/* MyUnitCalcs – design tokens and global layout */
:root {
  --color-primary: #1E40AF;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1E3A8A;
  --color-success: #16A34A;
  --color-success-light: #DCFCE7;
  --color-background: #FFFFFF;
  --color-surface: #F3F4F6;
  --color-surface-hover: #E9EAEC;
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-focus: #1E40AF;
  --color-cta: #D97706;
  --color-error: #DC2626;
  --color-white: #FFFFFF;
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-base: 1.6;
  --line-height-tight: 1.3;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 20px;
  --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 48px; --space-16: 64px;
  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px; --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --bp-sm: 640px; --bp-md: 768px; --bp-lg: 1024px; --bp-xl: 1280px;
  --muc-header-h: 64px; --muc-z-header: 1000;
}
html { box-sizing: border-box; }
*, *::before, *::after { box-sizing: inherit; }
html, body { max-width: 100%; overflow-x: hidden; }
body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s, color .2s, border-color .2s;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
.sr, .muc-sr, .screen-reader-text, .muc-hero .screen-reader-text { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.muc-container { max-width: 1200px; margin-left: auto; margin-right: auto; padding-left: var(--space-4); padding-right: var(--space-4); }
html[data-muc-theme="dark"], body.muc-dark {
  --color-background: #0F172A; --color-surface: #1E293B; --color-surface-hover: #334155;
  --color-text-primary: #F1F5F9; --color-text-secondary: #94A3B8; --color-text-muted: #94A3B8;
  --color-border: #334155; --color-border-focus: #60A5FA;
  --color-surface-legacy: #1E293B;
}
.muc-header {
  position: sticky; top: 0; z-index: var(--muc-z-header);
  min-height: var(--muc-header-h); display: flex; flex-direction: column; justify-content: center;
  background: var(--color-white); border-bottom: 1px solid var(--color-border);
  transition: box-shadow .2s, background .2s;
}
html[data-muc-theme="dark"] .muc-header { background: #0B1220; }
.muc-header--scrolled { box-shadow: var(--shadow-md); }
.muc-header__bar {
  min-height: var(--muc-header-h); display: flex; flex-wrap: nowrap; align-items: center; justify-content: space-between; gap: var(--space-3); max-width: 1200px; margin: 0 auto; padding: 0 var(--space-4); width: 100%;
}
.muc-header__logo { display: flex; align-items: center; flex: 0 0 auto; line-height: 0; }
.muc-header__logo-img { height: 40px; width: auto; max-width: 200px; }
.muc-header__hamburger { display: flex; }
@media (min-width: 1024px) {
  .muc-header__hamburger { display: none !important; }
}
.muc-icon-btn {
  min-width: 48px; min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border: none; background: transparent; border-radius: var(--radius-md);
  color: var(--color-text-primary); cursor: pointer;
}
.muc-icon-btn:hover, .muc-icon-btn:focus-visible { background: var(--color-surface); }
.muc-hamburger { width: 24px; height: 2px; background: currentColor; position: relative; }
.muc-hamburger::before, .muc-hamburger::after { content: ""; position: absolute; left: 0; right: 0; height: 2px; background: currentColor; }
.muc-hamburger::before { top: -7px; } .muc-hamburger::after { top: 7px; }
.muc-header__actions { display: flex; align-items: center; gap: var(--space-1); flex: 0 0 auto; }
#muc-dm-btn .muc-icon--moon { display: none; }
html[data-muc-theme="dark"] #muc-dm-btn .muc-icon--sun { display: none; }
html[data-muc-theme="dark"] #muc-dm-btn .muc-icon--moon { display: inline; }
.muc-nav--desktop { display: none; flex: 1; justify-content: center; flex-wrap: nowrap; gap: 0; align-items: stretch; }
@media (min-width: 1024px) { .muc-nav--desktop { display: flex; } .muc-nav-mobile { display: none !important; } }
.muc-nav__item { position: relative; }
.muc-nav__link, .muc-nav__more-btn {
  min-height: 64px; padding: 0 var(--space-3); display: inline-flex; align-items: center; gap: 4px;
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  color: var(--color-text-primary); text-decoration: none; border: none; background: transparent; cursor: pointer;
  white-space: nowrap; font: inherit;
}
.muc-nav__link:hover, .muc-nav__link.is-active, .muc-nav__link:focus-visible { color: var(--color-primary); }
.muc-nav__drop {
  position: absolute; top: 100%; left: 0; min-width: 200px; padding: var(--space-2) 0;
  background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-md); z-index: 50; display: none; flex-direction: column; max-height: 70vh; overflow: auto;
}
.muc-nav__item:hover .muc-nav__drop, .muc-nav__item:focus-within .muc-nav__drop, .muc-nav__item--open .muc-nav__drop { display: flex; }
.muc-nav__dlink { padding: 10px var(--space-4); font-size: var(--font-size-sm); color: var(--color-text-primary); }
.muc-nav__dlink:hover, .muc-nav__dlink:focus-visible { background: var(--color-surface); color: var(--color-primary); }
.muc-nav__drop--mega { left: auto; right: 0; min-width: 360px; flex-direction: row; flex-wrap: wrap; gap: var(--space-4); padding: var(--space-4); }
.muc-mega__col { flex: 1 1 100px; display: flex; flex-direction: column; gap: var(--space-2); }
.muc-mega__title { font-weight: var(--font-weight-bold); color: var(--color-primary); margin-bottom: var(--space-1); }
.muc-mega__link { font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.muc-mega__link:hover { color: var(--color-primary); }
.muc-search-fly[hidden] { display: none !important; }
.muc-search-fly { padding: var(--space-3) var(--space-4); border-top: 1px solid var(--color-border); background: var(--color-surface); }
.muc-nav-mobile[hidden] { display: none !important; }
.muc-nav-mobile {
  position: fixed; top: 64px; left: 0; right: 0; bottom: 0; background: var(--color-white); z-index: 900;
  padding: var(--space-4); overflow-y: auto; border-top: 1px solid var(--color-border);
}
.muc-mnav__a, .muc-mnav__home { display: block; padding: var(--space-3) 0; font-size: var(--font-size-lg); color: var(--color-text-primary); }
.muc-acc { border-bottom: 1px solid var(--color-border); }
.muc-acc__head { width: 100%; text-align: left; min-height: 48px; padding: var(--space-3) 0; border: none; background: none; font: var(--font-weight-semibold) var(--font-size-base) var(--font-primary); color: var(--color-text-primary); }
.muc-acc__body { padding-bottom: var(--space-2); }
.muc-main { min-height: 40vh; }
.muc-footer { background: #F3F4F6; color: var(--color-text-primary); }
html[data-muc-theme="dark"] .muc-footer { background: #0f1728; }
.muc-footer__grid { display: grid; gap: var(--space-8); padding: var(--space-10) 0; grid-template-columns: 1fr; }
@media (min-width: 768px) { .muc-footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .muc-footer__grid { grid-template-columns: repeat(4, 1fr); } }
.muc-footer__h { font-size: var(--font-size-sm); text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-secondary); }
.muc-footer__list { list-style: none; margin: 0; padding: 0; }
.muc-footer__list li { margin: var(--space-2) 0; }
.muc-footer__list a { color: var(--color-text-primary); }
.muc-footer__tagline { color: var(--color-text-secondary); max-width: 32ch; }
.muc-footer__bar { background: #111827; color: #9CA3AF; padding: var(--space-4) 0; font-size: var(--font-size-sm); }
.muc-footer__bar .muc-container, .muc-footer__bar-text { text-align: center; margin: 0; }
.muc-hero { text-align: center; padding: 60px 0 40px; }
.muc-hero__h { font-size: var(--font-size-3xl); line-height: var(--line-height-tight); font-weight: var(--font-weight-bold); margin: 0 0 var(--space-4); max-width: 800px; margin-left: auto; margin-right: auto; }
.muc-hero__sub { font-size: var(--font-size-lg); color: var(--color-text-secondary); margin: 0 0 var(--space-8); }
.muc-hero__search { max-width: 800px; margin: 0 auto; display: flex; gap: var(--space-2); flex-wrap: wrap; }
.muc-hero__input { flex: 1 1 200px; min-height: 52px; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 0 var(--space-4); font-size: var(--font-size-base); }
.muc-hero__btn { min-height: 48px; padding: 0 var(--space-6); background: var(--color-cta); color: #fff; font-weight: var(--font-weight-semibold); border: none; border-radius: var(--radius-md); cursor: pointer; }
.muc-cats__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 640px) { .muc-cats__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .muc-cats__grid { grid-template-columns: repeat(4, 1fr); } }
.muc-catcard {
  display: flex; flex-direction: column; align-items: flex-start; text-align: left; text-decoration: none; color: inherit;
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 24px;
  box-shadow: var(--shadow-sm); transition: box-shadow .2s, border-color .2s, transform .2s; color: var(--color-text-primary);
}
.muc-catcard:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary); transform: translateY(-2px); }
.muc-catcard__name { font-size: var(--font-size-lg); font-weight: var(--font-weight-bold); margin: var(--space-2) 0; }
.muc-catcard__count { font-size: var(--font-size-sm); color: var(--color-primary); font-weight: var(--font-weight-medium); }
.muc-catcard__desc { color: var(--color-text-secondary); font-size: var(--font-size-sm); }
.muc-section__title { text-align: center; font-size: var(--font-size-2xl); margin-bottom: var(--space-6); }
.muc-popular { margin-bottom: var(--space-16); }
.muc-popular__row { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; justify-content: center; }
@media (max-width: 639px) { .muc-popular__row { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; padding-bottom: 8px; } }
.muc-pill { display: inline-block; padding: 10px 16px; border-radius: var(--radius-full); background: #E8EEF8; color: var(--color-primary); font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); white-space: nowrap; }
.muc-pill:hover { background: #D8E2F3; }
.muc-why { background: #F9FAFB; margin: 0; padding: var(--space-12) 0; }
html[data-muc-theme="dark"] .muc-why { background: #0c1526; }
.muc-why__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-8); }
@media (min-width: 768px) { .muc-why__grid { grid-template-columns: repeat(3, 1fr); } }
.muc-why__item { text-align: center; }
.muc-why__icon { font-size: 28px; }
.muc-why__h { font-size: var(--font-size-lg); }
.muc-why__p { color: var(--color-text-secondary); margin: 0; }
.muc-articlecard { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); }
.muc-articlecard__cat { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; color: var(--color-primary); margin-bottom: var(--space-2); }
.muc-articlecard__title { font-size: var(--font-size-xl); margin: 0 0 8px; }
.muc-articlecard__title a { color: var(--color-text-primary); }
.muc-articlecard__ex { color: var(--color-text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.muc-articlecard__meta { font-size: var(--font-size-xs); color: var(--color-text-muted); }
.muc-recent__grid { display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
@media (min-width: 768px) { .muc-recent__grid { grid-template-columns: repeat(3, 1fr); } }
.muc-recent__more { text-align: center; margin: var(--space-8) 0 0; }
.muc-textlink { color: var(--color-primary); font-weight: var(--font-weight-medium); }
.muc-index .muc-layout { display: grid; gap: var(--space-8); grid-template-columns: 1fr; }
.muc-article { margin-bottom: var(--space-6); }
.muc-breadcrumb { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-bottom: var(--space-3); }
.muc-breadcrumb a { color: var(--color-text-secondary); }
.muc-breadcrumb__current { color: var(--color-text-primary); }
.muc-ad { margin: var(--space-8) 0; padding: 0; }
.muc-ad__label { font-size: 10px; color: var(--color-text-muted); text-align: center; text-transform: uppercase; letter-spacing: 0.06em; }
.muc-ad__box { min-height: 120px; display: flex; align-items: center; justify-content: center; background: var(--color-surface); border: 1px dashed var(--color-border); border-radius: var(--radius-md); color: var(--color-text-muted); }
.muc-ref__more a { color: var(--color-primary); font-size: var(--font-size-sm); }
.muc-table-note { font-size: var(--font-size-xs); color: var(--color-text-muted); }
.muc-articleprose a { color: var(--color-primary); font-weight: 500; }
.muc-articleprose--toc { }
.muc-share { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.muc-share button { min-height: 48px; padding: 0 var(--space-4); border: 1px solid var(--color-border); background: #fff; border-radius: var(--radius-md); cursor: pointer; font: inherit; }
.muc-cat__filters { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: var(--space-4) 0; }
.muc-cat__f { padding: 8px 14px; border-radius: var(--radius-full); background: #fff; border: 1px solid var(--color-border); }
.mu-cat__f.is-on, .muc-cat__f.is-on { background: #E8EEF8; border-color: var(--color-primary); color: var(--color-primary); }
.muc-toolrow { position: relative; }
.mu-pagination, .muc-pagination { display: flex; justify-content: center; margin: var(--space-8) 0; gap: var(--space-2); }