/* =========================================================
   stakemines.ca — design system
   Concept: underground vault / digital minefield (CA)
   ========================================================= */

:root{
  /* base */
  --bg:#0c0f13;
  --bg-2:#0f141a;
  --panel:#141a20;
  --panel-2:#192129;
  --line:#243038;
  --line-soft:#1c252d;

  /* text */
  --text:#e8eef2;
  --muted:#9bacb8;
  --dim:#6f8190;

  /* accents */
  --emerald:#26e0a0;
  --cyan:#37cdfd;
  --gold:#e3b341;
  --red:#ff5f6d;

  --emerald-soft:rgba(38,224,160,.12);
  --cyan-soft:rgba(55,205,253,.12);
  --gold-soft:rgba(227,179,65,.12);
  --red-soft:rgba(255,95,109,.12);

  /* type */
  --f-head:'Sora',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --f-body:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;

  /* layout */
  --maxw:1140px;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px var(--line), 0 14px 34px -20px rgba(0,0,0,.9);
  --ring:0 0 0 3px rgba(55,205,253,.35);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  font-size:16px;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 480px at 88% -8%, rgba(55,205,253,.10), transparent 60%),
    radial-gradient(760px 520px at 6% 4%, rgba(38,224,160,.08), transparent 55%),
    linear-gradient(180deg,#0b0e12,#0c0f13 40%);
  background-attachment:fixed;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--f-head);line-height:1.18;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5.2vw,3.25rem)}
h2{font-size:clamp(1.5rem,3.4vw,2.1rem)}
h3{font-size:clamp(1.15rem,2.2vw,1.4rem)}
p{margin:0 0 1rem}
ul,ol{margin:0 0 1rem;padding-left:1.2rem}
li{margin:.3rem 0}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:6px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:54px 0}
.section-tight{padding:34px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--f-head);font-size:.72rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--emerald);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--emerald);opacity:.7}
.lead{font-size:1.08rem;color:var(--muted);max-width:62ch}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.maple{color:var(--red);font-weight:700}

/* ============ Skip link ============ */
.skip{position:absolute;left:-999px;top:0;background:var(--emerald);color:#04130d;padding:10px 16px;border-radius:8px;z-index:200}
.skip:focus{left:12px;top:12px}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  backdrop-filter:blur(10px);
  background:rgba(10,13,17,.82);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:26px;width:auto}
.nav{display:flex;align-items:center;gap:4px}
.nav a{
  color:var(--muted);font-size:.92rem;font-weight:500;padding:9px 12px;border-radius:8px;
  transition:color .15s,background .15s;
}
.nav a:hover{color:var(--text);background:var(--panel);text-decoration:none}
.nav a.active{color:var(--text)}
.nav a.active::after{content:"";display:block;height:2px;margin-top:5px;border-radius:2px;
  background:linear-gradient(90deg,var(--emerald),var(--cyan))}
.nav .btn{display:none}
.header-cta{display:flex;align-items:center;gap:10px}

/* hamburger */
.menu-btn{
  display:none;background:var(--panel);border:1px solid var(--line);
  width:44px;height:44px;border-radius:10px;cursor:pointer;
  align-items:center;justify-content:center;
}
.menu-btn span{display:block;width:20px;height:2px;background:var(--text);position:relative;transition:.2s}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);transition:.2s}
.menu-btn span::before{top:-6px}.menu-btn span::after{top:6px}
.menu-btn[aria-expanded="true"] span{background:transparent}
.menu-btn[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.menu-btn[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--f-head);font-weight:600;font-size:.95rem;
  padding:13px 22px;border-radius:12px;cursor:pointer;border:1px solid transparent;
  transition:transform .15s,box-shadow .2s,background .2s;text-decoration:none;
  -webkit-clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(135deg,var(--emerald),#16b988);
  color:#03140d;box-shadow:0 0 0 1px rgba(38,224,160,.5),0 12px 30px -14px rgba(38,224,160,.75);
}
.btn-primary:hover{box-shadow:0 0 0 1px rgba(38,224,160,.8),0 16px 34px -12px rgba(38,224,160,.85)}
.btn-ghost{
  background:var(--panel);color:var(--text);border:1px solid var(--line);
}
.btn-ghost:hover{border-color:var(--cyan);box-shadow:0 0 0 1px rgba(55,205,253,.4)}
.btn-gold{background:linear-gradient(135deg,var(--gold),#c8962a);color:#1a1304}
.btn-sm{padding:9px 15px;font-size:.85rem}
.btn-block{display:flex;width:100%;justify-content:center}
.btn .arr{transition:transform .15s}
.btn:hover .arr{transform:translateX(3px)}

/* ============ Hero ============ */
.hero{position:relative;padding:64px 0 30px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{margin-bottom:18px}
.hero h1 .accent{
  background:linear-gradient(120deg,var(--emerald),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{margin-bottom:26px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust-chip{
  display:inline-flex;align-items:center;gap:7px;font-size:.8rem;color:var(--muted);
  background:var(--panel);border:1px solid var(--line-soft);border-radius:999px;padding:6px 13px;
}
.trust-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--emerald)}
.trust-chip.cy .dot{background:var(--cyan)}
.trust-chip.gd .dot{background:var(--gold)}

/* hero visual: 5x5 mines grid */
.minefield{
  position:relative;background:
    radial-gradient(120% 120% at 50% 0%, rgba(55,205,253,.10), transparent 60%),
    var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow);
}
.minefield::before{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:repeating-linear-gradient(0deg,transparent 0 26px,rgba(255,255,255,.02) 26px 27px),
  repeating-linear-gradient(90deg,transparent 0 26px,rgba(255,255,255,.02) 26px 27px);
  pointer-events:none}
.mf-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;position:relative}
.mf-head .t{font-family:var(--f-head);font-weight:600;font-size:.85rem;color:var(--muted)}
.mf-head .m{font-family:var(--f-head);font-weight:700;color:var(--gold);font-size:.95rem}
.tile-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;position:relative}
.tile{
  aspect-ratio:1/1;border-radius:10px;border:1px solid var(--line);
  background:linear-gradient(160deg,#1b232b,#121821);
  display:flex;align-items:center;justify-content:center;
  position:relative;transition:transform .18s,box-shadow .2s,border-color .2s;
}
.tile svg{width:54%;height:54%}
.tile.safe{border-color:rgba(38,224,160,.5);background:linear-gradient(160deg,rgba(38,224,160,.16),#10201a);
  box-shadow:inset 0 0 18px rgba(38,224,160,.18)}
.tile.mine{border-color:rgba(255,95,109,.5);background:linear-gradient(160deg,rgba(255,95,109,.16),#211214);
  box-shadow:inset 0 0 18px rgba(255,95,109,.16)}
.tile.hot:hover{transform:translateY(-3px);border-color:var(--cyan);box-shadow:0 0 0 1px rgba(55,205,253,.5)}
.mf-foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;position:relative;font-size:.8rem;color:var(--dim)}
.mf-foot b{color:var(--emerald)}

/* ============ Panels / cards ============ */
.panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-glow);
}
.panel-quiet{background:var(--bg-2);border:1px solid var(--line-soft);border-radius:var(--radius);padding:22px}
.grid{display:grid;gap:18px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
/* staggered feature layout */
.stagger{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}
.stagger .tall{grid-row:span 2}

.card{
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:transform .18s,border-color .2s,box-shadow .2s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-3px);border-color:rgba(55,205,253,.4);box-shadow:0 18px 40px -26px rgba(55,205,253,.5)}
.card .ic{
  width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;border:1px solid var(--line);background:var(--panel-2)
}
.card .ic svg{width:22px;height:22px}
.card h3{font-size:1.12rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:0}
.card .more{display:inline-block;margin-top:12px;font-size:.85rem;font-weight:600;font-family:var(--f-head)}
.card-emerald{border-top:2px solid var(--emerald)}
.card-cyan{border-top:2px solid var(--cyan)}
.card-gold{border-top:2px solid var(--gold)}

/* quick answer box */
.quick{
  border-left:3px solid var(--cyan);background:var(--cyan-soft);
  border-radius:0 var(--radius) var(--radius) 0;padding:18px 20px;
}
.quick.qa-em{border-color:var(--emerald);background:var(--emerald-soft)}
.quick.qa-gd{border-color:var(--gold);background:var(--gold-soft)}
.quick h3{font-size:1rem;margin-bottom:6px;color:var(--text)}
.quick p{margin-bottom:0;color:var(--muted);font-size:.95rem}

/* safe vs mine comparison */
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:0;align-items:stretch;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.compare .col{padding:22px}
.compare .col.safe-col{background:linear-gradient(180deg,rgba(38,224,160,.10),transparent)}
.compare .col.mine-col{background:linear-gradient(180deg,rgba(255,95,109,.10),transparent)}
.compare .vs{display:flex;align-items:center;justify-content:center;padding:0 6px;
  font-family:var(--f-head);font-weight:700;color:var(--dim);background:var(--bg-2);border-left:1px solid var(--line);border-right:1px solid var(--line)}
.compare h3{display:flex;align-items:center;gap:10px;font-size:1.05rem}
.compare .badge{font-size:.7rem;padding:3px 8px;border-radius:6px;font-family:var(--f-head);font-weight:700}
.compare .safe-col .badge{background:var(--emerald-soft);color:var(--emerald)}
.compare .mine-col .badge{background:var(--red-soft);color:var(--red)}
.compare ul{margin:0;padding-left:1.1rem;color:var(--muted);font-size:.93rem}

/* callout strip */
.strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  background:linear-gradient(120deg,rgba(38,224,160,.10),rgba(55,205,253,.08));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 28px;
}
.strip h2{margin-bottom:6px}
.strip p{margin-bottom:0;color:var(--muted);max-width:60ch}

/* stat row */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:var(--bg-2);border:1px solid var(--line-soft);border-radius:var(--radius);padding:18px;text-align:center}
.stat .n{font-family:var(--f-head);font-weight:700;font-size:1.6rem;color:var(--emerald)}
.stat .l{font-size:.8rem;color:var(--muted);margin-top:4px}

/* ============ Breadcrumbs ============ */
.crumbs{padding:16px 0 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;font-size:.82rem;color:var(--dim)}
.crumbs li{display:flex;gap:8px;align-items:center;margin:0}
.crumbs li+li::before{content:"›";color:var(--line)}
.crumbs a{color:var(--muted)}
.crumbs [aria-current]{color:var(--text)}

/* ============ Tables ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;min-width:520px;font-size:.93rem}
caption{caption-side:top;text-align:left;color:var(--dim);font-size:.82rem;padding:12px 16px 0}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-soft)}
thead th{background:var(--panel-2);font-family:var(--f-head);font-size:.8rem;letter-spacing:.04em;
  text-transform:uppercase;color:var(--muted)}
tbody tr:hover{background:rgba(55,205,253,.04)}
tbody tr:last-child td{border-bottom:none}
td .pos{color:var(--emerald);font-weight:600}
td .neg{color:var(--red);font-weight:600}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden;
  transition:border-color .2s}
.faq-item.open{border-color:rgba(38,224,160,.45)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;color:var(--text);
  font-family:var(--f-head);font-weight:600;font-size:1rem;padding:18px 52px 18px 20px;position:relative;
}
.faq-q::after{content:"";position:absolute;right:20px;top:50%;width:11px;height:11px;
  border-right:2px solid var(--emerald);border-bottom:2px solid var(--emerald);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s}
.faq-item.open .faq-q::after{transform:translateY(-30%) rotate(-135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 20px 18px;color:var(--muted);font-size:.95rem}
.faq-a-inner p:last-child{margin-bottom:0}

/* ============ Promo / copy code ============ */
.promo-box{
  background:linear-gradient(140deg,var(--panel),#10171e);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;text-align:center;
  box-shadow:0 0 0 1px rgba(38,224,160,.18),var(--shadow);
}
.promo-box .label{font-family:var(--f-head);font-size:.75rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.code-field{
  display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;justify-content:center;margin:16px 0 10px;
}
.code-val{
  flex:1;min-width:180px;display:flex;align-items:center;justify-content:center;
  font-family:var(--f-head);font-weight:800;font-size:1.5rem;letter-spacing:.08em;color:var(--text);
  background:#0b1016;border:1px dashed var(--emerald);border-radius:12px;padding:14px 18px;
}
.copy-btn{white-space:nowrap}
.copy-btn.copied{background:linear-gradient(135deg,var(--cyan),#1f9fd6);color:#04141c}
.copy-note{font-size:.8rem;color:var(--dim);margin:0}

/* ============ Trust / disclaimer blocks ============ */
.trust-block{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--bg-2);border:1px solid var(--line-soft);border-left:3px solid var(--gold);
  border-radius:var(--radius);padding:18px 20px;
}
.trust-block.rg{border-left-color:var(--emerald)}
.trust-block.age{border-left-color:var(--red)}
.trust-block .ic{flex-shrink:0;width:34px;height:34px;display:flex;align-items:center;justify-content:center;
  border-radius:9px;background:var(--panel);border:1px solid var(--line)}
.trust-block .ic svg{width:18px;height:18px}
.trust-block p{margin:0;font-size:.9rem;color:var(--muted)}
.trust-block strong{color:var(--text)}

/* steps */
.steps{counter-reset:s;display:grid;gap:14px}
.step{display:flex;gap:16px;background:var(--bg-2);border:1px solid var(--line-soft);border-radius:var(--radius);padding:18px 20px}
.step::before{counter-increment:s;content:counter(s);flex-shrink:0;
  width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-family:var(--f-head);font-weight:700;color:#04140d;background:linear-gradient(135deg,var(--emerald),var(--cyan))}
.step h3{font-size:1.02rem;margin-bottom:4px}
.step p{margin:0;color:var(--muted);font-size:.93rem}

/* pills / tags */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 6px}
.tag{font-size:.78rem;color:var(--muted);background:var(--panel-2);border:1px solid var(--line-soft);
  border-radius:999px;padding:5px 11px;font-family:var(--f-head)}

/* calculator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.calc .controls{display:grid;gap:18px}
.field label{display:block;font-family:var(--f-head);font-weight:600;font-size:.85rem;margin-bottom:8px;color:var(--muted)}
.field .val{float:right;color:var(--emerald);font-weight:700}
input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:6px;border-radius:6px;
  background:linear-gradient(90deg,var(--emerald),var(--cyan));outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:#0c0f13;border:2px solid var(--cyan);cursor:pointer;box-shadow:0 0 0 4px rgba(55,205,253,.18)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#0c0f13;border:2px solid var(--cyan);cursor:pointer}
input[type=number]{width:100%;background:#0b1016;border:1px solid var(--line);border-radius:10px;
  color:var(--text);padding:11px 13px;font-family:var(--f-body);font-size:1rem}
.calc-out{background:linear-gradient(160deg,var(--panel),#10171e);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px}
.calc-out .big{font-family:var(--f-head);font-weight:800;font-size:2.4rem;color:var(--emerald);line-height:1}
.calc-out .row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line-soft);font-size:.92rem}
.calc-out .row:last-child{border-bottom:none}
.calc-out .row span:last-child{font-family:var(--f-head);font-weight:700;color:var(--text)}

/* ============ Footer ============ */
.site-footer{border-top:1px solid var(--line-soft);background:var(--bg-2);margin-top:40px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:44px 0 30px}
.footer-brand img{height:24px;margin-bottom:14px}
.footer-brand p{font-size:.88rem;color:var(--dim);max-width:42ch}
.footer-col h4{font-family:var(--f-head);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin:.45rem 0}
.footer-col a{color:var(--dim);font-size:.9rem}
.footer-col a:hover{color:var(--text)}
.footer-legal{border-top:1px solid var(--line-soft);padding:22px 0;font-size:.82rem;color:var(--dim)}
.footer-legal .disc{background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:16px 18px;margin-bottom:16px;color:var(--muted)}
.footer-legal .bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;align-items:center}
.footer-legal .mini-nav{display:flex;flex-wrap:wrap;gap:14px}
.footer-legal .mini-nav a{color:var(--dim)}

/* ============ 404 ============ */
.e404{text-align:center;padding:70px 0}
.e404 .big{font-family:var(--f-head);font-weight:800;font-size:clamp(4rem,16vw,9rem);
  background:linear-gradient(120deg,var(--emerald),var(--cyan),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;margin-bottom:10px}
.e404 .links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:24px}
.e404 .links a{font-size:.9rem}

/* page hero (inner) */
.page-hero{padding:8px 0 22px}
.page-hero .lead{margin-bottom:0}
.toc-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

/* mobile nav scrim */
.scrim{position:fixed;inset:0;background:rgba(4,7,10,.6);opacity:0;visibility:hidden;transition:.2s;z-index:80}
.scrim.show{opacity:1;visibility:visible}

/* utilities */
.mt0{margin-top:0}.mb0{margin-bottom:0}.mt24{margin-top:24px}.mt32{margin-top:32px}
.muted{color:var(--muted)}.small{font-size:.86rem}
.hr{height:1px;background:var(--line-soft);border:none;margin:34px 0}

/* content images (photos placed inside page sections) */
.media-figure{margin:26px 0 0}
.media-figure img{
  width:100%;height:auto;display:block;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--panel);
}
.media-figure.media-narrow img{max-width:440px;margin-left:auto;margin-right:auto}
.media-figure.media-compact img{
  max-width:760px;max-height:360px;object-fit:cover;
  margin-left:auto;margin-right:auto;
}
.media-figure figcaption{margin-top:10px;font-size:.82rem;color:var(--dim);text-align:center}

/* ============ Responsive ============ */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .stagger{grid-template-columns:1fr}
  .stagger .tall{grid-row:auto}
  .calc{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:24px}
  .g-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:780px){
  .header-cta .btn-desktop{display:none}
  .menu-btn{display:flex}
  /* mobile slide-down menu (same nav element) */
  .nav{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:fixed;top:68px;left:0;right:0;z-index:85;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    padding:14px 20px 22px;
    transform:translateY(-135%);transition:transform .28s cubic-bezier(.4,0,.2,1);
    max-height:calc(100vh - 68px);overflow-y:auto;
  }
  .nav.open{transform:translateY(0)}
  .nav a{padding:14px;font-size:1rem;border-radius:10px;border:1px solid transparent}
  .nav a:hover,.nav a.active{background:var(--panel);border-color:var(--line-soft)}
  .nav a.active::after{display:none}
  .nav .btn{display:flex;margin-top:10px}
}
@media (max-width:680px){
  .section{padding:40px 0}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .compare{grid-template-columns:1fr}
  .compare .vs{display:none}
  .compare .col{border-bottom:1px solid var(--line)}
  .footer-top{grid-template-columns:1fr}
  .strip{flex-direction:column;align-items:flex-start}
  .code-val{font-size:1.25rem}
  .tile-grid{gap:7px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important;transition:none!important}
}