.help-body{background:#fafbfc;font-weight:400}
.help-header{background:#fff;border-bottom:1px solid var(--sa-line)}
.help-brand-name{font-weight:700;color:var(--sa-ink);letter-spacing:-.01em}
.help-header-title{color:var(--sa-muted);font-weight:400}
.help-header-sep{width:1px;height:22px;background:var(--sa-line)}
.help-header-search{position:relative;width:min(260px,100%)}
.help-header-search i{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--sa-muted);font-size:.85rem}
.help-header-search input{width:100%;border:1px solid var(--sa-line);border-radius:8px;padding:.4rem .7rem .4rem 2rem;font-size:.88rem;background:var(--sa-soft)}
.help-header-search input:focus{outline:none;border-color:var(--sa-red);background:#fff}

/* Hero search */
.help-hero{background:#fff;border-bottom:1px solid var(--sa-line);padding:4rem 0 3.2rem;text-align:center}
.help-hero h1{font-size:clamp(1.8rem,3.6vw,2.6rem);font-weight:700;color:var(--sa-ink)}
.help-search-big{position:relative;max-width:640px;margin:1.6rem auto 0}
.help-search-big i{position:absolute;left:20px;top:50%;transform:translateY(-50%);color:var(--sa-muted);font-size:1.1rem}
.help-search-big input{width:100%;border:2px solid var(--sa-line);border-radius:14px;
  padding:1rem 1.2rem 1rem 3rem;font-size:1.05rem;box-shadow:var(--sa-shadow);background:#fff;transition:.15s}
.help-search-big input:focus{outline:none;border-color:var(--sa-red)}

/* Category cards */
.help-cat-card{background:#fff;border:1px solid var(--sa-line);border-radius:14px;padding:1.4rem;
  display:block;text-decoration:none;transition:.18s;height:100%}
.help-cat-card:hover{transform:translateY(-3px);box-shadow:var(--sa-shadow);border-color:var(--sa-red-line)}
.help-cat-card .ic{width:44px;height:44px;border-radius:11px;background:var(--sa-soft);color:var(--sa-muted);
  display:grid;place-items:center;font-size:1.15rem;margin-bottom:.8rem;transition:.18s}
.help-cat-card:hover .ic{background:var(--sa-red-soft);color:var(--sa-red)}
.help-cat-card h3{font-size:1rem;font-weight:600;color:var(--sa-ink);margin-bottom:.3rem}
.help-cat-card:hover h3{color:var(--sa-red)}
.help-cat-card p{font-size:.85rem;font-weight:400;color:var(--sa-muted);margin-bottom:.6rem}
.help-cat-card .count{font-size:.82rem;font-weight:600;color:var(--sa-red)}

/* Section headings */
.help-h2{font-size:1.35rem;font-weight:600;color:var(--sa-ink)}

/* Article */
.help-p{line-height:1.75;font-weight:400;color:var(--sa-body);margin-bottom:1rem}
.help-h3{font-size:1.15rem;font-weight:600;color:var(--sa-ink);margin:1.8rem 0 .7rem;scroll-margin-top:90px}
.help-h4{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--sa-muted);margin:1.3rem 0 .5rem}
.help-list{list-style:none;padding:0;margin:0 0 1rem}
.help-list li{display:flex;gap:.5rem;align-items:flex-start;padding:.22rem 0;font-weight:400;color:var(--sa-body)}
.help-list li i{color:var(--sa-red);margin-top:.15em}
.help-steps{margin:0 0 1rem;padding-left:0;list-style:none;counter-reset:st}
.help-steps li{counter-increment:st;display:flex;gap:.75rem;padding:.4rem 0;font-weight:400;color:var(--sa-body);align-items:flex-start}
.help-steps li::before{content:counter(st);flex-shrink:0;width:26px;height:26px;border-radius:8px;
  background:var(--sa-red-soft);color:var(--sa-red);font-weight:600;font-size:.8rem;display:grid;place-items:center;margin-top:.05em}
.help-box{display:flex;gap:.7rem;align-items:flex-start;border-radius:12px;padding:.9rem 1rem;margin:1rem 0;font-size:.94rem;font-weight:400}
.help-box i{margin-top:.1em}
.help-box--tip{background:var(--sa-red-soft);color:#7c2131}
.help-box--tip i{color:var(--sa-red)}
.help-box--warn{background:#fff8e6;color:#7a5b12;border:1px solid #f3e3b3}
.help-box--warn i{color:#c9971b}
mark{background:#ffe08a;padding:0 .1em;border-radius:3px}

/* TOC */
.help-toc{position:sticky;top:1.2rem;font-size:.88rem}
.help-toc a{display:block;font-weight:400;color:var(--sa-muted);padding:.3rem 0;text-decoration:none;border-left:2px solid var(--sa-line);padding-left:.8rem}
.help-toc a:hover{color:var(--sa-red);border-color:var(--sa-red)}

/* Feedback */
.help-vote-btn{border:1.5px solid var(--sa-line);background:#fff;border-radius:10px;padding:.5rem 1.4rem;font-weight:500;color:var(--sa-ink)}
.help-vote-btn:hover{border-color:var(--sa-red);color:var(--sa-red)}

/* Popular / misc */
.help-pop{display:flex;gap:1rem;align-items:flex-start;padding:1rem;background:#fff;border:1px solid var(--sa-line);
  border-radius:12px;text-decoration:none;transition:.15s;height:100%}
.help-pop:hover{box-shadow:var(--sa-shadow);border-color:var(--sa-red-line)}
.help-pop .cat{font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--sa-red)}
.help-pop h3{font-size:.95rem;font-weight:600;color:var(--sa-ink);margin:.15rem 0 .2rem}
.help-pop p{font-size:.82rem;font-weight:400;color:var(--sa-muted);margin:0 0 .25rem}
.help-pop .date{font-size:.72rem;font-weight:400;color:var(--sa-muted)}

/* Headings + Bootstrap utility softening (weights that exist in Inter) */
.help-body h1,.help-body h2,.help-body h3,.help-body h4,.help-body h5,.help-body h6{font-weight:600}
.help-body .fw-bold{font-weight:600 !important}
.help-body .fw-semibold{font-weight:500 !important}
.help-body p,.help-body .text-muted{font-weight:400}
.help-body .form-label{font-weight:500}

.help-hr{border-color:var(--sa-line);opacity:1}
.help-footer{background:var(--sa-ink)}
.help-footer h6{color:#fff;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:.8rem}
.help-footer a{display:block;color:#9aa2af;text-decoration:none;padding:.22rem 0;font-size:.9rem}
.help-footer a:hover{color:#fff}
/* WYSIWYG-rendered article content */
.help-content h2{font-size:1.2rem;font-weight:600;color:var(--sa-ink);margin:1.6rem 0 .6rem;scroll-margin-top:90px}
.help-content h3{font-size:1.05rem;font-weight:600;color:var(--sa-ink);margin:1.2rem 0 .5rem}
.help-content p{line-height:1.75;font-weight:400;color:var(--sa-body);margin-bottom:1rem}
.help-content ul{list-style:none;padding:0;margin:0 0 1rem}
.help-content ul li{display:flex;gap:.5rem;align-items:flex-start;padding:.22rem 0;font-weight:400;color:var(--sa-body)}
.help-content ul li::before{content:"✓";color:var(--sa-red);font-weight:700}
.help-content ol{padding-left:1.5rem;margin:0 0 1rem}
.help-content ol li{padding:.25rem 0;color:var(--sa-body)}
/* Article images: never overflow, never dominate the page */
.help-content{min-width:0}
.help-content img{
  max-width:100%;
  max-height:480px;          /* cap tall screenshots */
  width:auto;
  height:auto;
  display:block;
  border:1px solid var(--sa-line);
  border-radius:10px;
  margin:.6rem 0;
  background:#fff;
}
.help-content img.help-img-sm{max-width:32%}
.help-content img.help-img-md{max-width:60%}
.help-content img.help-img-full{max-width:100%}
.help-content a{color:var(--sa-red)}
.help-content blockquote{border-left:3px solid var(--sa-line);margin:.8rem 0;padding-left:1rem;color:var(--sa-muted)}
.help-content table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem}
.help-content th,.help-content td{border:1px solid var(--sa-line);padding:.5rem .7rem;text-align:left}
.help-content th{background:var(--sa-soft)}
/* ================= IMAGE LIGHTBOX ================= */
.help-content img{cursor:zoom-in}
.help-lightbox{position:fixed;inset:0;z-index:2000;display:none;
  background:rgba(15,17,22,.88);backdrop-filter:blur(3px);
  align-items:center;justify-content:center;padding:2rem;cursor:zoom-out}
.help-lightbox.open{display:flex}
.help-lightbox img{max-width:94vw;max-height:92vh;width:auto;height:auto;
  border-radius:10px;box-shadow:0 30px 80px -20px rgba(0,0,0,.6);cursor:default}
.help-lightbox .help-lightbox-close{position:fixed;top:18px;right:22px;
  width:42px;height:42px;border:none;border-radius:50%;background:rgba(255,255,255,.12);
  color:#fff;font-size:1.2rem;cursor:pointer;display:grid;place-items:center;transition:.15s}
.help-lightbox .help-lightbox-close:hover{background:var(--sa-red)}
.help-lightbox .help-lightbox-hint{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);
  color:rgba(255,255,255,.65);font-size:.78rem}
/* ================= RED HERO (homepage) ================= */
.help-body .help-hero--red{
  background:linear-gradient(135deg, var(--sa-red) 0%, var(--sa-red-dark) 100%);
  border-bottom:none;
}
.help-hero--red h1{color:#fff}
.help-hero--red p{color:rgba(255,255,255,.85)}
.help-hero--red .help-search-big input{
  border-color:transparent;
  box-shadow:0 14px 34px -12px rgba(0,0,0,.35);
}
.help-hero--red .help-search-big input:focus{border-color:#fff}
.help-hero--red .hero-hint{color:rgba(255,255,255,.75)}
/* ================= FIXED FLOATING HEADER BAR ================= */
.help-header{
  position:fixed;
  top:14px; left:14px; right:14px;
  z-index:1030;
  background:#fff;                       /* keep white — per request */
  border:1px solid var(--sa-line);
  border-radius:14px;
  box-shadow:0 10px 28px -14px rgba(23,26,33,.22);
}
.help-header .container{max-width:100%; padding-inline:1.25rem}

/* Reserve space so content starts below the fixed bar */
.help-body main{padding-top:96px}
@media (max-width:767.98px){
  .help-body main{padding-top:150px}     /* header wraps to 2 rows on small screens */
}

/* Sticky TOC must clear the fixed bar now */
.help-toc{top:96px}

/* Anchor jumps account for the bar */
.help-content h2{scroll-margin-top:110px}
/* Active state for header nav links */
.help-header-title.active-link{color:var(--sa-red);font-weight:600}
/* ================= VIDEO GUIDES ================= */
.vg-hero{background:#fff;border-bottom:1px solid var(--sa-line);padding:3rem 0 2.2rem;text-align:center}
.vg-title{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:700;color:var(--sa-ink)}
.vg-sub{color:var(--sa-muted);margin:.4rem 0 0}
.vg-search{position:relative;max-width:420px;margin:1.4rem auto 0}
.vg-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--sa-muted)}
.vg-search input{width:100%;border:1px solid var(--sa-line);border-radius:10px;
  padding:.65rem .9rem .65rem 2.4rem;font-size:.95rem;background:var(--sa-soft)}
.vg-search input:focus{outline:none;border-color:var(--sa-red);background:#fff}

.vg-section{margin-bottom:2.2rem}
.vg-summary{display:flex;align-items:center;gap:.55rem;cursor:pointer;
  font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--sa-ink);
  list-style:none;padding:.4rem 0;user-select:none}
.vg-summary::-webkit-details-marker{display:none}
.vg-caret{transition:transform .2s;font-size:.8rem;color:var(--sa-muted)}
.vg-section[open] .vg-caret{transform:rotate(180deg)}
.vg-count{background:var(--sa-red-soft);color:var(--sa-red);border-radius:999px;
  font-size:.68rem;padding:.1rem .55rem;font-weight:700}

.vg-row{display:flex;gap:1.1rem;overflow-x:auto;padding:.4rem .1rem 1rem;
  scroll-snap-type:x mandatory}
.vg-row::-webkit-scrollbar{height:6px}
.vg-row::-webkit-scrollbar-thumb{background:var(--sa-line);border-radius:3px}
.vg-row::-webkit-scrollbar-track{background:transparent}

.vg-card{flex:0 0 280px;scroll-snap-align:start;cursor:pointer}
.vg-thumb{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/9;
  background:var(--sa-soft);border:1px solid var(--sa-line);transition:.18s}
.vg-card:hover .vg-thumb{border-color:var(--sa-red);box-shadow:var(--sa-shadow);transform:translateY(-2px)}
.vg-thumb img,.vg-thumb video{width:100%;height:100%;object-fit:cover;display:block}
.vg-play{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.vg-play i{width:46px;height:46px;border-radius:50%;background:rgba(23,26,33,.72);color:#fff;
  display:grid;place-items:center;font-size:1.4rem;transition:.18s}
.vg-card:hover .vg-play i{background:var(--sa-red);transform:scale(1.08)}
.vg-card-title{font-size:.92rem;font-weight:600;color:var(--sa-ink);margin-top:.6rem;line-height:1.4}
.vg-card-sub{font-size:.78rem;color:var(--sa-muted);margin-top:.15rem}
/* ================= VIDEO GUIDES — RED HERO ================= */
.vg-hero--red{
  background:linear-gradient(135deg, var(--sa-red) 0%, var(--sa-red-dark) 100%);
  border-bottom:none;
}
.vg-hero--red .vg-title{color:#fff}
.vg-hero--red .vg-sub{color:rgba(255,255,255,.85)}
.vg-hero--red .vg-search input{
  border-color:transparent;
  background:#fff;
  box-shadow:0 14px 34px -12px rgba(0,0,0,.35);
}
.vg-hero--red .vg-search i{color:var(--sa-muted)}
/* ================= VIDEO TUTORIALS PAGE ================= */
.vg-hero-art{font-size:9rem;color:rgba(255,255,255,.25);text-align:center;line-height:1}
.vg-duration{position:absolute;left:10px;bottom:10px;background:rgba(23,26,33,.85);color:#fff;
  font-size:.68rem;font-weight:700;padding:.15rem .5rem;border-radius:6px;letter-spacing:.05em}
.vg-flag{position:absolute;top:10px;left:10px;background:var(--sa-red);color:#fff;
  font-size:.62rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:.18rem .55rem;border-radius:999px}
.vg-featured-thumb{position:relative;cursor:pointer;background:var(--sa-soft)}
.vg-featured-thumb img,.vg-featured-thumb video{width:100%;height:100%;object-fit:cover}
.vg-card--grid{width:300px}
.vg-card-cat{font-size:.72rem;font-weight:700;color:var(--sa-red);text-transform:uppercase;
  letter-spacing:.08em;margin-top:.2rem}
.vg-lang{font-size:.62rem;margin-top:.2rem}
/* ================= VIDEO HERO — buttons + search polish ================= */
.vg-btn{
  display:inline-flex;align-items:center;
  padding:.72rem 1.5rem;border-radius:12px;
  font-weight:600;font-size:.95rem;text-decoration:none;
  transition:.18s;
}
.vg-btn--solid{background:#fff;color:var(--sa-red);box-shadow:0 10px 24px -10px rgba(0,0,0,.35)}
.vg-btn--solid:hover{background:#fff;transform:translateY(-2px);box-shadow:0 14px 28px -10px rgba(0,0,0,.4)}
.vg-btn--ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.vg-btn--ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff;transform:translateY(-2px)}

/* Search: aligned with content, larger, calmer */
.vg-search--hero{margin:1.8rem 0 0;max-width:560px;text-align:left}
.vg-search--hero input{
  border:none;border-radius:12px;
  padding:.95rem 1.1rem .95rem 2.9rem;
  font-size:1rem;
  box-shadow:0 12px 30px -12px rgba(0,0,0,.35);
}
.vg-search--hero i{left:16px;font-size:1rem}

/* ================= RED HERO UNDER THE FIXED BAR (no white gap) ================= */
.help-hero--red,
.vg-hero--red{
  margin-top:-96px;                          /* cover the reserved header space */
  padding-top:calc(96px + 3.2rem);           /* keep hero content clear of the bar */
}
@media (max-width:767.98px){
  /* header wraps taller on mobile — cover that too */
  .help-hero--red,
  .vg-hero--red{margin-top:-150px;padding-top:calc(150px + 2.4rem)}
}
/* ================= VIDEO CARDS — Udemy style ================= */
.vg-card{background:#fff;border:1px solid var(--sa-line);border-radius:14px;overflow:hidden;
  cursor:pointer;transition:.18s;height:100%;display:flex;flex-direction:column}
.vg-card:hover{transform:translateY(-3px);box-shadow:var(--sa-shadow);border-color:var(--sa-red-line)}
.vg-thumb{position:relative;aspect-ratio:16/9;background:var(--sa-soft);overflow:hidden}
.vg-thumb img,.vg-thumb video{width:100%;height:100%;object-fit:cover;display:block;transition:transform .25s}
.vg-card:hover .vg-thumb img,.vg-card:hover .vg-thumb video{transform:scale(1.04)}
.vg-play{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.vg-play i{width:46px;height:46px;border-radius:50%;background:rgba(23,26,33,.72);color:#fff;
  display:grid;place-items:center;font-size:1.4rem;transition:.18s}
.vg-card:hover .vg-play i{background:var(--sa-red);transform:scale(1.08)}
.vg-duration{position:absolute;left:10px;bottom:10px;background:rgba(23,26,33,.85);color:#fff;
  font-size:.68rem;font-weight:700;padding:.15rem .5rem;border-radius:6px;letter-spacing:.05em}
.vg-flag{position:absolute;top:10px;left:10px;background:var(--sa-red);color:#fff;
  font-size:.62rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:.18rem .55rem;border-radius:999px}

.vg-card-body{padding:.9rem 1rem 1rem;display:flex;flex-direction:column;flex:1}
.vg-card-title{font-size:.98rem;font-weight:600;color:var(--sa-ink);line-height:1.4;margin-bottom:.3rem}
.vg-card:hover .vg-card-title{color:var(--sa-red)}
.vg-card-sub{font-size:.82rem;font-weight:400;color:var(--sa-muted);margin-bottom:.5rem;line-height:1.45}
.vg-meta{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:auto}
.vg-meta-badge{font-size:.68rem;font-weight:600;color:var(--sa-muted);
  background:var(--sa-soft);border:1px solid var(--sa-line);border-radius:999px;
  padding:.15rem .55rem}
.vg-meta-badge--cat{color:var(--sa-red);background:var(--sa-red-soft);border-color:var(--sa-red-line)}

/* Grid sections */
.vg-section-title{font-size:.82rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--sa-ink);margin-bottom:1.1rem;
  display:flex;align-items:center;gap:.5rem}
.vg-section-title::before{content:"";width:18px;height:2px;background:var(--sa-red);display:inline-block}
/* ================= FEATURED THUMB — hard cap (final override) ================= */
.vg-featured-thumb,
.vg-featured-thumb--sm{
  height:240px !important;
  max-height:240px !important;
  overflow:hidden;
}
.vg-featured-thumb img,
.vg-featured-thumb video{
  width:100% !important;
  height:100% !important;
  object-fit:cover !important;
}
/* ================= STAR RATING ================= */
.sa-stars{display:inline-flex;gap:.15rem}
.sa-star{background:none;border:none;font-size:1.6rem;color:#d4d8de;cursor:pointer;
  padding:0 .1rem;transition:transform .1s,color .1s}
.sa-star:hover{transform:scale(1.2)}
.sa-star:hover i,
.sa-star:hover ~ form .sa-star i{color:var(--sa-red)}
/* ================= STAR RATING ================= */
.sa-stars{display:inline-flex;gap:.15rem}
.sa-star{background:none;border:none;font-size:1.7rem;color:#d4d8de;cursor:pointer;
  padding:0 .1rem;transition:transform .1s,color .1s;line-height:1}
.sa-star:hover{transform:scale(1.15)}
body { background:#f5f6f8; font-family:'Inter','Kantumruy Pro','Noto Sans Khmer',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif; }