/* Tổng quan AI (/ai) — landing giới thiệu cả 5 phần. Mỗi phần 1 cặp màu qua data-part. */

.aio-hero {
    position: relative;
    overflow: hidden;
    border-radius: var(--cm-radius-xl);
    background:
        radial-gradient(circle at 18% 18%, rgba(124,58,237,.26) 0%, transparent 52%),
        radial-gradient(circle at 82% 78%, rgba(6,182,212,.20) 0%, transparent 52%),
        var(--cm-gradient-card);
    border: 1px solid var(--cm-border);
    padding: 56px 44px;
    margin-bottom: 30px;
    text-align: center;
}
.aio-eyebrow {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--cm-radius-full);
    background: rgba(124,58,237,.15);
    color: #a78bfa;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.aio-title {
    font-size: 40px;
    line-height: 1.18;
    font-weight: 800;
    margin: 0 0 16px;
    color: var(--cm-text-primary);
}
.aio-title .g {
    background: linear-gradient(135deg, #a78bfa 0%, #22d3ee 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.aio-sub { max-width: 760px; margin: 0 auto 26px; color: var(--cm-text-secondary); font-size: 16px; line-height: 1.65; }
.aio-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.aio-btn-grad {
    background: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
    border: none;
    color: #fff;
}
.aio-btn-grad:hover { filter: brightness(1.1); color: #fff; }

.aio-stats { display: flex; gap: 30px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.aio-stat-v { display: block; font-size: 26px; font-weight: 800; color: var(--cm-text-primary); }
.aio-stat-l { display: block; font-size: 12px; color: var(--cm-text-muted); margin-top: 2px; }

.aio-h2 { font-size: 26px; font-weight: 700; text-align: center; margin: 0 0 8px; color: var(--cm-text-primary); }
.aio-h2-sub { text-align: center; color: var(--cm-text-secondary); margin: 0 0 26px; font-size: 15px; }

.aio-parts { display: grid; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); gap: 20px; margin-bottom: 48px; }
.aio-part {
    --aio-a: #7c3aed;
    --aio-b: #06b6d4;
    position: relative;
    background: var(--cm-gradient-card);
    border: 1px solid var(--cm-border);
    border-radius: var(--cm-radius-lg);
    padding: 22px 22px 20px;
    overflow: hidden;
    transition: var(--cm-transition-fast, .15s);
}
.aio-part::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--aio-a), var(--aio-b));
}
.aio-part:hover { border-color: var(--aio-a); transform: translateY(-3px); box-shadow: var(--cm-shadow-hover); }
.aio-part[data-part="hub"]    { --aio-a: #7c3aed; --aio-b: #06b6d4; }
.aio-part[data-part="agent"]  { --aio-a: #10b981; --aio-b: #06b6d4; }
.aio-part[data-part="studio"] { --aio-a: #6366f1; --aio-b: #a855f7; }
.aio-part[data-part="learn"]  { --aio-a: #f59e0b; --aio-b: #f43f5e; }
.aio-part[data-part="api"]    { --aio-a: #06b6d4; --aio-b: #6366f1; }

.aio-part-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.aio-part-ic {
    width: 42px;
    height: 42px;
    flex: 0 0 auto;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    color: #fff;
    background: linear-gradient(135deg, var(--aio-a), var(--aio-b));
}
.aio-part-name { font-size: 18px; font-weight: 700; margin: 0; color: var(--cm-text-primary); }
.aio-part-n { font-size: 11.5px; color: var(--cm-text-muted); }
.aio-part-desc { color: var(--cm-text-secondary); font-size: 14px; line-height: 1.6; margin: 0 0 14px; }

.aio-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 16px; }
.aio-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 11px;
    border-radius: var(--cm-radius-full);
    border: 1px solid var(--cm-border);
    background: rgba(255,255,255,.04);
    color: var(--cm-text-secondary);
    font-size: 12.5px;
    text-decoration: none;
    transition: var(--cm-transition-fast, .15s);
}
a.aio-chip:hover { border-color: var(--aio-a); color: var(--cm-text-primary); background: rgba(255,255,255,.08); }
.aio-chip i { font-size: 11px; color: var(--aio-b); }
.aio-chip.soon { opacity: .48; }
.aio-chip.soon i { color: var(--cm-text-muted); }

.aio-part-go {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    color: transparent;
    background: linear-gradient(135deg, var(--aio-a), var(--aio-b));
    -webkit-background-clip: text;
    background-clip: text;
}
.aio-part-go i { color: var(--aio-b); }
.aio-part-go.off { background: none; -webkit-text-fill-color: initial; color: var(--cm-text-muted); font-weight: 500; }

.aio-why { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; margin-bottom: 48px; }
.aio-why-item { background: var(--cm-gradient-card); border: 1px solid var(--cm-border); border-radius: var(--cm-radius-lg); padding: 20px; }
.aio-why-item i { font-size: 26px; margin-bottom: 10px; display: block; }
.aio-why-item h3 { font-size: 15.5px; font-weight: 700; margin: 0 0 6px; color: var(--cm-text-primary); }
.aio-why-item p { font-size: 13.5px; color: var(--cm-text-secondary); line-height: 1.6; margin: 0; }

.aio-faq { margin: 0 0 44px; }
.aio-faq-item { background: var(--cm-gradient-card); border: 1px solid var(--cm-border); border-radius: var(--cm-radius-md); margin-bottom: 10px; overflow: hidden; }
.aio-faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 15px 20px;
    cursor: pointer;
    font-weight: 600;
    color: var(--cm-text-primary);
    font-size: 14.5px;
}
.aio-faq-q:hover { background: rgba(124,58,237,.05); }
.aio-faq-q > span > i { color: #a78bfa; margin-right: 8px; }
.aio-faq-q > i { transition: var(--cm-transition, .2s); color: var(--cm-text-muted); font-size: 12px; }
.aio-faq-item.open .aio-faq-q > i { transform: rotate(180deg); }
.aio-faq-a { display: none; padding: 0 20px 16px; color: var(--cm-text-secondary); font-size: 14px; line-height: 1.7; }
.aio-faq-item.open .aio-faq-a { display: block; }

.aio-final {
    text-align: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(124,58,237,.20) 0%, transparent 60%),
        var(--cm-gradient-card);
    border: 1px solid var(--cm-border);
    border-radius: var(--cm-radius-xl);
    padding: 42px 32px;
    margin-bottom: 8px;
}
.aio-final h2 { font-size: 26px; font-weight: 700; margin: 0 0 10px; color: var(--cm-text-primary); }
.aio-final p { color: var(--cm-text-secondary); margin: 0 0 22px; font-size: 15px; }

@media (max-width: 768px) {
    .aio-hero { padding: 38px 20px; }
    .aio-title { font-size: 29px; }
    .aio-parts { grid-template-columns: 1fr; }
    .aio-final { padding: 30px 20px; }
}