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rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.hover\:border-crimson-400:hover{--tw-border-opacity:1;border-color:rgb(255 51 51/var(--tw-border-opacity,1))}.hover\:border-crimson-400\/30:hover{border-color:rgba(255,51,51,.3)}.hover\:border-crimson-400\/50:hover{border-color:rgba(255,51,51,.5)}.hover\:bg-crimson-500:hover{--tw-bg-opacity:1;background-color:rgb(230 0 0/var(--tw-bg-opacity,1))}.hover\:bg-crimson-600:hover{--tw-bg-opacity:1;background-color:rgb(179 0 0/var(--tw-bg-opacity,1))}.hover\:bg-gold-400:hover{--tw-bg-opacity:1;background-color:rgb(255 194 51/var(--tw-bg-opacity,1))}.hover\:bg-white\/20:hover{background-color:hsla(0,0%,100%,.2)}.hover\:text-crimson-400:hover{--tw-text-opacity:1;color:rgb(255 51 51/var(--tw-text-opacity,1))}.hover\:text-crimson-500:hover{--tw-text-opacity:1;color:rgb(230 0 0/var(--tw-text-opacity,1))}.hover\:text-white:hover{--tw-text-opacity:1;color:rgb(255 255 255/var(--tw-text-opacity,1))}.hover\:shadow-2xl:hover{--tw-shadow:0 25px 50px -12px rgba(0,0,0,.25);--tw-shadow-colored:0 25px 50px -12px var(--tw-shadow-color)}.hover\:shadow-2xl:hover,.hover\:shadow-lg:hover{box-shadow:var(--tw-ring-offset-shadow,0 0 #0000),var(--tw-ring-shadow,0 0 #0000),var(--tw-shadow)}.hover\:shadow-lg:hover{--tw-shadow:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -4px rgba(0,0,0,.1);--tw-shadow-colored:0 10px 15px -3px var(--tw-shadow-color),0 4px 6px -4px var(--tw-shadow-color)}.focus\:border-crimson-500:focus{--tw-border-opacity:1;border-color:rgb(230 0 0/var(--tw-border-opacity,1))}.focus\:outline-none:focus{outline:2px solid transparent;outline-offset:2px}.group:hover .group-hover\:scale-105{--tw-scale-x:1.05;--tw-scale-y:1.05}.group:hover .group-hover\:scale-105,.group:hover .group-hover\:scale-110{transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.group:hover .group-hover\:scale-110{--tw-scale-x:1.1;--tw-scale-y:1.1}.group:hover .group-hover\:text-crimson-500{--tw-text-opacity:1;color:rgb(230 0 0/var(--tw-text-opacity,1))}@media (min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:768px){.md\:left-8{left:2rem}.md\:right-12{right:3rem}.md\:right-8{right:2rem}.md\:col-span-2{grid-column:span 2/span 2}.md\:col-span-4{grid-column:span 4/span 4}.md\:block{display:block}.md\:flex{display:flex}.md\:inline-flex{display:inline-flex}.md\:grid-cols-12{grid-template-columns:repeat(12,minmax(0,1fr))}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.md\:p-10{padding:2.5rem}.md\:py-\[160px\]{padding-top:160px;padding-bottom:160px}.md\:text-2xl{font-size:1.5rem;line-height:2rem}.md\:text-4xl{font-size:2.25rem;line-height:2.5rem}.md\:text-5xl{font-size:3rem;line-height:1}.md\:text-6xl{font-size:3.75rem;line-height:1}.md\:text-lg{font-size:1.125rem;line-height:1.75rem}.md\:text-xl{font-size:1.25rem;line-height:1.75rem}}@media (min-width:1024px){.lg\:col-span-2{grid-column:span 2/span 2}.lg\:col-span-5{grid-column:span 5/span 5}.lg\:col-span-7{grid-column:span 7/span 7}.lg\:row-span-2{grid-row:span 2/span 2}.lg\:flex{display:flex}.lg\:hidden{display:none}.lg\:h-96{height:24rem}.lg\:grid-cols-12{grid-template-columns:repeat(12,minmax(0,1fr))}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}
/* === site custom === */
html { scroll-behavior: smooth; }
  body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; color: #e2e8f0; background: #000000; }
  /* ==== Hero 轮播 ==== */
  .hero-wrap { position: relative; overflow: hidden; }
  .hero-slide {
    position: absolute; top: 0; right: 0; bottom: 0; left: 0;
    opacity: 0; visibility: hidden;
    transition: opacity 1s ease, visibility 1s ease;
  }
  .hero-slide.active { opacity: 1; visibility: visible; z-index: 2; }
  .hero-slide::before {
    content:''; position:absolute; top:0; right:0; bottom:0; left:0;
    background-size: cover; background-position: center;
    transform: scale(1.08);
    opacity: .25;
  }
  .hero-slide.active::before {
    animation: kenburns 8s ease-out forwards;
  }
  @keyframes kenburns {
    from { transform: scale(1.08); }
    to   { transform: scale(1.18); }
  }
  /* .hero-slide-1 { background: linear-gradient(120deg, #000 0%, #1a0000 20%, #121212 100%); }
  .hero-slide-1::before { background-image: url('../assets/bb1.jpg'); opacity: 0.7; }
  .hero-slide-2 { background: linear-gradient(120deg, #000 0%, #140000 25%, #0d0d0d 100%); }
  .hero-slide-2::before { background-image: url('../assets/bb2.jpg'); opacity: 0.7; }
  .hero-slide-3 { background: linear-gradient(120deg, #000 0%, #8b0000 25%, #121212 100%); }
  .hero-slide-3::before { background-image: url('../assets/bb5.jpg'); opacity: 0.7; }
  .hero-slide-4 { background: linear-gradient(120deg, #000 0%, #1a0000 40%, #121212 100%); }
  .hero-slide-4::before { background-image: url('../assets/bb6.jpg'); opacity: 0.7; }
  .hero-slide-5 { background: linear-gradient(120deg, #000 0%, #140000 35%, #121212 100%); }
  .hero-slide-5::before { background-image: url('../assets/bb7.jpg'); opacity: 0.7; } */

  .hero-slide-1 { background: linear-gradient(120deg, #000 0%, #1a0000 20%, #121212 100%); }
  .hero-slide-1::before { background-image: url('/assets/bb1.jpg'); opacity: 0.7; }
  .hero-slide-2 { background: linear-gradient(120deg, #000 0%, #140000 25%, #0d0d0d 100%); }
  .hero-slide-2::before { background-image: url('/assets/bb2.jpg'); opacity: 0.7; }
  .hero-slide-3 { background: linear-gradient(120deg, #000 0%, #8b0000 25%, #121212 100%); }
  .hero-slide-3::before { background-image: url('/assets/bb5.jpg'); opacity: 0.7; }
  .hero-slide-4 { background: linear-gradient(120deg, #000 0%, #1a0000 40%, #121212 100%); }
  .hero-slide-4::before { background-image: url('/assets/bb6.jpg'); opacity: 0.7; }
  .hero-slide-5 { background: linear-gradient(120deg, #000 0%, #140000 35%, #121212 100%); }
  .hero-slide-5::before { background-image: url('/assets/bb7.jpg'); opacity: 0.7; }

  
  .hero-slide::after {
    content:''; position:absolute; top:0; right:0; bottom:0; left:0;
    background: radial-gradient(circle at 80% 30%, rgba(230,0,0,0.18), transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(139,0,0,0.12), transparent 50%);
  }
  /* 入场动画 */
  .anim-fade-up { opacity: 0; transform: translateY(30px); }
  .hero-slide.active .anim-fade-up { animation: fadeUp .9s cubic-bezier(.16,1,.3,1) forwards; }
  .hero-slide.active .anim-fade-up:nth-child(1) { animation-delay: .15s }
  .hero-slide.active .anim-fade-up:nth-child(2) { animation-delay: .3s }
  .hero-slide.active .anim-fade-up:nth-child(3) { animation-delay: .45s }
  .hero-slide.active .anim-fade-up:nth-child(4) { animation-delay: .6s }
  .hero-slide.active .anim-fade-up:nth-child(5) { animation-delay: .75s }
  .hero-slide.active .anim-fade-up:nth-child(6) { animation-delay: .9s }
  @keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
  }
  /* 指示器进度条 */
  .indicator { position: relative; width: 50px; height: 3px; background: rgba(255,255,255,.2); border-radius: 2px; overflow: hidden; cursor: pointer; transition: width .3s; }
  .indicator.active { width: 80px; }
  .indicator-bar { position: absolute; left:0; top:0; bottom:0; width:0; background:#e60000; border-radius:2px; box-shadow: 0 0 8px rgba(230,0,0,0.6); }
  .indicator.active .indicator-bar { animation: progress 6s linear forwards; }
  @keyframes progress { from { width: 0 } to { width: 100% } }
  /* 浮动粒子 */
  .particle {
    position: absolute; border-radius: 50%;
    background: radial-gradient(circle, rgba(230,0,0,.55), transparent 70%);
    pointer-events: none;
    animation: float linear infinite;
  }
  @keyframes float {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) translateX(40px); opacity: 0; }
  }
  .site-logo { width: 100%; height: 100%; object-fit: contain; display: block; }
  .site-logo-bar { height: 2.5rem; width: auto; max-width: 220px; object-fit: contain; display: block; }
  .site-logo-footer { height: 3rem; width: auto; max-width: 240px; object-fit: contain; display: block; }
  @media (min-width: 768px) { .site-logo-bar { height: 3rem; max-width: 280px; } .site-logo-footer { height: 3.5rem; } }
  @keyframes logoPulse {
    0%,100% { transform: scale(1) rotate(-5deg); }
    50% { transform: scale(1.15) rotate(5deg); }
  }
  /* 滚动入场 reveal */
  .reveal { opacity: 0; transform: translateY(40px); transition: all .9s cubic-bezier(.16,1,.3,1); }
  .reveal.show { opacity: 1; transform: translateY(0); }
  /* 商品 Tab */
  .product-tab.tab-active { color: #ff3333; }
  .product-tab.tab-active::after {
    content:''; position:absolute; left:0; right:0; bottom:-1px; height:3px;
    background: linear-gradient(90deg, #e60000, #ff3333); border-radius: 2px 2px 0 0;
    box-shadow: 0 0 10px rgba(230,0,0,0.5);
  }
  .product-card { transition: all .35s cubic-bezier(.4,0,.2,1); }
  .product-card.hide { display: none; }
  .glass {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.15);
  }
  #brand .brand-video-overlay {
    background: linear-gradient(105deg, rgba(0, 8, 24, 0.72) 0%, rgba(0, 16, 40, 0.45) 55%, rgba(0, 8, 20, 0.35) 100%);
  }
  #brand .brand-glass-card {
    background: linear-gradient(145deg, rgba(0, 14, 36, 0.88) 0%, rgba(0, 28, 56, 0.82) 100%);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.22);
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }
  #brand .brand-glass-card h3 {
    color: #fff;
    font-size: 1.125rem;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.85);
  }
  #brand .brand-glass-card-desc {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.94);
    line-height: 1.75;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.8);
  }
  #brand .brand-glass-card--compact {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.94);
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.8);
  }
  #brand .brand-glass-card--compact .text-gold-400 {
    color: #ffd966;
    text-shadow: 0 0 12px rgba(255, 184, 0, 0.35), 0 1px 6px rgba(0, 0, 0, 0.75);
  }
  .card-hover { transition: all .35s cubic-bezier(.4,0,.2,1); }
  .card-hover:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -12px rgba(0,0,0,0.6); }
  .num-grad {
    background: linear-gradient(135deg, #ff3333 0%, #e60000 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 12px rgba(230,0,0,0.35));
  }
  .news-img { transition: transform .6s cubic-bezier(.4,0,.2,1); }
  .news-card:hover .news-img { transform: scale(1.08); }
  .dot { width:8px; height:8px; border-radius:50%; background:#e60000; box-shadow:0 0 0 4px rgba(230,0,0,.3), 0 0 12px rgba(230,0,0,.5); }
  .map-bg video {
    object-fit: cover;
  }
  .brand-video-bg { position: relative; overflow: hidden; }
  .brand-video-bg video {
    position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%;
    object-fit: cover; z-index: 0;
  }
  .brand-video-bg .brand-video-overlay {
    position: absolute; top: 0; right: 0; bottom: 0; left: 0; z-index: 1;
    /* background: linear-gradient(120deg, rgba(0,0,0,.9) 0%, rgba(139,0,0,.35) 50%, rgba(0,0,0,.92) 100%); */
  }
  .brand-video-overlay--red-tint {
    /* background:
      linear-gradient(120deg, rgba(0,0,0,.5) 0%, rgba(80,0,0,.45) 50%, rgba(0,0,0,.55) 100%),
      rgba(230, 0, 0, 0.32); */
  }
  .brand-video-bg .brand-video-content { position: relative; z-index: 2; }
  .brand-video-bg--align-bottom video {
    object-fit: cover;
    object-position: center bottom;
  }
  .services-section-title {
    font-size: 2.5rem;
    font-size: clamp(3rem, 5vw, 3.3rem);
    font-weight: 800;
    letter-spacing: 0.1em;
    color: #fff;
    text-shadow:
      0 0 20px rgba(230, 0, 0, 0.85),
      0 0 40px rgba(230, 0, 0, 0.5),
      0 2px 12px rgba(0, 0, 0, 0.85);
  }
  .services-section-desc {
    font-size: 1.0625rem;
    font-size: clamp(1.0625rem, 2.5vw, 1.3125rem);
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.8;
    text-shadow:
      0 0 16px rgba(230, 0, 0, 0.8),
      0 0 32px rgba(230, 0, 0, 0.45),
      0 1px 10px rgba(0, 0, 0, 0.75);
  }
  .contact-section-desc {
    font-size: 1.0625rem;
    font-size: clamp(1.0625rem, 2.5vw, 1.3125rem);
    color: rgba(255, 255, 255, 0.94);
    line-height: 1.8;
    text-shadow:
      0 0 18px rgba(56, 189, 248, 0.9),
      0 0 36px rgba(14, 165, 233, 0.6),
      0 0 52px rgba(59, 130, 246, 0.4),
      0 1px 10px rgba(0, 0, 0, 0.75);
  }
  .brand-video-bg--video-center {
    background: #000;
  }
  .brand-video-bg--video-center video {
    object-fit: cover;
    object-position: center center;
  }
  #contact.brand-video-bg video {
    object-fit: cover;
    object-position: center top;
    height: 112%;
    top: -6%;
    bottom: auto;
    left: 0;
    right: 0;
    width: 100%;
    transform: translateY(-50px);
  }
  .scroll-down { animation: bounce 2s infinite; }
  @keyframes bounce {
    0%,100% { transform: translateY(0); opacity: .8 }
    50% { transform: translateY(8px); opacity: 1 }
  }
  .marquee-track { animation: marquee 30s linear infinite; }
  @keyframes marquee { from { transform: translateX(0) } to { transform: translateX(-50%) } }
  .nav-link { position: relative; }
  .nav-link::after {
    content:''; position:absolute; left:50%; bottom:-6px; width:0; height:2px;
    background:#e60000; transition:all .3s; transform:translateX(-50%);
    box-shadow: 0 0 8px rgba(230,0,0,0.4);
  }
  .nav-link:hover::after { width:100%; }
  /* 顶部透明导航：白字 */
  #navbar.nav-at-top #navbar-bg {
    background-color: rgba(255,255,255,0.08);
    border-bottom-color: rgba(255,255,255,0.12);
  }
  #navbar:not(.nav-at-top) #navbar-bg {
    background-color: rgba(0,0,0,0.96);
    border-bottom-color: rgba(230,0,0,0.2);
  }
  #navbar:not(.nav-at-top) .navbar-brand-main { color: #fff; }
  #navbar:not(.nav-at-top) .navbar-brand-sub { color: rgba(255,255,255,0.5); }
  #navbar:not(.nav-at-top) .navbar-nav .nav-link { color: rgba(255,255,255,0.75); }
  #navbar:not(.nav-at-top) .navbar-nav .nav-link:hover { color: #fff; }
  #navbar:not(.nav-at-top) .navbar-nav .nav-link.nav-active { color: #ff3333; }
  #navbar:not(.nav-at-top) .navbar-lang-btn { color: rgba(255,255,255,0.6); }
  #navbar:not(.nav-at-top) .navbar-menu-btn { color: #fff; }
  #navbar.nav-at-top .navbar-brand-main { color: #fff; }
  #navbar.nav-at-top .navbar-brand-sub { color: rgba(255,255,255,0.65); }
  #navbar.nav-at-top .navbar-nav .nav-link { color: rgba(255,255,255,0.88); }
  #navbar.nav-at-top .navbar-nav .nav-link:hover { color: #fff; }
  #navbar.nav-at-top .navbar-nav .nav-link.nav-active { color: #ff3333; }
  #navbar.nav-at-top .navbar-lang-btn { color: rgba(255,255,255,0.75); }
  #navbar.nav-at-top .navbar-lang-btn:hover { background: rgba(255,255,255,0.12); }
  #navbar.nav-at-top .navbar-menu-btn { color: #fff; }
  /* 黑红系全局覆盖 */
  .black-red-theme .section-light { background: #0a0a0a; }
  .black-red-theme .section-alt { background: linear-gradient(to bottom, #000000, #140000); }
  .black-red-theme .card-dark { background: #0d0d0d; border-color: rgba(230,0,0,0.12); }
  .black-red-theme .card-dark:hover { background: #121212; border-color: rgba(230,0,0,0.35); box-shadow: 0 8px 32px rgba(230,0,0,0.08); }
  .black-red-theme .text-heading { color: #fff; }
  .black-red-theme .text-muted { color: #94a3b8; }
  .black-red-theme .border-dark { border-color: rgba(255,255,255,0.08); }
  .black-red-theme .product-tab { color: #94a3b8; }
  .black-red-theme .product-tab:hover { color: #ff3333; }
  .black-red-theme .marquee-partners { color: #4a2020; }
  .btn-glow:hover { box-shadow: 0 0 24px rgba(230,0,0,0.45); }
  .timeline-line { position: relative; padding-left: 1.75rem; border-left: 2px solid rgba(230,0,0,0.35); }
  .timeline-line::before {
    content: ''; position: absolute; left: -6px; top: 0.35rem;
    width: 10px; height: 10px; border-radius: 50%; background: #e60000;
    box-shadow: 0 0 0 4px rgba(230,0,0,0.2);
  }
  /* 发展历程：交替时间轴 */
  .history-wrap { position: relative; }
  .history-wrap::before {
    content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
    width: 2px; background: linear-gradient(to bottom, transparent, rgba(230,0,0,0.5) 12%, rgba(230,0,0,0.5) 88%, transparent);
    transform: translateX(-50%);
  }
  .history-item { position: relative; }
  .history-item .dot-marker {
    position: absolute; top: 1.25rem; width: 14px; height: 14px; border-radius: 50%;
    background: #e60000; box-shadow: 0 0 0 5px rgba(230,0,0,0.18), 0 0 18px rgba(230,0,0,0.6);
    z-index: 2;
  }
  @media (min-width: 768px) {
    .history-item.left  { padding-right: 3.5rem; text-align: right; }
    .history-item.right { padding-left: 3.5rem; }
    .history-item.left  .dot-marker { right: -7px; }
    .history-item.right .dot-marker { left: -7px; }
  }
  @media (max-width: 767px) {
    .history-wrap::before { left: 1rem; }
    .history-item { padding-left: 2.5rem; }
    .history-item .dot-marker { left: calc(1rem - 6px); }
  }
  /* IP 冲浪 + H5 浪花 */
  .ip-surf-stage {
    position: relative;
    width: 220px;
    height: 88px;
    margin-bottom: 0.25rem;
    overflow: visible;
  }
  .ip-surf-canvas {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 48%;
    z-index: 0;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
  }
  .ip-surf-track {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    z-index: 2;
    pointer-events: none;
  }
  .ip-surf-splashes {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 8px;
    height: 36px;
    z-index: 1;
    pointer-events: none;
    overflow: visible;
  }
  .ip-splash {
    position: absolute;
    bottom: 0;
    border-radius: 50% 50% 45% 55%;
    background: rgba(255,255,255,0.55);
    box-shadow: 0 0 6px rgba(191,219,254,0.5);
    animation: ipSplashPop 6.5s ease-in-out infinite;
    opacity: 0;
  }
  .ip-splash:nth-child(1) { left: 5%;  width: 7px; height: 5px; animation-delay: 0s; }
  .ip-splash:nth-child(2) { left: 20%; width: 5px; height: 4px; animation-delay: 0.5s; }
  .ip-splash:nth-child(3) { left: 38%; width: 8px; height: 5px; animation-delay: 1s; }
  .ip-splash:nth-child(4) { left: 55%; width: 6px; height: 4px; animation-delay: 1.5s; }
  .ip-splash:nth-child(5) { left: 72%; width: 9px; height: 6px; animation-delay: 2s; }
  .ip-splash:nth-child(6) { left: 88%; width: 5px; height: 4px; animation-delay: 2.5s; }
  .ip-surf-char {
    position: absolute;
    left: 0;
    bottom: 2px;
    height: 76px;
    width: auto;
    max-width: none;
    display: block;
    transform-origin: 55% 85%;
    animation: ipPaddleGlide 4.2s ease-in-out infinite;
    filter: drop-shadow(0 10px 18px rgba(0,0,0,0.45));
    will-change: left, transform;
  }
  @media (min-width: 768px) {
    .ip-surf-stage { width: 260px; height: 96px; }
    .ip-surf-char { height: 88px; }
  }
  .ip-surf-stage--cta {
    width: 92vw;
    max-width: 620px;
    height: 148px;
    margin: 0 auto;
    perspective: 900px;
  }
  .ip-surf-stage--cta .ip-surf-track {
    transform-style: preserve-3d;
  }
  .ip-surf-actor {
    position: absolute;
    left: 0;
    bottom: 4px;
    transform-origin: 55% 88%;
    animation: ipSurfPath3D 6.5s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
    will-change: left, transform, filter;
    z-index: 2;
  }
  .ip-surf-actor::after {
    content: '';
    position: absolute;
    left: 10%;
    right: 10%;
    bottom: -6px;
    height: 18px;
    background: radial-gradient(ellipse, rgba(0,0,0,.65) 0%, rgba(0,0,0,.25) 45%, transparent 72%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
  }
  .ip-surf-stage--cta .ip-surf-char {
    position: relative;
    z-index: 1;
    display: block;
    height: 108px;
    width: auto;
    animation: none;
    filter: none;
  }
  @media (min-width: 768px) {
    .ip-surf-stage--cta { width: 90vw; max-width: 680px; height: 180px; }
    .ip-surf-stage--cta .ip-surf-char { height: 128px; }
  }
  @keyframes ipPaddleGlide {
    0%, 100% { left: 0; transform: translateY(4px) rotate(-5deg) scale(1); }
    25%      { left: 25%; transform: translateY(-6px) rotate(4deg) scale(1); }
    50%      { left: 50%; transform: translateY(2px) rotate(-3deg) scale(1); }
    75%      { left: calc(100% - 108px); transform: translateY(-5px) rotate(5deg) scale(1); }
  }
  /* CTA 冲浪：S 形轨迹 + Z 轴景深 + 缩放远近（幅度加大） */
  @keyframes ipSurfPath3D {
    0% {
      left: 0;
      transform: translate3d(0, 18px, -140px) rotate(-12deg) scale(0.5);
      filter: drop-shadow(0 6px 10px rgba(0,0,0,0.35)) blur(0.6px) brightness(0.82);
    }
    10% {
      left: 14%;
      transform: translate3d(0, 4px, -80px) rotate(8deg) scale(0.72);
      filter: drop-shadow(0 10px 18px rgba(0,0,0,0.42)) blur(0.3px) brightness(0.9);
    }
    22% {
      left: 28%;
      transform: translate3d(0, -16px, -20px) rotate(-6deg) scale(1.05);
      filter: drop-shadow(0 14px 24px rgba(0,0,0,0.5)) brightness(0.98);
    }
    35% {
      left: 44%;
      transform: translate3d(0, -10px, 60px) rotate(10deg) scale(1.28);
      filter: drop-shadow(0 18px 30px rgba(0,0,0,0.55)) brightness(1.05);
    }
    48% {
      left: 58%;
      transform: translate3d(0, 8px, 160px) rotate(-5deg) scale(1.5);
      filter: drop-shadow(0 24px 40px rgba(0,0,0,0.65)) brightness(1.1);
    }
    58% {
      left: 72%;
      transform: translate3d(0, -12px, 40px) rotate(7deg) scale(1.22);
      filter: drop-shadow(0 16px 28px rgba(0,0,0,0.52)) brightness(1.02);
    }
    70% {
      left: 86%;
      transform: translate3d(0, 12px, -100px) rotate(-9deg) scale(0.75);
      filter: drop-shadow(0 10px 16px rgba(0,0,0,0.4)) blur(0.4px) brightness(0.88);
    }
    82% {
      left: 74%;
      transform: translate3d(0, -14px, 20px) rotate(5deg) scale(1.08);
      filter: drop-shadow(0 14px 22px rgba(0,0,0,0.48)) brightness(0.96);
    }
    92% {
      left: 38%;
      transform: translate3d(0, 6px, -120px) rotate(-7deg) scale(0.58);
      filter: drop-shadow(0 8px 14px rgba(0,0,0,0.34)) blur(0.5px) brightness(0.85);
    }
    100% {
      left: 0;
      transform: translate3d(0, 18px, -140px) rotate(-12deg) scale(0.5);
      filter: drop-shadow(0 6px 10px rgba(0,0,0,0.35)) blur(0.6px) brightness(0.82);
    }
  }
  @keyframes ipSplashPop {
    0%, 100% { opacity: 0; transform: translateY(6px) scale(0.6); }
    12%  { opacity: 0.85; transform: translateY(-2px) scale(1); }
    28%  { opacity: 0.5; transform: translateY(-8px) scale(0.85); }
    45%  { opacity: 0; transform: translateY(-14px) scale(0.5); }
  }