*{box-sizing:border-box}body{margin:0;background:#f4f8fc;color:#09254a;font-family:Inter,Arial,sans-serif}button,input,select{font:inherit}header{height:72px;background:#fff;border-bottom:1px solid #e3ebf4;display:flex;align-items:center;padding:10px max(24px,calc((100% - 1120px)/2));gap:10px;position:sticky;top:0;z-index:3}header .brand{display:flex;align-items:center;min-width:0}.full-logo{width:290px;height:54px;object-fit:contain;object-position:left center;display:block}.langs{margin-left:auto;display:flex;gap:4px}.langs button{border:0;background:#edf3f8;border-radius:8px;padding:7px 9px}.langs .on{background:#0a69e8;color:white}main{max-width:980px;margin:auto;padding:28px 20px 100px}.hero{text-align:center;max-width:650px;margin:35px auto}.hero h1{font-size:30px}.roles{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px}.roles button{height:104px;background:#fff;border:1px solid #d9e5f1;border-radius:20px;color:#09254a}.roles i{display:block;font-style:normal;font-size:28px;margin-bottom:9px}.auth{max-width:430px;margin:30px auto;background:#fff;padding:30px;border-radius:24px;box-shadow:0 10px 40px #17395b12}.auth input,.auth select,.profile select{width:100%;padding:14px;margin:7px 0;border:1px solid #d6e1ec;border-radius:12px;background:#fff}.primary{width:100%;border:0;background:linear-gradient(135deg,#076ef0,#0cc69c);color:#fff;padding:14px;border-radius:13px;font-weight:800;margin-top:10px}.link{border:0;background:none;color:#55708d;padding:14px}.auth small{display:block;color:#8796a8;margin-top:12px}.welcome{display:flex;justify-content:space-between;align-items:center}.welcome h1{margin:3px 0}.avatar,.bigavatar{border:0;background:linear-gradient(135deg,#0877f2,#13c897);color:#fff;font-weight:800}.avatar{width:48px;height:48px;border-radius:50%}.continue{margin:24px 0;padding:24px;border-radius:24px;background:linear-gradient(135deg,#082d63,#0871e9);color:#fff}.continue h2{margin:7px 0 16px}.continue button{background:#fff;color:#0b4e9e;border:0;padding:10px 16px;border-radius:10px;font-weight:800}.bar{height:7px;background:#ffffff33;border-radius:8px;margin-bottom:16px}.bar i{display:block;height:100%;background:#38e09c;border-radius:8px}.subjects{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.subject{min-height:105px;text-align:left;padding:16px;border:1px solid #dfe9f3;background:#fff;border-radius:18px;color:#09254a}.subject span{font-size:24px;display:block}.subject b,.subject small{display:block;margin-top:6px}.subject small{color:#7b8da1}.quick{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.quick button,.examcards button{padding:20px;text-align:left;border:0;border-radius:18px;background:#e9f3ff;color:#09254a}.quick small,.examcards small{display:block;margin-top:5px;color:#6f8297}nav{position:fixed;bottom:0;left:0;right:0;height:72px;background:#fff;border-top:1px solid #dfe7ef;display:flex;justify-content:center;z-index:4}nav button{width:min(19%,150px);border:0;background:none;color:#8090a2}nav i,nav span{display:block;font-style:normal}nav i{font-size:20px}nav span{font-size:11px;margin-top:5px}nav .on{color:#0873ed;font-weight:800}.page{max-width:760px;margin:auto}.back{border:0;background:#e7f0f8;border-radius:10px;padding:9px 12px}.lessonlist{display:grid;gap:10px}.lessonlist button{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid #e0e8f0;background:#fff;border-radius:14px;color:#09254a}.lessonlist span{background:#e8f3ff;width:32px;height:32px;padding:7px;border-radius:9px}.lessonlist em{margin-left:auto}.tag{background:#e8f4ff;padding:7px 10px;border-radius:20px;font-size:12px}.lesson{background:#fff;padding:26px;border-radius:20px}.lesson p{line-height:1.65}.example{background:#f1f8ff;border-left:4px solid #0b79ed;padding:14px;margin:18px 0}.orb{width:64px;height:64px;border-radius:20px;background:linear-gradient(135deg,#0a6ff0,#19d093);display:grid;place-items:center;color:#fff;font-size:28px}.chat{min-height:180px;background:#fff;border-radius:18px;padding:18px;margin:20px 0}.chat div{display:inline-block;background:#e9f3ff;padding:12px;border-radius:14px}.ask{display:flex;gap:8px}.ask input{flex:1;padding:14px;border:1px solid #dbe5ee;border-radius:12px}.ask button{width:52px;border:0;border-radius:12px;background:#0875ef;color:#fff}.examcards{display:grid;gap:12px}.profile{text-align:center;max-width:400px;margin:auto}.bigavatar{width:90px;height:90px;border-radius:28px;display:grid;place-items:center;font-size:38px;margin:auto}.profile label{display:block;text-align:left;margin:25px 0}.danger{border:1px solid #f1c6c6;background:#fff;color:#b52c2c;padding:12px;border-radius:12px}@media(max-width:650px){header{height:66px;padding:8px 14px}.full-logo{width:215px;height:46px}.subjects{grid-template-columns:repeat(2,1fr)}main{padding:18px 14px 90px}.roles{gap:10px}.continue{padding:20px}.hero{margin-top:10px}}
/* v2.2 photorealistic role selector */
.role-hero{max-width:1180px;margin:24px auto}.role-hero h1{font-size:clamp(34px,4vw,56px);margin-bottom:6px}.role-sub{font-size:18px;margin:0 0 8px}.photo-roles{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}.photo-role{height:auto!important;aspect-ratio:475/324;background-size:cover!important;background-position:center!important;border:0!important;border-radius:24px!important;box-shadow:0 10px 30px #15395d1b;transition:transform .18s ease,box-shadow .18s ease;overflow:hidden}.photo-role:hover{transform:translateY(-3px);box-shadow:0 16px 36px #15395d2b}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:820px){.photo-roles{grid-template-columns:repeat(2,1fr)}.role-sub{font-size:16px}}@media(max-width:520px){.photo-roles{grid-template-columns:1fr;gap:12px}.photo-role{border-radius:20px!important}.role-hero h1{font-size:30px}.role-sub{font-size:14px}.full-logo{width:200px}}
/* v2.3 mobile-first setup polish */
.auth:before{content:'ZİRƏK ID';display:inline-block;background:#eaf4ff;color:#0873ed;font-weight:800;padding:7px 11px;border-radius:999px;font-size:12px}.auth h1{margin-bottom:6px}.auth p{color:#61758b;margin-top:0}.auth input:focus,.auth select:focus{outline:2px solid #9ccaff;border-color:#2b83ed}@media(min-width:900px){main{max-width:1220px}.dash{max-width:980px;margin:auto}.page{max-width:800px}.role-hero{max-width:1120px}}
@media(max-width:520px){header{position:sticky}.langs button{padding:6px 7px}.full-logo{width:170px}.auth{margin:8px auto;padding:22px 18px;border-radius:20px}.photo-roles{grid-template-columns:1fr 1fr}.photo-role{border-radius:16px!important}.role-hero h1{font-size:28px}.role-sub{display:none}}
.grade-strip{display:flex;gap:8px;overflow:auto;padding:4px 0 18px}.grade-strip button{min-width:44px;height:44px;border:1px solid #dbe6f0;background:#fff;border-radius:12px;color:#09254a;font-weight:800}.grade-strip .active{background:#0873ed;color:#fff;border-color:#0873ed}
/* v2.5.1 public landing */
.full-logo{width:180px!important;height:auto!important;max-height:58px!important;object-fit:contain}
.public-home{max-width:1180px;margin:0 auto;padding:54px 24px 90px}.public-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center;padding:46px;border-radius:32px;background:linear-gradient(135deg,#eef7ff,#f1fffb);border:1px solid #dbeaf6}.public-hero h1{font-size:clamp(38px,5vw,68px);line-height:1.02;margin:12px 0 18px;color:#092b50}.public-hero p{font-size:19px;line-height:1.55;color:#526b82;max-width:680px}.eyebrow{font-weight:800;color:#0876e8;letter-spacing:.03em}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-actions button{border:0;border-radius:14px;padding:15px 22px;font-weight:800;font-size:16px;cursor:pointer}.hero-actions .start{background:linear-gradient(90deg,#0878ef,#12bea7);color:white}.hero-actions .enter{background:white;color:#123b61;border:1px solid #cfe0ee}.hero-mark{background:white;border-radius:28px;min-height:300px;display:flex;align-items:center;justify-content:center;box-shadow:0 18px 50px #2b66831a}.hero-mark img{width:min(82%,360px);height:auto}.public-sections{padding-top:42px}.public-sections h2{font-size:30px;color:#102f4d;margin-bottom:20px}.public-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.public-card{background:white;border:1px solid #dce8f1;border-radius:20px;padding:22px;text-align:left;box-shadow:0 8px 24px #174c6d0a}.public-card b{display:block;font-size:18px;color:#143b5d;margin:10px 0 6px}.public-card span{font-size:28px}.public-card small{color:#71879a;font-size:14px;line-height:1.4}.role-back{margin:0 0 20px;border:0;background:transparent;color:#37617f;font-weight:700;cursor:pointer}
@media(max-width:760px){.full-logo{width:150px!important}.public-home{padding:24px 14px 80px}.public-hero{grid-template-columns:1fr;padding:26px 20px}.hero-mark{min-height:190px}.public-grid{grid-template-columns:1fr 1fr}.public-hero h1{font-size:40px}}
@media(max-width:440px){.public-grid{grid-template-columns:1fr}.hero-actions button{width:100%}}
/* v2.6 expanded ZIREK ecosystem */
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.section-head h2{margin:4px 0 0}.section-kicker{font-size:12px;font-weight:900;letter-spacing:.14em;color:#0b79e9}.feature-count{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;background:#0a2e59;color:#fff;font-weight:900}.rich-grid{grid-template-columns:repeat(3,1fr)}.rich-card{position:relative;min-height:190px;border:0!important;padding:24px!important;cursor:pointer;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}.rich-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px #173e6420}.rich-card:after{content:'';position:absolute;width:120px;height:120px;border-radius:50%;right:-45px;bottom:-55px;background:#fff6}.card-top{display:flex;align-items:center;justify-content:space-between}.feature-icon{width:52px;height:52px;border-radius:16px;background:#fff;display:grid;place-items:center;font-size:28px!important;box-shadow:0 8px 22px #183b5d12}.card-arrow{font-size:20px!important;width:34px;height:34px;border-radius:50%;background:#ffffffb8;display:grid;place-items:center}.rich-card b{font-size:20px!important;margin-top:22px!important}.rich-card small{font-size:14px!important;line-height:1.5!important;max-width:92%;display:block}.rich-card i{position:absolute;right:18px;bottom:12px;font-style:normal;font-weight:900;font-size:12px;opacity:.28}.c0{background:linear-gradient(145deg,#fff0f4,#ffe3ed)}.c1{background:linear-gradient(145deg,#eaf5ff,#ddecff)}.c2{background:linear-gradient(145deg,#fff7df,#ffedb9)}.c3{background:linear-gradient(145deg,#edf0ff,#e0e5ff)}.c4{background:linear-gradient(145deg,#e9fff6,#d7f8e9)}.c5{background:linear-gradient(145deg,#f5edff,#eadcff)}
@media(max-width:860px){.rich-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:520px){.rich-grid{grid-template-columns:1fr}.rich-card{min-height:165px}.public-sections{padding-top:30px}}