:root{
  --bg:#F4F6F9;--surface:#fff;--sunk:#EDF0F5;--ink:#16213A;--muted:#535E77;--line:#D6DCE6;
  --navy:#1B2A4A;--navy-2:#24365E;--on-navy:#F3F5FA;--on-navy-muted:#B9C3D8;--gold:#C99A2E;--gold-ink:#7E5E12;--gold-soft:#F7EDD3;
  --green:#1E7A4F;--green-soft:#DFF1E7;--blue:#1F5FA6;--red:#B42318;
  --f-display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;--f-body:"Source Sans 3","Segoe UI",system-ui,sans-serif;--f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D1424;--surface:#141F37;--sunk:#101A2E;--ink:#E9EDF5;--muted:#A9B3C8;--line:#2A3859;
  --navy:#0F1A31;--navy-2:#16223F;--gold:#DDB24E;--gold-ink:#E6C26A;--gold-soft:#2F2914;--green:#5CC495;--green-soft:#11301F;--blue:#8DB8F2;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0D1424;--surface:#141F37;--sunk:#101A2E;--ink:#E9EDF5;--muted:#A9B3C8;--line:#2A3859;--navy:#0F1A31;--navy-2:#16223F;--gold:#DDB24E;--gold-ink:#E6C26A;--gold-soft:#2F2914;--green:#5CC495;--green-soft:#11301F;--blue:#8DB8F2;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 18px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--f-display);line-height:1.1;margin:0;text-wrap:balance;letter-spacing:-.01em}
p{margin:0}
a{color:var(--blue)}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.wrap{max-width:1200px;margin:0 auto;padding-inline:20px}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--gold);color:#1B2A4A;padding:10px 14px;border-radius:8px;font-weight:700}
.skip:focus{left:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.eyebrow{font:500 12.5px/1.2 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--gold-ink);margin-bottom:10px}
.eyebrow.light,.hero .eyebrow{color:var(--gold)}
.lede{font-size:20px;color:var(--on-navy-muted);max-width:62ch}
.lede.dark{color:var(--muted)}
.h2{font-size:clamp(28px,3.6vw,42px);font-weight:800}
.h2.light{color:#fff}
.small{font-size:14.5px;color:var(--muted)}

/* header */
.top{position:sticky;top:0;z-index:50;background:var(--navy);color:var(--on-navy);border-bottom:1px solid rgba(255,255,255,.08)}
.top .wrap{display:flex;align-items:center;gap:18px;min-height:64px;flex-wrap:wrap;padding-block:8px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font:600 19px/1 var(--f-display)}
.brand img{border-radius:8px}
.brand b{color:var(--gold);font-weight:800}
.brand.dark{color:var(--ink)}
.nav{display:flex;gap:2px;flex-wrap:wrap;margin-left:auto}
.nav a{color:var(--on-navy-muted);text-decoration:none;font-size:16px;padding:8px 11px;border-radius:999px}
.nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.acct{display:flex;gap:8px;align-items:center}
.acct .btn{padding:10px 16px;font-size:15.5px}
.menu{position:relative}
.menu>button{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:999px;padding:6px 12px 6px 6px;cursor:pointer;font:600 15.5px/1 var(--f-body)}
.menu .av{width:30px;height:30px;border-radius:50%;background:var(--gold);color:#1B2A4A;display:grid;place-items:center;font:800 13px/1 var(--f-body)}
.menu ul{position:absolute;right:0;top:calc(100% + 8px);list-style:none;margin:0;padding:6px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:12px;min-width:240px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.menu ul[hidden]{display:none}
.menu li a,.menu li button{display:block;width:100%;text-align:left;padding:10px 12px;border-radius:8px;color:var(--ink);text-decoration:none;background:none;border:0;font:inherit;font-size:16px;cursor:pointer}
.menu li a:hover,.menu li button:hover{background:var(--sunk)}
.menu .who{padding:10px 12px;font-size:14px;color:var(--muted);border-bottom:1px solid var(--line);margin-bottom:4px}
@media (max-width:900px){.nav{order:3;width:100%;margin-left:0;overflow-x:auto;flex-wrap:nowrap}.nav a{white-space:nowrap}.acct{margin-left:auto}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:2px solid transparent;border-radius:999px;padding:14px 22px;font:700 17px/1 var(--f-body);cursor:pointer;text-decoration:none;transition:filter .15s}
.btn:hover{filter:brightness(1.07)}
.btn.gold{background:var(--gold);color:#1B2A4A}
.btn.navy{background:var(--navy);color:#fff}
:root[data-theme="dark"] .btn.navy{background:var(--gold);color:#1B2A4A}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.navy{background:var(--gold);color:#1B2A4A}}
.btn.outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.outline:hover{border-color:var(--gold)}
.btn.ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn.link{background:none;color:var(--blue);padding-inline:6px;text-decoration:underline}
.btn.sm{padding:9px 15px;font-size:15px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:26px}

/* hero */
.hero{background:var(--navy);color:var(--on-navy);padding-block:64px 80px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-12%;bottom:-45%;width:720px;height:720px;border-radius:50%;background:radial-gradient(closest-side,rgba(201,154,46,.2),transparent);pointer-events:none}
.hero-in{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(38px,5.4vw,66px);font-weight:800;color:#fff;margin:6px 0 20px}
.hero h1 em{font-style:normal;color:var(--gold)}
.ticks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:8px}
.ticks li{display:flex;gap:10px;align-items:baseline;font-size:17px}
.ticks li::before{content:"";width:15px;height:8px;border-left:2.5px solid var(--gold);border-bottom:2.5px solid var(--gold);transform:rotate(-45deg) translateY(-3px);flex:none}
.mosaic{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tile{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:2px}
.tile b{font:800 40px/1 var(--f-display);color:#fff}
.tile span{color:var(--on-navy-muted);font-size:15.5px}
.tile.t5{grid-column:1 / -1;background:linear-gradient(135deg,rgba(201,154,46,.28),rgba(201,154,46,.08));border-color:rgba(201,154,46,.5)}
.tile.t5 b{font-size:30px}
.pill{align-self:flex-start;font:500 11.5px/1 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;background:var(--gold);color:#1B2A4A !important;padding:5px 9px;border-radius:999px;margin-bottom:8px}
@media (max-width:920px){.hero-in{grid-template-columns:1fr}.hero{padding-block:44px 56px}}

/* strip */
.strip{background:var(--surface);border-bottom:1px solid var(--line)}
.strip-in{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.strip-in div{padding:22px 16px 22px 0}
.strip-in div+div{padding-left:18px;border-left:1px solid var(--line)}
.strip-in b{display:block;font:800 34px/1 var(--f-display)}
.strip-in span{color:var(--muted);font-size:15.5px}
@media (max-width:700px){.strip-in{grid-template-columns:1fr 1fr}.strip-in div:nth-child(3){border-left:0;padding-left:0}}

/* sections */
.sec{padding-block:72px}
.sec.tight{padding-block:40px 0}
.sec.alt{background:var(--surface);border-block:1px solid var(--line)}
.sec-h{max-width:780px;margin-bottom:28px;display:grid;gap:10px}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:28px}}

/* feature course */
.feature{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:32px;background:var(--surface);border:2px solid var(--gold);border-radius:24px;padding:36px;box-shadow:0 30px 70px -40px rgba(27,42,74,.6)}
.f-main h2{font-size:clamp(30px,3.8vw,46px);font-weight:800;margin:14px 0 12px}
.badge{display:inline-block;font:500 12px/1 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;padding:7px 11px;border-radius:999px;background:var(--sunk);color:var(--muted)}
.badge.gold{background:var(--gold);color:#1B2A4A}
.badge.free{background:var(--green-soft);color:var(--green)}
.checks{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:9px}
.checks li{display:flex;gap:11px;align-items:baseline}
.checks li::before{content:"";width:14px;height:8px;border-left:2.5px solid var(--green);border-bottom:2.5px solid var(--green);transform:rotate(-45deg) translateY(-3px);flex:none}
.f-price{display:grid;gap:12px;align-content:center}
.price-card{border:1px solid var(--line);border-radius:14px;padding:16px 18px;display:grid;gap:2px;background:var(--bg)}
.price-card span{font-weight:700;font-size:15.5px}
.price-card em{font-style:normal;font:500 11px/1 var(--f-mono);text-transform:uppercase;letter-spacing:.06em;background:var(--gold-soft);color:var(--gold-ink);padding:4px 7px;border-radius:999px;margin-left:6px;vertical-align:2px}
.price-card b{font:800 30px/1.1 var(--f-display)}
.price-card small{color:var(--muted);font-size:14.5px}
.price-card.rec{border:2px solid var(--gold)}
@media (max-width:900px){.feature{grid-template-columns:1fr;padding:24px}}

/* library */
.filters{display:grid;gap:14px;margin-bottom:10px}
.filters input{width:100%;max-width:560px;font:inherit;padding:13px 16px;border:2px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink)}
.filters input:focus{border-color:var(--navy);outline:3px solid var(--gold);outline-offset:1px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips button{border:1.5px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:9px 15px;font:600 15.5px/1 var(--f-body);cursor:pointer}
.chips button[aria-pressed="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
:root[data-theme="dark"] .chips button[aria-pressed="true"]{background:var(--gold);color:#1B2A4A;border-color:var(--gold)}
.chips button span{font:500 12px/1 var(--f-mono);opacity:.75;margin-left:4px}
.cat{margin-top:44px}
.cat-h{display:flex;justify-content:space-between;align-items:flex-end;gap:14px;flex-wrap:wrap;margin-bottom:16px;border-bottom:1px solid var(--line);padding-bottom:12px}
.cat-h h3{font-size:28px;font-weight:800}
.cat-h p{color:var(--muted);font-size:16.5px}
.price-tag{display:flex;align-items:center;gap:10px;font-weight:700}
.price-tag s{font:700 24px/1 var(--f-display);color:var(--muted);text-decoration-thickness:3px;text-decoration-color:var(--red)}
.price-tag .free-big{font:800 20px/1 var(--f-display);background:var(--green);color:#fff;padding:9px 14px;border-radius:999px;letter-spacing:.04em}
.grid.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:10px;min-width:0;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--gold);transform:translateY(-2px)}
.card-top{display:flex;gap:12px;align-items:center}
.ic{width:46px;height:46px;border-radius:12px;background:var(--navy);color:var(--gold);display:grid;place-items:center;font:800 15px/1 var(--f-display);flex:none}
.card h4{font:800 19px/1.2 var(--f-display);margin:0}
.card p{color:var(--muted);font-size:16px;flex:1}
.card .meta{display:flex;gap:6px;flex-wrap:wrap}
.card .open{margin-top:4px;align-self:flex-start}
.card a.cover{text-decoration:none;color:inherit}
.empty{color:var(--muted);padding:20px 0}

/* paths */
.paths{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.path{border:1px solid var(--line);border-radius:16px;padding:22px;background:var(--bg);display:grid;gap:10px;align-content:start}
.path h3{font-size:22px;font-weight:800}
.path p{color:var(--muted);font-size:16px}
.path ol{margin:6px 0 0;padding-left:22px;display:grid;gap:6px}
.path a{font-weight:600}
@media (max-width:900px){.paths{grid-template-columns:1fr}}

/* apps */
.howto{list-style:none;counter-reset:h;margin:0;padding:0;display:grid;gap:12px}
.howto li{counter-increment:h;display:grid;grid-template-columns:42px 1fr;gap:4px 14px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px}
.howto li::before{content:counter(h);grid-row:span 2;width:42px;height:42px;border-radius:50%;background:var(--gold);color:#1B2A4A;display:grid;place-items:center;font:800 18px/1 var(--f-display)}
.howto b{font-size:17px}
.howto span{color:var(--muted);font-size:16px}
.split .btn{margin-top:22px}

/* author */
.author{background:var(--navy);color:var(--on-navy-muted)}
.author p{margin-top:14px;max-width:62ch}
.creds{display:grid;grid-template-columns:1fr 1fr;margin:0;border-top:1px solid rgba(255,255,255,.15)}
.creds div{padding:16px 16px 16px 0;border-bottom:1px solid rgba(255,255,255,.15)}
.creds dt{font:500 11.5px/1.2 var(--f-mono);letter-spacing:.08em;text-transform:uppercase}
.creds dd{margin:6px 0 0;font:800 22px/1.15 var(--f-display);color:#fff}

/* faq */
.faq{max-width:820px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:20px 40px 20px 0;font:700 19px/1.35 var(--f-body);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:15px;font-size:28px;color:var(--gold-ink)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{padding:0 0 20px;color:var(--muted);max-width:70ch}

/* footer */
.foot{border-top:1px solid var(--line);background:var(--surface);padding-block:36px calc(36px + env(safe-area-inset-bottom,0px))}
.foot-in{display:grid;grid-template-columns:1fr auto;gap:20px 30px;align-items:start}
.foot-in nav{display:flex;gap:16px;flex-wrap:wrap}
.foot-in nav a{color:var(--ink);font-weight:600;text-decoration:none}
.foot-in p{color:var(--muted);font-size:15.5px;margin-top:8px}
.foot-in .small{grid-column:1 / -1}
@media (max-width:700px){.foot-in{grid-template-columns:1fr}}

/* modal */
.modal{position:fixed;inset:0;z-index:2147483000;background:rgba(14,22,40,.72);display:grid;place-items:center;padding:16px;overflow:auto}
.modal[hidden]{display:none}
.modal .box{background:var(--surface);color:var(--ink);border-radius:18px;max-width:520px;width:100%;padding:28px;position:relative;display:grid;gap:12px}
.modal h2{font-size:26px;font-weight:800}
.modal p{color:var(--muted)}
.modal label{font-weight:600;display:grid;gap:5px}
.modal select,.modal textarea,.modal input{font:inherit;padding:11px 12px;border:2px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);width:100%}
.modal .x{position:absolute;top:10px;right:10px;width:38px;height:38px;border:0;background:none;font-size:26px;cursor:pointer;color:var(--muted);border-radius:10px}
.modal .err{color:var(--red);font-weight:600;min-height:1em}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 20px;border-radius:999px;font-weight:600;z-index:2147483001;opacity:0;transition:opacity .2s;pointer-events:none;max-width:92vw;text-align:center}
.toast.show{opacity:1}