/* CryptoSales — дизайн-система */
:root{
  --bg:#f6f5f1; --surface:#fff; --surface-2:#efeee9; --sunken:#f9f8f5;
  --line:#e4e2db; --line-2:#d3d0c7;
  --text:#141412; --muted:#5e5c56; --dim:#8f8c84;
  --ink:#141412; --ink-hover:#2b2b28; --on-ink:#fff;
  --accent:#145c43; --accent-soft:#e6efe9;
  --good:#1d7350; --warn:#8a6100; --bad:#b3261e; --info:#2c5aa0;
  --good-soft:#e7f1eb; --warn-soft:#f7efdc; --bad-soft:#f8e6e4; --info-soft:#e7edf6;
  --code-bg:#161614; --code-text:#d9d6cd; --code-line:#2a2a27; --code-dim:#8a877e;
  --nav-bg:rgba(246,245,241,.92); --selection:#d9e7df; --focus-ring:rgba(20,20,18,.06); --bar-muted:#c9c5ba;
  --radius:12px; --radius-sm:8px;
  --shadow:0 1px 2px rgba(20,20,18,.04);
  --shadow-lg:0 24px 60px -24px rgba(20,20,18,.28);
  --font:'Onest',system-ui,-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  /* старые имена — для разметки, которую рендерит JS */
  --mint:var(--accent); --blue:var(--info); --violet:var(--text); --gold:var(--warn);
  --solid:var(--surface); --solid-2:var(--surface);
}
[data-theme=dark]{
  --bg:#121211; --surface:#1b1b19; --surface-2:#242422; --sunken:#171716;
  --line:#2c2c29; --line-2:#3a3a36;
  --text:#ecebe6; --muted:#a3a19a; --dim:#76746d;
  --ink:#ecebe6; --ink-hover:#fff; --on-ink:#141412;
  --accent:#7fbf9f; --accent-soft:#1f2e27;
  --good:#7fbf9f; --warn:#d6b25e; --bad:#e8857c; --info:#8fb0e0;
  --good-soft:#1f2e27; --warn-soft:#2e2919; --bad-soft:#33201e; --info-soft:#1e2633;
  --code-bg:#0c0c0b; --code-line:#262623;
  --nav-bg:rgba(18,18,17,.9); --selection:#2c4438; --focus-ring:rgba(236,235,230,.08); --bar-muted:#4a4944;
  --shadow:none; --shadow-lg:0 24px 60px -24px rgba(0,0,0,.7);
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 15px/1.6 var(--font);-webkit-font-smoothing:antialiased;min-height:100vh;overflow-x:hidden;font-feature-settings:"tnum" 1}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--selection)}
h1,h2,h3{font-weight:500;letter-spacing:-.02em;line-height:1.15}
.mono{font-family:var(--mono);font-size:.92em}
.muted{color:var(--muted)} .dim{color:var(--dim)}
.grad{color:inherit}
.link{color:var(--text);text-decoration:underline;text-decoration-color:var(--line-2);text-underline-offset:3px;transition:text-decoration-color .15s}
.link:hover{text-decoration-color:currentColor}
.container{max-width:1160px;margin:0 auto;padding:0 32px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

/* Шапка */
.nav{position:sticky;top:0;z-index:20;background:var(--nav-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .container{display:flex;align-items:center;gap:32px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.015em;font-size:17px;white-space:nowrap}
.logo{display:block;height:17px;width:auto;flex:none}
.logo-dark,[data-theme=dark] .logo-light{display:none}
[data-theme=dark] .logo-dark{display:block}
.brand small{font-weight:400;font-size:14px;color:var(--dim);margin-left:2px;letter-spacing:0}
.nav-links{display:flex;gap:28px;margin-left:auto}
.nav-links a{color:var(--muted);font-size:14px;transition:color .15s;padding:4px 0}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-cta{margin-left:4px}
.theme-btn{flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:var(--radius-sm);border:1px solid transparent;background:none;color:var(--muted);cursor:pointer;transition:color .15s,background .15s}
.theme-btn:hover{color:var(--text);background:var(--surface-2)}
.theme-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.theme-btn .sun,[data-theme=dark] .theme-btn .moon{display:none}
[data-theme=dark] .theme-btn .sun{display:block}
.lang-menu{position:relative;flex:none;margin-right:-24px}
.lang-menu summary{list-style:none;display:flex;align-items:center;gap:6px;height:34px;padding:0 8px;border-radius:var(--radius-sm);color:var(--muted);font-size:13px;font-weight:500;cursor:pointer;user-select:none;transition:color .15s,background .15s}
.lang-menu summary::-webkit-details-marker{display:none}
.lang-menu summary:hover,.lang-menu[open] summary{color:var(--text);background:var(--surface-2)}
.lang-menu summary svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5}
.lang-pop{position:absolute;right:0;top:calc(100% + 8px);z-index:30;min-width:156px;padding:6px;display:grid;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg)}
.lang-pop a{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-radius:6px;font-size:14px;color:var(--muted)}
.lang-pop a:hover{background:var(--surface-2);color:var(--text)}
.lang-pop a[aria-current]{color:var(--text);font-weight:500}
.lang-pop a[aria-current]::after{content:"";width:9px;height:5px;margin-bottom:3px;border-left:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(-45deg)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line-2);border-radius:var(--radius-sm);width:40px;height:40px;cursor:pointer}

/* Кнопки */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;border-radius:var(--radius-sm);border:1px solid var(--line-2);background:var(--surface);font-weight:500;font-size:14px;cursor:pointer;transition:background .15s,border-color .15s,color .15s;white-space:nowrap}
.btn:hover{border-color:var(--dim)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-primary{border-color:var(--ink);background:var(--ink);color:var(--on-ink)}
.btn-primary:hover{background:var(--ink-hover);border-color:var(--ink-hover)}
.btn-lg{height:50px;padding:0 24px;font-size:15px}
.btn-sm{height:34px;padding:0 12px;font-size:13px}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-ghost:hover{color:var(--text);border-color:transparent;background:var(--surface-2)}
.btn-danger{color:var(--bad)}
.btn-danger:hover{border-color:var(--bad)}
.icon-btn{width:34px;height:34px;padding:0}

/* Карточки */
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.card h3{margin:0 0 4px;font-size:17px}

/* Поля */
.label{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-bottom:8px}
.input,.select,textarea.input{width:100%;height:46px;background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:0 14px;outline:none;transition:border-color .15s,box-shadow .15s}
textarea.input{height:auto;min-height:84px;padding:12px 14px;resize:vertical}
.input::placeholder{color:var(--dim)}
.input:focus,.select:focus{border-color:var(--ink);box-shadow:0 0 0 3px var(--focus-ring)}
.input.mono{font-family:var(--mono);font-size:14px}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238f8c84' stroke-width='1.4' fill='none'/%3E%3C/svg%3E");background-position:calc(100% - 14px) 50%;background-repeat:no-repeat;padding-right:36px}
.field{margin-bottom:20px}
.hint{font-size:13px;color:var(--dim);margin-top:8px}
.stepper{display:flex;align-items:stretch;height:46px;background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius-sm);overflow:hidden}
.stepper:focus-within{border-color:var(--ink)}
.stepper button{width:44px;border:0;background:transparent;font-size:18px;color:var(--muted);cursor:pointer}
.stepper button:hover{color:var(--text);background:var(--surface-2)}
.stepper button:disabled{opacity:.35;cursor:not-allowed;background:transparent}
.stepper input{flex:1;min-width:0;border:0;background:transparent;text-align:center;font:500 16px var(--font);outline:none;-moz-appearance:textfield}
.stepper input::-webkit-inner-spin-button,.suffix-input input::-webkit-inner-spin-button{-webkit-appearance:none}
.suffix-input{position:relative}
.suffix-input .input{padding-right:44px}
.suffix-input span{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--dim);pointer-events:none}

/* Переключатели */
.seg{display:grid;gap:8px}
.seg-3{grid-template-columns:repeat(3,1fr)}
.seg button{text-align:left;border:1px solid var(--line-2);background:var(--surface);border-radius:var(--radius-sm);padding:11px 14px;cursor:pointer;transition:border-color .15s,box-shadow .15s}
.seg button:hover{border-color:var(--dim)}
.seg button b{display:block;font-size:14px;font-weight:500}
.seg button small{display:block;font-size:12px;color:var(--dim);margin-top:2px}
.seg button[aria-pressed=true]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{height:36px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--line-2);background:var(--surface);font-weight:500;font-size:13px;cursor:pointer;transition:border-color .15s,background .15s,color .15s}
.chip:hover{border-color:var(--dim)}
.chip[aria-pressed=true]{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.chip:disabled{opacity:.35;cursor:not-allowed}
.toggle{position:relative;width:40px;height:24px;border-radius:999px;background:var(--line-2);border:0;cursor:pointer;transition:background .2s;flex:none}
.toggle::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.toggle[aria-checked=true]{background:var(--accent)}
.toggle[aria-checked=true]::after{transform:translateX(16px)}

/* Бейджи */
.badge{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 8px;border-radius:6px;font-size:12px;font-weight:500;background:var(--surface-2);color:var(--muted);white-space:nowrap}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.plain::before{display:none}
.b-good{color:var(--good);background:var(--good-soft)}
.b-warn{color:var(--warn);background:var(--warn-soft)}
.b-bad{color:var(--bad);background:var(--bad-soft)}
.b-info{color:var(--info);background:var(--info-soft)}
.b-dim{color:var(--muted)}

/* Таблицы */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius-sm)}
table.t{width:100%;border-collapse:collapse;font-size:14px}
.t th{text-align:left;font-size:12px;color:var(--dim);font-weight:500;padding:11px 14px;background:var(--sunken);border-bottom:1px solid var(--line);white-space:nowrap}
.t td{padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap;vertical-align:middle}
.t tr:last-child td{border-bottom:0}
.t tbody tr{transition:background .1s}
.t tbody tr:hover{background:var(--sunken)}
.t .num{text-align:right}
.t th.num{text-align:right}
.t a:hover{text-decoration:underline}

/* Секции сайта */
section.block{padding:112px 0}
.section-head{max-width:620px;margin-bottom:48px}
.section-head .kicker{display:block;font-size:13px;color:var(--dim)}
.section-head h2{font-size:clamp(28px,3.6vw,40px);margin:10px 0 14px}
.section-head p{color:var(--muted);font-size:17px;margin:0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
details.faq{border-bottom:1px solid var(--line)}
details.faq summary{list-style:none;cursor:pointer;padding:22px 0;font-size:17px;font-weight:500;display:flex;justify-content:space-between;align-items:center;gap:24px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"";flex:none;width:10px;height:10px;border-right:1.5px solid var(--dim);border-bottom:1.5px solid var(--dim);transform:rotate(45deg) translate(-3px,-3px);transition:transform .2s}
details.faq[open] summary::after{transform:rotate(225deg)}
details.faq p{margin:0;padding:0 48px 24px 0;color:var(--muted)}

/* Код */
pre.code{margin:0;background:var(--code-bg);border-radius:var(--radius-sm);padding:20px 22px;overflow-x:auto;font:13px/1.7 var(--mono);color:var(--code-text)}
pre.code .k{color:#c9c4b5} pre.code .s{color:#a8c8b4} pre.code .n{color:#e0c48f} pre.code .c{color:#77746b}
code.inline{font-family:var(--mono);font-size:.86em;padding:1px 6px;border-radius:5px;background:var(--surface-2);color:var(--text)}

/* Подвал */
footer.site{border-top:1px solid var(--line);padding:40px 0 48px;color:var(--dim);font-size:13px}
footer.site .container{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-start}
footer.site nav{display:flex;gap:24px;flex-wrap:wrap}
footer.site a:hover{color:var(--text)}
footer.site .foot-note{max-width:440px;margin:6px 0 0;line-height:1.5}

/* Модалки и уведомления */
.modal-bg{position:fixed;inset:0;z-index:50;background:rgba(20,20,18,.36);display:none;align-items:center;justify-content:center;padding:20px}
.modal-bg.open{display:flex;animation:fade .15s}
.modal{width:100%;max-width:460px;max-height:calc(100vh - 40px);overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-lg);animation:up .2s}
.modal.wide{max-width:760px}
.modal h3{margin:0 0 16px;font-size:20px}
.modal .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:24px}
.toast-wrap{position:fixed;right:20px;bottom:20px;z-index:60;display:grid;gap:8px}
.toast{min-width:260px;max-width:380px;padding:12px 16px;border-radius:var(--radius-sm);background:var(--ink);color:var(--on-ink);box-shadow:var(--shadow-lg);font-size:14px;animation:up .2s}
.toast.err{background:var(--bad);color:#fff}
.keybox{display:flex;gap:10px;align-items:center;padding:12px 14px;border-radius:var(--radius-sm);background:var(--sunken);border:1px solid var(--line-2);font:13px var(--mono);word-break:break-all}
.keybox span{flex:1}
.alert{padding:12px 16px;border-radius:var(--radius-sm);font-size:14px}
.alert-warn{color:var(--warn);background:var(--warn-soft)}
.alert-bad{color:var(--bad);background:var(--bad-soft)}
.alert a{text-decoration:underline}

@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes up{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.skeleton{position:relative;display:inline-block;color:transparent!important;border-radius:6px;background:var(--surface-2);animation:breathe 1.4s ease-in-out infinite}
@keyframes breathe{50%{opacity:.5}}
.spinner{width:28px;height:28px;border-radius:50%;border:2px solid var(--line-2);border-top-color:var(--ink);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

@media (max-width:960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  section.block{padding:80px 0}
}
@media (max-width:760px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;padding:8px 16px 16px;background:var(--bg);border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-links a:last-child{border-bottom:0}
  .burger{display:grid;place-items:center;margin-left:4px}
  .nav .container{gap:16px}
  .logo{height:15px}
  .nav .brand small{display:none}
  .nav .theme-btn{margin-left:auto}
  .nav .lang-menu{margin-left:auto;margin-right:-12px}
  .nav .lang-menu + .theme-btn{margin-left:0}
  .nav-cta{display:none}
  .seg-3{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .card{padding:20px}
  .container{padding:0 16px}
  section.block{padding:64px 0}
}