/* Styles for the studio area. Prefix every selector with .studio- (see docs/TECH_SPEC.md §10.3).
   The Redesign Studio: a full-screen overlay. Header (navy) · the signature "agents run, humans decide"
   strip · left: the flow step by step · right: live metrics, risk exposure, needs, feedback.
   Choice colours: agent = teal · stage gate = amber · people = pale sky · eliminated = grey hatch. */

:root {
  /* Strip colours on :root so the strip renders outside the overlay too (debrief). */
  --studio-agent: var(--teal-ui);
  --studio-agent-deep: var(--teal-ink);
  --studio-gate: var(--amber);
  --studio-gate-ink: var(--amber-ink);
  --studio-human: var(--sky);
  --studio-gone: #9AA7B1;
  --studio-hatch: repeating-linear-gradient(135deg, #E3E8EC 0 5px, #F3F5F7 5px 10px);
}
.studio-overlay {
  position: fixed; inset: 0; z-index: 80; background: rgba(0, 25, 42, .55); animation: fadeIn .2s;
}
.studio-shell {
  position: absolute; inset: 10px; display: flex; flex-direction: column; background: var(--bg);
  border-radius: 18px; overflow: hidden; box-shadow: 0 30px 80px rgba(0, 25, 42, .4); animation: studioIn .35s var(--ease);
}
@media (max-height: 760px), (max-width: 1100px) { .studio-shell { inset: 0; border-radius: 0; } }
@keyframes studioIn { from { opacity: 0; transform: translateY(14px) scale(.99); } }
@keyframes studioFlow { 0% { background-position: -40% 0; } 60%, 100% { background-position: 140% 0; } }

/* ---------- header ---------- */
.studio-head {
  flex: none; display: flex; align-items: center; gap: 22px; padding: 12px 20px 12px 24px; position: relative; overflow: hidden;
  background: linear-gradient(115deg, var(--navy-2) 0%, var(--navy) 50%, #0B4A74 100%); color: #fff;
}
.studio-head::after { content: ""; position: absolute; right: 18%; top: -160px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(0, 189, 157, .18), transparent 65%); pointer-events: none; }
.studio-head > * { position: relative; z-index: 1; }
.studio-head-main { flex: 1 1 auto; min-width: 0; }
.studio-head-kicker { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.studio-kicker { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--teal-on-navy-text); }
.studio-head .role-chip { color: #FFD2C7; font-size: var(--fs-xs); }
.studio-title { color: #fff; font-size: clamp(22px, 1.9vw, 28px); font-weight: var(--fw-bold); margin: 3px 0 1px; letter-spacing: -.02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.studio-short { display: inline-block; vertical-align: 4px; font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; color: var(--on-dark-2); background: rgba(255, 255, 255, .1); padding: 1px 8px; border-radius: 6px; margin-left: 4px; }
.studio-meta { display: flex; flex-wrap: wrap; gap: 4px 6px; font-size: var(--fs-sm); color: var(--on-dark-2); }
.studio-dot { opacity: .55; }
.studio-status { display: inline-flex; align-items: center; gap: 5px; font-size: var(--fs-xs); font-weight: var(--fw-strong); padding: 2px 10px; border-radius: 999px; background: rgba(255, 255, 255, .12); color: var(--on-dark-2); white-space: nowrap; }
.studio-status.is-draft { background: rgba(242, 185, 73, .2); color: #FCE3B0; }
.studio-status.is-saved { background: rgba(0, 189, 157, .2); color: #9FE5D8; }
.studio-status.is-dirty { background: rgba(245, 137, 116, .25); color: #FFD2C7; }
.studio-head-side { flex: none; display: flex; align-items: center; gap: 14px; }
.studio-team { display: flex; }
.studio-team { gap: 4px; }
.studio-team .avatar { border: 0; background: #DDE8EF; font-size: var(--fs-xs); letter-spacing: -.02em; }
.studio-team .avatar.is-online::after { border-color: var(--navy); }
.studio-bp { display: flex; flex-direction: column; gap: 3px; }
.studio-bp-lbl { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--on-dark-2); }
.studio-bp-btns { display: inline-flex; border: 1px solid rgba(255, 255, 255, .32); border-radius: 999px; overflow: hidden; background: rgba(255, 255, 255, .04); }
.studio-bp-btn { border: 0; background: none; color: #fff; font-weight: var(--fw-bold); font-size: var(--fs-sm); padding: 0 13px; min-height: 34px; cursor: pointer; transition: background .15s; white-space: nowrap; }
.studio-bp-btn + .studio-bp-btn { border-left: 1px solid rgba(255, 255, 255, .2); }
.studio-bp-btn:hover { background: rgba(255, 255, 255, .14); }
.studio-bp-btn.is-active { background: var(--teal-on-navy); color: var(--navy-2); }
.studio-bp-btn:focus-visible { outline: 3px solid #fff; outline-offset: -3px; }
.studio-save-wrap { display: inline-flex; }
.studio-btn-save { min-height: 42px; }
.studio-btn-save[aria-disabled="true"] { background: var(--band); border-color: var(--border); color: var(--muted-on-tint); box-shadow: none; cursor: not-allowed; }
.studio-btn-save[aria-disabled="true"]:hover { background: var(--teal-ink); border-color: var(--teal-ink); }
.studio-open-count { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 6px; border-radius: 999px; background: rgba(255, 255, 255, .22); font-size: var(--fs-xs); font-weight: var(--fw-bold); }
.studio-head .studio-btn-saved { min-height: 42px; background: rgba(0, 189, 157, .16); border-color: rgba(0, 189, 157, .55); color: #9FE5D8; cursor: default; }
.studio-close { flex: none; }
.studio-head :focus-visible { outline-color: #fff; }

/* read-only / sprint / live notes */
.studio-notes { flex: none; display: flex; flex-direction: column; }
.studio-note { display: flex; align-items: center; gap: 10px; padding: 8px 24px; font-size: var(--fs-sm); font-weight: var(--fw-strong); color: var(--ink); border-bottom: 1px solid var(--hairline); }
.studio-note-lock { background: var(--amber-soft); color: var(--amber-ink); }
.studio-note-sprint { background: var(--cyan-soft); color: var(--link-hover); }
.studio-note-live { background: var(--teal-soft); color: var(--teal-deep); }

/* ---------- the signature strip ---------- */
.studio-strip { flex: none; background: #fff; border-bottom: 1px solid var(--hairline); padding: 10px 24px 12px; box-shadow: 0 4px 14px rgba(0, 41, 65, .05); position: relative; z-index: 2; }
.studio-strip-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px 18px; flex-wrap: wrap; margin-bottom: 6px; }
.studio-strip-title { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; min-width: 0; }
.studio-strip-kicker { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--ink); }
.studio-strip-sum { font-size: var(--fs-sm); color: var(--muted); font-variant-numeric: tabular-nums; }
.studio-strip-sum b { font-weight: var(--fw-strong); }
.studio-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: var(--fs-xs); color: var(--muted); }
.studio-legend > span { display: inline-flex; align-items: center; gap: 6px; }
.studio-legend i { display: inline-block; width: 18px; height: 8px; border-radius: 4px; }
.studio-lg-run { background: var(--studio-agent); }
.studio-lg-gate { width: 10px !important; height: 10px !important; border-radius: 2px !important; transform: rotate(45deg); background: var(--studio-gate); margin: 0 3px; }
.studio-lg-human { background: var(--studio-human); }
.studio-lg-gone { background: var(--studio-hatch); box-shadow: inset 0 0 0 1px #D5DEE5; }

.studio-track { position: relative; display: flex; align-items: stretch; gap: 8px; min-width: 0; }
.studio-track-line { position: absolute; left: 0; right: 0; top: 26px; height: 2px; background: repeating-linear-gradient(90deg, var(--border) 0 6px, transparent 6px 10px); z-index: 0; }
.studio-seg { position: relative; z-index: 1; display: flex; flex-direction: column; flex: 1 1 0; }
.studio-seg-body { display: flex; gap: 2px; position: relative; flex: 1 1 auto; }
/* A caption that does not fit its segment wraps onto a hidden second line (first the step count, then the name),
   so it never runs into the next segment; the segment's title keeps the full caption. */
.studio-seg-cap { height: 18px; display: flex; flex-wrap: wrap; align-items: center; align-content: flex-start; gap: 10px 5px; font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); white-space: nowrap; overflow: hidden; contain: inline-size; }
.studio-seg-cap > * { line-height: 18px; }
.studio-seg-cap .ico { flex: none; }
.studio-seg-count { font-weight: var(--fw-bold); letter-spacing: 0; text-transform: none; color: var(--muted); }
.studio-seg-count::before { content: "· "; }
.studio-seg-run .studio-seg-cap { color: var(--teal-deep); }
.studio-seg-human .studio-seg-cap { color: #4E5E6A; }
.studio-seg-gone .studio-seg-cap, .studio-seg-open .studio-seg-cap { color: #8795A0; }
.studio-seg-gone { flex: 0 0 auto; }
.studio-seg-gate { flex: 0 1 auto; }
.studio-seg-run .studio-seg-cap { position: relative; z-index: 2; }
.studio-seg-cap-gate { justify-content: center; color: var(--studio-gate-ink); }

.studio-node { flex: var(--w) 1 0; min-width: 74px; display: flex; flex-direction: column; gap: 5px; border: 0; background: none; padding: 0; margin: 0; text-align: center; color: var(--ink); font: inherit; cursor: default; }
.studio-node.is-btn { cursor: pointer; }
.studio-node-bar { display: block; height: 18px; background: var(--border); transition: background .3s, box-shadow .3s; }
.studio-node-lbl { font-size: var(--fs-xs); font-weight: var(--fw-strong); line-height: 1.25; padding: 0 3px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 30px; overflow-wrap: anywhere; hyphens: manual; }
.studio-node.is-btn:hover .studio-node-lbl, .studio-node.is-btn:focus-visible .studio-node-lbl { color: var(--teal-deep); text-decoration: underline; text-underline-offset: 2px; }
.studio-node.is-btn:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 8px; }
.studio-seg-body > .studio-node:first-child .studio-node-bar { border-top-left-radius: 9px; border-bottom-left-radius: 9px; }
.studio-seg-body > .studio-node:last-child .studio-node-bar { border-top-right-radius: 9px; border-bottom-right-radius: 9px; }
.studio-node.is-agent .studio-node-bar { background: linear-gradient(180deg, #11BFA0, var(--studio-agent)); }
.studio-node.is-human .studio-node-bar { background: var(--studio-human); }
.studio-node.is-open .studio-node-bar { background: #fff; box-shadow: inset 0 0 0 1.5px var(--border-strong); border-radius: 9px; background-image: repeating-linear-gradient(90deg, transparent 0 6px, rgba(98, 117, 131, .12) 6px 12px); }
.studio-node.is-open .studio-node-lbl { color: var(--muted); }
.studio-node.is-eliminate { flex: 0 0 96px; min-width: 96px; }
.studio-node.is-eliminate .studio-node-bar { background: var(--studio-hatch); box-shadow: inset 0 0 0 1px #D5DEE5; border-radius: 9px; }
.studio-node.is-eliminate .studio-node-lbl { color: #8795A0; text-decoration: line-through; text-decoration-color: rgba(98, 117, 131, .6); font-weight: var(--fw-medium); font-size: var(--fs-xs); }
.studio-node.is-eliminate.in-run .studio-node-bar { border-radius: 0; height: 18px; background: repeating-linear-gradient(135deg, #BFE9E0 0 5px, #E4F6F2 5px 10px); box-shadow: none; }
.studio-seg-body > .studio-node.is-eliminate.in-run:last-child .studio-node-bar { border-top-right-radius: 9px; border-bottom-right-radius: 9px; }
.studio-seg-run .studio-seg-body::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 18px; border-radius: 9px; pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .5), transparent) no-repeat; background-size: 28% 100%; animation: studioFlow 4.2s var(--ease) infinite;
}
.studio-node.is-diff .studio-node-bar { box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--salmon-ui); position: relative; z-index: 1; }
.studio-node.is-diff .studio-node-lbl { color: var(--salmon-ink); font-weight: var(--fw-bold); }

.studio-seg-gate { min-width: 96px; max-width: 210px; }
.studio-gate { display: flex; flex-direction: column; align-items: center; gap: 5px; border: 0; background: none; padding: 0; font: inherit; color: var(--ink); cursor: default; text-align: center; }
.studio-gate.is-btn { cursor: pointer; }
.studio-gate.is-btn:hover .studio-gate-lbl b { color: var(--amber-ink); text-decoration: underline; }
.studio-gate.is-btn:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 8px; }
.studio-gate-mark {
  width: 24px; height: 24px; margin-top: -3px; display: grid; place-items: center; border-radius: 6px; transform: rotate(45deg);
  background: var(--studio-gate); color: var(--navy-2); box-shadow: 0 0 0 3px #fff, 0 3px 10px rgba(181, 125, 10, .35); flex: none;
}
.studio-seg-gate.is-qa .studio-gate-mark { background: #fff; color: var(--amber-ink); box-shadow: inset 0 0 0 2px var(--amber-ui), 0 0 0 3px #fff; }
.studio-gate-mark .ico { transform: rotate(-45deg); }
.studio-gate-lbl { display: flex; flex-direction: column; font-size: var(--fs-xs); line-height: 1.25; margin-top: 2px; max-width: 210px; min-width: 0; padding: 0 4px; }
.studio-gate-lbl b { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.studio-gate-lbl span { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; overflow-wrap: anywhere; }
.studio-gate-lbl b { font-weight: var(--fw-bold); color: var(--ink); }
.studio-gate-lbl span { color: var(--amber-ink); font-weight: var(--fw-strong); font-size: var(--fs-xs); }
.studio-seg-gate.is-qa .studio-gate-lbl span { font-style: italic; }
.studio-seg-gate.is-diff .studio-gate-mark { box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--salmon-ui); }
.studio-seg-gate.is-diff .studio-gate-lbl b { color: var(--salmon-ink); }

/* mini strip (blueprint cards) */
.studio-track.is-mini { gap: 4px; align-items: center; min-height: 22px; }
.studio-track.is-mini .studio-track-line { top: 50%; transform: translateY(-50%); }
.studio-track.is-mini .studio-node { min-width: 10px; gap: 0; }
.studio-track.is-mini .studio-node-bar, .studio-track.is-mini .studio-seg-run .studio-seg-body::after { height: 12px; }
.studio-track.is-mini .studio-node.is-eliminate { flex: 0 0 16px; min-width: 16px; }
/* The rotated gate mark needs a slot as wide as its diagonal (14 × √2 + the white ring), or it covers the bars beside it. */
.studio-track.is-mini .studio-seg-gate { flex: 0 0 28px; min-width: 28px; max-width: 28px; align-items: center; }
.studio-track.is-mini .studio-gate-mark { width: 14px; height: 14px; margin: 0; border-radius: 4px; box-shadow: 0 0 0 2px #fff; }
.studio-track.is-mini .studio-gate-mark .ico { width: 10px; height: 10px; }

/* ---------- main layout ---------- */
.studio-main { flex: 1 1 auto; min-height: 0; display: grid; grid-template-columns: minmax(0, 1fr) 392px; }
.studio-left { overflow: auto; overscroll-behavior: contain; padding: 12px 20px 48px 24px; min-width: 0; }
.studio-panel { overflow: auto; overscroll-behavior: contain; padding: 12px 20px 48px 16px; border-left: 1px solid var(--hairline); background: #F9FBFC; min-width: 0; }
.studio-express { flex: 1 1 auto; min-height: 0; overflow: auto; overscroll-behavior: contain; }
.studio-express-inner { max-width: 1480px; margin: 0 auto; padding: 16px 24px 56px; }
.studio-shell.is-readonly .studio-express-inner { padding-top: 20px; }

/* tabs */
.studio-tabs { display: flex; align-items: center; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.studio-tab { display: inline-flex; align-items: center; gap: 7px; min-height: 36px; padding: 0 14px; border-radius: 999px; border: 1.5px solid var(--hairline); background: #fff; color: var(--ink-2); font-weight: var(--fw-bold); font-size: var(--fs-sm); cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
.studio-tab:hover { border-color: var(--teal-ink); color: var(--teal-deep); }
.studio-tab.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }
.studio-tab[aria-disabled="true"] { color: var(--muted); background: var(--band); border-style: dashed; cursor: not-allowed; }
.studio-tab[aria-disabled="true"]:hover { border-color: var(--hairline); color: var(--ink-2); }
.studio-tab-hint { font-size: var(--fs-xs); color: var(--muted); }

/* first-look intro (empty design) */
.studio-intro { margin-bottom: 12px; padding: 12px 14px; border-radius: 16px; background: #fff; border: 1px solid var(--hairline); box-shadow: var(--shadow-xs); animation: rise .45s var(--ease) both; }
.studio-intro-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.studio-intro-c { padding: 9px 11px; border-radius: 12px; background: var(--band); border-top: 3px solid var(--border); min-width: 0; }
.studio-intro-c.is-eliminate { border-top-color: var(--ink-2); }
.studio-intro-c.is-agent { border-top-color: var(--teal-ui); background: #EEF9F6; }
.studio-intro-c.is-gate { border-top-color: var(--amber); background: #FEF8EC; }
.studio-intro-c.is-human { border-top-color: var(--sky); }
.studio-intro-top { display: flex; align-items: center; gap: 7px; }
.studio-intro-top b { color: var(--ink); font-size: var(--fs-sm); }
.studio-intro-ico { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; background: #fff; color: var(--ink-2); flex: none; }
.studio-intro-c.is-agent .studio-intro-ico { background: var(--teal-ink); color: #fff; }
.studio-intro-c.is-gate .studio-intro-ico { background: var(--amber); color: var(--navy-2); }
.studio-intro-c.is-human .studio-intro-ico { background: var(--sky); color: #fff; }
.studio-intro-c.is-eliminate .studio-intro-ico { background: var(--ink-2); color: #fff; }
.studio-intro-c p { font-size: var(--fs-xs); line-height: 1.4; color: var(--ink-2); margin: 6px 0 0; }
.studio-intro-tip { display: flex; gap: 10px; align-items: baseline; margin: 10px 2px 0; font-size: var(--fs-sm); color: var(--ink); font-weight: var(--fw-medium); line-height: 1.4; }
.studio-intro-tip .role-chip { flex: none; }
@media (max-width: 1279px) { .studio-intro-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- step rows ---------- */
.studio-steps { display: flex; flex-direction: column; gap: 10px; }
.studio-step {
  --c: var(--border); position: relative; display: grid; grid-template-columns: minmax(0, 1.08fr) 190px minmax(0, 1fr);
  background: #fff; border: 1px solid var(--hairline); border-radius: 16px; box-shadow: var(--shadow-xs); overflow: hidden; scroll-margin: 16px;
  transition: border-color .25s, box-shadow .25s;
}
.studio-step::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--c); z-index: 1; transition: background .25s; }
.studio-step.is-agent { --c: var(--studio-agent); }
.studio-step.is-gate { --c: var(--studio-gate); }
.studio-step.is-human { --c: var(--studio-human); }
.studio-step.is-eliminate { --c: var(--studio-gone); }
.studio-step.is-open { --c: transparent; border-style: dashed; border-color: var(--border); }
.studio-step.is-pending { box-shadow: 0 0 0 3px rgba(0, 178, 148, .16); }

.studio-legacy { padding: 11px 14px 12px 18px; background: #FBF8F4; border-right: 1px solid #EEE6DD; min-width: 0; }
.studio-legacy-top { display: flex; align-items: center; gap: 8px; min-width: 0; }
.studio-num { flex: none; display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--navy); color: #fff; font-size: var(--fs-xs); font-weight: var(--fw-bold); font-variant-numeric: tabular-nums; }
.studio-actor { flex: none; display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; background: #fff; color: var(--ink-2); box-shadow: inset 0 0 0 1px #EEE6DD; }
.studio-actor[data-actor="email"], .studio-actor[data-actor="paper"] { background: var(--salmon-soft); color: var(--salmon-ink); box-shadow: none; }
.studio-actor[data-actor="spreadsheet"], .studio-actor[data-actor="phone"] { background: var(--amber-soft); color: var(--amber-ink); box-shadow: none; }
.studio-who { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.studio-time { margin-left: auto; flex: none; display: inline-flex; align-items: center; gap: 4px; font-size: var(--fs-xs); font-weight: var(--fw-strong); color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.studio-step-name { font-size: var(--fs-base); font-weight: var(--fw-bold); margin: 6px 0 2px; letter-spacing: -.01em; }
.studio-legacy-text { font-size: var(--fs-sm); line-height: 1.42; color: var(--ink-2); margin: 0 0 8px; }
.studio-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.studio-tag { display: inline-flex; align-items: center; gap: 5px; font-size: var(--fs-xs); font-weight: var(--fw-strong); padding: 2px 8px; border-radius: 999px; background: #fff; color: var(--ink-2); box-shadow: inset 0 0 0 1px var(--hairline); white-space: nowrap; line-height: 1.5; }
.studio-tag-decision { background: var(--navy); color: #fff; box-shadow: none; }
.studio-tag-work { color: var(--ink); }
.studio-risk { box-shadow: none; }
.studio-risk-0 { background: var(--band); color: var(--muted); }
.studio-risk-1 { background: var(--amber-soft); color: var(--amber-ink); }
.studio-risk-2 { background: var(--salmon-soft); color: var(--salmon-ink); }
.studio-risk-dots { display: inline-flex; gap: 2px; }
.studio-risk-dots i { width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .25; }
.studio-risk-dots i.on { opacity: 1; }
.studio-tag-elim { background: var(--cyan-soft); color: var(--link-hover); box-shadow: inset 0 0 0 1px #9ED3E2; }
.studio-tag-inherent { background: var(--band); color: #4E5E6A; box-shadow: none; }

/* choice control */
.studio-choice { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; align-content: center; padding: 10px 12px; background: #fff; }
.studio-choice::before, .studio-choice::after {
  content: ""; position: absolute; top: 50%; width: 9px; height: 9px; border-top: 2px solid var(--border); border-right: 2px solid var(--border); transform: translateY(-50%) rotate(45deg); z-index: 1;
}
.studio-choice::before { left: -6px; background: #FBF8F4; }
.studio-choice::after { right: -6px; background: #fff; }
.studio-opt {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; min-height: 50px; padding: 5px 4px;
  border-radius: 12px; border: 1.5px solid var(--hairline); background: #fff; color: var(--ink-2); font-size: var(--fs-xs); font-weight: var(--fw-strong); line-height: 1.15;
  cursor: pointer; transition: background .18s, border-color .18s, color .18s, transform .12s, box-shadow .18s; text-align: center;
}
.studio-opt:hover { border-color: var(--teal-ink); color: var(--ink); }
.studio-opt:active { transform: translateY(1px); }
.studio-opt-eliminate.is-on { background: var(--ink-2); border-color: var(--ink-2); color: #fff; }
.studio-opt-agent.is-on { background: var(--teal-ink); border-color: var(--teal-ink); color: #fff; box-shadow: 0 4px 12px rgba(0, 121, 106, .28); }
.studio-opt-gate.is-on { background: var(--amber); border-color: var(--amber-ui); color: var(--navy-2); box-shadow: 0 4px 12px rgba(181, 125, 10, .25); }
.studio-opt-human.is-on { background: var(--sky); border-color: var(--sky); color: #fff; }
.studio-opt.is-impossible, .studio-opt.is-impossible:hover { background: var(--band); border-style: dashed; border-color: var(--border); color: var(--muted-on-tint); cursor: not-allowed; }
.studio-opt[aria-disabled="true"] { cursor: default; }
.studio-opt.readonly-choice:hover { color: var(--ink-2); }
.studio-shell.is-readonly .studio-opt:active { transform: none; }
/* Eliminate tried on a step that cannot disappear; asking why each step exists. */
.studio-tried { display: flex; gap: 6px; align-items: flex-start; margin: 0; padding: 6px 12px 0; font-size: var(--fs-xs); font-weight: var(--fw-strong); color: var(--amber-ink); grid-column: 1 / -1; }
.studio-tried svg { flex: none; margin-top: 1px; }
.studio-why { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 0 0 12px; padding: 9px 12px; border-radius: 12px; background: var(--band); color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.4; }
.studio-why svg { flex: none; color: var(--navy); }
.studio-why .grow { min-width: 220px; }
.studio-why.is-shown { background: var(--teal-soft); color: var(--teal-deep); font-weight: var(--fw-strong); }

/* redesigned step */
.studio-result { padding: 11px 14px 12px 16px; border-left: 1px solid var(--hairline); min-width: 0; display: flex; flex-direction: column; gap: 6px; transition: background .25s; }
.studio-result.is-agent { background: linear-gradient(135deg, #E6F7F3, #F2FAF9); }
.studio-result.is-gate { background: linear-gradient(135deg, #FDF1D8, #FEF8EC); }
.studio-result.is-human { background: #F1F4F7; }
.studio-result.is-eliminate { background: repeating-linear-gradient(135deg, #F4F6F8 0 8px, #FAFBFC 8px 16px); }
.studio-result.is-open { background: #fff; }
.studio-result-head { display: flex; align-items: center; gap: 8px; font-size: var(--fs-sm); font-weight: var(--fw-bold); color: var(--ink); line-height: 1.25; }
.studio-result-ico { flex: none; display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; background: var(--band-2); color: var(--muted); }
.studio-result.is-agent .studio-result-ico { background: var(--teal-ink); color: #fff; }
.studio-result.is-gate .studio-result-ico { background: var(--amber); color: var(--navy-2); }
.studio-result.is-human .studio-result-ico { background: var(--sky); color: #fff; }
.studio-result.is-eliminate .studio-result-ico { background: var(--ink-2); color: #fff; }
.studio-result.is-open .studio-result-head { color: var(--muted); }
.studio-result.is-eliminate .studio-result-head { color: var(--ink-2); }
.studio-result-text { font-size: var(--fs-sm); line-height: 1.42; color: var(--ink-2); margin: 0; }
.studio-result.is-open .studio-result-text { color: var(--muted); }
.studio-result-needs { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.studio-mini-lbl { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.studio-result-needs .studio-mini-lbl { margin-right: 2px; }
.studio-step-fb { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.studio-step-fb li { display: flex; gap: 6px; align-items: flex-start; font-size: var(--fs-sm); line-height: 1.35; font-weight: var(--fw-medium); padding: 5px 8px; border-radius: 8px; background: rgba(255, 255, 255, .75); }
.studio-step-fb li .ico { flex: none; margin-top: 1px; }
.studio-step-fb .is-bad { color: var(--salmon-ink); background: var(--salmon-soft); }
.studio-step-fb .is-warn { color: var(--amber-ink); background: rgba(253, 243, 223, .9); }
.studio-step-fb .is-good { color: var(--teal-deep); background: rgba(224, 245, 241, .9); }
.studio-ref { margin-top: auto; display: flex; align-items: center; gap: 6px; font-size: var(--fs-xs); color: var(--ink-2); padding-top: 6px; border-top: 1px dashed rgba(0, 57, 95, .15); }
.studio-ref b { color: var(--ink); }
.studio-ref-v { margin-left: auto; display: inline-flex; align-items: center; gap: 3px; font-weight: var(--fw-bold); font-size: var(--fs-xs); letter-spacing: .05em; text-transform: uppercase; }
.studio-ref.is-match .studio-ref-v { color: var(--teal-ink); }
.studio-ref.is-diff .studio-ref-v { color: var(--salmon-ink); }

/* need chips */
.studio-need { display: grid; grid-template-columns: minmax(0, 1fr) 72px 38px; gap: 10px; align-items: center; font-size: var(--fs-sm); padding: 5px 0; }
.studio-need + .studio-need { border-top: 1px solid var(--hairline); }
.studio-need-name { font-weight: var(--fw-bold); color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.studio-need-name::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 7px; background: currentColor; vertical-align: 1px; }
.studio-need.is-go .studio-need-name::before { color: var(--teal-ui); }
.studio-need.is-mid .studio-need-name::before { color: var(--amber-ui); }
.studio-need.is-base .studio-need-name::before { color: var(--salmon-ui); }
.studio-need-meter { display: block; height: 6px; border-radius: 99px; background: var(--band-2); overflow: hidden; }
.studio-need-meter i { display: block; height: 100%; border-radius: 99px; background: var(--teal-ui); transition: width .5s var(--ease); }
.studio-need.is-mid .studio-need-meter i { background: var(--amber-ui); }
.studio-need.is-base .studio-need-meter i { background: var(--salmon-ui); }
.studio-need-v { font-size: var(--fs-xs); font-weight: var(--fw-strong); text-align: right; font-variant-numeric: tabular-nums; }
.studio-need.is-go .studio-need-v { color: var(--teal-ink); }
.studio-need.is-mid .studio-need-v { color: var(--amber-ink); }
.studio-need.is-base .studio-need-v { color: var(--salmon-ink); }
.studio-need.is-compact { display: inline-flex; gap: 5px; padding: 1px 8px 1px 7px; border-radius: 999px; font-size: var(--fs-xs); background: #fff; box-shadow: inset 0 0 0 1px var(--hairline); border-top: 0 !important; }
.studio-need.is-compact .studio-need-name { font-weight: var(--fw-bold); }
.studio-need.is-compact .studio-need-name::before { width: 7px; height: 7px; margin-right: 5px; }
.studio-need.is-compact .studio-need-v { font-size: var(--fs-xs); }

/* ---------- right panel ---------- */
.studio-card { background: #fff; border: 1px solid var(--hairline); border-radius: 14px; padding: 13px 15px; box-shadow: var(--shadow-xs); min-width: 0; }
.studio-panel > .studio-card + .studio-card, .studio-compare > * + * { margin-top: 12px; }
.studio-card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.studio-card-head h3 { font-size: var(--fs-sm); font-weight: var(--fw-bold); letter-spacing: .02em; margin: 0; flex: 1 1 auto; min-width: 0; }
.studio-card-sub { font-size: var(--fs-sm); color: var(--muted); margin: -2px 0 10px; line-height: 1.4; }
.studio-card-note { font-size: var(--fs-xs); font-weight: var(--fw-strong); margin: 0 0 8px; }
.studio-card-foot { display: flex; align-items: center; gap: 6px; font-size: var(--fs-xs); color: var(--muted); margin: 10px 0 0; padding-top: 9px; border-top: 1px solid var(--hairline); }
.studio-empty { font-size: var(--fs-sm); color: var(--muted); margin: 0; }
.studio-live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 3px rgba(0, 178, 148, .18); animation: pulse 2s infinite; flex: none; }
.studio-ref-legend { display: inline-flex; align-items: center; gap: 5px; font-size: var(--fs-xs); color: var(--muted); font-weight: var(--fw-strong); }
.studio-ref-legend b { width: 3px; height: 12px; border-radius: 2px; background: var(--navy); }

.studio-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
.studio-hero-tile { display: flex; flex-direction: column; gap: 4px; background: var(--band); border-radius: 12px; padding: 9px 11px 10px; min-width: 0; }
.studio-hero-lbl { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.studio-hero-v { font-size: var(--fs-2xl); font-weight: var(--fw-heavy); letter-spacing: -.03em; color: var(--ink); line-height: 1.05; font-variant-numeric: tabular-nums; }
.studio-hero-sub { font-size: var(--fs-xs); color: var(--muted); }
.studio-bar { position: relative; display: block; height: 7px; border-radius: 99px; background: var(--band-2); }
.studio-hero-tile .studio-bar { background: #fff; }
.studio-bar > i { display: block; height: 100%; border-radius: 99px; background: var(--teal-ui); transition: width .55s var(--ease); }
.studio-bar-navy > i { background: var(--navy); }
.studio-bar-amber > i { background: var(--amber-ui); }
.studio-bar-ref { position: absolute; top: -4px; width: 3px; height: 15px; border-radius: 2px; background: var(--navy); transform: translateX(-50%); box-shadow: 0 0 0 1.5px #fff; transition: left .4s var(--ease); }
.studio-bar-navy .studio-bar-ref { background: var(--salmon-ink); }
.studio-mrows { display: flex; flex-direction: column; gap: 7px; }
.studio-mrow { display: grid; grid-template-columns: 116px minmax(0, 1fr) 42px; gap: 10px; align-items: center; font-size: var(--fs-sm); }
.studio-mrow-lbl { font-weight: var(--fw-strong); color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.studio-mrow-v { text-align: right; font-weight: var(--fw-bold); color: var(--ink); font-variant-numeric: tabular-nums; }
.studio-counts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 11px; }
.studio-count { display: flex; flex-direction: column; gap: 1px; padding: 8px 10px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--hairline); min-width: 0; }
.studio-count-v { font-size: var(--fs-xl); font-weight: var(--fw-heavy); color: var(--ink); letter-spacing: -.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.studio-count-v small { font-size: var(--fs-xs); font-weight: var(--fw-strong); color: var(--muted); margin-left: 6px; letter-spacing: 0; }
/* No choices yet: the figures read as placeholders (muted text; meters faded, never the text). */
.studio-metrics.is-idle :is(.studio-hero-v, .studio-mrow-v, .studio-count-v) { color: var(--muted); }
.studio-metrics.is-idle .studio-bar { opacity: .5; }
.studio-count-lbl { font-size: var(--fs-xs); font-weight: var(--fw-strong); color: var(--ink-2); }
.studio-count-sub { font-size: var(--fs-xs); color: var(--muted); line-height: 1.3; }
.studio-count-sub.is-warn { display: flex; gap: 4px; align-items: flex-start; color: var(--amber-ink); font-weight: var(--fw-strong); margin-top: 2px; }
.studio-count-sub.is-warn svg { flex: none; margin-top: 1px; }
.studio-count.is-warn { box-shadow: inset 0 0 0 1px #F4DDA6; background: #FFFBF2; }
.studio-count.is-warn .studio-count-v { color: var(--amber-ink); }

/* risk exposure */
.studio-exposure { border-left: 4px solid var(--teal-ui); }
.studio-exposure.is-idle { border-left-color: var(--border); }
.studio-exposure.is-idle .studio-xmeter { opacity: .5; }
.studio-exposure.is-idle :is(.studio-card-sub, .studio-exposure-verdict) { color: var(--muted); }
.studio-exposure.is-idle .studio-exposure-v { color: var(--muted); }
.studio-shell:focus { outline: none; }
.studio-exposure.is-low { border-left-color: var(--teal-ui); }
.studio-exposure.is-material { border-left-color: var(--amber-ui); background: linear-gradient(180deg, #FFFBF2, #fff 60%); }
.studio-exposure.is-high { border-left-color: var(--salmon-ui); background: linear-gradient(180deg, #FEF3F0, #fff 60%); }
.studio-exposure-v { font-size: var(--fs-2xl); font-weight: var(--fw-heavy); letter-spacing: -.02em; font-variant-numeric: tabular-nums; color: var(--teal-ink); line-height: 1; }
.studio-exposure.is-material .studio-exposure-v { color: var(--amber-ink); }
.studio-exposure.is-high .studio-exposure-v { color: var(--salmon-ink); }
.studio-xmeter { position: relative; display: flex; height: 12px; margin: 4px 0 0; }
.studio-xzone { display: block; height: 100%; }
.studio-xzone.z-low { flex: 10; background: #C8EEE6; border-radius: 99px 0 0 99px; }
.studio-xzone.z-material { flex: 25; background: #FBE3B1; margin-left: 2px; }
.studio-xzone.z-high { flex: 65; background: #FAD0C6; margin-left: 2px; border-radius: 0 99px 99px 0; }
.studio-xmark { position: absolute; top: -5px; width: 5px; height: 22px; border-radius: 3px; background: var(--navy); transform: translateX(-50%); box-shadow: 0 0 0 2px #fff, 0 2px 6px rgba(0, 41, 65, .3); transition: left .55s var(--ease); }
.studio-xref { position: absolute; top: 14px; width: 0; height: 0; border-left: 6px solid transparent; border-right: 6px solid transparent; border-bottom: 8px solid var(--navy); transform: translateX(-50%); opacity: .55; }
.studio-xmeter.is-sm { height: 8px; }
.studio-xmeter.is-sm .studio-xmark { top: -4px; height: 16px; width: 4px; }
.studio-xscale { position: relative; height: 16px; margin-top: 3px; font-size: var(--fs-xs); color: var(--muted); font-variant-numeric: tabular-nums; }
.studio-xscale span { position: absolute; transform: translateX(-50%); }
.studio-xscale span:first-child { transform: none; }
.studio-xscale span:last-child { transform: translateX(-100%); }
.studio-exposure-verdict { font-size: var(--fs-sm); font-weight: var(--fw-strong); color: var(--ink); margin: 6px 0 0; line-height: 1.4; }
.studio-drivers { margin-top: 8px; }
.studio-drivers ul { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.studio-drivers li { font-size: var(--fs-xs); padding-left: 14px; position: relative; }
.studio-drivers li::before { content: ""; position: absolute; left: 0; top: 7px; width: 7px; height: 7px; border-radius: 2px; transform: rotate(45deg); background: var(--salmon-ui); }
.studio-drivers li.is-mid::before { background: var(--amber-ui); }
.studio-link { border: 0; background: none; padding: 0; font: inherit; color: var(--link); cursor: pointer; text-align: left; text-decoration: underline; text-decoration-color: rgba(5, 117, 144, .35); text-underline-offset: 2px; }
.studio-link:hover { color: var(--link-hover); text-decoration-color: currentColor; }

/* needs & readiness */
.studio-need-list { display: flex; flex-direction: column; }
.studio-readiness { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--hairline); display: flex; flex-direction: column; gap: 7px; }
.studio-readiness-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.studio-readiness-reach { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 10px; align-items: center; font-size: var(--fs-xs); color: var(--ink-2); font-weight: var(--fw-strong); }
.studio-reach-why { display: flex; gap: 7px; align-items: flex-start; margin: 0; font-size: var(--fs-sm); line-height: 1.45; color: var(--ink-2); }
.studio-reach-why .ico { flex: none; margin-top: 2px; color: var(--amber-ink); }
.studio-prize .studio-reach-why { grid-column: 1 / -1; color: #E6EEF4; font-size: var(--fs-xs); max-width: 80ch; }
.studio-prize .studio-reach-why .ico { color: var(--amber); }
.studio-missing ul { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.studio-missing li { display: flex; gap: 6px; align-items: center; font-size: var(--fs-xs); color: var(--salmon-ink); font-weight: var(--fw-medium); }
.studio-missing li .ico { flex: none; }

/* feedback */
.studio-fb-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.studio-fb-list li { display: flex; gap: 8px; align-items: flex-start; font-size: var(--fs-sm); line-height: 1.4; color: var(--ink-2); padding: 7px 9px; border-radius: 10px; background: var(--band); }
.studio-fb-ico { flex: none; display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; margin-top: -1px; }
.studio-fb-list .is-good { background: var(--teal-soft); }
.studio-fb-list .is-good .studio-fb-ico { background: var(--teal-ink); color: #fff; }
.studio-fb-list .is-warn { background: var(--amber-soft); }
.studio-fb-list .is-warn .studio-fb-ico { background: var(--amber); color: var(--navy-2); }
.studio-fb-list .is-bad { background: var(--salmon-soft); }
.studio-fb-list .is-bad .studio-fb-ico { background: var(--salmon-ui); color: #fff; }
.studio-fb-step { font-weight: var(--fw-bold); margin-right: 2px; }
.studio-fb-step::after { content: " —"; color: var(--muted); text-decoration: none; display: inline-block; margin-left: 3px; }

/* principles */
.studio-principles { padding: 0; }
.studio-principles-toggle { display: flex; align-items: center; gap: 8px; width: 100%; border: 0; background: none; padding: 12px 15px; font: inherit; font-weight: var(--fw-bold); font-size: var(--fs-sm); color: var(--ink); cursor: pointer; text-align: left; border-radius: 14px; }
.studio-principles-toggle:hover { background: var(--band); }
.studio-principles-toggle .ico { color: var(--teal-ink); }
.studio-principle-list { margin: 0; padding: 0 15px 14px 34px; display: flex; flex-direction: column; gap: 9px; }
.studio-principle-list li { font-size: var(--fs-sm); line-height: 1.4; color: var(--ink-2); }
.studio-principle-list b { display: block; color: var(--ink); font-size: var(--fs-sm); }
.studio-principle-list small { display: block; color: var(--muted); font-size: var(--fs-xs); margin-top: 2px; }

/* ---------- compare (after saving) ---------- */
.studio-prize {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px 24px; align-items: center; padding: 18px 22px; border-radius: 16px;
  background: linear-gradient(120deg, var(--navy-2), var(--navy) 60%, #0B4A74); color: var(--on-dark-2); position: relative; overflow: hidden;
  box-shadow: var(--shadow); animation: rise .5s var(--ease) both;
}
.studio-prize::after { content: ""; position: absolute; right: -80px; bottom: -120px; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(circle, rgba(0, 189, 157, .22), transparent 65%); pointer-events: none; }
.studio-prize > * { position: relative; z-index: 1; }
.studio-prize-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.studio-prize-kicker { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--teal-on-navy-text); }
.studio-prize-v { font-size: clamp(26px, 2.6vw, 38px); font-weight: var(--fw-bold); letter-spacing: -.03em; color: #fff; line-height: 1.1; font-variant-numeric: tabular-nums; }
.studio-prize-sub { font-size: var(--fs-sm); }
.studio-prize-ref { font-size: var(--fs-xs); color: #9FE5D8; font-weight: var(--fw-strong); }
.studio-prize-stats { display: flex; gap: 8px; }
.studio-prize-stats > div { display: flex; flex-direction: column; align-items: flex-start; padding: 8px 12px; border-radius: 12px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .12); min-width: 88px; }
.studio-prize-stats b { font-size: var(--fs-xl); font-weight: var(--fw-heavy); color: #fff; font-variant-numeric: tabular-nums; }
.studio-prize-stats span { font-size: var(--fs-xs); }
.studio-prize-reach { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; font-size: var(--fs-sm); font-weight: var(--fw-strong); color: #fff; }
.studio-prize-foot { grid-column: 1 / -1; font-size: var(--fs-xs); margin: 0; color: var(--on-dark-2); }
.studio-compare-strips { display: flex; flex-direction: column; gap: 10px; padding: 12px 14px; border-radius: 12px; background: #FBFCFD; box-shadow: inset 0 0 0 1px var(--hairline); margin-bottom: 14px; }
.studio-cs { display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 12px; align-items: start; }
.studio-cs-lbl { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding-top: 24px; }
.studio-cs + .studio-cs { padding-top: 10px; border-top: 1px dashed var(--hairline); }
/* The compare strips are narrow: a slightly smaller label that may take a third line instead of being cut. */
.studio-cs .studio-node-lbl { font-size: var(--fs-xs); -webkit-line-clamp: 3; }
.studio-compare-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 18px; align-items: start; }
.studio-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.studio-table th { text-align: left; font-size: var(--fs-xs); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); font-weight: var(--fw-bold); padding: 6px 8px; border-bottom: 1px solid var(--hairline); }
.studio-table td { padding: 6px 8px; border-bottom: 1px solid var(--hairline); vertical-align: middle; }
.studio-table tr:last-child td { border-bottom: 0; }
.studio-table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.studio-table td.delta-up, .studio-table td.delta-down, .studio-table td.delta-flat { font-weight: var(--fw-bold); }
.studio-diffs ul { list-style: none; margin: 6px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.studio-diffs li { padding: 9px 11px; border-radius: 12px; background: var(--band); }
.studio-diffs li p { font-size: var(--fs-sm); margin: 6px 0 0; color: var(--ink-2); line-height: 1.4; }
.studio-diff-choices { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 5px; }
.studio-match { display: flex; align-items: center; gap: 8px; font-weight: var(--fw-bold); color: var(--teal-deep); background: var(--teal-soft); padding: 10px 12px; border-radius: 12px; margin: 6px 0 0; font-size: var(--fs-sm); }
.studio-chip { display: inline-flex; align-items: center; gap: 5px; font-size: var(--fs-xs); font-weight: var(--fw-strong); padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.studio-chip.is-agent { background: var(--teal-soft); color: var(--teal-deep); }
.studio-chip.is-gate { background: var(--amber-soft); color: var(--amber-ink); }
.studio-chip.is-human { background: #E6ECF0; color: #3E4E5A; }
.studio-chip.is-eliminate { background: #EEF0F2; color: var(--ink-2); }
.studio-chip.is-open { background: #fff; color: var(--muted); box-shadow: inset 0 0 0 1px var(--border); }

/* HSO reference flow */
.studio-rf { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; position: relative; }
.studio-rf li { display: flex; gap: 12px; align-items: flex-start; padding: 9px 12px; border-radius: 12px; background: var(--band); position: relative; }
.studio-rf li + li::before { content: ""; position: absolute; left: 26px; top: -7px; width: 2px; height: 8px; background: var(--border); }
.studio-rf li.is-agent { background: linear-gradient(90deg, #DDF3EE, #E8F5F8); }
.studio-rf li.is-gate { background: var(--amber-soft); }
.studio-rf li.is-system { background: #EEF2F5; }
.studio-rf-ico { flex: none; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: #fff; color: var(--ink-2); }
.studio-rf li.is-agent .studio-rf-ico { background: var(--teal-ink); color: #fff; }
.studio-rf li.is-gate .studio-rf-ico { background: var(--amber); color: var(--navy-2); }
.studio-rf li.is-person .studio-rf-ico { background: var(--sky); color: #fff; }
.studio-rf-top { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.studio-rf-top b { color: var(--ink); font-size: var(--fs-sm); }
.studio-rf-actor { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.studio-rf-time { margin-left: auto; font-size: var(--fs-xs); font-weight: var(--fw-strong); color: var(--teal-deep); }
.studio-rf-text { font-size: var(--fs-sm); line-height: 1.42; color: var(--ink-2); }
.studio-compare .fieldnote { border-radius: 14px; }

/* ---------- Express ---------- */
.studio-lede { font-size: var(--fs-md); color: var(--ink-2); margin: 0 0 14px; max-width: 90ch; }
.studio-bpcards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; align-items: stretch; }
.studio-bpcard {
  display: flex; flex-direction: column; gap: 10px; background: #fff; border: 1.5px solid var(--hairline); border-radius: 18px; padding: 16px 16px 14px;
  box-shadow: var(--shadow-xs); transition: border-color .2s, box-shadow .25s, transform .25s var(--ease); position: relative; min-width: 0;
}
.studio-bpcard:hover { box-shadow: var(--shadow-sm); border-color: #C3D3DE; }
.studio-bpcard.is-gated { border-top: 4px solid var(--teal-ui); }
.studio-bpcard.is-chosen { border-color: var(--teal-ink); box-shadow: 0 0 0 4px var(--teal-soft), var(--shadow-sm); }
.studio-bpcard-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.studio-bpcard-head h3 { font-size: var(--fs-lg); margin: 0; }
.studio-bpcard-pills { display: flex; gap: 5px; flex-wrap: wrap; justify-content: flex-end; }
.studio-bpcard-desc { font-size: var(--fs-sm); color: var(--ink-2); margin: 0; line-height: 1.45; min-height: 3.9em; }
.studio-bpcard-strip { display: flex; flex-direction: column; gap: 6px; padding: 10px 10px 8px; border-radius: 12px; background: #FBFCFD; box-shadow: inset 0 0 0 1px var(--hairline); }
.studio-bpcard-strip .studio-strip-sum { font-size: var(--fs-xs); }
.studio-bpcard-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.studio-bpcard-hero > div { display: flex; flex-direction: column; background: var(--band); border-radius: 12px; padding: 8px 11px; }
.studio-bpx { padding: 8px 11px 10px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--hairline); }
.studio-bpx.is-material { background: #FFFBF2; box-shadow: inset 0 0 0 1px #F4DDA6; }
.studio-bpx.is-high { background: #FEF3F0; box-shadow: inset 0 0 0 1px #F7C8BD; }
.studio-bpx-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.studio-bpx-top b { font-size: var(--fs-lg); font-weight: var(--fw-bold); font-variant-numeric: tabular-nums; color: var(--teal-ink); }
.studio-bpx.is-material .studio-bpx-top b { color: var(--amber-ink); }
.studio-bpx.is-high .studio-bpx-top b { color: var(--salmon-ink); }
.studio-bpcard-counts { display: flex; gap: 14px; flex-wrap: wrap; font-size: var(--fs-xs); color: var(--ink-2); }
.studio-bpcard-counts b { color: var(--ink); font-size: var(--fs-md); font-variant-numeric: tabular-nums; }
.studio-bpcard-counts .is-warn, .studio-bpcard-counts .is-warn b { color: var(--amber-ink); }
.studio-bpcard-foot { margin-top: auto; padding-top: 4px; }
/* A blueprint identical to another one in this value stream: a short card that points to its twin. */
.studio-bpcard.is-twin { background: #FBFCFD; }
.studio-bpcard-same { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: 12px; background: var(--band); color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.45; }
.studio-bpcard-same > .ico { flex: none; margin-top: 1px; color: var(--navy); }
.studio-bpcard-same b { display: block; color: var(--ink); font-size: var(--fs-sm); margin-bottom: 2px; }
.studio-bpcard .studio-btn-saved { background: var(--teal-soft); border-color: var(--teal-ink); color: var(--teal-deep); cursor: default; }
.studio-bpcard .studio-step-fb li { background: var(--band); }
.studio-bpcard .studio-step-fb .is-bad { background: var(--salmon-soft); }
.studio-bpcard .studio-step-fb .is-warn { background: var(--amber-soft); }
.studio-bpcard .studio-step-fb .is-good { background: var(--teal-soft); }
.studio-matrix { margin-top: 16px; }
.studio-mx td, .studio-mx th { padding: 8px 10px; }
.studio-mx th.is-chosen, .studio-mx td.is-chosen { background: rgba(224, 245, 241, .55); }
.studio-mx td:not(:first-child), .studio-mx th:not(:first-child) { width: 17%; text-align: left; }
.studio-mx td.is-diff { position: relative; }
.studio-mx-step { display: flex; gap: 10px; align-items: flex-start; }
.studio-mx-step b { color: var(--ink); font-size: var(--fs-sm); }
.studio-mx-tags { display: flex; gap: 4px; flex-wrap: wrap; margin: 3px 0; }
.studio-mx-tags .studio-tag { font-size: var(--fs-xs); padding: 1px 7px; }
.studio-mx-legacy { font-size: var(--fs-xs); color: var(--muted); line-height: 1.35; max-width: 70ch; }
.studio-diff-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--salmon-ui); margin-left: 6px; vertical-align: 1px; }
.studio-section-title { margin: 24px 0 10px; font-size: var(--fs-lg); }
.studio-express-unlocks { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 14px; align-items: start; margin-bottom: 14px; }
.studio-express-col { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.studio-mx-ref { font-weight: var(--fw-bold); letter-spacing: .02em; text-transform: none; color: var(--teal-deep); }
.studio-mx-you { display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--teal-ink); color: #fff; vertical-align: -4px; }
.studio-mx-legend { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-xs); color: var(--muted); font-weight: var(--fw-strong); }
.studio-mx-legend .studio-diff-dot { margin: 0; }
.studio-express .studio-refflow { margin-bottom: 14px; }
.studio-express .studio-strip { position: sticky; top: 0; }

/* badge for host lists */
.studio-badge { gap: 5px; }
.studio-badge.is-none { background: var(--band); color: var(--muted); }
.studio-badge-unsaved { font-weight: var(--fw-bold); }

/* ---------- responsive (laptop first) ---------- */
@media (min-width: 1680px) {
  .studio-main { grid-template-columns: minmax(0, 1fr) 440px; }
  .studio-step { grid-template-columns: minmax(0, 1.08fr) 206px minmax(0, 1fr); }
}
@media (max-width: 1360px) {
  .studio-main { grid-template-columns: minmax(0, 1fr) 356px; }
  .studio-step { grid-template-columns: minmax(0, 1fr) 176px minmax(0, 1fr); }
  .studio-legend { display: none; }
}
@media (max-width: 1279px) {
  .studio-step { grid-template-columns: 178px minmax(0, 1fr); grid-template-areas: "legacy legacy" "choice result"; }
  .studio-legacy { grid-area: legacy; border-right: 0; border-bottom: 1px solid #EEE6DD; }
  .studio-choice { grid-area: choice; }
  .studio-choice::before { display: none; }
  .studio-result { grid-area: result; }
  .studio-bp-lbl { display: none; }
  .studio-compare-grid { grid-template-columns: minmax(0, 1fr); }
  .studio-bpcards { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
}
@media (max-width: 1100px) {
  .studio-head { flex-wrap: wrap; }
  .studio-head-side { flex-wrap: wrap; }
  .studio-main { grid-template-columns: minmax(0, 1fr) 320px; }
  .studio-bpcards { grid-template-columns: minmax(0, 1fr); }
  .studio-express-unlocks { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 1023px) {
  .studio-shell { overflow: auto; }
  .studio-main { display: block; flex: none; }
  .studio-left, .studio-panel { overflow: visible; }
  .studio-panel { border-left: 0; border-top: 1px solid var(--hairline); }
  .studio-track { overflow-x: auto; padding-bottom: 4px; }
}
@media (max-height: 820px) {
  .studio-head { padding-top: 9px; padding-bottom: 9px; }
  .studio-strip { padding-top: 8px; padding-bottom: 9px; }
}
@media print {
  .studio-overlay { display: none !important; }
}