:root{
  --navy:#111F33;
  --navy-2:#232D47;
  --blue:#4C6AFF;
  --blue-bright:#7098FE;
  --blue-dark:#236DEF;
  --cyan:#FE5B4C;
  --accent:#FE5B4C;
  --red:#E52B55;
  --green:#38C299;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FF;
  --bg-soft-2:#EEF3FF;
  --ink:#111F33;
  --ink-soft:#4E5A70;
  --ink-mute:#7A8599;
  --line:#E1E6ED;
  --shadow:0 18px 40px -18px rgba(17,31,51,.18);
  --shadow-sm:0 8px 22px -12px rgba(17,31,51,.13);
  --radius:16px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;
  cursor:pointer;transition:.25s;white-space:nowrap;border:1.5px solid transparent;
}
.btn-primary{background:linear-gradient(135deg,#236DEF,#4C6AFF);color:#fff;box-shadow:0 10px 24px -10px rgba(76,106,255,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -10px rgba(76,106,255,.65)}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue)}
.btn-ghost:hover{background:var(--bg-soft-2)}
.btn-outline{background:#fff;color:var(--blue);border-color:#C2D3FF}
.btn-outline:hover{background:var(--bg-soft);border-color:var(--blue)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--blue);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--blue);border-radius:2px}
.sec{padding:88px 0}
.sec-head{max-width:720px;margin:0 auto 52px;text-align:center}
.sec-head h2{font-size:34px;line-height:1.25;font-weight:800;letter-spacing:-.01em;margin:14px 0 12px}
.sec-head p{color:var(--ink-soft);font-size:17px}

/* NAV */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;color:var(--navy)}
.logo .mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#236DEF,#4C6AFF);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:800;box-shadow:0 8px 20px -10px rgba(76,106,255,.6)}
.nav-links{display:flex;gap:22px;font-size:15px;font-weight:500;color:var(--ink-soft)}
.nav-links a:hover{color:var(--blue)}
.nav-links a.active{color:var(--blue);font-weight:700}
.nav-cta{display:flex;gap:12px;align-items:center}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--navy);cursor:pointer}

/* HERO */
.hero{position:relative;overflow:hidden;background:radial-gradient(900px 520px at 84% -12%,rgba(76,106,255,.18),transparent 62%),linear-gradient(180deg,#FFFFFF 0%,#F5F8FF 52%,#EDF3FF 100%);color:var(--ink);padding:96px 0 104px;border-bottom:1px solid var(--line)}
.hero.hero-sm{padding:84px 0 72px}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(76,106,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(76,106,255,.07) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(circle at 50% 30%,#000,transparent 78%)}
.hero-glow{position:absolute;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(76,106,255,.20),transparent 66%);top:-200px;right:-90px}
.hero .wrap{position:relative;z-index:2}
.hero .eyebrow{color:var(--blue)}
.hero .eyebrow::before{background:var(--blue)}
.hero h1{font-size:52px;line-height:1.12;font-weight:800;letter-spacing:-.02em;margin:18px 0 20px;max-width:820px;color:var(--navy)}
.hero h1 .grad{background:linear-gradient(120deg,#4C6AFF,#236DEF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero.hero-sm h1{font-size:42px}
.hero p.lead{font-size:19px;color:var(--ink-soft);max-width:640px;margin-bottom:34px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:46px;margin-top:60px;flex-wrap:wrap}
.hero-stats .s .n{font-size:40px;font-weight:800;color:var(--navy);letter-spacing:-.01em}
.hero-stats .s .n .u{color:var(--blue);font-size:26px}
.hero-stats .s .t{font-size:14px;color:var(--ink-mute);margin-top:2px}
.breadcrumb{font-size:14px;color:var(--ink-mute);margin-bottom:18px}
.breadcrumb a:hover{color:var(--blue)}

/* TRUST BAR */
.trust{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.trust .wrap{display:flex;justify-content:center;gap:54px;padding:26px 24px;flex-wrap:wrap;color:var(--ink-soft);font-size:14px;align-items:center}
.trust .item{display:flex;align-items:center;gap:9px;font-weight:500}
.trust .item svg{color:var(--blue)}

/* CARDS */
.grid{display:grid;gap:24px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.25s;box-shadow:var(--shadow-sm)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#C2D3FF}
.card .ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#EEF3FF,#E4ECFF);display:grid;place-items:center;color:var(--blue);margin-bottom:18px}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:15px}
.card .num{font-size:30px;font-weight:800;color:var(--blue);line-height:1}
.card.soft{background:var(--bg-soft)}
.card ul{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:14px}
.card ul li{display:flex;gap:10px;font-size:14.5px;color:var(--ink)}
.card ul li svg{color:var(--blue);flex-shrink:0;margin-top:3px}

/* FEATURE (6) */
.feat{background:var(--bg-soft)}
.feat .card .ic{background:linear-gradient(135deg,#EDF3FF,#DCE7FF)}
.badge-new{font-size:11px;font-weight:700;color:#fff;background:linear-gradient(135deg,#FE5B4C,#FF7E6E);padding:2px 8px;border-radius:6px;margin-left:8px;vertical-align:middle}

/* PRICING */
.price-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1.5px solid var(--line);border-radius:22px;padding:32px;transition:.25s;box-shadow:var(--shadow-sm)}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-card.hot{border-color:var(--blue);box-shadow:0 24px 50px -20px rgba(76,106,255,.45)}
.price-card.hot::before{content:"最受欢迎";position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#236DEF,#4C6AFF);color:#fff;font-size:12.5px;font-weight:700;padding:5px 16px;border-radius:999px}
.price-card .pname{font-size:21px;font-weight:800;color:var(--navy)}
.price-card .ptag{color:var(--ink-soft);font-size:14px;min-height:42px;margin:8px 0 18px}
.price-card .pprice{display:flex;align-items:baseline;gap:6px;margin-bottom:4px}
.price-card .pprice .num{font-size:38px;font-weight:800;color:var(--blue-dark)}
.price-card .pprice .unit{font-size:14px;color:var(--ink-soft)}
.price-card .psale{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:20px}
.price-card ul{list-style:none;display:flex;flex-direction:column;gap:11px;margin-bottom:24px;flex:1}
.price-card ul li{display:flex;gap:10px;font-size:14.5px;color:var(--ink)}
.price-card ul li svg{color:var(--blue);flex-shrink:0;margin-top:3px}
.price-card .btn{justify-content:center}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:var(--shadow-sm);position:relative}
.step .sn{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#236DEF,#4C6AFF);color:#fff;font-weight:800;font-size:18px;display:grid;place-items:center;margin-bottom:16px;box-shadow:0 8px 18px -8px rgba(76,106,255,.6)}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-soft)}

/* INFO / CONTENT BLOCKS */
.prose{max-width:820px;margin:0 auto}
.prose h2{font-size:26px;font-weight:800;color:var(--navy);margin:42px 0 16px}
.prose h3{font-size:20px;font-weight:700;color:var(--navy);margin:30px 0 12px}
.prose p{color:var(--ink-soft);font-size:16px;margin-bottom:14px}
.prose ul{list-style:none;display:flex;flex-direction:column;gap:12px;margin:0 0 16px}
.prose ul li{display:flex;gap:12px;font-size:16px;color:var(--ink-soft)}
.prose ul li svg{color:var(--blue);flex-shrink:0;margin-top:3px}
.callout{background:var(--bg-soft-2);border:1px solid #C2D3FF;border-radius:14px;padding:22px 24px;margin:24px 0;font-size:15px;color:var(--ink-soft)}
.callout b{color:var(--navy)}
.tag-row{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}
.tag-row span{font-size:13px;background:var(--bg-soft);border:1px solid var(--line);padding:6px 13px;border-radius:8px;color:var(--ink-soft)}

/* CASES */
.cases{background:#fff;color:var(--ink);border-top:1px solid var(--line)}
.cases .sec-head h2{color:var(--navy)}
.cases .sec-head p{color:var(--ink-soft)}
.cases .grid-3 .card{background:var(--bg-soft);border-color:var(--line)}
.cases .card p{color:var(--ink-soft)}
.cases .card .quote{font-size:42px;color:var(--blue);font-weight:800;line-height:1;margin-bottom:8px}
.cases .card .role{font-size:13px;color:var(--ink-mute);margin-top:16px;font-weight:600}

/* CTA BANNER */
.cta-band{background:linear-gradient(120deg,#236DEF 0%,#4C6AFF 55%,#7098FE 100%);color:#fff;text-align:center;padding:74px 0}
.cta-band h2{font-size:36px;font-weight:800;margin-bottom:14px}
.cta-band p{font-size:18px;opacity:.95;margin-bottom:30px}
.cta-band .btn-primary{background:#fff;color:var(--blue-dark)}
.cta-band .btn-primary:hover{background:#F0F7FF}

/* FOOTER */
footer{background:var(--navy);color:#A9B2C2;padding:54px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
footer .logo{color:#fff;margin-bottom:14px}
footer .logo .mark{background:linear-gradient(135deg,#236DEF,#4C6AFF)}
footer p.desc{font-size:14px;max-width:300px;line-height:1.7}
footer h4{color:#fff;font-size:15px;margin-bottom:16px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
footer ul a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;font-size:13px;color:#7A8599;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.foot-bottom .disc{max-width:680px;line-height:1.6}

@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:40px}
}
@media (max-width:680px){
  .nav-links,.nav-cta .btn-outline{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 24px;gap:16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
  .sec{padding:62px 0}
  .sec-head h2{font-size:27px}
  .grid-4,.grid-3,.grid-2,.steps{grid-template-columns:1fr}
  .hero-stats{gap:28px}
  .hero h1{font-size:32px}
  .hero.hero-sm h1{font-size:28px}
  .foot-grid{grid-template-columns:1fr}
}

.dealer-line{margin-top:22px;font-size:15px;opacity:.95}
.dealer-line a{font-weight:700;text-decoration:underline}
.dealer-bar{border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);padding:20px 0;margin-bottom:26px}
.dealer-bar-in{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.dealer-bar .dl{background:rgba(255,255,255,.12);color:#fff;font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px}
.dealer-bar .dn{color:#fff;font-size:15px;font-weight:600}
.dealer-bar .dp{color:#A9B2C2;font-size:14px}
.dealer-bar .dp a{color:#fff;font-weight:700}
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:24px}
.modal.show{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(17,31,51,.55)}
.modal-box{position:relative;background:#fff;border-radius:18px;padding:38px 34px;max-width:400px;width:100%;text-align:center;box-shadow:0 30px 60px -20px rgba(17,31,51,.5)}
.modal-x{position:absolute;top:10px;right:14px;background:none;border:none;font-size:26px;color:#7A8599;cursor:pointer;line-height:1}
.modal-box h3{font-size:20px;font-weight:700;color:#111F33;margin-bottom:8px}
.modal-co{font-size:14px;color:#4E5A70;margin-bottom:18px}
.modal-tel{display:block;font-size:30px;font-weight:800;color:#236DEF;padding:14px 0;border:1px dashed #C2D3FF;border-radius:12px;background:#F5F8FF;margin-bottom:14px}
.modal-tel:hover{background:#EEF3FF}
.modal-acts{margin-bottom:14px}
.btn-copy{padding:9px 22px;font-size:14px;cursor:pointer}
.modal-tip{font-size:13px;color:#7A8599;line-height:1.7}

/* INDUSTRY TABS (index.html) */
.ind-tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px}
.ind-tabs button{background:#fff;border:1px solid var(--line);color:var(--ink-soft);font-size:15px;font-weight:600;padding:10px 20px;border-radius:999px;cursor:pointer;transition:.2s;font-family:inherit}
.ind-tabs button:hover{border-color:var(--blue);color:var(--blue)}
.ind-tabs button.active{background:linear-gradient(135deg,#236DEF,#4C6AFF);color:#fff;border-color:transparent;box-shadow:0 10px 22px -10px rgba(76,106,255,.5)}
.ind-panel{display:none;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:44px}
.ind-panel.active{display:grid}
.ind-panel h3{font-size:24px;font-weight:800;color:var(--navy);margin-bottom:14px}
.ind-panel .impact{display:inline-block;font-size:13px;font-weight:700;color:var(--blue);background:#fff;border:1px solid #C2D3FF;border-radius:999px;padding:5px 14px;margin-bottom:16px}
.ind-panel p{color:var(--ink-soft);font-size:16px;margin-bottom:18px}
.ind-panel .tags{display:flex;flex-wrap:wrap;gap:10px}
.ind-panel .tags span{font-size:13px;background:#fff;border:1px solid var(--line);padding:6px 13px;border-radius:8px;color:var(--ink-soft)}
.ind-visual{background:linear-gradient(135deg,#236DEF,#4C6AFF);border-radius:18px;padding:52px 30px;text-align:center;color:#fff;box-shadow:0 20px 44px -18px rgba(76,106,255,.55)}
.ind-visual .big{font-size:48px;font-weight:800;line-height:1.1}
.ind-visual .sub{font-size:15px;opacity:.92;margin-top:10px}

/* FAQ (index.html) */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
.faq-item:hover{border-color:#C2D3FF;box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:24px 28px;background:none;border:none;cursor:pointer;font-family:inherit;font-size:20px;font-weight:700;color:var(--navy);text-align:left;line-height:1.5}
.faq-q .plus{font-size:26px;color:var(--blue);flex-shrink:0;transition:transform .25s;line-height:1}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{overflow:hidden;max-height:0;transition:max-height .3s ease}
.faq-a .inner{padding:0 28px 26px;color:var(--ink-soft);font-size:15.5px;line-height:1.75}

@media (max-width:980px){
  .ind-panel{grid-template-columns:1fr;gap:26px;padding:34px}
  .ind-visual{padding:38px 24px}
  .ind-visual .big{font-size:38px}
}
@media (max-width:680px){
  .faq-q{font-size:17px;padding:20px}
  .faq-a .inner{padding:0 20px 22px}
  .ind-tabs button{padding:8px 14px;font-size:14px}
}

/* CERTIFICATE SHOWCASE (credentials.html) */
.cert-showcase-sec{background:#fff;border-top:1px solid var(--line)}
.cert-showcase{display:grid;grid-template-columns:minmax(280px,420px) 1fr;gap:48px;align-items:center;max-width:980px;margin:0 auto}
.cert-frame{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow);transition:.25s}
.cert-frame:hover{transform:translateY(-4px);box-shadow:0 26px 50px -20px rgba(17,31,51,.28)}
.cert-frame img{width:100%;border-radius:8px;display:block}
.cert-meta h3{font-size:20px;font-weight:800;color:var(--navy);margin-bottom:18px}
.cert-list{list-style:none;display:flex;flex-direction:column;gap:0}
.cert-list li{display:flex;justify-content:space-between;gap:18px;padding:13px 2px;border-bottom:1px dashed var(--line);font-size:15px}
.cert-list li:last-child{border-bottom:none}
.cert-list .k{color:var(--ink-mute);font-weight:500;flex-shrink:0}
.cert-list .v{color:var(--ink);font-weight:600;text-align:right}
.cert-verify{display:flex;align-items:center;gap:8px;margin-top:20px;font-size:14px;color:var(--ink-soft)}
.cert-verify svg{color:var(--blue);flex-shrink:0}
.cert-verify a{color:var(--blue);font-weight:700}
.cert-note{margin-top:14px;font-size:13px;color:var(--accent);background:rgba(254,91,76,.08);border:1px solid rgba(254,91,76,.25);border-radius:10px;padding:11px 14px;line-height:1.6}

/* CRED STRIP (index.html) */
.cred-strip{background:var(--bg-soft)}
.cred-inner{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.cred-txt .eyebrow{margin-bottom:12px}
.cred-txt h2{font-size:30px;font-weight:800;color:var(--navy);margin-bottom:14px;letter-spacing:-.01em}
.cred-txt p{color:var(--ink-soft);font-size:16px;max-width:520px;margin-bottom:24px}
.cred-thumb{position:relative;display:block;width:230px;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s;background:#fff;padding:12px}
.cred-thumb:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.cred-thumb img{width:100%;border-radius:8px;display:block}
.cred-thumb-cap{position:absolute;left:12px;right:12px;bottom:12px;text-align:center;font-size:12px;font-weight:600;color:#fff;background:rgba(17,31,51,.72);border-radius:8px;padding:6px 0}

@media (max-width:980px){
  .cert-showcase{grid-template-columns:1fr;gap:32px;max-width:520px}
  .cred-inner{grid-template-columns:1fr;gap:30px;text-align:center}
  .cred-txt p{margin-left:auto;margin-right:auto}
  .cred-thumb{margin:0 auto}
}
@media (max-width:680px){
  .cert-list li{flex-direction:column;gap:2px;align-items:flex-start}
  .cert-list .v{text-align:left}
  .cred-txt h2{font-size:24px}
  .cred-thumb{width:200px}
}