/* FundLab UI refresh 2026-09-10 */
:root {
    --paper: #fff; --paper-card: #fff; --ink: #25333b; --ink-deep: #1e2c34;
    --text: #354750; --text-muted: #566570; --line: #dbe2e7;
    --line-strong: #adbbc4; --accent: #246b63; --accent-dark: #18574f;
    --accent-soft: #edf4f3; --green: #246b63; --terra: #246b63;
    --vermilion: #246b63; --gold: #956531; --danger: #a33f36;
    --font-serif: "Yu Gothic UI", Meiryo, sans-serif;
    --font-sans: "Yu Gothic UI", Meiryo, sans-serif;
    --font-label: "Yu Gothic UI", Meiryo, sans-serif;
    --radius: 5px; --shadow-card: none;
    --shadow-hover: 0 5px 16px rgba(37,51,59,.08);
}
html { color-scheme: light; }
[hidden] { display: none !important; }
body, body.page-home {
    background: #fff !important; color: var(--text) !important;
    font-family: var(--font-sans) !important; font-size: 16px; line-height: 1.8;
}
h1, h2, h3, h4, h5, h6, .page-home .hero h1,
.page-home .tools-heading h2, .article-header h1, .content h2, .content h3 {
    color: var(--ink) !important; font-family: var(--font-sans) !important;
    font-style: normal; letter-spacing: 0 !important;
}
a { color: var(--accent); text-underline-offset: .18em; }
a:hover { color: var(--accent-dark); }
:focus-visible { outline: 3px solid rgba(36,107,99,.34) !important; outline-offset: 3px; }
.bg-shapes, .grid-pattern, .page-home .bg-shapes, .page-home .grid-pattern,
.hero-badge, .eyebrow, .card-tag { display: none !important; }
header, .header, .page-home header {
    background: rgba(255,255,255,.98) !important; border-bottom: 1px solid var(--line) !important;
    box-shadow: none !important; color: var(--ink) !important;
}
header .logo, .header .logo, .page-home .logo {
    color: var(--ink) !important; font-family: Arial,sans-serif !important;
    font-size: 1.55rem !important; font-weight: 700 !important;
    letter-spacing: -.045em !important; text-transform: none !important;
}
.logo .fund, .logo .lab { color: var(--ink) !important; }
.page-home .logo .lab::after { content: none !important; }
header nav a, .header .header-nav a, .page-home nav a {
    color: var(--ink) !important; font-family: var(--font-sans) !important;
    font-size: .875rem !important; font-weight: 500 !important;
    letter-spacing: 0 !important; text-transform: none !important;
}
header nav a:hover, .header .header-nav a:hover, .page-home nav a:hover { color: var(--accent) !important; }
header nav a::after, .header .header-nav a::after, .page-home nav a::after { background: var(--accent) !important; }
.hamburger span { background: var(--ink) !important; }
.main-container, .container, .wrap, .page-layout, .page-home .hero,
.page-home .tools-heading, .page-home .features, .page-home .articles-section { max-width: 1264px !important; }
button, .btn, input[type="submit"], input[type="button"], .cta-button,
.tool-highlight-cta, .card-cta {
    border-radius: 5px !important; font-family: var(--font-sans) !important;
    letter-spacing: 0 !important; text-transform: none !important;
}
.btn-primary, button[type="submit"], input[type="submit"], .calculate-btn,
.cta-button, .tool-highlight-cta {
    background: var(--accent) !important; border-color: var(--accent) !important; color: #fff !important;
}
.btn-primary:hover, button[type="submit"]:hover, input[type="submit"]:hover,
.calculate-btn:hover, .cta-button:hover, .tool-highlight-cta:hover {
    background: var(--accent-dark) !important; border-color: var(--accent-dark) !important;
}
input, select, textarea, .fss-input-wrap {
    background: #fff !important; border-color: var(--line-strong) !important;
    border-radius: 4px !important; color: var(--ink) !important; font-family: var(--font-sans) !important;
}
input:focus, select:focus, textarea:focus, .fss-wrapper:focus-within .fss-input-wrap {
    border-color: var(--accent) !important; box-shadow: 0 0 0 3px rgba(36,107,99,.13) !important;
}
.panel, .card, .metric-card, .result-card, .article-card, .fund-card,
.release, .search-panel, .tool-card, .feature-card, .tool-highlight, .guide-box {
    border-color: var(--line) !important; border-radius: 5px !important; box-shadow: none !important;
}
.panel:hover, .card:hover, .fund-card:hover, .feature-card:hover { box-shadow: var(--shadow-hover) !important; }
table { border-color: var(--line) !important; font-variant-numeric: tabular-nums; }
th { background: #f5f7f8 !important; color: var(--ink) !important; }
td, th { border-color: var(--line) !important; }
.pos, .positive { color: var(--accent) !important; }
.neg, .negative, .error { color: var(--danger) !important; }
footer, .footer, .page-home footer {
    background: #fff !important; border-top: 1px solid var(--line) !important;
    color: var(--text-muted) !important; box-shadow: none !important;
}
.page-home footer .footer-disclaimer { color: var(--text-muted) !important; opacity: 1 !important; }

/* One shared header: four frequent destinations plus the complete 16-link menu. */
.site-header {
    width: 100%; min-height: 72px; padding: 14px max(24px,calc((100vw - 1264px)/2)) !important;
    box-sizing: border-box;
}
.site-logo { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; }
.brand-mark { display: inline-flex; align-items: flex-end; gap: 3px; width: 20px; height: 24px; }
.brand-mark i { display: block; width: 4px; background: var(--accent); }
.brand-mark i:nth-child(1) { height: 10px; }
.brand-mark i:nth-child(2) { height: 17px; }
.brand-mark i:nth-child(3) { height: 24px; }
.site-primary-links a { color: var(--ink); font-weight: 500; text-decoration: none; }
.site-primary-links a:hover { color: var(--accent); text-decoration: underline; }
.all-tools-toggle { border-radius: 4px !important; font: 500 .875rem var(--font-sans) !important; }
.page-identity { margin: 22px 0 18px; padding: 0 0 17px; border-bottom: 1px solid var(--line); }
.page-identity h1 { margin: 0 0 5px; color: var(--ink) !important; font-size: clamp(1.55rem,2.4vw,2rem); line-height: 1.45; }
.page-identity p { max-width: 920px; margin: 0; color: var(--text-muted); font-size: .9rem; line-height: 1.75; }

/* Home */
.page-home .hero {
    display: grid !important; grid-template-columns: minmax(0,1fr) minmax(430px,.96fr) !important;
    align-items: center !important; gap: 64px !important; padding: 38px 40px 30px !important;
}
.page-home .hero-copy::before { content: none !important; }
.page-home .hero h1 {
    font-size: clamp(2rem,3vw,2.35rem) !important; font-weight: 700 !important;
    line-height: 1.48 !important; margin: 0 0 18px !important; animation: none !important;
}
.page-home .hero h1 span { color: var(--ink) !important; }
.page-home .hero-copy > p {
    color: var(--text) !important; font-size: 1rem !important;
    line-height: 1.95 !important; margin: 0 !important; animation: none !important;
}
.home-primary-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 22px; margin-top: 24px; }
.home-primary-action {
    display: inline-flex; align-items: center; min-height: 46px; padding: 10px 18px;
    border-radius: 5px; background: var(--accent); color: #fff !important;
    font-weight: 700; text-decoration: none;
}
.home-secondary-action { font-weight: 600; }
.home-guide-action { flex-basis: 100%; width: fit-content; font-size: .9rem; }
.hero-backtest {
    min-width: 0; padding: 22px; background: #f7f9fa;
    border: 1px solid var(--line); border-radius: 6px;
}
.hero-backtest > summary { display: none; }
.hero-backtest__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.hero-backtest h2 { margin: 0; font-size: 1.05rem; line-height: 1.55; }
.hero-backtest__status {
    flex: 0 0 auto; padding: 3px 8px; background: #eef1f3; color: var(--text-muted);
    border-radius: 3px; font-size: .73rem;
}
.hero-backtest__funds { display: grid; gap: 8px; margin: 12px 0; }
.hero-backtest__fund { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: baseline; font-size: .82rem; }
.hero-backtest__fund a { color: var(--ink); text-decoration-color: #9db5b1; }
.hero-backtest__fund strong { color: var(--ink); font-size: .95rem; font-variant-numeric: tabular-nums; }
.hero-backtest__bar {
    display: flex; height: 8px; overflow: hidden; margin-bottom: 13px;
    background: #dfe5e8; border-radius: 99px;
}
.hero-backtest__bar span:first-child { background: var(--accent); }
.hero-backtest__bar span:last-child { background: #956531; }
.hero-backtest input[type="range"] {
    width: 100%; min-height: 28px; padding: 0; accent-color: var(--accent); cursor: pointer;
}
.hero-backtest__conditions, .hero-backtest__note, .hero-backtest__chart-note, .hero-backtest__error {
    color: var(--text-muted); font-size: .82rem; line-height: 1.65;
}
.hero-backtest__conditions { margin: 6px 0 8px !important; }
.hero-backtest__disclosure { margin: 6px 0 8px; font-size: .8rem; color: var(--text-muted); }
.hero-backtest__disclosure summary { width: fit-content; color: var(--accent); cursor: pointer; }
.hero-backtest__period { margin: 5px 0 0 !important; font-size: .78rem !important; color: var(--text-muted) !important; }
.hero-backtest__chart-wrap {
    position: relative; min-height: 150px; margin: 12px 0 8px; padding-top: 8px;
    border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.hero-backtest__chart { display: block; width: 100%; height: 140px; }
.hero-backtest__chart .grid { stroke: #dbe2e7; stroke-width: 1; }
.hero-backtest__chart .baseline { stroke: #8fa19f; stroke-width: 1; stroke-dasharray: 3 3; }
.hero-backtest__chart .series { fill: none; stroke: var(--accent); stroke-width: 2.5; vector-effect: non-scaling-stroke; }
.hero-backtest__chart .area { fill: rgba(36,107,99,.08); }
.hero-backtest__chart text { fill: var(--text-muted); font: 11px var(--font-sans); }
.hero-backtest__loading {
    position: absolute; inset: 0; display: grid; place-items: center;
    background: rgba(247,249,250,.82); color: var(--text-muted); font-size: .82rem;
}
.hero-backtest__loading[hidden] { display: none; }
.hero-backtest__metrics { display: grid; grid-template-columns: repeat(3,1fr); margin: 10px 0 8px; border-block: 1px solid var(--line); }
.hero-backtest__metric { padding: 9px 10px 9px 0; }
.hero-backtest__metric + .hero-backtest__metric { padding-left: 10px; border-left: 1px solid var(--line); }
.hero-backtest__metric span { display: block; color: var(--text-muted); font-size: .7rem; }
.hero-backtest__metric strong { display: block; color: var(--ink); font-size: 1rem; font-variant-numeric: tabular-nums; }
.hero-backtest__footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 12px; }
.hero-backtest__detail { font-size: .82rem; font-weight: 700; }
.hero-backtest__retry { min-height: 36px; padding: 6px 12px; border: 1px solid var(--accent); background: #fff; color: var(--accent); }
.hero-backtest__error { margin-top: 10px; color: var(--danger); }
.hero-backtest__always-disclaimer { margin: 8px 0 0; color: var(--text-muted); font-size: .82rem; line-height: 1.65; }
.hero-backtest__fallback { margin: 14px 0 4px; padding: 18px; border: 1px solid var(--line); background: #fff; text-align: center; }
.hero-backtest__fallback a { font-size: .9rem; font-weight: 700; }
.hero-backtest__chart-wrap[hidden], .hero-backtest__metrics[hidden], .hero-backtest__always-disclaimer[hidden],
.hero-backtest__period[hidden], .hero-backtest__footer[hidden], .hero-backtest__fallback[hidden] { display: none !important; }
.home-purpose { max-width: 1184px; margin: 8px auto 0; padding: 0 40px; }
.home-purpose__head { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; margin-bottom: 12px; }
.home-purpose__head h2 { margin: 0; font-size: 1.35rem; }
.home-purpose__grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.home-purpose__card { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; padding: 18px; border: 1px solid var(--line); border-radius: 5px; color: var(--ink); text-decoration: none; }
.home-purpose__card strong { font-size: 1rem; }
.home-purpose__card span { color: var(--text-muted); font-size: .84rem; }
.home-purpose__card b { grid-column: 2; grid-row: 1 / span 2; align-self: center; color: var(--accent); font-size: 1.15rem; }
.home-purpose__card:hover { border-color: var(--accent); box-shadow: var(--shadow-hover); }
.page-home .tools-heading { padding: 28px 40px 0 !important; }
.page-home .tools-heading h2 { border-top: 1px solid var(--line) !important; font-size: 1.4rem !important; }
.page-home .features { gap: 14px !important; padding-inline: 40px !important; }
.page-home .feature-card { min-height: 0 !important; border: 0 !important; border-top: 1px solid var(--line) !important; border-radius: 0 !important; background: #fff !important; overflow: visible; box-shadow: none !important; animation: none !important; opacity: 1 !important; transform: none !important; }
.page-home .feature-card .card-header { display: none !important; }
.page-home .feature-card .card-content { min-height: 0 !important; padding: 18px 0 22px !important; background: #fff !important; }
.page-home .feature-card h3 { font-size: 1rem !important; }
.page-home .feature-card p { color: var(--text-muted) !important; font-size: .85rem !important; }
.page-home .card-cta { color: var(--accent) !important; background: none !important; }
.page-home .tool-highlights { max-width: 1184px !important; margin: 18px auto 0 !important; padding: 0 40px !important; }
.page-home .tool-highlight { padding: 14px 16px !important; border-left: 3px solid var(--accent) !important; display: flex !important; align-items: center; justify-content: space-between; gap: 18px; }
.page-home .tool-highlight-copy > span, .page-home .tool-highlight-copy > p { display: none !important; }
.page-home .tool-highlight-copy h3 { margin: 0 !important; font-size: .95rem !important; }
.page-home .tool-highlight-actions { display: flex !important; align-items: center; gap: 18px; }
.page-home .tool-highlight-cta { padding: 6px 0 !important; min-height: 0 !important; background: transparent !important; color: var(--accent) !important; border: 0 !important; text-decoration: underline !important; }

/* Tools and reading surfaces */
.main-container { padding-inline: 40px !important; }
.input-section, .settings, .form-section { background: #f7f9fa !important; }
.results-section, .results, .result-section { background: #fff !important; }
.metric-value, .result-value { color: var(--ink) !important; font-variant-numeric: tabular-nums; }
.tab-btn.active, .mode-tab.active, [role="tab"][aria-selected="true"] { color: var(--accent) !important; border-color: var(--accent) !important; }
.article-header h1, .fund-head h1 { font-size: clamp(1.55rem,3vw,1.9rem) !important; line-height: 1.65 !important; }
.article-card, main.content { font-size: 1rem; line-height: 2; }
.article-card h2, main.content h2 { border-bottom-color: var(--line) !important; font-size: 1.45rem !important; line-height: 1.75 !important; }
.article-card h3, main.content h3 { font-size: 1.12rem !important; line-height: 1.75 !important; }
.toc, .sidebar { border-color: var(--line) !important; }
.tip, .note, .cta-box { background: var(--accent-soft) !important; border-color: var(--accent) !important; }
.faq-q { color: var(--ink) !important; }
.summary-card, .stat-card, .result-summary, .results-summary, .tool-nav-section, .notice-box {
    background: #fff !important; border-color: var(--line) !important; box-shadow: none !important;
}
.btn-nav, .share-card-btn { background: #fff !important; color: var(--accent) !important; border: 1px solid var(--accent) !important; }
.fss-dropdown, .fss-menu, .fss-options { background: #fff !important; border-color: var(--line-strong) !important; box-shadow: 0 12px 28px rgba(37,51,59,.12) !important; }
.fss-item:hover, .fss-item.fss-active, .fss-item.selected { background: var(--accent-soft) !important; color: var(--ink) !important; }
.fund-draft-return { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 0 0 18px; padding: 11px 14px; border: 1px solid var(--line); border-left: 3px solid var(--accent); background: #fff; font-size: .86rem; }
.fund-draft-return a { font-weight: 700; }
.fund-draft-return span { color: var(--text-muted); font-size: .78rem; }

/* Backtest: settings and output stay visible as one working surface. */
.backtest-layout {
    display: grid; grid-template-columns: 365px minmax(0,1fr); gap: 28px;
    align-items: start; margin-bottom: 24px;
}
.backtest-settings {
    position: sticky; top: 20px; display: flex; flex-direction: column;
    max-height: var(--backtest-settings-height, calc(100vh - 40px)); overflow: hidden;
    background: #f7f9fa !important;
}
.backtest-settings > .card-title { flex: 0 0 auto; }
.backtest-settings #backtest-form { display: flex; flex: 1 1 auto; flex-direction: column; min-height: 0; }
.backtest-settings__body { flex: 1 1 auto; min-height: 0; overflow: auto; padding-right: 6px; scrollbar-gutter: stable; }
.backtest-settings__footer { flex: 0 0 auto; margin-top: 10px; padding-top: 12px; border-top: 1px solid var(--line); background: #f7f9fa; }
.backtest-settings__footer .allocation-warning { margin: 0 0 8px; min-height: 0; }
.backtest-settings__footer .allocation-warning:empty { display: none; }
.backtest-settings__footer [hidden] { display: none !important; }
.backtest-results-pane { min-width: 0; }
.backtest-empty-state {
    min-height: 320px; display: grid; align-content: center; gap: 8px;
    padding: 32px; border: 1px solid var(--line); background: #fff; border-radius: 5px;
}
.backtest-empty-state[hidden] { display: none !important; }
.backtest-empty-state strong { color: var(--ink); font-size: 1.1rem; }
.backtest-empty-state p { max-width: 580px; color: var(--text-muted); }
.backtest-condition-summary {
    position: sticky; top: 0; z-index: 5; display: flex; align-items: center;
    justify-content: space-between; gap: 18px; margin-bottom: 16px; padding: 13px 16px;
    border: 1px solid var(--line); background: rgba(255,255,255,.96); border-radius: 5px;
}
.backtest-condition-summary[hidden] { display: none; }
.backtest-condition-summary strong { color: var(--ink); font-size: .85rem; }
.backtest-condition-summary p { margin: 2px 0 0; color: var(--text-muted); font-size: .75rem; line-height: 1.65; }
.backtest-condition-summary span { display: block; margin-top: 3px; color: var(--danger); font-size: .75rem; }
.backtest-condition-summary button {
    flex: 0 0 auto; min-height: 40px; padding: 7px 12px;
    border: 1px solid var(--accent); background: #fff; color: var(--accent); font-weight: 700;
}
.backtest-settings .asset-grid-bt { grid-template-columns: repeat(2,minmax(0,1fr)) !important; gap: 7px !important; }
.backtest-settings .asset-btn-bt { min-width: 0 !important; min-height: 46px; padding: 8px 10px !important; display: flex !important; align-items: center; justify-content: flex-start; gap: 7px; text-align: left; line-height: 1.35; writing-mode: horizontal-tb !important; word-break: keep-all; }
.backtest-settings .asset-btn-bt > span:first-child { flex: 0 0 auto; }
.backtest-settings .asset-btn-bt > span:last-child { min-width: 0; }
.backtest-settings .form-row { gap: 10px !important; }
.backtest-settings .form-group { min-width: 0; }
.backtest-settings .fund-item {
    grid-template-columns: minmax(0,1fr) auto; gap: 8px 10px; align-items: end;
}
.backtest-settings .fund-item > .fss-wrapper { grid-column: 1 / -1; min-width: 0; }
.backtest-settings .fund-item__allocation {
    display: grid; grid-template-columns: auto minmax(96px,120px); align-items: center; gap: 8px;
    min-width: 0; margin: 0; color: var(--text-muted); font-size: .875rem;
    font-weight: 500; letter-spacing: 0; text-transform: none;
}
.backtest-settings .fund-item__allocation .allocation-input { min-width: 96px; padding-inline: 10px; }
.backtest-settings .fund-item .btn-danger { white-space: nowrap; }
.backtest-results-pane .results-section { padding-top: 0 !important; }
.backtest-results-pane .results-disclaimer { margin-bottom: 14px !important; }
.backtest-results-pane .metrics-grid { gap: 0 !important; border-block: 1px solid var(--line); }
.backtest-results-pane .metric-card { padding: 14px !important; border: 0 !important; border-right: 1px solid var(--line) !important; background: #fff !important; }
.backtest-results-pane .metric-card:last-child { border-right: 0 !important; }
.backtest-results-pane .metric-value { font-size: 1.55rem !important; color: var(--ink) !important; }
.backtest-results-pane .comparison-section,
.backtest-results-pane .comparison-metric { background: #fff !important; border-color: var(--line) !important; }
.backtest-results-pane .comparison-metric { border-left: 3px solid var(--accent) !important; }
.backtest-results-pane .portfolio-allocation-list { background: var(--accent-soft) !important; border-color: #bfd1ce !important; }
.backtest-results-pane .portfolio-allocation-item { border-color: #bfd1ce !important; }
.result-tabs { display: flex; gap: 22px; margin: 18px 0 0; padding: 0 16px; border: 1px solid var(--line); border-bottom: 0; background: #fff; }
.result-tab { min-height: 48px; padding: 9px 0; border: 0 !important; border-bottom: 2px solid transparent !important; background: transparent !important; color: var(--text-muted) !important; font-weight: 600; }
.result-tab[aria-selected="true"] { color: var(--accent) !important; border-bottom-color: var(--accent) !important; }
.result-tab-panel { margin-top: 0 !important; border-top-left-radius: 0 !important; border-top-right-radius: 0 !important; }
.result-tab-panel[hidden] { display: none !important; }
.backtest-results-pane .chart-container { min-height: 340px; }

/* Complete guide: sticky table of contents on desktop, collapsible before content on mobile. */
.guide-layout { display: grid; grid-template-columns: 240px minmax(0,800px); gap: 44px; max-width: 1100px; margin: 0 auto; padding: 26px 24px 56px; align-items: start; }
.guide-layout > .content { max-width: none !important; width: auto !important; margin: 0 !important; padding: 0 !important; }
.guide-layout .article-card { padding: 32px 38px !important; }
.guide-toc { position: sticky; top: 92px; border-top: 1px solid var(--line); }
.guide-toc summary { padding: 12px 0; color: var(--ink); font-weight: 700; cursor: pointer; }
.guide-toc ol { margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.guide-toc li { counter-increment: toc; border-top: 1px solid var(--line); }
.guide-toc a { display: grid; grid-template-columns: 28px 1fr; gap: 6px; padding: 9px 0; color: var(--text-muted); font-size: .78rem; line-height: 1.55; text-decoration: none; }
.guide-toc a::before { content: counter(toc,decimal-leading-zero); color: #7a8991; font-variant-numeric: tabular-nums; }
.guide-toc a:hover { color: var(--accent); }
.guide-page .article-header { max-width: 1100px !important; padding-inline: 24px !important; }
.guide-page .article-header h1 { max-width: 850px; text-wrap: balance; word-break: auto-phrase; }
.guide-page .tool-sidebar, .guide-page .bottom-tool-bar { display: none !important; }

@media (max-width: 850px) {
    .page-home .hero { grid-template-columns: 1fr !important; gap: 26px !important; padding: 28px 24px !important; }
    .page-home .features, .page-home .tools-heading, .main-container { padding-inline: 24px !important; }
    .backtest-layout { grid-template-columns: 1fr; gap: 18px; }
    .backtest-settings { position: static; display: block; max-height: none; overflow: visible; }
    .backtest-settings #backtest-form { display: block; }
    .backtest-settings__body { overflow: visible; padding-right: 0; }
    .backtest-settings.is-collapsed { display: none; }
    .backtest-empty-state { min-height: 180px; }
    .home-purpose { padding-inline: 24px; }
    .home-purpose__grid { grid-template-columns: 1fr; }
    .guide-layout { display: block; padding: 18px 24px 44px; }
    .guide-toc { position: static; margin-bottom: 18px; padding: 0 14px; border: 1px solid var(--line); border-radius: 5px; }
    .guide-toc details:not([open]) ol { display: none; }
    .guide-layout .article-card { padding: 24px !important; }
}
@media (max-width: 620px) {
    body, body.page-home { font-size: 16px; }
    .page-home .hero { padding: 24px 20px !important; }
    .page-home .hero h1 { font-size: clamp(1.55rem,7vw,1.95rem) !important; }
    .page-home .hero-copy > p { font-size: .92rem !important; }
    .site-header { min-height: 64px; padding: 10px 20px !important; }
    .hero-backtest { padding: 0; }
    .hero-backtest > summary {
        display: flex; justify-content: space-between; align-items: center; min-height: 50px;
        padding: 12px 16px; color: var(--accent); font-weight: 700; cursor: pointer; list-style: none;
    }
    .hero-backtest > summary::after { content: "+"; font-size: 1.2rem; }
    .hero-backtest[open] > summary::after { transform: rotate(45deg); }
    .hero-backtest__content { display: none; padding: 0 16px 16px; }
    .hero-backtest[open] .hero-backtest__content { display: block; }
    .hero-backtest__head { display: block; }
    .hero-backtest__status { display: inline-block; margin-top: 6px; }
    .hero-backtest__fund { font-size: .76rem; }
    .hero-backtest__metrics { grid-template-columns: 1fr 1fr; }
    .hero-backtest__metric:nth-child(3) { grid-column: 1/-1; border-top: 1px solid var(--line); border-left: 0; padding-left: 0; }
    .hero-backtest__footer { align-items: flex-start; flex-direction: column; }
    .page-home .features, .page-home .tools-heading, .main-container { padding-inline: 20px !important; }
    .article-card, main.content { font-size: 1rem; }
    input, select, textarea { font-size: 16px !important; }
    .home-purpose { padding-inline: 20px; }
    .home-purpose__head { display: block; }
    .page-home .tool-highlights { padding-inline: 20px !important; }
    .page-home .tool-highlight { align-items: flex-start; flex-direction: column; }
    .page-home .features { display: grid !important; grid-template-columns: 1fr !important; gap: 0 !important; }
    .backtest-settings .asset-grid-bt { grid-template-columns: repeat(2,minmax(0,1fr)) !important; }
    .backtest-results-pane .metrics-grid { grid-template-columns: 1fr 1fr !important; }
    .backtest-results-pane .metric-card:nth-child(2) { border-right: 0 !important; }
    .backtest-results-pane .metric-card:nth-child(-n+2) { border-bottom: 1px solid var(--line) !important; }
    .result-tabs { gap: 14px; overflow-x: auto; padding-inline: 12px; }
    .result-tab { flex: 0 0 auto; font-size: .86rem; }
    .guide-layout { padding-inline: 18px; }
    .guide-layout .article-card { padding: 20px !important; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}