/* ============================================================
   TIMBREL — Research / "the science" layer.
   Rides on timbrel.css tokens (colors, nav, footer, buttons, reveal).
   Shared by research.html and the #research teaser + #faq on index.html.
   Shapes use mint / sage / ink only — gold stays in type, per brand.
   ============================================================ */

/* ============================================================
   RESEARCH PAGE — hero
   ============================================================ */
.rh{padding:150px 0 30px;text-align:center}
.rh .wrap{max-width:860px}
.rh h1{font-size:clamp(2.4rem,5.2vw,4rem);font-weight:300;margin:16px 0 18px;line-height:1.03}
.rh .lead{max-width:56ch;margin:0 auto}
.rh .rh-note{margin-top:18px;font-family:var(--mono);font-size:.74rem;letter-spacing:.04em;
  color:var(--t3)}
/* signature hero infographic (the "measure it back out" loop) */
.rh-fig{max-width:760px;margin:44px auto 0}
.rh-fig svg{width:100%;height:auto}
.rh-art{width:100%;height:auto;aspect-ratio:1200/670;display:block;
  border-radius:var(--r-lg);box-shadow:var(--sh-lg)}

/* illustrated section anchor (full-width banner intro to a section) */
.rs-illo{max-width:var(--w);margin:0 auto 44px;position:relative}
.rs-illo img{width:100%;height:auto;aspect-ratio:1200/670;display:block;
  border-radius:var(--r-lg);box-shadow:var(--sh-lg)}
.band-ink .rs-illo img{box-shadow:0 30px 70px rgba(0,0,0,.35)}
.rs-illo figcaption{font-size:.82rem;color:var(--t3);margin-top:14px;text-align:center;font-style:italic}
.band-ink .rs-illo figcaption{color:var(--on-ink-2)}
/* closing CTA with a side illustration */
.rs-end-art{max-width:var(--w);margin:0 auto;display:grid;grid-template-columns:1fr 1fr;
  gap:52px;align-items:center;text-align:left}
.rs-end-art .rs-end{text-align:left;padding:0}
.rs-end-art .rs-end h2,.rs-end-art .rs-end p{margin-left:0;margin-right:0}
.rs-end-art .rs-end p{max-width:42ch}
.rs-end-art .rs-links{justify-content:flex-start}
.rs-end-art img{width:100%;height:auto;aspect-ratio:1200/670;display:block;
  border-radius:var(--r-lg);box-shadow:var(--sh-lg)}
@media(max-width:860px){
  .rs-end-art{grid-template-columns:1fr;gap:30px;text-align:center}
  .rs-end-art .rs-end,.rs-end-art .rs-end h2,.rs-end-art .rs-end p{text-align:center}
  .rs-end-art .rs-end p{margin-left:auto;margin-right:auto}
  .rs-end-art .rs-links{justify-content:center}
  .rs-end-art .rs-illo-order{order:-1}
}

/* ============================================================
   RESEARCH PAGE — a "study" block (copy + figure, alternating)
   ============================================================ */
.rs-grid{display:grid;grid-template-columns:1fr 1.06fr;gap:56px;align-items:center;
  max-width:var(--w);margin:0 auto}
.rs--flip .rs-grid{direction:rtl}
.rs--flip .rs-grid>*{direction:ltr}
.rs-copy .eyebrow{display:block;margin-bottom:14px}
.rs-copy h2{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:400;line-height:1.08}
.rs-copy .lead{margin-top:18px}
.rs-copy p.body{margin-top:16px;color:var(--t2);font-size:1.02rem;line-height:1.66}
.rs-copy p.body strong{color:var(--ink);font-weight:600}
.rs-copy em{font-style:italic}
.rs-copy .rs-cite{margin-top:18px;padding-left:16px;border-left:2px solid var(--mint-deep);
  font-family:var(--serif);font-style:italic;font-size:1.05rem;color:var(--t1);line-height:1.4}

/* a clean framed surface for an SVG diagram */
.rs-frame{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 28px;box-shadow:var(--sh-float)}
.rs-frame.ink{background:var(--ink);border-color:transparent;box-shadow:var(--sh-lg)}
.rs-frame svg{width:100%;height:auto;display:block}
figure.rs-fig{margin:0}
.rs-fig figcaption{font-size:.82rem;color:var(--t3);margin-top:14px;text-align:center;
  font-style:italic;line-height:1.5}
.band-ink .rs-fig figcaption{color:var(--on-ink-2)}

/* full-width study: centered head, then a wide figure */
.rs-wide .sec-head{margin-bottom:40px}
.rs-wide .rs-fig{max-width:920px;margin:0 auto}

@media(max-width:860px){
  .rs-grid{grid-template-columns:1fr;gap:30px}
  .rs--flip .rs-grid{direction:ltr}
}

/* ============================================================
   SHARED INFOGRAPHIC HELPERS  (typography inside SVG-adjacent chips)
   ============================================================ */
/* comparative dial rows (Biber) — HTML, not SVG, so they stay crisp + a11y */
.dialset{display:grid;gap:22px}
.dialrow{display:grid;gap:8px}
.dialrow .dl-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.dialrow .dl-name{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;
  text-transform:uppercase;color:var(--t2)}
.dialrow .dl-poles{display:flex;justify-content:space-between;font-family:var(--mono);
  font-size:.62rem;letter-spacing:.07em;text-transform:uppercase;color:var(--t3)}
.dialrow .dl-poles b{color:var(--t2);font-weight:600}
/* engraved-groove track — reads as a precision instrument */
.dialrow .dl-track{position:relative;height:8px;border-radius:var(--pill);
  background:linear-gradient(90deg,var(--sage),rgba(6,35,31,.10));
  box-shadow:inset 0 1px 2px rgba(6,35,31,.14),inset 0 -1px 0 rgba(255,255,255,.5)}
/* faint center gridline — "the safe center" the model crowds */
.dialrow .dl-track::before{content:"";position:absolute;left:50%;top:-4px;bottom:-4px;width:1px;
  border-radius:1px;background:rgba(6,35,31,.18);transform:translateX(-50%)}
/* the model's clustered default — a machined double-ring, never hides under "you" */
.dialrow .dl-ai{position:absolute;top:50%;left:var(--ai,50%);width:13px;height:13px;
  border-radius:50%;transform:translate(-50%,-50%);
  background:var(--white);border:2px solid var(--t3);
  box-shadow:inset 0 0 0 2px var(--white),inset 0 0 0 3px rgba(107,124,116,.45),var(--sh-sm)}
/* the writer's position — a machined mint knob: ink center pip + top highlight + glow */
.dialrow .dl-you{position:absolute;top:50%;left:var(--you,50%);width:15px;height:15px;
  border-radius:50%;transform:translate(-50%,-50%);
  background:radial-gradient(circle at 50% 42%,#06231f 0 1.6px,#8af0a8 2.4px);border:2px solid var(--ink);
  box-shadow:inset 0 1.5px 1px rgba(255,255,255,.55),0 0 0 4px rgba(138,240,168,.22),0 2px 6px rgba(6,35,31,.3);z-index:2}
.dial-legend{display:flex;gap:22px;justify-content:center;margin-top:26px;flex-wrap:wrap;
  font-size:.8rem;color:var(--t2)}
.dial-legend span{display:inline-flex;align-items:center;gap:8px}
.dial-legend i{width:13px;height:13px;border-radius:50%;flex:none}
.dial-legend .i-you{background:var(--mint);border:2px solid var(--ink)}
.dial-legend .i-ai{background:var(--white);border:2px solid var(--t3)}

/* the tells kill-list */
.killlist{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.kill{display:flex;gap:13px;align-items:flex-start;background:var(--canvas);
  border:1px solid var(--line);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--sh-sm);
  transition:transform .3s var(--e-out),box-shadow .3s}
.kill:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.kill .x{flex:none;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
  margin-top:1px;background:rgba(230,184,115,.20)}
.kill .x svg{width:13px;height:13px}
.kill .k-term{font-family:var(--mono);font-size:.92rem;color:var(--t1);font-weight:500;
  text-decoration:line-through;text-decoration-style:double;
  text-decoration-color:rgba(176,122,46,.8);text-decoration-thickness:1px}
.kill .k-why{font-size:.86rem;color:var(--t2);line-height:1.5;margin-top:4px}
@media(max-width:680px){.killlist{grid-template-columns:1fr}}

/* the voice-file "sandwich" — stacked layers of the MPF */
.sandwich{position:relative;display:grid;gap:10px;max-width:620px;margin:0 auto}
/* alignment brackets — the file is clamped top & bottom into one */
.sandwich::before,.sandwich::after{content:"";position:absolute;top:5px;bottom:5px;width:8px;
  border:1.5px solid var(--mint-soft);opacity:.42;pointer-events:none}
.sandwich::before{left:-18px;border-right:none;border-radius:5px 0 0 5px}
.sandwich::after{right:-18px;border-left:none;border-radius:0 5px 5px 0}
.layer{position:relative;border-radius:var(--r-md);padding:16px 20px;border:1px solid var(--line);
  background:linear-gradient(180deg,#ffffff,#f6fbf4);box-shadow:0 6px 16px rgba(0,0,0,.20)}
.layer .l-tag{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--gold-deep);display:block;margin-bottom:5px}
.layer .l-body{font-size:.94rem;color:var(--t2);line-height:1.5}
.layer .l-body code{font-family:var(--mono);font-size:.86em;color:var(--mint-deep);
  background:var(--sage);padding:1px 5px;border-radius:4px}
/* the two bread slices = the bracketed HARD RULES, top + bottom.
   On the dark section, mint "bread" clamps the light filling layers. */
.layer.bun{background:var(--mint);border-color:transparent;box-shadow:0 8px 22px rgba(138,240,168,.18)}
.layer.bun .l-tag{color:var(--mint-deep)}
.layer.bun .l-body{color:var(--ink)}
.layer.bun .l-body code{color:var(--mint-deep);background:rgba(6,35,31,.09)}
.sandwich .pin{display:flex;align-items:center;gap:9px;justify-content:center;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;color:var(--t3);margin:2px 0}
.sandwich .pin svg{width:14px;height:14px}
.band-ink .sandwich .pin{color:var(--on-ink-2)}
/* dark output section — a faint mint glow gives the flat ink depth */
.rs-output{overflow:hidden}
.rs-output::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(58% 75% at 76% 50%,rgba(138,240,168,.10),transparent 70%)}
.rs-output>.wrap{position:relative;z-index:1}
@media(max-width:860px){.sandwich::before{left:-10px}.sandwich::after{right:-10px}}

/* ============================================================
   HOMEPAGE — #research teaser
   ============================================================ */
.research-teaser .research-pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  margin-top:8px}
.pillar{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 22px;box-shadow:var(--sh-float);
  transition:transform .35s var(--e-out),box-shadow .35s}
.pillar:hover{transform:translateY(-5px);box-shadow:var(--sh-lg)}
.pillar .p-ico{width:42px;height:42px;margin-bottom:16px}
.pillar h3{font-size:1.1rem;font-weight:500;margin-bottom:7px;line-height:1.2}
.pillar p{font-size:.88rem;color:var(--t2);line-height:1.5}
.research-cta{text-align:center;margin-top:42px}
@media(max-width:900px){.research-teaser .research-pillars{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.research-teaser .research-pillars{grid-template-columns:1fr}}

/* ============================================================
   HOMEPAGE — #faq accordion (native <details>)
   ============================================================ */
.faq-wrap{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-sm);transition:box-shadow .25s,border-color .25s}
.faq[open]{box-shadow:var(--sh-md);border-color:var(--line-2)}
.faq>summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:22px 24px;font-family:var(--serif);font-size:1.18rem;color:var(--ink);line-height:1.3;
  transition:color .2s}
.faq>summary::-webkit-details-marker{display:none}
.faq>summary:hover{color:var(--mint-deep)}
.faq>summary .q-mark{flex:none;width:24px;height:24px;border-radius:50%;margin-top:2px;
  background:var(--sage);position:relative;transition:background .2s}
.faq>summary .q-mark::before,.faq>summary .q-mark::after{content:"";position:absolute;
  top:50%;left:50%;background:var(--mint-deep);border-radius:2px;transition:transform .25s var(--e-out)}
.faq>summary .q-mark::before{width:11px;height:2px;transform:translate(-50%,-50%)}
.faq>summary .q-mark::after{width:2px;height:11px;transform:translate(-50%,-50%)}
.faq[open]>summary .q-mark{background:var(--mint)}
.faq[open]>summary .q-mark::after{transform:translate(-50%,-50%) scaleY(0)}
.faq[open]>summary .q-mark::before{background:var(--ink)}
.faq-a{padding:0 24px 24px 64px}
.faq-a p{color:var(--t2);font-size:1rem;line-height:1.65;margin:0 0 .8em}
.faq-a p:last-child{margin-bottom:0}
.faq-a strong{color:var(--ink);font-weight:600}
.faq-a em{font-style:italic}
.faq-a a{color:var(--mint-deep);text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:var(--mint-soft);text-decoration-thickness:2px}
.faq-a a:hover{color:var(--ink)}
.faq-a .calc{display:inline-block;font-family:var(--mono);font-size:.84rem;color:var(--mint-deep);
  background:var(--sage);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:10px 14px;margin:.4em 0;line-height:1.5}
/* the lead question gets a touch more presence */
.faq--lead{border-color:var(--mint-deep)}
.faq--lead>summary{font-size:1.26rem}
@media(max-width:560px){
  .faq>summary{font-size:1.06rem;padding:18px 20px;gap:12px}
  .faq-a{padding:0 20px 20px 48px}
}

/* ============================================================
   RESEARCH PAGE — closing CTA
   ============================================================ */
.rs-end{text-align:center;padding:6px 0 0}
.rs-end h2{font-size:clamp(1.9rem,3.8vw,2.7rem);font-weight:300;margin-bottom:14px}
.rs-end p{color:var(--t2);max-width:50ch;margin:0 auto 28px}
.rs-end .rs-links{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;
  align-items:center;margin-top:20px}
.rs-back{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:.78rem;letter-spacing:.06em;color:var(--t3)}
.rs-back:hover{color:var(--mint-deep)}