*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --nv-bg: #f4f6f1;
    --nv-card: #ffffff;
    --nv-sage: #5e7558;
    --nv-sage-dk: #4b6046;
    --nv-sage-sf: #eef2ea;
    --nv-ink: #292e27;
    --nv-mute: #5c6358;
    --nv-line: #dfe4d9;
    --nv-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --nv-r-s: 6px;
    --nv-r-m: 10px;
    --nv-r-l: 16px;
    --nv-sh-s: 0 2px 8px rgba(41, 46, 39, .06);
}

html { scroll-behavior: smooth; }

body {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    background: var(--nv-bg);
    font-family: var(--nv-sans);
    color: var(--nv-ink);
    font-size: 16px;
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--nv-sage);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color .18s ease;
}
a:hover { color: var(--nv-sage-dk); }

/* ---------- shared shell ---------- */
.n-wrap {
    width: 100%;
    max-width: 980px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ---------- header ---------- */
.nv_top {
    background: var(--nv-card);
    border-bottom: 1px solid var(--nv-line);
}
.nv_top .n-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 60px;
    padding-top: 10px;
    padding-bottom: 10px;
}
.nv_top_logo {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--nv-ink);
    text-decoration: none;
}
.nv_top_logo:hover { color: var(--nv-sage); }
.nv_top_pay {
    font-size: 13px;
    font-weight: 600;
    color: var(--nv-mute);
    text-align: right;
}
@media (max-width: 420px) {
    .nv_top_logo { font-size: 16px; letter-spacing: .05em; }
    .nv_top_pay { font-size: 11.5px; }
}

/* ---------- paper head ---------- */
.nv_paper_head {
    max-width: 760px;
    margin: 0 auto;
    padding: 48px 16px 0;
}
.nv_paper_title {
    font-size: clamp(25px, 4.1vw, 40px);
    font-weight: 700;
    line-height: 1.26;
    letter-spacing: -.01em;
    color: var(--nv-ink);
}
.nv_paper_date {
    display: inline-block;
    margin-top: 16px;
    padding: 5px 13px;
    border-radius: 999px;
    background: var(--nv-sage-sf);
    border: 1px solid var(--nv-line);
    font-size: 12.5px;
    font-weight: 600;
    color: var(--nv-mute);
}

/* ---------- question / answer flow ---------- */
.nv_qa {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 10px 16px 56px;
}
.nv_qa_block {
    padding: 28px 0 4px;
    border-top: 1px solid var(--nv-line);
}
.nv_qa_block:first-child { border-top: none; }
.nv_qa_q {
    font-size: clamp(19px, 2.6vw, 25px);
    font-weight: 700;
    line-height: 1.34;
    color: var(--nv-sage-dk);
    margin: 0 0 12px;
}
.nv_qa_a p {
    margin: 0 0 12px;
    color: var(--nv-mute);
}
.nv_qa_a p:last-child { margin-bottom: 0; }
.nv_qa_a strong { color: var(--nv-ink); font-weight: 700; }

.nv_mark {
    margin: 16px 0 4px;
    padding: 16px 18px;
    background: var(--nv-card);
    border: 1px solid var(--nv-line);
    border-left: 4px solid var(--nv-sage);
    border-radius: 0 var(--nv-r-m) var(--nv-r-m) 0;
    box-shadow: var(--nv-sh-s);
}
.nv_mark p {
    margin: 0;
    font-size: 15px;
    color: var(--nv-ink);
}

.nv_close {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 16px 52px;
}
.nv_close_box {
    padding: 18px 20px;
    border: 1px solid var(--nv-line);
    border-radius: var(--nv-r-l);
    background: var(--nv-card);
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--nv-mute);
}

/* ---------- footer ---------- */
.nv_base {
    margin-top: auto;
    flex-shrink: 0;
    background: var(--nv-card);
    border-top: 1px solid var(--nv-line);
    padding: 26px 0 28px;
    text-align: center;
}
.nv_base_nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 20px;
    margin-bottom: 14px;
}
.nv_base_nav a {
    font-size: 12.5px;
    color: var(--nv-sage);
    text-decoration: none;
    border-bottom: 1px solid rgba(94, 117, 88, .4);
    padding-bottom: 1px;
}
.nv_base_nav a:hover {
    color: var(--nv-sage-dk);
    border-bottom-color: var(--nv-sage-dk);
}
.nv_base_copy {
    font-size: 12.5px;
    color: var(--nv-mute);
    margin-bottom: 10px;
}
.nv_base_legal {
    max-width: 740px;
    margin: 0 auto;
    font-size: 11.5px;
    line-height: 1.75;
    color: #78806f;
}

@media (max-width: 520px) {
    .nv_paper_head { padding-top: 34px; }
    .nv_qa_block { padding-top: 22px; }
    body { font-size: 15.5px; }
}