:root {
  --color-background: #0c1116; --color-surface: #151d25; --color-panel: #1b2630;
  --color-foreground: #f3f7fa; --color-muted: #b4c0ca; --color-border: #40505d;
  --color-primary: #70d6a3; --color-primary-foreground: #082016;
  --color-secondary: #273642; --color-danger: #f5a6a6; --color-danger-surface: #48272c;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--color-background); color: var(--color-foreground); font: 1rem/1.5 system-ui, sans-serif; }
button, input, select { font: inherit; }
.sp-shell { padding: 1.5rem; margin-inline: auto; }
.sp-panel { width: 100%; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: .75rem; box-shadow: 0 1rem 2rem #0004; }
.sp-panel-inner { padding: clamp(1.25rem, 4vw, 2.5rem); }
.sp-kicker { color: var(--color-primary); font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.sp-title { margin: .5rem 0 1rem; color: var(--color-foreground); font-size: clamp(1.5rem, 5vw, 2.25rem); line-height: 1.1; }
.sp-form-stack { display: grid; gap: .75rem; }
.sp-label { color: var(--color-foreground); font-weight: 650; }
.sp-input { width: 100%; padding: .7rem .8rem; color: var(--color-foreground); background: var(--color-panel); border: 1px solid var(--color-border); border-radius: .4rem; }
.sp-input:focus-visible, .sp-btn:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; }
.sp-btn { border: 1px solid transparent; border-radius: .4rem; cursor: pointer; padding: .7rem 1rem; font-weight: 700; }
.sp-btn:disabled { cursor: not-allowed; opacity: .55; }
.sp-btn-primary { color: var(--color-primary-foreground); background: var(--color-primary); }
.sp-btn-secondary { color: var(--color-foreground); background: var(--color-secondary); border-color: var(--color-border); }
.sp-check { display: flex; gap: .6rem; align-items: flex-start; }
.sp-check-mark { display: none; }
.sp-view[hidden], .tsf-view[hidden] { display: none; }