.aai {
    --aai-accent: var(--primary, #176b5b);
    --aai-accent-strong: var(--primary, #105347);
    --aai-surface: var(--background, #fff);
    --aai-muted-surface: #f5f7f7;
    --aai-border: rgba(27, 45, 42, .14);
    --aai-muted: #63706d;
    --aai-shadow: 0 14px 40px rgba(24, 44, 40, .08);
    color: inherit;
    max-width: 1180px;
    margin-inline: auto;
}

.aai *, .aai *::before, .aai *::after { box-sizing: border-box; }
.aai button, .aai input, .aai select { font: inherit; }
.aai [hidden], .aai__back-to-top[hidden] { display: none !important; }

.aai__hero {
    position: relative;
    overflow: hidden;
    padding: clamp(1.5rem, 4vw, 3.25rem);
    border: 1px solid var(--aai-border);
    border-radius: 24px;
    background:
        radial-gradient(circle at 92% 12%, rgba(23, 107, 91, .16), transparent 26rem),
        linear-gradient(145deg, #fff, #f7fbfa);
    box-shadow: var(--aai-shadow);
}

.aai__hero-decoration {
    position: absolute;
    width: 230px;
    height: 230px;
    right: -100px;
    bottom: -125px;
    border: 34px solid rgba(23, 107, 91, .08);
    border-radius: 50%;
    pointer-events: none;
}

.aai__eyebrow {
    margin: 0 0 .45rem;
    color: var(--aai-accent);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.aai__title {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.05;
    letter-spacing: -.04em;
}

.aai__lead {
    max-width: 760px;
    margin: .85rem 0 1.6rem;
    color: var(--aai-muted);
    font-size: clamp(1rem, 2vw, 1.12rem);
    line-height: 1.7;
}

.aai__search-wrap {
    position: relative;
    max-width: 780px;
}

.aai__search {
    width: 100%;
    min-height: 58px;
    padding: .9rem 3.25rem .9rem 3rem;
    border: 1px solid var(--aai-border);
    border-radius: 15px;
    background: #fff;
    color: inherit;
    box-shadow: 0 8px 24px rgba(23, 47, 43, .06);
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.aai__search:focus {
    outline: none;
    border-color: var(--aai-accent);
    box-shadow: 0 0 0 4px rgba(23, 107, 91, .13), 0 10px 28px rgba(23, 47, 43, .08);
}

.aai__search-icon {
    position: absolute;
    z-index: 1;
    left: 1rem;
    top: 50%;
    width: 21px;
    height: 21px;
    transform: translateY(-50%);
    fill: none;
    stroke: var(--aai-muted);
    stroke-width: 2;
    stroke-linecap: round;
}

.aai__clear {
    position: absolute;
    right: .75rem;
    top: 50%;
    width: 34px;
    height: 34px;
    transform: translateY(-50%);
    border: 0;
    border-radius: 50%;
    background: var(--aai-muted-surface);
    color: inherit;
    cursor: pointer;
}

.aai__stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .85rem;
    margin-top: 1.4rem;
}

.aai__stat {
    display: flex;
    align-items: baseline;
    gap: .55rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--aai-border);
    border-radius: 14px;
    background: rgba(255, 255, 255, .84);
}

.aai__stat strong { color: var(--aai-accent-strong); font-size: 1.45rem; }
.aai__stat span { color: var(--aai-muted); font-size: .9rem; }
.aai__year-range { margin: 1rem 0 0; color: var(--aai-muted); font-size: .88rem; }

.aai__toolbar {
    margin-top: 1.4rem;
    padding: 1.2rem;
    border: 1px solid var(--aai-border);
    border-radius: 18px;
    background: var(--aai-surface);
}

.aai__alphabet {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--aai-border);
}

.aai__letter {
    min-width: 38px;
    min-height: 38px;
    padding: .45rem .65rem;
    border: 1px solid var(--aai-border);
    border-radius: 10px;
    background: transparent;
    color: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: .18s ease;
}

.aai__letter:hover:not(:disabled), .aai__letter:focus-visible, .aai__letter.is-active {
    border-color: var(--aai-accent);
    background: var(--aai-accent);
    color: #fff;
    outline: none;
    transform: translateY(-1px);
}

.aai__letter.is-disabled { opacity: .32; cursor: not-allowed; }

.aai__filters {
    display: grid;
    grid-template-columns: minmax(150px, .8fr) minmax(130px, .55fr) minmax(220px, 1.2fr);
    gap: .9rem;
    margin-top: 1rem;
}

.aai__field { display: grid; gap: .35rem; color: var(--aai-muted); font-size: .82rem; font-weight: 700; }
.aai__field select {
    width: 100%;
    min-height: 43px;
    padding: .55rem .8rem;
    border: 1px solid var(--aai-border);
    border-radius: 10px;
    background: #fff;
    color: inherit;
}
.aai__field select:focus { outline: 3px solid rgba(23, 107, 91, .13); border-color: var(--aai-accent); }

.aai__status-row { display: flex; justify-content: space-between; gap: 1rem; align-items: center; margin-top: 1rem; }
.aai__status { margin: 0; color: var(--aai-muted); }
.aai__reset { border: 0; background: transparent; color: var(--aai-accent); font-weight: 700; cursor: pointer; }

.aai__group { margin-top: 2.1rem; }
.aai__group-heading { display: flex; align-items: baseline; gap: .75rem; margin-bottom: .9rem; }
.aai__group-heading h2 { margin: 0; color: var(--aai-accent); font-size: 2rem; line-height: 1; }
.aai__group-heading span { color: var(--aai-muted); font-size: .88rem; }
.aai__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }

.aai__card {
    min-width: 0;
    padding: 1.25rem;
    border: 1px solid var(--aai-border);
    border-radius: 17px;
    background: var(--aai-surface);
    box-shadow: 0 6px 24px rgba(24, 44, 40, .045);
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.aai__card:hover { transform: translateY(-2px); border-color: rgba(23, 107, 91, .35); box-shadow: 0 12px 32px rgba(24, 44, 40, .09); }
.aai__card-header { display: flex; align-items: center; gap: .9rem; }
.aai__avatar {
    display: grid;
    place-items: center;
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(145deg, var(--aai-accent), var(--aai-accent-strong));
    color: #fff;
    font-weight: 800;
    letter-spacing: .03em;
}
.aai__identity { min-width: 0; }
.aai__identity h3 { margin: 0; font-size: 1.08rem; line-height: 1.35; overflow-wrap: anywhere; }
.aai__article-count { margin: .25rem 0 0; color: var(--aai-muted); font-size: .86rem; }

.aai__affiliations { display: flex; align-items: flex-start; gap: .55rem; margin-top: 1rem; color: var(--aai-muted); }
.aai__affiliations svg { flex: 0 0 18px; width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.aai__affiliations ul { margin: 0; padding: 0; list-style: none; font-size: .88rem; line-height: 1.45; }
.aai__affiliations li + li { margin-top: .25rem; }

.aai__orcid {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    margin-top: .85rem;
    color: inherit;
    font-size: .86rem;
    text-decoration: none;
}
.aai__orcid:hover { color: var(--aai-accent); text-decoration: underline; }
.aai__orcid-mark { display: inline-grid; place-items: center; width: 25px; height: 25px; border-radius: 50%; background: #a6ce39; color: #fff; font-size: .72rem; font-weight: 800; }

.aai__publications { margin-top: 1rem; border-top: 1px solid var(--aai-border); }
.aai__publications summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: .75rem;
    padding-top: .95rem;
    color: var(--aai-accent);
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}
.aai__publications summary::-webkit-details-marker { display: none; }
.aai__publications summary svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; transition: transform .2s ease; }
.aai__publications[open] summary svg { transform: rotate(180deg); }
.aai__publications ol { margin: .85rem 0 0; padding-left: 1.25rem; }
.aai__publications li { padding: .55rem 0; line-height: 1.45; }
.aai__publications li + li { border-top: 1px dashed var(--aai-border); }
.aai__publications a { font-weight: 650; overflow-wrap: anywhere; }
.aai__article-meta { display: flex; flex-wrap: wrap; gap: .4rem .7rem; margin-top: .25rem; color: var(--aai-muted); font-size: .78rem; }

.aai__no-results, .aai__empty { margin-top: 1.5rem; padding: 3rem 1.25rem; border: 1px dashed var(--aai-border); border-radius: 18px; text-align: center; background: var(--aai-muted-surface); }
.aai__no-results h2, .aai__empty h2 { margin: .4rem 0; }
.aai__no-results p, .aai__empty p { margin: 0; color: var(--aai-muted); }
.aai__no-results-icon { color: var(--aai-accent); font-size: 2.5rem; }

.aai__load-wrap { display: flex; justify-content: center; margin-top: 1.5rem; }
.aai__load-more {
    min-height: 46px;
    padding: .7rem 1.25rem;
    border: 1px solid var(--aai-accent);
    border-radius: 12px;
    background: var(--aai-accent);
    color: #fff;
    font-weight: 750;
    cursor: pointer;
}
.aai__load-more:hover { background: var(--aai-accent-strong); }

.aai__back-to-top {
    position: fixed;
    z-index: 50;
    right: 1.2rem;
    bottom: 1.2rem;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 50%;
    background: var(--aai-accent, #176b5b);
    color: #fff;
    box-shadow: 0 10px 28px rgba(0, 0, 0, .18);
    cursor: pointer;
}

@media (max-width: 820px) {
    .aai__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .aai__filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .aai__field--wide { grid-column: 1 / -1; }
    .aai__grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
    .aai__hero { padding: 1.3rem; border-radius: 18px; }
    .aai__stats { gap: .55rem; }
    .aai__stat { display: grid; gap: .1rem; padding: .8rem; }
    .aai__toolbar { padding: .9rem; }
    .aai__alphabet { max-height: 152px; overflow: auto; }
    .aai__filters { grid-template-columns: 1fr; }
    .aai__field--wide { grid-column: auto; }
    .aai__status-row { align-items: flex-start; flex-direction: column; }
    .aai__card { padding: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    .aai *, .aai *::before, .aai *::after { scroll-behavior: auto !important; transition: none !important; }
}