:root{--c:#2563eb;--bg:#f4f6fb;--card:#fff;--ink:#0f172a;--mut:#64748b;--line:#e2e8f0;--field:#fff;--ok:#15803d;--bad:#dc2626;--warn:#b45309;--shadow:0 10px 36px rgba(15,23,42,.07);--cs:color-mix(in srgb,var(--c) 11%,var(--card));--r:16px;color-scheme:light}
html[data-theme=dark]{--bg:#0a101d;--card:#121a2b;--ink:#e9eef8;--mut:#93a1b8;--line:#263249;--field:#0d1524;--ok:#4ade80;--bad:#f87171;--warn:#fbbf24;--shadow:0 12px 36px rgba(0,0,0,.4);color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"A Iranian Sans",Tahoma,"Segoe UI",system-ui,sans-serif;font-size:15px;line-height:1.85;min-height:100vh;display:flex;flex-direction:column;transition:background .2s,color .2s;overflow-x:hidden}
main{flex:1}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{-webkit-tap-highlight-color:transparent}
h1,h2,h3{line-height:1.5;margin:0}
[hidden]{display:none!important}
.wrap{width:min(1080px,100% - 32px);margin-inline:auto}
.ltr{direction:ltr;text-align:left}
/* header */
.hd{background:color-mix(in srgb,var(--card) 90%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.hd .wrap{display:flex;align-items:center;gap:12px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;min-width:0}
.brand span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.logo{width:40px;height:40px;border-radius:12px;background:var(--c);color:#fff;display:grid;place-items:center;font-size:20px;flex:none;overflow:hidden}
.nav{display:flex;align-items:center;gap:2px;margin-inline-start:12px;flex:1;min-width:0}
.nav a{padding:7px 13px;border-radius:10px;font-size:14.5px;color:var(--mut);white-space:nowrap;transition:background .15s,color .15s}
.nav a:hover,.nav a[aria-current=page]{background:var(--cs);color:var(--ink)}
.hd-act{display:flex;align-items:center;gap:8px;margin-inline-start:auto;flex:none}
.ib{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--card);display:grid;place-items:center;cursor:pointer;color:var(--ink);padding:0;flex:none}
.ib:hover{border-color:var(--c)}
.ib svg{width:20px;height:20px}
.ib .moon{display:none}html[data-theme=dark] .ib .moon{display:block}html[data-theme=dark] .ib .sun{display:none}
.cta{display:inline-flex;align-items:center;height:42px;padding:0 16px;border-radius:12px;background:var(--c);color:#fff;font-size:14px;white-space:nowrap}
.cta:hover{filter:brightness(1.08)}
.burger{display:none}
@media(max-width:860px){
.burger{display:grid}
.nav{position:absolute;top:64px;right:-16px;left:-16px;background:var(--card);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 16px 14px;margin:0;gap:2px;display:none;box-shadow:var(--shadow)}
.nav.open{display:flex}
.nav a{padding:12px 14px;font-size:15.5px}
}
@media(max-width:420px){.hd .wrap{gap:8px}.brand{font-size:16px}.logo{width:36px;height:36px;font-size:18px}.cta{padding:0 12px;font-size:13px}.ib{width:40px;height:40px}}
/* footer */
.ft{margin-top:48px;padding:24px 0;border-top:1px solid var(--line);background:var(--card);color:var(--mut);font-size:13px}
.ft .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 16px}
@media(max-width:560px){.ft .wrap{flex-direction:column;text-align:center;align-items:center}}
/* basics */
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 26px;border:0;border-radius:14px;background:var(--c);color:#fff;font-size:16px;cursor:pointer;transition:filter .15s,transform .05s,opacity .15s}
.btn:hover{filter:brightness(1.07)}.btn:active{transform:translateY(1px)}
.btn:disabled,.btn.busy{opacity:.5;cursor:not-allowed;filter:none}
.btn.wide{width:100%}
.btn.ghost{background:var(--card);color:var(--ink);border:1px solid var(--line)}
.field{margin:0 0 16px}
.field label,.lbl{display:block;font-size:13.5px;color:var(--mut);margin:0 0 7px}
.field input,.field select{width:100%;height:52px;border:1.5px solid var(--line);border-radius:14px;padding:0 16px;background:var(--field);font-size:16px;transition:border-color .15s,box-shadow .15s}
.field input.mob,.field input.num{font-size:19px;letter-spacing:1.5px;font-family:Tahoma,"Segoe UI",system-ui,sans-serif}
.field input::placeholder{color:color-mix(in srgb,var(--mut) 60%,transparent);letter-spacing:1px}
.field input:focus,.field select:focus{outline:0;border-color:var(--c);box-shadow:0 0 0 4px color-mix(in srgb,var(--c) 20%,transparent)}
.field input.bad{border-color:var(--bad)}
.hint{display:block;font-size:12.5px;min-height:20px;margin-top:5px;color:var(--mut)}
.hint.err{color:var(--bad)}
.msg{font-size:14px;min-height:24px;margin:10px 0}.msg.err{color:var(--bad)}.msg.ok{color:var(--ok)}
.note{padding:12px 14px;border-radius:12px;background:var(--cs);font-size:13.5px;margin:0 0 14px}
.note.err{background:color-mix(in srgb,var(--bad) 12%,var(--card));color:var(--bad)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:1px 11px;border-radius:99px;background:var(--cs);font-size:12.5px}
/* hero + shop */
.hero{padding:34px 0 22px;text-align:center}
.hero h1{font-size:clamp(22px,5.2vw,32px)}
.hero p{margin:8px auto 0;color:var(--mut);max-width:560px;font-size:15px}
.shop{max-width:720px;margin:0 auto;padding:8px;overflow:hidden}
.tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:6px;background:var(--bg);border-radius:15px}
.tab{border:0;background:transparent;border-radius:11px;min-height:48px;padding:6px 4px;cursor:pointer;color:var(--mut);font-size:14.5px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;line-height:1.4}
.tab svg{width:20px;height:20px}
.tab.on{background:var(--card);color:var(--c);box-shadow:0 2px 10px rgba(15,23,42,.08)}
.tab:disabled{opacity:.5;cursor:not-allowed}
.tab small{font-size:10.5px}
.pane{display:none;padding:20px 14px 14px}
.pane.on{display:block}
.blk{margin:0 0 18px}
.ops{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.op{border:1.5px solid var(--line);background:var(--field);border-radius:14px;padding:10px 4px 8px;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;font-size:13px;transition:border-color .15s,background .15s,opacity .15s}
.op img{width:44px;height:44px;object-fit:contain;border-radius:10px}
.op.on{border-color:var(--c);background:var(--cs)}
.op:disabled{cursor:default}
.op:disabled:not(.on){opacity:.38;filter:grayscale(1)}
.sw{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:13.5px;color:var(--mut);cursor:pointer;min-height:32px}
.sw input{position:absolute;opacity:0;pointer-events:none}
.sw i{width:44px;height:26px;border-radius:99px;background:var(--line);position:relative;flex:none;transition:background .15s}
.sw i::after{content:"";position:absolute;top:3px;right:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.25);transition:transform .15s}
.sw input:checked+i{background:var(--c)}.sw input:checked+i::after{transform:translateX(-18px)}
.sw input:focus-visible+i{box-shadow:0 0 0 4px color-mix(in srgb,var(--c) 25%,transparent)}
.seg{display:flex;gap:6px;padding:5px;background:var(--bg);border-radius:14px}
.seg button{flex:1;border:0;background:transparent;border-radius:10px;min-height:44px;cursor:pointer;color:var(--mut);font-size:14.5px;padding:0 6px}
.seg button.on{background:var(--card);color:var(--c);box-shadow:0 2px 8px rgba(15,23,42,.08)}
.amts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.amt{border:1.5px solid var(--line);background:var(--field);border-radius:14px;min-height:62px;padding:8px 4px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.5}
.amt b{font-size:17px;font-weight:700}.amt small{font-size:11.5px;color:var(--mut)}
.amt.on,.pkg.on{border-color:var(--c);background:var(--cs);box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 16%,transparent)}
.flt{display:grid;gap:10px;margin:0 0 12px}
.chips{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px;-webkit-overflow-scrolling:touch}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:1.5px solid var(--line);background:var(--field);border-radius:99px;min-height:38px;padding:0 14px;cursor:pointer;font-size:13.5px;color:var(--mut);white-space:nowrap}
.chip.on{border-color:var(--c);background:var(--cs);color:var(--ink)}
.flt-h{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--mut)}
.flt-h select{height:38px;border:1.5px solid var(--line);border-radius:10px;background:var(--field);padding:0 10px;font-size:13.5px}
.pkgs{display:grid;gap:8px}
.pkg{display:grid;grid-template-columns:1fr auto;gap:2px 12px;align-items:center;text-align:right;border:1.5px solid var(--line);background:var(--field);border-radius:14px;padding:12px 14px;cursor:pointer;width:100%}
.pkg .pk-n{font-size:14.5px;line-height:1.7}
.pkg .pk-m{grid-column:1;display:flex;flex-wrap:wrap;gap:6px}
.pkg .pk-m i{font-style:normal;font-size:12px;color:var(--mut);background:var(--bg);border-radius:99px;padding:0 9px}
.pkg .pk-p{grid-column:2;grid-row:1/3;text-align:left;font-size:12px;color:var(--mut);white-space:nowrap}
.pkg .pk-p b{display:block;font-size:16.5px;color:var(--ink)}
.more{margin-top:10px}
.empty{padding:22px 12px;text-align:center;color:var(--mut);font-size:14px;border:1.5px dashed var(--line);border-radius:14px}
.sum{border:1.5px dashed var(--line);border-radius:14px;padding:6px 14px;margin:0 0 12px}
.sum div{display:flex;justify-content:space-between;gap:10px;padding:7px 0;font-size:14px;color:var(--mut)}
.sum div+div{border-top:1px dashed var(--line)}
.sum div b{color:var(--ink);font-weight:400}
.sum div.tot{font-size:15.5px;color:var(--ink)}.sum div.tot b{font-size:18px;font-weight:700;color:var(--c)}
.taxnote{font-size:12.5px;color:var(--mut);margin:0 0 6px;text-align:center}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:720px;margin:22px auto 0}
.feat{padding:16px;text-align:center;font-size:13.5px;color:var(--mut);border-radius:16px}
.feat b{display:block;color:var(--ink);font-size:15px;font-weight:700;margin-bottom:2px}
@media(max-width:560px){
.hero{padding:22px 0 14px}.hero p{font-size:14px}
.wrap{width:calc(100% - 24px)}
.shop{padding:6px;border-radius:18px}
.pane{padding:16px 8px 10px}
.tab{font-size:13px;min-height:54px}
.ops{gap:6px}.op{font-size:12px;padding:8px 2px 6px}.op img{width:38px;height:38px}
.amts{grid-template-columns:repeat(2,1fr)}
.pkg{padding:11px 12px}
.feats{grid-template-columns:1fr;gap:8px}
.feat{display:flex;align-items:center;gap:8px;text-align:right;padding:12px 14px}.feat b{margin:0;flex:none}
.row2{grid-template-columns:1fr}
}
/* otp sheet */
.sheet{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:16px}
.sheet-bg{position:absolute;inset:0;background:rgba(2,6,23,.6);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.sheet-box{position:relative;width:min(420px,100%);background:var(--card);border:1px solid var(--line);border-radius:22px;padding:24px 22px 20px;box-shadow:0 30px 80px rgba(0,0,0,.35);animation:up .22s ease}
@keyframes up{from{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}
.sheet-box h3{font-size:18px;margin:0 0 6px}
.sheet-box p{margin:0 0 14px;color:var(--mut);font-size:14px}
.sheet-box .x{position:absolute;top:12px;left:12px;width:38px;height:38px;border:0;background:var(--bg);border-radius:10px;cursor:pointer;font-size:20px;line-height:1;color:var(--mut)}
.code{width:100%;height:58px;border:1.5px solid var(--line);border-radius:14px;background:var(--field);text-align:center;font-size:26px;letter-spacing:10px;font-family:Tahoma,"Segoe UI",system-ui,sans-serif;direction:ltr}
.code:focus{outline:0;border-color:var(--c);box-shadow:0 0 0 4px color-mix(in srgb,var(--c) 20%,transparent)}
.otp-f{display:flex;justify-content:space-between;gap:10px;margin-top:14px}
.lnk{border:0;background:none;color:var(--c);cursor:pointer;font-size:13.5px;padding:6px 2px}
.lnk:disabled{color:var(--mut);cursor:default}
@media(max-width:560px){.sheet{place-items:end center;padding:0}.sheet-box{width:100%;border-radius:22px 22px 0 0;border-bottom:0;padding-bottom:calc(20px + env(safe-area-inset-bottom))}}
/* invoice / simple pages */
.pg{max-width:560px;margin:28px auto;padding:22px}
.pg h1{font-size:20px;margin:0 0 14px}
.rows>div{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.rows span{color:var(--mut);flex:none}.rows b{text-align:left;font-weight:400;overflow-wrap:anywhere}
.rows .tot{border-bottom:0;font-size:16px}.rows .tot b{font-size:21px;font-weight:700;color:var(--c)}
.gws{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin:8px 0 16px}
.gw{position:relative;border:1.5px solid var(--line);background:var(--field);border-radius:16px;padding:14px 10px 12px;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer;font-size:14px;text-align:center}
.gw input{position:absolute;opacity:0}
.gw img{width:64px;height:64px;object-fit:contain;background:#fff;border-radius:14px;padding:6px}
.gw:has(input:checked){border-color:var(--c);background:var(--cs);box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 16%,transparent)}
.gw:has(input:focus-visible){outline:2px solid var(--c);outline-offset:2px}
.center{text-align:center}
.state{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;margin:4px auto 12px;font-size:34px;color:#fff;background:var(--ok)}
.state.bad{background:var(--bad)}.state.wait{background:var(--warn)}
@media(max-width:560px){.pg{margin:16px auto;padding:18px 14px;border-radius:18px}.gws{grid-template-columns:repeat(2,1fr)}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}