:root{color-scheme:dark;--bg:#171217;--surface:#25191e;--surface2:#301e25;--red:#f04436;--gold:#f2c76b;--text:#f7ebdd;--muted:#c7b7b1;--green:#66d5ad}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 85% 20%,#392025 0,transparent 32%),var(--bg);color:var(--text);font:16px/1.55 Manrope,Arial,sans-serif}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer}.skip{position:absolute;left:12px;top:-60px;background:var(--gold);color:#171217;padding:10px;z-index:30}.skip:focus{top:12px}.shell{max-width:1440px;margin:auto;padding:0 5%}.topbar{min-height:92px;display:flex;align-items:center;gap:40px;border-bottom:1px solid #63464b}.brand{display:flex;align-items:center;gap:12px;font:19px/1 Russo One,Arial,sans-serif;letter-spacing:.05em;white-space:nowrap}.brand-mark{width:42px;height:42px;border:1px solid var(--gold);border-radius:50%;display:grid;place-items:center;color:var(--gold);box-shadow:0 0 20px #f2c76b33}.brand-sub{display:block;font:700 9px/1.3 Manrope,sans-serif;letter-spacing:.3em;color:var(--gold);margin-top:5px}.statusbar{display:flex;align-items:center;gap:14px;margin-left:auto}.avatar{width:39px;height:39px;display:grid;place-items:center;border-radius:8px;background:#5e2834;color:var(--gold);font-size:27px}.eyebrow{display:block;color:var(--muted);font-size:10px;letter-spacing:.18em;font-weight:800}.eyebrow.accent{color:var(--gold)}.statusbar strong{font-size:12px;white-space:nowrap}.bar{width:110px;height:7px;border-radius:20px;background:#5a3d41;overflow:hidden}.bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red),var(--gold));border-radius:20px}.progress-number{white-space:nowrap;font-size:11px;color:var(--gold)}.admin-link{font-size:11px;color:var(--muted);border-left:1px solid #63464b;padding-left:22px}.admin-link:hover,.back:hover{color:var(--gold)}.hero{min-height:440px;margin-top:28px;border:1px solid #704b46;background:linear-gradient(90deg,#2d1a22 0%,#2d1a22 39%,#251821b0 70%,#25182122),radial-gradient(circle at 83% 47%,#842629 0,transparent 32%);position:relative;overflow:hidden;box-shadow:0 20px 55px #0c080b88}.hero:before,.hero:after{content:"";position:absolute;width:430px;height:430px;border:1px solid #e69d4833;border-radius:50%;right:4%;top:-15%;pointer-events:none}.hero:after{width:340px;height:340px;right:7.4%;top:-5%;border-style:dashed}.hero-copy{position:relative;z-index:2;padding:63px 0 55px 6%;max-width:650px}.kicker{display:inline-block;background:#502833;border:1px solid #a26653;padding:8px 13px;color:var(--gold);font-size:11px;letter-spacing:.18em;font-weight:800}.spark{font-size:17px;margin-right:8px}.hero h1,h2,h3{font-family:Russo One,Arial,sans-serif;font-weight:400}.hero h1{font-size:clamp(38px,4.7vw,69px);line-height:1.09;margin:25px 0 20px;letter-spacing:.015em}.hero h1 em{font-style:normal;color:var(--gold);display:block}.hero p{max-width:485px;color:#e4cbc2;margin:0 0 27px}.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.button{display:inline-flex;justify-content:center;align-items:center;gap:12px;border-radius:4px;padding:12px 19px;border:1px solid transparent;font-weight:800;font-size:13px;min-height:45px;transition:transform .2s,background .2s,border-color .2s}.button:hover{transform:translateY(-2px)}.button:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.primary{background:linear-gradient(125deg,#f05236,#be332e);color:#fff;box-shadow:0 5px 20px #ee453644}.primary:hover{background:#f65a42}.secondary{background:#573038;color:#fff;border-color:#aa675f}.secondary:hover,.ghost:hover{border-color:var(--gold);background:#4b2c31}.ghost{border-color:#8e6260;color:var(--gold);background:#332027}.hero-note{font-size:12px;color:#d6b5aa}.hero-art{position:absolute;inset:0 0 0 43%;background-image:linear-gradient(90deg,#2d1a22 0%,transparent 36%),url('/megumin-reference.png');background-position:center,right center;background-size:cover,cover;opacity:.82;filter:saturate(.85) contrast(1.05)}.hero-runes{position:absolute;right:30px;bottom:18px;color:var(--gold);opacity:.6;letter-spacing:.7em}.intro{display:flex;justify-content:space-between;align-items:center;margin:65px 0 23px}.intro h2{font-size:clamp(27px,3vw,37px);margin:7px 0}.intro p{color:var(--muted);margin:0}.intro-seal{font-size:45px;color:var(--gold);border:1px solid #7e5e4b;border-radius:50%;width:75px;height:75px;display:grid;place-items:center}.books{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.book{min-height:350px;position:relative;overflow:hidden;padding:26px;border:1px solid #805449;background:linear-gradient(155deg,#66303a,#26181e 70%);display:flex;flex-direction:column;align-items:flex-start;transition:transform .22s,box-shadow .22s,border-color .22s}.book:hover{transform:translateY(-6px);box-shadow:0 18px 35px #100b0e99;border-color:var(--gold)}.book:before{content:"";position:absolute;inset:8px;border:1px solid #c1925f5e;pointer-events:none}.book:after{content:"";position:absolute;top:0;bottom:0;left:0;width:14px;background:linear-gradient(90deg,#160f13,#9e5d4c 55%,#26161d);box-shadow:4px 0 12px #140b0eaa}.book.optimization{background:radial-gradient(circle at 65% 35%,#77582d 0,transparent 40%),linear-gradient(145deg,#613241,#25191f 75%)}.book.development{background:radial-gradient(circle at 70% 34%,#4b5365 0,transparent 43%),linear-gradient(145deg,#633544,#25191f 75%)}.book.security{background:radial-gradient(circle at 68% 34%,#43564c 0,transparent 43%),linear-gradient(145deg,#59303d,#25191f 75%)}.book-no{font-size:11px;letter-spacing:.2em;color:#eac492;font-weight:800}.book-symbol{align-self:center;display:grid;place-items:center;width:132px;height:132px;margin:12px 0;border:2px solid #c6955c;border-radius:50%;font-size:66px;color:var(--gold);text-shadow:0 0 24px #f2c76b99;box-shadow:0 0 0 9px #c6955c20,inset 0 0 24px #f2c76b44}.book h3{font-size:21px;line-height:1.3;margin:auto 0 12px}.book p{font-size:12px;color:#dec8bf;margin:0 0 15px}.book-bottom{display:flex;align-items:center;justify-content:space-between;width:100%;gap:10px}.book-bottom span{font-size:12px;color:var(--gold)}.book-bottom a{font-size:11px;text-decoration:underline;text-underline-offset:4px;color:#f4d8ad}.next-panel{display:flex;gap:20px;align-items:center;margin:28px 0 70px;padding:23px 26px;border:1px solid #765043;background:linear-gradient(110deg,#38202a,#25191f)}.next-icon{font-size:42px;color:var(--gold)}.next-panel h2{font-size:19px;margin:5px 0}.next-panel p{color:var(--muted);font-size:13px;margin:0}.next-panel .button{margin-left:auto;white-space:nowrap}.course-view{border-top:1px solid #664b45;padding:26px 0 80px}.course-view[hidden],.hero[hidden],.intro[hidden],.books[hidden],.next-panel[hidden]{display:none}.back{border:0;background:none;color:var(--muted);padding:8px 0}.course-head-inner{margin:30px 0 46px;padding:35px;border:1px solid #815c4c;background:radial-gradient(circle at right,#6a3038,transparent 50%),#2b1b22}.course-head h2{font-size:clamp(29px,3.5vw,44px);margin:8px 0}.course-head p{color:var(--muted);max-width:700px}.lab-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:20px}.lab-heading h3{font-size:27px;margin:4px 0}.lab-heading p{color:var(--muted);font-size:13px;margin:0}.lab-list{max-width:980px}.empty{padding:38px;border:1px dashed #8c6253;background:#291b20;color:var(--muted);text-align:center}.empty strong{display:block;color:var(--text);font-size:17px;margin-bottom:8px}.lab{display:grid;grid-template-columns:42px 1fr auto;gap:17px;align-items:start;padding:22px 18px;margin-bottom:12px;border:1px solid #64484a;background:#291d23}.lab-rune{width:40px;height:40px;border:2px solid #826565;border-radius:50%;display:grid;place-items:center;color:#bca39c;font-size:21px}.lab.doing .lab-rune{border-color:var(--gold);color:var(--gold);box-shadow:0 0 14px #f2c76b55}.lab.submitted .lab-rune{border-color:#9ebfea;color:#9ebfea}.lab.done .lab-rune{border-color:var(--green);color:var(--green);box-shadow:0 0 14px #66d5ad55}.lab.overdue .lab-rune{border-color:#e56d72;color:#e56d72}.lab h4{font-size:16px;margin:0 0 7px}.lab-meta{display:flex;flex-wrap:wrap;gap:9px;color:var(--muted);font-size:12px}.pill{padding:2px 8px;border:1px solid #8a6a5e;color:var(--gold);border-radius:20px}.lab.done .pill{color:var(--green);border-color:var(--green)}.lab.overdue .pill{color:#e56d72;border-color:#e56d72}.lab-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:end}.small-action{border:1px solid #8a635d;background:#3a252b;color:var(--text);padding:7px 10px;font-size:12px;border-radius:3px}.small-action:hover{border-color:var(--gold)}.lab-actions a{color:var(--gold)}footer{border-top:1px solid #63464b;display:flex;justify-content:space-between;gap:20px;padding:22px 0 90px;color:var(--muted);font-size:11px}.companion{position:fixed;right:20px;bottom:16px;width:258px;z-index:10;border:1px solid #b2795b;background:#302027f0;box-shadow:0 10px 30px #0c080baa;backdrop-filter:blur(10px)}.companion-toggle{width:100%;display:flex;align-items:center;gap:10px;text-align:left;background:#512b34;color:var(--gold);border:0;padding:6px 12px;font-size:11px;letter-spacing:.16em;font-weight:800}.companion-toggle span:last-child{margin-left:auto}.companion-avatar{width:36px;height:36px;border-radius:50%;border:2px solid var(--gold);background:url('/megumin-reference.png') center/cover}.companion p{margin:0;padding:11px 14px;font-size:12px;line-height:1.5}.companion.collapsed p{display:none}.lab-dialog{width:min(560px,calc(100% - 28px));max-height:calc(100% - 28px);overflow:auto;border:1px solid #b8865f;background:#2d1e25;color:var(--text);padding:26px;box-shadow:0 25px 75px #000a}.lab-dialog::backdrop{background:#0c070bcc;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between}.icon-button{border:0;background:none;color:var(--muted);font-size:27px;line-height:1}.lab-dialog h2{font-size:26px}.lab-dialog label{display:block;font-size:13px;font-weight:800;margin:17px 0}.lab-dialog input,.lab-dialog select{display:block;width:100%;margin-top:6px;padding:11px;background:#1d151a;color:var(--text);border:1px solid #816064;border-radius:3px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:13px}.form-note{color:var(--muted);font-size:12px}.dialog-actions{display:flex;justify-content:end;gap:9px;margin-top:22px}@media(max-width:980px){.statusbar .bar,.progress-number,.admin-link{display:none}.hero-art{left:35%;opacity:.5}.books{grid-template-columns:1fr 1fr}.book:last-child{grid-column:1/-1}.hero-copy{max-width:590px}}@media(max-width:650px){.shell{padding:0 18px}.topbar{min-height:74px;gap:10px}.brand{font-size:14px}.brand-mark{width:34px;height:34px}.statusbar{gap:5px}.statusbar .avatar,.statusbar .eyebrow{display:none}.statusbar strong{font-size:10px}.hero{min-height:490px;margin-top:14px}.hero-art{inset:0;opacity:.28;background-position:center,right top}.hero-copy{padding:45px 22px}.hero h1{font-size:40px}.hero-runes{display:none}.intro{margin-top:44px}.intro-seal{display:none}.books{grid-template-columns:1fr}.book:last-child{grid-column:auto}.book{min-height:295px}.book-symbol{width:106px;height:106px;font-size:52px}.next-panel{align-items:flex-start;flex-wrap:wrap}.next-panel .button{margin-left:0}.lab-heading{align-items:start;flex-direction:column}.lab{grid-template-columns:35px 1fr}.lab-actions{grid-column:2;justify-content:start}.form-row{grid-template-columns:1fr;gap:0}footer{display:block;padding-bottom:110px}footer span{display:block;margin-bottom:8px}.companion{right:10px;bottom:10px;width:210px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
.book-open{position:absolute;inset:0;border:0;background:transparent;cursor:pointer;z-index:1}.book-bottom a{position:relative;z-index:2}.book:focus-within{outline:3px solid var(--gold);outline-offset:3px}
.lab-actions .site-action{background:#623037;border-color:#dd765e;color:#fff;font-weight:800}.lab-actions .site-action:hover{background:#a9473e;border-color:var(--gold)}
.login-dialog{width:min(430px,calc(100% - 28px))}.login-dialog .button{width:100%}.login-error{min-height:1.4em;color:#ff9a9f;font-size:13px}

.logout-link{border:1px solid #8e6260;background:#332027;color:var(--gold);padding:7px 10px;font-size:11px;border-radius:3px}.logout-link[hidden]{display:none}.logout-link:hover{border-color:var(--gold)}