/* =====================================================================
   EXPERT PROFILE — component trang hồ sơ chuyên gia (lucas.html)
   ---------------------------------------------------------------------
   TÁI SỬ DỤNG CHO THƯƠNG HIỆU KHÁC (vd. Go4AI):
   1. Chép file này + khối <main class="xp" ...> trong lucas.html.
   2. Đổi data-brand="gem" → data-brand="go4ai" (hoặc thêm khối token mới
      bên dưới). Toàn bộ màu của component chỉ đọc từ các biến --xp-*.
   3. Sửa 4 chỗ có comment "BRAND SLOT" trong HTML (tên tổ chức, CTA,
      email, logo). Nội dung chuyên môn của Lucas giữ nguyên.
   Phụ thuộc duy nhất vào go4ai.css: .padding-global, .container, .section,
   .head/.chips/.title--l/.head__sub (hệ section-header chuẩn §2b).
   Breakpoint chỉ dùng thang chuẩn: 640 · 900 · 1024.
   ===================================================================== */

.xp {
  --xp-brand:   #008098;  /* --gem-teal   */
  --xp-bright:  #10c0e0;  /* --gem-accent */
  --xp-light:   #38a0b8;  /* --gem-teal-l */
  --xp-ink:     #0a1620;  /* --gem-ink    */
  --xp-soft:    #e6f5f8;  /* --gem-soft   */
  --xp-paper:   #f4f7f8;  /* --gem-gray-bg*/
  --xp-line:    #d8e2e1;
  --xp-muted:   #556c68;
  --xp-radius:  1rem;
  font-family: 'Archivo', Arial, sans-serif;
}

/* Token Go4AI — ⚠️ CHƯA CHỐT: #10c19c lấy từ gradient sóng footer hiện có,
   cần owner xác nhận bảng màu Go4AI chính thức trước khi dùng. */
.xp[data-brand="go4ai"] {
  --xp-brand:  #0f9d7f;
  --xp-bright: #10c19c;
  --xp-light:  #3fbfa3;
  --xp-soft:   #e5f7f2;
}

.xp .section--gray { background: var(--xp-paper); }
.xp .section--dark { background: var(--xp-ink); }
.xp .chips { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .8125rem; letter-spacing: .04em; color: var(--xp-brand); }
.xp .section--dark .chips { color: var(--xp-bright); }
.xp .head { max-width: 50rem; margin-bottom: 3rem; }
.xp .head__title { text-wrap: balance; }
.xp .head__sub { max-width: 42rem; }

/* ---------- buttons (không dùng .button mặc định vì nó màu coral) */
.xp-btns { display: flex; flex-wrap: wrap; gap: .75rem; }
.xp-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .95rem 1.75rem; border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; font-size: 1rem; line-height: 1.2; text-align: center;
  background: var(--xp-brand); color: #fff;
  transition: background-color .25s ease, border-color .25s ease, transform .25s ease;
}
.xp-btn:hover { background: var(--xp-ink); transform: translateY(-1px); }
.xp-btn--ghost { background: transparent; color: var(--xp-ink); border-color: var(--xp-line); }
.xp-btn--ghost:hover { background: #fff; border-color: var(--xp-ink); }
.section--dark .xp-btn { background: var(--xp-bright); color: var(--xp-ink); }
.section--dark .xp-btn:hover { background: #fff; }
.section--dark .xp-btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.section--dark .xp-btn--ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.xp-btn:focus-visible { outline: 2px solid var(--xp-bright); outline-offset: 3px; }

.xp-mono { font-family: 'Azeret Mono', Arial, sans-serif; letter-spacing: .02em; }

/* ============================================================ 01 HERO */
.xp-hero { padding-top: 7.5rem; }
.xp-hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: center; }
.xp-hero__grid > * { min-width: 0; }
.xp-hero__eyebrow { display: inline-block; font-size: .8125rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--xp-brand); }
.xp-hero__title { margin: 1rem 0 1.25rem; font-size: clamp(2.25rem, 4.6vw, 3.75rem); line-height: 1.08; font-weight: 600; letter-spacing: -.035em; color: var(--xp-ink); text-wrap: balance; }
.xp-hero__title em { font-style: normal; color: var(--xp-brand); }
.xp-hero__sub { font-size: 1.1875rem; line-height: 1.55; color: var(--xp-muted); max-width: 36rem; }
.xp-hero__sub strong { color: var(--xp-ink); font-weight: 600; }
.xp-chain { display: flex; flex-wrap: wrap; align-items: center; gap: .375rem; margin: 1.75rem 0 2rem; padding: 0; list-style: none; }
.xp-chain li { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .75rem; font-weight: 500; padding: .375rem .625rem; border-radius: 6px; background: var(--xp-soft); color: var(--xp-ink); }
.xp-chain li.is-arrow { background: none; padding: 0; color: var(--xp-light); }
.xp-hero__who { display: flex; align-items: center; gap: .875rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--xp-line); }
.xp-hero__who b { display: block; font-size: 1.0625rem; color: var(--xp-ink); }
.xp-hero__who span { font-size: .9375rem; color: var(--xp-muted); }
.xp-hero__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--xp-bright); box-shadow: 0 0 0 5px var(--xp-soft); flex: none; }

.xp-hero__media { position: relative; }
.xp-frame { position: relative; border-radius: 1.5rem; overflow: hidden; background: var(--xp-soft); aspect-ratio: 4 / 5; }
.xp-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.xp-artifacts { position: absolute; inset: auto -1rem 1.5rem auto; display: grid; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.xp-artifacts li {
  display: flex; align-items: center; gap: .625rem; padding: .625rem .875rem; border-radius: .75rem;
  background: rgba(255,255,255,.96); box-shadow: 0 10px 30px rgba(10,22,32,.16);
  font-size: .875rem; font-weight: 600; color: var(--xp-ink);
}
.xp-artifacts li span { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .6875rem; color: var(--xp-brand); }
.xp-hero__quote { position: absolute; left: -1.5rem; top: 1.5rem; max-width: 15rem; padding: 1rem 1.125rem; border-radius: .875rem; background: var(--xp-ink); color: #fff; font-size: .9375rem; line-height: 1.45; box-shadow: 0 14px 34px rgba(10,22,32,.28); }

/* ======================================================= 02 PROOF BAR */
.xp-proof { padding: 3.5rem 0; }
.xp-proof__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.12); border-radius: var(--xp-radius); overflow: hidden; }
.xp-proof__item { background: var(--xp-ink); padding: 1.75rem 1.5rem; }
.xp-proof__num { display: block; font-size: clamp(2rem, 3.4vw, 2.75rem); font-weight: 600; letter-spacing: -.03em; line-height: 1; color: var(--xp-bright); }
.xp-proof__label { display: block; margin-top: .75rem; font-weight: 600; color: #fff; }
.xp-proof__note { display: block; margin-top: .25rem; font-size: .875rem; color: #bdccc9; line-height: 1.45; }
.xp-proof__caption { margin-top: 1.25rem; font-size: .8125rem; color: #889e9a; }

/* =================================================== 03 DIFFERENCE */
.xp-compare { border: 1px solid var(--xp-line); border-radius: var(--xp-radius); overflow: hidden; background: #fff; }
.xp-compare__row { display: grid; grid-template-columns: 1fr 1fr; }
.xp-compare__row + .xp-compare__row { border-top: 1px solid var(--xp-line); }
.xp-compare__row > div { padding: 1.05rem 1.5rem; font-size: 1rem; line-height: 1.45; }
.xp-compare__row > div:first-child { color: var(--xp-muted); }
.xp-compare__row > div:last-child { background: var(--xp-soft); color: var(--xp-ink); font-weight: 600; border-left: 3px solid var(--xp-brand); }
.xp-compare__row--head > div { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .75rem !important; letter-spacing: .06em; text-transform: uppercase; font-weight: 600; }
.xp-compare__row--head > div:first-child { background: var(--xp-paper); }
.xp-compare__row--head > div:last-child { background: var(--xp-brand); color: #fff; }

.xp-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 2.5rem; }
.xp-values > article { padding: 1.5rem; border-radius: var(--xp-radius); border: 1px solid var(--xp-line); background: #fff; }
.xp-values h3 { font-size: 1.1875rem; font-weight: 600; color: var(--xp-ink); margin: .5rem 0; letter-spacing: -.01em; }
.xp-values p { color: var(--xp-muted); line-height: 1.55; }
.xp-values .xp-mono { font-size: .75rem; color: var(--xp-brand); }

/* ======================================================= 04 METHOD */
.xp-steps { display: grid; grid-template-columns: repeat(7, 1fr); gap: .75rem; margin: 0; padding: 0; list-style: none; counter-reset: xp; }
.xp-steps > li { position: relative; padding: 1.25rem 1rem 1.375rem; border-radius: var(--xp-radius); background: #fff; border: 1px solid var(--xp-line); min-width: 0; }
.xp-steps > li::after { content: "→"; position: absolute; right: -.7rem; top: 1.35rem; font-family: 'Azeret Mono', Arial, sans-serif; color: var(--xp-light); font-size: .875rem; z-index: 1; }
.xp-steps > li:last-child::after { display: none; }
.xp-steps .xp-mono { font-size: .75rem; color: var(--xp-brand); font-weight: 600; }
.xp-steps h3 { margin: .5rem 0 .5rem; font-size: 1.0625rem; font-weight: 600; color: var(--xp-ink); line-height: 1.25; }
.xp-steps p { font-size: .875rem; line-height: 1.5; color: var(--xp-muted); }
.xp-steps > li.is-key { background: var(--xp-ink); border-color: var(--xp-ink); }
.xp-steps > li.is-key h3 { color: #fff; }
.xp-steps > li.is-key p { color: #bdccc9; }
.xp-steps > li.is-key .xp-mono { color: var(--xp-bright); }

.xp-scale { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-top: 2rem; padding: 1.25rem 1.5rem; border-radius: var(--xp-radius); border: 1px dashed var(--xp-light); background: #fff; }
.xp-scale b { margin-right: .5rem; color: var(--xp-ink); }
.xp-scale span { font-size: .9375rem; color: var(--xp-ink); }
.xp-scale i { font-style: normal; font-family: 'Azeret Mono', Arial, sans-serif; color: var(--xp-light); }
.xp-source { margin-top: 1.25rem; font-size: .875rem; color: var(--xp-muted); max-width: 52rem; }
.xp-source a { color: var(--xp-brand); text-decoration: underline; text-underline-offset: 2px; }

/* ======================================================= 05 ROOM */
.xp-room { display: grid; grid-template-columns: .85fr 1.15fr; gap: 3.5rem; align-items: start; }
.xp-room > * { min-width: 0; }
.xp-room__media .xp-frame { aspect-ratio: 4 / 3; }
.xp-room__quote { margin-top: 1.5rem; padding-left: 1.25rem; border-left: 3px solid var(--xp-brand); font-size: 1.125rem; line-height: 1.5; color: var(--xp-ink); }
.xp-room__quote span { display: block; color: var(--xp-muted); }
.xp-room__list { margin: 0; padding: 0; list-style: none; }
.xp-room__list li { display: grid; grid-template-columns: 3.25rem 1fr; gap: 1rem; padding: 1.25rem 0; border-bottom: 1px solid var(--xp-line); }
.xp-room__list li:first-child { padding-top: 0; }
.xp-room__list .xp-mono { font-size: .8125rem; font-weight: 600; color: var(--xp-brand); padding-top: .2rem; }
.xp-room__list h3 { font-size: 1.1875rem; font-weight: 600; color: var(--xp-ink); margin-bottom: .25rem; }
.xp-room__list p { color: var(--xp-muted); line-height: 1.55; }

/* ======================================================= 06 CASES */
.xp-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.xp-case { display: flex; flex-direction: column; border-radius: var(--xp-radius); background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12); overflow: hidden; min-width: 0; }
.xp-case__kpi { padding: 1.5rem 1.5rem 1.25rem; border-bottom: 1px solid rgba(255,255,255,.12); }
.xp-case__kpi b { display: block; font-size: 2.5rem; font-weight: 600; line-height: 1; letter-spacing: -.03em; color: var(--xp-bright); }
.xp-case__kpi span { display: block; margin-top: .5rem; font-size: .9375rem; color: #fff; }
.xp-case__body { padding: 1.25rem 1.5rem 1.5rem; display: grid; gap: 1rem; flex: 1; }
.xp-case__tag { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .6875rem; letter-spacing: .06em; text-transform: uppercase; color: #889e9a; }
.xp-case h3 { font-size: 1.25rem; font-weight: 600; color: #fff; letter-spacing: -.01em; }
.xp-case dl { display: grid; gap: .75rem; margin: 0; }
.xp-case dt { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .6875rem; letter-spacing: .06em; text-transform: uppercase; color: var(--xp-bright); }
.xp-case dd { margin: .2rem 0 0; font-size: .9375rem; line-height: 1.55; color: #bdccc9; }
.xp-case__note { margin-top: 1.5rem; font-size: .8125rem; color: #889e9a; }

/* ======================================================= 07 ASSETS */
.xp-assets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 0; padding: 0; list-style: none; }
.xp-assets li { padding: 1.25rem 1.375rem; border-radius: var(--xp-radius); background: #fff; border: 1px solid var(--xp-line); min-width: 0; }
.xp-assets .xp-mono { font-size: .75rem; color: var(--xp-brand); font-weight: 600; }
.xp-assets h3 { margin: .375rem 0 .25rem; font-size: 1.0625rem; font-weight: 600; color: var(--xp-ink); }
.xp-assets p { font-size: .9375rem; line-height: 1.5; color: var(--xp-muted); }
.xp-statement { margin-top: 2.5rem; padding: 2rem 2.25rem; border-radius: var(--xp-radius); background: var(--xp-ink); color: #fff; display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; }
.xp-statement p { font-size: clamp(1.25rem, 2.2vw, 1.625rem); line-height: 1.35; font-weight: 500; letter-spacing: -.02em; }
.xp-statement p span { color: var(--xp-bright); }

/* ======================================================= 08 EVIDENCE */
.xp-evidence { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.xp-ev { display: flex; flex-direction: column; gap: .5rem; padding: 1.5rem; border-radius: var(--xp-radius); border: 1px solid var(--xp-line); background: #fff; transition: border-color .25s ease, transform .25s ease; min-width: 0; }
a.xp-ev:hover { border-color: var(--xp-brand); transform: translateY(-2px); }
.xp-ev .xp-mono { font-size: .6875rem; letter-spacing: .06em; text-transform: uppercase; color: var(--xp-brand); }
.xp-ev h3 { font-size: 1.125rem; font-weight: 600; color: var(--xp-ink); }
.xp-ev p { font-size: .9375rem; line-height: 1.5; color: var(--xp-muted); }
.xp-ev__go { margin-top: auto; padding-top: .5rem; font-size: .875rem; font-weight: 600; color: var(--xp-brand); }
.xp-press { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem 2.5rem; margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--xp-line); }
.xp-press img { height: 28px; width: auto; opacity: .7; filter: grayscale(1); transition: opacity .2s, filter .2s; }
.xp-press a:hover img { opacity: 1; filter: none; }
.xp-creds { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.xp-creds li { padding: .4rem .75rem; border-radius: 999px; background: var(--xp-paper); font-size: .8125rem; color: var(--xp-muted); }

/* ================================================= 09 ROADMAP + CTA */
.xp-road { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 3.5rem; padding: 0; list-style: none; }
.xp-road li { flex: 1 1 0; min-width: 8.5rem; padding: 1rem; border-radius: .75rem; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.03); }
.xp-road .xp-mono { font-size: .6875rem; color: var(--xp-bright); }
.xp-road b { display: block; margin-top: .375rem; font-size: .9375rem; font-weight: 600; color: #fff; line-height: 1.3; }
.xp-road li.is-now { border-color: var(--xp-bright); background: rgba(16,192,224,.1); }
.xp-cta { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; padding: 2.5rem; border-radius: 1.5rem; background: #fff; color: var(--xp-ink); }
.xp-cta > * { min-width: 0; }
.xp-cta h2 { font-size: clamp(1.75rem, 3vw, 2.375rem); line-height: 1.15; font-weight: 600; letter-spacing: -.03em; text-wrap: balance; }
.xp-cta__lead { margin: 1rem 0 1.75rem; color: var(--xp-muted); font-size: 1.0625rem; line-height: 1.55; }
.xp-cta__micro { margin-top: 1rem; font-size: .875rem; color: var(--xp-muted); }
.xp-cta__brief { padding: 1.5rem; border-radius: var(--xp-radius); background: var(--xp-paper); }
.xp-cta__brief h3 { font-family: 'Azeret Mono', Arial, sans-serif; font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; color: var(--xp-brand); margin-bottom: 1rem; }
.xp-cta__brief ol { margin: 0; padding: 0; list-style: none; counter-reset: b; display: grid; gap: .75rem; }
.xp-cta__brief li { counter-increment: b; display: grid; grid-template-columns: 1.75rem 1fr; gap: .5rem; font-size: .9375rem; line-height: 1.45; }
.xp-cta__brief li::before { content: counter(b, decimal-leading-zero); font-family: 'Azeret Mono', Arial, sans-serif; font-size: .75rem; color: var(--xp-brand); padding-top: .15rem; }
.xp .section--dark .xp-cta .xp-btn { background: var(--xp-brand); color: #fff; }
.xp .section--dark .xp-cta .xp-btn:hover { background: var(--xp-ink); }
.xp .section--dark .xp-cta .xp-btn--ghost { background: transparent; color: var(--xp-ink); border-color: var(--xp-line); }
.xp .section--dark .xp-cta .xp-btn--ghost:hover { border-color: var(--xp-ink); }

/* ======================================================= RESPONSIVE */
@media (max-width: 1200px) {
  .xp-steps { grid-template-columns: repeat(4, 1fr); }
  .xp-steps > li::after { display: none; }
}
@media (max-width: 1024px) {
  .xp-hero__grid, .xp-room, .xp-cta { grid-template-columns: 1fr; gap: 2.5rem; }
  .xp-hero__media { max-width: 34rem; }
  .xp-frame { aspect-ratio: 4 / 3; }
  .xp-proof__grid { grid-template-columns: repeat(2, 1fr); }
  .xp-cases, .xp-evidence, .xp-values { grid-template-columns: repeat(2, 1fr); }
  .xp-assets { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .xp-hero { padding-top: 5.5rem; }
  .xp-hero__sub { font-size: 1.0625rem; }
  .xp-artifacts { right: .75rem; bottom: .75rem; }
  .xp-artifacts li:nth-child(n+4) { display: none; }
  .xp-hero__quote { position: static; max-width: none; margin-top: 1rem; }
  .xp-proof__grid, .xp-cases, .xp-evidence, .xp-values, .xp-assets, .xp-steps { grid-template-columns: 1fr; }
  .xp-compare__row { grid-template-columns: 1fr; }
  .xp-compare__row > div:last-child { border-left: 0; border-top: 1px solid var(--xp-line); }
  .xp-compare__row > div:first-child { padding-bottom: .75rem; }
  .xp-compare__row > div:first-child::before { content: "Phổ biến: "; font-weight: 600; }
  .xp-compare__row--head { display: none; }
  .xp-statement { grid-template-columns: 1fr; padding: 1.5rem; }
  .xp-cta { padding: 1.5rem; }
  .xp-road li { flex-basis: 100%; }
  .xp-btns .xp-btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .xp-btn, .xp-ev { transition: none; }
}

/* §2: Azeret Mono chỉ cho ký tự ASCII. Các nhãn có chữ Việt có dấu → Archivo. */
.xp .chips, .xp-compare__row--head > div, .xp-case dt, .xp-cta__brief h3, .xp-ev > .xp-mono {
  font-family: 'Archivo', Arial, sans-serif;
  font-weight: 600;
  letter-spacing: .06em;
}

/* =====================================================================
   NEEDS SURVEY — khao-sat-nhu-cau-ai.html (dùng chung token --xp-*)
   ===================================================================== */
.xs-intro { padding-top: 7.5rem; padding-bottom: 3.5rem; }
.xs-intro__grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 3.5rem; align-items: end; }
.xs-intro__grid > * { min-width: 0; }
.xs-flow { display: grid; gap: .375rem; margin: 0; padding: 0; list-style: none; }
.xs-flow li { display: flex; align-items: center; gap: .75rem; padding: .55rem .875rem; border-radius: .625rem; background: var(--xp-soft); font-size: .9375rem; font-weight: 600; color: var(--xp-ink); }
.xs-flow .xp-mono { font-size: .6875rem; color: var(--xp-brand); }
.xs-body { padding-top: 3.5rem; }

.xs-form, .xs-done { max-width: 56rem; margin: 0 auto; padding: 2.25rem; border-radius: 1.5rem; background: #fff; border: 1px solid var(--xp-line); }
.xs-form[hidden], .xs-done[hidden] { display: none; }
.xs-progress { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; margin: 0 0 2rem; padding: 0; list-style: none; }
.xs-progress li { padding-top: .75rem; border-top: 3px solid var(--xp-line); font-size: .875rem; font-weight: 600; color: var(--xp-muted); }
.xs-progress li .xp-mono { display: block; font-size: .6875rem; margin-bottom: .125rem; }
.xs-progress li.is-done { border-color: var(--xp-light); color: var(--xp-ink); }
.xs-progress li.is-active { border-color: var(--xp-brand); color: var(--xp-brand); }

.xs-step { border: 0; margin: 0; padding: 0; min-width: 0; }
.xs-step[hidden], .xs-tier[hidden] { display: none; }
.xs-step__title { font-size: 1.5rem; font-weight: 600; letter-spacing: -.02em; color: var(--xp-ink); margin-bottom: 1.5rem; padding: 0; }

.xs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.25rem; }
.xs-field { display: grid; gap: .375rem; min-width: 0; }
.xs-field--full { grid-column: 1 / -1; }
.xs-field--inline { margin-top: .875rem; max-width: 22rem; }
.xs-field > span { font-size: .9375rem; font-weight: 600; color: var(--xp-ink); }
.xs-field > span b { color: var(--xp-brand); }
.xs-field input, .xs-field select, .xs-field textarea {
  width: 100%; padding: .75rem .875rem; border: 1px solid var(--xp-line); border-radius: .625rem;
  background: #fff; font: inherit; font-size: 1rem; color: var(--xp-ink);
}
.xs-field textarea { resize: vertical; }
.xs-field input:focus, .xs-field select:focus, .xs-field textarea:focus { outline: 2px solid var(--xp-bright); outline-offset: 1px; border-color: var(--xp-brand); }
.xs-hint { margin-top: .875rem; font-size: .875rem; color: var(--xp-muted); }

.xs-q { padding: 1.25rem 0; border-bottom: 1px solid var(--xp-line); }
.xs-q:first-of-type { padding-top: 0; }
.xs-q__label { font-weight: 600; color: var(--xp-ink); margin-bottom: .875rem; line-height: 1.4; }
.xs-q__label em { font-style: normal; font-weight: 500; font-size: .8125rem; color: var(--xp-brand); margin-left: .375rem; white-space: nowrap; }
.xs-opts { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.xs-opts--row { display: flex; flex-wrap: wrap; }
.xs-opts label { position: relative; display: block; cursor: pointer; }
.xs-opts input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.xs-opts label > span {
  display: flex; align-items: center; gap: .625rem; height: 100%; padding: .7rem .875rem;
  border: 1px solid var(--xp-line); border-radius: .625rem; font-size: .9375rem; line-height: 1.35; color: var(--xp-ink);
  transition: border-color .15s ease, background-color .15s ease;
}
.xs-opts label > span::before {
  content: ""; flex: none; width: 1.05rem; height: 1.05rem; border: 1.5px solid var(--xp-light); border-radius: .3rem; background: #fff;
}
.xs-opts input[type="radio"] + span::before { border-radius: 50%; }
.xs-opts label:hover > span { border-color: var(--xp-light); }
.xs-opts input:checked + span { border-color: var(--xp-brand); background: var(--xp-soft); font-weight: 600; }
.xs-opts input:checked + span::before { background: var(--xp-brand); border-color: var(--xp-brand); box-shadow: inset 0 0 0 2.5px #fff; }
.xs-opts input:focus-visible + span { outline: 2px solid var(--xp-bright); outline-offset: 2px; }
.xs-opts label.is-locked { cursor: not-allowed; }
.xs-opts label.is-locked > span { opacity: .45; }

.xs-tier { margin-top: 1.25rem; padding: 1.25rem 1.25rem .25rem; border-radius: var(--xp-radius); background: var(--xp-paper); }
.xs-tier .xs-q:last-child { border-bottom: 0; }
.xs-tier__title { font-weight: 600; color: var(--xp-brand); margin-bottom: 1rem; }

.xs-consent { display: flex; gap: .75rem; align-items: flex-start; margin-top: 1.5rem; font-size: .9375rem; line-height: 1.5; color: var(--xp-muted); cursor: pointer; }
.xs-consent input { width: 1.1rem; height: 1.1rem; margin-top: .2rem; accent-color: var(--xp-brand); flex: none; }
.xs-consent a { color: var(--xp-brand); text-decoration: underline; }

.xs-notice { margin-top: 1.5rem; padding: .875rem 1rem; border-radius: .625rem; background: var(--xp-soft); color: var(--xp-ink); font-size: .9375rem; }
.xs-notice[hidden] { display: none; }
.xs-notice.is-error { background: #fbeeec; color: #8a2a1e; }

.xs-nav { display: flex; align-items: center; gap: .75rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--xp-line); }
.xs-nav__count { margin-left: auto; font-size: .8125rem; color: var(--xp-muted); }
.xs-nav button[hidden] { display: none; }
.xs-nav .xp-btn { cursor: pointer; font-family: inherit; }
.xs-nav .xp-btn:disabled { opacity: .6; cursor: wait; }

.xs-done:focus { outline: none; }
.xs-done__title { margin: .75rem 0 1rem; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 600; line-height: 1.2; letter-spacing: -.02em; color: var(--xp-ink); }
.xs-done__text { color: var(--xp-muted); line-height: 1.6; margin-bottom: 1.5rem; max-width: 40rem; }

@media (max-width: 900px) {
  .xs-intro__grid { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 640px) {
  .xs-intro { padding-top: 5.5rem; }
  .xs-form, .xs-done { padding: 1.25rem; border-radius: 1rem; }
  .xs-progress li { font-size: 0; }
  .xs-progress li .xp-mono { font-size: .75rem; margin: 0; }
  .xs-grid, .xs-opts { grid-template-columns: 1fr; }
  .xs-nav { flex-wrap: wrap; }
  .xs-nav .xp-btn { flex: 1 1 auto; width: auto; }
  .xs-nav__count { order: -1; width: 100%; margin: 0; }
}

/* PROVE Framework: 5 bước */
.xp-steps--5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1024px) { .xp-steps--5 { grid-template-columns: 1fr 1fr; } .xp-steps--5 > li::after { display: none; } }
@media (max-width: 640px) { .xp-steps--5 { grid-template-columns: 1fr; } }


/* =====================================================================
   LUCAS v2 — trình bày lại trang hồ sơ (2026-09-25). Phạm vi: body.lucas-page
   (trang khảo sát dùng chung file này — không bị ảnh hưởng).
   Đo trước khi sửa (1440px): H2 rớt 3 dòng · ảnh khán giả gắn tên Lucas · số ~70%/1.000+ lặp 2 lần ·
   ca 1 có 8 dòng, ca 2–3 có 3 dòng · nhãn chữ Việt dùng Azeret Mono · nhãn section bắt đầu từ "03".
   ===================================================================== */
.lucas-page .xp .head { max-width: 56rem; margin-bottom: 2.5rem; }
.lucas-page .xp .head__sub { max-width: 44rem; }
.lucas-page .xp-label { display: inline-block; font-family: "Archivo", Arial, sans-serif; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--xp-brand); }
.lucas-page .xp-num { font-family: "Azeret Mono", Arial, sans-serif; font-size: .8125rem; font-weight: 600; color: var(--xp-brand); }
.lucas-page .section--dark .xp-num { color: var(--xp-bright); }

/* Hero */
.lucas-page .xp-hero { padding-top: 5rem; }
.lucas-page .xp-hero__grid { grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: 4rem; }
.lucas-page .xp-hero__title { margin: .75rem 0 .5rem; font-size: clamp(2.75rem, 6vw, 5rem); line-height: 1.02; }
.lucas-page .xp-hero__lead { margin: 0 0 1rem; max-width: 36rem; font-size: clamp(1.375rem, 2.3vw, 1.875rem); line-height: 1.28; font-weight: 500; letter-spacing: -.02em; color: var(--xp-ink); text-wrap: balance; }
.lucas-page .xp-hero__lead em { font-style: normal; color: var(--xp-brand); }
.lucas-page .xp-hero__sub { margin-bottom: 2rem; }
.xp-card { display: grid; gap: 1.5rem; padding: 2rem; border-radius: 1.5rem; background: linear-gradient(160deg, var(--xp-soft) 0%, #fff 70%); border: 1px solid #cfe9ef; box-shadow: 0 18px 44px rgba(10, 22, 32, .07); }
.xp-card__top { display: flex; align-items: center; gap: 1rem; }
.xp-card__mono { flex: none; width: 4.5rem; height: 4.5rem; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(135deg, var(--xp-brand), var(--xp-ink)); color: #fff; font-size: 1.5rem; font-weight: 600; }
.xp-card__name { margin: 0; font-size: 1.25rem; font-weight: 600; color: var(--xp-ink); }
.xp-card__alias { margin: .125rem 0 0; font-size: .9375rem; color: var(--xp-muted); }
.xp-card__roles { margin: 0; padding: 0; list-style: none; }
.xp-card__roles li { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem 0; border-top: 1px solid var(--xp-line); font-size: .9375rem; }
.xp-card__roles b { font-weight: 600; color: var(--xp-ink); }
.xp-card__roles span { color: var(--xp-muted); text-align: right; }
.xp-card__quote { margin: 0; padding: 1rem 1.125rem; border-radius: .875rem; background: var(--xp-ink); color: #fff; font-size: .9375rem; line-height: 1.5; }

/* Vì sao khác: bảng so sánh + 3 giá trị đặt cạnh nhau */
.xp-diff { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.lucas-page .xp-diff .xp-values { grid-template-columns: 1fr; margin-top: 0; gap: 1rem; }
.lucas-page .xp-values > article { padding: 1.25rem 1.5rem; }
.lucas-page .xp-values h3 { margin: .375rem 0 .375rem; font-size: 1.125rem; }
.lucas-page .xp-values p { font-size: .9375rem; }
.lucas-page .xp-compare__row > div { padding: 1rem 1.5rem; }

/* PROVE: 5 bước cùng một kiểu (trước: 2 thẻ tối ngẫu nhiên) */
.xp-prove { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0; list-style: none; }
.xp-prove > li { position: relative; min-width: 0; padding: 1.25rem 1.25rem 1.5rem; border-radius: 1rem; background: #fff; border: 1px solid var(--xp-line); }
.xp-prove > li:not(:last-child)::after { content: ""; position: absolute; top: 2.625rem; right: -1rem; width: 1rem; height: 2px; background: var(--xp-light); }
.xp-prove__l { display: grid; place-items: center; width: 2.75rem; height: 2.75rem; border-radius: .75rem; background: var(--xp-brand); color: #fff; font-size: 1.25rem; font-weight: 600; }
.xp-prove h3 { margin: .875rem 0 .375rem; font-size: 1.0625rem; font-weight: 600; line-height: 1.3; color: var(--xp-ink); }
.xp-prove p { margin: 0; font-size: .9375rem; line-height: 1.5; color: var(--xp-muted); }
.lucas-page .xp-scale span { font-size: .9375rem; }

/* Trong lớp học */
.lucas-page .xp-room { grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 4rem; align-items: center; }
.lucas-page .xp-room__media .head { margin-bottom: 1.75rem; }
.lucas-page .xp-room__list .xp-num { padding-top: .2rem; }
.lucas-page .xp-room__quote { margin-top: 1.75rem; }

/* Ứng dụng: 3 ca cùng một khung */
.lucas-page .xp-case { gap: .875rem; padding: 1.75rem; }
.lucas-page .xp-case__tag { font-family: "Archivo", Arial, sans-serif; font-size: .75rem; font-weight: 700; letter-spacing: .08em; color: #889e9a; }
.lucas-page .xp-case h3 { margin: 0; }
.lucas-page .xp-case__kpi { display: flex; flex-wrap: wrap; align-items: baseline; gap: .625rem; margin: .25rem 0 .375rem; padding: .875rem 1rem; border: 1px solid rgba(16, 192, 224, .25); border-radius: .75rem; background: rgba(16, 192, 224, .08); }
.lucas-page .xp-case__kpi b { font-size: 1.75rem; }
.lucas-page .xp-case__kpi span { margin: 0; font-size: .875rem; }
.lucas-page .xp-case dt { font-size: .75rem; }

/* Tài sản: 3 nhóm */
.lucas-page .xp-assets { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.xp-assets__group { padding: 1.5rem; border-radius: 1rem; background: #fff; border: 1px solid var(--xp-line); }
.xp-assets__group h3 { display: flex; align-items: center; gap: .625rem; margin: 0 0 1rem; font-size: 1.0625rem; font-weight: 600; color: var(--xp-ink); }
.xp-assets__group h3 .xp-num { display: grid; place-items: center; width: 1.75rem; height: 1.75rem; border-radius: .5rem; background: var(--xp-soft); }
.xp-assets__group ul { margin: 0; padding: 0; list-style: none; }
.lucas-page .xp-assets li { padding: .875rem 0; border: 0; border-top: 1px solid var(--xp-line); border-radius: 0; background: none; }
.lucas-page .xp-assets li:first-child { padding-top: 0; border-top: 0; }
.xp-assets__group li b { display: block; font-size: .9375rem; font-weight: 600; color: var(--xp-ink); }
.xp-assets__group li span { display: block; margin-top: .125rem; font-size: .875rem; line-height: 1.5; color: var(--xp-muted); }

/* Ghi nhận độc lập */
.xp-press-row { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--xp-line); }
.xp-press-row > .xp-label { margin: 0; min-width: 11rem; color: var(--xp-muted); }
.lucas-page .xp-press { margin: 0; padding: 0; border: 0; }
.lucas-page .xp-creds { margin: 0; }

/* Lộ trình sau đào tạo */
.lucas-page .xp-road { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: .5rem; margin: 0 0 .875rem; }
.lucas-page .xp-road li { min-width: 0; }
.xp-road__legend { display: flex; align-items: center; gap: .5rem; margin: 0 0 3rem; font-size: .8125rem; color: #bdccc9; }
.xp-road__legend span { width: .75rem; height: .75rem; border-radius: 3px; border: 1px solid var(--xp-bright); background: rgba(16, 192, 224, .12); }

@media (max-width: 1024px) {
  .lucas-page .xp-hero__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .lucas-page .xp-hero__media { max-width: none; }
  .xp-diff { grid-template-columns: 1fr; }
  .lucas-page .xp-diff .xp-values { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .xp-prove { grid-template-columns: 1fr; gap: .75rem; }
  .xp-prove > li { display: grid; grid-template-columns: 2.75rem minmax(0, 1fr); column-gap: 1rem; padding: 1.125rem 1.25rem; }
  .xp-prove > li::after { display: none; }
  .xp-prove__l { grid-row: span 2; }
  .xp-prove h3 { margin: 0 0 .25rem; }
  .lucas-page .xp-room { grid-template-columns: 1fr; gap: 2.5rem; }
  .lucas-page .xp-cases { grid-template-columns: 1fr 1fr; }
  .lucas-page .xp-road { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .lucas-page .xp-assets { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .lucas-page .xp-hero { padding-top: 3.5rem; }
  .lucas-page .xp .head { margin-bottom: 1.75rem; }
  .xp-card { padding: 1.5rem; }
  .lucas-page .xp-diff .xp-values, .lucas-page .xp-cases { grid-template-columns: 1fr; }
  .lucas-page .xp-case { padding: 1.375rem; }
  .lucas-page .xp-road { grid-template-columns: 1fr; gap: .375rem; }
  .lucas-page .xp-road li { display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem; }
  .lucas-page .xp-road b { margin: 0; }
  .xp-press-row > .xp-label { min-width: 0; width: 100%; }
}

/* Nhãn section: markup nay viết thường (bỏ số "03 · …") ⇒ CSS lo viết hoa. */
.lucas-page .xp .chips { text-transform: uppercase; font-size: .75rem; font-weight: 700; letter-spacing: .08em; }
@media (max-width: 640px) {
  .lucas-page .xp-proof__grid { grid-template-columns: 1fr 1fr; }
  .lucas-page .xp-proof__item { padding: 1.25rem 1rem; }
  .lucas-page .xp-proof__note { font-size: .8125rem; }
}