:root{
 --primary:#176ff2;--primary-dark:#0f56c7;--navy:#0b254f;--text:#142541;--muted:#64758d;
 --line:#d9e4f2;--green:#168944;--green-bg:#eaf8ef;--cyan:#10a9c8;
 --amber:#b96c00;--amber-bg:#fff4dc;--red:#cf373b;--red-bg:#ffeded;
 --purple:#7b55d9;--shadow:0 18px 45px rgba(18,57,105,.10)
}*{box-sizing:border-box}button, input, select{font:inherit}button{cursor:pointer}a{color:inherit}.skip-link{position:fixed;left:16px;top:-80px;z-index:9999;padding:11px 16px;border-radius:10px;background:#fff;color:#0b55c5;box-shadow:0 8px 22px #0003;font-weight:800}.skip-link:focus{top:14px}.noscript{padding:12px 5vw;background:#fff3cd;color:#664d03;text-align:center}.header-actions{display:flex;align-items:center;gap:12px}.section-title{display:flex;gap:14px;align-items:flex-start;margin-bottom:22px}.section-icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#e9f3ff;color:var(--primary);font-weight:900;font-size:21px;flex:0 0 auto}.section-title h2{margin:1px 0 4px;font-size:26px}.section-title p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}.mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px}.mode-tab{border:1px solid #cbd9eb;background:#fff;color:#46607f;border-radius:12px;padding:12px;font-weight:800}.mode-tab.active{background:#eaf3ff;border-color:#7fb0ee;color:#135ecb}.preset-row{display:grid;grid-template-columns:170px 1fr;gap:15px;align-items:center;padding:15px 16px;background:#f5f9ff;border:1px solid #dce9f8;border-radius:14px;margin-bottom:18px}.preset-row label{font-weight:800}.preset-row select{border:1px solid #c8d8eb;border-radius:10px;padding:11px;background:#fff}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}.field.full{grid-column:1/-1}.field label{display:block;margin-bottom:7px;font-size:14px;font-weight:760}.subheading{grid-column:1/-1;margin:5px 0 -2px;padding:11px 13px;border-radius:11px;background:#eef5ff;color:#195bb3;font-size:14px;font-weight:850}.input-wrap{display:grid;grid-template-columns:minmax(0,1fr) 80px;align-items:center;border:1px solid #cbd9eb;border-radius:12px;overflow:hidden;background:#fff}.input-wrap.no-unit{grid-template-columns:1fr}.input-wrap input, .input-wrap select{width:100%;min-width:0;border:0;outline:0;padding:13px 14px;background:#fff;color:var(--text);font-weight:700}.input-wrap span{height:100%;display:flex;align-items:center;justify-content:center;background:#f6f9fd;color:#5f718b;border-left:1px solid #d7e2f0;font-size:13px;font-weight:700}.input-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px #176ff21a}.optional-card{grid-column:1/-1;padding:15px;border:1px dashed #b9cce4;border-radius:14px;background:#fbfdff}.optional-card>p{margin:0 0 13px;color:var(--muted);font-size:13px;line-height:1.6}.optional-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.input-actions{display:grid;grid-template-columns:1.25fr .9fr;gap:14px;padding-top:22px;margin-top:22px;border-top:1px solid var(--line)}.input-actions button{min-height:54px;border-radius:13px;font-size:16px;font-weight:850}.primary-action{border:0;background:var(--primary);color:#fff}.primary-action:hover{background:var(--primary-dark)}.secondary-action{border:1px solid #cbd9eb;background:#fff;color:#344862}.validation{margin:11px 0 0;min-height:20px;color:var(--red);font-size:14px}.summary-card{min-height:164px;padding:27px 30px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:20px;border:1px solid #bad7ff;background:linear-gradient(135deg,#edf6ff,#fbfdff)}.summary-card p{margin:0 0 7px;font-weight:850}.summary-card strong{font-size:clamp(50px,6vw,78px);line-height:1;color:var(--primary);letter-spacing:-.05em}.summary-card strong small{font-size:24px;margin-left:7px;letter-spacing:0}.health-badge{min-width:165px;text-align:center;border-radius:999px;padding:14px 20px;font-weight:900}.summary-card.healthy .health-badge{color:var(--green);background:var(--green-bg);border:1px solid #86d6a1}.summary-card.warning{background:linear-gradient(135deg,#fff8e9,#fffdf8);border-color:#edc273}.summary-card.warning .health-badge{color:var(--amber);background:var(--amber-bg);border:1px solid #ecc16f}.summary-card.failed{background:linear-gradient(135deg,#fff0f0,#fffafa);border-color:#efa4a7}.summary-card.failed .health-badge{color:var(--red);background:var(--red-bg);border:1px solid #efa9aa}.summary-card.overload{background:linear-gradient(135deg,#f6f0ff,#fffaff);border-color:#c6b0ee}.summary-card.overload .health-badge{color:#6d42c1;background:#f1eaff;border:1px solid #cbb9ee}.summary-card.nosignal{background:linear-gradient(135deg,#f1f4f8,#fafbfc);border-color:#bac4d1}.summary-card.nosignal .health-badge{color:#526174;background:#e9edf2;border:1px solid #bcc6d2}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:15px 0}.metric-card{border:1px solid var(--line);border-radius:15px;padding:16px;display:flex;align-items:center;gap:12px;min-width:0}.metric-icon{width:47px;height:47px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;background:#eef5ff;color:#176ff2;border:1px solid #a9c9f3;font-weight:900}.metric-card small{display:block;color:var(--muted);margin-bottom:5px}.metric-card strong{font-size:20px;white-space:nowrap}.gauge{padding:18px;border:1px solid var(--line);border-radius:15px;background:#fbfdff}.gauge-head{display:flex;justify-content:space-between;gap:20px;margin-bottom:12px}.gauge-head span{color:var(--muted)}.gauge-head strong{color:#0b4f9c}.gauge-track{height:20px;border-radius:999px;background:linear-gradient(90deg,#6f4fd4 0 16%,#176ff2 16% 30%,#19b574 30% 75%,#e8a537 75% 89%,#d34346 89% 100%);position:relative}.gauge-marker{position:absolute;top:-7px;left:50%;width:4px;height:34px;border-radius:4px;background:#0b254f;box-shadow:0 0 0 3px #fff,0 3px 10px #0005;transition:left .3s}.gauge-labels{display:flex;justify-content:space-between;margin-top:8px;color:#6c7e96;font-size:11px}.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:14px 0}.result-box{border:1px solid var(--line);border-radius:14px;padding:17px 19px;background:#fff}.result-box span{display:block;color:var(--muted);margin-bottom:6px}.result-box strong{font-size:24px;color:#0b4f9c}.comparison{border:1px solid var(--line);border-radius:15px;overflow:hidden;margin-top:14px}.comparison h3{margin:0;padding:15px 18px;background:#f5f9fe;font-size:16px}.comparison-row{display:grid;grid-template-columns:1fr 130px;border-top:1px solid var(--line);padding:11px 18px}.comparison-row span:last-child{text-align:right;font-weight:800}.diagnosis{padding:16px 18px;border-radius:13px;margin-top:14px;border:1px solid transparent}.diagnosis strong{display:block;margin-bottom:7px}.diagnosis p{margin:0;line-height:1.68}.diagnosis.healthy{background:var(--green-bg);border-color:#bde6ca;color:#126f36}.diagnosis.warning{background:var(--amber-bg);border-color:#efd593;color:#865300}.diagnosis.failed{background:var(--red-bg);border-color:#efb5b7;color:#a6292c}.diagnosis.overload{background:#f3edff;border-color:#cfbff0;color:#673dac}.diagnosis.nosignal{background:#eef1f5;border-color:#c7d0da;color:#445264}.cause-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:9px}.cause-list li{padding:11px 13px;border-radius:11px;background:#fff;border:1px solid #e0e8f2;color:#3f526b;line-height:1.55}.cause-list b{color:#163f79}.result-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin-top:14px}.result-actions button{min-height:48px;border-radius:11px;border:1px solid #c9daee;background:#fff;color:#1760cc;font-weight:800}.result-actions button:hover{background:#f2f7ff}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-heading h2{margin:0;font-size:30px}.section-heading .eyebrow{color:#2d79d9}.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.method-grid article, .related-card{padding:20px;border-radius:15px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px #234c7f0d}.method-grid h3{margin:0 0 9px;font-size:17px}.method-grid p{margin:0;color:var(--muted);line-height:1.65}.note{margin-top:18px;padding:20px;border-radius:15px;background:#eaf4ff;border:1px solid #b8d5f7;color:#345578;line-height:1.7}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.faq-grid details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 19px}.faq-grid summary{cursor:pointer;font-weight:800;line-height:1.5}.faq-grid p{color:var(--muted);line-height:1.7}.history-list{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.history-empty{grid-column:1/-1;padding:25px;border:1px dashed #b8cae1;border-radius:14px;text-align:center;color:var(--muted)}.history-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px}.history-item h3{margin:0 0 7px}.history-item p{margin:4px 0;color:var(--muted);font-size:14px}.text-button{border:0;background:transparent;color:var(--primary);font-weight:800}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.related-card{text-decoration:none}.related-card:hover{transform:translateY(-2px);border-color:#9fc3ef}.related-card strong{display:block;margin-bottom:7px;color:#124f9e}.related-card p{margin:0;color:var(--muted);line-height:1.6}.ad-slot{max-width: var(--nel-ad-max, 1200px);min-height:120px;margin:10px auto 34px;padding:10px 14px;border:1px solid #e0e8f2;border-radius:13px;background:#fff}.ad-slot[hidden]{display:none!important}.ad-label{text-align:center;color:#7b8798;font-size:11px;letter-spacing:.08em;margin-bottom:7px}.ad-body{min-height:90px;display:grid;place-items:center}a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible{outline:3px solid #ffbf47;outline-offset:3px}
@media (max-width:1280px){.metric-grid{grid-template-columns:repeat(2,1fr)}.method-grid{grid-template-columns:1fr 1fr}.history-list, .related-grid{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.form-grid, .optional-grid{grid-template-columns:1fr}.field.full, .subheading, .optional-card{grid-column:auto}.preset-row{grid-template-columns:1fr}.input-actions{grid-template-columns:1fr}.summary-card{display:block;padding:22px}.summary-card strong{font-size:54px}.health-badge{display:inline-block;margin-top:18px}.metric-grid, .result-grid, .result-actions, .method-grid, .faq-grid, .history-list, .related-grid{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*, *::before, *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{}.action-icon{display:inline-block;width:18px;height:18px;flex:0 0 18px;vertical-align:-4px;margin-right:6px;overflow:visible}

/* V1.9.5-05: unified vertical calculator layout */

/* V1.9.9-01: keep the full site navigation visible on desktop. */
@media (min-width: 1101px){}