/* Российско-Китайская Ассоциация — статический сайт. Дизайн: чистый, светлый, синие акценты + сдержанный красный. */
:root{
  --blue:#1e4e8c; --blue-2:#2f6fb3; --blue-ink:#12325b;
  --red:#c8322d;
  --ink:#0f1a2b; --muted:#5b6b80; --line:#e5e9f0;
  --bg:#ffffff; --bg-alt:#f5f7fa; --bg-dark:#0f2440;
  --radius:14px; --maxw:1120px;
  --shadow:0 6px 24px rgba(16,42,80,.08);
  --font:'Segoe UI',system-ui,-apple-system,'Noto Sans','Noto Sans SC','PingFang SC','Microsoft YaHei',Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;color:var(--ink);margin:0 0 .4em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--blue);color:#fff;padding:10px 16px;z-index:100}
.skip-link:focus{left:12px;top:12px}

/* Buttons */
.btn{display:inline-block;padding:13px 24px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-ink);color:#fff}
.btn-ghost{background:transparent;color:var(--blue);border-color:var(--blue)}
.btn-ghost:hover{background:rgba(30,78,140,.06);color:var(--blue)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-logo{border-radius:8px}
.brand-text{display:flex;flex-direction:column}
.brand-name{font-weight:700;font-size:16px;letter-spacing:.1px}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.3px;text-transform:uppercase}
.site-nav{display:flex;gap:22px;margin-left:auto}
.site-nav a{color:var(--ink);font-size:14.5px;font-weight:500;padding:6px 0;border-bottom:2px solid transparent}
.site-nav a:hover{color:var(--blue);border-color:var(--blue);text-decoration:none}
.header-actions{display:flex;align-items:center;gap:12px}
.lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang-switch button{border:0;background:#fff;color:var(--muted);font-weight:600;font-size:13px;padding:7px 11px;cursor:pointer}
.lang-switch button.is-active{background:var(--blue);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:4px;width:40px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{width:20px;height:2px;background:var(--ink)}

/* Hero */
.hero{position:relative;color:#fff;background:linear-gradient(135deg,#12325b 0%,#1e4e8c 55%,#2f6fb3 100%);overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(200,50,45,.55),rgba(200,50,45,0) 70%)}
.hero-inner{position:relative;padding:88px 24px 76px;max-width:900px}
.hero-eyebrow{text-transform:uppercase;letter-spacing:3px;font-size:13px;font-weight:600;color:#bcd2ee;margin:0 0 14px}
.hero-title{font-size:clamp(30px,5vw,48px);font-weight:800;color:#fff;margin:0 0 18px}
.hero-lead{font-size:clamp(16px,2.2vw,19px);color:#dbe6f4;max-width:720px;margin:0 0 30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-facts{display:flex;flex-wrap:wrap;gap:36px;margin:52px 0 0;padding:0;border-top:1px solid rgba(255,255,255,.18)}
.hero-facts div{padding-top:22px}
.hero-facts dt{font-size:30px;font-weight:800;color:#fff;margin:0}
.hero-facts dd{margin:4px 0 0;font-size:13.5px;color:#c3d3e8;max-width:210px}

/* Sections */
.section{padding:74px 0}
.section-alt{background:var(--bg-alt)}
.section-eyebrow{text-transform:uppercase;letter-spacing:2.5px;font-size:12.5px;font-weight:700;color:var(--red);margin:0 0 8px}
.section-title{font-size:clamp(24px,3.4vw,34px);font-weight:800;margin:0 0 34px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px}
.about-lead{font-size:19px;font-weight:600;color:var(--blue-ink);margin:0}

/* Cards */
.cards{display:grid;gap:22px}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.section-alt .card{box-shadow:none}
.card-flat{box-shadow:none}
.card h3{font-size:18px;margin:0 0 8px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card-ico{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;font-size:22px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:16px}

/* Focus list */
.focus{margin-top:34px;padding:24px 28px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius)}
.section-alt .focus{background:var(--bg-alt)}
.focus-label{margin:0 0 12px;font-weight:600;color:var(--ink)}
.focus-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:12px}
.focus-list li{padding:8px 16px;border:1px solid var(--line);border-radius:999px;font-weight:600;color:var(--blue-ink);background:#fff}

/* Timeline */
.timeline{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:tl}
.tl-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 24px;box-shadow:var(--shadow);counter-increment:tl}
.tl-item::before{content:counter(tl);position:absolute;top:-14px;left:24px;width:32px;height:32px;border-radius:50%;background:var(--red);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.tl-when{display:inline-block;margin:6px 0 10px;font-size:12.5px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--blue-2)}
.tl-item h3{font-size:18px;margin:0 0 6px}
.tl-item p{margin:0;color:var(--muted);font-size:14.5px}

/* CTA band */
.cta-band{background:var(--bg-dark);color:#fff;padding:66px 0}
.cta-inner{text-align:center;max-width:720px}
.cta-inner h2{color:#fff;font-size:clamp(24px,3.4vw,32px);margin:0 0 12px}
.cta-inner p{color:#c3d3e8;font-size:17px;margin:0 0 26px}
.cta-inner .hero-actions{justify-content:center}

/* Contacts */
.contacts-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px}
.contacts-grid h3{font-size:15px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:22px 0 4px}
.contacts-grid h3:first-child{margin-top:0}
.contacts-grid p{margin:0 0 4px}
.contacts-note{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.contacts-note p{margin:0 0 18px;color:var(--ink)}

/* Join form */
.join-intro{max-width:720px;color:var(--muted);margin:0 0 30px;font-size:16px}
.join-form{display:grid;grid-template-columns:1fr 1fr;gap:18px 22px;max-width:820px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.field{display:flex;flex-direction:column;gap:6px}
.field-wide{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{font:inherit;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:9px;padding:11px 13px;transition:border-color .15s,box-shadow .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue-2);box-shadow:0 0 0 3px rgba(47,111,179,.15)}
.field textarea{resize:vertical;min-height:96px}
.field input:invalid:not(:placeholder-shown){border-color:var(--red)}
.consent label{display:flex;gap:10px;align-items:flex-start;font-weight:400;color:var(--muted);font-size:13.5px;line-height:1.5}
.consent input{margin-top:3px;width:16px;height:16px;flex:0 0 auto}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-hint{margin:0;color:var(--blue-2);font-size:14px;font-weight:600}

/* Footer */
.site-footer{background:#0b1c33;color:#c3d3e8;padding:44px 0}
.footer-inner{display:flex;flex-direction:column;gap:14px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:700}
.footer-legal{margin:0;font-size:13.5px;color:#93a6c0;max-width:820px}
.footer-copy{margin:0;font-size:13px;color:#7d90ab}

/* Responsive */
@media (max-width:900px){
  .about-grid,.contacts-grid{grid-template-columns:1fr}
  .cards-3,.timeline{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .site-nav{position:fixed;inset:68px 0 auto 0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 24px 16px;box-shadow:var(--shadow);display:none}
  .site-nav.open{display:flex}
  .site-nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
  .cards-3,.timeline{grid-template-columns:1fr}
  .header-actions .btn{display:none}
  .hero-facts{gap:24px}
}