/* ============================================================
   YDZU.RU — инструкторы на курортах
   Alpine-editorial design system. Mobile-first.
   ============================================================ */

:root{
  --snow:#eef3f8;
  --snow-2:#e4ecf4;
  --paper:#ffffff;
  --ink:#0d1b2a;
  --ink-soft:#3a4a5c;
  --muted:#6a7888;
  --navy:#0a2540;
  --azure:#1f7fbf;
  --azure-deep:#155e8e;
  --glacier:#7fc4e8;
  --sunrise:#ff6a3d;
  --sunrise-deep:#e7522a;
  --line:rgba(10,37,64,.10);
  --line-2:rgba(10,37,64,.16);
  --good:#188a5b;
  --shadow-sm:0 1px 2px rgba(13,27,42,.06),0 2px 8px rgba(13,27,42,.05);
  --shadow:0 6px 24px rgba(13,27,42,.10);
  --shadow-lg:0 18px 50px rgba(13,27,42,.16);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1120px;
  --display:"Unbounded",system-ui,sans-serif;
  --body:"Golos Text",system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--body);
  color:var(--ink);
  background:var(--snow);
  line-height:1.6;
  font-size:17px;
  letter-spacing:.005em;
}
img{max-width:100%;display:block}
a{color:var(--azure-deep);text-decoration:none}
a:hover{color:var(--sunrise-deep)}

/* topographic backdrop */
body::before{
  content:"";
  position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(127,196,232,.20), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(31,127,191,.10), transparent 55%),
    var(--snow);
}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--display);line-height:1.12;letter-spacing:-.01em;color:var(--navy);font-weight:800;margin:0 0 .5em}
h1{font-size:clamp(30px,6vw,52px);font-weight:800}
h2{font-size:clamp(24px,4vw,34px);margin-top:0}
h3{font-size:clamp(19px,2.6vw,23px);font-weight:700}
p{margin:0 0 1em}
.lead{font-size:clamp(18px,2.4vw,21px);color:var(--ink-soft);line-height:1.55}
.eyebrow{font-family:var(--display);font-weight:600;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--azure-deep)}
.section{padding:64px 0}
.section-tight{padding:44px 0}
.center{text-align:center}
.mw-720{max-width:720px}
.mw-820{max-width:820px}
.mx-auto{margin-left:auto;margin-right:auto}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:11px;color:var(--navy)}
.brand:hover{color:var(--navy)}
.brand .logo{width:38px;height:38px;flex:none}
.brand b{font-family:var(--display);font-weight:800;font-size:19px;letter-spacing:-.01em;display:block;line-height:1}
.brand span{font-size:11.5px;color:var(--muted);letter-spacing:.02em}
.nav-contacts{display:flex;align-items:center;gap:18px;font-size:14.5px}
.nav-contacts a{color:var(--ink-soft);font-weight:500;display:inline-flex;align-items:center;gap:6px}
.nav-phone{font-family:var(--display);font-weight:600;color:var(--navy)!important}
.nav-toggle{display:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--display);font-weight:600;font-size:15px;padding:14px 24px;border-radius:999px;border:0;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;line-height:1}
.btn-primary{background:linear-gradient(180deg,var(--sunrise),var(--sunrise-deep));color:#fff;box-shadow:0 8px 22px rgba(231,82,42,.32)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(231,82,42,.4)}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--line-2)}
.btn-ghost:hover{color:var(--navy);border-color:var(--azure);transform:translateY(-2px)}
.btn-lg{padding:17px 30px;font-size:16px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#0a2540 0%,#103a5e 55%,#155e8e 100%);color:#eaf3fb;padding:72px 0 84px}
.hero::after{content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='600'%3E%3Cg fill='none' stroke='%237fc4e8' stroke-opacity='0.12' stroke-width='1.5'%3E%3Cpath d='M0 480 C200 420 380 520 600 470 C820 420 1000 510 1200 460'/%3E%3Cpath d='M0 520 C200 470 380 560 600 510 C820 460 1000 550 1200 500'/%3E%3Cpath d='M0 560 C220 520 400 590 620 555 C840 520 1010 585 1200 545'/%3E%3Cpath d='M0 430 C220 360 400 470 640 410 C860 355 1020 450 1200 400'/%3E%3Cpath d='M0 380 C240 300 420 420 660 360 C880 305 1040 400 1200 350'/%3E%3C/g%3E%3C/svg%3E");
  background-size:cover;background-position:bottom}
.hero .wrap{position:relative;z-index:1}
.hero h1{color:#fff;max-width:14ch}
.hero .lead{color:#bcd6ec;max-width:54ch}
.hero .eyebrow{color:var(--glacier)}

/* ---------- Filter (homepage) ---------- */
.finder{background:var(--paper);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:22px;margin-top:34px;border:1px solid rgba(255,255,255,.5)}
.finder-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:6px;letter-spacing:.02em}
.field select,.field input{width:100%;padding:13px 14px;border:1.5px solid var(--line-2);border-radius:var(--radius-sm);font:inherit;font-size:15px;color:var(--ink);background:#fff;appearance:none}
.field select:focus,.field input:focus{outline:none;border-color:var(--azure)}
.finder .btn{width:100%;justify-content:center;margin-top:16px}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.card-link:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-pad{padding:24px}
.card .thumb{aspect-ratio:16/10;background:linear-gradient(150deg,#cfe3f2,#9cc6e6);position:relative;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .tag{position:absolute;top:12px;left:12px;background:rgba(10,37,64,.78);color:#fff;font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;letter-spacing:.02em}
.card .tag.soon{background:rgba(106,120,136,.85)}
.card h3{margin-bottom:6px}
.card .meta{font-size:13.5px;color:var(--muted)}
.disabled{opacity:.6;pointer-events:none}

.disc-card{display:block;padding:26px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s,border-color .18s}
.disc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--glacier)}
.disc-card .ico{width:46px;height:46px;margin-bottom:14px}
.disc-card h3{color:var(--navy)}
.disc-card .arrow{font-family:var(--display);font-weight:600;color:var(--azure-deep);font-size:14.5px;margin-top:10px;display:inline-block}

/* ---------- Price table ---------- */
.price-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--line);background:#fff}
table.price{border-collapse:collapse;width:100%;min-width:520px;font-size:15.5px}
table.price th,table.price td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
table.price thead th{background:var(--navy);color:#fff;font-family:var(--display);font-weight:600;font-size:14px;letter-spacing:.01em}
table.price tbody tr:last-child td{border-bottom:0}
table.price tbody tr:nth-child(even){background:var(--snow)}
table.price td.price-val{font-family:var(--display);font-weight:600;color:var(--navy);white-space:nowrap}
.price-note{font-size:13.5px;color:var(--muted);margin-top:12px}
table.price td.price-promo{font-family:var(--display);font-weight:600;color:var(--sunrise-deep);white-space:nowrap}

/* starter / promo callout */
.starter{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:linear-gradient(135deg,#fff,#fff6f2);border:1.5px solid rgba(231,82,42,.3);
  border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);margin:0 0 22px}
.starter .s-text{flex:1;min-width:240px}
.starter b{font-family:var(--display);font-weight:800;font-size:clamp(20px,3vw,26px);color:var(--navy);display:block;line-height:1.1}
.starter .s-sub{font-size:14.5px;color:var(--ink-soft);margin:8px 0 0}
.starter .s-tag{display:inline-block;font-family:var(--display);font-weight:600;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--sunrise-deep);background:rgba(231,82,42,.1);padding:4px 11px;border-radius:999px;margin-bottom:10px}
@media(max-width:560px){.starter .btn{width:100%;justify-content:center}}

/* ---------- Prose blocks ---------- */
.prose h2{margin-top:46px}
.prose h3{margin-top:30px}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.25em}
.prose li{margin-bottom:.5em}
.prose strong{color:var(--navy)}

/* feature list with checks */
.checks{list-style:none;padding:0;margin:0 0 1em}
.checks li{position:relative;padding-left:32px;margin-bottom:12px}
.checks li::before{content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;
  background:var(--good) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat}

/* ---------- FAQ ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;box-shadow:var(--shadow-sm);overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-family:var(--display);font-weight:600;font-size:16.5px;color:var(--navy);list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:24px;color:var(--azure);transition:transform .2s;line-height:1}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>div{padding:0 22px 20px;color:var(--ink-soft)}
.faq details>div>*:last-child{margin-bottom:0}

/* ---------- Instructors ---------- */
.inst-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.inst{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s}
.inst:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.inst .ph{aspect-ratio:3/4;background:linear-gradient(150deg,#cfe3f2,#9cc6e6);display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--display);font-size:40px}
.inst .ph img{width:100%;height:100%;object-fit:cover}
.inst-pad{padding:16px 18px}
.inst-pad h3{font-size:18px;margin-bottom:2px}
.inst .role{font-size:13.5px;color:var(--azure-deep);font-weight:600;margin-bottom:8px}
.inst .bio{font-size:14px;color:var(--ink-soft);margin:0}

/* ---------- Review ---------- */
.rev{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.rev .stars{color:var(--sunrise);font-size:16px;letter-spacing:2px;margin-bottom:8px}
.rev p{font-size:15.5px;margin-bottom:10px}
.rev .who{font-weight:600;color:var(--navy);font-size:14.5px}
.rev .when{color:var(--muted);font-size:13px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(160deg,#0a2540,#155e8e);color:#fff;border-radius:var(--radius);padding:44px;text-align:center;box-shadow:var(--shadow)}
.cta-band h2{color:#fff}
.cta-band p{color:#bcd6ec;max-width:48ch;margin-left:auto;margin-right:auto}

/* ---------- breadcrumbs ---------- */
.crumbs{font-size:13.5px;color:var(--muted);padding:16px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--azure-deep)}
.crumbs span{color:var(--ink)}

/* ---------- TL;DR answer box (AEO) ---------- */
.answer{background:#fff;border:1px solid var(--line);border-left:4px solid var(--sunrise);border-radius:var(--radius-sm);padding:20px 22px;box-shadow:var(--shadow-sm);margin:0 0 8px}
.answer p{margin:0;font-size:17.5px}
.updated{font-size:13px;color:var(--muted);margin:10px 0 0}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#aebfd0;padding:48px 0 28px;margin-top:64px}
.site-footer a{color:#cfe0f0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:32px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:9px;font-size:14.5px}
.foot-brand b{font-family:var(--display);color:#fff;font-size:20px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;font-size:13px;color:#8aa0b6;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- Stat row ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{text-align:center}
.stat b{display:block;font-family:var(--display);font-weight:800;font-size:clamp(26px,4vw,38px);color:var(--navy);line-height:1}
.stat span{font-size:13.5px;color:var(--muted)}

/* ---------- Responsive ---------- */
@media(max-width:860px){
  .grid-3,.inst-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:24px}
}
@media(max-width:680px){
  body{font-size:16px}
  .section{padding:48px 0}
  .nav-contacts{display:none}
  .nav-toggle{display:inline-flex;align-items:center;gap:7px;font-family:var(--display);font-weight:600;font-size:14px;color:#fff;background:var(--sunrise);padding:9px 16px;border-radius:999px}
  .finder-row{grid-template-columns:1fr}
  .grid-3,.grid-2,.inst-grid{grid-template-columns:1fr}
  .cta-band,.cta-band{padding:30px 22px}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:52px 0 60px}
}