:root {
  --ink: #102426;
  --deep: #0b1e21;
  --deep-2: #132d30;
  --paper: #f3f0e8;
  --paper-2: #ebe7dc;
  --white: #fffdf7;
  --muted: #5d6c6b;
  --line: #c8cec6;
  --line-dark: #355053;
  --silica: #55c8b5;
  --silica-dark: #167d70;
  --amber: #f0a44b;
  --amber-dark: #9b5612;
  --purple: #8b7cc5;
  --red: #d86755;
  --shadow: 0 20px 60px rgba(5, 25, 27, .12);
  --radius: 4px;
  --max: 1320px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: auto;
  scroll-padding-top: 116px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-size: 18px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: .38;
  background-image:
    linear-gradient(rgba(16, 36, 38, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 36, 38, .035) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

a { color: var(--silica-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #0c5f56; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }
[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--deep);
  background: var(--amber);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.safety-ribbon {
  display: flex;
  min-height: 38px;
  padding: 7px max(24px, calc((100vw - var(--max)) / 2));
  gap: 0;
  align-items: center;
  color: #dcebea;
  background: #071517;
  font-size: 13px;
  letter-spacing: .06em;
}
.safety-ribbon span { display: inline-flex; align-items: center; }
.safety-ribbon span:not(:last-child)::after { margin: 0 14px; color: var(--silica); content: "•"; }
.safety-ribbon strong { margin-right: 7px; color: var(--amber); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  min-height: 78px;
  padding: 12px max(24px, calc((100vw - var(--max)) / 2));
  grid-template-columns: auto 1fr auto;
  gap: 32px;
  align-items: center;
  border-bottom: 1px solid rgba(85, 200, 181, .22);
  color: var(--white);
  background: rgba(11, 30, 33, .96);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: var(--white);
  text-decoration: none;
  line-height: 1.15;
}
.brand:hover { color: var(--white); }
.brand b { display: block; color: var(--silica); font-size: 14px; letter-spacing: .15em; }
.brand small { font-size: 14px; }
.brand-mark { display: flex; width: 34px; height: 34px; gap: 3px; align-items: flex-end; }
.brand-mark i { display: block; width: 8px; border: 2px solid var(--silica); border-radius: 8px 8px 3px 3px; }
.brand-mark i:nth-child(1) { height: 20px; }
.brand-mark i:nth-child(2) { height: 32px; }
.brand-mark i:nth-child(3) { height: 25px; }

.primary-nav { display: flex; justify-content: center; gap: 24px; }
.primary-nav a { color: #c4d4d2; font-size: 14px; text-decoration: none; }
.primary-nav a:hover { color: var(--silica); }

.print-button,
.copy-button {
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  color: var(--white);
  background: transparent;
  cursor: pointer;
}
.print-button { padding: 8px 13px; font-size: 14px; }
.print-button:hover { border-color: var(--silica); color: var(--silica); }

.section-shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.eyebrow { margin: 0 0 14px; color: var(--silica-dark); font-size: 13px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.section-index { float: left; width: 84px; color: rgba(16, 36, 38, .28); font: 700 50px/1 ui-monospace, monospace; }
.section-heading { max-width: 920px; margin: 0 0 38px 108px; }
.section-heading h2 { margin: 0 0 12px; font-size: clamp(34px, 4vw, 58px); line-height: 1.08; letter-spacing: -.035em; }
.section-heading p:last-child { max-width: 800px; margin: 0; color: var(--muted); }
.section-heading.light h2 { color: var(--white); }
.section-heading.light p:last-child { color: #b8cac8; }
.section-heading.light + * { clear: both; }

.hero {
  display: grid;
  min-height: 710px;
  padding-block: 92px 70px;
  grid-template-columns: minmax(0, 1.1fr) minmax(420px, .9fr);
  gap: 80px;
  align-items: center;
}
.hero h1 { margin: 0 0 30px; font-size: clamp(52px, 6.5vw, 96px); line-height: .96; letter-spacing: -.06em; }
.hero h1 span { color: var(--silica-dark); }
.hero-lead { max-width: 780px; margin: 0; font-size: clamp(20px, 2vw, 25px); line-height: 1.58; }
.hero-actions { display: flex; margin: 32px 0 28px; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; min-height: 48px; padding: 10px 18px; align-items: center; justify-content: center; border: 1px solid var(--deep); border-radius: var(--radius); cursor: pointer; text-decoration: none; }
.button.primary { color: var(--white); background: var(--deep); }
.button.primary:hover { color: var(--deep); background: var(--silica); }
.button.ghost { color: var(--deep); background: transparent; }
.button.ghost:hover { background: var(--paper-2); }
.hero-source { max-width: 780px; margin: 0; color: var(--muted); font-size: 14px; }

.hero-bench { position: relative; padding: 26px; overflow: hidden; border: 1px solid var(--line-dark); color: var(--white); background: var(--deep); box-shadow: var(--shadow); }
.hero-bench::before { position: absolute; inset: 0; content: ""; opacity: .2; background: radial-gradient(circle at 1px 1px, var(--silica) 1px, transparent 1.2px); background-size: 20px 20px; }
.bench-head, .route-rails, .fragment-ruler, .bench-caption { position: relative; }
.bench-head { display: flex; padding-bottom: 16px; justify-content: space-between; border-bottom: 1px solid var(--line-dark); font-size: 12px; letter-spacing: .12em; }
.bench-head b { color: var(--silica); }
.route-rails { display: grid; margin: 30px 0 26px; padding: 0; gap: 20px; list-style: none; }
.route-rails li { display: grid; grid-template-columns: 34px minmax(160px, auto) 1fr 18px; gap: 12px; align-items: center; }
.route-code { display: grid; width: 32px; height: 32px; place-items: center; border: 1px solid var(--silica); border-radius: 50%; color: var(--silica); font: 700 13px ui-monospace, monospace; }
.route-rails b, .route-rails small { display: block; }
.route-rails b { font-size: 16px; }
.route-rails small { color: #9eb5b3; font-size: 12px; }
.rail { height: 1px; background: linear-gradient(90deg, var(--silica), transparent); }
.bead-dot { width: 16px; height: 16px; border: 3px solid var(--deep); border-radius: 50%; background: var(--silica); box-shadow: 0 0 0 1px var(--silica), 0 0 15px rgba(85, 200, 181, .8); }
.bead-dot.nano { width: 11px; height: 11px; }
.fragment-ruler { display: flex; height: 62px; padding: 0 14px; gap: 12px; align-items: flex-end; justify-content: center; border-bottom: 1px solid var(--line-dark); }
.fragment-ruler span { width: 5px; height: var(--h); border-radius: 4px 4px 0 0; background: var(--amber); opacity: .85; }
.bench-caption { margin: 14px 0 0; color: #9eb5b3; font: 12px/1.6 ui-monospace, monospace; text-align: center; }

.hazard-strip { display: grid; padding: 30px max(24px, calc((100vw - var(--max)) / 2)); grid-template-columns: 360px 1fr; gap: 50px; color: var(--white); background: var(--amber-dark); }
.hazard-strip .eyebrow { color: #ffd9aa; }
.hazard-strip h2 { margin: 0; font-size: 28px; line-height: 1.2; }
.hazard-strip ul { display: grid; margin: 0; padding: 0; gap: 6px; list-style: none; }
.hazard-strip li::before { margin-right: 10px; color: var(--amber); content: "▰"; }

.decision, .bead-section, .patent-section, .review-section, .final-caution { padding-block: 110px; }
.legend { display: grid; max-width: 1040px; margin: 0 0 52px 108px; grid-template-columns: max-content 1fr max-content 1fr; gap: 12px 18px; align-items: center; font-size: 14px; }
.label { display: inline-flex; min-height: 24px; padding: 3px 8px; align-items: center; border-radius: 2px; font-size: 12px; font-weight: 800; letter-spacing: .06em; white-space: nowrap; }
.label.fact { color: #07564b; background: #bfeee5; }
.label.inference { color: #71420c; background: #ffe0a8; }
.label.gate { color: #21465e; background: #cfe6f4; }
.label.patent { color: #44366e; background: #e3dcfa; }
.decision-grid { clear: both; display: grid; margin-left: 108px; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.decision-grid article { position: relative; min-height: 245px; padding: 34px 36px 30px 74px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255, 253, 247, .46); }
.decision-no { position: absolute; top: 34px; left: 26px; color: var(--silica-dark); font: 700 18px ui-monospace, monospace; }
.decision-grid h3 { margin: 0 0 12px; font-size: 24px; }
.decision-grid p { margin: 0; color: var(--muted); }

.route-workbench { padding-block: 110px; border-top: 1px solid var(--line); background: #e8e5dc; }
.route-intro { margin-bottom: 34px; }
.tab-shell { clear: both; }
.sample-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line-dark); background: var(--deep); }
.sample-tabs button { min-height: 112px; padding: 18px 20px; border: 0; border-right: 1px solid var(--line-dark); color: #c9d8d6; background: transparent; text-align: left; cursor: pointer; }
.sample-tabs button:last-child { border-right: 0; }
.sample-tabs button:hover { background: var(--deep-2); }
.sample-tabs button[aria-selected="true"] { color: var(--deep); background: var(--silica); }
.sample-tabs span, .sample-tabs b, .sample-tabs small { display: block; }
.sample-tabs span { margin-bottom: 9px; font: 700 12px ui-monospace, monospace; }
.sample-tabs b { font-size: 18px; }
.sample-tabs small { opacity: .75; font-size: 13px; }

.protocol-panel { padding: 56px; border: 1px solid var(--line-dark); border-top: 0; background: var(--white); box-shadow: 0 24px 70px rgba(12, 35, 37, .08); }
.protocol-head { display: grid; grid-template-columns: 1.35fr .65fr; gap: 60px; align-items: start; }
.protocol-code { margin: 0 0 8px; color: var(--silica-dark); font: 800 13px ui-monospace, monospace; letter-spacing: .16em; }
.protocol-head h3 { margin: 0 0 16px; font-size: clamp(29px, 3vw, 44px); line-height: 1.14; letter-spacing: -.025em; }
.protocol-head p { margin-top: 0; }
.inline-sources { color: var(--muted); font-size: 14px; }
.inline-sources .label { margin-right: 6px; }
.protocol-specs { margin: 0; border-top: 3px solid var(--silica-dark); }
.protocol-specs div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.protocol-specs dt { color: var(--muted); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.protocol-specs dd { margin: 3px 0 0; font-size: 16px; font-weight: 700; line-height: 1.45; }
.preflight { display: grid; margin: 38px 0; padding: 20px 24px; grid-template-columns: 180px 1fr; gap: 20px; border-left: 4px solid var(--amber); background: #f6ead9; }
.preflight p { margin: 0; }

.formula-layout { display: grid; margin-top: 42px; grid-template-columns: minmax(0, 1.28fr) minmax(300px, .72fr); gap: 24px; align-items: stretch; }
.formula-sheet { border: 1px solid var(--line-dark); background: #f5f7f2; }
.formula-title { display: flex; min-height: 76px; padding: 14px 18px; justify-content: space-between; gap: 20px; align-items: center; color: var(--white); background: var(--deep); }
.formula-title h4 { display: inline; margin: 0 0 0 9px; font-size: 18px; }
.copy-button { padding: 7px 11px; font-size: 13px; white-space: nowrap; }
.copy-button:hover { border-color: var(--silica); color: var(--silica); }
.formula-sheet pre { margin: 0; padding: 24px; overflow: auto; color: #193638; background: transparent; font: 14px/1.78 "Cascadia Mono", Consolas, monospace; white-space: pre-wrap; }
.formula-note { margin: 0; padding: 14px 20px; border-top: 1px dashed var(--line); color: var(--muted); font-size: 13px; }
.alternate-sheet { padding: 24px; border-top: 4px solid var(--amber); background: var(--paper-2); }
.alternate-sheet h4 { margin: 0 0 18px; font-size: 20px; }
.alternate-sheet > div { padding: 17px 0; border-top: 1px solid var(--line); }
.alternate-sheet > div b { color: var(--amber-dark); }
.alternate-sheet > div p { margin: 6px 0 0; font-size: 15px; }

.process-line { display: grid; margin: 42px 0; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-line div { position: relative; min-height: 130px; padding: 22px 20px; border-right: 1px solid var(--line); }
.process-line div:last-child { border-right: 0; }
.process-line div:not(:last-child)::after { position: absolute; top: 50%; right: -7px; z-index: 1; width: 12px; height: 12px; border-top: 1px solid var(--line); border-right: 1px solid var(--line); background: var(--white); content: ""; transform: rotate(45deg); }
.process-line span, .process-line b, .process-line small { display: block; }
.process-line span { color: var(--silica-dark); font: 800 12px ui-monospace, monospace; }
.process-line b { margin: 8px 0 4px; }
.process-line small { color: var(--muted); font-size: 12px; line-height: 1.4; }
.process-line .critical { color: var(--white); background: var(--amber-dark); }
.process-line .critical span, .process-line .critical small { color: #ffe2bb; }
.process-line .critical::after { background: var(--amber-dark) !important; }

.doe-qc-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 38px; }
.doe-qc-grid h4 { margin: 0 0 14px; font-size: 21px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); background: var(--paper-2); font-size: 12px; letter-spacing: .06em; }
td { font-size: 14px; }
.qc-gates { padding: 22px; color: var(--white); background: var(--deep); }
.qc-gates h4 { display: flex; gap: 10px; align-items: center; }
.qc-gates ul { margin: 0; padding: 0; list-style: none; }
.qc-gates li { display: flex; padding: 10px 0; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--line-dark); font-size: 14px; }
.qc-gates li b { color: var(--silica); text-align: right; }
.qc-gates p { margin-bottom: 0; color: #9eb5b3; font-size: 12px; }

.bead-visual { clear: both; display: flex; margin: 10px 0 45px 108px; min-height: 210px; gap: 30px; align-items: center; justify-content: center; border-block: 1px solid var(--line); }
.bead-figure { display: grid; width: 220px; justify-items: center; text-align: center; }
.bead-figure i { display: block; margin-bottom: 14px; border: 5px solid rgba(255, 255, 255, .8); border-radius: 50%; background: radial-gradient(circle at 35% 30%, #b8fff3, var(--silica-dark) 38%, #092d2e 73%); box-shadow: 0 0 0 1px var(--silica-dark), 0 12px 30px rgba(20, 95, 88, .22); }
.bead-figure.nano i { width: 46px; height: 46px; }
.bead-figure.primary i { width: 86px; height: 86px; }
.bead-figure.macro i { width: 120px; height: 120px; }
.bead-figure span { font-weight: 800; }
.bead-figure small { color: var(--muted); font-size: 12px; }
.bead-arrow { color: var(--line-dark); font-size: 28px; }
.table-scroll { clear: both; margin-left: 108px; overflow-x: auto; border: 1px solid var(--line); }
.selection-table { min-width: 880px; background: var(--white); }
.selection-table th, .selection-table td { padding: 18px; }
.selection-table td { font-size: 15px; }
.status { display: inline-flex; padding: 4px 8px; border-radius: 2px; font-size: 11px; font-weight: 800; white-space: nowrap; }
.status.preferred { color: #07564b; background: #bfeee5; }
.status.explore { color: #71420c; background: #ffe0a8; }
.status.hold { color: #5f5d5a; background: #dedbd2; }
.status.compare { color: #44366e; background: #e3dcfa; }
.incoming-qc { display: grid; margin: 56px 0 0 108px; grid-template-columns: 270px 1fr; gap: 34px; }
.incoming-qc h3 { margin: 0; font-size: 30px; line-height: 1.2; }
.incoming-qc ol { display: grid; margin: 0; padding: 0; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); list-style: none; counter-reset: inqc; }
.incoming-qc li { display: grid; padding: 16px; grid-template-columns: 105px 1fr; gap: 12px; border-bottom: 1px solid var(--line); counter-increment: inqc; }
.incoming-qc li:nth-child(odd) { border-right: 1px solid var(--line); }
.incoming-qc b::before { margin-right: 7px; color: var(--silica-dark); content: counter(inqc, decimal-leading-zero); font: 700 11px ui-monospace, monospace; }
.incoming-qc span { color: var(--muted); font-size: 14px; }

.doe-section, .supply-section, .source-section { padding-block: 110px; color: var(--white); background: var(--deep); }
.doe-board { clear: both; display: grid; margin-left: 108px; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.doe-phase { min-height: 250px; padding: 26px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.doe-phase span { color: var(--silica); font: 800 12px ui-monospace, monospace; }
.doe-phase h3 { margin: 36px 0 12px; font-size: 22px; }
.doe-phase p { margin: 0; color: #aac0be; font-size: 15px; }
.controls-strip { display: grid; margin: 42px 0 0 108px; padding: 25px; grid-template-columns: 210px 1fr; gap: 30px; border-left: 4px solid var(--amber); background: #142f32; }
.controls-strip h3 { margin: 0; font-size: 21px; }
.controls-strip ul { display: flex; margin: 0; padding: 0; gap: 8px; flex-wrap: wrap; list-style: none; }
.controls-strip li { padding: 7px 10px; border: 1px solid var(--line-dark); color: #c7d8d6; font-size: 13px; }
.response-matrix { margin: 52px 0 0 108px; }
.response-matrix h3 { margin: 0 0 18px; font-size: 26px; }
.response-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.response-grid div { padding: 20px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.response-grid span, .response-grid b, .response-grid small { display: block; }
.response-grid span { color: var(--silica); font: 800 11px ui-monospace, monospace; }
.response-grid b { margin: 6px 0; }
.response-grid small { color: #9eb5b3; }

.patent-boundary { clear: both; display: grid; margin-left: 108px; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.patent-boundary > div { padding: 28px; background: var(--white); }
.patent-boundary h3 { margin: 12px 0; font-size: 24px; }
.patent-boundary ul { margin-bottom: 0; padding-left: 20px; }
.patent-timeline { display: grid; margin: 50px 0 0 108px; grid-template-columns: repeat(4, 1fr); border-top: 3px solid var(--purple); }
.patent-timeline article { min-height: 310px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255, 253, 247, .5); }
.patent-timeline article:first-child { border-left: 1px solid var(--line); }
.patent-year { min-height: 42px; color: #5c4f8f; font: 800 12px ui-monospace, monospace; letter-spacing: .08em; }
.patent-timeline h3 { margin: 0 0 12px; font-size: 20px; }
.patent-timeline p { min-height: 154px; font-size: 14px; }
.status.public { color: #07564b; background: #bfeee5; }
.status.monitor { color: #44366e; background: #e3dcfa; }
.legal-note { margin: 30px 0 0 108px; padding: 18px 22px; border-left: 4px solid var(--purple); background: #e9e3f4; }

.buyer-ambiguity { clear: both; display: grid; margin-left: 108px; grid-template-columns: 1fr 1fr; gap: 20px; }
.buyer-ambiguity > div { padding: 24px; border-top: 3px solid var(--amber); background: var(--deep-2); }
.buyer-ambiguity span { color: var(--amber); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.buyer-ambiguity h3 { margin: 7px 0; }
.buyer-ambiguity p { margin: 0; color: #acc1bf; }
.supplier-columns { display: grid; margin: 45px 0 0 108px; grid-template-columns: 1fr 1fr; gap: 42px; }
.supplier-columns section > header { display: flex; padding-bottom: 15px; gap: 14px; align-items: center; border-bottom: 1px solid var(--line-dark); }
.supplier-columns header span { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid var(--silica); border-radius: 50%; color: var(--silica); font: 800 11px ui-monospace, monospace; }
.supplier-columns h3 { margin: 0; }
.supplier-list { margin: 0; padding: 0; list-style: none; }
.supplier-list li { border-bottom: 1px solid var(--line-dark); }
.supplier-list a, .supplier-inline { display: grid; padding: 16px 3px; grid-template-columns: 190px 1fr; gap: 18px; color: var(--white); text-decoration: none; }
.supplier-list a:hover b { color: var(--silica); }
.supplier-list span { color: #a9bfbd; font-size: 14px; }
.supplier-inline span a { display: inline; padding: 0; color: var(--silica); }
.benchmark-row { display: flex; margin: 42px 0 0 108px; padding: 18px 0; gap: 12px; align-items: center; flex-wrap: wrap; border-block: 1px solid var(--line-dark); }
.benchmark-row span { margin-right: 8px; color: var(--amber); font-weight: 800; }
.benchmark-row a { padding: 5px 9px; border: 1px solid var(--line-dark); color: #cce6e1; text-decoration: none; }
.potential-buyers { margin: 32px 0 0 108px; padding: 20px 24px; border-left: 4px solid var(--purple); background: #142f32; }
.potential-buyers h3 { margin: 0 0 8px; }
.potential-buyers p { margin: 0; color: #b9cdca; }
.potential-buyers a { color: #9fdbcF; }

.review-consensus { clear: both; display: grid; margin-left: 108px; padding: 24px; grid-template-columns: 160px 1fr; gap: 24px; border-left: 5px solid var(--silica-dark); background: #d9ece6; }
.review-consensus span { font-weight: 800; }
.review-consensus p { margin: 0; }
.review-ledger { margin: 42px 0 0 108px; border-top: 1px solid var(--line); }
.review-ledger article { display: grid; grid-template-columns: .85fr 1fr 1.35fr; border-bottom: 1px solid var(--line); }
.review-ledger article > div { padding: 24px; border-right: 1px solid var(--line); }
.issue { position: relative; padding-left: 62px !important; }
.issue span { position: absolute; left: 20px; color: var(--silica-dark); font: 800 12px ui-monospace, monospace; }
.issue h3 { margin: 0; font-size: 20px; }
.model-position b { display: block; margin-bottom: 8px; font-size: 13px; letter-spacing: .06em; }
.model-position p { margin: 0; font-size: 15px; }
.model-position.claude { background: #eee9f6; }
.model-position.claude b { color: #5c4f8f; }
.model-position.codex { background: #dff1ed; }
.model-position.codex b { color: #08665b; }

.source-tools { clear: both; display: grid; margin-left: 108px; grid-template-columns: minmax(280px, 1fr) auto auto; gap: 24px; align-items: end; }
.search-box span { display: block; margin-bottom: 6px; color: #a9bfbd; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.search-box input { width: 100%; min-height: 48px; padding: 10px 14px; border: 1px solid var(--line-dark); border-radius: 0; color: var(--white); background: #132c2f; }
.search-box input::placeholder { color: #77908e; }
.source-filters { display: flex; gap: 6px; flex-wrap: wrap; }
.source-filters button { min-height: 42px; padding: 8px 12px; border: 1px solid var(--line-dark); color: #c0d2d0; background: transparent; cursor: pointer; }
.source-filters button:hover, .source-filters button.is-active { border-color: var(--silica); color: var(--deep); background: var(--silica); }
.source-count { margin: 0 0 9px; color: #9db5b2; font-size: 13px; white-space: nowrap; }
.source-list { display: grid; margin: 32px 0 0 108px; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.source-item { display: grid; min-height: 130px; padding: 18px; grid-template-rows: auto auto 1fr; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); color: var(--white); text-decoration: none; }
.source-item:hover { color: var(--white); background: var(--deep-2); }
.source-item > span { color: var(--silica); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.source-item b { margin: 7px 0 4px; }
.source-item small { color: #9eb5b3; }
.source-empty { margin-left: 108px; padding: 30px; border: 1px dashed var(--line-dark); color: #b8cac8; }

.final-caution { text-align: center; }
.final-caution .eyebrow { text-align: center; }
.final-caution h2 { max-width: 950px; margin: 0 auto 20px; font-size: clamp(36px, 5vw, 70px); line-height: 1.03; letter-spacing: -.045em; }
.final-caution > p:not(.eyebrow) { max-width: 950px; margin: 0 auto; color: var(--muted); }
.final-actions { display: flex; margin-top: 28px; gap: 12px; justify-content: center; flex-wrap: wrap; }

.site-footer { display: grid; min-height: 190px; padding: 46px max(24px, calc((100vw - var(--max)) / 2)); grid-template-columns: 1fr 1fr auto; gap: 40px; align-items: start; color: #bad0cd; background: #071517; font-size: 14px; }
.site-footer b { color: var(--white); font-size: 18px; }
.site-footer p { margin: 4px 0; }
.site-footer a { color: var(--silica); }

.back-to-top { position: fixed; right: 22px; bottom: 22px; z-index: 90; display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid var(--silica); border-radius: 50%; color: var(--silica); background: var(--deep); opacity: 0; pointer-events: none; transform: translateY(12px); transition: .2s ease; cursor: pointer; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.toast { position: fixed; left: 50%; bottom: 26px; z-index: 200; min-width: 220px; padding: 12px 18px; color: var(--deep); background: var(--silica); box-shadow: var(--shadow); text-align: center; opacity: 0; pointer-events: none; transform: translate(-50%, 18px); transition: .2s ease; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1120px) {
  .primary-nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .hero { grid-template-columns: 1fr; gap: 48px; }
  .hero-bench { max-width: 760px; }
  .sample-tabs { grid-template-columns: 1fr 1fr; }
  .sample-tabs button:nth-child(2) { border-right: 0; }
  .sample-tabs button:nth-child(-n+2) { border-bottom: 1px solid var(--line-dark); }
  .protocol-head, .formula-layout, .doe-qc-grid { grid-template-columns: 1fr; }
  .process-line { grid-template-columns: 1fr 1fr; }
  .process-line div { border-bottom: 1px solid var(--line); }
  .process-line div::after { display: none; }
  .doe-board, .patent-timeline { grid-template-columns: 1fr 1fr; }
  .supplier-columns { grid-template-columns: 1fr; }
  .source-tools { grid-template-columns: 1fr; align-items: start; }
  .source-count { margin: 0; }
}

@media (max-width: 760px) {
  body { font-size: 16px; line-height: 1.68; }
  html { scroll-padding-top: 82px; }
  .safety-ribbon { padding: 7px 14px; overflow-x: auto; white-space: nowrap; }
  .site-header { min-height: 66px; padding: 10px 16px; }
  .brand small { display: none; }
  .print-button span { display: none; }
  .print-button { padding: 7px 10px; font-size: 12px; }
  .section-shell { width: min(calc(100% - 28px), var(--max)); }
  .hero { min-height: auto; padding-block: 62px 45px; grid-template-columns: minmax(0, 1fr); }
  .hero h1 { font-size: clamp(46px, 15vw, 68px); }
  .hero-lead { font-size: 18px; }
  .hero-actions .button { width: 100%; }
  .hero-bench { padding: 18px 14px; }
  .route-rails li { grid-template-columns: 32px 1fr 50px 14px; gap: 8px; }
  .route-rails small { font-size: 11px; }
  .hazard-strip { padding: 25px 18px; grid-template-columns: 1fr; gap: 20px; }
  .hazard-strip h2 { font-size: 24px; }
  .decision, .bead-section, .patent-section, .review-section, .final-caution, .doe-section, .supply-section, .source-section, .route-workbench { padding-block: 76px; }
  .section-index { float: none; width: auto; margin-bottom: 18px; font-size: 38px; }
  .section-heading, .legend, .decision-grid, .bead-visual, .table-scroll, .incoming-qc, .doe-board, .controls-strip, .response-matrix, .patent-boundary, .patent-timeline, .legal-note, .buyer-ambiguity, .supplier-columns, .benchmark-row, .potential-buyers, .review-consensus, .review-ledger, .source-tools, .source-list, .source-empty { margin-left: 0; }
  .section-heading { margin-bottom: 30px; }
  .section-heading h2 { font-size: 36px; }
  .legend { grid-template-columns: max-content 1fr; }
  .decision-grid, .patent-boundary, .buyer-ambiguity, .doe-board, .patent-timeline, .response-grid, .source-list { grid-template-columns: 1fr; }
  .decision-grid article { min-height: auto; padding: 25px 22px 24px 58px; }
  .decision-no { top: 25px; left: 20px; }
  .sample-tabs { position: sticky; top: 66px; z-index: 30; grid-template-columns: 1fr 1fr; }
  .sample-tabs button { min-height: 88px; padding: 11px; }
  .sample-tabs small { display: none; }
  .protocol-panel { padding: 26px 18px; }
  .protocol-head { gap: 24px; }
  .protocol-head h3 { font-size: 30px; }
  .preflight { grid-template-columns: 1fr; gap: 4px; }
  .formula-title { align-items: flex-start; }
  .formula-title h4 { display: block; margin: 8px 0 0; }
  .formula-sheet pre { padding: 18px 14px; font-size: 12px; line-height: 1.75; }
  .copy-button { margin-top: 2px; }
  .process-line { grid-template-columns: 1fr; }
  .process-line div { min-height: 90px; }
  .doe-qc-grid { gap: 24px; }
  .doe-qc-grid section:first-child { overflow-x: auto; }
  .doe-qc-grid table { min-width: 560px; }
  .bead-visual { min-height: auto; padding-block: 28px; flex-direction: column; }
  .bead-arrow { transform: rotate(90deg); }
  .incoming-qc { grid-template-columns: 1fr; }
  .incoming-qc ol { grid-template-columns: 1fr; }
  .incoming-qc li:nth-child(odd) { border-right: 0; }
  .incoming-qc li { grid-template-columns: 90px 1fr; }
  .doe-phase { min-height: auto; }
  .controls-strip { grid-template-columns: 1fr; }
  .review-consensus { grid-template-columns: 1fr; }
  .review-ledger article { grid-template-columns: 1fr; }
  .review-ledger article > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .supplier-list a, .supplier-inline { grid-template-columns: 1fr; gap: 4px; }
  .source-item { min-height: 115px; }
  .site-footer { grid-template-columns: 1fr; }
  .back-to-top { right: 14px; bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@media print {
  :root { --paper: #fff; --white: #fff; }
  body { color: #111; background: #fff; font-size: 11pt; }
  body::before, .safety-ribbon, .site-header, .hero-actions, .print-button, .copy-button, .back-to-top, .toast, .source-tools, .site-footer { display: none !important; }
  .section-shell { width: 100%; }
  .hero { min-height: 0; padding: 24pt 0; grid-template-columns: 1.2fr .8fr; }
  .hero h1 { font-size: 42pt; }
  .hero-bench, .doe-section, .supply-section, .source-section { color: #111; background: #fff; box-shadow: none; }
  .hero-bench { border: 1px solid #333; }
  .hero-bench *, .section-heading.light h2, .supplier-list a { color: #111 !important; }
  .route-workbench, .decision, .bead-section, .patent-section, .review-section, .final-caution, .doe-section, .supply-section, .source-section { padding-block: 28pt; }
  .sample-tabs { display: none; }
  .protocol-panel[hidden] { display: block !important; }
  .protocol-panel { margin-bottom: 24pt; padding: 18pt; border: 1px solid #555; box-shadow: none; break-before: page; }
  .protocol-head, .formula-layout, .doe-qc-grid { grid-template-columns: 1fr; }
  .process-line { grid-template-columns: repeat(5, 1fr); }
  .formula-sheet pre { color: #111; white-space: pre-wrap; }
  .qc-gates { color: #111; background: #fff; border: 1px solid #333; }
  .qc-gates li b, .qc-gates p { color: #111; }
  a { color: #111; text-decoration: none; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8pt; word-break: break-all; }
  .source-list { grid-template-columns: 1fr 1fr; }
  .source-item { color: #111; }
}