/* =========================================
   Sinofar Technology — 华泛科技
   Corporate website stylesheet
   ========================================= */

:root{
  --navy:#0B1B3A;
  --navy-2:#122A55;
  --blue:#3B82F6;
  --blue-d:#1D4ED8;
  --cyan:#22D3EE;
  --ink:#0F172A;
  --body:#475569;
  --muted:#64748B;
  --line:#E2E8F0;
  --bg:#FFFFFF;
  --bg-tint:#F6F9FF;
  --radius:16px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.05), 0 4px 14px rgba(15,23,42,.05);
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(15,23,42,.14);
  --max:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;scroll-padding-top:88px;}

body{
  margin:0;
  font-family:"Inter","Segoe UI",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--body);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5{color:var(--ink);margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
img,svg{display:block;max-width:100%;}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .25s var(--ease);
  white-space:nowrap;line-height:1;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--blue) 0%,var(--cyan) 100%);
  color:#fff;box-shadow:0 8px 22px rgba(59,130,246,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(59,130,246,.42);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue-d);background:#F0F7FF;}
.btn-light{background:#fff;color:var(--navy);box-shadow:0 10px 26px rgba(0,0,0,.22);}
.btn-light:hover{transform:translateY(-2px);}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:all .3s var(--ease);
}
.site-header.scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 4px 20px rgba(15,23,42,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{display:flex;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;color:var(--ink);font-weight:800;letter-spacing:-.02em;display:flex;align-items:baseline;gap:7px;}
.brand-text strong em{font-style:normal;font-size:14px;font-weight:600;color:var(--muted);}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.04em;}

.nav{display:flex;align-items:center;gap:30px;}
.nav a{font-size:15px;font-weight:500;color:#334155;position:relative;padding:6px 0;transition:color .2s;}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));transition:width .28s var(--ease);
}
.nav a:hover{color:var(--blue-d);}
.nav a:hover::after{width:100%;}

.header-actions{display:flex;align-items:center;gap:12px;}

.lang-toggle{
  height:38px;min-width:46px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:#334155;
  font-size:13px;font-weight:700;letter-spacing:.06em;cursor:pointer;
  transition:all .22s var(--ease);
}
.lang-toggle:hover{border-color:var(--blue);color:var(--blue-d);background:#F0F7FF;}

.menu-btn{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:38px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;padding:0 10px;}
.menu-btn span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.25s;}
.menu-btn.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-btn.open span:nth-child(2){opacity:0;}
.menu-btn.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:158px 0 60px;overflow:hidden;background:linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 68%);}
.hero-bg{position:absolute;inset:0;pointer-events:none;}
.orb{position:absolute;border-radius:50%;filter:blur(70px);}
.orb-1{width:520px;height:520px;top:-180px;right:-120px;background:radial-gradient(circle,rgba(59,130,246,.28),transparent 68%);}
.orb-2{width:440px;height:440px;top:80px;left:-160px;background:radial-gradient(circle,rgba(34,211,238,.22),transparent 68%);}
.grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(15,23,42,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(15,23,42,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 20%,transparent 78%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}

.pill{
  display:inline-flex;align-items:center;gap:9px;padding:8px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  font-size:13px;font-weight:600;color:#334155;margin-bottom:24px;
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 4px rgba(34,197,94,.16);}

.hero h1{font-size:clamp(36px,4.6vw,58px);font-weight:800;letter-spacing:-.03em;margin-bottom:22px;}
.grad{
  background:linear-gradient(120deg,var(--blue-d) 0%,var(--blue) 45%,var(--cyan) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{font-size:17px;color:var(--body);max-width:560px;margin-bottom:32px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px;}
.hero-points{display:flex;gap:26px;flex-wrap:wrap;}
.hero-points li{position:relative;padding-left:22px;font-size:14px;font-weight:600;color:#334155;}
.hero-points li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:14px;height:14px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  box-shadow:0 0 0 4px rgba(59,130,246,.12);
}

/* hero visual */
.hero-visual{display:flex;justify-content:center;}
.visual-card{
  width:100%;max-width:470px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg,#0E2148 0%,#0B1B3A 100%);
  border:1px solid rgba(148,163,184,.22);
  box-shadow:var(--shadow-lg);overflow:hidden;
  animation:float 7s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-12px);}}
.vc-head{display:flex;align-items:center;gap:7px;padding:14px 18px;border-bottom:1px solid rgba(148,163,184,.16);}
.vc-dot{width:9px;height:9px;border-radius:50%;background:rgba(148,163,184,.35);}
.vc-dot:first-child{background:#F87171;}
.vc-dot:nth-child(2){background:#FBBF24;}
.vc-dot:nth-child(3){background:#34D399;}
.vc-title{margin-left:8px;font-size:12px;color:#94A3B8;letter-spacing:.06em;}
.vc-svg{width:100%;height:auto;padding:10px 8px 0;}
.vc-foot{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(148,163,184,.16);}
.vc-foot > div{padding:16px 12px;text-align:center;border-right:1px solid rgba(148,163,184,.12);}
.vc-foot > div:last-child{border-right:none;}
.vc-foot b{display:block;font-size:20px;color:#fff;font-weight:800;letter-spacing:-.02em;}
.vc-foot span{font-size:11.5px;color:#94A3B8;}

/* marquee */
.marquee{
  margin-top:56px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
}
.marquee > span{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);flex-shrink:0;}
.marquee-track{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.marquee-track b{font-size:14.5px;font-weight:600;color:#334155;}
.marquee-track i{color:var(--blue);font-style:normal;font-weight:700;}

/* ---------- Sections ---------- */
.section{padding:100px 0;}
.section-tint{background:var(--bg-tint);}
.section-head{max-width:760px;margin-bottom:56px;}
.section-head h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;letter-spacing:-.025em;margin:14px 0 0;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:var(--blue-d);padding:6px 14px;border-radius:999px;background:#EAF2FF;
}
.eyebrow-light{color:#93C5FD;background:rgba(147,197,253,.14);}
.section-sub{margin-top:18px;font-size:16.5px;color:var(--muted);}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:start;}
.about-text p{margin-bottom:20px;font-size:16.5px;line-height:1.9;}
.about-text p:last-child{margin-bottom:0;}
.about-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow);
}
.about-card h3{font-size:17px;margin-bottom:22px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.facts > div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);}
.facts > div:last-child{border-bottom:none;padding-bottom:0;}
.facts dt{font-size:13.5px;color:var(--muted);flex-shrink:0;}
.facts dd{margin:0;font-size:14px;font-weight:600;color:var(--ink);text-align:right;}
.facts dd a{color:var(--blue-d);}
.facts dd a:hover{text-decoration:underline;}

/* ---------- Cards 4 ---------- */
.cards-4{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px;transition:all .32s var(--ease);position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#CBD5E1;}
.card:hover::before{transform:scaleX(1);}
.card-ico{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#EAF2FF,#E7FBFF);color:var(--blue-d);margin-bottom:22px;
  transition:all .32s var(--ease);
}
.card-ico svg{width:26px;height:26px;}
.card:hover .card-ico{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;transform:rotate(-6deg) scale(1.05);}
.card h3{font-size:19px;margin-bottom:12px;}
.card p{font-size:15px;line-height:1.85;}
.card-list{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);}
.card-list li{position:relative;padding-left:20px;font-size:14px;color:#334155;margin-bottom:9px;}
.card-list li:last-child{margin-bottom:0;}
.card-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
}

/* ---------- Products ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.p-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;
  transition:all .32s var(--ease);
}
.p-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#CBD5E1;}
.p-top{margin-bottom:20px;}
.tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--blue-d);background:#EAF2FF;padding:6px 13px;border-radius:999px;
}
.p-card h3{font-size:19px;margin-bottom:14px;}
.p-card p{font-size:15px;line-height:1.85;}

/* ---------- Advantage (dark) ---------- */
.section-dark{
  background:linear-gradient(150deg,#0B1B3A 0%,#102A55 60%,#0B1B3A 100%);
  position:relative;overflow:hidden;color:#B7C6DE;
}
.section-dark::after{
  content:"";position:absolute;width:560px;height:560px;right:-180px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.18),transparent 68%);filter:blur(50px);
}
.adv-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;position:relative;z-index:1;}
.adv-left h2{color:#fff;font-size:clamp(27px,3vw,38px);font-weight:800;letter-spacing:-.025em;margin:16px 0 20px;}
.adv-left p{font-size:16.5px;line-height:1.9;margin-bottom:32px;color:#A9BCD6;}
.adv-right{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.adv-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(148,163,184,.18);
  border-radius:var(--radius);padding:26px;transition:all .3s var(--ease);
}
.adv-item:hover{background:rgba(255,255,255,.09);border-color:rgba(34,211,238,.5);transform:translateY(-4px);}
.adv-item h4{color:#fff;font-size:16.5px;margin-bottom:10px;}
.adv-item p{font-size:14px;line-height:1.8;color:#A9BCD6;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:46px;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 24px;
  text-align:center;transition:all .3s var(--ease);display:block;
}
a.contact-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--blue);}
.cc-ico{
  width:54px;height:54px;margin:0 auto 20px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#EAF2FF,#E7FBFF);color:var(--blue-d);
}
.cc-ico svg{width:26px;height:26px;}
.contact-card h3{font-size:15px;color:var(--muted);font-weight:600;margin-bottom:8px;}
.cc-main{font-size:20px;font-weight:800;color:var(--ink);letter-spacing:-.01em;margin-bottom:12px;word-break:break-word;}
.cc-addr{font-size:15px;line-height:1.6;font-weight:700;}
.cc-link{font-size:13.5px;font-weight:600;color:var(--blue-d);}

.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  padding:44px 46px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#0B1B3A 0%,#153163 55%,#0E3A55 100%);
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.28),transparent 70%);filter:blur(30px);
}
.cta-band h3{color:#fff;font-size:24px;margin-bottom:10px;position:relative;z-index:1;}
.cta-band p{color:#A9BCD6;font-size:15.5px;position:relative;z-index:1;}
.cta-band .btn{position:relative;z-index:1;}

/* ---------- Footer ---------- */
.site-footer{background:#08152C;color:#94A3B8;padding:70px 0 30px;font-size:14.5px;}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(148,163,184,.16);}
.footer-brand .brand{margin-bottom:20px;}
.footer-brand .brand-text strong{color:#fff;font-size:16px;}
.footer-brand .brand-text strong em{color:#94A3B8;}
.footer-brand p{line-height:1.85;max-width:400px;}
.footer-col{display:flex;flex-direction:column;gap:12px;}
.footer-col h5{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:6px;font-weight:700;}
.footer-col a,.footer-col span{transition:color .2s;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:26px;font-size:13px;color:#64748B;}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:48px;}
  .hero-visual{order:-1;}
  .visual-card{max-width:100%;}
  .about-grid{grid-template-columns:1fr;gap:36px;}
  .adv-grid{grid-template-columns:1fr;gap:40px;}
  .cards-3{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr 1fr;}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media (max-width:760px){
  .nav{
    position:fixed;top:76px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);padding:18px 24px 24px;
    box-shadow:0 20px 40px rgba(15,23,42,.10);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:all .28s var(--ease);
  }
  .nav.open{transform:none;opacity:1;pointer-events:auto;}
  .nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .nav a:last-child{border-bottom:none;}
  .menu-btn{display:flex;}
  .header-actions .btn{display:none;}
  .hero{padding:126px 0 48px;}
  .section{padding:70px 0;}
  .cards-4,.cards-3,.contact-grid,.adv-right{grid-template-columns:1fr;}
  .cta-band{padding:32px 26px;}
  .footer-inner{grid-template-columns:1fr;gap:32px;}
  .container{padding:0 18px;}
  .marquee{gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .visual-card{animation:none;}
  html{scroll-behavior:auto;}
}