/* field-guide.html: page styles, loaded before component refinements. */
:root{
  /* Seraphic V2 "Ethereal Lavender / Aurora" */
  --ice:#eef3fb; --mist:#efeaf8; --paper:#ffffff;
  --ink:#233a72; --ink-soft:#51618f; --ink-faint:#8b97b8;
  --cobalt:#2e54ad; --cobalt-deep:#234193;
  --lav:#c9b6e8; --peri:#8a93de; --orchid:#c98fc4; --mauve:#cf9bb4;
  --line:rgba(46,71,115,.14); --line-soft:rgba(46,71,115,.08);
  --card:rgba(255,255,255,.72); --card-solid:#fff;
  --shadow:0 22px 48px -34px rgba(35,58,114,.45);
  --shadow-sm:0 8px 22px -16px rgba(35,58,114,.4);
  --halo:0 0 22px rgba(201,182,232,.5),0 0 54px rgba(46,84,173,.14);
  --font-display:"Merriweather Sans","Tenor Sans",Cambria,serif;
  --font-script:"Pinyon Script","Snell Roundhand",cursive;
  --font-body:"Montserrat","Helvetica Neue","Segoe UI",system-ui,sans-serif;
  --maxw:1240px;
  --r:18px; --r-sm:12px; --r-pill:999px;
  --cobalt-solid:#2e54ad; --cobalt-solid-deep:#234193;
  --cm-ride:#5b68ab; --cm-metro:#8a6fa5; --cm-outbox:rgba(201,182,232,.14);
}
[data-theme=dark]{
  --ice:#161a26; --mist:#1b2030; --paper:#1f2536;
  --ink:#f2f0f7; --ink-soft:#aab6cc; --ink-faint:#7d8aa6;
  --cobalt:#a9b8ee; --cobalt-deep:#c2cdf5;
  --lav:#b9a6dd; --peri:#8f98df; --orchid:#c98fc4; --mauve:#cf9bb4;
  --line:rgba(220,224,240,.14); --line-soft:rgba(220,224,240,.08);
  --card:rgba(36,42,60,.62); --card-solid:#232a3d;
  --shadow:0 24px 54px -34px rgba(0,0,0,.7);
  --shadow-sm:0 10px 24px -18px rgba(0,0,0,.65);
  --halo:0 0 24px rgba(169,184,238,.22),0 0 56px rgba(180,168,215,.14);
  --cm-ride:#9aa6e6; --cm-metro:#cba6dd; --cm-outbox:rgba(138,147,222,.12);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:76px;}
body{
  margin:0;background:var(--ice);color:var(--ink);
  font-family:var(--font-body);font-weight:400;line-height:1.55;
  font-size:15px;-webkit-font-smoothing:antialiased;letter-spacing:.005em;
  transition:background .5s ease,color .3s ease;
}
h1,h2,h3{font-family:var(--font-display);font-weight:400;line-height:1.12;
  text-wrap:balance;letter-spacing:.01em;margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,4vw,44px);}

/* ---------- Topbar ---------- */
.fd-topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:11px clamp(18px,4vw,44px);background:var(--mist);border-bottom:1px solid var(--line);}
.fd-back{font-family:var(--font-body);font-size:.82rem;color:var(--cobalt);text-decoration:none;letter-spacing:.02em;}
.fd-back:hover{color:var(--cobalt-deep);text-decoration:underline;}
.fd-topbar .fd-brand{font-family:var(--font-display);letter-spacing:.28em;text-transform:uppercase;font-size:.8rem;color:var(--ink);}
.fd-topbar select{font:inherit;font-size:.8rem;color:var(--ink);background:var(--card-solid);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 12px;cursor:pointer;}
.fd-right{display:flex;align-items:center;gap:16px;}

/* ---------- Masthead ---------- */
.masthead{position:relative;overflow:hidden;isolation:isolate;
  padding:clamp(34px,6vw,68px) 0 clamp(30px,5vw,52px);}
#aurora{position:absolute;inset:-20% -10% auto -10%;height:150%;width:120%;z-index:-2;
  filter:blur(46px) saturate(1.15);opacity:.72;}
.masthead::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(238,243,251,0) 40%,var(--ice) 100%);}
[data-theme=dark] .masthead::after{background:linear-gradient(180deg,rgba(22,26,38,0) 40%,var(--ice) 100%);}
.brandrow{display:flex;align-items:center;gap:14px;margin-bottom:clamp(20px,4vw,34px);}
.mark{width:42px;height:42px;flex:none;filter:drop-shadow(0 4px 10px rgba(46,84,173,.28));}
.lockup{display:flex;flex-direction:column;line-height:1;}
.lockup .s{font-family:var(--font-display);font-size:1.32rem;letter-spacing:.34em;
  text-transform:uppercase;padding-left:.34em;}
.lockup .t{font-family:var(--font-script);font-size:1.9rem;color:var(--cobalt);
  margin-top:-.14em;margin-left:-.02em;}
.eyebrow{font-family:var(--font-body);text-transform:uppercase;letter-spacing:.32em;
  font-size:.66rem;font-weight:500;color:var(--ink-soft);}
.title{font-size:clamp(2.5rem,7vw,5.1rem);margin:.28em 0 .1em;}
.title .script{font-family:var(--font-script);color:var(--cobalt);
  font-size:1.14em;letter-spacing:0;}
.lede{max-width:60ch;color:var(--ink-soft);font-size:clamp(.95rem,1.6vw,1.06rem);margin:.7em 0 0;}
.statline{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px;}
.stat{display:flex;flex-direction:column;gap:2px;}
.stat b{font-family:var(--font-display);font-size:1.85rem;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1;}
.stat span{font-size:.66rem;text-transform:uppercase;letter-spacing:.2em;color:var(--ink-faint);}

/* ---------- Sticky section nav ---------- */
.secnav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--ice) 86%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:12px 0;}
.secnav .wrap{display:flex;gap:8px;flex-wrap:wrap;}
.secnav a{font-size:.78rem;border:1px solid var(--line);background:var(--card-solid);
  color:var(--ink-soft);padding:6px 14px;border-radius:var(--r-pill);transition:.18s ease;letter-spacing:.01em;}
.secnav a:hover{border-color:var(--peri);color:var(--ink);}

/* ---------- Sections & prose ---------- */
.sect{padding:46px 0 6px;}
.sect>.wrap>.eyebrow{margin-bottom:8px;}
.sect h2{font-size:clamp(1.7rem,3.8vw,2.6rem);margin-bottom:.35em;}
.prose{max-width:78ch;}
.prose p{color:var(--ink-soft);font-size:.93rem;line-height:1.65;margin:.9em 0;}
.prose p b{color:var(--ink);font-weight:600;}
.prose h3{font-size:1.28rem;margin:1.7em 0 .2em;color:var(--ink);}
.prose a,.pl-body a,.ftab a{color:var(--cobalt);}
.prose a:hover,.pl-body a:hover,.ftab a:hover{color:var(--cobalt-deep);text-decoration:underline;}
.aside{background:var(--mist);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 15px;font-size:.83rem;color:var(--ink-soft);line-height:1.55;margin:16px 0;max-width:78ch;}
.aside b{color:var(--ink);font-weight:600;}

/* ---------- Tables ---------- */
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);
  background:var(--card);backdrop-filter:blur(8px);box-shadow:var(--shadow-sm);margin:18px 0;}
table.ftab{border-collapse:collapse;width:100%;min-width:660px;font-size:.84rem;}
.ftab th{font-family:var(--font-body);font-size:.62rem;text-transform:uppercase;letter-spacing:.18em;
  color:var(--ink-faint);text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap;}
.ftab td{padding:11px 14px;border-bottom:1px solid var(--line-soft);vertical-align:top;
  color:var(--ink-soft);line-height:1.5;}
.ftab tr:last-child td{border-bottom:0;}
.ftab td b{color:var(--ink);font-weight:600;}
.ftab .bn{font-family:var(--font-display);font-size:.98rem;color:var(--ink);white-space:nowrap;}
.ftab .num{font-variant-numeric:tabular-nums;white-space:nowrap;}
.tbnote{font-size:.75rem;color:var(--ink-soft);margin:-8px 0 18px;line-height:1.5;max-width:78ch;}
.cfm{display:inline-block;font-size:.66rem;text-transform:uppercase;letter-spacing:.1em;
  color:#8a5a1f;background:rgba(138,90,31,.08);border:1px solid rgba(138,90,31,.3);
  border-radius:var(--r-pill);padding:2px 8px;white-space:nowrap;}
[data-theme=dark] .cfm{color:#d9a878;}

/* ---------- Itinerary plans ---------- */
.plan{border:1px solid var(--line);border-radius:var(--r);background:var(--card);
  backdrop-filter:blur(8px);box-shadow:var(--shadow-sm);margin:14px 0;overflow:hidden;transition:.2s ease;}
.plan[open]{border-color:var(--lav);box-shadow:var(--shadow);}
.plan summary{display:flex;align-items:baseline;gap:14px;padding:16px 18px;cursor:pointer;list-style:none;}
.plan summary::-webkit-details-marker{display:none;}
.pl-days{font-family:var(--font-display);font-size:1.28rem;color:var(--ink);white-space:nowrap;min-width:5.4em;}
.pl-t{font-size:.82rem;color:var(--ink-soft);flex:1;}
.pl-mark{color:var(--ink-faint);font-size:1.1rem;line-height:1;transition:.2s ease;align-self:center;}
.plan[open] .pl-mark{transform:rotate(45deg);color:var(--cobalt);}
.pl-body{padding:2px 18px 18px;border-top:1px solid var(--line-soft);}
.pl-body p{color:var(--ink-soft);font-size:.88rem;line-height:1.6;margin:.8em 0;}
.pl-body p b{color:var(--ink);font-weight:600;}
.dayh{font-size:.66rem;text-transform:uppercase;letter-spacing:.22em;color:var(--ink-soft);
  font-weight:600;margin:18px 0 4px;}
.sched{list-style:none;margin:0;padding:0;}
.drow{display:grid;grid-template-columns:64px 1fr;gap:12px;padding:9px 0;
  border-bottom:1px dashed var(--line-soft);font-size:.86rem;color:var(--ink-soft);line-height:1.55;}
.drow:last-of-type{border-bottom:0;}
.drow b{font-family:var(--font-body);font-weight:600;color:var(--cobalt);
  font-variant-numeric:tabular-nums;font-size:.78rem;padding-top:2px;}
.drow span b{color:var(--ink);font-size:.86rem;font-variant-numeric:normal;padding:0;}

/* ---------- Footer ---------- */
footer{margin-top:54px;border-top:1px solid var(--line);background:var(--mist);}
footer .wrap{padding:38px 0 46px;display:grid;gap:26px;grid-template-columns:1.4fr 1fr;}
.legend{display:flex;flex-direction:column;gap:9px;}
.legend h3,.contact h3{font-size:.68rem;text-transform:uppercase;letter-spacing:.24em;
  color:var(--ink-faint);margin:0 0 4px;font-weight:600;font-family:var(--font-body);}
.legend .row{display:flex;gap:9px;align-items:center;font-size:.8rem;color:var(--ink-soft);}
.legend .row a{color:var(--cobalt);}
.legend .row a:hover{color:var(--cobalt-deep);text-decoration:underline;}
.legend .meta{font-size:.76rem;color:var(--ink-soft);margin-top:6px;line-height:1.55;max-width:60ch;}
.contact a{color:var(--cobalt);}
.sig{font-family:var(--font-script);font-size:1.7rem;color:var(--cobalt);}
.themebtn{position:fixed;right:16px;bottom:16px;z-index:40;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--card-solid);color:var(--ink);cursor:pointer;
  box-shadow:var(--shadow);display:grid;place-items:center;transition:.2s;}
.themebtn:hover{transform:scale(1.06);border-color:var(--peri);}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:2px;border-radius:4px;}

@media(max-width:720px){
  footer .wrap{grid-template-columns:1fr;}
  .title{font-size:clamp(2.2rem,10vw,3rem);}
  .pl-days{min-width:0;}
  .plan summary{flex-wrap:wrap;gap:6px 14px;}
  .drow{grid-template-columns:52px 1fr;}
  .fd-topbar{flex-wrap:wrap;row-gap:8px;}
  .fd-right{gap:10px;flex-wrap:wrap;}
  .fd-right .fd-back{white-space:nowrap;}
  .fd-topbar select{max-width:150px;}
}
/* ---------- Skip link ---------- */
.skip{position:fixed;inset-inline-start:12px;top:-64px;z-index:60;background:var(--cobalt-solid);color:#fff;
  font-family:var(--font-body);font-size:.82rem;font-weight:500;padding:9px 16px;border-radius:var(--r-pill);
  box-shadow:var(--shadow);transition:top .18s ease;}
.skip:focus{top:12px;}

/* ---------- Reading progress ---------- */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:50;background:transparent;pointer-events:none;}
.progress i{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--peri),var(--orchid),var(--mauve));
  box-shadow:0 0 8px rgba(138,147,222,.55);}

/* ---------- Dateline ---------- */
.dateline{display:inline-flex;align-items:center;gap:9px;margin-top:22px;
  font-size:.66rem;text-transform:uppercase;letter-spacing:.18em;color:var(--ink-soft);}
.dateline::before{content:"";width:18px;height:1px;background:var(--line);}
#main:focus{outline:none;}

/* ---------- Active section nav ---------- */
.secnav a[aria-current="true"]{border-color:var(--peri);color:var(--ink);
  background:color-mix(in srgb,var(--lav) 22%,var(--card-solid));}

/* ---------- Desktop: left-hand section sidebar (docs-style TOC) ---------- */
.secnav-h{display:none;}
@media(min-width:1000px){
  .fg-shell{max-width:1200px;margin:0 auto;padding:0 clamp(18px,4vw,44px);
    display:grid;grid-template-columns:214px minmax(0,1fr);gap:clamp(30px,4.5vw,68px);align-items:start;}
  .fg-shell>main{min-width:0;}
  .fg-shell>main .wrap{max-width:none;padding-left:0;padding-right:0;}
  .secnav{position:sticky;top:26px;z-index:5;background:none;backdrop-filter:none;
    border:none;padding:6px 0 0;align-self:start;}
  .secnav .wrap{flex-direction:column;gap:3px;max-width:none;padding:0;align-items:stretch;}
  .secnav-h{display:block;font-family:var(--font-body);text-transform:uppercase;letter-spacing:.16em;
    font-size:.64rem;color:var(--ink-faint);margin:0 0 10px 14px;}
  .secnav a{border:none;background:none;border-radius:9px;padding:8px 14px;font-size:.92rem;
    color:var(--ink-soft);letter-spacing:0;transition:background .16s ease,color .16s ease;}
  .secnav a:hover{border:none;background:color-mix(in srgb,var(--lav) 12%,transparent);color:var(--ink);}
  .secnav a[aria-current="true"]{border:none;font-weight:600;color:var(--ink);
    background:color-mix(in srgb,var(--lav) 26%,var(--card-solid));}
}

/* ---------- Table readability: zebra, hover, visible scroll ---------- */
.ftab tbody tr:nth-child(even) td{background:color-mix(in srgb,var(--lav) 7%,transparent);}
[data-theme=dark] .ftab tbody tr:nth-child(even) td{background:color-mix(in srgb,var(--peri) 8%,transparent);}
.ftab tbody tr:hover td{background:color-mix(in srgb,var(--peri) 12%,transparent);}
[data-theme=dark] .ftab tbody tr:hover td{background:color-mix(in srgb,var(--peri) 18%,transparent);}
.tblwrap{scrollbar-width:thin;scrollbar-color:var(--line) transparent;}
.tblwrap::-webkit-scrollbar{height:9px;}
.tblwrap::-webkit-scrollbar-thumb{background:var(--line);border-radius:9px;}
.tblwrap::-webkit-scrollbar-track{background:transparent;}
.ftab caption{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- Cluster map ---------- */
.clustermap{margin:22px 0 8px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--card);backdrop-filter:blur(8px);box-shadow:var(--shadow-sm);padding:16px 18px 14px;}
.cm-head{display:block;margin-bottom:8px;}
.cm-head b{display:block;font-family:var(--font-display);font-weight:400;font-size:1.05rem;color:var(--ink);letter-spacing:.01em;}
.cm-head span{display:block;font-size:.78rem;color:var(--ink-soft);line-height:1.5;margin-top:3px;max-width:72ch;}
.cm-canvas{overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--line) transparent;margin:2px -6px 0;}
.cm-canvas::-webkit-scrollbar{height:8px;}
.cm-canvas::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px;}
.cm-canvas svg{display:block;width:100%;min-width:560px;height:auto;}
.cm-legend-row{list-style:none;display:flex;flex-wrap:wrap;gap:9px 18px;margin:12px 0 0;padding:0;}
.cm-legend-row li{display:flex;align-items:center;gap:7px;font-size:.73rem;color:var(--ink-soft);letter-spacing:.01em;}
.cm-legend-row svg{flex:none;overflow:visible;}
.cm-anchor{fill:var(--cobalt);stroke:none;}
.cm-anchor-hub{fill:var(--card-solid);stroke:none;}
.cm-walk{fill:var(--card-solid);stroke:var(--cobalt);stroke-width:2;}
.cm-outdot{fill:var(--ink-soft);stroke:none;}
.cm-ride{stroke:var(--cm-ride);stroke-width:1.5;fill:none;}
.cm-metro{stroke:var(--cm-metro);stroke-width:2.6;stroke-dasharray:1.5 7;stroke-linecap:round;fill:none;}
.cm-river{stroke:var(--peri);stroke-width:22;opacity:.13;fill:none;stroke-linecap:round;}
.cm-outbox{fill:var(--cm-outbox);stroke:var(--line);stroke-width:1;}
.cm-t-main{font-family:var(--font-body);font-size:15px;font-weight:600;fill:var(--ink);}
.cm-t-sub{font-family:var(--font-body);font-size:12px;fill:var(--ink-soft);letter-spacing:.02em;}
.cm-t-ride{font-family:var(--font-body);font-size:10px;fill:var(--ink-soft);letter-spacing:.02em;}
.cm-t-group{font-family:var(--font-body);font-size:12px;font-weight:600;fill:var(--ink-soft);letter-spacing:.05em;text-transform:uppercase;}
.cm-t-river{font-family:var(--font-script);font-size:20px;fill:var(--peri);opacity:.7;}
.cm-halo{paint-order:stroke;stroke:var(--card-solid);stroke-width:3.4px;stroke-linejoin:round;}

/* ---------- Itinerary deep-link / copy ---------- */
.plan{scroll-margin-top:88px;}
.pl-actions{display:flex;justify-content:flex-end;margin:2px 0 -2px;}
.pl-copy{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-body);font-size:.68rem;
  letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft);background:transparent;
  border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 11px;cursor:pointer;transition:.16s ease;}
.pl-copy:hover{border-color:var(--peri);color:var(--cobalt);}
.pl-copy svg{width:13px;height:13px;}
.pl-copy[data-copied]{color:#fff;background:var(--cobalt-solid);border-color:var(--cobalt-solid);}

/* ---------- Closing CTA ---------- */
.cta-band{margin:46px 0 0;}
.cta-band .inner{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(135deg,color-mix(in srgb,var(--lav) 26%,var(--paper)),var(--paper));
  box-shadow:var(--shadow-sm);padding:clamp(24px,4vw,40px);}
.cta-band h2{font-size:clamp(1.5rem,3.4vw,2.2rem);margin-bottom:.3em;}
.cta-band p{color:var(--ink-soft);font-size:.95rem;line-height:1.6;max-width:60ch;margin:0 0 20px;}
.cta-band .btns{display:flex;flex-wrap:wrap;gap:12px;}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-body);font-size:.86rem;
  font-weight:500;letter-spacing:.02em;padding:11px 22px;border-radius:var(--r-pill);
  border:1px solid var(--line);transition:.18s ease;cursor:pointer;}
.btn.primary{background:var(--cobalt-solid);color:#fff;border-color:var(--cobalt-solid);}
.btn.primary:hover{background:var(--cobalt-solid-deep);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn.ghost{background:var(--card-solid);color:var(--ink);}
.btn.ghost:hover{border-color:var(--peri);color:var(--cobalt);}

/* ---------- Footer freshness note ---------- */
.report{font-size:.76rem;color:var(--ink-soft);margin-top:10px;}
.report a{color:var(--cobalt);}
.report a:hover{color:var(--cobalt-deep);text-decoration:underline;}

@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto;}
  #aurora{animation:none;}
  .skip,.btn.primary{transition:none;}
}

/* ---------- Print: a packable field guide ---------- */
@media print{
  :root{--ice:#fff;--mist:#fff;--paper:#fff;--card:#fff;--card-solid:#fff;
    --ink:#141414;--ink-soft:#333;--ink-faint:#555;--cobalt:#1c3b8a;--cobalt-deep:#152c66;
    --line:#c4c4c4;--line-soft:#e2e2e2;--shadow:none;--shadow-sm:none;}
  html{scroll-behavior:auto;}
  body{background:#fff;color:#000;font-size:10.5pt;}
  .fd-topbar,.secnav,.themebtn,.progress,.skip,#aurora,.cta-band,.pl-copy,.pl-actions,.pl-mark,.cm-legend-row{display:none !important;}
  .fg-shell{display:block !important;max-width:none;padding:0;}
  .masthead{padding:0 0 10px;}
  .masthead::after{display:none;}
  .clustermap{break-inside:avoid;}
  .cm-canvas{overflow:visible;}
  .cm-canvas svg{min-width:0;}
  .plan{border:1px solid #bbb;break-inside:avoid;}
  .plan .pl-body{border-top:1px solid #ddd;}
  .tblwrap{overflow:visible;border:1px solid #bbb;}
  table.ftab{min-width:0;font-size:8.5pt;}
  .prose,.pl-body p{max-width:none;}
  .prose a[href^="http"]::after{content:" (" attr(href) ")";font-size:7.5pt;color:#666;word-break:break-all;}
  .sect{padding:12px 0 0;}
  h2,h3{break-after:avoid;}
  a{color:#1c3b8a;text-decoration:underline;}
  footer{background:#fff;border-top:1px solid #bbb;}
}