/* ========== Floating Sidebar ========== */
.sidebar-float {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-float .sb-item {
  width: 56px;
  height: 56px;
  background: #fff;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s;
  position: relative;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  writing-mode: vertical-rl;
  letter-spacing: 2px;
  border-radius: 0;
  box-shadow: var(--shadow-sm);
}
.sidebar-float .sb-item:first-child { border-radius: var(--radius-lg) 0 0 0; }
.sidebar-float .sb-item:last-child { border-radius: 0 0 0 var(--radius-lg); }
.sidebar-float .sb-item:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  width: 62px;
}
.sidebar-float .sb-item.sb-qr { writing-mode: horizontal-tb; flex-direction: column; gap: 4px; height: auto; padding: 10px 6px; }
.sidebar-float .sb-item.sb-phone-item { writing-mode: horizontal-tb; flex-direction: column; gap: 4px; height: auto; padding: 10px 6px; }
.sidebar-float .sb-item.sb-qr svg,
.sidebar-float .sb-item.sb-phone-item svg { width: 24px; height: 24px; }
.sidebar-float .sb-item.sb-qr span,
.sidebar-float .sb-item.sb-phone-item span { font-size: 11px; letter-spacing: 1px; }
.sidebar-float .sb-popup {
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 16px;
  display: none;
  white-space: nowrap;
  border: 1px solid var(--border);
  z-index: 1000;
  text-align: center;
}
.sidebar-float .sb-item:hover .sb-popup,
.sidebar-float .sb-item.is-peeking .sb-popup { display: block; }
.sidebar-float .sb-item.is-peeking {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  width: 62px;
}
.sidebar-float .sb-popup img { width: 160px; height: 160px; border-radius: var(--radius); object-fit: contain; }
.sidebar-float .sb-popup .qr-tip { font-size: 13px; color: var(--text); margin-top: 8px; font-weight: 600; writing-mode: horizontal-tb; letter-spacing: 0; }
.sidebar-float .sb-popup .qr-sub { font-size: 12px; color: var(--text-light); margin-top: 2px; }
.sidebar-float .sb-popup .qr-wechat-box {
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(37, 99, 235, 0.22);
  border-radius: 12px;
  background: linear-gradient(180deg, #eff6ff, #dbeafe);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.14);
  writing-mode: horizontal-tb;
  letter-spacing: 0;
}
.sidebar-float .sb-popup .qr-wechat-box label {
  display: block;
  font-size: 12px;
  line-height: 1.2;
  color: #64748b;
  font-weight: 700;
  letter-spacing: 0;
}
.sidebar-float .sb-popup .qr-wechat-value {
  display: block;
  width: 100%;
  margin-top: 5px;
  padding: 3px 2px;
  border: 0;
  outline: 0;
  background: transparent;
  color: #1d4ed8;
  font-family: inherit;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  letter-spacing: 2px;
  user-select: text;
  cursor: text;
}
.sidebar-float .sb-popup .qr-wechat-value:focus {
  background: rgba(255,255,255,0.7);
  border-radius: 6px;
}
.sidebar-float .sb-popup .qr-wechat-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 108px;
  min-height: 32px;
  margin-top: 8px;
  padding: 6px 12px;
  border: 0;
  border-radius: 999px;
  background: #2563eb;
  color: #fff;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.sidebar-float .sb-popup .qr-wechat-copy:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}
.sidebar-float .sb-popup .qr-wechat-box small {
  display: block;
  margin-top: 7px;
  color: #64748b;
  font-size: 11px;
  line-height: 1.35;
  white-space: normal;
}
.sidebar-float .sb-popup.phone-popup { padding: 16px 20px; }
.sidebar-float .sb-popup.phone-popup .phone-num { font-size: 18px; font-weight: 700; color: var(--primary); letter-spacing: 0; }
.sidebar-float .sb-popup.phone-popup .phone-label { font-size: 12px; color: var(--text-light); margin-top: 2px; letter-spacing: 0; }
.sidebar-float .sb-form-item { display: none; }

/* ========== SVG Icons ========== */
.icon-svg { display: inline-block; line-height: 1; flex-shrink: 0; }
.icon-svg svg { display: block; }

@media (max-width: 768px) {
  .sidebar-float {
    right: 8px;
    top: auto;
    bottom: 14px;
    transform: none;
    border-radius: 16px;
    overflow: visible;
    box-shadow: 0 16px 30px rgba(15, 23, 42, 0.16);
  }
  .sidebar-float .sb-item {
    width: 46px;
    height: 46px;
    font-size: 11px;
    border-radius: 0;
  }
  .sidebar-float .sb-item:first-child { border-radius: 16px 16px 0 0; }
  .sidebar-float .sb-item:last-child { border-radius: 0 0 16px 16px; }
  .sidebar-float .sb-item:hover,
  .sidebar-float .sb-item.is-peeking {
    width: 46px;
  }
  .sidebar-float .sb-popup {
    position: fixed;
    left: 14px;
    right: 66px;
    top: auto;
    bottom: 10px;
    transform: none;
    width: auto;
    max-width: none;
    min-width: 0;
    white-space: normal;
    border-radius: 18px;
    padding: 12px;
    text-align: center;
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.22);
  }
  .sidebar-float .sb-popup img {
    width: 112px;
    height: 112px;
    display: block;
    margin: 0 auto;
  }
  .sidebar-float .sb-popup .qr-tip {
    margin-top: 7px;
    font-size: 14px;
    line-height: 1.25;
  }
  .sidebar-float .sb-popup .qr-wechat-value {
    font-size: 21px;
    letter-spacing: 1px;
    word-break: normal;
    overflow-wrap: anywhere;
    writing-mode: horizontal-tb;
  }
  .sidebar-float .sb-popup .qr-wechat-copy {
    min-width: 92px;
    min-height: 30px;
    padding: 5px 12px;
    font-size: 13px;
    line-height: 1;
  }
  .sidebar-float .sb-popup.phone-popup {
    left: auto;
    right: 66px;
    width: min(68vw, 230px);
    min-width: 188px;
  }
}

@media (max-width: 420px) {
  .sidebar-float {
    right: 6px;
    bottom: 10px;
  }
  .sidebar-float .sb-item {
    width: 42px;
    height: 42px;
  }
  .sidebar-float .sb-popup {
    left: 12px;
    right: 56px;
    bottom: 10px;
    padding: 12px;
  }
  .sidebar-float .sb-popup img {
    width: 104px;
    height: 104px;
  }
  .sidebar-float .sb-popup .qr-tip {
    font-size: 14px;
  }
  .sidebar-float .sb-popup .qr-wechat-box {
    padding: 9px 10px;
  }
  .sidebar-float .sb-popup .qr-wechat-value {
    font-size: 20px;
  }
  .sidebar-float .sb-popup.phone-popup {
    right: 56px;
    width: min(68vw, 210px);
  }
}

/* ========== Mobile bottom conversion bar ========== */
@media (max-width: 640px) {
  .sidebar-float {
    left: 12px;
    right: 12px;
    top: auto;
    bottom: 10px;
    width: auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    transform: none;
    border-radius: 0;
    box-shadow: none;
  }

  .sidebar-float .sb-phone-item,
  .sidebar-float .sb-top-item {
    display: none !important;
  }

  .sidebar-float .sb-item.sb-qr,
  .sidebar-float .sb-item.sb-form-item {
    width: 100%;
    height: 52px;
    min-height: 52px;
    padding: 0 14px;
    border: 0;
    border-radius: 14px;
    color: #fff;
    flex-direction: row;
    gap: 8px;
    writing-mode: horizontal-tb;
    letter-spacing: 0;
    box-shadow: 0 10px 24px rgba(15,23,42,0.2);
  }

  .sidebar-float .sb-item.sb-qr {
    display: flex;
    background: #10b981;
  }

  .sidebar-float .sb-item.sb-form-item {
    display: flex;
    background: #2563eb;
  }

  .sidebar-float .sb-item.sb-qr:hover,
  .sidebar-float .sb-item.sb-qr.is-peeking,
  .sidebar-float .sb-item.sb-form-item:hover {
    width: 100%;
    color: #fff;
  }

  .sidebar-float .sb-item.sb-qr:hover,
  .sidebar-float .sb-item.sb-qr.is-peeking {
    background: #059669;
  }

  .sidebar-float .sb-item.sb-form-item:hover {
    background: #1d4ed8;
  }

  .sidebar-float .sb-item.sb-qr span,
  .sidebar-float .sb-item.sb-form-item span {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0;
  }

  .sidebar-float .sb-popup {
    position: fixed;
    left: 12px;
    right: 12px;
    top: auto;
    bottom: 76px;
    width: auto;
    max-width: none;
    padding: 14px;
    transform: none;
    border-radius: 18px;
  }

  .sidebar-float .sb-popup img {
    width: 120px;
    height: 120px;
  }

  /* 触屏设备不依赖 sticky hover，二维码仅在点击后显示。 */
  .sidebar-float .sb-item:hover .sb-popup {
    display: none;
  }

  .sidebar-float .sb-item.is-peeking .sb-popup {
    display: block;
  }
}

/* Commercial floating actions */
.sidebar-float {
  border: 1px solid rgba(203, 213, 225, 0.78);
  border-radius: 16px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 18px 44px rgba(7,26,53,.14);
}
.sidebar-float .sb-item {
  color: #41536d;
}
.sidebar-float .sb-item:hover,
.sidebar-float .sb-item.is-peeking {
  color: #155eef;
  background: #f1f6ff;
}
.sidebar-float .sb-popup {
  border-color: #dbe5f3;
  box-shadow: 0 24px 58px rgba(7,26,53,.18);
}

@media (max-width: 640px) {
  .sidebar-float {
    padding: 6px;
    gap: 6px;
    border: 1px solid rgba(203,213,225,.78);
    border-radius: 19px;
    background: rgba(255,255,255,.94);
    box-shadow: 0 16px 38px rgba(7,26,53,.18);
    backdrop-filter: blur(16px);
  }
  .sidebar-float .sb-item.sb-qr,
  .sidebar-float .sb-item.sb-form-item {
    height: 50px;
    min-height: 50px;
    border-radius: 14px;
    box-shadow: none;
  }
  .sidebar-float .sb-item.sb-qr {
    background: linear-gradient(135deg, #0f9f8f, #14b8a6);
  }
  .sidebar-float .sb-item.sb-form-item {
    background: linear-gradient(135deg, #0f4ccf, #1d67f2);
  }
  .sidebar-float .sb-item.sb-qr:hover,
  .sidebar-float .sb-item.sb-qr.is-peeking {
    background: linear-gradient(135deg, #0b887a, #0f9f8f);
  }
  .sidebar-float .sb-item.sb-form-item:hover {
    background: linear-gradient(135deg, #0b3b8f, #155eef);
  }
}