/* Стеклоплан — сайт. Палитра: бумага чертежа, морское стекло, кромка стекла, красный размерных линий (только в чертеже). */
:root{
  --paper:#f6f9f8; --surface:#ffffff; --ink:#13252a; --muted:#56686d; --line:#d4dfdd;
  --sea:#d5e8e4; --edge:#22706b; --edge-ink:#ffffff; --edge-2:#1a5955; --dim:#c4462f; --ok:#2f7d4f; --warn:#a36a12;
  --f-display:"Unbounded","Onest",system-ui,sans-serif; --f-body:"Onest",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r:10px; --wrap:1180px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0f1a1d; --surface:#152327; --ink:#e2ecea; --muted:#93a7aa; --line:#263a3d;
  --sea:#1b3331; --edge:#5fbdb4; --edge-ink:#0b1517; --edge-2:#79cfc6; --dim:#e07a63; --ok:#6cc792; --warn:#e0a640; color-scheme:dark}}
:root[data-theme="dark"]{--paper:#0f1a1d;--surface:#152327;--ink:#e2ecea;--muted:#93a7aa;--line:#263a3d;--sea:#1b3331;--edge:#5fbdb4;--edge-ink:#0b1517;--edge-2:#79cfc6;--dim:#e07a63;color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
a{color:var(--edge)}
img,video,svg{max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
.muted{color:var(--muted)} .small{font-size:13.5px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;z-index:99;background:var(--surface);padding:8px 12px;border-radius:6px}
:focus-visible{outline:2px solid var(--edge);outline-offset:2px}
h1,h2,h3{margin:0;color:var(--ink)}
h1{font:700 clamp(30px,4.6vw,54px)/1.08 var(--f-display);letter-spacing:-.02em;text-wrap:balance}
h2{font:700 clamp(23px,2.8vw,34px)/1.15 var(--f-display);letter-spacing:-.01em;text-wrap:balance}
h3{font:600 19px/1.3 var(--f-body)}
p{margin:0}

/* кнопки */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:8px;border:1.5px solid var(--edge);background:var(--edge);color:var(--edge-ink);font:600 16px var(--f-body);text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--edge-2);border-color:var(--edge-2)}
.btn.ghost{background:transparent;color:var(--edge)}.btn.ghost:hover{background:var(--sea)}
.btn.sm{padding:8px 14px;font-size:15px}
.btn[disabled]{opacity:.55;cursor:default}
.linkish{background:none;border:0;padding:0;color:inherit;font:inherit;cursor:pointer}
.bal{display:inline-block;min-width:22px;padding:0 7px;border-radius:99px;background:var(--edge-ink);color:var(--edge);font-size:13px;line-height:20px}

/* шапка */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:20px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 19px var(--f-display);letter-spacing:-.01em}
.nav{display:flex;gap:22px;margin-left:12px}
.nav a,.nav .linkish{color:var(--ink);text-decoration:none;font-weight:500}
.nav a:hover,.nav .linkish:hover{color:var(--edge)}
.acct{margin-left:auto;display:flex;gap:8px}
@media (max-width:820px){.nav{display:none}.acct .btn.ghost{display:none}}
@media (max-width:420px){.logo span{display:none}}

/* главная: первый экран */
.hero{padding:56px 0 40px}
.hero-in{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
@media (max-width:960px){.hero-in{grid-template-columns:1fr;gap:32px}}
.hero .lead{margin-top:18px;font-size:19px;color:var(--muted);max-width:34em}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero .fine{margin-top:14px;font-size:14px;color:var(--muted)}
.pane{position:relative;padding:18px;border-radius:6px;background:var(--sea);border:3px solid var(--edge);box-shadow:0 24px 50px -30px rgba(19,37,42,.55)}
.pane::after{content:"";position:absolute;inset:-3px;border-radius:6px;pointer-events:none;background:linear-gradient(120deg,rgba(255,255,255,.55),transparent 28%,transparent 70%,rgba(255,255,255,.25))}
.sheet{display:block;background:#fff;border-radius:2px;overflow:hidden}
.sheet svg{display:block;width:100%;height:auto}
.plot{animation:plot 2.6s cubic-bezier(.45,.05,.3,1) .25s both}
@keyframes plot{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
@media (prefers-reduced-motion:reduce){.plot{animation:none}}
.pane-cap{display:flex;justify-content:space-between;gap:12px;margin-top:10px;font-size:13.5px;color:var(--edge-2)}
@media (prefers-color-scheme:dark){.pane-cap{color:var(--edge)}}

/* разделы */
.sec{padding:72px 0}
.sec + .sec{border-top:1px solid var(--line)}
.sec-head{max-width:44em;margin-bottom:32px}
.sec-head p{margin-top:12px;color:var(--muted);font-size:17px}

/* видео */
.player{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}
@media (max-width:900px){.player{grid-template-columns:1fr}}
.screen{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:var(--surface);aspect-ratio:1280/760}
.screen video{display:block;width:100%;height:100%;object-fit:cover}
.chapters{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.chapters button{width:100%;text-align:left;padding:14px 16px;border-radius:8px;border:1px solid transparent;background:none;color:var(--ink);font:inherit;cursor:pointer;display:block}
.chapters button b{display:block;font-weight:600}
.chapters button span{display:block;color:var(--muted);font-size:14.5px;margin-top:2px}
.chapters button[aria-pressed="true"]{background:var(--surface);border-color:var(--line);box-shadow:inset 3px 0 0 var(--edge)}
.chapters button:hover{background:var(--surface)}

/* возможности */
.cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}
@media (max-width:900px){.cols{grid-template-columns:1fr}}
.col{padding:4px 28px 4px 0}
.col + .col{padding-left:28px;border-left:1px solid var(--line)}
@media (max-width:900px){.col{padding:20px 0}.col + .col{padding-left:0;border-left:0;border-top:1px solid var(--line)}}
.col h3{margin-bottom:10px}
.col ul{margin:0;padding-left:18px;color:var(--ink)}
.col li{margin:6px 0}
.col .sup{margin-top:14px;font-size:14px;color:var(--muted)}

/* шаги оплаты — настоящая последовательность */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;counter-reset:s}
@media (max-width:820px){.steps{grid-template-columns:1fr}}
.steps li{counter-increment:s;position:relative;padding-top:52px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;border:2px solid var(--edge);display:grid;place-items:center;font:700 16px var(--f-display);color:var(--edge)}
.steps li p{color:var(--muted);margin-top:6px}

/* тарифы */
.plans{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:980px){.plans{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.plans{grid-template-columns:1fr}}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:flex;flex-direction:column;gap:6px}
.plan.best{border:2px solid var(--edge)}
.plan .qty{font:700 34px/1 var(--f-display)}
.plan .qty small{font:600 16px var(--f-body);color:var(--muted);margin-left:6px}
.plan .price{font-size:22px;font-weight:600;margin-top:10px}
.plan .per{color:var(--muted);font-size:14.5px}
.plan .tag{font-size:14px;color:var(--edge);font-weight:600;min-height:21px}
.plan .btn{margin-top:14px}
.plans-note{margin-top:18px;color:var(--muted);max-width:52em}
.notice{padding:14px 16px;border-radius:8px;border:1px solid var(--line);background:var(--surface);margin-top:16px}
.notice.warn{border-color:color-mix(in srgb,var(--warn) 50%,var(--line))}
.notice.ok{border-color:color-mix(in srgb,var(--ok) 50%,var(--line))}

/* вопросы */
.faq > *{max-width:52em}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:17px}
.faq details p{margin-top:10px;color:var(--muted)}

.final{text-align:left;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}

/* формы */
.formbox{max-width:440px;margin:48px auto;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px}
.tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--line)}
.tabs button{background:none;border:0;padding:10px 12px;font:600 15px var(--f-body);color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--edge)}
.fld{display:flex;flex-direction:column;gap:5px;margin-bottom:14px;font-size:14.5px}
.fld input,.fld textarea{padding:11px 12px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);font:16px var(--f-body)}
.fld input:focus,.fld textarea:focus{outline:2px solid var(--edge);outline-offset:0;border-color:var(--edge)}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);margin:6px 0 16px}
.chk input{margin-top:4px}
.err{color:var(--dim);font-size:14.5px;margin:0 0 12px}
.ok-msg{color:var(--ok);font-size:14.5px;margin:0 0 12px}
form .btn{width:100%}

/* кабинет */
.cab{padding:36px 0 72px}
.cab-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.cab-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px;align-items:start}
@media (max-width:960px){.cab-grid{grid-template-columns:1fr}}
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.box + .box{margin-top:20px}
.box h2{font-size:20px;margin-bottom:12px}
.balance{display:flex;align-items:baseline;gap:10px}
.balance b{font:700 56px/1 var(--f-display)}
.balance span{color:var(--muted)}
.apps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:14px}
.apps a{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink)}
.apps a:hover{border-color:var(--edge)}
.apps a small{display:block;color:var(--muted)}
.tbl{width:100%;border-collapse:collapse;font-size:15px}
.tbl th{text-align:left;font-weight:600;color:var(--muted);font-size:13.5px;padding:6px 8px 6px 0;border-bottom:1px solid var(--line)}
.tbl td{padding:9px 8px 9px 0;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td.n{text-align:right;white-space:nowrap}
.empty{color:var(--muted);padding:6px 0}

/* документы */
.doc{max-width:46em;margin:40px auto 72px}
.doc h1{font-size:clamp(26px,3.4vw,36px);margin-bottom:12px}
.doc h2{font-size:20px;margin:28px 0 8px;font-family:var(--f-body);font-weight:700}
.doc p,.doc li{margin:8px 0}
.doc .fill{background:color-mix(in srgb,var(--warn) 18%,transparent);padding:0 3px;border-radius:3px}

/* подвал */
.foot{border-top:1px solid var(--line);padding:36px 0 44px;margin-top:0}
.foot-in{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:24px}
.foot-in nav{display:flex;flex-direction:column;gap:6px}
.foot-in nav a,.foot-in nav .linkish{color:var(--ink);text-decoration:none;text-align:left}
.foot-brand{font:700 18px var(--f-display);margin-bottom:6px}
.foot-in .small{grid-column:1/-1}
@media (max-width:700px){.foot-in{grid-template-columns:1fr}}

/* чат поддержки */
.chat-fab{position:fixed;right:16px;bottom:16px;z-index:40;display:flex;align-items:center;gap:8px;padding:12px 16px;border-radius:99px;border:0;background:var(--ink);color:var(--paper);font:600 15px var(--f-body);cursor:pointer;box-shadow:0 10px 30px -10px rgba(0,0,0,.45)}
.chat-fab .dot{width:9px;height:9px;border-radius:50%;background:var(--dim)}
.chat{position:fixed;right:16px;bottom:16px;z-index:41;width:min(380px,calc(100vw - 32px));height:min(560px,calc(100vh - 32px));background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:0 24px 60px -20px rgba(0,0,0,.45);display:flex;flex-direction:column;overflow:hidden}
.chat[hidden]{display:none}
.chat-h{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}
.chat-h b{font-size:16px}.chat-h small{display:block;color:var(--muted);font-size:13px}
.chat-x{background:none;border:0;font-size:24px;line-height:1;color:var(--muted);cursor:pointer;padding:4px}
.chat-log{flex:1;overflow:auto;padding:14px 16px;display:flex;flex-direction:column;gap:8px}
.msg{max-width:85%;padding:9px 12px;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px}
.msg.me{align-self:flex-end;background:var(--edge);color:var(--edge-ink);border-bottom-right-radius:4px}
.msg.them{align-self:flex-start;background:var(--sea);color:var(--ink);border-bottom-left-radius:4px}
.msg time{display:block;font-size:11.5px;opacity:.7;margin-top:2px}
.chat-f{border-top:1px solid var(--line);padding:10px;display:flex;flex-direction:column;gap:8px}
.chat-f input,.chat-f textarea{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);font:15px var(--f-body);resize:none}
.chat-f .row{display:flex;gap:8px}.chat-f .row textarea{flex:1}
.chat-f .btn{padding:8px 14px;width:auto}
.chat-f .row textarea{min-width:0}

/* капча */
.cap{min-height:102px;margin:4px 0 14px}
.chat-f .cap{min-height:0;margin:0}

/* промокод */
.promo{max-width:420px;margin:0 0 20px}
.promo label{display:block;font-size:14.5px;margin-bottom:5px}
.promo-row{display:flex;gap:8px}
.promo-row input{flex:1;min-width:0;padding:9px 12px;border:1px solid var(--line);border-radius:7px;background:var(--surface);color:var(--ink);font:16px var(--f-body);text-transform:uppercase}
.promo-row input:focus{outline:2px solid var(--edge);outline-offset:0;border-color:var(--edge)}
.promo .btn{width:auto}
.plan .old{color:var(--muted);text-decoration:line-through;font-size:15px;font-weight:500;margin-left:8px}

/* карусель листов на первом экране */
.carousel .slides{position:relative}
.carousel .slide img{display:block;width:100%;height:auto;background:#fff;border-radius:2px}
.car-nav{display:flex;align-items:center;gap:6px;white-space:nowrap}
.car-nav button{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--edge);background:var(--surface);color:var(--edge);font:700 18px/1 var(--f-body);cursor:pointer;display:grid;place-items:center}
.car-nav button:hover{background:var(--edge);color:var(--edge-ink)}
.car-nav span{font-size:13.5px;min-width:3.2em;text-align:center;font-variant-numeric:tabular-nums}
.pane-cap{align-items:center}
.pane-cap [data-cap]{min-width:0}
.partner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}