:root { color: #17231c; background: #eff5f0; font: 17px/1.5 Inter, Arial, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; }
.brief-shell { width: min(100%, 46rem); min-height: 100dvh; margin: auto; padding: 2rem 1.25rem 1.5rem; }
header { margin-bottom: 1.5rem; }
.eyebrow { margin: 0; color: #39734f; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; font-size: .8rem; }
h1 { margin: .2rem 0 .5rem; font-size: clamp(2rem, 7vw, 3rem); line-height: 1.1; }
header p:last-child { color: #4e5b52; margin: 0; }
.progress { height: .45rem; border-radius: 99px; overflow: hidden; background: #d6e1d9; margin-bottom: 1.5rem; }
.progress span { display: block; height: 100%; background: #39734f; transition: width .2s; }
.question-card { background: white; border-radius: 1.25rem; padding: clamp(1.25rem, 5vw, 2.5rem); box-shadow: 0 1rem 3rem #1d402313; }
.question-number { color: #39734f; font-weight: 700; margin: 0 0 .3rem; }
h2 { margin: 0 0 1.25rem; font-size: clamp(1.35rem, 4vw, 1.85rem); line-height: 1.25; }
label { display: block; font-weight: 700; margin: 1rem 0 .4rem; }
input, textarea { width: 100%; min-height: 3rem; border: 1px solid #b8c9bc; border-radius: .7rem; padding: .75rem; font: inherit; color: inherit; background: #fff; }
textarea { min-height: 9rem; resize: vertical; }
input:focus, textarea:focus, button:focus { outline: 3px solid #9ed2a9; outline-offset: 2px; }
.choices { display: grid; gap: .65rem; }
.choice { text-align: left; background: #f4f8f4; border: 1px solid #c4d3c7; }
.choice.selected { background: #ddefdf; border-color: #39734f; }
button { border: 0; border-radius: .7rem; padding: .8rem 1rem; cursor: pointer; font: inherit; font-weight: 700; background: #dde7df; color: #17231c; }
button.primary { background: #39734f; color: white; }
button:disabled { opacity: .5; cursor: not-allowed; }
.actions { display: flex; justify-content: space-between; gap: 1rem; padding-top: 1rem; }
.status { min-height: 1.5rem; color: #9d2b20; font-weight: 700; }
.summary { white-space: pre-wrap; background: #f4f8f4; border-radius: .7rem; padding: 1rem; }
.file-note { color: #4e5b52; font-size: .9rem; }
@media (max-width: 42rem) { .brief-shell { padding: 1.25rem 1rem 1rem; } .actions { position: sticky; bottom: 0; padding: 1rem 0; background: #eff5f0ee; } .actions button { flex: 1; } }