/* Aura — design system. Static, no build step. System fonts only (no third-party requests). */
:root{
  --bg:#f7f7fc;--surface:#fff;--surface-2:#efeffa;--text:#12122a;--muted:#54546e;--line:#e2e2ef;
  --brand:#5b3df5;--brand-2:#0e8ea8;--brand-ink:#fff;--rec:#e5384f;
  --grad:linear-gradient(135deg,#5b3df5 0%,#9a35e6 55%,#c026d3 100%);
  --grad-text:linear-gradient(100deg,#5b3df5,#b02ee0 60%,#0e8ea8);
  --shadow:0 1px 2px rgba(18,18,42,.06),0 12px 32px -12px rgba(60,40,160,.22);
  --blob-a:#a78bfa;--blob-b:#67e8f9;--blob-c:#f0abfc;--blob-o:.42;
  --glass:rgba(247,247,252,.78);--kbd:#fff;
  --r:16px;--r-sm:10px;--hdr:64px;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0a0a12;--surface:#13131f;--surface-2:#1b1b2b;--text:#f2f2fa;--muted:#aaaac4;--line:#26263a;
  --brand:#9a8bff;--brand-2:#34d3ee;--rec:#ff5468;
  --grad-text:linear-gradient(100deg,#b9adff,#f0abfc 55%,#67e8f9);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 16px 40px -14px rgba(0,0,0,.7);
  --blob-a:#5b3df5;--blob-b:#0891b2;--blob-c:#a21caf;--blob-o:.5;
  --glass:rgba(10,10,18,.72);--kbd:#1b1b2b;color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0a0a12;--surface:#13131f;--surface-2:#1b1b2b;--text:#f2f2fa;--muted:#aaaac4;--line:#26263a;
    --brand:#9a8bff;--brand-2:#34d3ee;--rec:#ff5468;
    --grad-text:linear-gradient(100deg,#b9adff,#f0abfc 55%,#67e8f9);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 16px 40px -14px rgba(0,0,0,.7);
    --blob-a:#5b3df5;--blob-b:#0891b2;--blob-c:#a21caf;--blob-o:.5;
    --glass:rgba(10,10,18,.72);--kbd:#1b1b2b;color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 20px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.7 "Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI Variable","Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,video{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;background:var(--surface);color:var(--text);padding:10px 16px;border-radius:8px;z-index:100;box-shadow:var(--shadow)}
.skip:focus{top:12px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.wrap.narrow{max-width:820px}
h1,h2,h3{font-family:inherit;line-height:1.15;letter-spacing:-.025em;text-wrap:balance}
h1{font-size:clamp(2rem,4.2vw,3.05rem);font-weight:800;margin:0 0 20px}
h2{font-size:clamp(1.55rem,2.6vw,2.15rem);font-weight:750;margin:0 0 14px}
h3{font-size:1.15rem;font-weight:700;margin:0 0 6px;letter-spacing:-.01em}
p{margin:0 0 1em}
.grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}

/* progress */
.progress{position:fixed;inset:0 0 auto 0;height:3px;z-index:60;transform-origin:0 50%;transform:scaleX(0);background:var(--grad);pointer-events:none}

/* header */
header.site{position:sticky;top:0;z-index:50;height:var(--hdr);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);background:var(--glass);border-bottom:1px solid var(--line)}
header.site .wrap{height:100%;display:flex;align-items:center;gap:16px;max-width:1180px}
a.logo{display:flex;align-items:center;gap:10px;font-weight:750;color:var(--text);text-decoration:none;letter-spacing:-.01em;margin-right:auto;white-space:nowrap}
a.logo svg{width:30px;height:30px;flex:none}
a.logo{min-width:0}.a-logo-t{overflow:hidden;text-overflow:ellipsis}
header.site nav{display:flex;align-items:center;gap:4px}
header.site nav a{color:var(--muted);text-decoration:none;font-weight:550;font-size:.95rem;padding:8px 12px;border-radius:999px;transition:color .2s,background .2s}
header.site nav a:hover,header.site nav a[aria-current="page"]{color:var(--text);background:var(--surface-2)}
header.site nav a.btn{color:#fff;padding:8px 18px;margin-left:6px}
header.site nav a.btn:hover{background:var(--grad);color:#fff}
.icon-btn{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer;transition:background .2s,transform .2s}
.icon-btn:hover{background:var(--surface-2)}
.icon-btn svg{width:18px;height:18px}
.icon-btn .moon{display:none}
:root[data-theme="dark"] .icon-btn .sun{display:none}
:root[data-theme="dark"] .icon-btn .moon{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .icon-btn .sun{display:none}:root:not([data-theme="light"]) .icon-btn .moon{display:block}}

/* buttons */
.btn,.cta{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 24px;border-radius:999px;font-weight:650;text-decoration:none;font-size:1rem;border:1px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;line-height:1.2}
.btn-primary,.cta{background:var(--grad);color:#fff;box-shadow:0 10px 28px -10px rgba(120,60,230,.7)}
.btn-primary:hover,.cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px -10px rgba(120,60,230,.8)}
.btn-ghost{background:var(--surface);color:var(--text);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.btn-sm{min-height:40px;padding:8px 18px;font-size:.92rem}
.btn svg,.cta svg{width:18px;height:18px;flex:none}
.cta[data-status="pending"]{cursor:not-allowed}
.cta[data-status="pending"]:hover{transform:none}

/* aurora */
.aurora{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.aurora i{position:absolute;border-radius:50%;filter:blur(90px);opacity:var(--blob-o);will-change:transform}
.aurora i:nth-child(1){width:520px;height:520px;background:var(--blob-a);left:-120px;top:-160px;animation:drift 18s ease-in-out infinite alternate}
.aurora i:nth-child(2){width:460px;height:460px;background:var(--blob-b);right:-100px;top:40px;animation:drift 22s ease-in-out infinite alternate-reverse}
.aurora i:nth-child(3){width:420px;height:420px;background:var(--blob-c);left:36%;bottom:-220px;animation:drift 26s ease-in-out infinite alternate}
@keyframes drift{to{transform:translate3d(60px,40px,0) scale(1.12)}}
.aurora::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,transparent 55%,var(--bg))}

/* hero */
.hero{position:relative;padding:56px 0 72px;overflow:hidden}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.85rem;font-weight:650;letter-spacing:.02em;padding:7px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--muted);margin:0 0 22px;box-shadow:var(--shadow)}
.rec-dot{width:9px;height:9px;border-radius:50%;background:var(--rec);box-shadow:0 0 0 0 var(--rec);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
.lede{font-size:1.06rem;color:var(--muted);max-width:60ch}
.lede strong,.lede a{color:var(--text)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 20px}
.byline{color:var(--muted);font-size:.88rem;margin:0 0 18px}
.byline a{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.chips li{font-size:.82rem;font-weight:600;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--muted)}

/* recorder mock */
.mock{position:relative;border-radius:18px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow),0 40px 80px -30px rgba(91,61,245,.35);overflow:hidden;transform:perspective(1400px) rotateY(-4deg) rotateX(2deg);transition:transform .5s ease}
.mock:hover{transform:perspective(1400px) rotateY(0) rotateX(0)}
.mock-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.mock-bar i{width:11px;height:11px;border-radius:50%;background:var(--line)}
.mock-bar i:nth-child(1){background:#ff5f57}.mock-bar i:nth-child(2){background:#febc2e}.mock-bar i:nth-child(3){background:#28c840}
.mock-bar span{margin-left:10px;font-size:.78rem;color:var(--muted);font-weight:600}
.mock-stage{position:relative;aspect-ratio:1200/630;background:#14122b}
.mock-stage img{width:100%;height:100%;object-fit:cover}
.sel{position:absolute;border:2px dashed #fff;box-shadow:0 0 0 9999px rgba(8,6,24,.55);border-radius:4px;opacity:0;transition:all .35s cubic-bezier(.2,.8,.2,1);pointer-events:none;inset:8% 10%}
.sel b{position:absolute;left:-2px;top:-30px;background:#14122b;color:#fff;font:600 .72rem/1 ui-monospace,monospace;padding:6px 8px;border-radius:6px}
.mock[data-mode="region"] .sel{opacity:1;inset:18% 16% 24% 18%}
.mock[data-mode="window"] .sel{opacity:1;inset:6% 6% 30% 6%;border-style:solid;border-color:#9a8bff}
.mock[data-mode="screen"] .sel{opacity:0}
.count{position:absolute;inset:0;display:grid;place-items:center;background:rgba(8,6,24,.45);backdrop-filter:blur(2px);opacity:0;pointer-events:none;transition:opacity .2s}
.count span{width:96px;height:96px;border-radius:50%;background:var(--rec);color:#fff;display:grid;place-items:center;font-size:3rem;font-weight:800;box-shadow:0 0 0 12px rgba(255,84,104,.25)}
.mock[data-state="count"] .count{opacity:1}
.rec-badge{position:absolute;left:14px;top:14px;display:flex;align-items:center;gap:8px;background:rgba(10,8,28,.78);color:#fff;font:600 .8rem/1 ui-monospace,SFMono-Regular,Menlo,monospace;padding:8px 12px;border-radius:999px;opacity:0;transform:translateY(-6px);transition:all .25s}
.rec-badge i{width:9px;height:9px;border-radius:50%;background:var(--rec);animation:pulse 1.4s infinite}
.mock[data-state="rec"] .rec-badge{opacity:1;transform:none}
.tray{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;align-items:center;gap:6px;padding:7px;border-radius:999px;background:rgba(14,12,34,.86);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.12);max-width:calc(100% - 20px)}
.seg{display:flex;gap:2px;padding:3px;border-radius:999px;background:rgba(255,255,255,.07)}
.seg button,.tray .tg{font:600 .74rem/1 inherit;color:#c9c6e8;background:none;border:0;border-radius:999px;padding:8px 11px;cursor:pointer;transition:background .2s,color .2s;font-family:inherit;min-height:32px}
.seg button[aria-checked="true"]{background:#fff;color:#14122b}
.tray .tg{display:grid;place-items:center;width:34px;height:34px;padding:0}
.tray .tg svg{width:16px;height:16px}
.tray .tg[aria-pressed="false"]{opacity:.45}
.tray .tg:hover,.seg button:hover:not([aria-checked="true"]){background:rgba(255,255,255,.14)}
.rec-btn{width:44px;height:44px;border-radius:50%;border:3px solid #fff;background:var(--rec);cursor:pointer;display:grid;place-items:center;color:#fff;font:800 .62rem/1 inherit;font-family:inherit;transition:transform .2s,border-radius .25s;padding:0}
.rec-btn:hover{transform:scale(1.07)}
.mock[data-state="rec"] .rec-btn{border-radius:12px}
.hint{font-size:.78rem;color:var(--muted);text-align:center;margin:12px 0 0}

/* layout */
.layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;padding:24px 20px 40px;max-width:1180px;margin:0 auto}
.toc{position:sticky;top:calc(var(--hdr) + 24px);align-self:start;max-height:calc(100vh - var(--hdr) - 48px);overflow:auto;font-size:.92rem}
.toc p{font-size:.74rem;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
.toc ul{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;transition:color .2s,border-color .2s}
.toc a:hover{color:var(--text)}
.toc a.on{color:var(--brand);border-left-color:var(--brand);font-weight:650}
article.guide{min-width:0;max-width:780px}
article.guide>section{padding:44px 0 8px}
article.guide>section:first-child{padding-top:8px}
article.guide h2{counter-increment:sec;display:flex;align-items:baseline;gap:14px}
article.guide{counter-reset:sec}
article.guide>section>h2::before{content:counter(sec,decimal-leading-zero);font-size:.8rem;font-weight:750;letter-spacing:.06em;color:var(--brand);font-variant-numeric:tabular-nums;flex:none;transform:translateY(-.15em)}
.answer{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--r-sm);padding:6px 20px;box-shadow:var(--shadow);margin:0 0 1.2em}
.answer p{margin:.9em 0;font-size:1.04rem}
kbd{font:600 .82em/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--kbd);border:1px solid var(--line);border-bottom-width:3px;border-radius:7px;padding:3px 8px;color:var(--text)}

/* cards */
.cards{list-style:none;margin:1.2em 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;counter-reset:card}
.cards li{counter-increment:card;position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 20px 16px 20px;box-shadow:var(--shadow);transition:transform .25s,border-color .25s}
.cards li:hover{transform:translateY(-3px);border-color:var(--brand)}
.cards li::before{content:counter(card);display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--grad);color:#fff;font-weight:750;font-size:.85rem;margin-bottom:12px}
.cards li strong{display:block;font-size:1.04rem;margin-bottom:4px}
.feat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:1.4em 0}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;transition:transform .25s,border-color .25s}
.feat:hover{transform:translateY(-3px);border-color:var(--brand)}
.feat h3{font-size:1rem}
.feat p{font-size:.92rem;color:var(--muted);margin:0}

/* gallery + figures */
.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:1.6em 0}
figure{margin:1.4em 0}
figure img,figure video{width:100%;border-radius:var(--r-sm);border:1px solid var(--line)}
figcaption{color:var(--muted);font-size:.85rem;margin-top:8px;line-height:1.5}
.gallery figure{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:10px 10px 12px;box-shadow:var(--shadow);transition:transform .25s}
.gallery figure:hover{transform:translateY(-3px)}
.gallery img{cursor:zoom-in;border:0}
.gallery figcaption{padding:0 4px}
dialog.lightbox{border:0;padding:0;background:transparent;max-width:min(1100px,94vw);width:100%;color:#fff}
dialog.lightbox::backdrop{background:rgba(6,5,18,.82);backdrop-filter:blur(6px)}
dialog.lightbox img{width:100%;border-radius:12px;border:0}
dialog.lightbox p{text-align:center;margin:12px 0 0;font-size:.95rem}
dialog.lightbox button{position:absolute;right:8px;top:8px;width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.92);color:#12122a;font-size:1.3rem;cursor:pointer}

/* tables */
.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:.93rem}
table.wide{min-width:620px}
th,td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{background:var(--surface-2);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
tbody tr{transition:background .2s}
tbody tr:hover{background:var(--surface-2)}
tr.row-aura{background:linear-gradient(90deg,rgba(91,61,245,.12),rgba(192,38,211,.08))}
tr.row-aura td:first-child{font-weight:750;box-shadow:inset 3px 0 0 var(--brand)}
tbody th{text-align:left;font-weight:650;color:var(--muted);width:34%}

/* tabs */
.tabs-nav{display:flex;gap:6px;padding:5px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);margin:1.2em 0 1em;overflow-x:auto;max-width:100%;width:fit-content}
.tabs-nav button{font:inherit;font-weight:650;font-size:.92rem;color:var(--muted);background:none;border:0;border-radius:999px;padding:10px 18px;cursor:pointer;white-space:nowrap;min-height:40px;transition:all .2s}
.tabs-nav button[aria-selected="true"]{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}
.has-tabs .panel>h3{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 24px;margin:0 0 14px}
.has-tabs .panel{margin:0}
.has-tabs .panel[hidden]{display:none}
ol.steps{list-style:none;counter-reset:step;margin:0;padding:0}
ol.steps li{counter-increment:step;position:relative;padding:10px 0 10px 46px;min-height:44px}
ol.steps li::before{content:counter(step);position:absolute;left:0;top:8px;width:32px;height:32px;border-radius:50%;background:var(--surface-2);border:1px solid var(--line);display:grid;place-items:center;font-weight:750;font-size:.85rem;color:var(--brand)}

/* video */
.video-frame{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#0a0818}
.video-frame video{border:0;border-radius:0;aspect-ratio:16/9;object-fit:cover;background:#0a0818}
.play{position:absolute;inset:0;display:grid;place-items:center;border:0;background:linear-gradient(to top,rgba(8,6,24,.55),transparent 55%);cursor:pointer;transition:opacity .25s}
.play span{width:84px;height:84px;border-radius:50%;background:rgba(255,255,255,.95);display:grid;place-items:center;box-shadow:0 18px 40px -8px rgba(0,0,0,.6);transition:transform .25s}
.play:hover span{transform:scale(1.08)}
.play svg{width:30px;height:30px;margin-left:4px;color:#5b3df5}
.video-frame.playing .play{opacity:0;pointer-events:none}

/* calculator */
.calc{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;margin:1.6em 0;box-shadow:var(--shadow);position:relative;overflow:hidden}
.calc::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad)}
.calc h3{font-size:1.2rem;margin-bottom:2px}
.calc>p{color:var(--muted);font-size:.92rem;margin-bottom:18px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px}
.calc label,.calc legend{display:block;font-size:.8rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;padding:0}
.calc fieldset{border:0;margin:0;padding:0;min-width:0}
.pills{display:flex;flex-wrap:wrap;gap:8px}
.pills input{position:absolute;opacity:0;pointer-events:none}
.pills label{margin:0;text-transform:none;letter-spacing:0;font-size:.92rem;color:var(--text);padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface-2);cursor:pointer;font-weight:600;transition:all .2s;min-height:40px;display:inline-flex;align-items:center}
.pills input:checked+label{background:var(--grad);color:#fff;border-color:transparent}
.pills input:focus-visible+label{outline:3px solid var(--brand);outline-offset:2px}
.calc input[type=range]{width:100%;accent-color:var(--brand);height:28px}
.calc output.big{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.calc-out{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
.stat{background:var(--surface-2);border-radius:14px;padding:14px 16px}
.stat small{display:block;font-size:.74rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.stat:nth-child(5){grid-column:span 2}
.stat b{display:block;font-size:1.55rem;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.25}
.bar{height:10px;border-radius:99px;background:var(--surface-2);margin-top:18px;overflow:hidden}
.bar i{display:block;height:100%;width:0;border-radius:99px;background:var(--grad);transition:width .4s cubic-bezier(.2,.8,.2,1)}
.calc .note{font-size:.82rem;color:var(--muted);margin:10px 0 0}

/* checklist */
.checklist{list-style:none;margin:1.2em 0;padding:0;display:grid;gap:10px}
.checklist label{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;transition:border-color .2s,background .2s}
.checklist label:hover{border-color:var(--brand)}
.checklist input{appearance:none;-webkit-appearance:none;flex:none;width:24px;height:24px;border-radius:8px;border:2px solid var(--line);background:var(--surface-2);margin:2px 0 0;display:grid;place-items:center;cursor:pointer;transition:all .2s}
.checklist input::after{content:"";width:6px;height:11px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg) scale(0);transition:transform .2s;margin-top:-2px}
.checklist input:checked{background:var(--grad);border-color:transparent}
.checklist input:checked::after{transform:rotate(45deg) scale(1)}
.checklist input:checked~span{opacity:.55}
.checklist span{transition:opacity .2s}
.meter{display:flex;align-items:center;gap:12px;font-size:.88rem;font-weight:650;color:var(--muted);margin:0 0 4px}
.meter .bar{flex:1;margin:0}

/* faq */
details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);margin:0 0 10px;transition:border-color .2s}
details[open]{border-color:var(--brand)}
summary{cursor:pointer;font-weight:650;padding:16px 52px 16px 18px;position:relative;list-style:none;min-height:48px}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:20px;top:50%;width:10px;height:10px;border:solid var(--muted);border-width:0 2px 2px 0;transform:translateY(-70%) rotate(45deg);transition:transform .25s}
details[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--brand)}
details p{padding:0 18px 4px;color:var(--muted);margin:0 0 14px}

/* callouts + band */
.note-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px 26px;box-shadow:var(--shadow)}
.band{position:relative;margin:40px 20px 0;border-radius:28px;overflow:hidden;background:#0d0b22;color:#fff;max-width:1140px;margin-inline:auto}
.band .aurora{opacity:.9}
.band .aurora::after{display:none}
.band-in{position:relative;z-index:1;padding:64px 28px;text-align:center;max-width:720px;margin:0 auto}
.band h2{color:#fff;margin-bottom:14px}
.band p{color:#d5d2f2}
.band a:not(.btn){color:#fff}
.band .btn-primary{background:#fff;color:#2a1a8a;box-shadow:0 14px 34px -10px rgba(0,0,0,.5)}
.band .btn-primary:hover{color:#2a1a8a}

/* sub-pages */
.page-hero{position:relative;overflow:hidden;padding:56px 0 36px}
.page-hero .wrap{position:relative;z-index:1}
.page-hero .aurora i{opacity:calc(var(--blob-o) * .7)}
.prose{padding-bottom:24px}
.prose h2{margin-top:2.2em}
.prose ul:not(.cards):not(.chips):not(.feat-list),.prose ol:not(.steps){padding-left:1.3em}
.feat-list{list-style:none;margin:1.2em 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.feat-list li{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 16px 14px 44px;position:relative;font-size:.95rem;line-height:1.5}
.feat-list li::before{content:"";position:absolute;left:16px;top:18px;width:16px;height:16px;border-radius:50%;background:var(--grad)}
.feat-list li::after{content:"";position:absolute;left:21px;top:21.5px;width:4px;height:8px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.dl-card{display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:22px 26px;box-shadow:var(--shadow);margin:26px 0 0}
.dl-card p{margin:0;color:var(--muted);font-size:.92rem}
.dl-card strong{color:var(--text);display:block;font-size:1.1rem}

/* footer */
footer{margin-top:72px;border-top:1px solid var(--line);background:var(--surface);padding:48px 0 28px;color:var(--muted);font-size:.92rem}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.foot h2{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text);margin:0 0 12px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--brand);text-decoration:underline}
.foot p{margin:10px 0 0;max-width:34ch}
.legal{border-top:1px solid var(--line);margin-top:32px;padding-top:20px;font-size:.82rem}

/* reveal (progressive enhancement) */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.js .reveal.in{opacity:1;transform:none}

/* responsive */
@media (max-width:1040px){
  .layout{grid-template-columns:1fr;gap:0}
  .toc{position:sticky;top:var(--hdr);z-index:40;max-height:none;margin:0 -20px;padding:10px 20px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);overflow-x:auto;overflow-y:hidden}
  .toc p{display:none}
  .toc ul{display:flex;gap:6px;border:0;white-space:nowrap}
  .toc a{border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin:0;background:var(--surface);font-size:.85rem}
  .toc a.on{border-color:var(--brand);background:var(--surface-2)}
  html{scroll-padding-top:calc(var(--hdr) + 64px)}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .mock{transform:none}
}
@media (max-width:720px){
  body{font-size:16.5px}
  .hero{padding:36px 0 52px}
  .cards,.feat-grid,.gallery,.calc-grid,.feat-list{grid-template-columns:1fr}
  .calc-out{grid-template-columns:1fr}
  .calc{padding:20px 16px}
  .foot{grid-template-columns:1fr 1fr}
  .foot>div:first-child{grid-column:1/-1}
  header.site nav a:not(.btn){display:none}
  .seg button{padding:8px 8px;font-size:.7rem}
  .tray{gap:4px;padding:5px}
  .tray .tg{width:30px;height:30px}
  .rec-btn{width:40px;height:40px}
  .panel{padding:14px 16px}
  .band{margin-inline:12px;border-radius:22px}
  .dl-card{padding:18px}
}
@media (max-width:420px){.tray .tg{display:none}.a-logo-t{font-size:.9rem}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}
@media print{header.site,.toc,.progress,.band,footer,.mock,.tray{display:none}}
@media (max-width:480px){
  header.site .wrap{gap:10px;padding:0 14px}
  .a-logo-t{font-size:.85rem}
  a.logo{gap:8px}
  .icon-btn{width:36px;height:36px}
  header.site nav a.btn{padding:6px 14px;min-height:36px;margin-left:0;font-size:.88rem}
}
@media (max-width:560px){.dl-card .cta{width:100%}}