/* =====================================================
   PROTEIN CALCULATOR METHODOLOGY
===================================================== */

.tpc-methodology {
    padding: 100px 0;
    background:
        radial-gradient(circle at 92% 8%, rgba(34, 197, 94, .11), transparent 28%),
        #ffffff;
}

.tpc-methodology__header {
    max-width: 850px;
    margin: 0 auto 44px;
    text-align: center;
}

.tpc-methodology__eyebrow,
.tpc-methodology__step {
    display: inline-block;
    margin-bottom: 10px;
    color: #15803d;
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
}

.tpc-methodology__header h2 {
    margin: 0 0 18px;
    color: #111827;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
}

.tpc-methodology__header p {
    color: #5b6472;
    font-size: 1.08rem;
    line-height: 1.8;
}

.tpc-methodology__formula {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    max-width: 1180px;
    margin: 0 auto 34px;
    padding: 26px 30px;
    color: #f0fdf4;
    background: #123c2a;
    border-radius: 20px;
    box-shadow: 0 18px 40px rgba(18, 60, 42, .15);
}

.tpc-methodology__formula .tpc-methodology__step {
    color: #86efac;
}

.tpc-methodology__formula p {
    margin: 0;
    font-size: 1.1rem;
}

.tpc-methodology__formula strong {
    color: #ffffff;
}

.tpc-methodology__conversion {
    max-width: 390px;
    padding-left: 28px;
    border-left: 1px solid rgba(255, 255, 255, .22);
    color: #cfe9d9;
    font-size: .96rem !important;
}

.tpc-methodology__layout {
    display: grid;
    grid-template-columns: minmax(0, 1.75fr) minmax(310px, .75fr);
    gap: 30px;
    max-width: 1180px;
    margin: 0 auto;
    align-items: start;
}

.tpc-methodology__main {
    display: grid;
    gap: 24px;
}

.tpc-methodology__card,
.tpc-methodology__example,
.tpc-methodology__safety {
    background: #ffffff;
    border: 1px solid #e4e9e6;
    border-radius: 22px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .055);
}

.tpc-methodology__card {
    padding: 32px;
}

.tpc-methodology__card-heading {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 26px;
}

.tpc-methodology__number {
    display: grid;
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    place-items: center;
    color: #166534;
    background: #dcfce7;
    border-radius: 12px;
    font-weight: 800;
}

.tpc-methodology__card h3,
.tpc-methodology__example h3,
.tpc-methodology__safety h3,
.tpc-methodology__sources h3 {
    margin: 0 0 7px;
    color: #111827;
    font-size: 1.32rem;
    line-height: 1.35;
}

.tpc-methodology__card-heading p,
.tpc-methodology__example p,
.tpc-methodology__safety p,
.tpc-methodology__sources p,
.tpc-methodology__body-copy {
    margin: 0;
    color: #5b6472;
    line-height: 1.75;
}

.tpc-methodology__table-wrap {
    overflow-x: auto;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
}

.tpc-methodology__table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.tpc-methodology__table th,
.tpc-methodology__table td {
    padding: 16px 18px;
    border-bottom: 1px solid #e5e7eb;
}

.tpc-methodology__table th {
    color: #374151;
    background: #f3f7f4;
    font-size: .82rem;
    letter-spacing: .035em;
    text-transform: uppercase;
}

.tpc-methodology__table td {
    color: #394150;
}

.tpc-methodology__table td:last-child {
    color: #166534;
    white-space: nowrap;
}

.tpc-methodology__table tr:last-child td {
    border-bottom: 0;
}

.tpc-methodology__rda-note {
    margin-top: 20px;
    padding: 18px 20px;
    background: #f7faf8;
    border-left: 4px solid #22c55e;
    border-radius: 0 12px 12px 0;
    color: #374151;
}

.tpc-methodology__rda-note p {
    margin: 6px 0 0;
    color: #5b6472;
    line-height: 1.7;
}

.tpc-methodology__factors {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.tpc-methodology__factor {
    padding: 18px;
    background: #f8faf9;
    border: 1px solid #e6ebe8;
    border-radius: 14px;
}

.tpc-methodology__factor h4 {
    margin: 0 0 6px;
    color: #1f2937;
    font-size: 1rem;
}

.tpc-methodology__factor p {
    margin: 0;
    color: #616b78;
    font-size: .94rem;
    line-height: 1.65;
}

.tpc-methodology__aside {
    display: grid;
    gap: 24px;
    position: sticky;
    top: 104px;
}

.tpc-methodology__example {
    padding: 30px;
    color: #ffffff;
    background: #173f2e;
    border-color: #173f2e;
}

.tpc-methodology__example .tpc-methodology__eyebrow {
    color: #86efac;
}

.tpc-methodology__example h3,
.tpc-methodology__example p {
    color: #ffffff;
}

.tpc-methodology__math {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin: 18px 0;
    padding: 15px 0;
    border-top: 1px solid rgba(255, 255, 255, .16);
    border-bottom: 1px solid rgba(255, 255, 255, .16);
    color: #d7e9df;
}

.tpc-methodology__math + .tpc-methodology__math {
    margin-top: -19px;
    border-top: 0;
}

.tpc-methodology__math strong {
    color: #86efac;
    white-space: nowrap;
}

.tpc-methodology__example p {
    font-size: .93rem;
    opacity: .84;
}

.tpc-methodology__safety {
    padding: 28px;
    background: #fffdf6;
    border-color: #eee6c9;
}

.tpc-methodology__safety p + p {
    margin-top: 14px;
}

.tpc-methodology__sources {
    max-width: 1180px;
    margin: 30px auto 0;
    padding: 26px 30px;
    background: #f7faf8;
    border: 1px solid #e4e9e6;
    border-radius: 18px;
}

.tpc-methodology__sources ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 28px;
    margin: 18px 0 0;
    padding-left: 20px;
}

.tpc-methodology__sources li {
    color: #15803d;
}

.tpc-methodology__sources a {
    color: #166534;
    font-weight: 650;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.tpc-methodology__sources a:hover {
    color: #0f5132;
}

@media (max-width: 992px) {
    .tpc-methodology__layout {
        grid-template-columns: 1fr;
    }

    .tpc-methodology__aside {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        position: static;
    }
}

@media (max-width: 768px) {
    .tpc-methodology {
        padding: 70px 0;
    }

    .tpc-methodology__header {
        margin-bottom: 32px;
    }

    .tpc-methodology__formula {
        display: block;
        padding: 24px;
    }

    .tpc-methodology__conversion {
        max-width: none;
        margin-top: 18px !important;
        padding: 18px 0 0;
        border-top: 1px solid rgba(255, 255, 255, .22);
        border-left: 0;
    }

    .tpc-methodology__card {
        padding: 24px;
    }

    .tpc-methodology__factors,
    .tpc-methodology__aside,
    .tpc-methodology__sources ul {
        grid-template-columns: 1fr;
    }

    .tpc-methodology__sources {
        padding: 24px;
    }
}

@media (max-width: 520px) {
    .tpc-methodology__table th,
    .tpc-methodology__table td {
        padding: 14px 13px;
        font-size: .88rem;
    }

    .tpc-methodology__math {
        display: grid;
    }
}

@media (prefers-reduced-motion: reduce) {
    .tpc-methodology * {
        scroll-behavior: auto;
    }
}