/* 周炜食品官网 - 共享样式 | Powered by 参识AI */
:root{
  --bg:#0a1428;
  --bg-2:#0d1b2a;
  --bg-3:#11243f;
  --bg-card:#15294a;
  --line:rgba(201,169,97,.22);
  --line-2:rgba(255,255,255,.08);
  --gold:#c9a961;
  --gold-2:#e6c875;
  --gold-3:#8a7340;
  --red:#b8252b;
  --red-2:#e0383f;
  --text:#ffffff;
  --text-2:#c5cde0;
  --text-3:#8b95ad;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --radius:14px;
  --max:1240px;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{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 CN","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
h1,h2,h3,h4{font-weight:700;line-height:1.25;letter-spacing:.5px}
h2.title{font-size:clamp(1.7rem,3.4vw,2.6rem);text-align:center;margin-bottom:.5rem}
h2.title span{color:var(--gold)}
.subtitle{text-align:center;color:var(--text-3);font-size:.92rem;letter-spacing:3px;margin-bottom:3rem;text-transform:uppercase}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
section{padding:6rem 0;position:relative}
.eyebrow{display:inline-block;color:var(--gold);font-size:.82rem;letter-spacing:4px;text-transform:uppercase;margin-bottom:1rem;font-weight:600}
.eyebrow::before{content:"";display:inline-block;width:28px;height:1px;background:var(--gold);vertical-align:middle;margin-right:10px}

/* ===== 顶部导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:all .35s var(--ease);background:rgba(10,20,40,.4);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(6,13,26,.92);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--max);margin:0 auto;padding:0 24px;height:74px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.15rem;letter-spacing:1px}
.brand-mark{width:38px;height:38px;border:1.5px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--gold);font-family:"STKaiti","KaiTi",serif}
.brand small{display:block;font-size:.62rem;color:var(--text-3);letter-spacing:2px;font-weight:400;margin-top:-2px}
.nav-links{display:flex;align-items:center;gap:2rem;list-style:none}
.nav-links a{font-size:.92rem;color:var(--text-2);position:relative;padding:.3rem 0}
.nav-links a:hover{color:var(--gold)}
.nav-links a.active{color:var(--gold)}
.nav-links a.active::after,.nav-links a:hover::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--gold)}
.nav-cta{padding:.6rem 1.4rem;border:1px solid var(--gold);color:var(--gold);font-size:.88rem;letter-spacing:1px;border-radius:2px;transition:all .3s var(--ease)}
.nav-cta:hover{background:var(--gold);color:var(--bg)}
.nav-toggle{display:none;background:none;border:0;color:var(--text);font-size:1.6rem;cursor:pointer}

/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding:120px 0 4rem}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(6,13,26,.95) 0%,rgba(6,13,26,.82) 38%,rgba(10,20,40,.55) 70%,rgba(10,20,40,.4) 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--max);margin:0 auto;padding:0 24px;width:100%}
.hero-tag{display:inline-flex;align-items:center;gap:.6rem;color:var(--gold);font-size:.82rem;letter-spacing:3px;text-transform:uppercase;margin-bottom:1.5rem;border:1px solid var(--line);padding:.5rem 1rem;border-radius:2px;background:rgba(201,169,97,.06)}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold)}
.hero h1{font-size:clamp(2.4rem,5.6vw,4.4rem);line-height:1.15;margin-bottom:1.4rem;font-weight:800}
.hero h1 .line2{display:block;color:var(--gold);font-weight:300;font-size:.62em;letter-spacing:2px;margin-top:.5rem}
.hero p.lead{font-size:clamp(1rem,1.5vw,1.2rem);color:var(--text-2);max-width:680px;margin-bottom:2.5rem;line-height:1.9}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.6rem;padding:.95rem 2rem;font-size:.95rem;letter-spacing:1px;border-radius:2px;transition:all .3s var(--ease);cursor:pointer;border:0;font-family:inherit}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:var(--bg);font-weight:600}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(201,169,97,.35)}
.btn-outline{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-outline:hover{border-color:var(--gold);color:var(--gold);background:rgba(201,169,97,.06)}
.btn-arrow::after{content:"→";transition:transform .3s var(--ease)}
.btn-arrow:hover::after{transform:translateX(4px)}

/* ===== 数据条 ===== */
.stats{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:4rem 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.stat{background:var(--bg-2);padding:2.4rem 1.5rem;text-align:center}
.stat-num{font-size:clamp(2rem,3.6vw,3rem);font-weight:800;color:var(--gold);line-height:1;margin-bottom:.6rem;font-family:"Georgia","Times New Roman",serif;letter-spacing:-1px}
.stat-num small{font-size:.5em;color:var(--gold-2);font-weight:400;margin-left:.2em}
.stat-label{font-size:.86rem;color:var(--text-3);letter-spacing:2px}

/* ===== 优势卡片 ===== */
.adv-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1.5rem}
.adv-card{background:linear-gradient(180deg,var(--bg-card),var(--bg-2));border:1px solid var(--line-2);padding:2.2rem 1.6rem;border-radius:var(--radius);transition:all .35s var(--ease);position:relative;overflow:hidden}
.adv-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent);transform:scaleX(0);transition:transform .4s var(--ease)}
.adv-card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:var(--shadow)}
.adv-card:hover::before{transform:scaleX(1)}
.adv-num{font-size:.8rem;color:var(--gold-3);letter-spacing:2px;margin-bottom:1rem;font-weight:600}
.adv-icon{font-size:2rem;color:var(--gold);margin-bottom:1rem;font-family:"Georgia",serif}
.adv-card h3{font-size:1.1rem;margin-bottom:.7rem}
.adv-card p{font-size:.88rem;color:var(--text-3);line-height:1.7}

/* ===== 产品系列入口 ===== */
.series-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.8rem}
.series-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:340px;display:flex;align-items:flex-end;cursor:pointer;transition:transform .4s var(--ease)}
.series-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.series-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,20,40,.2) 0%,rgba(6,13,26,.85) 80%)}
.series-card:hover img{transform:scale(1.06)}
.series-body{position:relative;z-index:2;padding:2rem;color:var(--text);width:100%}
.series-body .s-num{color:var(--gold);font-size:.8rem;letter-spacing:3px;margin-bottom:.5rem}
.series-body h3{font-size:1.5rem;margin-bottom:.6rem}
.series-body p{color:var(--text-2);font-size:.9rem;margin-bottom:1rem}
.series-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--gold);font-size:.85rem;letter-spacing:1px}
.series-link::after{content:"→";transition:transform .3s var(--ease)}
.series-card:hover .series-link::after{transform:translateX(4px)}

/* ===== 三个稳定 ===== */
.stable-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line)}
.stable-item{padding:3rem 2.5rem;text-align:center;border-right:1px solid var(--line);position:relative}
.stable-item:last-child{border-right:0}
.stable-icon{width:64px;height:64px;border:1.5px solid var(--gold);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;color:var(--gold);font-size:1.6rem;font-weight:700}
.stable-item h3{font-size:1.2rem;margin-bottom:.8rem;color:var(--gold-2)}
.stable-item p{color:var(--text-3);font-size:.92rem}

/* ===== 合作客户 ===== */
.clients{background:var(--bg-2);padding:5rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.clients-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line-2);border:1px solid var(--line-2);border-radius:var(--radius);overflow:hidden}
.client{background:var(--bg-card);padding:2rem 1rem;text-align:center;display:flex;align-items:center;justify-content:center;min-height:90px;color:var(--text-2);font-weight:600;font-size:.98rem;letter-spacing:1px;transition:all .3s var(--ease)}
.client:hover{background:var(--bg-3);color:var(--gold)}
.client small{display:block;font-size:.7rem;color:var(--text-3);font-weight:400;margin-top:.3rem;letter-spacing:0}

/* ===== CTA ===== */
.cta-band{background:linear-gradient(135deg,var(--bg-2),var(--bg-3));border-top:1px solid var(--line);padding:5rem 0;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;top:50%;left:50%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(201,169,97,.08),transparent 70%);transform:translate(-50%,-50%);z-index:0}
.cta-band .wrap{position:relative;z-index:1}
.cta-band h2{font-size:clamp(1.8rem,3.2vw,2.6rem);margin-bottom:1rem}
.cta-band h2 span{color:var(--gold)}
.cta-band p{color:var(--text-2);margin-bottom:2rem;font-size:1.05rem}
.cta-phone{font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--gold);font-family:"Georgia",serif;letter-spacing:2px;margin:1rem 0 2rem}

/* ===== 页脚 ===== */
.footer{background:var(--bg-2);border-top:1px solid var(--line);padding:4rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
.footer-brand{font-size:1.3rem;font-weight:700;margin-bottom:1rem;display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:1rem}
.footer p{color:var(--text-3);font-size:.88rem;line-height:1.8;max-width:340px}
.footer h4{color:var(--text);font-size:.95rem;margin-bottom:1.2rem;letter-spacing:1px}
.footer ul{list-style:none}
.footer ul li{margin-bottom:.7rem}
.footer ul a{color:var(--text-3);font-size:.88rem}
.footer ul a:hover{color:var(--gold)}
.footer-contact li{color:var(--text-3);font-size:.88rem;margin-bottom:.7rem}
.footer-contact strong{color:var(--text-2)}
.footer-bottom{border-top:1px solid var(--line-2);padding-top:1.8rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;color:var(--text-3);font-size:.82rem}
.footer-bottom .powered{color:var(--text-3)}
.footer-bottom .powered a{color:var(--gold)}

/* ===== 内页 Hero ===== */
.page-hero{padding:10rem 0 5rem;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{position:absolute;inset:0;z-index:0}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.35}
.page-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,13,26,.92),rgba(6,13,26,.7))}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(2rem,4.5vw,3.4rem);margin-bottom:1rem}
.page-hero h1 span{color:var(--gold)}
.page-hero p{color:var(--text-2);font-size:1.05rem;max-width:680px}
.breadcrumb{font-size:.82rem;color:var(--text-3);margin-bottom:1.5rem;letter-spacing:1px}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{color:var(--gold)}

/* ===== 产品详情 ===== */
.prod-series{margin-bottom:5rem}
.prod-series-head{display:flex;align-items:baseline;gap:1.5rem;margin-bottom:2.5rem;border-bottom:1px solid var(--line);padding-bottom:1.5rem;flex-wrap:wrap}
.prod-series-head .ps-tag{color:var(--gold);font-size:.8rem;letter-spacing:3px;font-weight:600}
.prod-series-head h2{font-size:1.8rem}
.prod-series-head p{color:var(--text-3);font-size:.92rem;flex:1;min-width:280px}
.prod-list{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.prod-card{background:var(--bg-card);border:1px solid var(--line-2);border-radius:var(--radius);overflow:hidden;transition:all .35s var(--ease)}
.prod-card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:var(--shadow)}
.prod-card .pc-img{aspect-ratio:1/1;overflow:hidden;background:var(--bg-3)}
.prod-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.prod-card:hover .pc-img img{transform:scale(1.06)}
.prod-card .pc-body{padding:1.4rem}
.prod-card h3{font-size:1.05rem;margin-bottom:.5rem;color:var(--gold-2)}
.prod-card .pc-sub{font-size:.78rem;color:var(--text-3);letter-spacing:1px;margin-bottom:.7rem;text-transform:uppercase}
.prod-card ul{list-style:none;font-size:.84rem;color:var(--text-2)}
.prod-card ul li{padding-left:1rem;position:relative;margin-bottom:.35rem;line-height:1.6}
.prod-card ul li::before{content:"";position:absolute;left:0;top:.7em;width:5px;height:5px;background:var(--gold);border-radius:50%}

/* ===== 特色产品（小卡片） ===== */
.tese-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1.2rem}
.tese-card{background:var(--bg-card);border:1px solid var(--line-2);border-radius:var(--radius);overflow:hidden;text-align:center;transition:all .3s var(--ease)}
.tese-card:hover{transform:translateY(-4px);border-color:var(--line)}
.tese-card img{aspect-ratio:1/1;object-fit:cover;width:100%}
.tese-card .tc-name{padding:.9rem;font-size:.9rem;color:var(--text-2);font-weight:600}
.tese-card:hover .tc-name{color:var(--gold)}

/* ===== 品质图标条 ===== */
.qc-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:1.5rem;margin-bottom:3rem}
.qc-item{background:var(--bg-card);border:1px solid var(--line-2);border-radius:var(--radius);padding:2rem 1.2rem;text-align:center;transition:all .3s var(--ease);position:relative}
.qc-item:hover{border-color:var(--line);transform:translateY(-4px)}
.qc-step{position:absolute;top:.8rem;right:.9rem;font-size:.7rem;color:var(--gold-3);font-weight:700;letter-spacing:1px}
.qc-icon{width:54px;height:54px;border:1.5px solid var(--gold);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;color:var(--gold);font-size:1.3rem;font-weight:700}
.qc-item h3{font-size:.98rem;margin-bottom:.6rem;color:var(--gold-2)}
.qc-item p{font-size:.8rem;color:var(--text-3);line-height:1.6}

/* ===== 保障体系 ===== */
.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.guarantee-card{background:linear-gradient(180deg,var(--bg-card),var(--bg-2));border:1px solid var(--line-2);border-radius:var(--radius);padding:2.2rem 1.6rem;border-top:2px solid var(--gold);transition:all .3s var(--ease)}
.guarantee-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.guarantee-card .g-icon{font-size:1.8rem;color:var(--gold);margin-bottom:1rem}
.guarantee-card h3{font-size:1.1rem;margin-bottom:.8rem;color:var(--text)}
.guarantee-card ul{list-style:none;font-size:.86rem;color:var(--text-3)}
.guarantee-card ul li{padding-left:1.1rem;position:relative;margin-bottom:.5rem;line-height:1.6}
.guarantee-card ul li::before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:700}

/* ===== 认证条 ===== */
.cert-band{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:3rem;display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.cert-item{border-right:1px solid var(--line);padding:0 1rem}
.cert-item:last-child{border-right:0}
.cert-num{font-size:2.4rem;font-weight:800;color:var(--gold);font-family:"Georgia",serif;line-height:1;margin-bottom:.5rem}
.cert-num small{font-size:.5em;color:var(--gold-2);font-weight:400}
.cert-label{font-size:.85rem;color:var(--text-3);letter-spacing:1px}

/* ===== 关于页时间线 ===== */
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.story-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.story-img img{width:100%}
.story-text h2{font-size:1.9rem;margin-bottom:1.5rem}
.story-text h2 span{color:var(--gold)}
.story-text p{color:var(--text-2);margin-bottom:1.2rem;line-height:1.95}
.story-quote{border-left:2px solid var(--gold);padding:1rem 1.5rem;margin:1.5rem 0;background:rgba(201,169,97,.05);font-style:italic;color:var(--gold-2);font-size:1.02rem}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:3rem;align-items:start}
.contact-card{background:linear-gradient(180deg,var(--bg-card),var(--bg-2));border:1px solid var(--line);border-radius:var(--radius);padding:2.5rem;margin-bottom:1.5rem}
.contact-card h3{font-size:1.3rem;margin-bottom:1.5rem;color:var(--gold-2);display:flex;align-items:center;gap:.6rem}
.contact-card h3::before{content:"";width:4px;height:1.2em;background:var(--gold);display:inline-block}
.contact-row{display:flex;align-items:flex-start;gap:1.2rem;padding:1.2rem 0;border-bottom:1px solid var(--line-2)}
.contact-row:last-child{border-bottom:0}
.contact-row .cr-label{color:var(--text-3);font-size:.85rem;min-width:80px;letter-spacing:1px}
.contact-row .cr-value{color:var(--text);font-weight:600;flex:1}
.contact-row .cr-value.big{font-size:1.4rem;color:var(--gold);font-family:"Georgia",serif;letter-spacing:1px}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2rem}
.svc-card{background:var(--bg-card);border:1px solid var(--line-2);border-radius:var(--radius);padding:2rem 1.4rem;border-left:3px solid var(--gold);transition:all .3s var(--ease)}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.svc-num{color:var(--gold);font-size:.8rem;letter-spacing:2px;font-weight:700;margin-bottom:.8rem}
.svc-card h3{font-size:1.05rem;margin-bottom:.8rem}
.svc-card p{color:var(--text-3);font-size:.86rem;line-height:1.7}

/* ===== 分隔装饰 ===== */
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:0}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .qc-grid{grid-template-columns:repeat(3,1fr)}
  .guarantee-grid{grid-template-columns:repeat(2,1fr)}
  .prod-list{grid-template-columns:repeat(3,1fr)}
  .tese-grid{grid-template-columns:repeat(4,1fr)}
  .clients-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
  .cert-band{grid-template-columns:repeat(2,1fr);gap:1.5rem}
  .cert-item:nth-child(2){border-right:0}
  .contact-grid{grid-template-columns:1fr}
  .svc-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  section{padding:4rem 0}
  .nav-links{display:none;position:fixed;top:74px;left:0;right:0;background:rgba(6,13,26,.98);flex-direction:column;padding:2rem;gap:1.5rem;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:1fr}
  .series-grid{grid-template-columns:1fr}
  .stable-grid{grid-template-columns:1fr}
  .stable-item{border-right:0;border-bottom:1px solid var(--line)}
  .stable-item:last-child{border-bottom:0}
  .prod-list{grid-template-columns:repeat(2,1fr)}
  .tese-grid{grid-template-columns:repeat(2,1fr)}
  .qc-grid{grid-template-columns:1fr}
  .guarantee-grid{grid-template-columns:1fr}
  .clients-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .cert-band{grid-template-columns:1fr;padding:2rem}
  .cert-item{border-right:0;border-bottom:1px solid var(--line);padding-bottom:1rem}
  .cert-item:last-child{border-bottom:0}
  .story-grid{grid-template-columns:1fr;gap:2rem}
  .hero{min-height:auto;padding:8rem 0 3rem}
  .prod-series-head{flex-direction:column;align-items:flex-start;gap:.5rem}
}