:root{
  --navy:#061A2F;
  --navy-2:#092847;
  --green:#00B86B;
  --green-2:#00C2A8;
  --cyan:#00C2D1;
  --text:#0B1F33;
  --muted:#5B6B7D;
  --line:#DDE7F0;
  --soft:#F5F8FB;
  --white:#FFFFFF;
  --shadow:0 18px 45px rgba(6,26,47,.10);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.7}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1220px;margin:0 auto;padding:0 24px}
.topbar{background:var(--navy);color:#fff;font-size:14px}
.topbar .container{height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid rgba(221,231,240,.85);box-shadow:0 8px 22px rgba(6,26,47,.05)}
.header .container{height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.logo{display:flex;align-items:center;gap:12px;font-weight:900;color:var(--navy)}
.logo-mark{width:44px;height:34px;border-radius:9px;background:linear-gradient(135deg,#04c65d 0 30%,#0d4dff 30% 60%,#ff2233 60%);transform:skew(-12deg)}
.logo small{display:block;font-size:11px;font-weight:600;color:#5b6b7d;margin-top:-4px}
.nav{display:flex;align-items:center;gap:25px;font-weight:700;color:#112236}
.nav a.active,.nav a:hover{color:var(--green)}
.mobile-toggle{display:none;border:0;background:#eef7f3;color:var(--navy);padding:10px 12px;border-radius:10px;font-weight:800}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:14px 24px;font-weight:900;transition:.2s ease;white-space:nowrap;border:1px solid transparent;cursor:pointer}
.btn-green{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;box-shadow:0 12px 28px rgba(0,184,107,.24)}
.btn-green:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(0,184,107,.34)}
.btn-outline{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.06)}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.btn-soft{border-color:var(--line);background:#fff;color:var(--navy)}
.btn-soft:hover{border-color:var(--green);color:var(--green)}
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 20% 0%,rgba(0,194,209,.20),transparent 30%),linear-gradient(135deg,#041326 0%,#07294b 55%,#041326 100%);color:#fff}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:48px 48px;opacity:.35}
.hero .container{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:54px;align-items:center;padding-top:82px;padding-bottom:82px}
.kicker{display:inline-flex;align-items:center;gap:9px;border-radius:999px;padding:8px 14px;background:rgba(0,184,107,.14);color:#7cf2c1;font-weight:900;margin-bottom:22px}
.kicker:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 0 6px rgba(0,184,107,.18)}
.hero h1{font-size:58px;line-height:1.08;margin:0 0 20px;font-weight:950;letter-spacing:-1px}
.hero h1 span{color:#18e39a}
.hero .lead{font-size:20px;color:#D9EAF7;margin:0 0 16px;font-weight:700}
.hero p{color:#B9C9D8;font-size:16.5px;max-width:650px;margin:0 0 28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-points{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px;max-width:680px}
.hero-point{display:flex;gap:10px;align-items:center;color:#d7e5ef;font-weight:700;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.11);border-radius:14px;padding:11px 13px}
.hero-point i{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:rgba(0,184,107,.2);color:#64ffc1;font-style:normal}
.hero-visual{border-radius:30px;overflow:hidden;border:1px solid rgba(255,255,255,.22);box-shadow:0 30px 80px rgba(0,0,0,.35);position:relative;background:#102b46}
.hero-visual img{height:520px;width:100%;object-fit:cover;filter:saturate(1.03) contrast(1.02)}
.hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.18))}
.breadcrumb{font-size:14px;color:#668;display:flex;gap:10px;align-items:center;padding:18px 0}.breadcrumb a{color:#3d5268}.breadcrumb span{color:#8a99a8}
section{padding:86px 0}.section-soft{background:var(--soft)}
.section-dark{background:linear-gradient(135deg,#061A2F,#092847);color:#fff}
.section-head{max-width:780px;margin:0 auto 44px;text-align:center}
.section-head.left{text-align:left;margin-left:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-weight:950;font-size:14px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:10px}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green)}
h2{font-size:40px;line-height:1.2;margin:0 0 14px;font-weight:950;letter-spacing:-.6px}.section-head p{font-size:17px;color:var(--muted);margin:0}.section-dark .section-head p{color:#bcd0e0}
.grid{display:grid;gap:24px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;transition:.2s ease}.card:hover{transform:translateY(-4px)}
.icon{width:54px;height:54px;border-radius:16px;background:linear-gradient(135deg,var(--green),var(--cyan));color:#fff;display:grid;place-items:center;font-weight:950;font-size:22px;margin-bottom:18px}.card h3{font-size:22px;line-height:1.3;margin:0 0 10px}.card p{color:var(--muted);margin:0}.scenario .card{min-height:210px}.value-card{border-top:5px solid var(--green)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:46px}.split:nth-child(even) .split-img{order:2}.split-img{border-radius:24px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}.split-img img{height:380px;width:100%;object-fit:cover}.split-content h3{font-size:30px;margin:0 0 14px}.split-content p{color:var(--muted);font-size:16.5px;margin:0 0 18px}.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px;margin:18px 0 0;padding:0;list-style:none}.check-list li{position:relative;padding-left:22px;color:#24384f;font-weight:700}.check-list li:before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;background:var(--green)}
.process-wrap{position:relative}.timeline{display:grid;grid-template-columns:repeat(7,1fr);gap:14px;align-items:stretch}.step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 14px 30px rgba(6,26,47,.06);position:relative}.step b{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;margin-bottom:14px}.step h3{font-size:18px;margin:0 0 8px}.step p{font-size:14px;color:var(--muted);margin:0}.direction-card{padding:0;overflow:hidden}.direction-card img{height:210px;width:100%;object-fit:cover}.direction-card .pad{padding:24px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:26px}.compare-card{background:#fff;border-radius:24px;border:1px solid var(--line);padding:30px;box-shadow:var(--shadow)}.compare-card h3{font-size:28px;margin:0 0 8px}.tag{display:inline-flex;background:#e9fff6;color:#008f5b;border:1px solid #c4f3df;border-radius:999px;padding:6px 12px;font-weight:900;font-size:13px;margin-bottom:14px}.compare-card ul{margin:18px 0 0;padding-left:18px;color:#425268}.compare-card li{margin:7px 0}.outputs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.output{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;font-weight:850;box-shadow:0 10px 24px rgba(6,26,47,.05)}.output:before{content:"✓";display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#e9fff6;color:var(--green);margin-right:10px}.why-list{display:grid;gap:16px}.why-item{display:grid;grid-template-columns:58px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.why-num{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--green),var(--cyan));color:#fff;display:grid;place-items:center;font-weight:950}.faq{max-width:980px;margin:0 auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;margin-bottom:14px;padding:20px 24px;box-shadow:0 10px 24px rgba(6,26,47,.04)}.faq summary{font-weight:900;font-size:18px;cursor:pointer}.faq p{color:var(--muted);margin:14px 0 0}
.cta{background:#fff}.cta-box{position:relative;overflow:hidden;border-radius:30px;background:linear-gradient(135deg,rgba(0,184,107,.12),rgba(0,194,209,.08)),#fff;border:1px solid var(--line);box-shadow:var(--shadow);display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:36px;padding:52px}.cta-box h2{font-size:38px}.cta-box p{color:var(--muted);margin:0 0 24px}.cta-img{border-radius:22px;overflow:hidden}.cta-img img{height:330px;width:100%;object-fit:cover}
.form-card{background:#fff;border-radius:30px;border:1px solid var(--line);box-shadow:var(--shadow);padding:36px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.field{display:grid;gap:8px}.field.full{grid-column:1/-1}.field label{font-weight:850}.field input,.field textarea,.field select{border:1px solid var(--line);border-radius:12px;padding:14px 14px;font:inherit;outline:none;background:#fff}.field textarea{min-height:140px;resize:vertical}.checks{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.checks label{border:1px solid var(--line);border-radius:12px;padding:11px 12px;color:#2d4055;background:#fbfdff}.form-note{color:var(--muted);margin:0 0 22px}.footer{background:#061A2F;color:#ccdae6;padding:44px 0}.footer .container{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer b{color:#fff}
@media(max-width:1024px){.hero .container,.split,.cta-box{grid-template-columns:1fr}.hero h1{font-size:46px}.timeline{grid-template-columns:repeat(2,1fr)}.outputs,.grid-4{grid-template-columns:repeat(2,1fr)}.split:nth-child(even) .split-img{order:0}}
@media(max-width:760px){.nav{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:20px 24px;flex-direction:column;align-items:flex-start}.nav.open{display:flex}.mobile-toggle{display:block}.topbar .container{height:auto;padding-top:10px;padding-bottom:10px;align-items:flex-start;flex-direction:column}.hero .container{padding-top:54px;padding-bottom:56px}.hero h1{font-size:38px}.hero-visual img{height:320px}.hero-points,.grid-3,.grid-2,.outputs,.form-grid,.checks,.compare,.timeline,.grid-4{grid-template-columns:1fr}.check-list{grid-template-columns:1fr}.split-img img{height:260px}section{padding:60px 0}h2{font-size:32px}.cta-box{padding:28px}.footer .container{display:block}}


/* === 2026 update: integrate hero image into text background, keep other page sections unchanged === */
.hero{
  background:
    linear-gradient(90deg, rgba(4,27,50,.96) 0%, rgba(4,27,50,.92) 32%, rgba(7,41,75,.78) 56%, rgba(7,41,75,.46) 78%, rgba(7,41,75,.22) 100%),
    url('../images/hero-product-development.webp') center right / cover no-repeat;
  min-height:720px;
}
.hero:before{
  background-image:
    radial-gradient(circle at 15% 6%, rgba(0,184,107,.18), transparent 28%),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:auto,48px 48px,48px 48px;
  opacity:.72;
}
.hero .container{
  display:block;
  max-width:1200px;
  padding-top:82px;
  padding-bottom:82px;
}
.hero .container > div:first-child{
  max-width:690px;
}
.hero .lead{
  color:#f2fbff;
  font-size:21px;
  line-height:1.55;
}
.hero p{
  color:#e1ecf6;
  max-width:680px;
}
.hero-visual{display:none!important;}
.hero-points{max-width:640px;}
.hero-point{
  background:rgba(255,255,255,.09);
  border-color:rgba(255,255,255,.16);
  backdrop-filter:blur(8px);
}
@media(max-width:1024px){
  .hero{min-height:auto;background-position:center right;}
  .hero .container{padding-top:72px;padding-bottom:74px;}
}
@media(max-width:760px){
  .hero{background-position:center;}
  .hero .container{padding-top:54px;padding-bottom:56px;}
}