/* ============================================================
   Yongyi Blow Molding — Apple-Style Design System
   ============================================================ */

/* --- Design Tokens --- */
:root {
  /* Primary palette */
  --c-white:       #ffffff;
  --c-bg-light:    #f5f5f7;
  --c-text:        #1d1d1f;
  --c-text-secondary: #86868b;
  --c-text-tertiary:  #6e6e73;

  /* Accent */
  --c-accent:      #0071e3;
  --c-accent-hover:#0077ed;

  /* Borders & dividers */
  --c-border:      #d2d2d7;
  --c-border-light:#e5e5ea;

  /* Typography */
  --font-stack: system-ui, -apple-system, 'SF Pro Display',
                'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;

  /* Spacing */
  --section-py:    120px;
  --content-max:   1200px;
  --content-narrow:980px;
  --content-px:    32px;

  /* Border Radius */
  --radius-sm:     12px;
  --radius-md:     18px;
  --radius-lg:     24px;
  --radius-btn:    980px;

  /* Shadows */
  --shadow-card:   0 1px 3px rgba(0,0,0,.08);
  --shadow-hover:  0 4px 12px rgba(0,0,0,.12);
  --shadow-modal:  0 8px 32px rgba(0,0,0,.16);

  /* Transitions */
  --ease-apple:    cubic-bezier(.25,.1,.25,1);
}

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-stack);
  background:var(--c-white);
  color:var(--c-text);
  line-height:1.533;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img{display:block;max-width:100%;height:auto}
a{color:var(--c-accent);text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:6px}

::selection{background:var(--c-accent);color:#fff}

/* Container */
.container{max-width:var(--content-max);margin:0 auto;padding:0 var(--content-px)}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav{
  position:sticky;top:0;z-index:1000;
  background:rgba(44,44,46,.92);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(255,255,255,.08);
  height:44px;display:flex;align-items:center;
}
.nav-inner{
  max-width:var(--content-max);width:100%;margin:0 auto;
  padding:0 var(--content-px);
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{display:flex;align-items:center;text-decoration:none}
.nav-logo-img{height:36px;width:auto;display:block}
.nav-right{display:flex;align-items:center;gap:28px}
.nav-links{display:flex;gap:28px;list-style:none;align-items:center}
.nav-links a{
  color:rgba(255,255,255,.72);text-decoration:none;
  font-size:.75rem;font-weight:400;letter-spacing:-.01em;
  transition:color .2s var(--ease-apple);white-space:nowrap;
}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:#fff}

/* Nav CTA */
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 18px;border-radius:var(--radius-btn);
  background:#fff;color:#1d1d1f;
  text-decoration:none;font-size:.75rem;font-weight:500;
  letter-spacing:-.01em;cursor:pointer;border:none;
  transition:all .2s var(--ease-apple);white-space:nowrap;
}
.nav-cta:hover{background:#e8e8ed;transform:translateY(-1px)}

/* Language Switcher */
.lang-switcher{display:flex;gap:4px;align-items:center}
.lang-switcher button{
  background:none;border:none;color:rgba(255,255,255,.6);
  font-size:.7rem;font-weight:500;cursor:pointer;
  padding:3px 6px;transition:color .2s;
  font-family:var(--font-stack);
}
.lang-switcher button:hover{color:#fff}
.lang-switcher button.active{color:#fff}

/* Hamburger */
.hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;
  width:36px;height:36px;gap:5px;cursor:pointer;z-index:1100;
  background:none;border:none;padding:0}
.hamburger span{display:block;width:20px;height:1.5px;background:#fff;
  border-radius:1px;transition:all .35s var(--ease-apple);transform-origin:center}
.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile Menu */
.mobile-menu-overlay{display:none;position:fixed;inset:0;z-index:1050;
  background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:opacity .35s}
.mobile-menu-overlay.open{opacity:1;pointer-events:auto}
.mobile-menu-panel{position:fixed;top:0;right:-300px;width:280px;height:100vh;z-index:1060;
  background:#2c2c2e;padding:80px 32px 32px;
  transition:right .4s var(--ease-apple);
  display:flex;flex-direction:column;gap:24px;overflow-y:auto;
  box-shadow:-2px 0 16px rgba(0,0,0,.3);
}
.mobile-menu-overlay.open .mobile-menu-panel{right:0}
.mobile-menu-panel .nav-links{display:flex;flex-direction:column;gap:8px;list-style:none;padding:0;margin:0}
.mobile-menu-panel .nav-links a{display:block;color:rgba(255,255,255,.8);text-decoration:none;
  font-size:1.1rem;font-weight:500;letter-spacing:-.01em;padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,.1);transition:color .2s}
.mobile-menu-panel .nav-links a:hover,.mobile-menu-panel .nav-links a.active{color:#fff}
.mobile-menu-panel .nav-cta{display:block;width:100%;text-align:center;padding:12px 20px;
  font-size:.85rem;border-radius:var(--radius-btn);margin-bottom:8px}
.mobile-menu-panel .lang-switcher{justify-content:center}

/* ============================================================
   HERO
   ============================================================ */
.hero{display:flex;align-items:center;justify-content:center;text-align:center;
  padding:120px var(--content-px) 80px;min-height:70vh}
.hero-inner{max-width:var(--content-narrow);width:100%}
.hero-badge{display:inline-block;font-size:.75rem;font-weight:500;
  color:var(--c-accent);margin-bottom:24px;letter-spacing:-.01em}
.hero h1{font-size:clamp(2.5rem,5vw,4rem);font-weight:600;
  letter-spacing:-.03em;line-height:1.1;color:var(--c-text);margin-bottom:24px}
.hero .subtitle{font-size:1.15rem;color:var(--c-text-secondary);
  max-width:600px;margin:0 auto 36px;line-height:1.533}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Hero with Image */
.hero-image-section{padding:60px var(--content-px) 0;text-align:center}
.hero-image-section .hero-img-wrap{max-width:var(--content-max);margin:0 auto 48px;
  border-radius:var(--radius-md);overflow:hidden}
.hero-image-section .hero-img-wrap img{width:100%;display:block}
.hero-image-section h1{font-size:clamp(2rem,4vw,3rem);font-weight:600;
  letter-spacing:-.03em;margin-bottom:16px}
.hero-image-section .subtitle{font-size:1.15rem;color:var(--c-text-secondary);
  max-width:600px;margin:0 auto 32px}

/* Buttons */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  background:var(--c-accent);color:#fff;
  font-size:.9rem;font-weight:500;letter-spacing:-.01em;
  font-family:var(--font-stack);cursor:pointer;border:none;
  transition:all .2s var(--ease-apple);white-space:nowrap;
}
.btn-primary:hover{background:var(--c-accent-hover);transform:translateY(-1px)}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  background:transparent;color:var(--c-accent);
  font-size:.9rem;font-weight:500;letter-spacing:-.01em;
  font-family:var(--font-stack);cursor:pointer;
  border:1px solid var(--c-accent);
  transition:all .2s var(--ease-apple);white-space:nowrap;
}
.btn-outline:hover{background:var(--c-accent);color:#fff}
.btn-dark{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  background:var(--c-text);color:#fff;
  font-size:.9rem;font-weight:500;letter-spacing:-.01em;
  font-family:var(--font-stack);cursor:pointer;border:none;
  transition:all .2s var(--ease-apple);white-space:nowrap;
}
.btn-dark:hover{background:#333;transform:translateY(-1px)}

/* ============================================================
   SECTIONS — Common
   ============================================================ */
.section{padding:var(--section-py) var(--content-px);background:linear-gradient(180deg, var(--c-bg-light) 0%, var(--c-white) 80px)}
.section-light{background:linear-gradient(180deg, var(--c-white) 0%, var(--c-bg-light) 80px)}
.section-label{display:block;font-size:.75rem;font-weight:500;
  color:var(--c-accent);text-transform:uppercase;letter-spacing:.02em;margin-bottom:16px}
.section-title{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:600;
  letter-spacing:-.02em;color:var(--c-text);margin-bottom:16px}
.section-desc{font-size:1.05rem;color:var(--c-text-secondary);
  max-width:640px;line-height:1.533;margin-bottom:0}

/* ============================================================
   PRODUCT / MACHINE ROWS
   ============================================================ */
.product-row,.machine-row{
  display:flex;align-items:center;gap:80px;
  max-width:var(--content-max);margin:0 auto;
}
.product-row.reverse,.machine-row.reverse{flex-direction:row-reverse}
.product-row .visual,.machine-row .visual{flex:0 0 50%;min-width:0}
.product-row .visual .img-wrap,.machine-row .visual .img-wrap{
  border-radius:var(--radius-md);overflow:hidden;
  transition:transform .4s var(--ease-apple),box-shadow .4s var(--ease-apple);
}
.product-row .visual .img-wrap:hover,.machine-row .visual .img-wrap:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);
}
.product-row .visual img,.machine-row .visual img{width:100%;display:block}
.product-row .info,.machine-row .info{flex:1;min-width:0}
.product-row .info h3,.machine-row .info h3{
  font-size:clamp(1.5rem,2.5vw,2rem);font-weight:600;
  letter-spacing:-.02em;margin-bottom:12px
}

/* Spec Grid */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}
.spec-item{background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-sm);padding:16px 20px;transition:all .2s var(--ease-apple)}
.spec-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}
.spec-label{font-size:.7rem;font-weight:500;color:var(--c-text-tertiary);
  text-transform:uppercase;letter-spacing:.03em;margin-bottom:4px}
.spec-value{font-size:1rem;font-weight:600;color:var(--c-text)}

/* Tags */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 24px}
.tag{display:inline-block;padding:6px 14px;border-radius:var(--radius-sm);
  background:var(--c-bg-light);color:var(--c-text-secondary);
  font-size:.75rem;font-weight:400;letter-spacing:-.01em;
  transition:all .2s var(--ease-apple)}
.tag:hover{color:var(--c-text);background:#e8e8ed}

/* Badge overlay on images */
.badge-overlay{display:inline-block;padding:6px 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.9);color:var(--c-text);
  font-size:.75rem;font-weight:500;position:absolute;top:16px;left:16px;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}

/* ============================================================
   GRID CATALOG
   ============================================================ */
.grid-catalog{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  max-width:var(--content-max);margin:0 auto}
.grid-card{background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-md);overflow:hidden;
  transition:all .4s var(--ease-apple);cursor:pointer}
.grid-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.grid-card img{width:100%;height:200px;object-fit:cover;display:block}
.grid-card-body{padding:20px 24px}
.grid-card-body h4{font-size:1.1rem;font-weight:600;margin-bottom:6px;letter-spacing:-.01em}
.grid-card-body p{font-size:.85rem;color:var(--c-text-secondary);line-height:1.533}

/* ============================================================
   CAPABILITY / QUALITY CARDS
   ============================================================ */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  max-width:var(--content-max);margin:0 auto}
.cap-card{background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-md);padding:28px 24px;text-align:center;
  transition:all .4s var(--ease-apple)}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cap-card .cap-icon{font-size:2rem;margin-bottom:16px;display:block}
.cap-card h4{font-size:1rem;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.cap-card p{font-size:.85rem;color:var(--c-text-secondary);line-height:1.533}

.quality-row{display:flex;gap:20px;max-width:var(--content-max);margin:0 auto}
.q-card{flex:1;background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-md);padding:28px 24px;
  transition:all .4s var(--ease-apple)}
.q-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.q-card h4{font-size:1rem;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.q-card p{font-size:.85rem;color:var(--c-text-secondary);line-height:1.533}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-section{background:linear-gradient(180deg, var(--c-white) 0%, var(--c-bg-light) 80px);padding:80px var(--content-px)}
.stats-row{display:flex;justify-content:space-around;align-items:center;
  max-width:var(--content-max);margin:0 auto;flex-wrap:wrap;gap:48px}
.stat-item{text-align:center}
.stat-number{font-size:clamp(2rem,4vw,3.5rem);font-weight:600;
  color:var(--c-text);letter-spacing:-.03em;line-height:1.1}
.stat-label{font-size:.85rem;color:var(--c-text-secondary);
  margin-top:8px;font-weight:400}

/* ============================================================
   TEAM CARDS
   ============================================================ */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;
  max-width:var(--content-max);margin:0 auto}
.team-card{background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-md);overflow:hidden;
  transition:all .4s var(--ease-apple)}
.team-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.team-card img{width:100%;height:320px;object-fit:cover;display:block}
.team-card-body{padding:24px 28px 28px}
.team-role{display:inline-block;padding:4px 12px;border-radius:var(--radius-sm);
  background:#f0f7ff;color:var(--c-accent);font-size:.85rem;font-weight:500;
  margin-bottom:12px}
.team-card-body h3{font-size:1.3rem;font-weight:600;margin-bottom:4px;letter-spacing:-.01em}
.team-card-body .team-sub{font-size:.85rem;color:var(--c-text-secondary);margin-bottom:12px}
.team-card-body .team-desc{font-size:.85rem;color:var(--c-text-tertiary);
  line-height:1.533;margin-bottom:16px}
.team-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}
.team-tags .tag{font-size:.7rem}
.team-contact{font-size:.85rem;color:var(--c-accent);font-weight:500;
  display:inline-flex;align-items:center;gap:4px;transition:gap .2s}
.team-contact:hover{gap:8px}

/* ============================================================
   MISSION BANNER
   ============================================================ */
.mission-section{background:linear-gradient(180deg, var(--c-white) 0%, var(--c-bg-light) 80px);padding:100px var(--content-px);text-align:center}
.mission-quote{max-width:var(--content-narrow);margin:0 auto}
.mission-quote .quote-mark{font-size:4rem;color:var(--c-border);line-height:1;display:block;margin-bottom:24px}
.mission-quote blockquote{font-size:clamp(1.3rem,2.5vw,1.75rem);font-weight:500;
  color:var(--c-text);letter-spacing:-.01em;line-height:1.4;margin-bottom:20px}
.mission-quote .quote-author{font-size:.9rem;color:var(--c-text-secondary)}

/* ============================================================
   CLIENTS SECTION
   ============================================================ */
.clients-section{padding:var(--section-py) var(--content-px);text-align:center;background:linear-gradient(180deg, var(--c-white) 0%, var(--c-bg-light) 80px)}
.clients-label{font-size:.75rem;font-weight:500;color:var(--c-text-tertiary);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:32px}
.clients-grid{display:flex;justify-content:center;align-items:center;gap:48px;
  max-width:var(--content-max);margin:0 auto;flex-wrap:wrap}
.client-card{display:flex;align-items:center;justify-content:center;
  width:180px;height:80px;padding:16px;border-radius:var(--radius-sm);
  border:1px solid var(--c-border-light);transition:all .4s var(--ease-apple)}
.client-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.client-card img{max-width:100%;max-height:100%;object-fit:contain;
  filter:grayscale(100%);opacity:.5;transition:all .4s var(--ease-apple)}
.client-card:hover img{filter:grayscale(0%);opacity:1}

/* ============================================================
   FACTORY DESCRIPTION CARD
   ============================================================ */
.desc-card{background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-md);padding:48px;max-width:var(--content-max);margin:0 auto}
.desc-card h2{font-size:clamp(1.5rem,2.5vw,2rem);font-weight:600;
  letter-spacing:-.02em;margin-bottom:8px}
.desc-card .desc-sub{color:var(--c-accent);font-size:.9rem;font-weight:500;margin-bottom:24px}
.desc-card p{color:var(--c-text-secondary);font-size:.95rem;line-height:1.6;margin-bottom:16px}
.highlights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:32px 0}
.highlight-item{text-align:center;padding:20px;border-radius:var(--radius-sm);
  background:var(--c-bg-light)}
.highlight-item .hl-num{font-size:1.6rem;font-weight:600;color:var(--c-text);letter-spacing:-.02em}
.highlight-item .hl-label{font-size:.8rem;color:var(--c-text-secondary);margin-top:4px}
.motto{text-align:center;padding:24px;background:var(--c-bg-light);
  border-radius:var(--radius-sm);color:var(--c-text-secondary);
  font-size:.95rem;font-weight:500;letter-spacing:.01em;margin-top:24px}

/* ============================================================
   MAP SECTION
   ============================================================ */
.map-card{background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-md);padding:48px;text-align:center;
  max-width:var(--content-max);margin:0 auto}
.map-pin{font-size:2.5rem;margin-bottom:16px}
.map-address{font-size:1.05rem;color:var(--c-text);font-weight:500;margin-bottom:4px}
.map-name{font-size:.9rem;color:var(--c-text-secondary);margin-bottom:20px}
.map-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.map-links a{font-size:.9rem}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section{background:linear-gradient(180deg, var(--c-white) 0%, var(--c-bg-light) 80px);padding:100px var(--content-px);text-align:center}
.cta-section .section-label{margin-bottom:12px}
.cta-section h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:600;
  letter-spacing:-.02em;margin-bottom:12px}
.cta-section .subtitle{font-size:1.05rem;color:var(--c-text-secondary);
  max-width:500px;margin:0 auto 32px}
.cta-section .btn-primary{padding:16px 36px;font-size:1rem}

/* ============================================================
   INTRO SECTION
   ============================================================ */
.intro-section{text-align:center;padding:var(--section-py) var(--content-px)}
.intro-section .section-label{margin-bottom:16px}
.intro-section h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:600;
  letter-spacing:-.02em;margin-bottom:16px}
.intro-section p{font-size:1.05rem;color:var(--c-text-secondary);
  max-width:680px;margin:0 auto;line-height:1.6}

/* ============================================================
   FEATURED BANNER
   ============================================================ */
.featured-banner{max-width:var(--content-max);margin:0 auto;
  display:flex;align-items:center;gap:60px;
  background:var(--c-bg-light);border-radius:var(--radius-lg);overflow:hidden}
.featured-banner .banner-text{padding:48px;flex:1}
.featured-banner .banner-text .section-label{margin-bottom:12px}
.featured-banner .banner-text h3{font-size:clamp(1.3rem,2vw,1.75rem);
  font-weight:600;margin-bottom:12px;letter-spacing:-.02em}
.featured-banner .banner-text p{font-size:.95rem;color:var(--c-text-secondary);
  line-height:1.6;margin-bottom:20px}
.featured-banner .banner-img{flex:0 0 48%;min-width:0}
.featured-banner .banner-img img{width:100%;height:320px;object-fit:cover;display:block}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:linear-gradient(180deg, var(--c-white) 0%, var(--c-bg-light) 80px);border-top:1px solid var(--c-border-light);
  padding:32px var(--content-px);text-align:center}
.footer-inner{max-width:var(--content-max);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-copy{font-size:.75rem;color:var(--c-text-tertiary)}
.footer-links{display:flex;gap:20px;list-style:none;flex-wrap:wrap}
.footer-links a{font-size:.75rem;color:var(--c-text-secondary);transition:color .2s}
.footer-links a:hover{color:var(--c-text)}

/* ============================================================
   QUOTE MODAL
   ============================================================ */
.modal-overlay{display:none;position:fixed;inset:0;z-index:2000;
  background:rgba(0,0,0,.5);justify-content:center;align-items:center;padding:20px}
.modal-overlay.open{display:flex}
.modal-card{background:var(--c-white);border-radius:var(--radius-md);
  box-shadow:var(--shadow-modal);padding:48px;max-width:520px;width:100%;
  position:relative;max-height:90vh;overflow-y:auto;
  animation:modalIn .4s var(--ease-apple)}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.96)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:16px;right:16px;width:32px;height:32px;
  border-radius:50%;background:var(--c-bg-light);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;color:var(--c-text-secondary);transition:all .2s}
.modal-close:hover{background:#e8e8ed;color:var(--c-text)}
.modal-card h2{font-size:1.5rem;font-weight:600;margin-bottom:6px;letter-spacing:-.02em}
.modal-card .modal-sub{font-size:.9rem;color:var(--c-text-secondary);margin-bottom:28px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.8rem;font-weight:500;
  color:var(--c-text);margin-bottom:6px}
.form-group input,.form-group textarea{
  width:100%;padding:12px 16px;border:1px solid var(--c-border);
  border-radius:var(--radius-sm);font-family:var(--font-stack);
  font-size:.9rem;color:var(--c-text);background:var(--c-white);
  transition:border-color .2s;line-height:1.5}
.form-group input:focus,.form-group textarea:focus{
  outline:none;border-color:var(--c-accent)}
.form-group textarea{min-height:100px;resize:vertical}
.form-submit{width:100%;padding:14px 28px;border-radius:var(--radius-btn);
  background:var(--c-accent);color:#fff;font-size:.95rem;font-weight:500;
  font-family:var(--font-stack);cursor:pointer;border:none;
  transition:all .2s var(--ease-apple);margin-top:8px}
.form-submit:hover{background:var(--c-accent-hover)}
.form-success{text-align:center;padding:32px 0;display:none}
.form-success .check{font-size:3rem;color:var(--c-accent);margin-bottom:16px}
.form-success h3{font-size:1.3rem;font-weight:600;margin-bottom:8px}
.form-success p{color:var(--c-text-secondary);font-size:.9rem}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease-apple),transform .8s var(--ease-apple)}
.reveal.visible{opacity:1;transform:none}
.reveal-img{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease-apple),transform .8s var(--ease-apple)}
.reveal-img.visible{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  .reveal,.reveal-img{opacity:1;transform:none;transition:none}
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1024px){
  :root{--section-py:80px}
  .product-row,.machine-row{gap:48px}
  .featured-banner{flex-direction:column;gap:0}
  .featured-banner .banner-text{padding:32px}
  .featured-banner .banner-img{flex:auto}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .grid-catalog{grid-template-columns:repeat(2,1fr)}
  .highlights-grid{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:768px){
  :root{--section-py:64px}
  .nav-right{display:none}.hamburger{display:flex}.mobile-menu-overlay{display:block}
  .hero{padding:80px var(--content-px) 48px;min-height:auto}
  .hero-image-section{padding:64px var(--content-px) 0}
  .product-row,.machine-row{flex-direction:column!important;gap:32px}
  .product-row .visual,.machine-row .visual{flex:auto;width:100%}
  .grid-catalog{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr}
  .quality-row{flex-direction:column}
  .team-grid{grid-template-columns:1fr;max-width:400px}
  .clients-grid{gap:24px}
  .client-card{width:140px;height:64px}
  .highlights-grid{grid-template-columns:1fr}
  .stats-row{gap:32px}
  .desc-card{padding:28px}
  .modal-card{padding:32px}
  .footer-inner{flex-direction:column;text-align:center}
  .spec-grid{grid-template-columns:1fr}
}

@media(max-width:480px){
  :root{--content-px:20px}
  .hero-buttons{flex-direction:column;align-items:center}
  .hero-buttons .btn-primary,.hero-buttons .btn-outline,.hero-buttons .btn-dark{width:100%;justify-content:center}
}

/* ============================================================
   AMAZON-STYLE PRODUCT GRID
   ============================================================ */
.category-filters{
  display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:48px;
}
.cat-btn{
  padding:8px 22px;border-radius:20px;border:1px solid var(--c-border);
  background:var(--c-white);color:var(--c-text);font-size:.85rem;
  cursor:pointer;transition:all .2s;font-family:var(--font-stack);
}
.cat-btn:hover,.cat-btn.active{background:var(--c-text);color:#fff;border-color:var(--c-text)}

.product-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  max-width:var(--content-max);margin:0 auto;
}
.product-card{
  background:var(--c-white);border:1px solid var(--c-border-light);
  border-radius:var(--radius-sm);overflow:hidden;
  transition:all .3s var(--ease-apple);position:relative;
}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}

.product-card .img-wrap{
  position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--c-bg-light);
  margin:16px 16px 0;border-radius:8px;
}
.product-card{border-radius:var(--radius-sm)}
.product-card:hover .img-wrap img{transform:scale(1.04)}
.product-card .img-wrap img{transition:transform .4s var(--ease-apple)}
.product-card .img-wrap img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}

.product-card .badge{
  position:absolute;top:12px;left:12px;padding:4px 10px;border-radius:4px;
  font-size:.7rem;font-weight:600;z-index:2;
}
.badge-hot{background:#e74c3c;color:#fff}
.badge-new{background:var(--c-accent);color:#fff}
.badge-best{background:#f39c12;color:#fff}

.product-card .card-body{padding:16px}
.product-card .card-body h3{
  font-size:.95rem;font-weight:600;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.product-card .card-body .card-specs{
  font-size:.78rem;color:var(--c-text-secondary);margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.product-card .card-body .card-btn{
  display:block;width:100%;padding:9px;border-radius:18px;
  background:var(--c-accent);color:#fff;text-align:center;
  font-size:.82rem;font-weight:500;border:none;cursor:pointer;
  transition:background .2s;font-family:var(--font-stack);
}
.product-card .card-body .card-btn:hover{background:var(--c-accent-hover)}

@media(max-width:1024px){.product-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:768px){.product-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.product-grid{grid-template-columns:1fr}}

/* ============================================================
   FACTORY CAROUSEL
   ============================================================ */
.factory-carousel{
  position:relative;max-width:860px;margin:0 auto 48px;
  border-radius:var(--radius-md);overflow:hidden;
  background:var(--c-bg-light);
}
.factory-carousel .carousel-track{
  position:relative;aspect-ratio:16/9;overflow:hidden;
}
.factory-carousel .carousel-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .6s var(--ease-apple);
}
.factory-carousel .carousel-slide.active{opacity:1;position:relative}
.factory-carousel .carousel-slide img{
  width:100%;height:100%;object-fit:cover;display:block;
}

/* Arrows */
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.85);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;color:var(--c-text);transition:all .2s;
  box-shadow:0 1px 4px rgba(0,0,0,.1);
}
.carousel-arrow:hover{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.carousel-arrow.prev{left:16px}
.carousel-arrow.next{right:16px}

/* Dots */
.carousel-dots{
  display:flex;gap:8px;justify-content:center;padding:16px 0;
}
.carousel-dots button{
  width:8px;height:8px;border-radius:50%;border:none;cursor:pointer;
  background:var(--c-border);transition:all .3s;padding:0;
}
.carousel-dots button.active{background:var(--c-text);width:24px;border-radius:4px}

@media(max-width:768px){
  .carousel-arrow{width:32px;height:32px;font-size:1rem}
  .carousel-arrow.prev{left:8px}
  .carousel-arrow.next{right:8px}
}

/* ============================================================
   HORIZON GLOW HERO EFFECT
   ============================================================ */
.hero-glow{position:relative}
.hero-glow::before{
  content:'';position:absolute;inset:0;pointer-events:none;z-index:1;
  background:
    radial-gradient(ellipse 70% 35% at 50% 45%, rgba(0,113,227,.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 30% at 35% 50%, rgba(80,140,230,.10) 0%, transparent 55%),
    radial-gradient(ellipse 50% 25% at 65% 42%, rgba(140,180,240,.08) 0%, transparent 50%),
    radial-gradient(ellipse 80% 15% at 50% 90%, rgba(0,113,227,.04) 0%, transparent 60%);
}
.hero-glow::after{
  content:'';position:absolute;top:43%;left:50%;transform:translateX(-50%);pointer-events:none;z-index:1;
  width:70%;height:2px;
  background:linear-gradient(90deg, transparent 5%, rgba(0,113,227,.12) 15%, rgba(0,113,227,.5) 50%, rgba(0,113,227,.12) 85%, transparent 95%);
  border-radius:1px;
}
.hero-glow>*{position:relative;z-index:2}

/* Hardware — glow slightly higher */
.hero-glow-up::before{
  background:
    radial-gradient(ellipse 70% 35% at 50% 38%, rgba(0,113,227,.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 30% at 35% 43%, rgba(80,140,230,.10) 0%, transparent 55%),
    radial-gradient(ellipse 50% 25% at 65% 36%, rgba(140,180,240,.08) 0%, transparent 50%),
    radial-gradient(ellipse 80% 15% at 50% 85%, rgba(0,113,227,.04) 0%, transparent 60%);
}
.hero-glow-up::after{top:37%}

/* About Us page — glow lower to match text below carousel */
.hero-image-section.hero-glow::before{
  background:
    radial-gradient(ellipse 70% 30% at 50% 78%, rgba(0,113,227,.22) 0%, transparent 55%),
    radial-gradient(ellipse 60% 25% at 35% 80%, rgba(80,140,230,.12) 0%, transparent 50%),
    radial-gradient(ellipse 50% 20% at 65% 76%, rgba(140,180,240,.10) 0%, transparent 48%);
}
.hero-image-section.hero-glow::after{
  top:74%;width:65%;
  background:linear-gradient(90deg, transparent 5%, rgba(0,113,227,.15) 15%, rgba(0,113,227,.55) 50%, rgba(0,113,227,.15) 85%, transparent 95%);
}

/* Contact page — anchor the horizon line between the badge and the title
   (relative to the centered inner content, so it doesn't drift with viewport height) */
.hero-contact.hero-glow::after{display:none}
.hero-contact .hero-inner{position:relative}
.hero-contact .hero-inner::before{
  content:'';position:absolute;top:30px;left:50%;transform:translateX(-50%);
  width:70%;height:2px;border-radius:1px;
  background:linear-gradient(90deg, transparent 5%, rgba(0,113,227,.12) 15%, rgba(0,113,227,.5) 50%, rgba(0,113,227,.12) 85%, transparent 95%);
}


@media(prefers-reduced-motion:reduce){
  .hero-glow::before,.hero-glow::after{display:none}
}

/* --- Breadcrumb Navigation --- */
.breadcrumb-nav {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 16px var(--content-px) 0;
}
.breadcrumb-nav ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--c-text-secondary);
}
.breadcrumb-nav a {
  color: var(--c-accent);
  text-decoration: none;
}
.breadcrumb-nav a:hover { text-decoration: underline; }
.breadcrumb-nav [aria-current="page"] { color: var(--c-text); font-weight: 500; }
.breadcrumb-nav li:not(:last-child)::after {
  content: '›';
  margin-left: 8px;
  color: var(--c-text-tertiary);
}

/* --- FAQ --- */
.faq-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--c-border-light);
}
.faq-item:first-child { padding-top: 0; }
.faq-q {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 8px;
}
.faq-a {
  font-size: 16px;
  color: var(--c-text-tertiary);
  line-height: 1.7;
}

/* --- Product Detail --- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.product-detail h2 {
  font-size: 28px;
  margin-bottom: 16px;
}
.product-detail h3 {
  font-size: 18px;
  margin-top: 24px;
  margin-bottom: 8px;
}
.product-detail p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-tertiary);
  margin-bottom: 12px;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}
.spec-table th, .spec-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--c-border-light);
  font-size: 15px;
}
.spec-table th {
  color: var(--c-text-secondary);
  font-weight: 500;
  width: 120px;
  white-space: nowrap;
}
.spec-table td { color: var(--c-text); }

/* --- Contact Page --- */
@media (max-width: 768px) {
  .contact-layout { grid-template-columns: 1fr !important; }
  .product-detail { grid-template-columns: 1fr !important; }
}

/* ============================================================
   AURORA BACKGROUND — 漂浮极光 + 鼠标互动光效
   JS 在 body 最前插入 .aurora-bg > i*3；仅改这两个共享文件即全站生效
   ============================================================ */
.aurora-bg{
  position:fixed;inset:0;z-index:-1;
  overflow:hidden;pointer-events:none;
}
.aurora-bg i{
  position:absolute;
  width:55vmax;height:55vmax;border-radius:50%;
  filter:blur(60px);
  opacity:.32;
  will-change:transform,translate;
  /* 鼠标惯性跟随：translate 属性与 animation 的 transform 叠加，互不冲突 */
  transition:translate 1.4s cubic-bezier(.22,.61,.36,1);
}
.aurora-bg .a1{ /* 品牌蓝 */
  top:-15%;left:-10%;
  background:radial-gradient(circle at center, rgba(0,113,227,.55), rgba(0,113,227,0) 70%);
  translate:calc(var(--mx,0)*6vmax) calc(var(--my,0)*6vmax);
  animation:aurora-drift-1 18s ease-in-out infinite;
}
.aurora-bg .a2{ /* 紫 */
  top:18%;right:-18%;
  background:radial-gradient(circle at center, rgba(139,92,246,.5), rgba(139,92,246,0) 70%);
  translate:calc(var(--mx,0)*-9vmax) calc(var(--my,0)*-9vmax);
  animation:aurora-drift-2 24s ease-in-out infinite;
}
.aurora-bg .a3{ /* 粉 */
  bottom:-22%;left:12%;
  background:radial-gradient(circle at center, rgba(236,72,153,.42), rgba(236,72,153,0) 70%);
  translate:calc(var(--mx,0)*12vmax) calc(var(--my,0)*12vmax);
  animation:aurora-drift-3 30s ease-in-out infinite;
}
@keyframes aurora-drift-1{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(9vw,-7vh) scale(1.18)}
  66%{transform:translate(-7vw,9vh) scale(.94)}
}
@keyframes aurora-drift-2{
  0%,100%{transform:translate(0,0) scale(1)}
  40%{transform:translate(-10vw,8vh) scale(1.12)}
  70%{transform:translate(7vw,-9vh) scale(.92)}
}
@keyframes aurora-drift-3{
  0%,100%{transform:translate(0,0) scale(1)}
  35%{transform:translate(8vw,10vh) scale(.9)}
  75%{transform:translate(-9vw,-8vh) scale(1.16)}
}
/* 触屏设备：仅漂浮，无跟随 */
@media (hover:none){
  .aurora-bg i{transition:none;translate:none}
}
/* 减少动态偏好：静态微光 */
@media (prefers-reduced-motion: reduce){
  .aurora-bg i{animation:none;transition:none;translate:none;opacity:.18}
}