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@media(max-width:680px){.processing-controls{grid-template-columns:1fr}.stage-selector>span{width:100%;flex-basis:100%;order:3}.coefficient-summary{display:block}.coefficient-summary>div+div{margin-top:14px}.trace-controls{align-items:stretch;flex-direction:column}.trace-controls .field{max-width:none}.stage-selector .field{min-width:220px}.trace-array-grid canvas{height:410px}.source-note{font-size:10px}.stat-label{font-size:10px}.map-tools .segmented{flex-wrap:wrap}.stage-selector button{font-size:10px}}

#areaSummary{font-size:11px;line-height:1.75;color:var(--neutral-607780,#607780)}#areaSummary strong{display:block;margin-bottom:5px;color:var(--ink);font-size:12px}#areaSummary span{display:block}.trace-array-grid h3{margin:0 0 10px}

.import-panel{padding:18px 20px;margin-bottom:22px}.import-grid{display:grid;grid-template-columns:1fr 1fr auto;gap:15px;align-items:center}.import-slot{display:flex;align-items:center;flex-wrap:wrap;gap:10px;border:1px solid var(--line);border-radius:7px;padding:12px}.import-slot strong{font-size:11px;width:100%}.import-slot span{font-size:10px;color:var(--muted)}.file-label{cursor:pointer;background:var(--neutral-fff,#fff);border-radius:6px;display:inline-block}.file-label:hover{background:var(--neutral-edf3f2,#edf3f2)}.import-help,.import-privacy,.import-format p{font-size:10px;color:var(--muted);line-height:1.7;margin:12px 0 0}.import-privacy{margin-top:5px}.import-format{font-size:10px;color:var(--neutral-607b7c,#607b7c);margin-top:10px}.import-format summary{cursor:pointer}#importMessage{font-size:11px;margin:10px 0 0;color:#42675c}#importMessage.error-text{color:#ac4c3f!important}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.import-slot:focus-within{outline:2px solid #62aead;outline-offset:2px}button:disabled{cursor:default;opacity:.55}
@media(max-width:1000px){.import-grid{grid-template-columns:1fr 1fr}.import-grid>button{grid-column:1/-1;justify-self:start}}@media(max-width:680px){.import-grid{grid-template-columns:1fr}.import-panel{padding:15px}.import-panel .section-heading{display:block}}

/* Keep the supplied wordmark intact; the frame trims only its blank vertical margins.
   Source: 2048 × 768. Visible frame: y = 142…628 (28 px around the artwork). */
.topbar{height:auto;min-height:124px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px) minmax(0,1fr);gap:20px;padding-top:12px;padding-bottom:12px;background:var(--neutral-fff,#fff)}
.topbar-context{line-height:1.6}
.header-logo{position:relative;display:block;overflow:hidden;aspect-ratio:2048 / 486;width:100%;justify-self:center;background:var(--neutral-fff,#fff)}
.header-logo img{position:absolute;top:0;left:0;display:block;width:100%;height:auto;transform:translateY(-18.489583%)}
.header-logo:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.topbar .private-pill{justify-self:end}
@media(max-width:1190px){.topbar{grid-template-columns:minmax(0,1fr) minmax(0,400px) minmax(0,1fr);gap:16px}}
@media(max-width:930px){.topbar{gap:12px}}
@media(max-width:680px){.topbar{min-height:0;grid-template-columns:minmax(0,1fr);gap:8px;padding:14px 16px}.topbar .topbar-context{display:none}.header-logo{max-width:440px}.topbar .private-pill{justify-self:center}}
@media print{.topbar{display:none}}

.topbar-context{grid-column:1;grid-row:1}.header-logo{grid-column:2;grid-row:1}
.header-tools{grid-column:3;grid-row:1;justify-self:end;align-self:start;display:flex;flex-direction:column;align-items:flex-end;gap:12px;padding-top:2px}
.language-switch{display:flex;gap:2px;border:1px solid var(--line);border-radius:7px;background:var(--neutral-f5f8f6,#f5f8f6);padding:3px}
.language-switch button{min-width:34px;padding:6px 8px;border:0;border-radius:4px;background:transparent;color:var(--neutral-6d8178,#6d8178);font-size:11px;font-weight:600;cursor:pointer;line-height:1.3}
.language-switch button[aria-pressed="true"]{background:var(--neutral-fff,#fff);color:#176b61;box-shadow:0 1px 4px #1c4a3917}
.language-switch button:focus-visible{outline:2px solid #176b61;outline-offset:2px}
footer{display:flex;flex-direction:column;align-items:stretch;gap:15px;font-size:15px;font-weight:700;line-height:1.8;color:var(--neutral-687e74,#687e74)}
.footer-identity p{margin:0}.footer-identity a{color:#286c63;text-decoration:none}.footer-identity a:hover{text-decoration:underline}
.footer-identity span{display:inline;margin:0}.export-actions{display:flex;justify-content:flex-end;margin-top:28px}.export-actions .export-btn{margin:0;font-size:12px;padding:11px 17px}
html[lang="zh-Hans"] body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
@media(max-width:680px){.topbar{gap:12px}.header-tools{grid-column:1;grid-row:1;flex-direction:row;align-items:center;gap:10px;padding:0}.header-tools .language-switch{order:2}.header-logo{grid-column:1;grid-row:2}.export-actions{justify-content:stretch}.export-actions .export-btn{width:100%}}
@media print{footer,.export-actions{display:none}}

.page-heading>div{min-width:0;max-width:100%}.page-heading h1{overflow-wrap:anywhere}
.page-heading .eyebrow{margin-bottom:8px}
.documented-panel{margin:0 0 18px;padding:18px 20px}.profile-row{display:grid;grid-template-columns:minmax(210px,.8fr) minmax(0,1.8fr);gap:24px;align-items:start}.active-method-info{font-size:11px;line-height:1.75}.active-method-info strong{font-size:12px}.active-method-info p{margin:5px 0;color:var(--muted)}.active-method-info a,.method-comparison a{color:#176b61;font-size:10px}.documented-options{font-size:11px;line-height:1.8;margin-top:15px}.documented-options summary{cursor:pointer;font-weight:600;color:#355f59}.documented-options p{color:var(--muted);margin:10px 0}.documented-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:14px 0}.documented-controls .check-label{align-self:center}.documented-controls input[type=number]{width:100%;padding:8px;border:1px solid var(--line);border-radius:5px;background:var(--neutral-fff,#fff)}.method-comparison{max-height:none}.method-comparison table{min-width:800px;white-space:normal;text-align:left;table-layout:fixed}.method-comparison th:first-child{width:30%}.method-comparison th:last-child{width:28%}.method-comparison td,.method-comparison th{font-size:11px;text-align:left;line-height:1.6;vertical-align:top}.method-comparison small{display:block;margin-top:5px}.method-comparison tr{cursor:default}.all-methods>.field{max-width:180px;margin:12px 0}.all-methods table{min-width:600px}.all-methods td{font-size:11px}.all-methods th{font-size:10px;white-space:normal}.export-actions{gap:12px;flex-wrap:wrap}
@media(max-width:900px){.profile-row{grid-template-columns:1fr;gap:14px}.documented-controls{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.documented-panel{padding:15px}.documented-controls{grid-template-columns:1fr}.export-actions{flex-direction:column}.export-actions .export-btn{width:100%}}

.processing-cut{border:1px solid var(--line);border-radius:10px;background:var(--neutral-fff,#fff)}
.processing-cut>summary{display:flex;align-items:center;gap:12px;padding:18px 20px;cursor:pointer;list-style:none}
.processing-cut>summary::-webkit-details-marker{display:none}
.processing-cut>summary::before{content:'▸';color:var(--teal);font-size:18px;flex:none}
.processing-cut[open]>summary::before{content:'▾'}
.processing-cut>summary h2{margin:0;font-size:17px;font-weight:600;line-height:1.4}
.processing-cut[open]>summary{border-bottom:1px solid var(--line);margin-bottom:18px}
.processing-content{padding:0 20px 20px}
.processing-content>.section-heading{flex-wrap:wrap;gap:12px}
.processing-content>.section-heading>p{font-size:11px;line-height:1.7;margin:0;color:var(--muted);flex:1;min-width:200px}
@media(max-width:680px){.processing-cut>summary{padding:15px}.processing-content{padding:0 15px 15px}.processing-cut>summary h2{font-size:16px}}

/* Invert neutral UI tones only; accents and all measurement palettes stay unchanged. */
:root{color-scheme:light}
:root[data-theme="dark"]{color-scheme:dark;--neutral-183033:#e7cfcc;--neutral-19352d21:#e6cad221;--neutral-20352d06:#dfcad206;--neutral-20382e12:#dfc7d112;--neutral-506765:#af989a;--neutral-59707c:#a68f83;--neutral-5f7975:#a0868a;--neutral-607578:#9f8a87;--neutral-607780:#9f887f;--neutral-607b7c:#9f8483;--neutral-687e74:#97818b;--neutral-697b7d:#968482;--neutral-697e81:#96817e;--neutral-6d7c7a:#928385;--neutral-6d8178:#927e87;--neutral-6e8490:#917b6f;--neutral-708184:#8f7e7b;--neutral-748681:#8b797e;--neutral-7b8b85:#84747a;--neutral-81918a:#7e6e75;--neutral-85928e:#7a6d71;--neutral-8b9795:#74686a;--neutral-8c9997:#736668;--neutral-8c9a97:#736568;--neutral-8c9b9b:#736464;--neutral-95a29b:#6a5d64;--neutral-b6c0be:#493f41;--neutral-d7ece6:#281319;--neutral-d8e2df:#271d20;--neutral-dae8df:#251720;--neutral-dce5ed:#231a12;--neutral-dde5e2:#221a1d;--neutral-e2f2ec:#1d0d13;--neutral-e3e9e8:#1c1617;--neutral-e8e0d3:#171f2c;--neutral-e8eeeb:#171114;--neutral-eaf0f5:#150f0a;--neutral-eaf4ef:#150b10;--neutral-eaf4f1:#150b0e;--neutral-ebf0ed:#140f12;--neutral-ebf5ef:#140a10;--neutral-eceef7:#131108;--neutral-edf1ef:#120e10;--neutral-edf3f2:#120c0d;--neutral-eef2ef:#110d10;--neutral-eef3f0:#110c0f;--neutral-eef3f6:#110c09;--neutral-f2f7f4:#0d080b;--neutral-f4f7f6:#0b0809;--neutral-f5f0e5:#0a0f1a;--neutral-f5f7f6:#0a0809;--neutral-f5f8f6:#0a0709;--neutral-f7f3eb:#080c14;--neutral-fafcfb:#050304;--neutral-fff:#000000;--ink:#fff;--muted:#b8b8b8;--bg:#080808;--white:#000;--line:#383838}

.header-switches{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.theme-switch{display:flex;gap:2px;border:1px solid var(--line);border-radius:7px;background:var(--neutral-f5f8f6,#f5f8f6);padding:3px}
.theme-switch button{padding:6px 9px;border:0;border-radius:4px;background:transparent;color:var(--muted);font-size:11px;font-weight:600;line-height:1.3;white-space:nowrap}
.theme-switch button[aria-pressed="true"]{background:var(--white);color:var(--ink);box-shadow:0 1px 4px #00000017}
:root[data-theme="dark"] .header-logo img{filter:invert(1)}
:root[data-theme="dark"] .canvas-wrap{background:#000}
:root[data-theme="dark"] .map-tooltip{color:#fff}
:root[data-theme="dark"] input:not([type="checkbox"]):not([type="range"]){background:#000;color:#fff}
@media(max-width:1190px){.topbar{grid-template-columns:minmax(0,.6fr) minmax(0,400px) minmax(230px,1fr)}.header-tools{min-width:0}}
@media(max-width:930px){.topbar{grid-template-columns:minmax(0,1fr) minmax(230px,.9fr)}.topbar-context{display:none}.header-logo{grid-column:1}.header-tools{grid-column:2}}
@media(max-width:680px){.topbar{grid-template-columns:minmax(0,1fr)}.header-tools{grid-column:1;width:100%;justify-content:space-between;flex-wrap:wrap}.header-switches{justify-content:flex-end;flex:1}.header-logo{grid-column:1;grid-row:2}}