/* 9Prep — Trang Demo Reading (template page-9p-demo.php, body.np-demo)
   Prefix riêng: .np-dm-   ·   Token màu/font kế thừa từ 9p-chrome.css
   Các khối dùng chung (np-phero, np-section, np-btn, np-final…) nằm ở 9p-core.css */

/* ---------- Hero: 3 viên chứng thực ---------- */
.np-dm-proof{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:26px}
.np-dm-proof span{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;
  border:1px solid rgba(255,255,255,.16);border-radius:999px;
  background:rgba(255,227,74,.1);font-size:13.5px;font-weight:600;color:rgba(255,255,255,.86)}
.np-dm-proof span::before{content:"✓";color:var(--np-yellow);font-weight:800}

/* ---------- Thanh độ khó tăng dần ---------- */
.np-dm-grade{max-width:960px;margin:6px auto 0}
.np-dm-grade-labels{display:flex;justify-content:space-between;
  font-family:var(--np-display);font-size:12px;font-weight:800;letter-spacing:.1em;
  text-transform:uppercase;color:var(--np-muted);margin-bottom:10px}
.np-dm-grade-bar{position:relative;height:14px;border-radius:999px;
  background:linear-gradient(90deg,var(--np-cream2) 0%,#e8a48f 55%,var(--np-brand) 100%)}
.np-dm-grade-bar i{position:absolute;top:50%;transform:translate(-50%,-50%);
  width:14px;height:14px;border-radius:50%;background:#fff;
  border:3px solid var(--np-brand);box-shadow:0 1px 4px rgba(46,35,25,.2)}
.np-dm-grade-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:30px}
.np-dm-gp{padding:24px 26px;background:#fff;border:1px solid var(--np-line);
  border-radius:16px;text-align:left;box-shadow:var(--np-shadow)}
.np-dm-gp-num{font-family:var(--np-display);font-size:13px;font-weight:800;
  letter-spacing:.08em;color:var(--np-brand);margin-bottom:8px}
.np-page main .np-dm-gp h3{font-size:19px;line-height:1.3;letter-spacing:-.02em;margin:0 0 7px}
.np-page main .np-dm-gp p{font-size:16px;line-height:1.6;color:var(--np-ink2);margin:0}
.np-page main .np-dm-grade-note{margin:26px 0 0;text-align:center;font-size:17px;
  font-style:italic;color:var(--np-muted)}

/* ---------- Lưới 12 dạng câu hỏi ---------- */
.np-dm-types{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;text-align:left}
.np-dm-type{display:flex;flex-direction:column;padding:20px 22px 20px;
  background:#fff;border:1px solid var(--np-line);border-radius:14px;
  transition:border-color .16s,transform .16s,box-shadow .16s}
.np-dm-type:hover{border-color:var(--np-brand);transform:translateY(-2px);
  box-shadow:0 16px 34px -18px rgba(200,68,44,.45)}
.np-dm-type-head{display:flex;align-items:center;gap:10px;margin-bottom:7px}
.np-page main .np-dm-type h3{font-size:16px;line-height:1.25;letter-spacing:-.015em;margin:0}
.np-page main .np-dm-type p{flex:1 1 auto;font-size:15.5px;line-height:1.5;color:var(--np-ink2);margin:0}
.np-dm-tag{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  height:23px;padding:0 9px;border-radius:6px;background:var(--np-brand-soft);
  font-family:var(--np-display);font-size:10.5px;font-weight:800;letter-spacing:.07em;color:var(--np-brand)}
.np-page a.np-dm-try{align-self:flex-start;margin-top:16px;padding:9px 19px;font-size:14px}
.np-dm-try i{font-style:normal;display:inline-block;transition:transform .16s;margin-left:5px}
.np-dm-try:hover i{transform:translateX(3px)}

/* ---------- Mix Test + Full Passage ---------- */
.np-dm-modes{display:grid;grid-template-columns:1fr 1fr;gap:20px;
  max-width:820px;margin-inline:auto;text-align:left}
.np-dm-mode{display:flex;flex-direction:column;padding:30px 28px 24px;
  background:#fff;border:1.5px solid var(--np-line);border-radius:20px;box-shadow:var(--np-shadow)}
.np-dm-mode.is-dark{background:var(--np-dark);border-color:var(--np-dark);
  box-shadow:0 26px 56px -26px rgba(46,35,25,.5)}
.np-dm-mode-step{display:flex;align-items:baseline;gap:10px;margin-bottom:14px}
.np-dm-mode-step b{font-family:var(--np-display);font-size:27px;font-weight:800;
  line-height:1;color:var(--np-brand)}
.np-dm-mode.is-dark .np-dm-mode-step b{color:var(--np-yellow)}
.np-dm-mode-step span{font-family:var(--np-display);font-size:11px;font-weight:800;
  letter-spacing:.16em;text-transform:uppercase;color:var(--np-muted)}
.np-dm-mode.is-dark .np-dm-mode-step span{color:rgba(255,255,255,.58)}
.np-page main .np-dm-mode h3{font-size:24px;line-height:1.22;letter-spacing:-.025em;margin:0 0 9px}
.np-page main .np-dm-mode.is-dark h3{color:#fff}
.np-dm-mode h3 em{font-style:normal;color:var(--np-brand)}
.np-dm-mode.is-dark h3 em{color:var(--np-yellow)}
.np-page main .np-dm-mode p{flex:1 1 auto;font-size:17px;line-height:1.6;color:var(--np-ink2);margin:0 0 20px}
.np-page main .np-dm-mode.is-dark p{color:rgba(255,255,255,.8)}
.np-page a.np-dm-mode-cta{width:100%;justify-content:center}
.np-dm-mode-cta i{font-style:normal;display:inline-block;transition:transform .16s;margin-left:7px}
.np-dm-mode-cta:hover i{transform:translateX(3px)}
.np-dm-mode-lock{margin-top:14px;padding-top:12px;border-top:1px solid var(--np-line);
  text-align:center;font-size:12.5px;line-height:1.45;color:var(--np-muted)}
.np-dm-mode.is-dark .np-dm-mode-lock{border-top-color:rgba(255,255,255,.14);color:rgba(255,255,255,.56)}

/* ---------- Lộ trình 4 giai đoạn ---------- */
.np-dm-rm{max-width:880px;margin:6px auto 0;text-align:left}
.np-dm-ph{position:relative;display:grid;grid-template-columns:62px 1fr;gap:22px;padding-bottom:30px}
.np-dm-ph:last-child{padding-bottom:0}
.np-dm-ph:not(:last-child)::before{content:"";position:absolute;left:30px;top:64px;bottom:-2px;
  width:2px;background:var(--np-line)}
.np-dm-ph{--node:var(--np-brand)}
.np-dm-ph[data-ph="1"]{--node:var(--np-green)}
.np-dm-ph[data-ph="2"]{--node:#8b6f00}
.np-dm-ph[data-ph="3"]{--node:var(--np-brand)}
.np-dm-ph[data-ph="4"]{--node:var(--np-ink)}
.np-dm-ph-node{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;
  border:2.5px solid var(--node);background:var(--np-paper);position:relative;z-index:1;
  font-family:var(--np-display);font-size:28px;font-weight:800;color:var(--node)}
.np-dm-ph-stage{font-family:var(--np-display);font-size:11px;font-weight:800;
  letter-spacing:.16em;text-transform:uppercase;color:var(--node);margin-bottom:6px}
.np-page main .np-dm-ph h3{font-size:21px;line-height:1.3;letter-spacing:-.02em;margin:0 0 14px}
.np-dm-ph-flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.np-dm-step{display:inline-flex;align-items:center;gap:8px}
.np-dm-chip{display:inline-flex;align-items:center;gap:9px;padding:7px 15px 7px 8px;
  background:var(--np-paper);border:1px solid var(--np-line);border-radius:999px;
  font-size:14px;font-weight:600;color:var(--np-ink2)}
.np-dm-ph-arrow{color:var(--node);font-weight:800;opacity:.65}
.np-dm-note{max-width:880px;margin:36px auto 0;padding:22px 26px;text-align:left;
  background:var(--np-paper);border:1px solid var(--np-line);
  border-left:4px solid var(--np-brand);border-radius:12px}
.np-dm-note-lab{font-family:var(--np-display);font-size:11px;font-weight:800;
  letter-spacing:.14em;text-transform:uppercase;color:var(--np-brand);margin-bottom:8px}
.np-page main .np-dm-note p{font-size:17px;line-height:1.62;color:var(--np-ink2);margin:0}

/* ---------- 4 điểm khác biệt ---------- */
.np-dm-diff{display:grid;grid-template-columns:1fr 1fr;gap:18px;text-align:left}
.np-dm-diff-card{padding:28px 30px;background:#fff;border:1px solid var(--np-line);
  border-radius:16px;box-shadow:var(--np-shadow)}
.np-dm-diff-num{font-family:var(--np-display);font-size:27px;font-weight:800;
  line-height:1;color:var(--np-brand);margin-bottom:10px}
.np-page main .np-dm-diff-card h3{font-size:23px;line-height:1.26;letter-spacing:-.025em;margin:0 0 11px}
.np-dm-diff-card h3 em{font-style:normal;color:var(--np-brand)}
.np-page main .np-dm-diff-card p{font-size:17px;line-height:1.6;color:var(--np-ink2);margin:0}

/* ---------- Khối Pro ---------- */
.np-dm-pro{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;text-align:left}
.np-page main .np-dm-pro h2{font-size:clamp(28px,3vw,38px);line-height:1.16;
  letter-spacing:-.035em;color:#fff;margin:0 0 16px}
.np-dm-pro h2 em{font-style:normal;color:var(--np-yellow)}
.np-page main .np-dm-pro-text p{font-size:18px;line-height:1.68;color:rgba(255,255,255,.8);margin:0 0 26px}
.np-dm-pro-text .np-eyebrow{color:var(--np-yellow)}
.np-dm-pro-text .np-btn i{font-style:normal;display:inline-block;transition:transform .16s;margin-left:7px}
.np-dm-pro-text .np-btn:hover i{transform:translateX(3px)}
.np-dm-pro-list{padding:30px 32px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);border-radius:18px}
.np-dm-pro-head{font-family:var(--np-display);font-size:11px;font-weight:800;
  letter-spacing:.18em;text-transform:uppercase;color:var(--np-yellow);margin-bottom:16px}
.np-dm-pro-item{display:flex;align-items:flex-start;gap:14px;padding:11px 0;
  border-bottom:1px solid rgba(255,255,255,.08);font-size:16px;line-height:1.5;color:rgba(255,255,255,.9)}
.np-dm-pro-item:last-child{border-bottom:0}
.np-dm-pro-item b{color:#fff}
.np-dm-pro-num{flex:0 0 26px;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,227,74,.18);color:var(--np-yellow);
  font-family:var(--np-display);font-size:12px;font-weight:800;margin-top:1px}

/* ---------- Responsive ---------- */
@media(max-width:1040px){
  .np-dm-types{grid-template-columns:repeat(2,minmax(0,1fr))}
  .np-dm-grade-points{grid-template-columns:1fr;max-width:620px;margin-inline:auto}
}
@media(max-width:900px){
  .np-dm-pro{grid-template-columns:1fr;gap:32px}
  .np-dm-diff{grid-template-columns:1fr}
}
@media(max-width:760px){
  .np-dm-modes{grid-template-columns:1fr;max-width:520px}
}
@media(max-width:640px){
  .np-dm-types{grid-template-columns:1fr}
  .np-dm-proof{display:grid;justify-content:stretch;max-width:320px;margin-inline:auto}
  .np-dm-proof span{justify-content:flex-start}
  .np-dm-ph{grid-template-columns:46px 1fr;gap:16px}
  .np-dm-ph-node{width:46px;height:46px;font-size:22px}
  .np-dm-ph:not(:last-child)::before{left:22px;top:48px}
  .np-page main .np-dm-ph h3{font-size:19px}
  .np-dm-mode{padding:26px 22px 20px}
  .np-dm-diff-card{padding:24px 24px}
  .np-dm-pro-list{padding:24px 22px}
  .np-dm-note{padding:20px 20px}
}