/* =========================================================
   filtros.css — Filtros Industriales
   Prefix: .fi-  |  Defany Industrial
   ========================================================= */

/* Container */
.fi-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Badges */
.fi-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #D5EBF8;
    color: #1B6CA8;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 100px;
    margin-bottom: 14px;
}
.fi-badge--inv {
    background: rgba(255,255,255,.18);
    color: #fff;
}
.fi-badge--light {
    background: rgba(213,235,248,.18);
    color: #D5EBF8;
}
.fi-badge--gold {
    background: rgba(255,200,50,.15);
    color: #FFD966;
    border: 1px solid rgba(255,200,50,.3);
}

/* Buttons */
.fi-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 6px;
    font-family: 'Poppins', sans-serif;
    font-size: .88rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all .2s;
    line-height: 1;
}
.fi-btn--primary { background: #1B6CA8; color: #fff; }
.fi-btn--primary:hover { background: #155a8c; transform: translateY(-1px); }
.fi-btn--wa { background: #25D366; color: #fff; }
.fi-btn--wa:hover { background: #1eba57; transform: translateY(-1px); }
.fi-btn--light { background: #fff; color: #02042B; }
.fi-btn--light:hover { background: #e8f4fd; }
.fi-btn--outline-light { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.6); }
.fi-btn--outline-light:hover { background: rgba(255,255,255,.1); }
.fi-btn--outline-inv { background: transparent; color: #1B6CA8; border: 2px solid #1B6CA8; }
.fi-btn--outline-inv:hover { background: #1B6CA8; color: #fff; }
.fi-btn--sm { padding: 10px 18px; font-size: .82rem; }

/* Section headers */
.fi-section-header {
    text-align: center;
    margin-bottom: 48px;
}
.fi-section-header h2 {
    font-size: 2rem;
    color: #02042B;
    margin: 0 0 10px;
    line-height: 1.2;
}
.fi-section-header p {
    color: #555;
    max-width: 660px;
    margin: 0 auto;
    font-size: .95rem;
}
.fi-section-header--inv h2 { color: #fff; }
.fi-section-header--inv p { color: rgba(255,255,255,.8); }
.fi-section-line {
    width: 50px;
    height: 3px;
    background: #1B6CA8;
    margin: 12px auto 18px;
    border-radius: 2px;
}
.fi-section-line--inv { background: rgba(255,255,255,.5); }

/* Animations */
.fi-reveal { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
.fi-reveal--left { opacity: 0; transform: translateX(-30px); transition: opacity .6s ease, transform .6s ease; }
.fi-reveal--right { opacity: 0; transform: translateX(30px); transition: opacity .6s ease, transform .6s ease; }
.fi-visible { opacity: 1 !important; transform: none !important; }

/* Shared product grid */
.fi-product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}
.fi-product-grid--alt { direction: rtl; }
.fi-product-grid--alt > * { direction: ltr; }
.fi-product__img-wrap {
    background: #F7F9FC;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    border: 1px solid #e8edf2;
}
.fi-product__img-wrap img {
    max-width: 100%;
    max-height: 320px;
    object-fit: contain;
}

/* Feature list */
.fi-feats-col { display: flex; flex-direction: column; gap: 8px; margin: 16px 0 24px; }
.fi-feat {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: .88rem;
    color: #333;
}
.fi-feat i { color: #25D366; margin-top: 2px; flex-shrink: 0; }

/* Spec rows */
.fi-serie-e__specs {
    background: #F7F9FC;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #e0e8ef;
    margin: 20px 0;
}
.fi-spec-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    font-size: .86rem;
    border-bottom: 1px solid #e8edf2;
}
.fi-spec-row:last-child { border-bottom: none; }
.fi-spec-row span { color: #555; }
.fi-spec-row strong { color: #02042B; text-align: right; }

/* =========================================================
   S1: INTRO
   ========================================================= */
.fi-intro {
    padding: 80px 0 72px;
    background: #fff;
}
.fi-intro__grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 52px;
    align-items: start;
}
.fi-intro__text h2 {
    font-size: 2.1rem;
    color: #02042B;
    margin: 0 0 18px;
    line-height: 1.2;
}
.fi-intro__lead {
    font-size: 1rem;
    color: #333;
    line-height: 1.7;
    margin-bottom: 14px;
}
.fi-intro__text p { font-size: .92rem; color: #555; line-height: 1.7; margin-bottom: 14px; }
.fi-intro__checks {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
    margin: 20px 0 28px;
}
.fi-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: .86rem;
    color: #333;
}
.fi-check i { color: #1B6CA8; margin-top: 2px; flex-shrink: 0; }
.fi-intro__btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* Why box */
.fi-intro__why {
    background: #02042B;
    border-radius: 14px;
    overflow: hidden;
    padding: 28px 24px;
}
.fi-why__title {
    font-size: .88rem;
    font-weight: 700;
    color: #FFD966;
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.fi-why__item {
    display: flex;
    gap: 14px;
    margin-bottom: 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.fi-why__item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.fi-why__icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: .9rem;
}
.fi-why__icon--bad { background: rgba(220,53,69,.25); color: #ff7070; }
.fi-why__item div strong { display: block; color: #fff; font-size: .88rem; margin-bottom: 4px; }
.fi-why__item div p { color: rgba(255,255,255,.6); font-size: .82rem; line-height: 1.5; margin: 0; }

/* =========================================================
   S2: ¿POR QUÉ DEFANY?
   ========================================================= */
.fi-porque {
    padding: 80px 0;
    background: #02042B;
}
.fi-porque__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.fi-por {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 12px;
    padding: 28px 24px;
    transition: background .2s, transform .2s;
}
.fi-por:hover { background: rgba(255,255,255,.1); transform: translateY(-3px); }
.fi-por__icon {
    width: 52px;
    height: 52px;
    background: rgba(27,108,168,.35);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #D5EBF8;
    margin-bottom: 18px;
}
.fi-por h3 { font-size: .98rem; color: #fff; margin: 0 0 10px; }
.fi-por p { font-size: .85rem; color: rgba(255,255,255,.65); line-height: 1.6; margin: 0; }

/* =========================================================
   S3: SERIE CA — PRODUCTO PRINCIPAL
   ========================================================= */
.fi-ca {
    padding: 80px 0;
    background: #F7F9FC;
}
.fi-ca__hero {
    text-align: center;
    margin-bottom: 52px;
}
.fi-ca__hero h2 {
    font-size: 2rem;
    color: #02042B;
    margin: 0 0 12px;
    line-height: 1.2;
}
.fi-ca__subtitle {
    font-size: .95rem;
    color: #555;
    max-width: 820px;
    display: block;
    margin: 0 auto;
    line-height: 1.7;
}
.fi-ca__grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 52px;
    align-items: start;
    margin-bottom: 52px;
}
.fi-ca__img-wrap {
    background: #fff;
    border-radius: 14px;
    padding: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    border: 1px solid #e0e8ef;
    box-shadow: 0 4px 20px rgba(2,4,43,.06);
}
.fi-ca__img-wrap img {
    max-width: 100%;
    max-height: 340px;
    object-fit: contain;
    cursor: zoom-in;
}
.fi-ca__brand-tag {
    text-align: center;
    margin-top: 14px;
    font-size: .8rem;
    color: #1B6CA8;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.fi-ca__content h3 {
    font-size: 1.1rem;
    color: #02042B;
    margin: 0 0 12px;
}
.fi-ca__content > p {
    font-size: .9rem;
    color: #555;
    line-height: 1.7;
    margin-bottom: 12px;
}
.fi-ca__specs-table {
    margin: 22px 0;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #e0e8ef;
}
.fi-ca__specs-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: .84rem;
}
.fi-ca__specs-table th {
    background: #02042B;
    color: #fff;
    text-align: left;
    padding: 10px 14px;
    font-weight: 600;
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.fi-ca__specs-table td {
    padding: 9px 14px;
    border-bottom: 1px solid #e8edf2;
    color: #333;
}
.fi-ca__specs-table tr:last-child td { border-bottom: none; }
.fi-ca__specs-table tr:nth-child(even) td { background: #f4f6f8; }
.fi-ca__feats {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 16px 0 24px;
}

/* Aplicaciones CA */
.fi-ca__apps { text-align: center; }
.fi-ca__apps h3 {
    font-size: 1.1rem;
    color: #02042B;
    margin: 0 0 24px;
}
.fi-ca__apps-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.fi-ca__app {
    background: #fff;
    border: 1px solid #e0e8ef;
    border-radius: 50px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .85rem;
    color: #333;
    font-weight: 500;
}
.fi-ca__app i { color: #1B6CA8; }

/* =========================================================
   S4: DIAGRAMA
   ========================================================= */
.fi-diagrama {
    padding: 80px 0;
    background: #fff;
}
.fi-diagrama__flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
    margin-bottom: 52px;
    background: #F7F9FC;
    border-radius: 16px;
    padding: 40px 32px;
    border: 1px solid #e0e8ef;
}
.fi-flow__step {
    text-align: center;
    padding: 20px 24px;
    border-radius: 12px;
    min-width: 180px;
    flex: 1;
    max-width: 220px;
}
.fi-flow__step--source { background: rgba(213,235,248,.4); }
.fi-flow__step--filter { background: #1B6CA8; color: #fff; }
.fi-flow__step--equip { background: rgba(213,235,248,.4); }
.fi-flow__step--result { background: rgba(37,211,102,.12); }
.fi-flow__icon {
    font-size: 2rem;
    margin-bottom: 10px;
}
.fi-flow__step--filter .fi-flow__icon { color: #fff; }
.fi-flow__step--source .fi-flow__icon { color: #1B6CA8; }
.fi-flow__step--equip .fi-flow__icon { color: #1B6CA8; }
.fi-flow__step--result .fi-flow__icon { color: #25D366; }
.fi-flow__label {
    font-size: .95rem;
    font-weight: 700;
    color: #02042B;
    margin-bottom: 6px;
}
.fi-flow__step--filter .fi-flow__label { color: #fff; }
.fi-flow__sub {
    font-size: .78rem;
    color: #555;
    line-height: 1.4;
}
.fi-flow__step--filter .fi-flow__sub { color: rgba(255,255,255,.8); }
.fi-flow__arrow {
    font-size: 1.5rem;
    color: #1B6CA8;
    padding: 0 8px;
    flex-shrink: 0;
}

.fi-diagrama__facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.fi-fact {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: #F7F9FC;
    border-radius: 12px;
    padding: 24px;
    border: 1px solid #e0e8ef;
}
.fi-fact__icon {
    width: 44px;
    height: 44px;
    background: #D5EBF8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #1B6CA8;
    flex-shrink: 0;
}
.fi-fact div strong { display: block; color: #02042B; font-size: .88rem; margin-bottom: 6px; }
.fi-fact div p { color: #555; font-size: .83rem; line-height: 1.6; margin: 0; }

/* =========================================================
   S5: SERIE ESY
   ========================================================= */
.fi-esy {
    padding: 80px 0;
    background: #F7F9FC;
}
.fi-esy .fi-product__text h2 {
    font-size: 1.6rem;
    color: #02042B;
    margin: 10px 0 14px;
    line-height: 1.2;
}
.fi-esy .fi-product__text > p {
    font-size: .9rem;
    color: #555;
    line-height: 1.7;
    margin-bottom: 14px;
}
.fi-esy__variants { display: flex; flex-direction: column; gap: 16px; margin: 24px 0; }
.fi-var {
    background: #fff;
    border-radius: 10px;
    padding: 18px 20px;
    border-left: 4px solid #1B6CA8;
    border: 1px solid #e0e8ef;
    border-left-width: 4px;
    border-left-color: #1B6CA8;
}
.fi-var__name {
    font-size: .88rem;
    font-weight: 800;
    color: #1B6CA8;
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 6px;
}
.fi-var > p { font-size: .85rem; color: #555; line-height: 1.6; margin: 0 0 10px; }
.fi-var__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.fi-var__tags span {
    background: #D5EBF8;
    color: #1B6CA8;
    font-size: .75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 100px;
}
.fi-esy .fi-product__text h3 {
    font-size: .98rem;
    color: #02042B;
    margin: 20px 0 12px;
}

/* =========================================================
   S6: SERIE E
   ========================================================= */
.fi-serie-e {
    padding: 80px 0;
    background: #fff;
}
.fi-serie-e .fi-product__text h2 {
    font-size: 1.6rem;
    color: #02042B;
    margin: 10px 0 14px;
    line-height: 1.2;
}
.fi-serie-e .fi-product__text > p {
    font-size: .9rem;
    color: #555;
    line-height: 1.7;
    margin-bottom: 14px;
}
.fi-serie-e .fi-product__text h3 {
    font-size: .98rem;
    color: #02042B;
    margin: 20px 0 12px;
}

/* =========================================================
   S7: SERIE CB
   ========================================================= */
.fi-serie-cb {
    padding: 80px 0;
    background: #F7F9FC;
}
.fi-serie-cb .fi-product__text h2 {
    font-size: 1.6rem;
    color: #02042B;
    margin: 10px 0 14px;
    line-height: 1.2;
}
.fi-serie-cb .fi-product__text > p {
    font-size: .9rem;
    color: #555;
    line-height: 1.7;
    margin-bottom: 14px;
}
.fi-serie-cb .fi-product__text h3 {
    font-size: .98rem;
    color: #02042B;
    margin: 20px 0 12px;
}

/* =========================================================
   S8: COMPARATIVA
   ========================================================= */
.fi-comp {
    padding: 80px 0;
    background: #02042B;
}
.fi-comp__wrap { overflow-x: auto; }
.fi-comp__table {
    width: 100%;
    border-collapse: collapse;
    font-size: .86rem;
    white-space: nowrap;
}
.fi-comp__table thead tr { background: rgba(255,255,255,.08); }
.fi-comp__table th {
    color: #D5EBF8;
    text-align: left;
    padding: 14px 16px;
    font-weight: 700;
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    border-bottom: 2px solid rgba(255,255,255,.15);
}
.fi-comp__table td {
    padding: 13px 16px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    color: rgba(255,255,255,.8);
    vertical-align: top;
    white-space: normal;
}
.fi-comp__table tr:last-child td { border-bottom: none; }
.fi-comp__table tr:hover td { background: rgba(255,255,255,.04); }
.fi-comp__series {
    font-weight: 800;
    color: #D5EBF8 !important;
    font-size: .95rem;
    white-space: nowrap;
}

/* =========================================================
   S9: OTRAS MARCAS
   ========================================================= */
.fi-marcas {
    padding: 80px 0;
    background: #F7F9FC;
}
.fi-marcas__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.fi-marca {
    background: #fff;
    border-radius: 14px;
    border: 1px solid #e0e8ef;
    overflow: hidden;
    box-shadow: 0 3px 14px rgba(2,4,43,.05);
}
.fi-marca__header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 22px;
}
.fi-marca__header--arm { background: #02042B; }
.fi-marca__header--dewit { background: #1B4A2B; }
.fi-marca__header--watson { background: #1a2f5e; }
.fi-marca__logo-area {
    width: 42px;
    height: 42px;
    background: rgba(255,255,255,.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
    flex-shrink: 0;
}
.fi-marca__header h3 { color: #fff; font-size: .98rem; margin: 0 0 2px; }
.fi-marca__header span { color: rgba(255,255,255,.6); font-size: .75rem; }
.fi-marca > p {
    padding: 16px 22px 8px;
    font-size: .85rem;
    color: #555;
    line-height: 1.6;
}
.fi-marca__list {
    list-style: none;
    padding: 0 22px 22px;
    margin: 0;
}
.fi-marca__list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    border-top: 1px solid #f0f3f6;
    font-size: .83rem;
}
.fi-marca__list li > i { color: #1B6CA8; margin-top: 2px; flex-shrink: 0; }
.fi-marca__list li div strong { display: block; color: #02042B; margin-bottom: 2px; }
.fi-marca__list li div span { color: #666; }

/* =========================================================
   S10: SELECTOR
   ========================================================= */
.fi-sel {
    padding: 80px 0;
    background: #02042B;
}
.fi-sel__card {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 16px;
    padding: 40px;
    max-width: 860px;
    margin: 0 auto;
}
.fi-sel__fields {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 28px;
}
.fi-sel__group { display: flex; flex-direction: column; gap: 7px; }
.fi-sel__group label {
    font-size: .8rem;
    font-weight: 600;
    color: rgba(255,255,255,.7);
    text-transform: uppercase;
    letter-spacing: .05em;
}
.fi-sel__group select,
.fi-sel__group input {
    padding: 11px 14px;
    border-radius: 7px;
    border: 1.5px solid rgba(255,255,255,.2);
    background: rgba(255,255,255,.07);
    color: #fff;
    font-family: 'Poppins', sans-serif;
    font-size: .88rem;
    outline: none;
    transition: border-color .2s, background .2s;
}
.fi-sel__group select:focus,
.fi-sel__group input:focus {
    border-color: #1B6CA8;
    background: rgba(255,255,255,.1);
}
.fi-sel__group select option { background: #02042B; color: #fff; }
.fi-sel__group input::placeholder { color: rgba(255,255,255,.4); }
.fi-sel__actions { text-align: center; margin-bottom: 24px; }
.fi-sel__result {
    background: rgba(255,255,255,.08);
    border-radius: 10px;
    padding: 24px;
    margin-top: 20px;
    border: 1px solid rgba(255,255,255,.15);
}
.fi-sel__result-label {
    font-size: .8rem;
    font-weight: 700;
    color: #D5EBF8;
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 7px;
}
.fi-sel__result-text {
    font-family: 'Courier New', monospace;
    font-size: .88rem;
    color: #fff;
    white-space: pre-wrap;
    margin: 0 0 16px;
    line-height: 1.8;
    background: rgba(0,0,0,.2);
    padding: 16px;
    border-radius: 8px;
}
.fi-sel__confirm {
    text-align: center;
    padding: 30px 20px;
}
.fi-sel__confirm-icon { font-size: 2.5rem; color: #25D366; margin-bottom: 12px; }
.fi-sel__confirm > p { color: rgba(255,255,255,.85); margin: 0 0 20px; }
.fi-sel__confirm-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* =========================================================
   S11: MANTENIMIENTO
   ========================================================= */
.fi-mant {
    padding: 80px 0;
    background: #fff;
}
.fi-mant__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.fi-mant__card {
    background: #F7F9FC;
    border-radius: 12px;
    padding: 28px 24px;
    border: 1px solid #e0e8ef;
    transition: box-shadow .2s;
}
.fi-mant__card:hover { box-shadow: 0 6px 22px rgba(2,4,43,.08); }
.fi-mant__icon {
    width: 50px;
    height: 50px;
    background: #D5EBF8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #1B6CA8;
    margin-bottom: 18px;
}
.fi-mant__card h3 { font-size: .98rem; color: #02042B; margin: 0 0 12px; }
.fi-mant__card p { font-size: .85rem; color: #555; line-height: 1.7; margin: 0; }

/* =========================================================
   S12: FAQ
   ========================================================= */
.fi-faq {
    padding: 80px 0;
    background: #02042B;
}
.fi-faq__list {
    max-width: 860px;
    margin: 0 auto;
}
.fi-faq__item {
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.fi-faq__q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    padding: 18px 0;
    font-family: 'Poppins', sans-serif;
    font-size: .92rem;
    font-weight: 600;
    color: rgba(255,255,255,.88);
    cursor: pointer;
    text-align: left;
    gap: 16px;
    transition: color .2s;
    line-height: 1.4;
}
.fi-faq__q:hover { color: #D5EBF8; }
.fi-faq__q i { font-size: .8rem; flex-shrink: 0; transition: transform .3s; }
.fi-faq__item.is-open .fi-faq__q { color: #D5EBF8; }
.fi-faq__item.is-open .fi-faq__q i { transform: rotate(180deg); }
.fi-faq__a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease;
}
.fi-faq__item.is-open .fi-faq__a { max-height: 500px; }
.fi-faq__a p {
    font-size: .87rem;
    color: rgba(255,255,255,.65);
    line-height: 1.75;
    margin: 0 0 18px;
    padding-right: 32px;
}
.fi-faq__a strong { color: rgba(255,255,255,.88); }

/* =========================================================
   S13: CTA FINAL
   ========================================================= */
.fi-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1B6CA8 0%, #02042B 100%);
}
.fi-cta__inner {
    text-align: center;
    max-width: 740px;
    margin: 0 auto;
}
.fi-cta__inner h2 { font-size: 2rem; color: #fff; margin: 0 0 16px; }
.fi-cta__inner > p { font-size: .95rem; color: rgba(255,255,255,.82); max-width: 600px; margin: 0 auto 36px; line-height: 1.7; }
.fi-cta__btns {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 36px;
}
.fi-cta__related {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding-top: 28px;
    border-top: 1px solid rgba(255,255,255,.2);
}
.fi-cta__related span { color: rgba(255,255,255,.5); font-size: .82rem; }
.fi-cta__related a {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,.78);
    text-decoration: none;
    font-size: .85rem;
    transition: color .2s;
}
.fi-cta__related a:hover { color: #fff; }
.fi-cta__related a i { font-size: .8rem; }

/* =========================================================
   LIGHTBOX
   ========================================================= */
.fi-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s;
}
.fi-lightbox.is-open { opacity: 1; pointer-events: auto; }
.fi-lightbox__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.82);
}
.fi-lightbox__box {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    text-align: center;
}
.fi-lightbox__img {
    max-width: 80vw;
    max-height: 75vh;
    border-radius: 10px;
    object-fit: contain;
}
.fi-lightbox__caption {
    color: rgba(255,255,255,.7);
    font-size: .82rem;
    margin-top: 12px;
}
.fi-lightbox__close {
    position: absolute;
    top: -18px;
    right: -18px;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #fff;
    border: none;
    font-size: 1rem;
    color: #02042B;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s;
}
.fi-lightbox__close:hover { background: #f0f0f0; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
    .fi-intro__grid { grid-template-columns: 1fr; }
    .fi-intro__side { order: -1; }
    .fi-porque__grid { grid-template-columns: repeat(2, 1fr); }
    .fi-ca__grid { grid-template-columns: 1fr; }
    .fi-ca__img-col { max-width: 480px; margin: 0 auto; }
    .fi-product-grid, .fi-product-grid--alt { grid-template-columns: 1fr; direction: ltr; }
    .fi-marcas__grid { grid-template-columns: 1fr; }
    .fi-diagrama__facts { grid-template-columns: 1fr; }
    .fi-mant__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .fi-intro__checks { grid-template-columns: 1fr; }
    .fi-porque__grid { grid-template-columns: 1fr; }
    .fi-mant__grid { grid-template-columns: 1fr; }
    .fi-sel__fields { grid-template-columns: 1fr; }
    .fi-diagrama__flow { flex-direction: column; gap: 16px; padding: 24px; }
    .fi-flow__arrow { transform: rotate(90deg); }
    .fi-flow__step { max-width: 100%; width: 100%; }
    .fi-section-header h2 { font-size: 1.6rem; }
    .fi-ca__hero h2 { font-size: 1.6rem; }
    .fi-cta__inner h2 { font-size: 1.6rem; }
    .fi-intro__text h2 { font-size: 1.7rem; }
    .fi-sel__card { padding: 24px 18px; }
    .fi-intro__btns { flex-direction: column; }
    .fi-cta__btns { flex-direction: column; align-items: center; }
    .fi-comp__table { min-width: 700px; }
}

@media (max-width: 480px) {
    .fi-container { padding: 0 16px; }
    .fi-intro, .fi-porque, .fi-ca, .fi-diagrama, .fi-esy, .fi-serie-e,
    .fi-serie-cb, .fi-comp, .fi-marcas, .fi-sel, .fi-mant, .fi-faq, .fi-cta {
        padding: 56px 0;
    }
    .fi-btn { padding: 11px 20px; }
}