/* 对齐 https://www.skhxd.top/ 深色落地页样式 */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
}

.page {
  --bg: #0c1021;
  --surface: #141a2e;
  --surface-2: #1b2340;
  --border: hsla(0, 0%, 100%, 0.06);
  --border-h: hsla(0, 0%, 100%, 0.12);
  --tx: #e2e6f0;
  --tx2: #7e8ba4;
  --tx3: #4a5472;
  --accent: #6c8cff;
  --accent2: #4f6ef0;
  --accent-bg: rgba(108, 140, 255, 0.08);
  --green: #34d399;
  --green-bg: rgba(52, 211, 153, 0.08);
  --r: 14px;
  --r-sm: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background: var(--bg);
  min-height: 100vh;
  color: var(--tx);
  font-family: var(--font);
}

/* —— Header —— */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 15, 26, 0.85);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid hsla(0, 0%, 100%, 0.06);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(108, 140, 255, 0.3));
}

.brand-text {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

.brand-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(108, 140, 255, 0.8);
  padding: 3px 10px;
  border: 1px solid rgba(108, 140, 255, 0.2);
  border-radius: 100px;
  background: rgba(108, 140, 255, 0.06);
}

/* —— Main —— */
.main {
  max-width: 1060px;
  margin: 0 auto;
  padding: 110px 28px 0;
}

.section {
  margin-bottom: 56px;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.section-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.section-icon.green {
  background: var(--green-bg);
  color: var(--green);
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
}

.section-sub {
  font-size: 13px;
  color: var(--tx3);
  margin: 3px 0 0;
}

/* —— Cards —— */
.card-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.dl-card,
.inst-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  display: flex;
  flex-direction: column;
  transition: all 0.25s;
}

.dl-card:hover,
.inst-card:hover {
  border-color: var(--border-h);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

.dl-top,
.inst-top {
  padding: 28px 22px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.dl-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.dl-icon.blue {
  background: linear-gradient(
    135deg,
    rgba(108, 140, 255, 0.18),
    rgba(108, 140, 255, 0.06)
  );
  color: var(--accent);
}

.dl-icon.green {
  background: linear-gradient(
    135deg,
    rgba(52, 211, 153, 0.18),
    rgba(52, 211, 153, 0.06)
  );
  color: var(--green);
}

.dl-meta h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 4px;
}

.dl-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 2px 10px;
  border-radius: 100px;
}

.inst-rec {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-bg);
  padding: 2px 10px;
  border-radius: 100px;
}

.dl-bottom {
  padding: 14px 22px 22px;
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  gap: 10px;
}

.dl-bottom-end {
  justify-content: flex-end;
}

.dl-ver {
  font-size: 13px;
  color: var(--tx3);
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
}

.btn-dl,
.btn-inst {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 9px 20px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-dl {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}

.btn-dl:hover:not(:disabled) {
  box-shadow: 0 4px 18px rgba(108, 140, 255, 0.35);
  transform: translateY(-1px);
}

.btn-inst {
  background: linear-gradient(135deg, var(--green), #22b080);
}

.btn-inst:hover:not(:disabled) {
  box-shadow: 0 4px 18px rgba(52, 211, 153, 0.3);
  transform: translateY(-1px);
}

.btn-dl:disabled,
.btn-inst:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-soon {
  background: var(--surface-2) !important;
  color: var(--tx2) !important;
  border: 1px solid var(--border-h);
  opacity: 1 !important;
  cursor: default !important;
}

/* —— Features —— */
.features-row {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.feat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 100px;
  font-size: 13px;
  color: var(--tx2);
  background: var(--surface);
  border: 1px solid var(--border);
}

.feat svg {
  color: var(--green);
  flex-shrink: 0;
}

.footer {
  text-align: center;
  padding: 44px 0 28px;
  color: var(--tx3);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

/* —— Toast —— */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  padding: 12px 22px;
  border-radius: 10px;
  background: rgba(20, 26, 46, 0.95);
  border: 1px solid var(--border-h);
  color: var(--tx);
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  animation: toast-in 0.25s ease;
}

.toast.ok {
  border-color: rgba(52, 211, 153, 0.35);
  color: var(--green);
}

.toast.warn {
  border-color: rgba(108, 140, 255, 0.35);
  color: var(--accent);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, -8px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* —— Responsive —— */
@media (max-width: 768px) {
  .card-row {
    grid-template-columns: 1fr;
  }

  .features-row {
    flex-direction: column;
  }

  .brand-name {
    font-size: 16px;
  }

  .main {
    padding: 96px 18px 0;
  }
}

@media (min-width: 769px) and (max-width: 960px) {
  .card-row {
    grid-template-columns: repeat(2, 1fr);
  }
}