/* ==========================================
 * 星枢 API · 首页 — v4
 * ========================================== */

/* ── Lucide Sizing ── */
.st-icon i,
.fc-icon i {
  width: 26px;
  height: 26px
}

.fc-arrow i {
  width: 14px;
  height: 14px
}

.adv-icon i {
  width: 22px;
  height: 22px
}

.bill-icon i {
  width: 24px;
  height: 24px
}

.contact-badge i {
  width: 24px;
  height: 24px
}

/* ==========================================
   Hero
   ========================================== */
.hero {
  background: linear-gradient(170deg, #eef2ff 0%, #f5f7ff 20%, #fafbff 50%, var(--c-bg) 100%);
  text-align: center;
  padding: 88px 24px 108px;
  overflow: hidden;
  position: relative;
  isolation: isolate;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: .32;
  background-image: radial-gradient(rgba(67, 97, 238, .1) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
  z-index: 0;
}

.hero-bloom-1 {
  position: absolute;
  top: -200px;
  right: -140px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 92, 231, .11) 0%, transparent 65%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: heroFloat 8s ease-in-out infinite;
}

.hero-bloom-2 {
  position: absolute;
  bottom: -180px;
  left: -120px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(67, 97, 238, .08) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: heroFloat 10s ease-in-out infinite reverse;
}

.hero-bloom-3 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 760px;
  height: 760px;
  background: radial-gradient(circle, rgba(67, 97, 238, .035) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

@keyframes heroFloat {

  0%,
  100% {
    transform: translate(0, 0) scale(1)
  }

  50% {
    transform: translate(16px, -18px) scale(1.05)
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .68rem;
  font-weight: 700;
  color: var(--c-primary);
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(67, 97, 238, .1);
  padding: 7px 22px;
  border-radius: 24px;
  margin-bottom: 28px;
  letter-spacing: .5px;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 16px rgba(67, 97, 238, .05);
}

.hero-badge::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
  box-shadow: 0 0 0 2px rgba(34, 197, 94, .2);
}

@keyframes pulse-dot {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(34, 197, 94, .5)
  }

  50% {
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0)
  }
}

.hero-title {
  font-size: 3.6rem;
  font-weight: 900;
  color: var(--c-heading);
  line-height: 1.12;
  letter-spacing: -2px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.hero-title em {
  font-style: normal;
  background: var(--c-primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: .9rem;
  color: var(--c-text-dim);
  line-height: 1.9;
  margin-bottom: 44px;
  position: relative;
  z-index: 1;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 36px;
  font-size: .85rem;
  font-weight: 700;
  border-radius: 14px;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.hero-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, .15);
  opacity: 0;
  transition: opacity var(--transition);
}

.hero-btn:active::after {
  opacity: 1
}

.hero-btn:active {
  transform: scale(.96)
}

.hero-btn--primary {
  background: var(--c-primary-gradient);
  color: #fff;
  box-shadow: 0 4px 32px rgba(67, 97, 238, .32);
}

.hero-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 44px rgba(67, 97, 238, .44);
}

.hero-btn--outline {
  color: var(--c-primary);
  border: 1.5px solid rgba(67, 97, 238, .16);
  background: rgba(255, 255, 255, .7);
  backdrop-filter: blur(4px);
}

.hero-btn--outline:hover {
  background: rgba(67, 97, 238, .04);
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(67, 97, 238, .08);
}

@media (max-width:750px) {
  .hero {
    padding: 52px 20px 68px
  }

  .hero-title {
    font-size: 2.3rem;
    letter-spacing: -1px
  }

  .hero-sub {
    font-size: .8rem
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch
  }

  .hero-btn {
    width: 100%;
    justify-content: center;
    padding: 15px 24px
  }
}

/* ==========================================
   Platform Advantages
   ========================================== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 60px;
}

.adv-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 22px 20px;
  transition: all var(--transition);
  cursor: default;
}

.adv-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .05);
  border-color: rgba(67, 97, 238, .12);
}

.adv-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.adv-item:hover .adv-icon {
  transform: scale(1.08)
}

.adv-icon--precision {
  background: rgba(67, 97, 238, .07);
  color: var(--c-primary)
}

.adv-icon--multi {
  background: rgba(124, 58, 237, .07);
  color: #7c3aed
}

.adv-icon--eastwest {
  background: rgba(8, 145, 178, .07);
  color: #0891b2
}

.adv-icon--svg {
  background: rgba(230, 81, 0, .07);
  color: var(--c-warning)
}

.adv-icon--billing {
  background: rgba(46, 125, 50, .07);
  color: var(--c-success)
}

.adv-icon--perf {
  background: rgba(198, 40, 40, .07);
  color: var(--c-danger)
}

.adv-label {
  font-size: .82rem;
  font-weight: 700;
  color: var(--c-heading);
  margin-bottom: 4px;
}

.adv-desc {
  font-size: .72rem;
  color: var(--c-text-dim);
  line-height: 1.55;
  margin: 0;
}

@media (max-width:860px) {
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px
  }

  .adv-item {
    padding: 18px 14px;
    gap: 10px
  }

  .adv-icon {
    width: 38px;
    height: 38px
  }
}

@media (max-width:500px) {
  .advantage-grid {
    grid-template-columns: 1fr
  }
}

/* ==========================================
   Section Title
   ========================================== */
.section-title {
  font-size: .78rem;
  font-weight: 800;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 2.5px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--c-border), transparent);
}

.faq-section {
  margin-top: 44px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.faq-item {
  padding: 18px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
}

.faq-item h3 {
  color: var(--c-heading);
  font-size: .88rem;
  line-height: 1.45;
}

.faq-item p {
  margin-top: 8px;
  color: var(--c-text-dim);
  font-size: .76rem;
  line-height: 1.75;
}

@media (max-width: 850px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   Feature Cards (星盘服务)
   ========================================== */
.feat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 60px;
}

@media (max-width:750px) {
  .feat-grid {
    grid-template-columns: 1fr
  }
}

.feat-card {
  display: flex;
  gap: 22px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 18px;
  padding: 30px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .02);
}

.feat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 18px;
  padding: 1px;
  background: var(--c-primary-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .4s;
}

.feat-card:hover::before {
  opacity: .22
}

.feat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(67, 97, 238, .08)
}

.feat-card:active {
  transform: scale(.98)
}

.feat-card .fc-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}

.feat-card:hover .fc-icon {
  transform: scale(1.06)
}

.fc-icon-v1 {
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  color: var(--c-success)
}

.fc-icon-v2 {
  background: linear-gradient(135deg, #ede7f6, #d1c4e9);
  color: #4527a0
}

.fc-icon-zodiac {
  background: linear-gradient(135deg, #fff3e0, #ffe0b2);
  color: var(--c-warning)
}

.fc-icon-lunar {
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  color: #1565c0
}

.fc-icon-poem {
  background: linear-gradient(135deg, #fff8e1, #ffecb3);
  color: #9a6700
}

.fc-icon-ziwei {
  background: linear-gradient(135deg, #fce4ec, #f8bbd0);
  color: #ad1457
}

.fc-icon-docs {
  background: linear-gradient(135deg, #fce4e4, #ffcdd2);
  color: var(--c-danger)
}

.feat-card .fc-body {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1
}

.feat-card .fc-title {
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--c-heading);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.feat-card .fc-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: rgba(67, 97, 238, .08);
  border-radius: 6px;
  color: var(--c-primary);
  opacity: 0;
  transform: translateX(-6px);
  transition: all var(--transition);
}

.feat-card:hover .fc-arrow {
  opacity: 1;
  transform: translateX(0)
}

.feat-card .fc-desc {
  font-size: .78rem;
  color: var(--c-text-dim);
  line-height: 1.7;
  margin-bottom: 12px
}

.feat-card .fc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px
}

.feat-card .fc-meta span {
  font-size: .64rem;
  padding: 4px 10px;
  background: var(--c-bg-alt);
  border-radius: 20px;
  color: var(--c-text-dim);
  font-weight: 600;
  border: 1px solid var(--c-border-light);
}

/* feature card badge */
.fc-badge {
  font-size: .56rem;
  font-weight: 700;
  color: #fff;
  background: var(--c-success);
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: .3px;
  vertical-align: middle;
}

.fc-badge--purple {
  background: #7c3aed
}

.fc-badge--billable {
  background: #e65100
}

.fc-badge--free {
  background: #2e7d32
}

/* ==========================================
   Docs CTA Banner
   ========================================== */
.docs-cta {
  display: block;
  text-decoration: none;
  margin-bottom: 60px;
}

.docs-cta-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 18px;
  padding: 28px 32px;
  transition: all var(--transition);
}

.docs-cta:hover .docs-cta-inner {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, .06);
  border-color: rgba(67, 97, 238, .15);
}

.docs-cta-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, #fce4e4, #ffcdd2);
  color: var(--c-danger);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.docs-cta-icon i {
  width: 26px;
  height: 26px
}

.docs-cta:hover .docs-cta-icon {
  transform: scale(1.06)
}

.docs-cta-body {
  flex: 1;
  min-width: 0
}

.docs-cta-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--c-heading);
  margin-bottom: 4px
}

.docs-cta-desc {
  font-size: .76rem;
  color: var(--c-text-dim);
  line-height: 1.6
}

.docs-cta-arrow {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  transition: all var(--transition);
  flex-shrink: 0;
}

.docs-cta:hover .docs-cta-arrow {
  color: var(--c-primary);
  transform: translateX(4px)
}

@media (max-width:750px) {
  .docs-cta-inner {
    padding: 22px 20px;
    gap: 14px
  }

  .docs-cta-icon {
    width: 42px;
    height: 42px
  }

  .docs-cta-title {
    font-size: .92rem
  }
}

/* ==========================================
   Code Block
   ========================================== */
.code-block {
  background: #1a1b2e;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 60px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, .12);
}

.code-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: #151628;
  border-bottom: 1px solid rgba(255, 255, 255, .04);
}

.code-dots {
  display: flex;
  gap: 7px
}

.code-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.code-dots span:nth-child(1) {
  background: #ff5f57
}

.code-dots span:nth-child(2) {
  background: #ffbd2e
}

.code-dots span:nth-child(3) {
  background: #28ca41
}

.code-lang {
  font-size: .64rem;
  color: rgba(255, 255, 255, .3);
  font-weight: 600;
  letter-spacing: .5px
}

.code-pre {
  padding: 24px 28px;
  margin: 0;
  overflow-x: auto;
  font-family: "SF Mono", "JetBrains Mono", "Consolas", monospace;
  font-size: .78rem;
  line-height: 1.75;
  color: #e2e4ed;
}

.code-pre code {
  color: inherit
}

.code-pre .co {
  color: #636d83
}

.code-pre .st {
  color: #a5d6ff
}

.code-pre .se {
  color: #7c8ba0
}

@media (max-width:750px) {
  .code-pre {
    padding: 18px 16px;
    font-size: .7rem
  }
}

/* ==========================================
   Billing Cards
   ========================================== */
.billing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

@media (max-width:860px) {
  .billing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto
  }
}

.bill-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-top: 4px solid var(--c-primary);
  border-radius: 20px;
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.bill-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, .06)
}

.bill-hd {
  padding: 32px 24px 0;
  text-align: center
}

.bill-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  margin: 0 auto 16px;
  border-radius: 14px;
  transition: transform var(--transition);
}

.bill-card:hover .bill-icon {
  transform: scale(1.06)
}

.bill-label {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--c-heading);
  margin-bottom: 6px
}

.bill-type {
  font-size: .64rem;
  font-weight: 700;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  opacity: .8;
}

.bill-tiers {
  padding: 22px 20px 0
}

.tier-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 12px;
  border-radius: 10px;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.tier-row:hover {
  background: var(--c-bg-alt);
  transform: translateX(3px)
}

.tier-row+.tier-row {
  border-top: 1px dashed var(--c-border-light)
}

.tier-recommend {
  background: var(--c-bg-alt);
  border-radius: 10px;
  position: relative;
  margin: 6px -4px;
  padding: 14px 16px;
  border: 1px solid rgba(67, 97, 238, .08);
}

.tier-recommend+.tier-row {
  border-top: none
}

.tier-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-align: left
}

.tier-name {
  font-size: .84rem;
  font-weight: 700;
  color: var(--c-heading)
}

.tier-tag {
  display: inline-block;
  font-size: .56rem;
  font-weight: 800;
  color: #fff;
  background: var(--c-primary);
  padding: 2px 8px;
  border-radius: 8px;
  align-self: flex-start;
  margin: 3px 0;
  text-transform: uppercase;
  letter-spacing: .5px;
  position: absolute;
  top: -3px;
  right: 1px;
}

.tier-quota {
  font-size: .68rem;
  color: var(--c-text-dim)
}

.tier-price {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--c-heading);
  letter-spacing: -.5px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.tier-row:hover .tier-price {
  transform: scale(1.06)
}

.tier-price sup {
  font-size: .7rem;
  font-weight: 700;
  margin-right: 1px;
  vertical-align: super
}

.tier-price sub {
  font-size: .56rem;
  font-weight: 600;
  color: var(--c-text-muted);
  margin-left: 1px;
  vertical-align: sub
}

.bill-foot {
  padding: 18px 24px 24px;
  font-size: .66rem;
  color: var(--c-text-muted);
  text-align: center;
  border-top: 1px solid var(--c-border-light);
  margin-top: auto;
}

/* type colors */
.bill-count {
  border-top-color: var(--c-primary)
}

.bill-count .bill-icon {
  background: rgba(67, 97, 238, .07);
  color: var(--c-primary)
}

.bill-count .tier-price {
  color: var(--c-primary)
}

.bill-count:hover {
  border-color: rgba(67, 97, 238, .18);
  border-top-color: var(--c-primary);
  box-shadow: 0 16px 48px rgba(67, 97, 238, .08)
}

.bill-periodic {
  border-top-color: #7c3aed
}

.bill-periodic .bill-icon {
  background: rgba(124, 58, 237, .07);
  color: #7c3aed
}

.bill-periodic .tier-price {
  color: #7c3aed
}

.bill-periodic:hover {
  border-color: rgba(124, 58, 237, .18);
  border-top-color: #7c3aed;
  box-shadow: 0 16px 48px rgba(124, 58, 237, .08)
}

.bill-time {
  border-top-color: #0891b2
}

.bill-time .bill-icon {
  background: rgba(8, 145, 178, .07);
  color: #0891b2
}

.bill-time .tier-price {
  color: #0891b2
}

.bill-time:hover {
  border-color: rgba(8, 145, 178, .18);
  border-top-color: #0891b2;
  box-shadow: 0 16px 48px rgba(8, 145, 178, .08)
}

/* ==========================================
   Mini Program
   ========================================== */
.miniapp-section {
  margin-bottom: 60px
}

.miniapp-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .03);
}

.miniapp-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(67, 97, 238, .08);
  border-color: rgba(67, 97, 238, .15)
}

.miniapp-body {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 42px 40px 36px
}

@media (max-width:750px) {
  .miniapp-body {
    flex-direction: column-reverse;
    text-align: center;
    padding: 40px 20px 28px;
    gap: 0
  }
}

.miniapp-info {
  flex: 1;
  min-width: 0
}

.miniapp-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--c-heading);
  margin: 0 0 10px
}

.miniapp-desc {
  font-size: .78rem;
  color: var(--c-text-dim);
  line-height: 1.75;
  margin: 0 0 16px
}

.miniapp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px
}

@media (max-width:750px) {
  .miniapp-tags {
    justify-content: center
  }
}

.miniapp-tags span {
  font-size: .66rem;
  padding: 5px 12px;
  background: rgba(7, 193, 96, .06);
  color: #07c160;
  border-radius: 20px;
  font-weight: 700;
  border: 1px solid rgba(7, 193, 96, .15);
}

.miniapp-qr {
  flex-shrink: 0;
  text-align: center
}

.miniapp-qr .qr-wrap {
  width: 160px;
  margin: 0 auto 12px;
  border-radius: 16px;
  overflow: hidden;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.miniapp-qr .qr-tip {
  font-size: .68rem;
  color: var(--c-text-muted)
}

/* ==========================================
   Contact
   ========================================== */
.contact-intro {
  text-align: center;
  margin-bottom: 28px
}

.contact-intro p {
  font-size: .8rem;
  color: var(--c-text-dim);
  line-height: 1.85
}

.contact-intro strong {
  color: var(--c-primary);
  font-weight: 700
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 28px
}

@media (max-width:750px) {
  .contact-grid {
    grid-template-columns: repeat(2, 1fr)
  }
}

.contact-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 36px 24px 24px;
  text-align: center;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, .07)
}

.contact-badge {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .12);
  transition: transform var(--transition);
}

.contact-card:hover .contact-badge {
  transform: translateX(-50%) scale(1.08)
}

.contact-card--wechat .contact-badge {
  background: linear-gradient(135deg, #07c160, #06ad56)
}

.contact-card--qq .contact-badge {
  background: linear-gradient(135deg, #1296db, #0d8bc4)
}

.qr-wrap {
  width: 180px;
  height: 180px;
  margin: 14px 0 20px;
  border-radius: 18px;
  overflow: hidden;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.contact-card:hover .qr-wrap {
  box-shadow: 0 8px 28px rgba(0, 0, 0, .08);
  transform: scale(1.03)
}

.qr-img {
  width: 100%;
  height: 100%;
  object-fit: contain
}

.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--c-text-muted);
  font-size: .72rem;
  text-align: center;
}

.qr-label {
  font-size: 1rem;
  font-weight: 800;
  color: var(--c-heading);
  margin-bottom: 6px
}

.qr-tip {
  font-size: .72rem;
  color: var(--c-text-muted);
  margin-bottom: 16px
}

.contact-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding-top: 14px;
  border-top: 1px solid var(--c-border-light);
}

.cm-tag {
  font-size: .6rem;
  font-weight: 800;
  color: #fff;
  background: var(--c-primary);
  padding: 3px 9px;
  border-radius: 4px;
  letter-spacing: .3px;
  flex-shrink: 0;
}

.cm-tag--alt {
  background: #94a3b8
}

.cm-text {
  font-size: .68rem;
  color: var(--c-text-dim)
}

/* ==========================================
   Calculation Methods
   ========================================== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 60px;
}

.method-item {
  display: flex;
  gap: 1rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 1.25rem 1.25rem 1.25rem 1rem;
  transition: border-color .2s, box-shadow .2s;
}

.method-item:hover {
  border-color: var(--c-primary);
  box-shadow: 0 4px 16px rgba(67, 97, 238, .04);
}

.mi-index {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  font-family: "SF Mono", "JetBrains Mono", "Consolas", monospace;
  color: var(--c-primary);
  background: linear-gradient(135deg, #4361ee14, #4361ee06);
  margin-top: 1px;
}

.mi-body {
  flex: 1
}

.mi-title {
  font-size: .88rem;
  font-weight: 700;
  color: var(--c-heading);
  margin-bottom: .45rem;
  line-height: 1.35
}

.mi-desc {
  font-size: .78rem;
  color: var(--c-text);
  line-height: 1.7;
  margin: 0
}

.mi-desc a {
  color: var(--c-primary);
  text-decoration: none;
  border-bottom: 1px dashed currentColor
}

.mi-desc a:hover {
  border-bottom-style: solid
}

@media (max-width:860px) {
  .method-grid {
    grid-template-columns: 1fr;
    gap: .75rem
  }

  .method-item {
    padding: 1rem .9rem 1rem .75rem
  }
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width:750px) {
  .feat-card {
    padding: 24px 18px;
    gap: 16px
  }

  .feat-card .fc-title {
    font-size: .95rem
  }

  .bill-hd {
    padding: 24px 18px 0
  }

  .tier-row {
    padding: 12px 10px
  }

  .tier-price {
    font-size: 1.3rem
  }

  .qr-wrap {
    width: auto;
    height: auto;
    margin: 0 0 8px
  }

  .contact-badge {
    top: -15px;
    width: 40px;
    height: 40px;
    border-radius: 12px
  }

  .qr-label {
    font-size: .8rem
  }

  .qr-tip {
    font-size: .68rem;
    margin-bottom: 16px
  }
}