/* Layout: héroe petróleo partido (tesis a la izquierda, acción a la derecha) sobre papel beige;
   un solo gesto fuerte: el "§" dorado de fondo y el armador de consulta estilo chat. */
:root{
  color-scheme:light;
  --teal:#2A4D4E; --teal-deep:#1F3A3B; --teal-ink:#172C2D;
  --gold:#E8C27A; --gold-dark:#D4AF6A; --gold-ink:#7D5F25; --gold-mid:#A9823D;
  --sand:#F5F3EF; --paper:#FFFFFF; --bubble:#E4EEEC;
  --ink:#1F2A2B; --muted:#5F6B6B; --line:#E3DDD2;
  --on-teal:#F5F3EF; --on-teal-muted:#B9C8C6; --on-teal-line:rgba(245,243,239,.16);
  --f-display:"Newsreader",Georgia,"Times New Roman",serif;
  --f-body:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r:18px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--sand);color:var(--ink);font:17px/1.6 var(--f-body)}
h1,h2,h3{margin:0;text-wrap:balance;font-family:var(--f-display);font-weight:400;letter-spacing:-.01em}
h1 em,h2 em{font-style:italic;color:var(--gold)}
p{margin:0}
a{color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
.in{max-width:1160px;margin:0 auto;padding-inline:20px}
@media (min-width:760px){.in{padding-inline:32px}}
.kicker{font:600 12px/1.3 var(--f-body);letter-spacing:.16em;text-transform:uppercase;color:var(--gold-ink)}
.hero .kicker{color:var(--gold)}

/* ---------- HERO ---------- */
.hero{position:relative;overflow:hidden;background:var(--teal);color:var(--on-teal);padding-block:18px 56px;border-radius:0 0 32px 32px}
.hero::before{content:"§";position:absolute;right:-4%;bottom:-38%;font:400 clamp(360px,52vw,720px)/1 var(--f-display);color:var(--gold);opacity:.07;pointer-events:none}
.hero > .in{position:relative}
.top{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--on-teal-line)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand .mark{width:38px;height:38px;border-radius:10px;background:var(--gold);color:var(--teal-deep);display:grid;place-items:center;font:italic 400 26px/1 var(--f-display);flex:none}
.brand b{display:block;font-weight:700;font-size:16.5px;color:#fff;line-height:1.2}
.brand small{display:block;font-size:12.5px;color:var(--on-teal-muted);line-height:1.3}
.nav{display:flex;gap:24px;align-items:center;font-size:14.5px}
.nav a{text-decoration:none;color:var(--on-teal-muted)}
.nav a:hover{color:#fff}
.nav .pill{color:var(--teal-deep);background:var(--gold);padding:7px 14px;border-radius:99px;font-weight:600}
.nav .pill:hover{color:var(--teal-deep);background:var(--gold-dark)}
.nav .back{color:var(--gold);font-weight:500}
.nav .lg{display:none}
@media (min-width:860px){.nav .lg{display:inline}}

.hero-grid{display:grid;gap:36px;padding-top:40px}
@media (min-width:980px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;padding-top:56px}}
.hero-copy{display:flex;flex-direction:column;gap:18px;min-width:0}
.hero h1{font-size:clamp(40px,6.4vw,72px);line-height:1.02;color:#fff}
.lead{color:var(--on-teal-muted);font-size:18px;max-width:52ch}
.ctas{display:flex;flex-wrap:wrap;gap:10px;padding-top:4px}
.creds{display:flex;flex-direction:column;gap:2px;padding-top:18px;margin-top:6px;border-top:1px solid var(--on-teal-line);font-size:13px;color:var(--on-teal-muted)}
.creds b{color:#fff;font-weight:600;font-size:14px}
.creds span{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- BUTTONS ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:12px;padding:14px 20px;font:600 16px/1.2 var(--f-body);text-decoration:none;cursor:pointer;border:1px solid transparent;transition:background .15s,border-color .15s,transform .15s}
.btn:active{transform:translateY(1px)}
.btn svg{width:19px;height:19px;flex:none}
.btn-gold{background:var(--gold);color:var(--teal-deep)}
.btn-gold:hover{background:var(--gold-dark)}
.btn-ghost{background:transparent;border-color:rgba(245,243,239,.32);color:var(--on-teal)}
.btn-ghost:hover{border-color:var(--gold);color:#fff}
.btn-line{background:var(--paper);border-color:var(--line);color:var(--teal)}
.btn-line:hover{border-color:var(--teal)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-deep)}

/* ---------- COMPOSER (home) ---------- */
.composer{background:var(--paper);color:var(--ink);border-radius:24px;padding:22px;box-shadow:0 30px 70px rgba(10,24,24,.35);display:flex;flex-direction:column;gap:16px;min-width:0}
.composer-h{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.composer-h h2{font-size:26px;color:var(--teal)}
.composer-h span{font-size:13px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{appearance:none;border:1px solid var(--line);background:var(--sand);color:var(--ink);border-radius:99px;padding:8px 14px;font:500 14.5px/1.2 var(--f-body);cursor:pointer;text-decoration:none;transition:background .15s,border-color .15s}
.chip:hover{border-color:var(--teal)}
.chip[aria-pressed="true"]{background:var(--teal);border-color:var(--teal);color:#fff}
.chat{background:#EFEBE3;border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:6px;min-height:104px;justify-content:flex-end}
.chat .to{font-size:12px;color:var(--muted);text-align:center;padding-bottom:4px}
.bubble{align-self:flex-end;max-width:88%;background:var(--bubble);border-radius:14px 14px 4px 14px;padding:10px 12px 6px;font-size:15.5px;line-height:1.45;box-shadow:0 1px 0 rgba(0,0,0,.06)}
.bubble .meta{display:block;text-align:right;font-size:11px;color:var(--muted);padding-top:2px}
.bubble .meta b{color:var(--teal);font-weight:600;letter-spacing:-.1em;padding-left:4px}
.composer-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}
.composer-actions .btn{flex:1 1 220px}
.composer-actions .more{font-size:14.5px;font-weight:600;color:var(--teal);text-decoration:none;border-bottom:1.5px solid var(--gold)}
.composer-actions .more[hidden]{display:none}

/* ---------- TOPICS (landing hero card) ---------- */
.topics{background:var(--paper);color:var(--ink);border-radius:24px;padding:8px;box-shadow:0 30px 70px rgba(10,24,24,.35);min-width:0}
.topics-h{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 14px 10px}
.topics-h h2{font-size:22px;color:var(--teal)}
.topics-h span{font-size:12.5px;color:var(--muted);text-align:right}
.topics .group-label{padding:12px 14px 6px;font:600 11.5px/1.3 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold-ink)}
.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.list a{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 14px;padding:13px 14px;border-radius:14px;text-decoration:none;color:inherit;transition:background .15s}
.list a:hover{background:var(--sand)}
.list strong{font-weight:600;font-size:16px;line-height:1.35}
.list small{grid-column:1;color:var(--muted);font-size:14px;line-height:1.4}
.go{grid-row:1/3;grid-column:2;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--sand);color:var(--teal);transition:background .15s,color .15s}
.go svg{width:17px;height:17px}
.list a:hover .go{background:var(--teal);color:#fff}
.list a[data-wa] .go{background:var(--bubble);color:var(--teal)}
.list a[data-wa]:hover .go{background:var(--teal);color:#fff}

/* ---------- SECTIONS ---------- */
main{display:flex;flex-direction:column;gap:88px;padding-block:72px 64px}
.sec{display:grid;gap:28px}
@media (min-width:980px){.sec.split{grid-template-columns:minmax(0,.8fr) minmax(0,2fr);gap:56px}.sec.split .sec-h{position:sticky;top:24px;align-self:start}}
.sec-h{display:flex;flex-direction:column;gap:10px;min-width:0}
.sec-h h2{font-size:clamp(32px,4.2vw,46px);line-height:1.08;color:var(--teal)}
.sec-h h2 em{color:var(--gold-ink)}
.sec-h p{color:var(--muted);max-width:46ch}

/* areas (home) */
.areas{background:var(--paper);border:1px solid var(--line);border-radius:28px;overflow:hidden}
.area{display:grid;gap:14px;padding:28px 24px;border-top:1px solid var(--line)}
.area:first-child{border-top:0}
@media (min-width:760px){.area{grid-template-columns:200px minmax(0,1fr);gap:28px;padding:34px 36px}}
.area-name{display:flex;flex-direction:column;gap:6px}
.area-name h3{font-size:36px;line-height:1;color:var(--teal)}
.area-name span{font-size:13px;color:var(--muted)}
.area-body{display:flex;flex-direction:column;gap:14px;min-width:0}
.area-cols{display:grid;gap:24px}
@media (min-width:760px){.area-cols{grid-template-columns:1fr 1fr}}
.area-col{display:flex;flex-direction:column;gap:10px}
.area-col h4{margin:0;font:600 12px/1.3 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold-ink)}
.area p{font-size:16px;color:var(--ink)}
.area .chips .chip{background:var(--paper);font-size:14px;padding:6px 12px}
.area .chips .chip:hover{background:var(--sand)}
.area .go-link{font-size:15px;font-weight:600;color:var(--teal);text-decoration:none;display:inline-flex;gap:6px;align-items:center;align-self:flex-start;border-bottom:1.5px solid var(--gold)}
.area.other{background:var(--sand)}

/* band */
.band{position:relative;overflow:hidden;background:var(--teal-deep);color:var(--on-teal);border-radius:28px;padding:36px 28px;display:grid;gap:22px;align-items:center}
@media (min-width:860px){.band{grid-template-columns:minmax(0,1fr) auto;padding:48px 52px}}
.band::after{content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;border:1.5px solid var(--gold);opacity:.25}
.band h2{font-size:clamp(30px,3.6vw,40px);color:#fff;line-height:1.1}
.band p{color:var(--on-teal-muted);max-width:52ch;padding-top:8px}
.band .kicker{color:var(--gold)}

/* steps (secuencia real) */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:14px;counter-reset:s}
@media (min-width:760px){.steps{grid-template-columns:repeat(3,1fr)}}
.steps li{counter-increment:s;display:flex;flex-direction:column;gap:6px;padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r)}
.steps li::before{content:counter(s);font:italic 400 44px/1 var(--f-display);color:var(--gold-mid);padding-bottom:10px}
.steps strong{font-weight:600;font-size:17px}
.steps span{color:var(--muted);font-size:15.5px}

/* note */
.note{display:grid;gap:6px;padding:22px 24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);position:relative}
.note::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--gold)}
.note strong{font:400 24px/1.2 var(--f-display);color:var(--teal)}
.note span{color:var(--muted)}
.note a{color:var(--teal);font-weight:600}

/* bring */
.bring{list-style:none;margin:0;padding:0;display:grid;gap:10px;grid-template-columns:1fr}
@media (min-width:600px){.bring{grid-template-columns:1fr 1fr}}
.bring li{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:var(--paper);border:1px solid var(--line);border-radius:14px;font-size:15.5px}
.bring li::before{content:"";flex:none;width:18px;height:18px;margin-top:3px;border-radius:5px;border:1.5px solid var(--gold-mid)}

/* faq */
.faq{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.faq details + details{border-top:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:20px 60px 20px 24px;font:400 21px/1.3 var(--f-display);color:var(--teal);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:24px;top:50%;width:10px;height:10px;border-right:2px solid var(--gold-mid);border-bottom:2px solid var(--gold-mid);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 24px 22px;color:var(--muted);max-width:66ch}

/* quote */
.quote-sec{display:grid;gap:24px}
@media (min-width:980px){.quote-sec{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:56px;align-items:end}}
.quote{font:italic 400 clamp(30px,4.4vw,50px)/1.12 var(--f-display);color:var(--teal);text-wrap:balance}
.quote::before{content:"“";display:block;color:var(--gold-mid);font-size:1.6em;line-height:.6;padding-bottom:10px}
.prose{display:flex;flex-direction:column;gap:14px;color:var(--ink);max-width:56ch}

/* contact */
.contact{display:grid;gap:28px;background:var(--paper);border:1px solid var(--line);border-radius:28px;padding:30px 24px}
@media (min-width:860px){.contact{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;padding:44px 48px}}
.info{display:flex;flex-direction:column}
.info div{display:flex;justify-content:space-between;gap:16px;padding-block:13px;border-bottom:1px solid var(--line);font-size:15.5px}
.info div:first-child{padding-top:0}
.info span:first-child{color:var(--muted);flex:none}
.info span:last-child{text-align:right;font-weight:500;min-width:0;overflow-wrap:anywhere}
.info a{text-decoration:none;border-bottom:1px solid var(--gold)}
.row{display:flex;flex-wrap:wrap;gap:10px}
.others{display:flex;flex-wrap:wrap;gap:8px}
.others a{background:var(--sand);border:1px solid var(--line);border-radius:99px;padding:8px 14px;font-size:14.5px;font-weight:500;text-decoration:none;color:var(--teal)}
.others a:hover{border-color:var(--teal)}
.mini-label{font:600 12px/1.3 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}

/* ---------- FOOTER ---------- */
footer{background:var(--teal-ink);color:var(--on-teal-muted);font-size:14px;line-height:1.6;padding-block:44px calc(120px + env(safe-area-inset-bottom,0px))}
@media (min-width:760px){footer{padding-bottom:48px}}
.foot{display:grid;gap:24px}
@media (min-width:860px){.foot{grid-template-columns:1.2fr 1fr 1fr}}
.foot > div{display:flex;flex-direction:column;gap:4px}
.foot .brand b{font-size:18px}
.foot h4{margin:0 0 4px;font:600 12px/1.3 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.foot a{color:var(--on-teal);text-decoration:none}
.foot a:hover{color:var(--gold)}
.fine{grid-column:1/-1;border-top:1px solid var(--on-teal-line);padding-top:18px;font-size:12.5px;font-variant-numeric:tabular-nums}

/* ---------- STICKY WHATSAPP ---------- */
.bar{position:fixed;left:0;right:0;bottom:0;z-index:10;padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));background:linear-gradient(to top,var(--sand) 68%,rgba(245,243,239,0))}
.bar .btn{width:100%;max-width:440px;margin:0 auto;display:flex;font-size:16.5px;padding:16px 18px;border-color:rgba(31,58,59,.22);box-shadow:0 8px 22px rgba(23,44,45,.22)}
@media (min-width:760px){
  .bar{left:auto;right:24px;bottom:24px;padding:0;background:none}
  .bar .btn{width:auto;border-radius:99px;padding:14px 22px}
}