/* ── Hero ──────────────────────────────────────────────────── */
.ai-hero {
  position: relative;
  background: linear-gradient(135deg, #001428 0%, #002952 25%, #003d7a 50%, #0055a8 75%, #003d7a 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--neutral-white);
  padding: clamp(140px, 13vw, 180px) 0 clamp(64px, 8vw, 100px);
}
.ai-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(0, 212, 255, .15) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(0, 149, 255, .12) 0%, transparent 40%),
    radial-gradient(circle at 40% 40%, rgba(0, 180, 255, .08) 0%, transparent 50%);
  z-index: 1;
}
.ai-hero::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 120%, rgba(0, 149, 255, .4) 0%, transparent 60%),
    radial-gradient(circle at 70% 80%, rgba(0, 149, 255, .1) 0%, transparent 40%);
  z-index: 1;
}
.ai-hero .container { position: relative; z-index: 10; }

/* Hero inner: text top, stats row bottom-right */
.ai-hero-inner {
  display: flex;
  flex-direction: column;
  gap: clamp(2.25rem, 4vw, 3.5rem);
}
.ai-hero-text { }

.ai-hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(0, 149, 255, .15);
  border: 1px solid rgba(0, 212, 255, .35);
  border-radius: 9999px; padding: .375rem 1rem;
  font-size: .875rem; color: #7dd3fc;
  margin-bottom: 1.5rem; letter-spacing: .5px;
}

.ai-hero-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800; line-height: 1.2; margin-bottom: 1.125rem;
  background: linear-gradient(135deg, #ffffff 0%, #b3ecff 30%, #00D4FF 60%, #ffffff 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  filter: drop-shadow(0 0 24px rgba(0, 212, 255, .3));
}
.ai-hero-title-tail {
  display: block;
  margin-top: clamp(.5rem, 1vw, .875rem);
  font-size: clamp(1.375rem, 2.6vw, 2.125rem);
  font-weight: 700;
  letter-spacing: .3px;
}
@media (min-width: 768px) {
  .ai-hero-title-tail { text-align: right; }
}

.ai-hero-subtitle {
  font-size: 1.0625rem; color: rgba(255,255,255,.82);
  line-height: 1.75; font-weight: 300;
}

/* Stats: single row at bottom, right-aligned */
.ai-hero-stats {
  display: flex; flex-direction: row; flex-wrap: wrap;
  gap: .625rem; justify-content: flex-end;
}
.ai-hero-stat {
  position: relative;
  display: inline-flex; align-items: center; gap: .625rem;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12);
  border-radius: 14px; padding: .6rem 1.125rem;
  font-size: .875rem; color: rgba(255,255,255,.82);
  backdrop-filter: blur(8px); white-space: nowrap;
  overflow: hidden;
  cursor: default;
  transition:
    background .3s ease,
    border-color .3s ease,
    color .3s ease,
    box-shadow .3s ease;
}
.ai-hero-stat::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(115deg,
    transparent 30%,
    rgba(0, 212, 255, .42) 50%,
    transparent 70%);
  transform: translateX(-120%);
  transition: transform .7s cubic-bezier(.4, 0, .2, 1);
  pointer-events: none;
}
.ai-hero-stat:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(0, 212, 255, .45);
  color: rgba(255,255,255,.96);
  /* depth via shadow + cyan glow ring — no position change → no hover flicker */
  box-shadow:
    0 10px 26px rgba(0, 149, 255, .28),
    0 0 0 4px rgba(0, 212, 255, .14);
}
.ai-hero-stat:hover::before {
  transform: translateX(120%);
}
.ai-hero-stat strong {
  color: #00D4FF; font-size: 1.0625rem; font-weight: 800;
  transition: filter .3s ease, text-shadow .3s ease;
}
.ai-hero-stat:hover strong {
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, .7));
}

/* ── Configurator Section ──────────────────────────────────── */
.configurator-section {
  padding: 96px 0 80px;
  background: #f8faff;
  position: relative; overflow: hidden;
}
.configurator-section::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 10%, rgba(0,149,255,.35) 50%, transparent 90%);
}

/* ── Selector Cards ────────────────────────────────────────── */
.selector-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 52px;
}

/* Auto-select hint (shown when 企微机器人 is auto-added) */
.auto-select-hint {
  display: flex;
  align-items: center;
  gap: .55rem;
  width: fit-content;
  max-width: 100%;
  margin: 1.5rem auto 0;
  padding: .65rem 1.15rem;
  background: linear-gradient(135deg, rgba(0, 149, 255, .08), rgba(0, 212, 255, .14));
  border: 1px solid rgba(0, 149, 255, .35);
  border-radius: 999px;
  color: #0066cc;
  font-size: .875rem;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .35s ease, transform .35s cubic-bezier(.16, 1, .3, 1);
}
.auto-select-hint[hidden] { display: none; }
.auto-select-hint.show {
  opacity: 1;
  transform: translateY(0);
}

/* Card pulse animation when auto-selected */
@keyframes auto-select-glow {
  0% {
    box-shadow: 0 8px 28px rgba(0, 149, 255, .18), 0 0 0 0 rgba(0, 212, 255, .55);
  }
  60% {
    box-shadow: 0 8px 28px rgba(0, 149, 255, .25), 0 0 0 14px rgba(0, 212, 255, 0);
  }
  100% {
    box-shadow: 0 8px 28px rgba(0, 149, 255, .18), 0 0 0 0 rgba(0, 212, 255, 0);
  }
}
.selector-card.auto-selected {
  animation: auto-select-glow 1.2s cubic-bezier(.16, 1, .3, 1);
}

.selector-card {
  position: relative; cursor: pointer; user-select: none;
  text-align: center;
  padding: 32px 20px 24px;
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .06);
  border: 2px solid rgba(0, 149, 255, .1);
  transition: all .25s ease;
  display: flex; flex-direction: column; align-items: center;
  overflow: hidden;
}
.selector-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-primary); opacity: 0;
  transition: opacity .2s ease;
}
.selector-card:hover {
  /* depth via shadow + glow ring — no position change → no hover flicker */
  box-shadow:
    0 10px 32px rgba(0,149,255,.18),
    0 0 0 4px rgba(0, 149, 255, .08);
  border-color: rgba(0,149,255,.4);
}
.selector-card:hover::before { opacity: 1; }
.selector-card.active {
  background: #edf5ff;
  border-color: #0095FF;
  box-shadow: 0 8px 28px rgba(0,149,255,.18);
}
.selector-card.active::before { opacity: 1; }

/* Check badge */
.card-check {
  position: absolute; top: .75rem; right: .75rem;
  width: 1.25rem; height: 1.25rem; border-radius: 50%;
  border: 2px solid var(--neutral-gray-300);
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.selector-card.active .card-check {
  background: var(--primary-blue); border-color: var(--primary-blue);
}
.card-check svg { display: none; }
.selector-card.active .card-check svg { display: block; }

/* Icon */
.s-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, #0095FF 0%, #00B4FF 50%, #00D4FF 100%);
  border-radius: 16px; margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  color: white; box-shadow: 0 8px 20px rgba(0,149,255,.25);
  transition: transform .25s ease;
}
.selector-card:hover .s-icon { transform: scale(1.06); }
.selector-card.active .s-icon {
  background: linear-gradient(135deg, #0066cc 0%, #0095FF 50%, #00D4FF 100%);
}

.card-name { font-size: 1.0625rem; font-weight: 700; color: var(--neutral-gray-800); margin-bottom: .3rem; }
.selector-card.active .card-name { color: #0066cc; }
.card-subtitle { font-size: .8125rem; color: var(--neutral-gray-500); line-height: 1.5; margin-bottom: 1rem; }

.card-price { text-align: center; margin-top: auto; }
.card-price-orig { font-size: .75rem; color: var(--neutral-gray-400); text-decoration: line-through; min-height: 1.1rem; }
.card-price-main { font-size: 1.1875rem; font-weight: 800; color: #0066cc; }
.card-price-unit { font-size: .8125rem; font-weight: 400; color: var(--neutral-gray-500); }

/* Agent version pills */
.agent-version-tabs {
  display: none; gap: .3rem; margin-top: .75rem; justify-content: center;
}
.selector-card.active .agent-version-tabs { display: flex; }
.version-pill {
  font-size: .75rem; padding: .275rem .65rem; border-radius: 9999px;
  border: 1.5px solid var(--neutral-gray-300); cursor: pointer;
  transition: all .15s; color: var(--neutral-gray-600); white-space: nowrap;
}
.version-pill.active {
  background: #0095FF; border-color: #0095FF; color: white;
  box-shadow: 0 3px 10px rgba(0,149,255,.3);
}
.version-pill:hover:not(.active) { border-color: var(--primary-blue); color: var(--primary-blue); }

/* ── Combo Panel ────────────────────────────────────────────── */
.combo-panel {
  margin-top: 36px;
  background: #ffffff;
  border-radius: 24px; padding: 40px 44px;
  box-shadow: 0 8px 32px rgba(0,102,204,.08), 0 2px 8px rgba(0,0,0,.04);
  border: 1px solid rgba(0,149,255,.1);
  position: relative; overflow: hidden;
}
.combo-panel::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, #0095FF, #00D4FF);
}
.combo-header {
  display: flex; align-items: center; gap: 1rem; margin-bottom: .875rem;
}
.combo-icon-wrap {
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,149,255,.1) 0%, rgba(0,212,255,.07) 100%);
  border: 1px solid rgba(0,149,255,.15);
  display: flex; align-items: center; justify-content: center;
  color: #0095FF; flex-shrink: 0;
}
.combo-title-text {
  font-size: 1.25rem; font-weight: 700; color: var(--neutral-gray-800);
}
.combo-desc {
  list-style: none; padding: 0;
  padding-left: 18px;
  border-left: 3px solid #0095FF;
  margin-bottom: 1rem;
  position: relative; z-index: 1;
}
.combo-desc li {
  color: var(--neutral-gray-600); line-height: 1.75; font-size: .9375rem;
  padding: .3rem 0;
}
.combo-desc li + li { border-top: 1px dashed rgba(0,149,255,.1); }

.combo-tags { display: flex; flex-wrap: wrap; gap: .4rem; position: relative; z-index: 1; }
.combo-tag {
  font-size: .8125rem;
  background: #f0f7ff;
  border: 1px solid rgba(0,149,255,.18);
  color: #0055a8; border-radius: 9999px; padding: .2rem .75rem;
}
.combo-note {
  font-size: .875rem; color: var(--neutral-gray-500); margin-top: 1rem;
  padding-top: 1rem; border-top: 1px solid rgba(0,149,255,.08);
  line-height: 1.6; position: relative; z-index: 1;
}
.combo-note.hidden, .combo-portal-note.hidden { display: none; }
.combo-portal-note {
  font-size: .875rem; color: #0066cc; margin-top: .375rem;
  position: relative; z-index: 1;
}

/* ── Price Bar ──────────────────────────────────────────────── */
.price-bar {
  margin-top: 28px;
  background: #ffffff;
  border: 2px solid rgba(0,149,255,.2);
  border-radius: 20px; padding: 28px 36px;
  display: flex; align-items: center; gap: 2rem; flex-wrap: wrap;
  box-shadow: 0 4px 16px rgba(0,102,204,.06);
}
.price-breakdown {
  display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; flex: 1;
}
.price-item { font-size: .875rem; color: var(--neutral-gray-600); white-space: nowrap; }
.price-empty { font-size: .9rem; color: var(--neutral-gray-400); }
.price-total-block {
  display: flex; flex-direction: column; align-items: flex-end; flex-shrink: 0;
}
.price-total-label { font-size: .8125rem; color: var(--neutral-gray-500); }
.price-total-amount {
  font-size: 2rem; font-weight: 800; line-height: 1.1;
  background: linear-gradient(135deg, #0066cc 0%, #0095FF 50%, #00D4FF 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.price-total-unit { font-size: .875rem; color: var(--neutral-gray-500); }
.price-tagline { font-size: .8125rem; color: #0095FF; margin-top: .2rem; }
.btn-offer {
  display: inline-flex; align-items: center; gap: .5rem;
  background: linear-gradient(135deg, #0095FF 0%, #00D4FF 100%);
  color: white; font-weight: 700; font-size: 1rem;
  padding: .8rem 1.75rem; border-radius: 9999px; border: none;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  box-shadow: 0 6px 20px rgba(0,149,255,.35);
  transition: all .25s ease; flex-shrink: 0;
}
.btn-offer:hover {
  /* depth via shadow + cyan glow ring — no position change → no hover flicker */
  box-shadow:
    0 12px 32px rgba(0,149,255,.55),
    0 0 0 5px rgba(0, 212, 255, .18);
  filter: brightness(1.06);
}

/* ── Product Detail Sections ────────────────────────────────── */
.product-detail { padding: 72px 0; position: relative; overflow: hidden; }
.product-detail.alt-bg {
  background: #f8faff;
}
.product-detail.alt-bg::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,149,255,.25), transparent);
}
.product-detail .container { position: relative; z-index: 1; }

.detail-header {
  display: flex; align-items: flex-start; gap: 1.25rem; margin-bottom: 2rem;
}
.detail-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, #0095FF 0%, #00B4FF 50%, #00D4FF 100%);
  border-radius: 16px; display: flex; align-items: center; justify-content: center;
  color: white; flex-shrink: 0;
  box-shadow: 0 6px 18px rgba(0,149,255,.25);
}
.detail-title { font-size: 1.5rem; font-weight: 800; margin-bottom: .3rem; color: var(--neutral-gray-800); }
.detail-price-row { display: flex; align-items: center; gap: .625rem; flex-wrap: wrap; font-size: .9rem; }
.p-orig { color: var(--neutral-gray-400); text-decoration: line-through; }
.p-disc { color: #0066cc; font-weight: 700; }
.p-note { color: var(--neutral-gray-500); }

/* "更多详情" link inside .detail-header */
.detail-more {
  margin-left: auto;
  align-self: flex-start;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.1rem;
  background: rgba(0, 149, 255, .08);
  color: #0066cc;
  border: 1px solid rgba(0, 149, 255, .25);
  border-radius: 999px;
  font-size: .875rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background .25s ease,
    border-color .25s ease,
    color .25s ease,
    transform .25s ease,
    box-shadow .25s ease;
}
.detail-more:hover {
  background: rgba(0, 149, 255, .14);
  border-color: rgba(0, 149, 255, .55);
  color: #0066cc;
  /* depth via shadow + outer glow ring — no position change → no hover flicker */
  box-shadow:
    0 8px 22px rgba(0, 149, 255, .22),
    0 0 0 4px rgba(0, 149, 255, .08);
}
.detail-more svg { transition: transform .25s ease; }
.detail-more:hover svg { transform: translate(3px, -3px); }

/* Feature list */
.feature-list { list-style: none; padding: 0; }
.feature-list li {
  display: flex; align-items: flex-start; gap: .75rem;
  padding: .625rem 0; border-bottom: 1px solid var(--neutral-gray-100);
  font-size: .9375rem; color: var(--neutral-gray-700); line-height: 1.65;
}
.feature-list li:last-child { border-bottom: none; }
/* Wrapper keeps text + <strong> together as a single flex item,
   preventing Flexbox from blockifying <strong> into its own column. */
.feature-text { flex: 1 1 0%; min-width: 0; }
.feature-dot {
  width: 1.125rem; height: 1.125rem; border-radius: 50%;
  background: linear-gradient(135deg, #0095FF, #00D4FF);
  color: white; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: .25rem;
  box-shadow: 0 3px 8px rgba(0,149,255,.25);
}

/* Push target tags */
.push-targets { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 1.5rem; }
.push-tag {
  background: #f0f7ff;
  border: 1px solid rgba(0,149,255,.2); border-radius: 8px;
  padding: .375rem .875rem; font-size: .875rem; font-weight: 500; color: #0055a8;
}

/* ── Agent Comparison Table (matched to /pricing comparison-table) ─ */
.agent-table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.08);
  margin-top: 1.5rem;
  margin-bottom: 40px;
}
.agent-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  min-width: 560px;
}
.agent-table thead {
  background: linear-gradient(135deg, #4A90E2, #357ABD);
}
.agent-table th {
  padding: 20px;
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  text-align: center;
}
.agent-table th:first-child {
  text-align: left;
  padding-left: 30px;
}
.agent-table th small {
  display: inline-block;
  margin-top: .25rem;
  color: rgba(255,255,255,.85);
  font-weight: 400;
  font-size: 13px;
}
.col-lite,
.col-pro,
.col-ultra {
  background: transparent;
  color: #fff;
}
.rec-badge {
  display: inline-block;
  background: rgba(255,255,255,.22);
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 9999px;
  padding: .15rem .55rem;
  font-size: 12px;
  font-weight: 600;
  margin-left: .35rem;
  vertical-align: middle;
}
.agent-table td {
  padding: 18px 20px;
  border-bottom: 1px solid #E8E8E8;
  text-align: center;
  font-size: 15px;
  color: #2C3E50;
}
.agent-table td:first-child {
  text-align: left;
  padding-left: 30px;
  font-weight: 500;
  color: #2C3E50;
  background: transparent;
}
.agent-table tbody tr:hover {
  background: #F8F9FA;
}
.agent-table tbody tr:last-child td {
  border-bottom: none;
}
/* status marks — matched to /pricing visual */
.check-mark,
.optional-mark,
.cross-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  line-height: 1;
}
.check-mark { background: #2ECC71; }
.optional-mark { background: #F39C12; font-weight: 700; font-style: normal; }
.cross-mark { background: #E74C3C; }

/* ── CTA Section ────────────────────────────────────────────── */
.ai-cta {
  background: linear-gradient(135deg, #001428 0%, #002952 25%, #003d7a 50%, #0055a8 75%, #004080 100%);
  padding: 96px 0; text-align: center; color: white; position: relative; overflow: hidden;
}
.ai-cta::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0,212,255,.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(0,149,255,.1) 0%, transparent 50%);
}
.ai-cta::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,.6), transparent);
}
.ai-cta .container { position: relative; z-index: 1; }
.ai-cta h2 {
  font-size: clamp(1.625rem, 3.5vw, 2.375rem); font-weight: 800; margin-bottom: .875rem;
  background: linear-gradient(135deg, #ffffff 0%, #b3ecff 40%, #00D4FF 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.ai-cta p { color: rgba(255,255,255,.8); margin-bottom: 1.5rem; font-size: 1rem; }
.ai-cta-phone {
  font-size: 1.25rem; font-weight: 700; color: #00D4FF; margin-bottom: 2rem;
  text-shadow: 0 0 16px rgba(0,212,255,.5);
}
.ai-cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── QQ Contact Modal ───────────────────────────────────────── */
.ai-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, .5);
  backdrop-filter: blur(4px);
  z-index: 9000;
  display: none; align-items: center; justify-content: center;
}
.ai-modal-overlay.active { display: flex; }
.ai-modal-content {
  background: #fff; border-radius: 24px;
  padding: 2.25rem 2.5rem;
  width: min(440px, 92vw);
  position: relative;
  box-shadow: 0 32px 80px rgba(0,0,0,.25);
  animation: modalIn .25s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.ai-modal-close {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--neutral-gray-100); border: none; cursor: pointer;
  width: 2rem; height: 2rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--neutral-gray-600); transition: background .15s;
}
.ai-modal-close:hover { background: var(--neutral-gray-200); }
.ai-modal-title {
  font-size: 1.25rem; font-weight: 700; color: var(--neutral-gray-800);
  margin-bottom: .25rem;
}
.ai-modal-subtitle {
  font-size: .875rem; color: var(--neutral-gray-500); margin-bottom: 1.5rem;
}
.ai-modal-phone {
  display: flex; align-items: center; gap: .5rem;
  font-size: 1.0625rem; font-weight: 600; color: #0066cc;
  background: #f0f7ff; border: 1px solid rgba(0,149,255,.2);
  border-radius: 12px; padding: .75rem 1rem; margin-bottom: 1.25rem;
}
/* WeChat QR codes inside modal */
.ai-wechat-section {
  margin: 1rem 0 1.25rem;
  padding: 1rem 0 1.125rem;
  border-top: 1px solid rgba(0, 149, 255, .12);
  border-bottom: 1px solid rgba(0, 149, 255, .12);
}
.ai-wechat-label {
  font-size: .75rem; font-weight: 700;
  color: var(--neutral-gray-500);
  text-align: center;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0 0 .875rem;
}
.ai-wechat-grid {
  display: flex; justify-content: center; gap: 18px;
  flex-wrap: wrap;
}
.ai-wechat-item { text-align: center; flex: 0 0 auto; }
.ai-wechat-item img {
  width: 124px; height: 124px;
  border: 2px solid var(--neutral-gray-200);
  border-radius: 10px;
  object-fit: cover;
  display: block;
  background: #f8faff;
}
.ai-wechat-name {
  font-size: .8125rem; font-weight: 600;
  color: var(--neutral-gray-800);
  margin-top: .5rem;
}
.ai-qq-label {
  font-size: .75rem; font-weight: 700;
  color: var(--neutral-gray-500);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0 0 .625rem;
  text-align: center;
}

.ai-qq-list { display: flex; flex-direction: column; gap: .75rem; }
.ai-qq-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: .875rem 1rem;
  border: 1px solid var(--neutral-gray-200); border-radius: 12px;
  transition: border-color .15s;
}
.ai-qq-item:hover { border-color: rgba(0,149,255,.35); }
.ai-qq-name { font-size: .875rem; font-weight: 600; color: var(--neutral-gray-800); }
.ai-qq-num { font-size: .9375rem; color: var(--neutral-gray-500); margin-top: .1rem; font-family: var(--font-family-mono, monospace); }
.ai-copy-btn {
  font-size: .8125rem; font-weight: 600;
  background: linear-gradient(135deg, #0095FF 0%, #00D4FF 100%);
  color: white; border: none; border-radius: 8px;
  padding: .4rem .875rem; cursor: pointer;
  transition: opacity .15s;
  white-space: nowrap;
}
.ai-copy-btn:hover { opacity: .88; }

/* ── Responsive ─────────────────────────────────────────────── */

/* Wide tablet: stats align left when hero text section is narrower */
@media (max-width: 900px) {
  .ai-hero-stats { justify-content: flex-start; }
}

/* Tablet: 3 selector cards → 2 columns */
@media (max-width: 780px) {
  .selector-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile (≤768px): phones landscape + tablet portrait */
@media (max-width: 768px) {
  /* Hero — preserve navbar offset (~74px) + readable breathing */
  .ai-hero {
    padding: clamp(114px, 24vw, 140px) 0 clamp(48px, 9vw, 72px);
  }
  .ai-hero-inner { gap: clamp(1.5rem, 5vw, 2.25rem); }
  .ai-hero-badge {
    font-size: .75rem;
    padding: .3rem .85rem;
    letter-spacing: .2px;
    margin-bottom: 1.125rem;
  }
  .ai-hero-badge svg { width: 12px; height: 12px; }

  /* Title stays bold/gradient; tail becomes a clear tagline (lighter weight, plain color) */
  .ai-hero-title {
    font-size: clamp(1.75rem, 7.5vw, 2.25rem);
    line-height: 1.22;
    margin-bottom: .875rem;
  }
  .ai-hero-title-tail {
    font-size: clamp(1rem, 4.2vw, 1.25rem);
    font-weight: 500;
    letter-spacing: 0;
    margin-top: .625rem;
    /* override parent gradient + glow — make tail a calm secondary line */
    background: none;
    -webkit-background-clip: initial;
    background-clip: initial;
    -webkit-text-fill-color: rgba(255, 255, 255, .85);
    color: rgba(255, 255, 255, .85);
    filter: none;
  }

  .ai-hero-subtitle {
    font-size: .9375rem;
    line-height: 1.7;
    color: rgba(255,255,255,.72);
  }
  .ai-hero-stats { gap: .5rem; }
  .ai-hero-stat {
    padding: .5rem .875rem;
    font-size: .8125rem;
    gap: .5rem;
    border-radius: 12px;
  }
  .ai-hero-stat strong { font-size: 1rem; }

  /* Configurator section spacing */
  .configurator-section { padding: 60px 0 56px; }
  .selector-grid { margin-top: 36px; gap: 14px; }

  /* Auto-select hint */
  .auto-select-hint {
    border-radius: 16px;
    padding: .6rem .9rem;
    font-size: .8125rem;
    line-height: 1.5;
    text-align: left;
  }

  /* Combo panel */
  .combo-panel { padding: 1.5rem; margin-top: 24px; border-radius: 18px; }
  .combo-icon-wrap { width: 38px; height: 38px; border-radius: 10px; }
  .combo-title-text { font-size: 1.0625rem; line-height: 1.4; }
  .combo-desc { padding-left: 14px; margin-bottom: .75rem; }
  .combo-desc li { font-size: .875rem; line-height: 1.65; padding: .25rem 0; }

  /* Price bar */
  .price-bar { flex-direction: column; align-items: stretch; padding: 1.5rem; }
  .price-total-block { align-items: flex-start; }
  .btn-offer { width: 100%; justify-content: center; }

  /* Modal */
  .ai-modal-content { padding: 1.75rem; }
}

/* Compact mobile (≤640px): cards stack 1-col, product header stacks */
@media (max-width: 640px) {
  /* Cards: 1 column + tighter padding */
  .selector-grid { grid-template-columns: 1fr; gap: 12px; }
  .selector-card { padding: 22px 18px 20px; }
  .s-icon { width: 52px; height: 52px; margin-bottom: 14px; border-radius: 14px; }
  .card-name { font-size: 1rem; }
  .card-subtitle { font-size: .78125rem; margin-bottom: .75rem; }
  .card-price-main { font-size: 1.0625rem; }

  /* Product detail sections */
  .product-detail { padding: 56px 0; }
  .detail-header { align-items: flex-start; gap: .625rem; margin-bottom: 1.5rem; }
  .detail-title-group { flex: 1; min-width: 0; }
  .detail-icon { width: 40px; height: 40px; border-radius: 10px; }
  .detail-icon svg { width: 18px; height: 18px; }
  .detail-title { font-size: 1rem; margin-bottom: .15rem; line-height: 1.4; }
  .detail-price-row { font-size: .75rem; gap: .25rem; }
  .detail-more {
    margin-left: 0;
    align-self: flex-start;
    padding: .375rem .7rem;
    font-size: .75rem;
  }

  /* Feature list — tighter */
  .feature-list li {
    font-size: .875rem;
    padding: .55rem 0;
    line-height: 1.6;
    gap: .625rem;
  }
  .feature-dot { width: 1rem; height: 1rem; margin-top: .2rem; }
  .feature-dot svg { width: 7px; height: 7px; }

  /* Push target tags */
  .push-tag { font-size: .8125rem; padding: .3rem .75rem; }

  /* CTA section */
  .ai-cta { padding: 64px 0; }
  .ai-cta-actions { flex-direction: column; align-items: center; }
}

/* Very small screens (≤380px): extra tightening */
@media (max-width: 380px) {
  .ai-hero-stats { gap: .4rem; }
  .ai-hero-stat { padding: .45rem .75rem; font-size: .75rem; }
  .ai-hero-stat strong { font-size: .9375rem; }
  .ai-hero-badge { font-size: .75rem; padding: .3rem .75rem; }
  .ai-hero-badge svg { width: 12px; height: 12px; }
}

/* ── 员工人设 detail tag ─────────────────────────────────── */
.detail-subtitle-tag {
  display: inline-block;
  font-size: .75rem; font-weight: 500;
  color: var(--neutral-gray-500);
  background: var(--neutral-gray-100);
  border: 1px solid var(--neutral-gray-200);
  border-radius: 6px; padding: .1rem .5rem;
  margin-left: .5rem; vertical-align: middle;
  font-style: normal;
}

/* ── 企微群场景演示 ─────────────────────────────────────────── */
.aie-demo-section {
  padding: 96px 0 80px;
  background: var(--neutral-gray-50);
  border-top: 1px solid var(--neutral-gray-200);
}
.aie-demo-eyebrow {
  font-size: .75rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--primary-blue);
  margin-bottom: .5rem;
}
.aie-demo-subtitle {
  color: var(--neutral-gray-500); font-size: .9375rem; margin-top: .5rem;
}
.aie-demo-layout {
  display: grid;
  grid-template-columns: 260px 400px;
  gap: 3.5rem;
  justify-content: center;
  align-items: start;
  margin-top: 3rem;
}

/* Left: scene tabs */
.aie-demo-tabs { display: flex; flex-direction: column; gap: .5rem; }
.aie-demo-tab {
  display: flex; align-items: flex-start; gap: .875rem;
  background: #fff; border: 1px solid var(--neutral-gray-200);
  border-radius: 12px; padding: 1rem 1.125rem;
  cursor: pointer; text-align: left;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.aie-demo-tab:hover { border-color: rgba(0,149,255,.35); }
.aie-demo-tab.active {
  border-color: var(--primary-blue);
  background: #eff6ff;
  box-shadow: 0 2px 12px rgba(0,149,255,.12);
}
.aie-demo-tab-dot {
  flex-shrink: 0; margin-top: .35rem;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--neutral-gray-300); transition: background .2s;
}
.aie-demo-tab.active .aie-demo-tab-dot { background: var(--primary-blue); }
.aie-demo-tab-role {
  font-size: .9375rem; font-weight: 700; color: var(--neutral-gray-800);
  margin-bottom: .25rem;
}
.aie-demo-tab.active .aie-demo-tab-role { color: var(--primary-blue); }
.aie-demo-tab-desc { font-size: .8125rem; color: var(--neutral-gray-500); line-height: 1.5; }
.aie-demo-cycle-note {
  display: flex; align-items: center; gap: .4rem;
  font-size: .75rem; color: var(--neutral-gray-400);
  padding: .625rem .25rem;
}

/* Phone frame */
.aie-phone-outer {
  display: flex; justify-content: center; align-items: flex-start;
  position: relative; padding: 16px 0 24px;
}
.aie-phone-outer::before {
  content: '';
  position: absolute;
  width: 360px; height: 560px;
  background: radial-gradient(ellipse at 50% 40%, rgba(22,119,255,.12) 0%, transparent 68%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  pointer-events: none;
}
.aie-phone {
  width: 330px; height: 620px;
  border-radius: 46px;
  /* Single-layer clean iPhone frame */
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.12),
    0 0 0 10px #1c1c1e,
    0 0 0 11.5px rgba(255,255,255,.06),
    0 30px 70px rgba(0,0,0,.28),
    0 6px 18px rgba(0,0,0,.14);
  overflow: hidden;
  display: flex; flex-direction: column;
  background: #EDEDE8;
  position: relative;
}

/* Status bar */
.aie-status-bar {
  background: #EDEDE8; flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px 4px;
}
.aie-status-time {
  font-size: .875rem; font-weight: 700; color: #111;
  font-variant-numeric: tabular-nums; letter-spacing: -.02em;
}
.aie-status-right {
  display: flex; align-items: center; gap: 6px; color: #111;
}
.aie-battery-label {
  font-size: .6875rem; font-weight: 600; color: #111;
}

/* Chat header */
.aie-chat-header {
  display: flex; align-items: center; gap: .375rem;
  background: #EDEDE8; flex-shrink: 0;
  padding: .25rem .875rem .625rem;
}
.aie-chat-back {
  color: #576B95; flex-shrink: 0;
  display: flex; align-items: center;
}
.aie-chat-title { flex: 1; min-width: 0; text-align: center; }
.aie-chat-name-row {
  display: flex; align-items: center; justify-content: center; gap: .25rem;
}
.aie-chat-name {
  font-size: .9375rem; font-weight: 600; color: #111;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.aie-chat-mute { color: #aaa; flex-shrink: 0; }
.aie-chat-meta { font-size: .6875rem; color: #888; margin-top: 1px; }
.aie-chat-actions {
  display: flex; align-items: center; gap: .5rem; flex-shrink: 0; color: #444;
}

/* Chat body */
.aie-chat-body {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: .5rem .75rem;
  background: #EDEDE8;
  display: flex; flex-direction: column; gap: .5rem;
  scroll-behavior: smooth;
}
.aie-chat-body::-webkit-scrollbar { display: none; }

/* Quick-action toolbar */
.aie-chat-toolbar {
  display: flex; align-items: flex-start;
  background: #F2F2EC; flex-shrink: 0;
  border-top: .5px solid rgba(0,0,0,.12);
  padding: 5px 6px 4px;
  overflow-x: auto; scrollbar-width: none;
  gap: 2px;
}
.aie-chat-toolbar::-webkit-scrollbar { display: none; }
.aie-tool-item {
  display: flex; flex-direction: column; align-items: center;
  gap: 2px; min-width: 44px; padding: 1px 2px;
}
.aie-tool-icon {
  width: 26px; height: 26px; border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
}
.aie-tool-label { font-size: .45rem; color: #666; white-space: nowrap; }

/* Input row */
.aie-chat-input-row {
  display: flex; align-items: center; gap: .375rem;
  background: #F2F2EC; flex-shrink: 0;
  padding: .375rem .625rem .875rem;
}
.aie-chat-voice {
  color: #555; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
}
.aie-chat-input-bar {
  flex: 1; background: #fff; border-radius: 5px;
  padding: .4rem .75rem; font-size: .8125rem;
  color: #aaa; border: none; line-height: 1.3;
  box-shadow: 0 1px 2px rgba(0,0,0,.08);
}
.aie-chat-emoji, .aie-chat-add {
  width: 28px; height: 28px; color: #555; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}

/* Messages */
.aie-msg-sys {
  font-size: .6875rem; color: #999; text-align: center;
  background: rgba(0,0,0,.07); border-radius: 9999px;
  padding: .2rem .75rem; align-self: center;
  opacity: 0; animation: msg-fade-in .3s forwards;
}
.aie-msg-row {
  display: flex; align-items: flex-start; gap: .5rem;
  opacity: 0; transform: translateY(6px);
  transition: opacity .25s ease, transform .25s ease;
}
.aie-msg-row.msg-in { opacity: 1; transform: translateY(0); }
.aie-msg-row.row-right { flex-direction: row-reverse; }

/* Avatars */
.aie-avatar {
  width: 40px; height: 40px; border-radius: 8px; flex-shrink: 0;
  background: url('https://www.likelic.com/images/logo60.png') center/cover no-repeat;
}
.aie-avatar-circle {
  width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: .875rem; font-weight: 700; color: #fff;
}

/* Message content */
.aie-msg-content {
  display: flex; flex-direction: column; gap: .2rem;
  max-width: 230px;
}
.aie-msg-row.row-right .aie-msg-content { align-items: flex-end; }
.aie-sender-name { font-size: .6875rem; color: #888; padding: 0 .25rem; }

/* Bubbles */
.aie-bubble {
  border-radius: 8px; padding: .625rem .875rem;
  font-size: .8125rem; line-height: 1.6; word-break: break-all;
}
.bubble-user {
  background: #C2E3FF; color: #111;
  border-top-right-radius: 2px;
}
.bubble-bot {
  background: #fff; color: #111;
  border-top-left-radius: 2px;
  box-shadow: 0 1px 2px rgba(0,0,0,.1);
}
.aie-link { color: #1677FF; }

/* Card (two-column layout: text left, icon button right) */
.aie-card {
  display: flex; align-items: center;
  gap: .625rem; min-width: 170px;
}
.aie-card-body { flex: 1; min-width: 0; }
.aie-card-title {
  font-size: .875rem; font-weight: 700; color: #111;
  margin-bottom: .375rem;
}
.aie-card-row { font-size: .75rem; color: #555; line-height: 1.65; }
.aie-card-icon-btn {
  width: 44px; height: 44px; border-radius: 10px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.aie-card-icon-btn.btn-blue { background: #1677FF; }
.aie-card-icon-btn.btn-red  { background: #D93026; }

/* Typing dots */
.aie-typing-dots {
  display: flex; align-items: center; gap: 4px;
  padding: .125rem 0;
}
.aie-typing-dots span {
  width: 6px; height: 6px; border-radius: 50%;
  background: #bbb; animation: typing-bounce .9s ease-in-out infinite;
}
.aie-typing-dots span:nth-child(2) { animation-delay: .15s; }
.aie-typing-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: .5; }
  30% { transform: translateY(-5px); opacity: 1; }
}
@keyframes msg-fade-in { to { opacity: 1; } }

/* Responsive */
@media (max-width: 960px) {
  .aie-demo-layout { grid-template-columns: 1fr; }
  .aie-demo-tabs { flex-direction: row; flex-wrap: wrap; gap: .5rem; }
  .aie-demo-tab { flex: 1; min-width: 140px; }
  .aie-phone-outer { margin-top: 1.5rem; }
}
@media (max-width: 480px) {
  .aie-phone { width: 295px; height: 540px; border-radius: 40px; }
  .aie-demo-tab { min-width: 100%; }
}