/* =========================================================================
   GreeksGyan — global styles (indigo + gold "quant" identity)
   ========================================================================= */
:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-2: #eef0f7;
  --border: #e2e5f0;
  --text: #14161f;
  --text-soft: #4b5163;
  --text-mute: #868da3;
  --brand: #4f46e5;      /* indigo */
  --brand-soft: #ecebfe;
  --accent: #c9922b;     /* muted gold */
  --bull: #10916d;
  --bear: #d1435b;
  --neutral: #6b74c4;
  --vol: #b5642a;
  --shadow: 0 1px 2px rgba(17,24,39,.04), 0 8px 24px rgba(17,24,39,.06);
  --radius: 14px;
  --maxw: 1120px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}
/* dark palette — applied when the user forces dark, OR when the system is dark
   and the user has NOT forced light. The [data-theme] toggle always wins. */
:root[data-theme="dark"] {
  --bg: #0c0e15; --surface: #14171f; --surface-2: #1b1f2b; --border: #262b3a;
  --text: #eef1f6; --text-soft: #b3bccb; --text-mute: #7b8598;
  --brand: #8b8ef5; --brand-soft: #1a1830; --accent: #e0b055;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0e15; --surface: #14171f; --surface-2: #1b1f2b; --border: #262b3a;
    --text: #eef1f6; --text-soft: #b3bccb; --text-mute: #7b8598;
    --brand: #8b8ef5; --brand-soft: #1a1830; --accent: #e0b055;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}
html { color-scheme: light dark; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); line-height: 1.6; font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- Accessibility ---------- */
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 3px; }
.skip-link { position: absolute; left: 8px; top: -48px; z-index: 200; background: var(--brand); color: #fff;
  padding: 9px 14px; border-radius: 8px; font-weight: 700; transition: top .15s; }
.skip-link:focus { top: 8px; text-decoration: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; gap: 18px;
  height: 62px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.15rem; color: var(--text); letter-spacing: -.02em;
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: grid; place-items: center; color: #fff; font-weight: 900;
  font-size: .95rem;
}
.brand small { color: var(--accent); font-weight: 700; }
.nav-links { display: flex; gap: 4px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.nav-links a {
  color: var(--text-soft); font-weight: 600; font-size: .92rem;
  padding: 8px 12px; border-radius: 8px;
}
.nav-links a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; color: var(--text); font-size: 1.2rem; cursor: pointer; }
.theme-toggle {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px;
  width: 38px; height: 38px; display: grid; place-items: center; cursor: pointer;
  color: var(--text); font-size: 1.05rem; line-height: 1; transition: .15s; flex: none;
}
.theme-toggle:hover { border-color: var(--brand); color: var(--brand); }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .moon { display: none; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; margin-left: auto; }
  .nav-links { display: none; width: 100%; flex-direction: column; align-items: stretch;
    padding: 8px 0 14px; }
  .nav-links.open { display: flex; }
  .nav { flex-wrap: wrap; height: auto; padding: 10px 0; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 500px at 80% -10%, color-mix(in srgb, var(--brand) 22%, transparent), transparent),
    radial-gradient(900px 500px at 0% 120%, color-mix(in srgb, var(--accent) 16%, transparent), transparent);
  border-bottom: 1px solid var(--border);
}
.hero-inner { padding: 74px 0 64px; max-width: 760px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--brand); background: var(--brand-soft);
  padding: 6px 12px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--brand) 25%, transparent);
}
.hero h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.5rem); line-height: 1.08; letter-spacing: -.03em;
  margin: 18px 0 14px; font-weight: 850;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--brand), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 1.18rem; color: var(--text-soft); margin: 0 0 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 30px; margin-top: 38px; flex-wrap: wrap; }
.hero-stats .stat b { display: block; font-size: 1.7rem; font-weight: 800; letter-spacing: -.02em; }
.hero-stats .stat span { color: var(--text-mute); font-size: .86rem; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: .96rem; padding: 12px 20px; border-radius: 10px;
  border: 1px solid transparent; cursor: pointer; transition: transform .08s ease, box-shadow .2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--shadow); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section-head { max-width: 640px; margin-bottom: 30px; }
.section-head h2 { font-size: 1.9rem; letter-spacing: -.02em; margin: 0 0 8px; }
.section-head p { color: var(--text-soft); margin: 0; }

/* ---------- Filters ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.chip {
  font-size: .84rem; font-weight: 600; padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-soft);
  cursor: pointer; transition: .15s;
}
.chip:hover { border-color: var(--brand); color: var(--text); }
.chip.active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- Strategy cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.card {
  display: flex; flex-direction: column; gap: 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); transition: transform .12s ease, border-color .2s;
  position: relative;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); text-decoration: none; }
.card .card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.card h3 { margin: 0; font-size: 1.15rem; letter-spacing: -.01em; color: var(--text); }
.card .legs { font-size: .82rem; color: var(--text-mute); font-family: var(--serif); font-style: italic; }
.card p { margin: 0; font-size: .9rem; color: var(--text-soft); }
.card .card-foot { margin-top: auto; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: .72rem; font-weight: 700; padding: 4px 9px; border-radius: 6px;
  text-transform: uppercase; letter-spacing: .03em;
}
.tag.bull { background: color-mix(in srgb, var(--bull) 15%, transparent); color: var(--bull); }
.tag.bear { background: color-mix(in srgb, var(--bear) 15%, transparent); color: var(--bear); }
.tag.neutral { background: color-mix(in srgb, var(--neutral) 15%, transparent); color: var(--neutral); }
.tag.vol { background: color-mix(in srgb, var(--vol) 15%, transparent); color: var(--vol); }
.tag.diff { background: var(--surface-2); color: var(--text-mute); }
.card .arrow { color: var(--brand); font-weight: 800; }

/* ---------- Strategy detail page ---------- */
.detail-hero { background: var(--surface-2); border-bottom: 1px solid var(--border); }
.detail-hero .wrap { padding: 34px 20px 30px; }
.breadcrumb { font-size: .85rem; color: var(--text-mute); margin-bottom: 12px; }
.breadcrumb a { color: var(--text-soft); }
.detail-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 10px; letter-spacing: -.02em; }
.detail-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.detail-summary { font-size: 1.12rem; color: var(--text-soft); max-width: 720px; margin: 0; }

.detail-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; padding: 40px 0; }
@media (max-width: 900px) { .detail-layout { grid-template-columns: 1fr; } }
.detail-main h2 { font-size: 1.5rem; margin: 34px 0 12px; letter-spacing: -.01em; scroll-margin-top: 80px; }
.detail-main h2:first-child { margin-top: 0; }
.detail-main p { color: var(--text-soft); }
.detail-main ul { color: var(--text-soft); padding-left: 20px; }
.detail-main li { margin-bottom: 7px; }

.callout {
  background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--brand);
  border-radius: 10px; padding: 16px 18px; margin: 18px 0;
}
.callout.example { border-left-color: var(--accent); }
.callout h4 { margin: 0 0 6px; font-size: .95rem; }
.callout p { margin: 0; color: var(--text-soft); font-size: .95rem; }

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 12px; margin: 18px 0; }
.metric { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.metric .k { font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; color: var(--text-mute); font-weight: 700; }
.metric .v { font-size: .98rem; margin-top: 4px; font-weight: 600; }
.metric.profit .v { color: var(--bull); }
.metric.loss .v { color: var(--bear); }

/* payoff chart */
.payoff-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); }
.payoff-card h3 { margin: 0 0 4px; font-size: 1.05rem; }
.payoff-card .hint { font-size: .82rem; color: var(--text-mute); margin: 0 0 10px; }
.payoff-svg { width: 100%; height: auto; display: block; }
.payoff-svg text { font-family: var(--font); }
.pf-frame { fill: none; stroke: var(--border); }
.pf-grid { stroke: var(--border); stroke-dasharray: 3 4; }
.pf-zero { stroke: var(--text-mute); stroke-width: 1; }
.pf-profit { fill: var(--bull); opacity: .16; }
.pf-loss { fill: var(--bear); opacity: .16; }
.pf-line { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linejoin: round; }
.pf-be { fill: var(--accent); }
.pf-be-tx { fill: var(--accent); font-size: 10px; font-weight: 700; }
.pf-label { fill: var(--text-mute); font-size: 11px; }
.pf-line-2 { fill: none; stroke: var(--neutral); stroke-width: 2.4; stroke-linejoin: round; stroke-dasharray: 5 4; }
.greek-svg { margin-top: 6px; }

/* Greek page extras */
.formula { font-family: var(--serif); font-size: 1.05rem; color: var(--text); background: var(--surface-2);
  padding: 10px 14px; border-radius: 8px; margin: 0; overflow-x: auto; }
ul.sources { padding-left: 20px; }
ul.sources li { margin-bottom: 6px; }
.related-links a { display: inline-block; margin: 2px 10px 2px 0; font-weight: 600; }

/* social share panel */
.share-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 18px 0 26px; padding: 12px 14px;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px;
}
.share-label { font-weight: 700; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--text-mute); margin-right: 4px; }
.share-btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .84rem; font-weight: 600; font-family: inherit; line-height: 1;
  padding: 8px 13px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-soft); cursor: pointer;
  transition: transform .1s ease, background .15s, color .15s, border-color .15s;
}
.share-btn svg { width: 16px; height: 16px; fill: currentColor; flex: none; }
.share-btn:hover { transform: translateY(-1px); text-decoration: none; color: #fff; }
.share-btn.wa:hover { background: #25D366; border-color: #25D366; }
.share-btn.x:hover  { background: #000; border-color: #000; }
.share-btn.fb:hover { background: #1877F2; border-color: #1877F2; }
.share-btn.li:hover { background: #0A66C2; border-color: #0A66C2; }
.share-btn.tg:hover { background: #229ED9; border-color: #229ED9; }
.share-btn.em:hover,
.share-btn.copy:hover,
.share-btn.native:hover { background: var(--brand); border-color: var(--brand); }
.share-btn.copied { background: var(--bull); border-color: var(--bull); color: #fff; }
@media (max-width: 560px) {
  .share-btn span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); } /* icon-only, label kept for a11y */
  .share-btn { padding: 9px; }
  .share-label { width: 100%; margin: 0 0 2px; }
}

/* reading-progress bar + reading time */
.read-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 100%;
  transform: scaleX(0); transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  z-index: 60; will-change: transform; pointer-events: none;
}
.read-time {
  display: inline-block; margin-top: 8px; font-size: .82rem; font-weight: 600;
  color: var(--text-mute); background: var(--surface-2); border: 1px solid var(--border);
  padding: 3px 10px; border-radius: 999px;
}

/* comparison tables */
.table-wrap { overflow-x: auto; margin: 14px 0 22px; }
table.cmp { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 420px; }
table.cmp th, table.cmp td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; vertical-align: top; }
table.cmp thead th { background: var(--surface-2); font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--text-mute); }
table.cmp tbody th { background: var(--surface); font-weight: 700; color: var(--text); }
table.cmp td { color: var(--text-soft); }
table.cmp tbody tr:nth-child(even) td, table.cmp tbody tr:nth-child(even) th { background: color-mix(in srgb, var(--surface-2) 50%, var(--surface)); }

/* FAQ */
.faq details {
  border: 1px solid var(--border); border-radius: 10px; margin-bottom: 10px;
  background: var(--surface); overflow: hidden;
}
.faq summary {
  cursor: pointer; padding: 14px 16px; font-weight: 650; list-style: none;
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.3rem; color: var(--brand); font-weight: 700; }
.faq details[open] summary::after { content: "\2212"; }
.faq details[open] summary { border-bottom: 1px solid var(--border); }
.faq .answer { padding: 12px 16px 16px; color: var(--text-soft); font-size: .95rem; }

/* sidebar */
.detail-side { position: sticky; top: 80px; align-self: start; display: flex; flex-direction: column; gap: 18px; }
@media (max-width: 900px) { .detail-side { position: static; } }
.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.toc h4 { margin: 0 0 10px; font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--text-mute); }
.toc a { display: block; padding: 5px 0; color: var(--text-soft); font-size: .9rem; }
.toc a:hover { color: var(--brand); text-decoration: none; }

.related-nav { display: flex; justify-content: space-between; gap: 12px; padding: 26px 0 10px; flex-wrap: wrap; }
.related-nav a { flex: 1; min-width: 200px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 16px; }
.related-nav a:hover { border-color: var(--brand); text-decoration: none; }
.related-nav .dir { font-size: .78rem; color: var(--text-mute); }
.related-nav .nm { font-weight: 700; color: var(--text); }
.related-nav .next { text-align: right; }

/* ---------- Content pages (legal/info) ---------- */
.doc { max-width: 800px; margin: 0 auto; padding: 44px 20px 60px; }
.doc h1 { font-size: 2rem; letter-spacing: -.02em; margin: 0 0 6px; }
.doc .updated { color: var(--text-mute); font-size: .85rem; margin-bottom: 28px; }
.doc h2 { font-size: 1.3rem; margin: 32px 0 10px; }
.doc h3 { font-size: 1.05rem; margin: 22px 0 8px; }
.doc p, .doc li { color: var(--text-soft); }
.doc ul { padding-left: 20px; }

.notice {
  border-radius: 12px; padding: 18px 20px; margin: 22px 0;
  border: 1px solid color-mix(in srgb, var(--bear) 40%, var(--border));
  background: color-mix(in srgb, var(--bear) 8%, var(--surface));
}
.notice strong { color: var(--bear); }

/* ---------- Steps / feature strip ---------- */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 18px; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.feature .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--brand-soft);
  color: var(--brand); display: grid; place-items: center; font-size: 1.3rem; margin-bottom: 12px; font-weight: 800; }
.feature h3 { margin: 0 0 6px; font-size: 1.08rem; }
.feature p { margin: 0; color: var(--text-soft); font-size: .93rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(4, 1fr); gap: 28px; padding: 46px 0 30px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h5 { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-mute); margin: 0 0 12px; }
.footer-grid a { display: block; color: var(--text-soft); font-size: .9rem; padding: 4px 0; }
.footer-brand p { color: var(--text-mute); font-size: .9rem; max-width: 300px; }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 0; display: flex;
  justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--text-mute); font-size: .82rem; }
.footer-disclaimer { background: var(--surface-2); border-top: 1px solid var(--border); }
.footer-disclaimer .wrap { padding: 16px 20px; font-size: .8rem; color: var(--text-mute); }

.empty { text-align: center; color: var(--text-mute); padding: 40px; }

/* ---------- GEO answer-first box ---------- */
.answer-box {
  background: var(--brand-soft); border: 1px solid color-mix(in srgb, var(--brand) 30%, var(--border));
  border-left: 4px solid var(--brand); border-radius: 10px; padding: 16px 18px; margin: 0 0 22px;
  font-size: 1.02rem; color: var(--text) !important;
}
.answer-box b { color: var(--brand); }

/* ---------- Calculators ---------- */
/* ---------- Glossary ---------- */
.gl-az { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 8px; position: sticky; top: 62px;
  background: color-mix(in srgb, var(--bg) 92%, transparent); padding: 8px 0; z-index: 5; }
.gl-az a { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px;
  background: var(--surface-2); border: 1px solid var(--border); font-weight: 700; font-size: .85rem; color: var(--text-soft); }
.gl-az a:hover { border-color: var(--brand); color: var(--brand); text-decoration: none; }
.gl-letter { color: var(--brand); border-bottom: 2px solid var(--border); padding-bottom: 4px; margin-top: 30px; scroll-margin-top: 110px; }
.gl-item { padding: 12px 0; border-bottom: 1px solid var(--border); scroll-margin-top: 110px; }
.gl-item h3 { margin: 0 0 4px; font-size: 1.08rem; }
.gl-item p { margin: 4px 0; }
.gl-aka { color: var(--text-mute); font-size: .88rem; font-style: italic; }

.calc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); margin: 14px 0 26px; }
.calc-controls, .calc-grid { display: grid; gap: 12px; margin-bottom: 14px; }
.calc-controls { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.calc-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.calc label { display: flex; flex-direction: column; gap: 5px; font-size: .8rem; font-weight: 600;
  color: var(--text-soft); }
.calc input, .calc select {
  font: inherit; font-size: .95rem; padding: 9px 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); width: 100%;
}
.calc input:focus, .calc select:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: var(--brand); }
.calc input:disabled { opacity: .45; }
.calc-leg { display: grid; grid-template-columns: 1.1fr 1fr 1fr 1fr .8fr 36px; gap: 8px; align-items: center; margin-bottom: 8px; }
.calc-leg-head { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--text-mute);
  font-weight: 700; margin-bottom: 4px; }
.calc-leg-head span { padding-left: 2px; }
.calc-x { border: 1px solid var(--border); background: var(--surface-2); color: var(--bear);
  border-radius: 8px; height: 38px; cursor: pointer; font-size: 1.1rem; line-height: 1; }
.calc-x:hover { border-color: var(--bear); }
.calc-add { margin-top: 4px; padding: 8px 16px; font-size: .88rem; }
@media (max-width: 620px) {
  .calc-leg { grid-template-columns: 1fr 1fr; }
  .calc-leg-head { display: none; }
}