/* Builder's Bastion — design system v2. Light + dark themes, glass surfaces, aurora + grain textures. */
:root{
  --bg:#F5F6F2;--bg2:#ECEFEA;--ink:#0B1F20;--body:#32474A;--muted:#667b7e;
  --card:rgba(255,255,255,.72);--card-solid:#fff;--line:rgba(11,31,32,.10);--line2:rgba(11,31,32,.16);
  --acc:#0E7C73;--acc2:#16A89D;--acc-deep:#0A5A54;--acc-soft:rgba(14,124,115,.10);--acc-chip:#D5EEEA;
  --amber:#E9A52F;--amber-soft:rgba(233,165,47,.14);--risk:#D9772E;--risk-soft:rgba(217,119,46,.12);--violet:#6C5CE7;
  --shadow:0 1px 2px rgba(11,31,32,.05),0 12px 32px -12px rgba(11,31,32,.16);
  --shadow-lg:0 2px 4px rgba(11,31,32,.05),0 30px 60px -24px rgba(11,31,32,.28);
  --hero-a:rgba(22,168,157,.30);--hero-b:rgba(233,165,47,.22);--hero-c:rgba(108,92,231,.16);
  --glass:rgba(245,246,242,.72);
  --display:'Bricolage Grotesque',system-ui,sans-serif;--sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;--serif:'Instrument Serif',Georgia,serif;
  --r:20px;--max:1160px;color-scheme:light;
}
[data-theme=dark]{
  --bg:#061414;--bg2:#0A1D1D;--ink:#EEF7F6;--body:#B4C9C9;--muted:#7C9899;
  --card:rgba(255,255,255,.045);--card-solid:#0C2021;--line:rgba(255,255,255,.09);--line2:rgba(255,255,255,.16);
  --acc:#2CC4B6;--acc2:#5EE0D2;--acc-deep:#8FEAE0;--acc-soft:rgba(44,196,182,.12);--acc-chip:rgba(44,196,182,.18);
  --amber:#F2B24C;--amber-soft:rgba(242,178,76,.14);--risk:#F09A5A;--risk-soft:rgba(240,154,90,.14);--violet:#8C7DFF;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset,0 16px 40px -16px rgba(0,0,0,.6);
  --shadow-lg:0 1px 0 rgba(255,255,255,.05) inset,0 40px 80px -30px rgba(0,0,0,.7);
  --hero-a:rgba(44,196,182,.26);--hero-b:rgba(242,178,76,.14);--hero-c:rgba(140,125,255,.20);
  --glass:rgba(6,20,20,.68);color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--body);font:400 17px/1.7 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .3s,color .3s}
.js body{animation:pagein .55s ease both}
@keyframes pagein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
img,svg{max-width:100%}
a{color:var(--acc);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--acc2)}
:focus-visible{outline:2px solid var(--acc2);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);line-height:1.12;letter-spacing:-.02em;margin:0}
em{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:0}
h1 em,h2 em{background:linear-gradient(100deg,var(--acc2),var(--amber));-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:.06em}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--acc);color:#fff;padding:10px 16px;border-radius:10px;z-index:99}
.skip:focus{left:12px}
.no-print{}
#sbar{position:fixed;left:0;top:0;height:3px;width:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--acc2),var(--amber));z-index:80;pointer-events:none}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--glass);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.brand-mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,var(--acc2),var(--acc-deep));display:grid;place-items:center;box-shadow:0 6px 16px -6px var(--acc),inset 0 1px 0 rgba(255,255,255,.35)}
.brand-name{font:700 19px var(--display);letter-spacing:-.02em}
.nav{display:flex;align-items:center;gap:6px}
.nav a{color:var(--body);text-decoration:none;font-weight:500;font-size:15px;padding:8px 14px;border-radius:999px;transition:.2s}
.nav a:hover,.nav a[aria-current]{background:var(--acc-soft);color:var(--ink)}
.nav a[data-account-link]{border:1px solid var(--line2);margin-left:4px}
.tbtn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line2);background:transparent;color:var(--ink);display:grid;place-items:center;cursor:pointer;transition:.2s;margin-left:4px}
.tbtn:hover{background:var(--acc-soft)}
.tbtn .i-sun{display:none}[data-theme=dark] .tbtn .i-sun{display:block}[data-theme=dark] .tbtn .i-moon{display:none}
.menu-btn{display:none}
@media(max-width:760px){
 .menu-btn{display:grid}
 .nav{position:absolute;left:0;right:0;top:68px;flex-direction:column;align-items:stretch;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 24px 20px;gap:2px;display:none}
 .nav.open{display:flex}
 .nav a{padding:12px 14px}.nav a[data-account-link]{margin:6px 0 0;text-align:center}
 .nav .tbtn{width:auto;border-radius:12px;height:44px;justify-content:flex-start;padding:0 14px;margin:6px 0 0}
}

/* ---------- hero ---------- */
.topwrap{position:relative;isolation:isolate;overflow:hidden;border-bottom:1px solid var(--line)}
.topwrap::before{content:"";position:absolute;inset:-20% -10% auto -10%;height:140%;z-index:-2;
 background:radial-gradient(40% 50% at 18% 30%,var(--hero-a),transparent 70%),radial-gradient(34% 44% at 82% 22%,var(--hero-b),transparent 70%),radial-gradient(40% 50% at 62% 90%,var(--hero-c),transparent 70%);
 filter:blur(30px);animation:aurora 22s ease-in-out infinite alternate}
@keyframes aurora{0%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(3%,2%,0) scale(1.08)}100%{transform:translate3d(-3%,-2%,0) scale(1.03)}}
.topwrap::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
 background-image:radial-gradient(var(--line2) 1px,transparent 1.2px),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .5 0 0 0 0 .5 0 0 0 0 .5 0 0 0 .55 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='.5'/></svg>");
 background-size:28px 28px,160px 160px;-webkit-mask-image:linear-gradient(#000 40%,transparent 100%);mask-image:linear-gradient(#000 40%,transparent 100%);opacity:.55}
.band{padding:56px 24px 64px}
.hero{padding-top:64px;padding-bottom:80px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero h1,.band h1{font-size:clamp(38px,6vw,68px);font-weight:700;letter-spacing:-.035em;max-width:16ch}
.band h1{max-width:20ch;font-size:clamp(34px,5vw,56px)}
.lead{font-size:clamp(18px,2vw,21px);color:var(--body);max-width:60ch;margin-top:18px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:7px 14px 7px 11px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-size:14px;font-weight:500;color:var(--body);backdrop-filter:blur(8px)}
.chip svg{color:var(--acc)}
.pill{display:inline-flex;align-items:center;gap:9px;padding:6px 14px;border-radius:999px;background:var(--acc-soft);border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--acc-deep);letter-spacing:.01em}
.ping{position:relative;width:8px;height:8px}.ping i{position:absolute;inset:0;border-radius:50%;background:var(--acc2)}.ping i+i{animation:ping 2s ease-out infinite;opacity:.6}
@keyframes ping{to{transform:scale(3);opacity:0}}
.rise{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}.rise:nth-child(2){animation-delay:.08s}.rise:nth-child(3){animation-delay:.16s}.rise:nth-child(4){animation-delay:.24s}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto;overflow:visible;--px:0;--py:0}
.hero-art .l1{transform:translate(calc(var(--px)*-.4px),calc(var(--py)*-.4px));transition:transform .4s ease-out}
.hero-art .l2{transform:translate(calc(var(--px)*.5px),calc(var(--py)*.5px));transition:transform .4s ease-out}
.hero-art .l3{transform:translate(calc(var(--px)*1.1px),calc(var(--py)*1.1px));transition:transform .4s ease-out}
.hs-top{fill:var(--acc2)}.hs-left{fill:var(--acc-deep)}.hs-right{fill:var(--acc)}
.hs-inset{fill:rgba(255,255,255,.14)}
.gl{fill:#F7C66A}.gr{fill:#E39B2E}.gt{fill:#FFE3A6}
.float1{animation:fl 6s ease-in-out infinite}.float2{animation:fl 7s ease-in-out -2s infinite}.float3{animation:fl 8s ease-in-out -4s infinite}
@keyframes fl{50%{transform:translateY(-12px)}}
.ring{transform-origin:280px 350px;animation:rg 5s ease-out infinite;opacity:0}
@keyframes rg{0%{transform:scale(.5);opacity:.7}100%{transform:scale(1.25);opacity:0}}
.tw{animation:tw 3s ease-in-out infinite}@keyframes tw{50%{opacity:.2}}
.ember{animation:em 9s linear infinite}@keyframes em{0%{transform:translateY(0);opacity:0}15%{opacity:1}100%{transform:translateY(-200px);opacity:0}}
.gem-glow{animation:gp 3s ease-in-out infinite}@keyframes gp{50%{opacity:.5}}
.flow{stroke-dasharray:4 4;animation:fw 1.2s linear infinite}@keyframes fw{to{stroke-dashoffset:-16}}
.hero-art text{fill:var(--body)}

/* lesson hero */
.lh-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.lh-art svg{width:100%;height:auto;max-height:360px;display:block;overflow:visible}
.lnum{font:700 clamp(80px,12vw,140px)/.8 var(--display);letter-spacing:-.06em;color:transparent;-webkit-text-stroke:1.5px var(--line2);position:absolute;right:24px;top:20px;pointer-events:none;user-select:none}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}

/* ---------- buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;font:600 16px/1 var(--sans);padding:15px 24px;border-radius:14px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .2s,box-shadow .2s,background .2s;overflow:hidden}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--acc2),var(--acc) 55%,var(--acc-deep));box-shadow:0 10px 24px -10px var(--acc),inset 0 1px 0 rgba(255,255,255,.35)}
[data-theme=dark] .btn-primary{color:#03201E}
.btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.4) 50%,transparent 65%);transform:translateX(-120%);transition:transform .7s}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 16px 30px -10px var(--acc)}
[data-theme=dark] .btn-primary:hover{color:#03201E}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-outline{background:var(--card);border-color:var(--line2);color:var(--ink);backdrop-filter:blur(8px)}
.btn-outline:hover{border-color:var(--acc);color:var(--ink);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line2)}
.btn-ghost:hover{background:var(--acc-soft);color:var(--ink)}
.btn-sm{padding:11px 17px;font-size:14.5px;border-radius:12px}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}
.btn.danger{color:var(--risk);border-color:var(--risk)}
.linklike{background:none;border:0;padding:0;font:inherit;color:var(--acc);text-decoration:underline;cursor:pointer}

/* ---------- sections + cards ---------- */
.section{max-width:var(--max);margin:0 auto;padding:84px 24px 0}
.section:last-of-type{padding-bottom:84px}
.eyebrow{display:inline-block;font:700 12.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--acc);margin-bottom:12px}
.section h2,.h2{font-size:clamp(30px,4vw,46px);font-weight:700;letter-spacing:-.03em;max-width:22ch}
.section-lead{font-size:19px;max-width:66ch;margin-top:16px}
.grid{display:grid;gap:20px;margin-top:36px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;box-shadow:var(--shadow);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:transform .3s,box-shadow .3s,border-color .3s}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(320px circle at var(--mx,50%) var(--my,0%),var(--acc-soft),transparent 60%);opacity:0;transition:opacity .3s;pointer-events:none}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:radial-gradient(220px circle at var(--mx,50%) var(--my,0%),var(--acc2),transparent 65%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s;pointer-events:none}
.card:hover::before,.card:hover::after{opacity:1}
a.card{text-decoration:none;color:inherit;display:block}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.card h3{font-size:22px;margin:16px 0 8px}.card p{margin:0}
.card > :last-child{margin-bottom:0}
.icon-tile{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;color:var(--acc-deep);background:linear-gradient(145deg,var(--acc-soft),transparent),var(--card-solid);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
[data-theme=dark] .icon-tile{color:var(--acc2)}
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-top:36px}
.bento .b2{grid-column:span 2}.bento .b3{grid-column:span 3}.bento .b4{grid-column:span 4}
.bento .card{display:flex;flex-direction:column;justify-content:space-between;min-height:210px}
.bento .big{font:700 clamp(40px,5vw,64px)/1 var(--display);letter-spacing:-.04em;color:var(--ink)}
.bento .big small{font-size:.4em;color:var(--muted);letter-spacing:0;margin-left:4px}
.key{display:flex;flex-direction:column;gap:6px}
.marq{overflow:hidden;border-block:1px solid var(--line);background:var(--card);-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marq-track{display:flex;gap:44px;width:max-content;padding:18px 0;animation:mq 42s linear infinite}
.marq:hover .marq-track{animation-play-state:paused}
.marq span{display:inline-flex;align-items:center;gap:12px;font:600 17px var(--display);color:var(--muted);white-space:nowrap}
.marq svg{color:var(--acc)}
@keyframes mq{to{transform:translateX(-50%)}}
.mods{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.mod{position:relative;display:block;padding:26px;border-radius:var(--r);border:1px dashed var(--line2);color:inherit;text-decoration:none;background:transparent}
.mod h3{font-size:20px;margin:10px 0 8px}.mod p{font-size:15.5px;margin:0 0 16px}
.mod .num{font:700 12px var(--sans);letter-spacing:.14em;color:var(--muted)}
.mod.open{border-style:solid;background:var(--card);box-shadow:var(--shadow)}
.mod.open:hover{transform:translateY(-3px);border-color:var(--acc)}
.status{display:inline-block;font:600 12.5px var(--sans);padding:4px 11px;border-radius:999px;background:var(--bg2);color:var(--muted)}
.status.open{background:var(--acc-chip);color:var(--acc-deep)}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:32px}
.principle{display:flex;gap:14px;padding:18px;border-radius:16px;background:var(--card);border:1px solid var(--line)}
.principle b{display:block;color:var(--ink);font-family:var(--display);font-size:17px}.principle span:not(.icon-tile){font-size:15px;color:var(--body)}
.principle .icon-tile{flex:none;width:38px;height:38px;border-radius:12px}
.outcomes{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:12px}
.outcomes li{display:flex;gap:12px;align-items:flex-start}.outcomes svg{flex:none;color:var(--acc);margin-top:3px}
.cta-band{max-width:var(--max);margin:84px auto;padding:56px 24px;text-align:center;border-radius:28px;position:relative;overflow:hidden;background:linear-gradient(135deg,var(--acc-deep),#06302D 60%,#0A1D1D);color:#D9ECEA;border:1px solid var(--line)}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 80% at 85% 0%,rgba(242,178,76,.3),transparent 70%),radial-gradient(40% 70% at 10% 100%,rgba(94,224,210,.25),transparent 70%)}
.cta-band>*{position:relative}.cta-band h2{color:#fff;margin:0 auto 12px;max-width:none}.cta-band p{margin:0 auto 26px}
.cta-band .btn-primary{color:#03201E;background:#fff;box-shadow:0 14px 30px -12px rgba(0,0,0,.5)}
@media(min-width:1200px){.cta-band{margin-inline:auto}}
.faq details,.deeper{border:1px solid var(--line);border-radius:16px;background:var(--card);margin-bottom:12px;overflow:hidden}
.faq summary,.deeper summary{cursor:pointer;list-style:none;padding:18px 22px;font:600 17px var(--display);color:var(--ink);display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker,.deeper summary::-webkit-details-marker{display:none}
.faq summary::after,.deeper summary::after{content:"+";font:400 26px/1 var(--sans);color:var(--acc);transition:transform .25s}
.faq details[open] summary::after,.deeper[open] summary::after{transform:rotate(45deg)}
.faq details p,.deeper .dbody{padding:0 22px 20px;margin:0}
.deeper .dbody>*:last-child{margin-bottom:0}
.deeper summary small{font:600 11.5px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--acc);display:block;margin-bottom:2px}

/* ---------- breadcrumbs, progress, lessons list ---------- */
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0 0 22px;padding:0;font-size:14px}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--muted)}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--acc)}
.crumbs [aria-current]{color:var(--ink);font-weight:600}
.hero-progress{margin-top:28px;max-width:460px}
.hero-progress .row{display:flex;justify-content:space-between;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink)}
.bar-track{height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.bar-fill{height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--acc2),var(--amber));transition:width .8s cubic-bezier(.2,.7,.2,1)}
.pathbar{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;padding-bottom:36px}
.pathbar>div{font-size:13px}.pathbar .seg{height:4px;border-radius:9px;background:var(--line2);margin-bottom:8px}
.pathbar .on .seg{background:linear-gradient(90deg,var(--acc2),var(--amber))}
.pathbar .n{font-weight:700;letter-spacing:.1em;color:var(--muted);font-size:11px}.pathbar .t{color:var(--ink);font-weight:600}
.lessons{list-style:none;margin:0;padding:0;display:grid;gap:12px;counter-reset:ls}
.lesson-row{position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;padding:18px 22px;border-radius:18px;background:var(--card);border:1px solid var(--line);text-decoration:none;color:inherit;transition:.25s;overflow:hidden}
.lesson-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(var(--acc2),var(--amber));transform:scaleY(0);transform-origin:top;transition:transform .35s}
.lesson-row:hover{transform:translateX(4px);border-color:var(--acc);box-shadow:var(--shadow)}.lesson-row:hover::before{transform:scaleY(1)}
.l-ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--acc-soft);color:var(--acc-deep);position:relative}
[data-theme=dark] .l-ico{color:var(--acc2)}
.l-ico .i-done{display:none}.lesson-row[data-done=true] .l-ico{background:var(--acc);color:#fff}.lesson-row[data-done=true] .i-main{display:none}.lesson-row[data-done=true] .i-done{display:block}
.l-title{font:600 18px var(--display);color:var(--ink)}.l-meta{font-size:14.5px;color:var(--muted);margin-top:2px}
.l-state{font:600 13px var(--sans);padding:6px 14px;border-radius:999px;background:var(--bg2);color:var(--muted)}
.lesson-row[data-done=true] .l-state{background:var(--acc-chip);color:var(--acc-deep)}
.done-banner{display:none;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 22px;border-radius:18px;background:var(--acc-soft);border:1px solid var(--acc);font-weight:600;color:var(--ink)}
.done-banner.show{display:flex}.done-banner[hidden]{display:none}
.disclaimer{margin-top:36px;font-size:14.5px;color:var(--muted);max-width:80ch}

/* ---------- lesson reading layout ---------- */
.lesson-wrap{max-width:var(--max);margin:0 auto;padding:56px 24px 40px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:56px;align-items:start}
.toc{position:sticky;top:92px;font-size:14.5px}
.toc .toc-h{font:700 11.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:7px 0 7px 16px;margin-left:-1px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;line-height:1.35;transition:.2s}
.toc a:hover{color:var(--ink)}.toc a.on{color:var(--ink);border-left-color:var(--acc);font-weight:600}
.toc .toc-meter{margin-top:20px}
.prose{max-width:740px;min-width:0}
.prose h2{font-size:clamp(27px,3.2vw,36px);margin:64px 0 18px;letter-spacing:-.025em;scroll-margin-top:90px}
.prose h2:first-child{margin-top:0}
.prose h2 .sn{display:inline-block;font:700 14px var(--sans);letter-spacing:.1em;color:var(--acc);margin-bottom:8px;display:block}
.prose h3{font-size:22px;margin:36px 0 12px}
.prose p,.prose li{font-size:18px;line-height:1.75}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--acc)}
.prose strong{color:var(--ink)}
.prose .lede{font-size:21px;line-height:1.6;color:var(--ink);font-weight:500}
.prose blockquote{margin:28px 0;padding:6px 0 6px 22px;border-left:3px solid var(--acc);font:italic 400 24px/1.4 var(--serif);color:var(--ink)}
.prose table{border-collapse:collapse;width:100%;margin:24px 0;font-size:16px}
.prose th{text-align:left;font:700 12px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:10px 14px;border-bottom:1px solid var(--line2)}
.prose td{padding:14px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.5}
.prose td:first-child{font-weight:600;color:var(--ink)}
.tbl-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:16px;background:var(--card)}.tbl-wrap table{margin:0}.tbl-wrap tr:last-child td{border-bottom:0}
.callout{display:flex;gap:16px;padding:20px 22px;border-radius:18px;margin:28px 0;border:1px solid var(--line);background:var(--card)}
.callout>svg{flex:none;margin-top:2px;color:var(--acc)}
.callout b.ct{display:block;font:700 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px;color:var(--acc)}
.callout p,.callout li{font-size:16.5px;line-height:1.65}.callout>div>*:last-child{margin-bottom:0}
.callout.warn{background:var(--risk-soft);border-color:color-mix(in srgb,var(--risk) 35%,transparent)}.callout.warn>svg,.callout.warn b.ct{color:var(--risk)}
.callout.legal{background:var(--amber-soft);border-color:color-mix(in srgb,var(--amber) 35%,transparent)}.callout.legal>svg,.callout.legal b.ct{color:var(--amber)}
.callout.tip{background:var(--acc-soft)}
.callout.story{background:linear-gradient(135deg,var(--card),transparent);border-style:dashed}
.keytakes{margin:44px 0 0;padding:30px;border-radius:22px;background:linear-gradient(145deg,var(--acc-soft),transparent 70%),var(--card);border:1px solid var(--line2)}
.keytakes h3{margin:0 0 16px;font-size:22px}.keytakes ul{margin:0;padding:0;list-style:none}
.keytakes li{display:flex;gap:12px;margin-bottom:12px;font-size:17px}.keytakes li svg{flex:none;color:var(--acc);margin-top:5px}
.gloss{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px;margin:20px 0}
.gloss div{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--card);font-size:15px;line-height:1.5}
.gloss b{display:block;font:700 15.5px var(--display);color:var(--ink);margin-bottom:3px}
.sources{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-size:15px}
.sources h3{font-size:15px;letter-spacing:.1em;text-transform:uppercase;font-family:var(--sans);color:var(--muted);margin:0 0 10px}
.sources ul{margin:0;padding-left:1.1em}.sources li{font-size:15px;margin-bottom:6px}
.legal-note{font-size:14.5px;color:var(--muted);margin-top:18px}
.lesson-nav{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px}
.done-card{margin-top:44px;padding:30px;border-radius:24px;text-align:center;background:var(--card);border:1px solid var(--line2);box-shadow:var(--shadow)}
.done-card h3{margin:0 0 6px}.done-card p{margin:0 auto 20px;max-width:46ch}
.done-card .done-banner{margin-top:20px;text-align:left}
.steps{counter-reset:st;list-style:none;padding:0!important;margin:22px 0}
.steps>li{counter-increment:st;position:relative;padding:4px 0 18px 54px}
.steps>li::before{content:counter(st);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:12px;background:var(--acc-soft);color:var(--acc-deep);font:700 16px/36px var(--display);text-align:center}
.steps>li::after{content:"";position:absolute;left:17px;top:42px;bottom:4px;width:1px;background:var(--line2)}
.steps>li:last-child::after{display:none}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
.compare>div{padding:20px 22px;border-radius:18px;border:1px solid var(--line);background:var(--card)}
.compare h3,.compare h4{font-size:16px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.compare .yes{border-color:color-mix(in srgb,var(--acc) 45%,transparent)}.compare .yes h3,.compare .yes h4{color:var(--acc)}
.compare .no{border-color:color-mix(in srgb,var(--risk) 45%,transparent)}.compare .no h3,.compare .no h4{color:var(--risk)}
.compare ul{margin:0;padding-left:1.1em}.compare li{font-size:16px!important;line-height:1.55}
.timeline{margin:26px 0;padding-left:26px;border-left:2px solid var(--line2)}
.timeline>div{position:relative;margin-bottom:22px}.timeline>div::before{content:"";position:absolute;left:-33px;top:7px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:3px solid var(--acc)}
.timeline b{display:block;color:var(--ink);font:700 17px var(--display)}.timeline span{font-size:16.5px}

/* ---------- interactive components ---------- */
.ix{margin:36px 0;padding:28px;border-radius:24px;background:var(--card);border:1px solid var(--line2);box-shadow:var(--shadow-lg);position:relative}
.ix-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.ix-head .tag{font:700 11.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--acc)}
.ix-head h3{margin:0!important;font-size:21px!important}
.ix-head .icon-tile{width:40px;height:40px;border-radius:12px;flex:none}
.q{margin-bottom:26px}.q:last-of-type{margin-bottom:8px}
.q-text{font:600 19px/1.4 var(--display);color:var(--ink);margin-bottom:14px}
.q-quote{padding:14px 18px;border-radius:14px;background:var(--bg2);border:1px dashed var(--line2);font:italic 400 21px/1.4 var(--serif);color:var(--ink);margin-bottom:14px}
.opts{display:grid;gap:10px}
.opt{display:flex;gap:14px;align-items:flex-start;text-align:left;width:100%;padding:14px 18px;border-radius:14px;border:1px solid var(--line2);background:var(--card-solid);color:var(--body);font:500 16.5px/1.5 var(--sans);cursor:pointer;transition:.2s}
.opt:hover:not([disabled]){border-color:var(--acc);transform:translateX(3px);color:var(--ink)}
.opt .bd{flex:none;width:26px;height:26px;border-radius:9px;background:var(--bg2);display:grid;place-items:center;font:700 13px var(--sans);color:var(--muted)}
.opt.right{border-color:var(--acc);background:var(--acc-soft);color:var(--ink)}.opt.right .bd{background:var(--acc);color:#fff}
.opt.wrong{border-color:var(--risk);background:var(--risk-soft);color:var(--ink)}.opt.wrong .bd{background:var(--risk);color:#fff}
.opt[disabled]{cursor:default}.opt.dim{opacity:.55}
.qfb{margin-top:12px;padding:14px 18px;border-radius:14px;font-size:16px;line-height:1.6;background:var(--bg2);animation:rise .4s both}
.qfb b{color:var(--ink)}.qfb.ok{background:var(--acc-soft)}.qfb.no{background:var(--risk-soft)}
.qbar{display:flex;gap:6px;margin-bottom:20px}.qbar i{flex:1;height:5px;border-radius:9px;background:var(--line2);transition:.3s}.qbar i.ok{background:var(--acc)}.qbar i.no{background:var(--risk)}.qbar i.cur{background:var(--amber)}
.qres{text-align:center;padding:12px 0 4px}.qres .score{font:700 64px/1 var(--display);color:var(--ink);letter-spacing:-.04em}.qres .score small{font-size:.4em;color:var(--muted)}
.qres p{max-width:50ch;margin:10px auto 18px}
.meter{position:relative;height:14px;border-radius:99px;background:var(--line);overflow:visible;margin:10px 0 6px}
.meter-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--risk),var(--amber),var(--acc2));transition:width .8s cubic-bezier(.2,.7,.2,1)}
.meter-gem{position:absolute;top:50%;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#FFE3A6,#E39B2E);box-shadow:0 0 0 4px var(--bg),0 0 22px 4px rgba(247,198,106,.7);transition:left .8s cubic-bezier(.2,.7,.2,1)}
.meter-row{display:flex;justify-content:space-between;font-size:14px;font-weight:600;color:var(--ink)}
.meter.shake{animation:shake .4s}@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.sc-title{font:700 24px var(--display);color:var(--ink);margin:18px 0 8px}
.sc-setup{font-size:18px;color:var(--body)}
.sc-art{margin:12px 0 0;border-radius:16px;overflow:hidden}
.choices{display:grid;gap:10px;margin-top:18px}
.choice{display:flex;gap:14px;text-align:left;padding:16px 18px;border-radius:16px;border:1px solid var(--line2);background:var(--card-solid);cursor:pointer;font:500 17px/1.5 var(--sans);color:var(--body);transition:.2s}
.choice:hover:not([disabled]){border-color:var(--acc);transform:translateY(-2px);color:var(--ink)}
.choice .badge{flex:none;width:28px;height:28px;border-radius:9px;background:var(--bg2);display:grid;place-items:center;font:700 13px var(--sans)}
.choice.is-picked{border-color:var(--acc);box-shadow:0 0 0 3px var(--acc-soft)}.choice[disabled]:not(.is-picked){opacity:.5}
.outcome{margin-top:16px;padding:20px;border-radius:18px;border:1px solid var(--line2);background:var(--bg2);position:relative;animation:rise .45s both}
.outcome .row{display:flex;gap:16px}.vico{flex:none;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--card-solid)}
.k-solid .vico{color:var(--acc)}.k-partial .vico{color:var(--amber)}.k-risky .vico{color:var(--risk)}
.outcome.k-solid{background:var(--acc-soft);border-color:var(--acc)}.outcome.k-risky{background:var(--risk-soft);border-color:var(--risk)}
.vmeta{display:flex;gap:10px;align-items:center;margin-bottom:6px;flex-wrap:wrap}
.vchip{font:700 12.5px var(--sans);padding:4px 11px;border-radius:99px;background:var(--card-solid);color:var(--ink)}.vdelta{font:600 13.5px var(--sans);color:var(--muted)}
.vtext{margin:0 0 14px;font-size:16.5px;line-height:1.6}
.burst{position:absolute;left:30px;top:30px;width:8px;height:8px;border-radius:50%;animation:burst .8s ease-out forwards}
@keyframes burst{to{transform:translate(var(--dx),var(--dy)) scale(.2);opacity:0}}
.results{display:grid;gap:8px;margin:16px 0}.result{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;border-radius:12px;background:var(--bg2);flex-wrap:wrap}
.sort-card{padding:22px;border-radius:18px;background:var(--bg2);border:1px dashed var(--line2);font:600 20px/1.4 var(--display);color:var(--ink);margin:6px 0 16px;min-height:90px;display:flex;align-items:center}
.buckets{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.bucket{padding:14px;border-radius:14px;border:1px solid var(--line2);background:var(--card-solid);cursor:pointer;font:600 15.5px/1.35 var(--sans);color:var(--ink);text-align:left;transition:.2s}
.bucket small{display:block;font-weight:400;color:var(--muted);font-size:13px;margin-top:3px}
.bucket:hover:not([disabled]){border-color:var(--acc);transform:translateY(-2px)}.bucket.right{background:var(--acc-soft);border-color:var(--acc)}.bucket.wrong{background:var(--risk-soft);border-color:var(--risk)}
.flips{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:26px 0}
.flip{perspective:900px;background:none;border:0;padding:0;cursor:pointer;min-height:190px;font:inherit;text-align:left}
.flip .fi{position:relative;display:block;height:100%;min-height:190px;transition:transform .6s cubic-bezier(.2,.7,.2,1);transform-style:preserve-3d}
.flip[aria-pressed=true] .fi{transform:rotateY(180deg)}
.flip .ff,.flip .fb{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;padding:22px;border-radius:20px;border:1px solid var(--line2);display:flex;flex-direction:column;justify-content:space-between;gap:10px;font-size:16.5px;line-height:1.5}
.flip .ff{background:var(--risk-soft);color:var(--ink)}.flip .fb{background:var(--acc-soft);transform:rotateY(180deg);color:var(--ink)}
.flip small{font:700 11.5px var(--sans);letter-spacing:.14em;text-transform:uppercase}.flip .ff small{color:var(--risk)}.flip .fb small{color:var(--acc)}
.flip .hint2{font-size:13px;color:var(--muted)}
.work label,.work .wl{display:block;font:600 15.5px var(--sans);color:var(--ink);margin:18px 0 6px}
.work .wh{font-size:14.5px;color:var(--muted);margin:0 0 6px}
.work textarea,.work input[type=text],.logt input,.logt textarea,.field input,.field textarea,.field select,.wt{width:100%;padding:13px 15px;border-radius:12px;border:1px solid var(--line2);background:var(--card-solid);color:var(--ink);font:400 16px/1.5 var(--sans);transition:.2s;resize:vertical}
.work textarea:focus,.work input:focus,.logt input:focus,.field input:focus,.wt:focus{outline:0;border-color:var(--acc);box-shadow:0 0 0 4px var(--acc-soft)}
.saved{font-size:13px;color:var(--acc);opacity:0;transition:opacity .4s;margin-left:10px}.saved.on{opacity:1}
.logt{overflow-x:auto;margin:14px 0}.logt table{border-collapse:separate;border-spacing:6px;min-width:560px;width:100%}.logt th{font:700 11.5px var(--sans)!important;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-align:left;padding:2px 4px!important;border:0!important}
.logt td{padding:0!important;border:0!important}.logt input{padding:10px 12px;font-size:14.5px}
.chk{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--card-solid);margin-bottom:8px;cursor:pointer;font-size:16.5px;line-height:1.5}
.chk input{width:20px;height:20px;margin-top:3px;accent-color:var(--acc);flex:none}
.chk:has(input:checked){background:var(--acc-soft);border-color:var(--acc)}
.tf-btns{display:flex;gap:10px;margin-top:6px}.tf-btn{flex:1;padding:12px;border-radius:12px;border:1px solid var(--line2);background:var(--card-solid);font:600 16px var(--sans);color:var(--ink);cursor:pointer}
.tf-btn.right{background:var(--acc-soft);border-color:var(--acc)}.tf-btn.wrong{background:var(--risk-soft);border-color:var(--risk)}
.tf-expl{margin-top:12px}
.stat-grid,.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin:0 0 26px}
.stat{padding:20px;border-radius:18px;background:var(--card);border:1px solid var(--line)}.stat .n{font:700 36px/1 var(--display);color:var(--ink);letter-spacing:-.03em}.stat .l{font-size:14px;color:var(--muted);margin-top:6px}

/* certificate + code card */
.cert{position:relative;padding:48px 36px;border-radius:26px;text-align:center;background:linear-gradient(145deg,var(--card-solid),var(--bg2));border:1px solid var(--line2);box-shadow:var(--shadow-lg);overflow:hidden}
.cert::before{content:"";position:absolute;inset:12px;border-radius:18px;border:1px solid var(--line2);pointer-events:none}
.cert .seal{width:84px;height:84px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;color:#3a2a07;background:radial-gradient(circle at 35% 30%,#FFE3A6,#E39B2E);box-shadow:0 10px 30px -8px rgba(227,155,46,.6)}
.cert .c-kicker{font:700 12px var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.cert .c-name{font:400 clamp(36px,6vw,56px)/1.1 var(--serif);font-style:italic;color:var(--ink);margin:12px 0}
.cert .c-line{max-width:46ch;margin:0 auto;font-size:16px}
.cert .c-date{margin-top:18px;font-size:14px;color:var(--muted)}
.code-card{padding:28px;border-radius:22px;background:linear-gradient(150deg,var(--acc-deep),#06302D);color:#D9ECEA;position:relative;overflow:hidden}
.code-card h4{color:#fff;font-size:12px;letter-spacing:.2em;text-transform:uppercase;font-family:var(--sans);margin-bottom:14px}
.code-card ol{margin:0;padding-left:1.2em}.code-card li{margin-bottom:12px;font-size:17px;line-height:1.55;color:#D9ECEA}.code-card li b{color:#fff}
.code-card .sig{margin-top:18px;font:italic 400 28px var(--serif);color:#fff}
.print-area{display:none}

/* ---------- forms + account + admin ---------- */
.article{max-width:var(--max);margin:0 auto;padding:56px 24px 40px}
.article.narrow,.article>.card{max-width:720px}
.article .prose{margin:0 auto}
.account{margin:0 auto}
.field{display:block;margin-top:18px}.field>span{display:block;font:600 14.5px var(--sans);color:var(--ink);margin-bottom:6px}
.hint{font-size:14.5px;color:var(--muted);margin:8px 0 0}
.checkline{display:flex;gap:12px;align-items:flex-start;margin-top:18px;font-size:15.5px}
.form-msg{padding:12px 16px;border-radius:12px;font-size:15px;margin-top:16px}.form-msg.ok{background:var(--acc-soft);color:var(--ink)}.form-msg.err{background:var(--risk-soft);color:var(--ink)}
.tabs{display:flex;gap:6px;padding:5px;border-radius:14px;background:var(--bg2);margin-bottom:12px}
.tabs button{flex:1;padding:11px;border:0;border-radius:10px;background:transparent;font:600 15px var(--sans);color:var(--muted);cursor:pointer}
.tabs button[aria-selected=true]{background:var(--card-solid);color:var(--ink);box-shadow:var(--shadow)}
.note{padding:14px 18px;border-radius:12px;background:var(--amber-soft)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.tbl{width:100%;border-collapse:collapse;font-size:15px}.tbl th{text-align:left;font:700 11.5px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:12px 16px;border-bottom:1px solid var(--line2)}
.tbl td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:middle}.tbl td.em{font-weight:600;color:var(--ink);word-break:break-word}.tbl .acts{display:flex;gap:8px;flex-wrap:wrap}
.lrow{margin-bottom:16px}.ltop{display:flex;justify-content:space-between;font-size:15px;margin-bottom:6px}
.chart{display:flex;align-items:flex-end;gap:10px;height:170px;padding-top:20px}.chart .col{flex:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px}
.chart .col i{display:block;width:100%;border-radius:8px 8px 3px 3px;background:linear-gradient(var(--acc2),var(--acc-deep));min-height:4px}.chart .v{font-size:12px;font-weight:600;color:var(--ink)}.chart .d{font-size:11px;color:var(--muted)}
.d-code-list{padding-left:1.2em}.d-quote{margin:12px 0 0;padding-left:18px;border-left:3px solid var(--acc);font:italic 400 22px/1.4 var(--serif);color:var(--ink)}
.mini-list{list-style:none;padding:0;margin:0}.mini-list li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:15px}
.soon{color:var(--muted)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg2);margin-top:40px}
.foot{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-top:56px;padding-bottom:36px}
.foot p{font-size:15px;margin-top:14px;max-width:38ch}.foot ul{list-style:none;padding:0;margin:12px 0 0}.foot li{margin-bottom:8px}.foot a{color:var(--body);text-decoration:none;font-size:15px}.foot a:hover{color:var(--acc)}
.fh{font:700 12px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.foot-note{padding-bottom:36px;font-size:13.5px;color:var(--muted);max-width:var(--max)}

/* motion helpers */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
html:not(.js) .reveal{opacity:1;transform:none}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:90}
.draw{stroke-dasharray:30;stroke-dashoffset:30;animation:dr .6s .1s forwards}@keyframes dr{to{stroke-dashoffset:0}}
.orb{animation:fl 7s ease-in-out infinite}.orb2{animation:fl 9s ease-in-out -3s infinite}.spin{transform-origin:center;transform-box:fill-box;animation:sp 40s linear infinite}@keyframes sp{to{transform:rotate(360deg)}}

@media(max-width:980px){
 .hero-grid,.lh-grid,.split{grid-template-columns:1fr}.hero-art,.lh-art{max-width:520px;margin:0 auto;order:-1}.lh-art{order:0}
 .lesson-wrap{grid-template-columns:1fr;gap:24px}.toc{position:static;border:1px solid var(--line);border-radius:16px;padding:16px 18px;background:var(--card)}.toc ol{display:none}.toc.open ol{display:block}
 .toc .toc-h{cursor:pointer;margin:0;display:flex;justify-content:space-between}.toc .toc-h::after{content:"+"}.toc.open .toc-h{margin-bottom:12px}
 .grid-3,.mods,.principles{grid-template-columns:1fr 1fr}.bento{grid-template-columns:repeat(2,1fr)}.bento .b2,.bento .b3,.bento .b4{grid-column:span 2}
 .foot{grid-template-columns:1fr 1fr}.pathbar{grid-template-columns:repeat(3,1fr)}.lnum{display:none}
}
@media(max-width:640px){
 body{font-size:16.5px}.wrap,.section,.article,.lesson-wrap{padding-left:18px;padding-right:18px}.section{padding-top:60px}
 .grid-3,.mods,.principles,.compare,.grid-2{grid-template-columns:1fr}.foot{grid-template-columns:1fr}.lesson-row{grid-template-columns:auto 1fr;}.l-state{display:none}
 .ix{padding:20px 16px;border-radius:20px}.prose p,.prose li{font-size:17px}.cert{padding:36px 18px}.band{padding:36px 18px 44px}.hero{padding-top:40px}
 .bento{grid-template-columns:1fr}.bento .b2,.bento .b3,.bento .b4{grid-column:span 1}
}
@media(prefers-reduced-motion:reduce){
 *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
 .reveal{opacity:1;transform:none}
}
@media print{
 body{background:#fff;color:#000}
 .site-header,.site-footer,.topwrap,main>*:not(.print-keep),#sbar,.no-print,.toc{display:none!important}
 body.print-code .print-area.pa-code,body.print-cert .print-area.pa-cert{display:block!important}
 .cert,.code-card{box-shadow:none;break-inside:avoid}
 .code-card{background:#fff!important;color:#000;border:2px solid #000}.code-card *{color:#000!important}
}

.answer{padding:24px 28px;border-radius:20px;background:var(--card);border:1px solid var(--line);margin-bottom:12px}.answer p{margin:0}
.article .card{max-width:none}
.article>.account.card{max-width:640px}
.note b{color:var(--ink)}
code{font:500 .9em ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--bg2);padding:2px 6px;border-radius:6px}
.lesson-nav .btn svg{flex:none}
[hidden]{display:none!important}