/* =========================================================================
   Открытый банк задач (/zadaniya/) — оформление 2026-11: светлое, как новая главная
   ========================================================================= */
body.zd2{background:#F7F8FA;color:#2A2E38;font-family:'Onest',system-ui,sans-serif;-webkit-font-smoothing:antialiased}
.zd2 *{box-sizing:border-box}
.zw{max-width:1200px;margin:0 auto;padding:0 20px}

/* шапка */
.zn{position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(16px) saturate(1.3);backdrop-filter:blur(16px) saturate(1.3);border-bottom:1px solid rgba(15,18,30,.07)}
.zn-in{height:64px;display:flex;align-items:center;gap:24px}
.zn-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#0C0E14;font-weight:700;font-size:19px;letter-spacing:-.02em}
.zn-logo img{border-radius:9px}
.zn-links{display:flex;gap:26px;margin:0 auto}
.zn-links a{color:#565B66;text-decoration:none;font-size:14.5px;font-weight:500}
.zn-links a:hover{color:#0C0E14}
.zn-short{display:none}
@media (max-width:860px){.zn-links{display:none}.zn-in{justify-content:space-between}}
@media (max-width:420px){.zn-long{display:none}.zn-short{display:inline}}

/* кнопки */
.zb{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:14px;font-weight:600;font-size:15.5px;text-decoration:none;white-space:nowrap;transition:transform .15s,box-shadow .15s,background .15s}
.zb:hover{transform:translateY(-1px)}
.zb-sm{height:40px;padding:0 16px;font-size:14.5px;border-radius:12px}
.zb-pri{background:#4B55E8;color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 12px 26px -12px rgba(75,85,232,.75)}
.zb-pri:hover{background:#3D46D6}
.zb-ghost{background:#fff;color:#0C0E14;box-shadow:0 0 0 1px rgba(15,18,30,.12) inset}
.zb-ghost:hover{background:#F3F4F8}
.zb-white{background:#fff;color:#3D46D6;box-shadow:0 10px 24px -12px rgba(0,0,0,.35)}
.zb-glass{background:rgba(255,255,255,.12);color:#fff;box-shadow:0 0 0 1px rgba(255,255,255,.28) inset}
.zb-wide{width:100%}

/* первый экран */
.zh{padding:104px 0 56px;background:radial-gradient(900px 420px at 85% 10%,rgba(75,85,232,.10),transparent 70%),radial-gradient(700px 380px at 0% 0%,rgba(122,53,200,.07),transparent 70%),#F7F8FA;border-bottom:1px solid rgba(15,18,30,.06)}
.zh-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:56px;align-items:center}
.zd-crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:#8A8F99}
.zd-crumbs a{color:#565B66;text-decoration:none}
.zd-crumbs a:hover{color:#4B55E8}
.zd-crumbs b{color:#0C0E14;font-weight:600}
.zh-eyebrow{display:inline-flex;margin-top:22px;padding:6px 12px;border-radius:999px;background:#EEF0FF;color:#3D46D6;font-size:13px;font-weight:600}
.zh-eyebrow-w{background:rgba(255,255,255,.16);color:#fff;margin-top:0}
.zh-h1{margin:16px 0 0;font-size:clamp(32px,4.4vw,54px);line-height:1.04;letter-spacing:-.035em;font-weight:700;color:#0C0E14}
.zh-h1 span{display:block;margin-top:12px;font-size:clamp(18px,1.9vw,23px);line-height:1.35;letter-spacing:-.01em;font-weight:500;color:#565B66}
.zh-lead{margin:18px 0 0;max-width:600px;font-size:17px;line-height:1.6;color:#565B66}
.zh-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.zh-stats div{padding:12px 16px;border-radius:16px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.07),0 8px 20px -14px rgba(15,18,30,.25)}
.zh-stats b{display:block;font-size:20px;font-weight:700;letter-spacing:-.02em;color:#0C0E14}
.zh-stats span{font-size:13px;color:#8A8F99}
.zh-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* мини-доска (живая картинка) */
.zdemo{position:relative;border-radius:22px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.07),0 40px 80px -36px rgba(30,36,120,.45);overflow:hidden;transform:perspective(1400px) rotateY(-6deg) rotateX(2deg)}
.zdemo-top{display:flex;align-items:center;gap:10px;height:46px;padding:0 16px;border-bottom:1px solid rgba(15,18,30,.07);font-size:13px;color:#0C0E14;font-weight:600}
.zdemo-dot{width:22px;height:22px;border-radius:7px;background:url(/assets/logo-mark.svg?v=3) center/cover}
.zdemo-live{margin-left:auto;display:inline-flex;align-items:center;gap:6px;color:#12855a;font-weight:600;font-size:12px}
.zdemo-live i{width:7px;height:7px;border-radius:50%;background:#12A36B;box-shadow:0 0 0 0 rgba(18,163,107,.5);animation:zpulse 1.8s infinite}
.zdemo-body{position:relative;height:300px;background-color:#fff;background-image:linear-gradient(rgba(40,52,96,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(40,52,96,.07) 1px,transparent 1px);background-size:24px 24px}
.zdemo-rail{position:absolute;left:12px;top:16px;display:flex;flex-direction:column;gap:8px;padding:8px 6px;border-radius:14px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.08),0 6px 14px -8px rgba(15,18,30,.2)}
.zdemo-rail i{width:16px;height:16px;border-radius:50%;background:#E6E8F0}
.zdemo-rail i.on{background:#4B55E8}
.zdemo-card{position:absolute;left:58px;right:24px;top:18px;padding:12px 14px;border-radius:14px;background:#fff;box-shadow:0 0 0 1.5px #A5ABF5,0 14px 28px -18px rgba(75,85,232,.6)}
.zdemo-lbl{font-size:11px;font-weight:700;color:#4B55E8;letter-spacing:.02em;text-transform:uppercase}
.zdemo-txt{margin-top:4px;font-size:13.5px;line-height:1.5;color:#1f2430;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.zdemo-ink{position:absolute;left:70px;bottom:44px;width:62%;height:auto;overflow:visible}
.zdemo-ink path{fill:none;stroke:#3D46D6;stroke-width:4;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;animation:zink 6s ease-in-out infinite}
.zdemo-ok{position:absolute;right:22px;bottom:22px;padding:7px 12px;border-radius:12px;background:#E6FAF1;color:#12855a;font-size:13px;font-weight:700;opacity:0;animation:zok 6s ease-in-out infinite}
.zdemo-cur{position:absolute;left:62%;bottom:70px;display:flex;align-items:flex-start;gap:2px;animation:zcur 6s ease-in-out infinite}
.zdemo-cur span{margin-top:12px;padding:2px 7px;border-radius:7px;background:#12A36B;color:#fff;font-size:11px;font-weight:600}
@keyframes zink{0%,8%{stroke-dashoffset:1}55%,88%{stroke-dashoffset:0}100%{stroke-dashoffset:0;opacity:0}}
@keyframes zok{0%,56%{opacity:0;transform:translateY(6px)}64%,92%{opacity:1;transform:none}100%{opacity:0}}
@keyframes zcur{0%{transform:translate(-160px,10px)}55%{transform:translate(40px,-6px)}80%{transform:translate(70px,-30px)}100%{transform:translate(-160px,10px)}}
@keyframes zpulse{0%{box-shadow:0 0 0 0 rgba(18,163,107,.5)}70%{box-shadow:0 0 0 7px rgba(18,163,107,0)}100%{box-shadow:0 0 0 0 rgba(18,163,107,0)}}
@media (prefers-reduced-motion:reduce){.zdemo-ink path{animation:none;stroke-dashoffset:0}.zdemo-ok{animation:none;opacity:1}.zdemo-cur,.zdemo-live i{animation:none}}

/* список номеров */
.zsec{padding:56px 0 8px}
.zsec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px}
.zsec-head h2{margin:0;font-size:clamp(24px,2.6vw,32px);letter-spacing:-.025em;font-weight:700;color:#0C0E14}
.zsec-head span{color:#8A8F99;font-size:14px}
.ztiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.ztile{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:18px;background:#fff;text-decoration:none;box-shadow:0 0 0 1px rgba(15,18,30,.07),0 1px 2px rgba(15,18,30,.04);transition:box-shadow .18s,transform .18s}
.ztile:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(75,85,232,.35),0 16px 30px -18px rgba(75,85,232,.45)}
.ztile-n{flex:none;display:flex;align-items:baseline;justify-content:center;gap:1px;width:52px;height:52px;padding-top:12px;border-radius:15px;background:#EEF0FF;color:#3D46D6;font-size:21px;font-weight:700;letter-spacing:-.03em}
.ztile-n small{font-size:12px;font-weight:600;opacity:.7}
.ztile-t{min-width:0;flex:1}
.ztile-t b{display:block;font-size:15.5px;font-weight:600;color:#0C0E14;line-height:1.3}
.ztile-t small{display:block;margin-top:2px;font-size:13px;color:#8A8F99}
.ztile-go{color:#B3B7C2;font-size:18px;transition:color .15s,transform .15s}
.ztile:hover .ztile-go{color:#4B55E8;transform:translateX(3px)}
.ztiles-sm .ztile{padding:10px 12px}
.ztiles-sm .ztile-n{width:42px;height:42px;padding-top:9px;font-size:17px;border-radius:12px}

/* страница номера: задачи + колонка справа */
.zlay>*{min-width:0}
.zlay{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start;padding-top:36px}
.zsubs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:20px}
.zsubs span{font-size:13.5px;color:#8A8F99;margin-right:4px}
.zsubs em{font-style:normal;font-size:13px;font-weight:500;color:#2A2E38;padding:6px 12px;border-radius:999px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.09)}
.ztasks{display:flex;flex-direction:column;gap:16px}
.zt{padding:22px 24px;border-radius:22px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.07),0 18px 40px -30px rgba(15,18,30,.3);scroll-margin-top:90px}
.zt-head{display:flex;align-items:center;gap:10px;min-width:0}
.zt-n{flex:none;padding:5px 11px;border-radius:10px;background:#0C0E14;color:#fff;font-size:13px;font-weight:600}
.zt-sub{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13.5px;color:#8A8F99}
.zt-board{margin-left:auto;flex:none;font-size:13.5px;font-weight:600;color:#4B55E8;text-decoration:none;padding:7px 12px;border-radius:10px;background:#EEF0FF;opacity:.0;transition:opacity .15s}
.zt:hover .zt-board,.zt:focus-within .zt-board{opacity:1}
@media (hover:none){.zt-board{opacity:1}}
.zt-body{margin-top:14px}
.zt-has-fig .zt-body{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:24px;align-items:start}
.zd2 .zd-text{color:#1f2430;font-size:17px;line-height:1.7;overflow-x:auto}
.zd2 .zd-text table{border-collapse:collapse;margin:10px 0}
.zd2 .zd-text td,.zd2 .zd-text th{border:1px solid rgba(15,18,30,.14);padding:6px 10px}
.zd2 .zd-svg{margin:0;padding:12px;border-radius:16px;background:#F8F9FC!important;border:1px solid rgba(15,18,30,.06)!important;max-width:none;overflow:hidden;position:static!important;box-shadow:none!important;width:auto!important}
.zd2 .zt-fig svg{display:block;width:100%;height:auto;max-height:230px}
.zd2 .zt-fig svg [stroke="#d946ef"]{stroke:#8B5CF6}
.zd2 .zvar-fig{margin:14px 0 4px}
.zd2 .zvar-fig svg{max-height:460px;width:100%;height:auto}
.zt-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding-top:14px;border-top:1px dashed rgba(15,18,30,.1)}
.zt-det{flex:0 1 auto}
.zt-det[open]{flex:1 1 100%}
.zt-det summary{display:inline-flex;align-items:center;gap:6px;cursor:pointer;list-style:none;height:36px;padding:0 14px;border-radius:11px;font-size:14px;font-weight:600;color:#2A2E38;background:#F3F4F8;transition:background .15s}
.zt-det summary::-webkit-details-marker{display:none}
.zt-det summary::after{content:'';width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.5;transition:transform .15s}
.zt-det[open] summary{background:#EEF0FF;color:#3D46D6}
.zt-det[open] summary::after{transform:rotate(-135deg) translateY(-1px)}
.zt-det summary:hover{background:#E9EBF3}
.zt-ans{display:flex;align-items:center;gap:8px;margin-top:10px;padding:12px 16px;border-radius:14px;background:#EFFAF5;color:#0f6b47;font-size:17px;font-weight:600}
.zt-ans svg{color:#12A36B;flex:none}
.zt-sol{margin-top:10px;padding:16px 18px;border-radius:14px;background:#F8F9FC;color:#2A2E38;font-size:16px;line-height:1.7;overflow-x:auto}
.zvar{display:flex;flex-direction:column;gap:14px}
.zvar h2{margin:12px 0 0;font-size:24px;font-weight:700;letter-spacing:-.02em;color:#0C0E14}
.zvar-intro{padding:18px 20px;border-radius:18px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.07)}

/* вставка посреди задач */
.zpromo{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 24px;border-radius:22px;color:#fff;background:radial-gradient(500px 200px at 100% 0%,rgba(255,255,255,.18),transparent 60%),linear-gradient(120deg,#4B55E8,#6B2CB3)}
.zpromo b{font-size:19px;font-weight:700;letter-spacing:-.01em}
.zpromo p{margin:6px 0 0;font-size:14.5px;line-height:1.55;color:rgba(255,255,255,.82);max-width:470px}

/* колонка справа */
.zside{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px}
.zside-card{padding:22px;border-radius:22px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.07),0 24px 50px -34px rgba(30,36,120,.5)}
.zside-badge{display:inline-flex;padding:5px 10px;border-radius:999px;background:#EEF0FF;color:#3D46D6;font-size:12px;font-weight:600}
.zside-t{display:block;margin-top:12px;font-size:20px;line-height:1.25;letter-spacing:-.02em;font-weight:700;color:#0C0E14}
.zside-card ul{list-style:none;margin:14px 0 18px;padding:0;display:flex;flex-direction:column;gap:9px}
.zside-card li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;line-height:1.4;color:#2A2E38}
.zside-card li svg{flex:none;color:#12A36B;margin-top:1px}
.zside-card small{display:block;margin-top:10px;text-align:center;font-size:12.5px;color:#8A8F99}
.zside-nav{padding:18px;border-radius:22px;background:#fff;box-shadow:0 0 0 1px rgba(15,18,30,.07)}
.zside-nav b{font-size:14px;font-weight:600;color:#0C0E14}
.znums{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-top:12px}
.znums a{display:flex;align-items:center;justify-content:center;height:38px;border-radius:10px;background:#F3F4F8;color:#2A2E38;font-size:13.5px;font-weight:600;text-decoration:none;transition:background .15s,color .15s}
.znums a:hover{background:#EEF0FF;color:#3D46D6}
.znums a.on{background:#4B55E8;color:#fff}
.zside-other{display:block;margin-top:12px;font-size:13.5px;font-weight:600;color:#4B55E8;text-decoration:none}

/* финальный блок */
.zfinal{margin-top:56px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center;padding:44px;border-radius:30px;color:#fff;background:radial-gradient(700px 300px at 100% 0%,rgba(255,255,255,.16),transparent 60%),linear-gradient(125deg,#3D46D6,#5B2CB0 60%,#7A35C8);box-shadow:0 40px 80px -40px rgba(75,85,232,.7)}
.zfinal h2{margin:14px 0 0;font-size:clamp(26px,3vw,38px);line-height:1.1;letter-spacing:-.03em;font-weight:700}
.zfinal p{margin:14px 0 0;font-size:16px;line-height:1.6;color:rgba(255,255,255,.85);max-width:520px}
.zfinal .zdemo{transform:perspective(1400px) rotateY(-8deg) rotateX(3deg)}
.zmore-h{margin:56px 0 18px;font-size:24px;letter-spacing:-.02em;font-weight:700;color:#0C0E14}

/* подвал */
.zfoot{margin-top:64px;border-top:1px solid rgba(15,18,30,.08);background:#fff}
.zfoot-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding-top:26px;padding-bottom:26px;font-size:14px;color:#8A8F99}
.zfoot-l{display:flex;gap:22px}
.zfoot-l a{color:#565B66;text-decoration:none}
.zfoot-l a:hover{color:#0C0E14}

/* планшет и телефон */
@media (max-width:1020px){
  .zh-grid,.zfinal{grid-template-columns:1fr}
  .zh-grid .zdemo{max-width:560px}
  .zlay{grid-template-columns:1fr}
  .zside{display:none}
  .zfinal .zdemo{display:none}
}
@media (max-width:640px){
  .zh{padding:88px 0 36px}
  .zh-lead{font-size:16px}
  .zh-stats div{padding:10px 12px;flex:1 1 30%}
  .zh-stats b{font-size:16px}
  .zh-stats span{font-size:12px}
  .zh-h1 span{font-size:17px}
  .zh-btns .zb{width:100%}
  .zh-grid .zdemo{display:none}
  .zt{padding:18px 16px;border-radius:18px}
  .zt-has-fig .zt-body{grid-template-columns:1fr}
  .zt-fig{max-width:300px}
  .zd2 .zd-text{font-size:16px}
  .zpromo{flex-direction:column;align-items:stretch}
  .zfinal{padding:28px 22px;border-radius:24px}
  .znums{grid-template-columns:repeat(6,1fr)}
}
.zdemo-ink path:nth-child(2){animation-name:zink2}.zdemo-ink path:nth-child(3){animation-name:zink3}
@keyframes zink2{0%,22%{stroke-dashoffset:1}40%,88%{stroke-dashoffset:0}100%{stroke-dashoffset:0;opacity:0}}
@keyframes zink3{0%,36%{stroke-dashoffset:1}56%,88%{stroke-dashoffset:0}100%{stroke-dashoffset:0;opacity:0}}
.zdemo-ink{width:46%!important;left:80px!important;bottom:36px!important}
.zd2 .zvar-fig{display:flex;justify-content:center}.zd2 .zvar-fig svg,.zd2 .zvar-fig .task11-graph-wrap{min-width:min(100%,560px)}
.zd2 .zt-foot .zd-det{flex:0 1 auto;order:0}.zd2 .zt-foot .zd-det[open]{flex:1 1 100%}
@media (max-width:360px){.zn-in{gap:10px}.zn-logo span{display:none}}
.zfinal>*{min-width:0}
@media (max-width:380px){.zw{padding:0 14px}.zb{white-space:normal;text-align:center;height:auto;min-height:46px;padding:10px 16px}.zfinal{padding:24px 16px}.zn .zb{min-height:38px;padding:8px 12px}}