:root{
  --navy:#0b2237; --navy2:#0f2f4c; --blue:#155e8a;
  --gold:#d9a441; --gold2:#f0c470;
  --ink:#22303f; --muted:#5d6e7f; --bg:#f5f7fa; --line:#e4eaf0;
  --radius:16px; --shadow:0 12px 32px rgba(11,34,55,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Plus Jakarta Sans',-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;color:var(--ink);line-height:1.75;background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:min(1180px,92%);margin-inline:auto}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(9,26,41,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:20px}
.logo{display:flex;align-items:center;gap:11px}
.logo img{width:46px;height:46px;border-radius:10px;object-fit:cover;border:2px solid rgba(255,255,255,.15)}
.logo-text{color:#fff;font-weight:800;font-size:1.15rem;letter-spacing:.5px;line-height:1.1}
.logo-text small{display:block;font-size:.6rem;font-weight:600;letter-spacing:2.5px;color:var(--gold2);text-transform:uppercase}
.nav-links{display:flex;gap:30px}
.nav-links a{color:#cfdeea;font-weight:600;font-size:.93rem;position:relative;padding:6px 0;transition:color .25s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--gold);transition:width .25s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:50px;font-weight:700;font-size:.92rem;transition:transform .25s,box-shadow .25s,background .25s;cursor:pointer;border:0}
.btn-primary{background:linear-gradient(135deg,var(--gold),#b97f22);color:#fff;box-shadow:0 8px 22px rgba(217,164,65,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(217,164,65,.45)}
.btn-ghost{border:2px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--navy2);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:.85rem}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:8px;z-index:101}
.hamburger span{display:block;width:26px;height:3px;background:#fff;margin:5px 0;border-radius:3px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:640px;display:flex;align-items:center;color:#fff;background:linear-gradient(100deg,rgba(7,22,36,.93) 0%,rgba(9,32,52,.78) 45%,rgba(9,32,52,.45) 100%),url('https://pearlcotton.wa-ya.cn/img/banner.jpg') center/cover no-repeat}
.hero-content{max-width:740px;padding:80px 0}
.eyebrow{display:inline-block;background:rgba(217,164,65,.16);border:1px solid rgba(217,164,65,.5);color:var(--gold2);font-size:.76rem;font-weight:700;letter-spacing:2.5px;text-transform:uppercase;padding:8px 18px;border-radius:50px;margin-bottom:24px}
.hero h1{font-size:clamp(2.1rem,5vw,3.5rem);line-height:1.15;font-weight:800;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--gold2)}
.hero p{font-size:1.1rem;color:#d7e3ee;max-width:620px;margin-bottom:36px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-badges{display:flex;gap:34px;margin-top:54px;flex-wrap:wrap}
.hero-badges div strong{display:block;font-size:1.65rem;font-weight:800;color:var(--gold2);line-height:1.2}
.hero-badges div span{font-size:.8rem;color:#b9c9d8}

/* ---------- Sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--bg)}
.section-head{max-width:740px;margin:0 auto 56px;text-align:center}
.section-head.left{margin-inline:0;text-align:left}
.kicker{color:var(--gold);font-weight:800;letter-spacing:2.5px;text-transform:uppercase;font-size:.76rem;display:block;margin-bottom:12px}
.section-head h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;line-height:1.2}
.section-head p{color:var(--muted);margin-top:16px}

/* ---------- Grids & cards ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 42px rgba(11,34,55,.16)}
.card-img{overflow:hidden;aspect-ratio:4/3;background:var(--bg)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.06)}
.card-body{padding:24px}
.card-body h3{font-size:1.12rem;font-weight:800;margin-bottom:8px}
.card-body h3 a:hover{color:var(--blue)}
.card-body p{color:var(--muted);font-size:.92rem;margin-bottom:14px}
.link-arrow{color:var(--blue);font-weight:700;font-size:.9rem}
.link-arrow::after{content:" \2192";transition:.25s;display:inline-block}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- Features ---------- */
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);height:100%}
.feature .f-icon{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(217,164,65,.18),rgba(217,164,65,.05));display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px}
.feature h3{font-size:1.03rem;font-weight:800;margin-bottom:8px}
.feature p{color:var(--muted);font-size:.9rem}

/* ---------- Media / lists ---------- */
.media-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.media-frame img{width:100%;height:100%;object-fit:cover}
.check-list li{position:relative;padding-left:32px;margin-bottom:12px}
.check-list li::before{content:"\2713";position:absolute;left:0;top:4px;width:20px;height:20px;background:var(--gold);color:#fff;border-radius:50%;font-size:.72rem;font-weight:800;display:flex;align-items:center;justify-content:center}

/* ---------- Page hero ---------- */
.page-hero{background:linear-gradient(100deg,rgba(7,22,36,.94),rgba(11,44,70,.82)),url('https://pearlcotton.wa-ya.cn/img/banner.jpg') center/cover;color:#fff;padding:96px 0 72px}
.page-hero h1{font-size:clamp(2rem,4.5vw,3rem);font-weight:800;margin:14px 0}
.page-hero p{color:#cfe0ec;max-width:660px}
.breadcrumb{font-size:.85rem;color:#9fb4c6}
.breadcrumb a{color:var(--gold2)}
.breadcrumb .sep{margin:0 8px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy) 0%,var(--blue) 100%);color:#fff;padding:66px 0;position:relative;overflow:hidden}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800;margin-bottom:8px}
.cta-inner p{color:#c8d9e7}

/* ---------- Footer ---------- */
.site-footer{background:#081726;color:#9fb4c6}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px}
.f-col h4{color:#fff;font-size:1rem;font-weight:800;margin-bottom:18px}
.f-col ul li{margin-bottom:10px;font-size:.92rem}
.f-col ul a:hover{color:var(--gold2)}
.f-brand p{font-size:.9rem;margin:16px 0 20px;max-width:310px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:.83rem}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow)}
.faq-q{width:100%;background:none;border:0;padding:20px 24px;font-family:inherit;font-size:1rem;font-weight:700;color:var(--ink);text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q .chev{color:var(--gold);font-weight:800;font-size:1.25rem;transition:transform .3s;flex-shrink:0}
.faq-item.open .faq-q .chev{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 24px;color:var(--muted);font-size:.95rem}
.faq-a-inner p{margin-bottom:12px}
.faq-a-inner ul{margin:0 0 12px 20px;list-style:disc}

/* ---------- Forms ---------- */
.contact-wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:38px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-weight:700;font-size:.87rem;margin-bottom:8px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:10px;font-family:inherit;font-size:.95rem;background:#fbfcfd;transition:border-color .25s,background .25s;color:var(--ink)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:0;border-color:var(--gold);background:#fff}
.form-group textarea{resize:vertical;min-height:130px}
.form-msg{display:none;padding:14px 18px;border-radius:10px;margin-bottom:18px;font-weight:600;font-size:.9rem}
.form-msg.ok{display:block;background:#e7f6ec;color:#1c7c3c;border:1px solid #bfe6c9}
.form-msg.err{display:block;background:#fdeaea;color:#b03030;border:1px solid #f3c1c1}
.info-card{background:var(--navy);color:#fff;border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.info-card h3{margin-bottom:16px;font-size:1.15rem}
.info-card p{color:#b9c9d8;font-size:.93rem;margin-bottom:14px}
.info-card strong{color:var(--gold2)}
.info-list li{display:flex;gap:12px;margin-bottom:14px;font-size:.93rem;color:#b9c9d8}
.info-list .ico{color:var(--gold2)}

/* ---------- Product detail ---------- */
.pd-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}
.pd-media{position:sticky;top:112px}
.pd-info .check-list{margin:20px 0 28px}
.trust-line{display:flex;gap:18px;flex-wrap:wrap;margin-top:22px;padding-top:20px;border-top:1px dashed var(--line);color:var(--muted);font-size:.87rem}
.trust-line span::before{content:"\2713  ";color:var(--gold);font-weight:800}
.spec-table{width:100%;border-collapse:collapse;margin-top:18px}
.spec-table th,.spec-table td{padding:13px 16px;border:1px solid var(--line);font-size:.92rem;text-align:left}
.spec-table th{background:var(--bg);width:36%;font-weight:700}
.prose p{margin-bottom:16px;color:var(--muted)}
.prose h2{font-size:1.5rem;font-weight:800;margin:38px 0 16px;color:var(--ink)}
.prose h3{font-size:1.12rem;font-weight:800;margin:24px 0 10px;color:var(--ink)}
.prose ul{margin:0 0 16px 20px;list-style:disc;color:var(--muted)}
.prose ul li{margin-bottom:6px}

/* ---------- Process ---------- */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:step}
.process .step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 18px;text-align:center;box-shadow:var(--shadow)}
.process .step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;font-size:1.5rem;font-weight:800;color:var(--gold);margin-bottom:8px}
.process .step h4{font-size:.9rem;font-weight:800}
.process .step p{font-size:.8rem;color:var(--muted);margin-top:6px}

/* ---------- Quote / values ---------- */
.quote-block{background:linear-gradient(120deg,var(--navy),var(--blue));color:#fff;border-radius:var(--radius);padding:44px;box-shadow:var(--shadow);position:relative}
.quote-block::before{content:"\201C";position:absolute;top:6px;left:26px;font-size:5rem;color:rgba(240,196,112,.35);font-family:Georgia,serif}
.quote-block p{font-size:1.15rem;font-weight:600;line-height:1.8;position:relative}
.quote-block small{display:block;margin-top:14px;color:var(--gold2);font-weight:700;letter-spacing:1px;text-transform:uppercase}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .pd-grid{grid-template-columns:1fr}
  .pd-media{position:static}
}
@media (max-width:860px){
  .nav-links{position:fixed;top:0;right:-100%;height:100vh;width:min(320px,82%);background:var(--navy);flex-direction:column;padding:96px 34px;gap:22px;transition:right .35s ease;z-index:99}
  .nav-links.open{right:0}
  .nav-links a{font-size:1.05rem}
  .hamburger{display:block}
  .hamburger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .hamburger.open span:nth-child(2){opacity:0}
  .hamburger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .grid-2,.contact-wrap{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .process{grid-template-columns:repeat(2,1fr)}
  .section{padding:60px 0}
  .hero{min-height:560px}
  .form-row{grid-template-columns:1fr}
  .nav-cta .btn{display:none}
}
@media (max-width:520px){
  .grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .process{grid-template-columns:1fr}
  .hero-badges{gap:22px}
}