/* VijayDevOps Academy v4
   A developer-platform look: dark "ops" stages with aurora light and glass, light sections for reading,
   one terminal language, and a multi-colour module palette. */
:root{
  --bg:#f3f5fa; --bg2:#e9edf6; --surface:#ffffff; --surface2:#eff2f9; --fg:#0a1020; --muted:#586379; --line:#dde3ef; --line2:#c4cde0;
  --c-or:#ff6a2b; --c-am:#ffb020; --c-gr:#16a34a; --c-cy:#0891b2; --c-vi:#6d4aff; --c-pk:#e11d74;
  --accent:#c2410c; --ok:#15803d; --wa:#128c4a;
  --shadow:0 1px 2px rgba(10,16,32,.05),0 20px 44px -22px rgba(10,16,32,.28);
  --f-body:'Geist',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --f-mono:'Geist Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#070b16; --bg2:#0a1020; --surface:#0f1730; --surface2:#16203f; --fg:#eaf0ff; --muted:#9aa7c4; --line:#1f2b4d; --line2:#33437a;
    --c-gr:#4ade80; --c-cy:#22d3ee; --c-vi:#9b83ff; --c-pk:#ff5c9d;
    --accent:#ff9a66; --ok:#4ade80; --wa:#4ade80; --shadow:0 1px 2px rgba(0,0,0,.4),0 20px 44px -22px rgba(0,0,0,.8); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#070b16; --bg2:#0a1020; --surface:#0f1730; --surface2:#16203f; --fg:#eaf0ff; --muted:#9aa7c4; --line:#1f2b4d; --line2:#33437a;
  --c-gr:#4ade80; --c-cy:#22d3ee; --c-vi:#9b83ff; --c-pk:#ff5c9d;
  --accent:#ff9a66; --ok:#4ade80; --wa:#4ade80; --shadow:0 1px 2px rgba(0,0,0,.4),0 20px 44px -22px rgba(0,0,0,.8); color-scheme:dark;
}
/* dark stage: always dark, in either theme */
.dk{
  --bg:#050813; --bg2:#0a1020; --surface:rgba(255,255,255,.05); --surface2:rgba(255,255,255,.09); --fg:#eaf0ff; --muted:#a3b0cf; --line:rgba(255,255,255,.1); --line2:rgba(255,255,255,.2);
  --c-gr:#4ade80; --c-cy:#22d3ee; --c-vi:#9b83ff; --c-pk:#ff5c9d; --accent:#ff9a66; --ok:#4ade80; --wa:#4ade80;
  background:var(--bg); color:var(--fg); color-scheme:dark;
}
.alt{background:var(--bg2)}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:1.0625rem;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
[hidden]{display:none!important}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure,blockquote,pre{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-am);outline-offset:3px;border-radius:6px}
.i{width:1.15em;height:1.15em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;left:16px;top:-64px;z-index:300;background:#fff;color:#000;padding:.6rem 1rem;border-radius:8px;text-decoration:none;font-weight:600}
.skip:focus{top:calc(12px + env(safe-area-inset-top,0px))}
#sp{position:fixed;left:0;top:0;height:3px;width:100%;transform-origin:0 50%;transform:scaleX(0);background:linear-gradient(90deg,var(--c-or),var(--c-am),var(--c-pk),var(--c-vi));z-index:310;pointer-events:none}

.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:clamp(16px,4vw,32px)}
.narrow{max-width:780px}
section{padding-block:clamp(64px,9vw,120px);position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--f-mono);font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:500}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--c-or),var(--c-pk))}
h1{font-size:clamp(2.4rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.04em;font-weight:650;text-wrap:balance}
h2{font-size:clamp(1.9rem,4vw,3rem);line-height:1.08;letter-spacing:-.035em;font-weight:650;text-wrap:balance}
h3{font-size:1.2rem;line-height:1.3;letter-spacing:-.015em;font-weight:600}
.grad{background:linear-gradient(95deg,#ff7a3d 0%,#ffb020 35%,#ff5c9d 70%,#9b83ff 100%);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.lead{font-size:clamp(1.05rem,1.5vw,1.22rem);color:var(--muted);max-width:60ch;text-wrap:pretty}
.sec-head{display:flex;flex-direction:column;gap:1rem;margin-bottom:3rem;max-width:760px}
.muted{color:var(--muted)}
.mono{font-family:var(--f-mono)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;padding:.8rem 1.3rem;border-radius:12px;font-weight:600;font-size:.98rem;text-decoration:none;border:1px solid transparent;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s,filter .2s;line-height:1.2;text-align:center}
.btn-primary{background:linear-gradient(135deg,#ff7a3d,#ffb020);color:#1c0b02;box-shadow:0 10px 30px -10px rgba(255,122,61,.75)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -10px rgba(255,122,61,.9);filter:saturate(1.1)}
.btn-ghost{background:var(--surface);border-color:var(--line2)}
.btn-ghost:hover{border-color:var(--fg);transform:translateY(-2px)}
.dk .btn-ghost{background:rgba(255,255,255,.06);backdrop-filter:blur(8px)}
.btn-wa{background:transparent;border-color:var(--wa);color:var(--wa)}
.btn-wa:hover{background:var(--wa);color:#04150a;transform:translateY(-2px)}
.btn-lg{padding:1rem 1.6rem;font-size:1.03rem}
.btn-block{width:100%}
.link{display:inline-flex;gap:.4rem;align-items:center;font-weight:600;color:var(--accent);text-decoration:none}
.link:hover{text-decoration:underline;text-underline-offset:3px}
.link .i{transition:transform .2s}.link:hover .i{transform:translateX(3px)}

/* header (always dark glass) */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:90;background:rgba(5,8,19,.72);backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);border-bottom:1px solid rgba(255,255,255,.08);color:#eaf0ff;--muted:#a3b0cf;--line:rgba(255,255,255,.14);--surface:rgba(255,255,255,.06);--fg:#eaf0ff}
.nav-in{display:flex;align-items:center;gap:1.4rem;height:68px}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;font-weight:650;font-size:1.05rem;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#ff7a3d,#ff3d81 60%,#7c5cff);display:grid;place-items:center;box-shadow:0 6px 20px -6px rgba(255,92,157,.7)}
.brand-mark svg{width:17px;height:17px;fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.brand small{display:block;font-weight:400;font-size:.7rem;color:var(--muted);letter-spacing:0;line-height:1}
.nav-links{display:flex;gap:1.5rem;margin-left:auto;font-size:.95rem;font-weight:500}
.nav-links a{text-decoration:none;color:var(--muted);padding:.4rem 0;border-bottom:2px solid transparent;transition:color .2s}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:#fff}
.nav-links a[aria-current="page"]{border-bottom-color:var(--c-or)}
.nav-tools{display:flex;align-items:center;gap:.5rem}
.icon-btn{display:inline-flex;align-items:center;gap:.5rem;height:40px;min-width:40px;justify-content:center;padding:0 .7rem;border:1px solid var(--line);background:var(--surface);border-radius:10px;font-size:.82rem;color:var(--muted);transition:border-color .2s,color .2s}
.icon-btn:hover{color:var(--fg);border-color:var(--line2)}
.icon-btn kbd{font-family:var(--f-mono);font-size:.7rem;border:1px solid var(--line);border-radius:5px;padding:0 .35rem;background:rgba(0,0,0,.2)}
.menu-btn{display:none}
.mob{display:none;border-top:1px solid rgba(255,255,255,.08);background:#050813}
.mob.open{display:block}
.mob a{display:flex;justify-content:space-between;align-items:center;padding:1rem clamp(16px,4vw,32px);border-bottom:1px solid rgba(255,255,255,.08);text-decoration:none;font-weight:500;color:#eaf0ff}
@media(max-width:960px){.nav-links{display:none}.menu-btn{display:inline-flex}.nav-tools{margin-left:auto}.hide-s{display:none}}

/* aurora + grid */
.aurora{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.aurora i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;animation:drift 20s ease-in-out infinite alternate}
.aurora i:nth-child(1){width:46vw;height:46vw;max-width:640px;max-height:640px;left:-8%;top:-18%;background:var(--a1,#ff6a2b)}
.aurora i:nth-child(2){width:40vw;height:40vw;max-width:560px;max-height:560px;right:-6%;top:6%;background:var(--a2,#7c5cff);animation-delay:-6s}
.aurora i:nth-child(3){width:34vw;height:34vw;max-width:480px;max-height:480px;left:34%;bottom:-24%;background:var(--a3,#ff3d81);opacity:.32;animation-delay:-12s}
@keyframes drift{to{transform:translate3d(6%,8%,0) scale(1.15)}}
.gridbg{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000,transparent 75%);mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000,transparent 75%)}

/* hero */
.hero{padding-block:clamp(48px,7vw,104px) clamp(40px,5vw,72px);overflow:hidden}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(32px,5vw,64px);align-items:center}
.pill{display:inline-flex;align-items:center;gap:.6rem;font-size:.85rem;font-weight:500;padding:.4rem .9rem;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted);backdrop-filter:blur(8px)}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--c-gr);box-shadow:0 0 0 0 rgba(74,222,128,.7);animation:ping 2s infinite;flex:none}
@keyframes ping{70%{box-shadow:0 0 0 9px rgba(74,222,128,0)}100%{box-shadow:0 0 0 0 rgba(74,222,128,0)}}
.dot{width:8px;height:8px;border-radius:50%;background:var(--c-gr);flex:none}
.hero h1{margin-top:1.4rem;font-size:clamp(2.4rem,5vw,3.9rem)}
.hero .lead{margin-top:1.4rem}
.cta-row{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2rem}
.rise{animation:rise .9s cubic-bezier(.2,.7,.2,1) both;animation-delay:calc(var(--d,0)*90ms)}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin-top:2.6rem;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.stats>div{background:rgba(8,12,26,.7);padding:1rem 1.2rem;display:flex;flex-direction:column;gap:.1rem;backdrop-filter:blur(8px)}
.stats b{font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:650;letter-spacing:-.03em;line-height:1.1;font-variant-numeric:tabular-nums;background:linear-gradient(95deg,#fff,#ffcf9f);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.stats span{font-size:.8rem;color:var(--muted)}
@media(max-width:720px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* terminal */
.term{--glow:rgba(255,122,61,.35);background:#060a14;border:1px solid rgba(255,255,255,.13);border-radius:16px;box-shadow:0 40px 90px -36px rgba(0,0,0,.9),0 0 70px -24px var(--glow);font-family:var(--f-mono);font-size:.82rem;overflow:hidden;color:#cfe0ff;text-align:left}
.term-bar{display:flex;align-items:center;gap:.5rem;padding:.7rem .9rem;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03)}
.term-bar i{width:10px;height:10px;border-radius:50%;background:#ff5f57}.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-title{margin-left:.5rem;color:#7b8bb0;font-size:.75rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.term-tabs{display:flex;gap:.3rem;padding:.55rem .7rem 0;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid rgba(255,255,255,.08)}
.term-tabs button{font-family:var(--f-mono);font-size:.75rem;background:transparent;border:0;color:#7b8bb0;padding:.5rem .8rem;border-radius:8px 8px 0 0;border-bottom:2px solid transparent;white-space:nowrap}
.term-tabs button:hover{color:#fff}
.term-tabs button[aria-selected="true"]{color:#fff;border-bottom-color:var(--c-am);background:rgba(255,255,255,.05)}
.tb{padding:1rem 1.1rem 1.2rem;min-height:15rem;line-height:1.75;overflow-x:auto}
.tl{white-space:pre-wrap;word-break:break-word}
.tl .pr{color:#4ade80;margin-right:.55rem}
.tl.ok{color:#4ade80}.tl.dim{color:#7b8bb0}.tl.warn{color:#fbbf24}.tl.ai{color:#c4b5fd}.tl.hl{color:#fff}
.caret{display:inline-block;width:.55em;height:1.05em;background:#ffb020;vertical-align:text-bottom;margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.hero-side{position:relative}
.float{position:absolute;display:flex;align-items:center;gap:.6rem;padding:.65rem .9rem;border-radius:14px;background:rgba(14,20,44,.78);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.14);font-size:.78rem;box-shadow:0 20px 40px -20px rgba(0,0,0,.8);animation:floaty 7s ease-in-out infinite;color:#eaf0ff;font-family:var(--f-mono);z-index:2}
.float b{font-weight:500;display:block;color:#fff}.float span{color:#8da0c8;font-size:.7rem;display:block}
.float.f1{right:-14px;top:-22px}.float.f2{left:-22px;bottom:34px;animation-delay:-2.5s}.float.f3{right:10px;bottom:-26px;animation-delay:-4.5s}
.float .ic2{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:rgba(74,222,128,.14);color:#4ade80;flex:none}
.float.f2 .ic2{background:rgba(124,92,255,.2);color:#b6a6ff}.float.f3 .ic2{background:rgba(255,176,32,.16);color:#ffb020}
@keyframes floaty{50%{transform:translateY(-9px)}}
@media(max-width:940px){.hero-grid{grid-template-columns:1fr}.float.f1{right:6px}.float.f2{left:6px}.float.f3{right:6px}}
@media(max-width:560px){.float{display:none}}

/* marquee */
.marq{overflow:hidden;border-block:1px solid rgba(255,255,255,.08);background:#050813;padding-block:1.1rem;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marq-t{display:flex;gap:.8rem;width:max-content;animation:scrollx 46s linear infinite}
.marq:hover .marq-t{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}
.tool{display:inline-flex;align-items:center;gap:.55rem;padding:.45rem .9rem;border:1px solid rgba(255,255,255,.1);border-radius:999px;font-family:var(--f-mono);font-size:.82rem;color:#d6e0f7;background:rgba(255,255,255,.03);white-space:nowrap}
.tool i{width:8px;height:8px;border-radius:50%;background:var(--tc);box-shadow:0 0 10px var(--tc)}

/* generic cards */
.grid{display:grid;gap:1.1rem}
.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){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:1.5rem;display:flex;flex-direction:column;gap:.85rem;min-width:0;position:relative}
a.card{text-decoration:none;transition:border-color .25s,transform .25s}
a.card:hover{border-color:var(--c-or);transform:translateY(-3px)}
.card p{color:var(--muted);font-size:.97rem}
.ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;color:var(--ic,var(--c-or));background:color-mix(in srgb,var(--ic,var(--c-or)) 15%,transparent);flex:none}
.ic .i{width:22px;height:22px}
.card .go{margin-top:auto;padding-top:.3rem}
.glow{position:relative;overflow:hidden}
.glow::after{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(320px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--gc,#ff7a3d) 22%,transparent),transparent 62%);opacity:0;transition:opacity .35s;pointer-events:none}
.glow:hover::after{opacity:1}
.tag{display:inline-flex;align-items:center;gap:.4rem;font-family:var(--f-mono);font-size:.7rem;letter-spacing:.05em;text-transform:uppercase;padding:.25rem .6rem;border-radius:7px;border:1px solid var(--line);color:var(--muted);background:var(--surface)}
.tag.hot{--bc:var(--c-or);background:color-mix(in srgb,var(--bc) 16%,transparent);border-color:color-mix(in srgb,var(--bc) 35%,transparent);color:color-mix(in srgb,var(--bc) 65%,var(--fg))}
.chip{font-family:var(--f-mono);font-size:.76rem;padding:.28rem .6rem;border-radius:8px;background:var(--surface2);border:1px solid var(--line);color:var(--fg);display:inline-flex;align-items:center;gap:.45rem}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--tc,var(--c-or))}
.cc-meta{display:flex;flex-wrap:wrap;gap:.4rem}
.bd{--bc:var(--c-or);font-family:var(--f-mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;padding:.14rem .5rem;border-radius:6px;background:color-mix(in srgb,var(--bc) 16%,transparent);color:color-mix(in srgb,var(--bc) 62%,var(--fg));font-weight:500;white-space:nowrap}
.bd.cap{--bc:var(--c-pk)}.bd.chk{--bc:var(--c-vi)}.bd.ai{--bc:var(--c-cy);white-space:normal;max-width:100%;text-transform:none;letter-spacing:0;font-size:.74rem;display:inline-flex;gap:.35rem;align-items:center}

/* track explorer */
.tabs{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:1.6rem}
.tab{display:inline-flex;align-items:center;gap:.65rem;padding:.7rem 1.1rem;border-radius:14px;border:1px solid var(--line2);background:var(--surface);font-weight:600;font-size:.97rem;transition:all .2s}
.tab i{width:10px;height:10px;border-radius:50%;background:var(--cc);box-shadow:0 0 12px var(--cc)}
.tab small{font-family:var(--f-mono);font-weight:400;color:var(--muted);font-size:.78rem}
.tab:hover{border-color:var(--cc)}
.tab[aria-selected="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.tab[aria-selected="true"] small{color:color-mix(in srgb,var(--bg) 70%,var(--fg))}
.panel{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:1.2rem;animation:rise .5s both}
@media(max-width:900px){.panel{grid-template-columns:minmax(0,1fr)}}
.pl{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:clamp(1.3rem,3vw,2rem);display:flex;flex-direction:column;gap:1.1rem;position:relative;overflow:hidden}
.pl::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,var(--cc),var(--cc2))}
.pl h3{font-size:clamp(1.5rem,2.6vw,2rem);letter-spacing:-.03em}
.pl .ticks{gap:.55rem;font-size:.97rem}
.pl-foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:1rem 1.4rem;align-items:center;padding-top:1.1rem;border-top:1px solid var(--line)}
.price{font-size:2rem;font-weight:650;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1}
.price small{font-size:.8rem;font-weight:400;color:var(--muted);letter-spacing:0;margin-left:.3rem}
.dash{background:#060a14;color:#eaf0ff;border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:1.4rem;display:flex;flex-direction:column;gap:1rem;position:relative;overflow:hidden;--muted:#8da0c8}
.dash::before{content:"";position:absolute;width:320px;height:320px;right:-120px;top:-140px;border-radius:50%;background:var(--cc);filter:blur(90px);opacity:.28;pointer-events:none}
.dash-h{display:flex;justify-content:space-between;gap:1rem;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:#8da0c8;position:relative}
.pbar{height:7px;border-radius:99px;background:rgba(255,255,255,.1);overflow:hidden;position:relative}
.pbar i{display:block;height:100%;width:var(--w,0%);border-radius:inherit;background:linear-gradient(90deg,var(--cc,#ff7a3d),var(--cc2,#ffb020));box-shadow:0 0 14px var(--cc,#ff7a3d);transition:width .6s cubic-bezier(.2,.7,.2,1)}
.ladder{display:grid;gap:.45rem;position:relative}
.ladder li{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:.8rem;align-items:center;padding:.6rem .75rem;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.07);font-size:.9rem}
.ladder .n{font-family:var(--f-mono);font-size:.72rem;color:var(--mc);font-weight:500}
.ladder .s{font-family:var(--f-mono);font-size:.78rem;color:#8da0c8}
.ladder li.done .s{color:#4ade80}.ladder li.now{border-color:color-mix(in srgb,var(--mc) 55%,transparent);background:color-mix(in srgb,var(--mc) 10%,transparent)}
.ladder li.now .s{color:var(--c-am);animation:blink 1.4s steps(1) infinite}
.ladder li.dim{opacity:.55}
.dash-note{font-size:.78rem;color:#7b8bb0;position:relative}

/* steps */
.steps{display:grid;gap:1rem;counter-reset:s}
.steps li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:1rem;padding:1.2rem 1.3rem;border-radius:18px;border:1px solid var(--line);background:var(--surface);transition:border-color .2s,transform .2s}
.steps li:hover{border-color:var(--sc);transform:translateX(4px)}
.steps .n{font-family:var(--f-mono);font-size:.8rem;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:var(--sc);background:color-mix(in srgb,var(--sc) 14%,transparent);font-weight:500}
.steps p{color:var(--muted);font-size:.96rem;margin-top:.2rem}
.split{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,5vw,64px);align-items:center}
@media(max-width:900px){.split{grid-template-columns:minmax(0,1fr)}}

/* roadmap dots */
.road{display:flex;flex-wrap:wrap;gap:7px}
.dotd{--mc:var(--c-or);width:30px;height:30px;border-radius:9px;border:1px solid color-mix(in srgb,var(--mc) 55%,transparent);background:color-mix(in srgb,var(--mc) 14%,transparent);font-family:var(--f-mono);font-size:.68rem;display:grid;place-items:center;color:var(--fg);text-decoration:none;transition:transform .18s,background .18s,box-shadow .18s}
.dotd:hover,.dotd:focus-visible{transform:translateY(-4px) scale(1.08);background:var(--mc);color:#07101c;box-shadow:0 10px 22px -6px var(--mc)}
.dotd.proj{box-shadow:0 0 0 2px var(--bg),0 0 0 3.5px var(--mc)}
.dotd.done{background:var(--mc);color:#07101c}
.road-cap{margin-top:1.1rem;min-height:4.6rem;padding:.9rem 1.1rem;border-radius:14px;border:1px solid var(--line);background:var(--surface);font-size:.94rem}
.road-cap b{display:block;font-weight:600}.road-cap span{color:var(--muted);font-size:.88rem}
.legend{display:flex;flex-wrap:wrap;gap:.5rem 1.1rem;margin-top:1.1rem;font-size:.82rem;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:.45rem}
.legend i{width:10px;height:10px;border-radius:3px;background:var(--mc)}

/* pipeline */
.pipe{display:grid;grid-template-columns:repeat(var(--n,7),minmax(0,1fr));gap:.7rem}
.pn{position:relative;padding:.95rem .85rem;border-radius:14px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;gap:.25rem;animation:stage 11s infinite;animation-delay:calc(var(--i)*1s)}
.pn b{font-weight:600;font-size:.95rem}
.pn span{font-family:var(--f-mono);font-size:.7rem;color:#8da0c8}
.pn::before{content:"";width:9px;height:9px;border-radius:50%;background:#33437a;position:absolute;right:.8rem;top:.9rem;animation:stdot 11s infinite;animation-delay:calc(var(--i)*1s)}
.pn:not(:last-child)::after{content:"";position:absolute;left:100%;top:50%;width:.7rem;height:2px;background:rgba(255,255,255,.12)}
@keyframes stage{0%{border-color:rgba(255,255,255,.1);background:rgba(255,255,255,.04)}3%{border-color:rgba(255,176,32,.7);background:rgba(255,176,32,.08)}9%,86%{border-color:rgba(74,222,128,.45);background:rgba(74,222,128,.06)}100%{border-color:rgba(255,255,255,.1);background:rgba(255,255,255,.04)}}
@keyframes stdot{0%{background:#33437a;box-shadow:none}3%{background:#ffb020;box-shadow:0 0 12px #ffb020}9%,86%{background:#4ade80;box-shadow:0 0 12px #4ade80}100%{background:#33437a;box-shadow:none}}
@media(max-width:900px){.pipe{grid-template-columns:repeat(2,minmax(0,1fr))}.pn::after{display:none}}
.flow-base{margin-top:.8rem;border:1px dashed rgba(255,255,255,.18);border-radius:14px;padding:.9rem 1rem;font-family:var(--f-mono);font-size:.8rem;color:#8da0c8;display:flex;flex-wrap:wrap;gap:.4rem 1.4rem}
.flow-base b{color:var(--c-am);font-weight:500}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:1rem}
.bt{grid-column:span 2;border-radius:22px;padding:1.5rem;display:flex;flex-direction:column;gap:.8rem;background:linear-gradient(var(--surface),var(--surface)) padding-box,linear-gradient(140deg,color-mix(in srgb,var(--bc) 60%,transparent),transparent 55%) border-box;border:1px solid transparent;min-width:0}
.bt.w{grid-column:span 4}
.bt p{color:var(--muted);font-size:.96rem}
.bt .pbar{background:var(--line)}
.bt .mini{display:grid;gap:.6rem;margin-top:.4rem}
.bt .mini div{display:grid;grid-template-columns:90px 1fr auto;gap:.8rem;align-items:center;font-family:var(--f-mono);font-size:.74rem;color:var(--muted)}
@media(max-width:900px){.bento{grid-template-columns:repeat(2,minmax(0,1fr))}.bt,.bt.w{grid-column:span 2}}
@media(min-width:620px) and (max-width:900px){.bt:not(.w){grid-column:span 1}}

/* copilot cards */
.cop{padding:1.3rem;border-radius:18px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--cc);display:flex;flex-direction:column;gap:.45rem;min-width:0;transition:transform .2s,border-color .2s}
.cop:hover{transform:translateY(-3px);border-color:var(--cc)}
.cop small{font-family:var(--f-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--cc)}
.cop b{font-weight:600}.cop p{font-size:.92rem;color:var(--muted)}

/* course cards */
.course-card{padding:0;overflow:hidden;border-radius:24px}
.course-card::before{content:"";height:4px;background:linear-gradient(90deg,var(--cc),var(--cc2))}
.course-card .cc-top{padding:1.5rem 1.5rem 1rem;display:flex;flex-direction:column;gap:.75rem;flex:1}
.course-card .cc-bot{padding:1.1rem 1.5rem 1.4rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.cc-price small{display:block;font-size:.75rem;color:var(--muted);line-height:1;margin-bottom:.3rem}

/* reviews */
.quote{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:1.5rem;display:flex;flex-direction:column;gap:1.2rem;min-width:0;position:relative;transition:transform .25s,border-color .25s}
.quote:hover{transform:translateY(-3px);border-color:var(--line2)}
.quote::before{content:"\201C";position:absolute;right:1.1rem;top:.2rem;font-size:3.6rem;line-height:1;color:var(--c-or);opacity:.25;font-family:Georgia,serif}
.quote p{font-size:.98rem;line-height:1.62}
.quote footer{display:flex;align-items:center;gap:.75rem;margin-top:auto}
.av{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-family:var(--f-mono);font-size:.74rem;color:#fff;background:linear-gradient(135deg,hsl(var(--h) 70% 48%),hsl(calc(var(--h) + 50) 70% 38%));flex:none}
.quote b{display:block;font-size:.93rem;line-height:1.25;font-weight:600}
.quote small{display:block;font-size:.8rem;color:var(--muted)}
.more{margin-top:1.6rem}
.more summary{list-style:none;cursor:pointer;display:inline-flex}
.more summary::-webkit-details-marker{display:none}
.more[open] summary{display:none}
.more .grid{margin-top:1.1rem}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:1.5rem;align-items:center;padding:1.3rem 0;cursor:pointer;font-weight:600;font-size:1.1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary .i{transition:transform .25s,color .25s;color:var(--muted)}
.faq details[open] summary .i{transform:rotate(45deg);color:var(--c-or)}
.faq details p{padding:0 2.5rem 1.4rem 0;color:var(--muted);max-width:68ch}

/* cta */
.cta{overflow:hidden;text-align:center}
.cta .wrap{position:relative;display:flex;flex-direction:column;align-items:center;gap:1.2rem}
.cta h2{max-width:18ch}.cta .lead{margin-inline:auto}
.cta .cta-row{justify-content:center}

/* footer */
footer.site{background:#03050d;color:#a3b0cf;padding-block:3.5rem 2rem;font-size:.94rem;border-top:1px solid rgba(255,255,255,.08)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.2fr;gap:2rem}
.foot h4{color:#fff;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;font-family:var(--f-mono);font-weight:500;margin-bottom:.9rem}
.foot ul{display:grid;gap:.5rem}
.foot a{text-decoration:none}.foot a:hover{color:#fff}
.foot .brand{color:#fff}.foot p{margin-top:.8rem;max-width:34ch}
.foot-bot{margin-top:2.4rem;padding-top:1.4rem;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;justify-content:space-between;gap:.6rem;font-size:.85rem}
@media(max-width:860px){.foot{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot{grid-template-columns:1fr}}

/* floating actions */
.fabs{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:80;display:flex;flex-direction:column;gap:.6rem;align-items:flex-end}
.fab{display:inline-flex;align-items:center;gap:.6rem;height:48px;padding:0 1.05rem 0 .85rem;border-radius:999px;border:0;font-weight:600;font-size:.92rem;text-decoration:none;box-shadow:0 14px 30px -10px rgba(0,0,0,.6);transition:transform .2s}
.fab:hover{transform:translateY(-3px)}
.fab .i{width:21px;height:21px}
.fab-wa{background:#16a34a;color:#fff}
.fab-ai{background:rgba(14,20,44,.9);color:#eaf0ff;border:1px solid rgba(255,255,255,.18);height:42px;font-size:.86rem;backdrop-filter:blur(10px)}
@media(max-width:700px){.fab span{display:none}.fab{width:48px;padding:0;justify-content:center}.fab-ai{width:42px}}
body.has-bar .fabs{bottom:calc(84px + env(safe-area-inset-bottom,0px))}

.chat{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(84px + env(safe-area-inset-bottom,0px));z-index:95;width:min(380px,calc(100vw - 32px));background:var(--surface);border:1px solid var(--line2);border-radius:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden}
.chat-h{display:flex;align-items:center;gap:.8rem;padding:.9rem 1rem;border-bottom:1px solid var(--line)}
.chat-h .ic{width:36px;height:36px}
.chat-h b{display:block;font-size:.95rem;line-height:1.2}
.chat-h small{display:flex;align-items:center;gap:.4rem;font-size:.75rem;color:var(--muted)}
.chat-h .icon-btn{margin-left:auto;height:32px;min-width:32px;padding:0}
.msgs{display:flex;flex-direction:column;gap:.7rem;padding:1rem;height:min(320px,46vh);overflow-y:auto}
.m{max-width:88%;padding:.65rem .85rem;border-radius:14px;font-size:.93rem;line-height:1.5;overflow-wrap:anywhere}
.m.bot{background:var(--surface2);border-bottom-left-radius:4px}
.m.user{background:linear-gradient(135deg,#ff7a3d,#ffb020);color:#1c0b02;align-self:flex-end;border-bottom-right-radius:4px}
.m.typing{display:flex;gap:4px;padding:.8rem .9rem}
.m.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:bob 1.1s infinite}
.m.typing i:nth-child(2){animation-delay:.15s}.m.typing i:nth-child(3){animation-delay:.3s}
@keyframes bob{40%{transform:translateY(-4px)}}
.quick{display:flex;flex-wrap:wrap;gap:.4rem;padding:0 1rem .8rem}
.quick button{border:1px solid var(--line2);background:var(--bg);border-radius:999px;padding:.3rem .75rem;font-size:.82rem}
.quick button:hover{border-color:var(--c-or)}
.chat-f{display:flex;gap:.5rem;padding:.7rem;border-top:1px solid var(--line)}
.chat-f input{flex:1;min-width:0;font:inherit;font-size:.95rem;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:10px;padding:.6rem .8rem}
.chat-f input:focus{outline:none;border-color:var(--c-or)}
.chat-f button{width:42px;border:0;border-radius:10px;background:linear-gradient(135deg,#ff7a3d,#ffb020);color:#1c0b02;display:grid;place-items:center}

.pal{position:fixed;inset:0;z-index:250;background:rgba(3,5,13,.65);backdrop-filter:blur(4px);display:grid;justify-items:center;align-items:start;padding:calc(12vh + env(safe-area-inset-top,0px)) 16px 16px}
.pal-box{width:min(560px,100%);background:var(--surface);border:1px solid var(--line2);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.pal-in{display:flex;align-items:center;gap:.7rem;padding:.95rem 1.1rem;border-bottom:1px solid var(--line);color:var(--muted)}
.pal-in input{flex:1;min-width:0;border:0;background:transparent;font:inherit;color:var(--fg);outline:none}
.pal-in kbd{font-family:var(--f-mono);font-size:.7rem;border:1px solid var(--line);border-radius:5px;padding:.1rem .4rem}
.pal ul{max-height:min(340px,50vh);overflow-y:auto;padding:.4rem}
.pal li button{width:100%;display:flex;align-items:center;gap:.8rem;text-align:left;border:0;background:transparent;padding:.65rem .75rem;border-radius:9px;font-size:.96rem}
.pal li button[aria-selected="true"]{background:var(--surface2)}
.pal li small{margin-left:auto;font-family:var(--f-mono);font-size:.7rem;color:var(--muted)}
.pal .none{padding:1rem;color:var(--muted)}

/* inner page header */
.page-head{padding-block:clamp(48px,7vw,96px) clamp(40px,6vw,72px);overflow:hidden}
.page-head .wrap{position:relative}
.crumbs{display:flex;flex-wrap:wrap;gap:.4rem;font-size:.88rem;color:var(--muted);margin-bottom:1.4rem}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--fg)}
.page-head h1{margin-top:1rem;max-width:18ch}
.page-head .lead{margin-top:1.2rem}

/* course hero */
.c-hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:clamp(28px,4vw,56px);align-items:start}
@media(max-width:980px){.c-hero-grid{grid-template-columns:minmax(0,1fr)}}
.c-hero h1{max-width:16ch}
.c-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(16px);border-radius:24px;padding:1.6rem;display:flex;flex-direction:column;gap:1.1rem;box-shadow:0 30px 70px -30px rgba(0,0,0,.8)}
.incl{display:grid;gap:.6rem;font-size:.95rem}
.incl li{display:flex;gap:.6rem;align-items:flex-start}
.incl .i{color:var(--c-gr);margin-top:.3em}
.ticks{display:grid;gap:.8rem}
.ticks li{display:flex;gap:.75rem;align-items:flex-start}
.ticks .i{color:var(--c-gr);margin-top:.3em}
.out-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem}
.out{display:flex;gap:.9rem;align-items:flex-start;padding:1.1rem 1.2rem;border-radius:16px;border:1px solid var(--line);background:var(--surface);transition:border-color .2s,transform .2s}
.out:hover{border-color:var(--oc);transform:translateY(-2px)}
.out .n{font-family:var(--f-mono);font-size:.75rem;color:var(--oc);background:color-mix(in srgb,var(--oc) 14%,transparent);border-radius:8px;padding:.25rem .45rem;flex:none;margin-top:.1rem}
@media(max-width:760px){.out-grid{grid-template-columns:minmax(0,1fr)}}
.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem}
@media(max-width:760px){.two-col{grid-template-columns:minmax(0,1fr)}}

/* tracker */
.tracker{border:1px solid rgba(255,255,255,.14);border-radius:26px;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));padding:clamp(1.3rem,3vw,2rem);position:relative;overflow:hidden;margin-bottom:2.2rem}
.tracker::before{content:"";position:absolute;width:420px;height:420px;right:-160px;top:-200px;border-radius:50%;background:var(--cc);filter:blur(110px);opacity:.25;pointer-events:none}
.tr-top{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;position:relative}
.tr-lab{font-family:var(--f-mono);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:#8da0c8}
.ascii{font-family:var(--f-mono);font-size:clamp(.78rem,2.5vw,1.25rem);letter-spacing:.04em;margin-top:1.1rem;color:var(--cc);text-shadow:0 0 18px color-mix(in srgb,var(--cc) 60%,transparent);white-space:nowrap;overflow:hidden;position:relative}
.ascii b{color:#fff;font-weight:500;margin-left:.6rem}
.tracker .pbar{margin-top:.9rem;height:9px}
.tr-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem;margin-top:1.4rem;position:relative}
.tr-stats div{padding:.9rem 1rem;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08)}
.tr-stats b{font-size:1.5rem;font-weight:650;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1}
.tr-stats b em{font-style:normal;color:#8da0c8;font-weight:400;font-size:1rem}
.tr-stats>div>span{display:block;font-size:.78rem;color:#8da0c8;font-family:var(--f-mono);text-transform:uppercase;letter-spacing:.05em;margin-top:.15rem}
.tr-hint{margin-top:1.1rem;font-size:.86rem;color:#8da0c8;position:relative}
.tr-btns{display:flex;gap:.6rem;flex-wrap:wrap}
.tr-btns .btn{padding:.55rem .95rem;font-size:.88rem}

/* syllabus tree */
.phase-t{display:flex;align-items:center;gap:.8rem;font-family:var(--f-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:2.2rem 0 .9rem}
.phase-t::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line2),transparent)}
.mod{--mc:var(--c-or);border:1px solid var(--line);border-left:3px solid var(--mc);border-radius:16px;background:var(--surface);margin-bottom:.7rem;overflow:hidden;transition:border-color .2s,background .2s}
.mod[open]{background:linear-gradient(180deg,color-mix(in srgb,var(--mc) 7%,var(--surface)),var(--surface) 140px)}
.mod:hover{border-color:color-mix(in srgb,var(--mc) 55%,var(--line))}
.mod>summary{list-style:none;display:grid;grid-template-columns:auto minmax(0,1fr) 110px auto auto auto auto;gap:.9rem;align-items:center;padding:1rem 1.15rem;cursor:pointer}
.mod>summary::-webkit-details-marker{display:none}
.mod .mn{font-family:var(--f-mono);font-size:.8rem;font-weight:500;color:var(--mc);background:color-mix(in srgb,var(--mc) 14%,transparent);border-radius:9px;padding:.3rem .55rem}
.mod .t{font-weight:600;min-width:0}
.mod .mp{height:5px;border-radius:9px;background:var(--line);overflow:hidden}
.mod .mp i{display:block;height:100%;width:0;background:var(--mc);border-radius:inherit;transition:width .5s}
.mod .mc{font-family:var(--f-mono);font-size:.74rem;color:var(--muted);white-space:nowrap}
.mod .rng{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);white-space:nowrap}
.mod .st{font-family:var(--f-mono);width:1.2rem;text-align:center;color:var(--muted)}
.mod .st::before{content:"○"}
.mod[data-s="part"] .st::before{content:"◐";color:var(--c-am)}
.mod[data-s="done"] .st::before{content:"✓";color:var(--c-gr)}
.mod>summary>.i{transition:transform .25s;color:var(--muted)}
.mod[open]>summary>.i{transform:rotate(180deg)}
@media(max-width:700px){.mod>summary{grid-template-columns:auto minmax(0,1fr) auto auto auto}.mod .mp,.mod .rng{display:none}}
.tree{padding:.2rem 1.15rem 1rem 1.15rem}
.les{position:relative;display:grid;grid-template-columns:26px minmax(0,1fr);gap:.9rem;padding:.7rem 0 .7rem 1.3rem;border-radius:10px;transition:background .3s}
.les::before{content:"";position:absolute;left:-.2rem;top:1.45rem;width:1rem;border-top:1px dashed var(--line2)}
.les::after{content:"";position:absolute;left:-.2rem;top:0;bottom:0;border-left:1px dashed var(--line2)}
.les:last-child::after{bottom:auto;height:1.45rem}
.les.flash{background:color-mix(in srgb,var(--mc) 18%,transparent)}
.chk{width:24px;height:24px;border-radius:8px;border:1.5px solid var(--line2);background:transparent;display:grid;place-items:center;color:transparent;transition:all .2s;margin-top:.15rem;padding:0}
.chk .i{width:15px;height:15px;stroke-width:3}
.chk:hover{border-color:var(--mc)}
.chk[aria-pressed="true"]{background:linear-gradient(135deg,var(--c-gr),#86efac);border-color:transparent;color:#04150a;box-shadow:0 0 16px -2px var(--c-gr)}
.les h4{font-size:1rem;font-weight:600;line-height:1.4;display:flex;flex-wrap:wrap;gap:.2rem .6rem;align-items:center}
.les .d{font-family:var(--f-mono);font-size:.72rem;color:var(--mc);font-weight:500}
.les p{font-size:.9rem;color:var(--muted);margin-top:.2rem}
.les .bd{margin-top:.45rem;display:inline-flex}
.les.done h4 b{text-decoration:line-through;text-decoration-color:var(--line2);opacity:.65}
.cur-tools{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;flex-wrap:wrap;margin-bottom:1.6rem}

.sticky-bar{position:fixed;left:0;right:0;bottom:0;z-index:85;background:rgba(5,8,19,.9);backdrop-filter:blur(14px);border-top:1px solid rgba(255,255,255,.12);color:#eaf0ff;padding:.7rem clamp(16px,4vw,32px) calc(.7rem + env(safe-area-inset-bottom,0px));display:flex;align-items:center;gap:1rem;justify-content:space-between;transform:translateY(110%);transition:transform .35s}
.sticky-bar.show{transform:none}
.sticky-bar .price{font-size:1.3rem}
.sticky-bar small{display:block;font-size:.75rem;color:#a3b0cf;line-height:1;margin-bottom:.2rem}
@media(min-width:900px){.sticky-bar{left:auto;right:max(16px,env(safe-area-inset-right,0px));bottom:16px;border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:.7rem .8rem .7rem 1.1rem;min-width:340px;box-shadow:0 20px 50px -20px #000}body.has-bar .fabs{bottom:calc(88px + env(safe-area-inset-bottom,0px))}}
@media(max-width:899px){body.has-bar{padding-bottom:70px}}

/* enroll */
.opts{display:grid;gap:.7rem}
.opt{display:flex;gap:.9rem;align-items:flex-start;border:1.5px solid var(--line);border-radius:16px;padding:1rem 1.1rem;cursor:pointer;background:var(--bg);transition:border-color .15s,background .15s}
.opt:hover{border-color:var(--line2)}
.opt:has(input:checked){border-color:var(--oc,var(--c-or));background:color-mix(in srgb,var(--oc,var(--c-or)) 9%,transparent)}
.opt input{margin-top:.35rem;accent-color:var(--c-or)}
.opt b{display:block;font-weight:600}
.opt span{font-size:.88rem;color:var(--muted)}
.opt .p{margin-left:auto;font-weight:650;white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--fg)}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:clamp(1.3rem,3vw,2rem);box-shadow:var(--shadow)}
.fld{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1rem;min-width:0}
.fld label,.fld legend{font-size:.85rem;font-weight:600}
.fld input,.fld select,.fld textarea{width:100%;font:inherit;font-size:1rem;background:var(--bg);color:var(--fg);border:1px solid var(--line2);padding:.8rem .9rem;border-radius:12px}
.fld textarea{resize:vertical;min-height:100px}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:2px solid var(--c-or);outline-offset:1px;border-color:transparent}
.fld.bad input{border-color:#ef4444}
.err{font-size:.82rem;color:#ef4444}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
@media(max-width:620px){.two{grid-template-columns:1fr}}
.enroll-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,56px);align-items:start}
@media(max-width:900px){.enroll-grid{grid-template-columns:1fr}}
.result{display:flex;flex-direction:column;align-items:flex-start;gap:.8rem;padding:.5rem 0}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}
.chan{display:flex;align-items:center;gap:1rem;padding:.95rem 1.1rem;border:1px solid var(--line);border-radius:16px;text-decoration:none;background:var(--surface);min-width:0;transition:border-color .2s,transform .2s}
a.chan:hover{border-color:var(--c-or);transform:translateY(-2px)}
.chan .ic{width:40px;height:40px}
.chan b{display:block;font-weight:600;font-size:.97rem}
.chan small{display:block;color:var(--muted);font-size:.85rem;overflow-wrap:anywhere}
.chan>div{min-width:0}
.stack{display:grid;gap:.7rem}

/* tables */
.scroll-x{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:.9rem 1.1rem;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
th{font-weight:600;font-size:.85rem;background:var(--surface2);white-space:nowrap}
td:first-child{font-weight:500;color:var(--muted)}
.cmp th:first-child,.cmp td:first-child{position:sticky;left:0;background:var(--surface);z-index:1;min-width:120px}
.cmp th:first-child{background:var(--surface2)}
.cmp td,.cmp th{min-width:210px}
.cmp td:first-child,.cmp th:first-child{min-width:120px}
.cmp th a{text-decoration:none;display:inline-flex;gap:.5rem;align-items:center}
.cmp th i{width:9px;height:9px;border-radius:50%;background:var(--cc)}

/* reveal */
.rv{transform:translateY(18px);transition:transform .8s cubic-bezier(.2,.7,.2,1);transition-delay:calc(var(--d,0)*70ms)}
.rv.in{transform:none}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}html{scroll-behavior:auto}.rv{transform:none}.marq-t{animation:none}}

.dk>.wrap{position:relative;z-index:1}

.ascii s{text-decoration:none;opacity:.28}

/* ===== v5: platform components ===== */
.subline{display:flex;gap:.6rem;align-items:center;margin-top:.9rem;font-family:var(--f-mono);font-size:.84rem;color:var(--c-am)}
section.dk::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;z-index:2;background:linear-gradient(90deg,transparent,rgba(255,122,61,.7),rgba(124,92,255,.7),transparent)}
.pbar[data-anim] i{width:0}.pbar[data-anim].in i{width:var(--w,0%)}
.cc-stats{display:flex;flex-wrap:wrap;gap:.3rem 1.1rem;font-size:.88rem;color:var(--muted)}
.cc-stats b{color:var(--fg);font-variant-numeric:tabular-nums;font-weight:650}
.comp-bar{display:flex;gap:3px;height:10px}
.comp-bar i{display:block;min-width:5px;border-radius:99px;background:var(--sc);transform:scaleX(0);transform-origin:0 50%;transition:transform 1s cubic-bezier(.2,.7,.2,1);transition-delay:calc(var(--k,0)*170ms);box-shadow:0 0 12px -2px var(--sc)}
.comp.in .comp-bar i{transform:none}
.comp-leg{display:flex;flex-wrap:wrap;gap:.3rem 1rem;margin-top:.7rem;font-size:.78rem;color:var(--muted)}
.comp-leg li{display:inline-flex;gap:.4rem;align-items:center}
.comp-leg i{width:8px;height:8px;border-radius:50%;background:var(--sc)}
.comp-leg small{font-family:var(--f-mono);opacity:.8}
.pl-top{display:flex;justify-content:space-between;align-items:center;gap:1rem;font-size:.74rem;letter-spacing:.06em}
.course-card .cc-stats{margin-top:-.2rem}

/* journey */
.jr{display:grid;gap:1.4rem}
.jr-rail{position:relative;display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:.5rem;padding-top:2.6rem}
.jr-rail::before{content:"";position:absolute;left:5%;right:5%;top:calc(2.6rem + 36px);height:2px;background:linear-gradient(90deg,var(--c-or),var(--c-am),var(--c-gr),var(--c-cy),var(--c-vi),var(--c-pk));opacity:.45}
.jn{position:relative;display:flex;flex-direction:column;align-items:center;gap:.4rem;padding:.2rem .2rem .6rem;background:transparent;border:0;text-align:center;transition:opacity .3s,filter .3s;color:var(--fg)}
.jn-ic{width:70px;height:70px;border-radius:21px;display:grid;place-items:center;background:#0b1224;border:1.5px solid color-mix(in srgb,var(--jc) 55%,transparent);color:var(--jc);transition:transform .25s,box-shadow .25s,background .25s;position:relative;z-index:1}
.jn-ic .i{width:27px;height:27px}
.jn b{font-weight:600;font-size:.92rem}
.jn small{font-family:var(--f-mono);font-size:.66rem;color:var(--muted)}
.jn:hover .jn-ic{transform:translateY(-4px);box-shadow:0 14px 30px -10px var(--jc)}
.jn.on .jn-ic{background:var(--jc);color:#07101c;box-shadow:0 0 0 5px rgba(255,255,255,.08),0 18px 40px -10px var(--jc)}
.jn.skip{opacity:.38;filter:saturate(.35)}
.jn-here{position:absolute;top:-2.3rem;left:50%;transform:translateX(-50%);display:none;align-items:center;gap:.3rem;white-space:nowrap;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.06em;text-transform:uppercase;color:#1c0b02;background:linear-gradient(135deg,#ffb020,#ff7a3d);padding:.28rem .6rem;border-radius:99px;font-weight:600;animation:bobx 1.8s ease-in-out infinite;z-index:3}
.jn-here .i{width:.95em;height:.95em}
.jn.on .jn-here{display:inline-flex}
.jn-here::after{content:"";position:absolute;left:50%;bottom:-4px;width:8px;height:8px;background:#ff9a3d;transform:translateX(-50%) rotate(45deg)}
@keyframes bobx{50%{transform:translate(-50%,-4px)}}
.jr-sum{font-family:var(--f-mono);font-size:.86rem;color:var(--c-am);text-align:center;min-height:1.6em}
.jp{position:relative;overflow:hidden;background:rgba(255,255,255,.045);border:1px solid color-mix(in srgb,var(--jc) 45%,rgba(255,255,255,.12));border-radius:26px;padding:clamp(1.3rem,3vw,2rem);animation:rise .45s both}
.jp::before{content:"";position:absolute;width:380px;height:380px;right:-140px;top:-180px;border-radius:50%;background:var(--jc);filter:blur(100px);opacity:.22;pointer-events:none}
.jp>*{position:relative}
.jp-h{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.9rem}
.jp h3{font-size:clamp(1.4rem,2.6vw,1.9rem);letter-spacing:-.03em}
.jp-l{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;margin:1.2rem 0}
.jp-l a{display:flex;gap:.7rem;align-items:baseline;padding:.65rem .85rem;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.035);text-decoration:none;font-size:.92rem;transition:border-color .2s,transform .2s}
.jp-l a:hover{border-color:var(--jc);transform:translateY(-2px)}
.jp-l .d{font-family:var(--f-mono);font-size:.7rem;color:var(--jc);flex:none}
.jp-ai{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.8rem}
@media(max-width:1000px){.jr-rail{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:2.6rem}.jr-rail::before{display:none}.jp-l{grid-template-columns:minmax(0,1fr)}}

/* what you'll build ladder */
.sticky-col{position:sticky;top:110px}
@media(max-width:900px){.sticky-col{position:static}}
.ladd{position:relative;display:grid;gap:1.1rem}
.ladd::before{content:"";position:absolute;left:27px;top:24px;bottom:24px;width:2px;border-radius:2px;background:linear-gradient(var(--c-or),var(--c-am),var(--c-gr),var(--c-cy),var(--c-vi),var(--c-pk));opacity:.6}
.ladd::after{content:"";position:absolute;left:23px;top:6px;width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 0 14px 4px var(--c-am);animation:travel 7s linear infinite;z-index:2}
@keyframes travel{0%{top:6px;opacity:0}8%{opacity:1}92%{opacity:1}100%{top:calc(100% - 16px);opacity:0}}
.bn{display:grid;grid-template-columns:56px minmax(0,1fr);gap:1rem;align-items:start}
.bn-ic{width:56px;height:56px;border-radius:17px;display:grid;place-items:center;background:var(--bg2);border:1.5px solid var(--bc);color:var(--bc);position:relative;z-index:1;box-shadow:0 10px 24px -12px var(--bc)}
.bn-ic .i{width:24px;height:24px}
.bn-card{display:flex;flex-direction:column;gap:.5rem;padding:1.2rem 1.3rem;border-radius:18px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--bc);text-decoration:none;transition:transform .25s,border-color .25s;min-width:0}
.bn-card:hover{transform:translateX(5px);border-color:var(--bc)}
.bn-card small{font-family:var(--f-mono);font-size:.72rem;color:var(--bc);letter-spacing:.06em}
.bn-card p{font-size:.94rem;color:var(--muted)}
.bn-card .chip{font-size:.72rem}

/* lesson cards + status */
.tree{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;padding:.3rem 1.15rem 1.15rem}
.tree:has(.les:only-child){grid-template-columns:minmax(0,1fr)}
@media(max-width:760px){.tree{grid-template-columns:minmax(0,1fr)}}
.les{position:relative;display:grid;grid-template-columns:26px minmax(0,1fr);gap:.8rem;padding:.9rem .95rem;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.035);transition:border-color .25s,background .25s,opacity .25s,transform .2s,box-shadow .25s}
.les::before,.les::after{display:none}
details[open]>.tree>.les{animation:rise .5s both;animation-delay:calc(var(--k,0)*55ms)}
.les:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--mc) 55%,var(--line))}
.les-top{display:flex;justify-content:space-between;gap:.5rem;align-items:center}
.stt{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.les[data-st="todo"] .stt::before{content:"Not started"}
.les[data-st="now"] .stt::before{content:"In progress";color:var(--c-am)}
.les[data-st="done"] .stt::before{content:"Completed";color:var(--c-gr)}
.les[data-st="lock"] .stt::before{content:"Locked"}
.les[data-st="done"]{border-color:color-mix(in srgb,var(--c-gr) 45%,transparent);background:color-mix(in srgb,var(--c-gr) 7%,transparent)}
.les[data-st="now"]{border-color:var(--c-am);background:color-mix(in srgb,var(--c-am) 9%,transparent);box-shadow:0 12px 30px -16px var(--c-am)}
.les[data-st="lock"]{opacity:.5}
.les h4{display:block;font-size:.98rem;margin-top:.25rem}
.les-bd{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.55rem}
.les-bd:empty{display:none}
.les .bd{margin-top:0}
.chk .lk{display:none}
.les[data-st="lock"] .chk .ck{display:none}
.les[data-st="lock"] .chk .lk{display:block;color:var(--muted);stroke-width:2}
.les[data-st="lock"] .chk{border-style:dashed}
.chk:disabled{cursor:not-allowed}
.bd.lab,.bd.cap,.bd.chk{display:inline-flex;gap:.3rem;align-items:center}
.bd svg{width:.95em;height:.95em}
.bd.lab{--bc:var(--c-or)}
.dotd.now{animation:pulsedot 1.4s ease-in-out infinite}
@keyframes pulsedot{50%{box-shadow:0 0 0 4px color-mix(in srgb,var(--mc) 35%,transparent)}}
.lg{display:flex;flex-wrap:wrap;gap:.5rem 1.3rem;font-size:.84rem;color:var(--muted);margin:1.3rem 0 0}
.lg li{display:inline-flex;align-items:center;gap:.5rem}
.lg i{width:12px;height:12px;border-radius:50%}
.s-done{background:var(--c-gr);box-shadow:0 0 10px var(--c-gr)}
.s-now{background:var(--c-am);box-shadow:0 0 10px var(--c-am)}
.s-todo{border:1.5px solid var(--line2)}
.lg-ic{display:grid;place-items:center;width:22px;height:22px;border-radius:7px;background:var(--surface2)}
.lg-ic .i{width:13px;height:13px}
.lg-ic.lab{color:var(--c-or)}.lg-ic.prj{color:var(--c-pk)}
.tr-btns .btn[aria-pressed="true"]{border-color:var(--c-am);color:var(--c-am);background:color-mix(in srgb,var(--c-am) 12%,transparent)}
.tr-btns .btn .i{width:1em;height:1em}

/* v6 */
.byline{display:flex;align-items:center;gap:.8rem;margin:1.6rem 0 0}
.byline img{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.25);box-shadow:0 0 0 4px rgba(255,106,43,.25)}
.byline b{display:block;color:#fff;font-weight:600;font-size:.95rem}.byline span{color:#9fb0d6;font-size:.82rem}
.path{display:flex;flex-direction:column;gap:.6rem;padding:1.5rem;border-radius:20px;border:1px solid var(--line);background:var(--surface);text-decoration:none;color:inherit;border-top:3px solid var(--pc);transition:transform .25s,box-shadow .25s}
.path:hover{transform:translateY(-4px);box-shadow:0 24px 50px -28px var(--pc)}
.path .mono{font-size:.72rem;letter-spacing:.06em;color:var(--pc);text-transform:uppercase}
.path h3{font-size:1.2rem;line-height:1.3;margin:0}.path p{margin:0;color:var(--muted)}.path .go{margin-top:auto;padding-top:.6rem}
.where{padding-top:3.5rem}
.ph-frame{border-radius:26px;overflow:hidden;border:1px solid rgba(255,255,255,.16);box-shadow:0 30px 80px -30px #000,0 0 60px -20px rgba(255,106,43,.5)}
.ph-frame img{display:block;width:100%;height:auto}

/* v8: books */
.bk-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,64px);align-items:center}
@media(max-width:900px){.bk-hero{grid-template-columns:minmax(0,1fr)}.bk-side{max-width:340px}}
.bk-cover{position:relative;aspect-ratio:3/4;border-radius:6px 14px 14px 6px;padding:clamp(1.1rem,3vw,1.7rem) clamp(1rem,2.6vw,1.5rem) clamp(1.1rem,3vw,1.7rem) clamp(1.3rem,3.2vw,1.9rem);display:flex;flex-direction:column;gap:.7rem;overflow:hidden;
  border:1px solid var(--line2);box-shadow:0 30px 70px -28px #000,0 0 60px -24px var(--c-or);
  background:radial-gradient(120% 80% at 100% 0%,color-mix(in srgb,var(--c-or) 38%,transparent),transparent 60%),radial-gradient(90% 70% at 0% 100%,color-mix(in srgb,var(--c-vi) 40%,transparent),transparent 60%),var(--bg2)}
.bk-cover::before{content:"";position:absolute;inset:0 auto 0 0;width:12px;background:linear-gradient(90deg,rgba(255,255,255,.14),transparent)}
.bk-cover b{font-size:clamp(1.7rem,4.2vw,2.5rem);line-height:1.04;letter-spacing:-.035em;font-weight:700;color:var(--fg);margin-top:auto}
.bk-top,.bk-by{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.bk-sub{font-size:.88rem;line-height:1.4;color:var(--muted)}
.bk-by{color:var(--c-am)}
.bk-img img{border-radius:6px 14px 14px 6px;box-shadow:0 30px 70px -28px #000;width:100%;aspect-ratio:3/4;object-fit:cover}
.book-card .bk-cover,.book-card .bk-img{max-width:240px;margin:0 auto .4rem}
.bk-subt{font-weight:500;color:var(--fg)!important}
.bk-soon{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.04em;color:var(--muted);text-transform:uppercase}
.bk-was{font-size:.95rem;font-weight:400;color:var(--muted);margin-left:.6rem}
.bk-facts{display:flex;flex-wrap:wrap;gap:.9rem 2rem;margin:1.8rem 0 0}
.bk-facts dt{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.bk-facts dd{margin:.15rem 0 0;font-size:.95rem;color:var(--fg)}
.toc{display:grid;gap:.6rem;counter-reset:none}
.toc li{display:flex;gap:1rem;align-items:baseline;padding:.9rem 1.1rem;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.toc .n{font-family:var(--f-mono);font-size:.78rem;color:var(--c-or);flex:none}
.book-notify .bn-ok{margin-top:1rem;color:var(--ok);font-weight:600}
.book-notify .bn-bad{margin-top:1rem;color:var(--muted)}
.book-notify .lbl{margin-right:.2rem}
.bk-lg{max-width:380px;margin-inline:auto}