/* ============================================================
   S&PONS 500 — index methodology document
   A dense document, not a landing page.
   No gradients (except the hero scrim), no glows, no shadows,
   no corner radius over 2px.
   ============================================================ */

/* ---- 1. TOKENS ------------------------------------------- */
:root{
  --paper:#FBFBF9;
  --navy:#14213D;
  --slate:#5A6478;
  --red:#B3122A;
  --rule:#D8DAE0;

  --tint:rgba(20,33,61,.02);      /* 2% navy — alternating rows */
  --tint-section:rgba(20,33,61,.015);

  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --bar-h:4px;
  --ticker-h:26px;
  --nav-h:58px;
  --head-h:calc(var(--bar-h) + var(--ticker-h) + var(--nav-h));

  --wrap:1080px;
  --gut:24px;
}

/* ---- 2. RESET -------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--head-h);
  background:var(--paper);
  color:var(--slate);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
table{border-collapse:separate;border-spacing:0;width:100%}
code,pre{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--navy);outline-offset:2px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--navy);color:var(--paper);
  padding:8px 14px;font:500 12px/1 var(--mono);letter-spacing:.06em;
}
.skip-link:focus{left:8px;top:8px}

.inline-link{color:var(--navy);text-decoration:underline;text-underline-offset:2px}
.inline-link:hover{color:var(--red)}

/* ---- 3. TYPE SCALE --------------------------------------- */
h1{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(32px,4vw,52px);line-height:1.08;
  letter-spacing:-.015em;color:var(--navy);
  margin:14px 0 20px;max-width:24ch;
}
h2{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(21px,2.2vw,27px);line-height:1.2;
  letter-spacing:-.01em;color:var(--navy);margin-top:2px;
}
h3{
  font-family:var(--serif);font-weight:600;
  font-size:17px;line-height:1.3;color:var(--navy);
}
.eyebrow{
  font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.11em;text-transform:uppercase;color:var(--slate);
}
.lede{font-size:16px;line-height:1.65;max-width:60ch}
.asof{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--slate);white-space:nowrap;padding-top:2px;
}

/* ---- 4. LAYOUT ------------------------------------------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}

.section{
  padding:52px 0;
  border-top:1px solid var(--rule);
  scroll-margin-top:calc(var(--head-h) + 8px);
}
.section-tint{background:var(--tint-section)}

.sec-head{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:16px;padding-bottom:18px;margin-bottom:26px;
  border-bottom:1px solid var(--rule);
}

/* ---- 5. HEAD STACK: navy bar · ticker · nav -------------- */
.headstack{position:fixed;top:0;left:0;right:0;z-index:50;background:var(--paper)}
.navybar{height:var(--bar-h);background:var(--navy)}

.ticker{
  height:var(--ticker-h);overflow:hidden;
  border-bottom:1px solid var(--rule);background:var(--paper);
  display:flex;align-items:center;
}
.ticker-track{
  display:flex;flex:none;white-space:nowrap;
  font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.09em;color:var(--navy);
  animation:tick 46s linear infinite;will-change:transform;
}
@keyframes tick{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

.nav{height:var(--nav-h);border-bottom:1px solid var(--rule);background:var(--paper)}
.nav-inner{
  max-width:var(--wrap);margin:0 auto;padding:0 var(--gut);height:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}

/* ---- 6. BRAND -------------------------------------------- */
.brand{
  display:inline-flex;align-items:center;gap:9px;flex:none;
  font-family:var(--serif);font-weight:700;font-size:17px;
  letter-spacing:-.01em;color:var(--navy);text-decoration:none;
}
.brand__mark{width:34px;height:34px;flex:none} /* already rounded + alpha: no box, no shadow */
.brand__text em{color:var(--red);font-style:normal}
.brand--footer{font-size:16px}
.brand--footer .brand__mark{width:28px;height:28px;opacity:.9}

/* ---- 7. NAV LINKS ---------------------------------------- */
.nav-links{display:flex;align-items:center;gap:19px}
/* :not(.btn) — otherwise this rule outranks .btn and strips the
   CTA's padding and white text. */
.nav-links a:not(.btn){
  font-size:13px;color:var(--slate);text-decoration:none;
  padding:4px 0;border-bottom:1px solid transparent;white-space:nowrap;
}
.nav-links a:not(.btn):hover{color:var(--navy);border-bottom-color:var(--navy)}

.nav-cta-wrap{display:flex;align-items:center;gap:12px}
.nav-x{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;color:var(--navy);border:1px solid var(--rule);flex:none;
}
.nav-x:hover{background:var(--navy);color:var(--paper);border-color:var(--navy)}
.nav-x svg{display:block}

.hamburger{display:none;width:34px;height:34px;padding:8px 6px;flex-direction:column;justify-content:space-between}
.hamburger span{display:block;height:1px;background:var(--navy)}

/* ---- 8. BUTTONS ------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase;text-decoration:none;
  padding:11px 18px;border:1px solid transparent;border-radius:1px;
  transition:background-color .12s linear,color .12s linear,border-color .12s linear;
}
.btn-sm{padding:8px 13px;font-size:11px}
.btn-red{background:var(--red);color:#fff;border-color:var(--red)}
.btn-red:hover{background:#8E0E21;border-color:#8E0E21}
.btn-outline{color:var(--navy);border-color:var(--navy);background:transparent}
.btn-outline:hover{background:var(--navy);color:var(--paper)}
.btn-text{
  color:var(--navy);padding:11px 2px;text-transform:none;
  font-family:var(--sans);font-size:14px;letter-spacing:0;
  text-decoration:underline;text-underline-offset:3px;
}
.btn-text:hover{color:var(--red)}
.btn[disabled]{opacity:.55;pointer-events:none}
/* Links awaiting a published URL stay clickable — they answer instead. */
.btn[aria-disabled="true"]{opacity:.62}

.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px}

/* ---- 9. HERO --------------------------------------------- */
.hero{
  position:relative;border-top:0;overflow:hidden;
  padding:46px 0 54px;
}
.hero__media{position:absolute;inset:0;overflow:hidden}
.hero__video,.hero__fallback{
  width:100%;height:100%;object-fit:cover;object-position:62% center;
}
.hero__fallback{display:none}

/* A LIGHT scrim — this is a paper site, the inverse of a dark one.
   Stops are tuned so slate body text keeps >= 4.5:1 across the whole
   text column against the measured video luminance (~rgb(119,117,116)),
   while the right third still shows the footage. */
.hero__scrim{
  position:absolute;inset:0;
  background:linear-gradient(90deg,
    rgba(251,251,249,.97) 0%,
    rgba(251,251,249,.95) 62%,
    rgba(251,251,249,.45) 100%);
}
.hero__inner{position:relative;z-index:1}
.hero .sec-head{border-bottom-color:rgba(20,33,61,.14)}
.hero .footnotes{border-top-color:rgba(20,33,61,.14)}

/* ---- 10. THE REGISTER ------------------------------------
   The one block on this site that is not a joke. Every text
   node here is >= 16px — the footnote gag stops at this door. */
.register{
  padding:44px 0;
  border-top:1px solid var(--rule);
  background:var(--paper);
  scroll-margin-top:calc(var(--head-h) + 8px);
}
.register__card{
  border:2px solid var(--navy);
  border-left:6px solid var(--navy);
  border-radius:2px;
  background:var(--paper);
  padding:30px 32px 28px;
}
.register__eyebrow{
  font-family:var(--mono);font-size:16px;font-weight:500;
  letter-spacing:.14em;color:var(--red);text-transform:uppercase;
  line-height:1.4;
}
.register__title{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(24px,3.4vw,38px);line-height:1.14;
  letter-spacing:-.012em;color:var(--navy);
  margin:12px 0 12px;max-width:22ch;
}
.register__sub{font-size:17px;line-height:1.6;color:var(--slate);max-width:62ch}

.register__ca{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin:26px 0 20px;
}
.register__ca-label{
  font-family:var(--mono);font-size:16px;letter-spacing:.1em;
  color:var(--slate);text-transform:uppercase;flex-basis:100%;
}
.register__ca-value{
  flex:1 1 380px;min-width:0;
  font-family:var(--mono);font-size:clamp(16px,2.6vw,28px);
  line-height:1.35;color:var(--navy);
  background:rgba(20,33,61,.05);
  border:1px solid rgba(20,33,61,.35);border-radius:2px;
  padding:16px 20px;
  user-select:all;-webkit-user-select:all;
  word-break:break-all;overflow-wrap:anywhere;
}
.btn--copy{
  background:var(--red);color:var(--paper);border-color:var(--red);
  font-size:16px;letter-spacing:.1em;
  min-height:44px;min-width:96px;border-radius:2px;padding:11px 20px;
}
.btn--copy:hover{background:#8E0E21;border-color:#8E0E21}
.btn--copy-sm{min-height:44px;min-width:88px;font-size:16px}

.register__links{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
.register__links .btn{font-size:16px;min-height:48px;border-radius:2px;padding:12px 22px}
.btn--x{background:var(--navy);color:var(--paper);border:2px solid var(--navy)}
.btn--x:hover{background:#0C1526;border-color:#0C1526}
.btn--buy{background:transparent;color:var(--navy);border:2px solid var(--navy)}
.btn--buy:hover{background:var(--navy);color:var(--paper)}

.register__warning{
  background:rgba(179,18,42,.06);
  border-left:4px solid var(--red);
  padding:16px 20px;
  font-size:17px;line-height:1.7;color:var(--navy);
  max-width:78ch;
}
.register__warning strong{font-weight:600}
.register__disclaimer{
  margin-top:18px;font-size:16px;line-height:1.6;color:var(--slate);max-width:78ch;
}

/* ---- 11. FOOTNOTES --------------------------------------- */
.footnotes{margin-top:24px;border-top:1px solid var(--rule);padding-top:12px}
.footnotes li{
  font-size:11px;line-height:1.55;color:var(--slate);
  padding:3px 0;display:flex;gap:6px;
}
.fn-mark{font-family:var(--mono);flex:none}
.footnote-line{font-size:11px;line-height:1.55;color:var(--slate);margin-top:16px}

/* ---- 12. TRUST BAR --------------------------------------- */
.trustbar{
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
  background:var(--tint);padding:14px var(--gut);text-align:center;
}
.trustbar p{
  font-family:var(--mono);font-size:11px;letter-spacing:.07em;
  text-transform:uppercase;color:var(--slate);
  max-width:74ch;margin:0 auto;line-height:1.6;
}

/* ---- 13. CLAUSE LIST ------------------------------------- */
.clauses{border-top:1px solid var(--rule)}
.clause{
  display:grid;grid-template-columns:78px 1fr;gap:18px;
  padding:20px 0;border-bottom:1px solid var(--rule);
}
.clause-no{
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.08em;color:var(--slate);padding-top:3px;
}
.clause-body h3{margin-bottom:6px;letter-spacing:.02em}
.clause-body p{max-width:70ch}
.clauses-steps .clause-body h3{font-size:18px;letter-spacing:0}

/* ---- 14. TABLES ------------------------------------------ */
.table-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:12px;flex-wrap:wrap;margin-bottom:8px;
}
.table-title,.table-meta{
  font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.09em;color:var(--navy);
}
.table-meta{color:var(--slate);font-weight:400}
.scroll-hint{
  font-family:var(--mono);font-size:10px;letter-spacing:.1em;
  color:var(--slate);margin-bottom:6px;
}

.table-wrap{
  border:1px solid var(--rule);overflow:auto;background:var(--paper);
  max-height:440px;overscroll-behavior:contain;
}
.table-wrap-static{max-height:none}

.tbl{font-family:var(--mono);font-size:12.5px;min-width:520px}
.tbl thead th{
  position:sticky;top:0;z-index:2;background:var(--paper);
  text-align:left;font-weight:500;font-size:10.5px;letter-spacing:.11em;
  color:var(--navy);padding:9px 14px;border-bottom:1px solid var(--navy);
  white-space:nowrap;
}
.tbl td,.tbl tbody th{
  padding:8px 14px;border-bottom:1px solid var(--rule);
  color:var(--navy);font-weight:400;text-align:left;vertical-align:top;
}
.tbl tbody tr:nth-child(even){background:var(--tint)}
.tbl tbody tr:last-child td,.tbl tbody tr:last-child th{border-bottom:0}

.col-rank{width:74px;white-space:nowrap}
.tbl th.col-rank,.tbl td.col-rank{color:var(--slate);font-weight:400}
.col-name{width:auto;white-space:nowrap}
.col-num{width:96px;text-align:right;white-space:nowrap}
.col-period{width:88px;letter-spacing:.08em}
.tbl th.col-num{text-align:right}

/* Must outrank `.tbl td`, or negative figures print navy. */
.tbl td.neg{color:var(--red)}
.tbl td.pos{color:var(--navy)}

.tbl-totals{
  border:1px solid var(--navy);border-top:0;min-width:520px;
  font-weight:600;background:var(--paper);
}
.tbl-totals td{border-bottom:0;padding:11px 14px;letter-spacing:.06em}
.tbl-totals .col-rank{color:var(--slate)}
.totals-scroll{overflow-x:auto}

.tbl-constituents td{font-variant-numeric:tabular-nums}

.table-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px}
.rebalance-note{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--slate);flex-basis:100%;min-height:16px;
}

/* ---- 15. TERMINAL (paper, not a hacker screen) ----------- */
.terminal-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:32px;align-items:start}
.terminal{border:1px solid var(--rule);background:var(--paper);min-width:0}
.terminal-bar{
  display:flex;align-items:center;gap:10px;
  padding:8px 12px;border-bottom:1px solid var(--rule);background:var(--tint);
}
.terminal-dots{display:inline-flex;gap:5px}
.terminal-dots i{width:6px;height:6px;background:var(--rule);border:1px solid var(--rule);display:block}
.terminal-title{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--slate);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.terminal-body{
  margin:0;padding:16px 16px 20px;overflow-x:auto;
  font-size:12.5px;line-height:1.7;color:var(--navy);
  min-height:430px;white-space:pre;tab-size:4;
}
.terminal-body .cmt{color:var(--slate)}
.terminal-body .kw{font-weight:600}
.cursor{
  display:inline-block;width:7px;height:1.05em;background:var(--navy);
  vertical-align:text-bottom;animation:blink 1.05s step-end infinite;
}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:0}}

.terminal-note h3{margin:8px 0 12px;font-size:20px;max-width:22ch}
.terminal-note p{max-width:52ch}
.terminal-note p+p{margin-top:12px}

/* ---- 16. COMMITTEE DIRECTORY ----------------------------- */
.directory{border-top:1px solid var(--rule)}
.member{
  display:grid;grid-template-columns:96px 1fr;gap:22px;
  padding:22px 0;border-bottom:1px solid var(--rule);align-items:start;
}
/* Staff file photographs: square, 2px, hairline frame. Not avatars. */
.avatar{
  width:96px;height:96px;flex:none;object-fit:cover;
  border:1px solid var(--rule);border-radius:2px;background:var(--tint);
}
.member-body h3{font-size:18px;letter-spacing:.01em}
.member-title{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--slate);text-transform:uppercase;margin:4px 0 10px;
}
.member-quote{max-width:66ch}

/* ---- 17. FAQ --------------------------------------------- */
.faq{border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{
  list-style:none;cursor:pointer;padding:16px 28px 16px 0;position:relative;
  font-family:var(--serif);font-size:17px;font-weight:600;color:var(--navy);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:2px;top:15px;
  font-family:var(--mono);font-size:15px;color:var(--slate);
}
.faq details[open] summary::after{content:"–"}
.faq-body{padding:0 0 18px}
.faq-body p{max-width:70ch}

/* ---- 18. FOOTER ------------------------------------------ */
.footer{border-top:1px solid var(--rule);padding:34px 0 44px;background:var(--paper)}
.footer-top{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;padding-bottom:20px;margin-bottom:22px;border-bottom:1px solid var(--rule);
}
.footer-links{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.footer-links a{
  font-family:var(--mono);font-size:11px;letter-spacing:.09em;
  color:var(--slate);text-decoration:none;text-transform:uppercase;padding:2px 0;
}
.footer-links a:hover{color:var(--navy)}

/* the register, restated — also >= 16px */
.footer-register{
  border:1px solid var(--navy);border-left:4px solid var(--navy);border-radius:2px;
  padding:18px 20px;margin-bottom:24px;
}
.footer-register__label{
  font-family:var(--mono);font-size:16px;letter-spacing:.1em;
  color:var(--red);text-transform:uppercase;margin-bottom:12px;
}
.footer-register__row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.footer-register__ca{
  flex:1 1 340px;min-width:0;
  font-family:var(--mono);font-size:16px;line-height:1.4;color:var(--navy);
  background:rgba(20,33,61,.05);border:1px solid rgba(20,33,61,.35);border-radius:2px;
  padding:12px 14px;user-select:all;-webkit-user-select:all;
  word-break:break-all;overflow-wrap:anywhere;
}
.footer-register__line{margin-top:12px;font-size:16px;line-height:1.6;color:var(--navy)}

.disclaimer{font-size:11px;line-height:1.7;color:var(--slate);max-width:100ch}

/* ---- 19. TOAST ------------------------------------------- */
.toast{
  position:fixed;left:50%;bottom:24px;transform:translateX(-50%);
  background:var(--navy);color:var(--paper);border:1px solid var(--red);
  font-family:var(--mono);font-size:13px;letter-spacing:.05em;
  padding:12px 18px;border-radius:0;z-index:80;
  opacity:0;visibility:hidden;transition:opacity .12s linear;
  max-width:calc(100vw - 32px);text-align:center;
}
.toast.is-on{opacity:1;visibility:visible}

/* ---- 20. SCROLL REVEAL (opacity only, 120ms) ------------- */
.reveal{opacity:0;transition:opacity .12s linear}
.reveal.is-in{opacity:1}
.no-js .reveal{opacity:1}

/* ---- 21. RESPONSIVE -------------------------------------- */
@media (max-width:1080px){
  .nav-links{gap:15px}
  .nav-links a:not(.btn){font-size:12.5px}
}

@media (max-width:900px){
  .terminal-grid{grid-template-columns:1fr;gap:26px}
  .terminal-body{min-height:0}
}

@media (max-width:768px){
  /* even scrim on mobile — the text column spans the full width */
  .hero__scrim{background:rgba(251,251,249,.93)}
  .hero__video,.hero__fallback{object-position:70% center}
}

@media (max-width:760px){
  :root{--gut:18px;--nav-h:54px}

  .hamburger{display:flex}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:var(--head-h);
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--rule);
    padding:6px var(--gut) 16px;
  }
  .nav-links.is-open{display:flex}
  .nav-links li{border-bottom:1px solid var(--rule)}
  .nav-links li:last-child{border-bottom:0}
  .nav-links a:not(.btn){display:block;padding:13px 0;font-size:14px}
  .nav-cta-wrap{padding-top:14px;gap:10px}
  .nav-links .btn{display:inline-flex}
  .brand__mark{width:30px;height:30px}

  .section,.register{padding:40px 0}
  .sec-head{flex-direction:column;gap:6px}
  .asof{padding-top:0}
  .register__card{padding:24px 20px 22px;border-left-width:6px}
  .clause{grid-template-columns:56px 1fr;gap:12px}
  .table-wrap{max-height:380px}
  .member{grid-template-columns:72px 1fr;gap:16px}
  .avatar{width:72px;height:72px}
  .footer-top{flex-direction:column;align-items:flex-start}
}

@media (max-width:420px){
  .register__ca-value{flex-basis:100%;padding:14px 15px}
  .btn--copy{width:100%}
  .register__links .btn{width:100%}
  .footer-register__ca{flex-basis:100%}
  .footer-register .btn--copy-sm{width:100%}
}

@media (max-width:400px){
  .clause{grid-template-columns:1fr;gap:4px}
  .clause-no{padding-top:0}
  .btn{padding:10px 14px;font-size:11px}
  .register__links .btn,.btn--copy{font-size:16px}
}

/* ---- 22. REDUCED MOTION ---------------------------------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .ticker-track{animation:none;transform:none}
  .cursor{animation:none;opacity:1}
  .reveal{opacity:1}
}

/* ---- 23. PRINT (it is a document, after all) ------------- */
@media print{
  .headstack,.table-actions,.toast,.skip-link,.hero__media{display:none}
  body{padding-top:0;font-size:11pt}
  .table-wrap{max-height:none;overflow:visible}
  .reveal{opacity:1}
  .register__card{border-color:#000}
}