/* ==========================================================================
   page-share.css — 单文件分享版落地页
   ========================================================================== */

/* ------------------------------ Hero ------------------------------ */
.sf-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(3.5rem, 8vw, 7rem) clamp(3rem, 6vw, 5.5rem);
}

.sf-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.sf-hero__halo {
  width: 52vw;
  height: 52vw;
  max-width: 720px;
  max-height: 720px;
  right: -16vw;
  top: -22vw;
  background: radial-gradient(circle, rgba(255, 47, 110, 0.85), transparent 66%);
}

.sf-hero__band {
  position: absolute;
  height: 12px;
  border-radius: var(--r-pill);
  opacity: 0.55;
}

.sf-hero__band--rose {
  width: 120%;
  left: -10%;
  top: 24%;
  background: linear-gradient(90deg, transparent, var(--rose), transparent);
  transform: rotate(-6deg);
}

.sf-hero__band--mint {
  width: 110%;
  left: -5%;
  bottom: 20%;
  height: 7px;
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
  transform: rotate(3deg);
}

.sf-hero__inner {
  position: relative;
  z-index: 2;
}

.sf-hero__kicker {
  color: var(--mint);
}

.sf-hero__title {
  margin: 1.4rem 0 0;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.05;
  color: var(--tx-dark);
}

.sf-hero__lead {
  margin-top: 1.5rem;
  max-width: 62ch;
  color: var(--fg-dim);
}

.sf-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.2rem;
}

.sf-meta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-dark);
}

.sf-meta strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1;
  color: var(--tx-dark);
}

.sf-meta span {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.84rem;
  color: var(--fg-dim);
}

/* ------------------------------ Inside ------------------------------ */
.sf-inside {
  background: var(--cream);
  color: var(--tx-light);
}

.sf-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.3rem);
}

.sf-card {
  padding: clamp(1.3rem, 2.2vw, 1.8rem);
  border-radius: var(--r-lg);
  border: 1.5px solid var(--line-light);
  min-height: 230px;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.sf-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-float);
}

.sf-card__no {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--tx-light-dim);
}

.sf-card h3 {
  margin: 1.1rem 0 0;
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
}

.sf-card p {
  margin: 0.7rem 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--tx-light-dim);
}

.sf-card--rose {
  background: var(--pink);
}

.sf-card--violet {
  background: var(--violet);
  color: #fff;
}

.sf-card--violet .sf-card__no,
.sf-card--violet p {
  color: rgba(255, 255, 255, 0.92);
}

.sf-card--mint {
  background: var(--mint-soft);
}

.sf-card--cream {
  background: var(--white);
}

/* ------------------------------ Why ------------------------------ */
.sf-why__kicker {
  color: var(--accent);
}

.sf-why__title {
  margin: 1.2rem 0 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  color: #fff;
}

.sf-why__text {
  margin-top: 1.3rem;
  max-width: 46ch;
  color: rgba(255, 255, 255, 0.92);
}

.sf-why__card {
  padding: clamp(1.5rem, 3vw, 2.4rem);
}

.sf-why__card h3 {
  margin: 0 0 1.2rem;
  font-size: 1.35rem;
}

.sf-steps {
  display: grid;
  gap: 1rem;
}

.sf-steps li {
  display: grid;
  gap: 0.25rem;
  padding-left: 1.1rem;
  border-left: 3px solid var(--rose);
}

.sf-steps b {
  font-size: 1rem;
  color: var(--tx-light);
}

.sf-steps span {
  font-size: 0.9rem;
  color: var(--tx-light-dim);
}

.sf-why__note {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line-light-strong);
  font-size: 0.82rem;
  color: var(--tx-light-dim);
}

/* ------------------------------ CTA ------------------------------ */
.sf-cta__inner {
  text-align: center;
}

.sf-cta__title {
  font-size: clamp(2rem, 4.4vw, 3.8rem);
  color: #fff;
}

.sf-cta__line {
  margin-top: 1rem;
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  color: rgba(255, 255, 255, 0.95);
}

.sf-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  margin-top: 2rem;
}

.sf-cta__note {
  margin-top: 2rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.86);
}

/* ------------------------------ Responsive ------------------------------ */
@media (max-width: 980px) {
  .sf-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sf-card {
    min-height: 0;
  }
}

@media (max-width: 560px) {
  .sf-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .sf-hero__actions .btn,
  .sf-cta__actions .btn {
    width: 100%;
  }

  .sf-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem;
  }
}