/* Trang dự án eDA: phần trên = bản eDA bấm được + sơ đồ nhánh; phần dưới = các trang theo mạch nội dung */
.eda-sec{margin-top:clamp(48px,7vw,90px)}
.eda-sec .eyebrow{margin-bottom:12px}
.eda-sec h2{font-weight:800;letter-spacing:-.03em;line-height:1.08;font-size:clamp(26px,3.6vw,44px);max-width:20ch;text-wrap:balance}
.eda-sec .lead{color:var(--bone-dim);font-size:16.5px;line-height:1.65;max-width:62ch;margin-top:14px}

/* ---- phần trên: trình chiếu + sơ đồ ---- */
.eda-play{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(16px,2vw,28px);margin-top:clamp(24px,3vw,36px);align-items:start}
@media(max-width:980px){.eda-play{grid-template-columns:1fr}}
.eda-screen{border-radius:16px;padding:10px;background:linear-gradient(180deg,#1c1e21,#111214);border:1px solid var(--line);box-shadow:0 40px 100px -50px rgba(0,0,0,.9)}
.eda-screen .frame{position:relative;aspect-ratio:16/9;border-radius:9px;overflow:hidden;background:#000}
.eda-screen iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.eda-bar{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;padding:12px 6px 4px}
.eda-now{font-size:14px;color:var(--bone-dim);min-width:0}
.eda-now b{color:var(--bone);font-variant-numeric:tabular-nums;margin-right:6px}
.eda-btns{display:flex;gap:8px}
.eda-btns a,.eda-btns button{font:inherit;font-size:13px;color:var(--bone);padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:transparent;cursor:pointer;white-space:nowrap}
.eda-btns a:hover,.eda-btns button:hover{border-color:var(--gold);color:var(--gold)}

.eda-map{border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--ink-raise)}
.eda-map .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--bone-faint);display:block;margin-bottom:12px}
.eda-row{display:grid;grid-template-columns:88px 1fr;gap:8px;align-items:center;padding:7px 0;border-top:1px solid var(--line-soft)}
.eda-row:first-of-type{border-top:none}
.eda-row .lbl{font-size:12.5px;color:var(--bone-dim);line-height:1.3}
.eda-row .nodes{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.eda-row .nodes i{font-style:normal;color:var(--bone-faint);font-size:11px}
.eda-node{font:inherit;font-family:var(--mono);font-size:12px;letter-spacing:.04em;min-width:34px;height:30px;padding:0 7px;border-radius:8px;
  border:1px solid var(--line);background:var(--ink);color:var(--bone);cursor:pointer;transition:.15s}
.eda-node:hover{border-color:var(--gold);color:var(--gold)}
.eda-node[aria-current="true"]{background:var(--gold);border-color:var(--gold);color:var(--btn-fg);font-weight:700}
.eda-map .note{margin-top:12px;color:var(--bone-faint);font-size:12.5px;line-height:1.5}
@media(max-width:980px){.eda-row{grid-template-columns:110px 1fr}}

/* ---- phần dưới: mạch nội dung ---- */
.eda-flow{margin-top:clamp(28px,4vw,44px);display:flex;flex-direction:column}
.eda-step{display:grid;grid-template-columns:240px minmax(0,1fr);gap:clamp(16px,3vw,40px);padding:clamp(26px,3.5vw,40px) 0;border-top:1px solid var(--line)}
@media(max-width:860px){.eda-step{grid-template-columns:1fr}}
.eda-step .side .n{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--gold);display:block;margin-bottom:8px}
.eda-step .side h3{font-weight:800;font-size:clamp(19px,2vw,24px);letter-spacing:-.02em;line-height:1.2}
.eda-step .side p{color:var(--bone-dim);font-size:14.5px;line-height:1.6;margin-top:8px}
.eda-step .gallery{margin-top:0;grid-template-columns:repeat(2,minmax(0,1fr))}
.eda-step .gallery a:first-child{grid-column:auto}
.eda-step .gallery a:first-child:nth-last-child(2n+3),.eda-step .gallery a:only-child{grid-column:1/-1}   /* nhóm lẻ: khung đầu trải ngang */
.eda-step .gallery a{aspect-ratio:16/9;position:relative}
.eda-step .gallery figcaption{position:absolute;left:8px;bottom:8px;font-size:12px;color:#fff;background:rgba(5,6,7,.72);padding:4px 8px;border-radius:6px;pointer-events:none}
.eda-step .gallery figcaption b{font-family:var(--mono);margin-right:6px;color:var(--gold)}
.eda-step .play{font:inherit;font-size:13px;margin-top:12px;color:var(--bone);padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:transparent;cursor:pointer}
.eda-step .play:hover{border-color:var(--gold);color:var(--gold)}
@media(max-width:480px){.eda-step .gallery{grid-template-columns:1fr}}