/* =====================================================================
   SERPUPDATE Landing V2 — scrape.do-inspired, brand SERPUPDATE (light)
   Scope: .lv2  (chỉ load trên template-landing-v2.php)
   Tokens: serpupdate-tokens.css
   ===================================================================== */

/* ── Ambient background (light) — đặt trên #wrapper để phủ liền cả dải header (hết khối 2 bên) ── */
.lv2 { color: var(--text-primary); position: relative; isolation: isolate; background: transparent; }
body:has(.lv2) {
  background-color: var(--page-bg);
  background-image:
    linear-gradient(to bottom, var(--page-bg) 0, transparent 340px, transparent calc(100% - 340px), var(--page-bg) 100%),
    linear-gradient(to right, transparent calc(50% - 600px), rgba(248,249,251,0.7) calc(50% - 520px), rgba(248,249,251,0.7) calc(50% + 520px), transparent calc(50% + 600px)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='46' height='46' viewBox='0 0 46 46'%3E%3Cpath d='M23 18.5 C23.3 22.4 23.6 22.7 27.5 23 C23.6 23.3 23.3 23.6 23 27.5 C22.7 23.6 22.4 23.3 18.5 23 C22.4 22.7 22.7 22.4 23 18.5 Z' fill='%235271ff' fill-opacity='0.26'/%3E%3C/svg%3E");
  background-size: 100% 100%, 100% 100%, 46px 46px;
  background-repeat: no-repeat, no-repeat, repeat;
}
body:has(.lv2) #wrapper,
body:has(.lv2) #main { background-color: transparent !important; background-image: none !important; }
.lv2-container { max-width: 1140px; margin: 0 auto; padding: 0 24px; position: relative; }

/* Backgrounds cho từng Section để xen kẽ màu / lưới sao */
.lv2 .rc-engine, .lv2-steps, .lv2-problem, .lv2-solution, .lv2-audit, .ab-frosted { background: rgba(248,250,252,0.78); }

/* ── Buttons ── */
.lv2-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 9999px;
  font-weight: 700; font-size: 15px; line-height: 1; cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.lv2-btn--primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-md); }
.lv2-btn--primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.lv2-btn--ghost { background: #fff; color: var(--text-primary); border: 1px solid var(--border); }
.lv2-btn--ghost:hover { border-color: var(--primary); color: var(--primary); }

/* ── HERO ── */
.lv2-hero {
  position: relative; text-align: center;
  padding: 84px 0 72px;
  background:
    radial-gradient(60% 70% at 50% 0%, rgba(82,113,255,0.10) 0%, transparent 70%),
    var(--page-bg);
  overflow: hidden;
}
.lv2-hero__inner { position: relative; max-width: 880px; }
.lv2-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 26px; }
.lv2-badge-trust {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; border: 1px solid var(--border); border-radius: 9999px;
  padding: 6px 14px; font-size: 12px; font-weight: 600; color: var(--text-secondary);
  box-shadow: var(--shadow-xs); letter-spacing: .01em;
}
.lv2-badge-trust strong { color: var(--text-primary); }
.lv2-hero__title {
  font-family: var(--font-sans);
  font-size: clamp(34px, 5.2vw, 56px); font-weight: 800; line-height: 1.1;
  letter-spacing: -0.01em; color: var(--text-primary); margin: 0 0 20px;
}
.lv2-hero__sub {
  font-size: clamp(15px, 1.6vw, 18px); line-height: 1.6; color: var(--text-secondary);
  max-width: 660px; margin: 0 auto 30px;
}
.lv2-hero__sub strong { color: var(--primary); font-weight: 700; }
.lv2-hero__cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.lv2-hero__note { margin: 18px 0 0; font-size: 13px; color: var(--text-muted); }

/* ── LOGO BAR ── */
.lv2-logos { padding: 40px 0 44px; border-bottom: 1px solid var(--border-light); }
.lv2-logos__label { text-align: center; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--text-muted); margin: 0 0 22px; }
.lv2-logos__row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 36px; }
.lv2-logo { height: 38px; width: auto; object-fit: contain; filter: grayscale(1); opacity: .55; transition: filter var(--transition-fast), opacity var(--transition-fast); }
.lv2-logo:hover { filter: grayscale(0); opacity: 1; }

/* ── SECTION HEAD ── */
.lv2-section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.lv2-eyebrow { display: inline-block; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--primary); background: var(--primary-tint); padding: 5px 12px; border-radius: 9999px; margin-bottom: 14px; }
.lv2-section-title { font-family: var(--font-sans); font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; line-height: 1.15; color: var(--text-primary); margin: 0 0 12px; text-wrap: balance; }
.lv2-hero__title, .rc-calc__title, .lv2-cta__title, .lv2-show-title { text-wrap: balance; }
.lv2-section-sub { font-size: 16px; color: var(--text-secondary); margin: 0; }

/* ── FEATURES ── */
.lv2-features { padding: 84px 0; }
.lv2-feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.lv2-feature-grid--3 { grid-template-columns: repeat(3, 1fr); }
.lv2-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: 26px 22px; box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.lv2-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.lv2-card__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: var(--radius-lg);
  background: var(--primary-tint); color: var(--primary); margin-bottom: 16px;
}
.lv2-card__title { font-size: 17px; font-weight: 700; color: var(--text-primary); margin: 0 0 8px; }
.lv2-card__desc { font-size: 14px; line-height: 1.6; color: var(--text-secondary); margin: 0 0 14px; }
.lv2-card__link { font-size: 14px; font-weight: 700; color: var(--primary); display: inline-flex; gap: 4px; }
.lv2-card__link:hover { gap: 8px; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) { .lv2-feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 849px)  { .lv2-features { padding: 60px 0; } .lv2-hero { padding: 60px 0 52px; } }
@media (max-width: 549px)  {
  .lv2-feature-grid { grid-template-columns: 1fr; }
  .lv2-hero__cta { flex-direction: column; }
  .lv2-btn { width: 100%; justify-content: center; }
  .lv2-logos__row { gap: 24px; }
}

/* ── BENTO: số liệu + testimonial ── */
.lv2-bento { padding: 0 0 84px; }
.lv2-bento-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.lv2-bento-quote {
  grid-column: span 2; grid-row: span 2; margin: 0;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%); color: #fff; border: none; border-radius: var(--radius-xl);
  padding: 40px; display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.25);
}
.lv2-bento-quote blockquote { font-size: clamp(16px, 1.6vw, 19px); line-height: 1.6; font-weight: 500; font-style: italic; margin: 0 0 32px; color: #fff !important; text-shadow: 0 1px 2px rgba(0,0,0,0.1); border-left: none; padding-left: 0; text-align: justify; }
.lv2-quote-author { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #fff; }
.lv2-quote-avatar { width: 44px; height: 44px; border-radius: 50%; background: rgba(255, 255, 255, 0.2); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.lv2-quote-role { color: rgba(255, 255, 255, 0.8); font-size: 13px; font-weight: normal; }
.lv2-stat { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 24px; display: flex; flex-direction: column; gap: 6px; justify-content: center; box-shadow: var(--shadow-sm); }
.lv2-stat__num { font-family: var(--font-mono); font-size: clamp(28px, 3vw, 36px); font-weight: 700; color: var(--primary); letter-spacing: -.02em; }
.lv2-stat__label { font-size: 13px; color: var(--text-muted); }

/* ── VẤN ĐỀ → GIẢI PHÁP ── */
.lv2-problem { padding: 84px 0 36px; background: var(--surface-2); }
.lv2-solution { padding: 48px 0 84px; background: var(--surface-2); }
.lv2-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.lv2-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.lv2-mini { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 32px 28px; box-shadow: var(--shadow-sm); transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast); }
.lv2-mini:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.lv2-mini--pain { }
.lv2-mini--gain { }
.lv2-mini__check { display: inline-flex; width: 44px; height: 44px; border-radius: var(--radius-lg); background: var(--green-tint); color: var(--green-deep); align-items: center; justify-content: center; margin-bottom: 20px; }
.lv2-mini__title { font-size: 18px; font-weight: 700; color: var(--text-primary); margin: 0 0 10px; }
.lv2-mini__desc { font-size: 14.5px; line-height: 1.65; color: var(--text-secondary); margin: 0; }

/* ── ĐÁNH GIÁ (REVIEWS) ── */
.lv2-reviews { padding: 84px 0; }
.lv2-reviews__inner { display: flex; gap: 48px; align-items: center; }
.lv2-reviews__head { flex: 0 0 320px; }
.lv2-reviews__nav { display: flex; gap: 12px; margin-top: 32px; }
.lv2-nav-btn { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-primary); transition: all 0.2s ease; background: #fff; }
.lv2-nav-btn:hover { background: var(--surface-2); border-color: var(--text-muted); }
.lv2-reviews__grid { flex: 1; display: flex; gap: 24px; overflow-x: auto; padding-bottom: 12px; scrollbar-width: none; }
.lv2-reviews__grid::-webkit-scrollbar { display: none; }
.lv2-review-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 32px 24px; display: flex; flex-direction: column; box-shadow: var(--shadow-sm); min-width: 320px; max-width: 380px; flex-shrink: 0; }
.lv2-review__stars { color: #fbbc05; font-size: 18px; margin-bottom: 16px; letter-spacing: 2px; }
.lv2-review__text { font-size: 14.5px; line-height: 1.6; color: var(--text-secondary); margin: 0 0 24px; flex: 1; display: flex; flex-direction: column; align-items: flex-start; justify-content: space-between; }
.lv2-review__text p { margin: 0 0 12px; }
.lv2-review__link { display: inline-flex; align-items: center; gap: 4px; font-size: 13.5px; font-weight: 600; color: var(--primary); text-decoration: none; transition: all 0.2s ease; margin-top: auto; }
.lv2-review__link:hover { opacity: 0.8; gap: 6px; }
.lv2-review__author { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--border); padding-top: 20px; }
.lv2-review__avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--surface-2); display: inline-flex; align-items: center; justify-content: center; color: var(--text-muted); }
.lv2-review__meta { display: flex; flex-direction: column; }
.lv2-review__meta strong { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.lv2-review__meta span { font-size: 12px; color: var(--text-muted); }

@media (max-width: 991px) {
  .lv2-reviews__inner { flex-direction: column; align-items: flex-start; }
  .lv2-reviews__head { flex: auto; max-width: 100%; }
}

/* ── DẢI CTA ── */
.lv2-cta { padding: 84px 0; }
.lv2-cta__box { background: linear-gradient(135deg, #1a1f4d 0%, var(--primary-dark) 65%, var(--primary) 120%); border-radius: 24px; padding: 56px 32px; text-align: center; color: #fff; box-shadow: var(--shadow-lg); }
.lv2-cta__title { font-family: var(--font-sans); font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin: 0 0 10px; color: #fff; }
.lv2-cta__sub { font-size: 16px; color: rgba(255,255,255,.82); margin: 0 auto 26px; max-width: 680px; line-height: 1.6; }
.lv2-btn--white { background: #fff; color: var(--primary-dark); box-shadow: var(--shadow-md); }
.lv2-btn--white:hover { background: #fff; color: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-lg); }

/* ── FAQ (details/summary) ── */
.lv2-faq { padding: 0 0 96px; }
.lv2-faq__inner { max-width: 820px; }
.lv2-faq__list { display: flex; flex-direction: column; gap: 12px; }
.lv2-faq__item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 0 20px; box-shadow: var(--shadow-xs); }
.lv2-faq__item summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; font-weight: 700; font-size: 15px; color: var(--text-primary); }
.lv2-faq__item summary::-webkit-details-marker { display: none; }
.lv2-faq__icon { flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--primary-tint); color: var(--primary); display: inline-flex; align-items: center; justify-content: center; font-size: 18px; line-height: 1; transition: transform var(--transition-fast); }
.lv2-faq__item[open] .lv2-faq__icon { transform: rotate(45deg); }
.lv2-faq__a { padding: 0 0 18px; font-size: 14px; line-height: 1.7; color: var(--text-secondary); }

/* ── RESPONSIVE (sections cụm 2) ── */
@media (max-width: 1024px) {
  .lv2-bento-grid { grid-template-columns: repeat(2, 1fr); }
  .lv2-bento-quote { grid-column: span 2; grid-row: auto; }
  .lv2-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 849px) {
  .lv2-grid-3, .lv2-grid-4 { grid-template-columns: 1fr; }
}
@media (max-width: 549px) {
  .lv2-bento-grid { grid-template-columns: 1fr; }
  .lv2-bento-quote { grid-column: span 1; }
  .lv2-cta__box { padding: 40px 20px; }
}

/* ── TÍNH NĂNG CHI TIẾT (alternating) ── */
.lv2-showcase { padding: 84px 0; }
.lv2-show-row { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding: 40px 0; }
.lv2-show-row + .lv2-show-row { border-top: 1px solid var(--border-light); }
.lv2-show-row--rev .lv2-show-text { order: 2; }
.lv2-show-title { font-size: clamp(20px, 2.4vw, 26px); font-weight: 800; color: var(--text-primary); margin: 10px 0 12px; line-height: 1.25; }
.lv2-show-desc { font-size: 15px; line-height: 1.6; color: var(--text-secondary); margin: 0 0 18px; }
.lv2-checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.lv2-checklist li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-primary); }
.lv2-checklist svg { flex-shrink: 0; color: var(--green-deep); background: var(--green-tint); border-radius: 50%; padding: 3px; width: 22px; height: 22px; }
.lv2-show-panel { width: 100%; min-height: 240px; background: linear-gradient(135deg, var(--surface-2), #fff); border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); padding: 16px; }
.lv2-show-panel__dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--border-2); margin-right: 6px; }
.lv2-show-panel__body { display: flex; align-items: center; justify-content: center; height: 200px; font-family: var(--font-sans); font-size: 24px; color: var(--primary); opacity: .45; }

/* ── CÁCH HOẠT ĐỘNG ── */
.lv2-steps { padding: 84px 0; background: var(--surface-2); }
.lv2-step { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 28px 24px; box-shadow: var(--shadow-sm); }
.lv2-step__num { display: inline-flex; width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #fff; font-family: var(--font-mono); font-weight: 700; font-size: 18px; align-items: center; justify-content: center; margin-bottom: 16px; }
.lv2-step__title { font-size: 17px; font-weight: 700; color: var(--text-primary); margin: 0 0 8px; }
.lv2-step__desc { font-size: 14px; line-height: 1.6; color: var(--text-secondary); margin: 0; }

/* ── DÀNH CHO AI (audience) ── */
.lv2-audience { padding: 84px 0; }

/* ── AUDIT TOÀN DIỆN ── */
.lv2-audit { padding: 84px 0; background: var(--surface-2); }
.lv2-audit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.lv2-audit-item { display: flex; gap: 12px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 18px; box-shadow: var(--shadow-xs); }
.lv2-audit-dot { flex-shrink: 0; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); margin-top: 6px; box-shadow: 0 0 0 4px var(--primary-tint); }
.lv2-audit-title { font-size: 15px; font-weight: 700; color: var(--text-primary); margin: 0 0 4px; }
.lv2-audit-desc { font-size: 13px; line-height: 1.55; color: var(--text-secondary); margin: 0; }

/* ── RESPONSIVE (sections nội dung) ── */
@media (max-width: 1024px) { .lv2-audit-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 849px) {
  .lv2-show-row { grid-template-columns: 1fr; gap: 22px; }
  .lv2-show-row--rev .lv2-show-text { order: 0; }
  .lv2-show-visual { display: none; }
  .lv2-audit-grid { grid-template-columns: 1fr; }
}

/* ════════ RANK CHECKER PAGE (.rc-*) ════════ */
.lv2-btn--full { width: 100%; justify-content: center; }
.rc-hl { color: var(--primary); }

/* Nhấn mạnh chữ quan trọng trong Title/H2: gạch brush xanh + sao nhỏ cuối cụm */
.lv2-mark {
  position: relative; white-space: nowrap;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='16' viewBox='0 0 200 16' preserveAspectRatio='none'%3E%3Cpath d='M4 11 C46 4 92 14 132 8 C162 4 184 10 196 6' stroke='%235271ff' stroke-width='5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat center bottom;
  background-size: 100% 0.32em;
  padding-bottom: 0.16em;
}
.lv2-mark--sparkle::after {
  content: '';
  position: absolute; top: -0.35em; right: -0.7em;
  width: 0.5em; height: 0.5em;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2 C13 9 15 11 22 12 C15 13 13 15 12 22 C11 15 9 13 2 12 C9 11 11 9 12 2 Z' fill='%235271ff'/%3E%3C/svg%3E") no-repeat center / contain;
}
.rc-why-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 849px) { .rc-why-grid { grid-template-columns: 1fr; } }

/* Calculator */
.rc-calc-wrap { padding: 0 0 16px; margin-top: -36px; position: relative; z-index: 2; }
.rc-calc {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg); padding: 28px 28px 30px; max-width: 960px; margin: 0 auto;
}
.rc-calc__head { text-align: center; margin-bottom: 22px; }
.rc-calc__title { font-size: clamp(19px, 2.2vw, 24px); font-weight: 800; color: var(--text-primary); margin: 8px 0 0; }
.rc-calc__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 26px; align-items: stretch; }

.rc-field { display: block; margin-bottom: 22px; }
.rc-field__label { font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.rc-field__val { float: right; font-family: var(--font-mono); font-weight: 700; color: var(--primary); }
.rc-field input[type=range] { width: 100%; margin-top: 12px; }

.rc-modes { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }
.rc-mode { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--text-primary); padding: 11px 14px; border: 1px solid var(--border); border-radius: var(--radius-md); cursor: pointer; transition: border-color var(--transition-fast); }
.rc-mode:hover { border-color: var(--primary); }
.rc-mode input { accent-color: var(--primary); }
.rc-mode strong { color: var(--primary); }

/* Custom Sliders */
.lv2-slider-wrap {
  position: relative;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}
.lv2-slider-val {
  text-align: center; margin-bottom: 20px;
}
.lv2-slider-val__currency {
  font-size: 24px; font-weight: 700; color: var(--text-muted);
  vertical-align: top; line-height: 1; margin-right: 2px;
}
.lv2-slider-val__num {
  font-size: 48px; font-weight: 800; color: var(--text-primary);
  line-height: 1; letter-spacing: -0.04em;
}
.lv2-slider-val__unit {
  font-size: 14px; font-weight: 700; color: var(--text-muted);
  display: inline-block; margin-left: 6px;
}
.lv2-slider-val__num--huge { font-size: 64px; }
.lv2-slider-val__currency--huge { font-size: 32px; }
.lv2-range {
  -webkit-appearance: none;
  width: 100%; height: 8px;
  background: #e2e8f0; border-radius: 99px;
  outline: none; margin: 0; padding: 0;
  background-image: linear-gradient(var(--primary), var(--primary));
  background-size: 0% 100%; background-repeat: no-repeat;
  cursor: pointer;
}
.lv2-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  background: #fff; border: 2px solid var(--primary);
  border-radius: 50%; box-shadow: 0 2px 6px rgba(82, 113, 255, 0.3);
  cursor: pointer; transition: transform 0.1s;
}
.lv2-range::-webkit-slider-thumb:hover { transform: scale(1.12); }
.lv2-range::-moz-range-thumb {
  width: 18px; height: 18px;
  background: #fff; border: 2px solid var(--primary);
  border-radius: 50%; box-shadow: 0 2px 6px rgba(82, 113, 255, 0.3);
  cursor: pointer;
}
.lv2-slider-labels {
  display: flex; justify-content: space-between;
  margin-top: 12px; font-size: 13px; font-weight: 600; color: var(--text-muted);
}

.rc-calc__result { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; display: flex; flex-direction: column; }
.rc-calc__total { text-align: center; margin-bottom: 14px; }
.rc-calc__total span { display: block; font-family: var(--font-mono); font-size: clamp(30px, 4vw, 42px); font-weight: 700; color: var(--primary); letter-spacing: -.02em; }
.rc-calc__total small { color: var(--text-secondary); font-size: 14px; }
.rc-calc__lines { list-style: none; margin: 0 0 14px; padding: 14px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.rc-calc__lines li { display: flex; justify-content: space-between; align-items: center; font-size: 14.5px; color: var(--text-primary); padding: 6px 0; }
.rc-calc__lines--sentence li { display: block; text-align: left; line-height: 1.55; }
.rc-calc__lines strong { font-family: var(--font-mono); color: var(--text-primary); }
.rc-calc__note { font-size: 13px; color: var(--text-secondary); line-height: 1.55; margin: 0 0 12px; }
.rc-usd { color: var(--text-secondary); font-weight: 600; font-size: 12px; white-space: nowrap; }
.rc-calc__fx { font-size: 13.5px; color: var(--text-secondary); line-height: 1.55; margin: 4px 0 16px; }
.rc-calc__fx strong { color: var(--text-primary); font-weight: 700; }
.rc-calc__result .lv2-btn { margin-top: auto; }

@media (max-width: 749px) {
  .rc-calc__grid { grid-template-columns: 1fr; }
  .rc-calc-wrap { margin-top: -20px; }
}

/* So sánh chi phí */
.rc-compare { padding: 84px 0; }
.rc-compare__grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 20px; align-items: center; max-width: 900px; margin: 0 auto; }
.rc-compare__card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 30px 24px; text-align: center; box-shadow: var(--shadow-sm); position: relative; }
.rc-compare__card--new { border: 2px solid var(--primary); box-shadow: 0 12px 32px rgba(82,113,255,0.16); }
.rc-compare__tag { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .04em; padding: 4px 14px; border-radius: 9999px; }
.rc-compare__label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.rc-compare__price { font-family: var(--font-mono); font-size: clamp(30px, 4vw, 42px); font-weight: 700; margin: 10px 0 4px; line-height: 1; }
.rc-compare__card--old .rc-compare__price { color: var(--text-muted); }
.rc-compare__card--old .rc-compare__price s { text-decoration-color: var(--danger); text-decoration-thickness: 2px; }
.rc-compare__card--new .rc-compare__price { color: var(--primary); }
.rc-compare__unit { font-size: 12.5px; color: var(--text-secondary); }
.rc-compare__vs { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.rc-compare__x { font-family: var(--font-mono); font-size: 24px; font-weight: 700; color: var(--green-deep); background: var(--green-tint); width: 58px; height: 58px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.rc-compare__xlabel { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--green-deep); }
.rc-compare__note { text-align: center; margin: 28px 0 0; font-size: 14px; color: var(--text-secondary); }
.rc-compare__note strong { color: var(--primary); }
@media (max-width: 749px) {
  .rc-compare__grid { grid-template-columns: 1fr; }
  .rc-compare__vs { flex-direction: row; gap: 10px; padding: 4px 0; }
  .rc-compare__x { width: 48px; height: 48px; font-size: 20px; }
}

/* 2 cách dùng */
.rc-ways { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.rc-way { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 26px; box-shadow: var(--shadow-sm); }
.rc-way__tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary); background: var(--primary-tint); padding: 5px 12px; border-radius: 9999px; margin-bottom: 14px; }
.rc-way h3 { font-size: 18px; font-weight: 700; color: var(--text-primary); margin: 0 0 14px; }
@media (max-width: 849px) { .rc-ways { grid-template-columns: 1fr; } }

/* Extension page — lưới 5 tính năng */
.ex-grid5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1100px) { .ex-grid5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 749px)  { .ex-grid5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .ex-grid5 { grid-template-columns: 1fr; } }
.ex-intent { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .ex-intent { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 549px) { .ex-intent { grid-template-columns: 1fr; } }

/* Extension page — bảng giá */
.ex-price { grid-template-columns: repeat(2, 1fr); align-items: stretch; }
.ex-price .rc-way { display: flex; flex-direction: column; }
.ex-price .rc-way__tag { align-self: flex-start; } /* nhãn Free / Extension Pro gọn theo nội dung, không kéo full chiều ngang */
.ex-price .rc-way .ex-note { margin-top: auto; padding-top: 12px; }
@media (max-width: 768px) { .ex-price { grid-template-columns: 1fr; } }
.rc-way--pro { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary), var(--shadow-md, 0 8px 24px rgba(82,113,255,0.12)); }
.ex-price-big { font-family: var(--font-mono); font-size: 34px; font-weight: 800; color: var(--text-primary); margin: 10px 0 2px; line-height: 1.1; }
.ex-price-big span { font-family: var(--font-sans, inherit); font-size: 14px; font-weight: 500; color: var(--text-secondary); }
.ex-tiers { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 14px; }
.ex-tier { flex: 1 1 0; min-width: 84px; text-align: center; padding: 14px 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--page-bg); }
.ex-tier strong { display: block; font-family: var(--font-mono); font-size: 22px; font-weight: 800; color: var(--text-primary); }
.ex-tier span { display: block; font-size: 12px; color: var(--text-secondary); margin-top: 2px; }
.ex-tier--best { border-color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); position: relative; }
.ex-tier--best::after { content: "Tốt nhất"; position: absolute; top: -9px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 10px; font-weight: 700; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.ex-badge-pro { display: inline-block; font-size: 11px; font-weight: 700; color: #fff; background: var(--primary); padding: 1px 8px; border-radius: 999px; margin-left: 6px; vertical-align: middle; }
.ex-note { font-size: 13px; color: var(--text-secondary); margin-top: 12px; line-height: 1.5; }
.ex-rc-foot { text-align: center; margin-top: 26px; font-size: 15px; color: var(--text-secondary); }
.ex-rc-foot a { color: var(--primary); font-weight: 600; text-decoration: none; border-bottom: 1px solid currentColor; }
.ex-rc-foot a:hover { opacity: .8; }

/* AI Automation Content — quy trình 5 bước */
.ac-steps { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1100px) { .ac-steps { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 700px)  { .ac-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px)  { .ac-steps { grid-template-columns: 1fr; } }
.ac-step__num { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; font-family: var(--font-mono); font-weight: 800; font-size: 16px; margin-bottom: 12px; }

/* AI Automation Content — bảng giá coming soon */
.ac-plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 768px) { .ac-plans { grid-template-columns: 1fr; } }
.ac-plan { position: relative; background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius-lg); padding: 28px; text-align: center; }
.ac-plan__soon { display: inline-block; font-size: 12px; font-weight: 700; color: var(--amber-deep); background: var(--amber-tint); padding: 3px 12px; border-radius: 999px; margin-bottom: 14px; }
.ac-plan__name { font-size: 19px; font-weight: 700; color: var(--text-primary); margin: 0 0 8px; }
.ac-plan__price { font-family: var(--font-mono); font-size: 20px; font-weight: 800; color: var(--text-secondary); margin-bottom: 12px; }
.ac-plan__desc { font-size: 14px; color: var(--text-secondary); line-height: 1.55; margin: 0; }

/* AI Automation Content — ghi chú tạm tính dưới kết quả calculator */
.ac-assume { font-size: 12.5px; color: var(--text-secondary); margin-top: 10px; line-height: 1.55; }

/* Công nghệ vận hành — SERP Checker Engine flow (light) */
.rc-engine { padding: 84px 0; background: var(--surface-2); }
.rc-flow { display: grid; grid-template-columns: minmax(170px,1fr) auto minmax(0,2.5fr) auto minmax(170px,1fr); gap: 12px; align-items: center; }
.rc-flow__node { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 20px 16px; text-align: center; box-shadow: var(--shadow-sm); }
.rc-flow__ic { width: 46px; height: 46px; border-radius: var(--radius-lg); background: var(--primary-tint); color: var(--primary); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 10px; }
.rc-flow__node h3 { font-size: 15px; font-weight: 700; color: var(--text-primary); margin: 0; }
.rc-flow__node .rc-flow__cap { font-size: 11px; color: var(--text-muted); }
.rc-flow__pills { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.rc-flow__pill { font-size: 11.5px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 7px 8px; color: var(--text-secondary); }
.rc-flow__arrow { color: var(--primary); font-size: 22px; text-align: center; line-height: 1; }
.rc-engine-box { background: #fff; border: 1px solid var(--border-2); border-radius: var(--radius-xl); padding: 20px; box-shadow: var(--shadow-md); }
.rc-engine-box__head { text-align: center; margin-bottom: 14px; }
.rc-engine-badge { display: inline-block; background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .04em; padding: 4px 12px; border-radius: 9999px; }
.rc-engine-box__sub { font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-muted); margin-top: 8px; }
.rc-engine-pre { background: var(--primary-tint); border-radius: var(--radius-lg); padding: 12px 14px; text-align: center; margin-bottom: 14px; }
.rc-engine-pre strong { color: var(--primary); display: block; font-size: 13.5px; }
.rc-engine-pre span { font-size: 12px; color: var(--text-secondary); }
.rc-engine-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.rc-engine-card { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 14px; }
.rc-engine-card__ic { width: 34px; height: 34px; border-radius: 8px; background: var(--primary-tint); color: var(--primary); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 10px; }
.rc-engine-card h4 { font-size: 13.5px; font-weight: 700; color: var(--text-primary); margin: 0 0 4px; }
.rc-engine-card p { font-size: 12px; line-height: 1.5; color: var(--text-secondary); margin: 0; }
@media (max-width: 980px) {
  .rc-flow { grid-template-columns: 1fr; }
  .rc-flow__arrow { transform: rotate(90deg); }
  .rc-engine-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 549px) { .rc-engine-grid { grid-template-columns: 1fr; } }

/* ── Trang Giới thiệu (about) ── */
.ab-stats-sec { padding: 0 0 8px; }
.ab-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.ab-stats .lv2-stat { text-align: center; align-items: center; }
@media (max-width: 768px) { .ab-stats { grid-template-columns: repeat(2, 1fr); } }

.ab-timeline { list-style: none; margin: 8px auto 0; padding: 0; max-width: 760px; }
.ab-tl__item { position: relative; padding: 0 0 30px 34px; border-left: 2px solid var(--border); }
.ab-tl__item:last-child { padding-bottom: 0; border-left-color: transparent; }
.ab-tl__dot { position: absolute; left: -7px; top: 3px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); border: 3px solid #fff; box-shadow: 0 0 0 1px var(--border); }
.ab-tl__item--soon .ab-tl__dot { background: var(--amber); }
.ab-tl__date { display: inline-block; font-family: var(--font-mono); font-size: 12.5px; font-weight: 700; color: var(--primary-dark); background: var(--primary-tint); padding: 3px 10px; border-radius: 999px; margin-bottom: 9px; }
.ab-tl__item--soon .ab-tl__date { color: var(--amber-deep); background: var(--amber-tint); }
.ab-tl__title { font-size: 17px; font-weight: 700; line-height: 1.35; color: var(--text-primary); margin: 0 0 6px; }
.ab-tl__desc { font-size: 14.5px; line-height: 1.65; color: var(--text-secondary); margin: 0; }

.ab-team__role { font-size: 13px; font-weight: 700; color: var(--primary); margin: 0 0 10px; }

/* ── Trang chủ (hub) ── */
.hp-sol { display: flex; flex-direction: column; }
.hp-sol__status { display: inline-flex; align-items: center; gap: 4px; align-self: flex-start; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; margin-bottom: 14px; }
.hp-sol__status--live { color: var(--green-deep); background: var(--green-tint); }
.hp-sol__status--soon { color: var(--amber-deep); background: var(--amber-tint); }
.hp-sol__q { font-size: 13.5px; font-weight: 600; color: var(--primary); margin: 0 0 8px; line-height: 1.4; }
.hp-sol__badge { display: inline-block; align-self: flex-start; font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--text-secondary); background: var(--surface-3); padding: 3px 10px; border-radius: var(--radius-md); margin: 4px 0 14px; }
.hp-sol__bottom { display: flex; justify-content: space-between; align-items: center; margin-top: auto; gap: 10px; }
.hp-sol__bottom .hp-sol__status { margin-bottom: 0; align-self: center; }

.hp-founder { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow-sm); max-width: 1040px; margin: 0 auto; overflow: hidden; }
.hp-founder__grid { display: grid; grid-template-columns: 0.82fr 1.18fr; align-items: stretch; }
.hp-founder__grid > * { min-width: 0; }
.hp-founder__head { background: linear-gradient(165deg, var(--primary-tint) 0%, #fbfcff 100%); border-right: 1px solid var(--border); padding: clamp(28px, 3.4vw, 46px); display: flex; flex-direction: column; justify-content: center; text-align: left; }
.hp-founder__head .lv2-eyebrow { align-self: flex-start; margin: 0; }
.hp-founder__head .lv2-section-title { text-align: left; margin: 14px 0 26px; font-size: clamp(23px, 2.3vw, 30px); line-height: 1.2; }
.hp-founder__cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-start; }
.hp-founder__body { position: relative; padding: clamp(28px, 3.4vw, 46px); display: flex; flex-direction: column; justify-content: center; }
.hp-founder__quote { position: absolute; top: 6px; left: clamp(18px, 3vw, 34px); font-family: Georgia, 'Times New Roman', serif; font-size: 88px; line-height: 1; color: var(--primary); opacity: .12; pointer-events: none; user-select: none; }
.hp-founder__bio { position: relative; font-size: 16px; line-height: 1.75; color: var(--text-secondary); margin: 0; max-width: none; text-align: left; }
@media (max-width: 849px) {
  .hp-founder { max-width: 100%; }
  .hp-founder__grid { display: block; }
  .hp-founder__head, .hp-founder__body { width: 100%; box-sizing: border-box; }
  .hp-founder__head { border-right: none; border-bottom: 1px solid var(--border); }
  .hp-founder__cta .lv2-btn { width: 100%; box-sizing: border-box; }
}

/* ── LOGO KHÁCH HÀNG — infinite marquee ── */
.ab-clients {
  padding: 32px 0 40px;
  overflow: hidden;
  position: relative;
  /* Bỏ viền cứng và nền trắng để lộ lưới chấm phía dưới */
  background: transparent;
}
.ab-clients__label {
  text-align: center;
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-muted);
  margin: 0 0 24px;
}
.ab-clients__track-wrap {
  --marquee-gap: 72px;
  position: relative;
  overflow: hidden;
  /* Giữ mask image nhưng sửa gradient để không bị viền đen trên các máy render lỗi */
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.ab-clients__track {
  display: flex;
  align-items: center;
  gap: var(--marquee-gap);
  /* width = 2 × (20 items × (120px logo + gap)) — JS-free, handled by animation */
  width: max-content;
  animation: ab-marquee 38s linear infinite;
}
.ab-clients__item {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
}
.ab-clients__item img {
  height: 68px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: .50;
  transition: filter .25s, opacity .25s;
}
.ab-clients__track-wrap:hover .ab-clients__item img {
  opacity: .72;
}
.ab-clients__item:hover img {
  filter: grayscale(0);
  opacity: 1;
}

@keyframes ab-marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Dừng animation khi user muốn giảm chuyển động */
@media (prefers-reduced-motion: reduce) {
  .ab-clients__track { animation: none; }
  .ab-clients__track-wrap {
    overflow-x: auto;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .ab-clients__track { width: auto; flex-wrap: wrap; justify-content: center; padding: 0 24px; }
  /* Ẩn bản duplicate */
  .ab-clients__item[aria-hidden="true"] { display: none; }
}

@media (max-width: 549px) {
  .ab-clients { padding: 24px 0 28px; }
  .ab-clients__item img { height: 48px; }
}

/* Extension cross-sell */
.rc-xsell { padding: 0 0 84px; }
.rc-xsell__box { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; background: linear-gradient(120deg, var(--primary-tint), #fff 70%); border: 1px solid var(--border-2); border-radius: var(--radius-xl); padding: 28px 30px; box-shadow: var(--shadow-sm); }
.rc-xsell__t { font-size: 19px; font-weight: 800; color: var(--text-primary); margin: 0 0 6px; }
.rc-xsell__d { font-size: 14px; color: var(--text-secondary); margin: 0; max-width: 560px; }
.rc-xsell .lv2-btn { flex-shrink: 0; }
@media (max-width: 549px) {
  .rc-xsell__box { padding: 22px; } .rc-xsell .lv2-btn { width: 100%; justify-content: center; }
}

/* ── SECTION FOUNDER ── */
.ab-founder { padding: 84px 0; }
.ab-founder__inner {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 56px;
  align-items: flex-start;
  margin-top: 0;
}

/* Cột ảnh */
.ab-founder__photo {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ab-founder__avatar {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  background: var(--surface-2);
  aspect-ratio: 4/5;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ab-founder__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ab-founder__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
  padding: 32px 24px;
  color: var(--text-muted);
  height: 100%;
}
.ab-founder__placeholder svg { color: var(--border-2); }
.ab-founder__placeholder p { font-size: 14px; line-height: 1.6; margin: 0; }
.ab-founder__placeholder small { font-size: 12px; }
.ab-founder__placeholder a { color: var(--primary); }

/* Social links dưới ảnh */
.ab-founder__social {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.ab-founder__social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9999px;
  padding: 7px 14px;
  box-shadow: var(--shadow-xs);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.ab-founder__social-link:hover { border-color: var(--primary); color: var(--primary); }

/* Cột bio */
.ab-founder__name-block { margin-bottom: 22px; }
.ab-founder__name {
  font-family: var(--font-sans);
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 6px;
}
.ab-founder__role {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-tint);
  padding: 4px 12px;
  border-radius: 9999px;
  display: inline-block;
}
.ab-founder__intro {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0 0 16px;
}
.ab-founder__intro strong { color: var(--text-primary); }

/* 3 trụ cột */
.ab-founder__pillars {
  list-style: none;
  margin: 22px 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ab-founder__pillars li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.ab-founder__pillar-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--green-tint);
  color: var(--green-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}
.ab-founder__pillars div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ab-founder__pillars strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}
.ab-founder__pillars span {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-secondary);
}

/* Quote */
.ab-founder__quote {
  margin: 0;
  padding: 18px 22px;
  border-left: 0 !important;
  background: var(--primary-tint);
  border-radius: var(--radius-lg);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-primary);
  font-style: italic;
}
.ab-founder__quote em { font-weight: 700; color: var(--primary); }

/* Responsive */
@media (max-width: 900px) {
  .ab-founder__inner { grid-template-columns: 1fr; gap: 32px; }
  .ab-founder__photo { flex-direction: row; align-items: flex-start; gap: 20px; }
  .ab-founder__avatar { width: 160px; flex-shrink: 0; aspect-ratio: 1/1; }
  .ab-founder__social { flex-direction: column; }
}
@media (max-width: 549px) {
  .ab-founder { padding: 56px 0; }
  .ab-founder__photo { flex-direction: column; }
  .ab-founder__avatar { width: 100%; aspect-ratio: 3/4; max-height: 340px; }
}

/* -- Blog (B�i vi?t) -- */
.lv2-card:hover .lv2-blog-img { transform: scale(1.05); }

/* Pagination */
.lv2-pagination .nav-links { display: flex; gap: 8px; align-items: center; }
.lv2-pagination .page-numbers {
  display: flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 12px;
  border-radius: var(--radius-md); background: white;
  color: var(--text-primary); font-weight: 500;
  text-decoration: none; border: 1px solid rgba(0,0,0,0.05);
  box-shadow: var(--shadow-sm); transition: all 0.3s ease;
}
.lv2-pagination .page-numbers:hover {
  background: var(--primary-tint); color: var(--primary); border-color: transparent;
}
.lv2-pagination .page-numbers.current {
  background: var(--primary); color: white;
  border-color: var(--primary); box-shadow: 0 4px 12px rgba(82,113,255,0.3);
}

/* Tắt lưới sao trang trí ở background trên tất cả các trang */
body {
  background-image: none !important;
  background-color: var(--page-bg);
}

/* Blog Tabs */
.lv2-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 24px;
  border-radius: 99px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: white;
  border: 1.5px solid var(--primary-tint);
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}
.lv2-tab:hover {
  background: var(--primary-tint);
  border-color: var(--primary);
}
.lv2-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(82,113,255,0.3);
}

/* ==========================================================================
   JUSTIFY TEXT - Căn đều 2 bên cho các khối văn bản dài
   ========================================================================== */
.ab-founder__intro,
.lv2-review__text,
.lv2-faq__body p,
.lv2-card__desc,
.lv2-step__desc,
.rc-core__card p {
  text-align: justify;
}

/* Footer Social Icons */
.lv2-social-icon { width: 40px; height: 40px; border-radius: 8px; background: #1e293b; display: flex; align-items: center; justify-content: center; color: #fff !important; transition: all 0.2s; box-shadow: var(--shadow-sm); }
.lv2-social-icon:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-social-wrap { display: flex; gap: 12px; margin-bottom: 20px; }


/* ── Nút chia sẻ MXH cuối bài viết (blog) ── */
.sp-share { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 32px 0 8px; padding-top: 20px; border-top: 1px solid var(--border); }
.sp-share__label { font-weight: 700; color: var(--text-primary); font-size: 14px; }
.sp-share__btn { display: inline-flex; align-items: center; gap: 6px; padding: 10px 16px; min-height: 44px; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--surface); color: var(--text-primary); font-size: 14px; font-weight: 600; text-decoration: none; transition: all .18s ease; }
.sp-share__btn:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }

/* === On-Page SEO/GEO Checklist (tpl-ck) — hero canh giữa đồng bộ + citation links === */
.ck { --ck-line: var(--border,#e2e8f0); --ck-geo:#7c3aed; }

/* Hero: dùng .lv2-hero chung (canh giữa) + stat strip */
.ck-hero { padding: 72px 0 30px; }
.ck-hero .lv2-hero__sub strong { color:var(--primary); }
/* Viên thuốc eyebrow: khớp mẫu badge trắng (nền trắng + viền + bóng mềm) */
.ck-hero .lv2-eyebrow { background:#fff; border:1px solid var(--border); box-shadow:var(--shadow-xs); padding:6px 16px; }
.ck-stats { display:inline-flex; align-items:center; gap:14px; margin:34px auto 0; padding:0; background:transparent; border:0; box-shadow:none; }
.ck-stat { display:flex; flex-direction:column; align-items:center; min-width:90px; }
.ck-stat__n { font-family:var(--font-mono); font-size:34px; font-weight:700; line-height:1; letter-spacing:-.02em; color:var(--text-primary); }
.ck-stat.is-geo .ck-stat__n { color:var(--ck-geo); }
.ck-stat__l { font-size:12px; color:var(--text-muted); margin-top:7px; }
.ck-stat__x { font-family:var(--font-mono); font-size:18px; color:var(--border); padding-bottom:18px; }

/* Nút ghost trong khối CTA nền tối: trong suốt + chữ/viền trắng (fix chữ trắng trên nền trắng) */
.ck-cta-ghost { background:transparent; color:#fff; border:1px solid rgba(255,255,255,.55); }
.ck-cta-ghost:hover { background:rgba(255,255,255,.14); color:#fff; border-color:#fff; }

/* Sticky nav SLIDER: nút trượt 2 bên + mép mờ báo còn nội dung */
.ck-nav { position:sticky; top:0; z-index:30; background:rgba(255,255,255,.94); backdrop-filter:blur(10px); border-top:1px solid var(--ck-line); border-bottom:1px solid var(--ck-line); }
.ck-nav__wrap { position:relative; display:flex; align-items:center; }
.ck-nav__row { display:flex; gap:5px; overflow-x:auto; padding:9px 6px; scrollbar-width:none; scroll-behavior:smooth; scroll-snap-type:x proximity; flex:1;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 28px,#000 calc(100% - 28px),transparent 100%);
          mask-image:linear-gradient(90deg,transparent 0,#000 28px,#000 calc(100% - 28px),transparent 100%); }
.ck-nav__wrap.is-start .ck-nav__row { -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 28px),transparent 100%); mask-image:linear-gradient(90deg,#000 calc(100% - 28px),transparent 100%); }
.ck-nav__wrap.is-end .ck-nav__row { -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 28px); mask-image:linear-gradient(90deg,transparent 0,#000 28px); }
.ck-nav__row::-webkit-scrollbar { display:none; }
.ck-chip { flex-shrink:0; scroll-snap-align:start; display:inline-flex; align-items:center; gap:7px; font-size:13px; font-weight:600; color:var(--text-secondary); padding:7px 12px; border-radius:8px; white-space:nowrap; }
.ck-chip:hover { background:var(--primary-tint); color:var(--primary); }
.ck-chip__i { font-family:var(--font-mono); font-size:11px; color:var(--text-muted); }
.ck-chip.is-geo:hover { background:#efeafe; color:var(--ck-geo); }
.ck-chip.is-geo .ck-chip__i { color:var(--ck-geo); }
.ck-nav__arrow { flex-shrink:0; width:22px; height:22px; margin:0 1px; border:1px solid var(--ck-line); background:#fff; border-radius:50%; color:var(--text-muted); font-size:13px; line-height:1; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:background .15s,color .15s; }
.ck-nav__arrow:hover { background:var(--primary); color:#fff; border-color:var(--primary); }
.ck-nav__wrap.is-start .ck-nav__arrow--prev, .ck-nav__wrap.is-end .ck-nav__arrow--next { opacity:.35; pointer-events:none; }
@media (max-width:680px) { .ck-nav__arrow { display:none; } .ck-nav__row { padding:9px 18px; } }

/* Part header A / B — tối giản: "A. Tiêu đề" + phụ đề nhỏ + kẻ mảnh. KHÔNG card/pill/eyebrow */
.ck-part { display:flex; align-items:baseline; justify-content:space-between; gap:8px 20px; margin:48px 0 14px; padding-bottom:11px; border-bottom:1px solid var(--border); flex-wrap:wrap; }
.ck-part__txt { display:flex; flex-direction:column; gap:1px; }
.ck-part__t { font-size:21px; font-weight:800; letter-spacing:-.01em; color:var(--text-primary); margin:0; line-height:1.25; }
.ck-part__b { color:var(--primary); font-family:var(--font-mono); }
.ck-part.is-geo .ck-part__b { color:var(--ck-geo); }
.ck-part__s { font-size:13px; color:var(--text-secondary); }
.ck-part__n { font-family:var(--font-mono); font-size:12px; color:var(--text-muted); white-space:nowrap; flex-shrink:0; align-self:baseline; }

/* Group */
.ck-g { padding:20px 0; border-top:1px solid var(--ck-line); }
.ck-part + .ck-g { border-top:0; padding-top:6px; } /* tránh kẻ đôi ngay dưới header A/B */
.ck-g__head { display:flex; align-items:baseline; gap:13px; margin:0 0 14px; flex-wrap:wrap; }
.ck-g__idx { font-family:var(--font-mono); font-size:15px; font-weight:700; color:var(--primary); }
.ck-g.is-geo .ck-g__idx { color:var(--ck-geo); }
.ck-g__title { font-size:19px; font-weight:800; letter-spacing:-.01em; color:var(--text-primary); margin:0; }
.ck-g__meta { font-family:var(--font-mono); font-size:12px; color:var(--text-muted); margin-left:auto; }
.ck-g__list { display:flex; flex-direction:column; gap:7px; }

/* Factor / signal leaf accordion */
.ck-fac { border:1px solid var(--ck-line); border-radius:9px; background:#fff; }
.ck-fac__sum { list-style:none; cursor:pointer; display:flex; align-items:center; gap:14px; padding:12px 16px; }
.ck-fac__sum::-webkit-details-marker { display:none; }
.ck-fac__sum:hover { background:var(--surface-2,#f8fafc); }
.ck-fac__name { flex:0 0 38%; font-size:15px; font-weight:600; color:var(--text-primary); line-height:1.35; }
.ck-fac__rule { flex:1; font-size:13px; color:var(--text-muted); line-height:1.4; }
.ck-fac__chev { width:7px; height:7px; border-right:2px solid var(--text-muted); border-bottom:2px solid var(--text-muted); transform:rotate(-45deg); transition:transform .2s; flex-shrink:0; }
.ck-fac[open] .ck-fac__chev { transform:rotate(45deg); }
.ck-fac[open] .ck-fac__sum { border-bottom:1px solid var(--ck-line); }
.ck-fac[open] .ck-fac__name { color:var(--primary); }
.ck-g.is-geo .ck-fac[open] .ck-fac__name { color:var(--ck-geo); }
.ck-fac__body { padding:14px 16px 16px; display:flex; flex-direction:column; gap:12px; }
/* "Vì sao quan trọng" — dòng dẫn */
.ck-fac__why { margin:0; font-size:13.5px; line-height:1.6; color:var(--text-secondary); }
.ck-why-lab { font-weight:700; color:var(--text-primary); }
/* Khối Vấn đề → Cách xử lý → Kết quả: nhãn căn cột + tô màu ngữ nghĩa */
.ck-steps { display:flex; flex-direction:column; gap:10px; padding:13px 15px; background:var(--surface-3,#f1f5f9); border-radius:8px; }
.ck-step { display:flex; gap:12px; margin:0; font-size:13.5px; line-height:1.55; color:var(--text-primary); }
.ck-step__lab { flex-shrink:0; width:84px; font-size:10px; font-weight:700; text-transform:uppercase; letter-spacing:.04em; padding-top:3px; }
.ck-step--p .ck-step__lab { color:var(--amber-deep); }
.ck-step--f .ck-step__lab { color:var(--primary); }
.ck-step--r .ck-step__lab { color:var(--green-deep); }
.ck-g.is-geo .ck-step--f .ck-step__lab { color:var(--ck-geo); }
.ck-step__tx { flex:1; }
.ck-lab { font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:.04em; color:var(--text-muted); margin-right:6px; }
.ck-fac__src { font-size:12.5px; color:var(--text-muted); margin:0; }
.ck-src-link { color:var(--primary); font-weight:600; text-decoration:none; border-bottom:1px solid transparent; }
.ck-src-link:hover { border-bottom-color:currentColor; }
.ck-g.is-geo .ck-src-link { color:var(--ck-geo); }
.ck-src-ic { font-size:11px; margin-left:3px; opacity:.7; }

@media (max-width:680px) {
  .ck-fac__sum { flex-wrap:wrap; gap:4px 12px; }
  .ck-fac__name { flex:1 0 auto; }
  .ck-fac__rule { flex:1 1 100%; order:3; }
}
@media (max-width:549px) {
  .ck-hero { padding:48px 0 28px; }
  .ck-stats { gap:4px; padding:14px 14px; width:100%; }
  .ck-stat { min-width:0; flex:1; }
  .ck-stat__n { font-size:27px; }
  .ck-part { gap:6px 16px; }
  .ck-part__t { font-size:19px; }
  .ck-part__n { flex-basis:100%; text-align:left; }
}