/* ============================================
   品维扬食品 - 企业官网
   风格：简约大气
   ============================================ */

/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --c-primary:#9B2D20;
  --c-primary-d:#6B1F16;
  --c-primary-l:#C44A38;
  --c-accent:#C9A961;
  --c-accent-l:#E0C894;
  --c-dark:#1A1A1A;
  --c-bg:#FAF8F5;
  --c-bg-alt:#F3EDE4;
  --c-card:#FFFFFF;
  --c-text:#2D2D2D;
  --c-text-l:#666;
  --c-muted:#999;
  --c-border:#E8E2D9;
  --c-white:#FFF;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow-md:0 4px 24px rgba(0,0,0,.08);
  --shadow-lg:0 12px 48px rgba(0,0,0,.12);
  --radius:8px;
  --radius-lg:16px;
  --transition:all .35s cubic-bezier(.4,0,.2,1);
  --font-h:'Noto Serif SC','STSong','SimSun',serif;
  --font-b:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --max-w:1200px;
}

html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-b);color:var(--c-text);background:var(--c-bg);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
section{position:relative}

/* ===== Layout ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:90px 0}
.section-head{text-align:center;margin-bottom:56px}
.section-head .tag{display:inline-block;font-size:14px;color:var(--c-accent);letter-spacing:2px;text-transform:uppercase;font-weight:600;margin-bottom:12px}
.section-head h2{font-family:var(--font-h);font-size:36px;color:var(--c-dark);font-weight:700;letter-spacing:1px}
.section-head p{font-size:16px;color:var(--c-text-l);margin-top:16px;max-width:600px;margin-left:auto;margin-right:auto}
.divider{width:56px;height:3px;background:var(--c-accent);margin:20px auto 0;border-radius:2px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;font-size:15px;font-weight:600;border-radius:var(--radius);cursor:pointer;transition:var(--transition);border:none;font-family:var(--font-b);letter-spacing:1px}
.btn-primary{background:var(--c-primary);color:var(--c-white)}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline{background:transparent;color:var(--c-white);border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:var(--c-white);color:var(--c-primary);border-color:var(--c-white)}
.btn-accent{background:var(--c-accent);color:var(--c-dark)}
.btn-accent:hover{background:var(--c-accent-l);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-lg{padding:16px 44px;font-size:16px}

/* ===== Navigation ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:var(--transition);padding:18px 0}
.nav.scrolled{background:rgba(255,255,255,.98);box-shadow:var(--shadow-sm);padding:12px 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-h);font-size:22px;font-weight:700;color:var(--c-white);transition:var(--transition)}
.nav.scrolled .nav-logo{color:var(--c-dark)}
.nav-logo .logo-icon{width:40px;height:40px;background:var(--c-accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{font-size:15px;color:rgba(255,255,255,.9);font-weight:500;position:relative;transition:var(--transition)}
.nav.scrolled .nav-links a{color:var(--c-text)}
.nav-links a::after{content:'';position:absolute;bottom:-6px;left:0;width:0;height:2px;background:var(--c-accent);transition:width .3s ease}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a:hover,.nav-links a.active{color:var(--c-accent)}
.nav.scrolled .nav-links a:hover,.nav.scrolled .nav-links a.active{color:var(--c-primary)}
.nav-cta{display:flex;align-items:center;gap:16px}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px}
.nav-toggle span{width:26px;height:2px;background:var(--c-white);border-radius:2px;transition:var(--transition)}
.nav.scrolled .nav-toggle span{background:var(--c-dark)}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(6px,6px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}

/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#9B2D20 0%,#6B1F16 100%)}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background:radial-gradient(ellipse at 20% 30%,rgba(201,169,97,.15) 0%,transparent 50%),
             radial-gradient(ellipse at 80% 70%,rgba(201,169,97,.1) 0%,transparent 50%)}
.hero-pattern{position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.3) 2px,transparent 2px),
                   radial-gradient(circle at 75% 75%,rgba(255,255,255,.3) 2px,transparent 2px);
  background-size:60px 60px}
.hero-content{position:relative;z-index:2;text-align:center;color:var(--c-white);padding-top:80px}
.hero-tag{display:inline-block;padding:6px 20px;background:rgba(201,169,97,.2);border:1px solid rgba(201,169,97,.4);border-radius:50px;font-size:13px;letter-spacing:2px;margin-bottom:24px;color:var(--c-accent-l)}
.hero h1{font-family:var(--font-h);font-size:56px;font-weight:700;line-height:1.3;letter-spacing:4px;margin-bottom:20px;text-shadow:0 4px 30px rgba(0,0,0,.3)}
.hero h1 .highlight{color:var(--c-accent-l)}
.hero .subtitle{font-size:18px;color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 40px;line-height:1.8;letter-spacing:1px}
.hero-btns{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;text-align:center;color:rgba(255,255,255,.6)}
.hero-scroll .mouse{width:26px;height:42px;border:2px solid rgba(255,255,255,.4);border-radius:14px;margin:0 auto 8px;position:relative}
.hero-scroll .mouse::before{content:'';position:absolute;top:6px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:rgba(255,255,255,.6);border-radius:2px;animation:scrollDown 1.8s infinite}
.hero-scroll span{font-size:12px;letter-spacing:1px}
@keyframes scrollDown{0%{opacity:0;transform:translate(-50%,0)}50%{opacity:1}100%{opacity:0;transform:translate(-50%,14px)}}

/* ===== Features ===== */
.features{background:var(--c-bg)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.feature-card{text-align:center;padding:40px 24px;background:var(--c-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid var(--c-border)}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--c-accent-l)}
.feature-icon{width:72px;height:72px;margin:0 auto 20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:32px;background:linear-gradient(135deg,var(--c-bg-alt) 0%,var(--c-accent-l) 100%)}
.feature-card h3{font-family:var(--font-h);font-size:20px;color:var(--c-dark);margin-bottom:12px;font-weight:600}
.feature-card p{font-size:14px;color:var(--c-text-l);line-height:1.7}

/* ===== Products Preview ===== */
.products-preview{background:var(--c-bg-alt)}
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.product-card{background:var(--c-card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.product-card-img{height:200px;display:flex;align-items:center;justify-content:center;font-size:72px;position:relative;overflow:hidden}
.product-card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.1) 100%)}
.product-card-body{padding:24px}
.product-card-body .cat-tag{display:inline-block;font-size:12px;color:var(--c-accent);background:rgba(201,169,97,.1);padding:3px 12px;border-radius:20px;margin-bottom:10px;font-weight:600}
.product-card-body h3{font-family:var(--font-h);font-size:20px;color:var(--c-dark);margin-bottom:8px;font-weight:600}
.product-card-body p{font-size:14px;color:var(--c-text-l);line-height:1.7;margin-bottom:16px}
.product-card-body .more{font-size:14px;color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:var(--transition)}
.product-card-body .more:hover{gap:10px}

/* ===== About Preview ===== */
.about-preview{background:var(--c-bg)}
.about-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-text .tag{display:inline-block;font-size:14px;color:var(--c-accent);letter-spacing:2px;font-weight:600;margin-bottom:12px}
.about-text h2{font-family:var(--font-h);font-size:36px;color:var(--c-dark);font-weight:700;line-height:1.3;margin-bottom:24px}
.about-text p{font-size:16px;color:var(--c-text-l);line-height:1.9;margin-bottom:24px}
.about-text .btn{margin-top:8px}
.about-visual{position:relative}
.about-img-card{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);height:400px;position:relative}
.about-img-card .img-gradient{position:absolute;inset:0;background:linear-gradient(135deg,#9B2D20 0%,#C9A961 100%)}
.about-img-card .img-content{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--c-white);text-align:center;padding:40px}
.about-img-card .img-content .emoji{font-size:64px;margin-bottom:16px}
.about-img-card .img-content h3{font-family:var(--font-h);font-size:24px;margin-bottom:8px}
.about-img-card .img-content p{font-size:14px;opacity:.85}
.about-badge{position:absolute;bottom:-24px;left:-24px;background:var(--c-card);padding:24px 32px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);text-align:center}
.about-badge .num{font-family:var(--font-h);font-size:42px;color:var(--c-primary);font-weight:700;line-height:1}
.about-badge .label{font-size:13px;color:var(--c-text-l);margin-top:4px}

/* ===== Stats ===== */
.stats{background:var(--c-primary);color:var(--c-white);padding:70px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item .num{font-family:var(--font-h);font-size:48px;font-weight:700;color:var(--c-accent-l);line-height:1}
.stat-item .label{font-size:15px;color:rgba(255,255,255,.8);margin-top:8px}

/* ===== CTA Section ===== */
.cta-section{background:var(--c-bg-alt);text-align:center;padding:80px 0}
.cta-box{max-width:640px;margin:0 auto}
.cta-box h2{font-family:var(--font-h);font-size:34px;color:var(--c-dark);margin-bottom:16px;font-weight:700}
.cta-box p{font-size:16px;color:var(--c-text-l);margin-bottom:32px}

/* ===== Footer ===== */
.footer{background:var(--c-dark);color:rgba(255,255,255,.7);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;margin-bottom:40px}
.footer-col h4{font-family:var(--font-h);color:var(--c-white);font-size:18px;margin-bottom:20px;font-weight:600}
.footer-col p{font-size:14px;line-height:1.8;margin-bottom:12px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;transition:var(--transition)}
.footer-col ul li a:hover{color:var(--c-accent);padding-left:4px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:14px}
.footer-contact li .ic{flex-shrink:0;margin-top:2px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo .logo-icon{width:36px;height:36px;background:var(--c-accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px}
.footer-logo span{font-family:var(--font-h);font-size:20px;color:var(--c-white);font-weight:700}
.footer-social{display:flex;gap:12px;margin-top:16px}
.footer-social a{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;font-size:18px;transition:var(--transition)}
.footer-social a:hover{background:var(--c-accent);color:var(--c-dark);transform:translateY(-3px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px}
.footer-bottom a{color:var(--c-accent-l)}

/* ===== Page Header (inner pages) ===== */
.page-header{background:linear-gradient(135deg,#9B2D20 0%,#6B1F16 100%);padding:140px 0 70px;text-align:center;color:var(--c-white);position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.4) 2px,transparent 2px),
                   radial-gradient(circle at 75% 75%,rgba(255,255,255,.4) 2px,transparent 2px);
  background-size:60px 60px}
.page-header h1{font-family:var(--font-h);font-size:42px;font-weight:700;letter-spacing:3px;position:relative;z-index:1}
.page-header .breadcrumb{font-size:14px;color:rgba(255,255,255,.6);margin-top:12px;position:relative;z-index:1}
.page-header .breadcrumb a{color:rgba(255,255,255,.6);transition:var(--transition)}
.page-header .breadcrumb a:hover{color:var(--c-accent-l)}
.page-header .breadcrumb span{margin:0 8px}

/* ===== About Page ===== */
.about-story{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-story-text .tag,.about-values .tag{display:inline-block;font-size:14px;color:var(--c-accent);letter-spacing:2px;font-weight:600;margin-bottom:12px}
.about-story-text h2,.about-values h2{font-family:var(--font-h);font-size:32px;color:var(--c-dark);margin-bottom:24px;font-weight:700}
.about-story-text p{font-size:16px;color:var(--c-text-l);line-height:1.9;margin-bottom:16px}
.about-story-visual{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);height:420px;position:relative;
  background:linear-gradient(135deg,#9B2D20 0%,#C9A961 100%)}
.about-story-visual .visual-content{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--c-white);text-align:center;padding:40px}
.about-story-visual .visual-content .emoji{font-size:72px;margin-bottom:16px}
.about-story-visual .visual-content h3{font-family:var(--font-h);font-size:24px;margin-bottom:8px}
.about-story-visual .visual-content p{font-size:14px;opacity:.85}

/* Timeline */
.timeline{position:relative;padding:20px 0}
.timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--c-border);transform:translateX(-50%)}
.timeline-item{display:grid;grid-template-columns:1fr 60px 1fr;gap:0;margin-bottom:40px;align-items:center}
.timeline-item:nth-child(even) .timeline-content{text-align:left;grid-column:3}
.timeline-item:nth-child(even) .timeline-empty{grid-column:1}
.timeline-item:nth-child(odd) .timeline-content{text-align:right;grid-column:1}
.timeline-item:nth-child(odd) .timeline-empty{grid-column:3}
.timeline-dot{grid-column:2;width:16px;height:16px;background:var(--c-accent);border:3px solid var(--c-bg);border-radius:50%;margin:0 auto;box-shadow:0 0 0 4px var(--c-accent-l);z-index:1}
.timeline-content{padding:20px}
.timeline-content .year{font-family:var(--font-h);font-size:24px;color:var(--c-primary);font-weight:700;margin-bottom:4px}
.timeline-content h4{font-size:16px;color:var(--c-dark);margin-bottom:6px;font-weight:600}
.timeline-content p{font-size:14px;color:var(--c-text-l);line-height:1.7}

/* Values */
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.value-card{text-align:center;padding:40px 28px;background:var(--c-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition);border-top:3px solid transparent}
.value-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-top-color:var(--c-accent)}
.value-icon{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;background:linear-gradient(135deg,var(--c-bg-alt),var(--c-accent-l))}
.value-card h3{font-family:var(--font-h);font-size:20px;color:var(--c-dark);margin-bottom:12px;font-weight:600}
.value-card p{font-size:14px;color:var(--c-text-l);line-height:1.7}

/* Quality */
.quality-section{background:var(--c-bg-alt)}
.quality-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.quality-item{text-align:center;padding:32px 20px}
.quality-item .q-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;background:var(--c-card);box-shadow:var(--shadow-sm)}
.quality-item h4{font-family:var(--font-h);font-size:16px;color:var(--c-dark);margin-bottom:8px;font-weight:600}
.quality-item p{font-size:13px;color:var(--c-text-l);line-height:1.6}

/* ===== Products Page ===== */
.products-filter{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:48px}
.filter-btn{padding:8px 24px;font-size:14px;font-weight:500;border:1px solid var(--c-border);border-radius:50px;cursor:pointer;transition:var(--transition);background:var(--c-card);color:var(--c-text-l);font-family:var(--font-b)}
.filter-btn:hover{border-color:var(--c-accent);color:var(--c-primary)}
.filter-btn.active{background:var(--c-primary);color:var(--c-white);border-color:var(--c-primary)}
.products-full-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.product-full-card{background:var(--c-card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer}
.product-full-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.product-full-img{height:180px;display:flex;align-items:center;justify-content:center;font-size:64px;position:relative;overflow:hidden}
.product-full-img .badge{position:absolute;top:12px;right:12px;background:rgba(255,255,255,.9);padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;color:var(--c-primary)}
.product-full-body{padding:20px}
.product-full-body h3{font-family:var(--font-h);font-size:18px;color:var(--c-dark);margin-bottom:8px;font-weight:600}
.product-full-body p{font-size:13px;color:var(--c-text-l);line-height:1.6;margin-bottom:12px}
.product-features{display:flex;flex-wrap:wrap;gap:6px}
.product-features span{font-size:11px;padding:2px 8px;background:var(--c-bg-alt);border-radius:10px;color:var(--c-text-l)}

/* ===== Contact Page ===== */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px}
.contact-form{background:var(--c-card);padding:40px;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.contact-form h3{font-family:var(--font-h);font-size:24px;color:var(--c-dark);margin-bottom:24px;font-weight:600}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;color:var(--c-text);margin-bottom:8px;font-weight:500}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;font-size:14px;border:1px solid var(--c-border);border-radius:var(--radius);font-family:var(--font-b);transition:var(--transition);background:var(--c-bg)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(201,169,97,.15)}
.form-group textarea{resize:vertical;min-height:120px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-msg{padding:12px 16px;border-radius:var(--radius);font-size:14px;margin-bottom:16px;display:none}
.form-msg.success{display:block;background:#e8f5e9;color:#2e7d32;border:1px solid #a5d6a7}
.form-msg.error{display:block;background:#fbe9e7;color:#c62828;border:1px solid #ffab91}

.contact-info-list{display:flex;flex-direction:column;gap:20px}
.contact-info-card{background:var(--c-card);padding:28px;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);display:flex;align-items:flex-start;gap:16px;transition:var(--transition)}
.contact-info-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.contact-info-card .ci-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--c-bg-alt),var(--c-accent-l));display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.contact-info-card .ci-text h4{font-family:var(--font-h);font-size:16px;color:var(--c-dark);margin-bottom:4px;font-weight:600}
.contact-info-card .ci-text p{font-size:14px;color:var(--c-text-l);line-height:1.6}
.contact-info-card .ci-text a{color:var(--c-text-l);transition:var(--transition)}
.contact-info-card .ci-text a:hover{color:var(--c-primary)}

.contact-map{margin-top:48px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);height:360px;background:linear-gradient(135deg,var(--c-bg-alt),var(--c-accent-l));display:flex;align-items:center;justify-content:center;flex-direction:column;color:var(--c-text-l)}
.contact-map .map-emoji{font-size:64px;margin-bottom:12px}
.contact-map p{font-size:15px}

/* ===== Animations ===== */
.fade-up{opacity:0;transform:translateY(40px);transition:opacity .7s ease,transform .7s ease}
.fade-up.in{opacity:1;transform:translateY(0)}
.fade-up.d1{transition-delay:.1s}
.fade-up.d2{transition-delay:.2s}
.fade-up.d3{transition-delay:.3s}
.fade-up.d4{transition-delay:.4s}

/* ===== Responsive ===== */
@media(max-width:992px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .products-grid,.products-full-grid{grid-template-columns:repeat(2,1fr)}
  .about-inner,.about-story,.contact-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .values-grid{grid-template-columns:1fr}
  .quality-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-visual{margin-top:40px}
  .about-story-visual{height:320px}
  .timeline::before{left:0}
  .timeline-item{grid-template-columns:40px 1fr;gap:0}
  .timeline-item:nth-child(even) .timeline-content,
  .timeline-item:nth-child(odd) .timeline-content{grid-column:2;text-align:left}
  .timeline-empty{display:none}
  .timeline-dot{grid-column:1}
}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--c-white);flex-direction:column;padding:20px;gap:0;box-shadow:var(--shadow-md)}
  .nav-links.open{display:flex}
  .nav-links a{color:var(--c-text);padding:14px 0;border-bottom:1px solid var(--c-border);width:100%}
  .nav-links a::after{display:none}
  .nav-toggle{display:flex}
  .nav-cta .btn{display:none}
  .hero h1{font-size:36px;letter-spacing:2px}
  .hero .subtitle{font-size:16px}
  .section{padding:60px 0}
  .section-head h2{font-size:28px}
  .features-grid,.products-grid,.products-full-grid,.stats-grid,.quality-grid,.footer-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .hero-btns{flex-direction:column;align-items:center}
  .hero-btns .btn{width:100%;max-width:280px;text-align:center;justify-content:center}
  .cta-box h2{font-size:26px}
  .page-header h1{font-size:30px}
  .about-badge{position:static;margin-top:-20px;display:inline-block}
}
@media(max-width:480px){
  .hero h1{font-size:28px}
  .section-head h2{font-size:24px}
  .stat-item .num{font-size:36px}
  .contact-form{padding:28px 20px}
}