/* ===== QieYun Landing — Deep Slate ===== */
.rk-landing {
  --rk-bg: #030712;
  --rk-bg2: #0a0f1c;
  --rk-card: rgba(12, 18, 36, 0.78);
  --rk-card-hover: rgba(18, 28, 52, 0.92);
  --rk-border: rgba(148, 163, 184, 0.1);
  --rk-text: #f1f5f9;
  --rk-muted: #94a3b8;
  --rk-accent: #3b82f6;
  --rk-accent2: #22d3ee;
  --rk-green: #34d399;
  --rk-purple: #a855f7;
  --rk-glow: rgba(59, 130, 246, 0.45);
  --rk-glow-cyan: rgba(34, 211, 238, 0.35);
  min-height: 100vh;
  background: var(--rk-bg);
  color: var(--rk-text);
  font-family: Inter, 'PingFang SC', system-ui, sans-serif;
  overflow-x: hidden;
}

[data-theme="light"] .rk-landing {
  --rk-bg: #030712;
  --rk-bg2: #0a0f1c;
  --rk-card: rgba(12, 18, 36, 0.78);
  --rk-card-hover: rgba(18, 28, 52, 0.92);
  --rk-border: rgba(148, 163, 184, 0.1);
  --rk-text: #f1f5f9;
  --rk-muted: #94a3b8;
  --rk-glow: rgba(59, 130, 246, 0.45);
  --rk-glow-cyan: rgba(34, 211, 238, 0.35);
}

/* ---- Nav ---- */
.rk-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  background: rgba(2, 6, 23, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18);
}

[data-theme="light"] .rk-nav {
  background: rgba(2, 6, 23, 0.72);
  border-bottom-color: rgba(255, 255, 255, 0.07);
}

.rk-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.rk-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  flex-shrink: 0;
  min-width: 0;
}

.rk-logo img { height: 30px; width: auto; }

.rk-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--rk-accent), var(--rk-accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
  color: #fff;
  box-shadow: 0 4px 16px var(--rk-glow);
}

.rk-logo-text {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rk-nav-links {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.rk-nav-links a {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(226, 232, 240, 0.72);
  cursor: pointer;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s, box-shadow 0.2s;
  text-decoration: none;
}

.rk-nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.rk-nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.rk-nav-actions .fw-theme-switcher { position: relative; z-index: 2; }

.rk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.25s, border-color 0.25s;
}

.rk-btn:active { transform: scale(0.98); }

.rk-btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #0891b2 100%);
  color: #fff;
  box-shadow: 0 4px 24px var(--rk-glow);
}

.rk-btn-primary:hover {
  box-shadow: 0 8px 32px var(--rk-glow), 0 0 0 1px rgba(34,211,238,0.2) inset;
}

.rk-btn-glow {
  position: relative;
}

.rk-btn-glow::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(59,130,246,0.5), rgba(34,211,238,0.3));
  z-index: -1;
  opacity: 0;
  filter: blur(8px);
  transition: opacity 0.3s;
}

.rk-btn-glow:hover::after { opacity: 1; }

.rk-btn-ghost {
  background: rgba(255,255,255,0.04);
  color: var(--rk-text);
  border: 1px solid var(--rk-border);
}

.rk-btn-ghost:hover {
  border-color: rgba(59,130,246,0.35);
  background: rgba(59,130,246,0.08);
}

.rk-btn-sm { padding: 7px 14px; font-size: 13px; font-weight: 600; }

.rk-btn-block { width: 100%; }

.rk-menu-btn {
  display: none;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, border-color 0.2s;
}

.rk-menu-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.rk-menu-icon,
.rk-menu-icon::before,
.rk-menu-icon::after {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  margin: 0 auto;
  transition: transform 0.2s, opacity 0.2s;
}

.rk-menu-icon {
  position: relative;
}

.rk-menu-icon::before,
.rk-menu-icon::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.rk-menu-icon::before { top: -5px; }
.rk-menu-icon::after { top: 5px; }

body.rk-drawer-open { overflow: hidden; }

.rk-drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(4px);
  animation: rkDrawerFadeIn 0.22s ease;
}

.rk-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(300px, 88vw);
  z-index: 201;
  background: rgba(10, 15, 28, 0.98);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.35);
  animation: rkDrawerSlideIn 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes rkDrawerFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes rkDrawerSlideIn {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.rk-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 4px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.rk-drawer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.rk-drawer-close {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.rk-drawer-close:hover { background: rgba(255, 255, 255, 0.1); }

.rk-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  overflow-y: auto;
}

.rk-drawer-nav a {
  padding: 13px 14px;
  border-radius: 10px;
  color: rgba(241, 245, 249, 0.92);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.rk-drawer-nav a:hover,
.rk-drawer-nav a:active {
  background: rgba(59, 130, 246, 0.12);
  color: #fff;
}

.rk-drawer-foot {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ---- Hero — Premium VPN ---- */
.rk-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  background: #020617;
  overflow: hidden;
  padding: 60px 0 0;
}

[data-theme="light"] .rk-hero { background: #020617; }

.rk-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.rk-hero-stars {
  position: absolute;
  inset: 0;
  background: #020617;
}

.rk-stars,
.rk-stars-2 {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 8% 12%, rgba(255,255,255,0.9), transparent),
    radial-gradient(1px 1px at 22% 38%, rgba(255,255,255,0.55), transparent),
    radial-gradient(1.5px 1.5px at 42% 8%, rgba(255,255,255,0.95), transparent),
    radial-gradient(1px 1px at 58% 28%, rgba(255,255,255,0.65), transparent),
    radial-gradient(1px 1px at 78% 52%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 92% 18%, rgba(200,220,255,0.8), transparent),
    radial-gradient(1px 1px at 12% 72%, rgba(255,255,255,0.45), transparent),
    radial-gradient(1.5px 1.5px at 35% 58%, rgba(255,255,255,0.75), transparent),
    radial-gradient(1px 1px at 65% 68%, rgba(255,255,255,0.55), transparent),
    radial-gradient(1px 1px at 88% 82%, rgba(255,255,255,0.4), transparent);
  background-size: 480px 480px;
  animation: rkStarsDrift 140s linear infinite;
}

.rk-stars-2 {
  background-size: 320px 320px;
  opacity: 0.45;
  animation: rkStarsDrift 90s linear infinite reverse;
}

@keyframes rkStarsDrift {
  from { background-position: 0 0; }
  to { background-position: 480px 480px; }
}

.rk-hero-aurora {
  position: absolute;
  inset: -20% -10%;
  background:
    radial-gradient(ellipse 50% 40% at 20% 60%, rgba(59, 130, 246, 0.18) 0%, transparent 70%),
    radial-gradient(ellipse 45% 35% at 80% 30%, rgba(34, 211, 238, 0.12) 0%, transparent 65%),
    radial-gradient(ellipse 40% 30% at 50% 90%, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
  animation: rkAuroraPulse 12s ease-in-out infinite alternate;
}

@keyframes rkAuroraPulse {
  from { opacity: 0.7; transform: scale(1); }
  to { opacity: 1; transform: scale(1.05); }
}

.rk-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 75%);
}

.rk-hero-container {
  position: relative;
  z-index: 3;
  max-width: 1200px;
  margin: 0 auto;
  min-height: calc(100vh - 60px);
  min-height: calc(100dvh - 60px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px 80px;
  text-align: center;
}

.rk-hero-copy {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.rk-hero-vignette {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 85% 55% at 50% 38%, rgba(2, 6, 23, 0.45) 0%, rgba(2, 6, 23, 0.08) 50%, rgba(2, 6, 23, 0.35) 100%),
    linear-gradient(180deg, rgba(2, 6, 23, 0.65) 0%, rgba(2, 6, 23, 0.12) 28%, rgba(2, 6, 23, 0) 52%, rgba(2, 6, 23, 0.22) 82%, rgba(2, 6, 23, 0.55) 100%);
}

/* 全屏地球背景 — 对齐 AirRocket 弧面（宽约 80vw，弧顶约 20vh） */
.rk-hero-earth-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
}

.rk-hero-earth {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: max(170dvh, 80vw);
  height: max(170dvh, 80vw);
  transform: translate(-50%, 53%);
  pointer-events: none;
}

@media (min-width: 960px) {
  .rk-hero-earth {
    width: max(168dvh, 82vw);
    height: max(168dvh, 82vw);
    transform: translate(-50%, 52%);
  }
}

@media (max-width: 520px) {
  .rk-hero-earth {
    width: max(175dvh, 92vw);
    height: max(175dvh, 92vw);
    transform: translate(-50%, 54%);
  }
}

.rk-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  margin-bottom: 20px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #bae6fd;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(96, 165, 250, 0.35);
  backdrop-filter: blur(8px);
}

.rk-hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 12px #22d3ee;
  animation: rkBadgePulse 2s ease-in-out infinite;
}

@keyframes rkBadgePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.rk-hero-brand {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #fff;
  text-shadow: 0 0 48px rgba(59, 130, 246, 0.4), 0 4px 24px rgba(0, 0, 0, 0.9);
}

.rk-hero-tagline {
  margin: 0 0 14px;
  font-size: clamp(1.1rem, 2.8vw, 1.5rem);
  font-weight: 700;
  line-height: 1.4;
  background: linear-gradient(135deg, #ffffff 0%, #93c5fd 50%, #22d3ee 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.8));
}

.rk-hero-desc {
  margin: 0 auto;
  max-width: 560px;
  font-size: clamp(0.875rem, 1.8vw, 1rem);
  line-height: 1.7;
  color: rgba(203, 213, 225, 0.92);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.8);
}

.rk-hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
}

.rk-btn-hero-cta {
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 12px;
  min-width: 160px;
  color: #fff;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #0891b2 100%);
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.5), 0 0 0 1px rgba(147, 197, 253, 0.25) inset;
  transition: transform 0.2s, box-shadow 0.25s;
}

.rk-btn-hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(37, 99, 235, 0.65), 0 0 48px rgba(34, 211, 238, 0.25);
}

.rk-btn-hero-secondary {
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.25);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.rk-btn-hero-secondary:hover {
  border-color: rgba(59, 130, 246, 0.5);
  background: rgba(59, 130, 246, 0.1);
}

.rk-hero-stats {
  display: none;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
}

@media (min-width: 960px) {
  .rk-hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }
}

.rk-hero-stat strong {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.rk-hero-stat span {
  font-size: 11px;
  color: var(--rk-muted);
  margin-top: 2px;
  display: block;
}

/* 地球轨道与球体 */
.rk-orbit-rotator {
  position: absolute;
  inset: 0;
  animation: rkOrbitRotator 50s linear infinite;
  transform-origin: 50% 42%;
}

@keyframes rkOrbitRotator {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.rk-orbit-ring {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.22);
  pointer-events: none;
}

.rk-orbit-ring--outer { width: 100%; height: 100%; }
.rk-orbit-ring--inner {
  width: 76%;
  height: 76%;
  border-color: rgba(255, 255, 255, 0.12);
}

.rk-conn-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.7;
}

.rk-conn-arc {
  stroke-dasharray: 8 6;
  animation: rkConnFlow 4s linear infinite;
}

.rk-conn-arc-2 { animation-delay: -1.3s; }
.rk-conn-arc-3 { animation-delay: -2.6s; }

@keyframes rkConnFlow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -28; }
}

.rk-hero-pill {
  position: absolute;
  z-index: 5;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #e0f2fe;
  background: rgba(29, 78, 216, 0.55);
  border: 1px solid rgba(96, 165, 250, 0.5);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 22px rgba(37, 99, 235, 0.45);
  white-space: nowrap;
  animation: rkPillCounter 50s linear infinite;
}

.rk-hero-pill-1 { top: 6%; left: 50%; transform: translate(-50%, -50%); }
.rk-hero-pill-2 { top: 38%; left: 94%; transform: translate(-50%, -50%); }
.rk-hero-pill-3 { top: 62%; left: 82%; transform: translate(-50%, -50%); }
.rk-hero-pill-4 { top: 38%; left: 6%; transform: translate(-50%, -50%); }

@keyframes rkPillCounter {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(-360deg); }
}

.rk-earth-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.rk-earth-glow {
  position: absolute;
  width: 110%;
  height: 110%;
  border-radius: 50%;
  box-shadow:
    0 -12px 80px 40px rgba(37, 99, 235, 0.55),
    0 -4px 160px 80px rgba(59, 130, 246, 0.25),
    0 0 200px 60px rgba(37, 99, 235, 0.15);
  z-index: 0;
}

.rk-earth-sphere {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  z-index: 1;
  background: #010103;
  box-shadow:
    0 0 60px rgba(59, 130, 246, 0.4),
    inset 0 0 40px rgba(59, 130, 246, 0.1);
  animation: rkEarthIntro 2.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes rkEarthIntro {
  from { transform: scale(0.72); opacity: 0.3; }
  to { transform: scale(1); opacity: 1; }
}

.rk-earth-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: rkEarthSpinFlat 120s linear infinite;
  will-change: transform;
}

@keyframes rkEarthSpinFlat {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.rk-earth-shade {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(ellipse 90% 60% at 30% 30%, transparent 0%, rgba(0, 0, 0, 0.55) 100%),
    radial-gradient(ellipse 130% 90% at 50% 110%, rgba(0, 0, 0, 0.6) 0%, transparent 55%);
  z-index: 2;
  pointer-events: none;
}

.rk-earth-limb {
  position: absolute;
  top: 2%;
  left: 10%;
  right: 10%;
  height: 6%;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(191, 219, 254, 0.9) 0%, rgba(59, 130, 246, 0.3) 60%, transparent 100%);
  filter: blur(1px);
  z-index: 3;
  pointer-events: none;
}

/* ---- Trust bar ---- */
.rk-trust-bar {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  background: rgba(10, 15, 28, 0.85);
  backdrop-filter: blur(12px);
}

.rk-trust-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(148, 163, 184, 0.08);
}

@media (min-width: 640px) {
  .rk-trust-inner { grid-template-columns: repeat(4, 1fr); }
}

.rk-trust-item {
  padding: 20px 16px;
  text-align: center;
  background: rgba(10, 15, 28, 0.95);
}

.rk-trust-item strong {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #93c5fd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.rk-trust-item span {
  font-size: 11px;
  color: var(--rk-muted);
  margin-top: 4px;
  display: block;
}

/* ---- Features — 图一同款黑底 ---- */
.rk-features-section {
  max-width: none;
  background: #000;
  padding: 80px 24px 96px;
}

.rk-features-section .rk-section-head h2 {
  color: #fff;
}

.rk-features-section .rk-section-head p {
  color: #9ca3af;
}

.rk-feature-card {
  padding: 28px 24px;
  border-radius: 16px;
  background: #11141d;
  border: 1px solid rgba(148, 163, 184, 0.08);
  backdrop-filter: none;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.rk-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.25);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
}

.rk-feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.rk-feature-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.rk-feature-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: #9ca3af;
}

.rk-section-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rk-accent2);
}

.rk-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .rk-features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .rk-features-grid { grid-template-columns: repeat(3, 1fr); }
}

.rk-stream-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 24px;
}

.rk-stream-chip {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
}

/* ---- Privacy — 图一/图二流程图 + 传输效果 ---- */
.rk-privacy-section {
  max-width: none;
  background: #000;
  padding: 80px 24px 96px;
}

.rk-privacy-head {
  text-align: center;
  margin-bottom: 48px;
}

.rk-privacy-head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  color: #fff;
}

.rk-privacy-head p {
  margin: 0 auto;
  max-width: 720px;
  font-size: 14px;
  line-height: 1.65;
  color: #9ca3af;
}

.rk-privacy-diagram {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.rk-privacy-side {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 120px;
}

.rk-privacy-circle {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.02);
}

.rk-privacy-device-icon {
  width: 44px;
  height: 44px;
  opacity: 0.9;
}

.rk-privacy-side-label {
  font-size: 13px;
  color: #fff;
  font-weight: 500;
  white-space: nowrap;
}

.rk-privacy-link {
  position: relative;
  flex: 1;
  min-width: 56px;
  max-width: 140px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 4px;
}

.rk-privacy-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(148, 163, 184, 0.22);
  overflow: hidden;
  transform: translateY(-50%);
}

.rk-privacy-pulse {
  position: absolute;
  top: -2px;
  left: -40%;
  width: 42%;
  height: 5px;
  border-radius: 4px;
  background: linear-gradient(90deg, transparent, #22d3ee 30%, #34d399 70%, transparent);
  box-shadow: 0 0 14px rgba(52, 211, 153, 0.55);
  animation: rkPrivacyTransmit 2.4s ease-in-out infinite;
}

.rk-privacy-pulse--delay {
  animation-delay: 1.2s;
}

.rk-privacy-link--reverse .rk-privacy-pulse {
  animation-name: rkPrivacyTransmitRev;
}

@keyframes rkPrivacyTransmit {
  0% { left: -45%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { left: 105%; opacity: 0; }
}

@keyframes rkPrivacyTransmitRev {
  0% { left: 105%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { left: -45%; opacity: 0; }
}

.rk-privacy-bolt {
  position: relative;
  z-index: 2;
  font-size: 16px;
  color: #34d399;
  text-shadow: 0 0 12px rgba(52, 211, 153, 0.8);
  line-height: 1;
}

.rk-privacy-hub {
  flex-shrink: 0;
  display: flex;
  align-items: stretch;
  background: linear-gradient(145deg, #141820 0%, #0f1218 100%);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: 16px;
  padding: 20px 8px;
  box-shadow: 0 0 60px rgba(52, 211, 153, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  position: relative;
  overflow: hidden;
}

.rk-privacy-hub::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: -10%;
  width: 120%;
  height: 60px;
  background: radial-gradient(ellipse at center, rgba(52, 211, 153, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.rk-privacy-hub-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 8px 12px;
  min-width: 88px;
  position: relative;
  z-index: 1;
}

.rk-privacy-hub-icon {
  font-size: 26px;
  line-height: 1;
  filter: grayscale(1) brightness(2);
}

.rk-privacy-hub-label {
  font-size: 11px;
  color: #e2e8f0;
  text-align: center;
  line-height: 1.4;
  max-width: 90px;
}

.rk-privacy-hub-divider {
  width: 1px;
  align-self: stretch;
  background: rgba(148, 163, 184, 0.15);
  margin: 8px 0;
  flex-shrink: 0;
}

.rk-privacy-orbit-wrap {
  position: relative;
  width: 120px;
  height: 120px;
  animation: rkOrbitSpinWrap 28s linear infinite;
}

.rk-privacy-circle--center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  z-index: 2;
  animation: rkOrbitSpinWrapRev 28s linear infinite;
}

.rk-orbit-app {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.rk-orbit-app--google { background: #4285f4; }
.rk-orbit-app--youtube { background: #ff0000; font-size: 9px; }
.rk-orbit-app--telegram { background: #29b6f6; font-size: 12px; }
.rk-orbit-app--twitter { background: #1da1f2; font-size: 12px; }
.rk-orbit-app--play { background: #01875f; font-size: 10px; }

.rk-orbit-app-1 { transform: rotate(0deg) translateY(-52px) rotate(0deg); }
.rk-orbit-app-2 { transform: rotate(72deg) translateY(-52px) rotate(-72deg); animation-delay: -4.8s; }
.rk-orbit-app-3 { transform: rotate(144deg) translateY(-52px) rotate(-144deg); animation-delay: -9.6s; }
.rk-orbit-app-4 { transform: rotate(216deg) translateY(-52px) rotate(-216deg); animation-delay: -14.4s; }
.rk-orbit-app-5 { transform: rotate(288deg) translateY(-52px) rotate(-288deg); animation-delay: -19.2s; }

@keyframes rkOrbitSpinWrap {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rkOrbitSpinWrapRev {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(-360deg); }
}

.rk-privacy-overseas {
  width: 140px;
}

@media (max-width: 900px) {
  .rk-privacy-diagram {
    flex-direction: column;
    gap: 20px;
  }
  .rk-privacy-link {
    flex: none;
    width: 32px;
    height: 56px;
    max-width: none;
    min-width: 0;
    margin: 0;
  }
  .rk-privacy-line {
    left: 50%;
    right: auto;
    top: 0;
    bottom: 0;
    width: 1px;
    height: auto;
    transform: translateX(-50%);
  }
  .rk-privacy-pulse {
    width: 5px;
    height: 42%;
    left: -2px;
    top: -45%;
    animation: rkPrivacyTransmitV 2.4s ease-in-out infinite;
  }
  .rk-privacy-pulse--delay { animation-delay: 1.2s; }
  .rk-privacy-link--reverse .rk-privacy-pulse { animation-name: rkPrivacyTransmitVRev; }
  .rk-privacy-bolt { transform: rotate(90deg); }
  .rk-privacy-hub { flex-direction: column; width: 100%; max-width: 320px; padding: 16px; }
  .rk-privacy-hub-divider { width: 80%; height: 1px; margin: 4px auto; align-self: center; }
  .rk-privacy-hub-item { flex-direction: row; gap: 12px; width: 100%; justify-content: flex-start; padding: 10px 16px; }
  .rk-privacy-hub-label { text-align: left; max-width: none; }
}

@keyframes rkPrivacyTransmitV {
  0% { top: -45%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { top: 105%; opacity: 0; }
}

@keyframes rkPrivacyTransmitVRev {
  0% { top: 105%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { top: -45%; opacity: 0; }
}

/* ---- Sections ---- */
.rk-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 20px;
  position: relative;
}

.rk-section-inner {
  position: relative;
  z-index: 1;
}

.rk-section-head { text-align: center; margin-bottom: 40px; }

.rk-section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 800;
}

.rk-section-head p {
  margin: 0;
  color: var(--rk-muted);
  font-size: 14px;
  line-height: 1.6;
}

/* ---- Clients — 图一 Bento 下载区 ---- */
.rk-clients-section {
  max-width: none;
  background: #000;
  padding: 80px 24px 96px;
}

.rk-clients-head {
  text-align: center;
  margin-bottom: 40px;
}

.rk-clients-head h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  color: #fff;
}

.rk-clients-sub {
  margin: 0 0 8px;
  font-size: 15px;
  color: #fff;
}

.rk-clients-desc {
  margin: 0 auto;
  max-width: 640px;
  font-size: 13px;
  line-height: 1.65;
  color: #9ca3af;
}

.rk-clients-bento {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: stretch;
}

.rk-dl-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 100%;
}

.rk-dl-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  flex: 1;
}

.rk-dl-card {
  position: relative;
  border-radius: 20px;
  padding: 18px 20px 20px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.rk-dl-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}

.rk-dl-card--macos {
  background: linear-gradient(160deg, #ececef 0%, #d4d4d8 55%, #c4c4c8 100%);
  color: #18181b;
  min-height: 520px;
}

.rk-dl-card--ios {
  background: linear-gradient(135deg, #ebe4f8 0%, #ddd0f0 50%, #d4c4eb 100%);
  color: #18181b;
  flex: 1;
  min-height: 240px;
}

.rk-dl-card--android {
  background: linear-gradient(145deg, #dff3ea 0%, #c8e8d8 55%, #b8dfc9 100%);
  color: #18181b;
}

.rk-dl-card--windows {
  background: linear-gradient(145deg, #dce9f8 0%, #c5daf2 55%, #b3cef0 100%);
  color: #18181b;
}

.rk-dl-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  position: relative;
  z-index: 2;
}

.rk-dl-os-icon { font-size: 22px; line-height: 1; }
.rk-dl-os-label { font-size: 15px; font-weight: 600; color: inherit; opacity: 0.85; }

.rk-dl-device {
  flex: 1;
  position: relative;
  margin: 8px 0 12px;
  min-height: 120px;
}

.rk-dl-device--laptop {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
}

.rk-dl-device--laptop::before {
  content: '';
  width: 78%;
  max-width: 280px;
  aspect-ratio: 1.35;
  background: linear-gradient(180deg, #3f3f46 0%, #27272a 100%);
  border-radius: 10px 10px 0 0;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  border: 2px solid #52525b;
}

.rk-dl-device--laptop::after {
  content: '';
  position: absolute;
  bottom: 0;
  width: 92%;
  max-width: 320px;
  height: 8px;
  background: #a1a1aa;
  border-radius: 0 0 6px 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.rk-dl-device--phone {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  width: 38%;
  max-width: 120px;
  aspect-ratio: 0.48;
  background: linear-gradient(160deg, #1c1c1e 0%, #3a3a3c 100%);
  border-radius: 22px;
  border: 3px solid #636366;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.rk-dl-device--phone::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 32%;
  height: 4px;
  background: #48484a;
  border-radius: 4px;
}

.rk-dl-card-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  z-index: 2;
  margin-top: auto;
}

.rk-dl-card-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.rk-dl-card-info strong {
  font-size: 15px;
  font-weight: 700;
  color: inherit;
}

.rk-dl-card-info span {
  font-size: 11px;
  line-height: 1.45;
  color: rgba(24, 24, 27, 0.65);
}

.rk-dl-btn-circle {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #18181b;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.rk-dl-card--compact {
  padding: 16px 18px 18px;
  min-height: 220px;
}

.rk-dl-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 12px 0 16px;
  position: relative;
  z-index: 2;
}

.rk-dl-card-body strong {
  font-size: 14px;
  font-weight: 700;
}

.rk-dl-card-body span {
  font-size: 11px;
  line-height: 1.5;
  color: rgba(24, 24, 27, 0.65);
}

.rk-dl-btn-outline {
  display: block;
  width: 100%;
  padding: 10px 16px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: #18181b;
  background: transparent;
  border: 1.5px solid rgba(24, 24, 27, 0.35);
  border-radius: 999px;
  position: relative;
  z-index: 2;
}

@media (max-width: 860px) {
  .rk-clients-bento {
    grid-template-columns: 1fr;
  }
  .rk-dl-card--macos { min-height: 400px; }
  .rk-dl-device--phone {
    position: relative;
    right: auto;
    top: auto;
    transform: none;
    margin: 0 auto;
    width: 100px;
  }
}

@media (max-width: 520px) {
  .rk-dl-duo { grid-template-columns: 1fr; }
  .rk-clients-section { padding: 56px 16px 72px; }
}

/* ---- Streaming — t2 流动图标背景 ---- */
.rk-stream-section {
  position: relative;
  max-width: none;
  min-height: 360px;
  padding: 88px 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rk-stream-bg {
  position: absolute;
  inset: 0;
  background: #000;
  overflow: hidden;
}

.rk-stream-flow {
  position: absolute;
  left: -15%;
  top: -35%;
  width: 130%;
  height: 170%;
  transform: rotate(-18deg) scale(1.08);
  transform-origin: center center;
  overflow: hidden;
}

.rk-stream-flow-track {
  display: flex;
  width: max-content;
  height: 100%;
  will-change: transform;
  animation: rkStreamFlow 45s linear infinite;
}

.rk-stream-flow-img {
  height: 100%;
  width: auto;
  flex-shrink: 0;
  display: block;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
}

@keyframes rkStreamFlow {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.rk-stream-vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 70% at 50% 50%, rgba(0, 0, 0, 0.92) 0%, rgba(0, 0, 0, 0.55) 42%, rgba(0, 0, 0, 0.15) 68%, rgba(0, 0, 0, 0.75) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.85) 0%, transparent 22%, transparent 78%, rgba(0, 0, 0, 0.9) 100%);
}

.rk-stream-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.rk-stream-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

.rk-stream-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(226, 232, 240, 0.85);
  text-transform: uppercase;
}

.rk-stream-head h2 {
  margin: 0 0 14px;
  font-size: clamp(1.5rem, 4.5vw, 2.25rem);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  text-shadow: 0 0 40px rgba(255, 255, 255, 0.25), 0 4px 24px rgba(0, 0, 0, 0.8);
}

.rk-stream-sub {
  margin: 0;
  font-size: clamp(0.85rem, 2.2vw, 0.95rem);
  line-height: 1.65;
  color: rgba(203, 213, 225, 0.82);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.9);
}

/* ---- Nodes — 图一：6 列国旗网格 ---- */
.rk-nodes-section {
  max-width: none;
  background: #000;
  padding: 80px 24px 96px;
}

.rk-nodes-section .rk-section-head {
  margin-bottom: 48px;
}

.rk-nodes-section .rk-section-head h2 {
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}

.rk-nodes-section .rk-section-head p {
  color: #9ca3af;
  font-size: 14px;
  margin-top: 12px;
}

.rk-nodes-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 12px;
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}

@media (min-width: 520px) {
  .rk-nodes-grid { grid-template-columns: repeat(3, 1fr); gap: 22px 16px; }
}

@media (min-width: 768px) {
  .rk-nodes-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .rk-nodes-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 26px 18px;
  }
}

.rk-node-item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 2px 0;
}

.rk-lazy-section {
  content-visibility: auto;
  contain-intrinsic-size: auto 480px;
}

.rk-hero--paused .rk-earth-img,
.rk-hero--paused .rk-orbit-rotator,
.rk-hero--paused .rk-stars,
.rk-hero--paused .rk-stars-2,
.rk-hero--paused .rk-hero-aurora,
.rk-hero--paused .rk-conn-arc,
.rk-hero--paused .rk-hero-pill,
html.qy-page-hidden .rk-earth-img,
html.qy-page-hidden .rk-orbit-rotator,
html.qy-page-hidden .rk-stars,
html.qy-page-hidden .rk-stars-2 {
  animation-play-state: paused !important;
}

.rk-node-flag {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #e2e8f0;
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.rk-node-name {
  font-size: 13px;
  font-weight: 400;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Plans — 图二黑底卡片 ---- */
.rk-plans-section {
  max-width: none;
  background: #000;
  padding: 80px 24px 96px;
}

.rk-plans-section .rk-section-head h2 {
  color: #fff;
  font-weight: 700;
}

.rk-plans-section .rk-section-head p {
  color: #9ca3af;
}

.rk-plans-toggle {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}

.rk-plans-toggle button {
  padding: 10px 22px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.rk-plans-toggle button.active {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}

.rk-plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

@media (max-width: 960px) {
  .rk-plans-grid { grid-template-columns: 1fr; max-width: 420px; }
}

.rk-plan-card {
  position: relative;
  padding: 32px 28px 28px;
  border-radius: 16px;
  background: #151515;
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, transform 0.25s;
}

.rk-plan-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle at top left, rgba(79, 209, 197, 0.22) 0%, transparent 68%);
  pointer-events: none;
}

.rk-plan-card:hover {
  border-color: rgba(79, 209, 197, 0.22);
  transform: translateY(-4px);
}

.rk-plan-card h3 {
  margin: 0 0 20px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  position: relative;
  z-index: 1;
}

.rk-plan-price-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.rk-plan-price-main {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.rk-plan-price-main strong {
  font-size: clamp(1.75rem, 3vw, 2.1rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.rk-plan-unit {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.rk-plan-year-tag {
  font-size: 13px;
  font-weight: 500;
  color: #4fd1c5;
  white-space: nowrap;
}

.rk-plan-feats {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  flex: 1;
  position: relative;
  z-index: 1;
}

.rk-plan-feats li {
  position: relative;
  padding: 7px 0 7px 22px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.rk-plan-feats li:last-child { border-bottom: none; }

.rk-plan-feats li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 8px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.rk-plan-buy {
  width: 100%;
  padding: 14px 20px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  position: relative;
  z-index: 1;
}

.rk-plan-buy:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
}

/* ---- Support + Footer ---- */
.rk-support-card {
  text-align: center;
  padding: 32px 24px;
  border-radius: 16px;
  background: var(--rk-card);
  border: 1px solid var(--rk-border);
  backdrop-filter: blur(12px);
}

.rk-support-icon { font-size: 40px; margin-bottom: 12px; }

.rk-footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--rk-border);
  color: var(--rk-muted);
  font-size: 13px;
}

.rk-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: 12px;
}

.rk-footer-links a { color: var(--rk-muted); cursor: pointer; text-decoration: none; }
.rk-footer-links a:hover { color: var(--rk-accent2); }

.rk-style-switch {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--rk-border);
  background: var(--rk-card);
  backdrop-filter: blur(12px);
  color: var(--rk-text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.rk-empty {
  text-align: center;
  padding: 48px;
  color: var(--rk-muted);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .rk-nav-inner {
    height: 56px;
    padding: 0 14px;
    gap: 8px;
  }

  .rk-nav-links { display: none; }

  .rk-nav-actions {
    margin-left: auto;
    gap: 6px;
  }

  .rk-nav-actions .rk-nav-login { display: none; }
  .rk-nav-actions .rk-nav-buy {
    padding: 7px 12px;
    font-size: 12px;
    white-space: nowrap;
  }

  .rk-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .rk-logo-text {
    max-width: 120px;
    font-size: 15px;
  }

  .rk-hero { padding-top: 56px; }
  .rk-hero-container {
    min-height: calc(100vh - 56px);
    min-height: calc(100dvh - 56px);
  }

  .rk-hero-pill { font-size: 10px; padding: 5px 11px; }
}

@media (max-width: 520px) {
  .rk-nav-actions .rk-nav-buy { display: none; }
  .rk-logo-text { max-width: 96px; font-size: 14px; }

  .rk-hero-container { padding: 32px 16px 56px; }
  .rk-hero-brand { font-size: clamp(1.75rem, 7vw, 2.25rem); }
  .rk-hero-cta-row { flex-direction: column; align-items: stretch; }
  .rk-btn-hero-cta, .rk-btn-hero-secondary { width: 100%; }
  .rk-hero-pill-3,
  .rk-hero-pill-4 { display: none; }
  .rk-section { padding: 48px 16px; }
  .rk-flow-arrow { transform: rotate(90deg); }
  .rk-style-switch { bottom: 16px; right: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .rk-earth-img,
  .rk-orbit-rotator,
  .rk-conn-arc,
  .rk-hero-pill,
  .rk-stars,
  .rk-stars-2,
  .rk-hero-aurora,
  .rk-stream-flow-track {
    animation: none !important;
  }
}