/* SchoolFlow - shared stylesheet */

:root{
  --bg:#eef2fb;
  --bg-alt:#ffffff;
  --bg-deep:#e6ecf9;
  --surface:rgba(255,255,255,.75);
  --line:rgba(20,40,90,.10);
  --line-soft:rgba(20,40,90,.06);
  --txt:#0f1b34;
  --txt-soft:#3b4a68;
  --muted:#5a6b88;
  --accent:#4f7cff;
  --accent-2:#7c5cff;
  --accent-soft:rgba(79,124,255,.12);
  --accent-deep:#3a63e0;
  --green:#10b981;
  --gold:#b4801c;
  --header-bg:rgba(255,255,255,.72);
  --glow-op:.22;
  --radius:18px;
  --radius-sm:12px;
  --maxw:1160px;
  --serif:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  --sans:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  --shadow:0 24px 60px -24px rgba(40,60,120,.35);
}

:root[data-theme="dark"]{
  --bg:#0b1120;
  --bg-alt:#0f172a;
  --bg-deep:#080d19;
  --surface:rgba(255,255,255,.04);
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --txt:#e6edf7;
  --txt-soft:#c2cee2;
  --muted:#93a4c0;
  --accent:#5b8cff;
  --accent-2:#7c5cff;
  --accent-soft:rgba(91,140,255,.16);
  --accent-deep:#7ea3ff;
  --green:#22d3a7;
  --gold:#d8b45c;
  --header-bg:rgba(11,17,32,.62);
  --glow-op:.5;
  --shadow:0 20px 60px -20px rgba(0,0,0,.6);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--txt);
  line-height:1.65;
  font-size:16.5px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s;
}
body::before,body::after{
  content:"";position:fixed;border-radius:50%;filter:blur(130px);
  opacity:var(--glow-op);z-index:-1;pointer-events:none
}
body::before{width:600px;height:600px;background:var(--accent);top:-220px;left:-120px}
body::after{width:520px;height:520px;background:var(--accent-2);top:120px;right:-160px;opacity:calc(var(--glow-op) * .8)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
svg{flex:none}
[hidden]{display:none!important}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%}
.narrow{max-width:820px;margin:0 auto}

h1,h2,h3,h4{font-family:var(--serif);font-weight:800;letter-spacing:-.7px;line-height:1.18}
h1{font-size:clamp(2.05rem,4.6vw,3.5rem);line-height:1.08;letter-spacing:-1.4px}
h2{font-size:clamp(1.65rem,3.3vw,2.5rem);letter-spacing:-1px}
h3{font-size:1.16rem;letter-spacing:-.3px}
p{color:var(--txt-soft)}
.grad{
  background:linear-gradient(90deg,var(--accent),var(--green));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent
}

.eyebrow{
  font-family:var(--sans);font-size:.78rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--green);margin-bottom:12px
}
.rule{height:1px;background:var(--line);border:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--header-bg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);transition:background .3s;
}
.site-header .bar{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--serif);font-weight:800;font-size:1.24rem;letter-spacing:-.4px}
.brand img{width:38px;height:38px;border-radius:11px;box-shadow:0 8px 20px -8px var(--accent)}
.brand .b2{background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;align-items:center;gap:26px}
.nav a{font-size:.93rem;color:var(--muted);font-weight:500;padding:6px 0;border-bottom:2px solid transparent;transition:color .18s,border-color .18s}
.nav a:hover{color:var(--txt)}
.nav a[aria-current="page"]{color:var(--txt);border-bottom-color:var(--accent)}
.head-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:var(--surface);color:var(--txt);display:grid;place-items:center;cursor:pointer;transition:.18s
}
.icon-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.burger{display:none}
:root[data-theme="dark"] .i-moon{display:none}
:root:not([data-theme="dark"]) .i-sun{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;font-family:var(--sans);
  transition:transform .18s ease,box-shadow .2s ease,filter .2s;line-height:1.2
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  box-shadow:0 12px 28px -10px var(--accent)
}
.btn-primary:hover{filter:brightness(1.06)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--txt)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:10px 18px;font-size:.88rem}
.btn-block{width:100%}

/* download buttons */
.dl-row{display:flex;gap:14px;flex-wrap:wrap}
.dl-btn{
  display:flex;align-items:center;gap:14px;padding:14px 22px;min-width:250px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);
  box-shadow:var(--shadow);transition:transform .18s,border-color .2s
}
.dl-btn:hover{border-color:var(--accent);transform:translateY(-3px)}
.dl-btn .ic{width:34px;height:34px;display:grid;place-items:center;color:var(--accent)}
.dl-btn .tx{display:flex;flex-direction:column;line-height:1.3}
.dl-btn .tx small{font-size:.73rem;color:var(--muted);letter-spacing:.02em}
.dl-btn .tx strong{font-size:1rem;font-weight:650}

/* ---------- sections ---------- */
section{padding:78px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:660px;margin:0 auto 46px;text-align:center}
.sec-head p{color:var(--muted);margin-top:12px;font-size:1.03rem}
.sec-head.left{margin-left:0;text-align:left}

/* ---------- hero ---------- */
.hero{padding:64px 0 54px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.badge-line{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border:1px solid var(--line);
  border-radius:999px;background:var(--surface);margin-bottom:22px;
  font-size:.76rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);
  white-space:nowrap;max-width:100%
}
.badge-line .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);flex:none}
.hero p.lead{font-size:1.09rem;color:var(--muted);margin:18px 0 28px;max-width:540px}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:26px;color:var(--muted);font-size:.83rem;font-weight:600;letter-spacing:.04em}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row svg{color:var(--accent)}

/* ---------- phone mockup ---------- */
.device-wrap{
  --scale:1;
  display:flex;justify-content:center;align-items:flex-start;
  height:calc(624px * var(--scale));
  width:calc(300px * var(--scale));
  margin:0 auto;
}
.device{
  width:300px;height:624px;flex:none;
  transform:scale(var(--scale));transform-origin:top center;
  border-radius:44px;padding:11px;position:relative;
  background:linear-gradient(165deg,#2b3346,#141a26);
  box-shadow:0 40px 70px -40px rgba(16,26,48,.75),0 0 0 1px rgba(255,255,255,.08) inset;
}
.device .side{position:absolute;right:-2px;width:3px;border-radius:3px;background:#3a4457}
.device .side.a{top:132px;height:56px}
.device .side.b{top:200px;height:56px}
.device .screen{
  position:relative;width:100%;height:100%;border-radius:34px;overflow:hidden;
  background:#0e1420;display:flex;flex-direction:column;color:#e8edf7
}
.device .notch{
  position:absolute;top:0;left:50%;transform:translateX(-50%);width:112px;height:26px;
  background:#000;border-radius:0 0 15px 15px;z-index:6
}
.app-status{
  display:flex;justify-content:space-between;align-items:center;padding:9px 20px 4px;
  font-size:.62rem;color:#cfd8ea;letter-spacing:.04em;font-weight:600
}
.app-top{padding:16px 18px 20px;background:linear-gradient(140deg,#2d5bff,#6d4bff);color:#fff}
.app-top .hi{font-size:.72rem;opacity:.85;letter-spacing:.05em;text-transform:uppercase}
.app-top .nm{font-family:var(--serif);font-size:1.16rem;font-weight:700;margin-top:3px}
.app-stats{display:flex;gap:8px;padding:0 14px;margin-top:-16px}
.app-stats .s{
  flex:1;min-width:0;background:#182130;border:1px solid #26314a;border-radius:10px;
  padding:10px 6px;text-align:center
}
.app-stats .s b{display:block;font-size:.98rem;font-weight:700;color:#fff;white-space:nowrap}
.app-stats .s small{font-size:.58rem;color:#93a3c0;letter-spacing:.04em}
.app-feed{padding:14px;display:flex;flex-direction:column;gap:9px;flex:1;overflow:hidden}
.app-feed .li{
  display:flex;align-items:center;gap:10px;background:#161e2c;border:1px solid #232d42;
  border-radius:10px;padding:10px
}
.app-feed .li .av{
  width:30px;height:30px;flex:none;border-radius:8px;display:grid;place-items:center;
  background:#1f2b45;color:#8fb0ff
}
.app-feed .li .tx{flex:1;min-width:0}
.app-feed .li .tx b{display:block;font-size:.76rem;font-weight:650;color:#eef2fa}
.app-feed .li .tx small{font-size:.63rem;color:#8b99b5;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.app-feed .li .bd{font-size:.56rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 7px;border-radius:999px;background:#12352a;color:#54d3a0;flex:none}
.app-feed .li .bd.blue{background:#132747;color:#7fa9ff}
.app-toast{
  position:absolute;left:14px;right:14px;bottom:16px;z-index:5;
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;
  background:rgba(20,28,44,.96);border:1px solid #2c3852;box-shadow:0 14px 30px -14px rgba(0,0,0,.9)
}
.app-toast .ci{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:#12352a;color:#54d3a0;flex:none}
.app-toast b{font-size:.74rem;display:block;color:#eef2fa}
.app-toast small{font-size:.63rem;color:#8b99b5}

/* phone animations */
.app-top .hi,.app-top .nm{animation:sf-rise .7s ease-out both}
.app-top .nm{animation-delay:.1s}
.app-stats .s{animation:sf-rise .6s ease-out both}
.app-stats .s:nth-child(1){animation-delay:.2s}
.app-stats .s:nth-child(2){animation-delay:.3s}
.app-stats .s:nth-child(3){animation-delay:.4s}
.app-feed .li{animation:sf-slide 9s ease-in-out infinite both}
.app-feed .li:nth-child(1){animation-delay:.5s}
.app-feed .li:nth-child(2){animation-delay:.7s}
.app-feed .li:nth-child(3){animation-delay:.9s}
.app-feed .li:nth-child(4){animation-delay:1.1s}
.app-toast{animation:sf-toast 9s ease-in-out infinite both}

@keyframes sf-rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes sf-slide{
  0%{opacity:0;transform:translateY(16px)}
  8%,72%{opacity:1;transform:none}
  84%,100%{opacity:0;transform:translateY(-12px)}
}
@keyframes sf-toast{
  0%,10%{opacity:0;transform:translateY(26px)}
  20%,55%{opacity:1;transform:none}
  68%,100%{opacity:0;transform:translateY(26px)}
}

@media (prefers-reduced-motion:reduce){
  .app-feed .li,.app-toast,.app-top .hi,.app-top .nm,.app-stats .s{animation:none!important;opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}

/* ---------- trust strip ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-alt)}
.trust .wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;padding-top:26px;padding-bottom:26px}
.stat{text-align:center}
.stat b{
  display:block;font-family:var(--serif);font-size:1.85rem;font-weight:800;letter-spacing:-.5px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent
}
.stat small{color:var(--muted);font-size:.79rem;letter-spacing:.04em}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:border-color .2s,transform .2s,background .2s
}
.card:hover{transform:translateY(-6px);border-color:rgba(91,140,255,.5);background:var(--accent-soft)}
.card .ic{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(91,140,255,.2),rgba(124,92,255,.2));
  border:1px solid var(--line);color:var(--accent);margin-bottom:16px
}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:.94rem}
.card ul{margin:14px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}
.card ul li{display:flex;gap:9px;font-size:.9rem;color:var(--muted)}
.card ul li svg{color:var(--accent);margin-top:4px}

/* numbered steps */
.step{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px}
.step .n{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;margin-bottom:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  font-weight:800;font-size:.95rem
}
.step h4{font-size:1.02rem;margin-bottom:6px}
.step p{color:var(--muted);font-size:.89rem}

/* ---------- feature detail rows ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:46px 0;border-bottom:1px solid var(--line-soft)}
.feature-row:last-child{border-bottom:0}
.feature-row.flip .fr-media{order:-1}
.feature-row h3{font-size:1.5rem;margin:10px 0 12px}
.feature-row p{color:var(--muted)}
.feature-row ul{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:10px}
.feature-row ul li{display:flex;gap:10px;font-size:.94rem;color:var(--txt-soft)}
.feature-row ul li svg{color:var(--accent);margin-top:4px;flex:none}
.fr-media{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  display:flex;flex-direction:column;gap:12px
}
.mini{
  display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:13px 15px
}
.mini .mi{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);flex:none}
.mini b{font-size:.88rem;display:block}
.mini small{font-size:.76rem;color:var(--muted)}
.mini .val{margin-left:auto;font-weight:700;font-size:.92rem;font-family:var(--serif)}

/* ---------- tables / spec ---------- */
.spec{list-style:none;margin:20px 0}
.spec li{display:flex;justify-content:space-between;gap:16px;font-size:.92rem;padding:11px 0;border-bottom:1px solid var(--line-soft)}
.spec li span:first-child{color:var(--muted)}
.spec li span:last-child{font-weight:600;text-align:right}
.note{font-size:.79rem;color:var(--muted);text-align:center;margin-top:14px}

/* ---------- pricing ---------- */
.price-card{
  background:linear-gradient(135deg,rgba(91,140,255,.12),rgba(124,92,255,.10));
  border:1px solid var(--line);border-radius:26px;
  padding:46px 40px;text-align:center;box-shadow:var(--shadow);max-width:640px;margin:0 auto
}
.ribbon{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:rgba(16,185,129,.15);color:var(--green);font-size:.76rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;margin-bottom:18px
}
.amount{font-family:var(--serif);font-size:clamp(2.6rem,7vw,4rem);font-weight:800;letter-spacing:-2px;line-height:1}
.amount span{font-family:var(--sans);font-size:.95rem;color:var(--muted);font-weight:600}
.price-list{list-style:none;max-width:400px;margin:26px auto;text-align:left;display:flex;flex-direction:column;gap:11px}
.price-list li{display:flex;gap:11px;font-size:.95rem;color:var(--txt-soft)}
.price-list li svg{color:var(--accent);margin-top:4px;flex:none}
.price-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- roadmap ---------- */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{position:relative;padding:0 0 34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--bg);border:2px solid var(--line)
}
.tl-item.done::before{background:var(--accent);border-color:var(--accent)}
.tl-item.active::before{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.tl-item h4{font-size:1.1rem;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.tl-item p{color:var(--muted);font-size:.94rem}
.tag{
  font-size:.63rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-family:var(--sans)
}
.tag.now{background:rgba(16,185,129,.15);color:var(--green);border-color:transparent}
.tag.next{background:rgba(91,140,255,.15);color:var(--accent);border-color:transparent}
.tag.later{background:rgba(124,92,255,.15);color:var(--accent-2);border-color:transparent}
.tag.shipped{background:rgba(16,185,129,.15);color:var(--green);border-color:transparent}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;padding:18px 40px 18px 0;font-weight:600;list-style:none;position:relative;font-size:1rem
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{color:var(--muted);padding:0 0 20px;font-size:.95rem;max-width:720px}

/* ---------- page hero ---------- */
.page-head{padding:56px 0 44px;border-bottom:1px solid var(--line);background:var(--bg-alt)}
.page-head h1{font-size:clamp(1.9rem,4vw,2.8rem)}
.page-head p{color:var(--muted);margin-top:14px;max-width:620px;font-size:1.05rem}
.crumb{font-size:.78rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.crumb a:hover{color:var(--accent)}

/* ---------- CTA ---------- */
.cta{background:transparent;padding-bottom:82px}
.cta-inner{
  text-align:center;max-width:900px;margin:0 auto;
  background:linear-gradient(135deg,rgba(91,140,255,.15),rgba(124,92,255,.12));
  border:1px solid var(--line);border-radius:28px;padding:54px 38px
}
.cta-inner p{color:var(--muted);margin:14px auto 26px;max-width:560px}
.cta .dl-row{justify-content:center}

/* ---------- contact ---------- */
.contact-card{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:.18s}
.contact-card:hover{border-color:var(--accent)}
.contact-card .ci{width:42px;height:42px;border-radius:var(--radius);background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex:none}
.contact-card b{display:block;font-size:.98rem}
.contact-card small{color:var(--muted);font-size:.85rem}

/* ---------- blog ---------- */
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;transition:border-color .18s,box-shadow .18s
}
.post-card:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.post-card .cat{font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.post-card h3{font-size:1.1rem;line-height:1.32;margin-bottom:9px}
.post-card p{color:var(--muted);font-size:.91rem;flex:1}
.post-card .more{margin-top:16px;font-size:.87rem;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:7px}

.article{max-width:760px;margin:0 auto;padding:56px 0 20px}
.article .meta{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.article h1{font-size:clamp(1.75rem,4vw,2.55rem);margin-bottom:22px}
.article h3{font-size:1.2rem;margin:32px 0 10px}
.article p{margin-bottom:16px;font-size:1.03rem;color:var(--txt-soft)}
.article ul{margin:0 0 18px 20px;color:var(--txt-soft);display:flex;flex-direction:column;gap:8px}
.article a.inline{color:var(--accent);font-weight:600;border-bottom:1px solid transparent}
.article a.inline:hover{border-bottom-color:var(--accent)}
.cta-inline{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;margin:30px 0 10px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:14px
}
.cta-inline b{font-size:1rem;display:block}
.cta-inline small{color:var(--muted)}
.article-nav{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:36px;padding-top:22px;font-size:.9rem
}
.article-nav a{color:var(--muted)}
.article-nav a:hover{color:var(--accent)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-alt);padding:52px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.foot-grid .col h5{font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;color:var(--muted);margin-bottom:14px;font-family:var(--sans);font-weight:700}
.foot-grid .col a{display:block;color:var(--muted);font-size:.9rem;margin-bottom:9px;transition:.18s}
.foot-grid .col a:hover{color:var(--accent)}
.foot-about p{color:var(--muted);font-size:.9rem;max-width:290px;margin-top:12px}
.foot-bot{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:.84rem
}
.foot-bot .links{display:flex;gap:18px;flex-wrap:wrap}
.foot-bot .links a:hover{color:var(--accent)}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:44px;text-align:center;justify-items:center}
  .hero p.lead{margin-left:auto;margin-right:auto}
  .hero .dl-row,.hero .meta-row{justify-content:center}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:28px}
  .feature-row.flip .fr-media{order:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav{
    display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;
    align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);
    padding:8px 24px 18px;box-shadow:var(--shadow)
  }
  .nav.open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line-soft);border-left:0}
  .nav a[aria-current="page"]{color:var(--accent)}
  .burger{display:grid}
}

@media (max-width:760px){
  .trust .wrap{grid-template-columns:repeat(3,1fr);gap:22px 12px}
  .grid-2{grid-template-columns:1fr}
}

@media (max-width:640px){
  body{font-size:16px}
  section{padding:56px 0}
  .hero{padding:40px 0 42px}
  .wrap{padding:0 18px}
  .badge-line{font-size:min(2.8vw,.74rem);letter-spacing:.05em;padding:6px 12px;gap:7px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .card{padding:24px}
  .device-wrap{--scale:.84}
  .price-card{padding:34px 22px}
  .price-actions{flex-direction:column}
  .price-actions .btn{width:100%}
  .dl-btn{min-width:100%}
  .foot-bot{flex-direction:column;align-items:flex-start}
  .page-head{padding:40px 0 34px}
}

@media (max-width:560px){
  .head-actions .btn{display:none}
}

@media (max-width:430px){
  .trust .wrap{grid-template-columns:repeat(2,1fr)}
  .device-wrap{--scale:.78}
  .badge-line{letter-spacing:.03em}
  .brand{font-size:1.1rem}
  .brand img{width:32px;height:32px}
  .foot-grid{grid-template-columns:1fr}
}

@media (max-width:360px){
  .device-wrap{--scale:.68}
}