:root{--navy:#071a33;--coral:#ff4f5d;--cream:#f7f3ed;--white:#fff;--muted:#61718a;--line:#ded6cc}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--navy);font-family:Montserrat,Arial,sans-serif}.shell{width:min(1500px,calc(100% - 72px));margin:auto}.course-header{background:rgba(255,255,255,.78);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.nav{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{font:700 39px/1 'Playfair Display',serif;color:var(--navy);text-decoration:none}.brand span{color:var(--coral)}.nav nav{display:flex;gap:34px}.nav nav a{color:var(--navy);font-weight:700;text-decoration:none;font-size:14px}.course-hero{padding:72px 0 58px}.hero-grid{display:grid;grid-template-columns:1.6fr .65fr;gap:56px;align-items:end}.kicker{font-size:12px;letter-spacing:.2em;font-weight:800;color:var(--coral);text-transform:uppercase}.course-hero h1{font:700 clamp(48px,5vw,80px)/1.02 'Playfair Display',serif;margin:18px 0 20px;letter-spacing:-.025em}.course-hero h1 em{color:var(--coral);font-style:normal}.course-hero p{max-width:900px;font-size:18px;line-height:1.75;color:var(--muted)}.hero-actions{display:flex;gap:14px;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:14px;text-decoration:none;font-size:14px;font-weight:800}.btn.primary{background:var(--coral);color:#fff;box-shadow:0 12px 30px rgba(255,79,93,.18)}.btn.outline{border:1px solid var(--line);background:#fff;color:var(--navy)}.hero-panel{background:var(--navy);color:#fff;border-radius:28px;padding:34px;box-shadow:0 18px 48px rgba(7,26,51,.1)}.hero-panel span{display:block;color:#ff9da5;font-size:11px;font-weight:800;letter-spacing:.17em;text-transform:uppercase}.hero-panel strong{display:block;font:600 27px/1.3 'Playfair Display',serif;margin:16px 0}.hero-panel p{color:#d6dce5;font-size:14px;line-height:1.65;margin:0}.labs{padding:28px 0 90px}.section-head{display:flex;justify-content:space-between;gap:60px;align-items:end;margin-bottom:24px}.section-head h2{font:700 42px/1.1 'Playfair Display',serif;margin:8px 0 0}.section-head p{max-width:620px;color:var(--muted);line-height:1.6}.lab-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.lab-card{min-height:210px;background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:24px;padding:28px;display:grid;grid-template-columns:62px 1fr auto;gap:20px;color:var(--navy);text-decoration:none;position:relative}.lab-card.active{border-color:#ff8d96;box-shadow:0 18px 44px rgba(7,26,51,.06)}.number{font:700 28px/1 'Playfair Display',serif;color:#a7b0bd}.lab-card.active .number{color:var(--coral)}.lab-content h3{font:700 27px/1.2 'Playfair Display',serif;margin:12px 0 10px}.lab-content p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.status{display:inline-flex;background:#eef1f4;color:#78869b;padding:6px 10px;border-radius:999px;font-size:10px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.status.available{background:#e8f7ef;color:#13795b}.tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:17px}.tags span{font-size:10px;padding:6px 9px;border-radius:999px;background:#f5eee8;color:#68758a}.arrow{align-self:center;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--coral);color:white;font-size:22px}footer{border-top:1px solid var(--line);padding:25px 0;color:var(--muted);font-size:12px;text-align:center}@media(max-width:900px){.shell{width:min(100% - 34px,1500px)}.hero-grid,.lab-grid{grid-template-columns:1fr}.section-head{display:block}.hero-panel{margin-top:10px}.course-hero h1{font-size:48px}.nav nav{gap:16px}.lab-card{grid-template-columns:50px 1fr}.arrow{display:none}}@media(max-width:560px){.brand{font-size:31px}.nav{height:64px}.nav nav a:first-child{display:none}.course-hero{padding-top:42px}.course-hero h1{font-size:39px}.hero-actions{flex-direction:column}.btn{width:100%}.lab-card{padding:22px}.section-head h2{font-size:35px}}
/* v2 · ruta completa del laboratorio */
.lab-card.active{transition:transform .18s ease,box-shadow .18s ease}.lab-card.active:hover{transform:translateY(-3px);box-shadow:0 22px 48px rgba(7,26,51,.09)}.route-label{margin-top:15px;font-size:10px;font-weight:800;letter-spacing:.08em;color:var(--coral);text-transform:uppercase}.lab-grid{align-items:stretch}