/* obrazovanie365.ru — custom «school-portal» дизайн, палитра ink #1d2b3a + accent #2f80ed + warm #f6b21b */
*{box-sizing:border-box}
:root{--ink:#1d2b3a;--accent:#2f80ed;--accent-d:#1e63c4;--warm:#f6b21b;--bg:#f4f7fb;--card:#fff;--line:#e2e8f2;--muted:#5b6b7e}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,"PT Sans","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
img{max-width:100%;height:auto}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.o365-wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.o365-skip{position:absolute;left:-9999px}
.o365-skip:focus{left:12px;top:12px;background:#fff;padding:8px 14px;z-index:100;border-radius:6px}

/* header */
.o365-header{background:var(--ink);position:sticky;top:0;z-index:50}
.o365-header-inner{display:flex;align-items:center;gap:20px;min-height:64px}
.o365-logo{display:flex;align-items:center;gap:12px;color:#fff}
.o365-logo:hover{text-decoration:none}
.o365-logo-mark{background:var(--warm);color:var(--ink);font-weight:800;font-size:20px;border-radius:9px;padding:6px 10px;line-height:1}
.o365-logo-text{font-weight:700;font-size:16px;line-height:1.15}
.o365-logo-text small{font-weight:400;font-size:11px;color:#a8bad0}
.o365-nav{margin-left:auto;display:flex;gap:20px;flex-wrap:wrap}
.o365-nav a{color:#d6e2f2;font-size:14.5px}
.o365-nav a:hover{color:#fff;text-decoration:none}
.o365-burger{display:none;margin-left:auto;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.o365-burger span{width:24px;height:2px;background:#fff;display:block}

/* main */
.o365-main{padding:26px 20px 40px;min-height:50vh}
.o365-crumbs{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.o365-crumbs span{margin:0 4px}
.o365-crumbs-cur{color:var(--ink)}

/* article */
.o365-article h1{font-size:30px;line-height:1.25;margin:.2em 0 .3em}
.o365-meta{font-size:14px;color:var(--muted);margin:0 0 22px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.o365-content{font-size:17.5px}
.o365-content h2{font-size:23px;margin:1.4em 0 .5em}
.o365-content h3{font-size:19px;margin:1.2em 0 .4em}
.o365-content p{margin:0 0 1em}
.o365-content ul,.o365-content ol{margin:0 0 1em;padding-left:1.4em}
.o365-content li{margin:.3em 0}
.o365-content img{border-radius:8px;margin:.6em 0}
.o365-content blockquote{border-left:4px solid var(--accent);margin:1em 0;padding:.4em 1em;background:#eef4fd;border-radius:0 8px 8px 0;color:#28405a}
.o365-content a{border-bottom:1px solid #bcd4f5}

.o365-related{margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.o365-related h2{font-size:20px;margin:0 0 .6em}
.o365-related ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:8px 24px}
.o365-related li{margin:0}

/* hero */
.o365-hero{background:linear-gradient(135deg,#1d2b3a,#28517e);color:#fff;border-radius:16px;padding:44px 40px;margin-bottom:34px}
.o365-hero h1{font-size:34px;margin:0 0 .4em;line-height:1.2}
.o365-hero p{font-size:18px;color:#dbe7f5;max-width:680px;margin:0 0 1.4em}
.o365-hero-btns{display:flex;gap:12px;flex-wrap:wrap}

/* buttons */
.o365-btn{display:inline-block;background:var(--warm);color:var(--ink);font-weight:700;padding:12px 22px;border-radius:9px;transition:transform .15s,background .15s}
.o365-btn:hover{background:#ffc53d;transform:translateY(-1px);text-decoration:none}
.o365-btn-ghost{background:transparent;color:#fff;border:2px solid #7ea7d6}
.o365-btn-ghost:hover{background:#fff;color:var(--ink)}

/* sections + cards */
.o365-sections,.o365-recent{margin-bottom:38px}
.o365-sections h2,.o365-recent h2,.o365-listing h1{font-size:26px;margin:0 0 .7em}
.o365-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.o365-card{display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;color:var(--ink);transition:box-shadow .15s,transform .15s,border-color .15s}
.o365-card:hover{box-shadow:0 8px 24px rgba(29,43,58,.1);transform:translateY(-2px);border-color:#c3d6ef;text-decoration:none}
.o365-card-tag{font-size:12px;color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:.02em}
.o365-card-title{font-weight:700;font-size:16.5px;line-height:1.3}
.o365-card-snip{font-size:13.5px;color:var(--muted)}
.o365-card-sec{background:#eef4fd;border-color:#d3e3fa}
.o365-card-sec .o365-card-title{color:var(--accent-d)}

.o365-listing .o365-lead{color:var(--muted);max-width:720px;margin:0 0 1.6em}

/* CTA растения */
.o365-cta{margin:20px auto 40px}
.o365-cta-box{background:linear-gradient(135deg,#1f7a43,#2fb36a);color:#fff;border-radius:16px;padding:34px 36px}
.o365-cta-box h2{margin:0 0 .4em;font-size:24px}
.o365-cta-box p{color:#e4f6ec;max-width:720px;margin:0 0 1.3em}
.o365-cta-box .o365-btn{background:#fff;color:#1f7a43}
.o365-cta-box .o365-btn:hover{background:#eafff2}

/* footer */
.o365-footer{background:var(--ink);color:#c3d1e0;margin-top:20px}
.o365-footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;padding:38px 20px 26px}
.o365-foot-col a{display:block;color:#c3d1e0;font-size:14.5px;margin:.3em 0}
.o365-foot-col a:hover{color:#fff}
.o365-foot-brand{font-weight:800;font-size:18px;color:#fff;margin:0 0 .5em}
.o365-foot-h{font-weight:700;color:#fff;margin:0 0 .5em}
.o365-foot-bottom{border-top:1px solid #2c4055;padding:16px 20px;font-size:13px;color:#8ea3ba}

@media (max-width:820px){
  .o365-nav{display:none;order:3;flex-basis:100%;flex-direction:column;gap:0;margin:0}
  body.o365-nav-open .o365-nav{display:flex}
  body.o365-nav-open .o365-nav a{padding:10px 0;border-top:1px solid #2c4055}
  .o365-burger{display:flex}
  .o365-footer-inner{grid-template-columns:1fr;gap:22px}
  .o365-hero{padding:32px 24px}
  .o365-hero h1{font-size:27px}
  .o365-article h1{font-size:25px}
}

/* иллюстрации */
.o365-illustration{margin:0 0 1.4em}
.o365-illustration img{width:100%;border-radius:12px;display:block}
.o365-author-photo{float:right;width:190px;border-radius:12px;margin:0 0 16px 22px}
@media (max-width:600px){.o365-author-photo{float:none;width:100%;margin:0 0 16px}}