/* Trang huong dan SEO (huong-dan/*.html). Chi dung cho bai viet, khong anh huong trang chu.
 * Dung chung token --rd-* trong redesign.min.css. Tien to :is(#rd, html) de du do uu tien. */

:is(#rd, html) .rd-guide-page { overflow-x: clip; }
:is(#rd, html) .guide { padding: 28px 16px 0; }
:is(#rd, html) .guide-layout { display: grid; grid-template-columns: 250px minmax(0, 760px); gap: 48px; justify-content: center; max-width: var(--rd-max, 1200px); margin: 0 auto; }
:is(#rd, html) .guide-article { min-width: 0; color: var(--rd-text-2, #BCC8E2); font-size: 17px; line-height: 1.7; }

/* Dau bai */
:is(#rd, html) .guide-hero { grid-column: 1 / -1; max-width: 860px; }
:is(#rd, html) .guide-crumb { margin: 0 0 14px; color: var(--rd-muted, #8F9DBD); font: 500 13px/1.5 var(--rd-mono, monospace); }
:is(#rd, html) .guide-crumb a { color: var(--rd-text-2, #BCC8E2); text-decoration: underline; text-underline-offset: 2px; }
:is(#rd, html) .guide-hero h1 { margin: 10px 0 16px; color: var(--rd-text, #EAF1FF); font-size: clamp(30px, 4.4vw, 46px); line-height: 1.12; }
:is(#rd, html) .guide-lead { margin: 0 0 14px; color: var(--rd-text, #EAF1FF); font-size: 18px; line-height: 1.65; }
:is(#rd, html) .guide-meta { margin: 0; color: var(--rd-muted, #8F9DBD); font-size: 14px; }

/* Muc luc */
:is(#rd, html) .guide-toc { align-self: start; position: sticky; top: 96px; padding: 16px 18px; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: var(--rd-radius, 10px); background: var(--rd-bg-2, #0D1324); }
:is(#rd, html) .guide-toc p { margin: 0 0 8px; color: var(--rd-text, #EAF1FF); font: 600 13px/1.4 var(--rd-mono, monospace); letter-spacing: .04em; text-transform: uppercase; }
:is(#rd, html) .guide-toc ol { margin: 0; padding-left: 20px; color: var(--rd-muted, #8F9DBD); font-size: 14.5px; line-height: 1.5; }
:is(#rd, html) .guide-toc li + li { margin-top: 7px; }
:is(#rd, html) .guide-toc a { color: var(--rd-text-2, #BCC8E2); text-decoration: none; }
:is(#rd, html) .guide-toc a:hover { color: var(--rd-accent, #22D3EE); text-decoration: underline; }

/* Noi dung */
:is(#rd, html) .guide-article section { scroll-margin-top: 90px; padding-top: 36px; }
:is(#rd, html) .guide-article h2 { margin: 0 0 14px; padding-top: 28px; border-top: 1px solid var(--rd-line, rgba(125,170,255,.16)); color: var(--rd-text, #EAF1FF); font-size: clamp(24px, 3vw, 31px); line-height: 1.22; }
:is(#rd, html) .guide-article h3 { margin: 26px 0 10px; color: var(--rd-text, #EAF1FF); font-size: clamp(18px, 2vw, 21px); }
:is(#rd, html) .guide-article p { margin: 0 0 14px; }
:is(#rd, html) .guide-article ul, :is(#rd, html) .guide-article ol { margin: 0 0 16px; padding-left: 22px; }
:is(#rd, html) .guide-article li + li { margin-top: 6px; }
:is(#rd, html) .guide-article strong { color: var(--rd-text, #EAF1FF); }
:is(#rd, html) .guide-article a:not(.btn) { color: var(--rd-accent, #22D3EE); text-decoration: underline; text-underline-offset: 2px; }
:is(#rd, html) .guide-article code { padding: 1px 6px; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: 4px; background: rgba(34, 211, 238, .07); color: var(--rd-text, #EAF1FF); font-size: .88em; overflow-wrap: anywhere; }
:is(#rd, html) .guide-article kbd { display: inline-block; padding: 0 6px; border: 1px solid var(--rd-line-2, rgba(125,170,255,.3)); border-bottom-width: 2px; border-radius: 4px; background: var(--rd-surface, #111933); color: var(--rd-text, #EAF1FF); font-size: .85em; line-height: 1.5; }
:is(#rd, html) .guide-article pre { max-width: 100%; margin: 0 0 18px; padding: 14px 16px; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: var(--rd-radius-sm, 6px); background: #080B14; color: #D6DEE8; font: 400 14px/1.6 var(--rd-mono, monospace); tab-size: 4; }
:is(#rd, html) .guide-article pre code { padding: 0; border: 0; background: none; font-size: inherit; overflow-wrap: normal; white-space: pre; }
:is(#rd, html) .guide-cap { margin: -8px 0 18px; color: var(--rd-muted, #8F9DBD); font-size: 14px; }

/* Buoc lam */
:is(#rd, html) .guide-article ol.guide-steps { counter-reset: gstep; margin: 0 0 18px; padding: 0; list-style: none; }
:is(#rd, html) .guide-steps > li { counter-increment: gstep; position: relative; padding: 12px 14px 12px 52px; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: var(--rd-radius-sm, 6px); background: var(--rd-bg-2, #0D1324); }
:is(#rd, html) .guide-steps > li + li { margin-top: 8px; }
:is(#rd, html) .guide-steps > li::before { content: counter(gstep, decimal-leading-zero); position: absolute; left: 14px; top: 13px; color: var(--rd-accent, #22D3EE); font: 600 14px/1.6 var(--rd-mono, monospace); }

/* Bang */
:is(#rd, html) .guide-table { max-width: 100%; margin: 0 0 18px; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: var(--rd-radius-sm, 6px); }
:is(#rd, html) .guide-table table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 15px; line-height: 1.5; }
:is(#rd, html) .guide-table th, :is(#rd, html) .guide-table td { padding: 9px 12px; border-bottom: 1px solid var(--rd-line, rgba(125,170,255,.16)); text-align: left; vertical-align: top; }
:is(#rd, html) .guide-table th { background: rgba(34, 211, 238, .08); color: var(--rd-text, #EAF1FF); font-weight: 600; white-space: nowrap; }
:is(#rd, html) .guide-table tr:last-child td { border-bottom: 0; }
:is(#rd, html) .guide-table td:first-child { color: var(--rd-text, #EAF1FF); }

/* Hinh */
:is(#rd, html) .guide-fig { margin: 4px 0 20px; padding: 10px; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: var(--rd-radius, 10px); background: #0A0C10; }
:is(#rd, html) .guide-fig svg, :is(#rd, html) .guide-fig img { display: block; width: 100%; height: auto; border-radius: 4px; }
:is(#rd, html) .guide-fig img { background: #fff; }
:is(#rd, html) .guide-fig figcaption { margin-top: 8px; color: var(--rd-text-2, #BCC8E2); font-size: 14px; line-height: 1.5; text-align: center; }

/* Ghi chu */
:is(#rd, html) .guide-note { margin: 0 0 18px; padding: 12px 16px; border-left: 3px solid var(--rd-accent, #22D3EE); border-radius: 0 6px 6px 0; background: rgba(34, 211, 238, .07); font-size: 16px; }
:is(#rd, html) .guide-note.is-warn { border-left-color: var(--rd-c-yellow, #FACC15); background: rgba(250, 204, 21, .08); }
:is(#rd, html) .guide-note p:last-child, :is(#rd, html) .guide-note ul:last-child { margin-bottom: 0; }

/* Hop qua tang */
:is(#rd, html) .guide-gift { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center; margin: 8px 0 20px; padding: 18px 20px; border: 1px solid var(--rd-accent-line, rgba(34,211,238,.45)); border-radius: var(--rd-radius, 10px); background: linear-gradient(165deg, #121B38, #0D1430); }
:is(#rd, html) .guide-gift p { margin: 0; }
:is(#rd, html) .guide-gift strong { display: block; margin-bottom: 4px; font-size: 18px; }
:is(#rd, html) .guide-article .guide-gift .btn { color: var(--rd-cta-ink, #04111C); background: var(--rd-cta, #22D3EE); border-color: var(--rd-cta, #22D3EE); white-space: nowrap; }

/* Cau hoi thuong gap */
:is(#rd, html) .guide-faq details { margin: 0 0 10px; padding: 14px 16px; border: 1px solid var(--rd-line, rgba(125,170,255,.16)); border-radius: var(--rd-radius-sm, 6px); background: var(--rd-bg-2, #0D1324); }
:is(#rd, html) .guide-faq summary { color: var(--rd-text, #EAF1FF); font-weight: 600; cursor: pointer; }
:is(#rd, html) .guide-faq details p { margin: 10px 0 0; }

/* Bai lien quan */
:is(#rd, html) .guide-related { margin: 28px 0 0; padding: 16px 18px; border: 1px dashed var(--rd-line-2, rgba(125,170,255,.3)); border-radius: var(--rd-radius, 10px); }
:is(#rd, html) .guide-related p { margin: 0; }
:is(#rd, html) .rd-guide-page .rd-gift-next { padding-top: 56px; }
:is(#rd, html) .rd-guide-page .rd-gift-next-actions .btn { padding-top: 10px; padding-bottom: 10px; text-align: center; line-height: 1.3; }

@media (max-width: 1000px) {
  :is(#rd, html) .guide-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; max-width: 760px; }
  :is(#rd, html) .guide-toc { position: static; }
}

@media (max-width: 560px) {
  :is(#rd, html) .guide { padding-top: 20px; }
  :is(#rd, html) .guide-article { font-size: 16px; }
  :is(#rd, html) .guide-lead { font-size: 17px; }
  :is(#rd, html) .guide-article pre { font-size: 13px; padding: 12px; }
  :is(#rd, html) .guide-table table { font-size: 14px; }
  :is(#rd, html) .guide-steps > li { padding: 10px 12px 10px 44px; }
  :is(#rd, html) .guide-steps > li::before { left: 12px; top: 11px; }
  :is(#rd, html) .guide-gift { grid-template-columns: 1fr; }
  :is(#rd, html) .guide-article .guide-gift .btn { width: 100%; white-space: normal; }
  :is(#rd, html) .rd-gift-page .rd-gift-next-actions .btn { width: 100%; }
}