/* =========================================================
   AI Boost (AI 智能提效年包) — page styles
   Visual language matched to /ai-employee, layout refined.
   ========================================================= */

/* ── Hero ───────────────────────────────────────────────── */
/* Same color palette as /ai-employee for consistent brand brightness */
.ab-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: #fff;
  padding: clamp(140px, 13vw, 180px) 0 clamp(64px, 8vw, 100px);
}
.ab-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;
}
.ab-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;
}
.ab-hero .container { position: relative; z-index: 10; }

.ab-hero-inner {
  display: flex; flex-direction: column;
  gap: clamp(2.25rem, 4vw, 3.5rem);
}

.ab-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;
  align-self: flex-start;
}

.ab-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));
}
.ab-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) {
  .ab-hero-title-tail { text-align: right; }
}

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

.ab-hero-stats {
  display: flex; flex-wrap: wrap; gap: .625rem;
  justify-content: flex-end;
}
.ab-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;
  transition: background .3s ease, border-color .3s ease, color .3s ease, box-shadow .3s ease;
}
.ab-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;
}
.ab-hero-stat:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(0, 212, 255, .45);
  color: rgba(255,255,255,.96);
  box-shadow: 0 10px 26px rgba(0, 149, 255, .28), 0 0 0 4px rgba(0, 212, 255, .14);
}
.ab-hero-stat:hover::before { transform: translateX(120%); }
.ab-hero-stat strong { color: #00D4FF; font-size: 1.0625rem; font-weight: 800; }

/* Particles (re-used pattern from ai-employee) */
.ab-hero .hero-bg { position: absolute; inset: 0; pointer-events: none; }
.ab-hero .particle {
  position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, .75), transparent);
  animation: ab-float 12s ease-in-out infinite;
}
@keyframes ab-float {
  0%, 100% { transform: translateY(0) scale(1); opacity: .6; }
  50%      { transform: translateY(-30px) scale(1.4); opacity: 1; }
}

/* ── Section base ────────────────────────────────────────── */
.ab-section { padding: 96px 0 80px; position: relative; overflow: hidden; }
.ab-section.alt-bg { background: #f8faff; }
.ab-section.alt-bg::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%);
}
.ab-section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.ab-section-eyebrow {
  font-size: .75rem; font-weight: 700; letter-spacing: 2.5px;
  color: #0095FF; text-transform: uppercase; margin: 0 0 .5rem;
}
.ab-section-title {
  font-size: clamp(1.625rem, 2.6vw, 2.125rem);
  font-weight: 800; color: #1A2332; margin: 0 0 .625rem;
  letter-spacing: -.5px;
}
.ab-section-subtitle {
  color: #5a6578; font-size: .9375rem; line-height: 1.7; margin: 0;
}

/* ── Plans (3 tier cards) ────────────────────────────────── */
.ab-plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.ab-plan {
  position: relative;
  background: #fff;
  border-radius: 24px;
  padding: 36px 28px 32px;
  border: 1.5px solid rgba(0, 149, 255, .12);
  box-shadow: 0 8px 32px rgba(0, 102, 204, .06);
  display: flex; flex-direction: column;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.ab-plan:hover {
  border-color: rgba(0, 149, 255, .3);
  box-shadow: 0 12px 40px rgba(0, 149, 255, .14);
}

/* Featured (Growth tier) — brand-mid blue.
   Same color family as the hero (uses #003d7a / #0055a8 / #0066cc stops)
   so white text reads cleanly while still feeling vibrant. */
.ab-plan.featured {
  background: linear-gradient(155deg, #003d7a 0%, #0055a8 55%, #0066cc 100%);
  border: none;
  color: #fff;
  transform: scale(1.03);
  box-shadow: 0 18px 50px rgba(0, 102, 204, .35);
  z-index: 1;
  position: relative;
  overflow: hidden;
}
.ab-plan.featured::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 85% 5%, rgba(0, 212, 255, .22), transparent 50%),
    radial-gradient(circle at 10% 95%, rgba(0, 149, 255, .18), transparent 55%);
  pointer-events: none;
}
.ab-plan.featured > * { position: relative; z-index: 1; }
.ab-plan.featured:hover {
  box-shadow: 0 22px 56px rgba(0, 102, 204, .5), 0 0 0 4px rgba(0, 212, 255, .12);
}
.ab-plan-name {
  font-size: 1.125rem; font-weight: 700; color: #1A2332;
  margin: 0 0 .25rem; letter-spacing: .3px;
}
.ab-plan.featured .ab-plan-name { color: #fff; }

.ab-plan-scope {
  font-size: .8125rem; color: #5a6578; margin: 0 0 1.75rem;
}
.ab-plan.featured .ab-plan-scope { color: rgba(255,255,255,.82); }

.ab-plan-price-row { display: flex; align-items: baseline; gap: .375rem; flex-wrap: wrap; }
.ab-plan-price-amount {
  font-size: 2.5rem; font-weight: 800; color: #0066cc;
  letter-spacing: -1px; line-height: 1;
}
.ab-plan.featured .ab-plan-price-amount {
  background: linear-gradient(135deg, #fff 0%, #b3ecff 50%, #00D4FF 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.ab-plan-price-unit { font-size: .9375rem; font-weight: 500; color: #5a6578; }
.ab-plan.featured .ab-plan-price-unit { color: rgba(255,255,255,.7); }
.ab-plan-price-orig {
  font-size: .8125rem; color: #9ca5b4;
  text-decoration: line-through;
  margin-top: .375rem;
}
.ab-plan.featured .ab-plan-price-orig { color: rgba(255,255,255,.62); }

/* Points pill — orange accent to highlight the value (额度) */
.ab-plan-points {
  margin: 1.25rem 0; padding: .875rem 1rem;
  background: linear-gradient(135deg, rgba(249, 115, 22, .08), rgba(251, 146, 60, .1));
  border: 1px solid rgba(249, 115, 22, .25);
  border-radius: 12px;
  display: flex; align-items: center; gap: .55rem;
  font-size: .9375rem; color: #c2410c;
}
.ab-plan-points svg { color: #f97316; flex-shrink: 0; }
.ab-plan-points strong {
  font-weight: 800;
  color: #ea580c;
  font-size: 1.0625rem;
  letter-spacing: -.2px;
}
.ab-plan.featured .ab-plan-points {
  background: linear-gradient(135deg, rgba(251, 146, 60, .14), rgba(253, 186, 116, .22));
  border-color: rgba(251, 146, 60, .55);
  color: #fed7aa;
}
.ab-plan.featured .ab-plan-points svg { color: #fdba74; }
.ab-plan.featured .ab-plan-points strong { color: #fdba74; }

.ab-plan-features { list-style: none; padding: 0; margin: 0 0 1.75rem; flex: 1; }
.ab-plan-features li {
  display: flex; align-items: flex-start; gap: .55rem;
  font-size: .875rem; color: #4a5568; line-height: 1.5;
  padding: .35rem 0;
}
.ab-plan.featured .ab-plan-features li { color: rgba(255,255,255,.92); }
.ab-plan-features svg {
  flex-shrink: 0; margin-top: 2px;
  color: #0095FF;
}
.ab-plan.featured .ab-plan-features svg { color: #00D4FF; }

.ab-plan-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  width: 100%;
  padding: .75rem 1.125rem;
  background: rgba(0, 149, 255, .08);
  color: #0066cc;
  border: 1.5px solid rgba(0, 149, 255, .3);
  border-radius: 12px;
  font-size: .9375rem; font-weight: 700;
  text-decoration: none; cursor: pointer;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease, color .25s ease;
}
.ab-plan-cta:hover {
  background: rgba(0, 149, 255, .14);
  border-color: rgba(0, 149, 255, .55);
  color: #0066cc;
  box-shadow: 0 8px 22px rgba(0, 149, 255, .2), 0 0 0 4px rgba(0, 149, 255, .08);
}
.ab-plan.featured .ab-plan-cta {
  background: linear-gradient(135deg, #00D4FF 0%, #0095FF 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 20px rgba(0, 149, 255, .35);
}
.ab-plan.featured .ab-plan-cta:hover {
  box-shadow:
    0 12px 32px rgba(0, 149, 255, .55),
    0 0 0 5px rgba(0, 212, 255, .18);
  filter: brightness(1.06);
}

/* ── Function cards (已上线 4 个) ─────────────────────────── */
.ab-funcs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.ab-func {
  position: relative;
  background: #fff;
  border: 1px solid rgba(0, 149, 255, .12);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 4px 16px rgba(0, 102, 204, .05);
  display: flex; gap: 18px; align-items: flex-start;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.ab-func:hover {
  border-color: rgba(0, 149, 255, .35);
  box-shadow: 0 10px 32px rgba(0, 149, 255, .12);
}
.ab-func-icon {
  width: 52px; height: 52px;
  flex-shrink: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, #0095FF 0%, #00B4FF 50%, #00D4FF 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 6px 16px rgba(0, 149, 255, .25);
}
.ab-func-body { flex: 1; min-width: 0; }
.ab-func-head { display: flex; align-items: center; gap: .625rem; flex-wrap: wrap; margin-bottom: .5rem; }
.ab-func-name { font-size: 1.0625rem; font-weight: 700; color: #1A2332; margin: 0; }
.ab-func-cost {
  font-size: .75rem; font-weight: 600;
  background: rgba(0, 149, 255, .1);
  color: #0066cc;
  border: 1px solid rgba(0, 149, 255, .2);
  border-radius: 9999px;
  padding: 2px 10px;
  white-space: nowrap;
}
.ab-func-desc {
  font-size: .875rem; color: #5a6578; line-height: 1.6; margin: 0;
}

/* "查看详情" link in top-right corner of each function card */
.ab-func-more {
  position: absolute;
  top: 14px; right: 14px;
  width: 30px; height: 30px;
  display: inline-flex;
  align-items: center; justify-content: center;
  background: rgba(0, 149, 255, .07);
  color: #0066cc;
  border: 1px solid rgba(0, 149, 255, .2);
  border-radius: 8px;
  text-decoration: none;
  transition: background .25s ease, border-color .25s ease, color .25s ease, box-shadow .25s ease;
  z-index: 2;
}
.ab-func-more svg { transition: transform .25s ease; }
.ab-func-more:hover {
  background: rgba(0, 149, 255, .14);
  border-color: rgba(0, 149, 255, .55);
  color: #0055a8;
  box-shadow: 0 6px 16px rgba(0, 149, 255, .2), 0 0 0 3px rgba(0, 149, 255, .08);
}
.ab-func-more:hover svg { transform: translate(2px, -2px); }
/* Reserve a bit of right padding so the chip in head row never collides with the icon */
.ab-func:has(.ab-func-more) .ab-func-head { padding-right: 36px; }

/* ── Upcoming features (即将上线) ─────────────────────────── */
/* Orange theme — visually distinct from main brand blue, but warm/inviting */
.ab-soon-banner {
  display: inline-flex; align-items: center; gap: .5rem;
  background: linear-gradient(135deg, rgba(249, 115, 22, .1), rgba(251, 146, 60, .12));
  border: 1px solid rgba(249, 115, 22, .3);
  color: #c2410c; font-size: .8125rem; font-weight: 600;
  padding: .35rem 1rem; border-radius: 9999px;
  margin-bottom: 1rem;
}
.ab-soons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.ab-soon {
  position: relative;
  background: #fff;
  border: 1px dashed rgba(249, 115, 22, .4);
  border-radius: 16px;
  padding: 22px 20px;
  transition: border-color .3s ease, box-shadow .3s ease, background .3s ease;
}
.ab-soon:hover {
  border-color: rgba(249, 115, 22, .65);
  border-style: solid;
  background: rgba(249, 115, 22, .03);
  box-shadow: 0 8px 24px rgba(249, 115, 22, .15);
}
.ab-soon-tag {
  position: absolute; top: 12px; right: 12px;
  font-size: .6875rem; font-weight: 700;
  background: linear-gradient(135deg, #f97316, #fb923c);
  color: #fff;
  padding: 2px 8px; border-radius: 9999px;
  letter-spacing: .3px;
}
.ab-soon-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(249, 115, 22, .12), rgba(251, 146, 60, .16));
  border: 1px solid rgba(249, 115, 22, .25);
  display: flex; align-items: center; justify-content: center;
  color: #f97316;
  margin-bottom: .875rem;
}
.ab-soon-name {
  font-size: .9375rem; font-weight: 700; color: #1A2332;
  margin: 0 0 .35rem;
}
.ab-soon-desc {
  font-size: .8125rem; color: #5a6578; line-height: 1.55; margin: 0;
}

/* ── Value props (为什么选这个年包) ──────────────────────── */
.ab-whys {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.ab-why {
  background: #fff;
  border: 1px solid rgba(0, 149, 255, .12);
  border-radius: 18px;
  padding: 28px 24px;
  text-align: left;
  transition: border-color .3s ease, box-shadow .3s ease;
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-rows: auto auto;
  column-gap: .875rem;
  align-items: center;
}
.ab-why:hover {
  border-color: rgba(0, 149, 255, .3);
  box-shadow: 0 10px 28px rgba(0, 149, 255, .1);
}
.ab-why-icon {
  grid-column: 1; grid-row: 1;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 149, 255, .12), rgba(0, 212, 255, .14));
  border: 1px solid rgba(0, 149, 255, .22);
  display: flex; align-items: center; justify-content: center;
  color: #0095FF;
}
.ab-why-name {
  grid-column: 2; grid-row: 1;
  font-size: 1rem; font-weight: 700; color: #1A2332;
  margin: 0;
}
.ab-why-desc {
  grid-column: 1 / -1; grid-row: 2;
  font-size: .875rem; color: #5a6578; line-height: 1.6; margin: .75rem 0 0;
}

/* ── Limited-time band ───────────────────────────────────── */
.ab-limited {
  display: flex; align-items: center; justify-content: center; gap: .55rem;
  background: linear-gradient(135deg, rgba(245, 158, 11, .12), rgba(251, 191, 36, .15));
  border: 1px solid rgba(245, 158, 11, .35);
  color: #b45309; font-size: .9375rem; font-weight: 600;
  padding: .75rem 1.25rem; border-radius: 14px;
  margin: 28px auto 0; max-width: fit-content;
  line-height: 1.5;
}
.ab-limited svg { color: #d97706; flex-shrink: 0; }
/* Wrap the text in a span to keep <strong> inline,
   otherwise Flexbox blockifies it into its own column. */
.ab-limited > span { min-width: 0; }

/* Plan notes — fine print below limited-time banner */
.ab-plan-notes {
  display: flex;
  align-items: flex-start;            /* icon aligns with the FIRST line, not center of wrap */
  justify-content: center;            /* block as a whole stays centered horizontally */
  gap: .45rem;
  margin: 14px auto 0;
  max-width: 720px;
  padding: 0 1rem;
  font-size: .8125rem;
  color: #6b7383;
  line-height: 1.6;
}
.ab-plan-notes svg {
  flex-shrink: 0;
  color: #94a3b8;
  margin-top: 3px;                    /* optical alignment with first text line */
}
.ab-plan-notes > span {
  min-width: 0;
  text-align: left;                   /* wrapped lines flush-left (NOT center) */
}

/* ── CTA Section ────────────────────────────────────────── */
/* Fully mirrors /ai-employee .ai-cta — same gradient, glows, gradient title */
.ab-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;
}
.ab-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%);
}
.ab-cta::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,.6), transparent);
}
.ab-cta .container { position: relative; z-index: 1; }
.ab-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;
}
.ab-cta p { color: rgba(255,255,255,.8); margin-bottom: 1.5rem; font-size: 1rem; }
.ab-cta-phone {
  font-size: 1.25rem; font-weight: 700; color: #00D4FF; margin-bottom: 2rem;
  text-shadow: 0 0 16px rgba(0,212,255,.5);
}
.ab-cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── QQ Contact Modal (re-used from ai-employee, prefixed) ─ */
.ab-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 20, 40, .68);
  backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center;
  z-index: 10000; padding: 1.5rem;
}
.ab-modal-overlay.active { display: flex; }
.ab-modal-content {
  background: #fff; border-radius: 20px;
  padding: 2rem; max-width: 420px; width: 100%;
  position: relative;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
  animation: ab-modal-in .35s cubic-bezier(.16, 1, .3, 1);
}
@keyframes ab-modal-in {
  from { opacity: 0; transform: translateY(16px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.ab-modal-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 36px; height: 36px; border-radius: 50%;
  background: #f1f5f9; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #475569;
}
.ab-modal-close:hover { background: #e2e8f0; color: #0f172a; }
.ab-modal-title { font-size: 1.25rem; font-weight: 700; margin: 0 0 .35rem; color: #1A2332; }
.ab-modal-subtitle { font-size: .9375rem; color: #5a6578; margin: 0 0 1.25rem; }
.ab-modal-phone {
  display: inline-flex; align-items: center; gap: .5rem;
  background: linear-gradient(135deg, rgba(0,149,255,.08), rgba(0,212,255,.08));
  border: 1px solid rgba(0,149,255,.18);
  color: #0066cc; font-weight: 600;
  padding: .5rem .875rem; border-radius: 10px;
  margin-bottom: 1rem;
}
/* WeChat QR codes inside modal */
.ab-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);
}
.ab-wechat-label {
  font-size: .75rem; font-weight: 700;
  color: #5a6578;
  text-align: center;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0 0 .875rem;
}
.ab-wechat-grid {
  display: flex; justify-content: center; gap: 18px;
  flex-wrap: wrap;
}
.ab-wechat-item { text-align: center; flex: 0 0 auto; }
.ab-wechat-item img {
  width: 124px; height: 124px;
  border: 2px solid #E8E8E8;
  border-radius: 10px;
  object-fit: cover;
  display: block;
  background: #f8faff;
}
.ab-wechat-name {
  font-size: .8125rem; font-weight: 600;
  color: #1A2332;
  margin-top: .5rem;
}
.ab-qq-label {
  font-size: .75rem; font-weight: 700;
  color: #5a6578;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0 0 .625rem;
  text-align: center;
}

.ab-qq-list { display: flex; flex-direction: column; gap: .625rem; }
.ab-qq-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 1rem; background: #f8faff;
  border: 1px solid rgba(0,149,255,.12); border-radius: 12px;
}
.ab-qq-name { font-weight: 700; color: #1A2332; }
.ab-qq-num { font-size: .875rem; color: #5a6578; font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.ab-copy-btn {
  background: #0095FF; color: #fff; border: none; cursor: pointer;
  padding: .375rem .75rem; border-radius: 8px;
  font-size: .8125rem; font-weight: 600;
  transition: opacity .15s;
  white-space: nowrap;
}
.ab-copy-btn:hover { opacity: .88; }

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

/* Tablet */
@media (max-width: 900px) {
  .ab-hero-stats { justify-content: flex-start; }
  .ab-plans { grid-template-columns: 1fr; gap: 20px; }
  .ab-plan.featured { transform: none; }
  .ab-soons, .ab-whys { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile (≤768px) */
@media (max-width: 768px) {
  .ab-hero {
    padding: clamp(114px, 24vw, 140px) 0 clamp(48px, 9vw, 72px);
  }
  .ab-hero-inner { gap: clamp(1.5rem, 5vw, 2.25rem); }
  .ab-hero-badge {
    font-size: .75rem; padding: .3rem .85rem; margin-bottom: 1.125rem;
  }
  .ab-hero-badge svg { width: 12px; height: 12px; }
  .ab-hero-title {
    font-size: clamp(1.75rem, 7.5vw, 2.25rem);
    line-height: 1.22; margin-bottom: .875rem;
  }
  .ab-hero-title-tail {
    font-size: clamp(1rem, 4.2vw, 1.25rem);
    font-weight: 500; margin-top: .625rem;
    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;
  }
  .ab-hero-subtitle { font-size: .9375rem; line-height: 1.7; color: rgba(255,255,255,.72); }
  .ab-hero-stat { padding: .5rem .875rem; font-size: .8125rem; border-radius: 12px; }
  .ab-hero-stat strong { font-size: 1rem; }

  .ab-section { padding: 64px 0 56px; }
  .ab-section-head { margin-bottom: 32px; }

  .ab-funcs { grid-template-columns: 1fr; gap: 14px; }
  .ab-func { padding: 22px; gap: 14px; }
  .ab-func-icon { width: 44px; height: 44px; }
  .ab-func-name { font-size: 1rem; }

  .ab-cta { padding: 64px 0; }

  .ab-modal-content { padding: 1.75rem; }
}

/* Compact mobile (≤640px) */
@media (max-width: 640px) {
  .ab-soons, .ab-whys { grid-template-columns: 1fr; }
  .ab-plan { padding: 32px 22px 28px; }
  .ab-plan-price-amount { font-size: 2.25rem; }
  .ab-cta-actions { flex-direction: column; align-items: center; }
}

/* Very small (≤380px) */
@media (max-width: 380px) {
  .ab-hero-stats { gap: .4rem; }
  .ab-hero-stat { padding: .45rem .75rem; font-size: .75rem; }
  .ab-hero-stat strong { font-size: .9375rem; }
  .ab-hero-badge { font-size: .7rem; padding: .25rem .7rem; }
}

/* ── 你适合哪种方案 ────────────────────────────────────────── */

.ab-fit-rows {
  display: flex; flex-direction: column; gap: .625rem;
  margin-bottom: 2.75rem;
}
.ab-fit-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem 1.5rem;
  background: #fff;
  border: 1px solid var(--neutral-gray-200);
  border-radius: 12px;
  padding: 1rem 1.375rem;
  transition: box-shadow .2s, border-color .2s;
}
.ab-fit-row:hover {
  box-shadow: 0 4px 18px rgba(0,149,255,.09);
  border-color: rgba(0,149,255,.3);
}
.ab-fit-pain {
  display: flex; align-items: center; gap: .875rem;
  font-size: .9375rem; color: var(--neutral-gray-700); line-height: 1.5;
}
.ab-fit-pain-icon {
  flex-shrink: 0;
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--primary-blue-alpha);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary-blue);
}
.ab-fit-mid {
  display: flex; align-items: center; gap: .75rem; flex-shrink: 0;
}
.ab-fit-arrow-icon { color: var(--neutral-gray-400); flex-shrink: 0; }
.ab-fit-func {
  display: flex; flex-direction: column; align-items: flex-end; gap: .2rem;
  white-space: nowrap;
}
.ab-fit-func-name {
  font-size: .875rem; font-weight: 600; color: var(--neutral-gray-800);
}
.ab-fit-cost {
  font-size: .7125rem; color: var(--primary-blue);
  background: var(--primary-blue-alpha); border-radius: 6px;
  padding: .15rem .5rem; font-weight: 500;
}
.ab-fit-badge {
  flex-shrink: 0; white-space: nowrap;
  font-size: .7125rem; font-weight: 700;
  padding: .3rem .8rem; border-radius: 9999px;
}
.badge-lite  { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }
.badge-pro   { background: #eff6ff; color: var(--primary-blue-dark); border: 1px solid #bfdbfe; }
.badge-ultra { background: #faf5ff; color: #7e22ce; border: 1px solid #e9d5ff; }

/* Volume grid */
.ab-fit-vol-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
.ab-fit-vol-card {
  position: relative;
  background: #fff; border: 1px solid var(--neutral-gray-200);
  border-radius: 14px; padding: 1.375rem 7rem 1.375rem 1.25rem;
  transition: box-shadow .2s, border-color .2s;
}
.ab-fit-vol-card:hover {
  box-shadow: 0 4px 18px rgba(0,149,255,.1);
  border-color: rgba(0,149,255,.25);
}
.ab-fit-vol-card.featured {
  border-color: var(--primary-blue);
  box-shadow: 0 4px 24px rgba(0,149,255,.14);
}
.ab-fit-vol-rec {
  display: inline-block;
  font-size: .6875rem; font-weight: 700; letter-spacing: .4px;
  text-transform: uppercase; color: var(--primary-blue);
  background: var(--primary-blue-alpha); border-radius: 6px;
  padding: .175rem .55rem; margin-bottom: .625rem;
}
.ab-fit-vol-range {
  font-size: .9375rem; font-weight: 600; color: var(--neutral-gray-700);
  margin-bottom: .3rem;
}
.ab-fit-vol-name {
  font-size: .8125rem; color: var(--neutral-gray-500); margin-bottom: .75rem;
}
.ab-fit-vol-price {
  position: absolute; top: 1.375rem; right: 1.25rem;
  text-align: right;
  font-size: 1.375rem; font-weight: 800; color: var(--neutral-gray-900);
  line-height: 1.2; margin-bottom: 0;
}
.ab-fit-vol-price span { font-size: .8rem; font-weight: 400; color: var(--neutral-gray-500); }
.ab-fit-vol-note { font-size: .8125rem; color: var(--neutral-gray-400); line-height: 1.5; }
.ab-fit-vol-who {
  margin-top: .75rem; padding-top: .75rem;
  border-top: 1px solid var(--neutral-gray-100);
  font-size: .8125rem; color: var(--neutral-gray-500); line-height: 1.5;
}

@media (max-width: 900px) {
  .ab-fit-row { grid-template-columns: 1fr auto; }
  .ab-fit-mid { display: none; }
}
@media (max-width: 767px) {
  .ab-fit-row { grid-template-columns: 1fr auto; gap: .75rem 1rem; }
  .ab-fit-vol-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .ab-fit-row { grid-template-columns: 1fr; }
  .ab-fit-badge { align-self: flex-start; }
}