/* ============================================================
   THE SOLAR ARCHIVE — Apolloism
   Sunlight entering a room of old books.
   Daylight is the dominant state. Night is ceremonial and rare.
   ============================================================ */

:root{
  /* colour */
  --solar:#F2C94C; --solar-ink:#8A6410; --solar-wash:#FBEFC9; --solar-deep:#E0B534;
  --cobalt:#1746A2; --cobalt-wash:#E7EDF8; --cobalt-dark:#0F3378;
  --linen:#F6F1E7; --linen-deep:#EDE5D4; --paper:#FFFDF7;
  --ink:#171A1F; --ink-soft:#5A6069;
  --night:#07162D; --night-soft:#9FB0C8; --night-text:#E6ECF5;
  --rival:#9A3D35; --rival-wash:#F6EAE8;
  --rule:#DFD6C2;

  /* type */
  --display:"Brygada 1918",Georgia,"Times New Roman",serif;
  --read:"Literata",Georgia,"Times New Roman",serif;
  --ui:"Atkinson Hyperlegible","Atkinson Hyperlegible Next",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;

  /* space, shape, motion */
  --gutter:clamp(20px,5vw,72px);
  --r-chip:3px; --r-field:8px; --r-card:10px;
  --reveal:1200ms cubic-bezier(.2,.7,.25,1);
  --quick:160ms ease;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--linen);color:var(--ink);
  font-family:var(--ui);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
button,input,select{font:inherit;color:inherit}
button,a{touch-action:manipulation}
h1,h2,h3{margin:0;font-family:var(--display);font-weight:600;letter-spacing:-.01em;line-height:1.12}
p{margin:0}
a{color:var(--cobalt);text-decoration:none}
a:hover{color:var(--cobalt-dark)}
cite{font-style:italic}

/* focus is always visible */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--cobalt);outline-offset:2px;border-radius:2px;
}

.skip-link{position:fixed;left:16px;top:-80px;background:var(--night);color:var(--solar-wash);padding:12px 18px;z-index:200;border-radius:0 0 var(--r-field) var(--r-field)}
.skip-link:focus{top:0}

.overline{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:12px}
.overline.solar{color:var(--solar)}
.ray{height:3px;width:250px;max-width:60%;background:linear-gradient(90deg,var(--solar),rgba(242,201,76,0));border-radius:2px}
.section-label{font-family:var(--ui);font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}

/* ---------- the solar measure ---------- */
.solar-measure{position:fixed;top:0;left:0;right:0;height:2px;background:var(--linen-deep);z-index:60}
.solar-measure > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--solar-deep),var(--solar) 55%,#FFF0BE);box-shadow:0 0 10px rgba(242,201,76,.85);transition:width 90ms linear}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:2px;z-index:50;height:76px;padding:0 var(--gutter);
  display:flex;align-items:center;justify-content:space-between;
  background:rgba(255,253,247,.97);border-bottom:1px solid var(--rule);backdrop-filter:saturate(140%) blur(6px);
}
.brand{display:flex;align-items:center;gap:13px;color:var(--ink)}
.brand-sun{width:20px;height:20px;border-radius:50%;background:var(--solar);box-shadow:0 0 0 5px var(--solar-wash);flex:none}
.brand-words{display:flex;flex-direction:column;gap:3px}
.brand-words strong{font-family:var(--display);font-size:17px;font-weight:600}
.brand-words small{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
#main-nav{display:flex;align-items:center;gap:4px}
#main-nav a{padding:9px 14px;border-radius:6px;font-size:14px;font-weight:700;color:var(--ink-soft)}
#main-nav a:hover{color:var(--ink);background:var(--cobalt-wash)}
#main-nav a.active{color:var(--ink);background:var(--solar-wash)}
.menu-button{display:none;align-items:center;justify-content:center;gap:8px;width:46px;height:46px;border:1px solid var(--rule);background:var(--paper);border-radius:var(--r-field);cursor:pointer}
.menu-bars{position:relative;width:18px;height:2px;background:var(--ink);display:block}
.menu-bars::before,.menu-bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.menu-bars::before{top:-6px}.menu-bars::after{top:6px}
.menu-word{display:none}

.view{min-height:calc(100vh - 78px)}

/* ================= HOME ================= */
.welcome{
  background:var(--night);
  padding:clamp(64px,9vw,104px) var(--gutter) clamp(56px,8vw,92px);
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.62fr);gap:clamp(32px,6vw,72px);align-items:center;
  transition:background-color var(--reveal);
}
.welcome-copy{display:flex;flex-direction:column;gap:26px}
.thesis{font-size:clamp(38px,5.2vw,74px);line-height:1.04;max-width:15ch;color:#F3E9CF;text-wrap:pretty;transition:color var(--reveal)}
.welcome-lede{font-family:var(--read);font-size:clamp(17px,1.5vw,20px);line-height:1.62;max-width:60ch;color:var(--night-soft);transition:color var(--reveal)}
.welcome .ray{transform:scaleX(0);transform-origin:left center;transition:transform 1500ms cubic-bezier(.2,.7,.25,1) 180ms}
.welcome-disc{display:flex;justify-content:center;align-items:center}
.disc{
  width:clamp(120px,15vw,210px);aspect-ratio:1;border-radius:50%;display:block;
  background:radial-gradient(circle at 38% 34%,#FFF0BE,var(--solar) 62%,var(--solar-deep));
  transform:translateY(46px) scale(.72);opacity:.28;box-shadow:0 0 0 0 rgba(242,201,76,0);
  transition:transform 1400ms cubic-bezier(.2,.7,.25,1),opacity 1400ms ease,box-shadow 1400ms ease;
}
/* daylight */
.welcome.day{background:var(--linen)}
.welcome.day .thesis{color:var(--ink)}
.welcome.day .welcome-lede{color:var(--ink-soft)}
.welcome.day .ray{transform:scaleX(1)}
.welcome.day .disc{transform:none;opacity:1;box-shadow:0 0 0 14px rgba(242,201,76,.16),0 0 64px 18px rgba(242,201,76,.30)}

/* three doors */
.doors{padding:64px var(--gutter) 76px;background:var(--paper);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.doors-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.doors-head h2{font-family:var(--ui);font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
.doors-head p{font-family:var(--mono);font-size:12px;color:var(--ink-soft)}
.doors-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.door{
  display:flex;flex-direction:column;gap:12px;align-items:flex-start;text-align:left;
  background:var(--linen);border:1px solid var(--rule);border-radius:var(--r-card);
  padding:26px 24px 22px;cursor:pointer;color:var(--ink);min-height:44px;
  transition:border-color var(--quick),box-shadow var(--quick),transform var(--quick);
}
.door:hover{border-color:var(--cobalt);box-shadow:0 10px 30px rgba(23,51,107,.10);transform:translateY(-2px);color:var(--ink)}
.door strong{font-family:var(--display);font-size:clamp(22px,2vw,27px);font-weight:600;line-height:1.15}
.door-copy{font-family:var(--read);font-size:16px;line-height:1.6;color:var(--ink-soft);flex-grow:1}
.door-meta{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase}
.door-mark{width:26px;height:26px;display:block}
.door-solar .door-mark{border-radius:50%;background:var(--solar);box-shadow:0 0 0 6px var(--solar-wash)}
.door-solar .door-meta{color:var(--solar-ink)}
.door-cobalt .door-mark{border-radius:4px;border:3px solid var(--cobalt)}
.door-cobalt .door-meta{color:var(--cobalt)}
.door-rival .door-mark{border-radius:50%;border:3px solid var(--rival)}
.door-rival .door-meta{color:var(--rival)}

/* by the end you can explain */
.course-preamble{padding:64px var(--gutter) 8px;max-width:980px}
.course-preamble h2{font-size:clamp(28px,3vw,38px);margin-bottom:22px}
#hero-lesson-list{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px 30px}
#hero-lesson-list li{display:flex;gap:14px;align-items:baseline;font-family:var(--read);font-size:17px;line-height:1.5;padding-bottom:14px;border-bottom:1px solid var(--rule)}
#hero-lesson-list li span{font-family:var(--mono);font-size:12px;color:var(--solar-ink);flex:none}

/* ---------- course ---------- */
.course-shell{display:grid;grid-template-columns:312px minmax(0,1fr);align-items:start;padding-top:56px}
.lesson-rail{position:sticky;top:96px;padding:0 34px 60px var(--gutter)}
.rail-heading p{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:8px}
.rail-heading strong{font-family:var(--display);font-size:24px;font-weight:600;display:block;margin-bottom:18px}
.progress-track{height:2px;background:var(--linen-deep);border-radius:2px;overflow:hidden;margin-bottom:22px}
.progress-track span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--solar-deep),var(--solar));box-shadow:0 0 10px rgba(242,201,76,.85);transition:width 420ms cubic-bezier(.2,.7,.25,1)}
#lesson-nav{margin:0;padding:0 0 0 18px;list-style:none;display:flex;flex-direction:column;gap:6px;border-left:2px solid var(--linen-deep)}
#lesson-nav button{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;width:100%;
  background:none;border:0;padding:11px 12px 11px 0;text-align:left;cursor:pointer;border-radius:6px;min-height:44px;
  transition:background var(--quick);
}
#lesson-nav button:hover{background:var(--cobalt-wash)}
#lesson-nav button > span:first-child{font-family:var(--mono);font-size:11px;color:var(--ink-soft);width:16px}
#lesson-nav button strong{display:block;font-family:var(--display);font-size:17px;font-weight:500;color:var(--ink-soft)}
#lesson-nav button small{display:block;font-family:var(--mono);font-size:10px;color:var(--ink-soft);margin-top:3px}
#lesson-nav button i{font-style:normal;color:transparent;font-size:13px}
#lesson-nav button.complete > span:first-child{color:var(--solar-ink)}
#lesson-nav button.complete i{color:var(--solar-ink)}
#lesson-nav button.current strong{font-weight:600;font-size:19px;color:var(--ink)}
.rail-note{font-family:var(--read);font-size:13px;line-height:1.6;color:var(--ink-soft);margin-top:26px}

.lesson-card{background:var(--paper);border-left:1px solid var(--rule);padding:56px clamp(24px,5vw,96px) 72px}
.lesson-card:focus{outline:none}
.lesson-kicker{display:flex;gap:14px;align-items:baseline;margin-bottom:14px}
.lesson-number,.lesson-time{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--solar-ink)}
.lesson-time{color:var(--ink-soft)}
#lesson-title{font-size:clamp(32px,4vw,52px);line-height:1.08;margin-bottom:20px;max-width:20ch}
.lesson-question{font-family:var(--read);font-style:italic;font-size:clamp(18px,1.7vw,22px);line-height:1.55;color:var(--ink-soft);margin-bottom:26px}
.short-answer{background:var(--solar-wash);border-radius:var(--r-card);padding:22px 26px;display:flex;flex-direction:column;gap:7px;margin-bottom:44px}
.short-answer span{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--solar-ink)}
.short-answer p{font-family:var(--read);font-size:clamp(17px,1.5vw,19px);line-height:1.55}

.lesson-body{max-width:68ch;display:flex;flex-direction:column;gap:24px}
.lesson-body p{font-family:var(--read);font-size:clamp(17px,1.5vw,19px);line-height:1.78}
/* the four note types, as generated by learning.js */
.lesson-definition,.worked-example,.lesson-note,.plain-translation,.note{
  border-left:3px solid var(--rule);border-radius:0 var(--r-field) var(--r-field) 0;padding:18px 22px;display:flex;flex-direction:column;gap:8px;
}
.lesson-definition{background:var(--cobalt-wash);border-left-color:var(--cobalt)}
.lesson-definition span{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--cobalt)}
.lesson-definition p{font-size:17px !important;line-height:1.62 !important}
.worked-example{background:var(--solar-wash);border-left-color:var(--solar)}
.worked-example h3{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--solar-ink)}
.worked-example p{font-size:17px !important;line-height:1.62 !important}
.lesson-note{background:var(--rival-wash);border-left-color:var(--rival)}
.lesson-note h3{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--rival)}
.lesson-note p{font-size:17px !important;line-height:1.62 !important}
.plain-translation{background:#EFEDE7;border-left-color:var(--ink)}
.plain-translation strong{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink)}

.lesson-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;margin-top:52px}
.remember-box,.term-box{border:1px solid var(--rule);border-radius:var(--r-card);padding:24px 26px}
.remember-box h3,.term-box h3{font-size:21px;margin-bottom:14px}
#lesson-remember{margin:0;padding-left:19px;display:flex;flex-direction:column;gap:10px;font-family:var(--read);font-size:16px;line-height:1.6;color:var(--ink-soft)}
#lesson-terms{margin:0;display:flex;flex-direction:column;gap:12px}
#lesson-terms div{display:flex;flex-direction:column;gap:3px}
#lesson-terms dt{font-family:var(--mono);font-size:12px;color:var(--cobalt)}
#lesson-terms dd{margin:0;font-family:var(--read);font-size:15px;line-height:1.55;color:var(--ink-soft)}

.check-box{margin-top:44px;background:var(--linen);border-radius:var(--r-card);padding:30px 32px}
.check-box .overline{margin-bottom:10px}
#check-title{font-size:clamp(20px,2vw,24px);line-height:1.25;margin-bottom:20px}
#quiz-options{display:flex;flex-direction:column;gap:10px;max-width:74ch}
#quiz-options button{
  background:var(--paper);border:1px solid var(--rule);border-radius:var(--r-field);
  padding:15px 18px;font-family:var(--read);font-size:16px;text-align:left;cursor:pointer;min-height:44px;
  transition:border-color var(--quick),box-shadow var(--quick),background var(--quick);
}
#quiz-options button:hover{border-color:var(--cobalt)}
#quiz-options button.selected{border-width:2px;padding:14px 17px}
#quiz-options button.correct{border-color:var(--solar);box-shadow:0 0 0 4px var(--solar-wash)}
.quiz-feedback{font-family:var(--read);font-size:16px;line-height:1.6;margin-top:16px}
.quiz-feedback.right{color:var(--solar-ink)}
.quiz-feedback.wrong{color:var(--rival)}

.teach-back{margin-top:26px;border:1px dashed var(--rule);border-radius:var(--r-card);padding:24px 28px}
.teach-back summary{font-family:var(--display);font-size:20px;font-weight:600;cursor:pointer;list-style:none}
.teach-back summary::-webkit-details-marker{display:none}
.teach-back summary::before{content:"+ ";color:var(--solar-ink);font-family:var(--mono)}
.teach-back[open] summary::before{content:"– "}
.teach-back p{font-family:var(--read);font-size:17px;line-height:1.6;color:var(--ink-soft);margin-top:12px}
#show-teach-back{margin-top:14px;background:none;border:1px solid var(--rule);border-radius:var(--r-field);padding:11px 18px;font-size:14px;font-weight:700;cursor:pointer;min-height:44px}
#show-teach-back:hover{border-color:var(--cobalt)}

.reading-box{margin-top:44px}
.reading-head h3{font-size:21px;margin-bottom:6px}
.reading-head p{font-family:var(--read);font-size:15px;color:var(--ink-soft);margin-bottom:16px}
#lesson-readings{display:flex;flex-direction:column}
.reading-link{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 20px;align-items:baseline;width:100%;
  background:none;border:0;border-bottom:1px solid var(--rule);padding:16px 0;text-align:left;cursor:pointer;min-height:44px;
  transition:background var(--quick);
}
.reading-link:hover{background:var(--cobalt-wash)}
.reading-link strong{grid-column:1;grid-row:1;font-family:var(--display);font-size:18px;font-weight:500;color:var(--ink)}
.reading-link span{grid-column:2;grid-row:1;font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.reading-link small{grid-column:1/-1;grid-row:2;font-family:var(--mono);font-size:10px;color:var(--ink-soft)}
.missing-reading{font-family:var(--read);color:var(--ink-soft)}

.lesson-footer{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-top:52px;padding-top:26px;border-top:1px solid var(--rule);flex-wrap:wrap}
.primary-action,.secondary-action{border-radius:var(--r-field);padding:14px 26px;font-size:15px;font-weight:700;cursor:pointer;min-height:48px;border:1px solid var(--rule);background:none;color:var(--ink)}
.primary-action{background:var(--night);border-color:var(--night);color:var(--solar-wash)}
.primary-action:hover{background:#0B2242}
.secondary-action:hover{border-color:var(--cobalt)}
.secondary-action[disabled]{opacity:.4;cursor:not-allowed}

/* founding footer */
.founding{background:var(--night);color:var(--night-soft);padding:72px var(--gutter) 60px;margin-top:72px}
.founding-inner{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(32px,6vw,72px)}
.founding-lede{font-family:var(--read);font-size:19px;line-height:1.68;color:var(--night-text)}
.founding-counts{font-family:var(--mono);font-size:12px;line-height:1.9;color:#8FA2BC;margin-top:24px}
.founding-side{display:flex;flex-direction:column;gap:14px;justify-content:flex-end;align-items:flex-start}
.founding-side p{font-family:var(--read);font-size:15px;line-height:1.65;max-width:52ch}

/* ================= SHARED VIEW INTRO ================= */
.view-intro{padding:56px var(--gutter) 34px;max-width:1180px}
.view-intro h1{font-size:clamp(34px,4.4vw,48px);line-height:1.08;margin-bottom:16px}
.view-intro > p{font-family:var(--read);font-size:clamp(17px,1.6vw,19px);line-height:1.65;color:var(--ink-soft);max-width:74ch}

/* ================= ARCHIVE ================= */
.library-layout{display:grid;grid-template-columns:288px minmax(0,1fr);align-items:start}
.library-filters{position:sticky;top:96px;padding:0 34px 72px var(--gutter);display:flex;flex-direction:column;gap:20px}
.filter-block{display:flex;flex-direction:column;gap:8px}
.library-filters label{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft)}
.search-field{display:flex;align-items:center;gap:10px;border:1px solid var(--rule);background:var(--paper);border-radius:var(--r-field);padding:0 14px;height:48px;color:var(--ink-soft)}
.search-field:focus-within{border-color:var(--cobalt);box-shadow:0 0 0 3px var(--cobalt-wash)}
.search-field input{flex:1;border:0;background:none;height:46px;font-size:15px;outline:none;min-width:0}
.library-filters select{
  height:48px;border:1px solid var(--rule);background:var(--paper);border-radius:var(--r-field);padding:0 14px;font-size:15px;cursor:pointer;
  appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%235A6069' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:38px;
}
#clear-filters{border:1px solid var(--rule);background:none;border-radius:var(--r-field);padding:13px 18px;font-size:14px;font-weight:700;cursor:pointer;min-height:48px}
#clear-filters:hover{border-color:var(--cobalt)}
.filter-note{font-family:var(--read);font-size:13px;line-height:1.6;color:var(--ink-soft);padding-top:14px;border-top:1px solid var(--rule)}

.library-results{background:var(--paper);border-left:1px solid var(--rule);padding:0 var(--gutter) 80px clamp(20px,3vw,48px);min-height:80vh}
.results-heading{display:flex;align-items:baseline;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:22px 0 18px;position:sticky;top:78px;background:var(--paper);border-bottom:1px solid var(--rule);z-index:10}
#article-count{font-size:26px}
#filter-summary{font-family:var(--mono);font-size:12px;color:var(--ink-soft)}

/* topic index — a serious index, not floating cards */
.topic-guide{display:flex;flex-direction:column;margin-top:30px}
.topic-guide button{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr) 100px;gap:24px;align-items:baseline;width:100%;
  background:none;border:0;border-bottom:1px solid var(--rule);padding:16px 0;text-align:left;cursor:pointer;min-height:44px;
  transition:background var(--quick);
}
.topic-guide button:hover{background:var(--cobalt-wash)}
.topic-guide button strong{font-family:var(--display);font-size:20px;font-weight:500;color:var(--ink)}
.topic-guide button span{font-family:var(--read);font-size:14px;line-height:1.5;color:var(--ink-soft)}
.topic-guide button small{font-family:var(--mono);font-size:11px;color:var(--ink-soft);text-align:right}

/* article rows */
.article-grid{display:flex;flex-direction:column;margin-top:30px}
.article-card{
  display:grid;grid-template-columns:minmax(0,1fr) 132px 104px;gap:6px 24px;align-items:baseline;
  padding:18px 0;border-bottom:1px solid var(--rule);transition:background var(--quick);
}
.article-card:hover{background:var(--cobalt-wash)}
.article-card h3{grid-column:1;grid-row:1;font-family:var(--display);font-size:19px;font-weight:500;line-height:1.25}
.article-card .article-meta{grid-column:2;grid-row:1;display:flex;flex-direction:column;gap:4px}
.article-card .article-meta span{font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.article-card .article-meta span:last-child{color:var(--solar-ink)}
.article-card p{grid-column:1;grid-row:2;font-family:var(--read);font-size:14px;line-height:1.55;color:var(--ink-soft);max-width:78ch;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-card footer{grid-column:3;grid-row:1/3;display:flex;flex-direction:column;gap:8px;align-items:flex-end;justify-content:flex-start}
.article-card footer small{font-family:var(--mono);font-size:10px;color:var(--ink-soft);text-align:right;line-height:1.5}
.article-card footer button{
  border:1px solid var(--rule);background:var(--linen);border-radius:var(--r-field);padding:9px 14px;font-size:13px;font-weight:700;cursor:pointer;white-space:nowrap;min-height:44px;
}
.article-card footer button:hover{border-color:var(--cobalt);background:var(--paper)}
.no-results{padding:60px 0;text-align:center}
.no-results h3{font-size:24px;margin-bottom:8px}
.no-results p{font-family:var(--read);color:var(--ink-soft)}
.load-more{margin:34px auto 0;display:block}

/* ================= GLOSSARY ================= */
.glossary-search{display:flex;flex-direction:column;gap:8px;padding:0 var(--gutter);max-width:520px;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft)}
.glossary-search input{border:1px solid var(--rule);background:var(--paper);border-radius:var(--r-field);height:48px;padding:0 14px;font-size:15px;text-transform:none;letter-spacing:normal;font-weight:400;color:var(--ink)}
.glossary-search input:focus{outline:none;border-color:var(--cobalt);box-shadow:0 0 0 3px var(--cobalt-wash)}
.glossary-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;padding:34px var(--gutter) 80px}
.glossary-grid article{background:var(--paper);border:1px solid var(--rule);border-radius:var(--r-card);padding:22px 24px;display:flex;flex-direction:column;gap:10px}
.glossary-grid h2{font-size:22px}
.glossary-grid p{font-family:var(--read);font-size:15px;line-height:1.6;color:var(--ink-soft);flex-grow:1}
.glossary-source{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}
.glossary-grid button{align-self:flex-start;border:1px solid var(--rule);background:none;border-radius:var(--r-field);padding:10px 15px;font-size:13px;font-weight:700;cursor:pointer;min-height:44px}
.glossary-grid button:hover{border-color:var(--cobalt);background:var(--cobalt-wash)}

/* ================= EVIDENCE ================= */
.evidence-view .section-label{padding:0 var(--gutter);margin-bottom:20px}
.note{border-left:3px solid var(--rule);border-radius:0 var(--r-field) var(--r-field) 0;padding:20px 24px;display:flex;flex-direction:column;gap:8px;background:var(--paper)}
.note p{font-family:var(--read);font-size:16px;line-height:1.6}
.note-tag{font-family:var(--mono) !important;font-size:11px !important;letter-spacing:.06em;text-transform:uppercase;line-height:1.4 !important}
.note-meta{font-family:var(--mono) !important;font-size:11px !important;color:var(--ink-soft);line-height:1.5 !important}
.n-def{background:var(--cobalt-wash);border-left-color:var(--cobalt)}
.n-def .note-tag{color:var(--cobalt)}
.n-read{background:var(--solar-wash);border-left-color:var(--solar)}
.n-read .note-tag{color:var(--solar-ink)}
.n-rival{background:var(--rival-wash);border-left-color:var(--rival)}
.n-rival .note-tag{color:var(--rival)}
.n-ext{background:#EFEDE7;border-left-color:var(--ink)}
.n-ext .note-tag{color:var(--ink)}
/* neutral — for orientation notes that are NOT one of the four types */
.n-plain{background:var(--linen);border-left-color:var(--rule)}
.n-plain .note-tag{color:var(--ink-soft)}
.note-types{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;padding:0 var(--gutter) 56px}

.traced{padding:56px var(--gutter) 60px;background:var(--paper);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.traced h2{font-size:clamp(26px,3vw,34px);margin-bottom:8px}
.traced-lede{font-family:var(--read);font-size:17px;color:var(--ink-soft);margin-bottom:36px;max-width:74ch}
.trace-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px;border-left:2px solid var(--linen-deep);margin-left:7px}
.trace-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:24px;align-items:start;padding-left:0}
.trace-mark{width:14px;height:14px;border-radius:50%;margin-left:-8px;margin-top:6px;flex:none}
.trace-solar{background:var(--solar);box-shadow:0 0 0 4px var(--solar-wash)}
.trace-cobalt{background:var(--cobalt)}
.trace-ink{background:var(--ink)}
.trace-rival{background:var(--rival)}
.trace-body{display:flex;flex-direction:column;gap:10px}
.trace-step{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.trace-claim{font-family:var(--display);font-size:clamp(20px,2vw,25px);line-height:1.3;max-width:62ch}

.evidence-sources{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;padding:60px var(--gutter) 80px}
.ev-card{border:1px solid var(--rule);border-radius:var(--r-card);padding:28px 30px;background:var(--paper)}
.ev-card h2{font-size:26px;margin-bottom:12px}
.ev-card p{font-family:var(--read);font-size:16px;line-height:1.65;color:var(--ink-soft)}
.ev-card ul{margin:0;padding-left:19px;display:flex;flex-direction:column;gap:8px;font-family:var(--read);font-size:16px;color:var(--ink-soft)}

/* ================= ARTICLE READER ================= */
#article-reader{
  width:min(1180px,94vw);max-width:none;max-height:92vh;padding:0;border:0;border-radius:var(--r-card);
  background:var(--linen);color:var(--ink);overflow:hidden;box-shadow:0 40px 120px rgba(7,22,45,.42);
}
#article-reader::backdrop{background:rgba(7,22,45,.62)}
.reader-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px;padding:0 22px;
  background:var(--paper);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:5;
}
#close-reader{display:flex;align-items:center;gap:9px;background:none;border:0;font-size:14px;font-weight:700;color:var(--ink-soft);cursor:pointer;min-height:44px}
#close-reader:hover{color:var(--ink)}
.reader-kind{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft)}
.reader-notes-toggle{border:1px solid var(--rule);background:var(--linen);border-radius:999px;padding:8px 15px;font-size:13px;font-weight:700;cursor:pointer;min-height:44px}
.reader-notes-toggle:hover{border-color:var(--cobalt)}
.reader-shell{display:grid;grid-template-columns:minmax(0,1fr) 320px;max-height:calc(92vh - 64px);overflow:auto}
.reader-article{padding:48px clamp(24px,4vw,64px) 72px}
.reader-article header{margin-bottom:34px}
#reader-tags{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
#reader-tags span{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;padding:4px 9px;border-radius:var(--r-chip);background:var(--solar-wash);color:var(--solar-ink)}
#reader-tags span:nth-child(n+2){background:var(--cobalt-wash);color:var(--cobalt)}
#reader-title{font-size:clamp(30px,3.6vw,48px);line-height:1.07;margin-bottom:14px;max-width:22ch}
#reader-meta{font-family:var(--mono);font-size:12px;color:var(--ink-soft);margin-bottom:26px}
#reader-body{max-width:68ch;display:flex;flex-direction:column;gap:20px}
#reader-body p{font-family:var(--read);font-size:clamp(17px,1.5vw,19px);line-height:1.78}
#reader-body h2{font-size:clamp(21px,2.2vw,27px);line-height:1.25;margin-top:22px}
.reader-article footer{margin-top:44px;padding-top:22px;border-top:1px solid var(--rule)}
#reader-source{font-family:var(--mono);font-size:12px}
.reader-rail{border-left:1px solid var(--rule);background:var(--paper);padding:48px 30px 72px;display:flex;flex-direction:column;gap:14px}
.reader-rail.hidden{display:none}
.reader-rail .note{padding:16px 18px}
.reader-rail .note p{font-size:15px;line-height:1.6}
.rail-title{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.rail-locator{font-family:var(--mono);font-size:11px;line-height:1.7;color:var(--ink-soft);word-break:break-all}

/* ================= PHONE ================= */
@media (max-width:900px){
  .doors-grid{grid-template-columns:1fr}
  .course-shell{grid-template-columns:1fr;padding-top:34px}
  .lesson-rail{position:static;padding:0 var(--gutter) 30px}
  .lesson-card{border-left:0;border-top:1px solid var(--rule)}
  .lesson-pair{grid-template-columns:1fr;gap:16px;margin-top:36px}
  .library-layout{grid-template-columns:1fr}
  .library-filters{position:static;padding:0 var(--gutter) 24px}
  .library-results{border-left:0;border-top:1px solid var(--rule);padding:0 var(--gutter) 60px}
  .results-heading{top:76px}
  .note-types{grid-template-columns:repeat(2,minmax(0,1fr))}
  .evidence-sources{grid-template-columns:1fr}
  .founding-inner{grid-template-columns:1fr}
  .welcome{grid-template-columns:1fr}
  .welcome-disc{order:-1;justify-content:flex-start}
  .reader-shell{grid-template-columns:1fr}
  .reader-rail{border-left:0;border-top:1px solid var(--rule);padding:24px var(--gutter) 48px}
}

@media (max-width:768px){
  body{font-size:16px}
  .menu-button{display:flex}
  #main-nav{
    display:none;position:absolute;top:76px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--paper);border-bottom:1px solid var(--rule);padding:8px 12px 16px;
    box-shadow:0 22px 50px rgba(7,22,45,.16);
  }
  #main-nav.open{display:flex}
  #main-nav a{min-height:56px;display:flex;align-items:center;padding:0 14px;font-size:18px;border-radius:var(--r-field)}
  .doors-head{margin-bottom:20px}
  /* get the articles above the fold: search full width, the rest two-up */
  .library-filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .library-filters .filter-block:first-child{grid-column:1/-1}
  .library-filters #clear-filters{grid-column:1/-1}
  .library-filters .filter-note{grid-column:1/-1}
  .articles-view .view-intro{padding-top:32px;padding-bottom:22px}
  .articles-view .view-intro > p{font-size:16px}
  /* the topic index stays an index, but one scannable line per topic */
  .topic-guide button{grid-template-columns:minmax(0,1fr) auto;gap:0 14px;padding:14px 0;min-height:52px;align-items:center}
  .topic-guide button strong{grid-column:1;grid-row:1;font-size:18px}
  .topic-guide button small{grid-column:2;grid-row:1;text-align:right}
  .topic-guide button span{display:none}
  .article-card{grid-template-columns:1fr;gap:8px}
  .article-card h3,.article-card p,.article-card .article-meta,.article-card footer{grid-column:1;grid-row:auto}
  .article-card .article-meta{flex-direction:row;gap:10px}
  .article-card footer{flex-direction:row;align-items:center;justify-content:space-between;width:100%}
  .article-card footer small{text-align:left}
  .note-types{grid-template-columns:1fr}
  #article-reader{width:100vw;height:100dvh;max-height:100dvh;border-radius:0}
  .reader-shell{max-height:calc(100dvh - 64px)}
  .lesson-footer{flex-direction:column;align-items:stretch}
  .lesson-footer button{width:100%}
  .trace-list li{gap:16px}
}

/* ================= REDUCED MOTION ================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .welcome{background:var(--linen)}
  .thesis{color:var(--ink)}
  .welcome-lede{color:var(--ink-soft)}
  .welcome .ray{transform:none}
  .disc{transform:none;opacity:1;box-shadow:0 0 0 14px rgba(242,201,76,.16),0 0 64px 18px rgba(242,201,76,.30)}
}

@media print{
  .site-header,.solar-measure,.lesson-rail,.library-filters,.reader-bar{display:none}
  body{background:#fff}
}

/* ============================================================
   V2 — faceted pills, series, continuous reading, glossary index
   ============================================================ */

/* the real selects keep working, out of sight and out of the tab order */
.filter-block--shadow{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.facets{display:flex;flex-direction:column;gap:20px}
.facet{display:flex;flex-direction:column;gap:9px}
.facet-label{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft)}
.facet-row{display:flex;flex-wrap:wrap;gap:7px}
.facet-pill{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;
  border:1px solid var(--rule);background:var(--paper);border-radius:999px;
  padding:8px 15px;font-size:13px;font-weight:700;color:var(--ink-soft);cursor:pointer;
  transition:border-color var(--quick),background var(--quick),color var(--quick);
}
.facet-pill:hover:not(:disabled){border-color:var(--cobalt);color:var(--ink)}
.facet-pill .facet-count{font-family:var(--mono);font-size:11px;font-weight:400;opacity:.75}
.facet-pill.on{background:var(--night);border-color:var(--night);color:var(--solar-wash)}
.facet-pill.on .facet-count{opacity:.9}
.facet-pill.empty,.facet-pill:disabled{opacity:.38;cursor:not-allowed}

/* series installments name their series */
.series-tag{
  grid-column:1;grid-row:1;align-self:start;
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--cobalt);margin-bottom:2px;display:flex;gap:7px;align-items:center;
}
.series-tag span{
  background:var(--cobalt-wash);color:var(--cobalt);border-radius:var(--r-chip);
  padding:2px 6px;font-size:9px;letter-spacing:.08em;
}
.article-card:has(.series-tag) h3{grid-row:2}
.article-card:has(.series-tag) p{grid-row:3}
.article-card:has(.series-tag) footer{grid-row:1/4}

.empty-hint{font-family:var(--read);font-size:15px;line-height:1.6;color:var(--ink-soft);margin-top:12px;max-width:56ch;margin-left:auto;margin-right:auto}

/* the reader moves between articles and shows its own depth */
.reader-move{display:flex;align-items:center;gap:14px;min-width:0}
.reader-step{
  border:1px solid var(--rule);background:var(--linen);border-radius:999px;
  padding:8px 15px;font-size:13px;font-weight:700;color:var(--ink);cursor:pointer;min-height:44px;white-space:nowrap;
}
.reader-step:hover:not(:disabled){border-color:var(--cobalt)}
.reader-step:disabled{opacity:.35;cursor:not-allowed}
.reader-measure{height:2px;background:var(--linen-deep);position:sticky;top:64px;z-index:4}
.reader-measure > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--solar-deep),var(--solar) 55%,#FFF0BE);box-shadow:0 0 10px rgba(242,201,76,.85)}

/* glossary A to Z */
.glossary-index{display:flex;flex-wrap:wrap;gap:6px;padding:24px var(--gutter) 0}
.glossary-index a{
  display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;
  border:1px solid var(--rule);border-radius:var(--r-field);background:var(--paper);
  font-family:var(--mono);font-size:13px;font-weight:500;color:var(--ink-soft);
}
.glossary-index a:hover{border-color:var(--cobalt);background:var(--cobalt-wash);color:var(--cobalt)}
.glossary-grid article.flash{box-shadow:0 0 0 3px var(--solar);transition:box-shadow 240ms ease}

@media (max-width:768px){
  .facet-row{gap:6px}
  .facet-pill{padding:8px 13px;font-size:12px}
  .reader-move{gap:8px}
  .reader-step{padding:8px 11px;font-size:12px}
  .reader-bar{height:auto;padding:10px 14px;flex-wrap:wrap;gap:8px}
  .reader-measure{top:0;position:static}
  #reader-position{font-size:10px}
  .article-card:has(.series-tag) h3,
  .article-card:has(.series-tag) p,
  .article-card:has(.series-tag) footer{grid-row:auto}
}

/* an article should print like a document, not a screenshot */
@media print{
  #article-reader{position:static;width:auto;max-height:none;box-shadow:none;border-radius:0;background:#fff}
  .reader-shell{display:block;max-height:none;overflow:visible}
  .reader-rail,.reader-measure,.reader-move,.reader-notes-toggle,#close-reader{display:none}
  .reader-article{padding:0}
  #reader-body p{font-size:11pt;line-height:1.55}
  #reader-title{font-size:22pt}
  a[href^="http"]::after{content:" (" attr(href) ")";font-family:monospace;font-size:8pt}
}