:root{
--navy:#FFFFFF; --navy-2:#EDF3FB; --surface:#FFFFFF; --border:#E1E9F3; --border-soft:#EBF1F8;
--cyan:#1EC8E6; --blue:#2C6BE6; --blue-dark:#1B52C0; --green:#1FB866;
--ink:#0E2038; --text:#46586E; --muted:#8395AB;
--radius:18px; --maxw:1180px;
--tile:var(--tile); --img-bg:var(--img-bg); --soft:var(--soft); --blob:#DCEAFB;
}
[data-theme="dark"]{
--navy:#0B1423; --navy-2:#0E1B30; --surface:#13243F; --border:#21385C; --border-soft:#1a2c49;
--cyan:#2BD9F2; --blue:#3d7bef; --blue-dark:#5b90f5; --green:#37e07a;
--ink:#EAF3FB; --text:#B6C7DC; --muted:#7C92AF;
--tile:#0E1D34; --img-bg:#0E1D34; --soft:#0E1D34; --blob:#16335c;
}
[data-theme="dark"] header{background:rgba(11,20,35,.78)}
[data-theme="dark"] header.scrolled{background:rgba(11,20,35,.94)}
[data-theme="dark"] .fx .dots{background-image:radial-gradient(rgba(43,217,242,.18) 1px,transparent 1px)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--navy);color:var(--text);font-family:"Vazirmatn",system-ui,sans-serif;line-height:1.9;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:"Lalezar",cursive;color:var(--ink);font-weight:400;line-height:1.35;letter-spacing:.3px}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.accent{color:var(--blue)}

.btn{display:inline-flex;align-items:center;gap:8px;font-family:"Vazirmatn";font-weight:600;font-size:15px;padding:13px 26px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:.22s ease;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 26px -16px var(--blue)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn svg{width:18px;height:18px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.8);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:.25s}
header.scrolled{border-bottom-color:var(--border-soft);background:rgba(255,255,255,.95)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand img{height:38px;width:auto;display:block}
.menu{display:flex;align-items:center;gap:28px;list-style:none}
.menu a{font-size:15px;color:var(--text);font-weight:500;position:relative;padding:4px 0;transition:.2s}
.menu a:hover{color:var(--ink)}
.menu a::after{content:"";position:absolute;bottom:-2px;right:0;width:0;height:2px;background:var(--blue);transition:.25s}
.menu a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:12px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}

/* bubbles */
.bubbles{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.bubble{position:absolute;border-radius:50%;background:radial-gradient(circle at 30% 30%, rgba(120,238,255,.5), rgba(43,217,242,.10) 60%, transparent 72%);border:1px solid rgba(43,217,242,.22);animation:rise linear infinite}
@keyframes rise{0%{transform:translateY(0) scale(1);opacity:0}10%{opacity:.7}90%{opacity:.45}100%{transform:translateY(-120vh) scale(1.15);opacity:0}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-13px)}}
@keyframes floatX{0%,100%{transform:translateY(0)}50%{transform:translateY(9px)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{0%{transform:scale(.85);opacity:.45}70%{opacity:0}100%{transform:scale(1.4);opacity:0}}
@keyframes blink{0%,60%,100%{opacity:.3}30%{opacity:1}}
@keyframes dash{to{stroke-dashoffset:-24}}

/* hero */
.hero{position:relative;padding:84px 0 96px;overflow:hidden}
.hero::before{content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);width:760px;height:760px;border-radius:50%;background:radial-gradient(circle, rgba(44,107,230,.16), transparent 62%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--blue);background:rgba(44,107,230,.07);border:1px solid rgba(44,107,230,.2);padding:7px 15px;border-radius:999px;margin-bottom:22px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.hero h1{font-size:clamp(38px,6vw,62px);margin-bottom:18px}
.hero p.lead{font-size:18px;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:30px;margin-top:44px;flex-wrap:wrap}
.hero-stats .s{display:flex;align-items:center;gap:10px}
.hero-stats .s .si{width:40px;height:40px;border-radius:12px;background:var(--tile);border:1px solid var(--border);display:grid;place-items:center;flex:none}
.hero-stats .s .si svg{width:20px;height:20px;stroke:var(--blue);fill:none;stroke-width:1.8}
.hero-stats .s b{display:block;font-family:"Vazirmatn";font-weight:700;color:var(--ink);font-size:14px}
.hero-stats .s span{font-size:12px;color:var(--muted)}
/* load-in */
.load{opacity:0;transform:translateY(20px);animation:loadin .7s cubic-bezier(.2,.7,.3,1) forwards}
.load.d1{animation-delay:.05s}.load.d2{animation-delay:.15s}.load.d3{animation-delay:.25s}.load.d4{animation-delay:.35s}.load.d5{animation-delay:.45s}
@keyframes loadin{to{opacity:1;transform:none}}

/* hero visual: chat card + floating chips + orbit */
.hero-visual{position:relative;animation:float 7s ease-in-out infinite}
.orbit{position:absolute;inset:-40px;z-index:-1;display:grid;place-items:center;pointer-events:none}
.orbit .ring{position:absolute;border-radius:50%;border:1px dashed rgba(44,107,230,.22)}
.orbit .r1{width:108%;height:108%;animation:spin 38s linear infinite}
.orbit .r2{width:128%;height:128%;animation:spin 52s linear infinite reverse}
.orbit .glow{position:absolute;width:60%;height:60%;border-radius:50%;background:radial-gradient(circle,rgba(43,217,242,.16),transparent 70%)}
.chat-card{position:relative;z-index:2;background:var(--surface);border:1px solid var(--border);border-radius:24px;overflow:hidden;box-shadow:0 34px 80px -36px rgba(23,52,99,.16)}
.chat-top{display:flex;align-items:center;gap:12px;padding:15px 18px;border-bottom:1px solid var(--border);background:var(--tile)}
.chat-top .av{width:42px;height:42px;flex:none;border-radius:50%;background:rgba(43,217,242,.12);border:1px solid var(--cyan);display:grid;place-items:center}
.chat-top .av svg{width:24px;height:24px;stroke:var(--blue);fill:none;stroke-width:1.7}
.chat-top .who{flex:1;display:flex;flex-direction:column}
.chat-top .who b{font-family:"Vazirmatn";font-weight:700;color:var(--ink);font-size:14px}
.chat-top .who span{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
.chat-top .who span i{width:7px;height:7px;border-radius:50%;background:var(--green);display:block;box-shadow:0 0 8px var(--green)}
.chat-top .model{font-size:11px;font-weight:600;color:var(--muted);background:var(--navy);border:1px solid var(--border);border-radius:8px;padding:5px 9px;white-space:nowrap}
.chat-body{padding:22px 18px;display:flex;flex-direction:column;gap:13px;min-height:236px}
.msg{max-width:82%;padding:11px 15px;font-size:13.5px;line-height:1.8}
.msg.bot{align-self:flex-start;background:var(--tile);border:1px solid var(--border);color:var(--text);border-radius:16px 16px 16px 5px}
.msg.user{align-self:flex-end;background:var(--blue);color:#fff;font-weight:600;border-radius:16px 16px 5px 16px}
.typing{align-self:flex-start;display:flex;gap:5px;padding:14px 16px;background:var(--tile);border:1px solid var(--border);border-radius:16px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
.chat-input{display:flex;align-items:center;gap:10px;padding:14px 18px;border-top:1px solid var(--border)}
.chat-input .fld{flex:1;background:var(--tile);border:1px solid var(--border);border-radius:999px;padding:11px 16px;font-size:13px;color:var(--muted)}
.chat-input .send{width:42px;height:42px;flex:none;border-radius:50%;background:var(--blue);display:grid;place-items:center;border:0;cursor:pointer;transition:.2s}
.chat-input .send:hover{background:var(--blue-dark)}
.chat-input .send svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2}
.fchip{position:absolute;z-index:3;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:11px 14px;display:flex;align-items:center;gap:10px;box-shadow:0 18px 40px -22px #000;font-family:"Vazirmatn"}
.fchip svg{width:22px;height:22px;flex:none}
.fchip b{display:block;font-size:13px;font-weight:700;color:var(--ink)}
.fchip span{font-size:11px;color:var(--muted)}
.fchip.a{top:-28px;right:-18px;animation:float 6s ease-in-out infinite}
.fchip.b{bottom:92px;left:-42px;animation:floatX 5.5s ease-in-out infinite}
.fchip.c{top:172px;left:-36px;animation:float 6.5s ease-in-out .6s infinite}

/* generic section */
section.block{padding:92px 0;position:relative}
.alt{background:var(--navy-2)}
.head{text-align:center;max-width:700px;margin:0 auto 54px}
.head .kick{color:var(--blue);font-weight:600;font-size:14px;margin-bottom:10px;font-family:"Vazirmatn"}
.head h2{font-size:clamp(28px,4vw,42px);margin-bottom:14px}
.head p{font-size:16px}

/* use-case strip */
.uses{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.use{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:10px 18px;transition:.2s;font-weight:600;color:var(--ink);font-size:14.5px}
.use:hover{border-color:var(--cyan);transform:translateY(-3px)}
.use svg{width:22px;height:22px;stroke:var(--blue);fill:none;stroke-width:1.7}

/* pillars */
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.pillar{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 28px;display:flex;gap:20px;align-items:flex-start;transition:.25s}
.pillar:hover{transform:translateY(-5px);border-color:var(--cyan)}
.pillar .pico{flex:none;width:60px;height:60px;border-radius:16px;background:var(--tile);border:1px solid var(--border);display:grid;place-items:center;transition:.25s}
.pillar:hover .pico{border-color:var(--cyan);background:rgba(43,217,242,.08)}
.pillar .pico svg{width:30px;height:30px;stroke:var(--blue);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.pillar.b .pico svg{stroke:var(--blue)}
.pillar h3{font-size:22px;margin-bottom:9px}
.pillar p{font-size:14.5px;color:var(--text);margin-bottom:14px}
.taglist{list-style:none;display:flex;flex-wrap:wrap;gap:7px}
.taglist li{font-size:12.5px;color:var(--text);background:var(--tile);border:1px solid var(--border-soft);border-radius:7px;padding:5px 10px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative}
.steps::before{content:"";position:absolute;top:64px;right:16%;left:16%;height:2px;background:repeating-linear-gradient(90deg,var(--border) 0 8px,transparent 8px 16px)}
.step{position:relative;text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:34px 24px;transition:.25s}
.step:hover{transform:translateY(-6px);border-color:var(--cyan)}
.step .num{position:absolute;top:18px;right:18px;font-family:"Lalezar";font-size:20px;color:var(--border)}
.step .ill{width:108px;height:108px;margin:0 auto 18px;display:grid;place-items:center;border-radius:50%;background:var(--tile);border:1px solid var(--border);position:relative}
.step .ill::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid var(--cyan);animation:pulse 2.6s ease-out infinite}
.step:nth-child(2) .ill::after{animation-delay:.5s}
.step:nth-child(3) .ill::after{animation-delay:1s}
.step .ill svg{width:54px;height:54px}
.step h3{font-size:21px;margin-bottom:8px}
.step p{font-size:14.5px}

/* flagship builder */
.flag{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.flag h2{font-size:clamp(26px,4vw,38px);margin-bottom:16px}
.flag .lead{font-size:16px;margin-bottom:24px;max-width:520px}
.ticks{list-style:none;display:grid;gap:14px}
.ticks li{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.ticks .ic{flex:none;width:26px;height:26px;border-radius:8px;background:rgba(43,217,242,.1);border:1px solid rgba(43,217,242,.3);display:grid;place-items:center;margin-top:4px}
.ticks .ic svg{width:14px;height:14px;stroke:var(--blue);fill:none;stroke-width:2.4}
.ticks b{color:var(--ink);font-weight:700}
.node-card{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:24px;box-shadow:0 30px 70px -36px rgba(23,52,99,.16)}
.node-card .vtitle{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.node-card .vtitle b{font-family:"Vazirmatn";font-weight:700;color:var(--ink);font-size:14px}
.node-card .vtitle .pills{display:flex;gap:6px}
.node-card .vtitle .pills i{width:9px;height:9px;border-radius:50%;display:block;opacity:.85}
.flow{width:100%;height:auto;display:block}
.node-box{fill:var(--tile);stroke:var(--border);stroke-width:1.4}
.node-box.cy{stroke:var(--blue)}.node-box.bl{stroke:var(--blue)}
.node-label{font-family:"Vazirmatn";font-weight:600;font-size:13px}
.wire{stroke:var(--border);stroke-width:2;fill:none}
.wire.live{stroke:var(--blue);stroke-dasharray:5 7;animation:dash 1.1s linear infinite}

/* feature grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;transition:.25s}
.card:hover{transform:translateY(-5px);border-color:var(--cyan)}
.card .ico{width:52px;height:52px;border-radius:14px;background:var(--tile);border:1px solid var(--border);display:grid;place-items:center;margin-bottom:18px;transition:.25s}
.card:hover .ico{border-color:var(--cyan);background:rgba(43,217,242,.08)}
.card .ico svg{width:26px;height:26px;stroke:var(--blue);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:21px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--text);margin-bottom:14px}

/* channels */
.chgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.channel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 16px;text-align:center;transition:.25s}
.channel:hover{transform:translateY(-6px);border-color:var(--cyan)}
.channel .ci{width:62px;height:62px;margin:0 auto 14px;border-radius:18px;background:var(--tile);border:1px solid var(--border);display:grid;place-items:center;transition:.25s}
.channel:hover .ci{border-color:var(--cyan);background:rgba(43,217,242,.08)}
.channel .ci svg{width:32px;height:32px}
.channel b{font-family:"Vazirmatn";font-weight:700;color:var(--ink);font-size:15px;display:block;margin-bottom:4px}
.channel span{font-size:12.5px;color:var(--muted)}

/* panel (api band) */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:10px;box-shadow:0 30px 70px -38px rgba(23,52,99,.16)}
.panel-inner{border:1px dashed var(--border);border-radius:16px;padding:24px}
.chiprow{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-family:"Vazirmatn";font-size:13px;font-weight:600;color:var(--ink);background:var(--tile);border:1px solid var(--border);border-radius:10px;padding:9px 13px;display:flex;align-items:center;gap:7px}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--cyan);display:block}
.chip.b i{background:var(--blue)}

/* cta */
.cta-inner{background:var(--surface);border:1px solid var(--border);border-radius:28px;padding:62px 40px;text-align:center;position:relative;overflow:hidden}
.cta-inner h2{font-size:clamp(28px,4vw,44px);margin-bottom:16px}
.cta-inner p{font-size:17px;max-width:560px;margin:0 auto 30px;position:relative;z-index:2}
.cta-inner .hero-actions{justify-content:center;position:relative;z-index:2}

/* footer */
footer{border-top:1px solid var(--border-soft);padding:60px 0 30px;background:var(--navy-2)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.foot-brand img{height:40px;margin-bottom:16px}
.foot-brand p{font-size:14px;color:var(--muted);max-width:320px}
footer h5{font-family:"Vazirmatn";font-weight:700;color:var(--ink);font-size:15px;margin-bottom:16px}
footer ul{list-style:none;display:grid;gap:11px}
footer ul a{font-size:14px;color:var(--text);transition:.2s}
footer ul a:hover{color:var(--cyan)}
.copy{border-top:1px solid var(--border-soft);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted)}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:.6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.in.s1{transition-delay:.08s}.reveal.in.s2{transition-delay:.16s}.reveal.in.s3{transition-delay:.24s}

@media(max-width:900px){
.hero-grid,.flag,.foot-grid{grid-template-columns:1fr}
.flag .node-card{order:-1}
.grid{grid-template-columns:1fr 1fr}
.pillars,.steps{grid-template-columns:1fr}
.steps::before{display:none}
.chgrid{grid-template-columns:repeat(3,1fr)}
.menu,.nav-cta .btn-ghost{display:none}
.menu.open{display:flex;position:absolute;top:74px;right:0;left:0;flex-direction:column;background:var(--navy-2);border-bottom:1px solid var(--border);padding:18px 24px;gap:14px}
.burger{display:flex}
.fchip.b{left:-10px}.fchip.c{display:none}
}
@media(max-width:560px){
.grid,.chgrid{grid-template-columns:1fr 1fr}
.hero{padding:56px 0 70px}
section.block{padding:66px 0}
.fchip.a,.fchip.b{display:none}
}
@media(prefers-reduced-motion:reduce){
*{animation:none!important}
.reveal{opacity:1;transform:none;transition:none}
.load{opacity:1;transform:none}
html{scroll-behavior:auto}
}

/* light-mode depth */
.card,.pillar,.step,.channel,.use,.cta-inner,.chat-card,.node-card,.panel,.fchip{box-shadow:0 14px 34px -24px rgba(23,52,99,.4)}
.chat-top{background:var(--soft)}
.step .ill::after{border-color:var(--blue);opacity:.5}
/* photos + waves + new sections */
.hero-visual{position:relative}
.hero-blob{position:absolute;inset:-14% -18%;z-index:-1;opacity:.6}
.hero-wave{position:absolute;left:0;bottom:-1px;width:100%;height:62px;z-index:3}
.photo{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--border);background:var(--img-bg);box-shadow:0 26px 54px -30px rgba(23,52,99,.5)}
.photo>img{display:block;width:100%;height:100%;object-fit:cover}
.why{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.why .photo{aspect-ratio:4/3}
.why h2{font-size:clamp(26px,4vw,38px);margin-bottom:16px}
.why .lead{font-size:16px;margin-bottom:22px;max-width:520px}
.pin{position:absolute;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:10px 13px;display:flex;align-items:center;gap:9px;box-shadow:0 16px 34px -18px rgba(23,52,99,.55);animation:float 6s ease-in-out infinite}
.pin svg{width:24px;height:24px;flex:none}
.pin b{display:block;font-family:"Vazirmatn";font-weight:700;color:var(--ink);font-size:13px}
.pin span{font-size:11px;color:var(--muted)}
.pin.tl{top:16px;right:16px}
.pin.br{bottom:16px;left:16px;animation-delay:.9s}
.pcards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.25s;box-shadow:0 14px 34px -24px rgba(23,52,99,.4)}
.pcard:hover{transform:translateY(-6px);border-color:var(--blue)}
.pcard .pim{aspect-ratio:16/10;overflow:hidden;background:var(--img-bg)}
.pcard .pim img{width:100%;height:100%;object-fit:cover;transition:.45s}
.pcard:hover .pim img{transform:scale(1.06)}
.pcard .pb{padding:22px}
.pcard .pb .tag{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--blue);background:rgba(44,107,230,.08);border-radius:999px;padding:5px 12px;margin-bottom:12px}
.pcard .pb .tag svg{width:14px;height:14px;stroke:var(--blue);fill:none;stroke-width:2}
.pcard h3{font-size:20px;margin-bottom:8px}
.pcard p{font-size:14px;color:var(--text)}
@media(max-width:900px){.why,.pcards{grid-template-columns:1fr}.why .photo{order:-1}}
/* section background effects */
section.fx{position:relative;overflow:hidden}
section.fx>.wrap{position:relative;z-index:1}
.fx::before{content:"";position:absolute;width:540px;height:540px;border-radius:50%;background:radial-gradient(circle,rgba(44,107,230,.13),transparent 65%);top:-180px;right:-140px;pointer-events:none}
.fx::after{content:"";position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(43,217,242,.13),transparent 65%);bottom:-180px;left:-140px;pointer-events:none}
.fx .dots{position:absolute;inset:0;background-image:radial-gradient(rgba(44,107,230,.16) 1px,transparent 1px);background-size:26px 26px;-webkit-mask-image:linear-gradient(180deg,transparent,#000 28%,#000 72%,transparent);mask-image:linear-gradient(180deg,transparent,#000 28%,#000 72%,transparent);opacity:.55;pointer-events:none}
/* card accents */
.card{position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;right:0;height:3px;width:0;background:var(--blue);transition:.35s}
.card:hover::before{width:100%}
.card:hover .ico{box-shadow:0 0 0 4px rgba(44,107,230,.1)}
/* code card (API) */
.code-card{background:#0C1A2F;border:1px solid #1d3556;border-radius:18px;overflow:hidden;box-shadow:0 28px 60px -30px rgba(8,20,40,.7)}
.code-top{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid #1d3556;background:#0a1626}
.code-top .dots3{display:flex;gap:6px}
.code-top .dots3 i{width:11px;height:11px;border-radius:50%;display:block}
.code-top .dots3 i:nth-child(1){background:#ff6b6b}.code-top .dots3 i:nth-child(2){background:#ffd166}.code-top .dots3 i:nth-child(3){background:#37e07a}
.code-top .ep{margin-left:auto;font:600 12px/1 ui-monospace,Menlo,Consolas,monospace;color:#7fa8d8;background:#11243d;border:1px solid #1d3556;border-radius:7px;padding:5px 9px;direction:ltr}
.code{margin:0;padding:18px 16px;font:13px/2 ui-monospace,Menlo,Consolas,monospace;color:#cfe0f5;white-space:pre-wrap;word-break:break-word;direction:ltr;text-align:left}
.code .ky{color:#2BD9F2}.code .st{color:#9be7a8}.code .cm{color:#5d7494}
.code-resp{display:flex;align-items:center;gap:10px;padding:12px 16px;border-top:1px solid #1d3556;font:13px/1.6 "Vazirmatn";color:#9fb4cf}
.code-resp .ok{font-weight:700;color:#0a1626;background:#37e07a;border-radius:6px;padding:3px 9px;font-family:ui-monospace,monospace;direction:ltr}
.code-pills{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 16px}
.code-pills .chip{background:#11243d;border-color:#1d3556;color:#cfe0f5}
/* theme toggle */
.theme-toggle{width:42px;height:42px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--ink);display:grid;place-items:center;cursor:pointer;transition:.2s;flex:none}
.theme-toggle:hover{border-color:var(--blue);color:var(--blue)}
.theme-toggle svg{width:20px;height:20px}
.ic-sun{display:none}.ic-moon{display:block}
[data-theme="dark"] .ic-sun{display:block}[data-theme="dark"] .ic-moon{display:none}
/* rich footer */
footer{position:relative;overflow:hidden}
.foot-top{display:grid;grid-template-columns:1.4fr 2.4fr;gap:48px;margin-bottom:40px}
.foot-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{width:40px;height:40px;border-radius:11px;border:1px solid var(--border);display:grid;place-items:center;color:var(--text);transition:.2s}
.socials a:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-3px)}
.socials svg{width:19px;height:19px}
.foot-news p{font-size:13px;color:var(--muted);margin-bottom:12px}
.news-form{display:flex;gap:8px}
.news-form .ipt{flex:1;background:var(--tile);border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:12.5px;color:var(--muted)}
.news-form .btn{padding:10px 16px;font-size:13px}
@media(max-width:900px){.foot-top{grid-template-columns:1fr;gap:32px}.foot-cols{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.news-form{flex-direction:column}}

/* استایل‌های اصلی برای نمایش در دارک‌مد */
.node-box {
  fill: #1e1e2f;        /* پس‌زمینهٔ جعبه‌ها */
  stroke: #4a6fa5;      /* کادر دور جعبه */
  stroke-width: 2;
}
.node-box.bl {
  fill: #1a2b4c;        /* جعبهٔ آبی‌تر */
  stroke: #2C6BE6;
}
.node-box.cy {
  fill: #0e3b4a;        /* جعبهٔ فیروزه‌ای */
  stroke: #2BD9F2;
}
.node-label {
  fill: #f0f4ff;        /* رنگ متن روشن */
  font-size: 13px;
  font-family: sans-serif;
  font-weight: 500;
  dominant-baseline: central;
}
.wire {
  fill: none;
  stroke: #5b6f87;
  stroke-width: 3;
  stroke-linecap: round;
}
.wire.live {
  stroke: #2BD9F2;      /* خطوط فعال به رنگ فیروزه‌ای */
  stroke-width: 3.5;
}
/* دایره‌های کوچک (نقاط اتصال) */
svg circle {
  stroke: #1e1e2f;
  stroke-width: 1.5;
}
.node-label{
  font-family: Vazirmatn;
}