@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800&display=swap');

:root {
    --accent: #0A84FF;
    --primary-color: var(--accent);
    --accent-color: var(--accent);

    --ink-1: #0B0C0F;
    --ink-2: rgba(11, 12, 15, .72);
    --ink-3: rgba(11, 12, 15, .56);
    
    --surface-0: #FFFFFF;
    --surface-1: #F6F7F9;
    
    --container: 1200px;
    --radius: 16px;
    --hairline: rgba(0, 0, 0, .08);
    
    --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 24px;
    --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 72px; --s-10: 96px;
    
    --fs-display: 56px; --lh-display: 1.06;
    --fs-h2: 36px; --lh-h2: 1.15;
    --fs-h3: 24px; --lh-h3: 1.25;
    --fs-body: 18px; --lh-body: 1.65;
    --fs-small: 14px; --lh-small: 1.5;
    
    --bg-veil: .78;          
    --bg-spot: 10%;          
    --bg-grid: .02;          
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink-1);
    
    background-color: var(--surface-0);
    background-image:
      radial-gradient(1200px 800px at -10% -10%, color-mix(in srgb, var(--accent) var(--bg-spot), transparent) 0, transparent 60%),
      radial-gradient(900px 600px at 110% 0%, color-mix(in srgb, #0A84FF var(--bg-spot), transparent) 0, transparent 60%),
      radial-gradient(1100px 800px at 50% 120%, color-mix(in srgb, #0A84FF calc(var(--bg-spot) - 2%), transparent) 0, transparent 65%),
      
      linear-gradient(0deg, rgba(0,0,0,var(--bg-grid)) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0,0,0,var(--bg-grid)) 1px, transparent 1px),
      
      linear-gradient(rgba(255,255,255,var(--bg-veil)), rgba(255,255,255,var(--bg-veil)));
    background-size:
      1400px 900px,
      1000px 700px,
      1200px 800px,
      32px 32px,
      32px 32px,
      auto;
    background-position:
      -10% -10%,
      110% 0%,
      50% 120%,
      0 0,
      0 0,
      0 0;
    background-attachment: fixed, fixed, fixed, scroll, scroll, scroll;

    font-family: 'Montserrat', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: var(--fs-body);
    line-height: var(--lh-body);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--s-5); }

h1, h2, h3 { margin: 0 0 var(--s-5); font-weight: 600; letter-spacing: -0.01em; }

h1 {
    font-size: clamp(36px, 6vw, var(--fs-display));
    line-height: var(--lh-display);
    font-weight: 700;
}
h2 { font-size: clamp(24px, 3.5vw, var(--fs-h2)); line-height: var(--lh-h2); }
h3 { font-size: clamp(20px, 3vw, var(--fs-h3)); line-height: var(--lh-h3); }
p { margin: 0 0 var(--s-4); }
.small { font-size: var(--fs-small); line-height: var(--lh-small); color: var(--ink-3); }
.muted { color: var(--ink-2); }

.section { padding: var(--s-10) 0; position: relative; }
.section-title { text-align: center; margin-bottom: var(--s-8); }

.site-header {
    position: sticky; top: 0; z-index: 10;
    background: rgba(255,255,255,.30);
    border-bottom: 1px solid rgba(0,0,0,.06);
    padding: var(--s-4) 0;
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    box-shadow: 0 10px 30px rgba(0,0,0,.05);
    transition: background .25s ease, box-shadow .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled {
    background: rgba(255,255,255,.30);
    border-bottom-color: rgba(0,0,0,.08);
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
}
.site-header::after {
    content: "";
    position: absolute; inset: 0;
    pointer-events: none; border-radius: inherit;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="140" height="140" viewBox="0 0 140 140"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.05"/></svg>');
    background-size: 140px 140px;
    mix-blend-mode: overlay;
}
.logo img { height: 56px; }

.hero {
    background: transparent; 
    overflow: hidden;
    padding: var(--s-8) 0;
}
.hero .container {
    display: flex;
    justify-content: center;
    text-align: center;
}
.hero-text {
    max-width: 800px;
}
.hero-subheading {
    margin-top: var(--s-8);
    margin-bottom: var(--s-7);
}
.intro-section {
    background: rgba(255,255,255,.30);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    position: relative;
    z-index: 1;
    padding: var(--s-9) 0;
    border-top: 1px solid rgba(0,0,0,.06);
    border-bottom: 1px solid rgba(0,0,0,.06);
}
.intro-section::after {
    content: "";
    position: absolute; 
    inset: 0;
    pointer-events: none; 
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="140" height="140" viewBox="0 0 140 140"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.05"/></svg>');
    background-size: 140px 140px;
    mix-blend-mode: overlay;
    z-index: -1;
}
.intro-text-primary,
.intro-text-secondary {
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    font-size: 20px;
    line-height: 1.6;
}
.intro-text-primary {
    color: var(--ink-1);
    margin-bottom: var(--s-8);
}
.intro-text-secondary {
    color: var(--ink-2);
    margin-top: var(--s-8);
}
.intro-highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--s-5);
    max-width: 700px;
    margin: 0 auto;
}
.intro-highlight-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--s-3);
    font-size: 17px;
    font-weight: 500;
    background: var(--surface-0);
    border: 1px solid var(--hairline);
    border-radius: var(--radius);
    padding: var(--s-4);
    transition: transform .2s ease, box-shadow .2s ease;
}
.intro-highlight-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .07);
}
.intro-highlight-item svg {
    width: 24px;
    height: 24px;
    fill: var(--accent);
    flex-shrink: 0;
}
@media (max-width: 576px) {
    .intro-highlights-grid { grid-template-columns: 1fr; }
}
.waitlist-form { display: flex; flex-direction: column; gap: var(--s-4); }
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--s-4);
}
@media (min-width:576px) {
    .form-group { flex-direction: row; }
}
.waitlist-form input[type="text"],
.waitlist-form input[type="email"] {
    width: 100%;
    height: 56px;
    padding: 0 var(--s-5);
    border-radius: 9999px;
    border: 1px solid var(--hairline);
    background: var(--surface-0);
    color: var(--ink-1);
    font-weight: 500;
    outline: none;
    transition: box-shadow .15s ease, border-color .15s ease;
}
.waitlist-form input[type="text"]::placeholder,
.waitlist-form input[type="email"]::placeholder { color: var(--ink-3); }
.waitlist-form input[type="text"]:focus,
.waitlist-form input[type="email"]:focus {
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 24%, transparent);
}
.btn-row { display: flex; justify-content: center; }
.btn-submit {
    appearance: none; border: 0; cursor: pointer;
    height: 48px;
    padding: 0 var(--s-8);
    border-radius: 9999px; background: var(--accent); color: #fff;
    font-weight: 600; letter-spacing: .02em; font-size: 18px;
    box-shadow: 0 4px 10px rgba(10, 132, 255, .18);
    transition: transform .12s ease, box-shadow .2s ease, opacity .2s ease;
}
.btn-submit:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(10, 132, 255, .22); }
.btn-submit:active { transform: translateY(0); box-shadow: 0 3px 8px rgba(10, 132, 255, .18); }

.form-message {
    display: none;
    border: 1px solid #c3e6cb;
    background: #e6f9e8;
    color: #155724;
    border-radius: 12px;
    padding: var(--s-4) var(--s-5);
    margin-bottom: var(--s-4);
}
.form-message.form-message-error {
    background: #fde8ea; color: #7a1b25; border-color: #f5c6cb;
}
.form-message.form-message-success { display: block; }

.features-grid { display: grid; grid-template-columns: 1fr; gap: var(--s-6); }
.feature-item {
    background: var(--surface-0);
    border: 1px solid var(--hairline);
    border-radius: var(--radius);
    padding: var(--s-6);
}
@media (min-width: 768px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}
.faq-section {
    background: var(--surface-1);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
}
.container.narrow { max-width: 720px; }

details.faq-item {
    background: var(--surface-0);
    border: 1px solid var(--hairline);
    border-radius: var(--radius);
    margin-bottom: var(--s-4);
    padding: 0;
    overflow: hidden;
}
details.faq-item[open] { box-shadow: 0 8px 32px rgba(0, 0, 0, .06); }

.faq-item > summary {
    list-style: none; cursor: pointer; user-select: none;
    padding: var(--s-6) var(--s-6);
    font-weight: 600;
    color: var(--ink-1);
    position: relative;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::after {
    content: "";
    position: absolute; right: var(--s-6); top: 50%; width: 9px; height: 9px;
    border-right: 2px solid var(--ink-2); border-bottom: 2px solid var(--ink-2);
    transform: translateY(-60%) rotate(45deg); transition: transform .2s ease, color .2s ease;
}
details.faq-item[open] > summary::after { transform: translateY(-40%) rotate(-135deg); }

.faq-content { padding: 0 var(--s-6) var(--s-6); color: var(--ink-2); }

.cta { background: var(--surface-0); }
.cta .container.narrow { text-align: center; }
.cta .lead {
    color: var(--ink-2);
    margin: 0 auto var(--s-6);
    max-width: 640px;
}
.cta .waitlist-form {
    margin: 0 auto;
    background: var(--surface-0);
    border: 1px solid var(--hairline);
    border-radius: calc(var(--radius) + 4px);
    padding: var(--s-6);
    box-shadow: 0 10px 40px rgba(0, 0, 0, .05);
}
@media (max-width: 480px) {
    .waitlist-form input[type="text"],
    .waitlist-form input[type="email"] { height: 48px; }
    .btn-submit { width: 100%; justify-content: center; }
}
.site-footer {
    background: var(--surface-1);
    color: var(--ink-2);
    border-top: 1px solid var(--hairline);
    text-align: center;
    padding: var(--s-7) 0;
}
.site-footer a, .footer-email-link { color: var(--ink-1); text-decoration: underline; }
.site-footer a:hover, .footer-email-link:hover { opacity: .8; }

@media (prefers-reduced-motion: reduce) {
  body { background-attachment: scroll, scroll, scroll, scroll, scroll, scroll; }
  .intro-highlight-item:hover { transform: none; }
}
.waitlist-form input[type="text"],
.waitlist-form input[type="email"] {
    font-size: 18px;
}
.mid-illustration img { }