/* ============================================================
   板块：Hero / 能力 / 场景 / 数据 / 套餐 / FAQ / CTA
   ============================================================ */

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: 120px var(--s-10);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

/* 网格底纹 */
.hero__grid {
  position: absolute;
  inset: -20%;
  background-image: linear-gradient(var(--line-1) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-1) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 42%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(
    ellipse 70% 55% at 50% 42%,
    #000 0%,
    transparent 75%
  );
  opacity: 0.55;
}

/* 光晕 */
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  animation: floatSlow 16s ease-in-out infinite;
}

.hero__glow--a {
  width: 560px;
  height: 560px;
  top: -8%;
  left: 8%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.28), transparent 65%);
}

.hero__glow--b {
  width: 480px;
  height: 480px;
  top: 18%;
  right: 4%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.22), transparent 65%);
  animation-delay: -6s;
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--s-5);
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 7px 16px;
  margin-bottom: var(--s-6);
  font-size: 0.82rem;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-2);
  border-radius: 100px;
  backdrop-filter: blur(10px);
}

.hero__badge b {
  color: var(--brand-3);
  font-weight: 600;
}

.hero h1 {
  max-width: 900px;
  margin-inline: auto;
}

.hero__lead {
  max-width: 640px;
  margin: var(--s-5) auto 0;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.85;
  color: var(--text-3);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  margin-top: var(--s-7);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-3) var(--s-6);
  margin-top: var(--s-7);
  font-size: 0.85rem;
  color: var(--text-4);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero__meta span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 8px var(--ok);
}

/* ---------- 能力卡片网格 ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}

/* 首卡跨两列，形成视觉重点 */
.cap-grid .card--wide {
  grid-column: span 2;
}

/* ---------- 场景轮播 ---------- */
.scene {
  position: relative;
  border: 1px solid var(--line-2);
  border-radius: var(--r-xl);
  background: var(--bg-1);
  overflow: hidden;
}

.scene__viewport {
  overflow: hidden;
}

.scene__track {
  display: flex;
  transition: transform 0.6s var(--ease-in-out);
}

.scene__slide {
  flex: 0 0 100%;
  padding: var(--s-7) var(--s-6);
}

.scene__index {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  margin-bottom: var(--s-4);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--brand-3);
  text-transform: uppercase;
}

.scene__slide h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  margin-bottom: var(--s-4);
}

.scene__slide p {
  max-width: 640px;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-3);
}

.scene__points {
  display: grid;
  gap: var(--s-3);
  margin-top: var(--s-5);
  list-style: none;
}

.scene__points li {
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  font-size: 0.9rem;
  color: var(--text-2);
}

.scene__points li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--brand-3);
}

.scene__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4) var(--s-6);
  border-top: 1px solid var(--line-1);
}

.scene__dots {
  display: flex;
  gap: var(--s-2);
}

.scene__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-3);
  transition: width 0.35s var(--ease-out), background 0.35s var(--ease-out);
}

.scene__dot[data-active="true"] {
  width: 26px;
  border-radius: 4px;
  background: var(--brand-3);
}

.scene__arrows {
  display: flex;
  gap: var(--s-2);
}

.scene__arrow {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: var(--text-3);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.scene__arrow:hover {
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--line-3);
}

/* ---------- 数据背书 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-5);
  padding: var(--s-7) var(--s-6);
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: var(--r-xl);
}

.stat {
  text-align: center;
}

.stat__num {
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.stat__num small {
  font-size: 0.5em;
  font-weight: 600;
  color: var(--brand-3);
  margin-left: 2px;
}

.stat__label {
  margin-top: var(--s-2);
  font-size: 0.84rem;
  color: var(--text-4);
}

/* ---------- 套餐 ---------- */
.plans {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-5);
  max-width: 780px;
  margin-inline: auto;
}

.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--s-6);
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-xl);
  transition: transform 0.4s var(--ease-out),
    border-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.plan:hover {
  transform: translateY(-5px);
  border-color: var(--line-3);
  box-shadow: var(--shadow-lg);
}

.plan--hot {
  border-color: rgba(59, 130, 246, 0.45);
  background: linear-gradient(
    165deg,
    rgba(59, 130, 246, 0.1) 0%,
    var(--bg-2) 45%
  );
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.12),
    0 16px 48px rgba(59, 130, 246, 0.16);
}

.plan--hot::before {
  content: "推荐";
  position: absolute;
  top: var(--s-5);
  right: var(--s-5);
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--grad-brand);
  border-radius: 100px;
}

.plan__name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-2);
}

.plan__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: var(--s-4);
}

.plan__price .cur {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-3);
}

.plan__price .num {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--text-1);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.plan__price .unit {
  font-size: 0.85rem;
  color: var(--text-4);
}

.plan__desc {
  margin-top: var(--s-3);
  font-size: 0.88rem;
  color: var(--text-3);
}

.plan__list {
  display: grid;
  gap: var(--s-3);
  margin: var(--s-5) 0;
  list-style: none;
  flex: 1;
}

.plan__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  font-size: 0.88rem;
  color: var(--text-2);
}

.plan__list li::before {
  content: "✓";
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 17px;
  height: 17px;
  margin-top: 3px;
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--ok);
  background: rgba(34, 197, 94, 0.12);
  border-radius: 50%;
}

.plan__cta {
  width: 100%;
  margin-top: auto;
}

.plans__note {
  margin-top: var(--s-6);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-4);
}

/* ---------- FAQ ---------- */
.faq {
  display: grid;
  gap: var(--s-3);
}

.faq__item {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.3s var(--ease-out),
    background 0.3s var(--ease-out);
}

.faq__item:hover {
  border-color: var(--line-3);
}

.faq__item[open] {
  border-color: rgba(59, 130, 246, 0.35);
  background: var(--bg-3);
}

.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-5);
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-1);
  cursor: pointer;
  list-style: none;
}

.faq__q::-webkit-details-marker {
  display: none;
}

.faq__q::after {
  content: "";
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  border-right: 1.6px solid var(--text-3);
  border-bottom: 1.6px solid var(--text-3);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.35s var(--ease-out),
    border-color 0.35s var(--ease-out);
}

.faq__item[open] .faq__q::after {
  transform: rotate(-135deg) translateY(-2px);
  border-color: var(--brand-3);
}

.faq__a {
  padding: 0 var(--s-5) var(--s-5);
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--text-3);
}

.faq__a a {
  color: var(--brand-3);
  border-bottom: 1px solid rgba(34, 211, 238, 0.3);
}

.faq__a a:hover {
  color: var(--brand-1);
  border-bottom-color: var(--brand-1);
}

/* ---------- CTA 区块 ---------- */
.cta {
  position: relative;
  padding: var(--s-9) var(--s-6);
  text-align: center;
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: var(--r-xl);
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: -60%;
  left: 50%;
  width: 620px;
  height: 620px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(59, 130, 246, 0.2), transparent 62%);
  filter: blur(70px);
  pointer-events: none;
}

.cta__inner {
  position: relative;
  z-index: 1;
}

.cta h2 {
  max-width: 620px;
  margin-inline: auto;
}

.cta p {
  max-width: 520px;
  margin: var(--s-4) auto 0;
  font-size: 1rem;
  color: var(--text-3);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  margin-top: var(--s-7);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cap-grid .card--wide {
    grid-column: span 2;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--s-6);
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding-block: 100px var(--s-9);
  }

  .hero__actions .btn {
    width: 100%;
  }

  .cap-grid,
  .plans {
    grid-template-columns: 1fr;
  }

  .cap-grid .card--wide {
    grid-column: span 1;
  }

  .scene__slide {
    padding: var(--s-6) var(--s-5);
  }

  .scene__controls {
    padding: var(--s-4) var(--s-5);
  }

  .stats {
    padding: var(--s-6) var(--s-5);
  }

  .cta {
    padding: var(--s-8) var(--s-5);
  }
}