/* ================================================================
   Kaheng HK — Design System CSS v3.0
   Ref: 时创意/康盈 · Industrial Precision · 需求驱动
   ================================================================ */

/* --- CSS Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;line-height:1.6;color:var(--slate-800);background:var(--slate-50);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{cursor:pointer;border:none;font-family:inherit}

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root{
  /* --- Primary: 深海蓝 (Navy) --- */
  --navy-950:#060d15; --navy-900:#0b1622; --navy-800:#111f2f;
  --navy-700:#17293d; --navy-600:#1e354c; --navy-500:#25415d;
  --navy-400:#3d5f80; --navy-300:#5e7f9e; --navy-200:#849eb7;
  --navy-100:#b3c3d3; --navy-50:#dde6ee;

  /* --- Accent: 科技蓝 (Tech Blue, 主色 #1677FF) --- */
  --copper-700:#003eb3; --copper-600:#0958d9; --copper-500:#1677ff; --copper-400:#4096ff;
  --copper-300:#69b1ff; --copper-200:#91caff; --copper-100:#bae0ff; --copper-50:#e6f4ff;

  /* --- Neutral: 岩板灰 (Slate) --- */
  --slate-900:#1e293b; --slate-800:#334155; --slate-700:#475569;
  --slate-600:#64748b; --slate-500:#94a3b8; --slate-400:#cbd5e1;
  --slate-300:#e2e8f0; --slate-200:#f1f5f9; --slate-100:#f8fafc; --slate-50:#fcfdfd;
  --white:#ffffff;

  /* --- Semantic --- */
  --green:#10b981; --green-light:#d1fae5;
  --amber:#f59e0b; --amber-light:#fef3c7;
  --red:#ef4444; --red-light:#fee2e2;
  --blue:#3b82f6; --blue-light:#dbeafe;

  /* --- Typography --- */
  --font-display:'Satoshi',system-ui,sans-serif;
  --font-body:system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','Cascadia Code',monospace;

  --text-xs:0.75rem; --text-sm:0.875rem;
  --text-base:1rem; --text-lg:1.125rem;
  --text-xl:1.25rem; --text-2xl:1.5rem;
  --text-3xl:1.875rem; --text-4xl:2.25rem;
  --text-5xl:3rem;

  /* --- Spacing (4px base) --- */
  --s1:0.25rem; --s2:0.5rem; --s3:0.75rem; --s4:1rem;
  --s5:1.25rem; --s6:1.5rem; --s8:2rem; --s10:2.5rem;
  --s12:3rem; --s16:4rem; --s20:5rem; --s24:6rem;

  /* --- Layout --- */
  --max-width:1280px;
  --header-h:100px;

  /* --- Radius --- */
  --r-sm:0.375rem; --r-md:0.5rem; --r-lg:0.75rem; --r-xl:1rem; --r-full:9999px;

  /* --- Shadows --- */
  --shadow-sm:0 1px 3px rgba(0,0,0,.06);
  --shadow-md:0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:0 12px 32px rgba(0,0,0,.12);
  --shadow-glow:0 0 40px rgba(22,119,255,.12);

  /* --- Transitions --- */
  --t-fast:150ms ease; --t-base:250ms ease; --t-slow:400ms ease;
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--s6)}
.section{padding:var(--s20) 0}
.section-label{display:inline-block;font-size:var(--text-lg);letter-spacing:.1em;text-transform:uppercase;color:var(--slate-600);margin-bottom:var(--s3)}
.section-title{font-size:var(--text-4xl);font-weight:700;color:var(--navy-900);line-height:1.2;margin-bottom:var(--s4)}
.section-subtitle{font-size:var(--text-lg);color:var(--slate-600);max-width:640px;margin-bottom:var(--s10)}
.text-center{text-align:center}
.text-center .section-subtitle{margin-left:auto;margin-right:auto}
.bg-navy{background:var(--navy-900);color:var(--white)}
.bg-navy .section-title{color:var(--white)}
.bg-navy .section-subtitle{color:var(--slate-400)}
.bg-light{background:var(--slate-100)}

/* --- Section Head (left title + optional more link) --- */
.section-head{margin-bottom:var(--s12)}
.section-head-top{display:flex;align-items:center;justify-content:space-between;gap:var(--s4)}
.section-head .section-label{margin-bottom:var(--s3)}
.section-head .section-title{font-size:var(--text-4xl);margin-bottom:0;position:relative;padding-left:var(--s5)}
.section-head .section-title::before{content:"";position:absolute;left:0;top:.14em;bottom:.14em;width:6px;border-radius:var(--r-full);background:linear-gradient(180deg,var(--slate-600),var(--slate-800))}
.section-head .section-subtitle{max-width:760px;margin-bottom:0;margin-top:var(--s3);padding-left:calc(var(--s5) + 6px)}
.section-more{display:inline-flex;align-items:center;gap:var(--s2);flex-shrink:0;font-size:var(--text-sm);font-weight:600;color:var(--slate-600);white-space:nowrap;transition:color var(--t-base),gap var(--t-base)}
.section-more span{font-size:var(--text-base);line-height:1;transition:transform var(--t-base)}
.section-more:hover{color:var(--copper-600);gap:var(--s3)}
.section-more:hover span{transform:translateX(2px)}
.bg-navy .section-more{color:var(--slate-300)}
.bg-navy .section-more:hover{color:var(--copper-400)}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:fixed;z-index:100;top:0;left:0;right:0;height:var(--header-h);
  background:transparent;
  border-bottom:1px solid transparent;
  display:flex;align-items:center;
  transition:background var(--t-base),border-color var(--t-base),backdrop-filter var(--t-base),box-shadow var(--t-base),transform var(--t-base);
}
/* Hide-on-scroll-down / show-on-scroll-up */
.site-header.hidden{transform:translateY(-100%)}
.site-header.scrolled,
.site-header:has(.header-nav.open){
  background:rgba(11,22,34,.98);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom-color:rgba(255,255,255,.06);box-shadow:0 5px 20px rgba(0,0,0,.18);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--s6);
}
.header-logo{display:flex;align-items:center;gap:var(--s3);color:var(--white)}
.header-logo .logo{width:56px;height:56px;object-fit:contain;border-radius:4px;padding:2px}
.header-logo .logo-text{height:42px;}
.header-logo .brand-copy{display:flex;flex-direction:column;gap:0;line-height:1.1}
.header-logo .brand-copy strong{font-size:var(--text-lg);color:var(--white);letter-spacing:0.25em;line-height:1.5}
.header-logo .brand-copy span{font-size:0.4rem;font-weight:500;color:var(--copper-400);letter-spacing:0.03em;text-transform:uppercase;opacity:0.75;white-space:nowrap}
.header-nav{display:flex;align-items:center;gap:var(--s8)}
.header-nav>a,.header-nav .nav-item>a{
  font-size:var(--text-base);font-weight:500;color:var(--slate-300);
  position:relative;padding:var(--s2) 0;transition:color var(--t-fast);
  display:inline-flex;align-items:center;gap:6px;
}
.header-nav>a::after,.header-nav .nav-item>a::after{
  content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;
  background:var(--copper-500);transition:width var(--t-base);
}
.header-nav>a:hover,.header-nav>a.active,
.header-nav .nav-item>a:hover,.header-nav .nav-item.active>a{color:var(--white)}
.header-nav>a:hover::after,.header-nav>a.active::after,
.header-nav .nav-item>a:hover::after,.header-nav .nav-item.active>a::after{width:100%}

/* --- Mega dropdown nav (时创意-style) --- */
.header-nav .nav-item{position:static;display:flex;align-items:center}
.nav-caret{width:0;height:0;flex-shrink:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;opacity:.6;transition:transform var(--t-base),opacity var(--t-base)}
.nav-item:hover .nav-caret{transform:rotate(180deg);opacity:1}
.mega{
  position:fixed;left:0;right:0;top:var(--header-h);z-index:99;
  background:rgba(11,22,34,.98);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid rgba(22,119,255,.25);border-bottom:1px solid rgba(255,255,255,.06);
  box-shadow:0 24px 48px rgba(0,0,0,.35);
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--t-base),transform var(--t-base),visibility var(--t-base);
}
.nav-item:hover .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega-inner{max-width:var(--max-width);margin:0 auto;padding:var(--s10) var(--s6);display:flex;gap:var(--s16);flex-wrap:wrap}
.mega-col{display:flex;flex-direction:column;gap:var(--s3);min-width:150px}
.mega-title{font-size:var(--text-lg);font-weight:700;color:var(--white);margin-bottom:var(--s1);position:relative;padding-left:var(--s3);transition:color var(--t-fast)}
.mega-title::before{content:'';position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--copper-400),var(--copper-600))}
.mega-title:hover{color:var(--copper-400)}
.mega-link{font-size:var(--text-sm);color:var(--slate-400);padding-left:var(--s3);transition:color var(--t-fast),transform var(--t-fast)}
.mega-link:hover{color:var(--copper-400);transform:translateX(3px)}
.header-actions{display:flex;align-items:center;gap:var(--s4)}
.lang-switch{
  font-size:var(--text-xs);font-weight:600;color:var(--slate-400);
  padding:var(--s1) var(--s3);border:1px solid var(--slate-600);border-radius:var(--r-full);
  background:transparent;transition:all var(--t-fast);
}
.lang-switch:hover{color:var(--white);border-color:var(--copper-500)}
.mobile-menu-btn{
  display:none;flex-direction:column;gap:5px;background:none;padding:var(--s2);
}
.mobile-menu-btn span{display:block;width:24px;height:2px;background:var(--white);border-radius:1px;transition:all var(--t-fast)}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:var(--s2);
  font-weight:600;font-size:var(--text-sm);
  padding:var(--s3) var(--s6);border-radius:var(--r-md);
  transition:all var(--t-fast);white-space:nowrap;
}
.btn-primary{background:var(--copper-500);color:var(--white)}
.btn-primary:hover{background:var(--copper-400);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-outline{background:transparent;color:var(--white);border:1px solid var(--slate-600)}
.btn-outline:hover{border-color:var(--copper-500);color:var(--copper-400)}
.btn-outline-dark{background:transparent;color:var(--navy-700);border:1px solid var(--slate-400)}
.btn-outline-dark:hover{border-color:var(--copper-500);color:var(--copper-600)}
.product-card-footer .btn-primary{background-color:var(--navy-900);color:var(--white);transition:background-color .1s ease}
.product-card-footer .btn-primary:hover{background-color:var(--copper-500)}
.btn-lg{padding:var(--s4) var(--s8);font-size:var(--text-base)}
.btn-sm{padding:var(--s2) var(--s4);font-size:var(--text-xs)}

/* ============================================================
   HERO SECTION — Kowin-style Fullscreen Carousel
   ============================================================ */
.hero{position:relative;width:100%;height:100vh;min-height:600px;overflow:hidden;background:var(--navy-950)}
@supports(height:100dvh){.hero{height:100dvh}}

/* Carousel container */
.hero-carousel{position:absolute;inset:0;z-index:1;touch-action:pan-y;-webkit-user-select:none;user-select:none;cursor:grab}
.hero-carousel:active{cursor:grabbing}

/* Each slide */
.hero-slide{position:absolute;inset:0;z-index:1;opacity:0;transition:opacity .5s ease;pointer-events:none}
.hero-slide.active{opacity:1;z-index:2;pointer-events:auto}

/* Background layer — clip-path right-to-left reveal */
.hero-slide-bg{position:absolute;inset:0;clip-path:inset(0 0 0 100%);-webkit-clip-path:inset(0 0 0 100%);transition:clip-path 1s cubic-bezier(.4,0,.2,1),-webkit-clip-path 1s cubic-bezier(.4,0,.2,1)}
.hero-slide.active .hero-slide-bg{clip-path:inset(0 0 0 0);-webkit-clip-path:inset(0 0 0 0)}
.hero-slide-bg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-slide-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(6,13,21,.55) 0%,rgba(6,13,21,.7) 100%)}

/* Circuit grid overlay on each slide bg */
.hero-slide-bg::before{content:'';position:absolute;inset:0;opacity:.04;background-image:linear-gradient(rgba(255,255,255,.15) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.15) 1px,transparent 1px);background-size:60px 60px;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,#000,transparent 90%);mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,#000,transparent 90%)}

/* Slide content container */
.hero-slide-content{position:relative;z-index:5;width:100%;height:100%;display:flex;align-items:center;padding-top:var(--header-h)}
.hero-slide-inner{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--s6)}

/* Text wrapper — slides in from right */
.hero-slide-text{transform:translateX(60px);opacity:0;transition:transform 1.2s cubic-bezier(.4,0,.2,1) .3s,opacity 1.2s cubic-bezier(.4,0,.2,1) .3s;max-width:680px}
.hero-slide.active .hero-slide-text{transform:translateX(0);opacity:1}

/* Badge */
.hero-badge{display:inline-flex;align-items:center;gap:var(--s2);padding:var(--s2) var(--s4);font-size:var(--text-sm);font-weight:600;color:var(--copper-400);background:rgba(22,119,255,.1);border:1px solid rgba(22,119,255,.2);border-radius:var(--r-full);margin-bottom:var(--s6);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.hero-badge-dot{width:8px;height:8px;border-radius:50%;background:var(--copper-400);box-shadow:0 0 8px rgba(64,150,255,.6);animation:badgePulse 2s ease-in-out infinite}
@keyframes badgePulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}

/* Title */
.hero-title{font-size:clamp(2rem,5.5vw,4rem);font-weight:800;color:var(--white);line-height:1.15;margin-bottom:var(--s5);letter-spacing:-.02em}
.hero-title span{color:var(--copper-400)}

/* Description */
.hero-desc{font-size:var(--text-lg);color:var(--slate-400);line-height:1.7;margin-bottom:var(--s8);max-width:560px}

/* Action buttons */
.hero-actions{display:flex;gap:var(--s4);flex-wrap:wrap}
.hero-btn-primary{background:var(--copper-500)!important;color:var(--white)!important;box-shadow:0 4px 24px rgba(22,119,255,.25);transition:all var(--t-base)}
.hero-btn-primary:hover{background:var(--copper-400)!important;box-shadow:0 6px 32px rgba(22,119,255,.35)!important;transform:translateY(-2px)!important}
.hero-btn-outline{border:1px solid rgba(148,163,184,.4)!important;color:var(--white)!important;background:transparent!important;transition:all var(--t-base)}
.hero-btn-outline:hover{border-color:var(--copper-500)!important;color:var(--copper-400)!important}

/* ===== Carousel Controls (bottom bar) ===== */
.hero-controls{position:absolute;bottom:0;left:0;right:0;z-index:10;padding:var(--s6) 0 var(--s5)}
.hero-controls-inner{max-width:1200px;margin:0 auto;padding:0 var(--s6);display:flex;align-items:center;gap:var(--s5)}

/* Pager dots with SVG ring countdown */
.hero-pager{display:flex;align-items:center;gap:var(--s3)}
.hero-dot{width:34px;height:34px;position:relative;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hero-dot svg{position:absolute;inset:0;width:34px;height:34px;transform:rotate(-90deg)}
.hero-dot-ring{fill:none;stroke:rgba(255,255,255,.15);stroke-width:2}
.hero-dot-progress{fill:none;stroke:var(--copper-500);stroke-width:2;stroke-linecap:round;stroke-dasharray:100.5;stroke-dashoffset:100.5}
.hero-dot.active .hero-dot-progress{animation:ringCountdown 5s linear}
@keyframes ringCountdown{from{stroke-dashoffset:100.5}to{stroke-dashoffset:0}}
.hero-dot-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.3);transition:all var(--t-base)}
.hero-dot.active .hero-dot-dot{background:var(--copper-500);box-shadow:0 0 8px rgba(22,119,255,.5)}
.hero-dot:hover .hero-dot-dot{background:rgba(255,255,255,.6)}
.hero-dot.paused .hero-dot-progress{animation-play-state:paused}
.hero-dot.paused svg .hero-dot-progress{animation-play-state:paused}

/* Pause/Play button */
.hero-pause{width:34px;height:34px;position:relative;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;margin-left:var(--s2)}
.hero-pause-icon{position:absolute;display:flex;align-items:center;justify-content:center;transition:opacity .2s ease}
.hero-pause-pause{display:flex;gap:3px}
.hero-pause-pause i{display:block;width:3px;height:12px;background:rgba(255,255,255,.6);border-radius:1px}
.hero-pause-play{display:none}
.hero-pause-play i{width:0;height:0;border-style:solid;border-width:7px 0 7px 11px;border-color:transparent transparent transparent rgba(255,255,255,.6)}
.hero-pause.paused .hero-pause-pause{display:none}
.hero-pause.paused .hero-pause-play{display:flex}
.hero-pause:hover .hero-pause-pause i,.hero-pause:hover .hero-pause-play i{border-left-color:rgba(64,150,255,.9)}
.hero-pause:hover .hero-pause-pause i{background:rgba(64,150,255,.9)}

/* Prev/Next arrows */
.hero-arrow{width:30px;height:30px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--t-base)}
.hero-arrow svg{width:16px;height:16px;fill:none;stroke:rgba(255,255,255,.4);stroke-width:2;transition:all var(--t-base)}
.hero-arrow:hover svg{stroke:var(--copper-400)}
.hero-arrow-prev svg{transform:rotate(180deg)}

/* Slide counter */
.hero-counter{margin-left:auto;font-size:var(--text-sm);color:rgba(203,213,225,.4);font-family:var(--font-mono);letter-spacing:.05em}
.hero-counter-current{color:var(--copper-400);font-weight:700;font-size:var(--text-lg)}
.hero-counter-sep{margin:0 var(--s1);color:rgba(203,213,225,.2)}

/* Scroll indicator */
.hero-scroll{position:absolute;bottom:var(--s5);left:50%;transform:translateX(-50%);z-index:9;color:rgba(203,213,225,.3);font-size:var(--text-xs);display:flex;flex-direction:column;align-items:center;gap:var(--s2);animation:bounce 2s infinite;pointer-events:none}
.hero-scroll-arrow{width:18px;height:18px;border-right:2px solid rgba(203,213,225,.2);border-bottom:2px solid rgba(203,213,225,.2);transform:rotate(45deg)}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* Hero responsive */
@media(max-width:768px){
  .hero{height:auto;min-height:auto}
  .hero-carousel{position:relative;height:auto;min-height:calc(100vh - var(--header-h))}
  @supports(min-height:100dvh){.hero-carousel{min-height:calc(100dvh - var(--header-h))}}
  .hero-slide{position:relative;min-height:calc(100vh - var(--header-h))}
  @supports(min-height:100dvh){.hero-slide{min-height:calc(100dvh - var(--header-h))}}
  .hero-slide:not(.active){display:none}
  .hero-slide-content{padding-top:calc(var(--header-h) + var(--s8));padding-bottom:120px}
  .hero-slide-inner{padding:0 var(--s4)}
  .hero-title{font-size:clamp(1.6rem,6vw,2.4rem)}
  .hero-desc{font-size:var(--text-base);line-height:1.65}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-scroll{display:none}
  .hero-controls{position:absolute;background:rgba(6,13,21,.9);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid rgba(255,255,255,.06)}
  .hero-controls-inner{padding:0 var(--s4);gap:var(--s3)}
  .hero-dot{width:26px;height:26px}
  .hero-dot svg{width:26px;height:26px}
  .hero-dot-ring,.hero-dot-progress{stroke-width:1.5}
  .hero-pause{width:26px;height:26px}
  .hero-arrow{width:24px;height:24px}
  .hero-arrow svg{width:14px;height:14px}
  .hero-counter{font-size:var(--text-xs)}
}
@media(max-width:480px){
  .hero-title{font-size:1.5rem}
  .hero-desc{font-size:var(--text-sm)}
  .hero-badge{font-size:var(--text-xs)}
  .hero-controls-inner{gap:var(--s2)}
  .hero-counter{display:none}
}

/* ============================================================
   SECTION: FEATURES GRID (通用功能卡片)
   ============================================================ */
.features-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--s6);
}
.feature-card{
  background:var(--white);border-radius:var(--r-lg);
  padding:var(--s8);border:1px solid var(--slate-300);
  transition:all var(--t-base);position:relative;overflow:hidden;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--copper-500);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-slow);
}
.feature-card:hover{box-shadow:var(--shadow-lg);border-color:var(--slate-400);transform:translateY(-2px)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--copper-50);border-radius:var(--r-md);margin-bottom:var(--s5);font-size:var(--text-xl)}
.feature-card h3{font-size:var(--text-lg);font-weight:700;color:var(--navy-900);margin-bottom:var(--s3)}
.feature-card p{font-size:var(--text-sm);color:var(--slate-600);line-height:1.7}

/* ============================================================
   PRODUCT CARDS (产品卡片)
   ============================================================ */
.product-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--s6);
}
.product-card{
  background:var(--white);border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--slate-300);transition:all var(--t-base);
  display:flex;flex-direction:column;
}
.product-card:hover{box-shadow:var(--shadow-lg);border-color:var(--copper-300);transform:translateY(-3px)}
.product-card-image{height:200px;background:var(--slate-200);display:flex;align-items:center;justify-content:center;overflow:hidden}
.product-card-image img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow)}
.product-card-image.contain{background:#fff;}
.product-card-image.contain img{object-fit:contain;padding:var(--s5)}
.product-card:hover .product-card-image img{transform:scale(1.035)}
.product-card-body{padding:var(--s6);padding-top:var(--s3);flex:1;display:flex;flex-direction:column}
.product-card-tag{font-size:var(--s4);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--s2)}
.product-card h3{font-size:var(--text-xl);font-weight:700;color:var(--navy-900);margin-bottom:var(--s2)}
.product-card-model{font-size:var(--s4);color:var(--slate-800);margin-bottom:var(--s4)}
.product-card-specs{display:grid;grid-template-columns:1fr 1fr;gap:var(--s2) var(--s4);margin-bottom:var(--s5)}
.product-card-specs dt{font-size:var(--text-xs);font-weight:600;color:var(--slate-800)}
.product-card-specs dd{font-size:var(--text-sm);color:var(--navy-800)}
.product-card-footer{margin-top:auto;display:flex;gap:var(--s3)}

/* ============================================================
   TESTING FLOW (测试流程 - 核心组件)
   ============================================================ */
.test-flow{
  display:flex;justify-content:center;gap:0;position:relative;
  padding:var(--s10) 0;
}
.test-flow::before{
  content:'';position:absolute;top:50%;left:5%;right:5%;height:2px;
  background:var(--slate-300);z-index:0;
}
.test-step{
  position:relative;z-index:1;flex:1;max-width:180px;text-align:center;cursor:pointer;
}
.test-step-num{
  width:48px;height:48px;border-radius:var(--r-full);
  background:var(--white);border:2px solid var(--slate-300);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto var(--s4);font-weight:700;font-size:var(--text-lg);
  color:var(--slate-500);transition:all var(--t-base);
}
.test-step:hover .test-step-num,.test-step.active .test-step-num{
  background:var(--copper-500);border-color:var(--copper-500);color:var(--white);
  box-shadow:0 0 0 8px rgba(22,119,255,.15);
}
.test-step-title{font-size:var(--text-sm);font-weight:600;color:var(--navy-800);margin-bottom:var(--s1)}
.test-step-desc{font-size:var(--text-xs);color:var(--slate-500)}
.test-step-detail{
  position:absolute;top:calc(100% + var(--s6));left:50%;transform:translateX(-50%);
  width:260px;background:var(--white);border:1px solid var(--slate-300);
  border-radius:var(--r-lg);padding:var(--s5);box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transition:all var(--t-base);
  z-index:10;text-align:left;
}
.test-step:hover .test-step-detail{opacity:1;visibility:visible;top:calc(100% + var(--s4))}
.test-step-detail img{width:100%;border-radius:var(--r-md);margin-bottom:var(--s3)}
.test-step-detail h4{font-size:var(--text-sm);font-weight:600;color:var(--navy-800);margin-bottom:var(--s2)}
.test-step-detail p{font-size:var(--text-xs);color:var(--slate-600);line-height:1.6}
.test-step-detail .test-params{
  font-size:var(--text-xs);color:var(--copper-600);font-weight:600;
  margin-top:var(--s2);padding-top:var(--s2);border-top:1px solid var(--slate-200);
}

/* ============================================================
   TEST CHECKLIST (测试能力清单 + 勾选询盘)
   ============================================================ */
.checklist-section{padding:var(--s10) 0}
.checklist-categories{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:var(--s6);margin-bottom:var(--s8)}
.checklist-cat{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);overflow:hidden;
}
.checklist-cat-header{
  background:var(--navy-800);color:var(--white);padding:var(--s4) var(--s5);
  font-weight:700;font-size:var(--text-sm);display:flex;align-items:center;gap:var(--s3);
}
.checklist-cat-header .cat-icon{font-size:var(--text-lg)}
.checklist-items{padding:var(--s2) 0}
.checklist-item{
  display:flex;align-items:center;gap:var(--s3);padding:var(--s3) var(--s5);
  border-bottom:1px solid var(--slate-100);cursor:pointer;transition:background var(--t-fast);
}
.checklist-item:hover{background:var(--copper-50)}
.checklist-item:last-child{border-bottom:none}
.checklist-checkbox{
  width:20px;height:20px;border:2px solid var(--slate-400);border-radius:4px;
  flex-shrink:0;display:flex;align-items:center;justify-content:center;
  transition:all var(--t-fast);
}
.checklist-item.checked .checklist-checkbox{
  background:var(--copper-500);border-color:var(--copper-500);
}
.checklist-item.checked .checklist-checkbox::after{
  content:'✓';color:var(--white);font-size:12px;font-weight:700;
}
.checklist-label{font-size:var(--text-sm);color:var(--slate-700);flex:1}
.checklist-count{font-size:var(--text-xs);color:var(--slate-400)}
.inquiry-bar{
  background:var(--navy-800);border-radius:var(--r-lg);padding:var(--s5) var(--s6);
  display:flex;align-items:center;justify-content:space-between;gap:var(--s6);
}
.inquiry-bar-text{font-size:var(--text-sm);color:var(--slate-300)}
.inquiry-bar-count{color:var(--copper-400);font-weight:700;font-size:var(--text-lg)}
.inquiry-bar .btn-primary{flex-shrink:0}

/* ============================================================
   EQUIPMENT TABLE (设备表格)
   ============================================================ */
.equipment-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:var(--s5)}
.equipment-card{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);
  padding:var(--s6);display:flex;gap:var(--s5);transition:all var(--t-base);
}
.equipment-card:hover{box-shadow:var(--shadow-md);border-color:var(--copper-300)}
.equipment-card-img{width:116px;height:92px;border-radius:var(--r-md);background:var(--slate-200);flex-shrink:0;overflow:hidden}
.equipment-card-img img{width:100%;height:100%;object-fit:cover}
.equipment-card-info{flex:1}
.equipment-card-info h4{font-size:var(--text-xl);font-weight:700;color:var(--navy-800);margin-bottom:var(--s2)}
.equipment-card-info .eq-brand{font-size:var(--text-xs);color:var(--slate-500);margin-bottom:var(--s3)}
.equipment-card-stats{display:flex;gap:var(--s5)}
.equipment-card-stat{text-align:center}
.equipment-card-stat-value{font-size:var(--text-base);font-weight:700;color:var(--slate-800)}
.equipment-card-stat-label{font-size:var(--text-xs);color:var(--slate-500)}

/* ============================================================
   DATA TABLE (数据表格)
   ============================================================ */
.data-table{width:100%;border-collapse:collapse;font-size:var(--text-sm)}
.data-table thead{background:var(--navy-800);color:var(--white)}
.data-table th{padding:var(--s3) var(--s5);text-align:left;font-weight:600;font-size:var(--text-xs);letter-spacing:.05em;text-transform:uppercase}
.data-table td{padding:var(--s3) var(--s5);border-bottom:1px solid var(--slate-200);color:var(--slate-700)}
.data-table tbody tr:hover{background:var(--slate-50)}
.data-table tbody tr:last-child td{border-bottom:none}
.data-table-wrap{overflow-x:auto;border:1px solid var(--slate-300);border-radius:var(--r-lg);overflow:hidden}

/* ============================================================
   MEDIA / FACTORY BLOCKS
   ============================================================ */
.media-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--s8);align-items:center}
.media-frame{overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--slate-300);background:var(--white);box-shadow:var(--shadow-md)}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame.tall{aspect-ratio:4/3}
.image-mosaic{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--s4)}
.image-mosaic .media-frame{aspect-ratio:4/3}
.factory-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:var(--s6);align-items:stretch}
.factory-main{min-height:360px}
.factory-list{display:grid;gap:var(--s4)}
.factory-chip{display:flex;gap:var(--s4);align-items:flex-start;padding:var(--s5);background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg)}
.factory-chip-num{font-family:var(--font-mono);font-size:var(--text-lg);font-weight:700;min-width:52px}
.factory-chip h4{font-size:var(--text-base);color:var(--navy-900);margin-bottom:var(--s1)}
.factory-chip p{font-size:var(--text-sm);color:var(--slate-600);line-height:1.6}
.process-rail{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--s3);margin-top:var(--s8)}
.process-rail-item{background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-md);padding:var(--s4);min-height:112px}
.process-rail-item strong{display:block;font-family:var(--font-mono);font-size:var(--text-sm);color:var(--copper-600);margin-bottom:var(--s2)}
.process-rail-item span{display:block;font-size:var(--text-sm);font-weight:700;color:var(--navy-800);line-height:1.3}
.process-rail-item small{display:block;color:var(--slate-500);font-size:var(--text-xs);margin-top:var(--s2);line-height:1.4}

/* ============================================================
   CERT / BADGE CARDS (认证与徽章)
   ============================================================ */
.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--s4)}
.cert-card{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);
  padding:var(--s6);text-align:center;transition:all var(--t-base);
}
.cert-card:hover{box-shadow:var(--shadow-md);border-color:var(--copper-300)}
.cert-card-icon{font-size:2.5rem;margin-bottom:var(--s4)}
.cert-card h4{font-size:var(--text-base);font-weight:700;color:var(--navy-800);margin-bottom:var(--s1)}
.cert-card p{font-size:var(--text-xs);color:var(--slate-500)}

/* ============================================================
   FAILURE CASE CARD (失效分析案例)
   ============================================================ */
.case-card{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);
  overflow:hidden;transition:all var(--t-base);
}
.case-card:hover{box-shadow:var(--shadow-md);border-color:var(--red-light)}
.case-card-header{
  padding:var(--s5) var(--s6);background:var(--red-light);
  display:flex;align-items:flex-start;gap:var(--s3);
}
.case-card-header .case-icon{font-size:var(--text-xl);flex-shrink:0}
.case-card-header h4{font-size:var(--text-base);font-weight:700;color:var(--red);margin-bottom:var(--s1)}
.case-card-header p{font-size:var(--text-sm);color:var(--slate-700)}
.case-card-body{padding:var(--s5) var(--s6)}
.case-flow{display:flex;align-items:center;gap:var(--s3);flex-wrap:wrap;margin-bottom:var(--s4)}
.case-flow-step{
  flex:1;min-width:120px;padding:var(--s3);background:var(--slate-100);
  border-radius:var(--r-md);text-align:center;
}
.case-flow-step-label{font-size:var(--text-sm);color:var(--slate-800);margin-bottom:var(--s1)}
.case-flow-step-text{font-size:var(--text-sm);font-weight:600;color:var(--slate-700)}
.case-flow-arrow{color:var(--slate-500);font-size:var(--text-3xl);flex-shrink:0}
.case-result{
  background:var(--green-light);padding:var(--s4);border-radius:var(--r-md);
  font-size:var(--text-sm);color:var(--slate-700);
}
.case-result strong{color:var(--green)}

/* ============================================================
   STAT BARS (数据条)
   ============================================================ */
.stats-row{display:flex;gap:var(--s6);flex-wrap:wrap;justify-content:center}
.stat-item{text-align:center;padding:var(--s5) var(--s8)}
.stat-value{font-size:var(--text-4xl);font-weight:800;color:var(--copper-500);line-height:1}
.stat-value-unit{font-size:var(--text-lg);font-weight:600;color:var(--copper-400)}
.stat-label{font-size:var(--text-sm);color:var(--slate-500);margin-top:var(--s2)}

/* ============================================================
   NEWS / ARTICLE CARDS
   ============================================================ */
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--s6)}
.news-card{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);
  overflow:hidden;transition:all var(--t-base);display:block;
}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.news-card:focus-visible{outline:3px solid var(--copper-400);outline-offset:3px}
.news-card-image{height:180px;background:var(--slate-200);overflow:hidden}
.news-card-image img{width:100%;height:100%;object-fit:cover}
.news-card-body{padding:var(--s5)}
.news-card-date{font-size:var(--text-xs);color:var(--slate-500);margin-bottom:var(--s2)}
.news-card h4{font-size:var(--text-base);font-weight:700;color:var(--navy-800);margin-bottom:var(--s2);line-height:1.4}
.news-card p{font-size:var(--text-sm);color:var(--slate-600);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-cat{display:inline-block;font-size:var(--text-xs);font-weight:600;color:var(--copper-600);padding:var(--s1) var(--s3);background:var(--copper-50);border-radius:var(--r-full);margin-bottom:var(--s3)}

/* 新闻卡（首页 + 关于页最新动态）：标题在最上，其次分类(左)+日期(右)一行，最后简介 */
#home-news .news-card h4,#news .news-card h4{margin-bottom:var(--s3)}
#home-news .news-card-meta,#news .news-card-meta{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);margin-bottom:var(--s3)}
#home-news .news-card-cat,#news .news-card-cat{margin-bottom:0}
#home-news .news-card-date,#news .news-card-date{margin-bottom:0}



/* ============================================================
   NEWS CENTER
   ============================================================ */
.news-featured{display:grid;grid-template-columns:1.1fr .9fr;gap:var(--s8);align-items:stretch;margin-bottom:var(--s10)}
.news-featured-media{min-height:360px}
.news-featured-copy{background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);padding:var(--s8);display:flex;flex-direction:column;justify-content:center}
.news-meta{display:flex;gap:var(--s3);align-items:center;flex-wrap:wrap;font-size:var(--text-base);color:var(--slate-500);margin-bottom:var(--s3)}
.news-meta strong{color:var(--slate-600)}
.news-featured-copy h2{font-size:var(--text-3xl);line-height:1.2;color:var(--navy-900);margin-bottom:var(--s4)}
.news-featured-copy p{color:var(--slate-600);line-height:1.8;margin-bottom:var(--s6)}
.news-list{display:grid;gap:var(--s4)}
.news-row{display:grid;grid-template-columns:220px 1fr;gap:var(--s5);align-items:center;background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);padding:var(--s4);transition:all var(--t-base)}
.news-row:hover{border-color:var(--copper-500);box-shadow:var(--shadow-lg),0 0 0 1px var(--copper-500);transform:translateY(-1px);cursor:pointer}
.news-row>div{display:flex;flex-direction:column}
.news-row-img{height:132px;border-radius:var(--r-md);overflow:hidden;background:var(--slate-200)}
.news-row-img img{width:100%;height:100%;object-fit:cover}
.news-row h3{font-size:var(--text-2xl);line-height:1.35;margin-bottom:var(--s2)}
.news-row-title{color:var(--navy-900);transition:color var(--t-fast)}
.news-row-title:hover{color:var(--copper-500)}
.news-row p{font-size:var(--text-lg);color:var(--slate-600);line-height:1.7}
.news-row-date{font-size:var(--text-base);color:var(--slate-500);white-space:nowrap;align-self:flex-end;margin-top:var(--s3)}
.news-featured-date{justify-content:flex-end}
.article-shell{max-width:980px;margin:0 auto}
.article-head{max-width:760px;margin:0 auto var(--s8);text-align:center}
.article-head h1{font-size:var(--text-4xl);line-height:1.18;color:var(--navy-900);margin:var(--s4) 0}
.article-cover{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--slate-300);margin-bottom:var(--s8)}
.article-cover img{width:100%;height:auto}
.article-body{background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);padding:var(--s10)}
.article-body h2{font-size:var(--text-2xl);color:var(--navy-900);margin:var(--s8) 0 var(--s4)}
.article-body h2:first-child{margin-top:0}
.article-body p{font-size:var(--text-base);color:var(--slate-700);line-height:1.9;margin-bottom:var(--s5)}
.article-body ul{list-style:disc;padding-left:var(--s6);margin:0 0 var(--s6)}
.article-body li{color:var(--slate-700);line-height:1.9;margin-bottom:var(--s2)}
.article-quote{border-left:3px solid var(--copper-500);background:var(--copper-50);padding:var(--s5);border-radius:0 var(--r-md) var(--r-md) 0;margin:var(--s6) 0;color:var(--navy-800)}
.article-nav{display:flex;justify-content:space-between;gap:var(--s4);margin-top:var(--s8)}
@media (max-width:768px){.news-featured{grid-template-columns:1fr}.news-row{grid-template-columns:1fr}.news-row-img{height:190px}.news-row-date{justify-self:start}.article-body{padding:var(--s6)}.article-head h1{font-size:var(--text-2xl)}}

/* ============================================================
   TABS
   ============================================================ */
.tabs{display:flex;gap:var(--s2);margin-bottom:var(--s8);flex-wrap:wrap;justify-content:center}
.tab-btn{
  padding:var(--s3) var(--s6);font-size:var(--text-sm);font-weight:600;
  color:var(--slate-600);background:var(--white);border:1px solid var(--slate-300);
  border-radius:var(--r-full);transition:all var(--t-fast);
}
.tab-btn:hover{border-color:var(--copper-400);color:var(--copper-600)}
.tab-btn.active{background:var(--navy-800);color:var(--white);border-color:var(--navy-800)}

/* Shared pager */
.site-pager{display:flex;justify-content:center;gap:var(--s2);margin-top:var(--s8);flex-wrap:wrap}
.site-pager-item{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--slate-300);border-radius:var(--r-md);color:var(--slate-600);font-size:var(--text-sm);font-weight:600}
.site-pager-link{display:grid;place-items:center;width:100%;height:100%;color:inherit}
.site-pager-item:hover{border-color:var(--copper-400);color:var(--copper-600)}
.site-pager-item.is-active{background:var(--navy-800);border-color:var(--navy-800);color:var(--white)}
.site-pager-item.is-disabled{color:var(--slate-400);cursor:not-allowed}

/* ============================================================
   PAGE HERO (内页标题区)
   ============================================================ */
.page-hero{
  padding:calc(var(--header-h) + var(--s16)) 0 var(--s12);
  background:linear-gradient(135deg,var(--navy-950),var(--navy-800));
  text-align:center;
}
.page-hero .section-label{margin-bottom:var(--s4)}
.page-hero .section-title{font-size:var(--text-5xl);color:var(--white)}
.page-hero .section-subtitle{color:var(--slate-400);margin:0 auto;max-width:640px}
.page-hero .about-hero-logo{display:block;margin:0 auto var(--s4);height:auto;max-width:280px}
.breadcrumb-bar{background:var(--slate-100);border-bottom:1px solid var(--slate-300)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2);margin:0;padding:var(--s3) 0;list-style:none;font-size:var(--text-sm);color:var(--slate-600)}
.breadcrumb li{display:flex;align-items:center;gap:var(--s2)}
.breadcrumb li+li::before{content:"/";color:var(--slate-400)}
.breadcrumb a{color:var(--slate-600);transition:color var(--t-fast)}
.breadcrumb a:hover{color:var(--copper-600)}
.breadcrumb li[aria-current="page"]{color:var(--navy-900);font-weight:600}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.about-section-anchor{scroll-margin-top:var(--header-h)}
.about-hero .section-title{letter-spacing:.16em;margin-bottom:var(--s2)}
.about-hero .section-label{letter-spacing:.08em;color:var(--slate-200)}
.about-hero .section-subtitle{max-width:780px}
.about-overview{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:var(--s10);align-items:center}
.about-overview-copy>p{font-size:var(--text-lg);color:var(--slate-600);line-height:1.9}
.about-overview-media{position:relative;min-height:440px;border:1px solid var(--slate-300);border-radius:var(--r-lg);overflow:hidden;background:var(--slate-200);box-shadow:var(--shadow-md)}
.about-overview-media img{width:100%;height:100%;min-height:440px;}
.about-overview-media figcaption{position:absolute;left:var(--s5);right:var(--s5);bottom:var(--s5);padding:var(--s3) var(--s4);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-md);background:rgba(6,13,21,.82);color:var(--white);font-size:var(--text-sm);text-align:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.about-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s3);margin-top:var(--s8)}
.about-stat{min-height:104px;padding:var(--s4) var(--s5);border-left:3px solid var(--copper-500);background:var(--slate-100);display:flex;flex-direction:column;justify-content:center}
.about-stat strong{font-size:var(--text-2xl);line-height:1.2;color:var(--navy-900)}
.about-stat span{margin-top:var(--s2);font-size:var(--text-sm);color:var(--slate-600)}
.about-section-head{margin-bottom:var(--s10)}
.about-section-head .section-label{margin-bottom:var(--s2)}
.about-section-head .section-title{padding-left:0}
.about-section-head .section-title::before{display:none}
.about-section-head .section-subtitle{padding-left:0;max-width:760px}
.about-advantages{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:var(--s5)}
.about-advantage-card{grid-column:span 2;min-height:260px;padding:var(--s6);background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);transition:border-color var(--t-base),box-shadow var(--t-base),transform var(--t-base)}
.about-advantage-card:nth-child(4){grid-column:2/span 2}
.about-advantage-card:hover{border-color:var(--copper-300);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.about-advantage-card img{width:88px;height:88px;object-fit:contain;margin-bottom:var(--s4)}
.about-advantage-card h3{font-size:var(--text-lg);color:var(--navy-900);margin-bottom:var(--s2)}
.about-advantage-card p{font-size:var(--text-sm);color:var(--slate-600);line-height:1.75}
.about-timeline-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:var(--s12);align-items:start}
.about-timeline-intro .section-subtitle{margin-bottom:var(--s6)}
.about-timeline-media{aspect-ratio:4/3;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--slate-300);box-shadow:var(--shadow-md)}
.about-timeline-media img{width:100%;height:100%;object-fit:cover}
.about-timeline{margin-top:var(--s2)}
.about-timeline .timeline-item{min-height:104px;margin-bottom:var(--s5);padding:0 0 var(--s5) var(--s2);border-bottom:1px solid var(--slate-200)}
.about-timeline .timeline-item:last-child{margin-bottom:0;border-bottom:0}
.about-timeline .timeline-year{color:var(--copper-600);font-size:var(--text-base)}
.about-timeline .timeline-title{font-size:var(--text-lg)}
.about-timeline .timeline-desc{font-size:var(--text-base);line-height:1.7}
.about-locations{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s5)}
.about-location-card{min-height:240px;padding:var(--s8);border:1px solid var(--navy-600);border-radius:var(--r-lg);background:var(--navy-800)}
.about-location-index{display:block;font-family:var(--font-mono);font-size:var(--text-sm);font-weight:700;color:var(--copper-400);margin-bottom:var(--s8)}
.about-location-card h3{font-size:var(--text-xl);color:var(--white);margin-bottom:var(--s3)}
.about-location-card p{font-size:var(--text-sm);color:var(--slate-300);line-height:1.75}
.about-contact-layout{margin-top:var(--s8)}
.about-contact-layout .contact-info{padding:var(--s4) 0}
.about-contact-layout .contact-info-item{font-size:var(--text-base)}
.about-contact-layout .contact-info-item .ci-icon{width:48px;height:48px;border-radius:var(--r-sm);font-family:var(--font-mono);font-size:.68rem;font-weight:700;color:var(--copper-700)}
.about-contact-layout .contact-info-item a{color:var(--navy-800);line-height:1.5;transition:color var(--t-fast)}
.about-contact-layout .contact-info-item a:hover{color:var(--copper-600)}
.about-office-hours-title{margin-top:var(--s8)}
.about-submit-button{width:100%;justify-content:center}
.about-cta-section{padding-top:0}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:var(--s10)}
.contact-info h3{font-size:var(--text-xl);font-weight:700;color:var(--navy-900);margin-bottom:var(--s4)}
.contact-info-item{display:flex;gap:var(--s3);margin-bottom:var(--s5);font-size:var(--text-sm)}
.contact-info-item .ci-icon{width:36px;height:36px;background:var(--copper-50);border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:var(--text-lg)}
.contact-info-item strong{display:block;font-size:var(--text-xs);color:var(--slate-500);margin-bottom:var(--s1)}
.contact-info-item span{color:var(--navy-800);line-height:1.5}
.contact-form{background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);padding:var(--s8)}
.contact-form h3{font-size:var(--text-xl);font-weight:700;color:var(--navy-900);margin-bottom:var(--s6)}
.form-group{margin-bottom:var(--s5)}
.form-group label{display:block;font-size:var(--text-sm);font-weight:600;color:var(--navy-800);margin-bottom:var(--s2)}
.form-input,.form-select,.form-textarea{
  width:100%;padding:var(--s3) var(--s4);border:1px solid var(--slate-300);border-radius:var(--r-md);
  font-size:var(--text-sm);font-family:inherit;color:var(--navy-800);background:var(--white);
  transition:border-color var(--t-fast);
}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--copper-500);box-shadow:0 0 0 3px rgba(22,119,255,.1)}
.form-textarea{resize:vertical;min-height:120px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--s4)}
.inquiry-honeypot{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important}
.inquiry-form-message{display:none;margin-bottom:var(--s4);padding:var(--s3) var(--s4);border-radius:var(--r-md);font-size:var(--text-sm);line-height:1.5}
.inquiry-form-message.error{display:block;color:#991b1b;background:#fef2f2;border:1px solid #fecaca}
.inquiry-success{min-height:480px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--s8);text-align:center;outline:none}
.inquiry-success[hidden]{display:none}
.inquiry-success-icon{width:80px;height:80px;display:flex;align-items:center;justify-content:center;margin-bottom:var(--s6);border:2px solid #86efac;border-radius:50%;color:#15803d;background:#f0fdf4;font-size:2.5rem;font-weight:700;line-height:1}
.inquiry-success p{max-width:360px;color:var(--navy-900);font-size:var(--text-lg);font-weight:600;line-height:1.8}
.about-submit-button:disabled{cursor:not-allowed;opacity:.65}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner{
  background:linear-gradient(135deg,var(--navy-800),var(--navy-900));
  border-radius:var(--r-xl);padding:var(--s12) var(--s10);text-align:center;
}
.cta-banner h2{font-size:var(--text-3xl);font-weight:700;color:var(--white);margin-bottom:var(--s4)}
.cta-banner p{font-size:var(--text-lg);color:var(--slate-400);margin-bottom:var(--s6);max-width:560px;margin-left:auto;margin-right:auto}

/* ============================================================
   BENTO GRID (模块化网格)
   ============================================================ */
.bento-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s4)}
.bento-grid.col3{grid-template-columns:repeat(3,1fr)}
.bento-grid.col2{grid-template-columns:repeat(2,1fr)}
.bento-item{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);
  padding:var(--s6);transition:all var(--t-base);
}
.bento-item:hover{box-shadow:var(--shadow-md);border-color:var(--copper-300)}
.bento-item.span2{grid-column:span 2}
.bento-item.span3{grid-column:span 3}
.bento-item.span4{grid-column:span 4}
.bento-item.span2-row{grid-row:span 2}
.bento-item.dark{background:var(--navy-800);border-color:var(--navy-700);color:var(--white)}
.bento-item.dark h4{color:var(--white)}
.bento-item.dark p{color:var(--slate-400)}
.bento-item h4{font-size:var(--text-base);font-weight:700;color:var(--navy-800);margin-bottom:var(--s2)}
.bento-item p{font-size:var(--text-sm);color:var(--slate-600);line-height:1.6}

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline{position:relative;padding-left:var(--s10)}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:var(--slate-300)}
.timeline-item{position:relative;margin-bottom:var(--s6)}
.timeline-item::before{
  content:'';position:absolute;left:calc(-1 * var(--s10) + 10px);top:4px;
  width:12px;height:12px;border-radius:50%;background:var(--copper-500);border:2px solid var(--white);
}
.timeline-year{font-size:var(--text-sm);font-weight:700;color:var(--slate-500);margin-bottom:var(--s1)}
.timeline-title{font-size:var(--text-base);font-weight:700;color:var(--navy-800);margin-bottom:var(--s1)}
.timeline-desc{font-size:var(--text-sm);color:var(--slate-600)}

/* ============================================================
   SPEC TABLE (产品规格表)
   ============================================================ */
.spec-table{width:100%;border-collapse:collapse}
.spec-table th{
  width:180px;text-align:left;padding:var(--s3) var(--s5);
  background:var(--slate-100);font-size:var(--text-sm);font-weight:600;
  color:var(--navy-700);border-bottom:1px solid var(--slate-200);
  vertical-align:top;
}
.spec-table td{
  padding:var(--s3) var(--s5);font-size:var(--text-sm);color:var(--slate-700);
  border-bottom:1px solid var(--slate-200);
}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}

/* ============================================================
   SLA TABLE
   ============================================================ */
.sla-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--s4)}
.sla-card{
  background:var(--white);border:1px solid var(--slate-300);border-radius:var(--r-lg);
  padding:var(--s5);text-align:center;transition:all var(--t-base);
}
.sla-card:hover{box-shadow:var(--shadow-md);border-color:var(--copper-300)}
.sla-card-icon{font-size:2rem;margin-bottom:var(--s3)}
.sla-card h4{font-size:var(--text-sm);font-weight:700;color:var(--navy-800);margin-bottom:var(--s2)}
.sla-card p{font-size:var(--text-xs);color:var(--slate-500)}

/* ============================================================
   FILTER / SEARCH BAR
   ============================================================ */
.filter-bar{display:flex;gap:var(--s4);margin-bottom:var(--s8);flex-wrap:wrap;align-items:center}
.filter-bar .tabs{margin-bottom:0}
.search-input{
  padding:var(--s3) var(--s5);border:1px solid var(--slate-300);border-radius:var(--r-full);
  font-size:var(--text-sm);min-width:200px;transition:border-color var(--t-fast);
}
.search-input:focus{outline:none;border-color:var(--copper-500)}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  background:var(--navy-950);color:var(--slate-400);padding:var(--s16) 0 var(--s8);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--s10);margin-bottom:var(--s12)}
.footer-brand h3{font-size:var(--text-xl);font-weight:700;color:var(--white);margin-bottom:var(--s3)}
.footer-brand p{font-size:var(--text-sm);color:var(--slate-500);line-height:1.7}
.footer-col h4{font-size:var(--text-sm);font-weight:600;color:var(--white);margin-bottom:var(--s5)}
.footer-col a{display:block;font-size:var(--text-sm);color:var(--slate-500);margin-bottom:var(--s3);transition:color var(--t-fast)}
.footer-col a:hover{color:var(--copper-400)}
.footer-bottom{border-top:1px solid var(--navy-700);padding-top:var(--s6);display:flex;justify-content:space-between;font-size:var(--text-xs);color:var(--slate-600);flex-wrap:wrap;gap:var(--s4)}

/* --- Product detail overview --- */
.product-overview{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--s10);align-items:center;margin-bottom:var(--s12)}
.product-overview-media{aspect-ratio:1;display:flex;align-items:center;justify-content:center}
.product-overview-media img{width:100%;height:100%;object-fit:contain;padding:var(--s8)}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-layout{grid-template-columns:1fr}
  .about-overview,.about-timeline-layout{grid-template-columns:1fr}
  .about-overview-media{min-height:0;aspect-ratio:16/9}
  .about-overview-media img{min-height:0}
  .about-advantages{grid-template-columns:repeat(2,minmax(0,1fr))}
  .about-advantage-card,.about-advantage-card:nth-child(4){grid-column:span 1}
  .about-advantage-card:last-child{grid-column:1/-1}
  .bento-grid{grid-template-columns:repeat(2,1fr)}
  .bento-item.span2,.bento-item.span3,.bento-item.span4{grid-column:span 2}
  .media-grid,.factory-grid{grid-template-columns:1fr}
  .process-rail{grid-template-columns:repeat(3,1fr)}
}

@media (max-width:768px){
  :root{--header-h:64px}
  .header-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;max-height:calc(100vh - var(--header-h));overflow-y:auto;background:var(--navy-900);flex-direction:column;align-items:stretch;padding:var(--s4) var(--s6) var(--s8);gap:0;border-bottom:1px solid var(--navy-700)}
  .header-nav.open{display:flex}
  .header-logo .logo{width:32px;height:32px}
  .header-logo .logo-text{height:28px;}
  .mobile-menu-btn{display:flex}
  /* mobile nav rows */
  .header-nav>a,.header-nav .nav-item>a{padding:var(--s4) 0;border-bottom:1px solid rgba(255,255,255,.07);width:100%;justify-content:space-between}
  .header-nav>a::after,.header-nav .nav-item>a::after{display:none}
  .header-nav .nav-item{display:block;position:static}
  .nav-item>a .nav-caret{transition:transform var(--t-base)}
  .nav-item.open>a .nav-caret{transform:rotate(180deg)}
  /* accordion mega panel */
  .mega{position:static;top:auto;opacity:1;visibility:visible;transform:none;background:transparent;border:none;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;max-height:0;overflow:hidden;transition:max-height var(--t-base)}
  .nav-item.open .mega{max-height:1200px}
  .mega-inner{flex-direction:column;gap:var(--s5);padding:var(--s4) 0 var(--s5) var(--s4)}
  .mega-col{min-width:0;gap:var(--s2)}
  .mega-title{font-size:var(--text-base)}
  .product-overview{grid-template-columns:1fr;gap:var(--s8)}
  .product-overview-media{max-width:520px;width:100%;margin:0 auto}
  .features-grid{grid-template-columns:1fr}
  .about-hero .section-title{letter-spacing:.08em}
  .about-overview-copy>p{font-size:var(--text-base)}
  .about-overview-media{aspect-ratio:4/3}
  .about-advantages,.about-locations{grid-template-columns:1fr}
  .about-advantage-card,.about-advantage-card:nth-child(4),.about-advantage-card:last-child{grid-column:auto;min-height:0;display:grid;grid-template-columns:72px minmax(0,1fr);gap:var(--s4);align-items:start;padding:var(--s5)}
  .about-advantage-card img{width:72px;height:72px;margin-bottom:0}
  .about-location-card{min-height:0;padding:var(--s6)}
  .about-location-index{margin-bottom:var(--s4)}
  .about-timeline-layout{gap:var(--s8)}
  .product-grid{grid-template-columns:1fr}
  .test-flow{flex-direction:column;gap:var(--s8)}
  .test-flow::before{display:none}
  .test-step{max-width:100%;display:flex;align-items:center;gap:var(--s4);text-align:left}
  .test-step-num{margin:0}
  .test-step-detail{position:static;opacity:1;visibility:visible;width:100%;transform:none;margin-top:var(--s3);box-shadow:none;border:1px solid var(--slate-200)}
  .checklist-categories{grid-template-columns:1fr}
  .inquiry-bar{flex-direction:column;text-align:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .form-row{grid-template-columns:1fr}
  .section{padding:var(--s12) 0}
  .section-title{font-size:var(--text-2xl)}
  .section-head{margin-bottom:var(--s8)}
  .section-head-top{gap:var(--s3)}
  .section-head .section-title{font-size:var(--text-3xl)}
  .section-more{font-size:var(--text-sm)}
  .bento-grid{grid-template-columns:1fr}
  .bento-item.span2,.bento-item.span3,.bento-item.span4{grid-column:span 1}
  .stats-row{gap:var(--s3)}
  .stat-item{padding:var(--s3) var(--s5)}
  .stat-value{font-size:var(--text-2xl)}
  .news-grid{grid-template-columns:1fr}
  .equipment-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .process-rail{grid-template-columns:1fr}
  .image-mosaic{grid-template-columns:1fr}
}

@media (max-width:480px){
  .container{padding:0 var(--s4)}
  .header-logo .logo{width:32px;height:32px}
  .header-logo .logo-text{height:28px;}
  .header-logo .brand-copy span{display:none}
  .header-logo .brand-copy strong{font-size:0.875rem}
  .stats-row{flex-direction:column}
  .about-stats{grid-template-columns:1fr}
  .about-stat{min-height:88px}
  .about-overview-media{aspect-ratio:1}
  .about-overview-media figcaption{left:var(--s3);right:var(--s3);bottom:var(--s3)}
  .about-advantage-card,.about-advantage-card:nth-child(4),.about-advantage-card:last-child{grid-template-columns:60px minmax(0,1fr);gap:var(--s3)}
  .about-advantage-card img{width:60px;height:60px}
  .section-title{font-size:var(--text-xl)}
  .section-head .section-title{font-size:var(--text-2xl);padding-left:var(--s4)}
  .section-head .section-title::before{width:4px}
  .section-head .section-subtitle{padding-left:calc(var(--s4) + 4px)}
  .section-more{font-size:var(--text-xs)}
  .bento-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr}
  .contact-form{padding:var(--s5)}
  .inquiry-success{min-height:360px;padding:var(--s5)}
  .inquiry-success-icon{width:68px;height:68px;font-size:2rem}
  .inquiry-success p{font-size:var(--text-base)}
  .page-hero .section-title{font-size:var(--text-2xl)}
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
/* Scroll reveal — only active once JS adds .js-anim, so content stays visible without JS */
.js-anim .fade-up{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.js-anim .fade-up.visible{opacity:1;transform:none}

/* Reduce motion */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .js-anim .fade-up{opacity:1;transform:none}
}

/* ============================================================
   PRINT
   ============================================================ */
@media print{
  .site-header,.site-footer,.cta-banner,.inquiry-bar{display:none}
  .page-hero{padding:var(--s8) 0}
}