/* ================================================================
   ZENCAR - FRONT PAGE (v3 — mockup redesign)
   Card-based clean, bright green primary
   ================================================================ */

:root {
    --zc-green:       #22c55e;
    --zc-green-2:     #16a34a;
    --zc-green-3:     #15803d;
    --zc-green-soft:  #dcfce7;
    --zc-green-tint:  #f0fdf4;
    --zc-accent:      #7dc27b;   /* "an toàn" lighter mint-green, matches mockup */
    --zc-dark:        #0a2e1f;
    --zc-dark-2:      #0f3a26;
    --zc-ink:         #0f172a;
    --zc-ink-2:       #334155;
    --zc-mute:        #64748b;
    --zc-line:        #e5e7eb;
    --zc-line-2:      #d1d5db;
    --zc-bg:          #ffffff;
    --zc-bg-alt:      #f9fafb;

    --zc-radius:      12px;
    --zc-radius-lg:   16px;
    --zc-radius-xl:   20px;

    --zc-shadow-sm:   0 1px 2px rgba(15, 23, 42, 0.05);
    --zc-shadow:      0 4px 20px rgba(15, 23, 42, 0.06);
    --zc-shadow-lg:   0 20px 40px rgba(15, 23, 42, 0.08);

    --zc-container:   1280px;
}

/* ================================================================
   HEADER (sticky top)
   ================================================================ */
.zc-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: #fff;
    border-bottom: 1px solid var(--zc-line);
    font-family: "Be Vietnam Pro", system-ui, sans-serif;
}
.zc-header__inner {
    max-width: var(--zc-container);
    margin: 0 auto;
    padding: 20px 32px;
    display: flex;
    align-items: center;
    gap: 32px;
}
.zc-brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--zc-ink);
    flex: none;
}
.zc-brand__mark {
    font-weight: 900;
    font-size: 28px;
    letter-spacing: -0.03em;
    color: var(--zc-ink);
    font-family: "Be Vietnam Pro", system-ui, sans-serif;
}
.zc-brand img {
    max-height: 40px;
    width: auto;
}

.zc-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}
.zc-nav__list {
    display: flex;
    gap: 12px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.zc-nav__list > li { position: relative; }
.zc-nav__list a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 12px;
    color: var(--zc-ink);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 8px;
    transition: color .15s, background .15s;
}
.zc-nav__list a:hover { background: var(--zc-green-tint); color: var(--zc-green-3); }
.zc-nav__list li.menu-item-has-children > a::after,
.zc-nav__list li.zc-has-dropdown > a::after,
.zc-nav__list li:has(> ul) > a::after {
    content: "";
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg) translate(-2px, -2px);
    display: inline-block;
    margin-left: 4px;
    opacity: 0.6;
    transition: transform .2s;
}
.zc-nav__list li:hover > a::after { opacity: 1; }
.zc-nav__list ul.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius);
    box-shadow: var(--zc-shadow-lg);
    padding: 8px;
    list-style: none;
    margin: 8px 0 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-4px);
    transition: opacity .15s, transform .15s;
    z-index: 50;
}
.zc-nav__list li:hover > ul.sub-menu,
.zc-nav__list li:focus-within > ul.sub-menu {
    opacity: 1;
    pointer-events: auto;
    transform: none;
}
.zc-nav__list ul.sub-menu a {
    display: block;
    padding: 8px 12px;
    font-size: 14px;
    border-radius: 6px;
}

.zc-header__actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: none;
}
.zc-header__phone {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    background: var(--zc-green-tint);
    color: var(--zc-green-3);
    text-decoration: none;
}
.zc-header__phone:hover { background: var(--zc-green-soft); }

.zc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: 999px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: background .15s, color .15s, border-color .15s, transform .15s, box-shadow .15s;
    line-height: 1;
}
.zc-btn--primary {
    background: var(--zc-green);
    color: #fff;
    border-color: var(--zc-green);
    box-shadow: 0 4px 14px rgba(34, 197, 94, 0.28);
}
.zc-btn--primary:hover {
    background: var(--zc-green-2);
    border-color: var(--zc-green-2);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(34, 197, 94, 0.35);
}
.zc-btn--outline {
    background: transparent;
    color: var(--zc-ink);
    border-color: var(--zc-line-2);
}
.zc-btn--outline:hover {
    border-color: var(--zc-ink);
    color: var(--zc-ink);
    background: #fff;
}
.zc-btn--ghost {
    background: transparent;
    color: var(--zc-green-3);
    padding-inline: 4px;
}
.zc-btn--ghost:hover { color: var(--zc-green-2); }
.zc-btn--lg { padding: 14px 28px; font-size: 15px; }
.zc-btn--dark {
    background: var(--zc-dark);
    color: #fff;
    border-color: var(--zc-dark);
}
.zc-btn--dark:hover { background: var(--zc-dark-2); border-color: var(--zc-dark-2); color: #fff; }

.zc-nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-between;
}
.zc-nav-toggle span {
    display: block;
    height: 2px;
    background: var(--zc-ink);
    border-radius: 2px;
    transition: transform .2s, opacity .2s;
}

/* Mobile drawer */
.zc-nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 100;
    padding: 80px 24px 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s;
    overflow-y: auto;
}
.zc-nav-drawer.is-open {
    opacity: 1;
    pointer-events: auto;
}
.zc-nav-drawer__list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
}
.zc-nav-drawer__list a {
    display: block;
    padding: 14px 8px;
    font-size: 17px;
    font-weight: 500;
    color: var(--zc-ink);
    text-decoration: none;
    border-bottom: 1px solid var(--zc-line);
}
.zc-nav-drawer__cta { width: 100%; padding: 14px 24px; font-size: 15px; }

/* ================================================================
   FRONT PAGE — base + tokens scoped
   ================================================================ */
.front-page {
    background: #fff;
    color: var(--zc-ink);
    font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
.front-page * ,
.front-page *::before,
.front-page *::after { box-sizing: border-box; }
.front-page a { color: inherit; text-decoration: none; }
.front-page img { display: block; max-width: 100%; }
.front-page p { margin: 0; }
.front-page ul, .front-page ol { list-style: none; padding: 0; margin: 0; }
.front-page h1, .front-page h2, .front-page h3, .front-page h4 {
    margin: 0;
    color: var(--zc-ink);
    line-height: 1.2;
    letter-spacing: -0.015em;
    font-weight: 700;
}
.front-page h1 { font-size: 52px; line-height: 1.1; letter-spacing: -0.02em; font-weight: 800; }
.front-page h2 { font-size: 36px; letter-spacing: -0.02em; }
.front-page h3 { font-size: 22px; }
.front-page h4 { font-size: 17px; }

.zc-wrap {
    max-width: var(--zc-container);
    margin: 0 auto;
    padding: 0 24px;
}

.front-page section { padding: 80px 0; }

.zc-section-title {
    text-align: center;
    margin: 0 auto 48px;
    max-width: 720px;
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--zc-ink);
}
.zc-section-lead {
    text-align: center;
    max-width: 640px;
    margin: -32px auto 48px;
    color: var(--zc-mute);
    font-size: 16px;
}

/* Reset parent theme's .btn conflict inside .front-page */
.front-page .btn,
.front-page .zc-btn { border-radius: 999px; }

/* ================================================================
   HERO
   ================================================================ */
.front-page .zc-hero {
    background: linear-gradient(135deg, #f4faf5 0%, #eef7ef 45%, #e6f2e7 100%);
    padding: 80px 0 96px;
    position: relative;
    overflow: hidden;
}
.zc-hero__grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 48px;
    align-items: center;
}
.zc-hero__title {
    font-size: 68px;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.035em;
    color: var(--zc-ink);
    margin-bottom: 24px;
    max-width: 680px;
}
.zc-hero__title .accent { color: var(--zc-accent); }
.zc-hero__lead {
    font-size: 16px;
    color: var(--zc-mute);
    margin-bottom: 32px;
    max-width: 520px;
    line-height: 1.6;
}
.zc-hero__actions {
    display: flex;
    gap: 12px;
    margin-bottom: 56px;
    flex-wrap: wrap;
}
.zc-hero__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.zc-stat {
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: var(--zc-radius-lg);
    padding: 18px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    transition: transform .2s, box-shadow .2s;
}
.zc-stat:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08); }
.zc-stat__icon {
    flex: none;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    color: var(--zc-green-2);
    background: var(--zc-green-tint);
    border-radius: 10px;
}
.zc-stat__value {
    font-weight: 800;
    font-size: 22px;
    color: var(--zc-ink);
    line-height: 1;
    margin-bottom: 4px;
    letter-spacing: -0.015em;
}
.zc-stat__label {
    font-size: 12px;
    color: var(--zc-mute);
    line-height: 1.3;
    font-weight: 500;
}

.zc-hero__visual {
    position: relative;
    aspect-ratio: 4/5;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}
.zc-hero__visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.15);
}
.zc-hero__caption {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(10px);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
}

/* ================================================================
   TRUST BAR
   ================================================================ */
.zc-trust {
    background: #fff;
    padding: 32px 0;
    border-bottom: 1px solid var(--zc-line);
}
.zc-trust__inner {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: center;
}
.zc-trust__label {
    font-size: 13px;
    color: var(--zc-mute);
    font-weight: 500;
    max-width: 140px;
    line-height: 1.4;
    padding-right: 24px;
    border-right: 1px solid var(--zc-line);
}
.zc-trust__brands {
    display: flex;
    gap: 48px;
    align-items: center;
    flex-wrap: wrap;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #9ca3af;
    text-transform: uppercase;
}

/* ================================================================
   SOLUTIONS CHOOSE (3 cards)
   ================================================================ */
.zc-solutions { background: #fff; padding: 80px 0; }
.zc-solutions__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.zc-solution-card {
    display: block;
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    transition: transform .2s, box-shadow .2s, border-color .2s;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.zc-solution-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--zc-shadow-lg);
    border-color: var(--zc-green-soft);
}
.zc-solution-card__head {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    justify-content: space-between;
}
.zc-solution-card__body { flex: 1; }
.zc-solution-card__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--zc-ink);
    margin-bottom: 8px;
    line-height: 1.25;
}
.zc-solution-card__desc {
    font-size: 14px;
    color: var(--zc-mute);
    line-height: 1.55;
    margin-bottom: 16px;
}
.zc-solution-card__image {
    flex: none;
    width: 140px;
    aspect-ratio: 1;
    background: var(--zc-green-tint);
    border-radius: var(--zc-radius);
    overflow: hidden;
    display: grid;
    place-items: center;
}
.zc-solution-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.zc-solution-card__arrow {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    background: var(--zc-green-tint);
    color: var(--zc-green-2);
    transition: background .2s, color .2s, transform .2s;
    align-self: flex-start;
}
.zc-solution-card:hover .zc-solution-card__arrow {
    background: var(--zc-green);
    color: #fff;
    transform: translateX(4px);
}

/* ================================================================
   PRODUCTS (Sản phẩm bán chạy)
   ================================================================ */
.zc-products { background: var(--zc-bg-alt); padding: 80px 0; }
.zc-products__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.zc-product {
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: center;
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.zc-product:hover {
    transform: translateY(-2px);
    box-shadow: var(--zc-shadow);
    border-color: var(--zc-green-soft);
}
.zc-product__image {
    flex: none;
    width: 96px;
    aspect-ratio: 1;
    background: var(--zc-bg-alt);
    border-radius: var(--zc-radius);
    display: grid;
    place-items: center;
    padding: 8px;
    overflow: hidden;
}
.zc-product__image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.zc-product__body { flex: 1; min-width: 0; }
.zc-product__name {
    font-size: 18px;
    font-weight: 700;
    color: var(--zc-ink);
    margin-bottom: 8px;
    line-height: 1.3;
}
.zc-product__specs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.zc-chip {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    background: var(--zc-green-tint);
    color: var(--zc-green-3);
    font-size: 11px;
    font-weight: 600;
    border-radius: 999px;
}
.zc-chip--muted {
    background: var(--zc-bg-alt);
    color: var(--zc-mute);
}
.zc-product__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--zc-green-3);
    font-size: 14px;
    font-weight: 600;
}
.zc-product__link:hover { color: var(--zc-green-2); }

/* ================================================================
   FLAGSHIP BANNER (dark)
   ================================================================ */
.zc-flagship { padding: 80px 0; background: #fff; }
.zc-flagship__inner {
    position: relative;
    background: linear-gradient(135deg, #0a2e1f 0%, #113a29 55%, #062318 100%);
    border-radius: var(--zc-radius-xl);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    min-height: 380px;
    color: #fff;
}
.zc-flagship__body {
    padding: 56px 48px;
    position: relative;
    z-index: 2;
}
.zc-flagship__eyebrow {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--zc-green);
    background: rgba(34, 197, 94, 0.15);
    padding: 6px 12px;
    border-radius: 999px;
    margin-bottom: 20px;
}
.zc-flagship__title {
    font-size: 44px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}
.zc-flagship__specs {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    color: rgba(255,255,255,0.75);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 20px;
}
.zc-flagship__specs .dot {
    width: 4px;
    height: 4px;
    background: rgba(255,255,255,0.4);
    border-radius: 999px;
}
.zc-flagship__badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.zc-flagship__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 999px;
    font-size: 12px;
    color: rgba(255,255,255,0.85);
    background: rgba(255,255,255,0.05);
}
.zc-flagship__visual {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 55%;
    overflow: hidden;
    z-index: 1;
}
.zc-flagship__visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.9;
}
.zc-flagship__visual::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, #0a2e1f 0%, rgba(10,46,31,0.6) 30%, transparent 100%);
    z-index: 1;
}

/* ================================================================
   WHY CHOOSE ZENCAR (4 cards với icon xanh)
   ================================================================ */
.zc-why { background: #fff; padding: 80px 0; }
.zc-why__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.zc-why-card {
    padding: 24px;
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.zc-why-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--zc-shadow);
    border-color: var(--zc-green-soft);
}
.zc-why-card__icon {
    flex: none;
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    background: var(--zc-green-tint);
    color: var(--zc-green-2);
    border-radius: 12px;
}
.zc-why-card__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--zc-ink);
    margin-bottom: 4px;
    line-height: 1.3;
}
.zc-why-card__desc {
    font-size: 13px;
    color: var(--zc-mute);
    line-height: 1.5;
}

/* ================================================================
   FACTORY (Sản xuất tại KCN Quế Võ)
   ================================================================ */
.zc-factory { background: var(--zc-bg-alt); padding: 80px 0; }
.zc-factory__grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    align-items: center;
}
.zc-factory__title {
    font-size: 36px;
    font-weight: 800;
    color: var(--zc-ink);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    line-height: 1.15;
}
.zc-factory__desc {
    color: var(--zc-mute);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 32px;
    max-width: 420px;
}
.zc-factory__stats {
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: 32px;
    align-items: end;
}
.zc-factory__stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--zc-ink);
    line-height: 1;
    letter-spacing: -0.02em;
}
.zc-factory__stat-value small {
    font-size: 14px;
    color: var(--zc-mute);
    font-weight: 600;
    margin-left: 2px;
}
.zc-factory__stat-label {
    font-size: 13px;
    color: var(--zc-mute);
    margin-top: 6px;
}
.zc-factory__images {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 12px;
    height: 340px;
}
.zc-factory__images > *:first-child {
    grid-row: 1 / span 2;
}
.zc-factory__images .zc-photo {
    border-radius: var(--zc-radius);
    overflow: hidden;
    background: var(--zc-line);
}
.zc-factory__images .zc-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ================================================================
   COMPARISON TABLE
   ================================================================ */
.zc-compare { background: #fff; padding: 80px 0; }
.zc-compare__wrap {
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    overflow-x: auto;
}
.zc-compare table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 720px;
}
.zc-compare thead th {
    padding: 20px 16px;
    text-align: left;
    font-weight: 700;
    color: var(--zc-ink);
    background: var(--zc-bg-alt);
    border-bottom: 1px solid var(--zc-line);
}
.zc-compare thead th:first-child {
    background: transparent;
    font-size: 12px;
    color: var(--zc-mute);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.zc-compare thead th.zc-compare__best {
    background: var(--zc-green-tint);
    color: var(--zc-green-3);
    position: relative;
}
.zc-compare__best-tag {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    background: var(--zc-green);
    color: #fff;
    font-size: 10px;
    border-radius: 999px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    vertical-align: middle;
    font-weight: 700;
}
.zc-compare tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--zc-line);
    color: var(--zc-ink-2);
}
.zc-compare tbody td:first-child {
    color: var(--zc-mute);
    font-size: 13px;
    font-weight: 500;
}
.zc-compare tbody td.zc-compare__best {
    background: var(--zc-green-tint);
    font-weight: 600;
    color: var(--zc-ink);
}
.zc-compare tbody tr:last-child td { border-bottom: none; }

/* ================================================================
   CALCULATOR
   ================================================================ */
.zc-calc { background: var(--zc-bg-alt); padding: 80px 0; }
.zc-calc__inner {
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    overflow: hidden;
}
.zc-calc__title {
    font-size: 24px;
    font-weight: 800;
    color: var(--zc-ink);
    margin-bottom: 6px;
    line-height: 1.2;
}
.zc-calc__title small {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--zc-mute);
    margin-top: 4px;
}
.zc-calc__inputs {
    padding: 32px 36px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}
.zc-calc__field { display: flex; flex-direction: column; gap: 8px; }
.zc-calc__row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}
.zc-calc__label {
    font-size: 13px;
    font-weight: 600;
    color: var(--zc-ink-2);
}
.zc-calc__value {
    font-size: 14px;
    font-weight: 700;
    color: var(--zc-green-3);
}
.zc-calc__value--sm { color: var(--zc-mute); font-weight: 500; }
.zc-calc select {
    padding: 10px 14px;
    border: 1px solid var(--zc-line-2);
    border-radius: 10px;
    background: #fff;
    font-family: inherit;
    font-size: 14px;
    color: var(--zc-ink);
    cursor: pointer;
    width: 100%;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.zc-calc select:focus {
    border-color: var(--zc-green);
    box-shadow: 0 0 0 3px rgba(34,197,94,0.15);
}
.zc-calc input[type="range"] {
    width: 100%;
    accent-color: var(--zc-green-2);
}
.zc-calc__note {
    font-size: 12px;
    color: var(--zc-mute);
    line-height: 1.5;
}
.zc-calc__result {
    padding: 32px 36px;
    background: linear-gradient(135deg, #0a2e1f 0%, #113a29 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}
.zc-calc__result-label {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}
.zc-calc__result-value {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-top: 6px;
}
.zc-calc__result-value--brand { color: var(--zc-green); }
.zc-calc__result-unit {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-top: 4px;
}
.zc-calc__savings {
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

/* ================================================================
   PROJECTS (Dự án tiêu biểu + reviews)
   ================================================================ */
.zc-projects { background: #fff; padding: 80px 0; }
.zc-projects__grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 24px;
    align-items: stretch;
}
.zc-project-feature {
    background: var(--zc-bg-alt);
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.zc-project-feature__image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--zc-line);
}
.zc-project-feature__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.zc-project-feature__body { padding: 24px; }
.zc-project-feature__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--zc-ink);
    margin-bottom: 6px;
    line-height: 1.25;
}
.zc-project-feature__label {
    font-size: 13px;
    color: var(--zc-mute);
    margin-bottom: 18px;
}
.zc-project-feature__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding-top: 18px;
    border-top: 1px solid var(--zc-line);
}
.zc-project-stat__value {
    font-size: 22px;
    font-weight: 800;
    color: var(--zc-green-2);
    line-height: 1;
    letter-spacing: -0.01em;
}
.zc-project-stat__label {
    font-size: 12px;
    color: var(--zc-mute);
    margin-top: 6px;
}
.zc-reviews {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.zc-review {
    background: #fff;
    border: 1px solid var(--zc-line);
    border-radius: var(--zc-radius-lg);
    padding: 20px;
    display: flex;
    gap: 14px;
}
.zc-review__mark {
    flex: none;
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    background: var(--zc-green-tint);
    color: var(--zc-green-2);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 800;
    font-family: Georgia, serif;
}
.zc-review__body { flex: 1; min-width: 0; }
.zc-review__quote {
    font-size: 14px;
    color: var(--zc-ink-2);
    line-height: 1.55;
    margin-bottom: 12px;
}
.zc-review__author {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 12px;
    border-top: 1px solid var(--zc-line);
}
.zc-review__avatar {
    flex: none;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    overflow: hidden;
    background: var(--zc-green-tint);
    display: grid;
    place-items: center;
    font-weight: 700;
    color: var(--zc-green-3);
    font-size: 13px;
}
.zc-review__avatar img { width: 100%; height: 100%; object-fit: cover; }
.zc-review__name {
    font-size: 13px;
    font-weight: 700;
    color: var(--zc-ink);
    line-height: 1.2;
}
.zc-review__role {
    font-size: 11px;
    color: var(--zc-mute);
    margin-top: 2px;
}

/* ================================================================
   BOTTOM CONSULTATION BAR (dark green)
   ================================================================ */
.zc-cta-bar {
    background: linear-gradient(135deg, #0a2e1f 0%, #113a29 100%);
    color: #fff;
    padding: 28px 0;
    position: relative;
}
.zc-cta-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.zc-cta-bar__text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.zc-cta-bar__title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
}
.zc-cta-bar__desc {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.4;
    max-width: 640px;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1200px) {
    .zc-hero__title { font-size: 56px; }
}

@media (max-width: 1100px) {
    .zc-solutions__grid,
    .zc-products__grid { grid-template-columns: repeat(2, 1fr); }
    .zc-why__grid { grid-template-columns: repeat(2, 1fr); }
    .zc-hero__title { font-size: 48px; }
    .zc-hero__grid { grid-template-columns: 1fr; gap: 40px; }
    .zc-hero__visual { max-width: 480px; margin: 0 auto; width: 100%; aspect-ratio: 4/3; }
    .zc-projects__grid { grid-template-columns: 1fr; }
    .zc-factory__grid { grid-template-columns: 1fr; gap: 32px; }
    .zc-factory__images { height: 280px; }
    .zc-hero__stats { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 900px) {
    .front-page section { padding: 56px 0; }
    .front-page .zc-hero { padding: 48px 0 56px; }
    .front-page h1 { font-size: 34px; }
    .front-page h2 { font-size: 26px; }
    .zc-hero__title { font-size: 40px; letter-spacing: -0.02em; }
    .zc-hero__lead { font-size: 15px; }
    .zc-hero__stats { grid-template-columns: repeat(2, 1fr); }
    .zc-hero__actions { flex-direction: column; align-items: stretch; }
    .zc-hero__actions .zc-btn { justify-content: center; }
    .zc-section-title { font-size: 26px; margin-bottom: 36px; }
    .zc-solutions__grid,
    .zc-products__grid,
    .zc-why__grid { grid-template-columns: 1fr; }
    .zc-solution-card__head { flex-direction: column; }
    .zc-solution-card__image { width: 100%; aspect-ratio: 16/9; }
    .zc-flagship__inner { grid-template-columns: 1fr; min-height: 0; }
    .zc-flagship__visual { position: relative; width: 100%; height: 260px; }
    .zc-flagship__visual::before { background: linear-gradient(180deg, transparent 0%, #0a2e1f 100%); }
    .zc-flagship__body { padding: 32px 24px; }
    .zc-flagship__title { font-size: 32px; }
    .zc-factory__title { font-size: 26px; }
    .zc-factory__stats { grid-template-columns: 1fr 1fr; gap: 20px; }
    .zc-calc__inner { grid-template-columns: 1fr; }
    .zc-calc__inputs,
    .zc-calc__result { padding: 24px; }
    .zc-cta-bar__inner { flex-direction: column; text-align: center; gap: 16px; }

    /* Header mobile */
    .zc-nav,
    .zc-header__phone { display: none; }
    .zc-nav-toggle { display: flex; }
    .zc-header__inner { padding: 12px 16px; gap: 12px; }
}

@media (max-width: 640px) {
    .front-page h1 { font-size: 28px; }
    .zc-hero__title { font-size: 28px; }
    .zc-hero__stats { grid-template-columns: 1fr; }
    .zc-stat { padding: 14px; }
    .zc-trust__inner { gap: 20px; }
    .zc-trust__label { border-right: none; padding-right: 0; max-width: none; text-align: center; }
    .zc-trust__brands { gap: 20px; font-size: 12px; }
    .zc-product { flex-direction: column; text-align: center; align-items: center; }
    .zc-product__image { width: 100px; }
    .zc-flagship__title { font-size: 26px; }
    .zc-factory__images { grid-template-columns: 1fr; grid-template-rows: 200px 100px 100px; height: auto; }
    .zc-factory__images > *:first-child { grid-row: 1; grid-column: 1; }
}