/* El Método: architectural relief. Decorative motion never moves reading or links. */
body[data-tmf-palette]{--edge:rgba(241,239,237,.13);--shadow:rgba(0,0,0,.38)}
.site-header{position:relative;background:linear-gradient(180deg,#19191b,var(--bg));border-bottom:1px solid rgba(255,255,255,.04)}
.review-bar{background:linear-gradient(100deg,#202022,#171719);box-shadow:0 1px 0 #09090a,0 12px 24px -22px #000}
.hero{position:relative;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;padding-top:14px;padding-bottom:70px}
.hero>div:first-child{position:relative;z-index:1}
.hero h1{font-size:clamp(4rem,7.6vw,7rem);letter-spacing:-.065em;text-shadow:0 3px 0 rgba(0,0,0,.25)}
.hero .muted{max-width:470px}
.hero-visual{min-width:0;position:relative}
.relief-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 4px;font-size:11px;color:var(--muted)}
.relief-toolbar>span{letter-spacing:.13em;text-transform:uppercase}
.effects-toggle{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;min-height:44px;font-size:12px;border-color:transparent;border-radius:6px;white-space:nowrap}
.effects-toggle::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--muted)}
.effects-toggle[aria-pressed=true]::before{background:var(--accent);box-shadow:0 0 10px rgba(255,118,89,.25)}
.effects-toggle:disabled{opacity:1;color:var(--muted)}
.relief-stage{height:320px;position:relative;display:grid;place-items:center;perspective:1050px;isolation:isolate;--tilt-x:0deg;--tilt-y:0deg;--light-x:28%;--light-y:15%}
.relief-stage::before{content:'';position:absolute;inset:6% 0 4%;pointer-events:none;background:radial-gradient(ellipse at 54% 62%,rgba(255,118,89,.10),transparent 61%),radial-gradient(ellipse at 30% 45%,rgba(210,205,197,.07),transparent 62%);z-index:-1}
.relief-scene{position:relative;width:78%;max-width:385px;aspect-ratio:1.3;transform-style:preserve-3d;transform:rotateX(calc(54deg + var(--tilt-x))) rotateY(var(--tilt-y)) rotateZ(-28deg);transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.relief-base{position:absolute;inset:0;transform-style:preserve-3d;background:linear-gradient(140deg,#38383b,#242427 42%,#18181b);border:1px solid #535257;box-shadow:-17px 34px 32px #0009,0 0 0 1px #080809}
.relief-base::before,.relief-base::after{content:'';position:absolute;transform-origin:0 0;backface-visibility:hidden}
.relief-base::before{left:100%;top:-1px;width:15px;height:calc(100% + 2px);transform:rotateY(90deg);background:linear-gradient(90deg,#151517,#29292c);border-right:1px solid #37373b}
.relief-base::after{top:100%;left:-1px;width:calc(100% + 2px);height:15px;transform:rotateX(-90deg);background:linear-gradient(#171719,#08080a);border-bottom:1px solid #323235}
.relief-route{position:absolute;inset:0;width:100%;height:100%;transform:translateZ(1px);overflow:visible;pointer-events:none}
.relief-route .route-shadow{stroke:#b14631;stroke-width:8;opacity:.2;filter:blur(4px)}
.relief-route .route-line{stroke:var(--accent);stroke-width:1.8}
.relief-route .route-node{fill:#ffb09b;stroke:#aa4936;stroke-width:1}
.relief-slab{position:absolute;transform-style:preserve-3d;--rise:30px}
.relief-slab.one{left:7%;top:10%;width:33%;height:71%;--rise:34px}
.relief-slab.two{left:56%;top:10%;width:36%;height:30%;--rise:49px}
.relief-slab.three{left:56%;top:61%;width:36%;height:29%;--rise:22px}
.relief-slab>i{position:absolute;display:block;backface-visibility:visible}
.relief-slab .slab-top{inset:0;transform:translateZ(var(--rise));border:1px solid #777579;background:radial-gradient(ellipse at var(--light-x) var(--light-y),#57565a88,transparent 95%),repeating-linear-gradient(6deg,#ffffff04 0 1px,transparent 1px 4px),linear-gradient(135deg,#414145,#252528 80%);box-shadow:inset 1px 1px 0 #a4a0a022,inset -1px -1px 0 #0009}
.relief-slab .slab-east{top:0;left:100%;width:var(--rise);height:100%;transform-origin:left;transform:rotateY(-90deg);background:linear-gradient(90deg,#141416,#29282b);border-left:1px solid #38373b}
.relief-slab .slab-south{top:100%;left:0;height:var(--rise);width:100%;transform-origin:top;transform:rotateX(90deg);background:linear-gradient(180deg,#161619,#29292c);border-top:1px solid #424045}
.slab-top svg{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:#bebabc;stroke-width:.65;opacity:.58}
.slab-top b{position:absolute;bottom:9%;left:12%;color:#e1dbd6;font:normal 12px Arial,sans-serif;letter-spacing:.12em;opacity:.8}
.relief-slab.one .slab-top:after{content:'';position:absolute;top:0;right:0;width:3px;height:100%;background:linear-gradient(#ffbba3,var(--accent) 45%,#9b3c2d);box-shadow:-3px 0 12px #ff765922}
.relief-stage[data-moving=true] .relief-scene{transition:transform .16s ease-out}
.hero-map{position:relative;z-index:1;border:1px solid #4a4647;border-radius:12px;padding:23px 26px 7px;background:linear-gradient(140deg,#2c2b2d,#1d1d20 55%,#18181b);box-shadow:inset 0 1px 0 #b8b2ad19,inset 1px 0 0 #ffffff06,0 5px 0 -1px #111113,0 6px 0 -1px #383538,0 24px 35px -20px #000b}
.hero-map .eyebrow{margin-bottom:12px;font-size:10px}
.hero-map>a{padding:15px 0;grid-template-columns:24px 1fr 15px;gap:14px;font-size:16px;border-top-color:#464144}
.hero-map>a:hover{background:linear-gradient(90deg,#ff765908,transparent)}
.hero-map strong{font-weight:500}
.hero-map .map-note{font-size:13px;line-height:1.6;color:var(--muted);margin:18px 0 16px}
.fields{gap:22px}
.fields>div,.unit-row,.resume{border:1px solid #454145;border-radius:12px;background:radial-gradient(ellipse at 0 0,#4c494c27,transparent 70%),linear-gradient(120deg,#242426,#1b1b1e);box-shadow:inset 0 1px 0 #ffffff0b,0 3px 0 -1px #101012,0 4px 0 -1px #39363a,0 18px 24px -22px #000d}
.fields>div{padding:27px 26px 18px}
.fields h3{margin-bottom:20px}
.fields .pending{padding-left:14px}
.unit-row{padding:34px 30px;margin-bottom:28px}
.unit-number{font-size:44px;font-variant-numeric:tabular-nums;color:var(--accent);text-shadow:0 2px 0 #09090b}
.unit-row .lesson-row{padding:18px 0}
.unit-row>.unit-number{padding-top:4px}
.integration{background:linear-gradient(135deg,#262123,#19191c);border-color:#5b4140;box-shadow:inset 3px 0 0 #ff765952,0 15px 30px -25px #000}
.page-heading{position:relative;padding-bottom:24px;border-bottom:1px solid var(--line)}
.page-heading:after{content:'';position:absolute;bottom:-1px;left:0;width:68px;height:2px;background:var(--accent);box-shadow:0 0 17px #ff76592e}
.reader-tools{border-top:0}
.reader-index{padding:19px 16px;border:1px solid #454145;border-radius:10px;background:linear-gradient(135deg,#252528,#1c1c1f);box-shadow:inset 0 1px 0 #ffffff0a,5px 10px 25px -18px #000}
.reader-index .note{background:transparent;border-top:1px solid var(--line);border-radius:0;padding:16px 0 0}
.reading{position:relative}
.practice,.step-panel{background:linear-gradient(125deg,#29272a,#222124);border:1px solid #4d4345;box-shadow:inset 0 1px 0 #ffffff0a,0 12px 22px -20px #000b}
.button,button[data-step]{box-shadow:inset 0 1px 0 #ffffff12,0 2px 2px #0003;transition:background-color .18s,border-color .18s,box-shadow .18s}
.button.primary{background:linear-gradient(155deg,#ff967c,#ff7659 65%,#f57257);border-color:#ff9a80;box-shadow:inset 0 1px 0 #ffd0c33b,0 3px 0 #903c2e,0 11px 25px -14px #ff765996}
.button.primary:hover{background:linear-gradient(155deg,#ffad98,#ff8c73 65%,#ff896e);box-shadow:inset 0 1px 0 #fff4,0 3px 0 #903c2e,0 13px 30px -13px #ff76599a}
.next-links a{border-bottom:1px solid #0c0c0e;box-shadow:0 1px 0 #ffffff08}
@media(min-width:901px){.hero>div:first-child{padding-bottom:28px}.hero .lead{max-width:390px}.hero-map{margin-top:-7px}}
@media(max-width:900px){.hero{grid-template-columns:1fr;gap:38px}.hero-visual{width:100%;max-width:620px;margin:auto}.relief-stage{height:340px}.hero-map{max-width:none}.fields>div{padding:24px}.unit-row{padding:30px 24px}}
@media(max-width:650px){.hero{padding-top:18px;padding-bottom:42px;gap:32px}.hero h1{font-size:clamp(3.6rem,15vw,5.6rem)}.relief-stage{height:245px}.relief-scene{width:75%;max-width:300px}.relief-toolbar{gap:8px}.relief-toolbar>span{font-size:9px;letter-spacing:.09em}.effects-toggle{font-size:11px;padding-inline:4px}.hero-map{padding:20px 18px 6px}.hero-map>a{font-size:15px;gap:10px;padding:16px 0}.unit-row{padding:23px 18px;grid-template-columns:28px minmax(0,1fr);gap:14px}.unit-number{font-size:27px}.fields>div{padding:22px 19px 15px}.reader-index{padding:16px}.page-heading{padding-bottom:20px}.relief-slab.one{--rise:27px}.relief-slab.two{--rise:38px}.relief-slab.three{--rise:18px}}
@media(max-width:350px){.relief-stage{height:210px}.relief-scene{width:74%}.slab-top b{font-size:10px}.hero-map>a{grid-template-columns:21px 1fr 12px}}
@media(prefers-reduced-motion:reduce){.relief-scene{transition:none!important;transform:rotateX(54deg) rotateZ(-28deg)!important}}
body[data-metodo-effects=off] .relief-scene{transition:none}