/* SketchCast v3 — "the living textbook"
   Paper, ink, highlighter, red pencil. SK lives on a chalkboard. */

:root{
  --paper:#F4EFE6; --paper-2:#ECE5D7; --card:#FFFCF6; --rule:#DCD3C2; --rule-soft:#E8E1D3;
  --ink:#15202B; --ink-2:#38434F; --muted:#6A727C;
  --teal:#0B8C7E; --teal-deep:#06574F; --teal-wash:#DDEFE9;
  --hi:#F6D646; --hi-soft:#FBEBA0;
  --pencil:#D4472C; --blue-rule:#C9D8E6;
  --board:#0F2A2C; --board-2:#14363A; --chalk:#E8F0EB; --chalk-dim:#9FB8B2;
  --serif:"Instrument Serif","Iowan Old Style",Georgia,serif;
  --sans:"Familjen Grotesk","Segoe UI",sans-serif;
  --hand:"Kalam","Comic Sans MS",cursive;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --wrap:1240px; --gutter:clamp(18px,4vw,48px);
  --ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);font-size:17px;line-height:1.6;color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
/* paper grain over everything */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:100;opacity:.35;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .3 0 0 0 0 .22 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img,video,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2.5px solid var(--teal);outline-offset:3px;border-radius:4px}
::selection{background:var(--hi)}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--gutter)}
.skip{position:absolute;left:-999px;top:8px;z-index:200;background:var(--ink);color:#fff;padding:10px 16px;border-radius:6px}
.skip:focus{left:12px}

/* ── type ─────────────────────────────────────── */
.display{font-family:var(--serif);font-weight:400;letter-spacing:-.015em;line-height:.95}
h1.display{font-size:clamp(54px,7.6vw,122px)}
h2.display{font-size:clamp(40px,5.6vw,84px);line-height:1}
h3.display{font-size:clamp(28px,3vw,40px);line-height:1.05}
.display em{font-style:italic}
.lede{font-size:clamp(18px,1.6vw,21px);line-height:1.55;color:var(--ink-2);max-width:56ch}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:12px}
.kicker b{font-weight:500;color:var(--teal-deep)}
.kicker::after{content:"";height:1px;flex:0 0 48px;background:currentColor;opacity:.4}
.kicker.no-rule::after{display:none}
.hand{font-family:var(--hand);color:var(--pencil);font-size:20px;line-height:1.25}
.mono{font-family:var(--mono)}
p+p{margin-top:1em}

/* highlighter: sweeps in when .in is set (or immediately in hero) */
.hl{
  background:linear-gradient(100deg,transparent 0 .3em,var(--hi) .3em calc(100% - .2em),transparent calc(100% - .2em)) no-repeat 0 82%/0% 42%;
  transition:background-size 1s var(--ease) .25s;padding-inline:.06em;
}
.in .hl,.hl.in{background-size:100% 42%}
.circled{position:relative;display:inline-block}
.circled svg{position:absolute;inset:-18% -8% -22% -8%;width:116%;height:140%;overflow:visible;pointer-events:none}
.circled path{fill:none;stroke:var(--pencil);stroke-width:2.2;stroke-linecap:round;stroke-dasharray:640;stroke-dashoffset:640;transition:stroke-dashoffset 1.2s var(--ease) .6s}
.in .circled path,.circled.in path{stroke-dashoffset:0}

/* ── buttons: index-card stamps ───────────────── */
.btn{
  display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:16px;line-height:1;
  padding:16px 24px;border:1.5px solid var(--ink);border-radius:3px;background:var(--ink);color:var(--paper);
  box-shadow:4px 4px 0 var(--teal);transition:transform .18s var(--ease),box-shadow .18s var(--ease);white-space:nowrap;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--teal)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--teal)}
.btn .arr{transition:transform .2s var(--ease)}
.btn:hover .arr{transform:translateX(3px)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:4px 4px 0 var(--rule)}
.btn.ghost:hover{box-shadow:6px 6px 0 var(--ink)}
.btn.light{background:var(--chalk);color:var(--board);border-color:var(--chalk);box-shadow:4px 4px 0 var(--teal)}
.btn.small{padding:11px 16px;font-size:14px;box-shadow:3px 3px 0 var(--teal)}
.link{font-weight:600;border-bottom:1.5px solid var(--teal);padding-bottom:2px;transition:color .2s}
.link:hover{color:var(--teal-deep)}
.actions{display:flex;flex-wrap:wrap;gap:16px 20px;align-items:center}

/* ── header ───────────────────────────────────── */
.site-head{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px) saturate(1.2);border-bottom:1px solid transparent;transition:border-color .3s}
.site-head.scrolled{border-bottom-color:var(--rule)}
.nav{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand img{width:40px;height:40px;border-radius:50%;background:#fff;box-shadow:0 0 0 1px var(--rule)}
.brand .word{font-family:var(--serif);font-size:28px;letter-spacing:-.01em;line-height:1}
.brand .word i{color:var(--teal)}
.nav-links{display:flex;gap:4px;margin-inline:auto}
.nav-links a{font-size:15px;font-weight:500;padding:8px 12px;border-radius:3px;color:var(--ink-2);position:relative}
.nav-links a:hover{color:var(--ink);background:var(--paper-2)}
.nav-links a[aria-current=page]{color:var(--ink)}
.nav-links a[aria-current=page]::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:6px;background:var(--hi);z-index:-1;border-radius:1px}
.nav-end{display:flex;align-items:center;gap:18px;flex:none}
.nav-end .login{font-weight:500;font-size:15px;color:var(--ink-2)}
.nav-end .login:hover{color:var(--ink)}
.menu-btn{display:none;width:44px;height:44px;border:1.5px solid var(--ink);border-radius:3px;align-items:center;justify-content:center}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;transition:transform .25s}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0}
.menu-btn span::before{top:-6px}.menu-btn span::after{top:6px}
.menu-open .menu-btn span{background:transparent}
.menu-open .menu-btn span::before{transform:translateY(6px) rotate(45deg)}
.menu-open .menu-btn span::after{transform:translateY(-6px) rotate(-45deg)}
.drawer{display:none}

@media (max-width:1240px){.nav-links a{padding:8px 9px;font-size:14.5px}.nav{gap:18px}}
@media (max-width:1180px){
  .nav-links,.nav-end .login,.nav-end .btn{display:none}
  .menu-btn{display:flex}
  .nav-end{margin-inline-start:auto}
  .drawer{display:block;position:fixed;inset:72px 0 0;background:var(--paper);z-index:49;padding:28px var(--gutter);transform:translateY(-8px);opacity:0;visibility:hidden;transition:.25s var(--ease);overflow:auto}
  .menu-open .drawer{opacity:1;visibility:visible;transform:none}
  .drawer a.d-link{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--serif);font-size:34px;padding:12px 0;border-bottom:1px solid var(--rule)}
  .drawer a.d-link small{font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.1em}
  .drawer .actions{margin-top:28px}
}

/* ── sections & notebook surfaces ─────────────── */
.section{padding-block:clamp(80px,11vw,150px);position:relative}
.section.tight{padding-block:clamp(56px,7vw,96px)}
.ruled{
  background-image:linear-gradient(var(--blue-rule) 1px,transparent 1px);
  background-size:100% 34px;background-position:0 12px;
}
.ruled-soft{background-image:linear-gradient(color-mix(in srgb,var(--blue-rule) 55%,transparent) 1px,transparent 1px);background-size:100% 34px}
.margin-line{position:absolute;top:0;bottom:0;inset-inline-start:max(14px,calc((100vw - var(--wrap))/2 - 14px));width:2px;background:color-mix(in srgb,var(--pencil) 45%,transparent);pointer-events:none}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:28px 64px;align-items:end;margin-bottom:clamp(44px,6vw,80px)}
.sec-head .kicker{grid-column:1/-1}
.sec-head .lede{justify-self:end}
.chapter-no{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--pencil)}
@media (max-width:860px){.sec-head{grid-template-columns:1fr}.sec-head .lede{justify-self:start}}

/* ── HERO ─────────────────────────────────────── */
.hero{position:relative;padding-block:clamp(36px,6vw,80px) clamp(40px,5vw,72px);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(30px,5vw,70px);align-items:center}
.hero h1{margin-block:18px 20px}
.hero h1 .line{display:block;overflow:hidden;padding-bottom:.06em}
.hero h1 .line>span{display:inline-block;transform:translateY(105%);animation:lineUp 1s var(--ease) forwards}
.hero h1 .line:nth-child(2)>span{animation-delay:.12s}
@keyframes lineUp{to{transform:none}}
.hero .tag{font-family:var(--serif);font-size:clamp(24px,2.4vw,34px);line-height:1.15;margin-bottom:18px;color:var(--teal-deep)}
.hero .lede{margin-bottom:34px}
.hero-meta{margin-top:38px;display:flex;flex-wrap:wrap;gap:10px 26px;font-size:14px;color:var(--muted)}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal)}
.rise{opacity:0;transform:translateY(18px);animation:rise .9s var(--ease) forwards;animation-delay:var(--d,0s)}
@keyframes rise{to{opacity:1;transform:none}}

/* the open book */
.book-stage{position:relative;aspect-ratio:1/0.95;min-height:440px}
.book{
  position:absolute;inset:8% 4% 14% 0;display:grid;grid-template-columns:1fr 1fr;
  filter:drop-shadow(0 30px 40px rgba(60,45,20,.18)) drop-shadow(0 6px 10px rgba(60,45,20,.12));
  transform:rotate(-2.5deg);animation:bookIn 1.1s var(--ease) .2s both;
}
@keyframes bookIn{from{opacity:0;transform:rotate(-6deg) translateY(30px)}}
.page{background:var(--card);padding:9% 9% 8%;position:relative;overflow:hidden}
.page.l{border-radius:6px 2px 2px 6px;background:linear-gradient(90deg,var(--card) 82%,#EFE7D6)}
.page.r{border-radius:2px 6px 6px 2px;background:linear-gradient(270deg,var(--card) 84%,#EFE7D6)}
.page .pg-head{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--muted);display:flex;justify-content:space-between;margin-bottom:12%}
.page h4{font-family:var(--serif);font-weight:400;font-size:clamp(20px,2vw,30px);line-height:1.05;margin-bottom:10%}
.txt{height:7px;border-radius:2px;background:#DDD5C6;margin-bottom:11px;position:relative}
.txt.s{width:62%}.txt.m{width:84%}
.txt.mark::after{content:"";position:absolute;left:-3px;top:-4px;bottom:-4px;width:0;background:var(--hi);mix-blend-mode:multiply;border-radius:2px;animation:sweep .9s var(--ease) forwards;animation-delay:var(--d,1.2s)}
@keyframes sweep{to{width:calc(100% + 6px)}}
.fig{margin:10% 0 8%;aspect-ratio:16/9;border-radius:4px;background:#E7E0D1 center/cover;position:relative}
.page .note{position:absolute;font-family:var(--hand);color:var(--pencil);font-size:clamp(13px,1.2vw,17px);line-height:1.1;transform:rotate(-4deg);opacity:0;animation:fade .6s ease forwards;animation-delay:var(--d,2s)}
@keyframes fade{to{opacity:1}}
.page.r .pr-title{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--teal-deep);margin-bottom:9%}

/* kit tiles that fly out of the book */
.kit-tile{
  position:absolute;display:flex;align-items:center;gap:12px;background:var(--card);border:1.5px solid var(--ink);border-radius:4px;
  padding:10px 14px 10px 10px;box-shadow:4px 4px 0 var(--ink);font-size:14px;font-weight:600;line-height:1.2;
  opacity:0;animation:tileIn .8s var(--ease) forwards;animation-delay:var(--d,1.6s);z-index:3;
}
.kit-tile small{display:block;font-family:var(--mono);font-weight:400;font-size:10.5px;letter-spacing:.06em;color:var(--muted);margin-top:2px}
.kit-tile .ic{width:34px;height:34px;border-radius:3px;display:grid;place-items:center;flex:none;background:var(--teal-wash);color:var(--teal-deep)}
.kit-tile .ic svg{width:18px;height:18px}
@keyframes tileIn{from{opacity:0;transform:translate(var(--fx,-30px),var(--fy,20px)) rotate(var(--fr,-6deg)) scale(.9)}to{opacity:1;transform:rotate(var(--r,0deg))}}
.kit-tile.video{padding:0;flex-direction:column;align-items:stretch;gap:0;width:min(46%,250px);overflow:hidden}
.kit-tile.video .thumb{aspect-ratio:16/9;background:#1d2a2d center/cover;position:relative}
.kit-tile.video .thumb::after{content:"";position:absolute;inset:0;margin:auto;width:42px;height:42px;border-radius:50%;background:rgba(255,252,246,.92) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 7v10l8-5z' fill='%2315202B'/%3E%3C/svg%3E") center/22px no-repeat}
.kit-tile.video .cap{padding:10px 12px}
.people-row{position:absolute;inset-inline:0;bottom:0;display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;z-index:4}
.person{display:flex;align-items:center;gap:8px;background:var(--ink);color:var(--paper);border-radius:40px;padding:6px 14px 6px 6px;font-size:13px;font-weight:600;opacity:0;animation:rise .6s var(--ease) forwards;animation-delay:var(--d,2.6s)}
.person i{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:11px;background:var(--hi);color:var(--ink)}
.person:nth-child(2) i{background:#9FE0D2}.person:nth-child(3) i{background:#F5B9A8}.person:nth-child(4) i{background:#C9D8E6}
.hero-arrow{position:absolute;z-index:5;pointer-events:none;opacity:0;animation:fade .5s ease forwards;animation-delay:var(--d,2.3s)}
.hero-arrow path{fill:none;stroke:var(--pencil);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .book-stage{max-width:640px;width:100%;margin-inline:auto}
}
@media (max-width:560px){
  .book-stage{min-height:0;aspect-ratio:1/1.08}
  .book{inset:4% 0 22% 0}
  .page{padding:8% 7%}
  .txt{height:5px;margin-bottom:8px}
  .kit-tile{font-size:12px;padding:7px 10px 7px 7px}
  .kit-tile .ic{width:26px;height:26px}
  .kit-tile small{font-size:9.5px}
  .person{font-size:11.5px;padding:5px 11px 5px 5px}
  .person i{width:20px;height:20px}
  .kit-tile:not(.video) small{display:none}
  .kit-tile.t-plan{top:44%!important;right:auto!important;left:4%}
  .kit-tile.t-slides{top:46%!important;right:2%!important}
  .kit-tile.t-sheet{top:62%!important;right:auto!important;left:10%}
  .kit-tile.t-quiz{top:64%!important;right:4%!important}
}

/* contents strip */
.contents{border-block:1.5px solid var(--ink);background:var(--card)}
.contents ol{list-style:none;display:grid;grid-template-columns:repeat(9,1fr)}
.contents li+li{border-inline-start:1px solid var(--rule)}
.contents a{display:block;padding:16px 16px 18px;transition:background .2s}
.contents a:hover{background:var(--hi-soft)}
.contents .n{font-family:var(--mono);font-size:11px;color:var(--pencil);letter-spacing:.1em}
.contents .t{display:block;font-family:var(--serif);font-size:20px;line-height:1.1;margin-top:4px}
.contents .cap{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;padding:10px 16px;border-bottom:1px solid var(--rule);color:var(--muted);display:flex;justify-content:space-between}
@media (max-width:1180px){.contents ol{grid-template-columns:repeat(5,1fr)}.contents li:nth-child(6){border-inline-start:0}.contents li:nth-child(n+6){border-top:1px solid var(--rule)}}
@media (max-width:760px){.contents ol{grid-template-columns:repeat(3,1fr)}.contents li{border-inline-start:1px solid var(--rule)!important}.contents li:nth-child(3n+1){border-inline-start:0!important}.contents li:nth-child(n+4){border-top:1px solid var(--rule)}}
@media (max-width:560px){.contents ol{grid-template-columns:repeat(2,1fr)}.contents li{border-inline-start:1px solid var(--rule)!important}.contents li:nth-child(odd){border-inline-start:0!important}.contents li:nth-child(n+3){border-top:1px solid var(--rule)}.contents .t{font-size:18px}}

/* ── generic grids & cards ────────────────────── */
.grid{display:grid;gap:clamp(18px,2.2vw,28px)}
.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){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--rule);border-radius:4px;padding:clamp(22px,2.4vw,32px);position:relative}
.card.ink{border:1.5px solid var(--ink);box-shadow:5px 5px 0 var(--ink)}
.card h3{font-family:var(--serif);font-weight:400;font-size:clamp(26px,2.4vw,32px);line-height:1.05;margin-bottom:10px}
.card p{color:var(--ink-2);font-size:16px}
.card .num{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--pencil);display:block;margin-bottom:22px}
.index-card{background:var(--card);border-radius:3px;padding:30px 28px 28px;position:relative;box-shadow:0 1px 0 var(--rule),0 18px 30px -20px rgba(60,45,20,.35);
  background-image:linear-gradient(var(--card) 0 54px,color-mix(in srgb,var(--pencil) 55%,transparent) 54px 55.5px,transparent 55.5px),linear-gradient(color-mix(in srgb,var(--blue-rule) 70%,transparent) 1px,transparent 1px);
  background-size:100% 100%,100% 30px;background-position:0 0,0 55px;transition:transform .35s var(--ease)}
.index-card:hover{transform:rotate(-1deg) translateY(-4px)}
.index-card h3{font-family:var(--serif);font-weight:400;font-size:28px;line-height:1;margin:-6px 0 24px;height:40px;display:flex;align-items:center}
.index-card p{font-size:16px;line-height:30px;color:var(--ink-2)}

/* ── kit section (book → kit) ─────────────────── */
.kit-board{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(28px,5vw,72px);align-items:start}
.kit-list{list-style:none;counter-reset:k;border-top:1.5px solid var(--ink)}
.kit-list li{display:grid;grid-template-columns:52px 1fr auto;gap:16px;align-items:baseline;padding:20px 0;border-bottom:1px solid var(--rule);cursor:default;transition:padding .3s var(--ease),background .3s}
.kit-list li::before{counter-increment:k;content:counter(k,decimal-leading-zero);font-family:var(--mono);font-size:12px;color:var(--pencil)}
.kit-list li b{font-family:var(--serif);font-weight:400;font-size:clamp(24px,2.3vw,32px);line-height:1}
.kit-list li span{font-size:15px;color:var(--muted);text-align:end}
.kit-list li:hover,.kit-list li.on{padding-inline-start:12px;background:linear-gradient(90deg,var(--hi-soft),transparent 70%)}
.kit-preview{position:sticky;top:110px;aspect-ratio:16/10.5;background:var(--ink);border-radius:6px;overflow:hidden;box-shadow:10px 10px 0 var(--teal)}
.kit-preview .pane{position:absolute;inset:0;opacity:0;transition:opacity .5s var(--ease);display:flex;flex-direction:column}
.kit-preview .pane.on{opacity:1}
.kit-preview .pane img{width:100%;height:100%;object-fit:cover}
.kit-preview .cap{position:absolute;left:0;right:0;bottom:0;padding:18px 22px;background:linear-gradient(transparent,rgba(10,18,24,.85));color:#fff;font-size:14px;display:flex;justify-content:space-between;gap:12px}
.kit-preview .cap b{font-family:var(--serif);font-weight:400;font-size:22px}
.mock{flex:1;background:var(--card);margin:22px;border-radius:4px;padding:26px;display:flex;flex-direction:column;gap:12px;overflow:hidden}
.mock .mh{font-family:var(--serif);font-size:24px;line-height:1.1}
.mock .q{border:1px solid var(--rule);border-radius:4px;padding:12px 14px;font-size:14px;display:flex;justify-content:space-between;gap:10px;align-items:center}
.mock .q em{font-style:normal;font-family:var(--mono);font-size:11px;color:var(--teal-deep);background:var(--teal-wash);padding:3px 8px;border-radius:20px;white-space:nowrap}
.mock .blank{display:inline-block;width:80px;border-bottom:1.5px solid var(--ink);margin-inline:4px}
.mock .row{display:flex;gap:10px}
.mock .chip{font-family:var(--mono);font-size:11px;padding:5px 9px;border:1px solid var(--rule);border-radius:20px;color:var(--ink-2)}
@media (max-width:900px){.kit-board{grid-template-columns:1fr}.kit-preview{position:relative;top:0;order:-1}}

/* ── people (roles) ───────────────────────────── */
.people{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1.5px solid var(--ink);background:var(--card)}
.p-card{padding:32px 26px 28px;display:flex;flex-direction:column;min-height:420px;position:relative;transition:background .3s;overflow:hidden}
.p-card+.p-card{border-inline-start:1px solid var(--rule)}
.p-card:hover{background:var(--paper)}
.p-card .who{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted)}
.p-card h3{font-family:var(--serif);font-weight:400;font-size:clamp(30px,2.8vw,42px);line-height:1;margin:18px 0 14px}
.p-card p{font-size:15.5px;color:var(--ink-2)}
.p-card .say{margin-top:auto;padding-top:28px;font-family:var(--hand);font-size:19px;line-height:1.2;color:var(--pencil);transform:rotate(-1.5deg)}
.p-card .go{margin-top:18px;font-weight:600;font-size:15px;display:flex;align-items:center;gap:8px}
.p-card .go::after{content:"→";transition:transform .25s var(--ease)}
.p-card:hover .go::after{transform:translateX(5px)}
.p-card .glyph{position:absolute;inset-inline-end:-18px;top:14px;font-family:var(--serif);font-style:italic;font-size:150px;line-height:1;color:var(--paper-2);pointer-events:none;transition:color .3s}
.p-card:hover .glyph{color:var(--hi-soft)}
.p-card>*:not(.glyph){position:relative}
@media (max-width:980px){.people{grid-template-columns:repeat(2,1fr)}.p-card:nth-child(3){border-inline-start:0}.p-card:nth-child(n+3){border-top:1px solid var(--rule)}.p-card{min-height:360px}}
@media (max-width:560px){.people{grid-template-columns:1fr}.p-card+.p-card{border-inline-start:0;border-top:1px solid var(--rule)}.p-card{min-height:0}}

/* ── chalkboard (SK) ──────────────────────────── */
.board{background:var(--board);color:var(--chalk);position:relative;overflow:hidden}
.board::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:radial-gradient(1200px 500px at 15% 0%,rgba(255,255,255,.06),transparent 60%),radial-gradient(900px 600px at 100% 100%,rgba(11,140,126,.22),transparent 60%)}
.board .kicker{color:var(--chalk-dim)}.board .kicker b{color:#7FE0CF}
.board .lede{color:var(--chalk-dim)}
.board .hl{background-image:linear-gradient(100deg,transparent 0 .3em,rgba(127,224,207,.35) .3em calc(100% - .2em),transparent calc(100% - .2em))}
.sk-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(36px,6vw,90px);align-items:center;position:relative}
.sk-points{list-style:none;margin-top:36px;display:grid;gap:2px}
.sk-points li{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:14px 0;border-top:1px dashed rgba(232,240,235,.2);font-size:16px}
.sk-points li::before{content:"✳";color:#7FE0CF}
.sk-points b{color:var(--chalk);font-weight:600}
.sk-points span{color:var(--chalk-dim)}
.chat{background:var(--board-2);border:1px solid rgba(232,240,235,.14);border-radius:10px;padding:22px;box-shadow:0 40px 80px -30px rgba(0,0,0,.55);position:relative}
.chat-top{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid rgba(232,240,235,.12);margin-bottom:18px}
.sk-face{width:44px;height:44px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#9FF0DF,#0B8C7E 70%);display:grid;place-items:center;font-family:var(--serif);font-size:22px;color:var(--board);flex:none;box-shadow:0 0 0 4px rgba(127,224,207,.15)}
.chat-top b{display:block;font-size:15px}
.chat-top small{font-family:var(--mono);font-size:11px;color:var(--chalk-dim);letter-spacing:.06em}
.chat-top .role{margin-inline-start:auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;padding:5px 10px;border:1px solid rgba(232,240,235,.25);border-radius:20px}
.msg{max-width:86%;padding:12px 16px;border-radius:14px;font-size:15px;line-height:1.45;margin-bottom:10px;opacity:0;transform:translateY(8px);transition:.5s var(--ease)}
.chat.in .msg{opacity:1;transform:none}
.chat.in .msg:nth-of-type(2){transition-delay:.5s}.chat.in .msg:nth-of-type(3){transition-delay:1.1s}.chat.in .msg:nth-of-type(4){transition-delay:1.7s}
.msg.me{margin-inline-start:auto;background:var(--chalk);color:var(--board);border-end-end-radius:3px}
.msg.sk{background:rgba(232,240,235,.07);border:1px solid rgba(232,240,235,.12);border-end-start-radius:3px}
.msg.sk .chalk-card{margin-top:10px;display:flex;gap:10px;align-items:center;background:rgba(0,0,0,.18);border-radius:8px;padding:10px;font-size:13px}
.msg.sk .chalk-card i{font-style:normal;font-family:var(--mono);font-size:10.5px;color:#7FE0CF;margin-inline-start:auto}
.talk{display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(232,240,235,.12)}
.mic{width:52px;height:52px;border-radius:50%;background:#7FE0CF;color:var(--board);display:grid;place-items:center;position:relative;flex:none}
.mic::before,.mic::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid #7FE0CF;animation:ring 2.4s ease-out infinite}
.mic::after{animation-delay:1.2s}
@keyframes ring{from{transform:scale(1);opacity:.7}to{transform:scale(1.8);opacity:0}}
.talk small{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--chalk-dim)}
.talk b{display:block;font-size:15px}
.chalk-note{font-family:var(--hand);color:#F6D646;font-size:20px;position:absolute;transform:rotate(-5deg)}
@media (max-width:900px){.sk-grid{grid-template-columns:1fr}}

/* ── loop ─────────────────────────────────────── */
.loop{position:relative}
.loop-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;z-index:1}
.loop-step{padding:0 18px 0 0}
.loop-step .dot{width:58px;height:58px;border-radius:50%;border:1.5px solid var(--ink);background:var(--card);display:grid;place-items:center;font-family:var(--serif);font-size:26px;margin-bottom:26px;transition:background .3s,transform .3s var(--ease)}
.loop-step:hover .dot{background:var(--hi);transform:rotate(-8deg) scale(1.06)}
.loop-step h3{font-family:var(--serif);font-weight:400;font-size:34px;line-height:1;margin-bottom:10px}
.loop-step p{font-size:15.5px;color:var(--ink-2);max-width:24ch}
.loop-step .who{display:block;margin-top:14px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--teal-deep)}
.loop svg.path{position:absolute;top:28px;left:0;width:100%;height:60px;z-index:0;overflow:visible}
.loop svg.path path{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-dasharray:6 7}
.loop .back{margin-top:42px;display:flex;align-items:center;gap:14px;font-family:var(--hand);color:var(--pencil);font-size:21px}
@media (max-width:900px){
  .loop-steps{grid-template-columns:1fr;gap:28px}
  .loop-step{display:grid;grid-template-columns:58px 1fr;gap:0 22px;padding:0}
  .loop-step .dot{grid-row:span 3;margin:0}
  .loop svg.path{display:none}
}

/* ── video ────────────────────────────────────── */
.film{position:relative;border-radius:6px;overflow:hidden;background:var(--ink);aspect-ratio:16/9;box-shadow:12px 12px 0 var(--hi);cursor:pointer;border:1.5px solid var(--ink)}
.film img,.film video{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease),opacity .4s}
.film:hover img{transform:scale(1.03)}
.film .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:16px;color:#fff;background:linear-gradient(180deg,rgba(10,18,24,.1),rgba(10,18,24,.55))}
.film .play i{width:84px;height:84px;border-radius:50%;background:var(--paper);display:grid;place-items:center;box-shadow:0 0 0 10px rgba(244,239,230,.22);transition:transform .3s var(--ease)}
.film:hover .play i{transform:scale(1.08)}
.film .play i svg{width:30px;height:30px;margin-inline-start:4px;fill:var(--ink)}
.film .meta{position:absolute;left:24px;bottom:20px;right:24px;display:flex;justify-content:space-between;align-items:end;color:#fff;gap:16px}
.film .meta b{font-family:var(--serif);font-weight:400;font-size:clamp(22px,2.4vw,34px);line-height:1}
.film .meta span{font-family:var(--mono);font-size:12px;letter-spacing:.1em;background:rgba(0,0,0,.4);padding:6px 10px;border-radius:3px}
.modal{position:fixed;inset:0;z-index:150;background:rgba(10,16,22,.86);display:grid;place-items:center;padding:20px}
.modal[hidden]{display:none}
.modal .box{width:min(1100px,100%);aspect-ratio:16/9;background:#000;border-radius:6px;overflow:hidden;position:relative}
.modal iframe{width:100%;height:100%;border:0}
.modal .x{position:absolute;top:18px;right:18px;width:46px;height:46px;border-radius:50%;background:var(--paper);font-size:20px;z-index:2}

/* ── band (schools) ───────────────────────────── */
.band{background:var(--teal-deep);color:var(--paper);position:relative;overflow:hidden}
.band .kicker{color:#A8DCD2}.band .kicker b{color:var(--hi)}
.band .lede{color:#CFE7E1}
.band .btn{background:var(--paper);color:var(--ink);border-color:var(--paper);box-shadow:4px 4px 0 var(--hi)}
.band .btn.ghost{background:transparent;color:var(--paper);box-shadow:4px 4px 0 rgba(255,255,255,.25)}
.portal{font-family:var(--mono);font-size:clamp(15px,1.7vw,21px);background:rgba(0,0,0,.2);border:1px solid rgba(255,255,255,.18);border-radius:6px;padding:16px 20px;display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.portal i{font-style:normal;color:#A8DCD2}
.portal b{color:var(--hi);font-weight:500}
.portal .caret{width:2px;height:1.1em;background:var(--hi);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.checks{list-style:none;display:grid;gap:12px;margin-top:28px}
.checks li{display:flex;gap:12px;align-items:baseline}
.checks li::before{content:"✓";font-family:var(--hand);font-size:22px;line-height:1;color:var(--hi)}
.light-checks li::before{color:var(--teal)}

/* ── stats / proof ────────────────────────────── */
.stat{border-top:1.5px solid var(--ink);padding-top:18px}
.stat b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(54px,6vw,88px);line-height:.9}
.stat span{font-size:15px;color:var(--ink-2);display:block;margin-top:10px;max-width:26ch}

/* ── library shelf ────────────────────────────── */
.shelf{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.spine-card{border-radius:4px;overflow:hidden;background:var(--card);border:1px solid var(--rule);transition:transform .35s var(--ease),box-shadow .35s}
.spine-card:hover{transform:translateY(-6px);box-shadow:0 24px 40px -24px rgba(60,45,20,.45)}
.spine-card .cover{aspect-ratio:16/10;background:var(--paper-2) center/cover;position:relative}
.spine-card .cover .tagc{position:absolute;top:12px;inset-inline-start:12px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;background:var(--card);padding:4px 8px;border-radius:2px}
.spine-card .body{padding:18px 20px 20px}
.spine-card h4{font-family:var(--serif);font-weight:400;font-size:24px;line-height:1.05}
.spine-card p{font-size:14px;color:var(--muted);margin-top:6px}
.book-cover{aspect-ratio:3/4;border-radius:3px 8px 8px 3px;padding:26px 22px;color:#fff;display:flex;flex-direction:column;position:relative;overflow:hidden;box-shadow:inset 8px 0 0 rgba(0,0,0,.18),0 20px 30px -20px rgba(0,0,0,.5)}
.book-cover .bk{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;opacity:.8}
.book-cover h4{font-family:var(--serif);font-weight:400;font-size:34px;line-height:1;margin-top:auto}
.book-cover small{font-size:13px;opacity:.85;margin-top:8px}
@media (max-width:980px){.shelf{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.shelf{grid-template-columns:1fr}}

/* ── pricing ──────────────────────────────────── */
.toggle{display:inline-flex;border:1.5px solid var(--ink);border-radius:40px;padding:4px;background:var(--card)}
.toggle button{padding:9px 18px;border-radius:40px;font-weight:600;font-size:14px}
.toggle button[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.toggle button small{font-family:var(--mono);font-weight:400;font-size:11px;color:var(--teal);margin-inline-start:6px}
.toggle button[aria-pressed=true] small{color:var(--hi)}
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.plan{background:var(--card);border:1px solid var(--rule);border-radius:4px;padding:30px 28px;display:flex;flex-direction:column}
.plan.pick{border:1.5px solid var(--ink);box-shadow:6px 6px 0 var(--teal);position:relative}
.plan.pick::before{content:"Most teachers start here";position:absolute;top:-14px;inset-inline-start:24px;font-family:var(--hand);font-size:17px;color:var(--pencil);background:var(--paper);padding:0 8px}
.plan .pn{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.plan .price{font-family:var(--serif);font-size:72px;line-height:1;margin:18px 0 4px;display:flex;align-items:baseline;gap:6px}
.plan .price small{font-family:var(--sans);font-size:15px;color:var(--muted)}
.plan .sub{font-size:14px;color:var(--muted);min-height:22px}
.plan ul{list-style:none;margin:24px 0 28px;display:grid;gap:10px;font-size:15.5px}
.plan li{display:flex;gap:10px;align-items:baseline}
.plan li::before{content:"✓";color:var(--teal);font-weight:700}
.plan .btn{margin-top:auto;justify-content:center}
.plan-note{font-size:14px;color:var(--muted);margin-top:24px}
.table-wrap{overflow-x:auto;border:1.5px solid var(--ink);border-radius:4px;background:var(--card)}
table.cmp{width:100%;border-collapse:collapse;font-size:15px;min-width:720px}
table.cmp th,table.cmp td{padding:14px 18px;text-align:start;border-bottom:1px solid var(--rule)}
table.cmp thead th{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500;background:var(--paper)}
table.cmp tbody th{font-weight:500}
table.cmp td{font-variant-numeric:tabular-nums}
table.cmp tr:last-child>*{border-bottom:0}
@media (max-width:980px){.plans{grid-template-columns:1fr;max-width:520px}}

/* ── faq ──────────────────────────────────────── */
.faq{border-top:1.5px solid var(--ink)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{list-style:none;cursor:pointer;padding:22px 44px 22px 0;font-family:var(--serif);font-size:clamp(22px,2vw,28px);line-height:1.15;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;inset-inline-end:4px;top:18px;font-family:var(--sans);font-size:28px;font-weight:300;transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 24px;color:var(--ink-2);max-width:70ch}

/* ── role-page hero ───────────────────────────── */
.role-hero{padding-block:clamp(40px,7vw,96px) clamp(60px,8vw,110px);position:relative;overflow:hidden;isolation:isolate}
.role-hero .crumb{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--muted)}
.role-hero .crumb a:hover{color:var(--ink)}
.role-hero h1{font-size:clamp(52px,8vw,124px);margin:24px 0 26px;max-width:12ch}
.role-hero .big-glyph{position:absolute;inset-inline-end:-2vw;top:-4vw;font-family:var(--serif);font-style:italic;font-size:clamp(260px,40vw,620px);line-height:.8;color:var(--paper-2);z-index:-1;user-select:none}
.role-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(32px,5vw,72px);align-items:center}
@media (max-width:940px){.role-grid{grid-template-columns:1fr}}

/* day timeline */
.day{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1.5px solid var(--ink)}
.day>div{padding:28px 26px 0 0}
.day>div+div{padding-inline-start:26px;border-inline-start:1px solid var(--rule)}
.day .time{font-family:var(--mono);font-size:12px;color:var(--pencil);letter-spacing:.1em}
.day h3{font-family:var(--serif);font-weight:400;font-size:32px;line-height:1.05;margin:12px 0 10px}
.day p{color:var(--ink-2);font-size:16px}
@media (max-width:820px){.day{grid-template-columns:1fr}.day>div+div{padding-inline-start:0;border-inline-start:0;border-top:1px solid var(--rule)}.day>div{padding:24px 0}}

/* screen mock (role pages) */
.screen{background:var(--card);border:1.5px solid var(--ink);border-radius:8px;box-shadow:10px 10px 0 var(--ink);overflow:hidden}
.screen .bar{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid var(--rule);background:var(--paper)}
.screen .bar i{width:9px;height:9px;border-radius:50%;background:var(--rule)}
.screen .bar span{margin-inline-start:10px;font-family:var(--mono);font-size:11px;color:var(--muted)}
.screen .in-s{padding:22px;display:grid;gap:12px}
.s-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--rule);border-radius:5px;font-size:14px;background:#fff}
.s-row b{font-weight:600}
.s-row small{display:block;font-size:12px;color:var(--muted)}
.pill{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;padding:4px 9px;border-radius:20px;background:var(--teal-wash);color:var(--teal-deep);white-space:nowrap}
.pill.warn{background:#FBE3DC;color:#A63A22}
.pill.hi{background:var(--hi-soft);color:#7A5B00}
.s-title{font-family:var(--serif);font-size:26px;line-height:1.1}
.bars{display:flex;align-items:end;gap:8px;height:90px;padding:6px 4px 0;border-bottom:1px solid var(--rule)}
.bars i{flex:1;background:var(--teal);border-radius:2px 2px 0 0;opacity:.85}
.bars i:nth-child(3n){background:var(--hi)}
.meter{height:8px;border-radius:8px;background:var(--paper-2);overflow:hidden}
.meter i{display:block;height:100%;background:var(--teal);border-radius:8px}

/* quote */
.quote{font-family:var(--serif);font-size:clamp(30px,3.6vw,52px);line-height:1.1;max-width:22ch}
.quote::before{content:"“";color:var(--teal)}
.quote::after{content:"”";color:var(--teal)}
.quote-by{margin-top:22px;display:flex;align-items:center;gap:14px;font-size:15px;color:var(--ink-2)}
.quote-by img{width:52px;height:52px;border-radius:50%;object-fit:cover}

/* final CTA */
.final{text-align:center;padding-block:clamp(90px,12vw,170px);position:relative;overflow:hidden}
.final h2{font-size:clamp(48px,8vw,128px);max-width:14ch;margin:20px auto 30px}
.final .actions{justify-content:center}
.final .kicker{justify-content:center}
.final .kicker::after{display:none}
.final .hand{margin-top:30px}

/* ── footer ───────────────────────────────────── */
.site-foot{background:var(--ink);color:#C7CCD1;padding-block:72px 36px;font-size:15px;position:relative}
.foot-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:40px}
.foot-brand .brand .word{color:var(--paper)}
.foot-brand p{margin-top:18px;max-width:34ch;color:#9AA3AC}
.foot-col h5{font-family:var(--mono);font-weight:500;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#7F8A95;margin-bottom:16px}
.foot-col a{display:block;padding:5px 0;color:#DDE1E4}
.foot-col a:hover{color:var(--hi)}
.programs{margin-top:56px;padding-top:28px;border-top:1px solid #2A3643;display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;font-size:13.5px;color:#9AA3AC}
.programs b{font-weight:600;color:#DDE1E4}
.programs .sep{width:4px;height:4px;border-radius:50%;background:#3A4654}
.legal{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#7F8A95}
.legal a:hover{color:var(--hi)}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}}

/* ── scroll reveal ────────────────────────────── */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

/* utilities */
.center{text-align:center}
.mt-s{margin-top:16px}.mt-m{margin-top:32px}.mt-l{margin-top:56px}
.muted{color:var(--muted)}
.paper-2{background:var(--paper-2)}
.card-bg{background:var(--card)}
.divider{height:1.5px;background:var(--ink)}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,5vw,80px);align-items:center}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ── early-access badge ───────────────────────── */
.ea{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding:6px 11px;border-radius:30px;border:1px solid currentColor;color:var(--pencil);background:color-mix(in srgb,var(--pencil) 8%,transparent)}
.ea::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.board .ea{color:var(--hi);background:rgba(246,214,70,.08)}

/* ── ready-made kits ──────────────────────────── */
.allow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1.5px solid var(--ink);border-radius:4px;background:var(--card)}
.allow div{padding:20px 18px;text-align:center}
.allow div+div{border-inline-start:1px solid var(--rule)}
.allow b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(44px,4.6vw,64px);line-height:1}
.allow span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.allow div.hi-cell{background:var(--hi-soft)}
@media (max-width:700px){.allow{grid-template-columns:repeat(2,1fr)}.allow div+div{border-inline-start:0}.allow div{border-top:1px solid var(--rule)}.allow div:nth-child(-n+2){border-top:0}.allow div:nth-child(even){border-inline-start:1px solid var(--rule)}.allow div:last-child{grid-column:1/-1}}
.steps3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1.5px solid var(--ink)}
.steps3>div{padding:26px 24px 0 0}
.steps3>div+div{padding-inline-start:24px;border-inline-start:1px solid var(--rule)}
.steps3 .n{font-family:var(--serif);font-style:italic;font-size:44px;line-height:1;color:var(--teal)}
.steps3 h3{font-family:var(--serif);font-weight:400;font-size:28px;margin:8px 0}
.steps3 p{color:var(--ink-2);font-size:16px}
@media (max-width:820px){.steps3{grid-template-columns:1fr}.steps3>div+div{padding-inline-start:0;border-inline-start:0;border-top:1px solid var(--rule)}.steps3>div{padding:22px 0}}

/* ── bookshop product ─────────────────────────── */
.product{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(30px,5vw,70px);align-items:center}
.book-3d{position:relative;max-width:340px;margin-inline:auto;width:100%;transform:rotate(-4deg);transition:transform .5s var(--ease)}
.book-3d:hover{transform:rotate(-1deg) translateY(-6px)}
.book-3d .book-cover{box-shadow:inset 10px 0 0 rgba(0,0,0,.2),16px 20px 0 -6px var(--paper-2),18px 22px 0 -5px var(--rule),0 40px 60px -30px rgba(0,0,0,.6)}
.book-3d .book-cover h4{font-size:clamp(40px,4.4vw,56px)}
.badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;padding:7px 12px;border-radius:30px;background:var(--hi-soft);color:#6E5200;border:1px solid #E7C640}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:#C9A300}
.badge.live{background:var(--teal-wash);color:var(--teal-deep);border-color:#9FD4C9}
.badge.live::before{background:var(--teal)}
.price-tag{font-family:var(--serif);font-size:clamp(52px,5vw,72px);line-height:1;display:flex;align-items:baseline;gap:10px;margin:18px 0 6px}
.price-tag small{font-family:var(--sans);font-size:15px;color:var(--muted)}
.includes{list-style:none;display:grid;gap:12px;margin:22px 0 28px}
.includes li{display:grid;grid-template-columns:30px 1fr;gap:10px;align-items:baseline;font-size:16.5px}
.includes li::before{content:"✓";font-family:var(--hand);font-size:22px;color:var(--teal)}
@media (max-width:900px){.product{grid-template-columns:1fr}}

/* ── YouTube channels ─────────────────────────── */
.channels{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.channel{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--rule);border-radius:4px;padding:14px;transition:border-color .2s,transform .25s var(--ease),box-shadow .25s;min-width:0}
.channel:hover{border-color:var(--ink);transform:translateY(-3px);box-shadow:4px 4px 0 var(--ink)}
.channel .yt-ic{width:38px;height:28px;border-radius:8px;background:#D62E2A;color:#fff;display:grid;place-items:center;font-size:11px;flex:none}
.channel>span:last-child{min-width:0}
.channel b{display:block;font-weight:600;font-size:15.5px;line-height:1.2}
.channel small{display:block;font-family:var(--mono);font-size:10.5px;color:var(--muted);overflow-wrap:anywhere}
@media (max-width:1080px){.channels{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:620px){.channels{grid-template-columns:repeat(2,minmax(0,1fr))}.channel{padding:12px 10px;gap:9px}.channel .yt-ic{width:30px;height:24px}}
.board .channel{background:var(--board-2);border-color:rgba(232,240,235,.14);color:var(--chalk)}
.board .channel:hover{border-color:var(--chalk);box-shadow:4px 4px 0 var(--teal)}
.board .channel small{color:var(--chalk-dim)}
.foot-yt{margin-top:48px;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;font-size:14px;color:#9AA3AC}
.foot-yt a{color:#DDE1E4;border-bottom:1px solid #3A4654;padding-bottom:1px}
.foot-yt a:hover{color:var(--hi);border-color:var(--hi)}
.foot-yt+.programs{margin-top:22px}

/* ── SK website assistant ─────────────────────── */
.skw{position:fixed;right:16px;bottom:16px;z-index:140;font-family:var(--sans)}
.skw-face{width:38px;height:38px;border-radius:50%;flex:none;display:grid;place-items:center;font-family:var(--serif);font-size:19px;font-style:italic;color:var(--board);background:radial-gradient(circle at 35% 30%,#9FF0DF,#0B8C7E 72%)}
.skw-fab{display:flex;align-items:center;gap:10px;background:var(--board);color:var(--chalk);border-radius:40px;padding:7px 18px 7px 7px;box-shadow:0 14px 34px -12px rgba(15,42,44,.7),0 0 0 4px rgba(127,224,207,.18);font-weight:600;font-size:15px;transition:transform .25s var(--ease)}
.skw-fab:hover{transform:translateY(-2px)}
.skw.open .skw-fab{display:none}
.skw-panel{position:absolute;right:0;bottom:0;width:min(380px,calc(100vw - 32px));height:min(560px,calc(100vh - 110px));background:var(--board);color:var(--chalk);border-radius:16px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 70px -20px rgba(0,0,0,.55);border:1px solid rgba(232,240,235,.14)}
.skw-panel[hidden]{display:none}
.skw-head{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid rgba(232,240,235,.12)}
.skw-head b{display:block;font-size:15.5px}
.skw-head small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--chalk-dim)}
.skw-x{margin-inline-start:auto;width:34px;height:34px;border-radius:50%;background:rgba(232,240,235,.08);color:var(--chalk)}
.skw-log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.skw-msg{max-width:88%;padding:10px 14px;border-radius:14px;font-size:14.5px;line-height:1.5;animation:rise .35s var(--ease) both}
.skw-msg a{color:#7FE0CF;text-decoration:underline;text-underline-offset:2px}
.skw-msg.sk{background:rgba(232,240,235,.07);border:1px solid rgba(232,240,235,.12);border-end-start-radius:4px}
.skw-msg.me{align-self:flex-end;background:var(--chalk);color:var(--board);border-end-end-radius:4px}
.skw-msg.typing{display:flex;gap:5px;padding:14px}
.skw-msg.typing i{width:7px;height:7px;border-radius:50%;background:var(--chalk-dim);animation:blink 1s infinite}
.skw-msg.typing i:nth-child(2){animation-delay:.2s}
.skw-msg.typing i:nth-child(3){animation-delay:.4s}
.skw-chips{display:flex;flex-wrap:wrap;gap:6px;padding:0 16px 10px}
.skw-chips:empty{display:none}
.skw-chips button{font-size:13px;font-weight:500;padding:6px 11px;border-radius:30px;border:1px solid rgba(127,224,207,.4);color:#BFF3E8}
.skw-chips button:hover{background:rgba(127,224,207,.12)}
.skw-form{display:flex;gap:8px;padding:12px;border-top:1px solid rgba(232,240,235,.12)}
.skw-form input{flex:1;min-width:0;background:rgba(232,240,235,.07);border:1px solid rgba(232,240,235,.18);border-radius:30px;padding:11px 16px;color:var(--chalk);font:inherit;font-size:15px}
.skw-form input::placeholder{color:var(--chalk-dim)}
.skw-form input:focus{outline:2px solid #7FE0CF;outline-offset:1px}
.skw-mic,.skw-send{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;flex:none}
.skw-send{background:#7FE0CF;color:var(--board);font-weight:700;font-size:18px}
.skw-mic{background:rgba(232,240,235,.1);color:var(--chalk);touch-action:none}
.skw-mic.on{background:var(--pencil);color:#fff;box-shadow:0 0 0 6px rgba(212,71,44,.25)}
.skw-foot{font-size:11.5px;color:var(--chalk-dim);padding:0 16px 12px;text-align:center}
@media (max-width:560px){.skw-fab .skw-label{display:none}.skw-fab{padding:7px}.skw-panel{height:min(560px,calc(100vh - 90px))}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important;transition-delay:0s!important;scroll-behavior:auto!important}
  .reveal,.rise{opacity:1;transform:none}
}

/* ── language switcher + footer notices (production) ── */
.lang{position:relative}
.lang>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border:1px solid var(--rule);border-radius:3px;font-size:14px;color:var(--ink-2);background:var(--card)}
.lang>summary::-webkit-details-marker{display:none}
.lang>summary:hover,.lang[open]>summary{color:var(--ink);border-color:var(--ink)}
.lang svg{width:15px;height:15px}
.lang ul{position:absolute;z-index:60;top:calc(100% + 8px);inset-inline-end:0;min-width:220px;list-style:none;padding:6px;background:var(--card);border:1.5px solid var(--ink);border-radius:4px;box-shadow:5px 5px 0 var(--ink)}
.lang a{display:block;padding:7px 10px;border-radius:3px;font-size:14.5px}
.lang a:hover{background:var(--hi-soft)}
.lang a[aria-current]{font-weight:600}
@media (max-width:1180px){.nav-end .lang{display:none}}
.foot-note{margin-top:14px;font-size:13px;color:#9AA3AC;max-width:90ch}
.foot-note a{color:#DDE1E4;border-bottom:1px solid #3A4654}
.foot-langs{margin-top:18px;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13.5px}
.foot-langs a{color:#C7CCD1}
.foot-langs a:hover{color:var(--hi)}
.drawer .d-langs{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:22px;font-size:15px}