/* ===== 基础 ===== */
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  background: #07091a;
  color: #d6dcec;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; }

/* ===== 背景 ===== */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
  pointer-events: none; z-index: 0;
}
.bg-glow {
  position: fixed; border-radius: 50%; filter: blur(120px); opacity: .55; pointer-events: none; z-index: 0;
}
.bg-glow-1 { width: 520px; height: 520px; background: #00d4ff; top: -160px; left: -160px; opacity: .25; }
.bg-glow-2 { width: 480px; height: 480px; background: #7a5cff; top: 30%; right: -200px; opacity: .22; }
.bg-glow-3 { width: 380px; height: 380px; background: #22d3ee; bottom: -160px; left: 30%; opacity: .18; }

/* ===== 文字渐变 ===== */
.grad-text {
  background: linear-gradient(135deg, #00d4ff 0%, #7a5cff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ===== 导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 9, 26, 0.65);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand-logo { display: inline-flex; align-items: center; justify-content: center; }
.brand-name { background: linear-gradient(135deg, #fff, #b9c2ff); -webkit-background-clip: text; background-clip: text; color: transparent; letter-spacing: .3px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 14.5px; color: #aab1cf; transition: color .2s; }
.nav-links a:hover { color: #fff; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 12px; font-weight: 600; cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s;
  user-select: none; white-space: nowrap;
}
.btn-sm { padding: 8px 14px; font-size: 14px; }
.btn-lg { padding: 14px 24px; font-size: 16px; }
.btn-primary {
  background: linear-gradient(135deg, #00d4ff, #7a5cff);
  color: #07091a;
  box-shadow: 0 10px 28px -10px rgba(0, 212, 255, 0.55), inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px rgba(122, 92, 255, 0.7), inset 0 1px 0 rgba(255,255,255,0.4); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  color: #e3e6ff;
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.18); }

.btn-size {
  display: inline-flex; align-items: center;
  margin-left: 6px; padding: 2px 8px;
  background: rgba(7, 9, 26, 0.35); color: #07091a;
  border-radius: 999px; font-size: 12px; font-weight: 600;
}

/* ===== Hero ===== */
.hero { position: relative; z-index: 1; padding: 80px 0 60px; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center;
}
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.25);
  color: #7be9ff;
  border-radius: 999px; font-size: 13px;
  margin-bottom: 22px;
}
.badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: #00d4ff;
  box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.2);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(.9); }
}
.title {
  font-size: clamp(38px, 5.6vw, 62px);
  line-height: 1.1; font-weight: 800; margin: 0 0 20px;
  letter-spacing: -.02em;
}
.subtitle { font-size: 17px; color: #aab1cf; max-width: 540px; margin: 0 0 32px; }
.subtitle strong { color: #fff; font-weight: 600; }

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  padding: 22px; border-radius: 16px;
  background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06);
  max-width: 560px;
}
.hero-stats li { display: flex; flex-direction: column; gap: 4px; }
.hero-stats strong { font-size: 22px; color: #fff; background: linear-gradient(135deg, #00d4ff, #7a5cff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats span { font-size: 12.5px; color: #8a92b3; }

/* ===== 手机展示 ===== */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; min-height: 520px; }
.phone {
  width: 290px; height: 580px;
  background: linear-gradient(160deg, #1a1f3a, #0c1029);
  border-radius: 38px; padding: 16px 12px;
  border: 1.5px solid rgba(255,255,255,0.1);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,0.7), inset 0 0 0 1px rgba(255,255,255,0.04);
  position: relative;
}
.phone-notch {
  position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
  width: 90px; height: 22px; background: #07091a; border-radius: 0 0 14px 14px;
}
.phone-screen {
  width: 100%; height: 100%;
  background: #0a0e22;
  border-radius: 28px; padding: 44px 14px 14px;
  display: flex; flex-direction: column; gap: 10px;
  overflow: hidden; position: relative;
}
.status-bar {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: #aab1cf; padding: 0 4px;
}
.signal, .battery { letter-spacing: -2px; }
.app-header {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 12px;
  background: rgba(0, 212, 255, 0.08); border: 1px solid rgba(0, 212, 255, 0.18);
  font-family: ui-monospace, "JetBrains Mono", monospace; font-size: 12px;
}
.app-title { flex: 1; color: #d6f6ff; }
.led { width: 8px; height: 8px; background: #22c55e; border-radius: 50%; box-shadow: 0 0 8px #22c55e; }
.conn-dot { width: 8px; height: 8px; background: #00d4ff; border-radius: 50%; box-shadow: 0 0 8px #00d4ff; animation: pulse 2s infinite; }
.terminal {
  flex: 1; padding: 10px; border-radius: 12px;
  background: #050818; border: 1px solid rgba(255,255,255,0.04);
  font-family: ui-monospace, "JetBrains Mono", "Courier New", monospace;
  font-size: 10.5px; line-height: 1.55; color: #b9c2ff;
  overflow: hidden; position: relative;
}
.terminal div { white-space: nowrap; overflow: hidden; }
.t-rx { color: #22d3ee; }
.t-tx { color: #a78bfa; }
.t-sys { color: #64748b; }
.app-input {
  padding: 10px; border-radius: 12px;
  background: rgba(0, 212, 255, 0.06); border: 1px solid rgba(0, 212, 255, 0.2);
  font-family: ui-monospace, "JetBrains Mono", monospace;
  font-size: 11.5px; color: #7be9ff;
  display: flex; align-items: center; gap: 6px;
}
.prompt { color: #00d4ff; }
.caret { width: 7px; height: 13px; background: #00d4ff; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.float-card {
  position: absolute;
  background: rgba(15, 18, 40, 0.85);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border-radius: 14px;
  padding: 12px 14px;
  display: flex; align-items: center; gap: 10px;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.6);
}
.fc-icon { font-size: 20px; }
.fc-title { font-size: 13px; font-weight: 600; }
.fc-sub { font-size: 11.5px; color: #8a92b3; }
.float-card-1 { top: 40px; left: -10px; animation: floaty 4s ease-in-out infinite; }
.float-card-2 { bottom: 70px; right: -20px; animation: floaty 4s ease-in-out infinite 2s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* 滚动提示 */
.scroll-hint {
  margin-top: 60px; display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: #8a92b3; font-size: 12px; letter-spacing: .3em;
}
.scroll-hint .line { width: 1px; height: 36px; background: linear-gradient(180deg, #00d4ff, transparent); }

/* ===== Section 通用 ===== */
.section { position: relative; z-index: 1; padding: 90px 0; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(122, 92, 255, 0.04), transparent); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.kicker {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  background: rgba(122, 92, 255, 0.1); color: #a78bfa;
  border: 1px solid rgba(122, 92, 255, 0.25);
  font-size: 12px; letter-spacing: .3em; margin-bottom: 18px;
}
.section-title { font-size: clamp(30px, 4vw, 44px); margin: 0 0 14px; font-weight: 800; letter-spacing: -.02em; }
.section-sub { color: #aab1cf; font-size: 16px; margin: 0; }

/* ===== 功能卡片 ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.feature-card {
  position: relative;
  padding: 28px; border-radius: 18px;
  background: linear-gradient(160deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.08);
  transition: transform .2s ease, border-color .2s, box-shadow .2s;
}
.feature-card::before {
  content: ''; position: absolute; inset: 0; border-radius: 18px; padding: 1px;
  background: linear-gradient(135deg, var(--c, #00d4ff), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .25s;
  pointer-events: none;
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.15); box-shadow: 0 30px 60px -30px rgba(0,0,0,0.6); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px; height: 48px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: color-mix(in srgb, var(--c, #00d4ff) 15%, transparent);
  color: var(--c, #00d4ff);
  margin-bottom: 16px;
}
.feature-card h3 { font-size: 19px; margin: 0 0 8px; color: #fff; }
.feature-card p { font-size: 14.5px; color: #aab1cf; margin: 0 0 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags li {
  font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: rgba(255,255,255,0.05); color: #c7cdf0; border: 1px solid rgba(255,255,255,0.08);
}

/* ===== 截图轮播 ===== */
.shots-wrapper {
  position: relative;
  display: flex; align-items: center; gap: 18px;
}
.shots-track {
  display: flex; gap: 22px; overflow-x: auto;
  scroll-snap-type: x mandatory; scroll-behavior: smooth;
  padding: 16px 4px; scrollbar-width: none;
}
.shots-track::-webkit-scrollbar { display: none; }
.shot-card {
  flex: 0 0 calc((100% - 44px) / 3);
  scroll-snap-align: start;
  margin: 0;
}
.shot-frame {
  aspect-ratio: 9 / 19;
  background: linear-gradient(160deg, #1a1f3a, #0c1029);
  border-radius: 26px; padding: 14px 12px;
  border: 1.5px solid rgba(255,255,255,0.08);
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7);
  position: relative;
  transition: transform .25s;
}
.shot-frame:hover { transform: translateY(-6px) rotate(-.5deg); }
.fake-screen {
  height: 100%; background: #0a0e22; border-radius: 20px;
  padding: 12px 10px; display: flex; flex-direction: column; gap: 10px;
}
.fs-head {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: #d6f6ff;
  padding: 6px 8px; background: rgba(0, 212, 255, 0.08); border-radius: 10px;
  border: 1px solid rgba(0, 212, 255, 0.18);
}
.fs-pill {
  font-size: 10px; padding: 2px 6px; border-radius: 999px;
  background: rgba(0, 212, 255, 0.18); color: #7be9ff;
}
.fs-pill.alt { background: rgba(122, 92, 255, 0.18); color: #c4b5fd; }
.fs-pill.blue { background: rgba(34, 211, 238, 0.18); color: #67e8f9; }
.fs-pill.violet { background: rgba(167, 139, 250, 0.18); color: #ddd6fe; }
.fs-term, .fs-list, .fs-table {
  flex: 1; padding: 8px; border-radius: 10px;
  background: #050818; border: 1px solid rgba(255,255,255,0.04);
  font-family: ui-monospace, monospace; font-size: 10.5px; color: #b9c2ff;
  line-height: 1.6;
}
.fs-term div { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fs-table .row { display: flex; justify-content: space-between; padding: 2px 0; }
.fs-table .row.head { color: #64748b; border-bottom: 1px dashed rgba(255,255,255,0.1); padding-bottom: 4px; margin-bottom: 4px; }
.shot-card figcaption {
  margin-top: 16px; text-align: center; color: #aab1cf; font-size: 14px;
}

.shot-btn {
  flex: 0 0 auto;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.shot-btn:hover { background: rgba(255,255,255,0.12); }
.dots {
  display: flex; justify-content: center; gap: 8px; margin-top: 26px;
}
.dots .d {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.18); transition: background .2s, transform .2s;
  cursor: pointer;
}
.dots .d.active { background: #00d4ff; transform: scale(1.4); }

/* ===== 步骤 ===== */
.steps {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  counter-reset: step;
}
.steps li {
  position: relative;
  padding: 28px; border-radius: 18px;
  background: linear-gradient(160deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.08);
}
.step-num {
  display: inline-block;
  font-family: ui-monospace, monospace; font-size: 36px; font-weight: 700;
  background: linear-gradient(135deg, #00d4ff, #7a5cff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 14px; line-height: 1;
}
.steps h3 { font-size: 19px; margin: 0 0 8px; color: #fff; }
.steps p { font-size: 14.5px; color: #aab1cf; margin: 0; }

/* ===== 权限说明 ===== */
.permissions {
  margin-top: 50px; padding: 26px; border-radius: 16px;
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.14);
}
.perm-title { font-size: 16px; margin: 0 0 14px; color: #d6f6ff; }
.perm-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.perm-list li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: #c7cdf0;
}
.perm-list strong { color: #fff; font-weight: 600; }
.perm-list .dot.ok { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 8px rgba(34, 197, 94, 0.5); }

/* ===== CTA ===== */
.section-cta { padding: 40px 0 90px; }
.cta-card {
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
  padding: 50px; border-radius: 24px;
  background:
    radial-gradient(800px 200px at 0% 0%, rgba(0, 212, 255, 0.2), transparent 60%),
    radial-gradient(800px 200px at 100% 100%, rgba(122, 92, 255, 0.2), transparent 60%),
    linear-gradient(160deg, rgba(15, 18, 40, 0.7), rgba(7, 9, 26, 0.7));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,0.6);
}
.cta-text .kicker { margin-bottom: 14px; }
.cta-text h2 { font-size: clamp(28px, 3.6vw, 40px); margin: 0 0 12px; font-weight: 800; }
.cta-text p { color: #aab1cf; margin: 0; max-width: 460px; }
.cta-actions { display: flex; flex-direction: column; gap: 16px; align-items: flex-end; }
.cta-meta { display: flex; gap: 18px; font-size: 13.5px; color: #aab1cf; flex-wrap: wrap; }

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  padding: 18px 22px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  transition: border-color .2s;
}
.faq-item[open] { border-color: rgba(0, 212, 255, 0.35); }
.faq-item summary {
  cursor: pointer; font-weight: 600; font-size: 15.5px; color: #fff;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 22px; color: #00d4ff; transition: transform .25s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin: 12px 0 0; color: #aab1cf; font-size: 14.5px; }

/* ===== SEO 内容区 ===== */
.seo-section {
  padding: 70px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.012);
}
.seo-section .container { max-width: 900px; }
.seo-title { font-size: 22px; color: #fff; margin: 0 0 16px; font-weight: 700; }
.seo-section h3 { font-size: 17px; color: #d6f6ff; margin: 28px 0 10px; font-weight: 600; }
.seo-section p { color: #aab1cf; font-size: 14.5px; line-height: 1.85; margin: 0 0 12px; }
.seo-section strong { color: #c7cdf0; font-weight: 600; }
.seo-section ul { margin: 0 0 12px; padding-left: 0; }
.seo-section ul li {
  position: relative; padding-left: 18px; margin-bottom: 8px;
  color: #aab1cf; font-size: 14.5px; line-height: 1.8;
}
.seo-section ul li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 6px; height: 6px; border-radius: 50%;
  background: linear-gradient(135deg, #00d4ff, #7a5cff);
}
.seo-note {
  margin-top: 24px !important; padding: 16px 20px;
  border-radius: 12px;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.16);
  color: #d6f6ff !important;
}

/* ===== Footer ===== */
.footer { border-top: 1px solid rgba(255,255,255,0.06); padding: 28px 0; color: #8a92b3; font-size: 13.5px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.foot-brand { display: inline-flex; align-items: center; gap: 10px; }
.foot-meta { display: inline-flex; gap: 10px; align-items: center; }
.foot-meta .sep { opacity: .5; }
.foot-meta a { color: #7be9ff; }
.foot-meta a:hover { text-decoration: underline; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero { padding: 60px 0 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { min-height: auto; }
  .features-grid, .steps { grid-template-columns: 1fr 1fr; }
  .perm-list { grid-template-columns: 1fr; }
  .cta-card { flex-direction: column; align-items: flex-start; padding: 36px; }
  .cta-actions { align-items: flex-start; width: 100%; }
  .shot-card { flex-basis: calc((100% - 22px) / 2); }
  .nav-links { display: none; }
}
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .features-grid, .steps { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .phone { width: 240px; height: 480px; }
  .shot-card { flex-basis: 78%; }
  .nav-cta { padding: 8px 12px; font-size: 13px; }
  .section { padding: 70px 0; }
  .float-card { display: none; }
}