/* ==========================================================================
   LIUTONG FOUNTAIN — High-end minimal theme
   Design tokens
   ========================================================================== */
   :root{
    --bg-0:#0a1628;          
    --bg-1:#ffffff;          
    --bg-2:#f0f7fa;          
    --bg-3:#e6f2f5;          
    --bg-4:#d9eef2;          
    --panel:#ffffff;
    --panel-dark:#0a1628;    
    --line:rgba(10,22,40,0.08);
    --line-white:rgba(255,255,255,.10);
    --text:#1e293b;
    --text-inv:#ffffff;
    --muted:#64748b;
    --muted-inv:#94a3b8;
    
    --brand:#0a1628;          
    --brand-2:#0d213b;        
    --brand-3:#0088ff;        
    --cyan:#00d4ff;
    
    --gradient-water: linear-gradient(135deg, #0066cc 0%, #00d4ff 100%);
    --gradient-dark: linear-gradient(180deg, #0a1628 0%, #040a14 100%);
    
    --radius:4px;
    --radius-lg:8px;
    --radius-pill:4px;
    --wrap:1440px;
    --wrap-wide:1600px;
    --gutter:80px;
    --ease:cubic-bezier(.2,.7,.2,1);
  }
  
  *{box-sizing:border-box}
  html,body{margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
    color:var(--text);
    background:#ffffff;
    line-height:1.55;
    min-height:100vh;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{list-style:none;margin:0;padding:0}
  
  .wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
  
  /* Section heading */
  .sec-head{text-align:center;margin:0 auto 60px;max-width:1100px}
  .sec-title {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(28px, 4vw, 40px);
    letter-spacing: -0.5px;
    text-transform: uppercase;
    margin: 0;
    color: var(--brand);
    position: relative;
    line-height: 1.2;
  }
  .sec-title.solid{color:var(--brand);}
  .sec-title.solid span{color:var(--brand);}
  .sec-hr {
    display: block;
    width: 48px;
    height: 4px;
    background: var(--gradient-water);
    margin: 18px auto 22px;
    border-radius: 2px;
  }
  .sec-head{position:relative;}
  
  .sec-title span{
    color:var(--brand);
    background:none;
    -webkit-background-clip:initial;background-clip:initial;
  }
  .sec-sub{color:var(--muted);font-size:15px;letter-spacing:.02em;margin:0}
  
  /* Buttons */
  .btn-cta{
    display:inline-flex;align-items:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-pill);
    background:var(--brand-3);border:none;
    color:#fff;font-weight:500;letter-spacing:.04em;font-size:13px;text-transform:uppercase;
    transition:background .2s var(--ease);
  }
  .btn-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,212,255,0.3);}
  
  .btn-pill{
    display:inline-flex;align-items:center;gap:10px;
    padding:14px 34px;border-radius:var(--radius-pill);
    background:var(--brand);
    color:#fff;font-weight:600;letter-spacing:.03em;font-size:15px;
    box-shadow:none;
    transition:background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .btn-pill:hover{background:var(--brand-2);box-shadow:0 12px 32px rgba(10,22,40,0.15);}
  .btn-primary{padding:16px 40px;font-size:16px}
  
  /* ==========================================================================
     01 NAV
     ========================================================================== */
  .nav{
    position:fixed;top:0;left:0;right:0;z-index:100;
    padding:14px 0;
    background:rgba(10, 22, 40, 0.95); backdrop-filter: blur(10px);
    border-bottom:1px solid rgba(255,255,255,0.06);
    transition:background .3s var(--ease),padding .2s var(--ease);
  }
  .nav.is-scrolled{padding:8px 0;background:rgba(10, 22, 40, 0.98); backdrop-filter: blur(10px);}
  .nav-inner{
    max-width:var(--wrap-wide);margin:0 auto;padding:0 40px;
    display:grid;
    grid-template-columns:auto 1fr;
    grid-template-rows:auto auto;
    grid-template-areas:
      "brand contacts"
      "brand bottom";
    align-items:center;
    column-gap:40px;
    row-gap:8px;
  }
  /* High-End Typography Brand (LIUTONG CULTURE) */
  .brand {
    grid-area: brand;
    display: inline-flex;
    flex-direction: column;
    text-decoration: none;
    align-items: flex-start;
    padding: 4px 0;
    gap: 0;
  }
  
  .brand-text-wrap {
    display: flex;
    flex-direction: column;
  }
  
  .brand-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: 22px;
    letter-spacing: 3.5px;
    color: #ffffff;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 7px;
    line-height: 1.1;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
  }
  
  .brand-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 48px;
    height: 1px;
    background: rgba(255, 255, 255, 0.35);
  }
  
  .brand-slogan {
    font-family: 'Inter', system-ui, sans-serif;
    font-weight: 400;
    font-size: 10.5px;
    letter-spacing: 1px;
    color: #94a3b8;
    text-transform: none;
    margin-top: 7px;
    white-space: nowrap;
  }
  
  .footer .brand { margin-bottom: 32px; }
  
  @media (max-width: 768px) {
    .brand-title {
      font-size: 16px;
      letter-spacing: 2px;
      padding-bottom: 5px;
    }
    .brand-title::after {
      width: 32px;
    }
    .brand-slogan {
      font-size: 9px;
      letter-spacing: 0.5px;
      margin-top: 5px;
      white-space: normal;
      line-height: 1.3;
    }
  }
  
  .nav-contacts{
    grid-area:contacts;
    display:flex;align-items:center;justify-content:flex-end;gap:24px;
    padding-bottom:4px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-bottom{
    grid-area:bottom;
    display:flex;align-items:center;justify-content:flex-end;gap:28px;
    padding-top:6px;
  }
  .nav-links{display:flex;gap:32px}
  .nav-links a{
    position:relative;padding:8px 2px;font-size:15px;letter-spacing:.04em;
    color:#e5ecff;font-weight:500;transition:color .2s var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--brand-3);
    transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
  }
  .nav-links a:hover,.nav-links a.active{color:#fff}
  .nav-links a.active::after,.nav-links a:hover::after{transform:scaleX(1)}
  .nc{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--muted-inv);font-size:12.5px;letter-spacing:.02em;
    transition:color .2s var(--ease);
  }
  .nc svg{width:16px;height:16px;color:var(--brand-3)}
  .nc:hover{color:#fff}
  
  .nav-burger{display:none;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
  .nav-burger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease)}
  .nav-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-burger.is-open span:nth-child(2){opacity:0}
  .nav-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  
  /* ==========================================================================
     02 HERO
     ========================================================================== */
  .hero{position:relative;height:100vh;min-height:760px;overflow:hidden;isolation:isolate}
  .hero-bg{position:absolute;inset:0;z-index:0}
  .hero-slide{
    position:absolute;inset:0;
    opacity:0;visibility:hidden;
    transition:opacity 1.4s var(--ease), visibility 0s linear 1.4s;
    will-change:opacity;
  }
  .hero-slide.is-active{opacity:1;visibility:visible;transition:opacity 1.4s var(--ease), visibility 0s linear 0s}
  .hero-slide .slide-media{
    position:absolute;inset:-4%;
    background-size:cover;background-position:center;
    transform:scale(1.08) translate3d(0,0,0);
    will-change:transform;
  }
  .hero-slide.is-active .slide-media{animation:kenBurns 11s var(--ease) forwards}
  @keyframes kenBurns{
    0%  {transform:scale(1.02) translate3d(-1%,-1%,0)}
    100%{transform:scale(1.18) translate3d(2%, 2%,0)}
  }
  .hero-vignette{
    position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(120% 80% at 50% 30%,transparent 0%,rgba(0,0,0,.35) 55%,rgba(10,22,40,.85) 100%),
      linear-gradient(180deg,rgba(10,22,40,.55) 0%,rgba(10,22,40,0) 30%,rgba(10,22,40,0) 60%,rgba(10,22,40,.85) 100%);
  }
  .hero-grid{
    position:absolute;inset:0;pointer-events:none;opacity:.15;
    background-image:
      linear-gradient(rgba(255,255,255,.18) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.18) 1px,transparent 1px);
    background-size:80px 80px;
    mask-image:radial-gradient(80% 60% at 50% 40%,#000 0%,transparent 90%);
    -webkit-mask-image:radial-gradient(80% 60% at 50% 40%,#000 0%,transparent 90%);
  }
  
  .hero-inner{
    position:relative;z-index:2;
    height:100%;display:flex;align-items:center;justify-content:center;
    padding:0 40px;text-align:center;
  }
  .hero-title {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(38px, 6.5vw, 92px);
    letter-spacing: -1px;
    line-height: 1.05;
    color: #ffffff;
    margin: 0;
    text-transform: uppercase;
  }
  .hero-title .hero-line {
    display: block;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    opacity: 0;
    transform: translateY(20px);
    animation: textReveal 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
  }
  .hero-title .hero-line:nth-child(1) {
    font-size: clamp(14px, 2vw, 24px);
    letter-spacing: 4px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #cbd5e1;
    text-transform: uppercase;
    text-shadow: none;
    animation-delay: 0.1s;
  }
  .hero-title .hero-line:nth-child(2) {
    animation-delay: 0.2s;
  }
  .hero-title .hero-line:nth-child(3) {
    animation-delay: 0.3s;
    color: #3b82f6;
  }
  @keyframes textReveal {
    to { opacity: 1; transform: translateY(0); }
  }
  
  .hero-caption{
    position:absolute;left:6%;right:6%;bottom:150px;
    z-index:3;
    padding:22px 30px 22px 40px;
    background:linear-gradient(90deg,rgba(10,22,40,.75) 0%,rgba(10,22,40,.45) 60%,rgba(10,22,40,.15) 100%);
    backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
    border-top:1px solid rgba(255,255,255,.1);
    border-bottom:1px solid rgba(255,255,255,.1);
    overflow:hidden;
    min-height:110px;
  }
  .hero-caption-bar{
    position:absolute;left:0;top:14%;bottom:14%;width:3px;
    background:var(--brand-3);
    box-shadow:0 0 12px rgba(0,212,255,.7);
  }
  .hero-caption-line{
    margin:0;position:absolute;left:40px;right:30px;top:22px;
    display:flex;flex-direction:column;gap:6px;
    font-family:'Inter',sans-serif;font-weight:400;
    font-size:13.5px;letter-spacing:.16em;color:#e0eaff;line-height:1.7;
    text-transform:uppercase;text-align:left;
    opacity:0;
    transition:opacity .8s var(--ease);
    pointer-events:none;
  }
  .hero-caption-line span{display:block}
  .hero-caption-line span:first-child{color:#ffffff;font-weight:600}
  .hero-caption-line.is-active{opacity:1;}
  
  .hero-controls{
    position:absolute;left:50%;bottom:78px;transform:translateX(-50%);
    z-index:3;display:flex;align-items:center;gap:24px;
  }
  .hero-arrow{
    width:42px;height:42px;border-radius:50%;
    border:1px solid rgba(255,255,255,.2);background:rgba(10,22,40,.4);
    color:#ffffff;display:grid;place-items:center;cursor:pointer;
    transition:all .3s var(--ease);backdrop-filter:blur(4px);
  }
  .hero-arrow svg{width:18px;height:18px}
  .hero-arrow:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:scale(1.08);}
  
  .hero-dots{display:flex;gap:14px;align-items:center}
  .dot{
    width:14px;height:14px;border-radius:50%;
    background:transparent;border:1.5px solid rgba(255,255,255,.55);
    padding:0;cursor:pointer;position:relative;
    transition:all .35s var(--ease);display:grid;place-items:center;
  }
  .dot i{width:8px;height:8px;border-radius:50%;background:transparent;transition:background .35s var(--ease), transform .35s var(--ease)}
  .dot:hover{border-color:#fff}
  .dot:hover i{background:rgba(255,255,255,.6)}
  .dot.is-active{
    border-color:#ffffff;background:#ffffff;
    box-shadow:0 0 0 4px rgba(255,255,255,.12),0 0 18px rgba(255,255,255,.55);
  }
  .dot.is-active i{background:transparent}
  .dot:not(.is-active) i{background:var(--brand-3);box-shadow:0 0 8px rgba(0,212,255,.6)}
  .dot:not(.is-active){border-color:var(--brand-3)}
  
  .hero-progress{
    position:absolute;left:0;right:0;bottom:0;height:3px;
    background:rgba(255,255,255,.06);z-index:3;overflow:hidden;
  }
  .hero-progress-bar{
    display:block;height:100%;width:0%;
    background:var(--brand-3);
    box-shadow:0 0 12px rgba(0,212,255,0.4);
    transition:width .1s linear;
  }
  
  .hero-scroll{
    position:absolute;right:40px;bottom:78px;z-index:3;
    display:flex;flex-direction:column;align-items:center;gap:10px;
    color:rgba(255,255,255,.6);font-size:10px;letter-spacing:.4em;
    writing-mode:vertical-rl;transform:rotate(180deg);
  }
  .hero-scroll em{
    writing-mode:horizontal-tb;transform:rotate(180deg);
    width:1px;height:56px;background:linear-gradient(180deg,rgba(255,255,255,.6),transparent);
    position:relative;overflow:hidden;
  }
  .hero-scroll em::before{
    content:'';position:absolute;left:0;top:-30%;width:100%;height:30%;
    background:#ffffff;animation:scrollBlink 2.2s ease-in-out infinite;
  }
  @keyframes scrollBlink{0%{top:-30%}100%{top:100%}}
  
  /* ==========================================================================
     03 SERVICES
     ========================================================================== */
  .services{background:var(--bg-2);padding:100px 0;}
  .svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px;}
  .svc-card{
    display:block;background:#fff;border-radius:var(--radius);overflow:hidden;
    text-decoration:none;color:inherit;
    box-shadow:0 4px 16px rgba(10,22,40,0.04);
    border:1px solid #e2e8f0;
    transition:box-shadow .35s var(--ease),border-color .35s var(--ease);
  }
  .svc-card:hover{border-color:rgba(0,212,255,0.3);box-shadow:0 12px 32px rgba(0,136,255,0.06);}
  .svc-card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0b1220;}
  .svc-card-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s var(--ease);}
  .svc-card:hover .svc-card-media img{transform:scale(1.04);}
  .svc-card-body{padding:26px 24px 30px;}
  .svc-card-body h3{font-family:'Inter',sans-serif;font-weight:600;font-size:18px;color:var(--brand);margin:0 0 10px;letter-spacing:0;}
  .svc-card-body p{font-size:13.5px;color:var(--muted);line-height:1.6;margin:0;}
  @media (max-width:1280px){.svc-grid{grid-template-columns:repeat(3,1fr);}}
  @media (max-width:1024px){.svc-grid{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:640px){.svc-grid{grid-template-columns:1fr;gap:20px;}}
  
  /* ==========================================================================
     04 PRODUCT RANGE
     ========================================================================== */
  .products{background:#ffffff;padding:100px 0;}
  .prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px;}
  .prod-card{
    display: flex; align-items: center;
    text-decoration: none; color: inherit;
    background:#fff;border-radius:var(--radius);overflow:hidden;
    box-shadow:0 4px 16px rgba(10,22,40,0.04);
    border:1px solid #e2e8f0;
    transition:box-shadow .35s var(--ease),border-color .35s var(--ease);
  }
  .prod-card:hover{border-color:rgba(0,212,255,0.3);box-shadow:0 12px 32px rgba(0,136,255,0.06);}
  
  .prod-card-media{
    flex: 0 0 220px;
    height: 100%;
    min-height: 220px;
    background:#ffffff;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
    border-right:1px solid #e2e8f0;
    overflow:hidden;
  }
  .prod-card-media img{max-width:100%;max-height:100%;object-fit:contain;transition:transform .4s var(--ease);}
  .prod-card:hover .prod-card-media img{transform:scale(1.04);}
  .prod-card-body{flex: 1; padding:24px 30px;}
  
  .prod-tag{
    color:var(--brand-3);
    background:rgba(59,130,246,0.1);
    padding:5px 10px;
    border-radius:4px;
    display:inline-block;
    text-transform:uppercase;
    font-size:11px;
    font-weight:600;
    letter-spacing:1.5px;
    margin-bottom:12px;
  }
  
  .prod-card-body h3{font-family:'Inter',sans-serif;font-weight:600;font-size:17px;color:var(--brand);margin:0 0 10px;}
  .prod-card-body p{font-size:13.5px;color:var(--muted);line-height:1.6;margin:0;}
  @media (max-width:1024px){.prod-grid{grid-template-columns:1fr;}}
  
  @media (max-width:640px){
    .prod-card { flex-direction: column; align-items: stretch; }
    .prod-card-media { 
      flex: 0 0 auto; 
      width: 100%; 
      height: 240px; 
      min-height: auto; 
      border-right: none; 
      border-bottom: 1px solid #e2e8f0; 
    }
    .prod-card-media img { max-width: 80%; max-height: 80%; }
    .prod-card-body { padding: 24px 20px; }
  }
  
  /* ==========================================================================
     05 SUCCESS PROJECTS (Dynamic & Beautified)
     ========================================================================== */
  .cases { padding: 120px 0; background: var(--bg-2); }
  .cases-wrap { display: grid; grid-template-columns: 150px 1fr; gap: 50px; margin-bottom: 50px; align-items: center; }
  .cases-side { display: flex; flex-direction: column; align-items: center; gap: 16px; }
  .cs-list { display: flex; flex-direction: column; gap: 14px; flex: 1; overflow: hidden; width: 100%; }
  
  .cs {
    width: 100%; height: 96px; border-radius: 8px; overflow: hidden;
    cursor: pointer; position: relative; 
    transition: all .4s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 2px 8px rgba(10,22,40,0.05);
    background: var(--brand);
  }
  .cs img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    opacity: 0.45; transition: all .4s var(--ease);
  }
  .cs::after {
    content: ""; position: absolute; inset: 0; transition: all .4s var(--ease);
    box-shadow: inset 0 0 0 0 transparent;
    border-radius: 8px; pointer-events: none; z-index: 2;
  }
  .cs.is-active, .cs:hover {
    box-shadow: 0 8px 24px rgba(0,212,255,0.3);
  }
  .cs.is-active::after, .cs:hover::after {
    box-shadow: inset 0 0 0 3px var(--brand-3); /* Inset border prevents right edge cut-off */
  }
  .cs.is-active img, .cs:hover img { opacity: 1; transform: scale(1.05); }
  
  .cs-arrow {
    width: 44px; height: 44px; border-radius: 50%;
    background: #ffffff; border: 1px solid #e2e8f0;
    color: var(--brand); font-size: 16px; transition: all .3s var(--ease);
    box-shadow: 0 4px 12px rgba(10,22,40,0.04); display: grid; place-items: center;
  }
  .cs-arrow:hover { background: var(--brand); color: #fff; border-color: var(--brand); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(10,22,40,0.1); }
  
  .cases-main {
    margin: 0; position: relative; border-radius: 12px; overflow: hidden;
    border: 1px solid #e2e8f0; box-shadow: 0 24px 60px rgba(10,22,40,0.12);
    background: var(--gradient-dark); aspect-ratio: 16/9; max-height: 600px;
  }
  .cases-main img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    transition: transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s ease;
  }
  .cases-main:hover img { transform: scale(1.04); }
  
  .cases-main figcaption {
    position: absolute; left: 0; right: 0; bottom: 0; padding: 60px 50px 40px;
    background: linear-gradient(180deg, transparent 0%, rgba(10,22,40,.7) 40%, rgba(10,22,40,0.95) 100%);
    color: #fff; transition: opacity 0.4s ease, transform 0.4s ease;
  }
  .cases-main .tag {
    display: inline-block; padding: 6px 14px; border-radius: 4px;
    background: var(--gradient-water); color: #fff;
    font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
    margin-bottom: 16px; box-shadow: 0 4px 12px rgba(0,212,255,0.3);
  }
  .cases-main h3 { margin: 0; font-family: 'Inter', sans-serif; font-weight: 800; font-size: 32px; letter-spacing: -0.5px; line-height: 1.3; text-shadow: 0 2px 10px rgba(0,0,0,0.5); }
  .cases-main em { font-style: normal; color: #cbd5e1; font-weight: 400; font-size: 20px; display: block; margin-top: 4px; }
  
  /* JS Transition Classes */
  .cases-main.is-transitioning img { opacity: 0; transform: scale(1.05); transition: opacity 0.3s ease, transform 0.3s ease; }
  .cases-main.is-transitioning figcaption { opacity: 0; transform: translateY(10px); transition: opacity 0.3s ease, transform 0.3s ease; }
  
  .cases-desc {
    max-width: 900px; margin: 0 auto; text-align: center;
    color: var(--muted); font-size: 15px; line-height: 1.85; padding: 0 20px;
  }
  .cases-desc::first-line { color: #0f172a; font-weight: 600; }
  
  @media (max-width: 1024px) {
    .cases-wrap { grid-template-columns: 120px 1fr; gap: 30px; }
    .cs { height: 80px; }
    .cases-main h3 { font-size: 24px; }
    .cases-main em { font-size: 16px; }
    .cases-main figcaption { padding: 40px 30px 30px; }
  }
  @media (max-width: 768px) {
    .cases { padding: 80px 0; }
    .cases-wrap { grid-template-columns: 1fr; gap: 20px; margin-bottom: 20px; }
    .cases-side { flex-direction: row; overflow-x: auto; padding-bottom: 10px; gap: 12px; scrollbar-width: none; }
    .cases-side::-webkit-scrollbar { display: none; }
    .cs-list { flex-direction: row; gap: 12px; width: auto; overflow: visible; padding: 4px 0; }
    .cs { flex: 0 0 140px; height: 90px; transform: none !important; }
    .cs.is-active { transform: translateY(-4px) !important; }
    .cs-arrow { display: none; }
    .cases-main { aspect-ratio: 4/3; max-height: none; }
    .cases-main figcaption { padding: 40px 24px 24px; }
    .cases-main h3 { font-size: 20px; }
    .cases-main em { font-size: 14px; }
    .cases-desc { text-align: left; }
  }
  
  /* ==========================================================================
     06 CORE STRENGTHS
     ========================================================================== */
  .advantages { background: #0a1628; padding: 100px 0; }

  /* 标题区域 */
  .sec-head { text-align: center; margin: 0 auto 60px; max-width: 1100px; }
  .sec-title.solid { font-family: 'Inter', sans-serif; font-weight: 800; font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.5px; text-transform: uppercase; margin: 0; color: #0f172a; line-height: 1.2; }
  .sec-hr { display: block; width: 48px; height: 4px; background: #3b82f6; margin: 18px auto 22px; border-radius: 2px; }
  .sec-sub { color: #64748b; font-size: 15px; letter-spacing: .02em; margin: 0; }

  /* 针对深色背景调整字体颜色 */
  .advantages .sec-title.solid { color: #ffffff; }
  .advantages .sec-sub { color: #94a3b8; }

  /* ========== 4列网格布局 ========== */
  .cs-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 44px; }

  /* ========== 卡片核心样式 ========== */
 
.cs-card {
  background: #fff; border: 1px solid #e2e8f0; border-radius: 4px;
  padding: 40px 30px 36px; text-align: center;
  position: relative !important; overflow: hidden;
  transition: transform .4s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow .4s cubic-bezier(0.2, 0.7, 0.2, 1), border-color .35s;
}

.cs-card::before {
  content: ''; position: absolute; top: 0; left: 0; bottom: 0;
  width: 4px; /* 左侧加粗线条 */
  background: var(--brand-3); 
  transform: scaleY(0); transform-origin: top;
  transition: transform .4s ease;
  z-index: 2;
}

.cs-card:hover {
  transform: translateY(-6px) !important;
  border-color: var(--brand-3) !important; /* 基础边框变蓝 */
  /* 关键修改：通过 0 0 0 1px var(--brand-3) 增加一圈视觉轮廓，使边缘更加醒目 */
  box-shadow: 0 16px 40px rgba(0, 136, 255, 0.12), 0 0 0 1px var(--brand-3) !important; 
}
.cs-card:hover::before { transform: scaleY(1); }

  /* ========== 图标外层圆形 ========== */
  .cs-icon {
    display: flex; align-items: center; justify-content: center;
    position: relative; padding: 8px; background: #fff;
    border: 2px solid rgba(0, 136, 255, 0.15); /* 浅亮蓝色边框 */
    border-radius: 50%; width: 116px !important; height: 116px !important;
    margin: 0 auto 28px !important;
    transition: border-color .3s ease, background .3s ease;
  }
  
  .cs-card:hover .cs-icon {
    border-color: var(--brand-3); /* 悬浮时边框变为明显的高亮蓝 */
    background: rgba(0, 136, 255, 0.06); /* 悬浮时背景带有轻微高亮蓝 */
  }

  /* ========== 内部 SVG 图标 ========== */
  .cs-icon svg {
    width: 100px; height: 100px;
    stroke: var(--brand-3) !important; /* SVG 线条默认使用明显的高亮蓝 */
    transition: transform .5s cubic-bezier(0.2, 0.7, 0.2, 1);
  }
  .cs-icon svg circle { stroke: rgba(0, 136, 255, 0.22) !important; } /* SVG内部小圆圈的颜色调和 */
  .cs-card:hover .cs-icon svg { transform: scale(1.04); }

  /* ========== 文字排版 ========== */
  .cs-card h3 {
    font-family: 'Inter', sans-serif; font-weight: 600; font-size: 18px;
    color: #0f172a; margin: 0 0 16px; letter-spacing: 0;
  }
  .cs-card p {
    font-size: 13.5px; color: #64748b; line-height: 1.75; margin: 0;
    text-align: left;
  }

  /* ========== 响应式适配（移动端变双列） ========== */
  @media (max-width: 1024px) { .cs-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 640px) { .cs-grid { grid-template-columns: 1fr; } }
  
  /* ==========================================================================
     07 ABOUT US
     ========================================================================== */
  .about{padding:120px 0;background:#ffffff;}
  .about-body{
    display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center;
    margin-top:40px;
  }
  .about-media{position:relative;border-radius:var(--radius);overflow:hidden}
  .about-media img{width:100%;height:auto;display:block;border-radius:var(--radius)}
  .about-badge{
    position:absolute;left:24px;bottom:24px;z-index:2;
    padding:20px 28px;background:var(--brand);border-radius:var(--radius);
    color:#fff;box-shadow:0 12px 28px rgba(10,22,40,0.15);
    display:flex;align-items:center;gap:16px;
  }
  .ab-num{
    font-family:'Inter',sans-serif;font-weight:400;font-size:44px;line-height:1;letter-spacing:0;
  }
  .ab-num em{font-style:normal;font-size:26px;margin-left:2px;color:rgba(255,255,255,.7)}
  .ab-txt{font-size:13px;line-height:1.4;letter-spacing:.02em;color:rgba(255,255,255,.85)}
  .about-text{color:var(--muted);font-size:14.5px;line-height:1.85}
  .about-lead{color:var(--brand);font-size:17px;font-weight:400;line-height:1.7;margin:0 0 20px}
  .about-text p{margin:0 0 14px}
  .btn-ghost{
    display:inline-flex;align-items:center;gap:6px;margin-top:14px;
    padding:12px 24px;border:1px solid var(--brand);
    color:var(--brand);font-size:13px;font-weight:500;text-transform:uppercase;letter-spacing:.04em;
    border-radius:var(--radius-pill);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .btn-ghost:hover{background:var(--brand);color:#fff;}
  @media (max-width:1024px){.about-body{grid-template-columns:1fr;gap:40px;}}
  
  
  /* ==========================================================================
     08 SERVICE PROCESS (New Horizontal Layout)
     ========================================================================== */
  .process-section {
    padding: 100px 0;
    background: var(--bg-2);
    overflow: hidden;
  }
  .process-line {
    position: relative;
    max-width: var(--wrap-wide);
    margin: 0 auto;
  }
  .process-line::before {
    content: ''; position: absolute;
    top: 100px; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0,212,255,0.3), var(--brand-3), rgba(0,212,255,0.3), transparent);
    z-index: 0;
  }
  
  .process-track-wrapper {
    position: relative;
    padding: 0 60px;
  }
  
  
  
  
  .process-track {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 10px 4px 40px 4px;
    scrollbar-width: none; /* Hide scrollbar for cleaner look, relying on dots/touch */
  }
  .process-track::-webkit-scrollbar { display: none; }
  
  .step-card {
    flex: 0 0 320px;
    scroll-snap-align: center;
    background: #ffffff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(10,22,40,0.06);
    border: 1px solid #e2e8f0;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
    position: relative;
    z-index: 1;
  }
  .step-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(10,22,40,0.1);
    border-color: rgba(0,212,255,0.3);
  }
  
  .step-card-img {
    width: 100%; height: 180px; overflow: hidden; position: relative;
  }
  .step-card-img img {
    width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease);
  }
  .step-card:hover .step-card-img img { transform: scale(1.05); }
  
  .step-card-body { padding: 24px; }
  .step-card-top {
    display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
  }
  .step-num {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--brand-3); color: #fff;
    font-family: 'Inter', sans-serif; font-weight: 700; font-size: 15px;
    display: grid; place-items: center; box-shadow: 0 4px 12px rgba(0,212,255,0.3);
  }
  .step-duration {
    padding: 4px 12px; background: #f1f5f9; color: var(--brand);
    font-size: 11px; font-weight: 600; border-radius: 20px; letter-spacing: 0.5px; text-transform: uppercase;
  }
  .step-card-body h3 {
    font-family: 'Inter', sans-serif; font-size: 18px; font-weight: 700;
    color: var(--brand); margin: 0 0 10px; line-height: 1.4;
  }
  .step-card-body p {
    font-size: 14px; color: var(--muted); line-height: 1.7; margin: 0;
  }
  
  @media (max-width: 768px) {
    .process-section { padding: 80px 0; }
    .process-line::before { display: none; } /* Hide line on mobile */
    .process-track-wrapper { padding: 0 20px; }
    .step-card { flex: 0 0 85vw; }
    .step-card-img { height: 160px; }
  }
  
  /* Process Arrows */
  .process-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    color: var(--brand);
    display: grid;
    place-items: center;
    cursor: pointer;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(10,22,40,0.06);
    transition: all 0.3s var(--ease);
  }
  .process-arrow:hover {
    background: var(--brand);
    color: #fff;
    border-color: var(--brand);
    box-shadow: 0 8px 20px rgba(10,22,40,0.15);
    transform: translateY(-50%) scale(1.05);
  }
  .process-arrow svg { width: 20px; height: 20px; }
  .process-arrow.prev-arrow { left: 0; }
  .process-arrow.next-arrow { right: 0; }
  
  @media (max-width: 1024px) {
    .process-arrow { display: none; }
  }
  
  /* ==========================================================================
     09 NEWS
     ========================================================================== */
  .news{padding:100px 0;background:linear-gradient(180deg, #ffffff 0%, var(--bg-2) 100%);}
  .news-grid{
    display:flex;flex-direction:column;gap:24px;
  }
  .news-card{
    display:grid;grid-template-columns:320px 1fr;gap:0;
    background:#ffffff;border:1px solid #e2e8f0;border-radius:var(--radius);
    overflow:hidden;
    transition:box-shadow .35s var(--ease),border-color .35s var(--ease);
    box-shadow:0 4px 16px rgba(10,22,40,0.04);
  }
  .news-card:hover{border-color:rgba(0,212,255,0.3);box-shadow:0 12px 32px rgba(0,136,255,0.06);}
  .news-media{
    height:100%;min-height:220px;background-size:cover;background-position:center;
    transition:transform .6s var(--ease);
  }
  .news-card:hover .news-media{transform:scale(1.04)}
  .news-body{
    padding:30px 34px;position:relative;
    display:flex;flex-direction:column;justify-content:center;gap:12px;
  }
  .news-date{
    display:inline-flex;align-items:center;gap:10px;
    color:var(--brand);font-family:'Inter',sans-serif;font-weight:600;
    font-size:12px;letter-spacing:0.1em;text-transform:uppercase;
  }
  .news-date em{font-style:normal;}
  .news-date span{color:var(--muted);font-weight:400;letter-spacing:0;}
  .news-body h3{
    margin:0;font-size:18px;font-weight:600;line-height:1.45;
  }
  .news-body h3 a{color:var(--brand);transition:color .2s var(--ease)}
  .news-body p{color:var(--muted);font-size:14px;line-height:1.75;margin:0;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-more{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand);font-size:13px;font-weight:500;letter-spacing:.04em;
    transition:color .2s var(--ease);
    margin-top:4px;text-transform:uppercase;
  }
  @media (max-width:1024px){
    .news-card{grid-template-columns:260px 1fr}
  }
  @media (max-width:768px){
    .news-card{grid-template-columns:1fr}
    .news-media{min-height:200px}
    .news-body{padding:26px 24px}
  }
  
  
  /* ==========================================================================
     10 CONTACT
     ========================================================================== */
  .contact{background:#ffffff;padding:100px 0;}
  .contact-split{display:grid;grid-template-columns:1fr 1.1fr;min-height:600px;gap:0;max-width:1440px;width:95%;margin:0 auto;background:#ffffff;border:1px solid #e2e8f0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 12px 40px rgba(10,22,40,0.08);}
  .contact-info{background:rgba(10, 22, 40, 0.95); backdrop-filter: blur(10px);color:#fff;padding:80px 60px;position:relative;}
  .contact-info-title{font-family:'Inter',sans-serif;font-weight:300;font-size:42px;line-height:1.15;color:#ffffff;margin:0 0 16px;letter-spacing:0;}
  .contact-info-sub{font-size:15px;color:#94a3b8;line-height:1.7;margin:0 0 44px;max-width:420px;}
  .contact-info-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:28px;}
  .ci-row{display:flex;gap:18px;align-items:flex-start;}
  .ci-row svg{width:22px;height:22px;color:var(--brand-3);flex-shrink:0;margin-top:3px;}
  .ci-row > div{display:flex;flex-direction:column;gap:4px;}
  .ci-row em{font-size:11px;letter-spacing:1px;color:#94a3b8;font-weight:600;text-transform:uppercase;font-style:normal;}
  .ci-row span{font-size:14px;color:#ffffff;font-weight:400;}
  
  .contact-form-wrap{padding:70px 60px; display:flex; flex-direction:column; justify-content:center;}
  .contact-form-title{font-family:'Inter',sans-serif;font-weight:400;font-size:28px;color:#0f172a;margin:0 0 8px;text-align:left;letter-spacing:0;}
  .cf-eyebrow{font-size:11px;letter-spacing:1px;color:var(--brand);font-weight:600;margin:0 0 14px;}
  .cf-sub{font-size:13.5px;color:#64748b;margin:0 0 36px;line-height:1.6;}
  .contact-form .cf-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px;}
  .contact-form .cf-full{grid-column:1 / -1;}
  .cf-field{display:flex;flex-direction:column;}
  .cf-lb{color:#475569;font-size:11px;font-weight:600;letter-spacing:1px;margin-bottom:8px;}
  .cf-lb em{color:var(--brand);font-style:normal;margin-left:3px;}
  .cf-field input,.cf-field textarea,.cf-field select{
    background:var(--bg-2);border:1px solid #cbd5e1;border-radius:var(--radius);
    color:#0f172a;font-size:14px;padding:14px 16px;outline:none;
    font-family:inherit;transition:border-color .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
    width:100%;
  }
  .cf-field input::placeholder,.cf-field textarea::placeholder{color:#94a3b8;}
  .cf-field input:focus,.cf-field textarea:focus,.cf-field select:focus{
    border-color:var(--cyan);background:#ffffff;
    box-shadow:0 0 0 3px rgba(0,212,255,0.15);
  }
  .cf-field select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;}
  .cf-field textarea{resize:vertical;min-height:120px;}
  .cf-row-actions{display:flex; justify-content:flex-start; margin-top:30px;}
  .cf-submit{
    background:var(--brand-3);border:none;
    color:#fff;border:0;padding:16px 40px;
    font-family:'Inter',sans-serif;font-weight:600;font-size:13px;letter-spacing:1.5px;
    border-radius:var(--radius);cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;gap:12px;
    transition:all .3s var(--ease);
    text-transform:uppercase;
    height: 52px; /* Fixed height to prevent any layout stretching */
  }
  .cf-submit svg { width: 18px !important; height: 18px !important; flex-shrink: 0; transition: transform .3s var(--ease); }
  .cf-submit:hover{transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,212,255,0.3);}
  .cf-submit:hover svg{transform: translateX(4px);}
  
  @media (max-width:1024px){
    .contact-split{grid-template-columns:1fr;gap:0;}
    .contact-info{padding:60px 40px;}
    .contact-form-wrap{padding:50px 40px;}
  }
  @media (max-width:640px){
    .contact-info{padding:50px 24px;}
    .contact-form-wrap{padding:40px 24px;}
    .contact-form .cf-row{grid-template-columns:1fr;gap:16px;}
    .contact-info-title{font-size:32px;}
  }
  
  /* ==========================================================================
     11 FOOTER (High-End Redesign)
     ========================================================================== */
  .footer {
    background: var(--gradient-dark); 
    color: #8b95a5;
    padding: 0;
    position: relative;
    border-top: 1px solid #e2e8f0;
  }
  .ft-top-line { display: none; }
  
  .footer .ft-grid {
    display: grid;
    grid-template-columns: 3fr 1.5fr 1.5fr 2.5fr;
    gap: 40px 60px;
    padding: 100px 0 80px;
    align-items: flex-start;
  }
  
  
  
  
  
  
  .footer .ft-brand p {
    font-size: 14px;
    line-height: 1.85;
    color: #64748b;
    margin: 0;
    max-width: 340px;
  }
  
  .footer .ft-col h4 {
    margin: 0 0 28px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.15em;
    color: #ffffff;
    text-transform: uppercase;
  }
  .footer .ft-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .footer .ft-col ul li a {
    color: #8b95a5;
    font-size: 14px;
    text-decoration: none;
    transition: color .2s var(--ease), transform .2s var(--ease);
    display: inline-block;
  }
  .footer .ft-col ul li a:hover {
    color: #ffffff;
    transform: translateX(4px);
  }
  .footer .ft-col ul li a.more {
    color: #ffffff;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: 2px;
    margin-top: 6px;
  }
  .footer .ft-col ul li a.more:hover {
    border-color: #ffffff;
    transform: none;
  }
  
  .footer .ft-contact {
    display: flex;
    flex-direction: column;
    gap: 22px;
  }
  .footer .ft-contact li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 14px;
    line-height: 1.6;
    color: #8b95a5;
  }
  .footer .ft-contact li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
    color: #ffffff;
    opacity: 0.3;
  }
  
  .footer .ft-bottom {
    background: #020408;
    border-top: 1px solid rgba(255,255,255,0.03);
    padding: 24px 0;
  }
  .footer .ft-bottom .wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #475569;
    font-size: 13px;
  }
  .footer .ft-bottom .ft-links {
    display: flex;
    gap: 28px;
  }
  .footer .ft-bottom .ft-links a {
    color: #475569;
    text-decoration: none;
    transition: color .2s var(--ease);
  }
  .footer .ft-bottom .ft-links a:hover {
    color: #ffffff;
  }
  
  @media (max-width: 1024px) {
    .footer .ft-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 60px 40px;
      padding: 80px 0 60px;
    }
  }
  @media (max-width: 640px) {
    .footer .ft-grid {
      grid-template-columns: 1fr;
      gap: 0px;
      padding: 40px 0 20px;
    }
    /* Footer Mobile Accordion */
    .footer .ft-col h4 {
      margin: 0; padding: 20px 0;
      display: flex; justify-content: space-between; align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      cursor: pointer;
    }
    .footer .ft-col h4::after {
      content: '+'; font-size: 20px; font-weight: 300; transition: transform 0.3s var(--ease);
    }
    .footer .ft-col.is-open h4::after { transform: rotate(45deg); }
    .footer .ft-col ul { display: none; padding: 16px 0 20px; }
    .footer .ft-col.is-open ul { display: flex; }
    
    /* Brand column exceptions */
    .footer .ft-brand { padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,0.06); margin-bottom: 10px; }
    .footer .ft-brand h4 { display: none; }
    .footer .ft-brand p { font-size: 13px; }
  
    .footer .ft-bottom .wrap {
      flex-direction: column;
      gap: 16px;
      text-align: center;
    }
  }
  
  /* ==========================================================================
     Back to top & Dropdown
     ========================================================================== */
  .to-top{
    position:fixed;right:30px;bottom:30px;z-index:99;
    width:46px;height:46px;border-radius:var(--radius);
    background:var(--brand-3);
    color:#fff;display:grid;place-items:center;
    box-shadow:0 12px 28px rgba(10,22,40,0.12);
    opacity:0;pointer-events:none;transform:translateY(20px);
    transition:all .3s cubic-bezier(0.2, 0.8, 0.2, 1);
    text-decoration:none;
  }
  .to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
  .to-top:hover{background:var(--brand-3); transform:translateY(-4px); box-shadow: 0 12px 24px rgba(0,212,255,0.3);}
  
  .nav-dd{position:relative;}
  .nav-dd > a{display:inline-flex;align-items:center;gap:6px;}
  .nav-dd > a .dd-arrow{width:12px;height:12px;opacity:.7;transition:transform .3s var(--ease);}
  .nav-dd:hover > a .dd-arrow{transform:rotate(180deg);opacity:1;}
  .nav-dd .dd-menu{
    position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(12px);
    min-width:220px;padding:10px 0;
    background:rgba(10, 22, 40, 0.98); backdrop-filter: blur(10px);;
    border:1px solid rgba(255,255,255,.08);
    border-radius:var(--radius);
    box-shadow:0 20px 50px rgba(0,0,0,.5);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility 0s linear .25s;
    z-index:200;
  }
  .nav-dd:hover .dd-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);}
  .nav-dd .dd-menu a{
    display:block;padding:11px 22px;
    color:rgba(255,255,255,.8);
    font-size:13px;font-weight:400;letter-spacing:0;
    text-decoration:none;
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .nav-dd .dd-menu a:hover{color:#fff;background:rgba(255,255,255,0.05);}
  .nav-dd .dd-menu a::after{display:none;}
  @media (max-width:1024px){
    .nav-dd{width:100%;}
    .nav-dd > a{justify-content:space-between;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.06);}
    .nav-dd .dd-menu{
      position:static;transform:none;min-width:0;padding:0 0 8px 18px;
      background:transparent;border:0;box-shadow:none;
      opacity:1;visibility:visible;pointer-events:auto;
      display:none;
    }
    .nav-dd.is-open .dd-menu{display:block;}
    .nav-dd.is-open > a .dd-arrow{transform:rotate(180deg);}
  }
  
  
  /* ==========================================================================
     12 MOBILE RESPONSIVE FIXES (Comprehensive Core Layout Fix)
     ========================================================================== */
  @media (max-width: 1280px) {
    .wrap { padding: 0 40px !important; }
    .nav-inner { padding: 0 40px !important; }
  }
  
  @media (max-width: 1024px) {
    .wrap { padding: 0 30px !important; }
    .nav-inner { 
      padding: 0 20px !important; 
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .nav-contacts { display: none !important; }
    .nav-burger { display: flex !important; margin-left: auto; z-index: 1001; }
    
    /* Mobile Menu Container */
    .nav-bottom {
      display: none !important;
    }
    .nav-bottom.is-open {
      display: block !important;
      position: absolute;
      top: 100%; /* Perfectly aligns exactly under the header */
      left: 0;
      right: 0;
      height: 100vh;
      background: var(--gradient-dark);
      padding: 20px 0 120px 0; /* padding bottom to allow scrolling past last item */
      overflow-y: auto;
      z-index: 1000;
      border-top: 1px solid rgba(255,255,255,0.08);
    }
    
    .nav-bottom.is-open .nav-links {
      display: flex !important;
      flex-direction: column;
      padding: 0 30px;
      gap: 0;
    }
    
    .nav-bottom.is-open .nav-links > a, 
    .nav-bottom.is-open .nav-dd > a {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
      color: #e2e8f0;
      font-size: 16px;
      font-weight: 500;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      text-decoration: none;
    }
    .nav-bottom.is-open .nav-links > a::after { display: none; }
    
    .nav-dd { width: 100%; position: static; }
    .nav-dd .dd-menu {
      position: static;
      transform: none;
      min-width: 100%;
      padding: 0;
      background: transparent;
      border: none;
      box-shadow: none;
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      display: none; 
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    
    .nav-dd.is-open .dd-menu {
      display: flex;
      flex-direction: column;
      padding: 10px 0 20px 20px;
    }

    .nav-dd:hover .dd-menu { 
      transform: none !important; 
      left: auto;
    }

    .nav-dd.is-open .dd-menu a {
      color: #94a3b8;
      padding: 12px 0;
      font-size: 14.5px;
      background: transparent;
    }
    .nav-dd.is-open .dd-menu a:hover {
      color: #ffffff;
      background: transparent;
      padding-left: 0;
    }
    
    .nav-dd > a .dd-arrow { transition: transform 0.3s var(--ease); }
    .nav-dd.is-open > a .dd-arrow { transform: rotate(180deg); color: #ffffff; }
    
    .nav-bottom.is-open .btn-cta {
      display: flex;
      margin: 40px 30px;
      justify-content: center;
    }
  
    /* Sections padding */
    .services, .products, .advantages, .about, .process-section, .news, .contact {
      padding: 80px 0 !important;
    }
    .sec-head { margin-bottom: 40px !important; }
    .contact-split { width: 90%; }
  }
  
  @media (max-width: 768px) {
    .wrap { padding: 0 20px !important; }
    .nav-inner { padding: 0 20px !important; }
    
    .hero-title { font-size: clamp(32px, 8vw, 48px) !important; line-height: 1.15; }
    .hero-caption {
      bottom: 90px !important;
      left: 20px !important;
      right: 20px !important;
      padding: 16px 20px !important;
      min-height: auto !important;
    }
    .hero-caption-line { 
      left: 20px !important; right: 10px !important; top: 16px !important; 
      font-size: 11px !important; letter-spacing: 0.1em !important; 
    }
    .hero-caption-line span:nth-child(2), 
    .hero-caption-line span:nth-child(3) { display: none !important; }
    .hero-controls { bottom: 30px !important; gap: 16px !important; }
    .hero-arrow { width: 36px !important; height: 36px !important; }
    .hero-scroll { display: none !important; }
    
    .services, .products, .advantages, .about, .process-section, .news, .contact {
      padding: 60px 0 !important;
    }
    .about-badge { left: 16px !important; bottom: 16px !important; padding: 14px 20px !important; gap: 12px !important; }
    .ab-num { font-size: 32px !important; }
    .ab-num em { font-size: 20px !important; }
    .ab-txt { font-size: 11px !important; }
    .contact-split { width: 100%; border-radius: 0; border-left: none; border-right: none; }
  }


/* 右侧悬浮客服工具条样式 */
.global-floating-sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.global-floating-sidebar .gfs-item {
    position: relative;
    width: 48px;
    height: 48px;
    background-color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
    color: #333333;
    text-decoration: none;
}

.global-floating-sidebar .gfs-item svg {
    width: 22px;
    height: 22px;
}

/* WhatsApp 颜色改为与 top 按钮一致的蓝色 */
.global-floating-sidebar .gfs-item.whatsapp {
    background-color: #007aff;
    color: #ffffff;
}

/* 悬停动效 */
.global-floating-sidebar .gfs-item:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* 文字提示气泡 (Tooltip) */
.global-floating-sidebar .gfs-item .gfs-tooltip {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    background-color: #1e293b;
    color: #ffffff;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.global-floating-sidebar .gfs-item .gfs-tooltip::after {
    content: '';
    position: absolute;
    right: -4px;
    top: 50%;
    transform: translateY(-50%);
    border-width: 4px 0 4px 4px;
    border-style: solid;
    border-color: transparent transparent transparent #1e293b;
}

.global-floating-sidebar .gfs-item:hover .gfs-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

@media (max-width: 768px) {
    .global-floating-sidebar {
        right: 12px;
    }
    .global-floating-sidebar .gfs-item {
        width: 40px;
        height: 40px;
    }
    .global-floating-sidebar .gfs-item svg {
        width: 18px;
        height: 18px;
    }
    .global-floating-sidebar .gfs-tooltip {
        display: none;
    }
}