/* ==========================================================================
   功能特性页样式
   ========================================================================== */

.page-hero {
  padding: 80px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-2), var(--color-bg));
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(245, 197, 24, 0.1), transparent 70%);
  pointer-events: none;
}
.page-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  margin: 16px 0 16px;
  position: relative;
}
.page-hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.page-hero p {
  font-size: 17px;
  color: var(--color-text-2);
  max-width: 680px;
  margin: 0 auto;
  position: relative;
}

/* 硬件类型网格 ---------------------------------------------------------- */
.hw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.hw-tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--t);
}
.hw-tile:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.hw-tile-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.hw-tile-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: rgba(245, 197, 24, 0.1);
  color: var(--c, var(--color-primary));
  flex-shrink: 0;
}
.hw-tile-icon svg { width: 24px; height: 24px; }
.hw-tile h3 { font-size: 20px; margin: 0; }
.hw-tile-list { display: flex; flex-direction: column; gap: 10px; }
.hw-tile-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.6;
}
.hw-tile-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* 高级功能区 ------------------------------------------------------------- */
.features-section { background: var(--color-bg-2); }
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.adv-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--t);
  position: relative;
  overflow: hidden;
}
.adv-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}
.adv-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(245, 197, 24, 0.06), transparent 70%);
  border-radius: 50%;
  transform: translate(40px, -40px);
}
.adv-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  position: relative;
}
.adv-card h3 { font-size: 22px; margin-bottom: 12px; position: relative; }
.adv-card p {
  font-size: 14px;
  color: var(--color-text-3);
  line-height: 1.7;
  margin-bottom: 16px;
  position: relative;
}
.adv-code {
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 16px;
  position: relative;
}
.adv-code code {
  font-size: 12px;
  color: var(--color-primary);
}
.adv-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}
.adv-list li {
  font-size: 13px;
  color: var(--color-text-2);
  display: flex;
  align-items: center;
  gap: 8px;
}
.adv-list li::before {
  content: "→";
  color: var(--color-primary);
  font-weight: 700;
}

/* 对比表 ---------------------------------------------------------------- */
.compare-section { background: var(--color-bg); }
.compare-table {
  max-width: 920px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}
.compare-row:last-child { border-bottom: none; }
.compare-row > div {
  text-align: center;
  color: var(--color-text-2);
}
.compare-row > div:first-child {
  text-align: left;
  color: var(--color-text);
  font-weight: 500;
}
.compare-head {
  background: var(--color-bg-3);
  font-weight: 700;
  color: var(--color-text);
}
.compare-head > div { color: var(--color-text); }
.compare-head .hl { color: var(--color-primary); }
.compare-row .hl {
  background: rgba(245, 197, 24, 0.06);
  color: var(--color-primary) !important;
  font-weight: 600;
  border-left: 1px solid rgba(245, 197, 24, 0.2);
  border-right: 1px solid rgba(245, 197, 24, 0.2);
  margin: -16px 0;
  padding: 16px 0;
}
.check { color: var(--color-success); font-size: 18px; font-weight: 700; }
.cross { color: var(--color-danger); font-size: 18px; font-weight: 700; }
.warn { color: var(--color-warning); font-size: 13px; font-weight: 500; }

/* CTA 卡（复用首页样式） */
.cta-card {
  background: linear-gradient(135deg, var(--color-bg-3), var(--color-bg));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 197, 24, 0.15), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-content .badge { margin-bottom: 16px; }
.cta-content h2 {
  font-size: clamp(28px, 4vw, 38px);
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 16px;
  color: var(--color-text-2);
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.cta-content em {
  font-style: normal;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* 响应式 */
@media (max-width: 1024px) {
  .hw-grid, .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-row { grid-template-columns: 1.4fr 1fr 1fr 1fr; font-size: 13px; }
}
@media (max-width: 640px) {
  .page-hero { padding: 56px 0 32px; }
  .hw-grid, .adv-grid { grid-template-columns: 1fr; }
  .compare-row {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    padding: 12px 16px;
    font-size: 12px;
  }
  .cta-card { padding: 32px 20px; }
}

/* 滚动显示 */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal]:nth-child(2) { transition-delay: 0.08s; }
[data-reveal]:nth-child(3) { transition-delay: 0.16s; }
[data-reveal]:nth-child(4) { transition-delay: 0.24s; }
[data-reveal]:nth-child(5) { transition-delay: 0.32s; }
[data-reveal]:nth-child(6) { transition-delay: 0.4s; }