/* Nihehe Support / Knowledgebase */
.kb-main { background: var(--page); font-family: var(--font); color: var(--ink); min-height: 60vh; }
.kb-main *, .kb-main *::before, .kb-main *::after { box-sizing: border-box; }
.kb-main a { color: var(--brand); }

/* Hero (flows out of the navy header) */
.kb-hero { position: relative; overflow: hidden; background: var(--brand); color: #fff; text-align: center; padding: 48px 20px 84px; transition: padding .3s var(--ease); }
.kb-hero::before { content: ""; position: absolute; inset: -40% -10% auto auto; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(0, 174, 231, .32), rgba(0, 174, 231, 0) 68%); pointer-events: none; }
.kb-hero::after { content: ""; position: absolute; inset: auto auto -55% -8%; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(0, 174, 231, .18), rgba(0, 174, 231, 0) 70%); pointer-events: none; }
.kb-hero-inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.kb-eyebrow { display: inline-block; margin-bottom: 14px; padding: 7px 14px; border-radius: var(--radius-pill); background: rgba(255, 255, 255, .12); font: 700 13px/1 var(--font); letter-spacing: .02em; }
.kb-hero h1 { margin: 0 0 8px; font: 800 clamp(30px, 5vw, 44px)/1.15 var(--font); letter-spacing: -.02em; }
.kb-hero p { margin: 0 auto 26px; max-width: 520px; color: rgba(255, 255, 255, .82); font: 400 17px/1.5 var(--font); }
.kb-hero--slim { padding: 22px 20px 34px; }
.kb-hero--slim .kb-eyebrow, .kb-hero--slim p { display: none; }
.kb-hero--slim h1 { font-size: 24px; margin-bottom: 14px; }
.kb-hero--slim .kb-chips { display: none; }

.kb-search { position: relative; text-align: left; }
.kb-search svg.kb-mag { position: absolute; left: 22px; top: 19px; color: var(--muted); pointer-events: none; }
.kb-search input { display: block; width: 100%; height: 60px; padding: 0 24px 0 56px; border: 2px solid transparent; border-radius: var(--radius-pill); background: #fff; color: var(--ink); font: 600 17px/1 var(--font); box-shadow: 0 12px 32px rgba(0, 0, 0, .22); transition: border-color .2s var(--ease), box-shadow .2s var(--ease); -webkit-appearance: none; appearance: none; }
.kb-search input::placeholder { color: #7a8898; font-weight: 400; }
.kb-search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 5px rgba(0, 174, 231, .3), 0 12px 32px rgba(0, 0, 0, .22); }
.kb-suggest { position: absolute; z-index: 20; left: 0; right: 0; top: calc(100% + 10px); max-height: 380px; overflow: auto; padding: 8px; border-radius: 24px; background: #fff; box-shadow: 0 20px 50px rgba(19, 45, 76, .3); animation: kb-rise .2s var(--ease) both; }
.kb-suggest[hidden] { display: none; }
.kb-sug { display: flex; flex-direction: column; gap: 2px; padding: 12px 16px; border-radius: 16px; color: var(--ink) !important; text-decoration: none; }
.kb-sug:hover, .kb-sug.is-active { background: var(--brand-light); }
.kb-sug-title { font: 700 15px/1.3 var(--font); }
.kb-sug-cat { color: var(--muted); font: 400 13px/1.3 var(--font); }
.kb-sug-all { align-items: center; margin-top: 4px; border-top: 1px solid var(--line); border-radius: 0 0 16px 16px; font: 700 14px/1 var(--font); }
.kb-sug-none { padding: 16px; color: var(--ink); font: 400 15px/1.5 var(--font); }
.kb-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 18px; }
.kb-chips span { align-self: center; color: rgba(255, 255, 255, .7); font: 600 13px/1 var(--font); }
.kb-chips button { min-height: 40px; padding: 0 16px; border: 1.5px solid rgba(255, 255, 255, .35); border-radius: var(--radius-pill); background: transparent; color: #fff; font: 700 14px/1 var(--font); cursor: pointer; transition: background-color .15s var(--ease), transform .15s var(--ease); }
.kb-chips button:hover { background: rgba(255, 255, 255, .14); }
.kb-chips button:active { transform: scale(.98); }

/* Layout */
.kb-wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px 56px; animation: kb-rise .4s var(--ease) both; }
.kb-home .kb-cats { margin-top: -44px; }
.kb-wrap.kb-two { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 24px; align-items: start; margin-top: 28px; }
.kb-wrap.kb-narrow { max-width: 820px; margin-top: 28px; }
.kb-col { min-width: 0; }

/* Topic cards */
.kb-cats { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; position: relative; z-index: 2; }
.kb-cat { display: flex; flex-direction: column; gap: 6px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); color: var(--ink) !important; text-decoration: none; box-shadow: var(--shadow-card); transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease); }
.kb-cat:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 14px 32px rgba(19, 45, 76, .14); }
.kb-cat:active { transform: scale(.99); }
.kb-cat:focus-visible, .kb-row:focus-visible, .kb-side-link:focus-visible, .kb-btn:focus-visible, .kb-pill:focus-visible, .kb-chips button:focus-visible, .kb-sug:focus-visible, .kb-crumbs a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.kb-cat-icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; margin-bottom: 8px; border-radius: 50%; background: var(--brand-light); color: var(--brand); }
.kb-cat-title { font: 800 18px/1.25 var(--font); }
.kb-cat-blurb { color: var(--muted); font: 400 14px/1.5 var(--font); }
.kb-cat-count { align-self: flex-start; margin-top: 8px; padding: 6px 12px; border-radius: var(--radius-pill); background: var(--page); color: var(--brand); font: 700 12px/1 var(--font); }

/* Lists */
.kb-block { margin-top: 40px; }
.kb-block h2, .kb-related h2 { margin: 0 0 16px; font: 800 22px/1.3 var(--font); }
.kb-rows { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.kb-rows-one { grid-template-columns: 1fr; gap: 10px; }
.kb-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 64px; padding: 14px 20px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); color: var(--ink) !important; text-decoration: none; transition: border-color .15s var(--ease), background-color .15s var(--ease), transform .15s var(--ease); }
.kb-row:hover { border-color: var(--accent); background: #fbfeff; }
.kb-row:active { transform: scale(.99); }
.kb-row-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.kb-row-title { font: 700 16px/1.35 var(--font); }
.kb-row-cat { color: var(--muted); font: 400 13px/1.3 var(--font); }
.kb-chev { flex: none; color: var(--muted); transition: transform .15s var(--ease), color .15s var(--ease); }
.kb-row:hover .kb-chev { transform: translateX(3px); color: var(--brand); }

/* Contact band */
.kb-contact { margin-top: 40px; padding: 32px; border-radius: var(--radius-card); background: var(--brand); color: #fff; text-align: center; }
.kb-contact h2 { margin: 0 0 8px; font: 800 24px/1.3 var(--font); }
.kb-contact p { margin: 0 auto 20px; max-width: 460px; color: rgba(255, 255, 255, .82); font: 400 16px/1.5 var(--font); }
.kb-contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.kb-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1.5px solid transparent; border-radius: var(--radius-pill); font: 800 15px/1 var(--font); text-decoration: none; cursor: pointer; transition: transform .15s var(--ease), background-color .15s var(--ease), border-color .15s var(--ease); }
.kb-btn:active { transform: scale(.98); }
.kb-btn-primary { background: var(--accent); color: var(--brand) !important; }
.kb-btn-primary:hover { background: #33c1ee; }
.kb-btn-ghost { background: transparent; color: #fff !important; border-color: rgba(255, 255, 255, .5); }
.kb-btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.kb-card .kb-btn-primary { background: var(--brand); color: #fff !important; }
.kb-back { margin-top: 16px; background: var(--surface); color: var(--brand) !important; border-color: var(--line); }

/* Sidebar */
.kb-side { position: sticky; top: 88px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); box-shadow: var(--shadow-card); }
.kb-side-title { padding: 6px 12px 10px; color: var(--muted); font: 800 12px/1 var(--font); letter-spacing: .08em; text-transform: uppercase; }
.kb-side-link { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 0 12px; border-radius: 14px; color: var(--ink) !important; font: 600 15px/1.2 var(--font); text-decoration: none; transition: background-color .15s var(--ease); }
.kb-side-link svg { flex: none; color: var(--muted); }
.kb-side-link:hover { background: var(--page); }
.kb-side-link.is-current { background: var(--brand-light); font-weight: 800; }
.kb-side-link.is-current svg { color: var(--brand); }

/* Breadcrumbs */
.kb-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; margin: 0 0 16px; font: 600 14px/1.4 var(--font); }
.kb-crumbs a { text-decoration: none; padding: 4px 2px; border-radius: 8px; }
.kb-crumbs a:hover { text-decoration: underline; }
.kb-sep { color: var(--muted); }
.kb-here { color: var(--muted); font-weight: 400; }

/* Cards, articles */
.kb-card { padding: 32px; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); box-shadow: var(--shadow-card); }
.kb-card h1 { margin: 0 0 8px; font: 800 clamp(26px, 4vw, 34px)/1.2 var(--font); letter-spacing: -.01em; }
.kb-card h1:focus { outline: none; }
.kb-lead { margin: 0 0 24px; color: var(--muted); font: 400 17px/1.55 var(--font); }
.kb-meta { margin-bottom: 24px; color: var(--muted); font: 400 13px/1 var(--font); }
.kb-body { font: 400 16.5px/1.75 var(--font); }
.kb-body p { margin: 0 0 16px; }
.kb-body h2 { margin: 32px 0 10px; font: 800 20px/1.3 var(--font); }
.kb-body ul, .kb-body ol { margin: 0 0 18px; padding-left: 24px; }
.kb-body li { margin: 0 0 8px; padding-left: 4px; }
.kb-body li::marker { color: var(--brand); font-weight: 800; }
.kb-body a { text-underline-offset: 3px; }
.kb-note { margin: 22px 0; padding: 16px 20px; border-radius: 18px; background: var(--brand-light); color: var(--brand); font: 400 15.5px/1.6 var(--font); }
.kb-feedback { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px; margin-top: 36px; padding: 16px 20px; border-radius: 20px; background: var(--page); }
.kb-fb-q { margin-right: 4px; font: 800 15px/1.3 var(--font); }
.kb-fb-thanks { font: 600 15px/1.4 var(--font); }
.kb-fb-actions { display: inline-flex; gap: 8px; }
.kb-pill { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border: 1.5px solid var(--line); border-radius: var(--radius-pill); background: var(--surface); color: var(--brand) !important; font: 800 15px/1 var(--font); text-decoration: none; cursor: pointer; transition: transform .15s var(--ease), background-color .15s var(--ease), border-color .15s var(--ease); }
.kb-pill:hover { background: var(--brand-light); border-color: var(--accent); }
.kb-pill:active { transform: scale(.97); }
.kb-pill-solid { background: var(--brand); color: #fff !important; border-color: var(--brand); }
.kb-pill-solid:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.kb-related { margin-top: 36px; }

/* WhatsApp button */
.kb-fab { position: fixed; z-index: 900; right: 20px; bottom: calc(20px + env(safe-area-inset-bottom)); display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 20px 0 16px; border-radius: var(--radius-pill); background: #128c4a; color: #fff !important; font: 800 15px/1 var(--font); text-decoration: none; box-shadow: 0 10px 28px rgba(0, 0, 0, .28); transition: transform .15s var(--ease), background-color .15s var(--ease); }
.kb-fab:hover { background: #0f7a40; }
.kb-fab:active { transform: scale(.97); }
.kb-fab:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.kb-noscript { max-width: 640px; margin: 32px auto; padding: 24px; border-radius: 20px; background: var(--surface); font: 400 16px/1.6 var(--font); }

@keyframes kb-rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .kb-wrap.kb-two { grid-template-columns: 1fr; }
  .kb-side { display: none; }
  .kb-rows { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .kb-hero { padding: 32px 16px 72px; }
  .kb-hero p { font-size: 16px; margin-bottom: 20px; }
  .kb-hero--slim { padding: 18px 16px 28px; }
  .kb-search input { height: 56px; font-size: 16px; padding-left: 52px; }
  .kb-search svg.kb-mag { left: 20px; top: 17px; }
  .kb-wrap { padding: 0 16px 48px; }
  .kb-cats { grid-template-columns: 1fr; gap: 12px; }
  .kb-cat { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 4px 14px; padding: 18px; }
  .kb-cat-icon { margin-bottom: 0; width: 48px; height: 48px; }
  .kb-cat-title { flex: 1; min-width: 0; }
  .kb-cat-blurb { flex-basis: 100%; }
  .kb-cat-count { margin-top: 4px; }
  .kb-card { padding: 22px 20px; }
  .kb-contact { padding: 26px 20px; }
  .kb-contact-actions .kb-btn { width: 100%; }
  .kb-body { font-size: 16px; }
  .kb-fab { right: 14px; padding: 0 16px 0 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .kb-wrap, .kb-suggest { animation: none; }
  .kb-cat, .kb-row, .kb-btn, .kb-pill, .kb-chev, .kb-hero { transition: none; }
}