:root {
  color-scheme: dark;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Arial, sans-serif;
  background: #071017;
  color: #f4f8fb;
  --page: #071017;
  --panel: rgba(13, 25, 34, .92);
  --panel-solid: #0d1922;
  --input: #071018;
  --line: #2b3d49;
  --line-strong: #496272;
  --text: #f4f8fb;
  --muted: #adbdc8;
  --subtle: #8296a3;
  --accent: #73f2c3;
  --accent-deep: #12624f;
  --focus: #70d7ff;
  --shadow: 0 28px 90px rgba(0, 0, 0, .28);
  -webkit-font-smoothing: antialiased;
}

:root[data-theme="light"] {
  color-scheme: light;
  background: #f3f7f7;
  color: #10212a;
  --page: #f3f7f7;
  --panel: rgba(255, 255, 255, .92);
  --panel-solid: #ffffff;
  --input: #ffffff;
  --line: #ccdadd;
  --line-strong: #9bb0b7;
  --text: #10212a;
  --muted: #4e626c;
  --subtle: #667d87;
  --accent: #00785a;
  --accent-deep: #075d4a;
  --focus: #087da8;
  --shadow: 0 26px 80px rgba(22, 54, 65, .13);
}

* { box-sizing: border-box; }
body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 10% -8%, rgba(44, 151, 183, .2), transparent 34rem),
    radial-gradient(circle at 92% 10%, rgba(52, 164, 121, .14), transparent 32rem),
    var(--page);
  color: var(--text);
}
.shell { width: min(1180px, calc(100% - 32px)); min-height: calc(100vh - 74px); margin: 0 auto; padding: 24px 0 42px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 48px; }
.topbar-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; }
.topbar-link { padding: 8px 4px; color: var(--muted); font-size: 13px; text-decoration: none; }
.topbar-link:hover, .topbar-link[aria-current="page"] { color: var(--text); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); font-size: 12px; font-weight: 850; letter-spacing: .13em; text-decoration: none; }
.brand span { display: inline-grid; min-width: 42px; min-height: 28px; place-items: center; border-radius: 8px; background: var(--accent); color: var(--page); letter-spacing: .06em; }
.theme-toggle { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); color: var(--muted); font: inherit; font-size: 12px; cursor: pointer; box-shadow: 0 8px 28px rgba(0, 0, 0, .06); }
.theme-icon { display: inline-grid; width: 20px; height: 20px; place-items: center; border-radius: 50%; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); font-size: 13px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr); align-items: center; gap: clamp(34px, 6vw, 78px); padding: clamp(48px, 8vw, 94px) 0 44px; }
.hero-copy { min-width: 0; }
.eyebrow, .step { margin: 0 0 12px; color: var(--accent); font-size: 12px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
h1 { max-width: 720px; margin: 0; font-size: clamp(3rem, 7vw, 6.7rem); line-height: .9; letter-spacing: -.06em; text-wrap: balance; }
h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 3vw, 2.2rem); }
p { color: var(--muted); line-height: 1.55; }
.lead { max-width: 650px; margin: 24px 0 0; font-size: clamp(1rem, 2vw, 1.24rem); }
.benefits { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.benefits span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; background: color-mix(in srgb, var(--panel-solid) 72%, transparent); color: var(--muted); font-size: 12px; }
.hero-preview { min-height: 338px; padding: 15px; border: 1px solid rgba(130, 190, 206, .24); border-radius: 24px; background: linear-gradient(145deg, #102a35, #07131d 70%); color: #f4f8fb; box-shadow: 0 30px 80px rgba(2, 16, 23, .35); transform: rotate(1.2deg); }
.preview-top { display: flex; justify-content: space-between; gap: 12px; color: #8299a6; font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.preview-live { color: #ff8b96; }
.preview-safe-area { position: relative; display: flex; min-height: 288px; align-items: flex-end; padding: 28px 18px; border: 1px solid rgba(167, 207, 219, .13); border-radius: 15px; background: radial-gradient(circle at 15% 10%, rgba(68, 163, 180, .18), transparent 48%), #091721; }
.preview-safe-area::before, .preview-safe-area::after { position: absolute; width: 64px; height: 3px; background: linear-gradient(90deg, #73f2c3, #70d7ff); content: ""; }
.preview-safe-area::before { top: 0; left: 0; }
.preview-safe-area::after { right: 0; bottom: 0; }
.preview-title { position: relative; width: 100%; padding: 17px 18px 16px 24px; border-radius: 0 12px 12px 0; background: rgba(8, 18, 26, .92); box-shadow: 0 14px 34px rgba(0, 0, 0, .28); }
.preview-title::before { position: absolute; inset: 0 auto 0 0; width: 5px; background: linear-gradient(#73f2c3, #70d7ff); content: ""; }
.preview-title small, .preview-title strong, .preview-title span { display: block; }
.preview-title small { margin-bottom: 7px; color: #73f2c3; font-size: 10px; font-weight: 850; letter-spacing: .12em; }
.preview-title strong { font-size: clamp(1.1rem, 2.1vw, 1.65rem); letter-spacing: -.025em; }
.preview-title span { margin-top: 4px; color: #afbdc9; font-size: 12px; }
.storage { margin: 4px 0 18px; padding: 14px 17px; border: 1px solid; border-radius: 14px; line-height: 1.5; }
.storage strong { display: block; }
.durable { border-color: color-mix(in srgb, var(--accent) 48%, var(--line)); background: color-mix(in srgb, var(--accent) 10%, var(--panel)); color: var(--accent); }
.volatile { border-color: #9a7529; background: color-mix(in srgb, #c58f18 12%, var(--panel)); color: #d19a27; }
.panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 28px; padding: clamp(22px, 4vw, 34px); border: 1px solid var(--line); border-radius: 22px; background: var(--panel); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.panel p { margin: 8px 0 0; }
#fallback-panel { display: block; }
#fallback-panel .button-link { margin-top: 8px; }
.create-action { min-width: min(100%, 250px); }
button, input, .button-link { min-height: 48px; border: 1px solid var(--line-strong); border-radius: 11px; color: var(--text); font: inherit; }
button { padding: 11px 17px; cursor: pointer; }
button:disabled { cursor: wait; opacity: .58; }
.primary { width: 100%; border-color: rgba(115, 242, 195, .45); background: linear-gradient(120deg, #16785d, #10515a); color: #fff; font-weight: 800; box-shadow: 0 12px 28px rgba(10, 92, 73, .22); }
.primary:hover:not(:disabled) { filter: brightness(1.08); }
.status { min-height: 1.55em; margin: 10px 0 0 !important; font-size: 13px; }
.status[data-error="true"] { color: #d33d52; }
label { display: grid; gap: 7px; margin: 15px 0; color: var(--muted); font-size: 13px; }
input { width: 100%; padding: 10px 12px; background: var(--input); font: 12px ui-monospace, monospace; }
.button-link { display: inline-flex; align-items: center; justify-content: center; padding: 10px 16px; text-decoration: none; }
.hidden { display: none !important; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.public-footer { display: grid; gap: 8px; padding: 16px 12px 34px; text-align: center; }
.public-footer nav { display: flex; justify-content: center; gap: 10px; color: var(--subtle); }
.public-footer a { color: var(--subtle); font-size: 12px; }
.info-shell { min-height: auto; }
.info-page { width: min(900px, 100%); margin: 0 auto; padding: clamp(52px, 8vw, 94px) 0 34px; }
.info-header { margin-bottom: 30px; }
.info-header h1 { font-size: clamp(3.3rem, 9vw, 6.8rem); }
.info-card { margin-top: 16px; padding: clamp(22px, 4vw, 34px); border: 1px solid var(--line); border-radius: 22px; background: var(--panel); box-shadow: var(--shadow); }
.info-card h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
.info-card p:last-child, .info-card ol:last-child { margin-bottom: 0; }
.info-card ol { display: grid; gap: 10px; margin: 16px 0; padding-left: 1.4rem; color: var(--muted); line-height: 1.55; }
.info-card strong { color: var(--text); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.info-grid .info-card { height: calc(100% - 16px); }
.note, .warning { padding: 14px 16px; border-radius: 12px; }
.note { background: color-mix(in srgb, var(--accent) 10%, var(--panel-solid)); }
.warning { border: 1px solid color-mix(in srgb, #e2a846 52%, var(--line)); background: color-mix(in srgb, #e2a846 10%, var(--panel-solid)); }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  .hero-preview { min-height: 300px; transform: none; }
  .preview-safe-area { min-height: 250px; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 20px, 1180px); padding-top: 12px; }
  .topbar { align-items: flex-start; }
  .topbar-actions { gap: 7px; }
  .topbar-link { font-size: 12px; }
  .theme-toggle [data-interface-theme-label] { display: none; }
  .theme-toggle { padding-inline: 9px; }
  .hero { gap: 26px; padding-block: 38px 28px; }
  h1 { font-size: clamp(2.8rem, 15vw, 4.5rem); }
  .hero-preview { min-height: 260px; padding: 10px; border-radius: 18px; }
  .preview-safe-area { min-height: 215px; padding: 20px 12px; }
  .panel { grid-template-columns: 1fr; gap: 16px; }
  .info-grid { grid-template-columns: 1fr; }
  .create-action { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}