@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Oswald:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');:root{--color-primary:#0A1F3D;--color-primary-light:#1A3A6B;--color-primary-dark:#061226;--color-accent:#FF6B1A;--color-accent-light:#FF8C47;--color-accent-dark:#E55A0E;--color-secondary:#2C3E50;--color-secondary-light:#5A6C7D;--color-bg-primary:#FFFFFF;--color-bg-secondary:#F5F7FA;--color-bg-tertiary:#EAECEF;--color-bg-dark:#0A1F3D;--color-text-primary:#1A1A1A;--color-text-secondary:#4A4A4A;--color-text-tertiary:#8A8A8A;--color-text-inverse:#FFFFFF;--color-success:#2ECC71;--color-warning:#F39C12;--color-danger:#E74C3C;--gradient-primary:linear-gradient(135deg,#0A1F3D 0%,#1A3A6B 100%);--gradient-accent:linear-gradient(135deg,#FF6B1A 0%,#FF8C47 100%);--gradient-hero:linear-gradient(135deg,#061226 0%,#0A1F3D 50%,#1A3A6B 100%);--gradient-hero-overlay:linear-gradient(180deg,rgba(6,18,38,0.7) 0%,rgba(10,31,61,0.85) 100%);--shadow-sm:0 2px 4px rgba(10,31,61,0.08);--shadow-md:0 4px 12px rgba(10,31,61,0.12);--shadow-lg:0 8px 24px rgba(10,31,61,0.16);--shadow-xl:0 16px 48px rgba(10,31,61,0.20);--shadow-orange:0 4px 16px rgba(255,107,26,0.35);--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--space-4xl:96px;--space-5xl:128px;--container-max:1280px;--container-padding:24px;--grid-gutter:24px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-2xl:24px;--radius-full:9999px;--transition-fast:0.2s ease;--transition-base:0.3s ease;--transition-slow:0.5s cubic-bezier(0.25,0.46,0.45,0.94);--font-zh:"PingFang SC","Microsoft YaHei","Helvetica Neue","Hiragino Sans GB","WenQuanYi Micro Hei",sans-serif;--font-en:"Inter","Roboto","Segoe UI","Helvetica Neue",Arial,sans-serif;--font-heading-en:"Oswald","Inter",sans-serif;--font-mono:"JetBrains Mono","Fira Code","Consolas",monospace;--header-height:80px;--header-height-scrolled:60px;--bp-sm:640px;--bp-md:768px;--bp-lg:1024px;--bp-xl:1280px;}*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}body{font-family:var(--font-en);font-size:16px;line-height:1.6;color:var(--color-text-secondary);background-color:var(--color-bg-primary);overflow-x:hidden;}html[lang="zh-CN"] body,html[lang="zh"] body{font-family:var(--font-zh);}.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--container-padding);width:100%;}.container--narrow{max-width:960px;}.container--wide{max-width:1400px;}h1,h2,h3,h4,h5,h6{color:var(--color-text-primary);font-weight:700;line-height:1.3;margin-bottom:var(--space-md);}h1{font-size:3rem;}h2{font-size:2.25rem;}h3{font-size:1.75rem;}h4{font-size:1.375rem;}h5{font-size:1.125rem;}p{margin-bottom:var(--space-md);}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast);}a:hover{color:var(--color-accent-light);}.text-center{text-align:center;}.text-left{text-align:left;}.text-right{text-align:right;}.text-primary{color:var(--color-text-primary);}.text-secondary{color:var(--color-text-secondary);}.text-tertiary{color:var(--color-text-tertiary);}.text-accent{color:var(--color-accent);}.text-inverse{color:var(--color-text-inverse);}.bg-primary{background-color:var(--color-bg-primary);}.bg-secondary{background-color:var(--color-bg-secondary);}.bg-dark{background-color:var(--color-bg-dark);}.mb-0{margin-bottom:0;}.mb-sm{margin-bottom:var(--space-sm);}.mb-md{margin-bottom:var(--space-md);}.mb-lg{margin-bottom:var(--space-lg);}.mb-xl{margin-bottom:var(--space-xl);}.mb-2xl{margin-bottom:var(--space-2xl);}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}.section{padding:var(--space-4xl) 0;position:relative;}.section--sm{padding:var(--space-3xl) 0;}.section--lg{padding:var(--space-5xl) 0;}.section__header{text-align:center;margin-bottom:var(--space-3xl);}.section__title{font-weight:800;margin-bottom:var(--space-sm);position:relative;display:inline-block;}.section__title::after{content:'';display:block;width:60px;height:4px;background:var(--gradient-accent);border-radius:var(--radius-full);margin:var(--space-md) auto 0;}.section__subtitle{font-size:1.125rem;color:var(--color-text-tertiary);max-width:600px;margin:0 auto;font-weight:400;}.bg-dark .section__title,.section--dark .section__title{color:var(--color-text-inverse);}.bg-dark .section__subtitle,.section--dark .section__subtitle{color:rgba(255,255,255,0.6);}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:14px 32px;font-size:1rem;font-weight:600;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all var(--transition-base);white-space:nowrap;position:relative;overflow:hidden;text-decoration:none;line-height:1;}.btn::after{content:'';position:absolute;inset:0;background:radial-gradient(circle,rgba(255,255,255,0.3) 0%,transparent 70%);opacity:0;transition:opacity var(--transition-fast);}.btn:hover::after{opacity:1;}.btn--primary{background:var(--gradient-accent);color:#FFFFFF;box-shadow:var(--shadow-orange);}.btn--primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,107,26,0.45);color:#FFFFFF;}.btn--secondary{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary);}.btn--secondary:hover{background:var(--color-primary);color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--shadow-md);}.btn--ghost{background:transparent;color:#FFFFFF;border:1px solid rgba(255,255,255,0.3);}.btn--ghost:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.6);color:#FFFFFF;}.btn--white{background:#FFFFFF;color:var(--color-primary);border:2px solid #FFFFFF;box-shadow:var(--shadow-md);}.btn--white:hover{background:transparent;color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--shadow-lg);}.btn--lg{padding:16px 40px;font-size:1.125rem;}.btn--sm{padding:10px 20px;font-size:0.875rem;}.btn--block{width:100%;}.badge{display:inline-flex;align-items:center;padding:4px 12px;font-size:0.75rem;font-weight:600;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:0.5px;}.badge--accent{background:var(--gradient-accent);color:#FFFFFF;}.badge--primary{background:var(--color-primary);color:#FFFFFF;}.badge--outline{background:transparent;border:1px solid var(--color-primary);color:var(--color-primary);}.badge--pp{background:#DBEAFE;color:#1E40AF;}.badge--abs{background:#EDE9FE;color:#6D28D9;}.breadcrumb{display:flex;align-items:center;gap:var(--space-sm);font-size:0.875rem;color:var(--color-text-tertiary);padding:var(--space-md) 0;flex-wrap:wrap;}.breadcrumb a{color:var(--color-text-tertiary);}.breadcrumb a:hover{color:var(--color-accent);}.breadcrumb__separator{color:var(--color-text-tertiary);}.breadcrumb__current{color:var(--color-text-primary);font-weight:500;}.page-banner{background:var(--gradient-primary);padding:var(--space-4xl) 0;text-align:center;position:relative;overflow:hidden;}.page-banner::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(255,107,26,0.15) 0%,transparent 70%);}.page-banner::after{content:'';position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(26,58,107,0.3) 0%,transparent 70%);}.page-banner__title{color:var(--color-text-inverse);font-size:2.5rem;font-weight:800;margin-bottom:var(--space-md);position:relative;z-index:1;}.page-banner__subtitle{color:rgba(255,255,255,0.7);font-size:1.125rem;max-width:600px;margin:0 auto;position:relative;z-index:1;}.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;border-radius:var(--radius-full);background:var(--gradient-accent);color:#FFFFFF;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.25rem;box-shadow:var(--shadow-lg);opacity:0;transform:translateY(20px);pointer-events:none;transition:all var(--transition-base);z-index:999;}.back-to-top.visible{opacity:1;transform:translateY(0);pointer-events:auto;}.back-to-top:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);}::-webkit-scrollbar{width:8px;}::-webkit-scrollbar-track{background:var(--color-bg-secondary);}::-webkit-scrollbar-thumb{background:var(--color-secondary-light);border-radius:var(--radius-full);}::-webkit-scrollbar-thumb:hover{background:var(--color-secondary);}.page-loader{position:fixed;inset:0;background:var(--color-bg-dark);display:flex;align-items:center;justify-content:center;z-index:10000;transition:opacity 0.5s ease,visibility 0.5s ease;}.page-loader.hidden{opacity:0;visibility:hidden;}.page-loader__logo{font-size:2rem;font-weight:800;color:#FFFFFF;animation:pulseLogo 1.5s ease-in-out infinite;letter-spacing:4px;}@keyframes pulseLogo{0%,100%{opacity:1;transform:scale(1);}50%{opacity:0.6;transform:scale(0.95);}}.page-loader__bar{position:absolute;bottom:0;left:0;height:3px;background:var(--gradient-accent);width:0%;animation:loadingBar 1.5s ease forwards;}@keyframes loadingBar{0%{width:0%;}50%{width:70%;}100%{width:100%;}}[data-aos]{opacity:1 !important;transform:none !important;transition:opacity 0.6s ease,transform 0.6s ease !important;}[data-aos].aos-animate{opacity:1 !important;transform:none !important;}