/* ==========================================================================
   Ranjit Lall — stylesheet
   Palette   Oxford navy #002147 · verdigris #2E7D6E · ink #1F2B36
   Accents   gold #F0B429 · coral #E8604C · violet #7B5EA7 · cyan #3AA9D6
   Type      Source Serif 4 (display) · IBM Plex Sans (body) · IBM Plex Mono (labels)

   Two rules worth remembering, because both have caused visible bugs:
   1. A flex or grid child stretches to fill its cross axis unless told not to.
      Images need explicit dimensions; badges need justify-self: start.
   2. A modifier for a dark ground must undo every property the light base set,
      background included — not just colour.
   ========================================================================== */

:root{
  --navy:#002147; --navy-deep:#001730; --navy-soft:#12365c;
  --verdigris:#2e7d6e; --verdigris-light:#4a9e8d;
  --gold:#f0b429; --gold-deep:#9a6410;
  --coral:#e8604c; --coral-deep:#b8391f;
  --violet:#7b5ea7; --cyan:#3aa9d6;
  --ink:#1f2b36; --slate:#546475;
  --mist:#f4f6f8; --mist-deep:#e8edf2; --rule:#dde4ec; --paper:#ffffff;
  --display:"Source Serif 4",Georgia,serif;
  --body:"IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --measure:68ch; --wrap:1120px;
  --gutter:clamp(1.25rem,4vw,3rem);
  --section-y:clamp(1.9rem,3.2vw,2.9rem);

  /* Hero and panel tints. These were a switchable palette during design; the
     navy hero was chosen, so its values now live here as the only palette. */
  --tint:#f4f6f8;
  --hero-bg:linear-gradient(160deg,#002147 0%,#001730 100%);
  --hero-ink:#ffffff;
  --hero-lede:#b9cade;
  --hero-kicker:var(--gold);
  --hero-rule:rgba(255,255,255,.18);
}


*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:7rem}
body{margin:0;font-family:var(--body);font-size:1rem;line-height:1.58;
  color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--verdigris);text-decoration-thickness:1px;text-underline-offset:.2em}
a:hover{color:var(--navy)}

/* Keyboard focus. Never remove this outline — it is how keyboard users see
   where they are on the page. */
:focus-visible{outline:3px solid var(--verdigris);outline-offset:3px;border-radius:2px}

/* The skip link lets keyboard users jump past the header straight to the
   content. It must sit off-screen until focused, NOT be deleted: without
   these two rules it renders as an ordinary visible link above the header. */
.skip-link{position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--navy);color:#fff;padding:.7rem 1.2rem;text-decoration:none}
.skip-link:focus{left:0}

/* Text present for screen readers only. */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.12;
  letter-spacing:-.02em;color:var(--navy);margin:0 0 .45em;text-wrap:balance}
h1{font-size:clamp(2rem,1.4rem+2.3vw,3rem)}
h2{font-size:clamp(1.45rem,1.1rem+1.4vw,2rem)}
h3{font-size:clamp(1.02rem,.95rem+.4vw,1.18rem)}
p{margin:0 0 .72em;max-width:var(--measure)}
p:last-child{margin-bottom:0}
strong{font-weight:600;color:var(--navy)}

.eyebrow{font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--verdigris);margin:0 0 .7rem;display:block}
.hl{color:var(--gold-deep);font-weight:600}
.hl--coral{color:var(--coral-deep);font-weight:600}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:var(--section-y)}
.section--tint{background:var(--tint)}
/* each section gets its own soft panel colour, keyed to its accent rule */
#themes{background:#eef3fa}
#book{background:#faf7f1}
#publications{background:#f5f2fa}
#data{background:#edf5f2}
#contact{background:#fdf7ea}
/* abstract panels need to sit on whatever the section colour is */
#publications details.abs p{background:#fff}
.section-head{max-width:56ch;margin-bottom:clamp(1rem,1.8vw,1.4rem)}
.section-head p{color:var(--slate)}
/* a short gradient rule under each section heading, tinted per section */
.section-head h2::after{content:"";display:block;width:76px;height:4px;border-radius:100px;
  margin-top:.85rem;background:linear-gradient(90deg,var(--accent-a),var(--accent-b))}
.section{--accent-a:var(--gold);--accent-b:var(--coral)}
#about{--accent-a:var(--gold);--accent-b:#f2c45c}
#themes{--accent-a:var(--coral);--accent-b:var(--violet)}
#cts{--accent-a:var(--cyan);--accent-b:var(--verdigris-light)}
#publications{--accent-a:var(--violet);--accent-b:var(--cyan)}
#data{--accent-a:var(--verdigris);--accent-b:var(--cyan)}
#contact{--accent-a:var(--gold);--accent-b:var(--coral)}
#about .eyebrow{color:var(--gold-deep)}
#themes .eyebrow{color:var(--coral-deep)}
#publications .eyebrow{color:#5c4382}
#data .eyebrow{color:var(--verdigris)}
#contact .eyebrow{color:#1f6a8c}
/* thin accent bar across the very top of the page */
.topbar{height:4px;background:linear-gradient(90deg,var(--gold),var(--coral) 34%,var(--violet) 67%,var(--cyan))}

/* ---- Oxford strip ---- */
.oxstrip{background:var(--navy);color:#cfdae6}
.oxstrip__inner{display:flex;align-items:center;justify-content:space-between;
  gap:1rem;min-height:44px;flex-wrap:wrap}
.oxstrip__brand{display:flex;align-items:center;gap:.6rem;color:#e8eef5;
  text-decoration:none;font-size:.78rem;letter-spacing:.06em}
.oxstrip__brand img{height:26px;width:auto}
.oxstrip__right{display:flex;align-items:center;gap:.85rem;font-family:var(--mono);
  font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:#9db4cc}
.oxstrip__right a{color:#9db4cc;text-decoration:none}
.oxstrip__right a:hover{color:var(--gold)}
.oxstrip__rule{width:1px;height:22px;background:rgba(255,255,255,.25);flex:0 0 1px}
/* Navy-on-white artwork sits in its own white tile rather than being reversed —
   reversing an institution's logo without their approved variant is not ours to do. */
/* the white lockup is designed for a dark ground, so it needs no tile */
.oxstrip__cts img{height:26px;width:auto;transition:opacity .18s ease}
.oxstrip__cts:hover img{opacity:.8}
@media(max-width:700px){.oxstrip__right span.hide-sm{display:none}}

/* ---- Header ---- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;
  gap:1.5rem;min-height:4.2rem;flex-wrap:wrap}
.brand{font-family:var(--display);font-size:1.3rem;font-weight:600;color:var(--navy);
  text-decoration:none;letter-spacing:-.01em;line-height:1.1}
.brand span{display:block;font-family:var(--mono);font-size:.6rem;font-weight:400;
  letter-spacing:.16em;text-transform:uppercase;color:var(--slate);margin-top:.25rem}
.nav{display:flex;gap:1.4rem;flex-wrap:wrap}
.nav a{font-family:var(--display);font-size:1.02rem;font-weight:600;letter-spacing:-.005em;
  color:var(--navy);text-decoration:none;padding:.2rem 0;border-bottom:2px solid transparent}
.nav a:hover{border-bottom-color:var(--verdigris);color:var(--verdigris)}
/* No mobile menu button: with five short items the nav simply wraps onto a
   second line on narrow screens, which needs no JavaScript and cannot break. */
@media(max-width:760px){
  .site-header__inner{gap:.6rem;padding-block:.5rem}
  .nav{gap:.5rem .9rem;width:100%}
  .nav a{font-size:.95rem}
}

/* ---- Hero ---- */
.hero{position:relative;overflow:hidden;background:var(--hero-bg);
  padding-block:clamp(2.25rem,4vw,3.25rem);border-bottom:1px solid var(--hero-rule)}
.hero > .wrap{position:relative;z-index:1}
.hero__motif{position:absolute;top:-38%;right:-14%;width:min(820px,72%);height:auto;
  opacity:.62;pointer-events:none;z-index:0}
/* Gentle staggered reveal, mirroring the CTS hero artwork. Everything ends at
   the same values the static version uses, so reduced motion loses nothing. */
.hero__motif .m-glow{opacity:0;animation:mGlow 1400ms ease forwards}
.hero__motif .m-panels{opacity:0;animation:mPanels 1100ms ease 200ms forwards}
.hero__motif .m-rings{opacity:0;animation:mRings 1000ms ease 380ms forwards}
.hero__motif .m-axis{opacity:0;animation:mAxis 900ms ease 620ms forwards}
.hero__motif .m-node{opacity:0;animation:mNode 700ms ease forwards}
.hero__motif .m-node:nth-of-type(1){animation-delay:820ms}
.hero__motif .m-node:nth-of-type(2){animation-delay:930ms}
.hero__motif .m-node:nth-of-type(3){animation-delay:1040ms}
.hero__motif .m-node:nth-of-type(4){animation-delay:1150ms}
.hero__motif .m-node:nth-of-type(5){animation-delay:1260ms}
@keyframes mGlow{to{opacity:1}}
@keyframes mPanels{to{opacity:1}}
@keyframes mRings{to{opacity:1}}
@keyframes mAxis{to{opacity:1}}
@keyframes mNode{from{opacity:0;transform:scale(.4)}to{opacity:1;transform:scale(1)}}
.hero__motif .m-node{transform-box:fill-box;transform-origin:center}
@media(prefers-reduced-motion:reduce){
  .hero__motif .m-glow,.hero__motif .m-panels,.hero__motif .m-rings,
  .hero__motif .m-axis,.hero__motif .m-node{opacity:1;animation:none;transform:none}
}
/* navy-ground artwork: it would disappear against the cream hero */
@media(max-width:900px){.hero__motif{opacity:.35;right:-40%;top:-10%;width:110%}}
.hero__inner{display:grid;gap:clamp(2rem,4vw,3.5rem);grid-template-columns:1fr;
  align-items:center}
@media(min-width:900px){.hero__inner{grid-template-columns:1.15fr .85fr}}
.hero__inner{gap:clamp(1.5rem,3vw,2.5rem)}
.hero__kicker{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--hero-kicker);margin-bottom:.8rem;display:block}
.hero h1{color:var(--hero-ink);margin-bottom:.7rem}
.hero h1 .thin{display:block;font-family:var(--display);font-weight:300;font-style:italic;
  font-size:.46em;color:var(--verdigris);margin-top:.5rem;letter-spacing:0}
.hero h1 .thin{color:var(--gold)}
.hero__lede{font-size:1.1rem;color:var(--hero-lede);max-width:46ch;margin-bottom:1.25rem}
.hero__lede strong{color:#fff}
.hero__actions{display:flex;flex-wrap:wrap;gap:.75rem}
.hero__portrait{position:relative;width:100%;max-width:236px;margin-inline:auto;border-radius:50%;
  border:5px solid rgba(255,255,255,.85);
  box-shadow:0 18px 44px rgba(0,33,71,.22)}
.hero__portrait{border-color:rgba(255,255,255,.14)}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--body);
  font-size:.9rem;font-weight:500;padding:.7rem 1.35rem;border-radius:3px;
  text-decoration:none;border:1px solid transparent;transition:.18s ease}
.btn--primary{background:var(--verdigris);color:#fff}
.btn--primary:hover{background:var(--verdigris-light);color:#fff}
.btn--outline{border-color:var(--navy);color:var(--navy);font-weight:700;background:#fff}
.btn--outline:hover{background:var(--navy);color:#fff}
/* white outline buttons belong only on dark grounds — scoping this to the page
   palette turned every button on the page white. Scope it to the dark blocks. */
.hero .btn--outline,.bookhero .btn--outline,.section--navy .btn--outline{
  background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.hero .btn--outline:hover,.bookhero .btn--outline:hover,.section--navy .btn--outline:hover{
  background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn--sm{font-size:.78rem;padding:.34rem .8rem;border-radius:100px}

/* ---- About + affiliation chips ---- */
.about__grid{display:grid;gap:clamp(1.25rem,2.5vw,2.25rem)}
@media(min-width:900px){.about__grid{grid-template-columns:1.4fr .6fr;align-items:start}}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.45rem}
.chip{display:flex;gap:.7rem;align-items:baseline;font-size:.88rem;color:var(--slate);
  padding-bottom:.45rem;border-bottom:1px solid var(--rule)}
.chip:last-child{border-bottom:0}
.chip__k{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--verdigris);flex:0 0 5.2rem}
.chip a{color:var(--navy);text-decoration:none;border-bottom:1px solid var(--rule)}
.chip a:hover{color:var(--verdigris);border-bottom-color:var(--verdigris)}

/* ---- Research themes ---- */
.themes{display:grid;gap:clamp(.8rem,1.5vw,1.1rem);grid-template-columns:1fr}
@media(min-width:760px){.themes{grid-template-columns:1fr 1fr}}
.theme{background:var(--paper);border:1px solid var(--rule);border-top:4px solid var(--gold);
  border-radius:4px;padding:clamp(1rem,1.8vw,1.35rem)}
.theme:nth-child(2){border-top-color:var(--coral)}
.theme:nth-child(3){border-top-color:var(--cyan)}
.theme:nth-child(4){border-top-color:var(--violet)}
.theme__n{font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--gold-deep);display:inline-block;margin-bottom:.85rem;font-weight:500;
  padding:.26rem .62rem;border-radius:100px;background:#fdf4e2;border:1px solid #f0dcae}
.theme:nth-child(2) .theme__n{background:#fdeeea;border-color:#f4c3ba}
.theme:nth-child(3) .theme__n{background:#e9f4fa;border-color:#b9dcea}
.theme:nth-child(4) .theme__n{background:#f1ecf7;border-color:#cfc2e2}
.theme h3{font-weight:700}
.theme:nth-child(2) .theme__n{color:var(--coral-deep)}
.theme:nth-child(3) .theme__n{color:#1f6a8c}
.theme:nth-child(4) .theme__n{color:#5c4382}
.theme p{font-size:.9rem;color:var(--slate)}

/* ---- Book feature ---- */
.book{display:grid;gap:clamp(1.25rem,2.6vw,2.1rem);align-items:center}
@media(min-width:820px){.book{grid-template-columns:230px 1fr}}
.book__coverlink{display:block;max-width:228px;margin-inline:auto}
.book__cover{width:100%;max-width:228px;margin-inline:auto;border-radius:2px;
  border:1px solid var(--rule);
  box-shadow:0 18px 40px rgba(0,33,71,.26), 0 2px 6px rgba(0,33,71,.12)}
.book__meta{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--verdigris);margin-bottom:.6rem;display:block}
.book blockquote{margin:.9rem 0 1rem;padding-left:1.1rem;border-left:3px solid var(--gold);
  font-family:var(--display);font-size:1.05rem;font-style:italic;color:var(--navy);max-width:56ch}

/* ---- Publication entries ---- */
.pubs{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.9rem}
.pubs-label{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--slate);margin:0 0 1.2rem;padding-bottom:.5rem;border-bottom:1px solid var(--rule)}
.pubs + .pubs-label{margin-top:2.6rem}
.pub{display:grid;gap:.4rem 1.4rem;grid-template-columns:1fr;
  padding-bottom:.9rem;border-bottom:1px solid var(--rule)}
.pub:last-child{border-bottom:0;padding-bottom:0}
@media(min-width:760px){.pub{grid-template-columns:5.5rem 1fr}}
.badge{display:inline-block;font-family:var(--mono);font-size:.66rem;font-weight:500;
  letter-spacing:.08em;padding:.28rem .6rem;border-radius:3px;color:#fff;
  text-decoration:none;white-space:nowrap;align-self:start;justify-self:start}
/* Venue badges. One colour per outlet so the list is scannable at a glance.
   Every abbr used in the .bib files needs a rule here; unknown ones fall back
   to navy via .badge itself. */
.badge{background:#0d3a63}
.badge--apsr{background:#b8391f}
.badge--ajps{background:#1f6a8c}
.badge--io{background:#0d3a63}
.badge--cps{background:#7b5ea7}
.badge--bjps{background:#2e7d6e}
.badge--isq{background:#9a6410}
.badge--pa{background:#4a5b6b}
.badge--jss{background:#5c4382}
.badge--ripe{background:#b8391f}
.badge--reggov{background:#1f6a8c}
.badge--pm{background:#4a5b6b}
.badge--cup{background:#0d3a63}
.badge--aigi{background:#2e7d6e}
.badge--arxiv{background:#9a6410}
.badge--diis{background:#4a5b6b}
.pub__title{font-family:var(--display);font-size:1.12rem;font-weight:600;
  color:var(--navy);line-height:1.3;margin:0 0 .3rem}
.pub__authors{font-size:.92rem;color:var(--slate);margin:0 0 .2rem}
.pub__authors em{color:var(--navy);font-style:normal;font-weight:600}
.pub__venue{font-family:var(--display);font-style:italic;font-size:.94rem;
  color:var(--slate);margin:0 0 .7rem}
.pub__links{display:flex;flex-wrap:wrap;gap:.45rem}
.pub__links a,.pub__links summary{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;
  text-transform:uppercase;padding:.3rem .7rem;border:1px solid var(--rule);
  border-radius:100px;color:var(--navy);text-decoration:none;background:var(--paper);
  cursor:pointer;list-style:none}
.pub__links a:hover,.pub__links summary:hover{border-color:var(--verdigris);color:var(--verdigris)}
details.abs{margin-top:.7rem}
details.abs summary{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--verdigris);cursor:pointer;list-style:none;
  display:inline-block;border:1px solid var(--rule);border-radius:100px;padding:.3rem .7rem}
details.abs summary::-webkit-details-marker{display:none}
details.abs[open] summary{background:var(--verdigris);color:#fff;border-color:var(--verdigris)}
details.abs p{margin-top:.9rem;font-size:.93rem;color:var(--slate);
  background:var(--tint);padding:1rem 1.15rem;border-radius:4px;max-width:none}

/* ---- Data / software cards ---- */
.cards{display:grid;gap:.85rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr))}
.card{background:var(--paper);border:1px solid var(--rule);border-radius:4px;
  padding:1rem 1.15rem;display:flex;flex-direction:column}
.card h3{font-size:1.05rem;margin-bottom:.4rem;font-weight:700}
.card__kind{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--verdigris);display:block;margin-bottom:.5rem}
.card:nth-child(2) .card__kind{color:var(--coral-deep)}
.card:nth-child(3) .card__kind{color:#5c4382}
.card:nth-child(4) .card__kind{color:#1f6a8c}
/* .card is a flex column, so an image stretches to full width unless it is
   told not to — align-self is what keeps the logo square. */
.card__head{display:flex;align-items:center;gap:.7rem;margin-bottom:.4rem}
.card__head h3{margin:0}
.card__logo{width:42px;height:42px;flex:0 0 42px;align-self:center;object-fit:contain}
.card h3 a{color:inherit;text-decoration:none;border-bottom:2px solid transparent}
.card h3 a:hover{color:var(--verdigris);border-bottom-color:var(--verdigris)}
.card__use{font-size:.76rem;color:var(--slate);margin-bottom:.7rem;line-height:1.45;
  padding-top:.55rem;border-top:1px dashed var(--rule)}
.card__use a{color:var(--navy);text-decoration:none;border-bottom:1px solid var(--rule)}
.card__use a:hover{color:var(--verdigris);border-bottom-color:var(--verdigris)}
.card p{font-size:.86rem;color:var(--slate);margin-bottom:.7rem}
.card__foot{margin-top:auto}

/* ---- Contact ---- */
.section--navy{background:linear-gradient(155deg,#002147 0%,#001730 100%);color:#c3d3e4}
.section--navy h2,.section--navy h3{color:#fff}
.section--navy p{color:#b3c6da}
.section--navy strong{color:var(--gold)}
.section--navy .eyebrow{color:var(--gold)}
.section--navy .hl{color:var(--gold)}
.section--navy .section-head p{color:#a9bdd2}
.cts{display:grid;gap:clamp(1.1rem,2.2vw,2rem);align-items:center}
@media(min-width:880px){.cts{grid-template-columns:1.05fr .95fr}}
.cts__lockup{height:64px;width:auto;margin-bottom:1.5rem}
.cts__art{width:100%;max-width:420px;margin-inline:auto}
.contact__grid{display:grid;gap:2rem}
@media(min-width:760px){.contact__grid{grid-template-columns:1fr 1fr}}
address{font-style:normal;color:var(--slate);font-size:.95rem;line-height:1.7}

/* ---- Footer ---- */
.affil{background:var(--paper);border-top:1px solid var(--rule);padding-block:1.6rem}
.affil__label{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--slate);text-align:center;margin:0 0 1rem;max-width:none}
.affil__row{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;
  gap:clamp(1.75rem,5vw,3.5rem)}
.affil__row a{display:inline-flex;align-items:center;opacity:.9;transition:opacity .18s ease}
.affil__row a:hover{opacity:1}
.affil__row img{width:auto;object-fit:contain}
.affil__sjc img{height:60px}
.affil__dpir img{height:34px}
.affil__oms img{height:52px}
.affil__aigi img{height:38px}
.site-footer{background:var(--navy-deep);color:#9db4cc;padding-block:1.9rem;font-size:.88rem}
.site-footer a{color:#cfdae6;text-decoration:none}
.site-footer a:hover{color:var(--gold)}
.footer__inner{display:flex;justify-content:space-between;gap:1.5rem;
  align-items:center;flex-wrap:wrap}
.social{display:flex;gap:1.1rem;align-items:center}
.social a{display:inline-flex;color:#cfdae6}
.social svg{width:20px;height:20px;fill:currentColor}
.social a:hover{color:var(--gold)}


/* ---- Interior page chrome ---- */
.pagehero{position:relative;background:linear-gradient(160deg,#002147 0%,#001730 100%);
  color:#c3d3e4;padding-block:clamp(1.5rem,2.6vw,2.2rem)}
.pagehero h1{color:#fff;font-size:clamp(1.8rem,1.3rem+1.9vw,2.6rem);margin-bottom:.35rem}
.pagehero .hero__kicker{color:var(--gold);margin-bottom:.5rem}
.pagehero p{color:#b3c6da;max-width:56ch;margin:0}

.sectionnav{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.sectionnav__inner{display:flex;align-items:center;gap:1rem;min-height:2.7rem;flex-wrap:wrap}
.sectionnav__label{font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--slate);flex-shrink:0}
.sectionnav ul{list-style:none;display:flex;gap:.4rem;margin:0;padding:0;flex-wrap:wrap}
.sectionnav a{font-family:var(--display);font-size:.85rem;font-weight:700;color:var(--gold-deep);
  text-decoration:none;padding:.24rem .68rem;border:1px solid #f0dcae;background:#fdf6e7;
  border-radius:100px;white-space:nowrap}
.sectionnav a:hover{background:var(--gold);border-color:var(--gold);color:var(--navy)}
@media(max-width:900px){.sectionnav__label{display:none}
  .sectionnav__inner{overflow-x:auto;flex-wrap:nowrap}.sectionnav ul{flex-wrap:nowrap}}
[id]{scroll-margin-top:4rem}

/* ---- Publication list ---- */
.yr{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--slate);margin:1.5rem 0 .6rem;padding-bottom:.3rem;border-bottom:1px solid var(--rule)}
.yr:first-of-type{margin-top:0}
.pub__title{font-size:1.02rem}
/* One row of controls. A closed <details> sits inline with the links; an open one
   claims the full row width so its panel drops below instead of stretching it. */
.pub__actions{display:flex;flex-wrap:wrap;gap:.4rem;align-items:flex-start}
.pub__actions > a{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  text-transform:uppercase;padding:.28rem .68rem;border:1px solid var(--rule);
  border-radius:100px;color:var(--navy);text-decoration:none;background:#fff}
.pub__actions > a:hover{border-color:var(--verdigris);color:var(--verdigris)}
.pub__actions > details{margin:0}
.pub__actions > details[open]{width:100%;order:9}
details.abs p{margin-top:.6rem}
details.bib{margin-top:0}
details.bib summary{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--navy);cursor:pointer;list-style:none;display:inline-block;
  border:1px solid var(--rule);border-radius:100px;padding:.28rem .68rem;background:#fff}
details.bib summary::-webkit-details-marker{display:none}
details.bib[open] summary{background:var(--navy);color:#fff;border-color:var(--navy)}
details.bib pre{margin:.7rem 0 0;background:#0f2438;color:#cfe3f5;border-radius:4px;
  padding:.9rem 1rem;overflow-x:auto;font-family:var(--mono);font-size:.72rem;line-height:1.5}
.pubcount{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate)}
.bookrow{display:grid;gap:1.1rem;grid-template-columns:1fr;align-items:start}
@media(min-width:700px){.bookrow{grid-template-columns:1fr 120px}}
.bookrow__cover{width:120px;max-width:100%;border:1px solid var(--rule);border-radius:2px;
  box-shadow:0 8px 20px rgba(0,33,71,.2)}
.bookrow .pubs{margin:0}
.bookrow .pub{padding-bottom:0;border-bottom:0}

/* ---- Data page ---- */
.ds{display:grid;gap:.9rem}
.dataset{background:#fff;border:1px solid var(--rule);border-left:4px solid var(--verdigris);
  border-radius:4px;padding:1rem 1.2rem}
.dataset:nth-child(2){border-left-color:var(--coral)}
.dataset:nth-child(3){border-left-color:var(--cyan)}
.dataset:nth-child(4){border-left-color:var(--violet)}
.dataset:nth-child(5){border-left-color:var(--gold)}
.dataset h3{margin-bottom:.3rem;font-weight:700}
.dataset h3 a{color:inherit;text-decoration:none}
.dataset h3 a:hover{color:var(--verdigris)}
.dataset p{font-size:.9rem;color:var(--slate);margin-bottom:.6rem;max-width:78ch}
.dataset__meta{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.pkg{display:grid;gap:.55rem}
.pkgrow{display:flex;flex-wrap:wrap;gap:.5rem .9rem;align-items:baseline;background:#fff;
  border:1px solid var(--rule);border-radius:4px;padding:.6rem .95rem}
.pkgrow__n{font-family:var(--display);font-weight:700;font-size:.95rem}
.pkgrow__n a{color:var(--navy);text-decoration:none}
.pkgrow__n a:hover{color:var(--verdigris)}
.pkgrow__lang{font-family:var(--mono);font-size:.6rem;letter-spacing:.08em;text-transform:uppercase;
  color:#fff;background:var(--verdigris);border-radius:3px;padding:.16rem .45rem}
.pkgrow__d{font-size:.85rem;color:var(--slate)}
.suite{display:flex;gap:1rem;align-items:center;background:#fff;border:1px solid var(--rule);
  border-radius:4px;padding:1rem 1.2rem;margin-bottom:.9rem}
.suite img{width:54px;height:54px;flex:0 0 54px;align-self:center;object-fit:contain}
.suite p{margin:0;font-size:.88rem;color:var(--slate)}

/* ---- Book page ---- */
.bookhero{position:relative;overflow:hidden;
  background:linear-gradient(160deg,#002147 0%,#001730 100%);
  color:#c3d3e4;padding-block:clamp(1.75rem,3vw,2.5rem);}
.bookhero h1{color:#fff;font-size:clamp(2rem,1.3rem+2.4vw,3.1rem)}
.bookhero .hero__kicker{color:var(--gold)}
.bookhero__inner{display:grid;gap:clamp(1.25rem,2.6vw,2.1rem);align-items:center}
@media(min-width:860px){.bookhero__inner{grid-template-columns:200px 1fr}}
.bookhero__cover{width:100%;max-width:200px;margin-inline:auto;border-radius:2px;
  box-shadow:0 22px 48px rgba(0,0,0,.42)}
.bookhero__sub{font-family:var(--display);font-style:italic;font-size:1.15rem;
  color:var(--gold);margin-bottom:1rem}
.bookhero p{color:#b3c6da;max-width:52ch}
.bookhero .hero__actions{margin-top:1.35rem}

/* sticky in-page nav, as on long CTS pages */
.sectionnav{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.sectionnav__inner{display:flex;align-items:center;gap:1rem;min-height:2.8rem;flex-wrap:wrap}
.sectionnav__label{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--slate);flex-shrink:0}
.sectionnav ul{list-style:none;display:flex;gap:.45rem;margin:0;padding:0;flex-wrap:wrap}
.sectionnav a{font-family:var(--display);font-size:.88rem;font-weight:700;
  color:var(--gold-deep);text-decoration:none;padding:.28rem .75rem;
  border:1px solid #f0dcae;background:#fdf6e7;border-radius:100px;white-space:nowrap}
.sectionnav a:hover{background:var(--gold);border-color:var(--gold);color:var(--navy)}
@media(max-width:900px){.sectionnav__label{display:none}
  .sectionnav__inner{overflow-x:auto;flex-wrap:nowrap}.sectionnav ul{flex-wrap:nowrap}}
[id]{scroll-margin-top:5rem}

/* argument chapters */
.argument{display:grid;gap:clamp(1.25rem,2.5vw,2.25rem);align-items:start}
@media(min-width:900px){.argument{grid-template-columns:1fr 15rem}}
.factbox{background:#fff;border:1px solid var(--rule);border-top:4px solid var(--verdigris);
  border-radius:4px;padding:1rem 1.15rem}
.factbox dl{margin:0;display:grid;gap:.5rem}
.factbox dt{font-family:var(--mono);font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--verdigris)}
.factbox dd{margin:0 0 .45rem;font-size:.86rem;color:var(--ink);
  padding-bottom:.45rem;border-bottom:1px solid var(--rule)}
.factbox dd:last-child{border-bottom:0;margin-bottom:0}
.chapters{display:grid;gap:.55rem;grid-template-columns:1fr}
@media(min-width:760px){.chapters{grid-template-columns:1fr 1fr}}
.chapter{display:flex;gap:.75rem;align-items:baseline;background:#fff;
  border:1px solid var(--rule);border-radius:4px;padding:.55rem .9rem}
.chapter__n{font-family:var(--mono);font-size:.68rem;color:var(--verdigris);flex:0 0 1.4rem}
.chapter__t{font-size:.88rem;color:var(--ink);margin:0;max-width:none}

/* endorsements */
.quotes{display:grid;gap:.7rem;grid-template-columns:1fr}
@media(min-width:760px){.quotes{grid-template-columns:1fr 1fr}}
@media(min-width:1080px){.quotes{grid-template-columns:repeat(4,1fr)}}
.quote{background:#fff;border:1px solid var(--rule);border-left:3px solid var(--gold);
  border-radius:4px;padding:.8rem .95rem}
.quote:nth-child(2){border-left-color:var(--coral)}
.quote:nth-child(3){border-left-color:var(--cyan)}
.quote:nth-child(4){border-left-color:var(--violet)}
.quote blockquote{margin:0 0 .5rem;font-family:var(--display);font-size:.86rem;
  font-style:italic;color:var(--navy);line-height:1.38}
.quote figcaption{font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--slate)}

/* reviews list */
.reviews{list-style:none;margin:0;padding:0;display:grid;gap:.45rem}
.review{background:#fff;border:1px solid var(--rule);border-radius:4px;padding:.6rem .95rem}
.review__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.35rem .9rem}
.review__q{margin:.5rem 0 0;font-family:var(--display);font-style:italic;font-size:.92rem;
  color:var(--navy);max-width:82ch;padding-left:.8rem;border-left:2px solid var(--gold)}
.review__venue{font-family:var(--display);font-weight:700;color:var(--navy);font-size:.95rem}
.review__by{font-size:.83rem;color:var(--slate)}
.review__link{margin-left:auto;font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--navy);text-decoration:none;
  border:1px solid var(--rule);border-radius:100px;padding:.24rem .7rem;white-space:nowrap}
.review__link:hover{border-color:var(--verdigris);color:var(--verdigris)}
.review__note{margin-left:auto;font-family:var(--mono);font-size:.62rem;
  letter-spacing:.06em;text-transform:uppercase;color:var(--slate)}

/* launch event */
.press{display:grid;gap:.6rem}
.presslink{display:flex;flex-wrap:wrap;gap:.35rem .9rem;align-items:baseline;background:#fff;
  border:1px solid var(--rule);border-left:4px solid var(--cyan);border-radius:4px;
  padding:.7rem 1rem;text-decoration:none}
.presslink:nth-child(2){border-left-color:var(--verdigris)}
.presslink__t{font-family:var(--display);font-weight:700;color:var(--navy);font-size:.98rem}
.presslink:hover .presslink__t{color:var(--verdigris)}
.presslink__s{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate)}
.presslink__d{font-size:.85rem;color:var(--slate);flex-basis:100%;margin:0}
.launch{display:grid;gap:clamp(1.5rem,3vw,2.5rem);align-items:start}
@media(min-width:820px){.launch{grid-template-columns:248px 1fr}}
/* fixed column, so a long caption cannot widen the figure and shove the text */
.launch__figure{margin:0;width:248px;max-width:100%}
.launch__poster{width:100%;border:1px solid var(--rule);border-radius:2px;
  box-shadow:0 16px 36px rgba(0,33,71,.22)}
.launch__figure figcaption{font-family:var(--mono);font-size:.64rem;line-height:1.5;
  color:var(--slate);margin-top:.6rem}
.speakers{list-style:none;margin:.9rem 0 0;padding:0;display:grid;gap:.4rem}
.speaker{display:flex;gap:.7rem;align-items:baseline;font-size:.94rem}
.speaker__n{font-family:var(--display);font-weight:700;color:var(--navy)}
.speaker__a{color:var(--slate);font-size:.86rem}
.speaker__role{font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--gold-deep);border:1px solid #f0dcae;
  background:#fdf6e7;border-radius:100px;padding:.12rem .45rem;white-space:nowrap}