/* ============================================================
   xiexie.es — Portada · hoja de estilos propia
   Sin CDN, sin fuentes externas: funciona offline.
   Paleta «papel y tinta»: papel cálido, tinta y rojo bermellón.
   Sin degradados ni halos de color.
   ============================================================ */

:root{
  --bg:#f6f2ea; --bg2:#efe8dc;
  --card:#fffdf8; --card2:#f4efe5;
  --line:#ded4c5;
  --txt:#221e1a; --mut:#5f574d;
  --acc:#b23a1f; --acc2:#8d2c15;
  --ok:#3f6b46; --warn:#7d4f0c; --cn:#b23a1f;
  --r:8px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
/* La cabecera es fija: sin esto, al pulsar un enlace del menú el título de la
   sección queda debajo de ella y no se ve. El alto lo mide el JavaScript,
   porque cambia según el ancho (en móvil ocupa dos líneas). */
#chino, #salud, #programacion, #apartados, #apuntate, #precios, #requisitos{
  scroll-margin-top:calc(var(--alto-cabecera, 88px) + 16px);
}
body{
  margin:0;color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  background:var(--bg);
  min-height:100vh; line-height:1.55;
}
img{max-width:100%;display:block}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* ---------- Cabecera ---------- */
header.top{
  position:sticky;top:0;z-index:50;
  background:#fffdf8;border-bottom:1px solid var(--line);
}
.top .wrap{display:flex;align-items:center;gap:18px;padding-top:13px;padding-bottom:13px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.2px;color:var(--txt)}
.brand:hover{text-decoration:none}
.brand .cn{
  font-size:15px;padding:3px 9px;border-radius:9px;
  background:#f6e7e0;
  border:1px solid var(--line);font-weight:700;
}
nav.main{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
nav.main a{color:var(--mut);font-size:14px;padding:7px 11px;border-radius:10px}
nav.main a:hover{color:var(--txt);background:var(--card);text-decoration:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--line);background:var(--card);color:var(--txt);
  padding:11px 18px;border-radius:12px;font-size:14.5px;font-weight:650;
  cursor:pointer;font-family:inherit;transition:.16s;
}
.btn:hover{transform:translateY(-2px);border-color:var(--acc);text-decoration:none}
.btn.primary{
  background:var(--acc);
  color:#fff;border-color:transparent;font-weight:700;
}
.btn.ghost{background:transparent}
.btn.wide{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}
.btn.lang{padding:9px 13px;font-size:14px;gap:6px;white-space:nowrap}
.btn.lang span{font-weight:750}
html[lang^="zh"] .hero h1{letter-spacing:0;line-height:1.25}
html[lang^="zh"] .sec-head h2{letter-spacing:0}
html[lang^="zh"] .kicker{letter-spacing:.06em}

/* ---------- Hero ---------- */
.hero{padding:64px 0 34px;text-align:center}
.kicker{
  color:var(--acc);font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  font-size:12px;margin-bottom:14px;
}
.hero h1{font-size:44px;line-height:1.12;margin:0 0 16px;letter-spacing:-.8px}
.hero h1 .grad{color:var(--acc)}
.hero p.lead{color:var(--mut);font-size:18px;max-width:720px;margin:0 auto 12px}
.hero p.lead strong{color:var(--txt)}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.trust{display:flex;gap:9px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.trust span{
  font-size:12.5px;color:var(--mut);background:var(--card);
  border:1px solid var(--line);border-radius:999px;padding:6px 13px;
}

/* ---------- Secciones ---------- */
section{padding:44px 0}
.sec-head{margin-bottom:26px}
.sec-head h2{font-size:29px;margin:0 0 8px;letter-spacing:-.4px}
.sec-head p{color:var(--mut);margin:0;max-width:720px}
.bi{color:var(--mut);font-size:.72em;display:block;margin-top:3px;font-weight:500}

/* ---------- Dos caminos ---------- */
.doors{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(272px,1fr))}
.door{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;display:flex;flex-direction:column;
  box-shadow:0 1px 2px rgba(34,30,26,.05);
}
.door .ico{font-size:32px;margin-bottom:10px}
.door h3{margin:0 0 8px;font-size:21px}
.door p{color:var(--mut);margin:0 0 14px;font-size:14.5px}
.door ul{margin:0 0 18px;padding-left:20px;color:var(--mut);font-size:14px}
.door ul li{margin-bottom:5px}
.door .btn{margin-top:auto}

/* ---------- Tercera puerta: el curso online, destacado ---------- */
.door.destacada{border-color:var(--acc);position:relative;padding-top:32px}
.door .etiqueta-gratis{
  position:absolute;top:-11px;left:22px;background:var(--acc);color:#fff;
  font-size:10.5px;font-weight:800;letter-spacing:.05em;padding:4px 11px;
  border-radius:999px;text-transform:uppercase;
}
.door .dos-botones{display:flex;gap:9px;flex-wrap:wrap;margin-top:auto}
.door .dos-botones .btn{margin-top:0;flex:1;min-width:134px;padding:10px 12px;font-size:13.5px}

/* ---------- Enlace al curso en la cabecera ---------- */
nav.main a.nav-curso{display:inline-flex;align-items:center;gap:7px;font-weight:650;color:var(--acc)}
nav.main a.nav-curso:hover{background:#f6e7e0;color:var(--acc)}
nav.main a.nav-curso .gratis{
  background:var(--ok);color:#fff;font-size:9.5px;font-weight:800;
  letter-spacing:.07em;padding:2px 6px;border-radius:4px;
}

/* ---------- Tres apartados ---------- */
.cards{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;display:flex;flex-direction:column;position:relative;overflow:hidden;
}
.card.live{border-color:var(--acc)}
.card.live::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;
  background:var(--acc);
}
.card .ico{font-size:28px;margin-bottom:9px}
.card h3{margin:0 0 6px;font-size:19px}
.card p{color:var(--mut);font-size:14px;margin:0 0 14px}
.card .btn{margin-top:auto}
.tag{
  display:inline-block;font-size:11px;padding:3px 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--card2);color:var(--mut);
  margin-bottom:10px;width:fit-content;font-weight:650;
}
.tag.ok{background:#e6eee7;color:var(--ok);border-color:#c3d5c6}
.tag.soon{background:#f7ecd9;color:var(--warn);border-color:#e6d3ab}

/* ---------- Pasos ---------- */
.steps{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.step .n{
  width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-weight:800;background:var(--acc);color:#fff;margin-bottom:11px;
}
.step h4{margin:0 0 5px;font-size:16px}
.step p{margin:0;color:var(--mut);font-size:13.5px}

/* ---------- Precios ---------- */
.price-box{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
}
.price-item{text-align:center}
.price-item .amount{font-size:27px;font-weight:800;letter-spacing:-.6px}
.price-item .amount.free{color:var(--ok)}
.price-item .lbl{color:var(--mut);font-size:13.5px;margin-top:5px}
.price-note{color:var(--mut);font-size:13.5px;margin-top:16px;text-align:center}
.price-note b{color:var(--txt)}

/* ---------- Formulario ---------- */
.form-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:28px;box-shadow:0 1px 3px rgba(34,30,26,.06);
}
.tabs{display:flex;gap:8px;margin-bottom:22px;flex-wrap:wrap}
.tab{
  flex:1;min-width:180px;padding:13px 16px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line);background:var(--card2);color:var(--mut);
  font-weight:700;font-size:14.5px;text-align:center;font-family:inherit;transition:.16s;
}
.tab:hover{color:var(--txt)}
.tab.active{background:var(--acc);color:#fff;border-color:transparent}
.grid2{display:grid;gap:15px;grid-template-columns:1fr 1fr}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:15px}
.field label{font-size:13px;font-weight:650;color:var(--txt)}
.field label .req{color:var(--cn)}
.field .hint{font-size:12px;color:var(--mut);font-weight:400}
input[type=text],input[type=email],input[type=tel],select,textarea{
  width:100%;padding:12px 14px;border-radius:11px;border:1px solid var(--line);
  background:var(--card2);color:var(--txt);font-size:14.5px;font-family:inherit;outline:none;
}
input:focus,select:focus,textarea:focus{border-color:var(--acc)}
select{appearance:none;cursor:pointer}
textarea{resize:vertical;min-height:88px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--mut);margin:6px 0 18px}
.check input{width:auto;margin-top:3px;flex:0 0 auto;accent-color:var(--acc)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.msg{border-radius:12px;padding:14px 16px;font-size:14.5px;margin-bottom:18px;display:none;border:1px solid}
.msg.show{display:block}
.msg.ok{background:#e8f0e9;border-color:#bcd4c0;color:#2f5738}
.msg.err{background:#fbe9e5;border-color:#e8bfb4;color:#8d2c15}

/* ---------- Requisitos técnicos ---------- */
.reqs{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.req{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:17px}
.req b{display:block;font-size:15px;margin-bottom:4px}
.req span{color:var(--mut);font-size:13px;line-height:1.45}
.aviso-tec{
  margin-top:16px;background:#f9efdc;border:1px solid #e3cfa6;
  color:#6b4a12;border-radius:8px;padding:15px 17px;font-size:14px;
}
.aviso-tec b{color:#4a3208}

/* ---------- Pie ---------- */
footer{border-top:1px solid var(--line);margin-top:38px;padding:30px 0 46px;color:var(--mut);font-size:13.5px}
footer .wrap{display:flex;gap:18px;justify-content:space-between;flex-wrap:wrap;align-items:center}
footer nav{display:flex;gap:16px;flex-wrap:wrap}
footer a{color:var(--mut)}
footer a:hover{color:var(--txt)}

/* ---------- Ventana de confirmación ---------- */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-fondo{position:absolute;inset:0;background:rgba(34,30,26,.55)}
.modal-caja{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:32px 28px;max-width:430px;width:100%;text-align:center;
  box-shadow:0 20px 55px rgba(34,30,26,.3);animation:aparece .18s ease-out;
}
@keyframes aparece{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.modal-ico{font-size:42px;line-height:1;margin-bottom:14px}
.modal-caja h3{margin:0 0 10px;font-size:21px;line-height:1.3}
.modal-caja p{color:var(--mut);font-size:14.5px;margin:0 0 10px}
.modal-caja .modal-sub{font-size:13px;margin-bottom:20px}

/* ---------- Responsive ---------- */
@media(max-width:760px){
  .hero{padding:44px 0 24px}
  .hero h1{font-size:31px}
  .hero p.lead{font-size:16px}
  .doors{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .sec-head h2{font-size:24px}
  .form-wrap{padding:20px}
  nav.main{width:100%;margin-left:0}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important}
  html{scroll-behavior:auto}
}

/* ---------- Titulares con serif: aire editorial, no de plantilla ---------- */
h1,h2,h3,h4{font-family:Georgia,"Iowan Old Style","Times New Roman","Songti SC","SimSun",serif;font-weight:700}
h1{letter-spacing:-.4px}
html[lang^="zh"] h1,html[lang^="zh"] h2,html[lang^="zh"] h3{letter-spacing:0}