/* Steel Impex India - Metal Toolkit */
.tk-hero{background:radial-gradient(1200px 400px at 85% -10%,rgba(210,122,67,.22),transparent 60%),linear-gradient(160deg,#0c2033 0%,#10283f 55%,#143552 100%);color:#fff;padding:72px 0 120px}
.tk-hero h1{color:#fff;font-size:clamp(2.4rem,5vw,4rem);margin:14px 0 14px;letter-spacing:-.03em}
.tk-hero h1 em{color:var(--copper);font-style:normal}
.tk-hero p{color:#c7d4de;max-width:640px;font-size:16px;line-height:1.75}
.tk-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tk-stats span{border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);border-radius:999px;padding:8px 14px;font-size:12px;color:#d9e3ea}
.tk-stats b{color:#fff;font-size:14px;margin-right:2px}

.tk-shell-wrap{background:var(--paper,#f5f7f9);padding:0 0 70px}
.tk-shell{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 30px 80px rgba(16,40,63,.14);margin-top:-80px;position:relative;overflow:hidden}
.tk-tabs{display:flex;gap:4px;padding:10px;background:#f2f5f7;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}
.tk-tabs::-webkit-scrollbar{display:none}
.tk-tabs button{flex:0 0 auto;border:0;background:transparent;padding:10px 13px;border-radius:10px;font:inherit;font-size:12.5px;font-weight:700;color:#536775;cursor:pointer;letter-spacing:.01em;display:flex;align-items:center;gap:8px}
.tk-tabs button:hover{color:var(--ink);background:#e7edf1}
.tk-tabs button[aria-selected="true"]{background:#fff;color:var(--ink);box-shadow:0 2px 10px rgba(16,40,63,.10)}
.tk-badge{background:var(--copper);color:#fff;border-radius:999px;font-size:11px;min-width:20px;padding:2px 6px;text-align:center}
.tk-panel{padding:30px}

/* search */
.tk-search{position:relative;max-width:820px}
.tk-search label{display:block;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--copper);margin-bottom:10px}
.tk-panel .tk-search input{width:100%;font:inherit;font-size:18px;padding:18px 20px 18px 54px;border:2px solid var(--ink);border-radius:12px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%2310283f' stroke-width='2.2'%3E%3Ccircle cx='10.5' cy='10.5' r='6.5'/%3E%3Cpath d='M15.5 15.5 21 21'/%3E%3C/svg%3E") no-repeat 18px 50%;color:var(--ink)}
.tk-panel .tk-search input:focus{outline:none;box-shadow:0 0 0 4px rgba(210,122,67,.25);border-color:var(--copper)}
.tk-suggest{position:absolute;left:0;right:0;top:calc(100% - 46px);z-index:20;list-style:none;margin:0;padding:6px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 20px 40px rgba(16,40,63,.18)}
.tk-suggest li{padding:10px 12px;border-radius:8px;cursor:pointer;display:flex;justify-content:space-between;gap:12px;align-items:baseline}
.tk-suggest li b{color:var(--ink);font-size:15px}
.tk-suggest li span{color:#6c7f8c;font-size:12px;text-align:right}
.tk-suggest li.on,.tk-suggest li:hover{background:#f2f5f7}
.tk-suggest .tk-noresult{display:block;color:#6c7f8c;cursor:default}
.tk-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tk-chips button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 13px;font:inherit;font-size:12px;font-weight:700;color:#3d5262;cursor:pointer}
.tk-chips button:hover{border-color:var(--copper);color:var(--copper)}

/* grade card */
.tk-card{margin-top:26px;border:1px solid var(--line);border-radius:14px;padding:26px;background:#fff;min-height:160px}
.tk-empty{display:flex;align-items:center;background:linear-gradient(135deg,#f7f9fa,#eef3f6)}
.tk-empty-inner h3{margin:0 0 8px;font-size:20px}
.tk-empty-inner p{margin:0;max-width:620px;color:#5d707c;line-height:1.7}
.tk-loading{display:grid;place-items:center}
.tk-spinner{width:34px;height:34px;border-radius:50%;border:3px solid #dfe6ea;border-top-color:var(--copper);animation:tkspin .8s linear infinite}
@keyframes tkspin{to{transform:rotate(360deg)}}
.tk-card-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;flex-wrap:wrap;padding-bottom:18px;border-bottom:1px solid var(--line)}
.tk-card-head h2{margin:6px 0 0;font-size:clamp(1.7rem,3vw,2.4rem);letter-spacing:-.02em}
.tk-fam{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--copper)}
.tk-head-actions{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.tk-link-btn{border:0;background:none;color:var(--ink);font:inherit;font-size:13px;font-weight:700;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:4px 0}
.tk-link-btn:hover{color:var(--copper)}
.tk-xnote{margin:14px 0 0;background:#fff6ef;border-left:3px solid var(--copper);padding:10px 14px;font-size:13px;color:#6b4a33;border-radius:0 8px 8px 0}
.tk-h{font-size:12px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:#536775;margin:24px 0 12px}
.tk-eqs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.tk-eq{display:grid;grid-template-columns:150px 1fr;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fbfcfd}
.tk-eq-na{opacity:.55}
.tk-eq-sys{display:flex;gap:10px;align-items:center;font-size:13px;font-weight:700;color:var(--ink)}
.tk-eq-sys small{display:block;font-size:10.5px;font-weight:600;color:#56656f}
.tk-flag{flex:0 0 auto;width:38px;height:28px;border-radius:6px;background:var(--ink);color:#fff;font-size:11px;font-weight:800;display:grid;place-items:center;letter-spacing:.04em}
.tk-eq-val{font-size:14px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;gap:8px;align-items:center;word-break:break-word}
.tk-eq-val em{font-weight:500;color:#8a99a3;font-size:13px}
.tk-copy{flex:0 0 auto;border:1px solid var(--line);background:#fff;border-radius:6px;font:inherit;font-size:11px;font-weight:700;color:#536775;padding:4px 8px;cursor:pointer}
.tk-copy:hover{border-color:var(--copper);color:var(--copper)}
.tk-two{display:grid;grid-template-columns:1.2fr 1fr;gap:28px}
.tk-chem{display:flex;flex-wrap:wrap;gap:8px}
.tk-el{display:inline-flex;gap:8px;align-items:baseline;border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fff;font-size:13px;color:#3d5262;font-variant-numeric:tabular-nums}
.tk-el b{color:var(--ink);font-size:14px}
.tk-mech{margin:0;color:#3d5262;line-height:1.7;font-size:14px}
.tk-den{margin:14px 0 0;font-size:13px;color:#6c7f8c}
.tk-src{margin:22px 0 0;padding-top:14px;border-top:1px dashed var(--line);font-size:11.5px;color:#56656f;line-height:1.6}
.tk-error{color:#a3311f;margin:0}

/* weight */
.tk-shapes{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.tk-shapes button{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 6px 10px;font:inherit;font-size:12px;font-weight:700;color:#3d5262;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:6px}
.tk-shapes svg{width:38px;height:38px;fill:none;stroke:currentColor;stroke-width:2}
.tk-shapes button:hover{border-color:var(--copper)}
.tk-shapes button[aria-checked="true"]{border-color:var(--ink);background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(16,40,63,.2)}
.tk-calc{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;margin-top:22px;align-items:start}
.tk-form{display:grid;gap:16px}
.tk-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.tk-row-top{margin-bottom:18px}
.tk-panel label{display:grid;gap:6px;font-size:12px;font-weight:700;color:#536775}
.tk-panel input,.tk-panel select{font:inherit;font-size:15px;font-weight:600;color:var(--ink);padding:11px 12px;border:1.5px solid #c9d3d9;border-radius:9px;background:#fff;width:100%;min-width:0}
.tk-panel input:focus,.tk-panel select:focus{outline:none;border-color:var(--copper);box-shadow:0 0 0 3px rgba(210,122,67,.2)}

.tk-unit{display:inline-flex;border:1.5px solid #c9d3d9;border-radius:9px;overflow:hidden;width:max-content}
.tk-unit button{border:0;background:#fff;padding:8px 18px;font:inherit;font-size:13px;font-weight:700;color:#536775;cursor:pointer}
.tk-unit button[aria-pressed="true"]{background:var(--ink);color:#fff}
.tk-result{background:linear-gradient(160deg,#10283f,#173a59);border-radius:14px;padding:24px;color:#c7d4de;position:sticky;top:110px}
.tk-res-main{display:flex;flex-direction:column;gap:4px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.14)}
.tk-res-main span{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#e3a27a}
.tk-res-main strong{font-size:clamp(2rem,4vw,2.8rem);color:#fff;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.tk-res-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:18px 0}
.tk-res-grid span{display:block;font-size:11px;color:#9fb3c2}
.tk-res-grid b{font-size:16px;color:#fff;font-variant-numeric:tabular-nums}
.tk-note{font-size:12px;color:#56656f;line-height:1.6;margin:12px 0 0}
.tk-result .tk-note{color:#9fb3c2;margin:0 0 16px}
.tk-note.tk-err{color:#f2a391}

/* pipe */
.tk-pipe-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.tk-pc{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff}
.tk-pc-na{background:#f7f9fa;color:#8a99a3;font-size:13px}
.tk-sch{display:inline-block;background:var(--ink);color:#fff;font-size:12px;font-weight:800;border-radius:6px;padding:4px 10px;margin-bottom:12px}
.tk-pc dl{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;margin:0 0 10px;font-size:13px}
.tk-pc dt{color:#6c7f8c}
.tk-pc dd{margin:0;text-align:right;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.tk-full{margin-top:20px}
.tk-full summary{cursor:pointer;font-weight:700;color:var(--ink);font-size:14px;padding:8px 0}
.tk-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin-top:10px}
.tk-table{border-collapse:collapse;width:100%;font-size:12.5px;font-variant-numeric:tabular-nums}
.tk-table th,.tk-table td{padding:8px 10px;border-bottom:1px solid #e8edf0;text-align:right;white-space:nowrap}
.tk-table thead th{background:var(--ink);color:#fff;font-size:11px}
.tk-table tbody th{text-align:left}
.tk-table tbody tr:nth-child(even){background:#f6f9fa}

/* converters */
.tk-conv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.tk-conv{border:1px solid var(--line);border-radius:12px;padding:18px;display:grid;gap:10px;align-content:start}
.tk-conv h3{margin:0 0 4px;font-size:15px}
.tk-conv h3 small{font-weight:500;color:#56656f;font-size:12px}
.tk-gauge-out p{margin:4px 0;font-size:14px;color:var(--ink)}

/* rfq */
.tk-rfq-head h3{margin:0 0 6px}
.tk-rfq-head p{margin:0 0 18px;color:#5d707c}
.tk-rfq-list{display:grid;gap:8px}
.tk-rfq-item{display:grid;grid-template-columns:32px 1fr 36px;gap:8px;align-items:center}
.tk-rfq-n{width:28px;height:28px;border-radius:50%;background:var(--ink);color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center}
.tk-rfq-item button{border:1px solid var(--line);background:#fff;border-radius:8px;height:40px;font-size:18px;color:#8a99a3;cursor:pointer}
.tk-rfq-item button:hover{color:#a3311f;border-color:#a3311f}
.tk-empty-line{color:#56656f;margin:0;padding:18px;border:1px dashed var(--line);border-radius:10px}
.tk-rfq-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:18px}
.tk-dark-outline{color:var(--ink)!important;border-color:var(--ink)!important}
.tk-link{border:0;background:none;font:inherit;font-size:13px;color:#56656f;text-decoration:underline;cursor:pointer}
.tk-disabled{opacity:.45;pointer-events:none}

.tk-legal{font-size:11.5px;color:#56656f;line-height:1.7;margin:22px 4px 0;max-width:980px}
.tk-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:12px 18px;border-radius:10px;font-size:13px;font-weight:700;opacity:0;transition:.2s;z-index:100;pointer-events:none}
.tk-toast.on{opacity:1;transform:translate(-50%,0)}

@media(max-width:980px){.tk-shapes{grid-template-columns:repeat(4,1fr)}.tk-calc,.tk-two{grid-template-columns:1fr}.tk-result{position:static}.tk-pipe-cards{grid-template-columns:repeat(2,1fr)}.tk-conv-grid{grid-template-columns:1fr 1fr}.tk-eqs{grid-template-columns:1fr}}
@media(max-width:600px){.tk-hero{padding:48px 0 100px}.tk-panel{padding:18px}.tk-shapes{grid-template-columns:repeat(3,1fr)}.tk-pipe-cards,.tk-conv-grid{grid-template-columns:1fr}.tk-eq{grid-template-columns:1fr;gap:8px}.tk-head-actions{align-items:flex-start}.tk-card{padding:18px}.tk-search input{font-size:16px}}

.tk-seg{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}
.tk-seg button{border:1.5px solid #c9d3d9;background:#fff;border-radius:999px;padding:9px 16px;font:inherit;font-size:13px;font-weight:700;color:#536775;cursor:pointer}
.tk-seg button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.tk-table-size td,.tk-table-size th{text-align:center}
.tk-table-size tbody th{text-align:left}
.tk-table small{font-weight:500;opacity:.8}
.tk-conv-wide{grid-column:span 2}
.tk-temper{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:0;font-size:13px}
.tk-temper dt{font-weight:800;color:var(--ink);white-space:nowrap}
.tk-temper dd{margin:0;color:#3d5262}
.tk-pipe-cards{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
@media(max-width:980px){.tk-conv-wide{grid-column:auto}}

.tk-chem-full{gap:8px}
.tk-el-text{font-size:12.5px;color:#536775;background:#f7f9fa}
.tk-hsub{font-weight:500;text-transform:none;letter-spacing:0;color:#8a99a3;font-size:11.5px;margin-left:6px}

/* heat / MTC checker */
.tk-intro{margin:0 0 18px;color:#3d5262;max-width:820px;line-height:1.7}
.tk-heat{display:grid;grid-template-columns:1.6fr 1fr;gap:20px;align-items:start}
.tk-heat-in{display:grid;gap:12px}
.tk-heat-in > label small{display:block;font-weight:500;color:#56656f;margin-top:2px}
.tk-panel textarea{font:inherit;font-size:14px;font-family:ui-monospace,Menlo,Consolas,monospace;padding:12px;border:1.5px solid #c9d3d9;border-radius:9px;width:100%;resize:vertical;color:var(--ink)}
.tk-panel textarea:focus{outline:none;border-color:var(--copper);box-shadow:0 0 0 3px rgba(210,122,67,.2)}
.tk-panel input[type=range]{padding:0;border:0;box-shadow:none;accent-color:var(--copper)}
.tk-heat-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.tk-parsed{border:1px dashed var(--line);border-radius:10px;padding:12px;background:#fbfcfd}
.tk-ce{margin:10px 0 0;font-size:13px;color:#3d5262}
.tk-warn{margin:8px 0 0;font-size:13px;color:#8a4b14;background:#fff6ef;border-radius:6px;padding:8px 10px}
.tk-side-card{border:1px solid var(--line);border-radius:12px;padding:18px;display:grid;gap:10px;background:#fbfcfd}
.tk-side-card h3{margin:0;font-size:15px}
.tk-stock{display:grid;gap:6px}
.tk-stock-item{display:grid;grid-template-columns:1fr auto auto;gap:6px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff}
.tk-stock-item small{display:block;color:#56656f;font-size:11.5px}
.tk-stock-item button{border:1px solid var(--line);background:#fff;border-radius:6px;font:inherit;font-size:12px;font-weight:700;padding:5px 9px;cursor:pointer;color:#536775}
.tk-hres{margin-top:24px}
.tk-hsum{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:6px}
.tk-hsum small{flex-basis:100%;color:#56656f;font-size:12px}
.tk-st{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.03em;border-radius:999px;padding:4px 10px;white-space:nowrap}
.tk-st-ok{background:#e3f4ea;color:#1d6b3e}.tk-st-near{background:#fff1dc;color:#8a4b14}.tk-st-x{background:#eef2f5;color:#536775}.tk-st-bad{background:#fbe5e1;color:#a3311f}
.tk-hcard{border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:#fff}
.tk-hcard summary{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:12px 14px;cursor:pointer;list-style:none}
.tk-hcard summary::-webkit-details-marker{display:none}
.tk-hcard summary b{color:var(--ink);font-size:15px}
.tk-hcard summary small{flex-basis:100%;color:#56656f;font-size:12px;padding-left:2px}
.tk-hcard[open] summary{border-bottom:1px solid var(--line)}
.tk-hcard .tk-table{margin:10px 14px;width:calc(100% - 28px)}
.tk-hcard .tk-link-btn{margin:0 14px 12px}
.tk-hrows td,.tk-hrows th{text-align:left}
.tk-heat-cta{margin-top:16px}
.tk-spec{margin-top:24px;border:1px solid var(--line);border-radius:12px;padding:6px 16px}
.tk-spec-in{display:grid;gap:12px;padding:8px 0 14px}
.tk-spec-rows{display:grid;gap:8px}
.tk-spec-row{display:grid;grid-template-columns:100px 1fr 1fr 36px;gap:8px}
.tk-spec-row button{border:1px solid var(--line);background:#fff;border-radius:8px;font-size:18px;color:#8a99a3;cursor:pointer}
@media(max-width:980px){.tk-heat{grid-template-columns:1fr}}

.tk-gauge-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-bottom:6px}
.tk-gauge-hint{grid-column:1/-1;margin:0 0 4px}

/* certificate-style tables */
.tk-mtc th,.tk-mtc td{text-align:center;white-space:nowrap}
.tk-mtc tbody th{text-align:left}
.tk-mtc .tk-na{color:#a8b4bc}
.tk-mech-t td small{color:#56656f}
.tk-also{font-size:13px;color:#3d5262;margin:8px 0 0}
.tk-mech-in{border:1px solid var(--line);border-radius:10px;padding:10px 14px 14px;margin:0}
.tk-mech-in legend{font-size:12px;font-weight:700;color:#536775;padding:0 6px}
.tk-mech-in legend small{font-weight:500;color:#8a99a3}
.tk-hrows small{font-weight:500;color:#56656f;font-size:11px}

/* tab bar: smaller tabs + arrows when the bar overflows */
.tk-tabs-wrap{position:relative;background:#f2f5f7;border-bottom:1px solid var(--line)}
.tk-tabs-wrap .tk-tabs{border-bottom:0;scroll-behavior:smooth}
.tk-tabs-arrow{position:absolute;top:0;bottom:0;width:44px;border:0;z-index:3;font-size:26px;font-weight:700;line-height:1;color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:center}
.tk-tabs-left{left:0;background:linear-gradient(90deg,#f2f5f7 55%,rgba(242,245,247,0))}
.tk-tabs-right{right:0;background:linear-gradient(270deg,#f2f5f7 55%,rgba(242,245,247,0))}
.tk-tabs-arrow:hover{color:var(--copper)}
.tk-tabs-arrow[hidden]{display:none}

.tk-mtc tr.tk-typ th,.tk-mtc tr.tk-typ td{background:#fbf6f1;color:#6b4a2f;font-style:italic}
.tk-also small{color:#56656f}

/* ---- v9: weight mode switch, pressure ratings, hardness–tensile, requirement list ---- */
.tk-wmode{margin:0 0 16px}
.tk-press{border:1px solid var(--line);border-radius:12px;padding:14px 16px 4px;margin:4px 0 16px;background:#fbfcfd}
.tk-press h3{margin:0 0 10px;font-size:15px;color:var(--ink)}
.tk-press h3 small{font-weight:500;color:#56656f;font-size:12px;margin-left:6px}
.tk-press .tk-row{margin-bottom:10px}
.tk-press-dl{border-top:1px dashed var(--line);margin-top:8px;padding-top:8px}
.tk-press-dl dt{color:#8a4b14}
.tk-press-dl dd{font-weight:700}
.tk-hard-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.tk-rfq-item{grid-template-columns:32px 1fr 36px;row-gap:2px}
.tk-rfq-sub{grid-column:2 / 3;color:#56656f;font-size:12px;padding:0 2px 4px}
.tk-rfq-total{margin:10px 0 0;font-size:13px;color:#3d5262}
.tk-rfq-meta{margin:14px 0 4px}
.tk-rfq-meta label small{font-weight:500;color:#8a99a3}
#rfqPdf[disabled]{opacity:.6;cursor:wait}
@media(max-width:760px){.tk-hard-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* ---- v10: flanges & fittings ---- */
.tk-ff-unit{margin:0 0 14px}
.tk-ff-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:20px;align-items:start;margin-top:6px}
.tk-ff-fig{margin:0;border:1px solid var(--line);border-radius:12px;background:#fbfcfd;padding:10px}
.tk-ff-fig figcaption{font-size:11.5px;color:#56656f;text-align:center;margin-top:4px}
.tk-ff-svg{width:100%;height:auto;display:block}
.tk-ff-body{fill:#eef2f5;stroke:var(--ink);stroke-width:1.4}
.tk-ff-sec{fill:url(#ffh);stroke:var(--ink);stroke-width:1.4}
.tk-ff-hatch{stroke:#9fb0bc;stroke-width:1}
.tk-ff-hole{fill:#fff;stroke:var(--ink);stroke-width:1.1}
.tk-ff-boltcut{fill:#fff;stroke:#9fb0bc;stroke-width:.8;stroke-dasharray:3 2}
.tk-ff-thin{fill:none;stroke:#6b7f8c;stroke-width:1}
.tk-ff-cl{fill:none;stroke:#c77a4b;stroke-width:.9;stroke-dasharray:10 3 2 3}
.tk-ff-line{fill:none;stroke:var(--ink);stroke-width:1.6}
.tk-ff-fill{fill:#eef2f5}
.tk-ff-dim{stroke:#536775;stroke-width:.9;fill:none}
.tk-ff-arrow{fill:#536775}
.tk-ff-lbl{font:700 13px/1 var(--font-sans,system-ui,sans-serif);fill:#c77a4b}
.tk-ff-sm{font-size:11px}
.tk-ff-data{display:grid;gap:12px}
.tk-ff-dl{display:grid;grid-template-columns:auto 1fr;gap:7px 14px;margin:0;font-size:13.5px;border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:#fff}
.tk-ff-dl dt{color:#536775;font-weight:700}
.tk-ff-dl dd{margin:0;color:var(--ink);font-weight:600}
.tk-ff-dl small{font-weight:500;color:#56656f}
@media(max-width:860px){.tk-ff-grid{grid-template-columns:1fr}}

/* ---- v11: report an error ---- */
.tk-report{background:none;border:0;padding:0 2px;color:#a35f36;font:600 12.5px/1.4 inherit;cursor:pointer;text-decoration:underline;text-underline-offset:2px;min-height:24px}
.tk-report:hover,.tk-report:focus-visible{color:#7d4321}
.tk-h .tk-report{margin-left:10px;font-size:12px;vertical-align:middle}
.tk-dialog{max-width:520px;width:calc(100% - 32px);border:1px solid var(--line);border-radius:14px;padding:20px 22px;box-shadow:0 24px 60px rgba(16,40,63,.25);color:var(--ink)}
.tk-dialog::backdrop{background:rgba(16,40,63,.45)}
.tk-dialog h2{margin:0 0 6px;font-size:20px}
.tk-dialog label{display:block;font-weight:700;font-size:13.5px;margin:12px 0 0}
.tk-dialog textarea,.tk-dialog input{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;font-weight:500}
.tk-dialog-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:14px}
.tk-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}
.tk-legal{font-size:13px}
.tk-empty-inner h2{font-size:1.35rem;margin:0 0 8px}

/* ---- v12: number box joined to its unit box ---- */
.tk-uin{display:flex;align-items:stretch;margin-top:6px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;transition:border-color .15s,box-shadow .15s}
.tk-uin:focus-within{border-color:#c77a4b;box-shadow:0 0 0 3px rgba(199,122,75,.15)}
.tk-uin input{flex:1;min-width:0;border:0!important;border-radius:0!important;margin:0!important;box-shadow:none!important;outline:none;background:transparent}
.tk-uin-pre{display:flex;align-items:center;padding:0 4px 0 14px;font-weight:700;color:#536775}
.tk-u{display:flex;align-items:stretch;background:#eef3f7;border-left:2px solid #c9d6df;color:#10283f}
.tk-u select{appearance:none;-webkit-appearance:none;border:0!important;margin:0!important;background:transparent;padding:0 6px 0 12px;font-weight:700;color:#10283f;cursor:pointer;min-width:46px;border-radius:0!important;box-shadow:none!important}
.tk-u select:focus-visible{outline:2px solid #c77a4b;outline-offset:-2px}
.tk-u-fixed{align-items:center;padding:0 14px;font-weight:700;font-size:14px}
.tk-ustep{display:flex;flex-direction:column;border-left:1px solid #c9d6df}
.tk-ustep button{flex:1;border:0;background:transparent;color:#536775;font-size:9px;line-height:1;padding:0 9px;cursor:pointer;min-height:22px}
.tk-ustep button:hover,.tk-ustep button:focus-visible{background:#dde7ee;color:#10283f}
.tk-ustep button+button{border-top:1px solid #c9d6df}
.tk-value{margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.18)}
.tk-value .tk-res-main strong{color:#f3c6a5}
@media (prefers-color-scheme:dark){.tk-uin{background:transparent}.tk-u{background:rgba(255,255,255,.06);color:inherit}.tk-u select{color:inherit}}
.tk-uin input[type=number]::-webkit-inner-spin-button,.tk-uin input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.tk-uin input[type=number]{-moz-appearance:textfield;appearance:textfield}

/* ---- v12: copy composition / nearest grades ---- */
.tk-comp-acts{display:grid;gap:6px;margin:10px 0 4px}
.tk-comp-act{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px}
.tk-comp-act>span{font-weight:700;color:#536775;margin-right:4px}
.tk-mini{border:1px solid var(--line);background:#fff;color:#10283f;border-radius:999px;padding:5px 12px;font:600 12.5px/1.2 inherit;cursor:pointer;min-height:30px}
.tk-mini:hover,.tk-mini:focus-visible{border-color:#c77a4b}
.tk-mini-p{background:#10283f;color:#fff;border-color:#10283f}.tk-mini-p:hover{background:#173b56}
.tk-near{margin-top:22px;border:1px solid var(--line);border-radius:16px;padding:20px 22px;background:#fbfcfd}
.tk-near-in textarea{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:500 14px/1.5 ui-monospace,Consolas,monospace;resize:vertical}
.tk-near-read{font-size:12.5px;color:#56656f;margin-right:6px;align-self:center}
.tk-near-actions{display:flex;gap:14px;align-items:center;margin:6px 0 10px}
.tk-chk{display:flex!important;flex-direction:row!important;align-items:center;gap:8px;font-weight:600}
.tk-near-item{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.tk-near-rank{flex:0 0 26px;height:26px;border-radius:50%;background:#eef3f7;display:grid;place-items:center;font-weight:800;font-size:12.5px;color:#10283f}
.tk-near-main{flex:1;min-width:0}
.tk-near-name{background:none;border:0;padding:0;font:800 15.5px/1.3 inherit;color:#10283f;cursor:pointer;text-decoration:underline;text-underline-offset:3px;text-decoration-color:#c9d6df}
.tk-near-name:hover{text-decoration-color:#c77a4b}
.tk-near-meter{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:6px 0 4px;font-size:13px}
.tk-near-meter .tk-bar{width:120px;height:8px;border-radius:99px;background:#e6edf2;overflow:hidden;display:inline-block}
.tk-near-meter .tk-bar i{display:block;height:100%;border-radius:99px;background:#2e7d5b}
.tk-near-meter .tk-bar i.tk-near-mid{background:#5d9c59}.tk-near-meter .tk-bar i.tk-warn{background:#c98a2b}.tk-near-meter .tk-bar i.tk-bad{background:#b3261e}
.tk-near-lbl{font-weight:700}
.tk-near-diffs{display:flex;flex-wrap:wrap;gap:6px}
.tk-near-diffs span{font-size:12.5px;background:#f2f5f8;border-radius:6px;padding:3px 8px;color:#33475a}
.tk-near .tk-chk{align-self:end;padding-bottom:10px;font-size:13.5px}

/* Search landing pages: reference tables, FAQ, related tools, grade index (added 25 Oct 2026) */
.seo-after{padding:2.5rem 0 3.5rem;background:#f7f8fa}
.seo-after h2{font-size:1.35rem;margin:2rem 0 .8rem;color:#10283f}
.seo-after h2:first-child{margin-top:0}
.seo-after p{max-width:72ch;color:#3d4b5c}
.seo-table td small{color:#6a7686;font-size:.78em}
.seo-faq details{background:#fff;border:1px solid #e3e7ec;border-radius:10px;padding:.85rem 1.1rem;margin:.55rem 0}
.seo-faq summary{cursor:pointer;font-weight:600;color:#10283f}
.seo-faq p{margin:.6rem 0 0}
.seo-related{display:flex;flex-wrap:wrap;gap:.6rem;list-style:none;padding:0}
.seo-related a{display:inline-block;padding:.5rem .9rem;border:1px solid #d7dde4;border-radius:999px;background:#fff;color:#10283f;text-decoration:none;font-weight:600;font-size:.92rem}
.seo-related a:hover{border-color:#c8662b;color:#c8662b}
.seo-grade-index{columns:3 260px;column-gap:2rem}
.seo-fam{break-inside:avoid;margin-bottom:1.2rem}
.seo-fam h3{font-size:.95rem;margin:0 0 .35rem;color:#c8662b;text-transform:uppercase;letter-spacing:.04em}
.seo-fam ul{list-style:none;padding:0;margin:0}
.seo-fam li{margin:.15rem 0}
.seo-fam a{color:#10283f;text-decoration:none}
.seo-fam a:hover{text-decoration:underline}
.grade-page .gp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.4rem;margin-top:1.4rem}
.grade-page .gp-card{background:#fff;border:1px solid #e3e7ec;border-radius:14px;padding:1.2rem 1.3rem}
.grade-page .gp-card h2{font-size:1.1rem;margin:0 0 .8rem}
.grade-page dl{display:grid;grid-template-columns:auto 1fr;gap:.35rem 1rem;margin:0}
.grade-page dt{color:#6a7686;font-weight:600}
.grade-page dd{margin:0}
.grade-page .gp-src{font-size:.86rem;color:#4d5a6a;background:#fff8f2;border-left:3px solid #c8662b;padding:.8rem 1rem;border-radius:6px;margin-top:1.4rem}
.grade-page .gp-cta{display:flex;flex-wrap:wrap;gap:.7rem;margin:1.2rem 0}