/* ============================================================
   海外开发类新项目数据库开发与维护 — 产品详情页
   ============================================================ */

:root{
  --navy-900:#0A1F33;
  --navy-800:#0E2A45;
  --navy-700:#17436B;
  --blue-600:#26659B;
  --blue-400:#3D85B5;
  --gold:#B8873A;
  --gold-soft:#F3E9D6;

  --ink:#16202B;
  --ink-2:#3C4A57;
  --gray-600:#5A6875;
  --gray-400:#8A96A3;
  --line:#E1E8EF;
  --line-2:#EEF2F6;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FA;

  --radius:10px;
  --radius-lg:14px;
  --maxw:1180px;
  --shadow-sm:0 1px 2px rgba(16,32,48,.05);
  --shadow:0 6px 24px rgba(16,32,48,.07);
}

*{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:15px;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------------- Nav ---------------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 32px;
  height:64px;display:flex;align-items:center;gap:36px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;color:var(--navy-800);white-space:nowrap}
.brand-mark{width:22px;height:22px;flex:none}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:14px;color:var(--ink-2)}
.nav-links a{position:relative;padding:4px 0;transition:color .2s}
.nav-links a:hover{color:var(--navy-700)}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--gold);transition:right .25s ease;
}
.nav-links a:hover::after{right:0}
.nav-cta{
  font-size:13.5px;color:#fff;background:var(--navy-800);
  padding:8px 18px;border-radius:6px;white-space:nowrap;transition:background .2s;
}
.nav-cta:hover{background:var(--navy-700)}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(61,133,181,.28),transparent 62%),
    linear-gradient(160deg,#0E2A45 0%,#0A1F33 100%);
  color:#fff;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(1000px 520px at 70% 0%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(1000px 520px at 70% 0%,#000 25%,transparent 78%);
  pointer-events:none;
}
.hero-inner{
  position:relative;max-width:var(--maxw);margin:0 auto;padding:86px 32px 78px;
  display:grid;grid-template-columns:1fr 1.02fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:2.4px;color:#9FC0DC;text-transform:uppercase;
  border:1px solid rgba(159,192,220,.34);border-radius:100px;padding:5px 14px;margin-bottom:26px;
}
.eyebrow i{width:5px;height:5px;border-radius:50%;background:var(--gold);display:block}
.hero h1{
  font-size:40px;line-height:1.3;font-weight:700;letter-spacing:.5px;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:#EFC77A}
.hero-lead{font-size:16px;line-height:1.9;color:#C3D6E7;max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.btn{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:500;
  padding:12px 26px;border-radius:6px;transition:.2s;border:1px solid transparent;
}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:#A5762F}
.btn-ghost{color:#D6E6F4;border-color:rgba(214,230,244,.36)}
.btn-ghost:hover{background:rgba(255,255,255,.07)}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12);border-radius:8px;overflow:hidden}
.hero-stats div{background:rgba(10,31,51,.55);padding:16px 14px}
.hero-stats b{display:block;font-size:24px;font-weight:600;color:#fff;line-height:1.35;letter-spacing:.5px}
.hero-stats span{font-size:12px;color:#8FAECB;line-height:1.6}

.hero-figure{border-radius:var(--radius-lg);box-shadow:0 24px 60px rgba(0,0,0,.34);overflow:hidden}
.hero-figure img{width:100%;height:auto}

/* ---------------- Section base ---------------- */
.section{padding:88px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:52px}
.section-tag{
  display:inline-block;font-size:12px;letter-spacing:2.2px;color:var(--gold);
  font-weight:600;margin-bottom:14px;
}
.section-head h2{font-size:30px;line-height:1.45;font-weight:700;color:var(--navy-800);letter-spacing:.5px}
.section-head p{margin-top:16px;font-size:15px;color:var(--gray-600);line-height:1.9}

/* ---------------- Overview ---------------- */
.overview{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}
.overview-body p{color:var(--ink-2);margin-bottom:18px}
.overview-body p strong{color:var(--navy-800);font-weight:600}
.def-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.def-row{display:grid;grid-template-columns:120px 1fr;gap:0;border-bottom:1px solid var(--line-2)}
.def-row:last-child{border-bottom:0}
.def-row dt{background:var(--bg-soft);padding:16px 18px;font-size:13.5px;font-weight:600;color:var(--navy-800)}
.def-row dd{padding:16px 18px;font-size:14px;color:var(--ink-2);line-height:1.8}

.goal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.goal{
  border:1px solid var(--line);border-radius:var(--radius);padding:18px 16px;background:#fff;
  transition:.2s;
}
.goal:hover{border-color:#C6D6E4;box-shadow:var(--shadow-sm)}
.goal b{display:block;font-size:15px;color:var(--navy-800);margin-bottom:8px;font-weight:600}
.goal span{font-size:13px;color:var(--gray-600);line-height:1.75}

/* ---------------- Problems ---------------- */
.problems{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.problem{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 28px;position:relative;overflow:hidden;
}
.problem::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--blue-600)}
.problem h3{font-size:17px;font-weight:600;color:var(--navy-800);margin-bottom:16px}
.problem .pain{
  font-size:13.5px;color:var(--gray-600);line-height:1.85;padding-bottom:16px;
  border-bottom:1px dashed var(--line);margin-bottom:16px;
}
.problem .pain-label{
  display:inline-block;font-size:11.5px;letter-spacing:1.4px;color:#A5762F;
  background:var(--gold-soft);border-radius:4px;padding:2px 8px;margin-bottom:10px;
}
.problem .fix-label{
  display:inline-block;font-size:11.5px;letter-spacing:1.4px;color:#fff;
  background:var(--navy-700);border-radius:4px;padding:2px 8px;margin-bottom:10px;
}
.problem .fix{font-size:14px;color:var(--ink-2);line-height:1.85}

/* ---------------- Features ---------------- */
.feature{
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--line-2);
}
.feature:last-of-type{border-bottom:0;padding-bottom:0}
.feature.reverse .feature-text{order:2}
.feature-text h3{
  font-size:22px;font-weight:600;color:var(--navy-800);margin-bottom:14px;line-height:1.5;
  display:flex;align-items:baseline;gap:12px;
}
.feature-text h3 em{
  font-style:normal;font-size:13px;font-weight:600;color:var(--gold);
  border:1px solid #E4D3B0;background:#FBF6ED;border-radius:4px;padding:2px 9px;flex:none;
}
.feature-text > p{font-size:14.5px;color:var(--gray-600);line-height:1.95;margin-bottom:20px}
.flist{list-style:none;border-top:1px solid var(--line-2)}
.flist li{
  display:grid;grid-template-columns:18px 1fr;gap:12px;
  padding:13px 0;border-bottom:1px solid var(--line-2);font-size:14px;color:var(--ink-2);line-height:1.8;
}
.flist li svg{margin-top:6px}
.flist li b{color:var(--navy-800);font-weight:600}
.feature-figure{
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  box-shadow:var(--shadow-sm);
}
.feature-figure img{width:100%;height:auto}
.feature-figure figcaption{
  padding:12px 18px;font-size:12.5px;color:var(--gray-400);background:var(--bg-soft);
  border-top:1px solid var(--line);
}

/* ---------------- Tech highlights ---------------- */
.tech{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tech-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 28px;
}
.tech-card .num{
  font-size:13px;font-weight:600;color:var(--gold);letter-spacing:2px;margin-bottom:14px;display:block;
}
.tech-card h3{font-size:18px;font-weight:600;color:var(--navy-800);margin-bottom:14px;line-height:1.55}
.tech-card p{font-size:14px;color:var(--gray-600);line-height:1.95;margin-bottom:18px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{
  font-size:12.5px;color:var(--navy-700);background:#EDF3F9;border:1px solid #D8E5F0;
  border-radius:4px;padding:3px 10px;
}

/* ---------------- Progress ---------------- */
.progress-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-bottom:44px;
}
.pstat{border-left:3px solid var(--navy-700);padding:6px 0 6px 18px}
.pstat b{display:block;font-size:30px;font-weight:600;color:var(--navy-800);line-height:1.4;letter-spacing:.5px}
.pstat span{font-size:13.5px;color:var(--gray-600)}
.pstat small{display:block;font-size:12.5px;color:var(--gray-400);margin-top:4px}

.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--navy-800);padding-top:26px}
.tl{position:relative;padding-right:32px}
.tl::before{
  content:"";position:absolute;top:-31px;left:0;width:11px;height:11px;border-radius:50%;
  background:var(--navy-800);border:2px solid #fff;box-shadow:0 0 0 2px var(--navy-800);
}
.tl h4{font-size:15px;font-weight:600;color:var(--navy-800);margin-bottom:12px}
.tl ul{list-style:none}
.tl li{
  font-size:13.5px;color:var(--ink-2);line-height:1.8;padding-left:16px;position:relative;margin-bottom:8px;
}
.tl li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--blue-400)}
.tl .tl-meta{font-size:12.5px;color:var(--gray-400);margin-bottom:10px}

/* ---------------- Delivery ---------------- */
.delivery{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.deliver{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;
}
.deliver .k{
  width:34px;height:34px;border-radius:7px;background:var(--navy-800);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;margin-bottom:16px;
}
.deliver h4{font-size:15.5px;font-weight:600;color:var(--navy-800);margin-bottom:10px}
.deliver p{font-size:13.5px;color:var(--gray-600);line-height:1.85}

/* ---------------- CTA ---------------- */
.cta{
  background:linear-gradient(140deg,#0E2A45,#123A5C);color:#fff;padding:74px 0;
}
.cta-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.cta h2{font-size:27px;font-weight:700;line-height:1.5;margin-bottom:14px}
.cta p{font-size:15px;color:#B9D0E4;line-height:1.9}
.cta-contact{display:grid;gap:12px}
.cta-item{
  display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.13);border-radius:8px;padding:14px 18px;
}
.cta-item span{font-size:12.5px;color:#8FAECB;display:block;line-height:1.5}
.cta-item b{font-size:16px;font-weight:500;color:#fff;letter-spacing:.5px}

/* ---------------- Footer ---------------- */
.footer{background:var(--navy-900);color:#8FA3B6;padding:44px 0 34px;font-size:13px}
.footer-inner{display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between;align-items:flex-start}
.footer-col h5{font-size:13px;color:#D6E6F4;font-weight:600;margin-bottom:12px;letter-spacing:.6px}
.footer-col p,.footer-col a{font-size:13px;color:#8FA3B6;line-height:2}
.footer-col a:hover{color:#C3D6E7}
.footer-bottom{
  margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;font-size:12.5px;color:#7B8FA3;
}

/* ---------------- Responsive ---------------- */
@media (max-width:1000px){
  .hero-inner{grid-template-columns:1fr;padding:64px 24px 56px;gap:40px}
  .hero h1{font-size:31px}
  .overview{grid-template-columns:1fr;gap:36px}
  .feature{grid-template-columns:1fr;gap:30px;padding:44px 0}
  .feature.reverse .feature-text{order:0}
  .problems,.tech{grid-template-columns:1fr}
  .goal-grid,.progress-stats,.delivery{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:1fr;gap:26px;border-top:0;padding-top:0}
  .tl{padding-left:22px;border-left:2px solid var(--line)}
  .tl::before{top:4px;left:-7px}
  .cta-inner{grid-template-columns:1fr}
  .nav-links{display:none}
  .wrap,.nav-inner,.hero-inner{padding-left:24px;padding-right:24px}
  .section{padding:64px 0}
}
@media (max-width:560px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .goal-grid,.progress-stats,.delivery{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
  .def-row{grid-template-columns:1fr}
}