@font-face{font-family:Fraunces;font-style:normal;font-weight:100 900;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/fb526027db1fc1ae-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:Fraunces;font-style:normal;font-weight:100 900;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/4da3161b738b07dd-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Fraunces;font-style:normal;font-weight:100 900;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/af4bf8399d1aacdf-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Fraunces Fallback;src:local("Times New Roman");ascent-override:84.71%;descent-override:22.09%;line-gap-override:0.00%;size-adjust:115.45%}.__className_544a74{font-family:Fraunces,Fraunces Fallback;font-style:normal}.__variable_544a74{--font-serif:"Fraunces","Fraunces Fallback"}@font-face{font-family:Outfit;font-style:normal;font-weight:100 900;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/98848575513c9742-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Outfit;font-style:normal;font-weight:100 900;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/7b0b24f36b1a6d0b-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Outfit Fallback;src:local("Arial");ascent-override:100.18%;descent-override:26.05%;line-gap-override:0.00%;size-adjust:99.82%}.__className_7eb3a2{font-family:Outfit,Outfit Fallback;font-style:normal}.__variable_7eb3a2{--font-sans:"Outfit","Outfit Fallback"}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/58f386aa6b1a2a92-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/011e180705008d6f-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/7ba5fb2a8c88521c-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/92eeb95d069020cc-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/d3ebbfd689654d3a-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/ef4d5661765d0e49-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/d29838c109ef09b4-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/e40af3453d7c920a-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/99dcf268bda04fe5-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/dc_teachers_tutorial/_next/static/media/98e207f02528a563-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:IBM Plex Mono Fallback;src:local("Arial");ascent-override:76.16%;descent-override:20.43%;line-gap-override:0.00%;size-adjust:134.59%}.__className_754218{font-family:IBM Plex Mono,IBM Plex Mono Fallback;font-style:normal}.__variable_754218{--font-mono:"IBM Plex Mono","IBM Plex Mono Fallback"}:root{--ink:#07080d;--ink-2:#10121a;--ink-3:#181b26;--paper:#f4f0e8;--paper-2:#ebe4d6;--paper-3:#fffdf8;--violet:#6c47ff;--violet-2:#8d74ff;--violet-deep:#3a1fd0;--cyan:#3ee0c5;--amber:#f5b942;--rose:#ff4d6d;--line:rgba(108,71,255,0.28);--muted:#8b90a5;--text:#e8e6df;--text-dim:#a8adbf;--shadow:0 30px 80px rgba(0,0,0,0.35);--radius:18px;--nav-h:76px;--max:1180px;--serif:var(--font-serif),"Fraunces",Georgia,serif;--sans:var(--font-sans),"Outfit",system-ui,sans-serif;--mono:var(--font-mono),"IBM Plex Mono",ui-monospace,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body,html{margin:0;padding:0}body{font-family:var(--sans);background:var(--ink);color:var(--text);line-height:1.6;min-height:100vh;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font-family:inherit;cursor:pointer}.grain{z-index:80;opacity:.07;mix-blend-mode:overlay;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='.9'/></svg>")}.grain,.grid-bg{position:fixed;inset:0;pointer-events:none}.grid-bg{z-index:0;background-image:linear-gradient(rgba(108,71,255,.06) 1px,transparent 0),linear-gradient(90deg,rgba(108,71,255,.06) 1px,transparent 0);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse at 50% 0,black 20%,transparent 75%);mask-image:radial-gradient(ellipse at 50% 0,black 20%,transparent 75%)}.wrap{width:min(var(--max),calc(100% - 40px));margin:0 auto;position:relative;z-index:1}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;height:var(--nav-h);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:rgba(7,8,13,.78);border-bottom:1px solid rgba(255,255,255,.06)}.nav,.nav-inner{display:flex;align-items:center}.nav-inner{justify-content:space-between;gap:24px;width:min(1280px,calc(100% - 40px));margin:0 auto}.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:-.03em}.brand img{height:34px;width:auto;filter:drop-shadow(0 0 12px rgba(108,71,255,.45))}.brand span{font-size:13px;color:var(--text-dim);font-weight:500;letter-spacing:.14em;text-transform:uppercase}.nav-links{display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.nav-links a{font-size:13px;color:var(--text-dim);padding:8px 10px;border-radius:999px;transition:.2s ease}.nav-links a.active,.nav-links a:hover{color:white;background:rgba(108,71,255,.18)}.nav-cta{background:var(--violet)!important;color:white!important;padding:8px 14px!important;font-weight:600}.menu-btn{display:none;background:transparent;border:1px solid rgba(255,255,255,.14);color:white;border-radius:10px;padding:8px 10px}.hero{position:relative;min-height:calc(100vh - var(--nav-h));display:grid;align-items:flex-end;padding:48px 0 72px;overflow:hidden}.hero-media{position:absolute;inset:0;z-index:0}.hero-media img{width:100%;height:100%;object-fit:cover;filter:saturate(1.1) contrast(1.05)}.hero-media:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,8,13,.35),rgba(7,8,13,.55) 42%,rgba(7,8,13,.94)),linear-gradient(90deg,rgba(7,8,13,.55),transparent 55%)}.hero-content{position:relative;z-index:1}.kicker{display:inline-flex;align-items:center;gap:10px;color:var(--violet-2);font-size:12px;letter-spacing:.22em;text-transform:uppercase;font-weight:600}.kicker:before{content:"";width:28px;height:2px;background:var(--violet)}h1,h2,h3,h4{font-family:var(--serif);letter-spacing:-.03em;line-height:1.08;margin:0}.hero h1{font-size:clamp(44px,7.2vw,92px);color:white;max-width:14ch;margin:18px 0 22px;font-weight:600}.hero h1 em{font-style:italic;color:var(--violet-2)}.lede{max-width:46ch;font-size:18px;color:var(--text-dim)}.hero .lede{color:#d8dbe8}.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:13px 20px;font-weight:600;font-size:14px;border:1px solid transparent;transition:transform .2s ease,background .2s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--violet);color:white}.btn-ghost{background:transparent;border-color:rgba(255,255,255,.16);color:white}.stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:1px;gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);margin-top:56px;border-radius:16px;overflow:hidden}.stat{background:rgba(10,12,18,.88);padding:22px 20px;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.stat b{display:block;font-size:28px;font-family:var(--serif);color:white}.stat span{color:var(--muted);font-size:12px;letter-spacing:.12em;text-transform:uppercase}.section{padding:88px 0;position:relative;z-index:1}.section.paper{background:var(--paper);color:#16141c}.section.paper .lede,.section.paper .muted{color:#5c5868}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:36px}.section-head h2{font-size:clamp(32px,4vw,52px);max-width:16ch}.section.paper h2{color:#120f1c}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}.card{background:var(--ink-2);border:1px solid rgba(255,255,255,.07);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;min-height:100%;transition:transform .25s ease,border-color .25s ease}.card:hover{transform:translateY(-4px);border-color:rgba(108,71,255,.5)}.card-img{aspect-ratio:16/10;overflow:hidden;background:#efe8da}.card-img img{width:100%;height:100%;object-fit:contain}.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1}.card-body h3{font-size:26px}.idx{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--violet-2);text-transform:uppercase}.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto}.chip{font-size:11px;letter-spacing:.08em;text-transform:uppercase;border:1px solid rgba(255,255,255,.12);padding:5px 8px;border-radius:999px;color:var(--text-dim)}.paper-card{background:var(--paper-3);border:1px solid rgba(18,15,28,.08);border-radius:var(--radius);overflow:hidden;box-shadow:0 20px 50px rgba(18,15,28,.06)}.paper-card .card-body h3{color:#120f1c}.paper-card .chip{border-color:rgba(18,15,28,.12);color:#5c5868}.split{display:grid;grid-template-columns:1.05fr .95fr;grid-gap:48px;gap:48px;align-items:center}.split.reverse{grid-template-columns:.95fr 1.05fr}.split.reverse .copy{order:2}.frame{position:relative;border-radius:24px;overflow:hidden;border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow)}.frame img{width:100%;height:100%;object-fit:cover}.frame.paper-frame{border-color:rgba(18,15,28,.1);background:white}.caption,.frame figcaption{font-size:13px;color:var(--muted);margin-top:10px}.section.paper .caption{color:#6b6678}.page-hero{padding:72px 0 40px;position:relative}.page-hero h1{font-size:clamp(40px,6vw,76px);max-width:16ch;margin:14px 0 18px}.meta-bar{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 8px}.meta{border:1px solid var(--line);color:var(--violet-2);border-radius:999px;padding:7px 12px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;font-weight:600}.meta,.section.paper .meta{background:rgba(108,71,255,.1)}.section.paper .meta{color:var(--violet-deep);border-color:rgba(108,71,255,.25)}.callout{border-radius:16px;padding:18px 20px;margin:22px 0;border:1px solid transparent}.callout strong{display:block;margin-bottom:4px;font-family:var(--sans);letter-spacing:.04em;font-size:13px;text-transform:uppercase}.callout.teacher{background:rgba(108,71,255,.12);border-color:rgba(108,71,255,.32)}.section.paper .callout.teacher{background:#ece6ff;border-color:#cfc4ff}.callout.tip{background:rgba(62,224,197,.1);border-color:rgba(62,224,197,.28)}.section.paper .callout.tip{background:#e7faf5;border-color:#b6eadf}.callout.warn{background:rgba(245,185,66,.12);border-color:rgba(245,185,66,.32)}.section.paper .callout.warn{background:#fff4d8;border-color:#f3d48a}.callout.safety{background:rgba(255,77,109,.1);border-color:rgba(255,77,109,.3)}.section.paper .callout.safety{background:#ffe6eb;border-color:#ffb3c1}.prose p{margin:0 0 14px;color:var(--text-dim)}.section.paper .prose p{color:#3d3a48}.prose ol,.prose ul{margin:0 0 16px;padding-left:18px;color:var(--text-dim)}.section.paper .prose ol,.section.paper .prose ul{color:#3d3a48}.prose li{margin:6px 0}.prose h2{font-size:36px;margin:8px 0 14px}.prose h3{font-size:24px;margin:28px 0 10px}.table-wrap{overflow-x:auto;margin:18px 0 28px;border-radius:14px;border:1px solid rgba(255,255,255,.08)}.section.paper .table-wrap{border-color:rgba(18,15,28,.1)}table{width:100%;border-collapse:collapse;font-size:14px}td,th{text-align:left;padding:12px 14px;vertical-align:top}th{font-size:11px;letter-spacing:.12em;text-transform:uppercase;background:rgba(108,71,255,.18);color:white}.section.paper th{background:#1e2a6b;color:white}td{border-top:1px solid rgba(255,255,255,.06)}.section.paper td{border-top:1px solid rgba(18,15,28,.08);color:#2b2835}tr:nth-child(2n) td{background:rgba(255,255,255,.02)}.section.paper tr:nth-child(2n) td{background:#f7f3ea}.code{position:relative;background:#0b0d14;border:1px solid rgba(255,255,255,.08);border-radius:16px;margin:16px 0 28px;overflow:hidden}.code header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.06);color:var(--muted);font-size:12px}.code header,.code pre{font-family:var(--mono)}.code pre{margin:0;padding:16px 18px 20px;overflow-x:auto;font-size:13px;line-height:1.65;color:#d7dbe8}.copy-btn{background:transparent;color:var(--violet-2);border:1px solid rgba(108,71,255,.35);border-radius:999px;padding:4px 10px;font-size:11px}.levels{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:12px;gap:12px;margin:18px 0 28px}.level{border-radius:14px;padding:16px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03)}.section.paper .level{background:white;border-color:rgba(18,15,28,.08)}.level b{display:block;margin-bottom:6px}.toc{display:grid;grid-gap:8px;gap:8px}.toc a{display:flex;justify-content:space-between;gap:16px;padding:14px 16px;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:rgba(255,255,255,.03)}.toc a:hover{border-color:var(--violet)}.toc small{color:var(--muted)}.timeline{display:grid;grid-gap:0;gap:0}.tl{display:grid;grid-template-columns:140px 1fr;grid-gap:18px;gap:18px;padding:18px 0;border-top:1px solid rgba(255,255,255,.08)}.section.paper .tl{border-top-color:rgba(18,15,28,.1)}.tl .when{font-family:var(--mono);font-size:12px;color:var(--violet-2);letter-spacing:.08em;text-transform:uppercase}.partners{flex-wrap:wrap;gap:16px;justify-content:space-between}.partner-chip,.partners{display:flex;align-items:center}.partner-chip{background:white;border-radius:14px;height:72px;padding:10px 14px;justify-content:center;min-width:120px;flex:1 1}.partner-chip img{max-height:52px;width:auto;object-fit:contain}.footer{border-top:1px solid rgba(255,255,255,.08);padding:40px 0 28px;color:var(--muted);font-size:13px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-gap:28px;gap:28px;margin-bottom:28px}.eu{background:white;border-radius:12px;padding:10px 12px;display:inline-flex;height:54px}.eu img{height:100%;width:auto}.two{grid-template-columns:1fr 1fr;grid-gap:18px;gap:18px}.three,.two{display:grid}.three{grid-template-columns:repeat(3,1fr);grid-gap:16px;gap:16px}.icon-tile{padding:20px;border-radius:16px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07)}.section.paper .icon-tile{background:white;border-color:rgba(18,15,28,.08)}.icon-tile h3{font-size:22px;margin-bottom:8px}.flow{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:12px;gap:12px}.flow-step{padding:18px;border-radius:16px;background:linear-gradient(180deg,rgba(108,71,255,.16),rgba(255,255,255,.02));border:1px solid var(--line)}.flow-step span{font-family:var(--mono);color:var(--violet-2);font-size:12px}hr.rule{border:0;border-top:1px solid rgba(255,255,255,.08);margin:36px 0}.section.paper hr.rule{border-top-color:rgba(18,15,28,.1)}@media (max-width:980px){.card-grid,.flow,.footer-grid,.levels,.split,.split.reverse,.stats,.three,.tl,.two{grid-template-columns:1fr}.split.reverse .copy{order:0}.nav-links{display:none}.nav-links.open{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:rgba(7,8,13,.96);padding:16px;border-bottom:1px solid rgba(255,255,255,.08)}.menu-btn{display:block}.section-head{flex-direction:column;align-items:start}}@media print{.copy-btn,.grain,.grid-bg,.hero-actions,.menu-btn,.nav{display:none!important}body{background:white;color:black}.section{padding:24px 0}}::selection{background:var(--violet);color:white}