/* Modern Mathematics Study Room — styles. Palette taken from the book cover. */
:root{
  --navy:#021226; --navy-2:#020C1D; --navy-3:#0A2340;
  --gold:#E6A23A; --gold-rule:#EC9F1A; --gold-soft:#F3C878;
  --teal:#6CC0BA;
  --bg:#F3F5F8; --surface:#FFFFFF; --surface-2:#F8F9FB; --ink:#122033; --ink-2:#2B3A4E; --muted:#56647A;
  --line:#DCE2EA; --line-2:#C9D2DE;
  --gold-ink:#8A5A0B;   /* gold for text on light: 5.9:1 */
  --teal-ink:#1D6B65;   /* teal for text on light: 6.0:1 */
  --link:#1D6B65;
  --ok:#1E7A4F; --warn:#8A5A0B; --bad:#A3372B;
  --ok-bg:#E6F4EC; --warn-bg:#FFF3DF; --bad-bg:#FBEAE8; --info-bg:#E7F3F2;
  --focus:#1D6B65;
  --shadow:0 1px 2px rgba(2,18,38,.06),0 6px 20px rgba(2,18,38,.06);
  --radius:14px; --radius-sm:9px;
  --serif:"Lora",Georgia,"Times New Roman",serif;
  --sans:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --caps:"Montserrat","Source Sans 3",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --p-teacher:#3E7C9A; --p-curriculum:#8A6D2F; --p-district:#4F7A45; --p-state:#76578A; --p-prep:#A0574B; --p-research:#4F6B8A; --p-other:#6B7280;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#06101D; --surface:#0C1A2C; --surface-2:#0F2035; --ink:#E8EDF3; --ink-2:#C9D3DF; --muted:#A3B0C0;
    --line:#1E3048; --line-2:#2A4060; --gold-ink:#EDB65C; --teal-ink:#7FD0C9; --link:#7FD0C9;
    --ok:#5CCB94; --warn:#E6B45A; --bad:#F08A7C; --ok-bg:#0F2A20; --warn-bg:#2B2210; --bad-bg:#2E1512; --info-bg:#0E2A2B; --focus:#7FD0C9;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
    --p-teacher:#7DB7D2; --p-curriculum:#D2B06A; --p-district:#8FC283; --p-state:#B99BCB; --p-prep:#E0998C; --p-research:#94AFCD; --p-other:#A3AAB6;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#06101D; --surface:#0C1A2C; --surface-2:#0F2035; --ink:#E8EDF3; --ink-2:#C9D3DF; --muted:#A3B0C0;
  --line:#1E3048; --line-2:#2A4060; --gold-ink:#EDB65C; --teal-ink:#7FD0C9; --link:#7FD0C9;
  --ok:#5CCB94; --warn:#E6B45A; --bad:#F08A7C; --ok-bg:#0F2A20; --warn-bg:#2B2210; --bad-bg:#2E1512; --info-bg:#0E2A2B; --focus:#7FD0C9;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
  --p-teacher:#7DB7D2; --p-curriculum:#D2B06A; --p-district:#8FC283; --p-state:#B99BCB; --p-prep:#E0998C; --p-research:#94AFCD; --p-other:#A3AAB6;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--sans);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--link);text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.2;margin:0 0 .5em;color:var(--ink);font-weight:700;text-wrap:balance}
h1{font-size:clamp(1.9rem,4.4vw,2.8rem)}
h2{font-size:clamp(1.4rem,3vw,1.85rem)}
h3{font-size:1.2rem}
h4{font-size:1.02rem}
p{margin:0 0 1em}
ul,ol{padding-left:1.25em;margin:0 0 1em}
li{margin:.2em 0}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:#1B1203;padding:8px 14px;border-radius:8px;z-index:100;font-weight:700}
.skip:focus{left:12px}
.eyebrow{font:700 .72rem/1.3 var(--caps);letter-spacing:.2em;text-transform:uppercase;color:var(--gold-ink)}
.on-dark .eyebrow,.eyebrow.on-dark{color:var(--gold)}
.mono{font-family:var(--mono)}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.center{text-align:center}
.nowrap{white-space:nowrap}

/* ---------- top bar */
.topbar{position:sticky;top:0;z-index:50;background:var(--navy);color:#EEF2F6;border-bottom:1px solid rgba(230,162,58,.35)}
.topbar-in{max-width:1240px;margin:0 auto;display:flex;align-items:center;gap:12px;padding:0 16px;min-height:64px}
.wordmark{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;flex:0 0 auto}
.wm-mark{width:34px;height:34px}
.wm-text{display:flex;flex-direction:column;line-height:1.05}
.wm-title{font:700 1.08rem var(--serif);letter-spacing:.01em}
.wm-sub{font:700 .6rem var(--caps);letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-top:3px}
.mainnav{margin-left:auto;display:flex;align-items:center;gap:0;flex-wrap:nowrap}
.mainnav a,.mainnav button.navlink{white-space:nowrap;color:#D9E1EA;text-decoration:none;font:600 .9rem var(--sans);padding:8px 8px;border-radius:8px;background:none;border:0;cursor:pointer}
.mainnav a:hover,.mainnav button.navlink:hover{background:rgba(255,255,255,.07);color:#fff}
.mainnav a[aria-current="page"]{color:#fff;box-shadow:inset 0 -2px 0 var(--gold)}
.mainnav .cta{background:var(--gold);color:#1B1203;margin-left:6px}
.mainnav .cta:hover{background:var(--gold-soft);color:#1B1203}
.mainnav .avatar-link{display:flex;align-items:center;gap:8px}
.avatar{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--teal);color:var(--navy);font:700 .78rem var(--caps);letter-spacing:.04em;flex:0 0 auto}
.themebtn{background:none;border:1px solid rgba(255,255,255,.18);color:#D9E1EA;border-radius:8px;width:36px;height:36px;display:grid;place-items:center;cursor:pointer;margin-left:4px}
.themebtn svg{width:18px;height:18px}
.navtoggle{display:none;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.2);border-radius:8px;width:42px;height:40px;cursor:pointer;position:relative}
.navtoggle .bars,.navtoggle .bars::before,.navtoggle .bars::after{content:"";position:absolute;left:10px;right:10px;height:2px;background:#fff;border-radius:2px}
.navtoggle .bars{top:19px}.navtoggle .bars::before{top:-6px;left:0;right:0}.navtoggle .bars::after{top:6px;left:0;right:0}
@media (max-width:1180px){
  .navtoggle{display:block}
  .mainnav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--navy-2);flex-direction:column;align-items:stretch;padding:8px 12px 14px;border-bottom:1px solid rgba(230,162,58,.35);max-height:calc(100vh - 64px);overflow:auto}
  .mainnav.open{display:flex}
  .mainnav a,.mainnav button.navlink{padding:12px 10px;font-size:1rem}
  .mainnav .cta{margin:6px 0 0;text-align:center}
  .themebtn{margin:8px 0 0}
}
.banner{background:var(--warn-bg);color:var(--ink);padding:10px 16px;text-align:center;font-size:.95rem;border-bottom:1px solid var(--line)}

/* ---------- layout */
main{display:block;min-height:70vh;outline:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}
.narrow{max-width:820px;margin:0 auto;padding:0 16px}
.section{padding:44px 0}
.page{max-width:1240px;margin:0 auto;padding:28px 16px 64px;display:grid;grid-template-columns:150px minmax(0,1fr);gap:28px}
.page.wide-side{grid-template-columns:150px minmax(0,1fr) 300px}
.rail{position:relative}
.rail-code{position:sticky;top:92px;font:500 .7rem/1.5 var(--mono);letter-spacing:.08em;color:var(--muted);text-transform:uppercase;writing-mode:horizontal-tb;border-left:2px solid var(--gold);padding:4px 0 4px 10px}
.rail-code b{display:block;color:var(--gold-ink);font-weight:600;font-size:.95rem;letter-spacing:.04em}
.content{min-width:0}
.side{min-width:0}
.side-in{position:sticky;top:88px;display:flex;flex-direction:column;gap:14px}
@media (max-width:1100px){.page.wide-side{grid-template-columns:130px minmax(0,1fr)}.page.wide-side .side{grid-column:2}.side-in{position:static}}
@media (max-width:760px){
  .page,.page.wide-side{grid-template-columns:minmax(0,1fr);gap:16px;padding-top:18px}
  .page.wide-side .side{grid-column:1}
  .rail-code{position:static;display:inline-block}
  .rail-code b{display:inline;margin-right:6px}
}
.pagehead{margin-bottom:22px}
.pagehead .lede{font-size:1.1rem;color:var(--ink-2);max-width:62ch}
.deck{font:italic 500 1.2rem/1.45 var(--serif);color:var(--ink-2);margin:-.2em 0 .8em}

/* ---------- cards / surfaces */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card.flat{box-shadow:none}
.card h3:first-child,.card h2:first-child,.card h4:first-child{margin-top:0}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}}
.stack>*+*{margin-top:14px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.divider{height:22px;margin:30px 0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='22' viewBox='0 0 220 22'%3E%3Cg fill='none' stroke='%23E6A23A' stroke-opacity='.55' stroke-width='1'%3E%3Cpath d='M0 11H86M134 11H220'/%3E%3Cpath d='M96 15 110 6 124 15'/%3E%3C/g%3E%3Ccircle cx='96' cy='15' r='3' fill='%23E6A23A'/%3E%3Ccircle cx='110' cy='6' r='3.4' fill='%23F3C878'/%3E%3Ccircle cx='124' cy='15' r='3' fill='%236CC0BA'/%3E%3C/svg%3E") center/220px 22px no-repeat}

/* ---------- buttons & forms */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 .86rem/1 var(--caps);letter-spacing:.04em;padding:12px 16px;border-radius:10px;border:1px solid transparent;cursor:pointer;text-decoration:none;min-height:44px;background:var(--surface);color:var(--ink);border-color:var(--line-2)}
.btn:hover{border-color:var(--teal-ink)}
.btn.primary{background:var(--gold);color:#1B1203;border-color:var(--gold)}
.btn.primary:hover{background:var(--gold-soft);border-color:var(--gold-soft)}
.btn.dark{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn.ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold-soft)}
.btn.danger{color:var(--bad);border-color:currentColor;background:transparent}
.btn.small{min-height:34px;padding:8px 11px;font-size:.76rem}
.btn.link{background:none;border:0;color:var(--link);padding:4px 2px;min-height:0;font:600 .95rem var(--sans);letter-spacing:0;text-decoration:underline}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn.done{background:var(--ok-bg);color:var(--ok);border-color:var(--ok)}
label,.label{display:block;font-weight:600;margin:0 0 6px;color:var(--ink)}
.req{color:var(--bad);margin-left:2px}
.hint{display:block;color:var(--muted);font-size:.88rem;margin-top:5px;font-weight:400}
input[type=text],input[type=email],input[type=password],input[type=tel],input[type=search],input[type=number],input[type=date],select,textarea{
  width:100%;font:400 1rem/1.4 var(--sans);color:var(--ink);background:var(--surface-2);border:1px solid var(--line-2);border-radius:10px;padding:11px 12px;min-height:44px}
textarea{min-height:110px;resize:vertical;line-height:1.55}
input:focus,select:focus,textarea:focus{outline:3px solid color-mix(in srgb,var(--focus) 45%,transparent);outline-offset:1px;border-color:var(--focus)}
.field{margin-bottom:16px}
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}
.fields.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:640px){.fields,.fields.three{grid-template-columns:minmax(0,1fr)}}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;cursor:pointer}
.check input{margin-top:4px;width:18px;height:18px;flex:0 0 auto;accent-color:var(--teal-ink)}
fieldset{border:0;margin:0 0 16px;padding:0;min-width:0}
legend{font-weight:600;margin-bottom:8px;padding:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip-toggle{position:relative}
.chip-toggle input{position:absolute;opacity:0;width:1px;height:1px}
.chip-toggle span{display:inline-flex;align-items:center;min-height:38px;padding:7px 13px;border:1px solid var(--line-2);border-radius:99px;background:var(--surface-2);cursor:pointer;font-weight:600;font-size:.92rem;user-select:none}
.chip-toggle input:checked+span{background:var(--navy);color:#fff;border-color:var(--navy)}
:root[data-theme="dark"] .chip-toggle input:checked+span{background:var(--teal);color:var(--navy);border-color:var(--teal)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .chip-toggle input:checked+span{background:var(--teal);color:var(--navy);border-color:var(--teal)}}
.chip-toggle input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}
.shortcuts{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.shortcuts button{font:600 .78rem var(--mono);background:none;border:1px dashed var(--line-2);color:var(--ink-2);border-radius:8px;padding:5px 9px;cursor:pointer}
.formsec{border-top:1px solid var(--line);padding-top:22px;margin-top:22px}
.formsec h2{display:flex;align-items:center;gap:12px;font-size:1.2rem}
.formsec h2 .num{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--navy);color:var(--gold);font:700 .85rem var(--caps)}
.pathcards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
@media (max-width:760px){.pathcards{grid-template-columns:minmax(0,1fr)}}
.pathcard{position:relative;display:block;cursor:pointer}
.pathcard input{position:absolute;opacity:0}
.pathcard .pc{display:block;height:100%;border:1px solid var(--line-2);border-left:5px solid var(--pc);border-radius:10px;padding:12px 12px 12px 14px;background:var(--surface-2)}
.pathcard .pc b{display:block;font-family:var(--serif);font-size:1.02rem}
.pathcard .pc small{display:block;color:var(--muted);font-weight:400;line-height:1.45;margin-top:4px}
.pathcard input:checked+.pc{border-color:var(--pc);box-shadow:0 0 0 2px var(--pc);background:var(--surface)}
.pathcard input:focus-visible+.pc{outline:3px solid var(--focus);outline-offset:2px}
.errbox{background:var(--bad-bg);color:var(--ink);border:1px solid var(--bad);border-radius:10px;padding:12px 14px;margin:0 0 16px}
.errbox strong{color:var(--bad)}
.okbox{background:var(--ok-bg);border:1px solid var(--ok);border-radius:10px;padding:12px 14px;margin:0 0 16px}
.infobox{background:var(--info-bg);border:1px solid color-mix(in srgb,var(--teal-ink) 40%,transparent);border-radius:10px;padding:12px 14px}
.warnbox{background:var(--warn-bg);border:1px solid color-mix(in srgb,var(--warn) 45%,transparent);border-radius:10px;padding:12px 14px}

/* ---------- pathway chips */
.pchip{display:inline-flex;align-items:center;gap:6px;font:600 .74rem/1 var(--sans);padding:5px 9px;border-radius:99px;color:var(--pc);background:color-mix(in srgb,var(--pc) 13%,transparent);border:1px solid color-mix(in srgb,var(--pc) 40%,transparent);white-space:nowrap}
.pchip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--pc)}
.tag{display:inline-block;font:700 .64rem/1 var(--caps);letter-spacing:.14em;text-transform:uppercase;padding:5px 8px;border-radius:6px;background:var(--gold);color:#1B1203}
.tag.teal{background:var(--teal);color:var(--navy)}
.tag.ok{background:var(--ok-bg);color:var(--ok);border:1px solid var(--ok)}
.tag.muted{background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.tag.bad{background:var(--bad-bg);color:var(--bad);border:1px solid var(--bad)}

/* ---------- hero */
.hero{position:relative;background:var(--navy) url("img/hero.jpg") 70% center/cover no-repeat;color:#EEF2F6;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,12,29,.96) 0%,rgba(2,12,29,.82) 45%,rgba(2,12,29,.35) 100%)}
.hero-in{position:relative;max-width:1240px;margin:0 auto;padding:64px 16px 72px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:40px;align-items:center}
.hero h1{color:#fff;font-size:clamp(2.1rem,5.4vw,3.6rem);letter-spacing:-.01em;margin:.35em 0 .3em}
.hero .sub{font:italic 500 clamp(1.1rem,2.2vw,1.35rem)/1.45 var(--serif);color:#DCE3EB;max-width:40ch}
.hero .rule{width:88px;height:3px;background:var(--gold-rule);margin:22px 0}
.hero .thesis{font-size:1.08rem;color:#C9D3DF;max-width:56ch}
.hero .thesis strong{color:#fff}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.hero-cover{justify-self:center;max-width:300px;width:100%;border-radius:4px;box-shadow:0 30px 60px rgba(0,0,0,.55),0 0 0 1px rgba(230,162,58,.3);transform:rotate(1.5deg)}
@media (max-width:860px){.hero-in{grid-template-columns:minmax(0,1fr);padding:40px 16px 48px}.hero-cover{max-width:200px;justify-self:start;transform:none}}
.welcome{background:var(--navy-3);color:#E8EDF3;border-bottom:1px solid rgba(230,162,58,.3)}
.welcome .wrap{display:flex;gap:14px;align-items:center;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}
.welcome a{color:var(--gold-soft);font-weight:700}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.steps{grid-template-columns:minmax(0,1fr)}}
.step{position:relative;padding:22px 18px 18px;border-top:3px solid var(--gold);background:var(--surface);border-radius:0 0 var(--radius) var(--radius);box-shadow:var(--shadow)}
.step .n{font:600 .8rem var(--mono);color:var(--gold-ink);letter-spacing:.08em}
.step h3{margin:.3em 0 .35em;font-size:1.12rem}
.step p{margin:0;color:var(--ink-2);font-size:.97rem}
.feature{display:flex;gap:14px}
.feature .ic{flex:0 0 44px;height:44px;border-radius:12px;background:var(--navy);display:grid;place-items:center}
.feature .ic svg{width:24px;height:24px}
.feature h3{margin:0 0 .2em;font-size:1.08rem}
.feature p{margin:0;color:var(--ink-2);font-size:.97rem}
.partblock{margin-bottom:26px}
.partblock h3{display:flex;gap:10px;align-items:baseline;font-size:1.1rem}
.partblock h3 .mono{font-size:.75rem;color:var(--gold-ink);letter-spacing:.1em}
.toc{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.toc li{margin:0;border-bottom:1px solid var(--line)}
.toc a{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:10px;padding:10px 4px;text-decoration:none;color:var(--ink);align-items:baseline}
.toc a:hover{background:var(--surface-2)}
.toc .num{font:600 .85rem var(--mono);color:var(--gold-ink)}
.toc .t{font-family:var(--serif);font-weight:600}
.about{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;align-items:start}
.about img{border-radius:var(--radius);box-shadow:var(--shadow)}
@media (max-width:700px){.about{grid-template-columns:minmax(0,1fr)}.about img{max-width:200px}}
.band-dark{background:var(--navy-2);color:#E8EDF3}
.band-dark h2,.band-dark h3{color:#fff}
.band-dark .muted{color:#A9B6C6}
.band-dark .eyebrow{color:var(--gold)}

/* ---------- unit cards */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 22px}
.filters button{font:600 .88rem var(--sans);padding:8px 13px;border-radius:99px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;min-height:38px}
.filters button[aria-pressed="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
.ucard{display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink);position:relative;transition:transform .15s,border-color .15s}
.ucard:hover{transform:translateY(-2px);border-color:var(--teal-ink)}
.ucard .code{font:600 .72rem var(--mono);letter-spacing:.1em;color:var(--gold-ink)}
.ucard h3{font-size:1.1rem;margin:0}
.ucard .sum{font-size:.95rem;color:var(--ink-2);margin:0}
.ucard .chips{margin-top:auto;padding-top:6px}
.ucard .flags{position:absolute;top:14px;right:14px;display:flex;gap:6px}
.ucard.is-done{border-color:color-mix(in srgb,var(--ok) 55%,var(--line))}

/* ---------- chapter page */
.vignette{border-left:3px solid var(--teal-ink);padding:6px 0 6px 18px;margin:18px 0 22px;font:italic 400 1.08rem/1.6 var(--serif);color:var(--ink-2)}
.vignette .eyebrow{font-style:normal;display:block;margin-bottom:4px;color:var(--teal-ink)}
.pullquote{margin:26px 0;padding:24px 26px;background:var(--navy);color:#F3F0E8;border-radius:var(--radius);position:relative;font:italic 500 clamp(1.15rem,2.4vw,1.4rem)/1.5 var(--serif)}
.pullquote::before{content:"“";position:absolute;left:14px;top:-6px;font:700 4rem/1 var(--serif);color:var(--gold)}
.pullquote cite{display:block;margin-top:10px;font:700 .7rem var(--caps);letter-spacing:.18em;color:var(--gold);font-style:normal;text-transform:uppercase}
.sec{margin:34px 0}
.sec>h2{font-size:1.35rem;display:flex;align-items:baseline;gap:12px}
.sec>h2 .mono{font-size:.72rem;color:var(--gold-ink);letter-spacing:.1em;font-weight:500}
.keyideas{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.keyideas li{margin:0;padding:12px 14px 12px 40px;position:relative;background:var(--surface);border:1px solid var(--line);border-radius:10px}
.keyideas li::before{content:"◆";position:absolute;left:14px;top:12px;color:var(--gold-ink)}
table{border-collapse:collapse;width:100%}
.tbl{width:100%;font-size:.95rem;background:var(--surface);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.tbl th,.tbl td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--line)}
.tbl th{font:700 .72rem var(--caps);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);background:var(--surface-2)}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{font-weight:600}
.tablewrap{overflow-x:auto;border-radius:10px}
.callout{border-radius:var(--radius);padding:18px 20px;border:1px solid var(--line);background:var(--surface)}
.callout h3{font-size:1.08rem;margin-bottom:.4em;display:flex;gap:10px;align-items:center}
.callout.ai{border-left:5px solid var(--teal-ink)}
.callout.corr{border-left:5px solid var(--gold)}
.callout.research{border-left:5px solid var(--p-research);background:var(--surface-2)}
.callout p:last-child{margin:0}
.qlist{list-style:none;padding:0;margin:0;counter-reset:q}
.qlist li{counter-increment:q;position:relative;padding:12px 14px 12px 50px;border:1px solid var(--line);border-radius:10px;margin:0 0 10px;background:var(--surface)}
.qlist li::before{content:counter(q,decimal-leading-zero);position:absolute;left:14px;top:13px;font:600 .82rem var(--mono);color:var(--gold-ink)}
.qlist li.mine{border-color:var(--pc,var(--teal-ink));box-shadow:0 0 0 1px var(--pc,var(--teal-ink))}
.qlist .pchip{margin-top:6px}
.journal-entry{margin-bottom:18px}
.journal-entry .spread{margin-top:6px}
.savestate{font:500 .78rem var(--mono);color:var(--muted)}
.tryit{background:linear-gradient(135deg,color-mix(in srgb,var(--teal) 16%,var(--surface)),var(--surface));border:1px solid color-mix(in srgb,var(--teal-ink) 35%,var(--line))}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:40px}
.pager a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--ink);background:var(--surface)}
.pager a:hover{border-color:var(--teal-ink)}
.pager .next{text-align:right}
.pager small{display:block;font:600 .7rem var(--mono);letter-spacing:.1em;color:var(--gold-ink);text-transform:uppercase}
.side .card{padding:16px}
.side h3{font-size:1rem;margin-bottom:.5em}

/* ---------- instruments */
.scale-legend{display:flex;flex-wrap:wrap;gap:6px}
.item{padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:12px}
.item .area{font:600 .7rem var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--gold-ink)}
.item .text{font-weight:600;margin:4px 0 10px}
.item .meta{font-size:.9rem;color:var(--muted);margin:-4px 0 10px}
.opts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
@media (max-width:640px){.opts{grid-template-columns:repeat(2,minmax(0,1fr))}}
.opt{position:relative;display:block;cursor:pointer;margin:0}
.opt input{position:absolute;opacity:0}
.opt span{display:block;height:100%;padding:9px 10px;border:1px solid var(--line-2);border-radius:9px;background:var(--surface-2);font-size:.86rem;font-weight:400;line-height:1.35}
.opt span b{display:block;font:600 .74rem var(--caps);letter-spacing:.05em;margin-bottom:3px}
.opt input:checked+span{background:var(--navy);color:#fff;border-color:var(--navy)}
.opt input:checked+span b{color:var(--gold)}
.opt input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}
.scorebox{position:sticky;top:78px;z-index:5;display:flex;gap:16px;align-items:center;flex-wrap:wrap;background:var(--navy);color:#fff;border-radius:var(--radius);padding:14px 18px;margin:0 0 18px;box-shadow:var(--shadow)}
.scorebox .avg{font:700 2rem/1 var(--serif);color:var(--gold)}
.scorebox .lvl{font:700 .78rem var(--caps);letter-spacing:.12em;text-transform:uppercase}
.scorebox .interp{flex:1 1 260px;font-size:.95rem;color:#D3DCE6}
.scorebox .btn{margin-left:auto}
.chart{width:100%;height:auto;display:block}
.chart text{font:500 11px var(--mono);fill:var(--muted)}
.bar-row{display:grid;grid-template-columns:minmax(120px,210px) minmax(0,1fr) 48px;gap:10px;align-items:center;margin:6px 0;font-size:.92rem}
.bar{height:12px;border-radius:6px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--teal-ink),var(--gold))}
.framing{font-size:.93rem}

/* ---------- frameworks table → cards on phones */
.fwtable{font-size:.88rem}
.fwtable td{min-width:120px}
.fwtable td:first-child{min-width:170px}
@media (max-width:860px){
  .fwtable,.fwtable tbody,.fwtable tr,.fwtable td{display:block;width:100%}
  .fwtable thead{display:none}
  .fwtable tr{border:1px solid var(--line);border-radius:12px;margin:0 0 14px;background:var(--surface);padding:6px 0}
  .fwtable td{border:0;border-bottom:1px dashed var(--line);padding:8px 14px;min-width:0}
  .fwtable td:last-child{border-bottom:0}
  .fwtable td::before{content:attr(data-label);display:block;font:700 .66rem var(--caps);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}
  .fwtable td:first-child{font-family:var(--serif);font-size:1.02rem}
  .fwtable.tbl{border:0;background:none}
}
.blocks h4{margin:1.2em 0 .4em}
.blocks ul{margin-top:0}
.blocks .checkline{display:flex;gap:8px;align-items:center;margin:2px 0}
.blocks .checkline::before{content:"";width:14px;height:14px;border:1.5px solid var(--muted);border-radius:3px;flex:0 0 auto}
.courses-grid a{display:block;text-decoration:none;color:var(--ink)}
.courses-grid a.mine{border-color:var(--gold);box-shadow:0 0 0 2px color-mix(in srgb,var(--gold) 50%,transparent)}

/* ---------- lexicon */
.lex{list-style:none;padding:0;margin:0}
.lex li{padding:12px 0;border-bottom:1px solid var(--line);margin:0}
.lex dt{font:600 1.05rem var(--serif)}
.lex .src{font:500 .72rem var(--mono);color:var(--gold-ink);letter-spacing:.06em;margin-left:8px}
mark{background:color-mix(in srgb,var(--gold) 35%,transparent);color:inherit;border-radius:3px;padding:0 1px}

/* ---------- board */
.post{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:var(--surface);margin-bottom:12px}
.post.pinned{border-color:var(--gold);box-shadow:inset 4px 0 0 var(--gold)}
.post.hidden-post{opacity:.72;border-style:dashed}
.post .by{font-weight:700}
.post .when{font:500 .76rem var(--mono);color:var(--muted)}
.post .prompt{font:italic .92rem var(--serif);color:var(--muted);margin:6px 0}
.post .body{white-space:pre-wrap;margin:8px 0}
.replies{margin:10px 0 0 18px;border-left:2px solid var(--line);padding-left:14px}
.replies .post{box-shadow:none;background:var(--surface-2)}
.post-actions{display:flex;gap:4px;flex-wrap:wrap}

/* ---------- roster */
.roster td,.roster th{font-size:.88rem;white-space:nowrap}
.roster td.wrapcell{white-space:normal;min-width:160px}
.minibar{display:inline-block;width:80px;height:8px;border-radius:4px;background:var(--surface-2);border:1px solid var(--line);vertical-align:middle;overflow:hidden;margin-right:6px}
.minibar i{display:block;height:100%;background:var(--teal-ink)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:22px;overflow-x:auto}
.tabs button{font:700 .8rem var(--caps);letter-spacing:.06em;padding:12px 14px;background:none;border:0;border-bottom:3px solid transparent;color:var(--muted);cursor:pointer;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--gold)}
.groupcard{margin-bottom:22px}
.code-pill{font:600 1.2rem var(--mono);letter-spacing:.18em;background:var(--navy);color:var(--gold);padding:6px 12px;border-radius:8px}
.confirm{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap;background:var(--bad-bg);border:1px solid var(--bad);padding:6px 8px;border-radius:10px;font-size:.9rem}
.agenda td:first-child{font-family:var(--mono);white-space:nowrap}

/* ---------- profile */
.idcard{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:center;background:var(--navy);color:#E8EDF3;border-radius:var(--radius);padding:22px;position:relative;overflow:hidden}
.idcard::after{content:"";position:absolute;inset:auto -40px -60px auto;width:260px;height:200px;background:url("img/hero.jpg") right bottom/cover;opacity:.35;border-radius:50%;filter:blur(1px)}
.idcard .avatar{width:72px;height:72px;font-size:1.4rem}
.idcard h2{color:#fff;margin:0}
.idcard dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 14px;margin:10px 0 0;font-size:.93rem;position:relative;z-index:1}
.idcard dt{color:#9FB0C3}.idcard dd{margin:0;overflow-wrap:anywhere}
@media (max-width:560px){.idcard{grid-template-columns:minmax(0,1fr)}.idcard dl{grid-template-columns:minmax(0,1fr)}.idcard dd{margin-bottom:6px}}
.ring{width:130px;height:130px}
.ring text{font:700 22px var(--serif);fill:var(--ink)}
.stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
@media (max-width:700px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stat{padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.stat b{display:block;font:700 1.6rem/1 var(--serif);color:var(--ink)}
.stat span{font-size:.82rem;color:var(--muted)}
.checklist{list-style:none;padding:0;margin:0;columns:2;column-gap:24px}
@media (max-width:640px){.checklist{columns:1}}
.checklist li{break-inside:avoid;display:flex;gap:8px;align-items:baseline;margin:4px 0}
.checklist .box{width:16px;height:16px;border:1.5px solid var(--line-2);border-radius:4px;flex:0 0 auto;display:grid;place-items:center;font-size:.7rem;transform:translateY(2px)}
.checklist .box.on{background:var(--ok);border-color:var(--ok);color:#fff}

/* ---------- toasts */
.toasts{position:fixed;right:16px;bottom:16px;z-index:80;display:flex;flex-direction:column;gap:8px;max-width:min(380px,calc(100vw - 32px))}
.toast{background:var(--navy);color:#fff;padding:12px 16px;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.3);border-left:4px solid var(--teal);font-size:.95rem;animation:tin .2s ease-out}
.toast.err{border-left-color:#F08A7C}
.toast.gold{border-left-color:var(--gold)}
@keyframes tin{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- footer */
.footer{background:var(--navy-2);color:#A9B6C6;padding:36px 16px 44px;margin-top:40px;font-size:.92rem}
.footer .wrap{display:flex;gap:24px;justify-content:space-between;flex-wrap:wrap;align-items:flex-start}
.footer a{color:#CFE9E6}
.footer .fmark{display:flex;gap:14px;align-items:center}
.footer .fmark img{width:54px;border-radius:2px}
.footer .pub{background:#fff;border-radius:8px;padding:6px 10px;width:170px}

/* ---------- print */
@media print{
  .topbar,.footer,.toasts,.banner,.side,.rail,.noprint,.pager,.filters,.tabs,.scorebox .btn{display:none!important}
  body{background:#fff;color:#000;font-size:11.5pt}
  .page,.page.wide-side{display:block;padding:0}
  .card,.item,.callout,.tbl{box-shadow:none;break-inside:avoid}
  .pullquote{background:none;color:#000;border:1px solid #999}
  body.print-one main .printable:not(.print-target){display:none!important}
  body.print-one main .page>.content>*:not(.printable){display:none!important}
  a{color:#000;text-decoration:none}
  .opt input:checked+span{background:#ddd;color:#000}
  .fwtable,.fwtable tbody,.fwtable tr,.fwtable td{display:revert}
  .fwtable thead{display:table-header-group}
  .fwtable td::before{display:none}
}
.content,.blocks p,.card{overflow-wrap:anywhere}
.reghead{position:relative;background:var(--navy) url("img/hero.jpg") right center/cover;padding:26px 24px;color:#fff}
.reghead::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,12,29,.95) 0%,rgba(2,12,29,.85) 60%,rgba(2,12,29,.5) 100%)}
.reghead>*{position:relative}
.progwrap{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:22px}
@media (max-width:640px){.progwrap{grid-template-columns:minmax(0,1fr)}.progwrap .ring{margin:0 auto}}
/* heading label (e.g. "APP. B", "01") separated from its title */
h2 .hlabel,h3 .hlabel{display:inline-block;margin-right:.6em;font:600 .72rem/1 var(--mono);letter-spacing:.1em;color:var(--gold-ink);vertical-align:.2em;white-space:nowrap}
.spread>h2{flex:1 1 auto;min-width:0}