/* ===== Reset & Variables ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#0050a0;        /* brand navy (from logo) */
  --navy-dark:#0a3d74;
  --cyan:#00b0f0;        /* brand bright blue */
  --ink:#1a2733;         /* text */
  --gray:#5a6b7a;
  --line:#e6ebf0;
  --bg-light:#f4f7fa;
  --dark:#0b1f33;        /* dark section bg */
  --white:#fff;
  /* carousel gutter: lines the first card up with the .container column.
     Used for BOTH the padding and scroll-padding-left so the two never drift apart. */
  --gutter:max(20px,calc(50vw - 600px));
}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);line-height:1.6;background:#fff}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.t-c{text-align:center}
.f-b{font-weight:700}
.flex{display:flex}
.j-c-s-b{justify-content:space-between}
.j-c-c{justify-content:center}
.a-i-c{align-items:center}
.f-w-w{flex-wrap:wrap}

/* ===== Buttons ===== */
.btn{display:inline-block;padding:12px 30px;background:var(--navy);color:#fff;font-size:16px;font-weight:600;border-radius:3px;transition:.3s;border:none;cursor:pointer}
.btn:hover{background:var(--cyan)}

/* ===== Top bar ===== */
.top-bar{background:#2a3540;color:#fff;font-size:14px}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;min-height:40px;flex-wrap:wrap;gap:6px}
.top-bar a{color:#fff;opacity:.92}
.top-bar a:hover{opacity:1;color:var(--cyan)}
.top-bar .social{display:flex;gap:4px;align-items:center}
.top-bar .social a{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;transition:.25s}
.top-bar .social a:hover{background:var(--navy)}
.top-bar .social svg{width:16px;height:16px;fill:#fff}

/* ===== Header / Nav ===== */
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.sticky{position:sticky;top:0;z-index:900;box-shadow:0 2px 12px rgba(11,31,51,.08)}
.main-bar{display:flex;align-items:center;justify-content:space-between;height:78px;position:relative}
.logo{flex:0 0 auto}
.logo img{height:44px;width:auto}
.navbar{flex:1 1 auto;display:flex;align-items:center;justify-content:center;min-width:0}
.navbar>ul{display:flex;width:100%;justify-content:space-evenly}
.navbar>ul>li{position:relative}
.navbar>ul>li>a{display:block;padding:10px 14px;font-size:15px;font-weight:600;color:var(--ink);transition:.25s;text-align:center}
.navbar>ul>li>a:hover,.navbar>ul>li.active>a{color:var(--navy)}
.dropdown{position:absolute;top:100%;left:0;min-width:230px;background:#fff;box-shadow:0 12px 30px rgba(11,31,51,.15);opacity:0;visibility:hidden;transform:translateY(10px);transition:.28s;z-index:950;padding:8px 0;border-radius:4px}
.navbar li:hover>.dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown li a{display:block;padding:9px 20px;font-size:14px;color:var(--gray);transition:.2s;white-space:nowrap}
.dropdown li a:hover{color:var(--navy);background:var(--bg-light);padding-left:26px}
.dropdown .dropdown{top:0;left:100%}
.dropdown .has-drop>a{display:flex;justify-content:space-between;align-items:center}
.dropdown .has-drop>a::after{content:"▸";margin-left:8px;opacity:.6;font-size:11px}
.nav-cta{flex:0 0 auto;display:inline-block;background:var(--navy);color:#fff;border-radius:4px;padding:11px 24px;font-size:15px;font-weight:600;white-space:nowrap;transition:.25s}
.nav-cta:hover{background:var(--cyan)}
.navbar-toggle{display:none;background:none;border:none;cursor:pointer;width:42px;height:42px}
.navbar-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px auto;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--dark)}
.hero .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,20,36,.90) 0%,rgba(6,20,36,.72) 46%,rgba(6,20,36,.30) 100%)}
.hero .inner{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:94px 20px 86px;color:#fff}
.hero .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--cyan);border:1px solid rgba(0,176,240,.45);border-radius:20px;padding:6px 16px;margin-bottom:22px}
.hero h1{font-size:48px;font-weight:800;line-height:1.12;max-width:780px;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero .lede{font-size:18px;line-height:1.7;color:#cfe3f5;max-width:660px;margin-bottom:26px}
.hero .usp{display:flex;flex-wrap:wrap;gap:11px 28px;margin-bottom:34px;max-width:760px}
.hero .usp div{font-size:16px;font-weight:600;display:flex;align-items:center}
.hero .usp div span{color:var(--cyan);font-weight:800;margin-right:9px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.btn-lg{padding:15px 38px;font-size:17px}
.btn-primary{background:var(--cyan);color:#063049}
.btn-primary:hover{background:#fff;color:#063049}
.btn-ghost{background:transparent;border:2px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:#fff;border-color:#fff;color:var(--dark)}

/* ===== Trust band (certification badges) ===== */
.trust-band{background:var(--bg-light);border-bottom:1px solid var(--line);padding:22px 0}
.trust-band .container{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px 16px}
.trust-band .label{font-size:13px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--gray)}
.badge{display:inline-flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:6px;padding:9px 16px;font-size:14px;font-weight:700;color:var(--ink);transition:.25s}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);margin-right:9px;flex:0 0 7px}
.badge:hover{border-color:var(--navy);color:var(--navy);box-shadow:0 6px 18px rgba(11,31,51,.08)}

/* ===== Section titles ===== */
.sec-eyebrow{color:var(--cyan);font-size:17px;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.sec-title{font-size:32px;font-weight:800;margin-top:8px;color:var(--ink)}
.sec-title.center{text-align:center}
.sec-sub{font-size:16px;line-height:1.7;color:var(--gray);margin-top:14px;max-width:680px}
.t-c .sec-sub{margin-left:auto;margin-right:auto}

/* ===== Capability cards ===== */
.i-service{padding:72px 0}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.cap-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.3s}
.cap-card:hover{border-color:var(--navy);box-shadow:0 14px 34px rgba(11,31,51,.12);transform:translateY(-5px)}
.cap-media{display:block;overflow:hidden}
.cap-media img{width:100%;height:176px;object-fit:cover;transition:.5s}
.cap-card:hover .cap-media img{transform:scale(1.06)}
.cap-body{padding:20px;display:flex;flex-direction:column;gap:11px;flex:1}
.cap-body h3{font-size:19px;font-weight:800;line-height:1.3;color:var(--ink)}
.cap-body h3 a:hover{color:var(--navy)}
.cap-body .spec{font-size:14px;color:var(--gray);line-height:1.6;padding-bottom:13px;border-bottom:1px solid var(--line)}
.cap-body .spec b{display:block;font-size:17px;font-weight:800;color:var(--navy);margin-bottom:3px}
.cap-body .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}
.cap-body .tags span{font-size:12px;font-weight:600;color:var(--navy);background:var(--bg-light);border:1px solid var(--line);border-radius:20px;padding:3px 10px}

/* ===== Ordering process ===== */
.i-process{padding:72px 0;background:var(--bg-light)}
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.step{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px 26px 26px;transition:.3s}
.step:hover{border-color:var(--navy);box-shadow:0 14px 32px rgba(11,31,51,.10);transform:translateY(-4px)}
.step .n{width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;margin-bottom:16px}
.step h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:8px}
.step p{font-size:15px;line-height:1.7;color:var(--gray);margin:0}

/* ===== Dark stats section ===== */
.i-hezuo{background:var(--dark);color:#fff;padding:70px 0;position:relative;overflow:hidden}
.i-hezuo::before{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:rgba(0,176,240,.12)}
.i-hezuo::after{content:"";position:absolute;left:-60px;bottom:-120px;width:260px;height:260px;border-radius:50%;background:rgba(0,80,160,.18)}
.i-hezuo .container{position:relative;z-index:2}
.i-hezuo .lead{color:var(--cyan);font-weight:700;letter-spacing:1px}
.i-hezuo h2{font-size:34px;font-weight:800;margin:14px 0 10px}
.i-hezuo .sub{font-size:20px;font-weight:600;color:#cfe3f5}
.i-hezuo .note{margin-top:16px;color:#9fc3e0;font-size:18px}
.stats{display:flex;gap:20px;margin-top:42px;flex-wrap:wrap}
.stats .item{flex:1;min-width:200px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:24px;text-align:center}
.stats .num{font-size:40px;font-weight:800;color:var(--cyan);line-height:1}
.stats .num sup{font-size:22px}
.stats .desc{font-size:15px;color:#d5e5f2;margin-top:10px}

/* ===== Carousel (shared by Products and Workshop) ===== */
.carousel-viewport{overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding:0 var(--gutter) 18px;scroll-padding-left:var(--gutter)}
.carousel-viewport::-webkit-scrollbar{height:8px}
.carousel-viewport::-webkit-scrollbar-track{background:var(--bg-light);border-radius:4px}
.carousel-viewport::-webkit-scrollbar-thumb{background:#c3d2e0;border-radius:4px}
.carousel-viewport::-webkit-scrollbar-thumb:hover{background:var(--navy)}
.carousel-track{display:flex;gap:22px;width:max-content}
.carousel-nav{display:flex;gap:10px;flex:0 0 auto}
.carousel-nav button{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:22px;line-height:1;cursor:pointer;transition:.25s;display:flex;align-items:center;justify-content:center}
.carousel-nav button:hover:not(:disabled){background:var(--navy);color:#fff;border-color:var(--navy)}
.carousel-nav button:disabled{opacity:.35;cursor:default}
/* on a dark section the controls invert */
.on-dark .carousel-viewport::-webkit-scrollbar-track{background:rgba(255,255,255,.10)}
.on-dark .carousel-viewport::-webkit-scrollbar-thumb{background:rgba(255,255,255,.30)}
.on-dark .carousel-viewport::-webkit-scrollbar-thumb:hover{background:var(--cyan)}
.on-dark .carousel-nav button{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.on-dark .carousel-nav button:hover:not(:disabled){background:var(--cyan);border-color:var(--cyan);color:#063049}

/* ===== Products ===== */
.i-products{padding:74px 0}
.prod-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.prod-intro{flex:1 1 520px;min-width:0}
.prod-head .carousel-nav{padding-bottom:4px}
.i-products .carousel-viewport{margin-top:42px}
.prod-card{flex:0 0 300px;scroll-snap-align:start;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.3s}
.prod-card:hover{border-color:var(--navy);box-shadow:0 14px 34px rgba(11,31,51,.12);transform:translateY(-5px)}
.prod-card img{width:100%;height:220px;object-fit:cover}
.prod-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.prod-card h3{font-size:17px;font-weight:800;line-height:1.35;color:var(--ink)}
.prod-card .meta{font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:var(--navy)}
.prod-card .note{font-size:14px;line-height:1.6;color:var(--gray);margin-top:auto}

/* ===== Workshop / equipment carousel (inside the dark stats section) ===== */
.equip-head{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-top:54px}
.equip-title{font-size:20px;font-weight:800;color:#fff}
.i-hezuo .carousel-viewport{margin-top:22px}
.equip-card{flex:0 0 330px;scroll-snap-align:start;margin:0;border-radius:10px;overflow:hidden;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);transition:.3s}
.equip-card:hover{border-color:var(--cyan);transform:translateY(-5px)}
.equip-card img{width:100%;height:230px;object-fit:cover;display:block}
.equip-card figcaption{padding:13px 18px;font-size:14px;font-weight:600;color:#cfe3f5}

/* ===== Cases ===== */
.i-cases{padding:70px 0;background:var(--bg-light)}
.cases-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.cases-head h2{font-size:32px;font-weight:800}
.cases-head .sub{font-size:16px;color:var(--gray);margin-top:9px;max-width:640px}
.cases-more{margin-top:36px;text-align:center}
.cases-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cases-grid .card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.3s}
.cases-grid .card:hover{transform:translateY(-5px);box-shadow:0 12px 28px rgba(11,31,51,.14);border-color:var(--navy)}
.cases-grid .card img{width:100%;height:190px;object-fit:cover}
.cases-grid .card .body{padding:14px 16px 16px}
.cases-grid .card .name{font-size:14px;font-weight:700;color:var(--ink);line-height:1.4;margin-bottom:10px}
.cases-grid .card .chips{display:flex;flex-wrap:wrap;gap:6px}
.cases-grid .card .chips span{font-size:11px;font-weight:700;letter-spacing:.3px;text-transform:uppercase;border-radius:4px;padding:3px 8px}
.cases-grid .card .chips .mat{background:rgba(0,80,160,.09);color:var(--navy)}
.cases-grid .card .chips .proc{background:rgba(0,176,240,.14);color:#0d6f96}

/* ===== Specialist industries ===== */
.i-industries{padding:72px 0}
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.ind-card{display:flex;flex-direction:column;gap:12px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:30px 26px;transition:.3s}
.ind-card:hover{border-color:var(--navy);box-shadow:0 14px 34px rgba(11,31,51,.12);transform:translateY(-5px)}
.ind-card h3{font-size:20px;font-weight:800;color:var(--ink)}
.ind-card p{font-size:15px;line-height:1.65;color:var(--gray);margin:0}
.ind-card .go{margin-top:auto;padding-top:8px;font-size:14px;font-weight:700;color:var(--navy);transition:.25s}
.ind-card:hover .go{color:var(--cyan)}

/* ===== Contact strip (replaced the old inquiry form) ===== */
.i-contact{padding:74px 0;background:var(--bg-light);text-align:center}
.i-contact h2{font-size:30px;font-weight:800;color:var(--ink)}
.i-contact p{font-size:16px;color:var(--gray);margin-top:12px}
.contact-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:32px}
.cbtn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:6px;background:#fff;border:1px solid var(--line);font-size:15px;font-weight:700;color:var(--ink);transition:.25s}
.cbtn:hover{border-color:var(--navy);color:var(--navy);box-shadow:0 10px 26px rgba(11,31,51,.10);transform:translateY(-3px)}
.cbtn svg{width:18px;height:18px;fill:currentColor;flex:0 0 auto}
.cbtn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.cbtn.primary:hover{background:var(--cyan);border-color:var(--cyan);color:#063049}
.i-contact .note{font-size:14px;color:var(--gray);margin-top:22px}

/* .field is still used by the comment forms on the inner pages - do not delete */
.field{display:flex;flex-direction:column}
.field label{font-size:14px;font-weight:600;margin-bottom:8px}
.field label span{color:#e23b3b}
.field input,.field textarea{border:1px solid var(--line);border-radius:6px;padding:13px 14px;font-size:15px;font-family:inherit;transition:.25s;background:var(--bg-light)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--navy);background:#fff;box-shadow:0 0 0 3px rgba(0,80,160,.08)}
.field textarea{resize:vertical;min-height:120px}

/* ===== Footer ===== */
.foot{background:#081829;color:#c3d2e0;padding:64px 0 0;font-size:15px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.foot-logo img{height:40px;margin-bottom:16px}
.foot .t-li{font-size:17px;font-weight:700;color:#fff;margin-bottom:18px;text-transform:uppercase}
.foot ul li{margin-bottom:10px}
.foot ul li a{color:#c3d2e0;transition:.2s}
.foot ul li a:hover{color:var(--cyan);padding-left:4px}
.foot .contact{margin-top:22px}
.foot .contact p{margin-bottom:10px;line-height:1.7}
.foot .contact a{color:var(--cyan)}
.foot .social a{display:inline-flex;align-items:center;gap:10px}
.foot .social a svg{width:18px;height:18px;fill:#c3d2e0;flex:0 0 auto;transition:.2s}
.foot .social a:hover svg{fill:var(--cyan)}
.banquan{border-top:1px solid rgba(255,255,255,.1);margin-top:46px;padding:20px 0;text-align:center;font-size:13px;color:#8aa3b8}
.banquan a{color:#8aa3b8}

/* ===== Right floating bar ===== */
.rig-box{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:1000}
.rig-box ul{display:flex;flex-direction:column;gap:6px}
.rig-box li{position:relative}
.rig-box a{display:flex;align-items:center;justify-content:center;width:48px;height:48px;background:var(--navy);color:#fff;border-radius:8px 0 0 8px;transition:.25s}
.rig-box a:hover{background:var(--cyan)}
.rig-box a svg{width:22px;height:22px;fill:#fff}
.rig-box .txt .info{position:absolute;right:100%;top:50%;transform:translateY(-50%);background:#fff;color:var(--ink);padding:10px 14px;border-radius:6px;box-shadow:0 6px 20px rgba(0,0,0,.15);white-space:nowrap;opacity:0;visibility:hidden;transition:.25s;font-size:14px}
.rig-box .txt:hover .info{opacity:1;visibility:visible}

/* ===== Back to top ===== */
#toTop{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;background:var(--navy);color:#fff;border:none;font-size:20px;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:1000;box-shadow:0 6px 18px rgba(0,0,0,.2)}
#toTop:hover{background:var(--cyan)}

/* ===== Responsive ===== */
@media(max-width:992px){
  .prod-card{flex:0 0 262px}
  .equip-card{flex:0 0 292px}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .ind-grid{grid-template-columns:repeat(2,1fr)}
  .cases-grid{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .navbar-toggle{display:block;flex:0 0 auto}
  .main-bar{display:flex;justify-content:space-between;gap:8px}
  .logo{flex:0 1 auto;min-width:0}
  .logo img{height:auto;max-height:32px;max-width:100%}
  .nav-cta{flex:0 0 auto;padding:8px 13px;font-size:13px}
  .cta-full{display:none}
  .navbar{position:absolute;top:78px;left:0;right:0;background:#fff;display:none;box-shadow:0 14px 30px rgba(0,0,0,.12);border-top:1px solid var(--line)}
  .navbar.open{display:block}
  .navbar>ul{flex-direction:column;padding:10px 0}
  .navbar>ul>li>a{padding:13px 22px}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;display:none;padding-left:14px}
  .navbar li.open>.dropdown{display:block}
  .dropdown .dropdown{left:0}
  .hero .inner{padding:62px 20px 58px}
  .hero h1{font-size:30px}
  .hero .eyebrow{font-size:12px;margin-bottom:18px}
  .hero .lede{font-size:16px}
  .hero .usp div{font-size:15px}
  .hero-cta .btn{flex:1 1 auto;text-align:center}
  .trust-band .container{justify-content:flex-start}
  .prod-head{align-items:flex-start;gap:22px}
  .prod-head .carousel-nav{padding-bottom:0}
  .carousel-nav button{width:40px;height:40px;font-size:19px}
  .i-products .carousel-viewport{margin-top:26px}
  .prod-card{flex:0 0 228px}
  .prod-card img{height:180px}
  .equip-head{margin-top:40px}
  .equip-title{font-size:18px}
  .i-hezuo .carousel-viewport{margin-top:18px}
  .equip-card{flex:0 0 248px}
  .equip-card img{height:180px}
  .cap-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:1fr}
  .cases-grid{grid-template-columns:repeat(2,1fr)}
  .i-contact h2{font-size:24px}
  .cbtn{flex:1 1 100%;justify-content:center;padding:13px 18px}
  .foot-grid{grid-template-columns:1fr}
  .i-hezuo h2{font-size:26px}
}

/* ===== Inner page banner ===== */
.page-banner{position:relative;background:var(--dark);color:#fff;padding:64px 0;overflow:hidden}
.page-banner::before{content:"";position:absolute;right:-60px;top:-70px;width:300px;height:300px;border-radius:50%;background:rgba(0,176,240,.12)}
.page-banner::after{content:"";position:absolute;left:-50px;bottom:-110px;width:240px;height:240px;border-radius:50%;background:rgba(0,80,160,.18)}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:36px;font-weight:800;margin-bottom:12px;line-height:1.2}
.page-banner .sub{font-size:16px;color:#cfe3f5;max-width:760px;line-height:1.7}

/* ===== Breadcrumb ===== */
.crumbs{font-size:14px;color:#8aa3b8;margin-top:16px}
.crumbs a{color:var(--cyan)}
.crumbs a:hover{text-decoration:underline}
.crumbs .sep{margin:0 6px;opacity:.6}

/* ===== Page body ===== */
.page-body{padding:54px 0 20px}
.page-body .container{max-width:1080px}
.sec{padding-bottom:46px}
.sec:last-child{padding-bottom:0}
.sec h2{font-size:28px;font-weight:800;color:var(--ink);margin-bottom:16px}
.sec h3{font-size:20px;font-weight:700;color:var(--navy);margin:26px 0 10px}
.sec p{color:var(--gray);margin-bottom:14px;line-height:1.85}
.sec ul{margin:0 0 16px 22px;list-style:disc}
.sec ul li{color:var(--gray);margin-bottom:8px;line-height:1.75}
.sec-grid{display:flex;gap:38px;align-items:center;flex-wrap:wrap;margin:22px 0}
.sec-grid .txt{flex:1.3;min-width:300px}
.sec-grid .pic{flex:1;min-width:260px}
.sec-grid .pic img{width:100%;border-radius:8px;box-shadow:0 10px 28px rgba(11,31,51,.12)}

/* ===== Spec table ===== */
.spec-table{width:100%;border-collapse:collapse;margin:16px 0 8px;font-size:15px}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.spec-table th{background:var(--bg-light);color:var(--ink);font-weight:700;white-space:nowrap}
.spec-table td{color:var(--gray)}
.spec-table tr:nth-child(even) td{background:#fafcfe}

/* ===== Icon cards ===== */
.ico-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:20px}
.ico-cards .card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 16px;text-align:center;transition:.3s}
.ico-cards .card:hover{border-color:var(--navy);box-shadow:0 12px 28px rgba(11,31,51,.10);transform:translateY(-4px)}
.ico-cards .card h4{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.ico-cards .card p{font-size:13px;color:var(--gray);margin:0;line-height:1.6}

/* ===== CTA band ===== */
.cta-band{background:var(--dark);color:#fff;padding:56px 0;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;left:50%;top:-90px;transform:translateX(-50%);width:420px;height:220px;border-radius:50%;background:rgba(0,176,240,.12)}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:10px}
.cta-band p{color:#cfe3f5;margin-bottom:26px;font-size:16px}
.cta-band .btn{background:var(--cyan);color:#063049}

@media(max-width:768px){
  .page-banner{padding:44px 0}
  .page-banner h1{font-size:28px}
  .ico-cards{grid-template-columns:repeat(2,1fr)}
}

/* ===== Article layout: TOC left, content centered ===== */
.page-body .container{max-width:1400px}
.article-layout{display:grid;grid-template-columns:1fr minmax(0,800px) 1fr;gap:36px;align-items:start}
.article-main{grid-column:2;min-width:0}
.article-main h2,.article-main h3{scroll-margin-top:110px}
.article-side{grid-column:1;grid-row:1;position:sticky;top:96px;align-self:start;justify-self:end;width:100%;max-width:280px}

/* Sticky Table of Contents */
.side-toc{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px}
.toc-title{font-size:15px;font-weight:800;color:var(--ink);text-transform:uppercase;letter-spacing:.6px;margin-bottom:14px;padding-bottom:12px;border-bottom:2px solid var(--cyan)}
.toc-nav ul{list-style:none;max-height:60vh;overflow:auto}
.toc-nav li{margin:0}
.toc-nav a{display:block;padding:7px 0 7px 12px;font-size:14px;color:var(--gray);border-left:2px solid var(--line);transition:.2s;line-height:1.4}
.toc-nav a:hover{color:var(--navy);border-left-color:var(--cyan)}
.toc-nav a.active{color:var(--navy);border-left-color:var(--navy);font-weight:700}
.toc-nav a.lvl2{padding-left:26px;font-size:13px}

/* FAQ accordion */
.faq-wrap{margin-top:8px}
.faq-item{border:1px solid var(--line);border-radius:8px;margin-bottom:12px;overflow:hidden;background:#fff}
.faq-item summary{padding:16px 18px;font-weight:700;color:var(--ink);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;background:var(--bg-light);transition:.2s}
.faq-item summary:hover{color:var(--navy)}
.faq-item summary::after{content:"+";font-size:20px;color:var(--navy);font-weight:700}
.faq-item[open] summary::after{content:"\2212"}
.faq-item .a{padding:14px 18px;color:var(--gray);line-height:1.75;font-size:15px}

/* Author box */
.author-box{display:flex;gap:18px;align-items:center;background:var(--bg-light);border-radius:10px;padding:22px;margin-top:8px}
.author-box .ava{flex:0 0 60px;width:60px;height:60px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800}
.author-box .t{font-weight:700;color:var(--ink);margin-bottom:4px}
.author-box .d{font-size:14px;color:var(--gray);line-height:1.6}

/* Comment form */
.comment-form{margin-top:8px}
.comment-form .field{margin-bottom:16px}
.comment-form input,.comment-form textarea{border:1px solid var(--line);border-radius:6px;padding:12px 14px;font-size:15px;font-family:inherit;width:100%}
.comment-form input:focus,.comment-form textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(0,80,160,.08)}
.comment-form textarea{min-height:120px;resize:vertical}
.comment-form label{font-size:14px;font-weight:600;display:block;margin-bottom:6px}
.comment-form label span{color:#e23b3b}
.comment-form .note{font-size:13px;color:var(--gray);margin:10px 0 18px}
.comment-form .ck{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--gray);margin-bottom:18px}

/* Latest posts */
.latest-posts{padding:44px 0 60px;background:var(--bg-light);margin-top:44px}
.latest-posts h2{font-size:28px;font-weight:800;color:var(--ink);margin-bottom:22px}
.latest-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.latest-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px;transition:.3s;display:block}
.latest-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(11,31,51,.12);border-color:var(--navy)}
.latest-card .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--cyan);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.latest-card h4{font-size:16px;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:8px}
.latest-card .date{font-size:13px;color:var(--gray)}

@media(max-width:1200px){
  .article-layout{display:block}
  .article-side{position:static;width:100%;max-width:none;margin-bottom:28px}
}
@media(max-width:768px){
  .latest-grid{grid-template-columns:1fr}
  .article-main h2{font-size:24px}
}