/* 知识版 · 高级蓝色主题 */
.theme-knowledge {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #60a5fa;
  --primary-bg: #eff6ff;
  --primary-soft: #dbeafe;
  --text: #1e293b;
  --text-muted: #64748b;
  --bg: #f8fbff;
  --white: #ffffff;
  --border: #bfdbfe;
  --shadow: 0 4px 24px rgba(37, 99, 235, 0.1);
  --shadow-lg: 0 12px 40px rgba(37, 99, 235, 0.16);
}

.theme-knowledge .hero {
  background: linear-gradient(165deg, #93c5fd 0%, #60a5fa 22%, #3b82f6 52%, #2563eb 78%, #1e40af 100%);
  padding: 44px 20px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.theme-knowledge .hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 85% 55% at 50% -10%, rgba(255,255,255,0.22), transparent 65%);
  pointer-events: none;
}
.theme-knowledge .hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.2); color: #fff;
  padding: 8px 16px; border-radius: 100px; font-size: 13px;
  border: 1px solid rgba(255,255,255,0.35); margin-bottom: 16px;
  position: relative; z-index: 1;
}
.theme-knowledge .hero h1 {
  font-size: clamp(28px, 7vw, 38px); font-weight: 900; color: #fff;
  margin-bottom: 8px; text-shadow: 0 4px 20px rgba(30, 64, 175, 0.45);
  position: relative; z-index: 1; letter-spacing: 0.02em;
}
.theme-knowledge .hero p {
  font-size: 15px; color: rgba(255,255,255,0.94); max-width: 320px; margin: 0 auto;
  line-height: 1.6; position: relative; z-index: 1;
}
.theme-knowledge .promo-strip { margin: -28px 16px 0; position: relative; z-index: 2; }
.theme-knowledge .promo-strip-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px 20px 22px 22px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 38%, #bfdbfe 100%);
  border-radius: 14px;
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.22);
  position: relative; overflow: hidden;
}
.theme-knowledge .promo-corner {
  position: absolute; top: 10px; right: -30px; background: #1e40af; color: #dbeafe;
  font-size: 12px; font-weight: 800; padding: 5px 38px; transform: rotate(45deg); letter-spacing: 0.12em;
}
.theme-knowledge .promo-content { flex: 1; min-width: 0; text-align: left; padding-right: 4px; }
.theme-knowledge .promo-main {
  font-size: clamp(26px, 7.5vw, 34px); font-weight: 900; color: #1e40af;
  letter-spacing: 0.06em; line-height: 1.1;
}
.theme-knowledge .promo-sub {
  display: block; font-size: clamp(12px, 3.4vw, 14px); font-weight: 600;
  color: #1d4ed8; opacity: 0.9; margin-top: 6px; letter-spacing: 0.02em; line-height: 1.45;
}
.theme-knowledge .promo-icon {
  width: 72px; height: 72px; border-radius: 18px; flex-shrink: 0;
  background: rgba(30, 64, 175, 0.12);
  display: flex; align-items: center; justify-content: center;
  color: #1d4ed8; font-size: 36px;
  box-shadow: inset 0 2px 8px rgba(30, 64, 175, 0.08);
}
.theme-knowledge .container { padding: 24px 16px 32px; }
.theme-knowledge .section-title {
  font-size: 18px; font-weight: 800; color: var(--primary-dark);
  margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
}
.theme-knowledge .section-title i { color: var(--primary); }
.theme-knowledge .price-section {
  background: linear-gradient(165deg, #eff6ff 0%, #fff 50%, #f0f9ff 100%);
  border: 2px solid #93c5fd;
  border-radius: 16px; padding: 18px 14px 14px; margin-bottom: 16px;
  box-shadow: 0 10px 36px rgba(37, 99, 235, 0.14);
}
.theme-knowledge .price-section .section-title { justify-content: center; font-size: 20px; margin-bottom: 16px; }
.theme-knowledge .price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.theme-knowledge .price-card {
  background: var(--white); border: 2px solid var(--border); border-radius: 14px; padding: 18px 14px;
  text-align: center; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.theme-knowledge .price-card.featured {
  border-color: var(--primary); box-shadow: 0 10px 32px rgba(37,99,235,0.22);
  background: linear-gradient(180deg, #eff6ff, #fff);
}
.theme-knowledge .price-card.featured::before {
  content: "推荐"; position: absolute; top: 10px; right: -24px;
  background: linear-gradient(135deg, #3b82f6, #2563eb); color: #fff;
  font-size: 11px; font-weight: 700; padding: 4px 32px; transform: rotate(45deg);
}
.theme-knowledge .price-card.diamond {
  border-color: #1e40af; background: linear-gradient(180deg, #eff6ff, #fff);
}
.theme-knowledge .price-card.diamond::before {
  content: "大空间"; position: absolute; top: 10px; right: -28px;
  background: linear-gradient(135deg, #1e40af, #2563eb); color: #fff;
  font-size: 11px; font-weight: 700; padding: 4px 32px; transform: rotate(45deg);
}
.theme-knowledge .price-card.buyout {
  border-color: #1e3a8a; background: linear-gradient(180deg, #eff6ff, #fff);
  display: flex; flex-direction: column;
}
.theme-knowledge .price-card.buyout::before {
  content: "源码"; position: absolute; top: 10px; right: -24px;
  background: linear-gradient(135deg, #1e3a8a, #312e81); color: #fff;
  font-size: 11px; font-weight: 700; padding: 4px 32px; transform: rotate(45deg);
}
.theme-knowledge .price-card.buyout .price-num { font-size: 26px; }
.theme-knowledge .price-card.buyout .btn-link {
  margin-top: auto; padding: 9px 8px; font-size: 12px; border-width: 1.5px;
}
.theme-knowledge .price-name { font-size: 16px; font-weight: 900; color: var(--text); margin-bottom: 6px; }
.theme-knowledge .price-storage {
  font-size: 11px; font-weight: 800; color: var(--primary-dark);
  background: var(--primary-bg); display: inline-block;
  padding: 2px 10px; border-radius: 100px; margin-bottom: 8px;
}
.theme-knowledge .price-tag {
  font-size: 12px; color: #fff; background: linear-gradient(135deg, #3b82f6, #2563eb);
  display: inline-block; padding: 3px 12px; border-radius: 100px; margin-bottom: 8px; font-weight: 700;
}
.theme-knowledge .price-official {
  display: block; font-size: 13px; color: #94a3b8; margin-bottom: 4px; line-height: 1.3;
  text-decoration: line-through; font-weight: 700;
  text-decoration-thickness: 2.5px; text-decoration-color: #64748b;
}
.theme-knowledge .price-num {
  font-size: 30px; font-weight: 900; color: var(--primary); line-height: 1.1;
}
.theme-knowledge .price-num span { font-size: 14px; font-weight: 600; }
.theme-knowledge .price-note { font-size: 12px; color: var(--text-muted); margin-top: 6px; line-height: 1.45; }
.theme-knowledge .card {
  background: var(--white); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.theme-knowledge .card h3 {
  font-size: clamp(17px,4.8vw,21px); font-weight: 900; color: var(--primary-dark);
  margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
}
.theme-knowledge .tips-grid { display: flex; flex-direction: column; gap: 12px; }
.theme-knowledge .tip-card {
  display: flex; gap: 14px; align-items: flex-start; padding: 18px 16px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--bg); position: relative; overflow: hidden;
}
.theme-knowledge .tip-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; }
.theme-knowledge .tip-card.tip-1::before { background: #60a5fa; }
.theme-knowledge .tip-card.tip-2::before { background: #2563eb; }
.theme-knowledge .tip-card.tip-3::before { background: #1e40af; }
.theme-knowledge .tip-card.tip-4::before { background: #1e3a8a; }
.theme-knowledge .tip-icon {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.theme-knowledge .tip-card.tip-1 .tip-icon { background: #dbeafe; color: #2563eb; }
.theme-knowledge .tip-card.tip-2 .tip-icon { background: #eff6ff; color: #1d4ed8; }
.theme-knowledge .tip-card.tip-3 .tip-icon { background: #f0f9ff; color: #1e40af; }
.theme-knowledge .tip-card.tip-4 .tip-icon { background: #eff6ff; color: #1e3a8a; }
.theme-knowledge .tip-body { flex: 1; min-width: 0; }
.theme-knowledge .tip-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: clamp(18px,5vw,22px); font-weight: 900; color: var(--primary-dark); margin-bottom: 12px;
}
.theme-knowledge .tip-label .tip-badge {
  font-size: clamp(12px,3.4vw,14px); font-weight: 900; color: #fff;
  background: var(--primary); padding: 4px 12px; border-radius: 100px; flex-shrink: 0;
}
.theme-knowledge .tip-card.tip-2 .tip-badge { background: #1d4ed8; }
.theme-knowledge .tip-card.tip-3 .tip-badge { background: #1e40af; }
.theme-knowledge .tip-card.tip-4 .tip-badge { background: #1e3a8a; }
.theme-knowledge .tip-text {
  font-size: clamp(14px,3.8vw,15px); font-weight: 500; color: #475569; line-height: 1.75;
}
.theme-knowledge .tip-text strong { font-weight: 800; color: var(--primary-dark); }
.theme-knowledge .tip-warn {
  margin-top: 12px; padding: 12px 14px; background: #fff7ed;
  border: 1px solid #fed7aa; border-radius: 10px;
  font-size: 13px; font-weight: 600; color: #9a3412; line-height: 1.65;
}
.theme-knowledge .tip-warn i { color: #ea580c; margin-right: 4px; }
.theme-knowledge .btn-link {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; margin-top: 12px; padding: 12px;
  border: 2px solid var(--primary); border-radius: 10px;
  background: var(--white); color: var(--primary-dark);
  text-decoration: none; font-size: 14px; font-weight: 700;
}
.theme-knowledge .advantages-section {
  margin-bottom: 20px; background: linear-gradient(165deg, #eff6ff 0%, #fff 40%, #f0f9ff 100%);
  border: 2px solid #93c5fd; border-radius: 16px; overflow: hidden;
  box-shadow: 0 10px 32px rgba(37, 99, 235, 0.12);
}
.theme-knowledge .advantages-head {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8); color: #fff; text-align: center;
  padding: 18px 16px 16px; position: relative;
}
.theme-knowledge .advantages-head::after {
  content: ""; position: absolute; bottom: -1px; left: 0; right: 0; height: 6px;
  background: linear-gradient(90deg, #93c5fd, #60a5fa, #93c5fd);
}
.theme-knowledge .advantages-head h3 { font-size: clamp(18px,5vw,22px); font-weight: 900; letter-spacing: 0.06em; margin-bottom: 4px; }
.theme-knowledge .advantages-head p { font-size: 12px; opacity: 0.9; font-weight: 600; }
.theme-knowledge .advantages-list { padding: 16px 14px 14px; display: flex; flex-direction: column; gap: 12px; }
.theme-knowledge .adv-item {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 14px 12px;
}
.theme-knowledge .adv-icon {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.theme-knowledge .adv-item:nth-child(1) .adv-icon { background: #fef3c7; color: #b45309; }
.theme-knowledge .adv-item:nth-child(2) .adv-icon { background: #dbeafe; color: #2563eb; }
.theme-knowledge .adv-item:nth-child(3) .adv-icon { background: #fce7f3; color: #db2777; }
.theme-knowledge .adv-item:nth-child(4) .adv-icon { background: #dcfce7; color: #16a34a; }
.theme-knowledge .adv-title {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: clamp(15px,4.2vw,17px); font-weight: 900; color: var(--primary-dark); margin-bottom: 6px;
}
.theme-knowledge .adv-num {
  font-size: 12px; font-weight: 900; color: #fff; background: var(--primary);
  padding: 2px 8px; border-radius: 100px; flex-shrink: 0;
}
.theme-knowledge .adv-item:nth-child(1) .adv-num { background: #b45309; }
.theme-knowledge .adv-item:nth-child(2) .adv-num { background: #2563eb; }
.theme-knowledge .adv-item:nth-child(3) .adv-num { background: #db2777; }
.theme-knowledge .adv-item:nth-child(4) .adv-num { background: #16a34a; }
.theme-knowledge .adv-text { font-size: clamp(13px,3.6vw,14px); font-weight: 500; color: #475569; line-height: 1.75; }
.theme-knowledge .adv-text strong { font-weight: 800; color: #334155; }
.theme-knowledge .adv-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.theme-knowledge .adv-tag {
  font-size: 11px; font-weight: 700; color: var(--primary-dark);
  background: var(--primary-bg); border: 1px solid rgba(37,99,235,0.2);
  padding: 3px 9px; border-radius: 100px;
}
.theme-knowledge .advantages-foot {
  margin: 0 14px 14px; padding: 14px 12px;
  background: linear-gradient(135deg, #1e3a8a, #1d4ed8); border-radius: 10px; text-align: center;
  color: #bfdbfe; font-size: clamp(14px,4vw,16px); font-weight: 900; letter-spacing: 0.08em;
}
.theme-knowledge .btn-case {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 16px; margin-top: 8px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff; text-decoration: none; border-radius: 12px; font-size: 17px; font-weight: 700;
  box-shadow: 0 6px 24px rgba(37,99,235,0.35);
}
.theme-knowledge .btn-trial {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 15px; margin-top: 10px;
  background: transparent; color: var(--primary-dark);
  border: 2px solid var(--primary); text-decoration: none;
  border-radius: 12px; font-size: 17px; font-weight: 700;
}
.theme-knowledge .tabbar-item.active { color: var(--primary); }
.theme-knowledge .tabbar-item.active::before { background: var(--primary); }