*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:'Helvetica Neue',Arial,'PingFang SC','Microsoft YaHei',sans-serif;font-size:16px;line-height:1.8;color:#F0F0F0;background-color:#0A0A0A;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{border:none;background:none;cursor:pointer;font:inherit;color:inherit}
:focus-visible{outline:2px solid #00BFFF;outline-offset:2px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}}

:root{
  --color-primary-red:#E60012;
  --color-primary-black:#0A0A0A;
  --color-secondary-gold:#FFD700;
  --color-accent-blue:#00BFFF;
  --color-dark-surface:#1A1A1A;
  --color-medium-surface:#2C2C2C;
  --color-light-text:#F0F0F0;
  --color-muted-text:#999999;
  --font-heading:Impact,'Arial Black',sans-serif;
  --font-body:'Helvetica Neue',Arial,'PingFang SC','Microsoft YaHei',sans-serif;
  --font-accent:'Courier New',monospace;
  --container-max:1280px;
  --header-height:80px;
  --space-xs:4px;
  --space-sm:8px;
  --space-md:16px;
  --space-lg:32px;
  --space-xl:64px;
  --space-2xl:80px;
  --radius-sm:4px;
  --radius-md:8px;
  --radius-lg:16px;
  --transition-fast:200ms ease;
  --transition-base:300ms ease;
  --glass-bg:rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.08);
  --z-header:1000;
  --z-nav-overlay:999;
  --z-progress:1100;
  --z-backtop:1050;
  --z-skip:1200
}

.container{width:100%;max-width:var(--container-max);margin:0 auto;padding-left:var(--space-lg);padding-right:var(--space-lg)}
@media(max-width:480px){.container{padding-left:var(--space-md);padding-right:var(--space-md)}}

.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}
.skip-link{position:fixed;top:-100%;left:16px;padding:12px 24px;background:var(--color-primary-red);color:#fff;z-index:var(--z-skip);font-weight:700;font-family:var(--font-heading);font-size:18px;border-radius:0 0 var(--radius-sm) var(--radius-sm);transition:top var(--transition-fast)}
.skip-link:focus{top:0}

.site-header{position:sticky;top:0;z-index:var(--z-header);background:linear-gradient(180deg,#0A0A0A 0%,rgba(10,10,10,0.95) 100%);backdrop-filter:blur(8px);border-bottom:1px solid rgba(230,0,18,0.25);height:var(--header-height)}
.site-header__inner{display:flex;align-items:center;height:100%;gap:var(--space-lg);position:relative}
.site-header__brand{flex-shrink:0}
.site-header__logo{display:flex;align-items:baseline;font-family:var(--font-heading);font-size:28px;letter-spacing:1px;color:var(--color-light-text);transform:skewX(-6deg);transition:transform var(--transition-fast)}
.site-header__logo:hover{transform:skewX(-6deg) scale(1.02)}
.site-header__logo-text{color:var(--color-light-text)}
.site-header__logo-accent{color:var(--color-primary-red);margin-left:2px}
.site-header__cta{margin-left:auto;flex-shrink:0}
.site-header__cta .btn{font-size:14px;padding:10px 22px}

.site-nav{flex:1;display:flex;justify-content:center}
.site-nav__list{display:flex;align-items:center;gap:var(--space-xs)}
.site-nav__item{position:relative}
.site-nav__link{display:block;padding:8px 16px;font-family:var(--font-heading);font-size:15px;color:var(--color-light-text);letter-spacing:0.5px;position:relative;transition:color var(--transition-fast);white-space:nowrap}
.site-nav__link::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--color-primary-red);transition:width var(--transition-base)}
.site-nav__link:hover{color:var(--color-primary-red)}
.site-nav__link:hover::after{width:60%}
.site-nav__link[aria-current="page"]{color:var(--color-primary-red)}
.site-nav__link[aria-current="page"]::after{width:60%;background:linear-gradient(90deg,var(--color-primary-red),var(--color-secondary-gold))}
.site-nav__link[aria-current="page"]::before{content:'';position:absolute;top:50%;left:-4px;width:4px;height:4px;border-radius:50%;background:var(--color-secondary-gold);transform:translateY(-50%)}

.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;padding:8px;gap:5px;z-index:calc(var(--z-nav-overlay)+2);margin-left:auto;position:relative}
.nav-toggle__bar{display:block;width:24px;height:2px;background:var(--color-light-text);border-radius:2px;transition:transform var(--transition-base),opacity var(--transition-base);transform-origin:center}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media(max-width:900px){
  .nav-toggle{display:flex}
  .site-header__cta{display:none}
  .site-nav{position:fixed;top:0;left:0;width:100%;height:100vh;height:100dvh;background:rgba(10,10,10,0.97);backdrop-filter:blur(20px);z-index:var(--z-nav-overlay);display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;transition:opacity var(--transition-base),visibility var(--transition-base)}
  .site-nav[data-open]{opacity:1;visibility:visible}
  .site-nav__list{flex-direction:column;gap:var(--space-md);text-align:center}
  .site-nav__link{font-size:28px;padding:12px 24px}
  .site-nav__link::after{height:3px}
  .site-nav__link[aria-current="page"]::before{display:none}
}

@media(max-width:480px){
  .site-header__logo{font-size:22px}
  .site-header{height:64px}
  :root{--header-height:64px}
  .site-nav__link{font-size:24px}
}

.site-footer{background:var(--color-primary-black);border-top:2px solid var(--color-primary-red);padding:var(--space-xl) 0 var(--space-lg);margin-top:var(--space-2xl)}
.site-footer__inner{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-lg) var(--space-xl)}
.site-footer__brand{grid-column:1/2}
.site-footer__logo{font-family:var(--font-heading);font-size:24px;color:var(--color-light-text);transform:skewX(-4deg);display:inline-block}
.site-footer__logo-accent{color:var(--color-primary-red)}
.site-footer__tagline{color:var(--color-muted-text);font-size:14px;margin-top:var(--space-sm);font-style:italic;letter-spacing:1px}
.site-footer__links{grid-column:2/3;justify-self:end;align-self:start}
.footer-links{display:flex;flex-wrap:wrap;gap:var(--space-md) var(--space-lg)}
.footer-links__item{color:var(--color-muted-text);font-size:14px;transition:color var(--transition-fast);position:relative;padding-left:12px}
.footer-links__item::before{content:'›';position:absolute;left:0;color:var(--color-primary-red);font-weight:700}
.footer-links__item:hover{color:var(--color-primary-red)}
.site-footer__contact{grid-column:1/3;border-top:1px solid rgba(255,255,255,0.06);padding-top:var(--space-lg);display:grid;grid-template-columns:1fr 1fr;gap:var(--space-sm) var(--space-lg)}
.footer-contact__item{color:var(--color-muted-text);font-size:13px;line-height:1.6;padding-left:16px;position:relative}
.footer-contact__item::before{content:'◆';position:absolute;left:0;color:var(--color-secondary-gold);font-size:8px;top:4px}
.footer-contact__note{grid-column:1/3;color:var(--color-muted-text);font-size:12px;opacity:0.7;margin-top:var(--space-sm);font-style:italic}
.site-footer__bottom{grid-column:1/3;border-top:1px solid rgba(255,255,255,0.06);padding-top:var(--space-lg);margin-top:var(--space-sm);text-align:center}
.footer-copyright{color:var(--color-muted-text);font-size:13px}

@media(max-width:768px){
  .site-footer__inner{grid-template-columns:1fr;gap:var(--space-lg)}
  .site-footer__brand{grid-column:1/2;text-align:center}
  .site-footer__links{grid-column:1/2;justify-self:center;text-align:center}
  .footer-links{justify-content:center}
  .site-footer__contact{grid-column:1/2;grid-template-columns:1fr;text-align:center}
  .footer-contact__item{padding-left:0;padding-top:4px}
  .footer-contact__item::before{display:none}
  .site-footer__contact{text-align:center}
  .site-footer__bottom{grid-column:1/2}
}

@media(max-width:480px){
  .site-footer{padding:var(--space-lg) 0 var(--space-md)}
  .site-footer__logo{font-size:20px}
  .footer-links__item{font-size:13px}
}

.btn{display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-size:16px;padding:12px 28px;border-radius:var(--radius-sm);transition:all var(--transition-fast);text-transform:uppercase;letter-spacing:1px;position:relative;overflow:hidden}
.btn--primary{background:var(--color-primary-red);color:#fff}
.btn--primary:hover{background:#cc0010;transform:translateY(-1px);box-shadow:0 4px 20px rgba(230,0,18,0.4)}
.btn--primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(230,0,18,0.3)}
.btn--gold{background:var(--color-secondary-gold);color:var(--color-primary-black)}
.btn--gold:hover{background:#e6c200;transform:translateY(-1px);box-shadow:0 4px 20px rgba(255,215,0,0.3)}
.btn--gold:active{transform:translateY(0)}

.glass-panel{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:var(--space-lg)}
.section{padding:var(--space-2xl) 0}
@media(max-width:768px){.section{padding:var(--space-xl) 0}}

.data-label{font-family:var(--font-accent);font-size:12px;color:var(--color-muted-text);text-transform:uppercase;letter-spacing:1px}
.data-value{font-family:var(--font-heading);font-size:36px;color:var(--color-secondary-gold);line-height:1.2}
.data-value--red{color:var(--color-primary-red)}
.data-value--blue{color:var(--color-accent-blue)}

.progress-indicator{position:fixed;top:0;left:0;width:0%;height:3px;background:linear-gradient(90deg,var(--color-primary-red),var(--color-secondary-gold),var(--color-accent-blue));z-index:var(--z-progress);transition:width 100ms linear;pointer-events:none}

.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;border-radius:50%;background:var(--color-primary-red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;z-index:var(--z-backtop);opacity:0;visibility:hidden;transform:translateY(20px);transition:opacity var(--transition-base),visibility var(--transition-base),transform var(--transition-base),background var(--transition-fast);box-shadow:0 4px 16px rgba(230,0,18,0.3)}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:#cc0010;transform:translateY(-3px);box-shadow:0 6px 24px rgba(230,0,18,0.5)}
.back-to-top::after{content:'↑';font-weight:700;line-height:1}
@media(max-width:480px){.back-to-top{bottom:16px;right:16px;width:40px;height:40px;font-size:18px}}

[data-reveal]{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
[data-reveal].revealed{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none;transition:none}}

h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--color-light-text);line-height:1.1;letter-spacing:-0.5px}
h1{font-size:64px}@media(max-width:768px){h1{font-size:40px}}@media(max-width:480px){h1{font-size:32px}}
h2{font-size:48px}@media(max-width:768px){h2{font-size:32px}}@media(max-width:480px){h2{font-size:26px}}
h3{font-size:36px}@media(max-width:768px){h3{font-size:26px}}@media(max-width:480px){h3{font-size:22px}}
h4{font-size:28px}@media(max-width:768px){h4{font-size:22px}}@media(max-width:480px){h4{font-size:18px}}

p{margin-bottom:1em;color:var(--color-light-text)}
.text-muted{color:var(--color-muted-text)}
.text-gold{color:var(--color-secondary-gold)}
.text-red{color:var(--color-primary-red)}
.text-blue{color:var(--color-accent-blue)}
.text-center{text-align:center}

::selection{background:var(--color-primary-red);color:#fff}
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--color-primary-black)}
::-webkit-scrollbar-thumb{background:var(--color-medium-surface);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--color-primary-red)}