/* ============================================================
   SEO 1-Day Intensive — vlink.asia
   URL: /dao-tao-seo/seo-1day-intensive/
   Load qua: Appearance > Customize > Additional CSS
   hoặc plugin Custom CSS per page (ví dụ: Simple Custom CSS)
   ============================================================ */

/* ── BIẾN MÀU (kế thừa vlink.asia) ── */
.s1di {
  --blue:     #1565C0;
  --blue-dk:  #0D47A1;
  --blue-lt:  #E3F0FF;
  --cyan:     #4FC3F7;
  --navy:     #0A1628;
  --white:    #FFFFFF;
  --text:     #1C2B3A;
  --sub:      #4A5568;
  --muted:    #718096;
  --border:   #E2E8F0;
  --bg:       #F8FAFC;
  --green:    #1B5E20;
  --green-lt: #E8F5E9;
  --font: 'Be Vietnam Pro', sans-serif;
}

/* ── RESET CHUNG ── */
.s1di * { box-sizing: border-box; }
.s1di, .s1di p, .s1di li, .s1di span { font-family: var(--font); }

/* ── LABEL NHỎ ĐẦU SECTION ── */
.s1di-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 12px;
}
.s1di-label::before {
  content: ''; display: inline-block;
  width: 20px; height: 2px;
  background: var(--blue); border-radius: 2px;
}

/* ── HEADING ── */
.s1di-h1 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800; line-height: 1.15;
  color: #0A1628; letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.s1di-h1 em { font-style: normal; color: var(--blue); }
.s1di-h2 {
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 800; line-height: 1.2;
  color: #0A1628; letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.s1di-lead {
  font-size: 16px; color: var(--sub);
  line-height: 1.8; max-width: 640px;
  margin-bottom: 36px;
}

/* ── HERO SECTION ── */
.s1di-hero {
  padding: 72px 0 60px;
  border-bottom: 1px solid var(--border);
}
.s1di-hero-h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800; line-height: 1.15;
  color: #0A1628; letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.s1di-hero-h1 .pain { color: var(--blue); }
.s1di-hero-badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12px; font-weight: 700;
  background: var(--blue); color: #fff;
  padding: 5px 14px; border-radius: 20px;
  margin-bottom: 20px; letter-spacing: 0.05em;
}
.s1di-hero-badge .pulse {
  width: 6px; height: 6px;
  background: #90CAF9; border-radius: 50%;
  animation: s1di-pulse 2s ease-in-out infinite;
}
@keyframes s1di-pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }

.s1di-hero-sub {
  font-size: 17px; color: var(--sub);
  line-height: 1.8; margin-bottom: 32px;
  max-width: 520px;
}
.s1di-hero-sub strong { color: var(--text); font-weight: 600; }

.s1di-tags {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 32px;
}
.s1di-tag {
  font-size: 12px; font-weight: 600;
  color: var(--blue); background: var(--blue-lt);
  padding: 5px 14px; border-radius: 20px;
}

/* HERO STATS */
.s1di-stats {
  display: flex; gap: 36px; flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.s1di-stat-num {
  font-size: 30px; font-weight: 800;
  color: #0A1628; line-height: 1;
}
.s1di-stat-num span { color: var(--blue); }
.s1di-stat-label {
  font-size: 12px; color: var(--muted);
  margin-top: 3px; font-weight: 500;
}

/* ── BUTTONS ── */
.s1di-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font); font-weight: 700; font-size: 14px;
  padding: 13px 28px; border-radius: 6px;
  text-decoration: none; transition: all 0.2s;
  cursor: pointer; border: none;
}
.s1di-btn-primary { background: var(--blue); color: #fff !important; }
.s1di-btn-primary:hover { background: var(--blue-dk); transform: translateY(-1px); }
.s1di-btn-outline {
  background: transparent; color: var(--blue) !important;
  border: 2px solid var(--blue);
}
.s1di-btn-outline:hover { background: var(--blue-lt); }
.s1di-btn-lg { padding: 16px 36px; font-size: 15px; }
.s1di-btn-group { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── PAIN CARDS ── */
.s1di-pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 2 cột thay vì 3 */
  gap: 24px;
}
.s1di-pain-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px; padding: 28px;
  position: relative;
  transition: box-shadow 0.2s, transform 0.2s;
}
.s1di-pain-card:hover {
  box-shadow: 0 4px 24px rgba(21,101,192,0.10);
  transform: translateY(-3px);
}
.s1di-pain-card::before {
  content: attr(data-n);
  position: absolute; top: 20px; right: 20px;
  font-size: 40px; font-weight: 900;
  color: var(--border); line-height: 1;
  user-select: none;
}
.s1di-pain-icon { font-size: 26px; margin-bottom: 14px; display: block; }
.s1di-pain-title {
  font-size: 15px; font-weight: 700;
  color: #0A1628; margin-bottom: 8px;
}
.s1di-pain-desc { font-size: 13px; color: var(--sub); line-height: 1.7; }

/* ── TIMELINE ── */
.s1di-timeline {
  border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
}
.s1di-tl-item {
  display: grid; grid-template-columns: 130px 1fr;
  border-bottom: 1px solid var(--border);
}
.s1di-tl-item:last-child { border-bottom: none; }
.s1di-tl-time {
  padding: 24px 20px;
  background: var(--bg);
  border-right: 1px solid var(--border);
  font-size: 12px; font-weight: 700;
  color: var(--blue); line-height: 1.5;
}
.s1di-tl-phase {
  display: inline-block;
  font-size: 10px; font-weight: 700;
  background: var(--blue); color: #fff;
  padding: 2px 8px; border-radius: 3px;
  letter-spacing: 0.08em; margin-bottom: 6px;
  text-transform: uppercase;
}
.s1di-tl-body { padding: 22px 28px; }
.s1di-tl-title {
  font-size: 15px; font-weight: 700;
  color: #0A1628; margin-bottom: 7px;
}
.s1di-tl-desc { font-size: 13px; color: var(--sub); line-height: 1.7; }
.s1di-tl-output {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 10px; font-size: 12px; font-weight: 600;
  color: var(--green); background: var(--green-lt);
  padding: 4px 12px; border-radius: 4px;
}
.s1di-tl-output::before { content: '↳ Output:'; }

/* ── DELIVER GRID ── */
.s1di-deliver-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.s1di-deliver-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px; padding: 28px 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.s1di-deliver-card:hover {
  border-color: var(--blue);
  box-shadow: 0 2px 12px rgba(21,101,192,0.08);
}
.s1di-deliver-num {
  font-size: 11px; font-weight: 700;
  color: var(--muted); letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.s1di-deliver-icon { font-size: 24px; margin-bottom: 10px; display: block; }
.s1di-deliver-name {
  font-size: 15px; font-weight: 700;
  color: #0A1628; margin-bottom: 8px;
}
.s1di-deliver-desc { font-size: 13px; color: var(--sub); line-height: 1.7; }

/* ── COMPARE TABLE ── */
.s1di-table-wrap { overflow-x: auto; }
table.s1di-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.s1di-table th {
  background: #0A1628; color: #fff;
  padding: 14px 20px; font-size: 13px; font-weight: 700;
  text-align: left;
}
.s1di-table th.featured { background: var(--blue); }
.s1di-table th.center, .s1di-table td.center { text-align: center; }
.s1di-table td {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.s1di-table tr:nth-child(even) td { background: var(--bg); }
.s1di-check { color: #2E7D32; font-weight: 700; }
.s1di-dash { color: #BDBDBD; }
.s1di-part { color: #E65100; font-weight: 600; }

/* ── PRICING ── */
.s1di-pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px; align-items: start;
}
.s1di-price-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 10px; padding: 36px 28px;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
}
.s1di-price-card:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 24px rgba(21,101,192,0.12);
}
.s1di-price-card.featured { border-color: var(--blue); }
.s1di-price-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--blue); color: #fff;
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
  padding: 4px 16px; border-radius: 20px; white-space: nowrap;
  text-transform: uppercase;
}
.s1di-price-tier {
  font-size: 11px; font-weight: 700; color: var(--muted);
  letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 6px;
}
.s1di-price-name {
  font-size: 22px; font-weight: 800;
  color: #0A1628; margin-bottom: 4px;
}
.s1di-price-target {
  font-size: 13px; color: var(--sub);
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px; margin-bottom: 20px; line-height: 1.6;
}
.s1di-price-amount {
  font-size: 34px; font-weight: 900;
  color: #0A1628; line-height: 1;
}
.s1di-price-amount span { font-size: 14px; color: var(--muted); font-weight: 400; }
.s1di-price-note {
  font-size: 11px; color: var(--muted);
  margin-bottom: 24px; margin-top: 4px;
}
.s1di-price-features { list-style: none; margin-bottom: 28px; padding: 0; }
.s1di-price-features li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 13px; color: var(--text);
  padding: 7px 0; border-bottom: 1px solid var(--border);
  line-height: 1.5;
}
.s1di-price-features li:last-child { border-bottom: none; }
.s1di-ic { font-size: 14px; flex-shrink: 0; margin-top: 1px; }

/* ── FAQ ── */
.s1di-faq-item { border-bottom: 1px solid var(--border); }
.s1di-faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; cursor: pointer; gap: 20px; user-select: none;
}
.s1di-faq-q-text {
  font-size: 15px; font-weight: 600;
  color: #0A1628; line-height: 1.5;
}
.s1di-faq-icon {
  font-size: 22px; color: var(--muted);
  flex-shrink: 0; transition: transform 0.2s;
}
.s1di-faq-item.open .s1di-faq-icon {
  transform: rotate(45deg); color: var(--blue);
}
.s1di-faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease;
  font-size: 14px; color: var(--sub); line-height: 1.8;
}
.s1di-faq-item.open .s1di-faq-a {
  max-height: 280px; padding-bottom: 20px;
}

/* ── CTA SECTION ── */
.s1di-cta {
  background: #0A1628; padding: 80px 0;
  text-align: center; position: relative; overflow: hidden;
}
.s1di-cta-h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800; color: #fff;
  line-height: 1.2; margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.s1di-cta-sub {
  font-size: 16px; color: rgba(255,255,255,0.6);
  line-height: 1.8; max-width: 560px;
  margin: 0 auto 40px;
}
.s1di-cta-sub strong { color: #fff; }
.s1di-cta-notice {
  font-size: 12px; color: rgba(255,255,255,0.35);
  margin-top: 20px; display: flex;
  align-items: center; gap: 6px; justify-content: center;
}
.s1di-cta-notice::before {
  content: '●'; font-size: 8px;
  color: #EF5350;
  animation: s1di-pulse 2s infinite;
}
.s1di-btn-white { background: #fff; color: var(--blue) !important; }
.s1di-btn-white:hover { background: var(--blue-lt); }

/* ── TRUST ROW ── */
.s1di-trust-row {
  display: flex; flex-wrap: wrap;
  border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
}
.s1di-trust-item {
  flex: 1; min-width: 160px;
  padding: 28px 24px; text-align: center;
  border-right: 1px solid var(--border);
}
.s1di-trust-item:last-child { border-right: none; }
.s1di-trust-num {
  font-size: 32px; font-weight: 900;
  color: var(--blue); line-height: 1;
}
.s1di-trust-label {
  font-size: 12px; color: var(--muted);
  margin-top: 4px; font-weight: 500;
}

/* ── HIGHLIGHT BOX ── */
.s1di-highlight {
  background: var(--blue-lt);
  border-left: 4px solid var(--blue);
  padding: 16px 20px;
  font-size: 14px; color: var(--text);
  line-height: 1.7; margin: 24px 0;
}

/* ── MOBILE ── */
@media (max-width: 900px) {
  .s1di-pain-grid { grid-template-columns: 1fr 1fr; }
  .s1di-deliver-grid { grid-template-columns: 1fr 1fr; }
  .s1di-pricing-grid { grid-template-columns: 1fr; }
  .s1di-price-card.featured { border-color: var(--blue); }
}
@media (max-width: 600px) {
  .s1di-pain-grid { grid-template-columns: 1fr; }
  .s1di-deliver-grid { grid-template-columns: 1fr; }
  .s1di-tl-item { grid-template-columns: 90px 1fr; }
  .s1di-stats { gap: 24px; }
}


/* ============================================================
   ANSWER-FIRST BLOCK — thêm vào cuối seo-1day-intensive.css
   ============================================================ */

.s1di-af-wrap {
  padding: 0 0 8px;
}

/* Box xanh answer-first */
.s1di-af-box {
  background: #EFF6FF;
  border-left: 4px solid #1565C0;
  border-radius: 0 6px 6px 0;
  padding: 22px 28px;
  max-width: 1300px;
}

/* Label nhỏ "SEO 1-Day Intensive là gì?" */
.s1di-af-label {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 10px;
  font-weight: 700;
  color: #1565C0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.s1di-af-label::before {
  content: '';
  width: 16px;
  height: 2px;
  background: #1565C0;
  display: inline-block;
  border-radius: 2px;
  flex-shrink: 0;
}

/* Đoạn answer-first chính — AI trích từ đây */
.s1di-af-text {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 16px;
  font-weight: 400;
  color: #1C2B3A;
  line-height: 1.8;
  margin: 0;
}
.s1di-af-text a {
  color: #1565C0;
  font-weight: 600;
  text-decoration: none;
}
.s1di-af-text a:hover {
  text-decoration: underline;
}

/* Đoạn differentiate vs Workshop */
.s1di-af-diff {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: #4A5568;
  line-height: 1.7;
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid #DBEAFE;
}

/* Chips entity */
.s1di-af-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
  max-width: 860px;
}
.s1di-af-chip {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}
.s1di-af-chip-blue {
  color: #1565C0;
  background: #E3F0FF;
}
.s1di-af-chip-green {
  color: #1B5E20;
  background: #E8F5E9;
}

/* Mobile */
@media (max-width: 600px) {
  .s1di-af-box { padding: 16px 18px; }
  .s1di-af-text { font-size: 15px; }
}


/* ── COMPARE TABLE (pricing aligned) ── */
.s1di-ct {
  display: grid;
  grid-template-columns: 190px repeat(3, 1fr);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--white);
}
.s1di-ct-cell {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  font-size: 13px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.45;
  font-family: var(--font);
}
.s1di-ct-cell:nth-child(4n) { border-right: none; }
.s1di-ct-label {
  color: var(--muted);
  font-size: 12px;
  background: var(--bg);
}
.s1di-ct-pro { background: var(--blue-lt); }
.s1di-ct-head {
  padding: 20px 14px;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  display: flex;
  font-family: var(--font);
}
.s1di-ct-head:last-child { border-right: none; }
.s1di-ct-tier {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 700;
}
.s1di-ct-name {
  font-size: 18px;
  font-weight: 800;
  color: #0A1628;
}
.s1di-ct-price {
  font-size: 15px;
  font-weight: 700;
  color: #0A1628;
  margin-top: 5px;
}
.s1di-ct-price span {
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
}
.s1di-ct-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 20px;
  background: var(--blue);
  color: var(--white);
  margin-top: 5px;
  display: inline-block;
  letter-spacing: 0.04em;
  font-weight: 700;
}
.s1di-ct-sub .s1di-ct-cell {
  font-size: 12px;
  color: var(--sub);
  font-style: italic;
  padding: 8px 14px;
}
.s1di-ct-section .s1di-ct-cell {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 7px 14px;
  background: #EDF2F7;
  border-right: 1px solid var(--border);
}
.s1di-ct-section .s1di-ct-cell:last-child { border-right: none; }
.s1di-ct-last .s1di-ct-cell { border-bottom: none; }
.s1di-ct-corner { background: var(--bg); }

/* Icons CSS thuần */
.s1di-ic-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  flex-shrink: 0;
}
.s1di-ic-full {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #2e7d32;
  position: relative;
  flex-shrink: 0;
}
.s1di-ic-full::after {
  content: '';
  position: absolute;
  left: 3px; top: 5.5px;
  width: 4px; height: 2px;
  border-left: 1.5px solid #fff;
  border-bottom: 1.5px solid #fff;
  transform: rotate(-45deg) translateY(-2px);
}
.s1di-ic-half {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: linear-gradient(to right, #E65100 50%, transparent 50%);
  border: 1.5px solid #E65100;
  flex-shrink: 0;
}
.s1di-ic-none {
  width: 10px; height: 1.5px;
  background: var(--border);
  border-radius: 2px;
  flex-shrink: 0;
}

@media (max-width: 700px) {
  .s1di-ct { grid-template-columns: 110px repeat(3, 1fr); }
  .s1di-ct-cell { font-size: 11px; padding: 9px 8px; }
  .s1di-ct-head { padding: 14px 8px; }
  .s1di-ct-name { font-size: 14px; }
}