/* Proto&Go! — página Recursos (16-09-2026). Hereda tokens de pg.css. */

/* ---------- cabecera ---------- */
.rhero .wrap{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(28px,5vw,88px);align-items:end}
.rhero h1{max-width:16ch}
.rindex{display:flex;flex-direction:column;border-top:1px solid var(--line-strong)}
.rindex a{display:grid;grid-template-columns:auto 1fr auto;grid-template-rows:auto auto;column-gap:16px;align-items:center;padding:14px 4px;border-bottom:1px solid var(--line);transition:padding .35s var(--ease),background .35s}
.rindex a:hover{padding-left:12px;background:linear-gradient(90deg,var(--orange-soft),transparent 70%)}
.rindex .n{grid-row:1/3;font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;color:#9c5800}
.rindex b{font-family:var(--display);font-variation-settings:'wdth' 110;font-weight:600;font-size:1.15rem;letter-spacing:-.02em}
.rindex .k{grid-column:2;font-size:.84rem;color:var(--steel)}
.rindex svg{grid-row:1/3;grid-column:3;width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .35s var(--ease)}
.rindex a:hover svg{transform:translateY(3px)}

/* ---------- 01 calculadoras ---------- */
.rsec-calc{padding-top:clamp(40px,5vw,72px)}
.rcalcs{display:grid;grid-template-columns:1fr;gap:18px}
.rcalc{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);border-radius:var(--r);background:#fff;overflow:hidden;transition:box-shadow .5s var(--ease)}
.rcalc::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px var(--line);pointer-events:none;transition:box-shadow .5s var(--ease)}
.rcalc:hover{box-shadow:0 30px 60px -40px rgba(30,32,35,.45)}
.rcalc:hover::after{box-shadow:inset 0 0 0 1px var(--line-strong)}
.rc-left{display:flex;flex-direction:column;gap:22px;padding:clamp(22px,2.6vw,36px);align-items:flex-start}
.rc-left header{display:flex;flex-direction:column;gap:8px}
.rc-left h3{font-size:clamp(1.4rem,2vw,1.8rem)}
.rc-controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center;width:100%}
.rc-d{display:flex;align-items:center;gap:6px;height:48px;padding:0 14px;border-radius:999px;background:var(--paper);box-shadow:inset 0 0 0 1px var(--line-strong);transition:box-shadow .3s}
.rc-d:focus-within{box-shadow:inset 0 0 0 1.5px var(--ink)}
.rc-d .sym{font-family:var(--display);font-weight:600;font-size:1.1rem;color:var(--orange-deep)}
.rc-d input{width:5.2ch;border:0;background:none;font-family:var(--display);font-variation-settings:'wdth' 110;font-weight:600;font-size:1.25rem;letter-spacing:-.02em;font-variant-numeric:tabular-nums;outline:none;padding:0}
.rc-d .u{font-family:var(--mono);font-size:.68rem;color:var(--steel)}
.rc-chips{display:flex;flex-wrap:wrap;gap:6px}
.rc-chips button{height:40px;min-width:48px;padding:0 13px;border-radius:999px;font-family:var(--mono);font-size:.82rem;font-weight:500;letter-spacing:.02em;box-shadow:inset 0 0 0 1px var(--line-strong);transition:background .3s,color .3s,box-shadow .3s,transform .3s var(--ease)}
.rc-chips button:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1px var(--ink)}
.rc-chips button[aria-checked="true"]{background:var(--ink);color:var(--paper);box-shadow:none}
.rc-chips button.shaft{font-style:normal}
.rc-chips button:focus-visible,.guide-lang button:focus-visible,.fc-grid button:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.rc-result{width:100%;display:flex;flex-direction:column;gap:16px;border-top:1px solid var(--line);padding-top:20px}
.rc-code{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.rc-code span{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.rc-code b{font-family:var(--mono);font-size:.95rem;font-weight:600}
.rc-code .type{font-family:var(--body);font-size:.8rem;font-weight:600;letter-spacing:0;text-transform:none;padding:5px 10px;border-radius:4px;background:var(--orange-soft);color:#9c5800}
.rc-code .type.inter{background:#e7eefc;color:#2f4f8f}.rc-code .type.trans{background:var(--paper-2);color:var(--graphite)}
.rc-lims{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,3vw,40px)}
.rc-lims > div{display:flex;flex-direction:column;gap:4px}
.rc-lims .lbl{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.rc-lims b{font-family:var(--display);font-variation-settings:'wdth' 112;font-weight:600;font-size:clamp(2.1rem,4vw,3.4rem);letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:6px;white-space:nowrap}
.rc-lims b small{font-family:var(--mono);font-size:.72rem;font-weight:400;letter-spacing:.04em;color:var(--steel)}
.rc-lims .dev{font-family:var(--mono);font-size:.78rem;color:var(--orange-deep)}
.rc-err{font-size:.9rem;color:#8a1c1c;background:#fdeeee;padding:10px 14px;border-radius:4px}
.rc-err[hidden]{display:none}
.rcalc.stale .rc-lims,.rcalc.stale .rc-viz .rz-band{opacity:.25}
.rc-left .btn{margin-top:auto}

/* zona de tolerancia viva */
.rc-viz{position:relative;background-color:#f1f1ee;border-left:1px solid var(--line);padding:clamp(22px,2.6vw,36px);display:flex;align-items:stretch;background-image:linear-gradient(rgba(30,32,35,.06) 1px,transparent 1px);background-size:100% 28px}
.rz{position:relative;flex:1;min-height:250px;--zero:50%}
.rz-zero{position:absolute;left:0;right:0;top:var(--zero);height:0;border-top:1.5px solid var(--ink);transition:top .7s var(--ease)}
.rz-zero i{display:none}
.rz-zero::after{content:"Línea cero";position:absolute;right:0;top:6px;font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.rz-band{position:absolute;left:28%;width:44%;top:var(--top,30%);height:var(--h,20%);min-height:3px;border-radius:3px;background:rgba(240,138,2,.88);transition:top .7s var(--ease),height .7s var(--ease),opacity .3s;box-shadow:0 20px 40px -24px rgba(201,114,0,.8)}
.rz-band.shaft{background:rgba(30,32,35,.86);box-shadow:0 20px 40px -24px rgba(0,0,0,.6)}
.rz.two .rz-zero::after{display:none}
.rz.two .rz-band.hole{left:14%;width:32%}
.rz.two .rz-band.shaft{left:54%;width:32%}
.rz-band em{position:absolute;right:calc(100% + 8px);font-family:var(--mono);font-size:.68rem;font-style:normal;white-space:nowrap;color:var(--ink-2);font-variant-numeric:tabular-nums}
.rz-band em.t{top:-.55em}.rz-band em.b{bottom:-.55em}
.rz.two .rz-band.shaft em{right:auto;left:calc(100% + 8px)}
.rz-band strong{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-family:var(--mono);font-size:.74rem;font-weight:600;color:#fff;white-space:nowrap;pointer-events:none}
.rz-band.thin strong{top:auto;bottom:calc(100% + 18px);transform:translateX(-50%);color:var(--ink)}
.rz:not(.two) .rz-band::after{content:"";position:absolute;inset:0;border-radius:inherit;background:repeating-linear-gradient(135deg,transparent 0 6px,rgba(255,255,255,.18) 6px 7px)}

/* ---------- 02 guías ---------- */
.guides{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,3vw,40px)}
.guide{display:flex;flex-direction:column;border-radius:var(--r);box-shadow:inset 0 0 0 1px var(--line-on-ink);background:rgba(246,246,244,.025);overflow:hidden;transition:box-shadow .5s var(--ease),background .5s}
.guide:hover{box-shadow:inset 0 0 0 1px rgba(240,138,2,.55);background:rgba(246,246,244,.04)}
.book-stage{position:relative;perspective:1900px;height:clamp(380px,36vw,500px);display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line-on-ink);overflow:hidden;background:radial-gradient(60% 55% at 50% 60%,rgba(240,138,2,.10),transparent 70%)}
.book{--w:clamp(200px,17vw,262px);position:relative;width:var(--w);aspect-ratio:210/297;transform-style:preserve-3d;transform:rotateX(8deg) rotateY(26deg) rotateZ(-2deg);transition:transform 1.1s var(--ease)}
.book::after{content:"";position:absolute;left:6%;right:-6%;bottom:-9%;height:12%;background:radial-gradient(closest-side,rgba(0,0,0,.55),transparent);transform:translateZ(-30px) rotateX(90deg);transform-origin:bottom;filter:blur(6px);pointer-events:none}
.book-page{position:absolute;inset:0;transform:translateZ(-18px);background:#fbfbf9;color:var(--ink);border-radius:2px 5px 5px 2px;padding:14% 12% 10%;display:flex;flex-direction:column;gap:12px;box-shadow:inset 8px 0 14px -10px rgba(0,0,0,.35),6px 0 0 -2px #e9e9e4,10px 0 0 -4px #deded8;overflow:hidden}
.book-page .mono,.sec.ink .book-page .mono{font-size:.6rem;color:var(--orange-deep)}
.book-page ol{margin:0;padding:0;list-style:none;counter-reset:c;display:flex;flex-direction:column;gap:clamp(6px,.8vw,11px)}
.book-page li{counter-increment:c;display:grid;grid-template-columns:auto 1fr;gap:8px;font-size:clamp(.66rem,.78vw,.8rem);line-height:1.3;font-weight:500;padding-bottom:clamp(5px,.7vw,9px);border-bottom:1px solid var(--line)}
.book-page li::before{content:counter(c,decimal-leading-zero);font-family:var(--mono);font-size:.62em;color:#9c5800;padding-top:.25em}
.book-foot{margin-top:auto;font-family:var(--mono);font-size:.5rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.book-spine{position:absolute;left:0;top:0;bottom:0;width:18px;transform-origin:left center;transform:rotateY(90deg);background:linear-gradient(90deg,#0f1113,#24272b 45%,#15171a);box-shadow:inset 0 3px 0 var(--orange),inset 0 -3px 0 var(--orange)}
.book-cover{position:absolute;inset:0;transform-origin:left center;transform-style:preserve-3d;transform:rotateY(calc(var(--open,0) * -1deg));transition:transform 1.1s var(--ease)}
.cv{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:2px 5px 5px 2px;overflow:hidden}
.cv.front{background:#15181b;display:flex;flex-direction:column;box-shadow:inset 3px 0 0 rgba(255,255,255,.06),inset -1px 0 0 rgba(255,255,255,.08)}
.cv.front::before{content:"";position:absolute;left:0;top:0;bottom:0;width:10px;background:linear-gradient(90deg,rgba(0,0,0,.45),transparent);z-index:2}
.cv.front::after{content:"";position:absolute;inset:0;z-index:3;pointer-events:none;background:linear-gradient(115deg,rgba(255,255,255,.14) 0%,transparent 32%,transparent 70%,rgba(255,255,255,.05))}
.cv-img{height:50%;overflow:hidden;position:relative}
.cv-img img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);transition:transform 1.4s var(--ease)}
.guide:hover .cv-img img{transform:scale(1.16)}
.cv-img::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--orange)}
.cv-txt{padding:11% 11% 0;display:flex;flex-direction:column;gap:6px;color:var(--paper)}
.cv-txt span{font-family:var(--mono);font-size:.56rem;letter-spacing:.14em;text-transform:uppercase;color:var(--orange)}
.cv-txt b{font-family:var(--display);font-variation-settings:'wdth' 115;font-weight:650;font-size:clamp(1.15rem,1.55vw,1.55rem);letter-spacing:-.03em;line-height:.98}
.cv-logo{position:absolute;left:11%;bottom:7%;width:34%;height:auto;opacity:.75}
.cv.back{transform:rotateY(180deg);background:#fff;display:grid;place-items:center;box-shadow:inset -8px 0 14px -10px rgba(0,0,0,.35)}
.cv.back img{width:100%;height:100%;object-fit:cover}
.guide[data-guide="cnc"] .cv.back img{object-fit:contain;padding:6%}

.guide.open .book{transform:translateX(calc(var(--w) * .5)) rotateX(4deg) rotateY(0deg)}
.guide.open .book-cover{--open:168}
@media (hover:hover) and (pointer:fine){
  .guide:hover .book{transform:translateX(calc(var(--w) * .5)) rotateX(4deg) rotateY(0deg)}
  .guide:hover .book-cover{--open:168}
}
.guide:not(.open):not(:hover) .book-cover{animation:rcv-idle 5s var(--ease) 1.5s infinite}
@keyframes rcv-idle{0%,70%,100%{transform:rotateY(0)}82%{transform:rotateY(-14deg)}}

.guide-info{display:grid;grid-template-columns:1fr auto;grid-template-areas:"k lang" "t t" "a a";gap:14px 16px;padding:clamp(20px,2.4vw,32px);align-items:center}
.guide-info .mono{grid-area:k;color:var(--paper-on-ink)}
.guide-info h3{grid-area:t;font-size:clamp(1.35rem,2vw,1.75rem)}
.guide-lang{grid-area:lang;display:flex;gap:2px;padding:3px;border-radius:999px;box-shadow:inset 0 0 0 1px var(--line-on-ink)}
.guide-lang button{font-family:var(--mono);font-size:.64rem;letter-spacing:.08em;padding:6px 9px;border-radius:999px;color:var(--paper-on-ink);transition:background .3s,color .3s}
.guide-lang button:hover{color:var(--paper)}
.guide-lang button[aria-checked="true"]{background:var(--paper);color:var(--ink)}
.guide-actions{grid-area:a;display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-top:6px}
.guide-actions .link{color:var(--paper);border-color:var(--line-on-ink);font-size:.92rem}
.guide-actions .link:hover{border-color:var(--orange)}
@media (hover:hover) and (pointer:fine){.guide-actions .peek{display:none}}

/* diálogo de descarga */
.rdl{width:min(480px,calc(100vw - 32px));max-height:calc(100dvh - 32px);border:0;border-radius:10px;padding:clamp(26px,4vw,40px);background:var(--paper);color:var(--ink);box-shadow:0 40px 100px -30px rgba(0,0,0,.6)}
.rdl::backdrop{background:rgba(15,17,19,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.rdl[open]{animation:rdl-in .45s var(--ease)}
@keyframes rdl-in{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.rdl-x{position:absolute;right:14px;top:14px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;transition:background .3s}
.rdl-x:hover{background:var(--paper-2)}
.rdl-x svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.8;fill:none}
.rdl-form{display:flex;flex-direction:column;gap:16px}
.rdl h2{font-size:clamp(1.5rem,3vw,1.9rem);margin-bottom:6px;padding-right:30px}
.rdl .field input,.rdl .field select{background-color:#fff}
.rdl-check{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;color:var(--ink-2);cursor:pointer}
.rdl-check input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--ink);flex:none}
.rdl-err{font-size:.88rem;color:#8a1c1c}
.rdl-err[hidden],.rdl-done[hidden],.rdl-form[hidden]{display:none}
.rdl .btn.lg,.rdl-form .btn{justify-content:center;padding:15px 22px;font-size:1rem}
.rdl-done{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.rdl-done h2{outline:none}
.rdl-done p{color:var(--ink-2)}
.rdl-ok{width:56px;height:56px;border-radius:50%;background:var(--orange);display:grid;place-items:center;animation:rdl-pop .6s var(--ease)}
.rdl-ok svg{width:26px;height:26px;stroke:#fff;stroke-width:2.4;fill:none;stroke-dasharray:24;stroke-dashoffset:24;animation:rdl-tick .5s .25s var(--ease) forwards}
@keyframes rdl-pop{from{transform:scale(.4);opacity:0}to{transform:none;opacity:1}}
@keyframes rdl-tick{to{stroke-dashoffset:0}}

/* ---------- 03 archivos ---------- */
.fc{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:18px;align-items:stretch}
.fc-check{display:flex;flex-direction:column;border-radius:var(--r);background:#fff;box-shadow:inset 0 0 0 1px var(--line);overflow:hidden;transition:box-shadow .3s}
.fc-check.dragging{box-shadow:inset 0 0 0 2px var(--orange)}
.fc-input{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:clamp(18px,2.2vw,28px);border-bottom:1.5px dashed var(--line-strong);transition:background .3s}
.fc-check.dragging .fc-input{background:var(--orange-soft)}
.fc-input > svg{width:40px;height:40px;padding:9px;border-radius:50%;background:var(--ink);stroke:var(--paper);fill:none;stroke-width:1.8}
.fc-input b{display:block;font-family:var(--display);font-variation-settings:'wdth' 110;font-weight:600;font-size:1.1rem;letter-spacing:-.02em}
.fc-input label{font-size:.86rem;color:var(--steel)}
.fc-input input{width:9ch;height:44px;padding:0 12px;border:0;border-radius:999px;background:var(--paper);box-shadow:inset 0 0 0 1px var(--line-strong);font-family:var(--mono);font-size:.9rem;text-align:center;outline:none}
.fc-input input:focus{box-shadow:inset 0 0 0 1.5px var(--ink)}
.fc-verdict{flex:1;display:flex;flex-direction:column;gap:14px;padding:clamp(20px,2.6vw,36px)}
.fc-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.fc-ext{font-family:var(--display);font-variation-settings:'wdth' 112;font-weight:600;font-size:clamp(2.4rem,4.6vw,3.8rem);letter-spacing:-.045em;line-height:1;overflow-wrap:anywhere}
.fc-state{font-size:.84rem;font-weight:600;padding:6px 11px;border-radius:4px;white-space:nowrap}
.fc-state.ok{background:#e4f3e8;color:#1f6b3a}.fc-state.part{background:var(--orange-soft);color:#9c5800}.fc-state.no{background:#fdeeee;color:#8a1c1c}
.fc-verdict > p{color:var(--ink-2);max-width:46ch}
.fc-procs{list-style:none;margin:auto 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.fc-procs li{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:4px;background:var(--paper);font-size:.9rem;font-weight:500;transition:opacity .35s,background .35s}
.fc-procs i{width:22px;height:22px;border-radius:50%;flex:none;display:grid;place-items:center;background:var(--line);transition:background .35s,transform .45s var(--ease)}
.fc-procs i::before{content:"";width:9px;height:5px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:translateY(-1px) rotate(-45deg);opacity:0;transition:opacity .3s}
.fc-procs li.ok i{background:#2f8a4f;transform:scale(1)}
.fc-procs li.ok i::before{opacity:1}
.fc-procs li.plan i{background:var(--orange)}
.fc-procs li.plan i::before{content:"+";width:auto;height:auto;border:0;transform:none;color:#fff;font:600 .8rem/1 var(--mono);opacity:1}
.fc-procs li.no{opacity:.45}
.fc-procs li.no i{background:transparent;box-shadow:inset 0 0 0 1.5px var(--line-strong)}
.fc-procs li.no i::before{content:"";width:9px;height:1.5px;border:0;background:var(--steel);transform:none;opacity:1}
.fc-verdict.pulse .fc-ext{animation:fc-pulse .5s var(--ease)}
@keyframes fc-pulse{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.fc-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;align-content:stretch}
.fc-grid button{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;gap:12px;min-height:92px;padding:14px;border-radius:var(--r);background:#fff;box-shadow:inset 0 0 0 1px var(--line);text-align:left;transition:box-shadow .3s,transform .35s var(--ease),background .3s}
.fc-grid button:hover{transform:translateY(-3px);box-shadow:inset 0 0 0 1px var(--ink),0 16px 30px -22px rgba(30,32,35,.5)}
.fc-grid button[aria-pressed="true"]{background:var(--ink);color:var(--paper);box-shadow:none}
.fc-grid b{font-family:var(--mono);font-size:.92rem;font-weight:600;letter-spacing:.02em}
.fc-grid span{font-size:.78rem;color:var(--steel)}
.fc-grid button[aria-pressed="true"] span{color:var(--paper-on-ink)}
.fc-grid button::after{content:"";position:absolute;right:14px;top:16px;width:8px;height:8px;border-radius:50%;background:#2f8a4f}
.fc-grid button.part::after{background:var(--orange)}
.fc-grid button.no::after{background:#c23b3b}
.fc-grid button.no b{text-decoration:line-through;text-decoration-thickness:1.5px}

/* ---------- 05 blog ---------- */
.rsec-blog{padding-top:clamp(72px,9vw,140px)!important}
.rblog{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(20px,3vw,48px);align-items:start}
.rblog .ph{overflow:hidden;border-radius:var(--r);background:var(--paper-2)}
.rblog .ph img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease)}
.rblog a:hover .ph img{transform:scale(1.06)}
.rblog time{font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.rblog .go{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;flex:none;transition:transform .35s var(--ease)}
.rblog a:hover .go{transform:translate(3px,-3px);stroke:var(--orange-deep)}
.rb-main{display:flex;flex-direction:column;gap:20px}
.rb-main .ph{aspect-ratio:16/9}
.rb-main .tx{display:grid;grid-template-columns:1fr auto;gap:10px 24px;align-items:start}
.rb-main time{grid-column:1/-1}
.rb-main h3{font-size:clamp(1.5rem,2.4vw,2.1rem);max-width:26ch;padding-bottom:4px;background:linear-gradient(var(--orange),var(--orange)) 0 100%/0 2px no-repeat;transition:background-size .6s var(--ease)}
.rb-main:hover h3{background-size:100% 2px}
.rb-main .go{width:22px;height:22px;margin-top:6px}
.rb-side{list-style:none;margin:0;padding:0;border-top:1px solid var(--line-strong)}
.rb-item{display:grid;grid-template-columns:clamp(110px,11vw,150px) 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);transition:padding .4s var(--ease)}
.rb-item:hover{padding-left:8px}
.rb-item .ph{aspect-ratio:4/3}
.rb-item .tx{display:flex;flex-direction:column;gap:8px}
.rb-item h3{font-size:clamp(1.02rem,1.3vw,1.2rem);line-height:1.2;font-variation-settings:'wdth' 106}
@media (max-width:900px){.rblog{grid-template-columns:1fr}}
@media (max-width:560px){.rb-item{grid-template-columns:96px 1fr;gap:14px}.rb-item .go{display:none}}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .rcalc{grid-template-columns:minmax(0,3fr) minmax(0,2fr)}
  .guides{grid-template-columns:1fr}
  .book-stage{height:clamp(340px,52vw,460px)}
  .book{--w:clamp(180px,26vw,236px)}
  .fc{grid-template-columns:1fr}
}
@media (max-width:900px){
  .rhero .wrap{grid-template-columns:1fr}
  .rcalc{grid-template-columns:1fr}
  .rc-viz{border-left:0;border-top:1px solid var(--line);padding-block:28px}
  .rz{min-height:220px}
}
@media (max-width:560px){
  .rc-lims{grid-template-columns:1fr 1fr;gap:14px}
  .rc-lims b{font-size:1.9rem}
  .rc-controls{gap:10px}
  .rc-chips button{height:38px;min-width:0;padding:0 11px}
  .book{--w:44vw}
  .book-stage{height:88vw;max-height:420px}
  .guide.open .book{transform:translateX(calc(var(--w) * .5)) rotateX(2deg) rotateY(0deg) scale(.96)}
  .guide-info{grid-template-columns:1fr;grid-template-areas:"k" "t" "lang" "a"}
  .guide-lang{justify-self:start}
  .fc-input{grid-template-columns:auto 1fr}
  .fc-input input{grid-column:1/-1;width:100%}
  .fc-procs{grid-template-columns:1fr}
  .fc-grid{grid-template-columns:1fr 1fr}
}
@media (prefers-reduced-motion:reduce){
  .book,.book-cover,.rz-band,.rz-zero{transition:none}
  .guide .book-cover{animation:none!important}
}

/* ---------- 01 elegir proceso y material (21-09-2026) ---------- */
.rsec-tools{padding-top:clamp(40px,5vw,72px)}
.rtool .rc-left{gap:20px}
.rt-controls{display:flex;flex-direction:column;gap:12px;width:100%}
.rt-group{display:flex;flex-direction:column;gap:7px}
.rt-group .lbl,.rt-rows .lbl,.rt-mass .lbl{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.rt-group .rc-chips button{font-family:var(--body);font-size:.86rem;letter-spacing:0;min-width:0}
.rc-chips button:disabled{opacity:.3;cursor:not-allowed;transform:none;box-shadow:inset 0 0 0 1px var(--line)}
.rt-selects{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.rt-selects .field select{background-color:var(--paper)}
.rtool .rc-result{gap:10px}
.rt-why{color:var(--ink-2);max-width:46ch}
.rt-rows{display:flex;flex-direction:column;width:100%}
.rt-row{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1fr) minmax(0,1fr);gap:6px 14px;padding:10px 0;border-bottom:1px solid var(--line);align-items:baseline;font-size:.88rem}
.rt-row:last-child{border-bottom:0}
.rt-row b{font-weight:500;font-variant-numeric:tabular-nums;line-height:1.4;position:relative;padding-left:14px}
.rt-row b::before{content:"";position:absolute;left:0;top:.45em;width:8px;height:8px;border-radius:2px;background:var(--orange)}
.rt-row b.b::before{background:var(--ink)}
.rt-viz{flex-direction:column;justify-content:center}
.rt-ranks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;width:100%}
.rt-ranks li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;align-items:center;padding:12px 14px;border-radius:4px;background:#fff;box-shadow:inset 0 0 0 1px var(--line);transition:transform .5s var(--ease),box-shadow .4s,opacity .4s}
.rt-ranks b{font-family:var(--display);font-variation-settings:'wdth' 110;font-weight:600;font-size:1.02rem;letter-spacing:-.02em;line-height:1.1}
.rt-ranks em{font-style:normal;font-family:var(--mono);font-size:.54rem;letter-spacing:.1em;text-transform:uppercase;padding:3px 7px;border-radius:3px;background:var(--paper-2);color:var(--steel);white-space:nowrap}
.rt-ranks span{grid-column:1/-1;font-size:.82rem;color:var(--steel);line-height:1.4}
.rt-ranks li.is-first{box-shadow:inset 0 0 0 1.5px var(--orange),0 24px 44px -30px rgba(201,114,0,.7);transform:translateX(10px)}
.rt-ranks li.is-first em{background:var(--orange);color:var(--ink)}
.rt-ranks li.is-first span{color:var(--ink-2)}
.rt-ranks li.is-out{opacity:.5}
.rt-ranks li.is-out em{background:transparent;box-shadow:inset 0 0 0 1px var(--line-strong)}
.rt-mass{display:flex;flex-direction:column;gap:16px;width:100%}
.rt-mass-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 14px;align-items:baseline}
.rt-mass-row span{font-weight:500}
.rt-mass-row b{font-family:var(--display);font-variation-settings:'wdth' 112;font-weight:600;font-size:clamp(1.9rem,3.2vw,2.8rem);letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
.rt-mass-row b small{font-family:var(--mono);font-size:.72rem;font-weight:400;letter-spacing:.04em;color:var(--steel);margin-left:6px}
.rt-track{grid-column:1/-1;display:block;height:10px;border-radius:2px;background:rgba(30,32,35,.08);overflow:hidden}
.rt-track span{display:block;height:100%;width:var(--bar,50%);background:var(--orange);transition:width .7s var(--ease)}
.rt-mass-row.b .rt-track span{background:var(--ink)}
@media (max-width:560px){
  .rt-selects{grid-template-columns:1fr}
  .rt-row{grid-template-columns:1fr 1fr}
  .rt-row .lbl{grid-column:1/-1}
  .rt-ranks li.is-first{transform:none}
}
@media (prefers-reduced-motion:reduce){.rt-ranks li,.rt-track span{transition:none}}

/* ---------- 21-09-2026: visor 3D (sección 01), portadas de las guías por idioma y enlace del comprobador ---------- */
.rvisor{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);border-radius:var(--r);background:#fff;box-shadow:inset 0 0 0 1px var(--line),0 40px 80px -50px rgba(30,32,35,.4);overflow:hidden}
.rvisor-fig{position:relative;display:block;aspect-ratio:3/2;min-height:280px;overflow:hidden;isolation:isolate;background:radial-gradient(120% 95% at 50% 40%,#fff 0%,#f3f3f0 52%,#e6e6e1 100%)}
.rvisor-fig::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background-image:linear-gradient(rgba(30,32,35,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(30,32,35,.07) 1px,transparent 1px);background-size:28px 28px;background-position:center;-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 46%,#000 35%,transparent 80%);mask-image:radial-gradient(ellipse 70% 70% at 50% 46%,#000 35%,transparent 80%)}
.rvisor .vx-poster{position:absolute;inset:0;z-index:1;transition:transform .8s var(--ease)}
.rvisor .vx-poster img,.rvisor .vx-poster svg{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;overflow:visible}
.rvisor .vx-poster .caja{fill:none;stroke:var(--steel);stroke-width:1.4;stroke-dasharray:6 6;opacity:.55;vector-effect:non-scaling-stroke}
.rvisor .vx-poster .cota{fill:none;stroke:var(--orange);stroke-width:2;vector-effect:non-scaling-stroke}
.rvisor .vx-poster text{font-family:var(--mono);font-size:25px;font-weight:600;letter-spacing:.04em;fill:var(--ink)}
.rvisor .vx-poster text tspan{fill:var(--orange-deep)}
.rvisor:hover .vx-poster{transform:scale(1.03)}
.rvisor-drop{position:absolute;inset:12px;z-index:2;display:grid;place-items:center;border-radius:var(--r);border:2px dashed transparent;transition:border-color .2s,background .2s}
.rvisor-drop b{padding:10px 16px;border-radius:999px;background:var(--ink);color:var(--paper);font-size:.9rem;font-weight:500;opacity:0;transform:translateY(6px);transition:opacity .2s,transform .3s var(--ease)}
.rvisor.sobre .rvisor-drop{border-color:var(--orange);background:rgba(255,241,222,.7)}
.rvisor.sobre .rvisor-drop b{opacity:1;transform:none}
.rvisor-copy{display:flex;flex-direction:column;gap:16px;padding:clamp(24px,3vw,40px);border-left:1px solid var(--line)}
.rvisor-copy h3{font-family:var(--display);font-variation-settings:'wdth' 108;font-weight:600;font-size:clamp(1.5rem,2.2vw,2rem);letter-spacing:-.035em;line-height:1.05;margin:0}
.rvisor-copy p{margin:0;color:var(--ink-2);line-height:1.5}
.rvisor-copy ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}
.rvisor-copy li{display:flex;gap:10px;font-size:.93rem;line-height:1.4;color:var(--ink-2)}
.rvisor-copy li::before{content:"";flex:none;width:6px;height:6px;margin-top:.5em;border-radius:50%;background:var(--orange)}
.rvisor-copy .actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:auto;padding-top:6px}
.cv-portada{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top}
/* el índice lateral tiene siete entradas desde que entró el visor: filas más bajas */
.rindex a{padding-top:11px;padding-bottom:11px}
.rindex b{font-size:1.06rem}
.rindex .k{font-size:.8rem}
.fc-visor{margin-top:14px;font-size:.9rem}
.fc-visor[hidden]{display:none}
@media (max-width:560px){.book-page li:nth-child(n+6){display:none}}
@media (max-width:980px){
  .rvisor{grid-template-columns:1fr}
  .rvisor-copy{border-left:0;border-top:1px solid var(--line)}
}
@media (prefers-reduced-motion:reduce){.rvisor .vx-poster{transition:none}}

/* La relación de aspecto no debe imponer un ancho mínimo al visor móvil. */
@media(max-width:980px){.rvisor{grid-template-columns:minmax(0,1fr)}.rvisor-fig,.rvisor-copy{min-width:0}.rvisor-fig{min-height:0}}

/* ---------- 29-09-2026: la guía en horizontal, en cada página de proceso ----------
   El mismo libro de Recursos, en una banda oscura: libro a la izquierda, texto y descarga a la derecha. */
.guia-pdf .guia-h{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);background:var(--ink);color:var(--paper)}
.guia-pdf .guia-h:hover{background:var(--ink)}
.guia-h .book-stage{height:clamp(380px,34vw,470px);border-bottom:0;border-right:1px solid var(--line-on-ink)}
.guia-h .book{--w:clamp(180px,15.5vw,236px)}
.guia-h .guide-info{grid-template-areas:"k lang" "t t" "p p" "a a";align-content:center;gap:16px 20px;padding:clamp(28px,4.4vw,72px)}
.guia-h .guide-info h3{font-size:clamp(1.6rem,2.7vw,2.4rem);letter-spacing:-.03em;max-width:17ch}
.guia-h-txt{grid-area:p;margin:0;max-width:54ch;color:var(--paper-on-ink);font-size:1rem;line-height:1.55}
.guia-h .guide-actions{margin-top:10px}
@media (max-width:900px){
  .guia-pdf .guia-h{grid-template-columns:minmax(0,1fr)}
  .guia-h .book-stage{height:clamp(340px,58vw,440px);border-right:0;border-bottom:1px solid var(--line-on-ink)}
  .guia-h .book{--w:clamp(170px,28vw,230px)}
}
@media (max-width:560px){
  .guia-h .book{--w:44vw}
  .guia-h .book-stage{height:88vw;max-height:420px}
  .guia-h .guide-info{grid-template-areas:"k" "t" "p" "lang" "a"}
}

/* 02 revisión de fabricación: sección corta, título, frase y botón a la herramienta */
.rsec-dfm h2 em{font-style:normal}
.rsec-dfm .side .btn{margin-top:22px}
/* el índice pasa a ocho entradas */
.rindex a{padding-top:10px;padding-bottom:10px}
/* 29-09-2026: la cabecera empieza alineada arriba con el índice y baja con el scroll (sticky dentro
   de su celda) hasta alinearse abajo; de ahí sigue el scroll normal. Solo con dos columnas. */
@media (min-width:901px){
  .rhero .wrap{align-items:stretch}
  .rhero-copy{position:sticky;top:calc(var(--nav) + 28px);align-self:start}
}
/* 02: texto a la izquierda e imagen del análisis de una pieza de ejemplo a la derecha, enlazada a la
   herramienta (como la ficha del visor de la sección 01) */
.rsec-dfm .wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,80px);align-items:center}
.rsec-dfm .head-2{grid-template-columns:1fr;gap:22px;margin-bottom:0}
.rsec-dfm .head-2 .side .btn{margin-top:6px}
.rdfm-fig{display:block;border-radius:var(--r);overflow:hidden;background:#f3f3f0;box-shadow:inset 0 0 0 1px var(--line),0 40px 80px -56px rgba(30,32,35,.45);isolation:isolate}
.rdfm-fig img{display:block;width:100%;height:auto;transition:transform 1.2s var(--ease)}
.rdfm-fig:hover img{transform:scale(1.025)}
@media (max-width:900px){.rsec-dfm .wrap{grid-template-columns:1fr;gap:28px}}