/* CHINAAFRICA.LINK — China–Africa One-Stop Service Platform
   Static stylesheet. No external dependencies. */

:root{
  --navy:#0b1f33;
  --navy-2:#12304d;
  --ink:#12212e;
  --muted:#5b6b7b;
  --line:#e4e9ef;
  --bg:#ffffff;
  --bg-soft:#f5f8fb;
  --red:#c8102e;        /* China red */
  --red-dark:#a00c24;
  --green:#0f8a4f;      /* Africa green */
  --gold:#e0a21c;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,31,51,.08);
  --shadow-lg:0 22px 60px rgba(11,31,51,.16);
  --maxw:1200px;
  --header-h:70px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{
  margin:0;
  font-family:"Inter","Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.25;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.6rem,3vw,2.3rem)}
h3{font-size:1.18rem}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.container.narrow{max-width:860px}
.section{padding:78px 0}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--navy);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}
.section.dark p{color:rgba(255,255,255,.78)}
.eyebrow{
  display:inline-block;font-size:.76rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--red);margin-bottom:14px
}
.section.dark .eyebrow{color:var(--gold)}
.lead{font-size:1.06rem;color:var(--muted);max-width:720px}
.section.dark .lead{color:rgba(255,255,255,.78)}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ---------- Header ---------- */
.header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:100;
  display:flex;align-items:center;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.header.scrolled{box-shadow:0 6px 22px rgba(11,31,51,.10)}
.header .container{display:flex;align-items:center;gap:18px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.06rem;letter-spacing:-.02em;color:var(--navy);white-space:nowrap}
.logo img{height:34px;width:auto}
.logo .logo-tld{color:var(--red)}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{
  padding:9px 12px;border-radius:9px;font-size:.93rem;font-weight:600;color:var(--ink);
  transition:background .15s,color .15s
}
.nav a:hover{background:var(--bg-soft);color:var(--red)}
.nav a.active{color:var(--red)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.lang-switch{
  display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff
}
.lang-switch button{
  border:0;background:transparent;cursor:pointer;font-size:.78rem;font-weight:700;
  padding:6px 11px;color:var(--muted);letter-spacing:.02em
}
.lang-switch button.on{background:var(--navy);color:#fff}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:22px;height:2px;background:var(--navy);margin:4px 0;border-radius:2px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  padding:13px 22px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s;
  white-space:nowrap
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 20px rgba(200,16,46,.28)}
.btn-primary:hover{background:var(--red-dark)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--navy-2)}
.btn-outline{border-color:var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-wa{background:#25D366;color:#fff;box-shadow:0 8px 20px rgba(37,211,102,.3)}
.btn-wa:hover{background:#1ebd59}
.btn-sm{padding:9px 16px;font-size:.85rem}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:calc(var(--header-h) + 68px) 0 74px;
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(224,162,28,.22), transparent 60%),
    radial-gradient(900px 480px at 6% 12%, rgba(15,138,79,.18), transparent 62%),
    linear-gradient(150deg,#0b1f33 0%,#12304d 58%,#0e2740 100%);
  color:#fff;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:rgba(255,255,255,.12)
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.hero h1{color:#fff;font-size:clamp(2.1rem,4.8vw,3.6rem)}
.hero h1 .hl{color:var(--gold)}
.hero .sub{font-size:1.08rem;color:rgba(255,255,255,.82);max-width:590px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px}
.hero-tags span{
  font-size:.8rem;font-weight:600;padding:6px 13px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.9)
}
.hero-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:26px;backdrop-filter:blur(6px);box-shadow:var(--shadow-lg)
}
.hero-card h3{color:#fff;font-size:1rem;margin-bottom:16px;letter-spacing:.02em}
.hero-card ul{list-style:none;margin:0;padding:0}
.hero-card li{
  display:flex;gap:11px;align-items:flex-start;padding:9px 0;
  border-bottom:1px dashed rgba(255,255,255,.14);font-size:.92rem;color:rgba(255,255,255,.88)
}
.hero-card li:last-child{border-bottom:0}
.hero-card li b{color:#fff;font-weight:700}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:38px}
.stat{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:16px 14px;text-align:center
}
.stat b{display:block;font-size:1.7rem;color:var(--gold);line-height:1.2;font-weight:900}
.stat span{font-size:.78rem;color:rgba(255,255,255,.72)}

/* ---------- Services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.svc{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;position:relative;overflow:hidden
}
.svc::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--red);opacity:0;transition:opacity .18s}
.svc:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d7dee7}
.svc:hover::before{opacity:1}
.svc .ico{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(200,16,46,.12),rgba(15,138,79,.12));margin-bottom:16px
}
.svc .ico svg{width:24px;height:24px;stroke:var(--navy);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.svc h3{font-size:1.05rem;margin-bottom:8px}
.svc p{font-size:.9rem;color:var(--muted);margin:0}
.svc .more{display:inline-block;margin-top:14px;font-size:.85rem;font-weight:700;color:var(--red)}
.svc .more:hover{color:var(--red-dark)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:42px;counter-reset:s}
.step{position:relative;padding-top:8px}
.step .num{
  width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;font-weight:900;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:1.05rem;
  box-shadow:0 8px 18px rgba(11,31,51,.18)
}
.step h3{font-size:1rem;margin-bottom:6px}
.step p{font-size:.88rem;color:var(--muted);margin:0}
.step:not(:last-child)::after{
  content:"";position:absolute;top:30px;left:60px;right:-14px;height:1px;
  background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px)
}

/* ---------- Coverage ---------- */
.cov-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:38px}
.cov-box{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:26px}
.cov-box h3{display:flex;align-items:center;gap:10px;font-size:1.05rem}
.cov-box .flag{font-size:1.3rem}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chips span{
  font-size:.84rem;padding:6px 12px;border-radius:8px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.15);color:rgba(255,255,255,.9)
}

/* ---------- Why us ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:38px}
.why{background:var(--bg-soft);border-radius:var(--radius);padding:26px 24px;border:1px solid var(--line)}
.why h3{font-size:1.02rem;margin-bottom:8px;display:flex;gap:10px;align-items:center}
.why h3 .tick{color:var(--green);font-weight:900}
.why p{font-size:.9rem;color:var(--muted);margin:0}

/* ---------- Page hero (inner) ---------- */
.page-hero{
  padding:calc(var(--header-h) + 58px) 0 54px;
  background:linear-gradient(140deg,#0b1f33,#12304d);color:#fff;text-align:center
}
.page-hero h1{color:#fff}
.page-hero p{color:rgba(255,255,255,.8);max-width:700px;margin:0 auto}
.crumb{font-size:.84rem;color:rgba(255,255,255,.62);margin-bottom:14px}
.crumb a{color:rgba(255,255,255,.85)}
.crumb a:hover{color:var(--gold)}

/* ---------- Feature blocks ---------- */
.feat{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:60px}
.feat.rev .feat-text{order:2}
.feat-text h2{font-size:clamp(1.4rem,2.4vw,1.9rem)}
.feat-list{list-style:none;padding:0;margin:20px 0 0}
.feat-list li{
  display:flex;gap:11px;align-items:flex-start;padding:8px 0;font-size:.94rem;color:var(--muted)
}
.feat-list li::before{content:"✓";color:var(--green);font-weight:900;flex:none}
.feat-visual{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:18px;padding:30px;min-height:260px;
  display:flex;flex-direction:column;justify-content:center;gap:14px
}
.feat-visual .row{
  display:flex;justify-content:space-between;gap:14px;padding:12px 14px;background:#fff;
  border:1px solid var(--line);border-radius:10px;font-size:.9rem
}
.feat-visual .row b{color:var(--navy)}
.feat-visual .big{font-size:1.6rem;font-weight:900;color:var(--red)}

/* ---------- Pricing / table ---------- */
.table-wrap{overflow-x:auto;margin-top:32px;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;min-width:620px;background:#fff}
th,td{padding:14px 18px;text-align:left;font-size:.92rem;border-bottom:1px solid var(--line)}
th{background:var(--navy);color:#fff;font-weight:700;font-size:.86rem;letter-spacing:.03em}
tbody tr:hover{background:var(--bg-soft)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:38px auto 0}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden}
.faq-q{
  width:100%;text-align:left;border:0;background:none;cursor:pointer;padding:17px 20px;
  font-size:.98rem;font-weight:700;color:var(--navy);display:flex;justify-content:space-between;gap:16px;align-items:center
}
.faq-q i{font-style:normal;color:var(--red);font-size:1.2rem;transition:transform .2s}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{display:none;padding:0 20px 18px;font-size:.92rem;color:var(--muted)}
.faq-item.open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta{
  background:linear-gradient(135deg,var(--red) 0%,#8f0f2a 100%);color:#fff;padding:64px 0;text-align:center
}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.85);max-width:640px;margin:0 auto 26px}
.cta-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ---------- Contact cards ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.c-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;text-align:center;
  transition:box-shadow .18s,transform .18s
}
.c-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.c-card .ci{font-size:1.8rem;margin-bottom:10px}
.c-card h3{font-size:1rem;margin-bottom:6px}
.c-card p{margin:0;font-size:.9rem;color:var(--muted)}
.c-card a{color:var(--red);font-weight:700}

/* ---------- Footer ---------- */
.footer{background:var(--navy);color:rgba(255,255,255,.72);padding:62px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer h4{color:#fff;font-size:.92rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px}
.footer .f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:900;font-size:1.05rem;margin-bottom:14px}
.footer .f-brand img{height:34px}
.footer p{font-size:.88rem}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin-bottom:9px;font-size:.88rem}
.footer li a:hover{color:#fff}
.footer .social{display:flex;gap:10px;margin-top:16px}
.footer .social a{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;font-size:.95rem;transition:background .18s
}
.footer .social a:hover{background:rgba(255,255,255,.12);color:#fff}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.82rem
}
.footer-bottom a:hover{color:#fff}
.sister{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.sister a{
  font-size:.78rem;padding:5px 11px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
  color:rgba(255,255,255,.8)
}
.sister a:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- Floating buttons ---------- */
.floaters{position:fixed;right:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;gap:10px}
.floaters a{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:1.3rem;box-shadow:0 10px 24px rgba(0,0,0,.22);transition:transform .18s
}
.floaters a:hover{transform:scale(1.07)}
.floaters .f-wa{background:#25D366}
.floaters .f-mail{background:var(--navy)}
.floaters .f-top{background:rgba(11,31,51,.55)}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .cov-grid,.feat,.contact-grid{grid-template-columns:1fr}
  .feat.rev .feat-text{order:0}
}
@media (max-width:760px){
  .nav{
    position:fixed;top:var(--header-h);left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px 18px 18px;display:none;box-shadow:var(--shadow)
  }
  .nav.open{display:flex}
  .nav a{padding:12px 4px;font-size:1rem;border-bottom:1px solid var(--line)}
  .burger{display:block;margin-left:auto}
  .header-actions{margin-left:0}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .svc-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step:not(:last-child)::after{display:none}
  .why-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .hero{padding-top:calc(var(--header-h) + 44px)}
}
[hidden-lang]{display:none !important}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}