@charset "UTF-8";

:root {
  --paper: #f5f3e9;
  --paper-bright: #fcfbf6;
  --ink: #142f35;
  --muted: #66736f;
  --line: #d7dcd0;
  --teal: #1c5656;
  --navy: #102a33;
  --navy-deep: #0b2129;
  --lime: #d6e889;
  --orange: #eeaf77;
  --radius: 20px;
  --font: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font); font-size: 15px; line-height: 1.7; -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .48; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
img, svg, video, canvas { display: block; max-width: 100%; }
button svg, a svg { flex-shrink: 0; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.3; }
::selection { background: var(--lime); color: var(--ink); }
:focus-visible { outline: 3px solid #548c8b; outline-offset: 5px; }
[hidden] { display: none !important; }
.wrap { width: min(1240px, calc(100% - 88px)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 30; min-height: 84px; background: rgba(245, 243, 233, .94); border-bottom: 1px solid var(--line); backdrop-filter: blur(15px); }
.site-header > .wrap { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 19px; line-height: 1.2; font-weight: 650; letter-spacing: -.4px; flex-shrink: 0; }
.brand-mark { display: grid; width: 35px; height: 35px; place-items: center; border-radius: 10px; color: var(--lime); background: var(--ink); }
.brand-mark svg { width: 23px; height: 23px; }
.brand small, .brand-subtitle { display: block; font-size: 10px; font-weight: 500; letter-spacing: 2px; color: var(--muted); margin-top: 4px; }
.nav { display: flex; align-items: center; gap: 29px; }
.nav-link { color: #596961; font-size: 13px; text-decoration: none; transition: color .15s; }
.nav-link:hover { color: var(--ink); }
.nav-cta { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; background: var(--ink); color: var(--paper-bright); border-radius: 6px; padding: 9px 16px; font-size: 13px; }
.nav-cta:hover { background: var(--teal); }

.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 45px; align-items: center; min-height: 615px; padding-block: 66px 67px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 9px; color: var(--teal); font-size: 11px; font-weight: 650; letter-spacing: 2px; margin-bottom: 23px; }
.eyebrow::before { content: ""; width: 20px; height: 1px; background: var(--teal); }
.hero-title { max-width: 580px; margin-bottom: 26px; font-size: clamp(38px, 4.35vw, 59px); font-weight: 570; letter-spacing: -2.6px; line-height: 1.23; }
.hero-title em { font-style: normal; color: var(--teal); }
.hero-title span { color: var(--teal); }
.hero-subtitle { max-width: 450px; color: var(--muted); font-size: 16px; line-height: 1.95; margin-bottom: 29px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; min-height: 46px; padding: 11px 20px; border-radius: 7px; text-decoration: none; font-size: 13px; line-height: 1.45; font-weight: 600; transition: background .17s, border-color .17s, transform .17s; }
.button:hover:not(:disabled) { transform: translateY(-2px); }
.button.primary { background: var(--ink); color: var(--paper-bright); }
.button.primary:hover { background: var(--teal); }
.button.secondary { background: transparent; border-color: #b7c3b6; color: var(--ink); }
.button.secondary:hover { background: #e8eddf; border-color: #99afa0; }
.button.ghost { background: transparent; color: inherit; border-color: currentColor; }
.button svg { width: 17px; height: 17px; }
.hero-footnote { color: #788078; margin: 20px 0 0; font-size: 11px; line-height: 1.8; }
.hero-visual { position: relative; padding: 24px 0 10px; }
.desk-scene { width: 100%; height: auto; overflow: visible; }
.visual-label { display: inline-flex; align-items: center; gap: 8px; font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: #778479; margin-top: 17px; }
.visual-label::before { content: ""; display: block; width: 6px; height: 6px; background: #7b9580; border-radius: 50%; }
.floating-note { position: absolute; right: -6px; bottom: 59px; display: flex; align-items: center; gap: 10px; padding: 11px 15px; border: 1px solid #d3dbca; border-radius: 10px; background: var(--paper-bright); box-shadow: 0 7px 25px #1533390b; font-size: 12px; }
.floating-note strong { color: var(--teal); font-weight: 600; }
.floating-note svg { color: var(--teal); width: 20px; height: 20px; }

.section { padding-block: 86px; }
.section.light { background: #eeefe4; border-block: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 32px; }
.section-head > div { min-width: 0; }
.section-kicker { margin-bottom: 12px; }
.section-title { font-size: clamp(27px, 3vw, 39px); font-weight: 570; letter-spacing: -1.1px; margin-bottom: 0; }
.section-desc { max-width: 415px; color: var(--muted); font-size: 13px; line-height: 1.85; margin: 0; }
#workspace { padding-top: 4px; }
.workspace-shell { --profile-color: #d6e889; border: 1px solid #193d46; border-radius: 20px; padding: 26px 30px 0; overflow: hidden; color: #eef3e9; background: var(--navy); box-shadow: 0 24px 55px #0f303314; }
.workspace-shell :focus-visible { outline-color: var(--lime); }
.workspace-topline { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; font-size: 11px; color: #9ab1b3; letter-spacing: 1px; }
.workspace-topline > span, .workspace-topline > div { display: inline-flex; align-items: center; gap: 8px; }
.workspace-topline strong { color: #e3ede4; font-size: 12px; font-weight: 550; }
.live-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 4px #d6e8890c; }
.mode-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid #31505a; margin-bottom: 29px; }
.mode-tab { display: flex; align-items: center; justify-content: center; gap: 10px; color: #94aeb1; background: transparent; border: 0; border-bottom: 2px solid transparent; padding: 15px 10px 19px; margin-bottom: -1px; font-size: 13px; transition: color .16s, background .16s; }
.mode-tab:hover { color: #ecf3e9; background: #ffffff04; }
.mode-tab[aria-selected="true"] { color: var(--profile-color); border-bottom-color: var(--profile-color); }
.mode-icon { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; font-size: 17px; line-height: 1; }
.mode-icon svg { width: 19px; height: 19px; }
.mode-name { white-space: nowrap; }
.workspace-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 35px; padding-bottom: 29px; }
.work-pane { min-width: 0; }
.pane-heading { display: flex; align-items: center; justify-content: space-between; gap: 13px; margin-bottom: 18px; }
.pane-heading h3, h3.pane-heading { font-size: 14px; font-weight: 550; margin: 0; }
.pane-heading > span { font-size: 12px; }
.status-pill { display: inline-flex; gap: 6px; align-items: center; padding: 4px 9px; border-radius: 4px; border: 1px solid #597265; color: var(--profile-color); font-size: 10px; line-height: 1.35; letter-spacing: .3px; background: #d6e88907; white-space: nowrap; }
.status-pill[data-state="warning"], .status-pill.warning { color: #efba88; border-color: #846544; }
.status-pill[data-state="saved"], .status-pill.saved { color: var(--lime); border-color: #697955; }
.status-pill[data-state="offline"], .status-pill.offline { color: #c7b2a5; border-color: #74605b; }
.editor-label { display: block; color: #90a8a9; font-size: 11px; margin-bottom: 9px; }
textarea#draft { display: block; width: 100%; min-height: 163px; max-height: 370px; resize: vertical; color: #e0e9e1; background: #0c252e; border: 1px solid #35525a; border-radius: 8px; padding: 17px 18px; font-size: 13px; line-height: 1.8; caret-color: var(--lime); }
textarea#draft::placeholder { color: #7a9699; opacity: 1; }
textarea#draft:focus { border-color: #a8bf7d; outline: 0; box-shadow: 0 0 0 3px #d6e88912; }
.editor-meta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; color: #8ea6a7; font-size: 10px; padding-block: 9px; }
.editor-meta strong { color: #cbdacf; font-weight: 500; }
.editor-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin-top: 4px; }
.workspace-shell .button { min-height: 37px; padding: 8px 13px; font-size: 11px; border-radius: 5px; }
.workspace-shell .button.primary { color: var(--navy-deep); background: var(--profile-color); }
.workspace-shell .button.primary:hover { background: #e9f2bf; }
.workspace-shell .button.secondary { color: #d7e6db; border-color: #56716e; }
.workspace-shell .button.secondary:hover { background: #25464a; border-color: #849e80; }
.workspace-shell .button.ghost { color: #9fb4af; border-color: transparent; }
.workspace-shell .button.ghost:hover { color: #e0e9da; background: #ffffff06; }
.task-block { padding-top: 23px; margin-top: 22px; border-top: 1px solid #2d4a52; }
.task-topline { display: flex; align-items: center; justify-content: space-between; gap: 15px; font-size: 12px; margin-bottom: 12px; }
.task-topline strong { font-weight: 500; }
.task-topline span { color: var(--profile-color); font-variant-numeric: tabular-nums; font-size: 11px; }
.progress-track { height: 5px; background: #304952; overflow: hidden; border-radius: 3px; }
.progress-fill { width: 0; height: 100%; background: var(--profile-color); border-radius: inherit; transition: width .35s; }
.task-note { color: #8fa9a9; font-size: 11px; line-height: 1.7; margin: 10px 0 0; }
.power-pane { min-width: 0; border-left: 1px solid #2e4c54; padding-left: 35px; }
.big-runtime { padding: 5px 0 22px; }
.runtime-value { display: inline-block; font-size: clamp(44px, 5vw, 66px); letter-spacing: -3px; line-height: 1.12; color: var(--profile-color); font-weight: 450; font-variant-numeric: tabular-nums; }
.runtime-unit { font-size: 16px; color: #afc4b9; margin-left: 7px; }
.runtime-caption { color: #92acab; font-size: 11px; margin-top: 7px; }
.energy-row { display: flex; gap: 12px; align-items: center; margin-bottom: 18px; }
.energy-icon { flex-shrink: 0; width: 30px; height: 30px; color: #bbcdae; background: #243e44; border: 1px solid #3c5d5e; border-radius: 6px; display: flex; align-items: center; justify-content: center; }
.energy-icon svg { width: 17px; height: 17px; }
.energy-meta { min-width: 0; flex: 1; color: #e0e9e1; font-size: 11px; }
.energy-meta > div, .energy-meta > p { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 7px; }
.energy-meta strong { font-weight: 500; color: #d9e5d5; font-variant-numeric: tabular-nums; }
.energy-meta small { display: block; color: #8ca7a8; font-size: 10px; }
.energy-meter { height: 4px; background: #304c55; border-radius: 2px; overflow: hidden; }
.energy-fill { height: 100%; background: #79a495; border-radius: inherit; transition: width .35s; }
.energy-row:first-of-type .energy-fill { background: var(--profile-color); }
.control-row { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 6px 12px; font-size: 11px; color: #a6bdb7; margin-bottom: 18px; }
.control-row > label { color: #a6bdb7; }
.control-row input[type="range"] { grid-column: 1 / -1; width: 100%; appearance: none; background: transparent; height: 19px; margin: 2px 0 0; accent-color: var(--profile-color); }
.control-row input[type="range"]::-webkit-slider-runnable-track { background: #35545a; border-radius: 2px; height: 4px; }
.control-row input[type="range"]::-webkit-slider-thumb { appearance: none; width: 13px; height: 13px; border-radius: 50%; background: var(--profile-color); border: 2px solid var(--navy); box-shadow: 0 0 0 1px var(--profile-color); margin-top: -4.5px; }
.control-row input[type="range"]::-moz-range-track { background: #35545a; height: 4px; border-radius: 2px; }
.control-row input[type="range"]::-moz-range-thumb { width: 10px; height: 10px; background: var(--profile-color); border: 2px solid var(--navy); border-radius: 50%; }
.control-value { color: #e0ebdb; font-size: 11px; font-variant-numeric: tabular-nums; }
.setting-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 21px; border-top: 1px solid #2e4c54; padding-top: 20px; }
.setting-grid label { display: block; color: #94acab; font-size: 10px; margin-bottom: 7px; }
.setting-grid select, .setting-grid input[type="number"] { width: 100%; min-width: 0; background: #17353d; color: #e1eada; border: 1px solid #3b5b60; padding: 8px 10px; border-radius: 5px; font-size: 11px; }
.setting-grid input[type="checkbox"] { accent-color: var(--profile-color); }
.control-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.sim-notice { color: #86a09f; font-size: 10px; line-height: 1.75; margin: 15px 0 0; }
.event-strip { border-top: 1px solid #31505a; margin-inline: -30px; padding: 18px 30px 22px; background: #0d262f; }
.event-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; color: #afc2b9; font-size: 11px; margin-bottom: 10px; }
.event-heading strong { font-weight: 500; }
.event-heading span { color: #6f9496; font-size: 10px; }
.event-log { list-style: none; margin: 0; padding: 0; max-height: 135px; overflow-y: auto; scrollbar-color: #486662 transparent; scrollbar-width: thin; }
.event-log li { display: grid; grid-template-columns: 56px 58px 1fr; align-items: baseline; gap: 9px; color: #a9bdb7; font-size: 10px; line-height: 1.7; padding-block: 5px; border-bottom: 1px solid #ffffff04; }
.event-time { color: #789c9d; font-family: Consolas, "SFMono-Regular", monospace; font-size: 10px; font-variant-numeric: tabular-nums; }
.event-kind { color: var(--profile-color); font-size: 9px; letter-spacing: .4px; }
.event-text { overflow-wrap: anywhere; }

.comparison-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-bottom: 1px solid var(--line); margin-top: 27px; }
.comparison-card { padding: 18px 25px 22px; border-right: 1px solid var(--line); }
.comparison-card:first-child { padding-left: 0; }
.comparison-card:last-child { border-right: 0; }
.comparison-number { color: var(--teal); font-size: 27px; line-height: 1.4; font-weight: 500; letter-spacing: -.6px; }
.comparison-number small { font-size: 12px; letter-spacing: 0; margin-left: 5px; }
.comparison-caption { color: var(--muted); font-size: 11px; line-height: 1.8; margin-top: 5px; }
.comparison-card p { margin-bottom: 0; }
.mechanism-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 43px; padding-top: 11px; }
.mechanism-step { position: relative; border-top: 1px solid #b7c7b8; padding-top: 22px; }
.step-num { color: #6d8579; font-family: Consolas, monospace; font-size: 12px; letter-spacing: 1px; }
.step-icon { display: flex; align-items: center; justify-content: center; color: var(--teal); width: 46px; height: 46px; background: #e2e9d7; border-radius: 11px; margin-block: 21px 19px; }
.step-icon svg { width: 24px; height: 24px; }
.step-title { font-size: 19px; font-weight: 580; margin-bottom: 13px; letter-spacing: -.35px; }
.step-desc { color: var(--muted); font-size: 13px; line-height: 1.95; margin-bottom: 0; }

.chemistry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; margin-top: 32px; }
.chemistry-copy p { color: var(--muted); font-size: 14px; line-height: 1.95; }
.chemistry-copy strong { color: var(--ink); font-weight: 600; }
.tradeoff-list { list-style: none; margin: 25px 0 0; padding: 0; }
.tradeoff-list li { display: flex; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 12px; color: #596a60; }
.tradeoff-list li::before { content: "+"; color: var(--teal); font-family: Consolas, monospace; font-size: 15px; }
.chemistry-chart { border: 1px solid #ced7c7; border-radius: 14px; padding: 28px 28px 24px; background: #edf0e4; }
.chemistry-chart h3 { margin: 0 0 5px; font-size: 14px; font-weight: 600; }
.chemistry-chart > p { margin: 0 0 25px; color: #7a8675; font-size: 11px; }
.chem-bars { display: grid; gap: 21px; }
.chem-row { display: grid; grid-template-columns: 62px 1fr 68px; align-items: center; gap: 13px; font-size: 12px; }
.chem-row > span:last-child, .chem-row > strong { text-align: right; color: #4d6357; font-size: 12px; font-weight: 500; font-variant-numeric: tabular-nums; }
.chem-track { height: 17px; background: #dce3d4; border-radius: 2px; overflow: hidden; }
.chem-fill { min-height: 17px; height: 100%; background: #91aa8c; border-radius: 2px; }
.chem-row:first-child .chem-fill { background: var(--teal); }
.chem-note { border-top: 1px solid #cfd8c7; margin: 26px 0 0; padding-top: 15px; color: #71816f; font-size: 10px; line-height: 1.8; }

.evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.evidence-card { border: 1px solid var(--line); border-radius: 11px; padding: 23px 24px 21px; background: var(--paper-bright); }
.evidence-number { font-size: 40px; color: var(--teal); font-weight: 450; letter-spacing: -1.9px; line-height: 1.2; margin-bottom: 10px; font-variant-numeric: tabular-nums; }
.evidence-number small { font-size: 13px; letter-spacing: 0; margin-left: 5px; }
.evidence-label { margin: 0 0 10px; font-size: 14px; font-weight: 550; }
.evidence-note { color: var(--muted); font-size: 11px; line-height: 1.85; margin-bottom: 14px; }
.evidence-link { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; color: var(--teal); }
.timeline { margin-top: 38px; border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 100px 1fr auto; align-items: start; gap: 22px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.timeline-date { font-family: Consolas, monospace; font-size: 11px; color: #7e8a7f; padding-top: 2px; }
.timeline-content { min-width: 0; }
.timeline-content h3, .timeline-content strong { font-size: 13px; font-weight: 550; margin: 0 0 4px; }
.timeline-content p { color: var(--muted); font-size: 11px; line-height: 1.8; margin: 0; }
.timeline-status { font-size: 10px; line-height: 1.5; padding: 3px 8px; border: 1px solid #bdcdb5; border-radius: 4px; color: #5d7655; white-space: nowrap; }
.timeline-status.pending { border-color: #d4c6b4; color: #907a5d; }
details { border-top: 1px solid var(--line); margin-top: 29px; }
summary { cursor: pointer; padding-block: 18px; font-size: 12px; color: #57705f; }
summary:hover { color: var(--teal); }
.source-list { margin: 0; padding: 0 0 20px; list-style: none; display: grid; gap: 12px; }
.source-item { font-size: 11px; color: var(--muted); line-height: 1.8; overflow-wrap: anywhere; }
.source-item a { color: var(--teal); }
.source-item strong { font-weight: 550; color: var(--ink); }

.footer { background: #e9ede0; border-top: 1px solid #ced6c7; padding-block: 31px 27px; }
.footer-main { display: flex; align-items: start; justify-content: space-between; gap: 28px; }
.footer .brand { font-size: 15px; }
.footer .brand-mark { width: 28px; height: 28px; border-radius: 8px; }
.footer .brand-mark svg { width: 18px; height: 18px; }
.footer-note { max-width: 670px; color: #798475; font-size: 10px; line-height: 1.85; margin-top: 14px; margin-bottom: 0; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; color: #62765f; font-size: 11px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.toast { position: fixed; bottom: 27px; left: 50%; z-index: 100; transform: translateX(-50%); width: max-content; max-width: calc(100% - 32px); padding: 13px 22px; background: var(--navy); color: #e6efdb; border: 1px solid #56716b; box-shadow: 0 10px 30px #102a3330; border-radius: 8px; font-size: 12px; line-height: 1.7; }
dialog { color: var(--ink); background: var(--paper-bright); border: 1px solid var(--line); border-radius: 16px; width: min(480px, calc(100% - 40px)); max-height: 80vh; padding: 30px; box-shadow: 0 30px 90px #102a3340; }
dialog::backdrop { background: #0d273b99; backdrop-filter: blur(3px); }
dialog h2 { font-size: 23px; }
dialog p { color: var(--muted); font-size: 13px; }
dialog .button { margin-top: 10px; }

@media (min-width: 1440px) {
  .hero { gap: 65px; min-height: 654px; }
  .hero-title { font-size: 60px; }
}
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .nav { gap: 20px; }
  .hero { gap: 28px; min-height: 565px; }
  .hero-title { font-size: 43px; letter-spacing: -1.9px; }
  .hero-subtitle { font-size: 14px; }
  .floating-note { right: -9px; bottom: 38px; font-size: 10px; }
  .workspace-grid { gap: 25px; }
  .power-pane { padding-left: 25px; }
  .chemistry-grid { gap: 42px; }
  .section { padding-block: 70px; }
}
@media (max-width: 850px) {
  .wrap { width: calc(100% - 48px); }
  .site-header, .site-header > .wrap { min-height: 72px; }
  .nav-link { display: none; }
  .nav-cta { padding: 8px 12px; font-size: 11px; }
  .hero { grid-template-columns: 1.08fr .92fr; min-height: 500px; gap: 15px; padding-block: 50px; }
  .hero-title { font-size: 35px; letter-spacing: -1.3px; }
  .hero-subtitle { font-size: 13px; }
  .eyebrow { font-size: 9px; letter-spacing: 1px; }
  .hero-actions .button { padding: 10px 13px; font-size: 11px; }
  .hero-footnote { font-size: 9px; }
  .floating-note { padding: 8px 10px; bottom: 30px; max-width: 90%; }
  .floating-note svg { width: 16px; height: 16px; }
  .visual-label { font-size: 8px; letter-spacing: .8px; }
  .section-head { gap: 25px; }
  .section-desc { max-width: 340px; font-size: 12px; }
  .section-title { font-size: 29px; }
  .workspace-shell { padding: 23px 24px 0; }
  .workspace-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .power-pane { padding-left: 22px; }
  .event-strip { margin-inline: -24px; padding-inline: 24px; }
  .mode-tab { gap: 7px; font-size: 11px; }
  .runtime-value { font-size: 48px; }
  .mechanism-grid { gap: 27px; }
  .step-title { font-size: 17px; }
  .step-desc { font-size: 12px; }
  .chemistry-grid { grid-template-columns: 1fr; gap: 25px; }
  .chemistry-chart { max-width: none; }
  .evidence-grid { gap: 12px; }
  .evidence-card { padding: 20px 17px; }
  .evidence-number { font-size: 33px; }
  .evidence-label { font-size: 12px; }
  .footer-main { flex-wrap: wrap; }
}
@media (max-width: 620px) {
  html { scroll-padding-top: 77px; }
  .wrap { width: calc(100% - 36px); }
  .site-header, .site-header > .wrap { min-height: 67px; }
  .brand { font-size: 17px; gap: 8px; }
  .brand-mark { width: 31px; height: 31px; border-radius: 8px; }
  .brand small, .brand-subtitle { font-size: 8px; letter-spacing: 1.4px; }
  .nav { gap: 0; }
  .nav-cta { padding: 8px 10px; }
  .hero { grid-template-columns: 1fr; gap: 5px; padding-block: 39px 35px; min-height: auto; }
  .eyebrow { margin-bottom: 20px; font-size: 9px; letter-spacing: 1.1px; }
  .hero-title { font-size: clamp(34px, 9.3vw, 45px); letter-spacing: -1.7px; margin-bottom: 20px; }
  .hero-subtitle { max-width: 420px; font-size: 13px; margin-bottom: 22px; line-height: 1.9; }
  .hero-actions .button { padding: 11px 16px; font-size: 12px; }
  .hero-footnote { font-size: 10px; margin-top: 15px; }
  .hero-visual { max-width: 475px; margin-inline: auto; padding-top: 14px; width: 100%; }
  .visual-label { font-size: 9px; margin-top: 8px; }
  .floating-note { right: 4px; bottom: 39px; font-size: 10px; }
  .section { padding-block: 49px; }
  #workspace { padding-top: 13px; }
  .section-head { display: block; margin-bottom: 24px; }
  .section-kicker { font-size: 10px; letter-spacing: 1.5px; margin-bottom: 10px; }
  .section-title { font-size: 27px; letter-spacing: -.8px; }
  .section-desc { max-width: none; margin-top: 13px; font-size: 12px; }
  .workspace-shell { border-radius: 13px; padding: 19px 17px 0; }
  .workspace-topline { margin-bottom: 12px; font-size: 9px; letter-spacing: .4px; gap: 9px; }
  .workspace-topline strong { font-size: 10px; }
  .mode-tabs { margin-bottom: 23px; }
  .mode-tab { flex-direction: column; gap: 5px; padding: 14px 3px 13px; font-size: 10px; }
  .mode-icon { width: 17px; height: 17px; }
  .mode-icon svg { width: 17px; height: 17px; }
  .workspace-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 23px; }
  .power-pane { border-left: 0; border-top: 1px solid #31505a; padding-left: 0; padding-top: 24px; }
  .pane-heading { margin-bottom: 15px; }
  .pane-heading h3, h3.pane-heading { font-size: 13px; }
  textarea#draft { min-height: 150px; font-size: 12px; padding: 13px 14px; }
  .editor-meta { font-size: 9px; }
  .task-block { margin-top: 19px; padding-top: 18px; }
  .big-runtime { padding-bottom: 21px; }
  .runtime-value { font-size: 58px; }
  .energy-row { margin-bottom: 15px; }
  .setting-grid { margin-top: 18px; }
  .event-strip { margin-inline: -17px; padding: 17px; }
  .event-log li { grid-template-columns: 49px 45px 1fr; gap: 6px; font-size: 9px; }
  .event-time { font-size: 9px; }
  .event-kind { font-size: 8px; }
  .comparison-card { padding: 14px 10px 18px; }
  .comparison-number { font-size: 21px; }
  .comparison-number small { display: block; font-size: 10px; margin-left: 0; }
  .comparison-caption { font-size: 10px; }
  .mechanism-grid { grid-template-columns: 1fr; gap: 24px; }
  .mechanism-step { padding-top: 17px; display: grid; grid-template-columns: 48px 1fr; column-gap: 15px; }
  .step-num { grid-column: 1; font-size: 11px; }
  .step-icon { grid-column: 1; grid-row: 2 / 4; margin: 10px 0 0; width: 43px; height: 43px; }
  .step-title { grid-column: 2; grid-row: 2; margin-bottom: 9px; font-size: 18px; }
  .step-desc { grid-column: 2; grid-row: 3; font-size: 12px; }
  .chemistry-grid { margin-top: 22px; gap: 24px; }
  .chemistry-copy p { font-size: 13px; }
  .tradeoff-list { margin-top: 18px; }
  .tradeoff-list li { font-size: 11px; }
  .chemistry-chart { padding: 21px 18px; border-radius: 10px; }
  .chem-row { grid-template-columns: 52px 1fr 61px; gap: 9px; font-size: 11px; }
  .chem-row > span:last-child, .chem-row > strong { font-size: 11px; }
  .evidence-grid { grid-template-columns: 1fr; gap: 13px; }
  .evidence-card { display: grid; grid-template-columns: 95px 1fr; gap: 0 16px; padding: 20px; }
  .evidence-number { grid-column: 1; grid-row: 1 / 4; font-size: 34px; padding-top: 2px; margin-bottom: 0; }
  .evidence-label, .evidence-note, .evidence-link { grid-column: 2; }
  .evidence-label { font-size: 13px; }
  .evidence-note { margin-bottom: 11px; }
  .timeline { margin-top: 25px; }
  .timeline-item { grid-template-columns: 62px 1fr; gap: 6px 14px; padding-block: 17px; }
  .timeline-date { font-size: 10px; }
  .timeline-content h3, .timeline-content strong { font-size: 12px; }
  .timeline-content p { font-size: 10px; }
  .timeline-status { grid-column: 2; justify-self: start; font-size: 9px; margin-top: 3px; }
  .footer { padding-block: 25px; }
  .footer-main { gap: 19px; }
  .footer-links { gap: 15px; font-size: 10px; }
  .footer-note { font-size: 9px; }
  .toast { bottom: 18px; font-size: 11px; padding: 11px 15px; }
}
@media (max-width: 370px) {
  .wrap { width: calc(100% - 28px); }
  .brand small, .brand-subtitle { display: none; }
  .hero-title { font-size: 32px; }
  .workspace-shell { padding-inline: 13px; }
  .event-strip { margin-inline: -13px; padding-inline: 13px; }
  .evidence-card { grid-template-columns: 80px 1fr; gap: 0 12px; padding: 17px; }
  .evidence-number { font-size: 30px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .button:hover:not(:disabled) { transform: none; }
}
@media print {
  body { background: #fff; font-size: 11px; }
  .site-header { position: static; min-height: 50px; }
  .site-header > .wrap { min-height: 50px; }
  .nav, .hero-actions, .editor-actions, .control-buttons, .toast { display: none !important; }
  .wrap { width: 100%; }
  .hero { min-height: auto; padding-block: 22px; }
  .hero-title { font-size: 31px; }
  .section { padding-block: 25px; }
  .section-head { margin-bottom: 17px; }
  .section-title { font-size: 23px; }
  .workspace-shell, .evidence-card, .chemistry-chart { break-inside: avoid; box-shadow: none; }
  .workspace-shell { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .footer { padding-block: 15px; }
  details { display: block; }
}

/* Structure-specific treatments for the finished presentation. */
.site-header.wrap { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.nav-cta { border: 0; cursor: pointer; }
.brand-mark { position: relative; display: flex; align-items: center; justify-content: center; font-family: Georgia, serif; font-style: italic; font-size: 27px; line-height: 1; padding-bottom: 2px; }
.brand-mark > span { position: absolute; right: 5px; top: 4px; font-size: 19px; font-style: normal; }
.eyebrow::before { display: none; }
.eyebrow .live-dot { background: var(--teal); box-shadow: none; }
.hero-subtitle { margin-bottom: 15px; font-size: 18px; color: #435b50; }
.hero-intro { max-width: 443px; margin-bottom: 28px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.hero-footnote { display: flex; flex-wrap: wrap; gap: 7px 17px; }
.hero-footnote span + span { color: #8c9487; }
.visual-label { display: flex; justify-content: space-between; margin-top: 0; margin-bottom: 9px; }
.visual-label::before { display: none; }
.floating-note small { display: block; color: #89937f; font-size: 9px; line-height: 1.7; margin-top: 2px; }
.floating-note > span:last-child { color: #6f8270; margin-left: 9px; }
.prototype-tag { border: 1px solid #3a5960; border-radius: 4px; padding: 3px 8px; letter-spacing: .3px; }
.mode-name { display: block; text-align: left; line-height: 1.45; }
.mode-name small { display: block; font-size: 9px; line-height: 1.4; margin-top: 4px; color: #718f91; font-weight: 400; }
.mode-tab[aria-selected="true"] .mode-name small { color: #a6b99a; }
.work-pane .pane-heading h3 { font-size: 21px; font-weight: 550; letter-spacing: -.5px; }
.work-pane .pane-heading .editor-label { margin: 0 0 5px; font-size: 10px; }
.check-label { display: inline-flex; align-items: center; gap: 5px; color: #a7bab0; cursor: pointer; white-space: nowrap; }
.check-label input { width: 12px; height: 12px; margin: 0; accent-color: var(--profile-color); }
.power-pane > .runtime-caption:first-child { display: flex; align-items: center; justify-content: space-between; gap: 9px; margin-top: 0; }
.big-runtime { padding-top: 13px; padding-bottom: 0; }
.big-runtime + .runtime-caption { margin-top: 4px; margin-bottom: 22px; }
.energy-meta { display: grid; grid-template-columns: 1fr auto; gap: 6px 8px; }
.energy-meta > span { display: block; }
.energy-meta strong { align-self: center; }
.energy-meta .energy-meter { grid-column: 1 / -1; display: block; margin: 0; }
.energy-meta small { display: inline; margin-left: 6px; font-size: 9px; }
.assumptions { margin-top: 13px; border-color: #2e4c54; }
.assumptions summary { color: #98b0a9; font-size: 10px; padding-block: 11px; }
.assumptions summary > span { float: right; font-size: 15px; line-height: 1.2; }
.assumptions summary:hover { color: #d8e8cf; }
.assumptions[open] summary { padding-bottom: 0; }
.assumptions .setting-grid { margin-top: 7px; padding-top: 12px; border-top: 0; gap: 15px; }
.assumptions .setting-grid label { margin: 0; font-size: 10px; }
.assumptions output { float: right; color: #cfdec7; font-size: 10px; }
.assumptions input[type="range"] { display: block; width: 100%; margin: 9px 0 0; height: 17px; accent-color: var(--profile-color); }
.assumptions p { color: #7c9b9c; font-size: 9px; line-height: 1.8; margin-block: 10px 0; }
.workspace-shell > .sim-notice { padding: 0 0 18px; margin-top: 11px; }
.comparison-card > .comparison-caption, .comparison-card > .comparison-number { display: block; }
.comparison-card > .comparison-number { margin-top: 7px; }
.comparison-card > p { font-size: 11px; color: var(--muted); line-height: 1.8; margin-top: 7px; }
.comparison-explain h3 { font-size: 17px; line-height: 1.55; font-weight: 550; margin-block: 10px; letter-spacing: -.3px; }
.text-button { display: inline-flex; align-items: center; gap: 8px; background: transparent; border: 0; padding: 0; color: var(--teal); font-size: 11px; line-height: 1.8; text-decoration: none; font-weight: 500; cursor: pointer; }
.text-button:hover { text-decoration: underline; text-underline-offset: 4px; }
.section-note { border-top: 1px solid #ccd5c3; margin: 32px 0 0; padding-top: 18px; font-size: 11px; line-height: 1.8; color: #84917b; }
.step-icon { font-size: 27px; font-weight: 450; line-height: 1; }
.chemistry-copy .large-copy { font-size: 30px; line-height: 1.5; letter-spacing: -.8px; color: var(--ink); font-weight: 500; margin-bottom: 20px; }
.tradeoff-list strong { flex-shrink: 0; width: 84px; font-size: 12px; color: #365a46; font-weight: 550; }
.tradeoff-list span { flex: 1; }
.chart-topline { display: flex; justify-content: space-between; align-items: center; gap: 13px; margin-bottom: 30px; font-size: 10px; line-height: 1.6; letter-spacing: .4px; color: #72836c; }
.chart-topline span:last-child { font-size: 9px; color: #84967c; }
.chem-fill.sodium { background: #9eb486; }
.chem-verdict { margin-top: 20px; padding-top: 20px; border-top: 1px solid #cfd8c7; }
.chem-verdict > span { color: #7a8a70; font-size: 10px; letter-spacing: 1px; }
.chem-verdict h3 { font-size: 24px; line-height: 1.5; font-weight: 500; letter-spacing: -.5px; margin: 9px 0 14px; color: var(--teal); }
.evidence-number { display: block; margin-top: 16px; margin-bottom: 16px; }
.evidence-number > span { font-size: 13px; letter-spacing: 0; margin-left: 5px; color: #769079; }
.evidence-card > h3 { font-size: 14px; font-weight: 550; line-height: 1.55; margin-bottom: 10px; }
.next-card { background: #e7eedc; border-color: #c9d5bb; }
.next-card > h3 { font-size: 25px; letter-spacing: -.6px; line-height: 1.4; margin-block: 23px 16px; }
.next-card ul { list-style: none; padding: 0; margin: 0 0 20px; }
.next-card li { position: relative; padding: 5px 0 5px 13px; font-size: 11px; color: #6e7d61; line-height: 1.75; }
.next-card li::before { content: "·"; position: absolute; left: 0; top: 3px; font-size: 18px; color: #84a16e; }
.sources-details summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.sources-details summary > span { font-size: 10px; color: #8a977f; }
.sources-details .source-list { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 35px; padding-block: 9px 26px; }
.source-item p { font-size: 10px; margin: 7px 0 0; color: #7b8874; }
.source-item a { font-size: 11px; }
.boundary-list { border-top: 1px solid #ccd5c3; padding-top: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 35px; }
.boundary-list p { margin: 0; font-size: 10px; line-height: 1.85; color: #7a8870; }
.boundary-list strong { color: #566d4c; font-weight: 550; }
.footer.wrap { background: transparent; }
.footer-main > p { margin: 0; font-size: 12px; color: #5d725b; line-height: 1.8; }
.footer-main > p span { font-size: 10px; color: #8b9583; }
.footer-note { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 7px 20px; max-width: none; border-top: 1px solid var(--line); margin-top: 25px; padding-top: 16px; }
.skip-link { position: fixed; z-index: 150; left: 20px; top: 12px; padding: 11px 16px; border-radius: 5px; color: var(--navy); background: var(--lime); font-size: 12px; text-decoration: none; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.roadshow-dialog { width: min(1080px, calc(100vw - 48px)); height: min(760px, calc(100dvh - 48px)); max-width: calc(100vw - 48px); max-height: calc(100dvh - 48px); padding: 31px 52px 30px; background: var(--paper); border-color: #b9c7ae; border-radius: 18px; overflow: hidden; }
.roadshow-dialog[open] { display: flex; flex-direction: column; }
.roadshow-dialog::backdrop { background: #081b22d9; backdrop-filter: blur(6px); }
.roadshow-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-shrink: 0; padding-bottom: 22px; border-bottom: 1px solid var(--line); color: #6e7f6a; font-size: 12px; letter-spacing: .8px; }
.roadshow-top .text-button { font-size: 12px; }
.roadshow-slide { flex: 1; min-height: 0; overflow-y: auto; padding-block: 45px 33px; scrollbar-width: thin; scrollbar-color: #a6b59a transparent; }
.roadshow-slide .section-kicker { font-size: 12px; letter-spacing: 2px; margin-bottom: 28px; }
#slide-title { font-size: clamp(35px, 4.5vw, 61px); font-weight: 520; letter-spacing: -2px; line-height: 1.3; margin: 0 0 31px; }
.roadshow-slide .slide-body { max-width: 850px; color: #536c57; font-size: 21px; line-height: 1.95; margin: 0 0 29px; }
.roadshow-slide .slide-note { max-width: 800px; border-left: 2px solid #b3c29a; padding-left: 16px; font-size: 12px; line-height: 1.9; color: #8a957d; margin: 0; }
.roadshow-slide .button { margin-top: 24px; }
.roadshow-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid var(--line); flex-shrink: 0; }
.roadshow-bottom > span { color: #7a8e6d; font-size: 13px; font-family: Consolas, monospace; letter-spacing: 1px; }
.roadshow-bottom > div { display: flex; gap: 10px; }
.roadshow-bottom .button { margin-top: 0; font-size: 12px; min-height: 43px; }

@media (max-width: 850px) {
  .hero-subtitle { font-size: 15px; }
  .hero-intro { font-size: 12px; }
  .comparison-explain h3 { font-size: 15px; }
  .work-pane .pane-heading h3 { font-size: 18px; }
  .mode-name small { font-size: 8px; }
  .tradeoff-list strong { width: 75px; }
  .next-card > h3 { font-size: 22px; }
  .roadshow-dialog { padding: 26px 34px; }
  .roadshow-slide { padding-top: 37px; }
  .roadshow-slide .slide-body { font-size: 18px; }
}
@media (max-width: 620px) {
  .site-header.wrap { gap: 12px; }
  .hero-subtitle { font-size: 16px; }
  .hero-intro { font-size: 12px; margin-bottom: 22px; }
  .hero-footnote { gap: 3px 15px; }
  .floating-note small { font-size: 8px; }
  .mode-name { text-align: center; }
  .mode-name small { font-size: 7px; margin-top: 4px; }
  .mode-tab { gap: 7px; padding-bottom: 15px; }
  .work-pane .pane-heading h3 { font-size: 20px; }
  .energy-meta small { font-size: 9px; }
  .comparison-number { font-size: 24px; }
  .comparison-explain h3 { font-size: 12px; margin-block: 7px; }
  .comparison-card > p { font-size: 9px; }
  .comparison-explain .text-button { font-size: 9px; line-height: 1.7; text-align: left; }
  .section-note { font-size: 10px; margin-top: 25px; padding-top: 15px; }
  .chemistry-copy .large-copy { font-size: 26px; margin-bottom: 18px; }
  .tradeoff-list strong { width: 71px; font-size: 11px; }
  .chart-topline { margin-bottom: 22px; font-size: 9px; }
  .chem-verdict h3 { font-size: 22px; }
  .evidence-number { margin-top: 0; margin-bottom: 0; }
  .evidence-card > h3 { grid-column: 2; font-size: 12px; margin-bottom: 9px; }
  .evidence-number > span { font-size: 11px; }
  .next-card { display: block; }
  .next-card > h3 { font-size: 23px; margin-block: 15px; }
  .sources-details .source-list, .boundary-list { grid-template-columns: 1fr; gap: 17px; }
  .sources-details summary { font-size: 11px; }
  .footer-main > p { width: 100%; font-size: 11px; }
  .footer-note { margin-top: 20px; padding-top: 14px; }
  .roadshow-dialog { width: calc(100vw - 24px); max-width: calc(100vw - 24px); height: calc(100dvh - 24px); max-height: calc(100dvh - 24px); border-radius: 12px; padding: 20px 22px; }
  .roadshow-top { font-size: 10px; padding-bottom: 18px; }
  .roadshow-top .text-button { font-size: 11px; }
  .roadshow-slide { padding-block: 30px 25px; }
  .roadshow-slide .section-kicker { font-size: 10px; margin-bottom: 25px; }
  #slide-title { font-size: clamp(29px, 8.2vw, 43px); line-height: 1.4; letter-spacing: -1px; margin-bottom: 27px; }
  .roadshow-slide .slide-body { font-size: 16px; line-height: 1.95; margin-bottom: 25px; }
  .roadshow-slide .slide-note { font-size: 10px; padding-left: 12px; }
  .roadshow-bottom { gap: 10px; padding-top: 17px; }
  .roadshow-bottom > span { font-size: 10px; letter-spacing: .5px; }
  .roadshow-bottom > div { gap: 7px; }
  .roadshow-bottom .button { min-height: 38px; padding: 9px 11px; font-size: 10px; }
}
@media (max-width: 370px) {
  .mode-name small { font-size: 6px; }
  .roadshow-dialog { padding-inline: 17px; }
  .roadshow-bottom .button { padding-inline: 9px; }
}
@media print {
  .hero-intro { font-size: 10px; }
  .roadshow-dialog, .skip-link { display: none !important; }
  .sources-details .source-list, .boundary-list { grid-template-columns: 1fr 1fr; }
}