:root{
  --bg: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 50%, #0d0d1f 100%);
  --text:#ffffff;
  --muted:#a0a0b0;
  --ios:#0A66FF;
  --android1:#ff7b1e;
  --android2:#ff5722;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glow-primary: rgba(10, 102, 255, 0.4);
  --glow-secondary: rgba(255, 123, 30, 0.4);
}

/* ===== 全局重置 ===== */
*{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

html {
  scroll-behavior: smooth;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background: var(--bg);
  background-attachment: fixed;
  color:var(--text);
  line-height:1.6;
  overflow-x: hidden;
}

/* 动态渐变背景 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(10, 102, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 87, 34, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(138, 43, 226, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
  animation: bgPulse 15s ease-in-out infinite;
}

@keyframes bgPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

/* =========================
   NAVIGATION - 玻璃拟态
========================= */
.top-nav{
  position:sticky;
  top:0;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: var(--glass);
  padding:16px clamp(16px,4vw,60px);
  display:flex;
  justify-content:space-between;
  align-items:center;
  border-bottom:1px solid var(--glass-border);
  z-index:1000;
}

.top-nav strong {
  background: linear-gradient(90deg, #0A66FF, #ff7b1e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 20px;
}

.nav-links{
  display:flex;
  gap:clamp(14px,3vw,28px);
}

.nav-links a{
  text-decoration:none;
  color:var(--text);
  font-size:clamp(12px,2.5vw,14px);
  white-space:nowrap;
  transition: all 0.3s ease;
  padding: 8px 16px;
  border-radius: 20px;
}

.nav-links a:hover{
  background: var(--glass);
  transform: translateY(-2px);
}

/* =========================
   HERO - 视差效果
========================= */
.hero-wrapper{
  position:relative;
  isolation:isolate;
  min-height:90vh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  text-align:center;
}

.bg-video{
  position:absolute;
  width:100%;
  height:100%;
  object-fit:cover;
  z-index:-2;
  filter: brightness(0.6);
}

.hero-overlay{
  position:absolute;
  width:100%;
  height:100%;
  background: linear-gradient(180deg, 
    rgba(15, 15, 35, 0.3) 0%, 
    rgba(15, 15, 35, 0.6) 50%,
    rgba(15, 15, 35, 0.9) 100%);
  z-index:-1;
}

/* Hero Card - 高级玻璃拟态 */
.hero-card{
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding:clamp(30px,5vw,60px);
  border-radius:32px;
  max-width:780px;
  width:95%;
  border: 1px solid var(--glass-border);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.app-icon{
  width: 120px;
  height: 120px;
  border-radius:28px;
  margin-bottom:20px;
  box-shadow: 0 20px 40px rgba(10, 102, 255, 0.3);
  animation: iconGlow 3s ease-in-out infinite;
}

@keyframes iconGlow {
  0%, 100% { box-shadow: 0 20px 40px rgba(10, 102, 255, 0.3); }
  50% { box-shadow: 0 25px 50px rgba(10, 102, 255, 0.5), 0 0 30px rgba(10, 102, 255, 0.2); }
}

.hero-card h1{
  font-size:clamp(24px,4vw,34px);
  margin-bottom:12px;
  background: linear-gradient(90deg, #ffffff, #a0c4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle{
  color: var(--muted);
  font-size:18px;
  margin-bottom:10px;
}

.rating{
  font-weight:600;
  color:#ffd700;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

/* =========================
   DOWNLOAD COUNTER
========================= */
.download-count{
  margin-top:18px;
  display:flex;
  justify-content:center;
  align-items:baseline;
  gap:8px;
  flex-wrap:wrap;
}

#downloadCounter{
  font-size:36px;
  font-weight:700;
  letter-spacing:0.5px;
  background: linear-gradient(90deg, #0A66FF, #00d4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.download-label{
  font-size:16px;
  color: var(--muted);
}

.live-indicator{
  display:flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:#16a34a;
  font-weight:600;
}

.live-indicator .dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:#16a34a;
  box-shadow: 0 0 10px #16a34a;
  animation:pulse 1.8s infinite;
}

@keyframes pulse{
  0%{transform:scale(1);opacity:1; box-shadow: 0 0 10px #16a34a;}
  50%{transform:scale(1.6);opacity:.4; box-shadow: 0 0 20px #16a34a;}
  100%{transform:scale(1);opacity:1; box-shadow: 0 0 10px #16a34a;}
}

/* =========================
   BUTTONS - 动态渐变 + 光效
========================= */
.buttons{
  margin-top:28px;
  display:flex;
  gap:20px;
  justify-content:center;
  flex-wrap:wrap;
}

.btn{
  padding:18px 38px;
  border:none;
  border-radius:50px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  color:#fff;
  min-width:220px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover{
  transform: translateY(-4px) scale(1.02);
}

.btn-ios{
  background: linear-gradient(135deg, #0A66FF, #0052cc);
  box-shadow: 0 10px 30px var(--glow-primary), 0 0 0 1px rgba(10, 102, 255, 0.3);
}

.btn-ios:hover {
  box-shadow: 0 15px 40px var(--glow-primary), 0 0 30px rgba(10, 102, 255, 0.4);
}

.btn-android{
  background: linear-gradient(135deg, var(--android1), var(--android2));
  box-shadow: 0 10px 30px var(--glow-secondary), 0 0 0 1px rgba(255, 87, 34, 0.3);
}

.btn-android:hover {
  box-shadow: 0 15px 40px var(--glow-secondary), 0 0 30px rgba(255, 87, 34, 0.4);
}

/* =========================
   META BAR - 玻璃拟态卡片
========================= */
.meta-bar-section{
  padding:50px 20px 30px;
}

.meta-bar{
  max-width:1100px;
  margin:auto;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:20px;
  text-align:center;
}

.meta-item{
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding:24px;
  border-radius:22px;
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.meta-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  border-color: rgba(10, 102, 255, 0.3);
}

.meta-icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.meta-value{
  font-size:15px;
  font-weight:700;
  color: var(--text);
}

.meta-label{
  font-size:13px;
  color: var(--muted);
  margin-top:6px;
}

/* =========================
   SECTION SPACING
========================= */
.section{
  max-width:1100px;
  margin:60px auto;
  padding:0 20px;
}

.section h2, .section h3{
  margin-bottom:26px;
  font-size:28px;
  background: linear-gradient(90deg, #ffffff, #a0c4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* =========================
   SCREENSHOTS - 3D手机模型 + 灯箱
========================= */
.screens-slider{
  display:flex;
  gap:25px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding: 30px 10px;
}

.screens-slider::-webkit-scrollbar {
  height: 8px;
}

.screens-slider::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, #0A66FF, #ff7b1e);
  border-radius: 10px;
}

/* 3D 手机模型框架 */
.phone-mockup {
  position: relative;
  flex-shrink: 0;
  scroll-snap-align: start;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  perspective: 1000px;
}

.phone-mockup:hover {
  transform: translateY(-15px) rotateY(-5deg);
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: -15px;
  left: -15px;
  right: -15px;
  bottom: -15px;
  background: linear-gradient(135deg, rgba(10, 102, 255, 0.3), rgba(255, 87, 34, 0.3));
  border-radius: 45px;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.phone-mockup:hover::before {
  opacity: 1;
}

.phone-mockup img {
  height: 520px;
  width: auto;
  border-radius: 35px;
  box-shadow: 
    0 25px 60px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border: 3px solid rgba(255, 255, 255, 0.1);
}

/* 灯箱 */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox img {
  max-height: 90vh;
  max-width: 90vw;
  border-radius: 20px;
  box-shadow: 0 30px 80px rgba(10, 102, 255, 0.3);
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: white;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.lightbox-close:hover {
  background: rgba(255, 87, 34, 0.3);
  transform: rotate(90deg);
}

/* =========================
   INFO GRID - 玻璃拟态
========================= */
.info-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:24px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding:40px;
  border-radius:30px;
  border: 1px solid var(--glass-border);
}

.info-grid div {
  color: var(--text);
}

.info-grid strong {
  color: var(--muted);
  font-weight: 400;
  font-size: 13px;
}

.info-link {
  color: #0A66FF;
  text-decoration: none;
  transition: all 0.3s ease;
}

.info-link:hover {
  color: #00d4ff;
  text-shadow: 0 0 10px rgba(10, 102, 255, 0.5);
}

/* =========================
   FAQ - 玻璃拟态手风琴
========================= */
.faq-item{
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding:22px 24px;
  border-radius:22px;
  margin-bottom:14px;
  border: 1px solid var(--glass-border);
  cursor:pointer;
  transition: all 0.3s ease;
}

.faq-item:hover{
  transform: translateX(5px);
  border-color: rgba(10, 102, 255, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.faq-item h2{
  font-size:16px;
  font-weight:600;
  color: var(--text);
  background: none;
  -webkit-text-fill-color: var(--text);
}

.faq-answer{
  display:none;
  margin-top:10px;
  font-size:14px;
  color: var(--muted);
  line-height:1.6;
}

.faq-item.active {
  border-color: rgba(10, 102, 255, 0.5);
  box-shadow: 0 10px 30px rgba(10, 102, 255, 0.1);
}

.faq-item.active .faq-answer{
  display:block;
}

.faq-item[open] .faq-answer{
  display:block;
}

.faq-item summary{
  cursor:pointer;
  font-weight:600;
  list-style-position:outside;
}

/* =========================
   FOOTER
========================= */
.footer{
  margin-top:80px;
  padding:40px 20px;
  text-align:center;
  color: var(--muted);
  font-size:14px;
  background: var(--glass);
  border-top: 1px solid var(--glass-border);
}

/* =========================
   MOBILE OPTIMIZATION
========================= */
@media (max-width:768px){
  .section{
    margin:40px auto;
  }

  .hero-wrapper{
    min-height:80vh;
  }

  .phone-mockup img {
    height: 400px;
  }

  .meta-bar{
    display:flex;
    overflow-x:auto;
    gap:18px;
    scroll-snap-type:x mandatory;
  }

  .meta-item{
    min-width:150px;
    scroll-snap-align:start;
  }

  .buttons{
    flex-direction:column;
    width:100%;
  }

  .btn{
    width:100%;
  }
}


/* ===== SEO ENTITY BOOST ===== */

.seo-entity-section{
  margin-top:70px;
}

.entity-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:22px;
  margin-top:30px;
}

.entity-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:24px;
  padding:24px;
  backdrop-filter:blur(10px);
  transition:.3s ease;
}

.entity-card:hover{
  transform:translateY(-4px);
  border-color:rgba(10,102,255,.35);
}

.entity-card h3{
  font-size:20px;
  margin-bottom:12px;
  color:#fff;
}

.entity-card p{
  font-size:14px;
  line-height:1.7;
  color:#b8b8c7;
}

/* ===== Reviews Section - 玻璃拟态 ===== */
.reviews-section{
  margin-top:60px;
}

.ratings-overview{
  display:flex;
  align-items:center;
  gap:40px;
  flex-wrap:wrap;
  margin-bottom:40px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding: 30px;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
}

.rating-score{
  text-align:center;
}

.score-number{
  font-size:64px;
  font-weight:700;
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.score-text{
  color: var(--muted);
  font-size:14px;
}

.rating-bars{
  flex:1;
  width:100%;
  max-width:420px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.bar-row span {
  width: 20px;
  color: var(--muted);
}

.bar{
  flex:1;
  height:8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius:6px;
  overflow:hidden;
  min-width:120px;
}

.bar div{
  height:100%;
  background: linear-gradient(90deg, #ffd700, #ff8c00);
  border-radius:6px;
}

.rating-total{
  font-size:16px;
  font-weight:600;
  color: var(--muted);
}

.review-slider{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding: 20px 10px;
}

.review-card{
  min-width:320px;
  max-width:360px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding:24px;
  border-radius:24px;
  border: 1px solid var(--glass-border);
  scroll-snap-align:start;
  transition: all 0.3s ease;
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 215, 0, 0.3);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.review-card h3{
  font-size:16px;
  margin-bottom:8px;
  color: var(--text);
  background: none;
  -webkit-text-fill-color: var(--text);
}

.review-meta{
  font-size:13px;
  color: #ffd700;
  margin-bottom:10px;
}

.review-card p{
  font-size:14px;
  color: var(--muted);
  line-height:1.6;
}

/* ===== App Description ===== */
.app-description{
  max-width:900px;
  margin:80px auto;
}

.app-description h2{
  font-size:24px;
  margin-bottom:20px;
}

.desc-short p{
  font-size:16px;
  color: var(--muted);
  line-height:1.6;
}

.desc-full{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
  margin-top:15px;
}

.desc-full h3{
  font-size:18px;
  margin-top:20px;
  color: var(--text);
  background: none;
  -webkit-text-fill-color: var(--text);
}

.desc-full p{
  font-size:15px;
  color: var(--muted);
  margin-top:8px;
  line-height:1.6;
}

.desc-toggle{
  margin-top:15px;
  background: linear-gradient(135deg, #0A66FF, #0052cc);
  border:none;
  color: white;
  font-weight:600;
  cursor:pointer;
  font-size:15px;
  padding: 12px 24px;
  border-radius: 25px;
  transition: all 0.3s ease;
}

.desc-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(10, 102, 255, 0.4);
}

/* ===== Privacy Cards ===== */
.privacy-card{
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding:26px;
  border-radius:24px;
  margin-bottom:18px;
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.privacy-card:hover{
  transform: translateY(-3px);
  border-color: rgba(10, 102, 255, 0.3);
}

.privacy-card strong{
  display:block;
  font-size:18px;
  margin-bottom:10px;
  color: var(--text);
}

.privacy-card p{
  font-size:14px;
  color: var(--muted);
  line-height:1.6;
}

/* PWA Mini Button */
.pwa-mini-btn{

position:fixed !important;

left:14px !important;

bottom:140px !important;

top:auto !important;

width:56px;
height:56px;

border-radius:50%;

background:linear-gradient(135deg,#ff7a2d,#ff4f2d);

display:flex;
align-items:center;
justify-content:center;

cursor:pointer;

box-shadow:0 10px 28px rgba(255,90,44,.45);

z-index:999999 !important;

transition:all .3s ease;

animation:pwaFloat 2s ease-in-out infinite;

/* 强制脱离父级影响 */
will-change:transform;

}

/* SVG */
.pwa-mini-btn svg{

pointer-events:none;

}

/* Hover */
.pwa-mini-btn:hover{

transform:scale(1.08);

box-shadow:0 16px 36px rgba(255,90,44,.55);

}

/* 动画 */
@keyframes pwaFloat{

0%{
translate:0 0;
}

50%{
translate:0 -6px;
}

100%{
translate:0 0;
}

}

/* iOS Guide */
.ios-guide{
  position:fixed;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  background: var(--glass);
  backdrop-filter: blur(20px);
  padding:14px 18px;
  border-radius:18px;
  border: 1px solid var(--glass-border);
  font-size:14px;
  display:none;
  align-items:center;
  gap:10px;
  z-index:10000;
  color: var(--text);
}

#closeIosGuide{
  margin-left:10px;
  cursor:pointer;
  opacity:.6;
}

.ios-install-link{
  color:#0A66FF;
  font-weight:600;
  text-decoration:none;
  margin-left:6px;
}

.ios-install-link:hover{
  text-decoration:underline;
  text-shadow: 0 0 10px rgba(10, 102, 255, 0.5);
}

/* 视差滚动效果 */
.parallax-section {
  position: relative;
  overflow: hidden;
}

.parallax-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(10, 102, 255, 0.1) 0%, transparent 70%);
  transform: translateY(var(--scroll-offset, 0));
  pointer-events: none;
}

@media (max-width:768px){
  .ratings-overview{
    flex-direction:column;
    align-items:flex-start;
    gap:20px;
  }

  .score-number{
    font-size:48px;
  }

  .review-card{
    min-width:280px;
  }

  .rating-bars{
    width:100%;
    margin-top:15px;
  }

  .bar-row{
    width:100%;
  }
}

/* Accessibility and motion preferences */
.hero-seo-text{
  max-width:640px;
  margin:0 auto 12px;
  color:#d7d7e2;
  font-size:clamp(14px,2vw,17px);
}

.section ol,
.section ul{
  padding-left:24px;
}

.section a:focus-visible,
.btn:focus-visible,
.faq-item:focus-visible,
.lightbox-close:focus-visible{
  outline:3px solid #ffd54a;
  outline-offset:4px;
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}