/* product.css - product sub-pages (.byc-phero + plans + scenes + FAQ + specs + steps + TLDs + acts + buy + linux cards) */
/* .byc-feat* 已抽至 base.css (home.html 也用此范式, 公共层) */

/* =====================================================
   技术参数对比表 (technical-params)
   横向: 1 列字段名 + N 列套餐 (mobile 横滑)
   ===================================================== */
.byc-specs-wrapper {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--byc-sd-sm);
}
.byc-specs { width: 100%; border-collapse: collapse; min-width: 720px; }
.byc-specs thead th {
  padding: 16px 14px;
  text-align: center;
  font-size: 14px; font-weight: 600;
  background: var(--byc-bg-light);
  color: var(--byc-text);
  border-bottom: 1px solid var(--byc-border);
  white-space: nowrap;
}
.byc-specs thead th:first-child {
  text-align: left;
  background: #fff;
  position: sticky; left: 0; z-index: 2;
  border-right: 1px solid var(--byc-border);
}
.byc-specs tbody td {
  padding: 14px;
  text-align: center;
  font-size: 13px;
  color: var(--byc-text-sec);
  border-bottom: 1px solid var(--byc-border);
}
.byc-specs tbody tr:last-child td { border-bottom: 0; }
.byc-specs tbody tr:hover td { background: rgba(43,109,232,0.03); }
.byc-specs-label {
  text-align: left !important;
  font-weight: 500;
  color: var(--byc-text) !important;
  background: var(--byc-bg-light);
  position: sticky; left: 0; z-index: 1;
  border-right: 1px solid var(--byc-border);
  white-space: nowrap;
}
.byc-specs-price td { font-size: 15px; color: var(--byc-accent); }
.byc-specs-price strong { font-size: 18px; font-weight: 700; }
.byc-specs-yes { color: var(--byc-green); font-weight: 600; }
.byc-specs-no { color: var(--byc-text-mut); }
.byc-specs-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 6px 16px;
  font-size: 13px; font-weight: 500;
  color: #fff;
  background: var(--byc-grad-primary);
  border-radius: 6px;
  transition: var(--byc-trans);
}
.byc-specs-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(43,109,232,0.3); color: #fff; }

/* 横滑提示 (mobile) */
@media (max-width: 767px) {
  .byc-specs-wrapper { position: relative; }
  .byc-specs-wrapper::after {
    content: '← 滑动查看更多 →';
    display: block;
    text-align: center;
    padding: 8px;
    font-size: 12px;
    color: var(--byc-text-mut);
    background: var(--byc-bg-light);
    border-top: 1px solid var(--byc-border);
  }
}


/* =====================================================
   机房介绍 cards (机房介绍, 5 机房)
   ===================================================== */
.byc-dc-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .byc-dc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-dc-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .byc-dc-grid { grid-template-columns: repeat(5, 1fr); gap: 16px; } }

.byc-dc-card {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 24px 20px;
  transition: var(--byc-trans);
  position: relative;
  display: flex; flex-direction: column;
}
.byc-dc-card:hover {
  border-color: var(--byc-primary-100);
  box-shadow: var(--byc-sd-lg);
  transform: translateY(-4px);
}
.byc-dc-card-featured {
  background: linear-gradient(180deg, var(--byc-primary-50) 0%, #fff 60%);
  border-color: var(--byc-primary-100);
}
.byc-dc-card-featured::before {
  content: '推荐';
  position: absolute; top: -1px; right: -1px;
  padding: 4px 10px;
  font-size: 11px; font-weight: 600;
  color: #fff;
  background: var(--byc-grad-accent);
  border-radius: 0 var(--byc-r-xl) 0 var(--byc-r-md);
}
.byc-dc-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 8px; flex-wrap: wrap; }
.byc-dc-name { font-size: 18px; font-weight: 700; color: var(--byc-text); margin: 0; }
.byc-dc-tag {
  padding: 3px 10px;
  font-size: 11px; font-weight: 500;
  border-radius: var(--byc-r-full);
  white-space: nowrap;
}
.byc-dc-tag-blue   { background: rgba(43,109,232,0.10); color: var(--byc-primary); }
.byc-dc-tag-purple { background: rgba(139,92,246,0.10); color: var(--byc-purple); }
.byc-dc-tag-orange { background: rgba(255,106,0,0.10); color: var(--byc-accent); }
.byc-dc-tag-green  { background: rgba(16,185,129,0.10); color: var(--byc-green); }
.byc-dc-tag-red    { background: rgba(239,68,68,0.10); color: var(--byc-red); }

.byc-dc-brief {
  font-size: 13px; color: var(--byc-text-sec); line-height: 1.6;
  margin: 0 0 16px;
  min-height: 62px;
}
.byc-dc-feats {
  list-style: none; padding: 16px 0 0; margin: 0;
  border-top: 1px solid var(--byc-border);
  display: flex; flex-direction: column; gap: 8px;
}
.byc-dc-feats li {
  font-size: 12px; color: var(--byc-text-sec); line-height: 1.4;
}


/* =====================================================
   产品对比表 (产品功能对比)
   ===================================================== */
.byc-compare-wrapper {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--byc-sd-sm);
}
.byc-compare { width: 100%; border-collapse: collapse; min-width: 720px; }
.byc-compare thead th {
  padding: 18px 16px;
  text-align: center;
  font-size: 14px; font-weight: 600;
  color: var(--byc-text);
  background: var(--byc-bg-light);
  border-bottom: 1px solid var(--byc-border);
  vertical-align: middle;
}
.byc-compare thead th small {
  display: block;
  font-size: 11px; font-weight: 500;
  color: var(--byc-primary);
  margin-top: 4px;
}
.byc-compare thead th.byc-compare-featured {
  background: linear-gradient(180deg, rgba(43,109,232,0.12), rgba(91,141,239,0.06));
  color: var(--byc-primary);
  position: relative;
}
.byc-compare thead th.byc-compare-featured::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--byc-grad-primary);
}
.byc-compare thead th:first-child {
  text-align: left;
  position: sticky; left: 0; z-index: 2;
  background: #fff;
  border-right: 1px solid var(--byc-border);
}
.byc-compare tbody td {
  padding: 14px 16px;
  text-align: center;
  font-size: 13px;
  color: var(--byc-text-sec);
  border-bottom: 1px solid var(--byc-border);
}
.byc-compare tbody tr:last-child td { border-bottom: 0; }
.byc-compare tbody tr:hover td { background: rgba(43,109,232,0.02); }
.byc-compare tbody td.byc-compare-featured {
  background: rgba(43,109,232,0.04);
  font-weight: 500;
  color: var(--byc-text);
}
.byc-compare tbody tr:hover td.byc-compare-featured { background: rgba(43,109,232,0.08); }
.byc-compare-row {
  text-align: left !important;
  font-weight: 500;
  color: var(--byc-text) !important;
  background: var(--byc-bg-light);
  position: sticky; left: 0; z-index: 1;
  border-right: 1px solid var(--byc-border);
  white-space: nowrap;
}
.byc-compare-yes { color: var(--byc-green); }
.byc-compare-mid { color: var(--byc-accent); }
.byc-compare-no  { color: var(--byc-text-mut); }

@media (max-width: 767px) {
  .byc-compare-wrapper { position: relative; }
  .byc-compare-wrapper::after {
    content: '← 滑动查看更多 →';
    display: block;
    text-align: center;
    padding: 8px;
    font-size: 12px;
    color: var(--byc-text-mut);
    background: var(--byc-bg-light);
    border-top: 1px solid var(--byc-border);
  }
}


/* =====================================================
   购买流程 steps (购买流程 4 step)
   ===================================================== */
.byc-steps {
  display: grid; gap: 24px; grid-template-columns: 1fr;
  list-style: none; padding: 0; margin: 0;
  counter-reset: byc-step;
}
@media (min-width: 640px)  { .byc-steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-steps { grid-template-columns: repeat(4, 1fr); gap: 32px; } }

.byc-step {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 28px 24px;
  position: relative;
  transition: var(--byc-trans);
  text-align: center;
}
.byc-step:hover {
  border-color: var(--byc-primary-100);
  box-shadow: var(--byc-sd-md);
  transform: translateY(-4px);
}
/* 桌面上 step 之间用箭头连接 */
@media (min-width: 1024px) {
  .byc-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -28px;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border-top: 2px solid var(--byc-primary-100);
    border-right: 2px solid var(--byc-primary-100);
    transform: translateY(-50%) rotate(45deg);
    z-index: 1;
  }
}

.byc-step-num {
  display: block;
  font-size: 32px; font-weight: 700;
  background: var(--byc-grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
  line-height: 1;
}
.byc-step-ico {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--byc-r-lg);
  background: var(--byc-primary-50);
  color: var(--byc-primary);
}
.byc-step-ico svg { width: 28px; height: 28px; }
.byc-step:hover .byc-step-ico { background: var(--byc-grad-primary); color: #fff; }
.byc-step-title {
  font-size: 17px; font-weight: 600;
  color: var(--byc-text);
  margin: 0 0 8px;
}
.byc-step-desc {
  font-size: 13px;
  color: var(--byc-text-sec);
  line-height: 1.6;
  margin: 0;
}

/* =====================================================
   兼容旧 host/db/buy 子页 (保留原有类名, 不动 controller)
   ===================================================== */
.hero-banner { position: relative; background: var(--byc-grad-primary); color: #fff; padding: 80px 0; text-align: center; overflow: hidden; }
.hero-banner-slide { display: none; }
.hero-banner-slide.is-active { display: block; }
.hero-banner-mask { display: none; }
.hero-banner-inner { max-width: 900px; margin: 0 auto; padding: 0 16px; }
.hero-banner-title { font-size: clamp(28px, 4vw, 40px); font-weight: 700; margin-bottom: 12px; }
.hero-banner-sub { font-size: 17px; opacity: 0.9; margin-bottom: 24px; }
.hero-banner-cta { display: flex; gap: 12px; justify-content: center; }
.hero-banner-dots { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.hero-banner-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; }
.hero-banner-dot.is-active { background: #fff; }

/* 子页 product/news 兼容 */
.byc-section { padding: 64px 0; }
.byc-section-head { text-align: center; margin-bottom: 40px; }
.byc-section-head h2 { font-size: 28px; font-weight: 700; color: var(--byc-text); margin-bottom: 8px; }
.byc-section-head p { font-size: 15px; color: var(--byc-text-sec); }
.byc-section-more { float: right; font-size: 14px; color: var(--byc-primary); }

.cps-banner { background: linear-gradient(135deg, #2B6DE8, #6366F1); color: #fff; padding: 32px 0; }
.cps-banner-inner { max-width: 1200px; margin: 0 auto; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cps-banner-left h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.cps-banner-left p { font-size: 14px; opacity: 0.85; }
.cps-banner-btn { padding: 10px 24px; background: #fff; color: var(--byc-primary); border-radius: 8px; font-weight: 600; }

.sla-stats-row, .byc-solutions, .trust-section { padding: 56px 0; }
.sla-stats-inner, .byc-solution-grid, .trust-grid, .news-cols, .cert-wall { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.byc-solution-card, .trust-card, .news-col { flex: 1 1 220px; background: #fff; border: 1px solid var(--byc-border); border-radius: 12px; padding: 24px; text-align: center; }
.byc-solution-card h3, .trust-card h3 { font-size: 17px; color: var(--byc-text); margin-bottom: 8px; }
.byc-solution-card p, .trust-card p { font-size: 13px; color: var(--byc-text-sec); }
.cert-logo { background: var(--byc-bg-light); border: 1px solid var(--byc-border); border-radius: 8px; padding: 12px 24px; font-size: 14px; color: var(--byc-text-sec); }
.sla-stat strong { display: block; font-size: 36px; color: var(--byc-primary); font-weight: 800; }
.sla-stat .sla-label { display: block; font-size: 14px; color: var(--byc-text); }
.sla-stat .sla-sub { display: block; font-size: 12px; color: var(--byc-text-mut); }

/* Domain search 兼容子页 */
.domain-search { padding: 48px 0; background: #fff; }
.domain-search-inner { max-width: 880px; margin: 0 auto; text-align: center; padding: 0 16px; }
.domain-search-title { font-size: 22px; font-weight: 700; color: var(--byc-text); margin-bottom: 20px; }
.domain-search-bar { display: flex; border: 1px solid var(--byc-border); border-radius: 10px; overflow: hidden; }
.domain-search-input { flex: 1; height: 52px; padding: 0 16px; border: none; outline: none; font-size: 15px; }
.domain-search-tld { width: 96px; border: none; border-left: 1px solid var(--byc-border); padding: 0 12px; font-size: 15px; }
.domain-search-btn { width: 120px; background: var(--byc-grad-primary); color: #fff; font-weight: 600; }
.domain-search-tabs { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 16px; }
.domain-search-tab { padding: 6px 14px; background: var(--byc-bg-light); border-radius: var(--byc-r-full); font-size: 13px; color: var(--byc-text-sec); }
.domain-search-tab.is-active, .domain-search-tab:hover { background: var(--byc-primary); color: #fff; }

/* byc-product-grid 兼容旧 host/db 列表页 */
.byc-product-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.byc-product-card { background: #fff; border: 1px solid var(--byc-border); border-radius: 12px; padding: 20px; transition: var(--byc-trans); display: block; }
.byc-product-card:hover { transform: translateY(-4px); box-shadow: var(--byc-sd-md); border-color: var(--byc-primary); }
.byc-product-card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.byc-product-card-name { font-size: 16px; font-weight: 600; color: var(--byc-text); }
.byc-product-card-desc { font-size: 13px; color: var(--byc-text-sec); margin-bottom: 16px; }
.byc-product-card-price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 16px; }
.byc-price-label { font-size: 12px; color: var(--byc-text-mut); }
.byc-price-num { font-size: 24px; font-weight: 700; color: var(--byc-accent); }
.byc-price-unit { font-size: 12px; color: var(--byc-text-mut); }
.byc-product-card-cta { font-size: 14px; color: var(--byc-primary); font-weight: 600; }


/* =====================================================
   子页 Hero (单 slide, 类 home hero 但简化)
   ===================================================== */
.byc-phero { position: relative; overflow: hidden; margin-top: -70px; padding-top: 70px; }
.byc-phero-bg {
  position: absolute; inset: 0; z-index: 0;
  /* 浅蓝主题 (与首页 .byc-hero-new 统一, 清爽 UCloud 风) */
  background: linear-gradient(180deg, #EAF0FE 0%, #F5F7FE 60%, #fff 100%);
}
.byc-phero-bg::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(43,109,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43,109,232,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}
/* 撤 6 个 data-theme (purple/green/cyan/orange/red/pink) 子主题,
   全 byc-www 产品页 hero 统一首页 UCloud 浅蓝, 不再按产品色区分 */
.byc-phero-inner {
  position: relative; z-index: 2;
  display: grid; gap: 32px;
  padding: 56px 0 60px;
  grid-template-columns: 1fr;
}
@media (min-width: 1024px) {
  .byc-phero-inner { grid-template-columns: 1.1fr 0.9fr; align-items: center; padding: 72px 0 80px; }
}
.byc-phero-left { max-width: 600px; }
.byc-phero-crumb { font-size: 13px; color: var(--byc-text-mut); margin-bottom: 18px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.byc-phero-crumb a { color: var(--byc-text-mut); }
.byc-phero-crumb a:hover { color: var(--byc-primary); }
.byc-phero-crumb span.byc-phero-crumb-sep { color: var(--byc-border-strong); }
.byc-phero-badge {
  display: inline-block; padding: 6px 14px;
  background: var(--byc-primary); color: #fff;
  font-size: 13px; font-weight: 600; border-radius: 4px; margin-bottom: 18px;
}
.byc-phero-title { font-size: 34px; font-weight: 700; color: var(--byc-text); line-height: 1.25; margin-bottom: 14px; }
@media (min-width: 768px) { .byc-phero-title { font-size: 42px; } }
@media (min-width: 1280px) { .byc-phero-title { font-size: 50px; } }
.byc-phero-desc { font-size: 15px; color: var(--byc-text-sec); line-height: 1.8; margin-bottom: 24px; }
@media (min-width: 768px) { .byc-phero-desc { font-size: 16px; } }
.byc-phero-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.byc-phero-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(43,109,232,0.18);
  border-radius: var(--byc-r-full);
  font-size: 13px; font-weight: 500;
  color: var(--byc-primary);
  backdrop-filter: blur(6px);
}
.byc-phero-chip::before { content: '✓'; font-weight: 700; }
.byc-phero-price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 26px; }
.byc-phero-price-label { font-size: 14px; color: var(--byc-text-mut); }
.byc-phero-price-value { font-size: 44px; font-weight: 800; color: var(--byc-accent); line-height: 1; }
@media (min-width: 768px) { .byc-phero-price-value { font-size: 56px; } }
.byc-phero-price-unit { font-size: 14px; color: var(--byc-text-mut); }
.byc-phero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.byc-phero-cta .byc-btn-pri {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  background: var(--byc-grad-primary); color: #fff;
  font-size: 15px; font-weight: 600; border-radius: 8px;
  box-shadow: 0 4px 15px rgba(43,109,232,0.3);
  transition: all 0.3s ease;
}
.byc-phero-cta .byc-btn-pri:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(43,109,232,0.4); color: #fff; }
.byc-phero-cta .byc-btn-out {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px;
  background: rgba(255,255,255,0.7);
  color: var(--byc-primary);
  border: 1px solid rgba(43,109,232,0.25);
  font-size: 15px; font-weight: 600; border-radius: 8px;
  transition: all 0.3s ease;
}
.byc-phero-cta .byc-btn-out:hover { background: var(--byc-primary); color: #fff; transform: translateY(-2px); }

.byc-phero-art { position: relative; max-width: 480px; margin: 0 auto; }
.byc-phero-art svg { width: 100%; height: auto; animation: bycFloatSvg 5s ease-in-out infinite; }

/* 面包屑 + 热销推荐 badge 不显示 (用户要求, 全产品页统一), Hero 更紧凑 */
.byc-phero-crumb, .byc-phero-badge { display: none; }

/* host Hero 精致重排: 带图标特性行 + 价格与按钮同行 */
.byc-phero-feats { display: flex; flex-wrap: wrap; gap: 22px; margin-bottom: 30px; }
.byc-phero-feat { display: inline-flex; align-items: center; gap: 9px; font-size: 14.5px; font-weight: 600; color: var(--byc-text); }
.byc-phero-feat svg { width: 18px; height: 18px; flex-shrink: 0; padding: 7px; background: var(--byc-primary-50); color: var(--byc-primary); border-radius: 9px; box-sizing: content-box; }
.byc-phero-buy { display: flex; align-items: center; gap: 30px; flex-wrap: wrap; }
.byc-phero-buy .byc-phero-price { margin: 0; align-items: baseline; }
.byc-phero-buy .byc-price-num { font-size: 34px; font-weight: 800; color: var(--byc-accent); }

/* =====================================================
   子页 3 套餐价格卡 / 6 features / 适用场景 / FAQ
   ===================================================== */
.byc-plans { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 768px)  { .byc-plans { grid-template-columns: repeat(3, 1fr); } }
.byc-plan {
  position: relative;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 32px 28px;
  transition: var(--byc-trans);
  text-align: center;
  display: flex; flex-direction: column;
}
.byc-plan:hover { transform: translateY(-6px); box-shadow: var(--byc-sd-lg); border-color: var(--byc-primary-100); }
.byc-plan.is-hot { border-color: var(--byc-primary); box-shadow: var(--byc-sd-pri); background: linear-gradient(180deg, var(--byc-primary-50) 0%, #fff 100%); }
.byc-plan.is-hot::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--byc-grad-primary);
  border-radius: var(--byc-r-xl) var(--byc-r-xl) 0 0;
}
.byc-plan-tag {
  position: absolute; top: 14px; right: 14px;
  padding: 4px 12px;
  background: var(--byc-grad-accent); color: #fff;
  font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
  border-radius: 4px;
}
.byc-plan-name { font-size: 18px; font-weight: 600; color: var(--byc-text); margin-bottom: 12px; }
.byc-plan-price { display: flex; align-items: baseline; justify-content: center; gap: 4px; margin-bottom: 6px; }
.byc-plan-price-cur { font-size: 16px; font-weight: 600; color: var(--byc-accent); }
.byc-plan-price-num { font-size: 42px; font-weight: 800; color: var(--byc-accent); line-height: 1; }
.byc-plan-price-unit { font-size: 13px; color: var(--byc-text-mut); }
.byc-plan-sub { font-size: 12px; color: var(--byc-text-mut); margin-bottom: 24px; }
.byc-plan-feats { flex: 1; margin: 0 0 24px; padding: 0; list-style: none; text-align: left; }
.byc-plan-feats li {
  padding: 10px 0;
  font-size: 14px; color: var(--byc-text-sec);
  border-bottom: 1px dashed var(--byc-border);
  display: flex; align-items: center; gap: 8px;
}
.byc-plan-feats li:last-child { border-bottom: none; }
.byc-plan-feats li::before {
  content: ''; width: 16px; height: 16px; flex-shrink: 0;
  background: var(--byc-primary-50) url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 8l3 3 6-6' stroke='%232B6DE8' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") center/12px no-repeat;
  border-radius: 50%;
}
.byc-plan-btn {
  display: block;
  padding: 12px 24px;
  font-size: 14px; font-weight: 600;
  border-radius: var(--byc-r-md);
  text-align: center;
  transition: var(--byc-trans);
  color: var(--byc-primary);
  background: var(--byc-primary-50);
}
.byc-plan-btn:hover { color: #fff; background: var(--byc-grad-primary); }
.byc-plan.is-hot .byc-plan-btn { color: #fff; background: var(--byc-grad-primary); box-shadow: 0 4px 12px rgba(43,109,232,0.25); }
.byc-plan.is-hot .byc-plan-btn:hover { box-shadow: 0 8px 20px rgba(43,109,232,0.4); }

/* 6 features grid (类 home byc-feats 但 3 列) */
.byc-feats-3 { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .byc-feats-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-feats-3 { grid-template-columns: repeat(3, 1fr); } }

/* 使用场景卡 */
.byc-scenes { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .byc-scenes { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-scenes { grid-template-columns: repeat(4, 1fr); } }
.byc-scene {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 28px 24px;
  text-align: center;
  transition: var(--byc-trans);
}
.byc-scene:hover { transform: translateY(-4px); box-shadow: var(--byc-sd-md); border-color: var(--byc-primary-100); }
.byc-scene-ico {
  width: 56px; height: 56px;
  border-radius: var(--byc-r-lg);
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
}
.byc-scene-ico svg { width: 28px; height: 28px; color: #fff; }
.byc-scene h3 { font-size: 17px; font-weight: 600; color: var(--byc-text); margin-bottom: 8px; }
.byc-scene p { font-size: 13px; color: var(--byc-text-sec); line-height: 1.7; }

/* FAQ 折叠 */
.byc-faq { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.byc-faq details {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-lg);
  overflow: hidden;
  transition: var(--byc-trans);
}
.byc-faq details:hover { border-color: var(--byc-primary-100); box-shadow: var(--byc-sd-sm); }
.byc-faq details[open] { border-color: var(--byc-primary-100); box-shadow: var(--byc-sd-md); }
.byc-faq summary {
  list-style: none;
  padding: 18px 24px;
  font-size: 15px; font-weight: 600; color: var(--byc-text);
  cursor: pointer;
  position: relative;
  padding-right: 56px;
  transition: var(--byc-trans);
}
.byc-faq summary::-webkit-details-marker { display: none; }
.byc-faq summary::after {
  content: ''; position: absolute; right: 22px; top: 50%;
  width: 12px; height: 12px;
  border-right: 2px solid var(--byc-primary);
  border-bottom: 2px solid var(--byc-primary);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.3s ease;
}
.byc-faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.byc-faq details[open] summary { color: var(--byc-primary); }
.byc-faq-body, .byc-faq details > p { padding: 0 24px 22px; font-size: 14px; color: var(--byc-text-sec); line-height: 1.8; margin: 0; }

/* 步骤 timeline (域名注册 / ICP 备案) */
.byc-steps { display: grid; gap: 20px; grid-template-columns: 1fr; max-width: 1100px; margin: 0 auto; }
@media (min-width: 768px)  { .byc-steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-steps { grid-template-columns: repeat(5, 1fr); position: relative; } }
@media (min-width: 1024px) {
  .byc-steps::before {
    content: ''; position: absolute; top: 32px; left: 10%; right: 10%; height: 2px;
    background: repeating-linear-gradient(to right, var(--byc-primary-100) 0 8px, transparent 8px 16px);
    z-index: 0;
  }
}
.byc-step { position: relative; z-index: 1; text-align: center; padding: 0 8px; }
.byc-step-no {
  width: 64px; height: 64px; margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--byc-grad-primary);
  color: #fff;
  font-size: 24px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--byc-sd-pri);
}
.byc-step h3 { font-size: 16px; font-weight: 600; color: var(--byc-text); margin-bottom: 8px; }
.byc-step p { font-size: 13px; color: var(--byc-text-sec); line-height: 1.7; }

/* TLD 域名后缀卡 (8 列) */
.byc-tlds { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .byc-tlds { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-tlds { grid-template-columns: repeat(4, 1fr); } }
.byc-tld {
  position: relative;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-lg);
  padding: 24px 20px;
  text-align: center;
  transition: var(--byc-trans);
}
.byc-tld:hover { transform: translateY(-4px); box-shadow: var(--byc-sd-md); border-color: var(--byc-primary-100); }
.byc-tld.is-hot { border-color: var(--byc-accent); }
.byc-tld.is-hot::before {
  content: 'HOT'; position: absolute; top: -8px; right: 14px;
  padding: 2px 10px;
  background: var(--byc-grad-accent); color: #fff;
  font-size: 11px; font-weight: 700; border-radius: 4px;
}
.byc-tld-name { font-size: 28px; font-weight: 700; color: var(--byc-primary); margin-bottom: 12px; }
.byc-tld-price { display: flex; justify-content: center; align-items: baseline; gap: 4px; margin-bottom: 6px; }
.byc-tld-price-num { font-size: 24px; font-weight: 700; color: var(--byc-accent); }
.byc-tld-price-unit { font-size: 12px; color: var(--byc-text-mut); }
.byc-tld-renew { font-size: 12px; color: var(--byc-text-mut); margin-bottom: 14px; }
.byc-tld-desc { font-size: 12px; color: var(--byc-text-sec); margin-bottom: 16px; min-height: 32px; line-height: 1.5; }
.byc-tld-btn {
  display: block;
  padding: 8px 16px;
  border-radius: var(--byc-r-md);
  font-size: 13px; font-weight: 600;
  color: var(--byc-primary);
  background: var(--byc-primary-50);
  transition: var(--byc-trans);
}
.byc-tld-btn:hover { color: #fff; background: var(--byc-grad-primary); }

/* Whois 结果框 */
.byc-result-box {
  max-width: 880px; margin: 0 auto;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 32px;
  box-shadow: var(--byc-sd-sm);
}
.byc-result-row { display: flex; gap: 16px; padding: 14px 0; border-bottom: 1px dashed var(--byc-border); font-size: 14px; }
.byc-result-row:last-child { border-bottom: none; }
.byc-result-key { flex: 0 0 140px; color: var(--byc-text-mut); }
.byc-result-val { flex: 1; color: var(--byc-text); font-weight: 500; word-break: break-all; }
.byc-result-badge { display: inline-block; padding: 3px 10px; border-radius: var(--byc-r-full); font-size: 12px; font-weight: 600; }
.byc-result-badge.is-ok { background: rgba(16,185,129,0.12); color: var(--byc-green); }
.byc-result-badge.is-warn { background: rgba(251,146,60,0.12); color: var(--byc-accent); }

/* 活动倒计时 */
.byc-countdown {
  display: flex; gap: 12px; justify-content: center; align-items: stretch;
  margin: 28px 0;
}
.byc-cd-box {
  min-width: 78px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(43,109,232,0.20);
  border-radius: var(--byc-r-lg);
  text-align: center;
  backdrop-filter: blur(8px);
}
.byc-cd-num { display: block; font-size: 28px; font-weight: 800; color: var(--byc-accent); line-height: 1.1; }
.byc-cd-lbl { display: block; font-size: 12px; color: var(--byc-text-mut); margin-top: 4px; }

/* 活动卡 (与 host-card 不同, 显原价划线) */
.byc-acts { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .byc-acts { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-acts { grid-template-columns: repeat(4, 1fr); } }
.byc-act-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 28px 24px;
  transition: var(--byc-trans);
  text-align: center;
}
.byc-act-card:hover { transform: translateY(-6px); box-shadow: var(--byc-sd-lg); border-color: var(--byc-primary-100); }
.byc-act-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--byc-grad-accent);
  border-radius: var(--byc-r-xl) var(--byc-r-xl) 0 0;
}
.byc-act-tag {
  position: absolute; top: 12px; right: 12px;
  padding: 3px 10px;
  background: var(--byc-grad-accent); color: #fff;
  font-size: 11px; font-weight: 700; border-radius: 4px;
}
.byc-act-name { font-size: 17px; font-weight: 600; color: var(--byc-text); margin: 8px 0 14px; }
.byc-act-price { font-size: 32px; font-weight: 800; color: var(--byc-accent); line-height: 1; }
.byc-act-orig { display: block; font-size: 13px; color: var(--byc-text-mut); text-decoration: line-through; margin: 6px 0 18px; }
.byc-act-btn {
  display: inline-block; padding: 10px 24px;
  background: var(--byc-grad-primary); color: #fff;
  font-size: 14px; font-weight: 600; border-radius: var(--byc-r-md);
  transition: var(--byc-trans);
}
.byc-act-btn:hover { transform: translateY(-2px); box-shadow: var(--byc-sd-pri); color: #fff; }

/* Buy 页 timeline 3 步 */
.byc-buysteps { display: grid; gap: 20px; grid-template-columns: 1fr; max-width: 980px; margin: 0 auto; }
@media (min-width: 768px) { .byc-buysteps { grid-template-columns: repeat(3, 1fr); } }
.byc-buystep {
  position: relative;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 28px 24px;
  transition: var(--byc-trans);
}
.byc-buystep:hover { transform: translateY(-4px); box-shadow: var(--byc-sd-md); border-color: var(--byc-primary-100); }
.byc-buystep-no {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--byc-grad-primary);
  color: #fff;
  font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  box-shadow: var(--byc-sd-pri);
}
.byc-buystep h3 { font-size: 17px; font-weight: 600; color: var(--byc-text); margin-bottom: 8px; }
.byc-buystep p { font-size: 13px; color: var(--byc-text-sec); line-height: 1.7; }

/* Linux 套餐卡 (host/linux) */
.byc-host-cards { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .byc-host-cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-host-cards { grid-template-columns: repeat(3, 1fr); } }
.byc-host-card {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  padding: 28px 24px;
  transition: var(--byc-trans);
}
.byc-host-card:hover { transform: translateY(-4px); box-shadow: var(--byc-sd-md); border-color: var(--byc-primary-100); }
.byc-host-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 8px; }
.byc-host-card-head h3 { font-size: 18px; font-weight: 600; color: var(--byc-text); }
.byc-host-card-line { font-size: 11px; padding: 2px 8px; background: var(--byc-primary-50); color: var(--byc-primary); border-radius: var(--byc-r-sm); }
.byc-host-card-specs { list-style: none; padding: 0; margin: 0 0 18px; border: 1px solid var(--byc-border); border-radius: var(--byc-r-md); }
.byc-host-card-specs li { display: flex; justify-content: space-between; padding: 8px 14px; border-bottom: 1px dashed var(--byc-border); font-size: 13px; }
.byc-host-card-specs li:last-child { border-bottom: none; }
.byc-host-card-specs li span { color: var(--byc-text-mut); }
.byc-host-card-specs li strong { color: var(--byc-text); font-weight: 600; }
.byc-host-card-price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 16px; padding: 12px 0; border-top: 1px solid var(--byc-border); }
.byc-host-card-price .byc-host-cur { font-size: 14px; color: var(--byc-accent); font-weight: 600; }
.byc-host-card-price .byc-host-num { font-size: 28px; color: var(--byc-accent); font-weight: 800; line-height: 1; }
.byc-host-card-price .byc-host-unit { font-size: 12px; color: var(--byc-text-mut); }
.byc-host-card-actions { display: flex; gap: 10px; }
.byc-host-card-actions a { flex: 1; padding: 10px 12px; text-align: center; font-size: 13px; font-weight: 600; border-radius: var(--byc-r-md); transition: var(--byc-trans); }
.byc-host-card-actions a.byc-host-btn-pri { color: #fff; background: var(--byc-grad-primary); }
.byc-host-card-actions a.byc-host-btn-pri:hover { transform: translateY(-2px); box-shadow: var(--byc-sd-pri); color: #fff; }
.byc-host-card-actions a.byc-host-btn-out { color: var(--byc-primary); background: var(--byc-primary-50); }
.byc-host-card-actions a.byc-host-btn-out:hover { color: #fff; background: var(--byc-primary); }



/* ============================================================
   虚拟主机购买页 (host/buy.html)
   ============================================================ */
.byc-buy-head {
  position: relative;
  padding: 90px 0 36px;
  background: linear-gradient(180deg, #EAF0FE 0%, #F5F7FE 60%, #fff 100%);
  color: #1A1F36;
  overflow: hidden;
  margin-top: -70px;
  padding-top: 130px;
}
/* 全 byc-www hero 统一浅蓝, ssl/host/server/db 等子主题撤 */
.byc-buy-head-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(43,109,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43,109,232,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}
.byc-buy-head .byc-phero-crumb { color: #5A6178; margin-bottom: 16px; }
.byc-buy-head .byc-phero-crumb a { color: #5A6178; }
.byc-buy-head .byc-phero-crumb a:hover { color: #2B6DE8; text-decoration: underline; }
.byc-buy-head .byc-phero-crumb-sep { color: #8C92A4; }
.byc-buy-head-row {
  position: relative; z-index: 2;
  display: flex; align-items: center; gap: 16px;
}
.byc-buy-head-icon {
  width: 56px; height: 56px;
  background: rgba(43,109,232,0.10);
  border: 1px solid rgba(43,109,232,0.20);
  border-radius: var(--byc-r-lg);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: #2B6DE8;
}
.byc-buy-head-icon svg { width: 28px; height: 28px; }
.byc-buy-head-title { font-size: 26px; font-weight: 700; margin: 0; line-height: 1.3; color: #1A1F36; }
.byc-buy-head-sub   { font-size: 14px; color: #5A6178; margin: 4px 0 0; }

/* 双列布局 */
.byc-buy-layout {
  display: grid; gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 1024px) {
  .byc-buy-layout { grid-template-columns: 1fr 340px; align-items: start; }
}
.byc-buy-main { display: flex; flex-direction: column; gap: 20px; }

/* 主列卡片 */
.byc-buy-card {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  overflow: hidden;
}
.byc-buy-card-head {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--byc-border);
  background: #fff;
}
.byc-buy-card-head svg { width: 20px; height: 20px; color: var(--byc-primary); flex-shrink: 0; }
.byc-buy-card-head h3 { font-size: 16px; font-weight: 600; color: var(--byc-text); margin: 0; }
.byc-buy-card-body { padding: 22px 24px; }

/* 产品配置 8 项 */
.byc-config-grid {
  display: grid; gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px)  { .byc-config-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px)  { .byc-config-grid { grid-template-columns: repeat(4, 1fr); } }
.byc-config-item {
  display: flex; flex-direction: column;
  padding: 12px 14px;
  background: var(--byc-bg-light);
  border-radius: var(--byc-r-md);
}
.byc-config-label { font-size: 12px; color: var(--byc-text-mut); margin-bottom: 4px; }
.byc-config-value { font-size: 14px; font-weight: 600; color: var(--byc-text); }

/* 业务信息表单 */
.byc-buy-field { margin-bottom: 16px; }
.byc-buy-field:last-child { margin-bottom: 0; }
.byc-buy-field label { display: block; font-size: 13px; color: var(--byc-text-sec); margin-bottom: 6px; font-weight: 500; }
.byc-buy-field input {
  width: 100%; height: 44px;
  padding: 0 14px;
  font-size: 14px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-md);
  background: #fff;
  color: var(--byc-text);
  font-family: inherit;
  transition: var(--byc-trans);
  outline: 0;
}
.byc-buy-field input:focus { border-color: var(--byc-primary); box-shadow: 0 0 0 3px rgba(43,109,232,0.12); }
.byc-buy-tip { margin: 6px 0 0; font-size: 12px; color: var(--byc-text-mut); }

/* 购买时长卡片 */
.byc-period-grid {
  display: grid; gap: 12px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px)  { .byc-period-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px)  { .byc-period-grid { grid-template-columns: repeat(3, 1fr); } }
.byc-period {
  position: relative;
  display: flex; flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-md);
  cursor: pointer;
  transition: var(--byc-trans);
}
.byc-period input[type="radio"] { display: none; }
.byc-period:hover { border-color: var(--byc-primary-100); transform: translateY(-2px); box-shadow: var(--byc-sd-sm); }
.byc-period.is-active {
  border-color: var(--byc-primary);
  background: var(--byc-primary-50);
  box-shadow: 0 0 0 3px rgba(43,109,232,0.10);
}
.byc-period.is-active .byc-period-name  { color: var(--byc-primary); }
.byc-period.is-active .byc-period-price { color: var(--byc-accent); }
.byc-period-name  { font-size: 14px; font-weight: 600; color: var(--byc-text); }
.byc-period-price { font-size: 20px; font-weight: 700; color: var(--byc-accent); }
.byc-period-unit  { font-size: 12px; color: var(--byc-text-mut); }
.byc-period-tag {
  position: absolute; top: -8px; right: 10px;
  padding: 2px 8px;
  background: var(--byc-grad-accent);
  color: #fff;
  font-size: 11px; font-weight: 700;
  border-radius: var(--byc-r-sm);
}
.byc-period--hot { border-color: var(--byc-accent); }

/* 右侧汇总 */
.byc-buy-side { position: relative; }
@media (min-width: 1024px) {
  .byc-buy-side { position: sticky; top: 100px; }
}
.byc-buy-summary {
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  box-shadow: var(--byc-sd-md);
  padding: 20px 24px;
}
.byc-buy-summary-head {
  font-size: 16px; font-weight: 600; color: var(--byc-text);
  padding-bottom: 14px; margin-bottom: 14px;
  border-bottom: 1px solid var(--byc-border);
}
.byc-buy-summary-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0;
  font-size: 13px;
  color: var(--byc-text-sec);
}
.byc-buy-summary-row strong { color: var(--byc-text); font-weight: 500; }
.byc-buy-summary-row--discount { color: var(--byc-accent); }
.byc-buy-summary-total {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 14px 0 0;
  margin-top: 8px;
  border-top: 1px dashed var(--byc-border);
}
.byc-buy-summary-total span { font-size: 14px; color: var(--byc-text-sec); }
.byc-buy-summary-total strong { font-size: 26px; font-weight: 800; color: var(--byc-accent); line-height: 1; }
.byc-buy-balance {
  display: flex; justify-content: space-between;
  padding: 10px 14px;
  margin-top: 12px;
  background: var(--byc-bg-light);
  border-radius: var(--byc-r-md);
  font-size: 13px;
}
.byc-buy-balance.is-not-enough { background: #fff2f0; color: var(--byc-red); }
.byc-buy-balance strong { color: var(--byc-text); font-weight: 600; }
.byc-buy-balance.is-not-enough strong { color: var(--byc-red); }

.byc-buy-submit {
  width: 100%;
  height: 48px;
  margin-top: 18px;
  background: var(--byc-grad-primary);
  color: #fff;
  border: 0;
  border-radius: var(--byc-r-md);
  font-size: 16px; font-weight: 600;
  cursor: pointer;
  transition: var(--byc-trans);
  font-family: inherit;
}
.byc-buy-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(43,109,232,0.35);
}
.byc-buy-submit:disabled {
  opacity: 0.6; cursor: not-allowed; transform: none;
}

.byc-buy-agree {
  display: flex; align-items: center; gap: 6px;
  margin: 12px 0 0;
  font-size: 12px; color: var(--byc-text-mut);
}
.byc-buy-agree input { accent-color: var(--byc-primary); width: 14px; height: 14px; }
.byc-buy-agree a { color: var(--byc-primary); }

/* ============================================================
   ASP 范式套餐卡 .byc-pcard (host/index.html 列表)
   product-card 范式
   ============================================================ */
/* 套餐区不显示 section 标题块 (用户要求: 套餐选购 / 选择适合您的... / 共N款 都不用), 全产品页统一 */
#plans .byc-sec-head { display: none; }

.byc-pcard-grid {
  display: grid; gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px)  { .byc-pcard-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .byc-pcard-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .byc-pcard-grid { grid-template-columns: repeat(4, 1fr); } }

.byc-pcard {
  position: relative;
  background: #fff;
  border: 1px solid var(--byc-border);
  border-radius: 16px;
  padding: 28px 24px 24px;
  display: flex; flex-direction: column;
  transition: var(--byc-trans);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.byc-pcard::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--byc-grad-primary);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.byc-pcard:hover {
  border-color: var(--byc-primary-100);
  transform: translateY(-6px);
  box-shadow: var(--byc-sd-lg);
}
.byc-pcard:hover::before { transform: scaleX(1); }
.byc-pcard--hot {
  border-color: var(--byc-primary);
  box-shadow: 0 8px 30px rgba(43,109,232,0.14);
  background: linear-gradient(180deg, #EFF4FE 0%, #fff 30%);
}
.byc-pcard--hot::before { background: var(--byc-grad-primary); transform: scaleX(1); }

/* 角标 (热销) */
.byc-pcard-badge {
  position: absolute; top: 14px; right: -2px;
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 14px 4px 10px;
  background: var(--byc-grad-primary);
  color: #fff;
  font-size: 12px; font-weight: 700;
  border-radius: var(--byc-r-md) 0 0 var(--byc-r-md);
  box-shadow: 0 2px 6px rgba(43,109,232,0.30);
}
.byc-pcard-badge svg { width: 14px; height: 14px; }

/* 名称 + 线路 */
.byc-pcard-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--byc-text);
  margin: 0 0 6px;
  line-height: 1.3;
  padding-right: 60px;
}
.byc-pcard-line {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  background: var(--byc-primary-50);
  color: var(--byc-primary);
  border-radius: var(--byc-r-sm);
  margin-bottom: 18px;
}

/* 价格 (大字, product-price) */
.byc-pcard-price {
  display: flex; align-items: baseline;
  gap: 6px;
  padding: 14px 0;
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--byc-border);
}
.byc-pcard-price-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--byc-accent);
  line-height: 1;
  letter-spacing: -1px;
}
.byc-pcard-price-unit {
  font-size: 13px;
  color: var(--byc-text-mut);
}

/* 6 项规格列表 (product-specs) */
.byc-pcard-specs {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  flex: 1;
}
.byc-pcard-specs li {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0;
  font-size: 13px;
  border-bottom: 1px dashed var(--byc-border);
}
.byc-pcard-specs li:last-child { border-bottom: none; }
.byc-pcard-spec-icon {
  flex-shrink: 0;
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--byc-primary-50);
  color: var(--byc-primary);
  border-radius: var(--byc-r-md);
}
.byc-pcard-spec-icon svg { width: 16px; height: 16px; }
.byc-pcard--hot .byc-pcard-spec-icon {
  background: var(--byc-primary-50);
  color: var(--byc-primary);
}
.byc-pcard-spec-label {
  color: var(--byc-text-mut);
  flex-shrink: 0;
  min-width: 72px;
}
.byc-pcard-spec-value {
  color: var(--byc-text);
  font-weight: 600;
  flex: 1;
  text-align: right;
  word-break: break-word;
}

/* "立即购买" 按钮 (product-btn, 全宽橙色) */
.byc-pcard-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--byc-grad-primary);
  color: #fff;
  font-size: 14px; font-weight: 600;
  border-radius: var(--byc-r-md);
  transition: var(--byc-trans);
  box-shadow: 0 4px 12px rgba(43,109,232,0.20);
}
.byc-pcard-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(43,109,232,0.35);
  color: #fff;
}
.byc-pcard-btn svg { width: 16px; height: 16px; }
.byc-pcard--hot .byc-pcard-btn {
  background: var(--byc-grad-primary);
  box-shadow: 0 4px 12px rgba(43,109,232,0.30);
}
.byc-pcard--hot .byc-pcard-btn:hover {
  box-shadow: 0 8px 20px rgba(43,109,232,0.45);
}

/* ============================================================
   产品分类 tabs (host-category)
   ============================================================ */
.byc-cats-sec {
  padding: 24px 0;
  background: #fff;
  border-bottom: 1px solid var(--byc-border);
}
.byc-cats {
  display: flex; align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.byc-cat {
  display: inline-flex; align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 14px; font-weight: 500;
  color: var(--byc-text-sec);
  background: var(--byc-bg-light);
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-full);
  transition: var(--byc-trans);
  white-space: nowrap;
}
.byc-cat svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
}
.byc-cat:hover {
  color: var(--byc-primary);
  background: var(--byc-primary-50);
  border-color: var(--byc-primary-100);
}
.byc-cat.is-active {
  color: #fff;
  background: var(--byc-grad-primary);
  border-color: transparent;
  box-shadow: var(--byc-sd-pri);
}
.byc-cat.is-active:hover {
  color: #fff;
  transform: translateY(-1px);
}
@media (max-width: 640px) {
  .byc-cats { gap: 6px; }
  .byc-cat { padding: 8px 14px; font-size: 13px; }
}

/* === dn23 化: 套餐卡居中 + 两区规格 (无图标) === */
.byc-pcard { text-align: center; align-items: center; }
.byc-pcard-name { text-align: center; padding-right: 0; }
.byc-pcard-line { margin-left: auto; margin-right: auto; }
.byc-pcard-price { justify-content: center; border-bottom: none; padding: 8px 0 16px; }
.byc-pcard-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding: 14px 0; margin: 0; border-top: 1px solid var(--byc-border); }
.byc-pcard-specs--sub { border-bottom: 1px dashed var(--byc-border); margin-bottom: 4px; }
.byc-pcard-spec { display: flex; flex-direction: column; gap: 4px; align-items: center; }
.byc-pcard-spec b { font-size: 15px; font-weight: 700; color: var(--byc-text); }
.byc-pcard-spec span { font-size: 12px; color: var(--byc-text-mut); }
/* === 集中购买页: 套餐选择 (byc-pick / byc-plan-*) === */
.byc-buy-field--row { flex-direction: row; align-items: center; }
.byc-pick-group { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.byc-pick { display: inline-block; padding: 6px 16px; min-width: 72px; text-align: center; border: 1px solid var(--byc-border); border-radius: var(--byc-r-md); background: #fff; color: var(--byc-text-mut); font-size: 13px; cursor: pointer; user-select: none; transition: var(--byc-trans); }
.byc-pick:hover { border-color: var(--byc-primary); color: var(--byc-primary); }
.byc-pick.slt { border-color: var(--byc-primary); background: var(--byc-primary); color: #fff; }
.byc-plan-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; margin-top: 8px; width: 100%; }
.byc-plan-opt { display: flex; flex-direction: column; gap: 6px; padding: 14px 16px; border: 1px solid var(--byc-border); border-radius: var(--byc-r-lg); background: #fff; cursor: pointer; transition: var(--byc-trans); text-align: left; }
.byc-plan-opt:hover { border-color: var(--byc-primary); }
.byc-plan-opt.slt { border-color: var(--byc-primary); background: var(--byc-primary-50); box-shadow: 0 0 0 1px var(--byc-primary) inset; }
.byc-plan-opt-name { font-size: 14px; font-weight: 700; color: var(--byc-text); }
.byc-plan-opt-meta { font-size: 12px; color: var(--byc-text-mut); }
.byc-plan-opt-price { font-size: 18px; font-weight: 800; color: var(--byc-accent); }
.byc-plan-opt-price i { font-size: 12px; font-weight: 400; color: var(--byc-text-mut); font-style: normal; }
.byc-muted { color: var(--byc-text-mut); font-size: 13px; }

/* === 集中购买页 v2: 单列行式布局 + byc 浅蓝皮肤 (pill 配置 + 规格灰框 + 底部 sticky 结算条) === */
.byc-buy-single { display: flex; flex-direction: column; gap: 20px; padding-bottom: 92px; }
.byc-buy-single .byc-buy-field--row { display: flex; flex-direction: row; align-items: flex-start; }
.byc-buy-single .byc-buy-field--row > label { width: 72px; flex-shrink: 0; padding-top: 7px; font-size: 13px; color: var(--byc-text-mut); }
.byc-buy-field-ctrl { flex: 1; min-width: 0; }
.byc-buy-field-ctrl input { width: 100%; max-width: 440px; padding: 8px 12px; border: 1px solid var(--byc-border); border-radius: var(--byc-r-md); font-size: 14px; color: var(--byc-text); transition: var(--byc-trans); }
.byc-buy-field-ctrl input:focus { border-color: var(--byc-primary); outline: none; }
.byc-buy-field-ctrl .byc-buy-tip { margin: 6px 0 0; }

/* 规格预览灰框: 两列 key:value */
.byc-spec-box { margin-top: 4px; padding: 20px 24px; background: #fff; border: 1px solid var(--byc-border); border-radius: 6px; display: grid; grid-template-columns: 1fr; gap: 13px 40px; }
@media (min-width: 600px) { .byc-spec-box { grid-template-columns: 1fr 1fr; } }
.byc-spec-item { display: flex; align-items: center; gap: 10px; font-size: 13px; line-height: 1.4; }
.byc-spec-k { color: var(--byc-text-mut); min-width: 64px; }
.byc-spec-v { color: var(--byc-text); font-weight: 600; }

/* pill 长期优惠角标 (惠) */
.byc-pick { position: relative; }
.byc-pick-tag { position: absolute; top: -7px; right: -7px; padding: 0 5px; height: 15px; line-height: 15px; font-size: 10px; font-style: normal; color: #fff; background: var(--byc-accent); border-radius: 8px 8px 8px 0; }
.byc-pick.slt .byc-pick-tag { background: #fff; color: var(--byc-accent); }

/* 底部 sticky 结算条 */
.byc-buy-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; background: #fff; border-top: 1px solid var(--byc-border); box-shadow: 0 -4px 18px rgba(20,40,80,0.07); }
.byc-buy-bar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.byc-buy-bar-info { display: flex; align-items: baseline; gap: 22px; }
.byc-buy-bar-cost { display: flex; align-items: baseline; gap: 8px; }
.byc-buy-bar-cost-label { font-size: 14px; color: var(--byc-text-mut); }
.byc-buy-bar-cost-num { font-size: 26px; font-weight: 800; color: var(--byc-accent); line-height: 1; }
.byc-buy-bar-balance { font-size: 13px; color: var(--byc-text-mut); }
.byc-buy-bar-balance em { font-style: normal; font-weight: 600; color: var(--byc-text); }
.byc-buy-bar-balance.is-not-enough em { color: var(--byc-accent); }
.byc-buy-bar-action { display: flex; align-items: center; gap: 18px; }
.byc-buy-bar-agree { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--byc-text-mut); white-space: nowrap; }
.byc-buy-bar-agree a { color: var(--byc-primary); }
.byc-buy-bar-submit { padding: 0 44px; height: 44px; font-size: 16px; font-weight: 600; color: #fff; background: var(--byc-primary); border: none; border-radius: var(--byc-r-md); cursor: pointer; transition: var(--byc-trans); }
.byc-buy-bar-submit:hover { filter: brightness(0.94); }
.byc-buy-bar-submit:disabled { opacity: .6; cursor: not-allowed; }
@media (max-width: 700px) {
  .byc-buy-bar-inner { min-height: 0; flex-direction: column; align-items: stretch; gap: 10px; padding: 12px 0; }
  .byc-buy-bar-agree { display: none; }
  .byc-buy-bar-action { justify-content: space-between; }
  .byc-buy-bar-submit { flex: 1; }
}

/* === buy 页头 dn23 式 (返回 + 标题 + 步骤条) + 流式底部结算, byc 浅蓝皮肤 === */
.byc-bw-head { background: #fff; border-bottom: 1px solid var(--byc-border); padding-top: 18px; }
.byc-bw-head-bar { display: flex; align-items: center; gap: 16px; }
.byc-bw-back { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; color: var(--byc-text-mut); }
.byc-bw-back svg { width: 16px; height: 16px; }
.byc-bw-back:hover { color: var(--byc-primary); }
.byc-bw-title { font-size: 20px; font-weight: 700; color: var(--byc-text); margin: 0; }
.byc-bw-steps { display: flex; align-items: center; list-style: none; margin: 18px 0 0; padding: 0; flex-wrap: wrap; }
.byc-bw-step { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--byc-text-mut); padding-bottom: 16px; }
.byc-bw-step i { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; background: var(--byc-border); color: #fff; font-size: 12px; font-style: normal; font-weight: 600; }
.byc-bw-step.is-active { color: var(--byc-primary); font-weight: 600; }
.byc-bw-step.is-active i { background: var(--byc-primary); }
.byc-bw-step:not(:last-child)::after { content: ''; width: 56px; height: 1px; background: var(--byc-border); margin: 0 16px; }
@media (max-width: 700px) { .byc-bw-step:not(:last-child)::after { width: 16px; margin: 0 8px; } .byc-bw-step span { display: none; } }

/* buy 主体: 单列 */
.byc-bw-form { display: flex; flex-direction: column; gap: 20px; }
.byc-bw-form .byc-buy-field--row { display: flex; flex-direction: row; align-items: flex-start; }
.byc-bw-form .byc-buy-field--row > label { width: 72px; flex-shrink: 0; padding-top: 7px; font-size: 13px; color: var(--byc-text-mut); }

/* 底部结算: 流式白卡 (不悬浮) */
.byc-bw-foot-card .byc-bw-card-main { display: flex; align-items: center; }
.byc-bw-foot-card:hover { border-color: var(--byc-border); box-shadow: none; }
.byc-bw-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; }
.byc-bw-foot-left { display: flex; align-items: baseline; gap: 18px; }
.byc-bw-foot-label { font-size: 14px; color: var(--byc-text-mut); }
.byc-bw-foot-price { font-size: 26px; font-weight: 800; color: var(--byc-accent); line-height: 1; }
.byc-bw-foot-balance { font-size: 13px; color: var(--byc-text-mut); }
.byc-bw-foot-balance em { font-style: normal; font-weight: 600; color: var(--byc-text); }
.byc-bw-foot-balance.is-not-enough em { color: var(--byc-accent); }
.byc-bw-foot-right { display: flex; align-items: center; gap: 18px; }
.byc-bw-foot-agree { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--byc-text-mut); white-space: nowrap; }
.byc-bw-foot-agree a { color: var(--byc-primary); }
.byc-bw-foot-submit { padding: 0 44px; height: 44px; font-size: 16px; font-weight: 600; color: #fff; background: var(--byc-primary); border: none; border-radius: var(--byc-r-md); cursor: pointer; transition: var(--byc-trans); }
.byc-bw-foot-submit:hover { filter: brightness(0.94); }
.byc-bw-foot-submit:disabled { opacity: .6; cursor: not-allowed; }
@media (max-width: 700px) { .byc-bw-foot { flex-direction: column; align-items: stretch; gap: 12px; } .byc-bw-foot-agree { display: none; } .byc-bw-foot-submit { width: 100%; } }

/* buy 页 Hero: 纯 SVG 动画 (byc 浅蓝, 文案全去) — 整屏一体场景, 单列居中 */
.byc-phero--buy .byc-phero-inner { grid-template-columns: 1fr; padding: 20px 0 16px; }
@media (min-width: 1024px) { .byc-phero--buy .byc-phero-inner { grid-template-columns: 1fr; padding: 28px 0 22px; } }
.byc-bhero { width: 100%; }
.byc-bhero-svg { display: block; width: 100%; max-width: 940px; height: auto; margin: 0 auto; }
/* SVG 内元素 transform 以自身 bbox 中心为原点 (浮动/缩放/旋转正确) */
.byc-bhero-svg g, .byc-bhero-svg circle, .byc-bhero-svg path { transform-box: fill-box; transform-origin: center; }

/* 背景光晕脉冲 + 旋转虚线环 */
@keyframes bhHalo { 0%, 100% { transform: scale(1); opacity: .05; } 50% { transform: scale(1.07); opacity: .11; } }
@keyframes bhRing { to { transform: rotate(360deg); } }
.byc-bhero-svg .bh-halo { opacity: .07; animation: bhHalo 5s ease-in-out infinite; }
.byc-bhero-svg .bh-ring { animation: bhRing 28s linear infinite; }

/* 服务器 / 徽章 / 卡片 浮动 (不同相位) */
@keyframes bhFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.byc-bhero-svg .bh-server  { animation: bhFloat 4.5s ease-in-out infinite; }
.byc-bhero-svg .bh-badge   { animation: bhFloat 4.5s ease-in-out infinite .2s; }
.byc-bhero-svg .bh-float-a { animation: bhFloat 5.0s ease-in-out infinite .4s; }
.byc-bhero-svg .bh-float-b { animation: bhFloat 4.2s ease-in-out infinite .1s; }
.byc-bhero-svg .bh-float-c { animation: bhFloat 4.6s ease-in-out infinite .7s; }
.byc-bhero-svg .bh-float-d { animation: bhFloat 4.9s ease-in-out infinite 1.1s; }

/* 服务器状态灯闪烁 */
@keyframes bhBlink { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }
.byc-bhero-svg .bh-led-1 { animation: bhBlink 1.4s ease-in-out infinite; }
.byc-bhero-svg .bh-led-2 { animation: bhBlink 1.4s ease-in-out infinite .45s; }
.byc-bhero-svg .bh-led-3 { animation: bhBlink 1.4s ease-in-out infinite .9s; }

/* 开通对勾循环画出 */
@keyframes bhCheck { 0% { stroke-dashoffset: 34; } 28% { stroke-dashoffset: 0; } 88% { stroke-dashoffset: 0; } 100% { stroke-dashoffset: 34; } }
.byc-bhero-svg .bh-check { stroke-dasharray: 34; stroke-dashoffset: 34; animation: bhCheck 4s ease-in-out infinite; }

/* 连接线 dash 流动 + 数据流圆点 */
@keyframes bhDash { to { stroke-dashoffset: -18; } }
.byc-bhero-svg .bh-wire { animation: bhDash 1s linear infinite; }
@keyframes bhFlow { 0% { transform: translateX(0); opacity: 0; } 12% { opacity: 1; } 85% { opacity: 1; } 100% { transform: translateX(var(--bh-d, 150px)); opacity: 0; } }
.byc-bhero-svg .bh-flow-1 { --bh-d: 150px; animation: bhFlow 2.6s linear infinite; }
.byc-bhero-svg .bh-flow-2 { --bh-d: 148px; animation: bhFlow 2.6s linear infinite 1.3s; }

@media (prefers-reduced-motion: reduce) {
  .byc-bhero-svg .bh-halo, .byc-bhero-svg .bh-ring, .byc-bhero-svg .bh-server,
  .byc-bhero-svg .bh-badge, .byc-bhero-svg .bh-float-a, .byc-bhero-svg .bh-float-b,
  .byc-bhero-svg .bh-float-c, .byc-bhero-svg .bh-float-d, .byc-bhero-svg .bh-led-1,
  .byc-bhero-svg .bh-led-2, .byc-bhero-svg .bh-led-3, .byc-bhero-svg .bh-check,
  .byc-bhero-svg .bh-wire, .byc-bhero-svg .bh-flow-1, .byc-bhero-svg .bh-flow-2 { animation: none !important; }
  .byc-bhero-svg .bh-check { stroke-dashoffset: 0; }
}
.byc-phero--buy .byc-phero-art { max-width: 360px; }
/* buy 内容区全白 */
.byc-buy-sec { background: #fff; }

/* === buy 页融合三站丰富化: 左竖分区标签 + 已选汇总 + 橙点缀 (byc 浅蓝皮肤) === */
/* 卡片: 左竖标签条 (浅蓝层次) + 右内容 */
.byc-bw-card { display: flex; min-height: 88px; background: #fff; border: 1px solid var(--byc-border); border-radius: 8px; overflow: hidden; transition: box-shadow .25s ease, border-color .25s ease; }
.byc-bw-card:hover { border-color: var(--byc-primary); box-shadow: 0 6px 22px rgba(0,102,255,0.12); }
.byc-bw-card-side {
  flex-shrink: 0; width: 48px;
  display: flex; align-items: center; justify-content: center;
  padding: 16px 0; box-sizing: border-box;
  background: var(--byc-primary-50, #eef4ff);
  color: var(--byc-primary);
  border-right: 1px solid var(--byc-border);
}
.byc-bw-card-side > span { writing-mode: vertical-rl; letter-spacing: 3px; font-size: 14px; font-weight: 600; white-space: nowrap; }
.byc-bw-card-side--accent { background: var(--byc-primary); color: #fff; border-right-color: var(--byc-primary); }
.byc-bw-card-main { flex: 1; min-width: 0; padding: 22px 24px; }

/* 橙色推荐提示 */
.byc-bw-reco { margin: 14px 0 0; padding: 9px 14px; font-size: 13px; color: #C2651A; background: #FFF6EC; border: 1px solid #FFE2C2; border-radius: var(--byc-r-md); }

/* 当前已选配置汇总: key:value 网格 */
.byc-bw-summary { display: grid; grid-template-columns: 1fr; gap: 14px 32px; }
@media (min-width: 600px)  { .byc-bw-summary { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px)  { .byc-bw-summary { grid-template-columns: repeat(3, 1fr); } }
.byc-bw-sum-item { display: flex; align-items: baseline; gap: 8px; font-size: 13px; }
.byc-bw-sum-k { color: var(--byc-text-mut); min-width: 56px; }
.byc-bw-sum-v { color: var(--byc-text); font-weight: 600; }

/* 底部橙色优惠 */
.byc-bw-foot-save { font-size: 13px; color: var(--byc-text-mut); }
.byc-bw-foot-save em { font-style: normal; font-weight: 600; color: var(--byc-accent); }

@media (max-width: 560px) {
  .byc-bw-card-side { width: 40px; padding-top: 18px; gap: 8px; }
  .byc-bw-side-icon { width: 18px; height: 18px; }
  .byc-bw-card-side > span { letter-spacing: 2px; font-size: 13px; }
  .byc-bw-card-main { padding: 18px 16px; }
}

/* 业务标识/密码 + 随机按钮 */
.byc-bw-input-row { display: flex; gap: 8px; align-items: center; max-width: 440px; }
.byc-bw-input-row input { flex: 1; min-width: 0; max-width: none; }
.byc-bw-rand { flex-shrink: 0; padding: 0 16px; height: 38px; font-size: 13px; color: var(--byc-primary); background: var(--byc-primary-50, #eef4ff); border: 1px solid var(--byc-border); border-radius: var(--byc-r-md); cursor: pointer; white-space: nowrap; transition: var(--byc-trans); }
.byc-bw-rand:hover { background: var(--byc-primary); color: #fff; border-color: var(--byc-primary); }

/* 卡片滚动进入视口动画 (JS 加 anim-on 才启用; JS 失败则卡片正常显示) */
.byc-bw-form.anim-on .byc-bw-card { opacity: 0; transform: translateY(24px); transition: opacity .55s ease, transform .55s ease, box-shadow .25s ease, border-color .25s ease; }
.byc-bw-form.anim-on .byc-bw-card.is-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .byc-bw-form.anim-on .byc-bw-card { transform: none !important; transition: opacity .45s ease; } }