/* ================= HOME ================= */
.hero{position:relative;padding:calc(var(--head-h) + 56px) 0 64px;overflow:hidden}
.hero-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(87,168,221,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(87,168,221,.05) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 75%);
          mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 75%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero-h1{font:700 clamp(58px,9.5vw,118px)/.95 var(--disp);letter-spacing:-.03em;margin:20px 0 18px}
.hero-sub{color:var(--muted);font-size:17.5px;max-width:46ch}
.hero-meta{list-style:none;display:flex;flex-wrap:wrap;gap:0;margin:28px 0 30px;border:1px solid var(--line);border-radius:8px;width:max-content;max-width:100%;overflow:hidden}
.hero-meta li{padding:14px 22px;border-right:1px solid var(--line)}
.hero-meta li:last-child{border-right:0}
.hero-meta b{display:block;font:700 26px/1 var(--disp);color:var(--accent)}
.hero-meta span{font:500 10px/1.5 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-term{align-self:center}
@media (max-width:1060px){.hero-in{grid-template-columns:1fr;gap:44px}}

/* spec list (man-page flavour) */
.spec{border:1px solid var(--line);border-radius:8px;overflow:hidden}
.spec>div{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line2);align-items:baseline}
.spec>div:last-child{border-bottom:0}
.spec dt{font:500 11.5px/1.4 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.spec dd{font-size:14px;color:var(--muted)}
.duo{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
@media (max-width:980px){.duo{grid-template-columns:1fr;gap:36px}}
.prose p{color:var(--muted);margin-bottom:18px;max-width:60ch}
.prose p strong{color:var(--text)}
.prose .hl{color:var(--accent)}

/* EOL banner */
.eol{position:relative;overflow:hidden;border:1px solid rgba(224,88,74,.4);border-radius:12px;padding:36px 38px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;
  background:linear-gradient(180deg,rgba(224,88,74,.10),rgba(224,88,74,.02))}
.eol::before{content:'';position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(-45deg,rgba(224,88,74,.05) 0 12px,transparent 12px 24px)}
.eol h3{font:700 clamp(24px,3vw,34px)/1.1 var(--disp);color:var(--text);margin:12px 0 10px}
.eol p{color:var(--muted);font-size:14.5px;max-width:56ch}
.stamps{display:flex;gap:16px;position:relative;z-index:1}
.stamp{border:2px solid rgba(224,88,74,.6);border-radius:6px;padding:12px 18px;font:500 12px/1.6 var(--mono);letter-spacing:.1em;color:var(--danger);text-align:center;transform:rotate(-2deg);background:rgba(10,14,19,.5)}
.stamp.alt{transform:rotate(1.6deg)}
.migr{margin-top:14px;font:400 13px/1.8 var(--mono);color:var(--muted)}
.migr b{color:var(--accent);font-weight:500}
@media (max-width:920px){.eol{grid-template-columns:1fr}.stamps{justify-content:flex-start}}

/* use-cases */
.uses{border-top:1px solid var(--line)}
.use{display:grid;grid-template-columns:64px 1fr auto;gap:22px;align-items:center;padding:22px 12px;border-bottom:1px solid var(--line2);transition:background .25s,transform .25s}
.use:hover{background:var(--panel);transform:translateX(8px)}
.use-n{font:700 26px/1 var(--disp);color:var(--faint);transition:color .25s}
.use:hover .use-n{color:var(--accent)}
.use h4{font:600 17px/1.3 var(--disp);margin-bottom:4px}
.use p{color:var(--muted);font-size:14px;max-width:58ch}
@media (max-width:640px){.use{grid-template-columns:44px 1fr}.use .tag{display:none}}

/* stats band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.stat{padding:28px 26px;border-right:1px solid var(--line);transition:background .25s}
.stat:last-child{border-right:0}
.stat:hover{background:var(--panel)}
.stat b{display:block;font:700 clamp(32px,3.6vw,44px)/1 var(--disp);color:var(--accent)}
.stat span{font:500 10.5px/1.5 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
@media (max-width:820px){.stats{grid-template-columns:1fr 1fr}.stat:nth-child(2){border-right:0}.stat{border-bottom:1px solid var(--line)}.stat:nth-child(n+3){border-bottom:0}}

/* ================= HISTORY ================= */
.hist-grid{display:grid;grid-template-columns:300px minmax(0,1fr);gap:56px;align-items:start}
.hist-left{position:sticky;top:calc(var(--head-h) + 26px)}
.era-year{font:700 clamp(46px,5vw,72px)/1 var(--disp);letter-spacing:-.02em;color:var(--text)}
.era-year.era-swap{animation:eraSwap .45s ease}
@keyframes eraSwap{from{opacity:0;transform:translateY(12px)}}
.era-name{font:500 12px/1.5 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:8px 0 18px;min-height:1.5em}
.era-track{width:3px;height:150px;background:var(--line2);border-radius:2px;position:relative;margin:0 0 0 2px}
#eraFill{position:absolute;top:0;left:0;width:100%;height:0;border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--ok));transition:height .35s ease}
.era-legend{list-style:none;margin-top:18px;border-top:1px solid var(--line)}
.era-legend li{font:400 11px/1.4 var(--mono);color:var(--faint);padding:8px 0 8px 12px;border-bottom:1px solid var(--line2);letter-spacing:.06em}
.tl-track{position:relative;padding-left:44px}
.tl-track::before{content:'';position:absolute;left:12px;top:6px;bottom:6px;width:2px;background:var(--line2)}
.tl-item{position:relative;padding:30px 0}
.tl-item::before{content:'';position:absolute;left:-38px;top:38px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--accent-dim);transition:.35s}
.tl-item.in::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 16px var(--accent-glow)}
.tl-year{font:500 12px/1 var(--mono);letter-spacing:.16em;color:var(--accent);text-transform:uppercase}
.tl-item h3{font:700 clamp(20px,2.4vw,26px)/1.2 var(--disp);margin:9px 0 9px}
.tl-item p{color:var(--muted);max-width:62ch;font-size:15px}
.tl-img{margin-top:16px;max-width:520px}
@media (max-width:980px){.hist-grid{grid-template-columns:1fr}.hist-left{position:static}.era-track{display:none}.era-legend{display:none}}

/* ================= COMMANDS ================= */
.cmd-toolbar{position:sticky;top:var(--head-h);z-index:100;background:rgba(10,14,19,.92);backdrop-filter:blur(9px);border-block:1px solid var(--line2);padding:16px 0}
.cmd-tools{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.search{position:relative;flex:1;min-width:250px}
.search input{width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:6px;color:var(--text);font:400 14px/1 var(--mono);padding:12px 48px 12px 15px;transition:border-color .2s,box-shadow .2s}
.search input:focus{outline:none;border-color:var(--accent-dim);box-shadow:0 0 0 3px var(--accent-glow)}
.search kbd{position:absolute;right:12px;top:50%;transform:translateY(-50%);font:500 11px/1 var(--mono);color:var(--faint);border:1px solid var(--line);border-radius:4px;padding:3px 8px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font:500 11.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;padding:8px 14px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:transparent;cursor:pointer;transition:.2s}
.chip:hover{color:var(--text);border-color:var(--accent-dim)}
.chip.active{background:var(--accent);border-color:var(--accent);color:#08131b}
.cmd-count{font:400 11.5px/1 var(--mono);color:var(--faint);letter-spacing:.1em;margin-left:auto}
.cmd-cat{margin-top:46px}
.cmd-cat-h{display:flex;align-items:baseline;gap:14px;font:700 20px/1 var(--disp);padding-bottom:12px;border-bottom:1px solid var(--line)}
.cmd-cat-n{font:500 11px/1 var(--mono);color:var(--faint);letter-spacing:.14em}
.cmd{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:20px 22px;margin-top:16px;transition:border-color .25s,transform .25s}
.cmd:hover{border-color:var(--accent-dim);transform:translateY(-3px)}
.cmd-top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.cmd-name{font:500 15px/1.3 var(--mono);color:var(--accent);letter-spacing:.02em}
.cmd-syn{font:400 13px/1.7 var(--mono);color:var(--text);background:var(--bg2);border:1px solid var(--line2);border-radius:6px;padding:11px 15px;margin:13px 0 11px;white-space:pre-wrap}
.cmd-desc{font-size:14px;color:var(--muted);max-width:74ch}
.cmd-tags{margin-top:12px;display:flex;gap:6px;flex-wrap:wrap}
.cmd-out{margin-top:14px;font:400 12.5px/1.7 var(--mono);color:#9fb4c6;background:#05080c;border:1px solid #14202b;border-radius:6px;padding:13px 16px;white-space:pre-wrap}
.cmd-out::before{content:'▸ sample output';display:block;font:500 10px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--ok);margin-bottom:9px}
.cmd-empty{padding:60px 0;text-align:center;color:var(--faint);font:400 14px/1.6 var(--mono)}

/* ================= INSTALL ================= */
.steps-nav{display:flex;flex-wrap:wrap;gap:8px}
.snav{font:500 11.5px/1 var(--mono);letter-spacing:.1em;padding:9px 15px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:transparent;cursor:pointer;transition:.2s}
.snav:hover{color:var(--text);border-color:var(--accent-dim)}
.snav.active{background:var(--accent);border-color:var(--accent);color:#08131b}
.snav.done{color:var(--ok);border-color:rgba(63,217,133,.5)}
.sp-track{height:4px;background:var(--line2);border-radius:2px;overflow:hidden;margin:20px 0 10px}
.sp-fill{display:block;height:100%;width:16.6%;background:linear-gradient(90deg,var(--accent),var(--ok));transition:width .45s cubic-bezier(.2,.7,.2,1)}
.sp-label{font:500 11px/1 var(--mono);letter-spacing:.2em;color:var(--accent)}
.step-stage{margin-top:26px}
.step{display:none}
.step.active{display:block;animation:stepIn .45s cubic-bezier(.2,.8,.2,1) both}
@keyframes stepIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.step-stephead{display:flex;align-items:center;gap:16px;margin-bottom:14px}
.step-num{font:500 12px/1 var(--mono);letter-spacing:.16em;color:var(--accent);border:1px solid var(--accent-dim);border-radius:4px;padding:7px 11px}
.step h3{font:700 clamp(22px,2.8vw,30px)/1.2 var(--disp)}
.step .lead{color:var(--muted);max-width:70ch;margin-bottom:6px}
.callout{border:1px solid;border-left-width:3px;border-radius:6px;padding:15px 18px;margin:18px 0;font-size:14px;color:var(--text)}
.callout .cl{display:block;font:500 10px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;margin-bottom:8px}
.callout.tip{border-color:var(--accent-dim);background:rgba(87,168,221,.06)}
.callout.tip .cl{color:var(--accent)}
.callout.warn{border-color:rgba(230,163,60,.5);background:rgba(230,163,60,.07)}
.callout.warn .cl{color:var(--warn)}
.callout.danger{border-color:rgba(224,88,74,.55);background:rgba(224,88,74,.07)}
.callout.danger .cl{color:var(--danger)}
.inst-list{list-style:none;counter-reset:sl;margin:14px 0}
.inst-list li{counter-increment:sl;display:grid;grid-template-columns:34px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--line2);color:var(--muted);font-size:14.5px;align-items:baseline}
.inst-list li::before{content:counter(sl,decimal-leading-zero);font:500 12px/1.6 var(--mono);color:var(--accent)}
.step-duo{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:34px;align-items:start}
@media (max-width:980px){.step-duo{grid-template-columns:1fr}}

/* ================= TIPS ================= */
.stack{display:flex;flex-direction:column;gap:20px}
.scard{position:sticky;top:calc(var(--head-h) + 26px + var(--i)*18px);background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:26px 30px;box-shadow:0 -18px 44px rgba(4,8,12,.55);transition:border-color .25s}
.scard:hover{border-color:var(--accent-dim)}
.scard-top{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:10px}
.scard-n{font:700 24px/1 var(--disp);color:var(--accent)}
.scard h3{font:700 clamp(18px,2.2vw,23px)/1.25 var(--disp)}
.scard p{color:var(--muted);font-size:14.5px;max-width:70ch}
.scard .cmd-chip{display:inline-block;margin-top:14px;font:400 13px/1 var(--mono);color:var(--ok);background:#05080c;border:1px solid #14202b;border-radius:6px;padding:9px 14px}
.rail{display:grid;grid-template-columns:repeat(5,1fr);position:relative}
.rail::before{content:'';position:absolute;top:31px;left:4%;right:4%;height:1px;background:var(--line)}
.rail-item{position:relative;padding:0 16px}
.rail-n{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--accent-dim);background:var(--bg);font:500 12px/1 var(--mono);color:var(--accent);position:relative;z-index:1;margin-bottom:14px;transition:.25s}
.rail-item:hover .rail-n{background:var(--accent);color:#08131b}
.rail-item h4{font:600 15.5px/1.3 var(--disp);margin-bottom:6px}
.rail-item p{font-size:13px;color:var(--muted)}
@media (max-width:920px){.rail{grid-template-columns:1fr;gap:26px}.rail::before{display:none}}
.hcheck{display:flex;align-items:flex-start;gap:14px;padding:14px 8px;border-bottom:1px solid var(--line2);cursor:pointer;transition:background .2s}
.hcheck:hover{background:rgba(87,168,221,.04)}
.hcheck input{position:absolute;opacity:0;width:1px;height:1px}
.hbox{width:20px;height:20px;flex:none;border:1px solid var(--line);border-radius:4px;position:relative;margin-top:3px;transition:.2s}
.hbox::after{content:'✓';position:absolute;inset:0;display:grid;place-items:center;color:#08131b;font:700 12px/1 var(--mono);opacity:0;transition:opacity .15s}
.hcheck input:checked~.hbox{background:var(--accent);border-color:var(--accent)}
.hcheck input:checked~.hbox::after{opacity:1}
.hcheck input:checked~.hcx .hct{color:var(--faint);text-decoration:line-through}
.hcheck input:focus-visible~.hbox{box-shadow:0 0 0 3px var(--accent-glow)}
.hcx{display:flex;flex-direction:column;gap:3px}
.hct{font:600 14.5px/1.4 var(--disp);color:var(--text);transition:.2s}
.hcd{font:400 12.5px/1.5 var(--mono);color:var(--faint)}
.harden-box{border:1px solid var(--line);border-radius:10px;padding:26px 28px;background:var(--panel)}
.harden-head{display:flex;justify-content:space-between;align-items:baseline;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.harden-head span{font:500 12px/1 var(--mono);letter-spacing:.14em;color:var(--ok)}
.hcheck-list{list-style:none}
@media (max-width:700px){.scard{position:static;box-shadow:none}}