334420}.three-actions button:nth-child(2),.three-actions button:nth-child(3),.econ-inputs .actions button:nth-child(2),.econ-inputs .actions button:nth-child(3),.actions button:last-child,.flow-reset{border-color:var(--line);color:var(--slate);box-shadow:none;background:#fff}.tiles>div{background:#f1f5f7;border:1px solid #d2dfe5;border-radius:10px;padding:16px;box-shadow:inset 0 1px #fff}.tiles span{color:var(--slate);font-size:.875rem;line-height:1.4}.tiles strong{color:var(--ink);letter-spacing:-.02em;font-size:1.5rem}.tiles i{font-size:.875rem}.tiles>.primary-metric{background:#edf7fa;border-color:#a5d2dd;grid-column:1/-1;padding:20px}.tiles>.primary-metric strong{color:var(--blue-strong);font-size:2rem}.pipe-size-conclusion{background:#edf7f0;margin:0 0 18px}.pipe-size-conclusion h3{font-size:1.65rem}.pipe-size-conclusion dt,.pipe-size-conclusion p{font-size:.875rem}.description-note{color:var(--slate);font-size:.9375rem;line-height:1.6}.rh small{display:none}.rh h2{font-size:1.2rem}details{font-size:.9375rem}details summary{justify-content:space-between;gap:12px;list-style:none}summary::-webkit-details-marker{display:none}details summary:after{content:"⌄";flex-shrink:0;font-size:1.2rem;transition:transform .15s}details[open]>summary:after{transform:rotate(180deg)}.formula{overflow-wrap:anywhere;background:#f6f8fa;border:0;padding:12px 0}.advanced-options{border-color:var(--line)}.advanced-options summary{font-size:.9375rem;line-height:1.4}.econ-layout{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:32px}.econ-output>.results,.econ-table-card,.econ-formulas{box-shadow:none;background:0 0;border:0;padding:0}.econ-summary{grid-template-columns:1fr 1fr}.econ-summary>div{background:#f1f5f7;border-color:#d2dfe5;box-shadow:inset 0 1px #fff}.econ-summary>.best{background:#edf7f0;grid-column:1/-1}.econ-summary>.best strong{font-size:2rem}.econ-summary>.annual-cost{background:#edf7fa;grid-column:1/-1}.econ-summary>.annual-cost strong{color:var(--blue-strong);font-size:1.7rem}.econ-summary span,.econ-summary small{font-size:.875rem;line-height:1.4}.econ-table-card,.econ-formulas{border-top:1px solid var(--line);margin-top:26px;padding-top:20px}.econ table,.econ-legend{font-size:.875rem}.econ-chart svg{aspect-ratio:360/280}.econ-chart svg text,.econ-chart svg .best-label{font-size:14px}.chart-caption{margin:8px 0;font-size:.9375rem}.chart-axis{color:var(--slate);margin:0 0 12px;font-size:.875rem}.actions button:first-child:active,.calculate-feedback{color:#fff!important;background:#2d8a57!important;border-color:#216b43!important}.calculate-feedback{animation:.62s cubic-bezier(.2,.75,.2,1) calculate-confirm}.result-panel-updated{animation:.56s cubic-bezier(.16,.8,.2,1) both result-arrive}.results{scroll-margin-top:12px}.engineering-motion{border:1px solid var(--line);color:var(--slate);background:#f7fafb;border-radius:10px;margin:10px 0 14px;padding:7px 12px 6px;animation:.75s ease-out both motion-panel-confirm}.engineering-motion svg{width:100%;height:72px;display:block}.engineering-motion figcaption{color:var(--slate);margin-top:2px;font-size:.875rem;line-height:1.3}.pipe-wall{fill:#d8e2e7;stroke:#8298a4;stroke-width:2px}.pipe-water{fill:#d9f2f6;stroke:#64b7c7;stroke-width:1px}.flow-streak{fill:none;stroke:#087e96;stroke-width:3px;stroke-linecap:round;stroke-dasharray:12 12;animation:water-pass var(--flow-duration,.72s) ease-out 1 both}.flow-streak-two{animation-delay:40ms}.flow-streak-three{animation-delay:80ms}.flow-arrow{fill:none;stroke:#087e96;stroke-width:3px;stroke-linecap:round;stroke-linejoin:round;animation:.35s ease-out .3s both diagram-resolve}.diameter-axis{stroke:#b8cbd4;stroke-width:2px}.diameter-result circle{fill:#edf4f6;stroke:#89a8b5;stroke-width:2px;transform-box:fill-box;transform-origin:50%;animation:.62s cubic-bezier(.2,.75,.25,1) both diameter-resolve}.diameter-result text{fill:#5c737e;letter-spacing:.06em;font-size:10px;font-weight:700}.governing-diameter circle{fill:#dff2f5;stroke:#087e96;stroke-width:3px}.diameter-mark{stroke:#087e96;stroke-width:2px;stroke-dasharray:4 4;animation:.3s ease-out .45s both diagram-resolve}.tank-shell{fill:none;stroke:#6e8794;stroke-width:4px}.tank-component{transform-box:fill-box;transform-origin:bottom;animation:.72s cubic-bezier(.25,.7,.25,1) both tank-fill}.tank-equalization{fill:#69c5d5}.tank-fire{fill:#287a55}.tank-emergency{fill:#7f9daa}.tank-design-line{stroke:#087e96;stroke-width:2px;stroke-dasharray:5 4;animation:.28s ease-out .46s both diagram-resolve}.tank-leg{fill:none;stroke:#6e8794;stroke-width:4px;stroke-linecap:round}.tank-legend text{fill:#506a76;font-size:10px}.pump-case{fill:#eef5f7;stroke:#6e8794;stroke-width:3px}.pump-impeller{fill:none;stroke:#087e96;stroke-width:3px;stroke-linecap:round;stroke-linejoin:round;transform-origin:73px 52px;animation:.62s ease-out both pump-start}.power-track{stroke:#c9d7dd;stroke-width:10px;stroke-linecap:round}.power-level{stroke:#158a8a;stroke-width:10px;stroke-linecap:round;animation:.72s ease-out forwards power-ramp}.power-endpoint{fill:#158a8a;animation:.25s ease-out .48s both diagram-resolve}.power-scale-label{fill:#5c737e;font-size:10px}.power-bolt{fill:#158a8a;animation:.28s ease-out .46s both diagram-resolve}.conversion-node{fill:#f0f6f8;stroke:#8eabb7;stroke-width:2px}.conversion-target{fill:#e0f3f6;stroke:#087e96}.conversion-path{fill:none;stroke:#087e96;stroke-width:2.5px;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:160;stroke-dashoffset:160px;animation:.8s ease-out forwards conversion-resolve}.conversion-motion text{fill:#425b69;letter-spacing:.08em;font-size:12px;font-weight:700}.economic-axis{stroke:#b8cbd4;stroke-width:2px}.economic-point{fill:#edf4f6;stroke:#8eabb7;stroke-width:2px;transform-box:fill-box;transform-origin:50%;animation:.48s ease-out both candidate-settle}.feasible-point{fill:#dff2f5;stroke:#087e96}.economic-best-point{fill:#e5f3e9;stroke:#29835a;stroke-width:3px;animation:.68s cubic-bezier(.2,.75,.25,1) both diameter-resolve}.economic-check{fill:none;stroke:#29835a;stroke-width:2.5px;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:24;stroke-dashoffset:24px;animation:.3s ease-out .42s forwards power-ramp}.economic-scale-label{fill:#5c737e;font-size:10px;font-weight:600}.econ-chart .capital-line,.econ-chart .energy-line,.econ-chart .total-line{stroke-dasharray:1000;stroke-dashoffset:1000px;animation:.85s ease-out forwards chart-draw}.econ-chart .energy-line{animation-delay:80ms}.econ-chart .total-line{animation-delay:.16s}.econ-chart .best-line,.econ-chart .best-point,.econ-chart .best-label{animation:.35s ease-out .7s both diagram-resolve}@keyframes calculate-confirm{0%{transform:translateY(0)scale(1);box-shadow:0 3px #216b43,0 7px 13px #17334420}30%{transform:translateY(3px)scale(.98);box-shadow:0 0 #216b43,0 2px 6px #17334420}70%{transform:translateY(0)scale(1.01);box-shadow:0 3px #216b43,0 7px 13px #17334420}to{transform:translateY(0)scale(1);box-shadow:0 3px #216b43,0 7px 13px #17334420}}@keyframes result-arrive{0%{opacity:.05;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes motion-panel-confirm{0%{background:#e7f7fa;border-color:#69c5d5;transform:scale(.985)}55%{background:#eff9fb;border-color:#8fcbd6;transform:scale(1.006)}to{border-color:var(--line);background:#f7fafb;transform:scale(1)}}@keyframes diagram-resolve{0%{opacity:0}to{opacity:1}}@keyframes water-pass{0%{stroke-dashoffset:48px;opacity:.25}to{stroke-dashoffset:0;opacity:1}}@keyframes candidate-settle{0%{opacity:.15;transform:translate(-8px)}to{opacity:1;transform:translate(0)}}@keyframes diameter-resolve{0%{opacity:.25;transform:scale(.55)}to{opacity:1;transform:scale(1)}}@keyframes tank-fill{0%{transform:scaleY(0)}to{transform:scaleY(1)}}@keyframes pump-start{0%{opacity:.3;transform:rotate(-35deg)}to{opacity:1;transform:rotate(0)}}@keyframes power-ramp{to{stroke-dashoffset:0}}@keyframes conversion-resolve{to{stroke-dashoffset:0}}@keyframes chart-draw{to{stroke-dashoffset:0}}.hours-guidance,.econ-foot,.hours-total,.planning-result-notice{font-size:.875rem}.well-hours-guidance{white-space:nowrap;font-size:.8125rem}.planning-result-notice{background:#faf8f2;border-color:#ddd6c5 #ddd6c5 #ddd6c5 #b7a67e}.site-footer{max-width:1192px;color:var(--slate);gap:12px;padding:22px 24px}.about-card{border-color:var(--line);box-shadow:none}.about-card .about-credentials{border:0;border-left:3px solid var(--blue);background:#f2f7fa}.about-card h1{font-size:clamp(1.8rem,4vw,2.6rem)}@media (width<=900px){.grid,.econ-layout{grid-template-columns:1fr}.grid form{border-bottom:1px solid var(--line);padding-bottom:24px}}@media (width<=620px){header{background:0 0;padding:14px 14px 16px}.top{grid-template-columns:minmax(0,1fr) auto;gap:10px;min-height:0}.brand{grid-template-columns:42px minmax(0,1fr);gap:8px;padding:0}.brand-icon{width:42px;height:42px}.brand-name{font-size:clamp(1.22rem,5.8vw,1.55rem)}.brand-slogan{font-size:.78rem;line-height:1.3}.about-button{margin:0;padding:0 12px}.home{padding:4px 14px 28px}.home-intro{padding:4px 0 12px}.home-intro h1{font-size:1.75rem}.home-intro p{font-size:.9375rem}.category-card{padding:16px}.category-select{min-height:110px}.category-heading h2{font-size:1.125rem}.category-select>p{font-size:.9375rem}.calculator-nav{gap:10px;padding:0 14px 16px}.calculator-nav label{min-width:0;max-width:none}.calculator-nav .calculator-picker{flex:1 0 100%}.work,.economic-work{padding:0 10px 24px}article,.economic-work article{padding:20px 14px}.title h1{font-size:1.6rem}.title .calculator-description{padding:0}.title .calculator-description p{font-size:1rem}.grid form,.econ-inputs{padding:0 0 22px}.fields{gap:16px}.tiles{grid-template-columns:1fr 1fr}.tiles>div{padding:13px}.tiles span{font-size:.875rem}.tiles strong{font-size:1.4rem}.tiles i{font-size:.875rem}.engineering-motion{margin:8px 0 12px;padding:5px 10px}.engineering-motion svg{height:56px}.engineering-motion figcaption{font-size:.8125rem}.econ-output>.results,.econ-table-card,.econ-formulas{padding-left:0;padding-right:0}.econ-summary{grid-template-columns:1fr}.econ-chart svg{aspect-ratio:360/280}.econ-legend{gap:8px 14px}.condition-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr) 44px}.condition-row input{padding:10px 6px}.condition-row label b{padding:0 4px;font-size:.75rem}.about-page{padding:0 10px 24px}.about-card{padding:22px 16px}.about-card .about-credentials{padding:12px}}@media (width<=360px){.tiles{grid-template-columns:1fr}.brand-slogan{font-size:.8125rem}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}.power-level,.conversion-path,.economic-check,.econ-chart .capital-line,.econ-chart .energy-line,.econ-chart .total-line{stroke-dashoffset:0!important}.tank-component,.diameter-result circle,.economic-point{transform:none!important}.flow-arrow,.diameter-mark,.tank-design-line,.power-endpoint,.power-bolt,.econ-chart .best-line,.econ-chart .best-point,.econ-chart .best-label{opacity:1!important}}