/*
  Lingze Power - shared static CSS.
  This file provides utility classes and common page components used by the static HTML pages.
*/

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;font-size:16px;scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;background:#0a0a0f;color:#fff;overflow-x:hidden}
img,picture,video,canvas,svg{display:block;max-width:100%}
input,button,textarea,select{font:inherit}
p{margin:0}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{cursor:pointer;border:none;background:none}

/* CSS variables */
:root{--teal:rgb(74,156,184);--teal-10:rgba(74,156,184,0.1);--teal-20:rgba(74,156,184,0.2);--teal-30:rgba(74,156,184,0.3);--white-10:rgba(255,255,255,0.1);--white-03:rgba(255,255,255,0.03);--white-05:rgba(255,255,255,0.05);--white-50:rgba(255,255,255,0.5);--white-60:rgba(255,255,255,0.6);--white-70:rgba(255,255,255,0.7);--white-78:rgba(255,255,255,0.78);--white-80:rgba(255,255,255,0.8);--bg-dark:#0a0a0f;--bg-light:#f5f5f7}

/* Layout utilities */
.relative{position:relative}
.absolute{position:absolute}
.fixed{position:fixed}
.inset-0{top:0;right:0;bottom:0;left:0}
.top-0{top:0}
.left-0{left:0}
.left-1\/2{left:50%}
.right-0{right:0}
.bottom-2{bottom:0.5rem}
.bottom-8{bottom:2rem}
.z-10{z-index:10}
.z-50{z-index:50}
.block{display:block}
.flex{display:flex}
.inline-flex{display:inline-flex}
.hidden{display:none}
.grid{display:grid}
.flex-col{flex-direction:column}
.flex-wrap{flex-wrap:wrap}
.flex-shrink-0{flex-shrink:0}
.shrink-0{flex-shrink:0}
.items-center{align-items:center}
.items-start{align-items:flex-start}
.justify-center{justify-content:center}
.justify-between{justify-content:space-between}
.grid-cols-1{grid-template-columns:repeat(1,1fr)}
.grid-cols-2{grid-template-columns:repeat(2,1fr)}
.grid-cols-3{grid-template-columns:repeat(3,1fr)}
.grid-cols-4{grid-template-columns:repeat(4,1fr)}
.min-w-0{min-width:0}
.w-full{width:100%}
.w-auto{width:auto}
.w-max{width:max-content}
.w-1{width:0.25rem}
.w-5{width:1.25rem}
.w-6{width:1.5rem}
.w-\[140px\]{width:140px}
.h-full{height:100%}
.h-2{height:0.5rem}
.h-5{height:1.25rem}
.h-8{height:2rem}
.h-10{height:2.5rem}
.h-12{height:3rem}
.h-16{height:4rem}
.min-h-\[72vh\]{min-height:72vh}
.min-h-\[74svh\]{min-height:74svh}
.max-w-3xl{max-width:48rem}
.max-w-4xl{max-width:56rem}
.max-w-5xl{max-width:64rem}
.max-w-7xl{max-width:80rem}
.max-w-md{max-width:28rem}
.mx-auto{margin-left:auto;margin-right:auto}
.mt-0\.5{margin-top:0.125rem}
.mt-4{margin-top:1rem}
.mt-6{margin-top:1.5rem}
.mb-1{margin-bottom:0.25rem}
.mb-2{margin-bottom:0.5rem}
.mb-3{margin-bottom:0.75rem}
.mb-4{margin-bottom:1rem}
.mb-6{margin-bottom:1.5rem}
.mb-8{margin-bottom:2rem}
.mb-10{margin-bottom:2.5rem}
.mb-12{margin-bottom:3rem}
.mb-16{margin-bottom:4rem}
.gap-2{gap:0.5rem}
.gap-3{gap:0.75rem}
.gap-4{gap:1rem}
.gap-5{gap:1.25rem}
.gap-6{gap:1.5rem}
.gap-8{gap:2rem}
.gap-12{gap:3rem}
.p-2{padding:0.5rem}
.p-6{padding:1.5rem}
.p-8{padding:2rem}
.px-2{padding-left:0.5rem;padding-right:0.5rem}
.px-3{padding-left:0.75rem;padding-right:0.75rem}
.px-4{padding-left:1rem;padding-right:1rem}
.px-8{padding-left:2rem;padding-right:2rem}
.py-1{padding-top:0.25rem;padding-bottom:0.25rem}
.py-2{padding-top:0.5rem;padding-bottom:0.5rem}
.py-3{padding-top:0.75rem;padding-bottom:0.75rem}
.py-12{padding-top:3rem;padding-bottom:3rem}
.py-14{padding-top:3.5rem;padding-bottom:3.5rem}
.py-20{padding-top:5rem;padding-bottom:5rem}
.py-24{padding-top:6rem;padding-bottom:6rem}
.pt-2{padding-top:0.5rem}
.space-y-1>*+*{margin-top:0.25rem}
.space-y-2>*+*{margin-top:0.5rem}
.space-y-3>*+*{margin-top:0.75rem}
.space-y-8>*+*{margin-top:2rem}
.space-y-12>*+*{margin-top:3rem}
.overflow-hidden{overflow:hidden}
.pointer-events-none{pointer-events:none}
.whitespace-nowrap{white-space:nowrap}
.object-contain{object-fit:contain}
.object-cover{object-fit:cover}
.object-\[52\%_center\]{object-position:52% center}
.-translate-x-1\/2{transform:translateX(-50%)}

/* Typography utilities */
.text-center{text-align:center}
.text-left{text-align:left}
.text-right{text-align:right}
.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.text-balance{text-wrap:balance}
.uppercase{text-transform:uppercase}
.tracking-wide{letter-spacing:0.025em}
.tracking-wider{letter-spacing:0.05em}
.tracking-\[0\.12em\]{letter-spacing:0.12em}
.tracking-\[0\.22em\]{letter-spacing:0.22em}
.leading-tight{line-height:1.25}
.leading-relaxed{line-height:1.625}
.font-light{font-weight:300}
.font-medium{font-weight:500}
.font-semibold{font-weight:600}
.font-bold{font-weight:700}
.text-xs{font-size:0.75rem}
.text-sm{font-size:0.875rem}
.text-base{font-size:1rem}
.text-lg{font-size:1.125rem}
.text-xl{font-size:1.25rem}
.text-2xl{font-size:1.5rem}
.text-3xl{font-size:1.875rem}
.text-4xl{font-size:2.25rem}
.text-\[9px\]{font-size:9px}
.text-\[11px\]{font-size:11px}
.text-\[13px\]{font-size:13px}
.text-\[64px\]{font-size:64px}

/* Color utilities */
.text-white{color:#fff}
.text-white\/50{color:rgba(255,255,255,0.5)}
.text-white\/60{color:rgba(255,255,255,0.6)}
.text-white\/70{color:rgba(255,255,255,0.7)}
.text-white\/78{color:rgba(255,255,255,0.78)}
.text-white\/\[0\.03\]{color:rgba(255,255,255,0.03)}
.text-\[#0a0a0f\]{color:#0a0a0f}
.text-\[#1a1a1a\]{color:#1a1a1a}
.text-\[#666\]{color:#666}
.text-teal{color:rgb(74,156,184)!important}
.text-primary{color:rgb(74,156,184)}
.text-muted-foreground{color:rgba(255,255,255,0.6)}
.text-foreground{color:#fff}
.bg-\[#0a0a0f\]{background:#0a0a0f}
.bg-\[#0a0a0f\]\/50{background:rgba(10,10,15,0.5)}
.bg-\[#f5f5f7\]{background:#f5f5f7}
.bg-\[rgba\(10\,10\,15\,0\.95\)\]{background:rgba(10,10,15,0.95)}
.bg-white{background:#fff}
.bg-white\/80{background:rgba(255,255,255,0.8)}
.bg-white\/\[0\.03\]{background:rgba(255,255,255,0.03)}
.bg-teal{background:rgb(74,156,184)!important}
.bg-background{background:#0a0a0f}
.border{border:1px solid var(--white-10)}
.border-t{border-top:1px solid var(--white-10)}
.border-white\/10{border-color:rgba(255,255,255,0.1)}
.border-white\/30{border-color:rgba(255,255,255,0.3)}
.rounded{border-radius:0.25rem}
.rounded-full{border-radius:9999px}
.rounded-lg{border-radius:0.5rem}
.rounded-xl{border-radius:0.75rem}
.rounded-2xl{border-radius:1rem}

/* Effects */
.shadow-sm{box-shadow:0 1px 2px rgba(0,0,0,0.05)}
.shadow-lg{box-shadow:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1)}
.backdrop-blur-xl{backdrop-filter:blur(24px)}
.transition-all{transition:all 0.3s ease}
.transition-colors{transition:color 0.3s ease,background-color 0.3s ease,border-color 0.3s ease}
.transition-shadow{transition:box-shadow 0.3s ease}
.duration-300{transition-duration:0.3s}

/* Hover states */
.hover\:bg-teal:hover{background:rgb(74,156,184)!important}
.hover\:bg-white:hover{background:#fff}
.hover\:bg-white\/5:hover{background:rgba(255,255,255,0.05)}
.hover\:text-teal:hover{color:rgb(74,156,184)!important}
.hover\:text-\[#0a0a0f\]:hover{color:#0a0a0f}
.hover\:text-white:hover{color:#fff}
.hover\:shadow-md:hover{box-shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1)}

/* Animations */
@keyframes fade-up{0%{opacity:0;transform:translateY(30px)}100%{opacity:1;transform:translateY(0)}}
.animate-fade-up{animation:fade-up 0.6s ease-out forwards;opacity:0}
@keyframes bounce{0%,to{transform:translateY(-25%);animation-timing-function:cubic-bezier(.8,0,1,1)}50%{transform:translateY(0);animation-timing-function:cubic-bezier(0,0,.2,1)}}
.animate-bounce{animation:bounce 1s infinite}

/* Containers */
.container{margin:0 auto;padding:0 1rem}
.container-custom{margin:0 auto;max-width:1200px;padding:0 1rem}

/* Header */
.header{position:fixed;top:0;left:0;right:0;z-index:50;transition:all 0.3s}
.header.scrolled{background:rgba(10,10,15,0.95);backdrop-filter:blur(24px);box-shadow:0 4px 20px rgba(0,0,0,0.3)}

/* Mobile menu */
.mobile-nav{position:fixed;top:72px;left:0;right:0;z-index:40;background:rgba(10,10,15,0.96);backdrop-filter:blur(24px);border-top:1px solid var(--white-10);padding:1rem;max-height:0;overflow:hidden;opacity:0;transform:translateY(-0.5rem);transition:all 0.3s;pointer-events:none}
.mobile-nav.open{max-height:400px;opacity:1;transform:translateY(0);pointer-events:auto}

/* Page hero */
.page-hero{position:relative;min-height:46vh;display:flex;align-items:center;justify-content:center;overflow:hidden;padding-top:72px}
.hero-bg-img{position:absolute;inset:0}
.hero-bg-img img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(10,10,15,0.4),rgba(10,10,15,0.8))}
.hero-content{position:relative;z-index:10;text-align:center;padding:2rem}
.page-hero-title{font-size:2.5rem;font-weight:bold;color:#fff;margin-bottom:1rem;letter-spacing:0.05em}
.page-hero-desc{color:rgba(255,255,255,0.8);font-size:1.125rem;max-width:600px;margin:0 auto}

/* Feature card */
.feature-card{border:1px solid var(--white-10);background:var(--white-03);border-radius:0.5rem;padding:1.5rem;transition:all 0.3s}
.feature-card:hover{border-color:var(--teal-30);background:var(--white-05)}

/* Section title */
.section-title{font-size:1.875rem;font-weight:bold;color:#fff;margin-bottom:1rem;text-align:center}
.section-desc{color:var(--white-60);text-align:center;font-size:1rem}

/* News card */
.news-card{display:flex;gap:1.5rem;padding:1.5rem;border:1px solid var(--white-10);background:var(--white-03);border-radius:0.5rem;margin-bottom:1rem;transition:all 0.3s}
.news-card:hover{border-color:var(--teal-30)}
.news-card-img{width:200px;height:120px;object-fit:cover;border-radius:0.375rem;flex-shrink:0}
.news-card-date{color:var(--teal);font-size:0.875rem;margin-bottom:0.5rem}
.news-card-title{color:#fff;font-size:1.125rem;font-weight:600;line-height:1.5}

/* Product card */
.product-card{border:1px solid var(--white-10);background:var(--white-03);border-radius:0.5rem;overflow:hidden;transition:all 0.3s}
.product-card:hover{border-color:var(--teal-30);transform:translateY(-4px)}
.product-card-img{width:100%;height:200px;object-fit:cover}
.product-card-body{padding:1.5rem}
.product-card-title{color:#fff;font-size:1.25rem;font-weight:bold;margin:0.5rem 0}
.product-card-desc{color:var(--white-60);font-size:0.875rem;line-height:1.6;margin:1rem 0}

/* Feature tags */
.feature-tags{display:flex;flex-wrap:wrap;gap:0.5rem;margin-top:1rem}
.feature-tag{padding:0.25rem 0.75rem;border:1px solid var(--teal-30);background:var(--teal-10);color:var(--teal);border-radius:9999px;font-size:0.75rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:0.5rem 1.5rem;border-radius:0.5rem;font-weight:500;transition:all 0.3s;cursor:pointer}
.btn-primary{background:var(--teal);color:#0a0a0f}
.btn-primary:hover{background:rgb(90,173,207)}

/* Spec table */
.spec-row{display:flex;justify-content:space-between;padding:0.75rem 0;border-bottom:1px solid var(--white-10)}
.spec-label{color:var(--white-60);font-weight:500}
.spec-value{color:#fff;text-align:right}
.spec-section-title{color:var(--teal);font-size:1.25rem;font-weight:bold;margin:2rem 0 1rem;text-align:center}

/* Scene card */
.scene-card{position:relative;overflow:hidden;border-radius:0.5rem}
.scene-card img{width:100%;height:200px;object-fit:cover;transition:transform 0.3s}
.scene-card:hover img{transform:scale(1.05)}
.scene-card-label{position:absolute;bottom:1rem;left:50%;transform:translateX(-50%);background:rgba(10,10,15,0.8);color:#fff;padding:0.5rem 1.5rem;border-radius:0.375rem;font-weight:500}

/* Inline block and aspect ratio */
.inline-block{display:inline-block}
.aspect-video{aspect-ratio:16/9}

/* Scrollbar */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.15);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.25)}
::selection{background:rgba(74,156,184,0.3);color:#fff}

/* Responsive - SM (640px+) */
@media(min-width:640px){
  .sm\:block{display:block}
  .sm\:gap-3{gap:0.75rem}
  .sm\:gap-6{gap:1.5rem}
  .sm\:h-9{height:2.25rem}
  .sm\:w-24{width:6rem}
  .sm\:w-auto{width:auto}
  .sm\:min-h-screen{min-height:100vh}
  .sm\:py-16{padding-top:4rem;padding-bottom:4rem}
  .sm\:py-24{padding-top:6rem;padding-bottom:6rem}
  .sm\:mb-10{margin-bottom:2.5rem}
  .sm\:mb-12{margin-bottom:3rem}
  .sm\:object-cover{object-fit:cover}
  .sm\:text-xs{font-size:0.75rem}
  .sm\:text-sm{font-size:0.875rem}
  .sm\:text-base{font-size:1rem}
  .sm\:text-lg{font-size:1.125rem}
  .sm\:text-5xl{font-size:3rem}
  .sm\:text-\[10px\]{font-size:10px}
  .sm\:tracking-\[0\.2em\]{letter-spacing:0.2em}
  .sm\:tracking-wider{letter-spacing:0.05em}
  .page-hero{min-height:54vh}
  .section-title{font-size:2.25rem}
  .page-hero-title{font-size:3rem}
}

/* Responsive - MD (768px+) */
@media(min-width:768px){
  .md\:grid-cols-2{grid-template-columns:repeat(2,1fr)}
  .md\:text-left{text-align:left}
  .md\:text-right{text-align:right}
  .md\:justify-end{justify-content:flex-end}
  .container-custom{padding-left:1.5rem;padding-right:1.5rem}
}

/* Responsive - LG (1024px+) */
@media(min-width:1024px){
  .lg\:block{display:block}
  .lg\:flex{display:flex}
  .lg\:hidden{display:none}
  .lg\:flex-row{flex-direction:row}
  .lg\:gap-12{gap:3rem}
  .lg\:gap-7{gap:1.75rem}
  .lg\:w-3\/5{width:60%}
  .lg\:w-2\/5{width:40%}
  .lg\:max-w-none{max-width:none}
  .lg\:min-h-\[72vh\]{min-height:72vh}
  .lg\:min-h-\[92vh\]{min-height:92vh}
  .lg\:mt-0{margin-top:0}
  .lg\:pl-12{padding-left:3rem}
  .lg\:py-0{padding-top:0;padding-bottom:0}
  .lg\:py-24{padding-top:6rem;padding-bottom:6rem}
  .lg\:text-left{text-align:left}
  .lg\:text-sm{font-size:0.875rem}
  .lg\:text-3xl{font-size:1.875rem}
  .lg\:text-4xl{font-size:2.25rem}
  .lg\:text-6xl{font-size:3.75rem}
  .lg\:text-\[200px\]{font-size:200px}
  .lg\:tracking-\[0\.3em\]{letter-spacing:0.3em}
  .container-custom{padding-left:2rem;padding-right:2rem}
  .page-hero{min-height:60vh}
}

/* Responsive - XL (1280px+) */
@media(min-width:1280px){
  .xl\:gap-7{gap:1.75rem}
  .xl\:text-sm{font-size:0.875rem}
}

/* Responsive fallbacks */
@media(max-width:1023px){
  .lg\:grid-cols-2,.lg\:grid-cols-3,.lg\:grid-cols-4,.lg\:grid-cols-5,.lg\:grid-cols-6,.lg\:grid-cols-7{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:767px){
  .grid-cols-2,.grid-cols-3,.grid-cols-4{grid-template-columns:repeat(1,1fr)}
  .sm\:grid-cols-4,.sm\:grid-cols-5,.sm\:grid-cols-7{grid-template-columns:repeat(3,1fr)}
}

/* Scroll reveal */
.animate-on-scroll{opacity:1}
.animate-on-scroll.animate-fade-scale{opacity:1}

/* Group hover helper */
.group:hover .group-hover\:bg-teal\/20{background:var(--teal-20)}