/* Pure Amino — Research Partners page (affiliate / referral program).
   Editorial layout in the Branding-Deck style: paper-neutral, ink-black,
   axis rules, mono numerals, dot-trail decoration. Mirrors page-science
   structure but with its own data tables and tier blocks. */

:root {
    --rp-paper:    #E6E8EA;
    --rp-paper-2:  #DDDFE2;
    --rp-hairline: #B6B9BC;
    --rp-ink:      #141718;
    --rp-dim:      #5B5D5B;
}

body.page-template-page-research-partners {
    background: var(--rp-paper);
    color: var(--rp-ink);
}

.rp-wrap a { color: inherit; text-decoration: none; }
.rp-wrap .mono { font-family: var(--font-mono); font-size: 11px; }

.rp-wrap .axis-left {
    display: flex; align-items: center; gap: 12px;
    font-weight: 500; font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
}
.rp-wrap .axis-left::after { content: ''; flex: 1; height: 1px; background: currentColor; opacity: .55; }
.rp-wrap .axis-left .d { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* Buttons */
.rp-wrap .rp-btn {
    font-weight: 500; font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
    padding: 13px 22px;
    background: var(--rp-ink); color: var(--rp-paper);
    display: inline-flex; align-items: center; gap: 10px;
    transition: background .22s; border: 1px solid var(--rp-ink);
    cursor: pointer;
}
.rp-wrap .rp-btn:hover { background: #000; }
.rp-wrap .rp-btn.ghost { background: transparent; color: var(--rp-ink); }
.rp-wrap .rp-btn.ghost:hover { background: var(--rp-ink); color: var(--rp-paper); }
.rp-wrap .rp-btn .arr { transition: transform .22s; }
.rp-wrap .rp-btn:hover .arr { transform: translateX(4px); }

/* ── Hero ─────────────────────────────────────────────────────────────── */
.rp-hero {
    padding: 80px 40px 60px;
    border-bottom: 1px solid var(--rp-hairline);
    display: grid; grid-template-columns: 1.35fr 1fr; gap: 60px;
    align-items: flex-end;
    position: relative; overflow: hidden;
}
.rp-hero .crumb {
    display: flex; gap: 12px;
    font-size: 10.5px; letter-spacing: .22em; text-transform: uppercase; font-weight: 500;
    color: var(--rp-dim);
    margin-bottom: 28px;
}
.rp-hero h1 {
    font-family: var(--font-display); font-weight: 600;
    font-size: clamp(64px, 10vw, 160px);
    line-height: .88; letter-spacing: -.035em; text-transform: uppercase;
}
.rp-hero h1 em { font-style: normal; color: var(--ghk-core); }
.rp-hero .sub {
    font-family: var(--font-display); font-weight: 500;
    font-size: 22px; letter-spacing: -.01em; line-height: 1.3;
    max-width: 44ch; color: #333;
    margin-top: 22px; text-transform: none;
}

.rp-hero-stats {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0;
    border: 1px solid var(--rp-hairline);
}
.rp-hero-stats .cell {
    padding: 24px;
    border-right: 1px solid var(--rp-hairline);
    border-bottom: 1px solid var(--rp-hairline);
    background: var(--rp-paper);
}
.rp-hero-stats .cell:nth-child(2n) { border-right: none; }
.rp-hero-stats .cell:nth-last-child(-n+2) { border-bottom: none; }
.rp-hero-stats .k {
    display: block; font-size: 10px; letter-spacing: .22em; text-transform: uppercase;
    font-weight: 500; color: var(--rp-dim); margin-bottom: 14px;
}
.rp-hero-stats .v {
    display: block; font-family: var(--font-mono); font-size: 48px;
    line-height: 1; color: var(--rp-ink);
}
.rp-hero-stats .v sup { font-size: 24px; opacity: .6; }
.rp-hero-stats .m {
    display: block; font-size: 10px; letter-spacing: .18em; text-transform: uppercase;
    font-weight: 500; color: var(--rp-dim); margin-top: 14px;
}

/* ── Method (4-step program flow) ─────────────────────────────────────── */
.rp-method {
    display: grid; grid-template-columns: repeat(4, 1fr);
    border-bottom: 1px solid var(--rp-hairline);
}
.rp-method .m {
    padding: 40px 28px;
    border-right: 1px solid var(--rp-hairline);
    display: flex; flex-direction: column; gap: 14px;
}
.rp-method .m:last-child { border-right: none; }
.rp-method .m .num {
    font-family: var(--font-mono); font-size: 11px; color: var(--rp-dim);
}
.rp-method .m .t {
    font-family: var(--font-display); font-weight: 600;
    font-size: 22px; line-height: 1.05; letter-spacing: -.02em; text-transform: uppercase;
}
.rp-method .m .d {
    font-size: 13px; line-height: 1.6; color: var(--rp-dim);
    text-transform: none; letter-spacing: 0;
}

/* ── Tiers (Standard vs. Institutional) ───────────────────────────────── */
.rp-tiers {
    padding: 96px 40px;
    border-bottom: 1px solid var(--rp-hairline);
}
.rp-tiers-head {
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
    align-items: flex-end;
    margin-bottom: 56px;
}
.rp-tiers-head h2 {
    font-family: var(--font-display); font-weight: 600;
    font-size: clamp(40px, 6vw, 88px);
    line-height: .92; letter-spacing: -.03em; text-transform: uppercase;
}
.rp-tiers-head h2 em { font-style: normal; color: var(--nad-deep); }
.rp-tiers-head p {
    font-size: 14px; line-height: 1.65; color: var(--rp-dim);
    max-width: 48ch;
}

.rp-tiers-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
    border: 1px solid var(--rp-hairline);
}
.rp-tier {
    padding: 36px 32px 32px;
    border-right: 1px solid var(--rp-hairline);
    display: flex; flex-direction: column; gap: 18px;
    background: var(--rp-paper);
}
.rp-tier:last-child { border-right: none; }
.rp-tier .tier-head {
    display: flex; justify-content: space-between; align-items: flex-start;
}
.rp-tier .tier-name {
    font-family: var(--font-display); font-weight: 600;
    font-size: 28px; letter-spacing: -.025em; text-transform: uppercase;
}
.rp-tier .tier-name small {
    display: block; font-size: 11px; font-weight: 500; color: var(--rp-dim);
    letter-spacing: .22em; margin-bottom: 6px;
}
.rp-tier .tier-mono { font-family: var(--font-mono); font-size: 11px; color: var(--rp-dim); }
.rp-tier .tier-rate {
    font-family: var(--font-mono); font-size: 56px; line-height: 1;
    color: var(--rp-ink); margin-top: 8px;
}
.rp-tier .tier-rate sup { font-size: 18px; opacity: .5; }
.rp-tier .tier-rate .div { display: block; height: 1px; background: var(--rp-hairline); margin: 14px 0; }
.rp-tier ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.rp-tier ul li {
    font-size: 12.5px; line-height: 1.55; color: var(--rp-ink);
    padding-left: 18px; position: relative;
}
.rp-tier ul li::before {
    content: ''; position: absolute; left: 0; top: 8px;
    width: 6px; height: 6px; border-radius: 50%; background: var(--rp-ink);
}

/* ── Perks grid ───────────────────────────────────────────────────────── */
.rp-perks {
    padding: 96px 40px;
    background: var(--rp-paper-2);
    border-bottom: 1px solid var(--rp-hairline);
}
.rp-perks-head {
    display: grid; grid-template-columns: 1fr 2fr; gap: 60px;
    align-items: flex-end; margin-bottom: 56px;
}
.rp-perks-head h2 {
    font-family: var(--font-display); font-weight: 600;
    font-size: clamp(40px, 6vw, 88px);
    line-height: .92; letter-spacing: -.03em; text-transform: uppercase;
}
.rp-perks-head h2 em { font-style: normal; color: var(--glp-deep); }
.rp-perks-head p { font-size: 14px; line-height: 1.65; color: var(--rp-dim); max-width: 56ch; }

.rp-perks-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
    border-top: 1px solid var(--rp-hairline);
    border-left: 1px solid var(--rp-hairline);
}
.rp-perk {
    padding: 32px 28px;
    border-right: 1px solid var(--rp-hairline);
    border-bottom: 1px solid var(--rp-hairline);
    background: var(--rp-paper);
    display: flex; flex-direction: column; gap: 12px;
}
.rp-perk .num { font-family: var(--font-mono); font-size: 11px; color: var(--rp-dim); }
.rp-perk h4 {
    font-family: var(--font-display); font-weight: 600;
    font-size: 18px; line-height: 1.1; letter-spacing: -.02em; text-transform: uppercase;
}
.rp-perk p { font-size: 12.5px; line-height: 1.6; color: var(--rp-dim); }

/* ── Apply CTA ────────────────────────────────────────────────────────── */
.rp-apply {
    padding: 96px 40px;
    display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px;
    align-items: center;
    border-bottom: 1px solid var(--rp-hairline);
}
.rp-apply h2 {
    font-family: var(--font-display); font-weight: 600;
    font-size: clamp(48px, 7vw, 104px);
    line-height: .92; letter-spacing: -.035em; text-transform: uppercase;
}
.rp-apply h2 em { font-style: normal; color: var(--cat-recovery); }
.rp-apply p { font-size: 15px; line-height: 1.6; color: var(--rp-dim); margin-top: 22px; max-width: 44ch; }
.rp-apply .ctas { margin-top: 28px; display: flex; gap: 10px; flex-wrap: wrap; }

.rp-form {
    padding: 32px;
    border: 1px solid var(--rp-hairline);
    background: var(--rp-paper);
    display: flex; flex-direction: column; gap: 14px;
}
.rp-form .axis-left { margin-bottom: 6px; }
.rp-form label {
    font-size: 10px; letter-spacing: .22em; text-transform: uppercase;
    font-weight: 500; color: var(--rp-dim); margin-bottom: 4px;
}
.rp-form input, .rp-form select, .rp-form textarea {
    background: transparent;
    border: none; border-bottom: 1px solid var(--rp-hairline);
    padding: 10px 0;
    font-family: var(--font-body);
    /* 16px+ keeps iOS Safari from zooming on focus */
    font-size: 16px;
    color: var(--rp-ink);
    outline: none;
    width: 100%;
    min-height: 44px;
}
.rp-form input:focus, .rp-form select:focus, .rp-form textarea:focus {
    border-bottom-color: var(--rp-ink);
}
.rp-form .field { display: flex; flex-direction: column; }
.rp-form .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.rp-form .submit { margin-top: 8px; align-self: flex-start; }
.rp-form .legal {
    font-size: 11px; line-height: 1.6; color: var(--rp-dim);
    margin-top: 6px;
}

/* ── FAQ ──────────────────────────────────────────────────────────────── */
.rp-faq {
    padding: 96px 40px;
    border-bottom: 1px solid var(--rp-hairline);
}
.rp-faq h2 {
    font-family: var(--font-display); font-weight: 600;
    font-size: clamp(40px, 6vw, 88px);
    line-height: .92; letter-spacing: -.03em; text-transform: uppercase;
    margin-bottom: 48px;
}
.rp-faq h2 em { font-style: normal; color: var(--cat-aesthetics); }
.rp-faq-list {
    border-top: 1px solid var(--rp-hairline);
}
.rp-faq-item {
    border-bottom: 1px solid var(--rp-hairline);
    padding: 28px 0;
    display: grid; grid-template-columns: 60px 1fr 1.4fr; gap: 32px;
    align-items: flex-start;
}
.rp-faq-item .num {
    font-family: var(--font-mono); font-size: 11px; color: var(--rp-dim);
}
.rp-faq-item .q {
    font-family: var(--font-display); font-weight: 600;
    font-size: 18px; line-height: 1.2; letter-spacing: -.015em; text-transform: uppercase;
}
.rp-faq-item .a { font-size: 14px; line-height: 1.7; color: var(--rp-dim); }
.rp-faq-item .a strong { color: var(--rp-ink); }

/* ── Foot ─────────────────────────────────────────────────────────────── */
.rp-foot {
    padding: 80px 40px 40px;
    background: var(--rp-paper-2);
}
.rp-foot .mega {
    font-family: var(--font-display); font-weight: 600;
    font-size: clamp(120px, 22vw, 360px);
    line-height: .82; letter-spacing: -.05em; text-transform: uppercase;
    color: var(--rp-ink);
    margin-bottom: 40px;
}
.rp-foot .row {
    display: flex; justify-content: space-between;
    font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
    font-weight: 500; color: var(--rp-dim);
}

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .rp-hero { grid-template-columns: 1fr; gap: 40px; padding: 60px 28px 48px; }
    .rp-method { grid-template-columns: repeat(2, 1fr); }
    .rp-method .m:nth-child(2) { border-right: none; }
    .rp-method .m:nth-child(-n+2) { border-bottom: 1px solid var(--rp-hairline); }
    .rp-tiers, .rp-perks, .rp-apply, .rp-faq { padding: 64px 28px; }
    .rp-tiers-head, .rp-perks-head, .rp-apply { grid-template-columns: 1fr; gap: 40px; }
    .rp-perks-grid { grid-template-columns: repeat(2, 1fr); }
    .rp-faq-item { grid-template-columns: 40px 1fr; gap: 20px; }
    .rp-faq-item .a { grid-column: 1 / -1; padding-left: 0; }
}

@media (max-width: 640px) {
    .rp-hero, .rp-tiers, .rp-perks, .rp-apply, .rp-faq, .rp-foot { padding-left: 18px; padding-right: 18px; }
    .rp-hero { padding-top: 48px; padding-bottom: 36px; }
    .rp-tiers, .rp-perks, .rp-apply, .rp-faq { padding-top: 56px; padding-bottom: 56px; }
    .rp-tiers-grid, .rp-perks-grid { grid-template-columns: 1fr; }
    .rp-method { grid-template-columns: 1fr; }
    .rp-method .m { border-right: none; border-bottom: 1px solid var(--rp-hairline); padding: 28px 22px; }
    .rp-method .m:last-child { border-bottom: none; }
    .rp-hero-stats { grid-template-columns: 1fr; }
    .rp-hero-stats .cell { border-right: none; padding: 20px; }
    .rp-hero-stats .v { font-size: 40px; }
    .rp-hero h1 { font-size: clamp(48px, 13vw, 88px); }
    .rp-tier { padding: 28px 22px; }
    .rp-tier .tier-rate { font-size: 44px; }
    .rp-perk { padding: 24px 22px; }
    .rp-form { padding: 24px 20px; }
    .rp-form .grid-2 { grid-template-columns: 1fr; gap: 14px; }
    .rp-faq h2 { font-size: clamp(32px, 9vw, 56px); margin-bottom: 32px; }
    .rp-faq-item { padding: 22px 0; }
    .rp-foot .mega { font-size: clamp(96px, 30vw, 200px); }
    .rp-foot .row { flex-direction: column; gap: 8px; }
    .rp-btn { padding: 14px 22px; min-height: 44px; }
}