:root{--red:#e60020;--ink:#17181b;--muted:#61646c;--line:#dedee2;--paper:#f4f4f5;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fafafa;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button,a,input{touch-action:manipulation}button{color:inherit}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--red);outline-offset:5px}button{border:1px solid var(--line);background:transparent;border-radius:4px;padding:12px 16px;font-size:.875rem}button:hover{border-color:var(--ink)}.skip{position:absolute;top:-80px;z-index:10;background:white;padding:16px}.skip:focus{top:0}.topbar{max-width:1440px;margin:auto;display:flex;align-items:center;gap:26px;padding:20px 5%;border-bottom:1px solid var(--line)}.brand img{width:56px;height:61px;object-fit:contain;display:block;mix-blend-mode:multiply}.edition{font-size:.75rem;font-weight:700;letter-spacing:.14em;line-height:1.8}.edition span{display:block;letter-spacing:0;font-weight:400;color:var(--muted);font-size:.875rem}.tools{margin-left:auto;display:flex;gap:10px}.tools button:last-child{background:var(--ink);color:white;border-color:var(--ink)}main{max-width:1440px;margin:auto;padding:0 5%}.intro{display:flex;justify-content:space-between;align-items:end;padding:44px 0 32px}.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.14em;color:var(--muted)}h1{font-size:clamp(2.4rem,4.6vw,4.75rem);line-height:1.02;letter-spacing:-.065em;margin:15px 0 0;font-weight:800}h1 em{font-style:normal;color:var(--red)}.intro p{font-size:1rem;color:var(--muted);line-height:1.6;margin-bottom:2px}.material-nav{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:28px}.material-nav a{text-decoration:none;padding:18px 10px;display:flex;gap:12px;align-items:center;font-size:.875rem;position:relative}.material-nav small{color:var(--muted);font-size:.75rem}.material-nav a[aria-current=true]{color:var(--red);font-weight:700}.material-nav a[aria-current=true]:after{position:absolute;bottom:-1px;left:0;right:0;height:3px;background:var(--red);content:''}.material-nav a:hover{background:#f0f0f2}.sheet{display:grid;grid-template-columns:1fr 1.12fr;background:white;border:1px solid var(--line);min-height:405px}.sheet-copy{padding:36px 40px;position:relative;z-index:1}.chapter{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.875rem}.chapter b{color:var(--red)}.chapter:after{content:'';height:1px;width:45px;background:var(--red)}h2{font-size:clamp(2.5rem,4.4vw,4.3rem);line-height:1;letter-spacing:-.055em;margin:25px 0 20px;font-weight:800}h2 span{color:var(--red);display:block}.lead{font-size:1.125rem;line-height:1.4;font-weight:700;max-width:400px}.description{color:var(--muted);line-height:1.65;font-size:1rem;max-width:490px}.material-art{position:relative;overflow:hidden;min-height:360px;background:#f7f7f7}.material-art img{height:100%;width:100%;object-fit:cover;animation:float 9s ease-in-out infinite;transform:scale(1.04)}.art-label{position:absolute;bottom:24px;left:24px;background:#ffffffeb;border:1px solid #ddd;padding:10px 15px;font-size:.875rem}.art-index{position:absolute;top:18px;right:22px;color:#fff;font-size:6rem;line-height:1;font-weight:800;letter-spacing:-.07em;text-shadow:0 1px 20px #0001}.stats{display:grid;grid-template-columns:1.15fr 1fr 1fr;border:1px solid var(--line);border-top:0;background:#fff}.stat{padding:25px 32px}.stat+.stat{border-left:1px solid var(--line)}.stat-label{font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:14px}.measure{font-size:2.7rem;font-weight:800;letter-spacing:-.055em}.measure small{font-size:1rem;letter-spacing:0;font-weight:400}.range-track{height:5px;background:#e9e9ed;margin:20px 0 9px;border-radius:3px;overflow:hidden}.range-track span{display:block;width:100%;height:100%;background:var(--red);transform-origin:left;animation:grow .8s ease-out}.range-ends{display:flex;justify-content:space-between;color:var(--muted);font-size:.75rem}.formats{display:flex;gap:8px;margin-top:10px}.formats button{display:flex;gap:10px;align-items:center}.formats button[aria-pressed=true]{color:var(--red);border-color:var(--red);background:#fff4f5}.format-note{font-size:.875rem;line-height:1.5;color:var(--muted);margin-bottom:0}.fsc{font-size:2rem;font-weight:800;margin:0 0 8px}.cert-note{font-size:.875rem;line-height:1.5;color:var(--muted);margin:0}.lower{display:grid;grid-template-columns:1fr 1.9fr;gap:50px;padding:48px 0}.section-heading{font-size:1.5rem;letter-spacing:-.035em;margin:0 0 22px}.section-kicker{display:block;color:var(--red);font-size:.75rem;letter-spacing:.14em;margin-bottom:10px;font-weight:bold}.process{border-top:1px solid var(--line)}.process:last-child{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;padding:18px 0;display:flex;align-items:center;gap:12px;font-size:1rem;font-weight:700}summary::-webkit-details-marker{display:none}summary:after{content:'+';margin-left:auto;color:var(--red);font-size:1.4rem;font-weight:400}details[open] summary:after{content:'−'}.process p{margin:0 20px 20px 36px;color:var(--muted);line-height:1.55;font-size:.9375rem}.process-number{font-size:.75rem;color:var(--red);font-weight:400}.applications{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.application{padding:0;text-align:left;border:0;border-radius:0}.application:hover .app-image img{transform:scale(1.07)}.app-image{overflow:hidden;position:relative;aspect-ratio:1/1.1;background:#eee}.app-image img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s}.app-image:after{content:'+';position:absolute;bottom:10px;right:10px;background:white;border-radius:50%;width:30px;height:30px;display:grid;place-items:center;color:var(--red);font-size:1.25rem}.application .caption{display:block;font-size:.9375rem;line-height:1.4;padding-top:12px}.application .caption small{display:block;font-size:.75rem;color:var(--muted);margin-bottom:5px}.source-note{border-top:1px solid var(--line);padding:24px 0;display:flex;gap:15px;align-items:start;color:var(--muted)}.source-note p{font-size:.8125rem;line-height:1.65;margin:0;max-width:970px}.note-icon{border:1px solid var(--red);border-radius:50%;color:var(--red);width:23px;height:23px;flex-shrink:0;text-align:center}footer{padding:28px 5%;max-width:1440px;margin:auto;border-top:1px solid var(--line);display:flex;align-items:center;gap:32px}footer strong{font-size:1.75rem;letter-spacing:-.06em}footer span{display:block;font-size:.6rem;letter-spacing:.2em}footer p{font-size:.8125rem;color:var(--muted)}footer a{margin-left:auto;font-size:.875rem;text-underline-offset:5px}dialog{border:0;padding:36px;max-width:min(1100px,94vw);width:1100px;max-height:90vh;border-radius:8px;color:var(--ink)}dialog::backdrop{background:#111a;backdrop-filter:blur(7px)}.dialog-head{display:flex;justify-content:space-between;gap:20px;align-items:start}.dialog-head h2{font-size:2rem;margin:12px 0 20px}.close{font-size:1.7rem;padding:3px 12px}dialog>p{line-height:1.5;color:var(--muted)}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:.9375rem;text-align:left}th,td{padding:17px 14px;border-bottom:1px solid var(--line);min-width:120px;line-height:1.5}th{font-size:.8125rem;color:var(--muted)}td:first-child{font-weight:700;color:var(--red)}#viewer{width:auto;max-width:90vw}#viewer-image{max-width:100%;max-height:65vh;display:block;margin:auto}.nojs{padding:40px}.enter{animation:enter .45s ease-out}.paused *{animation-play-state:paused!important;transition:none!important}@keyframes enter{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes float{0%,100%{transform:scale(1.04) translateY(0)}50%{transform:scale(1.07) translateY(-5px)}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(min-width:1600px){.intro{padding-top:55px}}@media(max-width:1000px){.sheet-copy{padding:28px}.stat{padding:22px}.lower{gap:30px;grid-template-columns:1fr 1.5fr}.applications{grid-template-columns:repeat(2,1fr)}.material-nav a{gap:7px;font-size:.8rem}.tools{gap:6px}.tools button{padding:10px;font-size:.8rem}.edition{letter-spacing:.05em}.edition span{display:none}}@media(max-width:700px){.topbar{padding:14px 5%;gap:12px}.edition{display:none}.brand img{width:44px;height:48px}.tools button{font-size:.75rem;max-width:140px}.intro{display:block;padding:30px 0 24px}.intro h1 br{display:none}h1{font-size:2.8rem}.intro p{font-size:.875rem;margin-top:18px}.material-nav{grid-template-columns:repeat(3,1fr);margin-bottom:18px}.material-nav a{padding:14px 6px;min-height:58px;font-size:.8125rem}.sheet{grid-template-columns:1fr}.sheet-copy{padding:26px}.sheet h2{font-size:3rem;margin-top:20px}.material-art{height:255px;min-height:0}.material-art img{object-position:center 65%}.art-index{font-size:4rem}.art-label{bottom:16px;left:18px}.description{font-size:.9375rem}.stats{grid-template-columns:1fr}.stat{padding:24px}.stat+.stat{border-left:0;border-top:1px solid var(--line)}.range-track{max-width:100%}.lower{grid-template-columns:1fr;gap:32px;padding:32px 0}.applications{grid-template-columns:repeat(2,1fr)}.app-image{aspect-ratio:1}.section-heading{font-size:1.4rem}.source-note{padding:22px 0}footer{flex-wrap:wrap;gap:20px}footer p{max-width:200px;margin:0}footer a{margin:0;flex-basis:100%}dialog{padding:24px}.dialog-head h2{font-size:1.6rem}#viewer{width:92vw}}@media print{.tools,.material-nav,.intro,footer,dialog{display:none}.sheet,.stats{break-inside:avoid}.material-art img{animation:none}.lower{display:block}details p{display:block}.applications{grid-template-columns:repeat(3,1fr)}body{background:#fff}}
.app-image{display:block}.modal-open{overflow:hidden}.paused .range-track span{transform:scaleX(1);animation:none!important}.table-wrap a{text-underline-offset:4px}a:hover{color:var(--red)}
.paused .enter{animation:none!important;opacity:1;transform:none}
/* Identidad, temas y nueva navegación */
:root{--surface:#fff;--page:#fafafa;--soft:#f0f1f3;--contrast:#17181b;--tab:#f3f3f5;--image-label:#fffffff0;--red:#c70b2a;background:var(--page);color-scheme:light}
:root[data-theme=dark]{--ink:#f5f5f7;--muted:#b9bac4;--line:#3a3c43;--surface:#22242b;--page:#15161b;--soft:#2c2e36;--contrast:#f5f5f7;--tab:#24262d;--image-label:#22242bf0;--red:#ff3553;background:var(--page);color-scheme:dark}
body{background:var(--page);color:var(--ink);transition:background .25s,color .25s}.topbar{background:var(--surface);gap:22px}.brand{display:flex;align-items:center;min-width:215px}.brand img{width:210px;height:auto;max-height:68px;mix-blend-mode:normal}.logo-dark{display:none!important}:root[data-theme=dark] .logo-light{display:none!important}:root[data-theme=dark] .logo-dark{display:block!important}.edition{font-size:.76rem;letter-spacing:.15em}.edition span{font-size:.81rem}.tools{align-items:center}.tools button:last-child{background:var(--contrast);color:var(--page);border-color:var(--contrast)}.theme-switch{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:999px;min-height:43px}.theme-switch svg{width:19px;height:19px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}.theme-switch .moon{opacity:.48}.theme-switch .sun{color:#d98b00}.switch-track{height:22px;width:41px;border-radius:20px;background:#c9cbd0;padding:3px;display:flex;align-items:center;transition:background .2s}.switch-thumb{width:16px;height:16px;border-radius:50%;background:white;box-shadow:0 1px 3px #0004;transition:transform .2s}:root[data-theme=dark] .switch-track{background:var(--red)}:root[data-theme=dark] .switch-thumb{transform:translateX(19px)}:root[data-theme=dark] .theme-switch .sun{opacity:.45}:root[data-theme=dark] .theme-switch .moon{opacity:1;color:#e9ecff}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.material-nav{gap:8px;border:0;margin-bottom:20px}.material-nav a{display:flex;align-items:center;justify-content:center;text-align:center;min-height:64px;padding:12px 11px;background:var(--tab);border:1px solid var(--line);border-radius:5px;font-weight:700;font-size:.87rem;line-height:1.25;transition:background .2s,color .2s,transform .2s}.material-nav a:hover{background:var(--soft);transform:translateY(-2px);color:var(--ink)}.material-nav a[aria-current=true]{background:var(--red);border-color:var(--red);color:#fff;box-shadow:0 5px 16px #b4002730}.material-nav a[aria-current=true]:after{display:none}.material-nav a[aria-current=true]:hover{color:#fff}.sheet,.stats{background:var(--surface)}.material-art{background:var(--soft)}.art-label{background:var(--image-label);border-color:var(--line)}.formats button[aria-pressed=true]{background:var(--soft);color:var(--red);border-color:var(--red)}.application .caption,.section-heading{color:var(--ink)}.app-image{background:var(--soft)}.app-image:after{background:var(--surface)}.skip,.nojs{background:var(--surface)}dialog{background:var(--surface);color:var(--ink)}
/* Los tamaños reales se muestran como estaciones, no como un rango continuo. */
.stats{grid-template-columns:1fr 1fr}.grade-stat{grid-column:1/-1;border-bottom:1px solid var(--line);padding:25px 32px 18px}.stat+.grade-stat{border-left:0}.grade-heading{display:flex;align-items:baseline;justify-content:space-between;gap:15px}.grade-heading .stat-label{margin-bottom:0}.grade-heading strong{font-size:.94rem}.grade-heading small{font-weight:400;color:var(--muted)}.timeline{overflow-x:auto;overflow-y:hidden;margin-top:15px;padding:4px 0 7px;scrollbar-color:var(--red) var(--soft);scrollbar-width:thin}.timeline-rail{list-style:none;display:flex;position:relative;min-width:max-content;margin:0;padding:0}.timeline-rail:before{content:'';position:absolute;top:30px;left:37px;right:37px;height:2px;background:var(--line)}.grade-step{position:relative;flex:1 0 76px;min-width:76px;display:flex;flex-direction:column;align-items:center;gap:7px;text-align:center;font-size:1.06rem}.grade-step:first-child{margin-left:0}.grade-step:last-child{margin-right:0}.grade-position{font-size:.68rem;color:var(--muted);letter-spacing:.08em}.grade-dot{display:block;width:12px;height:12px;border:3px solid var(--red);border-radius:50%;background:var(--surface);z-index:1}.grade-step strong{font-size:1.06rem}.grade-step:first-child strong,.grade-step:last-child strong{color:var(--red)}.grade-unit{margin:10px 0 0;color:var(--muted);font-size:.78rem}.grade-stat+.stat{border-left:0}.fsc-stat{border-left:1px solid var(--line)!important}.fsc-content{display:flex;align-items:center;gap:18px}.fsc-content img{width:68px;height:86px;object-fit:contain;flex-shrink:0;border-radius:5px}.fsc{font-size:1.5rem}.fsc-content .cert-note{max-width:350px}
footer{background:var(--surface);gap:24px}.footer-logo{display:block;flex:0 0 auto;margin-left:0}.footer-logo img{display:block;width:205px;height:auto;max-height:66px}.footer-links{display:flex;align-items:center;gap:20px;margin-left:auto}.footer-links>a{margin:0;font-size:.84rem;color:var(--muted);white-space:nowrap}.social-links{display:flex;gap:8px}.social-links a{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;margin:0;color:var(--ink)}.social-links a:hover{color:var(--red);border-color:var(--red)}.social-links svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7}.social-links .filled{fill:currentColor;stroke:none}.source-link{margin-left:0;font-size:.78rem;white-space:nowrap}
@media(max-width:1100px){.edition{display:none}.brand{min-width:0}.topbar{gap:12px}.footer-links{gap:12px}}
@media(max-width:700px){.topbar{padding:12px 5%;flex-wrap:wrap}.brand img{width:140px;max-height:52px}.tools{gap:5px}.theme-switch{gap:5px;padding:7px;min-height:36px}.theme-switch svg{width:16px;height:16px}.tools button{font-size:.72rem;padding:8px}.tools button#motion{max-width:104px}.tools button#compare{max-width:113px}.material-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.material-nav a{min-height:52px;padding:10px 8px;font-size:.85rem}.stats{grid-template-columns:1fr}.grade-stat{padding:22px 18px 16px}.grade-heading strong{font-size:.82rem}.grade-step{flex-basis:68px;min-width:68px}.timeline-rail:before{left:34px;right:34px}.grade-unit{font-size:.75rem}.fsc-stat{border-left:0!important;border-top:1px solid var(--line)!important}.fsc-content img{width:58px;height:74px}.footer-logo img{width:178px}.footer-links{margin-left:0}.footer-links>a{font-size:.75rem}.source-link{flex-basis:100%}}
@media(max-width:385px){.topbar{display:grid;grid-template-columns:1fr}.tools{margin-left:0;justify-content:space-between}.brand img{width:158px}.theme-switch{flex:0 0 auto}.tools button#motion{max-width:none}.tools button#compare{max-width:none}.footer-links{flex-wrap:wrap}}
@media print{:root[data-theme=dark]{--ink:#17181b;--muted:#61646c;--line:#dedee2;--surface:#fff;--page:#fff;--red:#c70b2a;color-scheme:light}.logo-dark{display:none!important}.logo-light{display:block!important}.timeline{overflow:visible}.timeline-rail{min-width:0}.grade-step{min-width:0}}
.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.stat{min-width:0}.timeline{max-width:100%;width:100%}
@media(max-width:700px){.stats{grid-template-columns:minmax(0,1fr)}}
.timeline-hint{display:none;color:var(--red);font-weight:700}@media(max-width:700px){.timeline-hint{display:block;margin-top:5px}}
/* Selector de gramajes y encabezado simplificado */
.tools{margin-left:auto;justify-content:flex-end}.tools .theme-switch{background:transparent;color:var(--ink);border-color:var(--line)}.tools .theme-switch:hover{background:var(--soft)}.timeline-rail{gap:9px}.timeline-rail:before{display:none}.grade-step,.grade-step:first-child,.grade-step:last-child{flex:0 0 87px;min-width:87px;margin:0;display:block}.grade-choice{display:flex;min-height:83px;width:100%;flex-direction:column;align-items:center;justify-content:center;gap:9px;padding:12px 5px;border:1px solid var(--line);border-radius:7px;background:var(--soft);color:var(--ink);text-decoration:none;transition:transform .18s,background .18s,border-color .18s,color .18s}.grade-choice:hover{background:var(--red);border-color:var(--red);color:#fff;transform:translateY(-3px)}.grade-choice:hover strong,.grade-choice:hover small{color:#fff}.grade-dot{width:7px;height:7px;border:0;background:var(--red);border-radius:50%}.grade-choice:hover .grade-dot{background:#fff}.grade-choice strong,.grade-step:first-child strong,.grade-step:last-child strong{color:inherit;font-size:1.12rem;white-space:nowrap}.grade-choice small{color:var(--muted);font-size:.67rem;font-weight:400}.grade-heading strong{font-size:.85rem;color:var(--red)}.grade-unit{margin-top:10px}.social-links svg{stroke-linejoin:round}
@media(max-width:700px){.grade-step,.grade-step:first-child,.grade-step:last-child{flex-basis:83px;min-width:83px}.grade-choice{min-height:76px}.grade-heading{align-items:flex-start}.grade-heading strong{max-width:160px;text-align:right;font-size:.75rem}}
@media(max-width:385px){.topbar{display:flex;flex-wrap:nowrap}.brand img{width:145px}.tools{margin-left:auto;justify-content:flex-end}}
@media(min-width:1101px){.timeline-rail{gap:7px}.grade-step,.grade-step:first-child,.grade-step:last-child{flex-basis:82px;min-width:82px}}
/* Explorer de gramajes basado en la guía adjunta */
.tools button.theme-switch:last-child{background:transparent;color:var(--ink);border-color:var(--line);box-shadow:none}.tools button.theme-switch:last-child:hover{background:transparent;border-color:var(--red)}.theme-switch .switch-track{background:var(--soft);border:1px solid var(--line)}:root[data-theme=dark] .theme-switch .switch-track{background:var(--soft);border-color:var(--line)}:root[data-theme=dark] .theme-switch .switch-thumb{background:var(--red)}
.grade-explorer{display:grid;grid-template-columns:minmax(0,.87fr) minmax(0,1.13fr);gap:24px;margin-top:16px}.grade-selector{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;align-content:start}.grade-selector .grade-choice{width:100%;min-height:83px;border:1px solid var(--line);background:var(--soft);color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;padding:9px 4px;transform:none}.grade-selector .grade-choice:hover{border-color:var(--red);background:var(--surface);color:var(--red);transform:none}.grade-selector .grade-choice[aria-pressed=true]{background:#c70b2a;border-color:#c70b2a;color:#fff;box-shadow:0 3px 10px #c70b2a33}.grade-selector .grade-choice[aria-pressed=true] small{color:#fff}.grade-selector .grade-choice strong,.grade-selector .grade-choice:first-child strong,.grade-selector .grade-choice:last-child strong{color:inherit;font-size:1.02rem}.grade-selector .grade-choice small{font-size:.67rem;color:var(--muted);font-weight:400}.weight-icon{width:21px;height:21px;flex-shrink:0}.grade-panel{min-height:330px;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:24px 28px;animation:grade-panel-in .25s ease-out}.grade-panel-top{display:flex;justify-content:space-between;align-items:center;gap:15px;border-bottom:1px solid var(--line);padding-bottom:13px}.grade-panel-top .section-kicker{margin:0}.grade-panel-top strong{font-size:2rem;color:var(--red);letter-spacing:-.055em;white-space:nowrap}.grade-panel-top small{font-size:.8rem;color:var(--ink);letter-spacing:0;margin-left:6px}.grade-info{padding:16px 0;border-bottom:1px solid var(--line)}.grade-info>span{display:block;color:var(--muted);font-size:.72rem;letter-spacing:.12em;font-weight:700;margin-bottom:7px}.grade-info h3{font-size:1.2rem;line-height:1.35;margin:0}.grade-info p{font-size:.94rem;line-height:1.55;margin:0}.grade-advice{border-bottom:0}.finish-note{color:var(--muted);font-size:.86rem;line-height:1.5;margin:3px 0 16px}.grade-source{font-size:.75rem;color:var(--muted);line-height:1.5;margin:14px 0 0}.grade-source a{color:var(--red);text-underline-offset:3px}.grade-unit{font-size:.78rem;line-height:1.5;margin:14px 0 0}.grade-heading strong{color:var(--muted);font-weight:400}.grade-heading .stat-label{color:var(--red)}@keyframes grade-panel-in{from{opacity:.35;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:950px){.grade-explorer{grid-template-columns:1fr;gap:14px}.grade-selector{grid-template-columns:repeat(4,minmax(0,1fr))}.grade-panel{min-height:0}}
@media(max-width:700px){.grade-selector{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.grade-selector .grade-choice{min-height:73px}.grade-panel{padding:19px}.grade-heading strong{max-width:175px}.grade-unit{font-size:.75rem}}
@media(max-width:360px){.grade-selector .grade-choice strong{font-size:.92rem}.grade-selector .grade-choice small{font-size:.58rem}}
@media(prefers-reduced-motion:reduce){.grade-panel{animation:none}}
/* Selector desplegable compacto */
.grade-explorer{grid-template-columns:minmax(225px,.55fr) minmax(0,1.45fr);gap:24px;align-items:start}.grade-picker{background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:24px}.grade-picker label{display:block;font-size:.81rem;font-weight:700;color:var(--muted);margin-bottom:12px}.grade-select-wrap{position:relative}.grade-select-wrap .weight-icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);width:22px;height:22px;pointer-events:none;color:var(--red);z-index:1}.grade-select-wrap select{appearance:none;-webkit-appearance:none;display:block;width:100%;min-height:56px;padding:11px 45px 11px 50px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:6px;font:700 1.1rem Arial,Helvetica,sans-serif;cursor:pointer}.grade-select-wrap select:hover{border-color:var(--red)}.grade-select-wrap select:focus-visible{outline:3px solid var(--red);outline-offset:3px}.select-chevron{position:absolute;right:16px;top:50%;transform:translateY(-50%);width:20px;height:20px;fill:none;stroke:var(--red);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.grade-panel{min-height:0}.finish-note{margin-bottom:0}
@media(max-width:950px){.grade-explorer{grid-template-columns:minmax(0,1fr)}.grade-picker{padding:18px}}
@media(max-width:700px){.grade-picker{padding:15px}.grade-select-wrap select{min-height:52px}}
/* Tipografía incluida localmente */
@font-face{font-family:Montserrat;src:url('assets/fonts/montserrat-latin.woff2') format('woff2');font-style:normal;font-weight:400 800;font-display:swap}
@font-face{font-family:Poppins;src:url('assets/fonts/poppins-700-latin.woff2') format('woff2');font-style:normal;font-weight:700;font-display:swap}
@font-face{font-family:Poppins;src:url('assets/fonts/poppins-800-latin.woff2') format('woff2');font-style:normal;font-weight:800;font-display:swap}
:root,body,button,select{font-family:Montserrat,Arial,sans-serif}h1,h2,h3,.section-heading,.material-nav a{font-family:Poppins,Montserrat,Arial,sans-serif;font-weight:700}h1{font-weight:800;letter-spacing:-.045em;line-height:1.08}.sheet h2{letter-spacing:-.045em}.grade-select-wrap select{font-family:Montserrat,Arial,sans-serif}.edition,.eyebrow,.stat-label,.section-kicker{font-family:Montserrat,Arial,sans-serif}
/* Línea de productos con indicador fluido */
.material-nav,.material-nav:where(:hover){display:flex;flex-wrap:nowrap;gap:0;position:relative;overflow-x:auto;overflow-y:hidden;white-space:nowrap;border:0;border-bottom:1px solid var(--line);border-radius:0;margin-bottom:24px;scrollbar-width:none;scroll-snap-type:x proximity}.material-nav::-webkit-scrollbar{display:none}.material-nav a{flex:1 0 auto;min-height:60px;padding:14px 18px;background:transparent;border:0;border-radius:0;box-shadow:none;text-align:center;white-space:nowrap;font-size:.85rem;line-height:1.3;text-decoration:none;scroll-snap-align:center;z-index:1;transition:color .25s}.material-nav a:hover{background:transparent;color:var(--red);transform:none}.material-nav a[aria-current=true],.material-nav a[aria-current=true]:hover{background:transparent;border:0;color:var(--red);box-shadow:none}.material-nav a[aria-current=true]:after{display:none}.liquid-indicator{position:absolute;left:0;bottom:0;width:20px;height:5px;border-radius:999px;background:var(--red);box-shadow:0 0 12px #c70b2a66;pointer-events:none;z-index:2}
/* Campo de gramaje de apariencia premium */
.grade-picker{position:relative;overflow:hidden;background:linear-gradient(140deg,var(--surface),var(--soft));border:1px solid var(--line);border-radius:14px;padding:27px;box-shadow:0 12px 28px #14151b0d}.grade-picker:before{content:'';position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--red),transparent 85%)}.grade-picker label{font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:15px;color:var(--muted)}.grade-select-wrap select{min-height:65px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding-left:53px;font-family:Montserrat,Arial,sans-serif;font-size:1.18rem;font-weight:700;box-shadow:0 5px 16px #16171c0a;transition:border-color .2s,box-shadow .2s}.grade-select-wrap select:hover,.grade-select-wrap select:focus-visible{border-color:var(--red);box-shadow:0 5px 18px #c70b2a24}.grade-select-wrap .weight-icon{left:17px;width:23px;height:23px}.select-chevron{right:19px;width:21px;height:21px}
@media(max-width:700px){.material-nav{display:flex;flex-wrap:nowrap;gap:0;margin-bottom:18px}.material-nav a{flex:0 0 auto;min-height:54px;padding:13px 16px;font-size:.81rem}.grade-picker{padding:19px}.grade-select-wrap select{min-height:59px}}
@media(prefers-reduced-motion:reduce){.material-nav a,.grade-select-wrap select{transition:none}}
/* Identidad más discreta */
.topbar{padding-top:14px;padding-bottom:14px}.brand{min-width:0}.brand img{width:158px;max-height:52px}.footer-logo img{width:152px;max-height:49px}
@media(max-width:700px){.topbar{padding-top:11px;padding-bottom:11px}.brand img{width:119px;max-height:42px}.footer-logo img{width:128px;max-height:42px}}
@media(max-width:385px){.brand img{width:119px}}

/* Galería de aplicaciones: una imagen visible, navegación libre por puntos o gesto. */
.applications{display:flex;gap:0;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;scrollbar-width:none;overscroll-behavior-inline:contain}
.lower>section{min-width:0}
.applications::-webkit-scrollbar{display:none}
.application{flex:0 0 100%;width:100%;min-width:0;scroll-snap-align:start;scroll-snap-stop:always;display:block;background:transparent}
.app-image{height:clamp(250px,30vw,410px);aspect-ratio:auto;border-radius:8px}
.application .caption{font-family:Poppins,Montserrat,Arial,sans-serif;font-size:1.05rem;font-weight:700;padding-top:13px}
.carousel-controls{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:16px}
.carousel-arrow{display:grid;place-items:center;width:38px;height:38px;padding:0;border:1px solid var(--line);border-radius:50%;background:var(--surface);color:var(--ink);font-size:1.7rem;line-height:1;transition:border-color .2s,color .2s,transform .2s}
.carousel-arrow:hover{border-color:var(--red);color:var(--red);transform:scale(1.06)}
.carousel-dots{display:flex;align-items:center;justify-content:center;gap:9px}
.carousel-dot{width:9px;height:9px;min-width:9px;padding:0;border:0;border-radius:999px;background:var(--line);transition:width .25s,background .25s}
.carousel-dot:hover{background:var(--muted)}
.carousel-dot[aria-current=true]{width:26px;background:var(--red)}
@media(max-width:700px){.lower{grid-template-columns:minmax(0,1fr)}.app-image{height:260px}.carousel-controls{margin-top:12px}}
.applications .app-image img{object-fit:cover}

/* Las fotografías de aplicaciones se presentan sin barras laterales. */
.applications{width:min(100%,620px);margin-inline:auto}
.app-image{height:auto;aspect-ratio:1/1}
.carousel-controls{width:min(100%,620px);margin:16px auto 0}

/* Visor ampliado con navegación entre las imágenes del producto. */
#viewer{width:min(920px,94vw);max-width:94vw;max-height:90vh;padding:22px}
#viewer .dialog-head{align-items:center}
#viewer .dialog-head h2{font-size:clamp(1.2rem,2.4vw,1.8rem);margin:0 0 16px}
#viewer .close{margin-bottom:16px}
.viewer-stage{position:relative;display:flex;align-items:center;justify-content:center;max-width:100%;margin:auto}
#viewer-image{display:block;width:auto;height:auto;max-width:100%;max-height:min(70vh,740px);margin:auto;object-fit:contain}
#viewer.viewer-loading #viewer-image{opacity:0}
#viewer.viewer-loading .viewer-stage::after{content:'';position:absolute;width:28px;height:28px;border:3px solid var(--line);border-top-color:var(--red);border-radius:50%;animation:viewer-spin .8s linear infinite}
@keyframes viewer-spin{to{transform:rotate(360deg)}}
.viewer-arrow{position:absolute;top:50%;z-index:1;display:grid;place-items:center;width:46px;height:46px;padding:0;transform:translateY(-50%);border:1px solid #ffffff99;border-radius:50%;background:#17181bcc;color:#fff;font-size:2rem;line-height:1;backdrop-filter:blur(6px)}
.viewer-arrow:hover{border-color:var(--red);background:var(--red);color:#fff}
.viewer-prev{left:12px}.viewer-next{right:12px}
.viewer-count{margin:14px 0 0;text-align:center;color:var(--muted);font-size:.8rem}
@media(max-width:700px){#viewer{padding:14px}.viewer-arrow{width:40px;height:40px;font-size:1.7rem}.viewer-prev{left:7px}.viewer-next{right:7px}}

/* Presentación editorial sobria para las fichas y la galería. */
.lower{gap:22px;padding:36px 0 48px;align-items:start}
.lower>section{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:clamp(22px,2.8vw,36px);box-shadow:0 12px 36px #17181b0a}
.lower>section::before{content:"";display:block;width:38px;height:3px;background:var(--red);margin-bottom:19px}
.lower .section-kicker{font-size:.7rem;letter-spacing:.17em;margin-bottom:8px}
.lower .section-heading{font-size:clamp(1.35rem,2vw,1.75rem);line-height:1.2;letter-spacing:-.03em;margin-bottom:24px}
.applications .app-image{border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 28px #17181b14}
.application .caption{display:flex;align-items:center;gap:10px;font-size:1.02rem;padding:17px 2px 2px}
.application .caption::before{content:"";display:block;width:16px;height:2px;flex:none;background:var(--red)}
.carousel-arrow{width:42px;height:42px;border-radius:8px}
@media(max-width:700px){.lower{gap:16px;padding:26px 0 36px}.lower>section{padding:22px}.lower .section-heading{margin-bottom:20px}}
@media print{.lower>section{box-shadow:none}}