/* TarifaJusta.cl — estilos (sin dependencias externas) */
:root{
  --ink:#0d1b24;--fg:#1c2b35;--mut:#55656f;--bg:#f5f7f6;--surface:#fff;--bd:#e1e7e5;
  --navy:#0b2230;--navy2:#103245;
  --acc:#0a7d4f;--acc-d:#07633f;--acc-l:#e7f5ee;--acc-on-dark:#3ddc97;
  --volt:#f5b700;--volt-l:#fff6d9;
  --r:14px;--shadow:0 1px 2px rgba(13,27,36,.05),0 8px 24px -12px rgba(13,27,36,.18);
  --font:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;font:16px/1.6 var(--font);color:var(--fg);background:var(--surface);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--acc)}a:hover{color:var(--acc-d)}
:focus-visible{outline:3px solid var(--volt);outline-offset:2px;border-radius:4px}
.w{max-width:1120px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 12px;border-radius:8px;z-index:100}.skip:focus{left:8px}

/* Tipografía */
h1,h2,h3{color:var(--ink);letter-spacing:-.02em;line-height:1.15;margin:0}
h1{font-size:clamp(1.85rem,5.2vw,3.1rem);font-weight:800}
h2{font-size:clamp(1.5rem,3.4vw,2.15rem);font-weight:800}
h3{font-size:1.1rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--acc);margin-bottom:12px}
.small{font-size:.875rem;color:var(--mut)}
.center{text-align:center}
.mut{color:var(--mut)}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--bd)}
header .w{display:flex;justify-content:space-between;align-items:center;height:64px;gap:12px}
.logo{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo:hover{color:var(--ink)}.logo b{color:var(--acc)}
.logo .mark{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--navy);color:var(--volt)}
.logo .mark svg{width:16px;height:16px}
.nav{display:flex;align-items:center;gap:22px}
.nav a.lnk{display:none;color:var(--mut);text-decoration:none;font-size:.93rem;font-weight:500}.nav a.lnk:hover{color:var(--ink)}
@media(min-width:880px){.nav a.lnk{display:inline}}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--acc);color:#fff;padding:15px 24px;border-radius:12px;text-decoration:none;font:700 1rem/1.2 var(--font);border:0;cursor:pointer;width:100%;text-align:center;box-shadow:0 6px 18px -6px rgba(10,125,79,.55);transition:background .15s,transform .15s,box-shadow .15s}
.btn:hover{background:var(--acc-d);color:#fff;transform:translateY(-1px)}
.btn:active{transform:none}
.btn:disabled{opacity:.6;cursor:progress;transform:none}
.btn svg{width:18px;height:18px;flex:none}
.btn-sm{padding:9px 14px;font-size:.9rem;border-radius:10px;width:auto;box-shadow:none}
@media(min-width:720px){.btn{width:auto}}

/* Hero */
.hero{position:relative;background:radial-gradient(1200px 500px at 50% -10%,rgba(61,220,151,.16),transparent 60%),linear-gradient(180deg,var(--navy),var(--navy2));color:#cfdbe2;overflow:hidden;text-align:center}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px;mask-image:linear-gradient(180deg,#000 30%,transparent);-webkit-mask-image:linear-gradient(180deg,#000 30%,transparent);pointer-events:none}
.hero .w{position:relative;max-width:820px;padding-top:80px;padding-bottom:88px}
.hero .eyebrow{color:var(--acc-on-dark)}
.hero h1{color:#fff;font-size:clamp(2.3rem,7vw,4.2rem);margin-bottom:24px}
.hero h1 span{color:var(--acc-on-dark)}
.hero .lead{font-size:clamp(1.1rem,2.4vw,1.3rem);color:#dbe6ec;max-width:560px;margin:0 auto 32px}
.hero .btn{padding:18px 30px;font-size:1.08rem}
.hero-sub{margin:16px 0 0;font-weight:700;color:#fff}
@media(min-width:960px){.hero .w{padding-top:120px;padding-bottom:128px}}

/* Secciones */
.sec{padding:72px 0}
.sec-alt{background:var(--bg);border-top:1px solid var(--bd);border-bottom:1px solid var(--bd)}
.sec-head{max-width:680px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head p{color:var(--mut);margin-top:12px;font-size:1.15rem}
.narrow{max-width:760px}
@media(min-width:720px){.sec{padding:104px 0}}

/* Historia */
.story{text-align:center}
.story h2{margin-bottom:8px}
.story .big{font-size:clamp(1.5rem,3.4vw,2.15rem);font-weight:800;color:var(--acc);letter-spacing:-.02em;line-height:1.15;margin-bottom:32px}
.story p{font-size:1.15rem;color:var(--mut)}
.story p strong{color:var(--ink)}
.story p:last-child{margin-bottom:0}

/* Pasos */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:16px;counter-reset:s}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--bd);border-radius:var(--r);padding:28px;box-shadow:var(--shadow);text-align:center}
.steps li .ico{margin:0 auto 16px}
.steps li h3{font-size:1.2rem;margin-bottom:8px}
.steps li h3::before{content:counter(s) ". ";color:var(--acc)}
.steps li p{color:var(--mut);margin:0}
.ico{display:grid;place-items:center;width:52px;height:52px;border-radius:14px;background:var(--acc-l);color:var(--acc)}
.ico svg{width:24px;height:24px}
@media(min-width:880px){.steps{grid-template-columns:repeat(3,1fr);gap:24px}.steps li{padding:36px 28px}}

/* Precio */
.kpis{display:grid;gap:12px;margin:0 0 28px}
@media(min-width:600px){.kpis{grid-template-columns:repeat(3,1fr)}}
.kpi{background:var(--bg);border:1px solid var(--bd);border-radius:16px;padding:24px 16px;text-align:center}
.kpi b{display:block;font-size:clamp(1.8rem,4.5vw,2.4rem);color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.kpi span{font-size:.95rem;color:var(--mut);line-height:1.35;display:block;margin-top:6px}
.kpi.hl{background:var(--acc-l);border-color:transparent}.kpi.hl b{color:var(--acc)}

/* Formulario */
.form-sec{background:linear-gradient(180deg,var(--bg),#fff)}
.form-wrap{display:grid;gap:32px}
@media(min-width:960px){.form-wrap{grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}.form-aside{position:sticky;top:96px}}
.form-aside>p:not(.aviso){color:var(--mut);font-size:1.05rem;margin-top:12px}
.checks{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px}
.checks li{display:flex;gap:10px;align-items:flex-start;color:var(--fg)}
.checks svg{width:20px;height:20px;flex:none;color:var(--acc);margin-top:2px}
.aviso{display:flex;gap:10px;align-items:flex-start;margin:24px 0 0;font-size:.85rem;color:var(--mut)}
.aviso svg{flex:none;width:16px;height:16px;margin-top:3px}
.form-card{background:var(--surface);border:1px solid var(--bd);border-radius:20px;padding:24px;box-shadow:0 1px 2px rgba(13,27,36,.04),0 24px 48px -24px rgba(13,27,36,.25)}
@media(min-width:720px){.form-card{padding:32px}}
form{display:grid;gap:16px}
.row{display:grid;gap:16px}
@media(min-width:600px){.row{grid-template-columns:1fr 1fr}}
label{display:block;font-weight:600;font-size:.92rem;color:var(--ink)}
input,select{display:block;width:100%;padding:13px 14px;border:1px solid #cfd8d5;border-radius:10px;font:400 1rem/1.3 var(--font);color:var(--ink);background:#fff;margin-top:6px;transition:border-color .15s,box-shadow .15s;min-height:48px}
select{appearance:none;-webkit-appearance:none;padding-right:40px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2355656f'%3E%3Cpath d='M5.3 7.3a1 1 0 0 1 1.4 0L10 10.6l3.3-3.3a1 1 0 1 1 1.4 1.4l-4 4a1 1 0 0 1-1.4 0l-4-4a1 1 0 0 1 0-1.4z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:18px}
input:hover,select:hover{border-color:#aebcb7}
input:focus,select:focus{outline:none;border-color:var(--acc);box-shadow:0 0 0 4px rgba(10,125,79,.15)}
.hint{display:block;font-weight:400;font-size:.84rem;color:var(--mut);margin-top:2px}
.file input[type=file]{padding:18px 14px;border:2px dashed #b9c8c3;background:var(--bg);cursor:pointer;font-size:.92rem;color:var(--mut)}
.file input[type=file]:hover{border-color:var(--acc);background:var(--acc-l)}
.file input[type=file]::file-selector-button{font:700 .9rem var(--font);border:0;border-radius:8px;padding:10px 14px;margin-right:12px;background:var(--navy);color:#fff;cursor:pointer}
.consent{display:flex;gap:10px;align-items:flex-start;font-weight:400;color:var(--mut);font-size:.875rem;line-height:1.5}
.consent input{width:20px;height:20px;min-height:0;margin:1px 0 0;padding:0;flex:none;accent-color:var(--acc)}
form .btn{width:100%;padding:17px 24px;font-size:1.03rem}
#msg{font-weight:600;margin:0;min-height:1.6em;color:var(--ink)}
#msg:empty{min-height:0}
.secure{display:flex;gap:8px;align-items:center;justify-content:center;font-size:.82rem;color:var(--mut);margin:0}
.secure svg{width:14px;height:14px}

/* Detalle técnico (desplegable) */
.tech-sec{padding-top:56px}
.tech{background:var(--surface);border:1px solid var(--bd);border-radius:var(--r);padding:0 22px;transition:box-shadow .15s}
.tech[open]{box-shadow:var(--shadow)}
.tech summary{cursor:pointer;list-style:none;padding:20px 36px 20px 0;font-weight:700;color:var(--ink);position:relative}
.tech summary span{display:block;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mut);margin-bottom:2px}
.tech summary::-webkit-details-marker{display:none}
.tech summary::after{content:"";position:absolute;right:6px;top:50%;width:10px;height:10px;border-right:2px solid var(--mut);border-bottom:2px solid var(--mut);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.tech[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.tech-body{padding:6px 0 22px;border-top:1px solid var(--bd);font-size:.95rem}
.tech-body p{margin:12px 0 0}
.tech-body h3{font-size:1rem;margin-top:22px}
.tech-body h3+p{margin-top:4px;color:var(--mut)}

/* Páginas legales */
.legal{padding:48px 0 72px}
.legal .w{max-width:780px}
.legal h1{font-size:clamp(1.8rem,4.5vw,2.5rem);margin-bottom:8px}
.legal h2{font-size:1.2rem;margin:36px 0 10px;padding-top:24px;border-top:1px solid var(--bd)}
.legal p{color:var(--fg);line-height:1.7}
.legal .small{margin-bottom:28px}
.crumb{display:inline-flex;gap:6px;align-items:center;font-size:.88rem;font-weight:600;text-decoration:none;margin-bottom:20px}

/* Footer */
footer{background:var(--navy);color:#9fb3bf;padding:36px 0;font-size:.9rem}
footer .w{display:grid;gap:14px}
footer .logo{color:#fff}footer .logo:hover{color:#fff}footer .logo b{color:var(--acc-on-dark)}
footer nav{display:flex;flex-wrap:wrap;gap:8px 22px}
footer a{color:#cfdbe2;text-decoration:none}footer a:hover{color:#fff;text-decoration:underline}
footer .small{color:#9fb3bf;margin:0}
@media(min-width:720px){footer .w{grid-template-columns:auto 1fr;align-items:center}footer nav{justify-content:flex-end}footer .small{grid-column:1/-1;padding-top:14px;border-top:1px solid rgba(255,255,255,.1)}}