:root {
    --gptc-bg: #f5f7fb;
    --gptc-surface: #ffffff;
    --gptc-surface-soft: #f8fafc;
    --gptc-border: #dbe3ef;
    --gptc-border-strong: #c6d3e3;
    --gptc-text: #0f172a;
    --gptc-text-soft: #475569;
    --gptc-primary: #2563eb;
    --gptc-primary-dark: #1d4ed8;
    --gptc-accent: #e8f0ff;
    --gptc-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
    --gptc-radius: 24px;
    --gptc-radius-md: 18px;
    --gptc-radius-sm: 14px;
    --gptc-shell: min(1380px, calc(100vw - 32px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: linear-gradient(180deg, #f9fbff 0%, #f4f7fb 100%);
    color: var(--gptc-text);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}
a {
    color: var(--gptc-text);
    text-decoration: none;
}
a:hover { color: var(--gptc-primary-dark); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font: inherit; }
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.gptc-shell { width: var(--gptc-shell); margin: 0 auto; }
.gptc-section { padding: 32px 0; }
.gptc-stack-lg { display: grid; gap: 24px; }
.stack-sm { display: grid; gap: 12px; }
.gptc-card,
.filter-card,
.metric-card,
.term-hero,
.auth-card,
.tool-hero,
.tool-side-card {
    background: var(--gptc-surface);
    border: 1px solid var(--gptc-border);
    border-radius: var(--gptc-radius);
    box-shadow: var(--gptc-shadow);
}
.gptc-prose { color: var(--gptc-text); }
.gptc-prose h1,
.gptc-prose h2,
.gptc-prose h3 { line-height: 1.12; letter-spacing: -0.03em; margin: 0 0 14px; }
.gptc-prose p,
.gptc-prose li { color: var(--gptc-text-soft); }
.gptc-prose ul,
.gptc-prose ol { padding-left: 22px; }
.gptc-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gptc-primary);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 12px;
    font-weight: 800;
}
.gptc-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--gptc-text-soft);
    font-size: 14px;
    margin-bottom: 18px;
}
.gptc-breadcrumbs a { color: var(--gptc-text-soft); }
.gptc-breadcrumbs span::before,
.gptc-breadcrumbs a + span::before,
.gptc-breadcrumbs a + a::before { content: '/'; margin-right: 8px; opacity: 0.55; }
.gptc-button {
    appearance: none;
    border: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 999px;
    background: var(--gptc-primary);
    color: #ffffff;
    font-weight: 700;
    transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease, color .2s ease;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.18);
}
.gptc-button:hover { background: var(--gptc-primary-dark); color: #ffffff; transform: translateY(-1px); }
.gptc-button--ghost {
    background: #ffffff;
    color: var(--gptc-text);
    border: 1px solid var(--gptc-border-strong);
    box-shadow: none;
}
.gptc-button--ghost:hover { color: var(--gptc-primary-dark); background: #f8fbff; }
.gptc-button--soft { background: #edf4ff; color: var(--gptc-primary-dark); box-shadow: none; }
.gptc-button--soft:hover { background: #dbeafe; color: var(--gptc-primary-dark); }
.gptc-button--small { min-height: 38px; padding: 0 14px; font-size: .92rem; }
.hero-search,
.filter-card input,
.filter-card select,
.filter-card textarea,
.report-form input,
.report-form select,
.report-form textarea,
.auth-card input,
.auth-card textarea,
.auth-card select,
.auth-card .input,
.catalog-toolbar input,
.catalog-toolbar select {
    width: 100%;
    min-height: 48px;
    border: 1px solid var(--gptc-border);
    background: #ffffff;
    color: var(--gptc-text);
    border-radius: 16px;
    padding: 0 16px;
    transition: border-color .2s ease, box-shadow .2s ease;
}
textarea {
    padding-top: 14px !important;
    padding-bottom: 14px !important;
    min-height: 120px !important;
}
input:focus,
select:focus,
textarea:focus,
button:focus,
a:focus {
    outline: 0;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
    border-color: rgba(37, 99, 235, 0.45);
}
.section-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: end;
    margin-bottom: 18px;
}
.section-head h2 { margin: 6px 0 0; font-size: clamp(1.5rem, 2vw, 2.1rem); line-height: 1.05; letter-spacing: -0.04em; }
.section-head--browser { align-items: center; }
.section-subtitle { margin: 8px 0 0; color: var(--gptc-text-soft); }
.metric-card {
    padding: 22px;
    display: grid;
    gap: 10px;
    min-height: 128px;
}
.metric-card span { color: var(--gptc-text-soft); font-size: .95rem; }
.metric-card strong { font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1; letter-spacing: -0.04em; }
.cards-grid { display: grid; gap: 18px; }
.cards-grid--tools { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.gptc-card { position: relative; overflow: hidden; }
.gptc-card__link-cover { position: absolute; inset: 0; z-index: 4; }
.gptc-card__media {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: linear-gradient(135deg, #ecf4ff 0%, #dbeafe 50%, #e0e7ff 100%);
}
.gptc-card__media img { width: 100%; height: 100%; object-fit: cover; }
.gptc-card__media--placeholder {
    display: grid;
    place-items: center;
    color: var(--gptc-primary-dark);
    font-weight: 800;
    font-size: 2rem;
    letter-spacing: -0.05em;
}
.gptc-card__body { position: relative; z-index: 5; padding: 22px; }
.gptc-card__body h3 { margin: 0 0 10px; font-size: 1.14rem; line-height: 1.15; letter-spacing: -0.03em; }
.gptc-card__body p { margin: 0; color: var(--gptc-text-soft); }
.gptc-card__footer {
    position: relative;
    z-index: 5;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding: 0 22px 22px;
}
.gptc-card__meta { color: var(--gptc-text-soft); font-size: 0.87rem; display: inline-flex; margin-bottom: 12px; }
.gptc-card--tool { display: flex; flex-direction: column; min-height: 100%; }
.gptc-card--tool .gptc-card__body { flex: 1 1 auto; }
.gptc-tags-row,
.tool-card__badges,
.tool-badges,
.tag-cloud-row,
.term-chip-grid {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0;
    padding: 0;
}
.gptc-tags-row { margin-bottom: 14px; }
.gptc-tags-row--soft { margin-top: 16px; margin-bottom: 0; }
.gptc-tag {
    position: relative;
    z-index: 5;
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: #edf4ff;
    border: 1px solid #d5e3fb;
    color: var(--gptc-primary-dark);
    font-size: 0.86rem;
    font-weight: 600;
}
.gptc-tag--soft {
    background: #f8fafc;
    border-color: var(--gptc-border);
    color: var(--gptc-text-soft);
}
.tool-card__badges { gap: 10px; margin-top: 16px; }
.tool-card__badges li,
.tool-badges li {
    display: inline-grid;
    gap: 4px;
    min-width: 122px;
    padding: 12px 14px;
    border-radius: 16px;
    background: #f8fbff;
    border: 1px solid #d9e7fb;
}
.tool-card__badges li span,
.tool-badges li span { color: var(--gptc-text-soft); font-size: 0.78rem; }
.tool-card__badges li strong,
.tool-badges li strong { color: var(--gptc-text); font-size: 0.94rem; }
.term-chip-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.term-chip {
    appearance: none;
    cursor: pointer;
    text-align: left;
    padding: 18px 18px 16px;
    border-radius: 18px;
    border: 1px solid var(--gptc-border);
    background: var(--gptc-surface);
    box-shadow: var(--gptc-shadow);
    display: grid;
    gap: 6px;
}
.term-chip strong { font-size: 1rem; line-height: 1.2; color: var(--gptc-text); }
.term-chip em { font-style: normal; color: var(--gptc-text-soft); font-size: .9rem; }
.term-chip__taxonomy { font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; color: var(--gptc-primary); font-weight: 800; }
.term-chip.is-active,
.tag-pill.is-active { border-color: rgba(37, 99, 235, 0.45); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12); }
.term-chip-grid--compact { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.term-chip--compact { padding: 14px 16px; box-shadow: none; }
.tag-cloud-row { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-pill {
    appearance: none;
    cursor: pointer;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--gptc-border);
    background: #ffffff;
    color: var(--gptc-text-soft);
    font-weight: 600;
}
.catalog-toolbar {
    display: grid;
    grid-template-columns: minmax(280px, 1fr) repeat(2, minmax(180px, 220px)) auto auto;
    gap: 12px;
    align-items: center;
    margin-bottom: 18px;
}
.catalog-toolbar__search { grid-column: 1 / 2; }
.catalog-more { margin-top: 22px; display: flex; justify-content: center; }
.gptc-load-more { min-width: 220px; }
.inline-filter-group { margin-bottom: 18px; }
.inline-filter-group__title { font-size: .92rem; font-weight: 700; color: var(--gptc-text); margin-bottom: 10px; }
.gptc-empty {
    grid-column: 1 / -1;
    background: var(--gptc-surface);
    border: 1px dashed var(--gptc-border-strong);
    border-radius: var(--gptc-radius-md);
    padding: 32px;
    text-align: center;
}
.gptc-empty h3 { margin: 0 0 8px; font-size: 1.3rem; }
.gptc-empty p { margin: 0; color: var(--gptc-text-soft); }
.site-footer { margin-top: 36px; border-top: 1px solid var(--gptc-border); background: rgba(255,255,255,0.72); }
.site-footer__inner { display: flex; justify-content: space-between; gap: 24px; padding: 24px 0 34px; }
.site-footer__about p { max-width: 520px; margin: 8px 0 0; color: var(--gptc-text-soft); }
.footer-menu { gap: 10px; }
.footer-menu a { min-height: 38px; }
@media (max-width: 1280px) {
    .cards-grid--tools { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .term-chip-grid,
    .term-chip-grid--compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
    .gptc-shell { width: min(100vw - 24px, 100%); }
    .cards-grid--tools,
    .term-chip-grid,
    .term-chip-grid--compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .catalog-toolbar { grid-template-columns: 1fr 1fr; }
    .catalog-toolbar__search { grid-column: 1 / -1; }
    .site-footer__inner { flex-direction: column; }
}
@media (max-width: 640px) {
    .gptc-section { padding: 22px 0; }
    .cards-grid--tools,
    .term-chip-grid,
    .term-chip-grid--compact { grid-template-columns: 1fr; }
    .catalog-toolbar { grid-template-columns: 1fr; }
    .gptc-card__footer { flex-direction: column; }
    .gptc-card__footer .gptc-button { width: 100%; }
}

.cards-grid--posts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.gptc-card--post .gptc-card__body h3 {
    font-size: 1.22rem;
}
.gptc-card--post .gptc-card__body p {
    min-height: 4.8em;
}
.gptc-empty {
    padding: 28px;
    border: 1px dashed var(--gptc-border-strong);
    border-radius: var(--gptc-radius);
    background: rgba(255,255,255,0.8);
}
.pagination-wrap {
    margin-top: 24px;
}
.pagination-wrap .nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}
.pagination-wrap .page-numbers {
    display: inline-flex;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid var(--gptc-border);
    background: #fff;
    padding: 0 14px;
}
.pagination-wrap .current {
    background: var(--gptc-primary);
    color: #fff;
    border-color: var(--gptc-primary);
}
.add-tool-cta {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) auto;
    gap: 20px;
    align-items: center;
    padding: 28px;
    background: linear-gradient(135deg, #ffffff 0%, #eef5ff 100%);
    border: 1px solid var(--gptc-border);
    border-radius: var(--gptc-radius);
    box-shadow: var(--gptc-shadow);
}
.add-tool-cta__content h2 {
    margin: 8px 0 10px;
    font-size: clamp(1.7rem, 2.2vw, 2.4rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
}
.add-tool-cta__content p {
    margin: 0;
    max-width: 68ch;
    color: var(--gptc-text-soft);
}
.add-tool-cta__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.article-page {
    display: grid;
    gap: 22px;
}
.article-single .gptc-card__body {
    padding: 34px;
}
.article-single .content-cover {
    margin: 0 0 24px;
    overflow: hidden;
    border-radius: 22px;
    border: 1px solid var(--gptc-border);
}
.launch-page {
    display: grid;
    gap: 18px;
}
.launch-card__lead {
    margin: 10px 0 0;
    color: var(--gptc-text-soft);
    max-width: 70ch;
}
.launch-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}
.launch-frame-wrap {
    background: #ffffff;
    border: 1px solid var(--gptc-border);
    border-radius: var(--gptc-radius);
    box-shadow: var(--gptc-shadow);
    overflow: hidden;
}
.launch-frame-wrap__top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gptc-border);
    background: #f8fbff;
}
.launch-frame-wrap__top span {
    color: var(--gptc-text-soft);
    font-size: 0.92rem;
}
.launch-frame-wrap__body {
    min-height: 80vh;
    background: #fff;
}
.launch-frame-wrap__body iframe {
    width: 100%;
    min-height: 80vh;
    border: 0;
    background: #fff;
}
@media (max-width: 1080px) {
    .cards-grid--tools,
    .cards-grid--posts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .add-tool-cta {
        grid-template-columns: 1fr;
    }
    .add-tool-cta__actions {
        justify-content: flex-start;
    }
}
@media (max-width: 700px) {
    .cards-grid--tools,
    .cards-grid--posts {
        grid-template-columns: 1fr;
    }
    .article-single .gptc-card__body {
        padding: 24px;
    }
    .launch-frame-wrap__top,
    .launch-card__actions {
        flex-direction: column;
        align-items: flex-start;
    }
    .launch-card__actions .gptc-button {
        width: 100%;
    }
}

.launch-frame-wrap__note {
    padding: 14px 18px 18px;
    color: var(--gptc-text-soft);
    font-size: 0.92rem;
}

.term-chip__meta{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.term-chip.is-featured,.tag-pill.is-featured{border-color:#cfe0ff;background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);}
.term-chip__badge,.tag-pill__badge{display:inline-flex;align-items:center;min-height:22px;padding:0 8px;border-radius:999px;background:#edf4ff;color:var(--gptc-primary-dark);font-size:.7rem;font-weight:800;letter-spacing:.02em;}
.tag-pill{display:inline-flex;align-items:center;gap:8px;}
.tag-pill__count{display:inline-flex;align-items:center;justify-content:center;min-width:24px;height:24px;padding:0 8px;border-radius:999px;background:#f8fafc;border:1px solid var(--gptc-border);font-size:.78rem;color:var(--gptc-text-soft);}
.tag-cloud-row--dense{gap:8px;}
.filter-chip-group{display:grid;gap:10px;}
.filter-chip-group__title{font-size:.92rem;font-weight:800;color:var(--gptc-text);}
.tag-cloud-row--sidebar .tag-pill{justify-content:flex-start;}
.launch-frame-wrap__actions{display:flex;justify-content:flex-end;padding:16px 0 0;}
.launch-card__lead{margin:10px 0 0;color:var(--gptc-text-soft);}
@media (max-width:960px){.launch-frame-wrap__actions{justify-content:stretch;}.launch-frame-wrap__actions .gptc-button{width:100%;}}