/* Field Notes (blog) layer. Loads AFTER styles.css and reuses its tokens and
   components (nav, footer, .faq, .btn, .closing--photo, .steps, .reveal-up).
   Only blog-specific structure lives here: article header, table of contents,
   long-form prose, comparison tables, and the Field Notes index.
   American English. No em dashes. High contrast, narrow reading column. */

/* ---------- Shared reading column ---------- */
.article{padding:52px 0 0}
.article-col{max-width:768px;margin:0 auto}
.prose{max-width:720px;margin:0 auto}

/* Blog pages add a Resources column to the footer, so widen the grid to six (desktop only) */
@media(min-width:901px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1fr 1fr 1fr}}

/* Reading progress bar. Fills left to right in the article's service accent. */
.read-progress{position:fixed;top:79px;left:0;height:3px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:0 50%;z-index:49;pointer-events:none}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-family:var(--sans);font-weight:400;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink2);margin-bottom:30px}
.breadcrumb a{color:var(--ink2);border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.breadcrumb a:hover{color:var(--accent);border-color:var(--accent)}
.breadcrumb .sep{margin:0 10px;opacity:.45}
.breadcrumb .current{color:var(--ink)}

/* ---------- Article header ---------- */
.article-eyebrow{font-family:var(--sans);font-weight:500;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.article-h1{font-family:var(--serif);font-weight:400;font-size:clamp(33px,4.7vw,57px);line-height:1.06;letter-spacing:.005em;color:var(--ink);margin:18px 0 0;text-wrap:balance}
.standfirst{font-family:var(--sans);font-weight:300;font-size:clamp(19px,2.1vw,23px);line-height:1.5;color:var(--ink2);margin-top:22px;max-width:60ch}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:9px 13px;margin-top:28px;font-family:var(--sans);font-weight:400;font-size:13px;letter-spacing:.02em;color:var(--ink2)}
.article-meta .tag{text-transform:uppercase;letter-spacing:.11em;font-size:11px;font-weight:500;color:var(--accent)}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:currentColor;opacity:.5}
.article-rule{height:2px;width:46px;background:var(--accent);margin:34px 0 0}

/* ---------- Table of contents ---------- */
/* Two-column article layout: sticky TOC rail on the left, reading column on the right */
.article-grid{display:grid;grid-template-columns:232px minmax(0,720px);gap:56px;justify-content:center}
.article-main{min-width:0}
.toc-rail{position:relative}
.toc-sticky{position:sticky;top:96px;max-height:calc(100vh - 112px);overflow-y:auto;padding:2px 10px 2px 0}

/* Shared numbered list (used by the desktop rail and the mobile bar) */
.toc-label{font-family:var(--sans);font-weight:500;font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--ink2);margin-bottom:16px}
.toc-list{list-style:none;margin:0;padding:0;counter-reset:toc;display:grid;gap:12px}
.toc-list li{counter-increment:toc;display:flex;gap:13px;align-items:baseline}
.toc-list li::before{content:counter(toc,decimal-leading-zero);font-family:var(--serif);font-weight:400;font-size:13px;color:var(--accent);min-width:22px;font-feature-settings:"lnum" 1}
.toc-list a{font-family:var(--sans);font-weight:300;font-size:15px;line-height:1.45;color:var(--ink2);border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.toc-list a:hover{color:var(--accent);border-color:var(--accent)}
.toc-list a.active{color:var(--ink);border-color:var(--accent)}

/* Mobile TOC bar (hidden on desktop, shown below 1000px) */
.toc-mobile{display:none}

/* ---------- Long-form prose ---------- */
.prose{font-family:var(--sans);font-weight:300;font-size:18px;line-height:1.75;color:var(--ink2)}
.prose p{max-width:none;margin-top:22px}
.prose > p:first-of-type{margin-top:36px}
.prose h2{font-family:var(--serif);font-weight:400;font-size:clamp(27px,3.4vw,40px);line-height:1.13;letter-spacing:.005em;color:var(--ink);margin:66px 0 0;scroll-margin-top:98px;text-wrap:balance}
.prose h3{font-family:var(--serif);font-weight:400;font-size:clamp(21px,2.4vw,26px);line-height:1.2;color:var(--ink);margin:42px 0 0}
.prose h2 + p,.prose h3 + p{margin-top:16px}
.prose strong{font-family:var(--sans);font-weight:500;color:var(--ink)}
.prose a{color:var(--accent);border-bottom:1px solid var(--accent);transition:opacity .2s}
.prose a:hover{opacity:.65}

/* Lists */
.prose ul,.prose ol{margin:22px 0 0;padding:0;max-width:none;list-style:none}
.prose li{position:relative;margin-top:13px;padding-left:30px;line-height:1.7}
.prose ul > li::before{content:"";position:absolute;left:2px;top:13px;width:9px;height:1px;background:var(--accent)}
.prose ol{counter-reset:pro}
.prose ol > li{counter-increment:pro}
.prose ol > li::before{content:counter(pro) ".";position:absolute;left:0;top:1px;font-family:var(--serif);font-weight:400;font-size:16px;color:var(--accent);font-feature-settings:"lnum" 1}

/* Comparison tables (scroll horizontally on small screens) */
.table-wrap{margin:36px 0 0;overflow-x:auto;border:1px solid var(--hair)}
.prose table{width:100%;border-collapse:collapse;font-family:var(--sans);font-size:14.5px;line-height:1.5;min-width:560px}
.prose thead th{font-family:var(--sans);font-weight:500;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);text-align:left;padding:16px 18px;border-bottom:1px solid var(--hair);background:rgba(11,10,8,.025)}
.prose tbody td{padding:15px 18px;color:var(--ink2);border-bottom:1px solid var(--hair-soft);vertical-align:top}
.prose tbody tr:last-child td{border-bottom:none}
.prose tbody td:first-child{color:var(--ink);font-weight:400}

/* FAQ inside prose: reuse the site accordion, aligned left for reading */
.prose .faq{max-width:none;margin:26px 0 0}
.prose .faq-item{text-align:left}
.prose .faq-q{justify-content:space-between;gap:24px;text-align:left;font-size:clamp(17px,2vw,20px);padding:22px 0}
.prose .faq-a{max-width:none;margin:0;text-align:left;font-size:16.5px;line-height:1.72}
.prose .faq-a p{margin:0;max-width:none}

/* Article footer: attribution + return link */
.article-foot{max-width:720px;margin:64px auto 0;padding:30px 0 64px;border-top:1px solid var(--hair)}
.article-sig{font-family:var(--sans);font-weight:300;font-size:15px;line-height:1.7;color:var(--ink2);max-width:60ch}
.article-sig strong{font-family:var(--serif);font-weight:400;color:var(--ink);font-size:17px}
.article-back{display:inline-block;margin-top:28px;font-family:var(--sans);font-weight:400;font-size:14px;letter-spacing:.04em;color:var(--accent);background:transparent;border:1px solid var(--accent);border-radius:0;padding:13px 26px;transition:background .25s,color .25s}
.article-back:hover{background:var(--accent);color:var(--ivory)}

/* ---------- Newsletter + share (under the TOC on desktop, inline on mobile) ---------- */
.rail-cta{margin-top:30px;padding-top:26px;border-top:1px solid var(--hair)}
.news-sub{font-family:var(--sans);font-weight:300;font-size:13px;line-height:1.5;color:var(--ink2);margin:8px 0 14px}
.news-form{display:flex;flex-direction:column;gap:9px}
.news-form input[type=email]{font-family:var(--sans);font-weight:300;font-size:14px;color:var(--ink);background:transparent;border:1px solid var(--hair);padding:11px 12px;width:100%}
.news-form input[type=email]::placeholder{color:var(--ink2)}
.news-form input[type=email]:focus{outline:none;border-color:var(--accent)}
.news-form button{font-family:var(--sans);font-weight:400;font-size:13px;letter-spacing:.04em;background:var(--accent);color:var(--ivory);border:1px solid var(--accent);padding:11px 14px;cursor:pointer;transition:background .25s,color .25s}
.news-form button:hover{background:transparent;color:var(--accent)}
.news-form button:disabled{opacity:.6;cursor:default}
.rail-cta .form-ok,.article-signup .form-ok{color:var(--accent);font-size:14px;text-align:left;margin:0}
.rail-share{margin-top:26px}
.share-links{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.share-link{font-family:var(--sans);font-weight:400;font-size:13.5px;letter-spacing:.02em;color:var(--ink);background:none;border:none;border-bottom:1px solid transparent;padding:0 0 1px;text-align:left;cursor:pointer;align-self:flex-start;transition:color .2s,border-color .2s}
.share-link:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* Inline version for mobile, where the rail is hidden */
.article-signup{display:none}
@media(max-width:1000px){
  .article-signup{display:block;max-width:720px;margin:56px auto 0;padding-top:30px;border-top:1px solid var(--hair)}
  .article-signup .news-sub{font-size:15px;max-width:54ch}
  .article-signup .news-form{flex-direction:row;flex-wrap:wrap}
  .article-signup .news-form input[type=email]{flex:1;min-width:210px;width:auto}
  .article-signup .rail-share{display:none}
}

/* Mobile action bar: contact + expandable share (articles only) */
.mbar{display:none}
@media(max-width:1000px){
  .mbar{display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px 16px;padding-bottom:calc(10px + env(safe-area-inset-bottom));background:rgba(251,250,246,.96);backdrop-filter:blur(8px);border-top:1px solid var(--hair)}
  .mbar-contact{flex:1;display:inline-flex;align-items:center;justify-content:center;font-family:var(--sans);font-weight:400;font-size:14px;letter-spacing:.04em;background:var(--gold);color:var(--ivory);border:1px solid var(--gold);padding:13px 18px}
  .mbar-share-wrap{position:relative;flex-shrink:0}
  .mbar-share{font-family:var(--sans);font-weight:400;font-size:14px;letter-spacing:.04em;background:transparent;color:var(--ink);border:1px solid var(--hair);padding:13px 22px;cursor:pointer}
  .mbar-menu{position:absolute;right:0;bottom:calc(100% + 10px);min-width:172px;background:var(--ivory);border:1px solid var(--hair);box-shadow:0 10px 34px rgba(11,10,8,.16);display:flex;flex-direction:column;padding:6px;gap:2px}
  .mbar-menu[hidden]{display:none}
  .mbar-menu a,.mbar-menu button{font-family:var(--sans);font-weight:400;font-size:15px;color:var(--ink);background:none;border:none;text-align:left;padding:12px 14px;cursor:pointer;width:100%}
  .mbar-menu a:hover,.mbar-menu button:hover{background:var(--hair-soft);color:var(--accent)}
  body:has(.mbar){padding-bottom:76px}
}

/* ---------- Field Notes index ---------- */
.fn-head{max-width:820px;margin:0 auto;padding:64px 0 0}
.fn-eyebrow{font-family:var(--sans);font-weight:500;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.fn-title{font-family:var(--serif);font-weight:400;font-size:clamp(40px,6vw,72px);line-height:1.02;letter-spacing:.01em;color:var(--ink);margin:16px 0 0}
.fn-intro{font-family:var(--sans);font-weight:300;font-size:clamp(18px,2vw,22px);line-height:1.5;color:var(--ink2);margin-top:22px;max-width:52ch}
/* Ruled editorial grid: a contents page, not cards. No boxes, shadows, radii, or fills.
   Each post hangs under its own hairline top rule with open sides and bottom.
   A short accent segment on the rule and the eyebrow color-code each post by division. */
.fn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:52px 40px;align-items:start;margin:56px 0 0}
.fn-card{position:relative;display:block;padding-top:20px;border-top:1px solid var(--hair)}
.fn-card::before{content:"";position:absolute;top:-1px;left:0;width:40px;height:2px;background:var(--accent);transition:width .25s ease}
.fn-card:hover::before{width:72px}
.fn-card--sentinel{--accent:var(--slate)}
.fn-card--beacon{--accent:var(--sage)}
.fn-card--vantage{--accent:var(--gold)}
.fn-card-eyebrow{font-family:var(--sans);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.fn-card-title{font-family:var(--serif);font-weight:400;font-size:clamp(20px,1.7vw,24px);line-height:1.14;letter-spacing:.005em;color:var(--ink);margin-top:12px;text-wrap:balance;transition:color .2s}
.fn-card:hover .fn-card-title{color:var(--accent)}
.fn-card-dek{font-family:var(--sans);font-weight:300;font-size:15.5px;line-height:1.5;color:var(--ink2);margin-top:12px}
.fn-card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:7px 10px;margin-top:14px;font-family:var(--sans);font-weight:400;font-size:12px;letter-spacing:.02em;color:var(--ink2)}
.fn-card-meta .dot{width:3px;height:3px;border-radius:50%;background:currentColor;opacity:.5}
@media(max-width:1000px){.fn-grid{grid-template-columns:repeat(2,1fr);gap:44px 36px}}
@media(max-width:640px){.fn-grid{grid-template-columns:1fr;gap:0}.fn-card{padding:28px 0}}

/* ---------- Responsive ---------- */
/* Below 1000px the sticky left rail collapses into a sticky bar under the nav */
@media(max-width:1000px){
  .article-grid{grid-template-columns:1fr;gap:0}
  .toc-rail{display:none}
  .toc-mobile{display:block;position:sticky;top:79px;z-index:20;margin:0 0 6px;background:var(--ivory);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
  /* Mobile: the reading progress bar sits at the bottom of the "In this guide" bar, not between it and the nav (nav 79px + guide bar ~52px = 131px) */
  .read-progress{top:131px}
  .toc-mobile summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 2px;font-family:var(--sans);font-weight:500;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
  .toc-mobile summary::-webkit-details-marker{display:none}
  .toc-mobile-mark{font-size:20px;font-weight:300;line-height:1;color:var(--accent);transition:transform .25s}
  .toc-mobile[open] .toc-mobile-mark{transform:rotate(45deg)}
  .toc-mobile .toc-list{padding:2px 2px 20px}
  .toc-mobile .toc-list a{font-size:16px;color:var(--ink)}
  .prose h2{scroll-margin-top:138px}
}
@media(max-width:900px){
  .article{padding:32px 0 0}
  .prose h2{margin:52px 0 0}
  .fn-head{padding:44px 0 0}
}

/* ===== Sightlines cover + signup card (added 2026-08-02) ===== */
.sl-cover{position:relative;aspect-ratio:1200/630;overflow:hidden;background:var(--ivory);border:1px solid var(--hair);display:flex;flex-direction:column;margin:34px 0 0}
.sl-sentinel{--sl-stripe:#213540;--accent:#3E5C6B}.sl-beacon{--sl-stripe:#29321C;--accent:#5E6E44}.sl-vantage{--sl-stripe:#3B2E14;--accent:#B8923C}
.sl-cover__eyebrow{font-family:var(--sans);font-weight:400;text-transform:uppercase;letter-spacing:.22em;font-size:clamp(11px,1.3vw,13px);color:var(--accent);padding:clamp(20px,3.2vw,32px) clamp(24px,4%,46px) 0}
.sl-cover__erule{width:44px;height:1px;background:var(--accent);opacity:.8;margin:11px 0 0 clamp(24px,4%,46px)}
.sl-cover__stripe{position:relative;width:100%;margin-top:clamp(18px,3vw,30px);padding:clamp(24px,4vw,44px) clamp(26px,4.4%,50px);background:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 3px),linear-gradient(104deg,rgba(255,255,255,0) 40%,rgba(255,255,255,.11) 50%,rgba(255,255,255,0) 60%),var(--sl-stripe);box-shadow:inset 0 1px 0 rgba(255,255,255,.07),inset 0 -1px 0 rgba(0,0,0,.28)}
.sl-cover__head{font-family:var(--serif);font-weight:400;color:#FBFAF6;font-size:clamp(21px,3.2vw,37px);line-height:1.16}
.sl-cover__foot{flex:1;display:flex;align-items:flex-end;padding:clamp(12px,2.2vw,20px) clamp(24px,4%,46px)}
.sl-cover__foot span{font-family:var(--serif);color:var(--ink);letter-spacing:.2em;font-size:clamp(12px,1.4vw,15px)}

.sl-card{position:relative;overflow:hidden;border-radius:13px;padding:clamp(22px,5%,32px);display:flex;flex-direction:column;min-height:210px;background:linear-gradient(155deg,#1b1a12,#0B0A08 62%);border:1px solid rgba(184,146,60,.32);box-shadow:0 24px 50px -26px rgba(11,10,8,.5)}
.sl-card::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(120deg,rgba(255,255,255,0) 44%,rgba(255,255,255,.06) 50%,rgba(255,255,255,0) 56%)}
.sl-card__live{display:flex;flex-direction:column;flex:1;position:relative;z-index:2}
.sl-card__title{font-family:var(--serif);font-weight:400;margin:0;font-size:clamp(21px,2.6vw,28px);line-height:1.1;color:#FBFAF6}
.sl-card__ask{font-family:var(--sans);font-weight:400;margin:10px 0 0;font-size:15px;line-height:1.5;color:#FBFAF6;max-width:40ch}
.sl-form{margin-top:auto;padding-top:clamp(16px,4%,24px);display:flex;justify-content:space-between;align-items:flex-end;gap:14px}
.sl-field{display:flex;flex-direction:column;gap:6px;flex:1;min-width:0}
.sl-field label{font-family:var(--sans);font-weight:400;text-transform:uppercase;letter-spacing:.2em;font-size:9px;color:rgba(251,250,246,.55)}
.sl-field input{background:transparent;border:0;border-bottom:1px solid rgba(184,146,60,.55);font-family:var(--sans);font-weight:400;font-size:15px;letter-spacing:.06em;color:#FBFAF6;padding:6px 0;width:100%}
.sl-field input::placeholder{color:rgba(251,250,246,.4)}
.sl-field input:focus{outline:0;border-bottom-color:#B8923C}
.sl-btn{flex:none;border:0;border-radius:5px;cursor:pointer;font-family:var(--sans);font-weight:500;text-transform:uppercase;letter-spacing:.14em;font-size:12px;padding:12px 18px;background:#B8923C;color:#17140C}
.sl-btn:hover{opacity:.9}.sl-btn:disabled{opacity:.6;cursor:default}
.sl-fine{font-family:var(--sans);font-weight:300;font-size:10px;letter-spacing:.08em;color:rgba(251,250,246,.5);margin-top:12px}
.sl-thanks{display:none;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:9px;padding:clamp(18px,5%,30px);position:relative;z-index:2;flex:1}
.sl-thanks__mark{font-family:var(--serif);letter-spacing:.28em;color:#FBFAF6;font-size:clamp(14px,1.8vw,18px)}
.sl-thanks__msg{font-family:var(--serif);color:#B8923C;font-size:clamp(19px,2.6vw,26px);line-height:1.14}
.sl-thanks__sub{font-family:var(--sans);font-weight:300;color:rgba(251,250,246,.72);font-size:13px;line-height:1.5;max-width:32ch}
.sl-card.is-thanks .sl-card__live{display:none}
.sl-card.is-thanks > .sl-thanks{display:flex}
.sl-card--rail{min-height:0}
.sl-card--rail .sl-form{flex-direction:column;align-items:stretch;gap:12px}
.sl-card--rail .sl-btn{width:100%}

.sl-flip{perspective:1500px;max-width:520px;margin:44px auto}
.sl-flip__inner{position:relative;aspect-ratio:1.586/1;transform-style:preserve-3d;transition:transform 1.15s cubic-bezier(.2,.7,.2,1)}
.sl-flip__inner.spin{transform:rotateY(360deg)}
.sl-flip.is-thanks .sl-flip__inner{transform:rotateY(180deg)}
.sl-flip__inner.noanim{transition:none}
.sl-flip__face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.sl-flip__front{transform:rotateY(0)}.sl-flip__back{transform:rotateY(180deg)}
.sl-flip__face .sl-card{position:absolute;inset:0;min-height:0}
.sl-cardback{position:absolute;inset:0;border-radius:13px;overflow:hidden;background:linear-gradient(155deg,#1b1a12,#0B0A08 62%);display:flex;flex-direction:column}
.sl-cardback__stripe{width:100%;height:21%;min-height:46px;margin-top:24px;background:repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 3px),linear-gradient(104deg,rgba(255,255,255,0) 42%,rgba(255,255,255,.07) 50%,rgba(255,255,255,0) 58%),#050505;box-shadow:inset 0 1px 0 rgba(255,255,255,.05),inset 0 -1px 0 rgba(0,0,0,.5)}
.sl-cardback__sig{margin:auto clamp(20px,5%,30px) 0}
.sl-cardback__sig .strip{min-height:32px;border-radius:3px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 14px;background:linear-gradient(90deg,#efeadb,#e6dfcd)}
.sl-cardback__sig .name{font-family:var(--serif);color:#2a2620;letter-spacing:.18em;font-size:14px}
.sl-cardback__sig .desc{font-family:var(--sans);font-weight:400;color:#6a6152;letter-spacing:.04em;font-size:10px;text-align:right}
.sl-cardback__fine{font-family:var(--sans);font-weight:300;font-size:9px;letter-spacing:.16em;color:rgba(251,250,246,.5);padding:12px clamp(20px,5%,30px) 16px}
.sl-flip__back .sl-thanks{position:absolute;inset:0;background:linear-gradient(155deg,#1b1a12,#0B0A08 62%);border-radius:13px}
.sl-flip.is-thanks .sl-cardback{display:none}
.sl-flip.is-thanks .sl-flip__back .sl-thanks{display:flex}
.sl-flip-hint{text-align:center;font-family:var(--sans);font-weight:400;text-transform:uppercase;letter-spacing:.16em;font-size:11px;color:#B8923C;margin:14px 0 0}
@media(prefers-reduced-motion:reduce){.sl-flip__inner{transition:none}}

/* Author bio (article top) */
.article-author{display:flex;gap:15px;align-items:center;margin:4px 0 30px}
.article-author__photo{width:58px;height:58px;border-radius:50%;object-fit:cover;object-position:50% 20%;flex:none}
.article-author__text{font-family:var(--sans);font-weight:300;font-size:14px;line-height:1.6;color:var(--secondary);margin:0;max-width:62ch}
.article-author__text strong{font-weight:500;color:var(--ink)}
.article-author__text a{color:var(--gold);white-space:nowrap}
.article-author__text a:hover{text-decoration:underline}