/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;line-height:1.7;color:#1a1a2e;background:#fafbff}
a{text-decoration:none;transition:color .2s,opacity .2s}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}

/* ===== CSS Variables ===== */
:root{
  --brand:#e63946;
  --brand-dark:#c1121f;
  --accent:#f4a261;
  --bg-light:#fafbff;
  --bg-section:#f0f4ff;
  --bg-dark:#1a1a2e;
  --bg-dark2:#16213e;
  --text-primary:#1a1a2e;
  --text-secondary:#4a4a68;
  --text-light:#fff;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow-md:0 4px 20px rgba(0,0,0,.08);
  --shadow-lg:0 8px 40px rgba(0,0,0,.12);
  --radius:12px;
  --radius-lg:20px;
  --max-w:1200px;
}

/* ===== Utilities ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section-pad{padding:80px 0}
.text-center{text-align:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(0,0,0,.06);padding:14px 0}
.nav .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav-brand{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:800;color:var(--brand)}
.nav-brand img{width:36px;height:36px;border-radius:50%}
.nav-links{display:flex;gap:28px;font-size:.9rem;font-weight:500}
.nav-links a{color:var(--text-secondary)}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;gap:10px}
.nav-cta a{padding:8px 18px;border-radius:8px;font-size:.85rem;font-weight:700}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark)}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff}
.mobile-toggle{display:none;background:none;border:2px solid var(--text-secondary);border-radius:8px;padding:6px 10px;font-size:1.2rem;cursor:pointer;color:var(--text-secondary)}
.mobile-menu{display:none;flex-direction:column;gap:12px;padding:16px 0;border-top:1px solid rgba(0,0,0,.06);margin-top:12px}
.mobile-menu a{font-size:.95rem;color:var(--text-secondary);font-weight:500}
.mobile-menu a:hover{color:var(--brand)}
.mobile-menu.open{display:flex}

/* Language Switch */
.lang-switch{display:flex;align-items:center;gap:4px;margin-left:12px}
.lang-switch a{padding:4px 12px;border-radius:6px;font-size:.8rem;font-weight:600;color:var(--text-secondary);opacity:.5;transition:all .2s;text-decoration:none}
.lang-switch a.active{opacity:1;background:var(--brand);color:#fff}
.lang-switch a:hover{opacity:.85}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#fafbff 0%,#e8ecff 50%,#fce4ec 100%);padding:100px 0 80px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-120px;right:-120px;width:400px;height:400px;background:radial-gradient(circle,rgba(230,57,70,.12),transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-80px;left:-80px;width:320px;height:320px;background:radial-gradient(circle,rgba(244,162,97,.1),transparent 70%);border-radius:50%}
.hero .container{position:relative;z-index:2;text-align:center}
.hero h1{font-size:clamp(2.2rem,5.5vw,3.8rem);font-weight:900;line-height:1.15;margin-bottom:20px;color:var(--text-primary)}
.hero h1 .highlight{color:var(--brand);display:inline}
.hero .subtitle{font-size:clamp(1rem,2.5vw,1.25rem);color:var(--text-secondary);max-width:700px;margin:0 auto 36px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-btns a{padding:14px 36px;border-radius:var(--radius);font-size:1.05rem;font-weight:700;display:inline-flex;align-items:center;gap:8px}
.hero-btns .btn-hero{background:var(--brand);color:#fff;box-shadow:0 4px 20px rgba(230,57,70,.3)}
.hero-btns .btn-hero:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 6px 28px rgba(230,57,70,.35)}
.hero-btns .btn-tg{background:var(--bg-dark);color:#fff}
.hero-btns .btn-tg:hover{background:var(--bg-dark2);transform:translateY(-2px)}
.hero-img{margin:48px auto 0;max-width:640px;width:100%;aspect-ratio:16/9;background:#e8ecff;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:#8899bb;font-size:.95rem;border:2px dashed #c5cdee}

/* ===== Section Headings ===== */
.section-heading{text-align:center;margin-bottom:56px}
.section-heading h2{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;color:var(--text-primary);margin-bottom:12px}
.section-heading p{font-size:1.05rem;color:var(--text-secondary);max-width:600px;margin:0 auto}
.section-heading .en{font-size:.95rem;color:#7a7a9a;margin-top:6px}

/* ===== Features Grid ===== */
.features{background:var(--bg-section)}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px}
.feature-card{background:#fff;border-radius:var(--radius-lg);padding:36px 28px;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s;border:1px solid rgba(0,0,0,.04)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.feature-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:18px}
.feature-icon.red{background:rgba(230,57,70,.1);color:var(--brand)}
.feature-icon.blue{background:rgba(67,97,238,.1);color:#4361ee}
.feature-icon.green{background:rgba(46,196,134,.1);color:#2ec486}
.feature-icon.orange{background:rgba(244,162,97,.1);color:#e76f51}
.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--text-primary)}
.feature-card .en-title{font-size:.85rem;color:#8899bb;font-weight:500;margin-bottom:10px}
.feature-card p{color:var(--text-secondary);font-size:.92rem;line-height:1.7}

/* ===== Service Areas ===== */
.areas{background:#fff}
.areas-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
.area-card{background:var(--bg-section);border-radius:var(--radius);padding:24px 20px;text-align:center;transition:transform .3s,box-shadow .3s;border:1px solid rgba(0,0,0,.03)}
.area-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.area-card .icon{font-size:1.8rem;margin-bottom:10px}
.area-card h3{font-size:1rem;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.area-card .en-name{font-size:.8rem;color:#8899bb}

/* ===== How It Works ===== */
.how-it-works{background:var(--bg-section)}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;counter-reset:step}
.step{text-align:center;position:relative}
.step::before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:52px;height:52px;background:var(--brand);color:#fff;font-weight:800;font-size:1.3rem;border-radius:50%;margin:0 auto 18px}
.step h3{font-size:1.05rem;font-weight:700;margin-bottom:6px;color:var(--text-primary)}
.step .en-title{font-size:.82rem;color:#8899bb;margin-bottom:8px}
.step p{font-size:.9rem;color:var(--text-secondary);line-height:1.7}

/* ===== Dark CTA Section ===== */
.dark-cta{background:var(--bg-dark);color:var(--text-light);text-align:center}
.dark-cta h2{font-size:clamp(1.5rem,4vw,2.2rem);font-weight:800;margin-bottom:14px}
.dark-cta p{color:rgba(255,255,255,.7);max-width:600px;margin:0 auto 32px;font-size:1rem}
.dark-cta .cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.dark-cta .cta-btns a{padding:14px 32px;border-radius:var(--radius);font-size:1rem;font-weight:700;display:inline-flex;align-items:center;gap:8px}
.dark-cta .cta-btns .btn-w{background:#fff;color:var(--bg-dark)}
.dark-cta .cta-btns .btn-w:hover{background:#f0f0f0}
.dark-cta .cta-btns .btn-ghost{border:1.5px solid rgba(255,255,255,.4);color:#fff}
.dark-cta .cta-btns .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ===== FAQ ===== */
.faq{background:#fff}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(0,0,0,.06);padding:20px 0}
.faq-q{display:flex;justify-content:space-between;align-items:center;cursor:pointer;gap:12px}
.faq-q h3{font-size:1rem;font-weight:600;color:var(--text-primary);flex:1}
.faq-q .arrow{font-size:1.2rem;color:var(--text-secondary);transition:transform .3s;flex-shrink:0}
.faq-item.active .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding-right:32px}
.faq-item.active .faq-a{max-height:400px}
.faq-a p{padding:12px 0 4px;color:var(--text-secondary);font-size:.92rem;line-height:1.8}

/* ===== SEO Article ===== */
.seo-article{background:var(--bg-section)}
.seo-article .article-content{max-width:800px;margin:0 auto;font-size:.95rem;color:var(--text-secondary);line-height:1.9}
.seo-article .article-content h3{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin:28px 0 12px}
.seo-article .article-content p{margin-bottom:16px}
.seo-article .article-content a{color:var(--brand);font-weight:500}
.seo-article .article-content a:hover{text-decoration:underline}

/* ===== Footer ===== */
.footer{background:var(--bg-dark2);color:rgba(255,255,255,.6);padding:48px 0 28px;font-size:.88rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:36px;margin-bottom:36px}
.footer h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:14px}
.footer a{color:rgba(255,255,255,.6)}
.footer a:hover{color:#fff}
.footer ul{display:flex;flex-direction:column;gap:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:22px;text-align:center;font-size:.82rem}

/* ===== Placeholder Image ===== */
.img-placeholder{background:#e8ecff;border:2px dashed #c5cdee;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#8899bb;font-size:.85rem;text-align:center;padding:12px}

/* ===== Responsive ===== */
@media(max-width:768px){
  .nav-links,.nav-cta{display:none}
  .mobile-toggle{display:block}
  .hero{padding:72px 0 56px}
  .section-pad{padding:56px 0}
  .hero-btns{flex-direction:column;align-items:center}
  .hero-btns a{width:100%;max-width:320px;justify-content:center}
  .features-grid{grid-template-columns:1fr}
  .areas-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .dark-cta .cta-btns{flex-direction:column;align-items:center}
  .dark-cta .cta-btns a{width:100%;max-width:320px;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
}
@media(min-width:769px){
  .mobile-toggle{display:none}
  .mobile-menu{display:none!important}
}