*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --blue:       #37469D;
  --blue-dark:  #2A3580;
  --blue-mid:   #4A5CB5;
  --blue-light: #7B8FD4;
  --blue-pale:  #EEF1FF;
  --accent:     #82AAFF;
  --bg:         #F6F8FF;
  --dark:       #0D1B3E;
  --text:       #1A1A2E;
  --muted:      #6B7280;
  --white:      #FFFFFF;
  --green:      #1E9E6B;
  --red:        #D4533A;
  --radius:     16px;
  --radius-sm:  10px;
  --shadow:     0 8px 32px rgba(55,70,157,.14);
  --shadow-lg:  0 20px 60px rgba(55,70,157,.22);
  --nav-h:      64px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

/* ───────────── NAV ───────────── */
.nav {
  position: sticky; top: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  height: var(--nav-h);
  padding: 0 clamp(1rem, 5vw, 3rem);
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px) saturate(1.6);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  border-bottom: 1px solid rgba(55,70,157,.1);
}
.nav-logo { display: flex; align-items: center; gap: .6rem; font-weight: 800; font-size: 1.05rem; color: var(--blue); flex-shrink: 0; }
.nav-logo img { height: 28px; width: auto; border-radius: 7px; }
.nav-links { display: flex; align-items: center; gap: .2rem; flex-wrap: wrap; }
.nav-links a {
  padding: .5rem .8rem; border-radius: var(--radius-sm);
  font-size: .88rem; font-weight: 600; color: var(--text);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { background: var(--blue-pale); color: var(--blue); }

/* Right-side icon cluster: search + hamburger, always together in the appbar. */
.nav-actions { display: flex; align-items: center; gap: .3rem; flex-shrink: 0; }
.nav-icon-btn {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0; color: var(--dark);
  transition: background var(--transition);
}
.nav-icon-btn:hover, .nav-icon-btn[aria-expanded="true"] { background: var(--blue-pale); color: var(--blue); }
.nav-icon-btn svg { width: 19px; height: 19px; }

/* Header search panel: drops down under the appbar, same on every page. */
.nav-search-panel {
  position: fixed; left: 0; right: 0; top: var(--nav-h); z-index: 198;
  background: #fff; border-bottom: 1px solid rgba(55,70,157,.1);
  box-shadow: 0 16px 40px rgba(13,27,62,.15);
  padding: 1rem 0;
  opacity: 0; transform: translateY(-8px); pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}
.nav-search-panel.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.search-box--panel { max-width: none; margin: 0; }

/* Hamburger button — hidden on desktop, shown on mobile (see media query below). */
.nav-burger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  transition: background var(--transition);
}
.nav-burger:hover { background: var(--blue-pale); }
.nav-burger span {
  width: 22px; height: 2px; margin: 0 auto; background: var(--dark); border-radius: 2px;
  transition: transform .3s cubic-bezier(.4,0,.2,1), opacity .2s;
}
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-backdrop {
  display: none;
  position: fixed; inset: 0; z-index: 190;
  background: rgba(13,27,62,.35);
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease;
}
.nav-backdrop.open { opacity: 1; pointer-events: auto; }

@media (max-width: 760px) {
  .nav-burger { display: flex; }
  .nav-backdrop { display: block; }
  .nav-links {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 195;
    width: min(78vw, 320px);
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    gap: .3rem;
    background: #fff; padding: calc(var(--nav-h) + 1.2rem) 1.2rem 2rem;
    box-shadow: -8px 0 40px rgba(13,27,62,.2);
    transform: translateX(100%);
    transition: transform .34s cubic-bezier(.3,0,.2,1);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a {
    padding: .95rem 1rem; font-size: 1.02rem; border-radius: 12px;
    opacity: 0; transform: translateY(8px);
    transition: opacity .32s ease, transform .32s ease;
  }
  .nav-links.open a { opacity: 1; transform: translateY(0); }
  .nav-links.open a:nth-child(1) { transition-delay: .05s; }
  .nav-links.open a:nth-child(2) { transition-delay: .1s; }
  .nav-links.open a:nth-child(3) { transition-delay: .15s; }
  .nav-links.open a:nth-child(4) { transition-delay: .2s; }
  .nav-links.open a:nth-child(5) { transition-delay: .25s; }
}

/* ───────────── FOOTER LANGUAGE PICKER (custom, not a native <select>) ───────────── */
.lang-picker { position: relative; display: inline-block; }
.lang-picker-btn {
  display: flex; align-items: center; gap: .5rem;
  padding: .6rem 1rem; border-radius: 999px;
  background: var(--blue-pale); color: var(--blue); font-weight: 700; font-size: .85rem;
  border: 1px solid rgba(55,70,157,.15);
  transition: background var(--transition);
}
.lang-picker-btn:hover { background: #e4e9ff; }
.lang-picker-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.lang-picker-btn .chev { transition: transform var(--transition); }
.lang-picker.open .chev { transform: rotate(180deg); }
.lang-picker-list {
  position: absolute; bottom: calc(100% + .5rem); left: 0; min-width: 160px;
  background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg);
  padding: .4rem; z-index: 50;
  opacity: 0; transform: translateY(6px) scale(.97); pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.lang-picker.open .lang-picker-list { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.lang-picker-list a {
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: .6rem .7rem; border-radius: 10px; font-size: .88rem; font-weight: 600; color: var(--text);
}
.lang-picker-list a:hover { background: var(--blue-pale); color: var(--blue); }
.lang-picker-list a.active { color: var(--blue); font-weight: 800; }
.lang-picker-list a.active::after { content: '✓'; font-size: .8rem; }

/* ───────────── LAYOUT ───────────── */
.wrap { max-width: 980px; margin: 0 auto; padding: 0 clamp(1rem, 5vw, 2rem); }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 clamp(1rem, 5vw, 2rem); }

/* ───────────── HERO / SEARCH ───────────── */
.hero { padding: clamp(2.5rem, 7vw, 4.5rem) 0 clamp(1.5rem, 4vw, 2.5rem); text-align: center; }
.hero-eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--blue); background: var(--blue-pale);
  padding: .35rem .8rem; border-radius: 999px; margin-bottom: 1.1rem;
}
.hero h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); font-weight: 800; color: var(--dark); margin-bottom: .8rem; letter-spacing: -.01em; }
.hero p { font-size: clamp(1rem, 2.5vw, 1.15rem); color: var(--muted); max-width: 46rem; margin: 0 auto 2rem; }

.search-box { position: relative; max-width: 560px; margin: 0 auto; }
.search-box input {
  width: 100%; padding: .95rem 1.2rem .95rem 2.8rem; font-size: .95rem;
  border-radius: 999px; border: 1px solid rgba(55,70,157,.18);
  background: #fff; box-shadow: var(--shadow); color: var(--text);
  font-family: inherit;
}
.search-box input:focus { outline: 2px solid var(--blue-light); }
.search-box svg { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--muted); }
.search-results { margin-top: .6rem; text-align: left; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: none; }
.search-results.open { display: block; }
.search-results a { display: block; padding: .75rem 1.1rem; font-size: .88rem; font-weight: 600; border-bottom: 1px solid var(--blue-pale); }
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--blue-pale); color: var(--blue); }
.search-results .sr-empty { padding: .9rem 1.1rem; font-size: .85rem; color: var(--muted); }
.search-results .sr-tag { display: inline-block; font-size: .68rem; font-weight: 700; text-transform: uppercase; color: var(--blue); margin-right: .5rem; }

/* ───────────── HOME CARDS ───────────── */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; padding: 1.5rem 0 3rem; }
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; } }
.card {
  background: #fff; border-radius: var(--radius); padding: 1.6rem;
  box-shadow: var(--shadow); transition: transform var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column; gap: .7rem;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card-icon {
  width: 42px; height: 42px; border-radius: 12px; background: var(--blue-pale);
  color: var(--blue); display: flex; align-items: center; justify-content: center;
}
.card h2 { font-size: 1.1rem; font-weight: 700; color: var(--dark); }
.card p { font-size: .88rem; color: var(--muted); }

.footer-note { text-align: center; color: var(--muted); font-size: .85rem; padding: 0 0 2rem; }

/* ───────────── PAGE HEADER (manual / faq / errors / contact) ───────────── */
.page-head { padding: clamp(2rem, 5vw, 3rem) 0 1.5rem; }
.breadcrumb { font-size: .82rem; color: var(--muted); margin-bottom: 1rem; }
.breadcrumb a { color: var(--blue); font-weight: 600; }
.page-head h1 { font-size: clamp(1.6rem, 4vw, 2.1rem); font-weight: 800; color: var(--dark); margin-bottom: .6rem; }
.page-head .intro { color: var(--muted); font-size: .98rem; max-width: 42rem; }

/* ───────────── ACCORDION (FAQ / manual categories) ───────────── */
.cat-block { margin-bottom: 2rem; }
.cat-title { font-size: 1.05rem; font-weight: 800; color: var(--blue); margin-bottom: .8rem; padding-left: .1rem; }
details.item {
  background: #fff; border-radius: var(--radius-sm); margin-bottom: .55rem;
  box-shadow: 0 2px 10px rgba(55,70,157,.08); overflow: hidden;
}
details.item summary {
  cursor: pointer; list-style: none; padding: 1rem 1.2rem;
  font-weight: 700; font-size: .95rem; color: var(--text);
  display: flex; align-items: center; justify-content: space-between; gap: .8rem;
}
details.item summary::-webkit-details-marker { display: none; }
details.item summary::after {
  content: '+'; font-size: 1.3rem; font-weight: 400; color: var(--blue); flex-shrink: 0; line-height: 1;
  transition: transform var(--transition);
}
details.item[open] summary::after { transform: rotate(45deg); }
details.item .item-body { padding: 0 1.2rem 1.1rem; font-size: .9rem; color: var(--muted); line-height: 1.6; }
details.item .item-body p + p { margin-top: .5rem; }
details.item .item-body strong { color: var(--text); }

/* Common-errors cards: symptom/fix layout */
.err-item .item-body .row { margin-top: .4rem; }
.err-item .item-body .row b { color: var(--blue); font-weight: 700; display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; margin-bottom: .15rem; }

/* ───────────── CONTACT ───────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; padding: 1rem 0 3rem; }
@media (max-width: 640px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { background: #fff; border-radius: var(--radius); padding: 1.6rem; box-shadow: var(--shadow); }
.contact-card h2 { font-size: 1rem; font-weight: 800; color: var(--dark); margin-bottom: .8rem; }
.contact-email {
  display: inline-block; margin-top: .3rem; padding: .7rem 1.2rem; border-radius: 999px;
  background: var(--blue); color: #fff; font-weight: 700; font-size: .92rem;
}
.contact-card ol { padding-left: 0; counter-reset: step; }
.contact-card ol li {
  position: relative; padding-left: 2rem; margin-bottom: .7rem; font-size: .9rem; color: var(--muted); counter-increment: step;
}
.contact-card ol li::before {
  content: counter(step); position: absolute; left: 0; top: -.05rem;
  width: 1.4rem; height: 1.4rem; border-radius: 50%; background: var(--blue-pale); color: var(--blue);
  font-size: .75rem; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.contact-note { font-size: .82rem; color: var(--muted); margin-top: 1rem; padding: 3rem 0 0; max-width: 42rem; }

/* ───────────── HELPFUL WIDGET ───────────── */
.helpful { margin: 2rem 0 3rem; padding: 1.2rem; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; }
.helpful p { font-weight: 700; margin-bottom: .6rem; font-size: .92rem; }
.helpful .btns { display: flex; gap: .6rem; justify-content: center; }
.helpful button {
  padding: .5rem 1.2rem; border-radius: 999px; border: 1px solid rgba(55,70,157,.2);
  font-weight: 700; font-size: .85rem; color: var(--blue); background: var(--blue-pale);
}
.helpful .thanks { font-size: .85rem; color: var(--green); font-weight: 700; display: none; }

/* ───────────── FOOTER ───────────── */
footer.site-footer { border-top: 1px solid rgba(55,70,157,.1); padding: 2rem 0; margin-top: 2rem; }
footer.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 1.2rem; justify-content: space-between; align-items: center; }
footer.site-footer .fl { display: flex; gap: 1.2rem; flex-wrap: wrap; align-items: center; }
footer.site-footer a { font-size: .85rem; color: var(--muted); font-weight: 600; }
footer.site-footer a:hover { color: var(--blue); }
footer.site-footer .copy { font-size: .8rem; color: var(--muted); }
@media (max-width: 640px) { footer.site-footer .wrap { flex-direction: column; align-items: flex-start; } }

mark { background: #FFE8A3; color: inherit; border-radius: 3px; padding: 0 .1em; }

/* ───────────── OFFICIAL HELP-SITE BADGE (bottom of Manual page) ───────────── */
.official-badge {
  display: flex; align-items: center; gap: .9rem; margin: 2rem 0;
  padding: 1.1rem 1.3rem; border-radius: var(--radius);
  background: var(--blue-pale); border: 1px solid rgba(55,70,157,.15);
}
.official-badge .ob-icon {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: var(--blue); color: #fff; display: flex; align-items: center; justify-content: center;
}
.official-badge .ob-icon svg { width: 20px; height: 20px; }
.official-badge strong { display: block; color: var(--blue); font-size: .85rem; font-weight: 800; }
.official-badge span { display: block; color: var(--muted); font-size: .82rem; margin-top: .15rem; }

/* ───────────── PRIVACY / LEGAL PAGE ───────────── */
.legal-section { margin-bottom: 1.6rem; }
.legal-section h2 { font-size: 1rem; font-weight: 800; color: var(--dark); margin-bottom: .5rem; }
.legal-section p { font-size: .9rem; color: var(--muted); line-height: 1.65; margin-bottom: .5rem; }
.legal-section a { color: var(--blue); font-weight: 600; }