/* 小组定制按钮组件库 */
.btn {
  --btn-bg: transparent;
  --btn-color: var(--xz-ink);
  --btn-border: var(--xz-line);
  --btn-shadow: none;
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .72rem 1.15rem;
  border: 1px solid var(--btn-border);
  border-radius: 14px;
  color: var(--btn-color);
  background: var(--btn-bg);
  box-shadow: var(--btn-shadow);
  font-weight: 760;
  line-height: 1;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, filter .2s ease;
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); filter: saturate(1.08); }
.btn:active { transform: translateY(0); }
.btn--primary { --btn-bg: linear-gradient(110deg, var(--xz-blue), #486ff4 48%, var(--xz-green)); --btn-color: white; --btn-border: transparent; --btn-shadow: 0 12px 28px rgba(60, 91, 232, .26); }
.btn--secondary { --btn-bg: white; --btn-color: var(--xz-ink); --btn-border: #cfd8f1; --btn-shadow: 0 8px 20px rgba(32, 51, 130, .08); }
.btn--ghost { --btn-bg: rgba(255,255,255,.06); --btn-color: currentColor; --btn-border: rgba(128,145,201,.28); }
.btn--light { --btn-bg: white; --btn-color: var(--xz-ink); --btn-border: white; --btn-shadow: 0 10px 28px rgba(0,0,0,.12); }
.btn--text { min-height: auto; padding: .25rem 0; border: 0; border-radius: 0; color: var(--xz-blue); }
.btn--text::after { content: "→"; transition: transform .2s ease; }
.btn--text:hover { transform: none; }
.btn--text:hover::after { transform: translateX(4px); }
.btn--sm { min-height: 38px; padding: .55rem .85rem; border-radius: 11px; font-size: .86rem; }
.btn--lg { min-height: 54px; padding: .92rem 1.45rem; border-radius: 16px; }
.btn--icon { width: 46px; padding: 0; }
.btn[disabled], .btn.is-disabled { opacity: .48; pointer-events: none; }
.btn.is-loading { color: transparent; pointer-events: none; }
.btn.is-loading::after { content: ""; position: absolute; width: 18px; height: 18px; border: 2px solid rgba(255,255,255,.5); border-top-color: white; border-radius: 50%; animation: spin .75s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.card { background: white; border: 1px solid var(--xz-line); border-radius: var(--xz-radius); padding: 1.6rem; box-shadow: var(--xz-shadow-sm); }
.section--dark .card { color: var(--xz-ink); }
.section--dark .card p { color: var(--xz-muted); }
.card--feature { position: relative; overflow: hidden; }
.card--feature::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: linear-gradient(90deg, var(--xz-blue), var(--xz-cyan), var(--xz-green)); }
.card--feature p:last-child { margin-bottom: 0; }
.card-icon { width: 54px; height: 54px; display: grid; place-items: center; border-radius: 16px; color: white; background: linear-gradient(135deg, var(--xz-blue), var(--xz-cyan), var(--xz-green)); margin-bottom: 1.2rem; font-weight: 900; box-shadow: 0 12px 24px rgba(53, 98, 230, .2); }
.card-icon svg { width: 26px; height: 26px; }
.link-card { display: block; transition: transform .2s ease, box-shadow .2s ease; }
.link-card:hover { transform: translateY(-5px); box-shadow: var(--xz-shadow); }
.link-card .arrow { color: var(--xz-blue); font-weight: 900; }

.industry-card { overflow: hidden; padding: 0; }
.industry-card img { width: 100%; aspect-ratio: 3/2; object-fit: cover; border-bottom: 1px solid var(--xz-line); }
.industry-card-body { padding: 1.35rem; }
.industry-card .fit { display: inline-flex; color: var(--xz-blue); background: var(--xz-soft); border-radius: 999px; padding: .3rem .65rem; font-size: .76rem; font-weight: 800; margin-bottom: .8rem; }

.stat { padding: 1.4rem; border-left: 3px solid transparent; border-image: linear-gradient(var(--xz-blue), var(--xz-green)) 1; }
.stat strong { display: block; color: var(--xz-ink); font-size: 2rem; line-height: 1.1; }
.stat small { color: var(--xz-muted); }
.demo-badge { display: inline-flex; padding: .32rem .66rem; background: #fff5cf; color: #765900; border-radius: 999px; font-size: .75rem; font-weight: 800; }

.steps { counter-reset: step; display: grid; gap: 1rem; }
.step { counter-increment: step; display: grid; grid-template-columns: 54px 1fr; gap: 1rem; padding: 1.35rem; border: 1px solid var(--xz-line); border-radius: 18px; background: white; }
.step::before { content: counter(step, decimal-leading-zero); width: 48px; height: 48px; display: grid; place-items: center; border-radius: 15px; background: linear-gradient(135deg, var(--xz-blue), var(--xz-green)); color: white; font-weight: 900; }
.step p { margin-bottom: 0; }

.quote { padding: clamp(2rem, 5vw, 4rem); border-radius: var(--xz-radius-lg); color: white; background: linear-gradient(125deg, var(--xz-dark), #1d2b83); position: relative; overflow: hidden; }
.quote::after { content: ""; position: absolute; width: 260px; height: 260px; border: 34px solid rgba(16,205,160,.3); border-bottom-color: rgba(76,93,242,.45); border-radius: 50%; right: -80px; top: -90px; }
.quote > * { position: relative; z-index: 1; }
.quote p { color: #c7d1f3; }

.video-placeholder { aspect-ratio: 16/9; display: grid; place-items: center; text-align: center; padding: 2rem; border-radius: var(--xz-radius-lg); border: 1px solid rgba(116,135,200,.28); background: radial-gradient(circle at 70% 15%, rgba(16,205,160,.24), transparent 30%), linear-gradient(140deg, #0a154e, #24348f); color: white; box-shadow: var(--xz-shadow); position: relative; overflow: hidden; }
.video-placeholder::before { content: "▶"; width: 72px; height: 72px; display: grid; place-items: center; padding-left: 5px; border-radius: 50%; background: linear-gradient(135deg, var(--xz-blue), var(--xz-green)); box-shadow: 0 16px 40px rgba(0,0,0,.25); font-size: 1.35rem; margin: 0 auto 1.2rem; }
.video-placeholder strong { display: block; font-size: 1.25rem; margin-bottom: .45rem; }
.video-placeholder span { display: block; max-width: 650px; color: #bdc9ef; font-size: .92rem; }
.video-meta { display: flex; justify-content: space-between; gap: 1rem; margin-top: .75rem; color: var(--xz-muted); font-size: .82rem; }

.faq-list { display: grid; gap: .8rem; }
.faq-item { border: 1px solid var(--xz-line); border-radius: 16px; background: white; overflow: hidden; }
.faq-item summary { cursor: pointer; list-style: none; padding: 1.25rem 3rem 1.25rem 1.3rem; font-weight: 800; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 1.25rem; top: 50%; transform: translateY(-50%); color: var(--xz-blue); font-size: 1.4rem; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 1.3rem 1.25rem; color: var(--xz-muted); }

.cta-band { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; border-radius: var(--xz-radius-lg); padding: clamp(2rem, 5vw, 4rem); background: linear-gradient(115deg, var(--xz-dark), #20308b 62%, #176d8d); color: white; box-shadow: var(--xz-shadow); position: relative; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; width: 240px; height: 240px; right: -120px; border: 34px solid rgba(16,205,160,.45); border-radius: 50%; }
.cta-band > * { position: relative; z-index: 1; }
.cta-band p { color: #bfcaef; margin-bottom: 0; }

.form { display: grid; gap: 1rem; }
.field { display: grid; gap: .45rem; }
.field label { font-weight: 760; font-size: .9rem; }
.field input, .field textarea, .field select { width: 100%; border: 1px solid var(--xz-line); background: white; border-radius: 13px; padding: .82rem 1rem; color: var(--xz-ink); }
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--xz-cyan); outline: 3px solid rgba(27,191,234,.13); }
.field-error { color: #b42318; font-size: .78rem; min-height: 1.1rem; }
.form-note { padding: 1rem; border-radius: 12px; background: #fff7d8; color: #765900; font-size: .86rem; }
.toast { position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 150; max-width: 360px; padding: 1rem 1.2rem; background: var(--xz-dark); color: white; border-radius: 14px; box-shadow: var(--xz-shadow); transform: translateY(140%); opacity: 0; transition: .25s ease; }
.toast.is-visible { transform: translateY(0); opacity: 1; }

.contact-list { display: grid; gap: .8rem; }
.contact-row { display: grid; grid-template-columns: 100px 1fr auto; gap: 1rem; align-items: center; padding: 1rem 0; border-bottom: 1px solid var(--xz-line); }
.contact-row strong { font-size: .88rem; }
.contact-row span, .contact-row a { color: var(--xz-muted); word-break: break-word; }

.prose { max-width: 790px; }
.prose h2 { margin-top: 3rem; }
.prose h3 { margin-top: 2rem; }
.prose p, .prose li { color: var(--xz-muted); }
.tag-list { display: flex; flex-wrap: wrap; gap: .6rem; padding: 0; list-style: none; }
.tag-list li { padding: .5rem .8rem; border-radius: 999px; background: var(--xz-soft); color: var(--xz-ink-2); font-size: .86rem; font-weight: 700; }

@media (max-width: 760px) {
  .cta-band { grid-template-columns: 1fr; }
  .contact-row { grid-template-columns: 80px 1fr; }
  .contact-row .btn { grid-column: 1 / -1; justify-self: start; }
  .video-meta { flex-direction: column; }
}