/* ============ DESIGN TOKENS ============ */
:root{
  --navy:#0b1d33;
  --navy-2:#102a4c;
  --slate:#1f2a3d;
  --ink:#0f172a;
  --muted:#5b6b82;
  --line:#e5eaf2;
  --bg:#ffffff;
  --bg-soft:#f5f7fb;
  --orange:#ff7a18;
  --orange-2:#ff9446;
  --tech:#16c79a;
  --shadow-sm:0 4px 14px rgba(11,29,51,.06);
  --shadow-md:0 12px 30px rgba(11,29,51,.10);
  --shadow-lg:0 24px 60px rgba(11,29,51,.18);
  --radius:14px;
  --radius-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Noto Sans','PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--ink);background:var(--bg);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.container{width:min(1180px,92%);margin-inline:auto}

h1,h2,h3,h4{font-weight:800;line-height:1.15;letter-spacing:-.02em;color:var(--navy)}
h1{font-size:clamp(2rem,4.6vw,3.6rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.2rem}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.95rem 1.6rem;border-radius:999px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--orange),var(--orange-2));color:#fff;box-shadow:0 10px 24px rgba(255,122,24,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,24,.45)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-block{width:100%}

/* ============ HEADER ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(11,29,51,.85);backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .3s, box-shadow .3s;
}
.site-header.scrolled{background:rgba(11,29,51,.96);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 0;color:#fff}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:800;color:#fff;font-size:1.08rem}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--orange),var(--orange-2));color:#fff;font-size:1.1rem;font-weight:900}
.main-nav{display:flex;gap:1.5rem}
.main-nav a{font-size:.95rem;color:rgba(255,255,255,.85);position:relative;padding:.3rem 0;transition:color .2s}
.main-nav a:hover{color:var(--orange-2)}
.main-nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--orange);transition:width .25s var(--ease)}
.main-nav a:hover::after{width:100%}

.header-tools{display:flex;align-items:center;gap:.6rem}
.lang-switcher{position:relative}
.lang-btn{
  display:inline-flex;align-items:center;gap:.4rem;padding:.5rem .75rem;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff;font-weight:600;font-size:.85rem;cursor:pointer;transition:background .2s
}
.lang-btn:hover{background:rgba(255,255,255,.16)}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 8px);min-width:160px;background:#fff;border-radius:12px;
  box-shadow:var(--shadow-md);overflow:hidden;opacity:0;transform:translateY(-6px) scale(.98);pointer-events:none;transition:.2s var(--ease)
}
.lang-menu.open{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.lang-menu button, .lang-menu a {display:block;width:100%;text-align:left;padding:.7rem 1rem;background:#fff;border:0;color:var(--ink);font-size:.9rem;cursor:pointer;transition:background .15s;text-decoration:none;box-sizing:border-box;}
.lang-menu button:hover, .lang-menu a:hover {background:var(--bg-soft);color:var(--orange)}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:38px;height:38px;align-items:center;justify-content:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:8px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .25s,opacity .2s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ HERO ============ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;color:#fff;padding:120px 0 80px}
.hero-bg{
  position:absolute;inset:0;background:url('images/bg.jpg') center/cover no-repeat;
  transform:scale(1.08);animation:slowZoom 18s ease-in-out infinite alternate;
}
@keyframes slowZoom{from{transform:scale(1.02)}to{transform:scale(1.12)}}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(115deg,rgba(11,29,51,.92) 0%,rgba(11,29,51,.65) 55%,rgba(16,42,76,.35) 100%)}
.hero-content{position:relative;z-index:2;max-width:780px;margin-inline:auto;text-align:center}
.hero-eyebrow{display:inline-block;padding:.4rem .9rem;border-radius:999px;background:rgba(255,122,24,.18);border:1px solid rgba(255,122,24,.45);color:var(--orange-2);font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin-bottom:1.2rem;animation:fadeUp .8s var(--ease) .1s both}
.hero h1{color:#fff;animation:fadeUp .9s var(--ease) .2s both}
.hero h1 .accent{background:linear-gradient(120deg,var(--orange),var(--orange-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin:1.2rem auto 2rem;font-size:1.1rem;color:rgba(255,255,255,.9);max-width:640px;animation:fadeUp .9s var(--ease) .35s both}
.hero-cta{display:flex;flex-wrap:wrap;gap:.85rem;justify-content:center;animation:fadeUp .9s var(--ease) .5s both}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:3rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.15);animation:fadeUp 1s var(--ease) .7s both}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:clamp(1.4rem,2.4vw,2rem);color:var(--orange-2);font-weight:800;line-height:1}
.hero-stats span{font-size:.82rem;color:rgba(255,255,255,.75);margin-top:.35rem;text-transform:uppercase;letter-spacing:.08em}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* ============ SECTIONS ============ */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-soft)}
.section-dark{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-head{max-width:760px;margin:0 auto 3rem;text-align:center}
.section-head .kicker{color:var(--orange);font-weight:700;letter-spacing:.18em;text-transform:uppercase;font-size:.78rem}
.section-head h2{margin:.6rem 0 .8rem}
.section-head p{color:var(--muted)}
.section-dark .section-head p{color:rgba(255,255,255,.75)}
.kicker{color:var(--orange);font-weight:700;letter-spacing:.18em;text-transform:uppercase;font-size:.78rem;display:inline-block;margin-bottom:.5rem}

/* Reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ PRODUCTS ============ */
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-media{aspect-ratio:16/10;overflow:hidden;background:#eef2f7}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.product-card:hover .product-media img{transform:scale(1.06)}
.product-body{padding:1.6rem 1.6rem 1.8rem}
.tag{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--orange);background:rgba(255,122,24,.1);padding:.3rem .65rem;border-radius:6px;margin-bottom:.7rem}
.product-body h3{font-size:1.4rem;margin-bottom:.5rem}
.product-body p{color:var(--muted);margin-bottom:1rem}
.check-list li{position:relative;padding-left:1.6rem;color:var(--ink);margin:.35rem 0;font-size:.95rem}
.check-list li::before{content:"";position:absolute;left:0;top:.55rem;width:14px;height:14px;border-radius:50%;background:var(--tech);box-shadow:inset 0 0 0 3px #fff,0 0 0 1px var(--tech)}

.product-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2.2rem}
.product-gallery figure{position:relative;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--shadow-sm)}
.product-gallery img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.product-gallery figure:hover img{transform:scale(1.08)}
.product-gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:.6rem .9rem;font-size:.82rem;font-weight:600;color:#fff;background:linear-gradient(180deg,transparent,rgba(11,29,51,.85))}

/* ============ TECHNOLOGY ============ */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.tech-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.tech-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.tech-card img{width:100%;aspect-ratio:5/3;object-fit:cover;background:#eef2f7}
.tech-card h3{padding:1.1rem 1.3rem .3rem;font-size:1.1rem}
.tech-card p{padding:0 1.3rem 1.4rem;color:var(--muted);font-size:.92rem}

.connection-block{margin-top:3rem;background:#fff;border-radius:var(--radius);padding:2rem;display:grid;grid-template-columns:1.1fr 1fr;gap:2rem;align-items:center;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.connection-media img{width:100%;border-radius:var(--radius-sm)}
.connection-copy h3{font-size:1.6rem;margin:.4rem 0 1rem}
.connection-copy ul li{position:relative;padding-left:1.4rem;margin:.5rem 0;color:var(--muted)}
.connection-copy ul li::before{content:"";position:absolute;left:0;top:.6rem;width:8px;height:8px;background:var(--orange);border-radius:2px;transform:rotate(45deg)}
.connection-copy strong{color:var(--navy)}

/* ============ ADVANTAGES ============ */
.advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem 1.4rem;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.adv-icon{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(255,122,24,.15),rgba(22,199,154,.1));color:var(--orange);margin-bottom:1rem}
.adv-icon svg{width:26px;height:26px}
.adv-card h3{font-size:1.1rem;margin-bottom:.4rem}
.adv-card p{color:var(--muted);font-size:.92rem}

/* ============ COMPANY ============ */
.company-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-bottom:3rem}
.company-photo,.company-video{border-radius:var(--radius);overflow:hidden;background:#000;aspect-ratio:4/3;box-shadow:var(--shadow-sm)}
.company-photo img,.company-video video{width:100%;height:100%;object-fit:cover}
.company-photo{cursor:pointer;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.company-photo:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-md)}
.company-video{position:relative;cursor:pointer;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.company-video:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-md)}
.company-video video{display:block}
.video-play-icon{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:80px;height:80px;border-radius:50%;
  background:rgba(255,122,24,.9);display:grid;place-items:center;
  box-shadow:0 8px 24px rgba(255,122,24,.5);transition:transform .3s var(--ease),box-shadow .3s;
}
.company-video:hover .video-play-icon{transform:translate(-50%,-50%) scale(1.1);box-shadow:0 12px 32px rgba(255,122,24,.6)}
.video-play-icon svg{width:40px;height:40px}

.credentials{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem;text-align:center}
.credentials h3{font-size:1.2rem;margin-bottom:1.3rem}
.cred-row{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem}
.cred-card{display:flex;align-items:center;gap:.6rem;padding:.85rem 1.1rem;background:var(--bg-soft);border-radius:10px;font-weight:600;color:var(--navy);font-size:.9rem;transition:transform .25s var(--ease)}
.cred-card:hover{transform:translateY(-3px)}
.cred-card[onclick]{cursor:pointer}
.cred-card[onclick]:hover{box-shadow:var(--shadow-sm)}
.cred-card svg{width:22px;height:22px;color:var(--orange)}

/* ============ CONTACT ============ */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.contact-copy p{color:rgba(255,255,255,.78);margin-bottom:1.5rem;max-width:480px}
.contact-info li{display:flex;gap:.7rem;align-items:flex-start;color:rgba(255,255,255,.9);margin:.7rem 0;font-size:.95rem}
.contact-info svg{width:20px;height:20px;color:var(--orange-2);flex-shrink:0;margin-top:2px}
.contact-info a{color:#fff;border-bottom:1px dashed rgba(255,255,255,.4)}
.contact-info a:hover{color:var(--orange-2);border-bottom-color:var(--orange-2)}

.contact-form{background:#fff;border-radius:var(--radius);padding:2rem;color:var(--ink);box-shadow:var(--shadow-lg)}
.field{margin-bottom:1rem}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.4rem;color:var(--navy)}
.field input,.field select,.field textarea{
  width:100%;padding:.8rem 1rem;border:1px solid var(--line);border-radius:10px;background:#fff;font:inherit;color:var(--ink);transition:border-color .2s, box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,122,24,.15)}
.field textarea{resize:vertical}
.privacy{font-size:.8rem;color:var(--muted);margin:.5rem 0 1rem;line-height:1.5}
.form-success{margin-top:1rem;color:#0f8a5e;background:rgba(22,199,154,.1);border:1px solid rgba(22,199,154,.3);padding:.8rem 1rem;border-radius:10px;font-size:.9rem;text-align:center}

/* ============ FOOTER ============ */
.site-footer{background:#06121f;color:rgba(255,255,255,.75);padding:64px 0 24px}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2.5rem}
.site-footer .brand{color:#fff;margin-bottom:1rem}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:1rem}
.site-footer ul li{margin:.4rem 0}
.site-footer a:hover{color:var(--orange-2)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:3rem;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem}
.footer-bottom a:hover{color:var(--orange-2)}

/* ============ FLOATING WHATSAPP ============ */
.wa-float{
  position:fixed;right:22px;bottom:28px;z-index:90;width:60px;height:60px;border-radius:50%;
  background:#25d366;color:#fff;display:grid;place-items:center;
  box-shadow:0 12px 30px rgba(37,211,102,.45);transition:transform .25s var(--ease),box-shadow .25s;
  opacity:0;transform:translateY(20px) scale(.8);
}
.wa-float.show{opacity:1;transform:translateY(0) scale(1);animation:waPopIn .5s var(--ease)}
@keyframes waPopIn{0%{opacity:0;transform:translateY(20px) scale(.8)}60%{transform:translateY(-5px) scale(1.1)}100%{opacity:1;transform:translateY(0) scale(1)}}
.wa-float:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 18px 40px rgba(37,211,102,.55)}
.wa-float svg{width:30px;height:30px}
.wa-pulse{position:absolute;inset:-6px;border-radius:50%;border:2px solid rgba(37,211,102,.5);animation:wapulse 1.8s infinite}
@keyframes wapulse{0%{transform:scale(.9);opacity:.8}100%{transform:scale(1.4);opacity:0}}

.wa-mobile-bar{
  display:none;position:fixed;left:12px;right:12px;bottom:14px;z-index:90;
  background:linear-gradient(135deg,#25d366,#1ebf5b);color:#fff;border:0;border-radius:14px;
  padding:.95rem 1rem;font-weight:700;font-size:.95rem;align-items:center;justify-content:center;gap:.6rem;
  box-shadow:0 12px 30px rgba(37,211,102,.4);cursor:pointer;
}

/* ============ RESPONSIVE ============ */
@media (max-width:900px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:1.4rem}
  .product-grid,.tech-grid,.advantage-grid{grid-template-columns:1fr 1fr;gap:1rem}
  .product-gallery{grid-template-columns:1fr 1fr}
  .connection-block{grid-template-columns:1fr;padding:1.4rem}
  .company-grid{grid-template-columns:1fr 1fr}
  .contact-wrap{grid-template-columns:1fr;gap:2rem}
  .footer-inner{grid-template-columns:1fr 1fr;gap:2rem}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;background:#0b1d33;padding:1.2rem;
    flex-direction:column;gap:.4rem;transform:translateY(-120%);transition:transform .35s var(--ease);
    box-shadow:var(--shadow-lg);
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:.7rem .4rem;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
}
@media (max-width:640px){
  .product-grid,.tech-grid,.advantage-grid,.company-grid,.footer-inner{grid-template-columns:1fr}
  .product-gallery{grid-template-columns:1fr 1fr;gap:.6rem}
  .hero{padding:110px 0 140px;min-height:auto}
  .hero-stats{grid-template-columns:1fr 1fr;margin-top:2rem;padding-top:1.4rem}
  .footer-bottom{flex-direction:column;gap:.6rem;text-align:center}
  .wa-float{right:14px;bottom:80px;width:52px;height:52px}
  .wa-float svg{width:26px;height:26px}
  .wa-mobile-bar{display:flex}
  .contact-form{padding:1.4rem}
  /* 调整 Messenger 侧边球尺寸，悬浮在 WA 上方 */
  .messenger-float { right: 14px; bottom: 142px; width: 52px; height: 52px; }
  .messenger-float svg { width: 28px; height: 28px; }
  
  /* 隐藏原来的全宽 WA 按钮，显示新的双按钮 */
  .wa-mobile-bar { display: none; }
  .mobile-action-bar { display: flex; }
  .wa-float, .messenger-float {
    display: none !important;
  }
  
  .mobile-action-bar {
    display: flex !important;
  }
  
  body {
    padding-bottom: 70px !important;
  }
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .hero-bg{animation:none}
}

/* ============ LIGHTBOX ============ */
.lightbox{
  display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.92);
  backdrop-filter:blur(8px);align-items:center;justify-content:center;padding:2rem;
  animation:fadeIn .3s ease;
}
.lightbox.active{display:flex}
.lightbox-content{position:relative;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;align-items:center}
.lightbox-content img{max-width:100%;max-height:85vh;object-fit:contain;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.lightbox-caption{color:#fff;font-size:1.1rem;font-weight:600;margin-top:1rem;text-align:center}
.lightbox-close{
  position:absolute;top:-40px;right:0;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.15);border:2px solid rgba(255,255,255,.3);color:#fff;
  font-size:2rem;line-height:1;cursor:pointer;display:grid;place-items:center;
  transition:background .2s,transform .2s;
}
.lightbox-close:hover{background:rgba(255,255,255,.25);transform:scale(1.1)}
.product-gallery figure{cursor:pointer;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.product-gallery figure:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-md)}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ============ VIDEO MODAL ============ */
.video-modal{
  display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.95);
  backdrop-filter:blur(8px);align-items:center;justify-content:center;padding:2rem;
  animation:fadeIn .3s ease;
}
.video-modal.active{display:flex}
.video-modal-content{position:relative;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;align-items:center}
.video-modal-content video{max-width:100%;max-height:85vh;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.video-modal-close{
  position:absolute;top:-40px;right:0;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.15);border:2px solid rgba(255,255,255,.3);color:#fff;
  font-size:2rem;line-height:1;cursor:pointer;display:grid;place-items:center;
  transition:background .2s,transform .2s;
}
.video-modal-close:hover{background:rgba(255,255,255,.25);transform:scale(1.1)}

/* ============ WHATSAPP POPUP MODAL ============ */
.whatsapp-popup{
  display:none;position:fixed;inset:0;z-index:1100;background:rgba(0,0,0,.7);
  backdrop-filter:blur(5px);align-items:center;justify-content:center;padding:1rem;
  animation:fadeIn .3s ease;
}
.whatsapp-popup.active{display:flex}
.whatsapp-popup-content{
  position:relative;background:#fff;border-radius:var(--radius);padding:2.5rem;
  max-width:480px;width:100%;box-shadow:var(--shadow-lg);text-align:center;
  animation:slideInUp .4s var(--ease);
}
@keyframes slideInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
.whatsapp-popup-close{
  position:absolute;top:12px;right:12px;width:36px;height:36px;border-radius:50%;
  background:var(--bg-soft);border:0;color:var(--ink);font-size:1.8rem;line-height:1;
  cursor:pointer;display:grid;place-items:center;transition:background .2s,transform .2s;
}
.whatsapp-popup-close:hover{background:var(--line);transform:rotate(90deg)}
.whatsapp-popup-header{display:flex;flex-direction:column;align-items:center;gap:.8rem;margin-bottom:1.2rem}
.whatsapp-popup-header h3{font-size:1.4rem;color:var(--navy);margin:0}
.whatsapp-popup-text{color:var(--muted);font-size:.95rem;margin-bottom:1.5rem;line-height:1.6}
.whatsapp-qr-section{margin-bottom:1.5rem}
.qr-code-placeholder{
  display:inline-block;padding:1rem;background:var(--bg-soft);border-radius:var(--radius-sm);
  border:2px dashed var(--line);
}
.qr-hint{font-size:.8rem;color:var(--muted);margin-top:.5rem;margin-bottom:0}
.whatsapp-btn-large{
  display:inline-flex;align-items:center;justify-content:center;gap:.6rem;
  padding:1rem 2rem;font-size:1.1rem;width:100%;margin-bottom:1rem;
}
.whatsapp-popup-note{font-size:.85rem;color:var(--muted);margin:0}

/* ============ FLOATING MESSENGER ============ */
.messenger-float {
  position: fixed; right: 22px; bottom: 100px; /* 定位在WhatsApp上方 */
  z-index: 90; width: 60px; height: 60px; border-radius: 50%;
  background: #0084FF; color: #fff; display: grid; place-items: center;
  box-shadow: 0 12px 30px rgba(0, 132, 255, 0.45);
  transition: transform .25s var(--ease), box-shadow .25s;
  opacity: 0; transform: translateY(20px) scale(.8);
}
.messenger-float.show { opacity: 1; transform: translateY(0) scale(1); animation: waPopIn .5s var(--ease); }
.messenger-float:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 18px 40px rgba(0, 132, 255, 0.55); }
.messenger-float svg { width: 34px; height: 34px; }
.messenger-pulse {
  position: absolute; inset: -6px; border-radius: 50%;
  border: 2px solid rgba(0, 132, 255, 0.5); animation: wapulse 1.8s infinite;
}

/* ============ MOBILE BOTTOM BAR (SPLIT) ============ */
.mobile-action-bar {
  display: none; position: fixed; left: 12px; right: 12px; bottom: 14px; z-index: 90; gap: 10px;
}
.mobile-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  border: 0; border-radius: 14px; padding: 0.95rem 0; font-weight: 700; font-size: 0.95rem; color: #fff; cursor: pointer;
}
.wa-btn { background: linear-gradient(135deg, #25d366, #1ebf5b); box-shadow: 0 12px 24px rgba(37,211,102,.3); }
.messenger-btn { background: linear-gradient(135deg, #00B2FF, #006AFF); box-shadow: 0 12px 24px rgba(0,132,255,.3); }