:root {
    --tai-bg: #f4f7fb;
    --tai-surface: #ffffff;
    --tai-surface-soft: #f8fbff;
    --tai-ink: #10233d;
    --tai-muted: #607089;
    --tai-line: #dfe7f2;
    --tai-primary: #1769ff;
    --tai-primary-dark: #0b4fd3;
    --tai-cyan: #16b9d6;
    --tai-navy: #071829;
    --tai-success: #16a66a;
    --tai-shadow: 0 22px 60px rgba(15, 39, 77, .10);
    --tai-radius: 22px;
    --tai-header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--tai-ink);
    background: var(--tai-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
body > main { overflow: clip; }
img, video, canvas, svg { max-width: 100%; }
img { height: auto; }
a { color: inherit; }
a:hover { color: inherit; }
button, input, textarea, select { font: inherit; }

::selection { color: #fff; background: var(--tai-primary); }

/* Header --------------------------------------------------------------- */
.tai-header {
    position: relative;
    top: auto;
    z-index: 1040;
    min-height: var(--tai-header-height);
    border-bottom: 1px solid rgba(13, 45, 83, .08);
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 8px 30px rgba(25, 51, 84, .05);
    backdrop-filter: blur(18px);
}
.tai-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    min-height: var(--tai-header-height);
}
.tai-brand {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    text-decoration: none;
}
.tai-brand__site-logo {
    display: block;
    width: auto;
    height: 36px;
    object-fit: contain;
}
.tai-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: .2rem;
    margin-left: auto;
}
.tai-nav > a,
.tai-nav-dropdown__trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: .28rem;
    min-height: 46px;
    padding: 0 .82rem;
    border-radius: 12px;
    color: #31465f;
    font-size: .91rem;
    font-weight: 700;
    line-height: 1;
    text-decoration: none;
    transition: color .18s ease, background .18s ease, transform .18s ease;
}
.tai-nav > a:hover,
.tai-nav-dropdown__trigger:hover,
.tai-nav > a.is-active,
.tai-nav-dropdown__trigger.is-active {
    color: var(--tai-primary);
    background: #f0f6ff;
}
.tai-nav > a.is-active::after,
.tai-nav-dropdown__trigger.is-active::after {
    content: "";
    position: absolute;
    left: .8rem;
    right: .8rem;
    bottom: 2px;
    height: 2px;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--tai-primary), var(--tai-cyan));
}
.tai-nav__contact {
    margin-left: .45rem;
    padding-inline: 1.15rem !important;
    color: #fff !important;
    background: linear-gradient(135deg, var(--tai-primary), #3b82f6) !important;
    box-shadow: 0 9px 24px rgba(23, 105, 255, .22);
}
.tai-nav__contact:hover { transform: translateY(-1px); }
.tai-nav-dropdown { position: relative; }
.tai-nav-dropdown__menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    z-index: 1050;
    width: min(760px, 92vw);
    padding: 1rem;
    border: 1px solid var(--tai-line);
    border-radius: 20px;
    background: rgba(255, 255, 255, .98);
    box-shadow: 0 26px 70px rgba(13, 37, 70, .16);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -8px);
    transition: .18s ease;
}
.tai-nav-dropdown:hover .tai-nav-dropdown__menu,
.tai-nav-dropdown:focus-within .tai-nav-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}
.tai-nav-dropdown__menu--services-unified {
    width: min(520px, 92vw);
    display: grid;
    grid-template-columns: 1fr;
    gap: .9rem;
}
.tai-nav-dropdown__group {
    display: grid;
    gap: .35rem;
    align-content: start;
    padding: .65rem;
}
.tai-nav-dropdown__group > p {
    margin: 0 0 .25rem;
    color: #8292a7;
    font-size: .67rem;
    font-weight: 800;
    letter-spacing: .16em;
}
.tai-nav-dropdown__group > a {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: .55rem;
    padding: .58rem .7rem;
    border-radius: 11px;
    color: #21364f;
    font-size: .84rem;
    text-decoration: none;
}
.tai-nav-dropdown__group > a:hover,
.tai-nav-dropdown__group > a.is-active {
    color: var(--tai-primary);
    background: #f2f7ff;
}
.tai-nav-dropdown__group > a span {
    color: #8aa0b9;
    font-size: .68rem;
    font-weight: 800;
}
.tai-mobile-menu .offcanvas-header {
    min-height: 72px;
    border-bottom: 1px solid var(--tai-line);
}
.tai-mobile-menu .offcanvas-body { padding: 1rem 1.15rem 2rem; }
.tai-mobile-menu nav { display: grid; gap: .4rem; }
.tai-mobile-menu nav > a,
.tai-mobile-menu__dropdown {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 48px;
    padding: 0 .85rem;
    border: 0;
    border-radius: 12px;
    color: #243b55;
    background: transparent;
    font-weight: 700;
    text-align: left;
    text-decoration: none;
}
.tai-mobile-menu nav > a:hover,
.tai-mobile-menu nav > a.is-active,
.tai-mobile-menu__dropdown:hover,
.tai-mobile-menu__dropdown.is-active { color: var(--tai-primary); background: #f2f7ff; }
.tai-mobile-submenu {
    margin: .15rem 0 .65rem;
    padding: .45rem;
    border: 1px solid var(--tai-line);
    border-radius: 13px;
    background: #fbfdff;
}
.tai-mobile-submenu a {
    display: flex;
    gap: .45rem;
    padding: .55rem .6rem;
    border-radius: 9px;
    color: #455a72;
    font-size: .84rem;
    text-decoration: none;
}
.tai-mobile-submenu a:hover { color: var(--tai-primary); background: #f1f7ff; }
.tai-mobile-submenu__section {
    margin-top: .45rem;
    padding: .5rem .6rem .2rem;
    color: #8998aa;
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .08em;
}
.tai-menu-button {
    display: none;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--tai-line);
    border-radius: 12px;
    color: #18324f;
    background: #fff;
    font-size: 1.35rem;
}

/* Shared components ---------------------------------------------------- */
.tai-kicker,
.company-kicker,
.policy-kicker,
.ts-kicker,
.rs-kicker,
.solution-kicker,
.diagnosis-kicker,
.faq-kicker {
    margin: 0 0 .85rem;
    color: var(--tai-primary);
    font-size: .76rem;
    font-weight: 850;
    letter-spacing: .15em;
    text-transform: uppercase;
}
.tai-button,
.company-primary-btn,
.solution-btn-primary,
.diagnosis-primary-btn,
.rs-btn-primary,
.ts-action-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .55rem;
    min-height: 48px;
    padding: .72rem 1.15rem;
    border: 1px solid #cfd9e7;
    border-radius: 999px;
    color: #17324f;
    background: #fff;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(24, 52, 86, .06);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.tai-button:hover,
.company-primary-btn:hover,
.solution-btn-primary:hover,
.diagnosis-primary-btn:hover,
.rs-btn-primary:hover,
.ts-action-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(24, 52, 86, .12);
}
.tai-button--primary,
.company-primary-btn,
.solution-btn-primary,
.diagnosis-primary-btn,
.rs-btn-primary,
.ts-action-primary {
    border-color: transparent;
    color: #fff;
    background: linear-gradient(135deg, var(--tai-primary), #2f7df7);
}
.tai-button--light { border-color: rgba(255,255,255,.55); color: #fff; background: rgba(255,255,255,.12); }
.tai-section { padding: clamp(4.5rem, 8vw, 7.5rem) 0; }
.tai-section-heading,
.company-section-heading,
.pricing-section-head,
.solution-section-heading,
.ng-section-heading,
.section-heading {
    max-width: 760px;
    margin-bottom: 2.4rem;
}
.tai-section-heading h2,
.company-section-heading h2,
.pricing-section-head h2,
.solution-section-heading h2,
.ng-section-heading h2,
.section-heading h2 {
    margin: 0;
    color: #0d2745;
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 850;
    line-height: 1.18;
    letter-spacing: -.035em;
}
.tai-section-heading > p:last-child,
.company-section-heading > p:last-child,
.pricing-section-head > p:last-child,
.solution-section-heading > p:last-child,
.ng-section-heading > p:last-child,
.section-heading > p:last-child {
    margin: 1rem 0 0;
    color: var(--tai-muted);
    line-height: 1.9;
}
.hover-lift { transition: transform .2s ease, box-shadow .2s ease; }
.hover-lift:hover { transform: translateY(-4px); box-shadow: var(--tai-shadow) !important; }
.reveal-on-scroll,
.company-reveal,
.reveal-pricing,
.reveal-service,
.product-reveal,
.diagnosis-reveal,
.material-reveal {
    transition: opacity .5s ease, transform .5s ease;
}

/* Better defaults for Bootstrap-driven pages */
.card { border-color: var(--tai-line); }
.shadow-sm { box-shadow: 0 12px 32px rgba(24, 52, 86, .08) !important; }
.bg-body-tertiary, .bg-light { background-color: #f6f9fd !important; }
.text-secondary { color: #6a7b91 !important; }
.text-primary { color: var(--tai-primary) !important; }
.bg-primary { background-color: var(--tai-primary) !important; }
.btn-primary {
    border-color: var(--tai-primary);
    background: linear-gradient(135deg, var(--tai-primary), #347ff8);
    box-shadow: 0 9px 20px rgba(23, 105, 255, .17);
}
.btn-primary:hover { border-color: var(--tai-primary-dark); background: var(--tai-primary-dark); }
.btn-outline-primary { border-color: #9bbef7; color: #145de2; }
.btn-outline-primary:hover { border-color: var(--tai-primary); background: var(--tai-primary); color: #fff; }
.form-control, .form-select {
    border-color: #cfdbea;
    border-radius: 12px;
    box-shadow: none;
}
.form-control:focus, .form-select:focus {
    border-color: #71a4ff;
    box-shadow: 0 0 0 .22rem rgba(23, 105, 255, .12);
}
.accordion-item { overflow: hidden; border-color: var(--tai-line); }
.accordion-button:not(.collapsed) { color: #104cba; background: #eef5ff; box-shadow: none; }

@media (max-width: 991.98px) {
    :root { --tai-header-height: 68px; }
    .tai-nav { display: none; }
    .tai-menu-button { display: grid; }
    .tai-brand__site-logo { height: 32px; }
    .tai-header__inner { min-height: var(--tai-header-height); }
}

@media (max-width: 575.98px) {
    body { font-size: 15px; }
    .tai-section { padding: 4rem 0; }
    .tai-button,
    .company-primary-btn,
    .solution-btn-primary,
    .diagnosis-primary-btn,
    .rs-btn-primary,
    .ts-action-primary { width: 100%; }
}