:root{
  --brand:#3b82f6; --brand-dark:#1e5fd0; --brand-light:#eaf3ff; --brand-soft:#f3f9ff;
  --accent:#14b8a6; --accent2:#8b5cf6; --green:#22a06b; --ink:#1a2740; --muted:#56687e;
  --bg:#f3f8ff; --bg-soft:#e9f2ff; --line:#d4e6ff; --radius:16px;
  --shadow:0 16px 40px rgba(43,108,200,.14); --glow:0 0 24px rgba(59,130,246,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;position:relative;overflow-x:hidden;
  background:var(--bg)}

/* ===== Tech background: aurora + grid ===== */
body::before{content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(60vw 60vw at 12% -10%, rgba(59,130,246,.20), transparent 60%),
    radial-gradient(55vw 55vw at 95% 5%, rgba(20,184,166,.16), transparent 60%),
    radial-gradient(50vw 50vw at 70% 100%, rgba(139,92,246,.14), transparent 60%),
    linear-gradient(180deg,#f3f8ff,#eef5ff);
  animation:aurora 18s ease-in-out infinite alternate;}
body::after{content:"";position:fixed;inset:0;z-index:-1;opacity:.5;
  background-image:
    linear-gradient(rgba(59,130,246,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(59,130,246,.06) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000,transparent 80%);
  mask-image:radial-gradient(circle at 50% 30%,#000,transparent 80%);}
@keyframes aurora{0%{background-position:0 0,0 0,0 0,0 0}100%{background-position:6% 4%,-5% 3%,4% -3%,0 0}}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;background:linear-gradient(135deg,#3b82f6,#14b8a6);color:#fff;padding:12px 26px;border-radius:999px;
  font-weight:600;transition:.25s;cursor:pointer;border:none;font-size:15px;box-shadow:0 8px 22px rgba(59,130,246,.35);position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent,rgba(255,255,255,.45),transparent);transform:translateX(-120%);transition:.6s}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(59,130,246,.45)}
.btn:hover::after{transform:translateX(120%)}
.btn-ghost{background:rgba(255,255,255,.6);color:var(--brand-dark);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:rgba(59,130,246,.1);color:var(--brand-dark)}
.btn-accent{background:linear-gradient(135deg,#14b8a6,#8b5cf6);color:#fff;box-shadow:0 8px 22px rgba(20,184,166,.35)}
.tag{display:inline-block;padding:4px 12px;border-radius:999px;font-size:13px;background:rgba(59,130,246,.12);color:var(--brand-dark);border:1px solid rgba(59,130,246,.25)}
.muted{color:var(--muted)}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:50;background:rgba(243,248,255,.7);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(59,130,246,.18)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--brand-dark)}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#3b82f6,#14b8a6);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;box-shadow:0 6px 16px rgba(59,130,246,.45);
  animation:pulse 3.5s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 6px 16px rgba(59,130,246,.4)}50%{box-shadow:0 6px 26px rgba(20,184,166,.6)}}
.nav-links{display:flex;gap:26px;font-weight:500}
.nav-links a{color:var(--ink);position:relative;padding:6px 0;transition:.2s}
.nav-links a:after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:linear-gradient(90deg,#3b82f6,#14b8a6);transition:.25s;border-radius:2px}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover:after{width:100%}
.nav-cta{display:flex;gap:12px;align-items:center}
.burger{display:none;font-size:26px;background:none;border:none;cursor:pointer;color:var(--brand-dark)}

/* ===== Hero ===== */
.hero{padding:74px 0 64px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.badge{display:inline-block;background:rgba(255,255,255,.7);border:1px solid rgba(59,130,246,.3);color:var(--brand-dark);
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:18px;box-shadow:0 0 18px rgba(59,130,246,.15)}
.hero h1{font-size:44px;line-height:1.25;letter-spacing:-.5px;color:var(--brand-dark);
  text-shadow:0 2px 22px rgba(59,130,246,.12)}
.hero h1 .hl{background:linear-gradient(120deg,#3b82f6,#14b8a6 55%,#8b5cf6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  background-size:200% auto;animation:shine 6s linear infinite}
@keyframes shine{to{background-position:200% center}}
.hero p.lead{font-size:18px;color:var(--muted);margin:20px 0 30px;max-width:540px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:28px;margin-top:34px}
.hero-stats .n{font-size:30px;font-weight:800;background:linear-gradient(120deg,#3b82f6,#14b8a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-stats .l{font-size:13px;color:var(--muted)}
.hero-card{background:rgba(255,255,255,.65);border:1px solid rgba(59,130,246,.25);border-radius:20px;box-shadow:var(--shadow);padding:22px;
  backdrop-filter:blur(12px);position:relative;overflow:hidden}
.hero-card::before{content:"";position:absolute;top:-40%;left:-30%;width:120%;height:120%;
  background:conic-gradient(from 0deg,transparent,rgba(59,130,246,.12),transparent 30%);animation:spin 9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-card>*{position:relative}
.hero-card .row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(59,130,246,.2)}
.hero-card .row:last-child{border-bottom:none}
.hero-card .ic{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,rgba(59,130,246,.15),rgba(20,184,166,.15));
  display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:inset 0 0 0 1px rgba(59,130,246,.2)}
.hero-card .t{font-weight:600}.hero-card .s{font-size:13px;color:var(--muted)}

/* ===== Sections ===== */
section{padding:72px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .kicker{color:var(--brand);font-weight:700;letter-spacing:2px;font-size:13px;text-transform:uppercase;
  background:linear-gradient(90deg,#3b82f6,#14b8a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-head h2{font-size:34px;margin:10px 0 12px;color:var(--brand-dark)}
.section-head p{color:var(--muted);font-size:16px}
.bg-soft{position:relative}
.bg-soft::before{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(233,242,255,.6),rgba(233,242,255,.2));z-index:0}
.bg-soft>*{position:relative;z-index:1}

/* ===== Feature grid ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:rgba(255,255,255,.72);border:1px solid rgba(59,130,246,.18);border-radius:var(--radius);padding:26px;transition:.25s;
  backdrop-filter:blur(8px);position:relative;overflow:hidden}
.feat::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,#3b82f6,#14b8a6);transform:scaleX(0);transform-origin:left;transition:.3s}
.feat:hover{transform:translateY(-6px);border-color:var(--brand);box-shadow:0 20px 46px rgba(59,130,246,.22)}
.feat:hover::before{transform:scaleX(1)}
.feat .fic{width:50px;height:50px;border-radius:12px;background:linear-gradient(135deg,rgba(59,130,246,.12),rgba(20,184,166,.12));
  display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px;box-shadow:inset 0 0 0 1px rgba(59,130,246,.2);
  transition:.3s}
.feat:hover .fic{box-shadow:0 0 20px rgba(59,130,246,.45);transform:rotate(-6deg) scale(1.05)}
.feat h3{font-size:18px;margin-bottom:8px;color:var(--brand-dark)}
.feat p{color:var(--muted);font-size:14.5px}

/* ===== Modules ===== */
.mod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.mod{background:rgba(255,255,255,.7);border:1px solid rgba(59,130,246,.16);border-radius:var(--radius);padding:22px;text-align:center;transition:.25s}
.mod:hover{background:rgba(59,130,246,.08);border-color:var(--brand);transform:translateY(-4px);box-shadow:0 0 22px rgba(59,130,246,.25)}
.mod .mic{font-size:30px;margin-bottom:8px;filter:drop-shadow(0 4px 8px rgba(59,130,246,.3))}
.mod h4{font-size:15px;color:var(--brand-dark)}
.mod p{font-size:12.5px;color:var(--muted);margin-top:4px}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{position:relative;padding:24px;border:1px solid rgba(59,130,246,.18);border-radius:var(--radius);background:rgba(255,255,255,.72);backdrop-filter:blur(8px);transition:.25s}
.step:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(59,130,246,.18)}
.step .num{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#14b8a6);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px;box-shadow:0 6px 16px rgba(59,130,246,.4)}
.step h4{margin-bottom:6px;color:var(--brand-dark)}
.step p{font-size:14px;color:var(--muted)}

/* ===== Scenarios ===== */
.scn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scn{background:rgba(255,255,255,.78);border-radius:var(--radius);border:1px solid rgba(59,130,246,.18);padding:26px;backdrop-filter:blur(8px);transition:.25s;position:relative;overflow:hidden}
.scn::after{content:"";position:absolute;right:-30px;bottom:-30px;width:90px;height:90px;border-radius:50%;background:radial-gradient(circle,rgba(139,92,246,.18),transparent 70%)}
.scn:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(59,130,246,.2)}
.scn h3{color:var(--brand-dark);margin-bottom:10px}
.scn ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.scn li{padding-left:22px;position:relative;color:var(--muted);font-size:14.5px}
.scn li:before{content:"✓";color:var(--green);position:absolute;left:0;font-weight:800;text-shadow:0 0 8px rgba(34,160,107,.4)}

/* ===== Why ===== */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.why{text-align:center;padding:24px 16px;background:rgba(255,255,255,.72);border:1px solid rgba(59,130,246,.18);border-radius:var(--radius);transition:.25s}
.why:hover{transform:translateY(-4px);box-shadow:0 0 26px rgba(59,130,246,.25);border-color:var(--brand)}
.why .wv{font-size:32px;font-weight:800;background:linear-gradient(120deg,#3b82f6,#14b8a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.why .wl{color:var(--muted);font-size:14px;margin-top:6px}

/* ===== CTA ===== */
.cta{background:linear-gradient(120deg,#1e5fd0,#3b82f6 45%,#14b8a6);color:#fff;border-radius:20px;padding:48px;text-align:center;
  box-shadow:0 22px 54px rgba(59,130,246,.4);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 20% 20%,rgba(255,255,255,.18),transparent 40%),
  radial-gradient(circle at 80% 80%,rgba(139,92,246,.25),transparent 45%)}
.cta>*{position:relative}
.cta h2{font-size:30px;margin-bottom:10px}
.cta p{opacity:.92;margin-bottom:24px}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}
.contact-info p{margin-bottom:14px;color:var(--muted)}
.contact-info .ci{display:flex;gap:12px;align-items:flex-start}
.contact-info .ci .ic{font-size:22px;filter:drop-shadow(0 2px 6px rgba(59,130,246,.4))}
.contact-form{background:rgba(255,255,255,.78);border:1px solid rgba(59,130,246,.2);border-radius:var(--radius);padding:26px;backdrop-filter:blur(10px);box-shadow:var(--shadow)}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:14px;margin-bottom:6px;color:var(--ink);font-weight:600}
.form-row input,.form-row textarea{width:100%;padding:11px 14px;border:1px solid rgba(59,130,246,.25);border-radius:10px;font-size:14px;font-family:inherit;background:rgba(255,255,255,.9);transition:.2s}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(59,130,246,.18)}
.form-row textarea{resize:vertical;min-height:110px}

/* ===== Pricing ===== */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;max-width:960px;margin:0 auto}
.price-card{background:rgba(255,255,255,.8);border:1px solid rgba(59,130,246,.2);border-radius:20px;padding:32px;box-shadow:var(--shadow);position:relative;overflow:hidden;backdrop-filter:blur(10px);transition:.25s}
.price-card:hover{transform:translateY(-6px);box-shadow:0 24px 56px rgba(59,130,246,.26)}
.price-card.featured{border-color:var(--brand);box-shadow:0 18px 50px rgba(59,130,246,.3)}
.price-card.featured::before{content:"";position:absolute;inset:0;padding:2px;border-radius:20px;background:linear-gradient(120deg,#3b82f6,#14b8a6,#8b5cf6);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:spin 8s linear infinite;opacity:.7}
.price-card .ribbon{position:absolute;top:18px;right:-34px;transform:rotate(45deg);background:linear-gradient(135deg,#3b82f6,#14b8a6);color:#fff;font-size:12px;font-weight:700;padding:5px 40px;box-shadow:0 4px 12px rgba(59,130,246,.4)}
.price-card .ptype{font-size:14px;color:var(--brand-dark);font-weight:700;letter-spacing:1px}
.price-card h3{font-size:22px;margin:6px 0 4px;color:var(--ink)}
.price-card .pdesc{color:var(--muted);font-size:14px;margin-bottom:18px}
.price-card .tiers{border-top:1px dashed rgba(59,130,246,.25);padding-top:14px}
.price-card .tier{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed rgba(59,130,246,.2);font-size:14.5px}
.price-card .tier:last-child{border-bottom:none}
.price-card .tier .range{color:var(--ink)}
.price-card .tier .amt{font-weight:700;color:var(--brand-dark);text-shadow:0 0 12px rgba(59,130,246,.2)}
.price-card .note{margin-top:16px;font-size:13px;color:var(--muted);background:rgba(59,130,246,.08);border-radius:10px;padding:10px 12px}
.price-card .btn{width:100%;text-align:center;margin-top:18px}

/* ===== Footer ===== */
.footer{background:linear-gradient(135deg,#0d2247,#163a6b 60%,#1b2f63);color:#c5d2e6;padding:54px 0 26px;margin-top:30px;position:relative;overflow:hidden}
.footer::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 15% 0%,rgba(59,130,246,.25),transparent 40%),
  radial-gradient(circle at 90% 100%,rgba(139,92,246,.22),transparent 45%)}
.footer>*{position:relative}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer h5{color:#fff;margin-bottom:14px;font-size:15px;position:relative;padding-left:12px}
.footer h5:before{content:"";position:absolute;left:0;top:4px;width:4px;height:14px;border-radius:2px;background:linear-gradient(180deg,#3b82f6,#14b8a6)}
.footer a{color:#9fb1cc;font-size:14px;display:block;margin-bottom:8px;transition:.2s}
.footer a:hover{color:#fff;transform:translateX(3px)}
.footer .about{color:#9fb1cc;font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;font-size:13px;color:#7e90ad;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ===== Page hero ===== */
.page-hero{padding:54px 0 10px;position:relative}
.page-hero::after{content:"";position:absolute;top:-20px;right:8%;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.14),transparent 70%)}
.page-hero h1{font-size:36px;color:var(--brand-dark);background:linear-gradient(120deg,#1e5fd0,#14b8a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-hero p{color:var(--muted);margin-top:10px;max-width:640px}

/* ===== responsive ===== */
@media(max-width:900px){
  .hero-grid,.contact-grid{grid-template-columns:1fr}
  .feat-grid,.mod-grid,.scn-grid,.why-grid,.steps,.price-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .burger{display:block}
  .hero h1{font-size:34px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .feat-grid,.mod-grid,.scn-grid,.why-grid,.steps,.price-grid{grid-template-columns:1fr}
  .section-head h2{font-size:26px}
}

/* ===== 系统管理服务 block ===== */
.mng-block{display:grid;grid-template-columns:1fr 1.1fr;gap:30px;align-items:center;margin-top:34px;
  background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(139,92,246,.10));
  border:1px solid rgba(59,130,246,.25);border-radius:20px;padding:32px;backdrop-filter:blur(8px);position:relative;overflow:hidden}
.mng-block::before{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,184,166,.22),transparent 70%)}
.mng-left{position:relative}
.mng-badge{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--brand-dark);
  background:rgba(255,255,255,.7);border:1px solid rgba(59,130,246,.3);padding:4px 12px;border-radius:999px;margin-bottom:10px}
.mng-left h3{font-size:24px;color:var(--brand-dark);margin-bottom:8px}
.mng-price{display:flex;align-items:baseline;gap:6px;margin:6px 0}
.mng-amt{font-size:38px;font-weight:800;background:linear-gradient(120deg,#3b82f6,#14b8a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.mng-unit{font-size:16px;color:var(--muted)}
.mng-desc{color:var(--muted);font-size:14.5px;max-width:380px}
.mng-right ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px}
.mng-right li{font-size:14px;color:var(--ink);background:rgba(255,255,255,.6);border:1px solid rgba(59,130,246,.15);
  border-radius:10px;padding:9px 12px;box-shadow:inset 0 0 0 1px rgba(59,130,246,.06)}
.mng-right .btn{width:auto}
@media(max-width:760px){.mng-block{grid-template-columns:1fr}.mng-right ul{grid-template-columns:1fr}}