@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400 800; font-display: swap; src: url('./fonts/inter-cyrillic-ext.woff2') format('woff2'); unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F; }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400 800; font-display: swap; src: url('./fonts/inter-cyrillic.woff2') format('woff2'); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400 800; font-display: swap; src: url('./fonts/inter-vietnamese.woff2') format('woff2'); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400 800; font-display: swap; src: url('./fonts/inter-latin-ext.woff2') format('woff2'); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400 800; font-display: swap; src: url('./fonts/inter-latin.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
/* NatalProfile — design system "Night sky". Tokens are documented in DESIGN.md.
   Inter @font-face rules are prepended at build time (see build.py). */
:root{
  /* surface layers */
  --bg-app:oklch(0.12 0.02 260);                      /* deep obsidian, about #090A10 */
  --surface-glass-base:rgba(18,22,36,.65);
  --surface-glass-border:rgba(255,255,255,.08);
  --surface-glass-border-hover:rgba(226,203,153,.3);
  /* accent: muted champagne to radiant gold */
  --accent-champagne:oklch(0.85 0.08 85);             /* about #E2CB99 */
  --accent-gold-dark:oklch(0.68 0.12 75);             /* about #B89762 */
  --accent-glow:rgba(226,203,153,.15);
  /* typography */
  --text-primary:oklch(0.96 0.01 250);
  --text-secondary:oklch(0.80 0.02 250);              /* body copy; 0.72 in the brief was too dim for long reading */
  --text-muted:oklch(0.68 0.02 250);                  /* small print; 0.50 in the brief fails WCAG AA on this background */
  /* elevation and motion */
  --radius-card:16px;--radius-btn:12px;
  --ease-out-quint:cubic-bezier(0.22,1,0.36,1);--ease-elastic:cubic-bezier(0.16,1,0.3,1);
  /* aliases used across the stylesheet */
  --bg:var(--bg-app);--bg-2:oklch(0.16 0.025 260);--panel:var(--surface-glass-base);--panel-2:rgba(24,30,48,.8);
  --line:var(--surface-glass-border);--line-hi:var(--surface-glass-border-hover);
  --text:var(--text-primary);--body:var(--text-secondary);--muted:var(--text-muted);
  --gold:var(--accent-champagne);--gold-2:oklch(0.90 0.07 88);--gold-ink:#090A10;--violet:#a78bfa;--ok:#a8efca;
  --r:var(--radius-card);--r-sm:var(--radius-btn);--shadow:0 24px 70px rgba(0,0,0,.55);
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --glyph:'DejaVu Sans','Segoe UI Symbol','Noto Sans Symbols2','Apple Symbols',serif;
  color-scheme:dark;
}
@media (prefers-color-scheme:light){
  :root{--bg:#f6f3ec;--bg-2:#efeadf;--panel:#fffdf8;--panel-2:#fbf6ea;--line:rgba(28,34,51,.14);--line-hi:rgba(122,95,16,.55);
    --text:#141a2b;--body:#2f374b;--muted:#566079;--gold:#7a5f10;--gold-2:#8f7016;--gold-ink:#fffdf8;--violet:#5b3fc4;--ok:#1d7a4f;
    --shadow:0 18px 50px rgba(40,30,5,.12);color-scheme:light}
  .btn-primary{background:#141a2b!important;color:#fffdf8!important;box-shadow:none!important}
  .sky,.stars{display:none}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{margin:0;background:transparent;color:var(--body);font:17px/1.65 var(--font);-webkit-text-size-adjust:100%;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--gold-2)}a:hover{color:var(--gold)}
h1,h2,h3{color:var(--text);line-height:1.18;margin:0}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}
.skip-link{position:absolute;inset-inline-start:12px;top:-60px;background:var(--gold);color:var(--gold-ink);padding:10px 16px;border-radius:10px;font-weight:700;z-index:100;text-decoration:none}
.skip-link:focus{top:12px}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

/* sky backdrop (dark theme only): static gradient + star field, no motion */
.sky{position:fixed;inset:0;z-index:-2;background-color:var(--bg-app);background-image:radial-gradient(ellipse 80% 50% at 50% -10%,rgba(30,38,66,.5),transparent 80%),radial-gradient(circle at 85% 30%,rgba(226,203,153,.03),transparent 40%)}
.stars{position:fixed;inset:0;z-index:-1;width:100%;height:100%;pointer-events:none;opacity:.85}

/* header */
.site-head{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 90%,transparent);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:18px;height:64px}
.logo{font-weight:800;letter-spacing:.14em;font-size:14.5px;color:var(--gold);text-decoration:none;margin-inline-end:auto;white-space:nowrap}
.nav{display:flex;align-items:center;gap:4px}
.nav a,.nav-dd>button,.lang>button{min-height:44px;font:inherit;font-size:14.5px;color:var(--body);background:none;border:0;padding:9px 12px;border-radius:10px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.nav a:hover,.nav-dd>button:hover,.lang>button:hover{color:var(--text);background:rgba(127,140,180,.14)}
.nav-dd,.lang{position:relative}
.dd-panel{position:absolute;top:calc(100% + 8px);inset-inline-start:0;min-width:270px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--shadow);padding:8px;display:none;z-index:40}
.lang .dd-panel{inset-inline-start:auto;inset-inline-end:0;min-width:190px;max-height:70vh;overflow:auto}
[aria-expanded="true"]+.dd-panel{display:block}
.dd-panel a{display:flex;align-items:center;min-height:44px;gap:10px;padding:9px 12px;border-radius:9px;color:var(--body);text-decoration:none;font-size:14.5px}
.dd-panel a:hover,.dd-panel a[aria-current]{background:rgba(127,140,180,.14);color:var(--text)}
.lang>button{border:1px solid var(--line)}
.head-cta{padding:9px 18px!important;font-size:14px!important;min-height:44px!important}
.burger{display:none;min-width:44px;min-height:44px;font:inherit;font-size:22px;line-height:1;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:7px 11px;cursor:pointer}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;gap:8px;padding:14px 28px;border-radius:var(--radius-btn);font-weight:700;font-size:16px;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:linear-gradient(135deg,var(--gold-2),var(--gold));color:var(--gold-ink);box-shadow:0 10px 30px rgba(227,193,90,.22)}
.btn-primary:hover{color:var(--gold-ink);filter:brightness(1.06)}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--line-hi);color:var(--text)}

/* hero */
.hero{padding:54px 0 34px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.eyebrow{font-size:12.5px;letter-spacing:.17em;text-transform:uppercase;font-weight:700;color:var(--gold)}
h1{font-size:clamp(31px,4.6vw,50px);letter-spacing:-.015em;margin:14px 0 18px}
h1 em{font-style:normal;color:var(--gold)}
.lead{font-size:19px;max-width:560px;color:var(--body)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 18px}
.marks{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--muted)}
.marks li::before{content:"✓";color:var(--gold);font-weight:800;margin-inline-end:6px}
.hero-art{position:relative}
.hero-art::before{content:"";position:absolute;inset:-6%;border-radius:50%;background:radial-gradient(circle,rgba(227,193,90,.17),transparent 62%)}
.wheel{position:relative;width:100%;max-width:460px;margin-inline-start:auto;display:block}
.wheel text{font-family:var(--glyph)}

/* sections */
.section{padding:60px 0;border-top:1px solid var(--line)}
.section h2{font-size:clamp(24px,3vw,31px);margin-bottom:10px}
.sub{color:var(--muted);max-width:700px;margin-bottom:30px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card h3{font-size:18px;margin-bottom:6px}
.card p{margin:0;font-size:15.5px}
.card b.t{display:block;font-size:17px;color:var(--gold-2);margin-bottom:6px}

/* stats row */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:30px 0 46px}
.stat{background:color-mix(in srgb,var(--panel) 70%,transparent);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.stat b{display:block;font-size:26px;color:var(--text);line-height:1.1}
.stat span{font-size:13.5px;color:var(--muted)}

/* tools */
.tools{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tool label{display:block;font-size:14px;color:var(--muted);margin:12px 0 6px}
.tool input{width:100%;font:inherit;font-size:16px;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg-2);color:var(--text);color-scheme:inherit}
.tool .out{margin-top:16px;padding:16px;border-radius:12px;border:1px dashed var(--line-hi);min-height:92px}
.tool .out b{font-size:22px;color:var(--text);display:inline-block}.tool .out .gl{font-family:var(--glyph);font-size:26px;color:var(--gold);margin-inline-end:10px}
.tool .out small{display:block;color:var(--muted);font-size:13.5px;margin-top:6px}
.tool .btn{margin-top:14px;padding:11px 18px;font-size:15px}
.tool .out[hidden]+.btn{display:none}

/* carousel */
.carousel{position:relative}
.car-track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,31%);gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:thin}
.car-track figure{margin:0;scroll-snap-align:start}
.car-track img{border-radius:10px;border:1px solid var(--line);background:#fff;box-shadow:0 14px 40px rgba(0,0,0,.35)}
.car-track figcaption{font-size:14px;color:var(--muted);margin-top:10px}
.car-nav{display:flex;gap:8px;justify-content:flex-end;margin-bottom:12px}
.car-nav button{font:inherit;font-size:18px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer}
.car-nav button:hover{border-color:var(--line-hi)}
blockquote{margin:30px 0 0;padding:20px 24px;border-inline-start:3px solid var(--gold);background:var(--panel);border-radius:0 14px 14px 0;font-size:18px;color:var(--text)}
blockquote footer{font-size:14px;color:var(--muted);margin-top:8px}

/* report cards */
.report{display:flex;flex-direction:column;gap:12px;text-decoration:none;color:inherit}
.report:hover{border-color:var(--line-hi)}
.report .top{display:flex;gap:14px;align-items:flex-start}
.report .ico{font-size:28px;line-height:1}
.report .bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:auto;font-size:14.5px}
.price{font-weight:800;font-size:18px;color:var(--text)}
.tag{display:inline-block;margin-inline-start:8px;padding:2px 9px;border-radius:999px;background:rgba(126,214,167,.12);color:var(--ok);font-size:12px;font-weight:600;vertical-align:middle}
.more{color:var(--gold-2);font-weight:600}

/* steps, faq */
.steps{counter-reset:s}
.step::before{counter-increment:s;content:counter(s);display:inline-flex;width:30px;height:30px;border-radius:50%;background:var(--gold);color:var(--gold-ink);font-weight:800;align-items:center;justify-content:center;margin-bottom:10px}
details.q{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin-bottom:10px}
details.q summary{cursor:pointer;color:var(--text);font-weight:600;font-size:16.5px;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none}details.q summary::-webkit-details-marker{display:none}details.q summary::after{content:"+";color:var(--gold);font-size:22px;font-weight:400;transition:transform .3s var(--ease-out-quint)}details.q[open] summary::after{transform:rotate(45deg)}
details.q p{margin:10px 0 0}

/* inner pages */
.crumbs{font-size:14px;color:var(--muted);padding:22px 0 0}
.crumbs a{color:var(--muted)}
.page-head{padding:20px 0 30px}
.page-head h1{font-size:clamp(28px,4vw,42px);margin:10px 0 14px}
.facts{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 6px;padding:0;list-style:none}
.facts li{padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:14.5px;background:var(--panel)}
.prose{max-width:760px}
.prose h2{font-size:24px;margin:34px 0 12px}
.prose h3{font-size:18px;margin:22px 0 8px}
.prose ul,.prose ol{padding-inline-start:22px;margin:0 0 1em}
.prose li{margin-bottom:6px}
.chapters{counter-reset:c;list-style:none;padding:0;margin:0;display:grid;gap:10px}
.chapters li{counter-increment:c;display:flex;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px;color:var(--text)}
.chapters li::before{content:counter(c);flex:0 0 28px;height:28px;border-radius:50%;border:1px solid var(--line-hi);color:var(--gold);font-weight:700;font-size:14px;display:inline-flex;align-items:center;justify-content:center}
.split{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:start}
.aside-card{position:sticky;top:88px}
.aside-card .price{font-size:30px;display:block;margin-bottom:4px}
.aside-card .btn{width:100%;margin-top:14px}
dl.gloss dt{color:var(--text);font-weight:700;font-size:18px;margin-top:22px}
dl.gloss dd{margin:6px 0 0}

/* closing + footer */
.closing{text-align:center}
.closing .cta-row{justify-content:center}
.site-foot{border-top:1px solid var(--line);padding:38px 0 96px;font-size:14.5px;color:var(--muted)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.foot-h{color:var(--text);font-weight:700;margin-bottom:10px;font-size:14.5px}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin-bottom:2px}.site-foot li a{display:inline-flex;align-items:center;min-height:36px}
.site-foot a{color:var(--muted);text-decoration:none}
.site-foot a:hover{color:var(--text)}
.legal-note{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px}
.install-btn{min-height:44px;font:inherit;font-size:14px;margin-top:12px;padding:8px 14px;border-radius:10px;border:1px solid var(--line);background:none;color:var(--body);cursor:pointer}
.sticky-cta{position:fixed;inset-inline:0;bottom:0;z-index:25;padding:10px 16px;background:color-mix(in srgb,var(--bg) 94%,transparent);border-top:1px solid var(--line);display:none}
.sticky-cta .btn{width:100%}

[dir="rtl"] blockquote{border-radius:14px 0 0 14px}

@media (max-width:960px){
  .hero-grid,.split{grid-template-columns:1fr}.wheel{max-width:320px;margin:0 auto}
  .g4,.stats{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}.aside-card{position:static}
  .nav{display:none;position:absolute;top:64px;inset-inline:0;background:var(--bg-2);border-bottom:1px solid var(--line);padding:12px 16px;flex-direction:column;align-items:stretch}
  .nav.open{display:flex}.burger{display:block}
  .nav .dd-panel{position:static;box-shadow:none;border:0;background:none;padding:0 0 0 12px}
  .nav-dd>button{width:100%;justify-content:space-between}
}
@media (max-width:760px){
  body{font-size:16.5px}.hero{padding:30px 0 22px}.section{padding:44px 0}.lead{font-size:17px}
  .g2,.tools{grid-template-columns:1fr}.car-track{grid-auto-columns:78%}
  .cta-row .btn{width:100%}.sticky-cta{display:block}.head-cta{display:none!important}
}
@media (max-width:420px){.stats{grid-template-columns:1fr 1fr}.stat b{font-size:22px}.foot-grid{grid-template-columns:1fr}.wrap{padding:0 16px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
.tool-note{font-size:13.5px;margin:14px 0 0}.aside-note{font-size:14px;margin:14px 0 0}.sample-wide{margin-top:26px}.closing .sub{margin-inline:auto}.prose small{color:var(--muted)}/* NatalProfile — "Luxury tech" visual layer (loaded after np.css). Tokens: see :root in np.css and DESIGN.md.
   Rules of this layer:
   - only transform and opacity are animated; shadows and glows live on pseudo-elements and fade by opacity;
   - nothing here changes layout, so there is no layout shift;
   - backdrop blur is used on the header and, on wide screens with a mouse, on cards; phones get the same
     translucent surface without blur (many blurred cards cost paint time and hurt tap response);
   - everything decorative stops under prefers-reduced-motion and is toned down in the light theme. */

/* ambient light: two slow, faint blobs (opacity + transform only) */
.sky::before,.sky::after{content:"";position:absolute;border-radius:50%;filter:blur(70px);animation:np-ambient 9s var(--ease-out-quint) infinite alternate;will-change:transform,opacity}
.sky::before{width:520px;height:520px;inset-inline-end:-140px;top:-160px;background:radial-gradient(circle,rgba(226,203,153,.13),transparent 68%)}
.sky::after{width:560px;height:560px;inset-inline-start:-200px;bottom:-220px;background:radial-gradient(circle,rgba(120,130,220,.14),transparent 68%);animation-delay:-4.5s}
@keyframes np-ambient{from{opacity:.5;transform:scale(.95)}to{opacity:1;transform:scale(1.05)}}

/* film grain over the backdrop (inline SVG noise) */
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.06;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E")}

/* canvas star field replaces the static star image once the script starts */
.sky-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none}
.fx-on .stars{display:none}

/* glass surfaces */
.card,.stat,details.q,.chapters li,blockquote{position:relative;background:var(--surface-glass-base);border:1px solid var(--surface-glass-border);border-radius:var(--radius-card);
  transform:translate3d(0,0,0);transition:transform .3s var(--ease-elastic),border-color .3s ease}
.chapters li{border-radius:12px}
.site-head{-webkit-backdrop-filter:blur(16px) saturate(180%);backdrop-filter:blur(16px) saturate(180%)}
/* elevation layer: the shadow + glow sit on ::before and only their opacity changes on hover */
.card::before,.stat::before,details.q::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;z-index:-1;
  box-shadow:0 12px 32px -8px rgba(0,0,0,.6),0 0 20px 0 var(--accent-glow);transition:opacity .3s ease}
.card:hover,.stat:hover,details.q:hover{border-color:var(--surface-glass-border-hover)}
.card:hover::before,.stat:hover::before,details.q:hover::before{opacity:1}
a.card:hover,.stat:hover{transform:translate3d(0,-2px,0)}
a.card:active{transform:translate3d(0,0,0) scale(.99)}
@media (min-width:761px) and (pointer:fine){
  .card,.stat,details.q,blockquote{-webkit-backdrop-filter:blur(16px) saturate(180%);backdrop-filter:blur(16px) saturate(180%)}
}

/* exhibit corners: champagne brackets where the value lives (price card, tool result, key quote) */
.aside-card::after,.tool .out::after,.exhibit::after{content:"";position:absolute;inset:8px;pointer-events:none;opacity:.75;
  background:
    linear-gradient(var(--gold),var(--gold)) top left/18px 1px no-repeat,linear-gradient(var(--gold),var(--gold)) top left/1px 18px no-repeat,
    linear-gradient(var(--gold),var(--gold)) top right/18px 1px no-repeat,linear-gradient(var(--gold),var(--gold)) top right/1px 18px no-repeat,
    linear-gradient(var(--gold),var(--gold)) bottom left/18px 1px no-repeat,linear-gradient(var(--gold),var(--gold)) bottom left/1px 18px no-repeat,
    linear-gradient(var(--gold),var(--gold)) bottom right/18px 1px no-repeat,linear-gradient(var(--gold),var(--gold)) bottom right/1px 18px no-repeat}
.tool .out{position:relative;border:1px solid var(--surface-glass-border);padding:22px;background:rgba(255,255,255,.02)}

/* primary action: champagne-to-gold gradient, a soft top highlight that fades in on hover, press feedback */
.btn{transition:transform .2s var(--ease-out-quint),background-color .2s var(--ease-out-quint),border-color .2s var(--ease-out-quint);will-change:transform}
.btn-primary{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--accent-champagne) 0%,var(--accent-gold-dark) 100%);color:var(--gold-ink);font-weight:600;border:none;box-shadow:none;filter:none}
.btn-primary::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(255,255,255,.4),transparent 70%);opacity:0;transition:opacity .3s ease;pointer-events:none}
/* glow under the button: a blurred copy on ::before, shown by opacity only */
.btn-primary::before{content:"";position:absolute;inset:6px 10px -8px;border-radius:inherit;background:var(--accent-champagne);filter:blur(16px);opacity:.28;z-index:-1;transition:opacity .3s ease;pointer-events:none}
.btn-primary:hover{transform:translate3d(0,-1px,0) scale(1.01);color:var(--gold-ink);filter:none}
.btn-primary:hover::after{opacity:1}
.btn-primary:active{transform:translate3d(0,0,0) scale(.98)}
.cta-row .btn-primary,.aside-card .btn-primary,.sticky-cta .btn-primary{overflow:visible;isolation:isolate}
.cta-row .btn-primary::after,.aside-card .btn-primary::after,.sticky-cta .btn-primary::after{border-radius:inherit}
/* secondary / outline */
.btn-ghost{background:rgba(255,255,255,.03);color:var(--text-primary);border:1px solid var(--surface-glass-border-hover)}
.btn-ghost:hover{background:rgba(226,203,153,.08);border-color:var(--accent-champagne);color:var(--text-primary)}
.btn-ghost:active{transform:scale(.98)}

/* hero: the wheel sways slowly; its halo breathes */
html{overflow-x:clip}.hero-art{overflow:clip;overflow-clip-margin:40px}
.wheel{animation:np-sway 22s ease-in-out infinite alternate;transform-origin:50% 50%;will-change:transform}
@keyframes np-sway{from{transform:rotate(-4deg)}to{transform:rotate(4deg)}}
.hero-art::before{animation:np-ambient 8s ease-in-out infinite alternate}

/* scroll reveal (class added by the script; without the script everything is visible) */
.fx-on .reveal{opacity:0;transform:translate3d(0,18px,0)}
.fx-on .reveal.in{opacity:1;transform:translate3d(0,0,0);transition:opacity .7s var(--ease-out-quint),transform .7s var(--ease-out-quint)}

/* tilt + sheen on the sample pages (desktop; the script sets the transform while the pointer is over a page) */
.car-track figure{perspective:900px}
.car-track .tilt{position:relative;border-radius:10px;transition:transform .3s var(--ease-out-quint);transform-style:preserve-3d;will-change:transform}
.car-track .tilt::after{content:"";position:absolute;inset:0;border-radius:10px;pointer-events:none;opacity:0;transition:opacity .3s ease;
  background:linear-gradient(115deg,transparent 35%,rgba(255,255,255,.22) 50%,transparent 65%)}
.car-track .tilt.on::after{opacity:1}
.car-nav button{transition:transform .2s var(--ease-out-quint),border-color .2s ease}
.car-nav button:hover{transform:scale(1.06);border-color:var(--surface-glass-border-hover)}
.car-nav button:active{transform:scale(.96)}

@media (max-width:760px){
  .sky::before{width:320px;height:320px}.sky::after{width:340px;height:340px}
  .site-head{-webkit-backdrop-filter:none;backdrop-filter:none;background:rgba(9,10,16,.94)}
  .card,.stat,details.q,.chapters li,blockquote{background:rgba(18,22,36,.86)}
}
@media (prefers-color-scheme:light){
  .sky-canvas,body::after{display:none}
  .card,.stat,details.q,.chapters li,blockquote{background:var(--panel);-webkit-backdrop-filter:none;backdrop-filter:none}
  .card::before,.stat::before,details.q::before{box-shadow:0 12px 30px -10px rgba(60,45,10,.22)}
  .btn-primary{background:#141a2b;color:#fffdf8}.btn-primary::before{display:none}.btn-primary:hover{color:#fffdf8}
  .btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}.btn-ghost:hover{color:var(--text)}
  .tool .out{background:transparent}
}
@media (prefers-reduced-motion:reduce){
  .sky::before,.sky::after,.hero-art::before,.wheel{animation:none!important}
  .sky-canvas{display:none}
  .fx-on .reveal{opacity:1;transform:none}
  .btn,.card,.stat,details.q,.car-track .tilt{transition:none!important}
}